RU2586159C1 - Absorbent for cleaning gases from hydrogen sulphide and carbon dioxide - Google Patents
Absorbent for cleaning gases from hydrogen sulphide and carbon dioxide Download PDFInfo
- Publication number
- RU2586159C1 RU2586159C1 RU2014153968/05A RU2014153968A RU2586159C1 RU 2586159 C1 RU2586159 C1 RU 2586159C1 RU 2014153968/05 A RU2014153968/05 A RU 2014153968/05A RU 2014153968 A RU2014153968 A RU 2014153968A RU 2586159 C1 RU2586159 C1 RU 2586159C1
- Authority
- RU
- Russia
- Prior art keywords
- absorbent
- carbon dioxide
- gas
- hydrogen sulphide
- diethylene glycol
- Prior art date
Links
- 239000002250 absorbent Substances 0.000 title claims abstract description 35
- 230000002745 absorbent Effects 0.000 title claims abstract description 35
- 239000007789 gas Substances 0.000 title abstract description 19
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title abstract description 7
- 238000004140 cleaning Methods 0.000 title abstract description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 title abstract description 4
- 239000001569 carbon dioxide Substances 0.000 title abstract description 3
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims abstract description 14
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims abstract description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 10
- IMUDHTPIFIBORV-UHFFFAOYSA-N aminoethylpiperazine Chemical compound NCCN1CCNCC1 IMUDHTPIFIBORV-UHFFFAOYSA-N 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000746 purification Methods 0.000 claims description 9
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical group COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 3
- 125000004494 ethyl ester group Chemical group 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 description 11
- 238000011069 regeneration method Methods 0.000 description 11
- 230000002378 acidificating effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 102100022094 Acid-sensing ion channel 2 Human genes 0.000 description 3
- 101710099902 Acid-sensing ion channel 2 Proteins 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000001302 tertiary amino group Chemical group 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- -1 diethylene glycol ethers Chemical class 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000004885 piperazines Chemical class 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
Classifications
-
- 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
- B01D53/1462—Removing mixtures of hydrogen sulfide and carbon dioxide
-
- 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
- B01D53/1493—Selection of liquid materials for use as absorbents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Изобретение относится к области очистки газов от сероводорода и/или диоксида углерода и может быть использовано в газовой, нефтяной и нефтеперерабатывающей отраслях промышленности.The invention relates to the field of gas purification from hydrogen sulfide and / or carbon dioxide and can be used in the gas, oil and oil refining industries.
Известен абсорбент для очистки газов от H2S и CO2, содержащий водный раствор алканоламина или смесь алканоламинов (см. US 4368095, B01D 53/14, 1983 г.). В качестве алканоламинов используют соединения, содержащие первичные, вторичные или третичные аминогруппы, например моноэтаноламин (МЭА), диэтаноламин (ДЭА), метилдиэтаноламин (МДЭА). Недостатком известного абсорбента является невысокая эффективность по извлечению кислых компонентов (особенно для третичных аминов), повышенные затраты тепла при регенерации абсорбента (для первичных и вторичных аминов).Known absorbent for cleaning gases from H 2 S and CO 2 containing an aqueous solution of alkanolamine or a mixture of alkanolamines (see US 4368095, B01D 53/14, 1983). As alkanolamines, compounds containing primary, secondary or tertiary amino groups are used, for example, monoethanolamine (MEA), diethanolamine (DEA), methyldiethanolamine (MDEA). A disadvantage of the known absorbent is the low efficiency in the extraction of acidic components (especially for tertiary amines), increased heat consumption during regeneration of the absorbent (for primary and secondary amines).
Наиболее близким техническим решением к предлагаемому является абсорбент для очистки газов от H2S и CO2, содержащий водный раствор третичного алканоламина или смесь третичных алканоламинов и активатор (см. US 5348714, C01B 3/20, 1994 г.). В качестве третичного алканоламина используют соединения, содержащие третичные аминогруппы, например метилдиэтаноламин (МДЭА), а в качестве активатора используют производное пиперазина, пиперидина.The closest technical solution to the proposed is an absorbent for the purification of gases from H 2 S and CO 2 containing an aqueous solution of tertiary alkanolamine or a mixture of tertiary alkanolamines and an activator (see US 5348714, C01B 3/20, 1994). Compounds containing tertiary amino groups, for example methyldiethanolamine (MDEA), are used as tertiary alkanolamine, and a piperazine derivative, piperidine, is used as an activator.
Недостатком данного абсорбента является невысокая скорость регенерации насыщенного абсорбента, т.е. повышенные затраты тепловой энергии на десорбцию кислых компонентов.The disadvantage of this absorbent is the low regeneration rate of the saturated absorbent, i.e. increased costs of thermal energy for the desorption of acidic components.
Техническим результатом, на достижение которого направлено предлагаемое изобретение, является повышение скорости регенерации насыщенного абсорбента от кислых компонентов H2S и CO2, повышение качества очистки газа при сокращении затрат тепловой энергии.The technical result, the achievement of which the present invention is directed, is to increase the regeneration rate of a saturated absorbent from acidic components H 2 S and CO 2 , to improve the quality of gas purification while reducing thermal energy costs.
Данный технический результат достигается за счет того, что абсорбент для очистки газа от H2S и CO2, содержащий метилдиэтаноламин, аминоэтилпиперазин и воду, дополнительно содержит метиловый или этиловый эфир диэтиленгликоля при следующем соотношении компонентов, масс.%:This technical result is achieved due to the fact that the absorbent for gas purification from H 2 S and CO 2 , containing methyldiethanolamine, aminoethylpiperazine and water, additionally contains methyl or ethyl ether of diethylene glycol in the following ratio, wt.%:
Сущность изобретения поясняется примерами.The invention is illustrated by examples.
Для испытаний используют образцы метилдиэтаноламина (МДЭА), выпускаемого по ТУ 2423-005-11159873-2000, аминоэтилпиперазина (АЭП) фирмы Akzo Nobel (номер CAS 140-31-8), метиловый эфир диэтиленгликоля (МДЭГ) или этиловый эфир диэтиленгликоля (ЭДЭГ) (ТУ 2422-125-05766801-2003) с массовой долей эфира 99%, растворяя данные реагенты в воде в необходимой концентрации.For the tests, samples of methyldiethanolamine (MDEA) manufactured according to TU 2423-005-11159873-2000, aminoethyl piperazine (AEP) from Akzo Nobel (CAS number 140-31-8), diethylene glycol methyl ether (MDEG) or diethylene glycol ethyl ether (EDEG) are used. (TU 2422-125-05766801-2003) with a mass fraction of ether of 99%, dissolving these reagents in water in the required concentration.
Эксперимент по регенерации абсорбента проводят следующим образом.An absorbent regeneration experiment is carried out as follows.
В колбу объемом 0,25 дм с обратным водяным холодильником заливают по 100 дм3 испытуемого абсорбента, предварительно насыщенного СO2 до содержания 30 г/л, затем абсорбент нагревают до кипения с подачей через него азота со скоростью 2 л/ч при атмосферном давлении. Через определенные промежутки времени отбирают пробы раствора, в которых определяют остаточное содержание CO2 объемным методом.In a 0.25 dm flask with a reflux condenser, 100 dm 3 of the test absorbent is added, pre-saturated with CO 2 to a content of 30 g / l, then the absorbent is heated to boiling with a flow of nitrogen through it at a speed of 2 l / h at atmospheric pressure. At certain intervals, samples of the solution are taken in which the residual CO 2 content is determined by the volumetric method.
Результаты испытаний по регенерации насыщенных СО2 абсорбентов различного состава (известного и предлагаемого) приведены в таблице 1. Из таблицы 1 следует, что при подводе одного и того же количества тепла (соответствующих равным промежуткам времени) абсорбенты различного состава регенерируются с разной скоростью.The test results for the regeneration of saturated CO 2 absorbents of various compositions (known and proposed) are shown in table 1. From table 1 it follows that when the same amount of heat (corresponding to equal time intervals) is supplied, absorbents of different composition are regenerated at different speeds.
В качестве известного абсорбента использовали водный раствор, включающий 30 масс.% МДЭА при содержании АЭП 6 или 10 масс.% (поз. 1, 2). Предлагаемый абсорбент включает водный раствор 30-50 масс.% МДЭА, 2-10 масс.% АЭП и добавки метилового или этилового эфира ДЭГ в количестве 2-8 масс.% (поз. 3-9).An aqueous solution was used as a known absorbent, including 30 wt.% MDEA with an AED content of 6 or 10 wt.% (Pos. 1, 2). The proposed absorbent includes an aqueous solution of 30-50 wt.% MDEA, 2-10 wt.% AED and additives of methyl or ethyl ether DEG in an amount of 2-8 wt.% (Pos. 3-9).
Из таблицы 1 следует, что известный абсорбент на основе МДЭА без добавок эфиров обладает невысокой скоростью регенерации, причем остаточное содержание CO2 в абсорбенте через 15 мин составляет 13,5 г/л, через 30 - мин 7,3 г/л, а через 60 мин - 3,3 г/л.From table 1 it follows that the known absorbent based on MDEA without additives of esters has a low regeneration rate, and the residual CO 2 content in the absorbent after 15 min is 13.5 g / l, after 30 min 7.3 g / l, and after 60 min - 3.3 g / l.
Предлагаемый абсорбент с добавками МДЭГ (поз. 3-6) и ЭДЭГ (поз. 7-9) регенерируется существенно быстрее, что характеризуется остаточным содержанием CO2 по сравнению с известным абсорбентом за те же промежутки времени в 2-3 раза меньше.The proposed absorbent with the addition of MDEG (pos. 3-6) and EDEG (pos. 7-9) is regenerated much faster, which is characterized by a residual CO 2 content compared to the known absorbent for the same time periods of 2-3 times less.
Эксперименты по очистке газа проводят на опытной установке, включающей абсорбер с нерегулярной насыпной насадкой (10×10 мм), насос подачи абсорбента, тепловой регенератор амина, систему измерения и поддержания температуры, а также расходомеры газа и жидкости. В качестве модельного газа используют природный газ с давлением 50 атм, в который подают кислые компоненты (3,5% CO2 и 2,5% H2S). Подачу газа осуществляют со скоростью 10 м3/ч при температуре 22°C в нижнюю часть абсорбционной колонки, подачу абсорбента осуществляют со скоростью 15 л/ч при температуре 50°C наверх абсорбера. Содержание кислых компонентов в исходном и очищенном газе определяют хроматографически по ГОСТ 31371.1-2008. Экспериментальные данные приведены в таблице 2: составы абсорбентов по п. 1 - известного, по пп. 2-5 - предлагаемого.Gas purification experiments are carried out in a pilot plant, which includes an absorber with an irregular bulk nozzle (10 × 10 mm), an adsorbent supply pump, a thermal amine regenerator, a temperature measurement and maintenance system, and gas and liquid flow meters. Natural gas with a pressure of 50 atm is used as a model gas, into which acidic components (3.5% CO 2 and 2.5% H 2 S) are supplied. The gas supply is carried out at a speed of 10 m 3 / h at a temperature of 22 ° C in the lower part of the absorption column, the supply of absorbent material is carried out at a speed of 15 l / h at a temperature of 50 ° C up the absorber. The content of acidic components in the source and purified gas is determined chromatographically according to GOST 31371.1-2008. The experimental data are shown in table 2: the compositions of absorbents according to claim 1 - known, according to paragraphs. 2-5 - proposed.
Из данных таблицы 2 следует, что предлагаемый абсорбент позволяет уменьшить затраты тепла на регенерацию абсорбента при обеспечении требуемого качества очистки газа, либо повысить качество очистки газа от кислых компонентов (при фиксированном расходе тепла).From the data of table 2 it follows that the proposed absorbent can reduce the cost of heat for the regeneration of the absorbent while ensuring the required quality of gas purification, or to improve the quality of gas purification from acidic components (at a fixed heat consumption).
Эффективная массовая доля МДЭГ или ЭДЭГ составляет от 2 до 8%. Заявляемый интервал содержания эфиров диэтиленгликоля в абсорбенте обусловлен тем, что их массовая доля менее 2% в абсорбенте не изменяет существенно скорости регенерации в сравнении с известным абсорбентом, а увеличение массовой доли более 8% приводит к уменьшению скорости регенерации абсорбента.The effective mass fraction of MDEG or EDEG is from 2 to 8%. The claimed interval of the content of diethylene glycol ethers in the absorbent is due to the fact that their mass fraction of less than 2% in the absorbent does not significantly change the regeneration rate in comparison with the known absorbent, and an increase in the mass fraction of more than 8% leads to a decrease in the regeneration rate of the absorbent.
Использование предлагаемого абсорбента позволяет уменьшить затраты тепловой энергии на регенерацию до остаточного содержания СO2, в сравнении с известным абсорбентом на 15-25%. В то же время при одинаковых затратах энергии использование предлагаемого абсорбента, имеющего лучшие характеристики по регенерации, позволяет повысить эффективность очистки газа.Using the proposed absorbent can reduce the cost of thermal energy for regeneration to a residual content of CO 2 , compared with the known absorbent by 15-25%. At the same time, at the same energy costs, the use of the proposed absorbent, which has the best regeneration characteristics, can improve the efficiency of gas purification.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2014153968/05A RU2586159C1 (en) | 2014-12-30 | 2014-12-30 | Absorbent for cleaning gases from hydrogen sulphide and carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2014153968/05A RU2586159C1 (en) | 2014-12-30 | 2014-12-30 | Absorbent for cleaning gases from hydrogen sulphide and carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2586159C1 true RU2586159C1 (en) | 2016-06-10 |
Family
ID=56115289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2014153968/05A RU2586159C1 (en) | 2014-12-30 | 2014-12-30 | Absorbent for cleaning gases from hydrogen sulphide and carbon dioxide |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2586159C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2778305C1 (en) * | 2019-01-24 | 2022-08-17 | Мицубиси Хеви Индастриз Энджиниринг, Лтд. | Composite amine absorbent, method and apparatus for removing co2, or h2s, or both co2 and h2s |
| US11772041B2 (en) | 2019-01-24 | 2023-10-03 | Mitsubishi Heavy Industries, Ltd. | Composite amine absorbent, and device and method for removing CO2 or H2S, or both of CO2 and H2S |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5209914A (en) * | 1988-05-24 | 1993-05-11 | Elf Aquitaine Production | Liquid absorbing acidic gases and use thereof of in deacidification of gases |
| US8075673B2 (en) * | 2005-10-20 | 2011-12-13 | Basf Se | Absorption medium and method for removing carbon dioxide from gas streams |
| US8318114B2 (en) * | 2010-04-16 | 2012-11-27 | Nalco Company | Composition for treating acid gas |
| US8506683B2 (en) * | 2006-06-06 | 2013-08-13 | Mitsubishi Heavy Industries, Ltd. | Absorbent liquid, and apparatus and method for removing CO2 or H2S from gas with use of absorbent liquid |
| RU2513400C1 (en) * | 2012-11-12 | 2014-04-20 | Открытое акционерное общество "Газпром" | Absorbent for removing h2s and co2 from gases |
-
2014
- 2014-12-30 RU RU2014153968/05A patent/RU2586159C1/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5209914A (en) * | 1988-05-24 | 1993-05-11 | Elf Aquitaine Production | Liquid absorbing acidic gases and use thereof of in deacidification of gases |
| US8075673B2 (en) * | 2005-10-20 | 2011-12-13 | Basf Se | Absorption medium and method for removing carbon dioxide from gas streams |
| US8506683B2 (en) * | 2006-06-06 | 2013-08-13 | Mitsubishi Heavy Industries, Ltd. | Absorbent liquid, and apparatus and method for removing CO2 or H2S from gas with use of absorbent liquid |
| US8318114B2 (en) * | 2010-04-16 | 2012-11-27 | Nalco Company | Composition for treating acid gas |
| RU2513400C1 (en) * | 2012-11-12 | 2014-04-20 | Открытое акционерное общество "Газпром" | Absorbent for removing h2s and co2 from gases |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2778305C1 (en) * | 2019-01-24 | 2022-08-17 | Мицубиси Хеви Индастриз Энджиниринг, Лтд. | Composite amine absorbent, method and apparatus for removing co2, or h2s, or both co2 and h2s |
| US11772041B2 (en) | 2019-01-24 | 2023-10-03 | Mitsubishi Heavy Industries, Ltd. | Composite amine absorbent, and device and method for removing CO2 or H2S, or both of CO2 and H2S |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103221125B (en) | Acid gas absorbent compositions | |
| RU2423170C2 (en) | Absorbent liquid, device and method of removing co2 or h2s from gas using absorbent liquid | |
| JP5452222B2 (en) | Method for efficiently recovering carbon dioxide in gas | |
| CN102470340B (en) | acid gas scrubbing composition | |
| CA2777326C (en) | Acid gas absorbent, acid gas removal method, and acid gas removal device | |
| CN104168979B (en) | CO is absorbed from admixture of gas 2method | |
| ES2817475T3 (en) | Use of Morpholine-Based Hindered Amine Compounds for Selective Hydrogen Sulfide Removal | |
| JP6095579B2 (en) | Aqueous solution that efficiently absorbs and recovers carbon dioxide in exhaust gas, and carbon dioxide recovery method using the same | |
| JP5557426B2 (en) | Aqueous solution and method for efficiently absorbing and recovering carbon dioxide in gas | |
| JP2015524350A (en) | Aqueous alkanol absorbent composition comprising piperazine with enhanced removal of hydrogen sulfide from gas mixture and method of use thereof | |
| JP2015527189A (en) | Aqueous alkanolamine solution and process for removing H2S from gas mixtures | |
| KR102037878B1 (en) | Carbon Dioxide Absorbent And Method for Absorbing Carbon Dioxide Using the Same | |
| KR101955752B1 (en) | Liquid for absorbing and collecting carbon dioxide in gas, and method for collecting carbon dioxide with use of same | |
| JP7185421B2 (en) | Acid gas absorbent, method for removing acid gas, and apparatus for removing acid gas | |
| JP2016536115A (en) | Hybrid solvent formulation for total organic sulfur removal and total acid gas removal | |
| CA2893611A1 (en) | Method of absorbing co2 from a gas mixture | |
| CA2786323A1 (en) | Removal of co2 from gases having low co2 partial pressures by means of 1,2 diaminopropane | |
| JP2016533886A (en) | Gas sweetening solvent containing quaternary ammonium salt | |
| JP2016536115A5 (en) | ||
| JP2015027647A (en) | Acid gas absorbent, acid gas removal method, and acid gas removal apparatus | |
| CA2778796A1 (en) | Removal of co2 from gases of low co2 partial pressures by means of 2,2'-ethylenedioxy)bis(ethylamine) (edea) | |
| RU2586159C1 (en) | Absorbent for cleaning gases from hydrogen sulphide and carbon dioxide | |
| JP5039276B2 (en) | Absorbing liquid, apparatus and method for removing CO2 or H2S in gas using absorbing liquid | |
| KR101417214B1 (en) | Absorbent for the removal of carbon dioxide | |
| RU2513400C1 (en) | Absorbent for removing h2s and co2 from gases |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PD4A | Correction of name of patent owner | ||
| PC41 | Official registration of the transfer of exclusive right |
Effective date: 20191024 |