GB1416617A - Filtration of cellulosic solutions - Google Patents
Filtration of cellulosic solutionsInfo
- Publication number
- GB1416617A GB1416617A GB4703873A GB4703873A GB1416617A GB 1416617 A GB1416617 A GB 1416617A GB 4703873 A GB4703873 A GB 4703873A GB 4703873 A GB4703873 A GB 4703873A GB 1416617 A GB1416617 A GB 1416617A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- bed
- cellulosic
- alkali
- solutions
- 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
- 238000001914 filtration Methods 0.000 title abstract 2
- WFDIJRYMOXRFFG-UHFFFAOYSA-N acetic acid anhydride Natural products CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 abstract 4
- 229920002678 cellulose Polymers 0.000 abstract 4
- 239000001913 cellulose Substances 0.000 abstract 4
- 239000003513 alkali Substances 0.000 abstract 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 2
- 101710178035 Chorismate synthase 2 Proteins 0.000 abstract 1
- 101710152694 Cysteine synthase 2 Proteins 0.000 abstract 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 abstract 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 abstract 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 abstract 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 abstract 1
- 229920000297 Rayon Polymers 0.000 abstract 1
- 229920002301 cellulose acetate Polymers 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 abstract 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 abstract 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 abstract 1
- 239000011236 particulate material Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
Classifications
-
- 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
- B01D37/00—Processes of filtration
-
- 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)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Filtering Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Artificial Filaments (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (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 |
|---|---|
| GB1416617A true GB1416617A (en) | 1975-12-03 |
Family
ID=23146189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4703873A Expired GB1416617A (en) | 1972-10-13 | 1973-10-09 | Filtration of cellulosic solutions |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5325346B2 (enrdf_load_stackoverflow) |
| KR (1) | KR790001111B1 (enrdf_load_stackoverflow) |
| BR (1) | BR7307863D0 (enrdf_load_stackoverflow) |
| CA (1) | CA983655A (enrdf_load_stackoverflow) |
| DE (1) | DE2350386A1 (enrdf_load_stackoverflow) |
| FI (1) | FI56861C (enrdf_load_stackoverflow) |
| FR (1) | FR2202896B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1416617A (enrdf_load_stackoverflow) |
Cited By (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 GB GB4703873A patent/GB1416617A/en not_active Expired
- 1973-10-09 BR BR7863/73A patent/BR7307863D0/pt unknown
- 1973-10-11 JP JP11337173A patent/JPS5325346B2/ja not_active Expired
- 1973-10-11 FR FR7336324A patent/FR2202896B1/fr 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
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188558A (en) * | 1986-04-07 | 1987-10-07 | Plenty Ltd | Filter medium |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2202896A1 (enrdf_load_stackoverflow) | 1974-05-10 |
| JPS4974243A (enrdf_load_stackoverflow) | 1974-07-17 |
| FI56861B (fi) | 1979-12-31 |
| FI56861C (fi) | 1980-04-10 |
| JPS5325346B2 (enrdf_load_stackoverflow) | 1978-07-26 |
| KR790001111B1 (ko) | 1979-09-03 |
| DE2350386A1 (de) | 1974-04-25 |
| BR7307863D0 (pt) | 1974-07-18 |
| CA983655A (en) | 1976-02-17 |
| FR2202896B1 (enrdf_load_stackoverflow) | 1977-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |