GB856331A - Process for conducting chemical reactions - Google Patents
Process for conducting chemical reactionsInfo
- Publication number
- GB856331A GB856331A GB33688/57A GB3368857A GB856331A GB 856331 A GB856331 A GB 856331A GB 33688/57 A GB33688/57 A GB 33688/57A GB 3368857 A GB3368857 A GB 3368857A GB 856331 A GB856331 A GB 856331A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- filter
- withdrawn
- reaction zone
- returned
- 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
- 238000006243 chemical reaction Methods 0.000 title abstract 7
- 238000000034 method Methods 0.000 title 1
- 239000007788 liquid Substances 0.000 abstract 12
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- 239000003054 catalyst Substances 0.000 abstract 3
- 239000002245 particle Substances 0.000 abstract 3
- 239000007787 solid Substances 0.000 abstract 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 abstract 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000007868 Raney catalyst Substances 0.000 abstract 2
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 abstract 2
- 229910000564 Raney nickel Inorganic materials 0.000 abstract 2
- 229910052763 palladium Inorganic materials 0.000 abstract 2
- HSKPJQYAHCKJQC-UHFFFAOYSA-N 1-ethylanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2CC HSKPJQYAHCKJQC-UHFFFAOYSA-N 0.000 abstract 1
- HXQPUEQDBSPXTE-UHFFFAOYSA-N Diisobutylcarbinol Chemical compound CC(C)CC(O)CC(C)C HXQPUEQDBSPXTE-UHFFFAOYSA-N 0.000 abstract 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 abstract 1
- 150000004056 anthraquinones Chemical class 0.000 abstract 1
- 238000005984 hydrogenation reaction Methods 0.000 abstract 1
- 239000012442 inert solvent Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000010349 pulsation Effects 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/26—Filters with built-in pumps filters provided with a pump mounted in or on the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In an example, a 10 % wt solution of ethyl anthraquinone in a mixture of 40 parts by volume of benzene and 60 parts by volume of diisobutyl carbinol is hydrogenated at 30 DEG C. in the presence of a suspended hydrogenation catalyst such as Raney nickel or palladium on a carrier until 50% of the quinone has been reduced to the corresponding hydroquinone: some of the liquid is then withdrawn from the reaction zone through a filter positioned therein whilst a quantity of fresh solution equal to that removed is added. 50 alternating pulsations per minute are applied by means of a filter pump to the liquid being withdrawn in such manner that 1/3 of the liquid passing out of the reaction zone through the filter is returned therethrough, thus keeping the filter clear of suspended particles.ALSO:In conducting a reaction involving a liquid containing a suspended solid wherein some of the liquid is continuously withdrawn from the reaction zone through a filter positioned therein and fresh reactant liquid is continuously added to the reaction zone, an alternating pulsating movement of liquid through the filter is established at 1-500 pulses/minute, whereby a part of the liquid thus withdrawn is periodically returned to the reaction zone through the filter, which is thereby kept clear of solid particles. The suspended solid may be a catalyst used for hydrogenating a substituted anthraquinone in an inert solvent e.g. Raney-nickel or palladium on a carrier (see Group IV(b)). A number of embodiments is described and illustrated: for instance in Fig. 3 liquid <PICT:0856331/III/1> from the reactor 34 is withdrawn by pump 32 through filter 33 into line 35 containing valve 36 on the suction stroke. On the pressure stroke the liquid is expelled through line 37 containing valve 38 except when reducing valve 52 is periodically opened. A further valve may be installed in line 37 thus controlling the quantity of liquid returned through the filter. A stirrer 53 is preferably provided in the reactor. Preferably the particle size of the catalyst is 0.001-0.833 mm. and 20-70% of the filtered liquid is returned through the filter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE856331X | 1956-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB856331A true GB856331A (en) | 1960-12-14 |
Family
ID=6789302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33688/57A Expired GB856331A (en) | 1956-11-09 | 1957-10-29 | Process for conducting chemical reactions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB856331A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2168907A (en) * | 1984-12-20 | 1986-07-02 | British Petroleum Co Plc | Filtration |
| GB2269114A (en) * | 1992-07-31 | 1994-02-02 | Pall Corp | Recovering catalyst by filtration |
| US5628916A (en) * | 1994-08-17 | 1997-05-13 | Pall Corporation | Method for filtering edible oils |
-
1957
- 1957-10-29 GB GB33688/57A patent/GB856331A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2168907A (en) * | 1984-12-20 | 1986-07-02 | British Petroleum Co Plc | Filtration |
| GB2168907B (en) * | 1984-12-20 | 1989-04-12 | British Petroleum Co Plc | Separation process |
| GB2269114A (en) * | 1992-07-31 | 1994-02-02 | Pall Corp | Recovering catalyst by filtration |
| GB2269114B (en) * | 1992-07-31 | 1995-10-18 | Pall Corp | Method of removing catalyst |
| US5690836A (en) * | 1992-07-31 | 1997-11-25 | Pall Corporation | Method of removing catalyst |
| US5628916A (en) * | 1994-08-17 | 1997-05-13 | Pall Corporation | Method for filtering edible oils |
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