DE407326C - Process for rendering the exhaust gases from sulphate pulp mills odorless - Google Patents
Process for rendering the exhaust gases from sulphate pulp mills odorlessInfo
- Publication number
- DE407326C DE407326C DEK88198D DEK0088198D DE407326C DE 407326 C DE407326 C DE 407326C DE K88198 D DEK88198 D DE K88198D DE K0088198 D DEK0088198 D DE K0088198D DE 407326 C DE407326 C DE 407326C
- Authority
- DE
- Germany
- Prior art keywords
- odorless
- rendering
- exhaust gases
- sulphate pulp
- pulp mills
- 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
- 239000007789 gas Substances 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 7
- 230000009965 odorless effect Effects 0.000 title claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims description 3
- 238000009877 rendering Methods 0.000 title claims description 3
- 229910021653 sulphate ion Inorganic materials 0.000 title claims description 3
- 238000005406 washing Methods 0.000 claims 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
- D21C11/08—Deodorisation ; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams
Landscapes
- Treating Waste Gases (AREA)
Description
Verfahren zum Geruchlosmachen der Abgase der Sulfatzellstoffabriken. Zusatz zum Patent 405612. Es hat sich herausgestellt, daß bei dem Verfahren nach dem Hauptpatent die Aufnahme der Merkaptane durch die Schwarzlauge begrenzt ist und daß es unter Umständen zur vollständigen Geruchlosmachung zweckmäßig ist, die Abgase noch mit Frischlauge nachzuwaschen.Process for rendering the exhaust gases from sulphate pulp mills odorless. Addendum to patent 405612. It has been found that in the process according to the main patent, the uptake of the mercaptans by the black liquor is limited and that it may be useful for complete odorlessness that Wash off exhaust gases with fresh lye.
Dieses Verfahren wird am besten in der Weise durchgeführt, daß man die vom Scheibenverdampfer abziehenden Gase zunächst mit Schwarzlauge vorwäscht und dann in einem Turm, wie er in dem Hauptpatent beschrieben ist, mit Frischlauge nachwäscht. Hierdurch erhält man vollkommen geruchlose Gase. Die Frischlauge wird in der üblichen Weise weiter verarbeitet.This procedure is best performed in such a way that one the gases withdrawn from the disc evaporator are first pre-washed with black liquor and then in a tower, as described in the main patent, with fresh liquor washes afterwards. This results in completely odorless gases. The fresh liquor will further processed in the usual way.
Statt Schwarzlauge kann man aber auch von vornherein nur Frischlauge verwenden, um die Gase vollständig geruchlos zu machen.Instead of black liquor, you can only use fresh liquor from the outset use to make the gases completely odorless.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK85796D DE405612C (en) | 1923-05-01 | 1923-05-01 | Method and device for rendering the exhaust fumes from sulphate pulp mills odorless |
DEK88198D DE407326C (en) | 1923-05-01 | 1924-01-24 | Process for rendering the exhaust gases from sulphate pulp mills odorless |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK85796D DE405612C (en) | 1923-05-01 | 1923-05-01 | Method and device for rendering the exhaust fumes from sulphate pulp mills odorless |
DEK88198D DE407326C (en) | 1923-05-01 | 1924-01-24 | Process for rendering the exhaust gases from sulphate pulp mills odorless |
Publications (1)
Publication Number | Publication Date |
---|---|
DE407326C true DE407326C (en) | 1924-12-10 |
Family
ID=32963350
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK85796D Expired DE405612C (en) | 1923-05-01 | 1923-05-01 | Method and device for rendering the exhaust fumes from sulphate pulp mills odorless |
DEK88198D Expired DE407326C (en) | 1923-05-01 | 1924-01-24 | Process for rendering the exhaust gases from sulphate pulp mills odorless |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK85796D Expired DE405612C (en) | 1923-05-01 | 1923-05-01 | Method and device for rendering the exhaust fumes from sulphate pulp mills odorless |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE405612C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0459962A1 (en) * | 1990-05-31 | 1991-12-04 | Chemrec Aktiebolag | Purification of process gas from a partial combustion of black liquor |
-
1923
- 1923-05-01 DE DEK85796D patent/DE405612C/en not_active Expired
-
1924
- 1924-01-24 DE DEK88198D patent/DE407326C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0459962A1 (en) * | 1990-05-31 | 1991-12-04 | Chemrec Aktiebolag | Purification of process gas from a partial combustion of black liquor |
Also Published As
Publication number | Publication date |
---|---|
DE405612C (en) | 1924-11-07 |
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