RU2016145302A - The method of absorption of carbon dioxide from gas mixtures with absorbents containing aqueous solutions of amines - Google Patents

The method of absorption of carbon dioxide from gas mixtures with absorbents containing aqueous solutions of amines Download PDF

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Publication number
RU2016145302A
RU2016145302A RU2016145302A RU2016145302A RU2016145302A RU 2016145302 A RU2016145302 A RU 2016145302A RU 2016145302 A RU2016145302 A RU 2016145302A RU 2016145302 A RU2016145302 A RU 2016145302A RU 2016145302 A RU2016145302 A RU 2016145302A
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Russia
Prior art keywords
carbon dioxide
absorbent
evaporator
saturated
saturated absorbent
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RU2016145302A
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Russian (ru)
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RU2659991C2 (en
RU2016145302A3 (en
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Александр Константинович Аветисов
Александр Моисеевич Соколов
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Александр Константинович Аветисов
Александр Моисеевич Соколов
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Priority to RU2016145302A priority Critical patent/RU2659991C2/en
Publication of RU2016145302A3 publication Critical patent/RU2016145302A3/ru
Publication of RU2016145302A publication Critical patent/RU2016145302A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/14Separation 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/40Capture or disposal of greenhouse gases of CO2

Claims (5)

1. Способ абсорбционного выделения диоксида углерода из газовых смесей абсорбентом, содержащим водный раствор аминов по циркуляционной схеме, включающий абсорбцию диоксида углерода из газовой смеси при повышенном давлении (6-90 ата) и умеренной температуре (30-85°С) в абсорбере с массообменными устройствами, снижение давления насыщенного абсорбента, нагрев насыщенного абсорбента в первом рекуперационном теплообменнике и частичную десорбцию с выделением из него до 30% диоксида углерода, паров воды и малорастворимых газов с отводом выделенных газов при помощи сепаратора, нагрев насыщенного абсорбента во втором рекуперационном теплообменнике, регенерацию полученного насыщенного абсорбента при пониженном давлении (1,2-3 ата) и при повышении температуры (до 115-135°С) в регенераторе, снабженном массообменными устройствами, с подводом тепла в нижнюю часть регенератора при помощи кипятильников, с получением горячего регенерированного абсорбента и с выделением газа регенерации, состоящего из диоксида углерода и паров воды, охлаждение регенерированного абсорбента во втором и первом рекуперационном теплообменниках перед подачей его насосами на абсорбцию, отличающийся тем, что снижение давления насыщенного абсорбента после абсорбции производят до значения, ниже парциального давления диоксида углерода в очищаемой газовой смеси, с предварительной десорбцией из него диоксида углерода, паров воды, малорастворимых компонентов газовой смеси, с отводом выделенных газов при помощи сепаратора до нагрева насыщенного абсорбента в рекуперационном теплообменнике-испарителе.1. The method of absorption of carbon dioxide from gas mixtures with an absorbent containing an aqueous solution of amines according to the circulation scheme, including the absorption of carbon dioxide from a gas mixture at elevated pressure (6-90 ata) and moderate temperature (30-85 ° C) in an absorber with mass transfer devices, reducing the pressure of the saturated absorbent, heating the saturated absorbent in the first recuperative heat exchanger and partial desorption with the release of up to 30% of carbon dioxide, water vapor and sparingly soluble gases with the outlet allocated x gases using a separator, heating the saturated absorbent in the second heat recovery exchanger, regenerating the resulting absorbent under reduced pressure (1.2-3 atm) and increasing the temperature (to 115-135 ° C) in a regenerator equipped with mass transfer devices, with a supply heat to the lower part of the regenerator with the help of boilers, to produce a hot regenerated absorbent and to produce a regeneration gas consisting of carbon dioxide and water vapor, cooling the regenerated absorbent in the second and first recuperative heat exchangers before pumping it to absorption, characterized in that the pressure of the saturated absorbent after absorption is reduced to a value lower than the partial pressure of carbon dioxide in the gas mixture being purified, with preliminary desorption of carbon dioxide, water vapor, and slightly soluble components of the gas mixture from it, s removal of the released gases using a separator until the saturated absorbent is heated in a recovery heat exchanger-evaporator. 2. Способ по п. 1, отличающийся тем, что насыщенный абсорбент после предварительной десорбции из него диоксида углерода, паров воды, малорастворимых компонентов газовой смеси до нагрева насыщенного абсорбента в рекуперационном теплообменнике-испарителе делят на два потока, первый поток (65-85%) после предварительной десорбции из него диоксида углерода и нагрева насыщенного абсорбента в рекуперационном теплообменнике-испарителе подают в среднюю часть регенератора, а другой поток (15-35%), подают в верхнюю часть регенератора, минуя теплообменник-испаритель.2. The method according to p. 1, characterized in that the saturated absorbent after preliminary desorption of carbon dioxide, water vapor, sparingly soluble components of the gas mixture before heating the saturated absorbent in a recovery heat exchanger-evaporator is divided into two streams, the first stream (65-85% ) after preliminary desorption of carbon dioxide from it and heating of the saturated absorbent in a recovery heat exchanger-evaporator, it is fed into the middle part of the regenerator, and another stream (15-35%) is fed into the upper part of the regenerator, bypassing the heat exchangers k-evaporator. 3. Способ по п. 1, отличающийся тем, что насыщенный абсорбент после частичной десорбции из него диоксида углерода, паров воды, малорастворимых компонентов газовой смеси направляют в рекуперационный теплообменник-испаритель при помощи насоса.3. The method according to p. 1, characterized in that the saturated absorbent after partial desorption of carbon dioxide, water vapor, sparingly soluble components of the gas mixture is sent to a recovery heat exchanger-evaporator using a pump. 4. Способ по п. 1, отличающийся тем, что сепаратор, обеспечивающий предварительную десорбцию размещают на высоте, которая позволяет подавать насыщенный абсорбент в теплообменник-испаритель и в верхнюю часть регенератора самотеком без помощи насоса.4. The method according to p. 1, characterized in that the separator for preliminary desorption is placed at a height that allows the saturated absorbent to be fed to the heat exchanger-evaporator and to the upper part of the regenerator by gravity without the aid of a pump. 5. Способ по п. 1, отличающийся тем, что снижение давления насыщенного адсорбента после абсорбера осуществляют с помощью гидравлической турбины.5. The method according to p. 1, characterized in that the pressure reduction of the saturated adsorbent after the absorber is carried out using a hydraulic turbine.
RU2016145302A 2016-11-18 2016-11-18 Method of absorption distribution of carbon dioxide from gas mixtures by absorbents containing water solutions of amines RU2659991C2 (en)

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RU2723874C1 (en) * 2019-11-21 2020-06-17 Сергей Леонидович Терентьев Desorption unit (evaporation) with deep heat recovery

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SU1279658A1 (en) * 1985-01-03 1986-12-30 Предприятие П/Я Р-6603 Method of cleaning gas from carbon dioxide
RU2275231C2 (en) * 2003-04-02 2006-04-27 Федеральное государственное унитарное предприятие Государственный научный центр РФ "Научно-исследовательский физико-химический институт им. Л.Я. Карпова" Method of extraction of carbon dioxide from gasses
RU2329859C2 (en) * 2006-08-30 2008-07-27 Федеральное государственное унитарное предприятие "Научно-исследовательский физико-химический институт имени Л.Я. Карпова" Method of increasing pressure of carbon dioxide in course of its absorptive discharge from gaseous mixtures
RU2469773C1 (en) * 2011-07-14 2012-12-20 Общество с ограниченной ответственностью "Петон" Method of purification of liquified hydrocarbon gas from carbon dioxide
RU151188U1 (en) * 2013-12-24 2015-03-27 Александр Константинович Аветисов INSTALLATION OF ABSORPTIONAL ISSUE OF CARBON DIOXIDE FROM GAS MIXTURES BY ABSORBENTS CONTAINING AMINES
RU151189U1 (en) * 2013-12-24 2015-03-27 Александр Константинович Аветисов PLANT FOR ABSORPTIONAL ISSUE OF CARBON DIOXIDE FROM GAS MIXTURES BY ABSORBENTS CONTAINING AMINES

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