The flare for combustion of waste gases
The invention relates to the oil industry and can be used for burning waste gas in the oil fields and refineries. The objective of the invention is to reduce emissions of pollutants into the atmosphere. The flare for combustion of waste gases includes a separator, the gas waste gas flare pipe. It is further provided with an ejector mounted on the outlet of the nozzle flare pipe coaxially relative to the nozzle connected to the fan pumping air through a duct with an adjustable valve. The adsorption unit cleaning gas is connected by a pipeline with an adjustable gas valve and pressure sensor output separator for the separation of gas and gas pipeline and riser flare with its nozzle. The pressure sensor is electrically connected to the input of the comparison element, a second input connected to the reference pressure, and the output - variable valve duct. Block adsorption purification is made in the form of package cholesterolic tubes placed parallel to the longitudinal axis of the adsorption unit. 2 C.p. f-crystals, 1 Il.
The invention relates to oil Promyshlennaya.
The combustion of waste gases in flares can prevent the pollution of toxic and flammable substances, to reduce the number of accidents and to create security, because through the open end of the flare can get into the air, which will lead to the formation of an explosive mixture in the flare system.
The well-known scheme flare system for burning waste gases, including flare tube burners and nozzles for the steam silly, K. Environmentally friendly flare tip// Oil, gas and petrochemicals. - 1990, No. 1 - C. 112-114/.
The drawback of the scheme is that in terms of the oilfields there are difficulties with obtaining a pair, because there is no source of clean fresh water. This significantly limits the scope of such flare systems.
The closest you install the same destination to the claimed invention on the totality of symptoms is the technological scheme flares for gases with a selection of flare gases for recycling or for combustion in boilers, comprising a separator in which the gas is released from the condensate, the condensate discharge gas flare pipe, the supply line to the consumer, a control valve for the machine is 9, - S. 24-25/.
Disadvantages installation are low completeness of combustion gas and a large amount of harmful emissions into the atmosphere.
The present invention is the reduction of emissions polluting the atmosphere.
This object is achieved in that known to the flare for combustion of waste gases, comprising a separator, gas waste gas flare pipe is further provided with an ejector mounted on the outlet of the nozzle flare pipe coaxially relative to the nozzle connected to the fan pumping air through the air duct with adjustable latch, block adsorption of gas purification, United gas pipeline with adjustable gas valve and pressure sensor output separator for the separation of gas and gas pipeline and riser flare with its nozzle, the pressure sensor is electrically connected to the input of the comparison element, a second input connected to the reference pressure, and the output - variable valve duct and block the adsorption purification is made in the form of package cholesterolic tubes placed parallel to the longitudinal axis of the adsorption unit.
Cholesteremia pipes made of polyethylene or fiberglass. Selected materials hardbottle to use with a large paraffin content in oil this reduces the deposition of wax on the inner surface cholesterolic pipes.
The adsorption unit is preferably mounted at an angle of 45-60°. The nozzle is made of heat-resistant steel. Installation of the ejector and providing a regulated supply of air at the exit of the nozzle, and push the mixture (mixing) of waste gas which has passed the adsorptive purification, with air in the ratio of 1:10 provides complete smokeless combustion of gas and significantly reduces emissions of soot and oxides in the atmosphere.
The drawing shows a diagram of flares for the combustion of waste gases.
The apparatus comprises a riser with 1 nozzle 2 and the ejector 3, mounted coaxially relative to the nozzle 2. The ejector 3 is connected to the fan 4 through the duct 5 and the adjustable valve 6. The installation also includes a separator 7 for the evolution of a gas, the output of which through the pipeline 8, block adsorption purification of gas 9 and the pipeline 10 is connected to the riser 1. At the output of the separator 7 has a pressure sensor 11, which is electrically connected to the input of the comparison element 12, the second input of the comparison element 12 is connected with the reference pressure 13, and the output of the comparison element 12 is controlled by valve 6. The adsorption unit cleaning ha the CSOs inclined, and is connected with a storage capacity of 15. The block 9 is also equipped with a by-pass line 16 with valve 17 and valve 18.
The device operates as follows. Discharge gas from the separator 7 is fed through the pipeline 8 through the valve 18 in the block adsorption purification 9, through the pipeline 10, the riser 1 in the nozzle 2. At the same time in the ejector 3 fan 4 through the duct 5 and the adjustable valve 6 pump the air. Gas-air mixture remotely lit /not shown/. Air supply depends on the amount of supplied gas or gas pressure at the outlet of the separator 7. To ensure complete combustion of waste gas, you need to meet the conditions of the ratio of gas:air as 1:10. To do this, change the position of the valve 6 and to control the completeness of the combustion gas /for example, visually - no soot indicates the completeness of combustion/. The final gas to air ratio depends on the content of residual oil in the gas and determine empirically. With increasing gas pressure, the gas flow also increases and the signal from the pressure sensor 11 is fed to comparing element 12, which issues a control signal to the controllable valve 6 to increase the air supply to the ejector 3. As a result, the ratio popasnoy mixture, as the ratio of gas:air >3/2.
With the passage of gas through the adsorption unit cleaning 9 drops of oil in the gas coalescers on the inner surface of the pipe 14, and then they drain the holding tank 15.
During the repair unit 9 discharge gas to the riser 1 is supplied through the bypass line 16.
Thus, the advantage of the inventive installation is that the forced mixing of gas with air at a ratio of 1:10, and its combustion in the presence of the ejector duct, an adjustable valve, and remove from the gas drip oil using adsorption treatment unit leads to the reduction of emissions of harmful substances into the environment.
1. The flare for combustion of waste gases, comprising a separator, gas waste gas flare pipe, characterized in that it is further provided with an ejector mounted on the outlet of the nozzle flare pipe coaxially relative to the nozzle connected to the fan pumping air through the air duct with adjustable latch, block adsorption of gas purification, United gas pipeline with adjustable gas valve and pressure sensor output separator for the separation of gas and the enta comparison, a second input connected to the reference pressure, and the output - variable valve duct and block the adsorption purification is made in the form of package cholesterolic tubes placed parallel to the longitudinal axis of the adsorption unit.
2. The flare for combustion of waste gases under item 1, characterized in that the heat of adsorption purification is installed obliquely.
3. The flare for combustion of waste gases under item 1, characterized in that cholesteremia pipes made of polyethylene or fiberglass.
FIELD: burning waste gases of pyrolysis furnaces in reworking solid domestic wastes.
SUBSTANCE: proposed combustion chamber includes mixing chamber with active and passive nozzles mounted at its inlet; active and passive nozzles are connected respectively to compressed air source and to waste gas source; mixing chamber is made in form of diffuser at aperture angle of 10-18 deg; ratio of diameters of active and passive nozzles is equal to: Dact:Dpas=0.35-0.4.
EFFECT: enhanced economical efficiency of use of vapor-and-gas cycle.
2 cl, 1 dwg
FIELD: the invention refers to apparatus of regenerative thermal oxidation with multi pass valves.
SUBSTANCE: the apparatus for regenerative thermal oxidation for gas processing has a combustion zone, the first heat exchanging layer keeping heat exchanging surroundings and connecting with the combustion zone; the second heat exchanging layer keeping heat exchanging surroundings and connecting with the combustion zone; a valve for alternate direction of the gas flow between the first and the second heat exchanging layers. At that the valve has the first valve passage and the second valve passage separated from the first valve passage; a flow distributor having an admission passage communicates with the help of fluid medium with the admission opening of the surroundings and an exhaust passage communicates with the help of fluid medium with exhaust opening of fluid surroundings. At that the distributor is fulfilled with possibilities of its the first and the second valve passages between the first position in which the first valve passage communicates with the help of liquid with the admission passage and the second valve passage communicates with the help of liquid surroundings with exhaust passage and the second position in which the indicated the first valve passage communicates with the help of the fluid surrounding with exhaust passage and the second passage of the entry of the valve with the help of liquid surroundings communicates with the admission passage. At that the distributor of flow has a blocking surface which blocks the flow through the first part of the first valve passage and through the second part of the second valve passage when the distributor of the flow is between the first and the second positions and is fulfilled with possibility of its turning to 180o between the first and thesecond positions. At that valve passage is divided as the first so is the second at least into two chambers and the first and the second parts of the valve passages are congruous.
EFFECT: simplifies the construction, provides comfort of controlling and exploitation and deep removal of volatile organic combinations.
22 cl, 12 dwg
FIELD: technologies for combustion of flush gases, including those under high pressure, during extraction and processing of natural gas and oil.
SUBSTANCE: body of burner, mounted on gas inlet pipe, is made conical with widened portion at upper portion, in the body additionally mounted are two catalyst elements, at lower portion on inlet section first catalyst element is positioned, and above on outlet section - second catalyst element, rotary shutters are mounted on base of conical body in additional way, so that in closed position they are in contact with first catalyst element, and open position between first catalyst element and body gap is formed, also, device is additionally provided with one or more main torches, mounted in gas inlet pipeline below rotary shutters and first catalyst element. Relation of diameters of first and second catalyst elements matches relation of debits of hydrocarbon gas, fed in normal mode and during salvo exhaust. Catalyst elements are manufactured either in form of cell-like structured blocks with direction of channels in parallel to direction of feeding of flush gases, or in form of block sections with granulated catalyst, for example, Rachig rings, or in forms of block sections with active-catalyst metallic shavings, or in form of blocks with active-catalyst metallic meshes.
EFFECT: higher ecological safety and fullness of combustion of flush gases in broad flow range, simplified construction and comfort of maintenance.
6 cl, 3 dwg
FIELD: the invention refers to industrial ecology and may be used for flameless purification of ejections of industrial enterprises.
SUBSTANCE: the reactor for catalytic purification of gaseous ejections has a cylindrical body, which interior surface is covered with a catalyst with a source of infrared radiation placed in the body, a tube heat exchanger located in the lower part of the body, a turbine mixer located in the upper part of the body and additionally - a permeable cylindrical drum out of the catalyst so that the axles of the symmetry of the drum and body coincide. The drum embraces the mixer and the source of infrared radiation fulfilled in the shape of a six-ends star is installed in the middle of the body so that its flatness is perpendicular to the axle of the symmetry of the reactor. The drawing off socket is connected with the tube space of the heat exchanger, and the feeding socket is located so as to provide heating of gaseous ejections with the heat of the gases moving out of the reactor.
EFFECT: increases effectiveness of purification of gaseous flow and reduces power inputs for heating the gas flow.
FIELD: burning combustible gas at pressure above atmospheric.
SUBSTANCE: proposed plant is used for burning lean gases; it consists of unit for burning gas at pressure above atmospheric including lean gas chamber, combustion chamber, heat regeneration section and exhaust; pipe line supplying lean gas to lean gas chamber; heat removal and pressure equalizing chamber and preheated air chamber; plant is also provided with pipe line supplying the compressed surrounding air to heat removal and pressure equalizing chamber, preheated air pipe line for delivery of preheated air to preheated air chamber; provision is made for hole for delivery of lean gas from lean gas chamber to combustion chamber and hole for delivery of preheated air from preheated air chamber to combustion chamber. Heat removal and pressure equalizing chamber is made for heat exchange between lean gas chamber, preheated air chamber and combustion chamber and compressed surrounding air; lean gas and preheated air are burnt in combustion pressure at pressure above atmospheric.
EFFECT: enhanced efficiency; minimum difference in pressure between gas and air chambers.
12 cl, 12 dwg
FIELD: arrangements or devices for treating smoke or fumes.
SUBSTANCE: head comprises gas supply pipe with gas gate and protecting shield mounted outside and coaxially at the top end of the gas supply pipe. The protecting shield is composed of two baffles made of two hollow trancated cones mounted one on the other. The grater base of the top baffle faces downward, and that of the bottom baffle faces upward. The smaller base is connected with the gas supply pipe.
EFFECT: enhanced reliability and prolonged service life.
2 cl, 2 dwg
FIELD: power engineering.
SUBSTANCE: valve comprises rotatable housing provided with passage, outer unmovable ring seal of the housing, ring seal between the rotatable housing and outer unmovable ring seal of the housing that has bore made for permitting gas to flow to the passage or from the passage. The ring seal is movable with respect to the outer ring seal of the housing. The passage and the bore are made for permitting receiving the compressed gas to provide continuous sealing between the outer ring seal of the housing and ring seal when the housing rotates. The valve is additionally provided with means for permitting gas to flow through the radial passage and between the ring seal and outer unmovable ring seal of the housing and setting ring connected with the rotatable housing and locking ring that is mounted at a distance from the setting ring and connected with the rotatable housing. The ring seal is interposed between the setting ring and locking ring.
EFFECT: simplified structure and enhanced efficiency.
16 cl, 30 dwg
FIELD: toxic flue gas combustion technology for fuel-burning units.
SUBSTANCE: flue gases are neutralized in combustion chamber; total fuel flow is bifurcated; first fuel flow is mixed up with flue gases supplied to combustion chamber and second one is conveyed to combustion-chamber burners wherein it is burned in air environment and then passed to combustion chamber. Coke gas, flue gas, or blast-furnace gas, or generator gases, or mixture thereof can be used as fuel; total flowrate of flue gases (B"G) at combustion chamber outlet, total flowrate of fuel (BF) supplied to combustion chamber, flowrate of air (BA) supplied to combustion chamber, and flowrate of fuel (BF BRN) supplied to burners are found from following set of equations (1), (2), (3), (4):
, where B'G is flowrate of flue gases from combustion chamber outlet, kg/h; T'G is temperature of flue gases at combustion chamber inlet, °C; O'2 is oxygen content in flue gases at combustion chamber inlet, %; C'G is heat capacity of flue gases at combustion chamber inlet, kcal/kg; B"G is total flowrate of flue gases at combustion chamber outlet, kg/h; BF is total flowrate of fuel supplied to combustion chamber, kg/h; BF BRN is fuel flowrate to burners, kg/h; QF L is fuel low heating value as fired, kcal/kg; O2" is oxygen content in flue gases at combustion chamber outlet, %; VA O is theoretical air flowrate for burning 1 kg of fuel, kg/h; BA is air flowrate to combustion chamber, kg/h; TG" is gas temperature at combustion chamber outlet, °C; CG" is heat capacity of flue gases at combustion chamber outlet, kcal/kg; α is excess air coefficient. Temperature within combustion chamber is maintained between 850 and 1150 °C.
EFFECT: enhanced efficiency of flue gas neutralization in fuel-burning units.
1 cl, 1 dwg, 3 tbl, 1 ex
FIELD: chemical engineering.
SUBSTANCE: method comprises using gas made of a mixture of carbon dioxide and oxygen in the plasma burner. The plasma burner ionizes gas thus producing carbon monoxide and reactive oxygen that removes ash from the gas. Oxygen and vapor are sprayed and injected to chamber (3) that receives the device with plasma burner. The control system (6) is provided with feedback and controls the concentration of the production gas, nozzle, and plasma burner.
EFFECT: enhanced reliability.
29 cl, 3 dwg
FIELD: the invention is designed for ventilation and may be used at equipping industrial objects.
SUBSTANCE: the system of ventilation of an industrial object has local units of suction air with polluting substances, an airway connecting the local suction units with the suction branch pipe of a boiler's blow fan. The airway is connected through drainage with the pipeline located below it with condensed and liquid fractions of polluting substances. The pipeline is switched to the suction branch pipe of the boiler's blow fan.
EFFECT: increases reliability, economy of the ventilation system of an industrial object.
3 cl, 1 dwg