WO2008131871A1 - Absorptionsverfahren zur entfernung von sox und schwefelsäureaerosolen aus chlorhaltigen prozessgasen - Google Patents
Absorptionsverfahren zur entfernung von sox und schwefelsäureaerosolen aus chlorhaltigen prozessgasen Download PDFInfo
- Publication number
- WO2008131871A1 WO2008131871A1 PCT/EP2008/003108 EP2008003108W WO2008131871A1 WO 2008131871 A1 WO2008131871 A1 WO 2008131871A1 EP 2008003108 W EP2008003108 W EP 2008003108W WO 2008131871 A1 WO2008131871 A1 WO 2008131871A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chlorine
- sulfuric acid
- gas
- absorption
- sulfur
- Prior art date
Links
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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/507—Sulfur oxides by treating the gases with other liquids
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/202—Single element halogens
- B01D2257/2025—Chlorine
Definitions
- Chlorine-containing process gases are often dried using sulfuric acid. However, SOx and sulfuric acid aerosols are emitted into the chlorine gas.
- Sulfur-containing compounds are among the catalyst poisons and must therefore be removed from the process gas before catalysts to the lowest possible concentration.
- the present invention provides a technical solution to the problem of removing SOx and sulfuric acid aerosols from process gases while minimizing fresh water consumption.
- the starting point of the invention are the prior art conventional absorber, which have a high fresh water requirement and less effective depletion rates.
- SO x -containing exhaust gases by means of either
- Sodium hydroxide solution can not be used in the present case of application since it would also remove a large part of the chlorine from the gas.
- the recoverable purity of the gas stream depends essentially on the amount of fresh water.
- a minimum requirement of fresh water is predetermined by the required sprinkling density. As a result, large amounts of fresh water are needed.
- an improved process concept achieves a high purity of the chlorine gas with minimal consumption of fresh water.
- the invention relates to an absorption process for the separation of sulfur-containing components from chlorine-containing gases by absorption of the sulfur-containing components and chlorine in an aqueous medium in countercurrent and in the recirculation process, wherein the chlorine also oxidizes absorbed sulfur compounds in the pumped over wash medium.
- Particularly preferred is a method which is characterized in that the possibly present sulfuric acid droplets are separated off in a diffusion separator connected downstream of the absorption stage.
- the chlorine-containing gas is added to the bottom of a wash column in which it is washed with warm, chlorine-containing water in countercurrent. For this purpose, this water is trickled on packing or a structured packing.
- SO 2 -GaS is oxidized to SO 4 2 " and removed from the gas phase, and oxidation is carried out by the chlorine which is likewise dissolved.
- SO 3 dissolves in the wash water and likewise forms SO 4 2" .
- the chlorine-containing water is formed by absorption of chlorine from the gas phase to an equilibrium. Thereafter, only as much chlorine is absorbed as is consumed in the oxidation of the sulfur compounds.
- the filter medium typically consists of glass fiber mats and is flowed through in such a way that even very small drops reach the fibers due to the Brownian movement and are deposited there.
- the method is advantageously used in the desulfurization of chlorine-containing product gas from the particular thermo-catalytic oxidation of hydrogen chloride with oxygen, eg. B. according to the known Deacon process.
- a thermo-catalytic oxidation of hydrogen chloride with oxygen eg. B. according to the known Deacon process.
- a chlorine-containing and a chlorine-free gas mixture were added in two experiments from below into a wash column in which they were washed with warm water in countercurrent. For this, the water was trickled on packing. Sulfur-containing fog droplets were in a scrubbing column downstream diffusion separator (glass mat) from the
- the gas mixture I contained in addition to the SO 2 only nitrogen (comparison).
- the gas mixture II additionally contained 5% by volume of chlorine (according to the invention).
- the SO 2 was oxidized in the experiment with the gas mixture II through the also absorbed chlorine to sulfate and removed from the gas phase.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010504510A JP2010524827A (ja) | 2007-04-26 | 2008-04-14 | 塩素含有プロセスガスからSOxおよび硫酸エアロゾルを除去するための吸収方法 |
EP08735313A EP2164610A1 (de) | 2007-04-26 | 2008-04-14 | Absorptionsverfahren zur entfernung von sox und schwefelsäureaerosolen aus chlorhaltigen prozessgasen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007020141.0 | 2007-04-26 | ||
DE102007020141A DE102007020141A1 (de) | 2007-04-26 | 2007-04-26 | Recyclegaswäscher zur Entfernung von SOx und Schwefelsäureaerosolen aus chlorhaltigen Prozessgasen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008131871A1 true WO2008131871A1 (de) | 2008-11-06 |
Family
ID=39615775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/003108 WO2008131871A1 (de) | 2007-04-26 | 2008-04-14 | Absorptionsverfahren zur entfernung von sox und schwefelsäureaerosolen aus chlorhaltigen prozessgasen |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080264255A1 (de) |
EP (1) | EP2164610A1 (de) |
JP (1) | JP2010524827A (de) |
KR (1) | KR20100015863A (de) |
CN (1) | CN101663081A (de) |
DE (1) | DE102007020141A1 (de) |
WO (1) | WO2008131871A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011005897A1 (de) | 2011-03-22 | 2012-09-27 | Bayer Materialscience Aktiengesellschaft | Verfahren zur Bereitstellung von Chlor für chemische Umsetzungen |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4508593A (en) * | 1981-06-22 | 1985-04-02 | Mo Och Domsjo Aktiebolag | Process for recovery of sulfur dioxide liberated in the chemical pulping of lignocellulosic material |
EP0324845A1 (de) * | 1987-08-22 | 1989-07-26 | Hölter, Heinz, Dipl.-Ing. | Verfahren zur entschwefelung von rauchgasen aus kraftwerkskesselfeuerungen |
EP0406710A2 (de) * | 1989-07-01 | 1991-01-09 | Hoechst Aktiengesellschaft | Verfahren zur selektiven Absorption von Chlor und/oder Brom aus CO2-haltigen Abgasen mit Hilfe von Wasserdampf |
CN1358560A (zh) * | 2000-12-20 | 2002-07-17 | 贵研铂业股份有限公司 | 二氧化硫废气的净化处理方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4619608A (en) * | 1984-05-15 | 1986-10-28 | Isca Management Limited | Process for removal of pollutants from waste gas emissons |
CA2511311C (en) * | 2002-12-21 | 2011-09-20 | Haldor Topsoe A/S | Process for removal of so2 from off-gases by reaction with h2o2 |
-
2007
- 2007-04-26 DE DE102007020141A patent/DE102007020141A1/de not_active Withdrawn
-
2008
- 2008-04-14 WO PCT/EP2008/003108 patent/WO2008131871A1/de active Application Filing
- 2008-04-14 KR KR1020097022235A patent/KR20100015863A/ko not_active Application Discontinuation
- 2008-04-14 CN CN200880013004A patent/CN101663081A/zh active Pending
- 2008-04-14 JP JP2010504510A patent/JP2010524827A/ja not_active Withdrawn
- 2008-04-14 EP EP08735313A patent/EP2164610A1/de not_active Withdrawn
- 2008-04-28 US US12/110,546 patent/US20080264255A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4508593A (en) * | 1981-06-22 | 1985-04-02 | Mo Och Domsjo Aktiebolag | Process for recovery of sulfur dioxide liberated in the chemical pulping of lignocellulosic material |
EP0324845A1 (de) * | 1987-08-22 | 1989-07-26 | Hölter, Heinz, Dipl.-Ing. | Verfahren zur entschwefelung von rauchgasen aus kraftwerkskesselfeuerungen |
EP0406710A2 (de) * | 1989-07-01 | 1991-01-09 | Hoechst Aktiengesellschaft | Verfahren zur selektiven Absorption von Chlor und/oder Brom aus CO2-haltigen Abgasen mit Hilfe von Wasserdampf |
CN1358560A (zh) * | 2000-12-20 | 2002-07-17 | 贵研铂业股份有限公司 | 二氧化硫废气的净化处理方法 |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 200268, Derwent World Patents Index; AN 2002-628911, XP002489394 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011005897A1 (de) | 2011-03-22 | 2012-09-27 | Bayer Materialscience Aktiengesellschaft | Verfahren zur Bereitstellung von Chlor für chemische Umsetzungen |
Also Published As
Publication number | Publication date |
---|---|
JP2010524827A (ja) | 2010-07-22 |
CN101663081A (zh) | 2010-03-03 |
DE102007020141A1 (de) | 2008-10-30 |
EP2164610A1 (de) | 2010-03-24 |
KR20100015863A (ko) | 2010-02-12 |
US20080264255A1 (en) | 2008-10-30 |
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