ES291843A1 - Procedure for the absorption of formaldehyde from a gas containing formaldehyde and water vapor (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the absorption of formaldehyde from a gas containing formaldehyde and water vapor (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES291843A1 ES291843A1 ES291843A ES291843A ES291843A1 ES 291843 A1 ES291843 A1 ES 291843A1 ES 291843 A ES291843 A ES 291843A ES 291843 A ES291843 A ES 291843A ES 291843 A1 ES291843 A1 ES 291843A1
- Authority
- ES
- Spain
- Prior art keywords
- formaldehyde
- absorption
- phase
- phenol
- water
- 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
- 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
- B01D53/14—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
- B01D53/1487—Removing organic compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/783—Separation; Purification; Stabilisation; Use of additives by gas-liquid treatment, e.g. by gas-liquid absorption
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
Abstract
Procedure for the absorption of formaldehyde from a gas containing formaldehyde and water vapor, under the formation of a concentrated solution containing formaldehyde and phenol, in an absorption system of more than one phase, characterized in that in a first phase the The gas is brought into contact with a circulating absorption solution containing, in addition to 5-50% by weight of water, 1-10 mol of formaldehyde per mol of phenol, the contact of which is carried out under continuous evacuation of part of this circulating solution as product to be obtained in an amount such that per unit of time the product evacuated contains an amount of formaldehyde that equals the quantity supplied of formaldehyde gaseiforme, after which the formaldehyde that has not been absorbed in the first phase is absorbed in a final phase of countercurrent absorption to water that is supplied continuously, adding to the resulting diluted solution of formaldehyde both phenol by u time as the final phase of absorption in the form of product obtained is finally evacuated, after which the mixture obtained from formaldehyde-phenol and water is supplied, as a substitution, to the absorption liquid circulating through the first absorption phase. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL283625 | 1962-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES291843A1 true ES291843A1 (en) | 1963-11-01 |
Family
ID=19754138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES291843A Expired ES291843A1 (en) | 1962-09-25 | 1963-09-20 | Procedure for the absorption of formaldehyde from a gas containing formaldehyde and water vapor (Machine-translation by Google Translate, not legally binding) |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE637661A (en) |
| CH (1) | CH453324A (en) |
| DE (1) | DE1192636B (en) |
| ES (1) | ES291843A1 (en) |
| GB (1) | GB970930A (en) |
| NL (2) | NL283625A (en) |
| SE (1) | SE312328B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1214996A (en) * | 1957-10-30 | 1960-04-13 | Montedison Spa | Improvements relating to concentrated urea-formaldehyde solutions |
-
0
- NL NL281069D patent/NL281069A/xx unknown
- NL NL283625D patent/NL283625A/xx unknown
- BE BE637661D patent/BE637661A/xx unknown
-
1963
- 1963-09-16 CH CH1140563A patent/CH453324A/en unknown
- 1963-09-18 DE DEST21090A patent/DE1192636B/en active Pending
- 1963-09-18 GB GB3678363A patent/GB970930A/en not_active Expired
- 1963-09-20 ES ES291843A patent/ES291843A1/en not_active Expired
- 1963-09-23 SE SE1038563A patent/SE312328B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE637661A (en) | |
| CH453324A (en) | 1968-06-14 |
| GB970930A (en) | 1964-09-23 |
| NL281069A (en) | |
| DE1192636B (en) | 1965-05-13 |
| NL283625A (en) | |
| SE312328B (en) | 1969-07-14 |
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