Solvent de-asphalting with cyclonic separation
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10G-027/00
C10C-003/00
C10L-007/00
C10G-021/00
C10G-067/04
출원번호
US-0250935
(2011-09-30)
등록번호
US-9150794
(2015-10-06)
발명자
/ 주소
Corscadden, Tom
Diduch, Greg
Hocking, Damien
Remesat, Darius
Kearns, Jim
출원인 / 주소
MEG ENERGY CORP.
대리인 / 주소
Bennett Jones LLP
인용정보
피인용 횟수 :
0인용 특허 :
56
초록▼
The present invention relates to a method of improving a heavy hydrocarbon, such as bitumen, to a lighter more fluid product and, more specifically, to a final hydrocarbon product that is refinery-ready and meets pipeline transport criteria without the addition of diluent. A solid asphaltene by-prod
The present invention relates to a method of improving a heavy hydrocarbon, such as bitumen, to a lighter more fluid product and, more specifically, to a final hydrocarbon product that is refinery-ready and meets pipeline transport criteria without the addition of diluent. A solid asphaltene by-product is created for easy handling and further processing. The invention is targeted to enhance Canadian bitumen, but has general application in improving any heavy hydrocarbon.
대표청구항▼
1. An improved continuous process for producing enhanced refinery feedstock and dry thermally-affected asphaltene solids from heavy hydrocarbon, said process comprising: (a) pre-heating the heavy hydrocarbon as a process fluid in a heater to a designed temperature;(b) moving the pre-heated process f
1. An improved continuous process for producing enhanced refinery feedstock and dry thermally-affected asphaltene solids from heavy hydrocarbon, said process comprising: (a) pre-heating the heavy hydrocarbon as a process fluid in a heater to a designed temperature;(b) moving the pre-heated process fluid to a reactor, and optimally converting asphaltenes in the process fluid within the reactor to produce a stream of thermally affected asphaltene-rich fraction(s), and a stream of non-condensable vapour and lighter liquid hydrocarbon(s);(c) deasphalting the thermally affected asphaltene-rich stream with a solvent extraction process into a stream of heavy deasphalted oil (DAO) and a second stream containing concentrated asphaltene;(d) separating dry thermally-affected asphaltene solids from the second stream in a separation unit, recovering the process solvent;(e) the refinery feedstock comprising of at least one of the produced streams;where the reactor is a single thermal conversion reactor with an overhead partial condenser operating within the following parameters:(a) a uniform heat flux of between 7000-12000 BTU/hr sqft introduced to the process fluid within the reactor;(b) a sweep gas of between 20-80 scf/bbl (gas/process fluid) is introduced within the reactor;(c) residence time of the process fluid within the reactor of between 40-180 minutes;(d) a substantially uniform operating temperature of between 675-775° F. in the reactor;(e) a near atmospheric operating pressure of <50 psig in the reactor. 2. The process of claim 1 where the solvent deasphalting performed at step c has an additional solvent extraction step using a liquid-liquid extraction column operating on the second stream of concentrated asphaltene leaving process step c. 3. The process of claim 1 where the sweep gas is nitrogen, steam, hydrogen and/or light hydrocarbon such as methane, ethane, propane. 4. The process of claim 1 where the sweep gas is preheated. 5. The process of claim 1 where the heat flux is delivered in the thermal reactor by one or more heating devices appropriately located to obtain substantially uniform in-reactor process fluid temperatures. 6. The process of claim 1 where a recycle stream of resin collected from the deasphalting process of step c is mixed with the feedstock upstream of the reactor to form the process fluid. 7. The process of claim 1 where the refinery feedstock comprises a blend of at least two of the produced streams to be pipeline ready, having an API of greater than 19 degrees gravity, and a viscosity less than 350 cSt at 8° C. 8. The process of claim 7 where one or more of the produced streams is treated to remove olefins. 9. The process of claim 1 where the refinery feedstock comprises one or more of the produced streams, suitable for diverse refinery types by virtue of its proportion of vacuum residue. 10. A process for producing pipeline-ready or refinery-ready feedstock and dry thermally-affected asphaltene solids from heavy hydrocarbons using a high-performance solvent extraction process with high local solvent-to-process fluid ratios yet maintaining low overall solvent-to-process fluid ratios, by first performing mild thermal cracking and then separating asphaltene-rich fractions from resulting thermally affected fluid so that the high solvent-to-oil ratio portion of the process acts only on those asphaltene-rich fractions. 11. The process of claim 1 with the step of pneumatically transporting and handling the resulting dry thermally-affected asphaltene solid. 12. The process of claim 7 where the processing of the heavy hydrocarbons to segregate asphaltene-rich fractions for extraction processing is done by including the heavy hydrocarbons in a process fluid, heating the process fluid to a desired temperature, moving the process fluid into a reactor, and managing at least one of temperature, in-reactor residence-time, heat flux, pressure and sweep gas in the reactor to produce the asphaltene-rich fractions for further processing. 13. The process of claim 12 where a resin stream is extracted with a solvent extraction process and mixed with the heavy hydrocarbons to form the process fluid. 14. The process of claim 12 where a substantially uniform temperature of the process fluid in the reactor is maintained between 675 and 775 degrees Fahrenheit. 15. The process of claim 12 where in-reactor residence time of the process fluid is between 40 and 180 minutes. 16. The process of claim 12 where a substantially uniform heat flux introduced to the process fluid in the reactor is between 7000 and 12,000 BTU/hr.sq.ft. 17. The process of claim 12 where a ratio of sweep gas to process fluid is between 20 and 80 scf/bbl. 18. The process of claim 12 where pressure on the process fluid in the reactor is less than 50 psig. 19. The process of claim 12 where the sweep gas is heated. 20. The process of claim 12 where the sweep gas is one or more of: nitrogen, steam, hydrogen or light hydrocarbon such as methane, ethane, or propane. 21. The process of claim 12 where the heat flux is delivered in the thermal reactor by one or more heating devices appropriately located to obtain substantially uniform in-reactor process fluid temperatures. 22. The process of claim 1 where pneumatic transport means are used to handle the dry thermally-affected asphaltene solids. 23. The process of claim 1, where the vapour-solid separation performed in step d can comprise of a settling chamber, baffle chamber, inertial separator or centrifugal collector which centrifugal collector can comprise of a single or multi-stage cyclone. 24. The process of claim 23, where transport gas is added to the concentrated asphaltene stream to enable and enhance pneumatic conveyance to the inertial separation unit. 25. The process of claim 23, where transport gas for pneumatic conveyance can be any suitable light molecular weight gas, including but not limited to natural gas, steam, or nitrogen. 26. The process of claim 1, where the integrated process is applied to an existing coker-based bitumen upgrader or refinery by accepting as feedstock the upgrader's or refinery's virgin or processed heavy hydrocarbon streams and providing light liquid hydrocarbon, and heavy deasphalted hydrocarbon process streams to the upgrader or refinery. 27. The process of claim 1, where the integrated process is applied to an existing residue hydrocracking upgrader or refinery by accepting as feedstock the upgrader's or refinery's virgin or processed heavy hydrocarbon streams and providing light liquid hydrocarbon, and heavy deasphalted hydrocarbon process stream to the upgrader or refinery. 28. The process of claim 1, where the integrated process is applied to a new bitumen upgrader in lieu of a coking process by accepting as feedstock the upgrader's heavy hydrocarbon streams and providing light liquid hydrocarbon, and heavy deasphalted hydrocarbon process streams to the upgrader. 29. The process of claim 1, where the integrated process is applied to a new or existing “sweet crude” refinery by accepting as feedstock the refinery's virgin or processed heavy hydrocarbon streams and providing light liquid hydrocarbon and heavy deasphalted hydrocarbon process streams to the refinery.
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이 특허에 인용된 특허 (56)
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