Mass exchange tower with cross current of liquid and gas (steam) phases of “peton” system

FIELD: machine building.

SUBSTANCE: invention relates to cross current packed heat-mass exchange towers, in which carried out processes of liquid-steam mixtures rectification separation, liquid-steam mixtures distillation, liquid-gas mixtures absorption separation. It can be used in oil processing, petrochemical, chemical, gas, food and other industries. Mass exchange tower with cross current of liquid and gas (steam) phases of “PETON” system includes housing, raw material supply union, distillate and residue vapors output, input of irrigation and vapors, cross current nozzle section, separated by height with horizontal support partitions, mated with liquid distributors made in form of set of steps, each of which is made of two conjugated face and drain plates, limiting cross current nozzle section, forming rectangular pocket in normal cross section. Step drain plate is equipped with perforated round holes, in each of which positive buoyancy rod is installed with possibility of free movement.

EFFECT: technical result is development of highly efficient mass exchange column, in which sharp change of liquid phase flow rates is possible, providing at that considerable expansion of device stable operation range, and possibility to use of contact devices with different number of flows in single device.

11 cl, 11 dwg

 



 

Same patents:

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to a gas scrubber. The gas scrubber contains a gas washer designed as a vertical cylinder with one or several heat exchangers which are built-in into its housing for cooling of a gas-liquid mix formed by a gas to be cleaned and flushing liquid. The heat exchangers consist of vertically located thermal sheets and have a cross section which in each case conforms to common cross section of the gas washer. The gas-liquid mix flows through gaps between thermal sheets whereas cooling liquid flows in thermal sheets. Down the flow in front of the top heat exchanger the sheets guiding a flow are mounted which are designed as rectangular plates parallel to each other and located in such a way that their lower edges pass parallel to the top edges of thermal sheets with the gap D 5 - 15 cm and the horizontal average distance (B) between the guiding sheets is equal to average distance between thermal sheets, sheets are located at an angle F to a vertical axis of the gas washer, that is less than 90°, and their depth E is 10-30 cm.

EFFECT: invention allows to improve efficiency of heat exchange.

6 cl, 3 dwg, 1 tbl

FIELD: transport, distribution.

SUBSTANCE: invention relates to distribution of fluid. Distribution tray comprises flat part to make fist side adapted for fluid intake and second side with several holes, and overflow device extending through said flat part. Note here that said first part is located on first side while second part is arranged on second side. Said second part allows fluid to flow there through. Besides, it includes insert is arranged inside overflow device to make the contraction and expansion of fluid passage channel. Note here that said insert makes the contraction whereat one or several cut-out are made. Several holes are arranged downstream of the overflow device and several holes upstream of said contraction.

EFFECT: uniform fluid flow.

14 cl, 9 dwg

FIELD: oil and gas industry.

SUBSTANCE: dispenser for nozzle irrigation in rectification and adsorption towers include the system of liquid delivery to the dispenser in the form channels with rectangular cross-section and openings in the lateral walls matched to groves shaped as triangle in standard cross-section for the purpose of liquid phase draining, in their lower part there are splitters for liquid jets as a bundle of dispersing elements matched in the lower part of the grooves with upper ends of the dispersing elements oriented downwards by the lower ends. The dispersing elements are placed at angle α in regard to each other and their length L is divided by the following formula: , where L is length of a dispersing element; a is a channel width, mm; b is a groove width, mm; N is a number of dispersing elements, pieces; α is the angle between dispersing elements, degrees.

EFFECT: invention allows increasing square area and uniformity of irrigation for the mass-exchanging nozzle.

3 cl, 5 dwg, 2 ex

FIELD: chemistry.

SUBSTANCE: method includes the introduction of drops of an absorption liquid into a gas flow, mainly, in the direction of the gas flow, capturing CO2 from the gas flow during a phase of capturing by means of the drops of the absorption liquid, with the drops of the absorption liquid being introduced into the gas flow at a high rate, sufficient for the provision of an internal circulation in a mass of a drop of the absorption liquid, and the drops of the absorption liquid being introduced into the gas flow with the Sauter mean diameter in the interval from 50 to 500 mcm. A device for capturing CO2 is described.

EFFECT: reduction of capital expenditures and energy consumption.

19 cl, 7 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to gas-fluid contact apparatus. The latter is intended for fluid spraying from top to bottom in contact column. Gas in said column displaces so that gas displacing from top and bottom gets in direct contact with fluid. Said gas-fluid contact apparatus includes the elements that follow. Wall nozzles arranged in wall surface in said contact column for fluid spraying inside contact column and fluid dispersion nozzles arranged inside said contour composed by wall nozzles in contact column for uniform fluid spray therein. Note here that fluid dispersion nozzles and wall nozzles include nozzles of two or more types to be used in compliance with gas flow rate.

EFFECT: uniform fluid dispersion in column, decreased amount of sprayed fluid.

9 cl, 1 tbl, 14 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to fluid flows separation in chemical apparatuses. Device for separation of fluid flows wherein at least one solution is diluted and/or exists as a suspension in chemical apparatus into two or more separate flows comprises at least one plate with two or several rounded holes or hole chamfered at partial flow intake side. Said holes can be shaped to slots.

EFFECT: reduced inclination to sedimentation.

6 cl, 6 dwg, 2 ex

FIELD: process engineering.

SUBSTANCE: invention relates to processing of hydrocarbon gas. Proposed method comprises removal of heavy hydrocarbons, mercaptans, hydrogen sulphide, drying for production of cleaned gas and regeneration gases, and recovery of acid gas of regeneration to obtain sulfur and off gas. Note here that hydrocarbon gas is premixed with the mix of regeneration gases and off gas and subjected to absorption cleaning by chemisorbent to obtain organic phase, water and pre-cleaned gas to be directed for further cleaning. Said chemisorbent represents a hydrocarbon solution of sulfur, organic di- and polysulphides, as well as catalytic amount of organic compound containing tertiary nitrogen atom. The latter is produced by mixing organic phase with sulfur in amount that ensures a complete oxidative conversion of mercaptans.

EFFECT: higher yield, simplified process.

1 dwg

FIELD: process engineering.

SUBSTANCE: invention can be used in oil-and-gas industry, oil processing, chemical and petrochemical industries for absorption cleaning of process gases from acid components with application of aqueous solutions of alkanolamines. Proposed device comprises separator, device to mix gas with absorbent, two-section absorber with mist extraction device, top packed mass exchange section equipped with distributing device, bottom section equipped with the set of radial-helical heat exchangers with distributing devices and coolant or heat carrier feed and discharge pipes, absorbent feed pump, device to clean circulating amine solution from decomposition products, gas feed and discharge pipes and process pipelines. Note here that absorber bottom is located above the point saturated absorbent is fed into stripper with allowance for pressure difference in absorber and stripper.

EFFECT: reduced loss of absorbent and amount of desalinised water.

2 cl, 1 dwg, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to field of chemistry. Synthesis-gas from gas-generator 10 is supplied into reactor 64 for conversion of carbon oxide into carbon dioxide. From reactor 64 synthesis-gas is directed into absorption unit 12, containing one or several membrane contact filters 72. Synthesis-gas can be kept in internal volume 74, and in internal volume 76 - solvent. Membrane contact filters are located between two volumes 74 and 76. Ennobled synthesis-gas, leaving unit 12, consisting mainly of hydrogen, is supplied into gas turbine 6. Output gas from gas turbine 6 is supplied into system 8, where gas is caught and used for steam production. Steam, obtained in system 8, is supplied into system 66 for reduction of solvent.

EFFECT: inventions make it possible to reduce production expenditures due to reduction of equipment size and quantity of solvent.

10 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to gas cleaning of harmful impurities, extracting valuable components therefrom, in particular, to drying of natural gas to dew point. Proposed absorber comprises housing, gas and fluid inlet and discharge pipes, mass exchange section and entrainment trap. Note here that mass exchange section is composed of horizontal supports with preformed packing packs. Note also that said preformed packing pack is composed of corrugated sheets separated by flat-sheet spacers to make gas and fluid channels there between.

EFFECT: higher efficiency, decreased overall dimensions and metal input, lower consumption of adsorbent.

10 cl, 7 dwg

FIELD: heating.

SUBSTANCE: heat exchanger is offered which consists of the housing with supply and discharge heat carrier branch pipes. Along the heat exchanger axis the units of heat exchange elements with two peripheral distributive headers of the second heat carrier forming peripheral and axial headers of the first heat carrier are installed. Each of heat exchange elements is made hollow with odd amount of radial cuts where the transversal partitions are arranged, while walls of heat exchange elements have radially directed spacing ledges from one of the sides which alternately form in the external cavity the slot-hole channels for the first heat carrier, and in the internal cavity - for the second heat carrier.

EFFECT: design simplification, avoidance of requirements to configuration, increase of average temperature head.

3 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method of rectification of hydrocarbon mixes comprising the adding of methane containing gas to the hydrocarbon mix, heating and supply of the obtained mix into the supply section of the rectifying column. The methane containing gas is mixed with the hydrocarbon mix using the ejection method, while from the cube of the rectifying column the residue is separated a part of which, used as a hot flow, is mixed with the methane containing gas using the ejection method and the mix from the ejector is heated and supplied into the cube of the rectifying column.

EFFECT: improvement of the process of hydrocarbon mix rectification due to decrease of content of low-boiling components in diesel fraction.

1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to systems and a method of separating alcohol, particularly butanol, from fermented material and thickening thin stillage into evaporator syrup. The method includes separating at least part of fermented material in a distillation column, wherein pressure is kept below atmospheric pressure in order to obtain vapour with high alcohol content and still residue with low alcohol content, containing thin stillage; evaporating water from the thin stillage to obtain a first intermediate stillage and first-step vapour using at least two series-connected first-step evaporators; evaporating water from the first intermediate stillage, carried out using heat from the first-step vapour to obtain a second intermediate stillage and second-step vapour using at least two series-connected second-step evaporators; evaporating water from the second intermediate stillage, carried out using heat from the second-step vapour to obtain evaporator syrup using at least one third-step evaporator; using at least part of the last-step vapour generated by the last-step evaporator to obtain heat used to distil the fermented material in the distillation column; and using vapour from the apparatus to provide sufficient heat to evaporate water from the thin stillage in the first-step evaporator.

EFFECT: improved power saving.

38 cl, 16 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: separation of products of a hydrocracking reaction is realised in three stages, at the first stage a low-pressure gas, liquefied hydrocarbon gases, a light gasoline fraction and a weighted product of hydrocracking are obtained, with the light gasoline fraction being obtained in the first atmospheric column as a side run, at the second stage obtained are: heavy gasoline, kerosene, Diesel fuel of at least two types, including winter, summer and arctic ones and a non-converted residue, in which the content of light fractions, boiling away to 360°C, do not exceed 3 wt %, at the third stage obtained are: light stable gasoline, a purified stabilisation gas, applied as a raw material for the Clause process for obtaining element sulphur. The invention also deals with a hydrocracking installation with obtaining motor fuels.

EFFECT: extension of the product assortment.

22 cl, 1 dwg, 1 tbl, 1 ex

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to the method of stabilisation of unstable gas condensate mixed with oil, which is implemented in two series operated strings fitted with contact and drain devices, from the top of the first column hydrogen sulphide, methylmercaptan and light hydrocarbons are separated, from the bottom deeply dimethyl- mercaptanised stabilite is separated which sent to the second rectifying column from which the hydrocarbonic fractions are separated which contain the mercaptans extracted later as odorants, nk-65°C, nk-75°C, or nk-130°C in which respectively ethyl mercaptan, isomerous and normal propyl mercaptan and isomeric and normal butyl mercaptan or mixes of the respective merkaptan are concentrated, and from the string bottom the heavy rest is taken away. The invention also relates to the unit for stabilisation of unstable gas condensate mixed with oil.

EFFECT: refining of oil and gas condensate from hydrogen sulphide and a methylmercaptan, production of the range of hydrocarbon fractions.

14 cl, 3 dwg, 3 tbl, 4 ex

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method of the preliminary oil distillation, where during oil distillation in atmosphere and vacuum rectifiers with production of the benzene and diesel fractions, atmosphere and vacuum gasoil and tar the first and second atmosphere rectifiers are equipped with semi-dead trays, that are connected by pipelines, respectively with the second atmosphere rectifier and vacuum column ensuring creation of the additional liquid refluxing.

EFFECT: reduced power consumption for the process and rational use of heavy oil fraction removed from semi-dead tray of the second atmosphere column.

3 cl, 1 dwg, 3 tbl

FIELD: machine building.

SUBSTANCE: device contains the distillation still with pre-heater, column divided through height by the horizontal partitions. Lines for separate supply of the input feed and carrier are equipped with heaters. Device contains carrier recycling line, product fractions condensation unit in form of the nozzle type fractional column and product fractions outlet branch pipes. In the distilling still the bubbler is installed. The column partitions are partially perforated, and between perforation zones without clearance the pore nozzle blocks are installed. The product fractions outlet branch pipes are installed on the column above planes of the appropriate horizontal partitions. Inlet branch pipe of the feed supply line is installed below the product fractions outlet branch pipes. The device can include feed recycle line from the distilling still connecting to the feed supply line. The bubbler is made in form of the gas-liquid riser with internal circulation. In the distilling still the pore gas-permeable heater is installed above the liquid phase surface of the distillable product.

EFFECT: increased productivity, reduced size and weight characteristics.

4 cl, 2 dwg, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to production of rectified ethyl alcohol from mash distillation fractions. The method includes removing head and intermediate impurities from alcohol in an epuration column with hydroselection, collecting the head impurities from the condenser of the epuration column, fortifying the epurate in an alcohol column and purifying the alcohol in a methanol column. Epuration is carried out in an epuration column with intense supply of hot water for hydroselection into the top plate and the middle part of the epuration column. The head and intermediate impurities are collected from the condenser of the epuration column. The intermediate impurities are collected from the middle part of the alcohol column and fed into the middle part of the column for concentration of head and intermediate impurities. The head fraction from the condenser of the epuration column is fed into the middle part of the column for concentration of head and intermediate impurities. The concentrate of the head and intermediate impurities is collected from the reflux column and the condenser of the latter. Lutter water from the alcohol column is fed into the top plate and the middle part of the column for concentration of head and intermediate impurities. The still liquor of the latter is fed into the top plate and the middle part of the epuration column.

EFFECT: obtaining alcohol of high quality with high output of the product.

2 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes delivery of heated non-stable hydrocarbon fraction into the middle part of the stabiliser, which top is cooled and the bottom is heated, output of vapours from the top and output of the stable hydrocarbon fraction from the stabiliser bottom. A fractionating unit with falling film that includes the upper and lower sections of heat-mass-exchange elements and the feed zone placed between them is used as the stabiliser. The heat-mass-exchange elements comprise shaped vertical surfaces, which form inner space for passage of heat carrier or cooling agent and outer space for counterflow of liquid and vapour. The lower unit is heated by feeding of the heated non-stable hydrocarbon fraction as heat carrier to the bottom part of the heat-mass-exchange elements in the lower section; the fraction is outputted up to the unit top, constricted up to stabilisation pressure and feed to the feed zone. The upper part of the unit is cooled by feeding of the coolant to the top part in the inner space of the heat-mass-exchange elements in the upper section; the coolant is outputted from its bottom part. The stabilising gas is outputted from the top of the fractionating unit as stabilisation vapours.

EFFECT: reducing steel intensity, excluding costs of electric energy, decreasing energy costs.

1 dwg, 1 ex

FIELD: oil and gas industry.

SUBSTANCE: procedure includes input of heated raw stock to the rectification tower using spraying and separating gasoline fraction from its top and gas oil fraction from its bottom, input of the heated flow to the bottom section of the rectification tower, stabilisation of gasoline fraction with receipt of gas and stable gasoline. Stabilisation of gasoline fraction is made by discharge of the side stream from the rectification tower to a steaming section and heat delivery to the bottom of the latter, return of vapours from the steaming section to the rectification tower and discharge of stable gasoline. The gasoline fraction from the rectification tower top is heated by stable gasoline and fed to the upper part of the steaming section. Wet gas from the gas separator top is fed to the absorber bottom and cooled gas oil fraction is fed to the absorber top from the rectification tower bottom. Gas is discharged from the absorber top and liquid from the absorber bottom is returned above the pint of the heated stock input to the rectification tower.

EFFECT: reducing power consumption and improving quality of the separated products.

1 dwg, 2 tbl

FIELD: distillery industry; production of alcohol.

SUBSTANCE: the invention presents a method of production of a rectified alcohol and is dealt with the field of a distillery industry, in particular with methods of production of a food rectified alcohol. The method provides for digestion of the alcohol from a brew in a brew column with transition of ethyl alcohol and accompanying impurities together with a vapor from this column in a brew distillate, purification of the brew distillate from the head and intermediate impurities including components of the fusel oil in an epuration column with feeding of hot water onto its upper plate, fractionation of the epurate in the alcohol column with separation of fractions of fusel oil, fusel alcohol and unpasteurized alcohol, distillation of fractions of the head and intermediate impurities of the ethyl alcohol in the distillation column. The fusel alcohol from the alcohol column and fractions from the condensers of the alcohol column and the methanol column are fed onto the upper plate of the distillation column and also the alcohol traps of pure distillates. Hot water is fed into the upper zone of the distillation column for hydroselection of the head impurities, propyl alcohols and otherintermediate impurities, which are extracted from the condenser of this column in the form of a concentrate of the head impurities and propyl alcohols, and the bottom liquid of the distillation column is directed on a feeding plate of the epuration column. The invention allows to raise quality of alcohol.

EFFECT: the invention allows to raise quality of alcohol.

2 ex

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