GB477461A - An improved adsorptive reagent for the removal of odorous and otherwise objectionable gases and vapours from atmospheres and the product of such process - Google Patents
An improved adsorptive reagent for the removal of odorous and otherwise objectionable gases and vapours from atmospheres and the product of such processInfo
- Publication number
- GB477461A GB477461A GB18171/36A GB1817136A GB477461A GB 477461 A GB477461 A GB 477461A GB 18171/36 A GB18171/36 A GB 18171/36A GB 1817136 A GB1817136 A GB 1817136A GB 477461 A GB477461 A GB 477461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon
- charged
- carbons
- per cent
- removal
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/354—After-treatment
Abstract
An adsorptive reagent, particularly for the removal of vapours which are liable to taint foodstuffs or are odorous from atmospheres, comprises a mixture of activated carbon which has been charged with one or more halogens with activated carbon which has not been so charged. If desired, depending on the gases which it is desired to remove, the uncharged active carbon may comprise a mixture of different types of carbon, and the charged carbon may comprise different carbons charged with the same or different halogens, or portions of the same carbon treated with different halogens. It is stated that active carbons produced by impregnation of the raw carbonizable material with inorganic agents are more suitable for impregnation with halogen than active carbons not so produced. A suitable reagent for removing odours of foodstuffs comprises 10--25 per cent of iodized or chlorinated carbon known as AC carbon with 90--75 per cent of untreated carbon known as T111 carbon. The proportion of halogenized carbon may be increased to 50 per cent for removal of stronger odours. When objectionable bodies, such as hydrochloric acid, are produced by the action of the adsorbed materials upon the halogenized carbons, a secondary substance which reacts with such products, e.g. sodium carbonate or hexamethylene tetramine may be added. The latter reacts with acids to give formaldehyde, thus causing the adsorbent to act as a germicide. Instead of elementary halogen. the carbon may be impregnated with a readily decomposable compound such as sodium toluene para-chlorsulphonamine or toluene-para-sulphon-dichloramine.ALSO:An adsorptive reagent, particularly for the removal of vapours which are liable to taint foodstuffs or are odorous from atmospheres, comprises a mixture of activated carbon which has been charged with one or more halogens with activated carbon which has not been so charged. If desired, depending on the gases it is desired to remove, the uncharged active carbon may comprise a mixture of different types of carbon, and the charged carbon may also comprise different carbons charged with the same or different halogens, or portions of the same carbon treated with different halogens. It is stated that active carbons obtained by impregnation of the raw carbonizable material with inorganic agents are more suitable for impregnation with halogen than active carbon not so produced. A suitable reagent for removing odours of food-stuffs comprises 10-25 per cent of iodized or chlorinated carbon known as A.C. carbon with 90-75 per cent of untreated carbon known as TIII carbon. The proportion of halogenized carbon may be increased to 50 per cent for removal of stronger odours, e.g. in urinals. When objectionable bodies, such as hydrochloric acid, are produced by the action of the adsorbed materials upon the halogenized carbons, a secondary substance which reacts with such products, e.g. sodium carbonate or hexamethylene tetramine may be added. The latter reacts with acids to give formaldehyde, thus causing the adsorbent to act as a germicide. Instead of elementary halogen, the carbon may be impregnated with a readily decomposable compound such as sodium toluene parachlorsulphonamine or toluene-para-sulphone dichloramine.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU477461X | 1935-08-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB477461A true GB477461A (en) | 1937-12-30 |
Family
ID=3734547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18171/36A Expired GB477461A (en) | 1935-08-17 | 1936-06-30 | An improved adsorptive reagent for the removal of odorous and otherwise objectionable gases and vapours from atmospheres and the product of such process |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB477461A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2495498A1 (en) * | 1980-12-05 | 1982-06-11 | Takeda Chemical Industries Ltd | DEODORIZATION METHOD AND ADSORBENT USED THEREIN |
-
1936
- 1936-06-30 GB GB18171/36A patent/GB477461A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2495498A1 (en) * | 1980-12-05 | 1982-06-11 | Takeda Chemical Industries Ltd | DEODORIZATION METHOD AND ADSORBENT USED THEREIN |
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