Method of iodine extraction from confined groundwater
FIELD: oil and gas industry.
SUBSTANCE: invention can be used in gas and oil production industry for associated crude iodine production from iodine-lean confined groundwater. The method is implemented by a sequence of electrochemical iodide ion oxidation, molecular iodine sorption on carbon, electrochemical reduction of iodine to iodides, and desorption. All stages are performed in the same chemical reactor represented by a sorption column. Activated carbon with minimum iodine adsorption capacity of 1,000 mg/g is used as a sorbent. Graphite electrode at the column bottom is used as an anode, copper cathode in the form of plate at the column top is used as cathode. After the carbon is saturated with iodine, electrode polarity is reversed to desorb iodine from carbon in the form of iodide ions. Confined groundwater, including one with low iodine content, is used as iodine source.
EFFECT: enhanced iodine production efficiency.
2 cl, 1 dwg, 1 tbl, 1 ex
The invention relates to methods for the recovery of iodine from underground pressure water and can be used in gas and oil industry for product extraction of the iodine-sugar.
The known method of electrolytic separation of iodine and absorb it with charcoal (ed. St. USSR №40333, CL. 12i, 714, 1934. A. P. Szmuk), according to which the electrolysis occurs by anodic oxidation of iodide ions and simultaneous sorption of iodine at the anode of active carbon.
The disadvantage of this method is that the iodine from the allocated coal chemical reducing agents that make the coal unsuitable for further use, and, in addition, spent chemicals.
Closest to the invention is a method the reverse of iodine excretion with coal (ed. St. USSR №43879, CL. l2i, 714, 1935. E. N. Vinogradova). According to this method, the desorption of iodine from the charcoal is in the form of iodide ions by electrochemical recovery due to the change of polycesta during electrolysis from positive to negative.
The disadvantages of this method are the use as a sorbent of fine-grained charcoal with low adsorption capacity (80 mg/g) and iron cathode, the electrolysis in saline water forms flakes of iron hydroxide, impeding the flow of the process.
The problem to be solved by the claimed technical solution�tion, excluding the cost of chemical reagents in the process of electrochemical and sorption of iodine, the reduction of environmental load on the environment.
In the implementation of the technical solution the problem is solved at the expense of achieving a technical result, which consists in increasing the efficiency of extraction of iodine, including from low concentration of iodine-containing underground water pressure (from 10 mg/l).
Said technical result is achieved in that in the method of extracting iodine from underground artesian waters, which includes stages of the electrochemical oxidation of iodide-ions, sorption of molecular iodine on carbon, electrochemical reduction of iodine to iodide and desorption, the feature is that as a sorbent use crushed activated carbon with high strength and high adsorption capacity and a copper cathode, wherein all of the specified step is carried out in a single chemical reactor. In addition, you can use as a sorbent of coal of causor-221 with adsorption capacity for iodine 1000 mg/g, and as a raw material source the extraction of low-concentrated iodine underground pressure water.
Method involves electrochemical oxidation of iodide-ions without the use of oxidizing agents. All of the following extraction stage yo�a is carried out in a single chemical reactor which is used as the sorption column (see Fig. 1).
The essence of the invention consists in the following. During iodine by electrolysis at a constant voltage (1-2. 5 V) ground water (2) from a pressure tank (1) through the lower hole flows into the adsorption column (3), filled with intense crushed coal with high strength and high adsorption capacity (at least 1000 mg/d) (6), for example the brand of causor-221 (TU 2162-210-05795731-2006) with adsorption capacity for iodine 1000 mg/g. Column acts as a flow-through electrolytic cell. In the lower part of the column is graphite electrode (4), which together with densely sprinkled and pressed from above by a plastic grille (7) coal form one large active anode. The anode and cathode through a rectifier (8) is fed a constant current with a voltage of 1.5 V and a current of 0.2 A. the purpose of preventing precipitation of iron hydroxide and piling them intergranular space of the coal in the upper part of the column is iron instead of copper cathode in the form of a plate (5). In the anode space there is a simultaneous acidification of the solution to pH 2.4 to 2.7 and the oxidation of iodine in solution with subsequent sorption on charcoal to achieve the oxidation-reduction potential (ORP), is $ 550-590 MB. Because in this range the ORP value of the solution is full of villages�active oxidation of iodine, as bromine and chlorine under these conditions are not oxidized. After saturation of the charcoal iodine changes the polarity of the electrodes to ensure that the iodine is recovered and prodesarrollo with coal the same solution.
Diagram of the iodine-containing electrolysis of aqueous solutions with graphite anode is presented below:
From the diagram it is evident that evolved at the anode the hydrogen ions are the cause of increasing the acidity of the solution, which is a favorable condition for the electrochemical oxidation of iodine. Further, due to the interaction of hydrogen ions and hydroxyl groups at the outlet of the column the solution is neutral with a pH between 6.8 - 7.5.
The present invention avoids the cost of reagents to extract iodine from water with low content and to reduce the environmental load on the environment.
Example. Natural underground water, having the composition, g/l: sodium chloride -13,4; iodide ion is 0.01; the bromide-ion - 0.05; calcium - 0,5; magnesium - 0,13; iron. - 0,002; pH to 7.3, M (mineralization) is 14.7 served in the column flow-through cell for oxidation, sorption and desorption of iodine. Download columns charcoal - 1, Was omitted 60 l of a solution at a voltage of 1.5 V and a current of 0.2 A. On 1 g of charcoal adsorbed 600 mg of iodine. After the coal has been satiated, change polarity, with the result that the anode becomes the cathode, and the cathode - anode and iodine is desorbed from coal in the form �did ions. The recovery rate of 97%. The total power consumption of 5.7 kWh per 1 kg of iodine (considering the energy consumption for the oxidation and recovery).
The table shows the results of iodine on the proposed and known ion exchange method with the use of coal CR (Canseco V. I., Stenevik D. S. Chemistry and technology of bromine, iodine and their compounds, Moscow, Publishing house "Chemistry", 1979, p. 232).
1. Method of extracting iodine from underground pressure water, comprising the sequential steps of electrochemical oxidation of iodide-ions, sorption of molecular iodine on carbon, electrochemical reduction of iodine to iodide and desorption, characterized in that all stages is carried out in a single within the chemical reactor, which is used as the sorption column, as a sorbent use activated carbon with adsorption capacity for iodine is not less than 1000 mg/g, the anode used graphite electrode, located in the lower part of the column, as the cathode - copper cathode in the form of a plate located in the upper part of the column, and after saturation of the charcoal iodine change the polarity of the electrodes for the desorption of iodine from coal in the form of iodide ions.
2. The method for recovering iodine according to claim 1, characterized in that as a raw material source the extraction of iodine use underground mineralized head�s water including its low content.
SUBSTANCE: invention relates to an electrochemical method of obtaining cyclohexanethiol in organic solvents. The method includes the interaction of cyclohexane with hydrogen sulphide under atmospheric pressure, with carrying out a one-stage reaction of cyclohexane with hydrogen sulphide under electrolysis conditions with the potential of hydrogen sulphide oxidation in an organic solvent, in which supporting electrolyte is placed, without the application of a catalyst or a specific reagent at a temperature of the process of 20-25°C.
EFFECT: application of the claimed method makes it possible to obtain the target product with high selectivity and relatively large output under atmospheric pressure without the application of the specific catalyst.
SUBSTANCE: method comprises production of the nickel oxide powder from metal nickel electrodes by electrolysis in basic solution of sodium hydroxide. Process is executed at temperature 20-30°C upon simultaneous action on the electrodes of current with frequency 20 Hz. At that electrolysis is performed at asymmetrical alternating current with current density of anode and cathode half cycle 2.5 A/cm2 and 1 A/cm2, respectively, and at action on the electrodes of the ultrasound radiation with frequency from 150 to 300 kHz.
EFFECT: production of ultra-micro-dispersed powder of nickel oxide suitable for use during catalitic production of nano-carbon materials with maximum production of the target product, decreasing of power consumption.
FIELD: power industry.
SUBSTANCE: invention relates to the field of power engineering and can be used for partial or full replacement of hydrocarbon fuel in various modes of transport, in heating systems of residential and industrial premises, in steam generators and for separate generation of pure oxygen and hydrogen for industrial, medical and other applications. The method of generation of hydrogen and oxygen from water vapour includes passing of superheated steam with the temperature 500-550°C through high voltage DC electric field, meanwhile the superheated steam is passed simultaneously through the gravitational (inertial) field created by steam itself during its movement in electric gravitational hydrogen cell, and separation of hydrogen and oxygen mix. For generation of gravitational (inertial) field the electric gravitational hydrogen cell is designed as a set of the disk plates with the central hole which are used as electrodes and guides for movement of water steam along screw trajectory, and collected in such a manner that disk plates form the double screw, and homonymous ones - even, odd disk plates are connected among themselves and electrically insulated from the heteronymic ones.
EFFECT: invention allows to reduce considerably dimensions and to increase productivity of units.
2 cl, 3 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, and can be used to prepare oil gas for use. Hydrogen sulphide contained in the oil gas is removed using three mass-transfer columns, operating under principle of counter-flow circulation. The oil gas is supplied to bottom part of the first mass-transfer column, and pre-cooled water is supplied by counter flow to it top part, at that from top part of this mass-transfer column the cleaned oil gas is removed. Pre-heated and saturate with hydrogen sulphide water is supplied to top part of the second mass-transfer column, to its bottom the air is injected by counter flow, and during mass transfer the hydrogen sulphide is washed out it, at that the cleaned water from bottoms of the second mass-transfer column is cooled and supplied to top part of the first mass-transfer column with creation of the closed circulation loop. Hydrogen sulphide saturated air mixture is injected to bottoms of the third mass-transfer column, to its top part the electrolyte is supplied, is dissolves hydrogen sulphide contained in the air mixture, then hydrogen sulphide saturated electrolyte from bottoms of the third mass-transfer column is subjected to the electrolysis with decompounding of the electrolyte dissolved hydrogen sulphide to sulphur and hydrogen, then hydrogen together with residual gases is returned to the process, and cleaned of the hydrogen sulphide electrolyte is supplied to top part of the third mass-transfer column creating the closed loop of the electrolyte circulation.
EFFECT: invention ensures high effective oil gas cleaning of hydrogen sulphide, with cleaning degree up to 99,99%.
SUBSTANCE: invention relates to an improved method of obtaining fluorinated carboxylic acids and their salts, consisting of the reaction of fluorine-containing alcohols with the general formula (A):A-CH2-OH, with as minimum one first and as minimum one second oxidiser in order to obtain fluorinated carboxylic acid or its salts with the general formula (B): A-COO-M+, where M+ represents a cation and where "A" in formulas (A) and (B) represents a similar fragment, representing a residue: Rf-p-CX"Y"-m-CX'Y'-n-CXY-, where Rf is a fluorinated alkyl residue, which might contain, and might not contain one or several catenary atoms of oxygen, p, m and n are independent on each other or 1, or 0; X, X', X", Y, Y' and Y" are independent on each other H, F, CF3, or C2F5, on condition that at least one of the values X and Y represents F, CF3, or C2F5; or A represents a residue: R-CFX-, where X and R are independently selected from hydrogen, halogen or alkyl, alkenyl, cycloalkyl or aryl residues, which might contain, and might not contain one or several fluorine atoms, which might have and might not have one or several catenary atoms of oxygen, where the first oxidiser represents a compound, which has groups, selected from N-oxyls, P-oxyls-, alpha-halocarbonyls, ketones, imines, iminium salts and their combinations; and the second oxidiser is selected from electric current of a galvanic element, peroxide, oxides of halogens, chlorine, oxygen, ozone, salts of nitrous acid or their combinations.
EFFECT: effective method makes it possible to use an easily available raw material.
14 cl, 22 ex
SUBSTANCE: invention relates to the field of separation of particles of the predetermined dispersion from the suspension, and can be used in the industry for obtaining nanodisperse powders for manufacturing high-strength articles with improved properties. The device for separation of nanodisperse powders of metal oxides from the suspension comprises a housing made in the form of two intercommunicating vessels of a dielectric material, filled with a suspension comprising distilled water and particles of metal oxides, and interconnected by pipeline with the ability of separation, at that one of the vessels is with the ability to connect to it of the positive potential and the other - negative potential and with the ability to move to it under the influence of the electric field of particles of larger size from the vessel with the positive potential.
EFFECT: increased productivity due to reduction of the time of separation of particles and increase of service life.
7 cl, 1 dwg
SUBSTANCE: invention refers to a ventilation method of an electrolysis unit for aluminium manufacture. The method involves the following: disposal of gases from an inner space of a cover of an electrolysis unit; cooling of at least some part of the above gases with formation of cold gases; and circulation of at least some part of the above cold gases to the inner space through one or more distributing devices.
EFFECT: use of this invention allows increasing efficiency with regard to necessary capital investments and current production costs owing to using heat of recirculated gases Besides, the invention relates to an electrolysis unit.
16 cl, 4 dwg
SUBSTANCE: invention relates to electrolysis installation for space purposes, including electrolysis module with output pneumatic mains of oxygen and hydrogen, provided with vapour condensers, made of porous hydrophilic material and having water discharge into the environment, reservoir with water, provided with temperature sensor and hydraulically connected with electrolysis module and working under excess pressure, gas balloon system of oxygen and hydrogen storage with pneumatic mains of said gases output with lock elements, which has, at least two successively balloons for each of gases connected to each other via pneumatic mains, with pressure sensors, installed on balloons; as well as system for control of parameters, connected to said sensors, sensor of external pressure and temperature sensor. Vapour condensers are connected with reservoir with water via hydromains with lock elements, and inserts of porous hydrophilic material for accumulation of condensate, are placed inside balloons, with balloons themselves being provided with hydromains to control accumulated in inserts condensate, and said hydromains are provided with lock elements and are connected with respective vapour condensers. Invention also relates to method.
EFFECT: application of claimed invention makes it possible to reduce water-content of produced gases, increase energy efficiency and reliability of device operation.
4 cl, 1 dwg
SUBSTANCE: invention is related to water electrolytic unit containing an electrolytic cell, a power supply unit, gas mixture treatment units and a burner of injection or equal pressure, which is operated at the mixture of hydrogen and oxygen. At that the received hydrogen and oxygen mixture is cooled in the air-blown spiral heat exchanger and the burner nozzle between nozzle and a gas-restricting element there is a drier of the gas mixture. In its turn the drier includes a centrifugal coiled droplet separator and cavity filled with granules or chips of aluminium or aluminium alloy.
EFFECT: perfection of the unit.
2 cl, 2 dwg
SUBSTANCE: invention relates to a method of preparing carbon-containing indicator electrodes modified with nanoparticles of Au, Pt, Pd, Ni, Cu. Modification is carried out by depositing metal nanoparticles obtained by laser ablation of metal targets in clean solvents in the absence of stabilisers onto the working surface of the indicator electrode and holding (for not less than 5 minutes) the working surface in a respective dispersion (with concentration of not less than 0.05 g/l), followed by drying on air at room temperature.
EFFECT: method is simple, reactant-clean, and is not complicated by the need to use high temperatures and toxic organic substances.
6 ex, 10 dwg
SUBSTANCE: basic operations of the method are adding a coagulant to the starting water to be purified, floatation, forming a water-gas mixture, treating with high-voltage pulsed discharges, full oxidation of phenols and oil products. The last operation is final purification on sand-carbon filters. The water is treated using quasi-volume discharges with frequency of 400-1000 pulses per second, carried out periodically in bursts with the ratio of the duration of the pulse burst to the repetition period of the bursts of 0.1-0.5.
EFFECT: high efficiency of the method and low power consumption.
3 dwg, 2 tbl, 1 ex
SUBSTANCE: invention relates to versions of a method of breaking down a colloidal system by electrochemical decomposition of emulsions and to apparatus for carrying out said method. One version of the method includes: separating solid contaminants from the emulsion; preheating the emulsion in a heat regenerator; achieving minimum emulsion stability by regulating pH; decomposing the emulsion in an electrochemical decomposition reactor by passing the emulsion between an anode made of electrochemically active material and a cathode made of electrochemically inactive material, as a result which colloidal particles of the emulsion are attached to flakes which form foam, when using as the flocculant a compound obtained in situ from the material of the electrochemically active anode; discharging the foam obtained from the step described above and discharging the purified water through a filter for final purification and/or into a reservoir for final settling and into a heat regenerator.
EFFECT: use of the present invention reduces power consumption when purifying water.
21 cl, 2 ex, 2 dwg
SUBSTANCE: invention relates to field of still waste liquid recycling, which is formed in production of coda ash by ammonia method. Still waste liquid is processed with sodium hydroxide with mole ratio CaCl2:NaOH, equal 1:2÷2,25 (mainly 1:2), calcium hydroxide precipitation, which is obtained in the process, is filtered, filtrate, consisting of sodium chloride, is subjected to electrochemical processing in two-chamber electrolyser with cathion-exchanging membrane at current density 350÷1400 A/m2 with obtaining hydroxide of sodium and chlorine.
EFFECT: invention makes it possible to simplify method of still waste liquid recycling, reduce energy consumption on recycling and obtaining calcium hydroxide, hydroxide of sodium and chlorine as marketable products.
1 dwg, 2 tbl, 2 ex
FIELD: process engineering.
SUBSTANCE: invention relates to treatment of industrial effluents. Oil products are separated in separators 3, 4 and afterpurified in ultra filtration unit 10. Clarified alkaline effluents are directed into electrolytic cells 13. alkali is concentrated in electrolytic cell cathode chamber 14 while sulphides are reduced to elementary sulfur in anode chamber 15. Concentrated alkali and sulfur are discharged into service bins 17, 20, respectively. Downstream of electrolytic cells 13, effluents are treated in reverse-osmosis unit 22. Purified water is collected in tanks 23. Concentrate is fed back into tank 21 for clarification.
EFFECT: alkali recover, water purification and elementary sulfur without use of extra reagents.
2 cl, 1 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to environmental protection and may be used for treatment of effluents and wastes. Proposed device comprises dehydration scraper conveyor, crosswise partitions, process water cleaning devices of two types, water electrical cleaning devices and device to adjust water bleed and discharge depth. Water cleaning devices are arranged in inclined trench that water flow at 0.35±0.10 m/s-rate. Said scraper conveyor is arranged at trench bottom to discharge dewatered slurry into filtration hopper. Water cleaning device are arranged in pairs, that is, louvers-type cleaner - electrical cleaner, and lengthwise finely-dispersed precipitation module - water electrical treatment module, total number of pairs making 6-12. Note here that electrical treatment modules voltage between electrodes varies with distance there between to make 2.5±0.5 V/cm and adjacent pair electrodes polarity being opposite. Positive potential of 10-12 V is fed to crosswise electrically conducting filter while negative potential is fed to scraper conveyor casing.
EFFECT: reduced costs and higher reliability.
SUBSTANCE: method involves steps for homogenising the filtrate, alkaline treatment of the filtrate with lime with subsequent reagent normalisation of pH of the filtrate using aqueous spent etching solutions from metal-processing factories which contain FeCl2 or FeSO4 with concentration of 17-25 wt %, with specific consumption of 1.0-5.0 mg/l of filtrate, bubbling the filtrate, blowing ammonia and biogenous compounds and electroflotocoagulation of the filtrate, after which the cleaned filtrate is taken to an evaporation pond.
EFFECT: higher environmental safety with high degree of purification of complex multi-component effluents, reduced treatment costs.
3 tbl, 2 ex
FIELD: treatment facilities.
SUBSTANCE: invention relates to water treatment and decontamination. The water treatment plant provides for affecting treated water volume by electric field. The plant consists of a reactor, three ejector pumps, stirrer and additional tank. There is a group of top electrodes and limiting screen installed inside reactor. The first ejector pump is connected to the reactor and provided with an outlet nozzle and two inlet nozzles. One of the inlet nozzles acts as an outlet nozzle of reactor, while the second one is intended for treated liquid supply. The second ejector pump is placed between the first ejector pump and stirrer and provided with an outlet nozzle acting as an inlet nozzle of the stirrer, and two inlet nozzles. One of said inlet nozzles is an outlet nozzle of the first ejector pump, while the other one is designed to supply hydrogen peroxide. The third ejector pump is placed in the additional circuit including additional tank for the treated liquid treatment and a pump to enable treated liquid circulating in the additional circuit. The third ejector pump is provided with an outlet nozzle to supply air into additional tank, and two inlet nozzles. One of said inlet nozzles is an outlet nozzle of the treated liquid circulation pump, while the other one is designed to supply air hydrogen peroxide.
EFFECT: invention allows for increasing water cleaning effectiveness and plant output.
FIELD: chemistry, water purification.
SUBSTANCE: invention refers to water treatment and can be used for tap water purification and activation in food industry, medicine, for sea water conversion, etc. Water treatment method is implemented in closed operating capacity and includes heat rejection enabling water local bulk crystallisation by ice crystals silvering in amount 50÷70 % of initial water weight surrounding heat exchanger, contaminated water drain through the port in capacity bottom and through the channel 0.5÷2 cm above capacity bottom, and removal of frost accumulation. Level of operating capacity filling with initial water is determined by height of channel port draining surplus initial water resulted from operating capacity filling and during initial water crystallisation due to its volume increase to additional capacity. Frost accumulation is removed by heating the ten shaped by multistage coil pipe and mounted in working capacity to surround heat exchanger directly in ice zone. During removal of frost accumulation, melt water is exposed to electrochemical activation carried out in special electrochemical activation tank separated with diaphragm to anode and cathode chambers. Herewith cathode chamber is pipeline connected to working capacity.
EFFECT: water purification from dissolved cancerogens, mutagens and gases, heavy hydrogen isotope, deuterium and tritium.
2 cl, 1 dwg, 1 ex
SUBSTANCE: proposed method of purifying oily water effluents involves treatment of water in convection streams, formed by hydrogen bubbles, the number of which is equal to the number of cathode elements, subsequent mixing of the treated effluent water with a stream of clean water, saturated with oxygen bubbles, and filtration of the obtained mixture in a granular bed with catalytic properties. Part of the purified water is returned by recirculation for saturation with oxygen bubbles, and gaseous hydrogen and oxygen are taken out separately. The device for electrochemical purification of oily effluents comprises a case with vertical partition walls and connection pipes for inlet of the water to be purified and outlet of purified water, a receiving chamber, floatation chamber with horizontal electrodes, a chamber for collecting pure water, chamber for collecting sludge and a foam-collecting device in form of a series of truncated pyramids. The device also has a catalytic chamber filled with catalyst, connection pipes for letting purified water into the anode chamber, as well as connection pipes for outlet of gaseous hydrogen and oxygen. The floatation chamber is divided by a horizontal membrane into a cathode and anode chamber. The anode is a solid plate and lies at the bottom of the anode chamber. The gauze cathode is made from separate elements which are parallel to the anode.
EFFECT: increased efficiency and safer water purification process.
8 cl, 1 dwg, 1 tbl
FIELD: chemistry, process procedures.
SUBSTANCE: apparatus for producing purified water and water for injection comprises sterilizer, ion-exchange filter, tank for purified water and tank for water for injection. In addition, the device comprises feed water supply valve, connected to holding tank rapid filling valve, which interacts with a float-type gate valve and is connected to feed water holding tank, which is connected to the valve for supplying feed water from the holding tank to the pump line, and to the valve for discharging feed water from the holding tank. Feed water supply valve is connected to feed water pump, discharge of which is connected to the bypass valve inlet. Pressure indicator, which indicates current bypass control pressure, is connected to bypass valve inlet, to feed water pump discharge and to water flow meter, which is used to monitor the ion-exchange filter service life, while the flow meter is connected to multiway valve, which interconnects the ion-exchange column, a salt-dissolving apparatus, supply and discharge lines. The said multiway valve is connected to the supply rate control valve for the salt solution used for ion-exchange filter regeneration. The valve is connected to the salt solution flow rate indicator, which is connected to the salt dissolving apparatus. Outlet of the salt-dissolving apparatus, via the second outlet of the multiway valve, is connected to the inlet of the ion-exchange filter, the outlet of which is connected to the second inlet of the multiway valve via electric oxidizer. The third outlet of the multiway valve is connected to the valve, which controls operating capacity of the first and second electrodialyzers, and the said valve is connected to an electric-contact pressure gauge and to a continuous electric heater. The electric heater outlet is connected to the first electrodialyzer, outlet thereof is connected to the second electrodialyzer, the first outlet of which is connected to the second inlet of the first electrodialyzer, while the second outlet of the second electrodialyzer is connected to conductivity sensor. Outlet of the latter is connected to the second inlet of the second electrodialyzer via water flow rate meter, which measures water used for washing concentration cells of electrodialyzers. Outlet of the conductivity meter, via the valve which controls water supply to concentration cells of electrodialyzers, is connected to the resulting purified water flow meter. Outlet of the latter is connected to solenoid valve, which controls purified water supply to the purified water holding tank, which comprises sterilising lamp, and to the purified water return solenoid valve. The first outlet of purified water holding tank, via purified water take-off valve, is connected to portable tank for purified water take-off and transportation to area of consumption. The second outlet of purified water holding tank, via aseptic purified water supply valve and economizer, which is a shutoff-float level control device, is connected to an electric evaporative distilling apparatus. The latter is connected to a gas-liquid heat exchanger for water for injection production. Outlet of evaporative distilling apparatus, via gas-liquid heat exchanger, is connected to portable tank for water for injection takeoff and transportation to area of consumption. Outlet of coolant reservoir, via coolant pump connected to the distilling apparatus heat exchanger, is connected to the first inlet of liquid cooling liquid-air radiator, to the second inlet of which cooling air is supplied, while the radiator outlet is connected to the coolant reservoir inlet.
EFFECT: improved compactness and reliability of the apparatus; less energy consumption.
FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to means for protection against contaminants introduced by gravity draining at steam pumping and/or those peculiar thereto. This system is used at the plant based on gravity draining at steam pumping for production of heavy oil. This control system allows the simultaneous control over silicon dioxide, hardness and oil contamination existing in evaporator feed water.
EFFECT: ruled out heat exchange surface fouling, higher reliability.
9 cl, 16 dwg