Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
405 words
IN A PROCESS OF PREPARING DESULFURIZED LIGHT OIL AND FUEL GAS FROM HEAVY OIL BY USING AN ALKALI METAL CARBONATE COMPOUND, THE IMPROVEMENT COMPRISING THE STEPS OF CONVERTING RAW MATERIAL HEAVY OIL IN A LOW TEMPERATURE COKING REACTOR OPERATING AT A TEMPERATURE OF FROM 470* TO 550*C AND INCLUDING A FLUIDIZED BED CONTAINING PARTICLES OF AN ALKALI METAL CARBONATE COMPOUND INTO PARTICLES OF CARBONACEOUS RESIDUE CONTAINING DESULFURIZED DECOMPOSITION GAS, DESULFURIZED LIGHT OIL, PARTICLES OF SAID ALKALI METAL CARBONATE COMPOUND AND AN APPRECIABLE QUANTITY OF VOLATILE COMPONENTS, SIMULTANEOUSLY FIXING A PORTION OF THE SULFUR CONTAINED IN SAID RAW MATERIAL HEAVY OIL TO FORM AN ALKALI METAL SULFIDE BY THE ACTION OF SAID ALKALI METAL CARBONATE COMPOUND TO RECOVER SAID DESULFURIZED DECOMPOSITION GAS AND SAID DESULFURIZED LIGHT OIL FROM SAID LOW TEMPERATURE COKING REACTOR, TRANSFERRING SAID PARTICLES OF CARBONACEOUS SUBSTANCE RESIDUE CONTAINING SAID ALKALI METAL CARBONATE COMPOUND FROM SAID LOW TEMPERATURE COKING REACTOR INTO HIGH TEMPERATURE COKING REACTOR INCLUDING A HIGH TEMPERATURE FLUIDIZED BED, TREATING AT AN ELEVATED TEMPERATURE SAID CARBONACEOUS SUBSTANCE RESIDUE IN SAID HIGH TEMPERATURE FLUIDIZED BED OPERAING AT A TEMPERATURE OF FROM 550* TO 700* C. FORMING COKE PARTICLES CONTAINING SAID ALKALI METAL CARBONATE COMPOUND AND DESULFURIZED LIGHT SUBSTANCE, ADMITTING SAID DESULFURIZED LIGHT SUBSTANCE INTO SAID LOW TEMPERATURE COKING REACTOR TO RECOVER DESULFURIZED GAS AND DESULFURIZED LIGHT OIL, TRANSFERRING SAID COKE PARTICLES INTO AN ALKALI METAL SULFIDE REGENERATION REACTOR FROM SAID HIGH TEMPERATURE COKING REACTOR, CONTACTING SAID COKE PARTICLES IN A HIGH REGENERATION BED OPERATING AT A TEMPERATURE OF FROM 600* TO 800*C WITH HIGH TEMPERATURE FUEL GAS TRANSFERRED FROM A HEATING AND GRATIFYING REACTOR THEREBY CONVERTING SAID ALKALI METAL SULFIDE COMPOUND WHICH HAS FIXED THE SULFUR IN THE RAW MATERIAL HEAVY OIL CONTAINED IN SAID COKE PARTICLES INTO THE ALKALI METAL CARBONATE COMPOUND THUS RELEASING THE FIXED SULFUR AS HYDROGEN SULFIDE, RECOVERING HYDROGEN SULFIDE CONTAINING FUEL GAS FROM SAID AKLALI METAL SULFIDE REGENARATION REACTOR, TRANSFERRING SAID COKE PARTICLES INTO A HEATING AND GRASIFYING REACTOR PROVIDED WITH A GRASIFYING FLUIDIZED BED, CONVERTING MOST OF THE COKE IN THE COKE PARTICLLES INTO HEATED FUEL GAS IN SAID GRASIFYING FLUID IZED BED OPERATING AT A TEMPERATURE OF FROM 700* TO 1,000*C, TRANSFERRING SAID FUEL GAS INTO SID ALKALI METAL SULFIE REGENERATION REACTOR THHUS RECOVERING SID FUEL GAS AS HYDROGEN SULFIDE CONTAINING FUEL GAS, AND RECIRCULATING THE ALKALI METAL CRBONATE CONTAINING PARTICLES FROM WHICH MOST OF THE COKE HAS BEEN REMOVED THROUGH SI HIGH TEMPERATURE COKING REACTOR.
Claim 2
Dependent Claim
405 words
IN A PROCESS OF PREPARING DESULFURIZED LIGHT OIL AND FUEL GAS FROM HEAVY OIL BY USING AN ALKALI METAL CARBONATE COMPOUND, THE IMPROVEMENT COMPRISING THE STEPS OF CONVERTING RAW MATERIAL HEAVY OIL IN A LOW TEMPERATURE COKING REACTOR OPERATING AT A TEMPERATURE OF FROM 470* TO 550*C AND INCLUDING A FLUIDIZED BED CONTAINING PARTICLES OF AN ALKALI METAL CARBONATE COMPOUND INTO PARTICLES OF CARBONACEOUS RESIDUE CONTAINING DESULFURIZED DECOMPOSITION GAS, DESULFURIZED LIGHT OIL, PARTICLES OF SAID ALKALI METAL CARBONATE COMPOUND AND AN APPRECIABLE QUANTITY OF VOLATILE COMPONENTS, SIMULTANEOUSLY FIXING A PORTION OF THE SULFUR CONTAINED IN SAID RAW MATERIAL HEAVY OIL TO FORM AN ALKALI METAL SULFIDE BY THE ACTION OF SAID ALKALI METAL CARBONATE COMPOUND TO RECOVER SAID DESULFURIZED DECOMPOSITION GAS AND SAID DESULFURIZED LIGHT OIL FROM SAID LOW TEMPERATURE COKING REACTOR, TRANSFERRING SAID PARTICLES OF CARBONACEOUS SUBSTANCE RESIDUE CONTAINING SAID ALKALI METAL CARBONATE COMPOUND FROM SAID LOW TEMPERATURE COKING REACTOR INTO HIGH TEMPERATURE COKING REACTOR INCLUDING A HIGH TEMPERATURE FLUIDIZED BED, TREATING AT AN ELEVATED TEMPERATURE SAID CARBONACEOUS SUBSTANCE RESIDUE IN SAID HIGH TEMPERATURE FLUIDIZED BED OPERAING AT A TEMPERATURE OF FROM 550* TO 700* C. FORMING COKE PARTICLES CONTAINING SAID ALKALI METAL CARBONATE COMPOUND AND DESULFURIZED LIGHT SUBSTANCE, ADMITTING SAID DESULFURIZED LIGHT SUBSTANCE INTO SAID LOW TEMPERATURE COKING REACTOR TO RECOVER DESULFURIZED GAS AND DESULFURIZED LIGHT OIL, TRANSFERRING SAID COKE PARTICLES INTO AN ALKALI METAL SULFIDE REGENERATION REACTOR FROM SAID HIGH TEMPERATURE COKING REACTOR, CONTACTING SAID COKE PARTICLES IN A HIGH REGENERATION BED OPERATING AT A TEMPERATURE OF FROM 600* TO 800*C WITH HIGH TEMPERATURE FUEL GAS TRANSFERRED FROM A HEATING AND GRATIFYING REACTOR THEREBY CONVERTING SAID ALKALI METAL SULFIDE COMPOUND WHICH HAS FIXED THE SULFUR IN THE RAW MATERIAL HEAVY OIL CONTAINED IN SAID COKE PARTICLES INTO THE ALKALI METAL CARBONATE COMPOUND THUS RELEASING THE FIXED SULFUR AS HYDROGEN SULFIDE, RECOVERING HYDROGEN SULFIDE CONTAINING FUEL GAS FROM SAID AKLALI METAL SULFIDE REGENARATION REACTOR, TRANSFERRING SAID COKE PARTICLES INTO A HEATING AND GRASIFYING REACTOR PROVIDED WITH A GRASIFYING FLUIDIZED BED, CONVERTING MOST OF THE COKE IN THE COKE PARTICLLES INTO HEATED FUEL GAS IN SAID GRASIFYING FLUID IZED BED OPERATING AT A TEMPERATURE OF FROM 700* TO 1,000*C, TRANSFERRING SAID FUEL GAS INTO SID ALKALI METAL SULFIE REGENERATION REACTOR THHUS RECOVERING SID FUEL GAS AS HYDROGEN SULFIDE CONTAINING FUEL GAS, AND RECIRCULATING THE ALKALI METAL CRBONATE CONTAINING PARTICLES FROM WHICH MOST OF THE COKE HAS BEEN REMOVED THROUGH SI HIGH TEMPERATURE COKING REACTOR.
Claim 3
Dependent Claim
116 words
The process according to claim 1, said process comprising the steps of transferring small particles to the upper layer of respective reactors and large particles to the classifying section of the reactors by utilizing the classifying function of the fluidized bed, transferring by gravity large particles collected at the classifying section in the upper reactor into the lower reactor and transferring small particles collected in the upper layer of the lower reactor into the upper reactor by the vapour phase formed between the low temperature coking reactor and the high temperature coking reactor and between the alkali metal sulfide regeneration reactor and the heating and gasifying reactor thereby supplying necessary quantities of the particles and heat.
Claim 4
Dependent Claim
62 words
The process according to claim 1 wherein a portion of the raw material heavy oil is supplied into the low temperature coking reactor through a nozzle on the head thereof, and a portion of the raw material heavy oil is supplied through a nozzle on the side wall of said reactor thus improving the dispersion of the heavy oil through the particles.
Claim 5
Dependent Claim
43 words
The process according to claim 1 wherein in the upper portion of the low temperature coking reactor are provided a steam admission region, a decomposition gas oil spray region, and a deceleration chamber thus effecting cooling and washing of the desulfurized decomposition products.