http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1182180-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_802cb425a297a0766bc7d8cdc2f03898 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S208-01 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G11-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G11-187 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J38-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10G11-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J38-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J38-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G05D21-00 |
| filingDate | 1967-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1970-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1182180-A |
| titleOfInvention | Controlling the Regeneration of Catalyst in a Fluid Catalytic Cracking System. |
| abstract | 1,182,180. Automatic control. TEXACO DEVELOPMENT CORP. June 15, 1967 [June 27, 1966], No.27619/67. Heading G3R. In a system for regenerating catalyst in catalytic cracking, combustion air flow to a dense bed of the material is automatically controlled to maintain a temperature differential, dependent on the temperature of the dense bed, between the dense bed and a zone above it in which afterburning takes place. In Fig. 1, hydrocarbon from a supply 34 is maintained at a constant rate of flow by automatic control of a valve 36, raised to a constant temperature by a pre-heater 42 having an automatically controlled fuel valve 46, and supplied through a conduit 24 to a catalytic cracking reactor 12. The level of a fluidized bed 14 within the reactor is regulated by automatic control of a valve 58 in a conduit 56 through which spent, carbonized, catalyst is fed to a regenerator 16. The spent catalyst is entrained by a constant flow of air supplied from an automatically controlled turbinedriven compressor 62. Automatically controlled flows of combustion air and water are supplied to a fluidized bed 18 within the regenerator through conduits 98, 92 so that the carbon is burnt off the catalyst. Further burning of CO occurs in the space above bed 18 and an automatically controlled flow of mixed steam and water is supplied through a conduit 78 and cyclone 70 to cool this space. Pressure within the regenerator is maintained constant by automatic control of a valve 76 in flue gas conduit 72. Regenerated catalyst is withdrawn through a conduit 20 and added to the hydrocarbon supply to the reactor in conduit 24. The temperature of the mixture is regulated by automatic control of a valve 22 in conduit 20. Products from reactor 12 pass in vapour form through a conduit 23 to a fractionator 25 which produces a vapour stream at 27, a gas-oil product at 29, and a residium product at 35. A gas-oil product is also recycled to the input of the reactor by a pump 33, flow in the return conduit being maintained constant by automatic control of a valve 55. Detectors 110, 114 responsive to bed and overhead temperatures in the regenerator supply signals to a digital or analogue computer 32 which compares the temperature difference with a predetermined temperature difference and corrects any error by controlling, through a pneumatic regulator 111, the rate of flow of combustion air to the regenerator. The predetermined difference is, however, automatically adjusted within the computer according to specified functions of temperatures, rates of flow and other factors, signals corresponding to which are either supplied to the computer from detectors through the lines shown broken in Fig. 1, or are programmed into the computer. |
| priorityDate | 1966-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.