RU2609172C1 - Method of pretreatment of hydrocarbon gas - Google Patents

Method of pretreatment of hydrocarbon gas Download PDF

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RU2609172C1
RU2609172C1 RU2015145261A RU2015145261A RU2609172C1 RU 2609172 C1 RU2609172 C1 RU 2609172C1 RU 2015145261 A RU2015145261 A RU 2015145261A RU 2015145261 A RU2015145261 A RU 2015145261A RU 2609172 C1 RU2609172 C1 RU 2609172C1
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gas
stage
condensate
compressed
compression
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Андрей Владиславович Курочкин
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Андрей Владиславович Курочкин
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/265—Drying gases or vapours by refrigeration (condensation)
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/005—Processes comprising at least two steps in series
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
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    • C07C7/09—Purification; Separation; Use of additives by fractional condensation
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G5/00—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
    • C10G5/06—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas by cooling or compressing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/06—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation
    • F25J3/0605—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by partial condensation characterised by the feed stream
    • F25J3/061—Natural gas or substitute natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
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    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/08—Separating gaseous impurities from gases or gaseous mixtures or from liquefied gases or liquefied gaseous mixtures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1468—Removing hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1487—Removing organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1025—Natural gas
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
    • C10L2290/543—Distillation, fractionation or rectification for separating fractions, components or impurities during preparation or upgrading of a fuel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/102—Removal of contaminants of acid contaminants
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    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
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Abstract

FIELD: oil and gas industry.
SUBSTANCE: hydrocarbon gas 1 is compressed at the first stage 2 with cooling down the liquid hydrocarbons released during gas compression by the external refrigerant upon the conditions of partial condensation, obtaining the condensed fluid 4 and the pressure gas 5 which is compressed at the second stage 6 with cooling down the liquid hydrocarbons released during gas compression by the external refrigerant (is not depicted) and by the gas of low-temperature separation, which then is extracted as the pretreated gas 7, obtaining the condensed fluid 8 and the pressure gas 9, which is reduced by means of the device 10 and divided into the pretreated gas 7 and the condensed fluid 12, which is reduced by means of the device 13 and deethanizated in the separating machine 16 jointly with the reduced in the devices 14 and 15 condensed fluids 4 and 8 of the first and the second stages 2 and 6 with obtaining the sales condensate 17 and the deethanizated gas 3, which is recycled to the first stage 2 of the compression. If necessary the purification from the hydrogen disulfide and the gas mercaptan is performed before one of the stages of compression, and/or gas dewatering in block 18 is made.
EFFECT: improving the quality of the condensed fluid and the pretreated gas.
2 cl, 1 dwg

Description

Изобретение относится к способам подготовки углеводородных газов путем низкотемпературной сепарации и может быть использовано для подготовки попутного нефтяного газа в нефтяной промышленности.The invention relates to methods for the preparation of hydrocarbon gases by low-temperature separation and can be used for the preparation of associated petroleum gas in the oil industry.

Известен способ подготовки углеводородного газа [RU 2202079, опубл. 10.04.2003 г., МПК F25J 3/00], включающий многоступенчатую сепарацию с промежуточным охлаждением газа, отделение углеводородного конденсата начальных ступеней сепарации, охлаждение его конденсатом низкотемпературной сепарации и смешение с газом в качестве абсорбента, а также охлаждение сторонним хладагентом, редуцирование и низкотемпературную сепарацию полученной смеси.A known method for the preparation of hydrocarbon gas [RU 2202079, publ. 04/10/2003, IPC F25J 3/00], including multi-stage separation with intermediate gas cooling, separation of hydrocarbon condensate at the initial stages of separation, cooling with condensate of low-temperature separation and mixing with gas as an absorbent, as well as cooling with external refrigerant, reduction and low-temperature separation of the resulting mixture.

Недостатками известного способа являются потери легких углеводородов с конденсатом и высокое давление его насыщенных паров.The disadvantages of this method are the loss of light hydrocarbons with condensate and the high pressure of its saturated vapors.

Наиболее близок по технической сущности к предлагаемому изобретению способ компримирования газа [RU 2524790, опубл. 10.08.2014 г., МПК F25J 3/00] путем сжатия и охлаждения компрессата хладагентом в условиях дефлегмации и стабилизации флегмы с получением сжатого (подготовленного) газа и конденсата.Closest to the technical nature of the present invention, a method of compressing gas [RU 2524790, publ. 08/10/2014, IPC F25J 3/00] by compressing and cooling the compress with refrigerant under reflux and stabilization of reflux to produce compressed (prepared) gas and condensate.

Недостатками данного способа при компримировании углеводородного газа являются низкое качество конденсата и подготовленного газа из-за высокого содержания легких углеводородов в первом и тяжелых углеводородов во втором.The disadvantages of this method when compressing hydrocarbon gas are the low quality of the condensate and the prepared gas due to the high content of light hydrocarbons in the first and heavy hydrocarbons in the second.

Задача изобретения - повышение качества конденсата и подготовленного газа.The objective of the invention is to improve the quality of the condensate and the prepared gas.

Техническим результатом является повышение качества конденсата за счет деэтанизации образующихся конденсатов после их редуцирования с рециркуляцией полученного газа, а также повышение качества подготовленного газа за счет низкотемпературной сепарации сжатого газа второй ступени.The technical result is an increase in the quality of the condensate due to the deethanization of the condensates formed after their reduction with recirculation of the obtained gas, as well as an increase in the quality of the prepared gas due to the low-temperature separation of the compressed gas of the second stage.

Указанный технический результат достигается тем, что в известном способе, включающем компримирование газа путем сжатия и охлаждения компрессата хладагентом в условиях дефлегмации с получением сжатого газа и конденсата, особенностью является то, что газ компримируют в две ступени совместно с газом деэтанизации, подаваемым на первую ступень, сжатый газ второй ступени подвергают низкотемпературной сепарации с получением подготовленного газа, который используют на второй ступени в качестве хладагента и выводят, и конденсата, который редуцируют и деэтанизируют совместно с редуцированными конденсатами первой и второй ступени с получением товарного конденсата и газа деэтанизации.The specified technical result is achieved by the fact that in the known method, comprising compressing the gas by compressing and cooling the compress with a refrigerant under reflux to produce compressed gas and condensate, the feature is that the gas is compressed in two stages together with the deethanization gas supplied to the first stage, the compressed gas of the second stage is subjected to low-temperature separation to obtain the prepared gas, which is used as a refrigerant in the second stage and removed, and condensate, which tsiruyut deetaniziruyut and together with reduced condensates first and second stage, to produce a condensate and gas deethanizer.

Низкотемпературную сепарацию осуществляют путем редуцирования и сепарации сжатого газа. Деэтанизацию конденсатов осуществляют, например, сепарацией. Компримирование на каждой ступени осуществляют с помощью одного или нескольких компрессоров, соединенных последовательно или параллельно. При необходимости перед одной из ступеней компримирования газ очищают от сероводорода и меркаптанов (например, абсорбцией) и/или осушают (например, адсорбцией).Low-temperature separation is carried out by reducing and separating compressed gas. The deethanization of condensates is carried out, for example, by separation. Compression at each stage is carried out using one or more compressors connected in series or in parallel. If necessary, before one of the stages of compression, the gas is purified from hydrogen sulfide and mercaptans (for example, by absorption) and / or dried (for example, by adsorption).

Низкотемпературная сепарация сжатого газа второй ступени с получением подготовленного газа, используемого на второй ступени в качестве хладагента, позволяет повысить его качество путем поддержания необходимой температуры на стадии низкотемпературной сепарации. Совместная деэтанизация редуцированных конденсатов обеспечивает повышение качества товарного конденсата за счет снижения содержания легких компонентов.The low-temperature separation of the compressed gas of the second stage to obtain the prepared gas used as the refrigerant in the second stage allows one to increase its quality by maintaining the necessary temperature at the stage of low-temperature separation. Joint deethanization of reduced condensates provides improved quality of marketable condensate by reducing the content of light components.

Согласно предлагаемому способу (фиг. 1) газ 1 компримируют на первой ступени 2 совместно с газом деэтанизации 3 с получением конденсата 4 и сжатого газа 5, который компримируют на второй ступени 6, с охлаждением компрессата внешним хладагентом (не показан) и подготовленным газом 7, который затем выводят, с получением конденсата 8 и сжатого газа 9, который редуцируют с помощью устройства 10 и разделяют в сепараторе 11 на подготовленный газ 7 и конденсат 12, который совместно с конденсатами первой 4 и второй 8 ступеней, редуцированными в устройствах 13, 14 и 15, соответственно, деэтанизируют, например, в сепараторе 16 с получением товарного конденсата 17 и газа деэтанизации 3. При необходимости перед одной из ступеней компримирования в блоке 18 (показан пунктиром перед условно первой ступенью) газ очищают от сероводорода и меркаптанов и/или осушают.According to the proposed method (Fig. 1), gas 1 is compressed in the first stage 2 together with deethanization gas 3 to produce condensate 4 and compressed gas 5, which is compressed in the second stage 6, with the compressor being cooled by an external refrigerant (not shown) and prepared gas 7, which is then withdrawn to obtain condensate 8 and compressed gas 9, which is reduced by means of device 10 and separated in a separator 11 into prepared gas 7 and condensate 12, which, together with condensates of the first 4 and second 8 stages, are reduced in devices 13, 14 and 15, respectively, deethanize, for example, in a separator 16 to obtain marketable condensate 17 and deethanization gas 3. If necessary, the gas is purified from hydrogen sulfide and mercaptans and / or dried before one of the compression stages in block 18 (shown by a dotted line before the conditionally first stage) .

При осуществлении предлагаемого способа 16,7 тыс. нм3/час газа углеводородного состава, об.%: азот 1,7; углекислый газ 0,8; метан 80,8; этан 6,4; пропан 3,4; бутаны 2,5; С5+ - остальное, при 40°C и 0,52 МПа совместно с 0,53 тыс. нм3/час газа деэтанизации сжимают до 1,6 МПа, компрессат охлаждают и сепарируют при 40°C с получением 0,9 т/час конденсата первой ступени и 16,9 тыс. нм3/час сжатого газа, который компримируют до 5,5 МПа с охлаждением компрессата внешним хладагентом и газом низкотемпературной сепарации до минус 1,5°C в условиях дефлегмации и стабилизации флегмы с получением 2,5 т/час конденсата и 15,9 тыс. нм3/час сжатого газа, который редуцируют до 2,1 МПа и сепарируют с получением 15,7 тыс. нм3/час подготовленного газа с метановым индексом 68 и 0,5 т/час конденсата, который редуцируют и деэтанизируют совместно с конденсатами первой и второй ступени с получением газа и 3,1 т/час конденсата с давлением насыщенного пара по Рейду 302 кПа.When implementing the proposed method 16.7 thousand nm 3 / hour of gas of hydrocarbon composition, vol.%: Nitrogen 1.7; carbon dioxide 0.8; methane 80.8; ethane 6.4; propane 3.4; 2,5 butanes; C 5+ - the rest, at 40 ° C and 0.52 MPa, together with 0.53 thousand nm 3 / h, the deethanization gas is compressed to 1.6 MPa, the compress is cooled and separated at 40 ° C to obtain 0.9 t / hour of condensate of the first stage and 16.9 thousand nm 3 / hour of compressed gas, which is compressed to 5.5 MPa with the cooling of the compressor by external refrigerant and low-temperature separation gas to minus 1.5 ° C under reflux and stabilization of reflux to obtain 2, 5 t / h of condensate and 15.9 thousand nm 3 / h of compressed gas, which is reduced to 2.1 MPa and separated to obtain 15.7 thousand nm 3 / h of prepared gas with m with a methane index of 68 and 0.5 t / h of condensate, which is reduced and deethanized together with condensates of the first and second stages to produce gas and 3.1 t / h of condensate with a saturated vapor pressure of 302 kPa according to Reid.

В аналогичных условиях согласно прототипу получен газ с метановым индексом 63 и конденсат с давлением насыщенных паров по Рейду 1375 кПа.Under similar conditions, according to the prototype, a gas with a methane index of 63 and condensate with a saturated vapor pressure of 1375 kPa were obtained.

Приведенный пример показывает, что предлагаемый способ позволяет повысить качество конденсата и подготовленного газа и может быть использован в промышленности.The above example shows that the proposed method improves the quality of the condensate and the prepared gas and can be used in industry.

Claims (2)

1. Способ подготовки углеводородного газа, включающий компримирование газа путем сжатия и охлаждения компрессата хладагентом в условиях дефлегмации с получением сжатого газа и конденсата, отличающийся тем, что газ компримируют в две ступени совместно с газом деэтанизации, подаваемым на первую ступень, сжатый газ второй ступени подвергают низкотемпературной сепарации с получением подготовленного газа, который используют на второй ступени в качестве хладагента и выводят, и конденсата, который редуцируют и деэтанизируют совместно с редуцированными конденсатами первой и второй ступени с получением товарного конденсата и газа деэтанизации.1. A method of preparing a hydrocarbon gas, comprising compressing the gas by compressing and cooling the compress with refrigerant under reflux conditions to produce compressed gas and condensate, characterized in that the gas is compressed in two stages together with the deethanization gas supplied to the first stage, the compressed gas of the second stage is subjected low-temperature separation to obtain the prepared gas, which is used in the second stage as a refrigerant and removed, and condensate, which is reduced and deethanized together with red cited condensates of the first and second stages to produce marketable condensate and deethanization gas. 2. Способ по п. 1, отличающийся тем, что перед одной из ступеней компримирования газ очищают от сероводорода и меркаптанов и/или осушают.2. The method according to p. 1, characterized in that before one of the stages of compression, the gas is purified from hydrogen sulfide and mercaptans and / or drained.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7357003B2 (en) * 2003-07-24 2008-04-15 Toyo Engineering Corporation Process and apparatus for separation of hydrocarbons
RU2524790C1 (en) * 2013-07-22 2014-08-10 Андрей Владиславович Курочкин Gas compression
RU2544648C1 (en) * 2014-01-09 2015-03-20 Андрей Владиславович Курочкин Method of low temperature gas separation
CN104807288A (en) * 2015-05-20 2015-07-29 西南石油大学 Condensed liquid recycling method for high-pressure natural gas

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7357003B2 (en) * 2003-07-24 2008-04-15 Toyo Engineering Corporation Process and apparatus for separation of hydrocarbons
RU2524790C1 (en) * 2013-07-22 2014-08-10 Андрей Владиславович Курочкин Gas compression
RU2544648C1 (en) * 2014-01-09 2015-03-20 Андрей Владиславович Курочкин Method of low temperature gas separation
CN104807288A (en) * 2015-05-20 2015-07-29 西南石油大学 Condensed liquid recycling method for high-pressure natural gas

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