GB1438120A - Removal of nitrogen oxides from flue gas - Google Patents
Removal of nitrogen oxides from flue gasInfo
- Publication number
- GB1438120A GB1438120A GB3653073A GB3653073A GB1438120A GB 1438120 A GB1438120 A GB 1438120A GB 3653073 A GB3653073 A GB 3653073A GB 3653073 A GB3653073 A GB 3653073A GB 1438120 A GB1438120 A GB 1438120A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stream
- mass
- alumina
- silica
- transition metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20761—Copper
Abstract
1438120 Gas purification EXXON RESEARCH & ENG CO 1 Aug 1973 [1 Sept 1972] 36530/73 Heading C1A Nitrogen oxides may be removed from a gas stream by adding ammonia to the stream to provide at least 0À5 mole of ammonia per mole of NO x and contacting the resultant stream under oxidizing conditions and at a gas inlet temperature of from 600‹ to 950‹ F. with a solid contact mass comprising at least one non-noble transition metal or compound thereof disposed on a refractory porous carrier having a surface area of at least 40 m.<SP>2</SP>/gram. The contact-mass may comprise copper or ferric oxide, supported on alumina, silica or alumina-silica. Other transition metal oxides which may be used include oxides of vanadium, chromium, molybdenum, tungsten, manganese, cobalt and nickel. The contact mass may be regnerated by treating with air or flue gas containing more than the usual amount of oxygen, or by reduction with hydrogen, carbon monoxide, methane, ethane, propane, butane, hexane or decane, mixed if desired with steam.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28583272A | 1972-09-01 | 1972-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1438120A true GB1438120A (en) | 1976-06-03 |
Family
ID=23095888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3653073A Expired GB1438120A (en) | 1972-09-01 | 1973-08-01 | Removal of nitrogen oxides from flue gas |
Country Status (8)
Country | Link |
---|---|
JP (2) | JPS6059004B2 (en) |
BE (1) | BE804317A (en) |
CA (1) | CA1007830A (en) |
DE (1) | DE2341242A1 (en) |
FR (1) | FR2197628B1 (en) |
GB (1) | GB1438120A (en) |
IT (1) | IT993099B (en) |
NL (1) | NL7312041A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4251496A (en) * | 1979-03-22 | 1981-02-17 | Exxon Research & Engineering Co. | Process for the removal of SOx and NOx from gaseous mixture containing the same |
DE3140657A1 (en) * | 1981-10-13 | 1983-04-28 | Alkem Gmbh, 6450 Hanau | Process for the final conditioning of an aqueous solution containing pollutants, especially radioactive and/or toxic pollutants |
DE3423744A1 (en) * | 1984-06-28 | 1986-01-09 | Bergwerksverband Gmbh, 4300 Essen | Process for separating out SO2 and NOx |
CN112569777A (en) * | 2019-09-27 | 2021-03-30 | 富利康科技股份有限公司 | Water-gas resistant denitration device and catalyst suitable for low-temperature environment |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1438120A (en) * | 1972-09-01 | 1976-06-03 | Exxon Research Engineering Co | Removal of nitrogen oxides from flue gas |
JPS5012393B2 (en) * | 1973-03-13 | 1975-05-12 | ||
JPS5523086B2 (en) * | 1973-03-26 | 1980-06-20 | ||
JPS525433B2 (en) * | 1973-04-18 | 1977-02-14 | ||
JPS5511892B2 (en) * | 1973-04-18 | 1980-03-28 | ||
GB1474184A (en) * | 1973-05-08 | 1977-05-18 | Shell Int Research | Process for removing sulphur oxides and particulate matter from waste gases and apparatus therefor |
JPS5315705B2 (en) * | 1973-05-12 | 1978-05-26 | ||
US4107272A (en) * | 1973-05-21 | 1978-08-15 | Hitachi, Ltd. | Process for removing nitrogen oxides using ammonia as a reductant and sulfated metallic catalysts |
JPS5041764A (en) * | 1973-08-17 | 1975-04-16 | ||
JPS5621450B2 (en) * | 1973-09-29 | 1981-05-19 | ||
US4085193A (en) * | 1973-12-12 | 1978-04-18 | Mitsubishi Petrochemical Co. Ltd. | Catalytic process for reducing nitrogen oxides to nitrogen |
JPS5515247B2 (en) * | 1974-06-11 | 1980-04-22 | ||
JPS5116273A (en) * | 1974-07-31 | 1976-02-09 | Hitachi Ltd | DATSUSHOSOCHINIOKERU NH3 CHUNYURYONO SEIGYOHO |
JPS5118262A (en) * | 1974-08-06 | 1976-02-13 | Japan Gasoline | Haigasuchuno chitsusosankabutsuno jokyohoho |
JPS5127865A (en) * | 1974-09-02 | 1976-03-09 | Asahi Chemical Ind | |
JPS539598B2 (en) * | 1974-09-10 | 1978-04-06 | ||
JPS542913B2 (en) * | 1974-09-19 | 1979-02-15 | ||
US4031185A (en) * | 1975-02-03 | 1977-06-21 | Hitachi, Ltd. | Process for making nitrogen oxides contained in flue gas harmless |
JPS51108666A (en) * | 1975-03-20 | 1976-09-27 | Asahi Glass Co Ltd | |
US4104361A (en) * | 1975-03-28 | 1978-08-01 | Exxon Research & Engineering Co. | Catalyst for reduction of nitrogen oxides and process for preparing the same |
JPS5210856A (en) * | 1975-07-16 | 1977-01-27 | Kyushu Sekisui Kogyo Kk | Process and apparatus for removal of nitrogen oxides |
JPS5230285A (en) * | 1975-09-03 | 1977-03-07 | Seitetsu Kagaku Co Ltd | Regeneration method of catalyst |
JPS609201B2 (en) * | 1975-09-29 | 1985-03-08 | 株式会社日立製作所 | Exhaust heat recovery boiler equipment |
NL7601371A (en) * | 1976-02-11 | 1977-08-15 | Shell Int Research | PROCEDURE FOR THE SIMULTANEOUS REMOVAL OF NITROGEN OXIDES AND SULFUR OXIDES FROM A GAS FLOW. |
FR2466434A1 (en) * | 1979-10-01 | 1981-04-10 | Uop Inc | Sepn. of sulphur and nitrogen oxide(s) from gas mixt. - by contacting mixt. and ammonia with sulphur oxide(s) acceptor of copper (oxide) dispersed on ruthenium and rhenium oxide(s) compsn. |
JPS56150421A (en) * | 1980-04-23 | 1981-11-20 | Hitachi Ltd | Cleaning of waste gas |
JPH0747130B2 (en) * | 1991-07-23 | 1995-05-24 | 株式会社コロイドリサーチ | Method for producing nitrogen oxide decomposition catalyst |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1438120A (en) * | 1972-09-01 | 1976-06-03 | Exxon Research Engineering Co | Removal of nitrogen oxides from flue gas |
-
1973
- 1973-08-01 GB GB3653073A patent/GB1438120A/en not_active Expired
- 1973-08-01 CA CA177,868A patent/CA1007830A/en not_active Expired
- 1973-08-16 DE DE19732341242 patent/DE2341242A1/en not_active Withdrawn
- 1973-08-30 IT IT2839773A patent/IT993099B/en active
- 1973-08-31 NL NL7312041A patent/NL7312041A/xx not_active Application Discontinuation
- 1973-08-31 FR FR7331621A patent/FR2197628B1/fr not_active Expired
- 1973-08-31 BE BE135200A patent/BE804317A/en unknown
- 1973-08-31 JP JP48097409A patent/JPS6059004B2/en not_active Expired
-
1975
- 1975-04-15 JP JP50044902A patent/JPS5837010B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4251496A (en) * | 1979-03-22 | 1981-02-17 | Exxon Research & Engineering Co. | Process for the removal of SOx and NOx from gaseous mixture containing the same |
DE3140657A1 (en) * | 1981-10-13 | 1983-04-28 | Alkem Gmbh, 6450 Hanau | Process for the final conditioning of an aqueous solution containing pollutants, especially radioactive and/or toxic pollutants |
DE3423744A1 (en) * | 1984-06-28 | 1986-01-09 | Bergwerksverband Gmbh, 4300 Essen | Process for separating out SO2 and NOx |
CN112569777A (en) * | 2019-09-27 | 2021-03-30 | 富利康科技股份有限公司 | Water-gas resistant denitration device and catalyst suitable for low-temperature environment |
Also Published As
Publication number | Publication date |
---|---|
CA1007830A (en) | 1977-04-05 |
BE804317A (en) | 1974-02-28 |
JPS5837010B2 (en) | 1983-08-13 |
JPS5123474A (en) | 1976-02-25 |
FR2197628B1 (en) | 1980-03-28 |
NL7312041A (en) | 1974-03-05 |
JPS4975464A (en) | 1974-07-22 |
JPS6059004B2 (en) | 1985-12-23 |
IT993099B (en) | 1975-09-30 |
DE2341242A1 (en) | 1974-03-21 |
FR2197628A1 (en) | 1974-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |