GB984069A - Process for separating ammonia from gas mixtures - Google Patents
Process for separating ammonia from gas mixturesInfo
- Publication number
- GB984069A GB984069A GB23850/63A GB2385063A GB984069A GB 984069 A GB984069 A GB 984069A GB 23850/63 A GB23850/63 A GB 23850/63A GB 2385063 A GB2385063 A GB 2385063A GB 984069 A GB984069 A GB 984069A
- Authority
- GB
- United Kingdom
- Prior art keywords
- melt
- acid
- gases
- vessel
- salts
- 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
- B01D53/14—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
-
- 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
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/12—Separation of ammonia from gases and vapours
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
<PICT:0984069/C1/1> NH3 is separated from gas mixtures by absorption in a melt containing an acid salt, i.e. having acid H atoms, followed by heating to desorb NH3. Preferred acid salts are the low-melting alkali metal and ammonium salts of H2SO4 and H3PO4. Substances capable of lowering the melting-point may be added, or a mixture of the above salts used. Desorption rate is increased by adding neutral salts, e.g. alkali metal sulphates and phosphates, and by use of a carrier gas, e.g. N2, H2, air or steam. A portion of the acid or neutral salt, and part or all of the ammonium salts formed, may be in solid form, suspended in the melt. The composition of the melt is maintained by adding water or steam, after desorption. The gas mixture may contain acid gases, viz. HCN, H2S, SO2, CO2, hydrogen halides, and other gases, e.g. H2. Continuous operation is effected in the apparatus shown: Gases are fed through pipe 1 into vessel 2, where melt 3 absorbs NH3 and flows out through pipe 5, while NH3-free gases leave at 4. Carrier gas enters at 6, and the melt is conveyed by gaslift or rotary pump 7 to desorption vessel 9, e.g. at 100 DEG C. higher than vessel 2. NH3 leaves at 10, and the melt flows back via siphon 14, and heat exchanger 12, to below the surface of melt 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED39363A DE1191347B (en) | 1962-07-13 | 1962-07-13 | Process for the separation of ammonia from gas mixtures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB984069A true GB984069A (en) | 1965-02-24 |
Family
ID=41346107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23850/63A Expired GB984069A (en) | 1962-07-13 | 1963-06-14 | Process for separating ammonia from gas mixtures |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE634789A (en) |
| CH (1) | CH451890A (en) |
| DE (1) | DE1191347B (en) |
| FR (1) | FR1367084A (en) |
| GB (1) | GB984069A (en) |
| NL (2) | NL293940A (en) |
-
1962
- 1962-07-13 DE DED39363A patent/DE1191347B/en active Pending
- 1962-07-13 NL NL293940A patent/NL293940A/xx unknown
- 1962-07-18 NL NL134889A patent/NL134889C/xx active
-
1963
- 1963-05-28 CH CH666163A patent/CH451890A/en unknown
- 1963-06-14 GB GB23850/63A patent/GB984069A/en not_active Expired
- 1963-07-10 BE BE634789A patent/BE634789A/xx unknown
- 1963-07-13 FR FR941402D patent/FR1367084A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE634789A (en) | 1963-11-18 |
| CH451890A (en) | 1968-05-15 |
| NL293940A (en) | 1963-06-12 |
| NL134889C (en) | 1963-06-12 |
| DE1191347B (en) | 1965-04-22 |
| FR1367084A (en) | 1964-07-10 |
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