RU2008124124A

RU2008124124A - METHOD FOR CLEANING GASES AND INSTALLATION FOR IMPLEMENTING THIS METHOD

Info

Publication number: RU2008124124A
Application number: RU2008124124/15A
Authority: RU
Inventors: Юрий Викторович Кушелев (RU); Юрий Викторович Кушелев; Николай Степанович Шибитов (RU); Николай Степанович Шибитов; Наталия Валерьевна Шибитова (RU); Наталия Валерьевна Шибитова
Original assignee: Юрий Викторович Кушелев (RU); Юрий Викторович Кушелев; Николай Степанович Шибитов (RU); Николай Степанович Шибитов; Наталия Валерьевна Шибитова (RU); Наталия Валерьевна Шибитова
Priority date: 2008-06-16
Filing date: 2008-06-16
Publication date: 2009-12-27
Also published as: RU2394635C2

Abstract

1. Способ очистки газов от сероводорода, меркаптанов и других серусодержащих соединений, углекислого газа и других кислых примесей абсорбционными методами с использованием раствора гидроксида натрия, отличающийся тем, что очищаемые газы под повышенным давлением 0,2-7 МПа последовательно обрабатываются двумя абсорбентами, сначала водным раствором средних натриевых солей сероводородной и угольной кислот с концентрацией 0,1-0,5 мас.%, затем водным раствором гидроксида натрия с концентрацией 10±5 мас.%. ! 2. Способ по п.1, отличающийся тем, что в качестве первого абсорбента используется раствор средних солей сероводородной и угольной кислот, образующийся при обработке очищаемых газов во втором абсорбере, разбавленных артезианской водой до концентрации 0,1-0,5 мас.%. ! 3. Способ по любому из пп.1 и 2, отличающийся тем, что отработанный абсорбционный раствор подвергается захоронению в глубокие изолированные водоносные горизонты. ! 4. Установка для осуществления способа очистки газов по любому из пп.1 и 2, отличающаяся тем, что в качестве ее основных элементов используют два абсорбера, соединенных последовательно, работающих под давлением, в первом из которых по ходу очищаемого газа обращается раствор средних солей сероводородной и угольной кислот, а во втором - раствор гидроксида натрия, установка также включает сепаратор для отделения сжиженных газов и паров воды, каждый абсорбер снабжен расходной емкостью для абсорбента, дозировочным насосом для подачи абсорбентов из расходных емкостей в абсорберы, сборниками отработанных абсорбентов и нагнетательным насосом, соединенным со сборником отработанного раствора из первого аб1. The method of purification of gases from hydrogen sulfide, mercaptans and other sulfur-containing compounds, carbon dioxide and other acidic impurities by absorption methods using a sodium hydroxide solution, characterized in that the gases to be purified under increased pressure of 0.2-7 MPa are sequentially treated with two absorbents, first with water a solution of medium sodium salts of hydrogen sulfide and carbonic acid with a concentration of 0.1-0.5 wt.%, then an aqueous solution of sodium hydroxide with a concentration of 10 ± 5 wt.%. ! 2. The method according to claim 1, characterized in that as the first absorbent, a solution of medium salts of hydrogen sulfide and carbonic acid is used, which is formed during the treatment of purified gases in a second absorber diluted with artesian water to a concentration of 0.1-0.5 wt.%. ! 3. The method according to any one of claims 1 and 2, characterized in that the spent absorption solution is buried in deep isolated aquifers. ! 4. Installation for implementing the gas purification method according to any one of claims 1 and 2, characterized in that two absorbers are used as its main elements, connected in series, working under pressure, in the first of which a solution of medium hydrogen sulfide salts is circulated along the gas to be purified and carbonic acids, and in the second - sodium hydroxide solution, the installation also includes a separator for separating liquefied gases and water vapor, each absorber is equipped with a consumable tank for absorbent material, a metering pump for supplying absorbent from supply containers in absorbers, collections of spent absorbent and a pressure pump connected to the collector of the first spent liquor ab

Claims

1. The method of purification of gases from hydrogen sulfide, mercaptans and other sulfur-containing compounds, carbon dioxide and other acidic impurities by absorption methods using a sodium hydroxide solution, characterized in that the gases to be purified under increased pressure of 0.2-7 MPa are sequentially treated with two absorbents, first with water a solution of medium sodium salts of hydrogen sulfide and carbonic acid with a concentration of 0.1-0.5 wt.%, then an aqueous solution of sodium hydroxide with a concentration of 10 ± 5 wt.%.

2. The method according to claim 1, characterized in that as the first absorbent, a solution of medium salts of hydrogen sulfide and carbonic acid is used, which is formed during the treatment of purified gases in a second absorber diluted with artesian water to a concentration of 0.1-0.5 wt.%.

3. The method according to any one of claims 1 and 2, characterized in that the spent absorption solution is buried in deep isolated aquifers.

4. Installation for implementing the gas purification method according to any one of claims 1 and 2, characterized in that two absorbers are used as its main elements, connected in series, working under pressure, in the first of which a solution of medium hydrogen sulfide salts is circulated along the gas to be purified and carbonic acids, and in the second - sodium hydroxide solution, the installation also includes a separator for separating liquefied gases and water vapor, each absorber is equipped with a consumable tank for absorbent material, a metering pump for supplying absorbent from supply containers in absorbers, collections of spent absorbent and a pressure pump connected with the collection of spent liquor from the absorber first to its disposal according to claim 3, the installation may also include a compressor upstream of the separator prior to compression gas to be purified.