DE1072466B - - Google Patents
Info
- Publication number
- DE1072466B DE1072466B DENDAT1072466D DE1072466DA DE1072466B DE 1072466 B DE1072466 B DE 1072466B DE NDAT1072466 D DENDAT1072466 D DE NDAT1072466D DE 1072466D A DE1072466D A DE 1072466DA DE 1072466 B DE1072466 B DE 1072466B
- Authority
- DE
- Germany
- Prior art keywords
- evaporator
- acid
- line
- furfural
- waste liquor
- 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.)
- Pending
Links
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 42
- 239000002253 acid Substances 0.000 claims description 29
- 239000002699 waste material Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 16
- 150000002972 pentoses Chemical class 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 14
- 230000008020 evaporation Effects 0.000 claims description 13
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 10
- 238000004821 distillation Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 239000011507 gypsum plaster Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- LBPYPRXFFYUUSI-UHFFFAOYSA-N furan-2-carbaldehyde;hydrate Chemical compound O.O=CC1=CC=CO1 LBPYPRXFFYUUSI-UHFFFAOYSA-N 0.000 description 1
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/40—Radicals substituted by oxygen atoms
- C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
- C07D307/48—Furfural
- C07D307/50—Preparation from natural products
-
- 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
- D21C11/10—Concentrating spent liquor by evaporation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH356470T | 1957-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1072466B true DE1072466B (enrdf_load_html_response) | 1959-12-31 |
Family
ID=4511215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1072466D Pending DE1072466B (enrdf_load_html_response) | 1957-09-06 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH356470A (enrdf_load_html_response) |
| DE (1) | DE1072466B (enrdf_load_html_response) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT376717B (de) * | 1983-05-02 | 1984-12-27 | Chemiefaser Lenzing Ag | Verfahren zur gewinnung von furfurol aus sauren abwaessern der zellstoffgewinnung sowie anlage zur durchfuehrung des verfahrens |
-
0
- DE DENDAT1072466D patent/DE1072466B/de active Pending
-
1957
- 1957-09-06 CH CH356470D patent/CH356470A/de unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT376717B (de) * | 1983-05-02 | 1984-12-27 | Chemiefaser Lenzing Ag | Verfahren zur gewinnung von furfurol aus sauren abwaessern der zellstoffgewinnung sowie anlage zur durchfuehrung des verfahrens |
Also Published As
| Publication number | Publication date |
|---|---|
| CH356470A (de) | 1961-08-31 |
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