DE2350386A1 - Verfahren zur filtration von zelluloseloesungen - Google Patents
Verfahren zur filtration von zelluloseloesungenInfo
- Publication number
- DE2350386A1 DE2350386A1 DE19732350386 DE2350386A DE2350386A1 DE 2350386 A1 DE2350386 A1 DE 2350386A1 DE 19732350386 DE19732350386 DE 19732350386 DE 2350386 A DE2350386 A DE 2350386A DE 2350386 A1 DE2350386 A1 DE 2350386A1
- Authority
- DE
- Germany
- Prior art keywords
- solution
- cellulose
- undissolved
- filtration
- solvent
- 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
- 229920002678 cellulose Polymers 0.000 title claims description 63
- 239000001913 cellulose Substances 0.000 title claims description 63
- 238000001914 filtration Methods 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims description 42
- 229920000297 Rayon Polymers 0.000 claims description 34
- 239000002245 particle Substances 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 25
- 239000002904 solvent Substances 0.000 claims description 22
- 239000003513 alkali Substances 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000000376 reactant Substances 0.000 claims description 9
- 239000003153 chemical reaction reagent Substances 0.000 claims description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 229920002301 cellulose acetate Polymers 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 230000003381 solubilizing effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 2
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 2
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 2
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 2
- 239000002198 insoluble material Substances 0.000 claims 1
- 239000002923 metal particle Substances 0.000 claims 1
- 238000013517 stratification Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 76
- 239000000835 fiber Substances 0.000 description 14
- 239000000843 powder Substances 0.000 description 14
- 235000011121 sodium hydroxide Nutrition 0.000 description 13
- 229920000742 Cotton Polymers 0.000 description 10
- 239000007863 gel particle Substances 0.000 description 10
- 239000004744 fabric Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 229920003043 Cellulose fiber Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- -1 hydroxypropyl Chemical group 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- PTHCMJGKKRQCBF-UHFFFAOYSA-N Cellulose, microcrystalline Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC)C(CO)O1 PTHCMJGKKRQCBF-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M lithium hydroxide Inorganic materials [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000012991 xanthate Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/20—Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
- C08B11/22—Isolation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0288—Applications, solvents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/22—Post-esterification treatments, including purification
- C08B3/26—Isolation of the cellulose ester
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B9/00—Cellulose xanthate; Viscose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/08—Regeneration of the filter
- B01D2201/085—Regeneration of the filter using another chemical than the liquid to be filtered
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Artificial Filaments (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Filtering Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29740672A | 1972-10-13 | 1972-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2350386A1 true DE2350386A1 (de) | 1974-04-25 |
Family
ID=23146189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732350386 Pending DE2350386A1 (de) | 1972-10-13 | 1973-10-08 | Verfahren zur filtration von zelluloseloesungen |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5325346B2 (enrdf_load_html_response) |
| KR (1) | KR790001111B1 (enrdf_load_html_response) |
| BR (1) | BR7307863D0 (enrdf_load_html_response) |
| CA (1) | CA983655A (enrdf_load_html_response) |
| DE (1) | DE2350386A1 (enrdf_load_html_response) |
| FI (1) | FI56861C (enrdf_load_html_response) |
| FR (1) | FR2202896B1 (enrdf_load_html_response) |
| GB (1) | GB1416617A (enrdf_load_html_response) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188558A (en) * | 1986-04-07 | 1987-10-07 | Plenty Ltd | Filter medium |
-
1973
- 1973-09-24 FI FI2972/73A patent/FI56861C/fi active
- 1973-10-08 DE DE19732350386 patent/DE2350386A1/de active Pending
- 1973-10-09 BR BR7863/73A patent/BR7307863D0/pt unknown
- 1973-10-09 GB GB4703873A patent/GB1416617A/en not_active Expired
- 1973-10-11 FR FR7336324A patent/FR2202896B1/fr not_active Expired
- 1973-10-11 JP JP11337173A patent/JPS5325346B2/ja not_active Expired
- 1973-10-12 CA CA183,274A patent/CA983655A/en not_active Expired
- 1973-10-13 KR KR7301689A patent/KR790001111B1/ko not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1416617A (en) | 1975-12-03 |
| BR7307863D0 (pt) | 1974-07-18 |
| FR2202896A1 (enrdf_load_html_response) | 1974-05-10 |
| KR790001111B1 (ko) | 1979-09-03 |
| FI56861C (fi) | 1980-04-10 |
| CA983655A (en) | 1976-02-17 |
| JPS5325346B2 (enrdf_load_html_response) | 1978-07-26 |
| JPS4974243A (enrdf_load_html_response) | 1974-07-17 |
| FI56861B (fi) | 1979-12-31 |
| FR2202896B1 (enrdf_load_html_response) | 1977-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHA | Expiration of time for request for examination |