Process and system for the production of substitute pipeline gas
阅读：529发布：2021-05-29
专利汇可以提供Process and system for the production of substitute pipeline gas专利检索，专利查询，专利分析的服务。并且Process and system for producing substitute pipeline gas (SPG) from crude oil. The process includes separation of the crude oil into several fractions, catalytic gasification of the crude oil fraction boiling below about 375*F., pyrolysis treatment of the middle distillate of the crude oil, blending of the catalytically gasified product and the C3''s and lighter product produced by the pyrolysis treatment, and the production of fuel oil from the heavy high boiling fraction of the crude oil feed. A selfcontained hydrogen generation plant is included for hydrotreatment within the system.，下面是Process and system for the production of substitute pipeline gas专利的具体信息内容。
2. A process for producing a fuel gas product from crude oil comprising: separating from the crude oil feed a first distillate fraction boiling below about 375*F.; separating from the crude oil feed a second distillate fraction boiling between 375*F. and 650*F.; gasifying the first distillate fraction to obtain a product gas; cracking by steam hydrocarbon pyrolysis the second distillate fraction in a pyrolysis furnace to produce a pyrolysis cracked furnace effluent; separating the pyrolysis cracked furnace effluent into a stream containing C3''s, lower hydrocarbons and hydrogen, and streams containing other products; blending the stream containing the C3''s, lower hydrocarbons and hydrogen with the product gas produced in the gasification step to produce a fuel gas containing olefins; delivering a portion of the first distillate fraction to a hydrogen plant; generating hydrogen in the hydrogen plant; delivering hydrogen from the hydrogen plant to an atmospheric residuum desulphurization plant; delivering the bottoms of the crude oil feed, which is atmospheric residuum remaining in the crude oil feed after removal of the first and second distillate fractions to the atmospheric residuum desulphurization plant; and removing the sulfur from the bottoms.
3. A process as in claim 1 further comprising the steps of separating the other products from the furnace effluent into a first fraction of C4''s, a second fraction of pyrolysis gasoline and a third fraction of pyrolysis fuel oil.
4. A process as in claim 3 further comprising the steps of: delivering a portion of the first distillate fraction to a hydrogen plant; generating hydrogen in the hydrogen plant; delivering a portion of the hydrogen from the hydrogen plant to a pyrolysis gasoline hydrotreater; delivering the pyrolysis gasoline to the pyrolysis gasoline hydrotreater; and removing the olefins from the pyrolysis gasoline in the pyrolysis gasoline hydrotreater.
5. A process as in claim 4 further comprising the steps of: producing an aromatics extract containing benzene, tolulene and xylenes from the hydrotreated pyrolysis gasoline; and returning the unextracted constituents of the hydrogenated pyrolysis gasoline to the gasification plant.
6. A process as in claim 3 further comprising the steps of: mixing the first fraction of C4''s and a portion of the stream containing C3''s and lower hydrocarbons to form a mixture; and delivering the mixture of C4''s and C3''s and lower hydrocarbons to the pyrolysis furnace for fuel.
7. A process as in claim 5 further comprising the steps of: mixing the first fraction of C4''s and a portion of the stream containing C3''s and lower hydrocarbons to form a mixture; and delivering the mixture of C4''s and C3''s and lower hydrocarbons to the pyrolysis furnace for fuel.
8. A process as in claim 1 wherein the gasification of the first distillate fraction is catalytic gasification.
9. A process as in claim 8 wherein the catalytic gasification is performed by delivering steam to a catalytic gasification vessel and passing the steam and first distillate fraction over a nickel-based catalyst at about 900*F. and about 500 psig.
10. A process as in claim 9 further comprising the steps of removing carbon dioxide and residual steam from the gas produced in the catalytic gasification vessel.
11. A process as in claim 1 further comprising the steps of: delivering a portion of the first distillate fraction to a hydrogen plant; generating hydrogen in the hydrogen plant; and mixing hydrogen from the hydrogen plant with the stream containing C3''s and lower hydrocarbons and with the gas produced in the gasification plant.
12. A process as in claim 7 further comprising the step of mixing hydrogen from the hydrogen plant with the stream containing C3''s and lower hydrocarbons and with the gas produced in the gasification plant.
13. A process as in claim 12 further comprising the steps of: delivering hydrogen from the hydrogen plant to an atmospheric residuum desulphurization plant; delivering the bottoms of the crude oil feed which is atmospheric residuum remaining in the crude oil feed after removal of the first and second distillate fractions to the atmospheric residuum desulphurizatioN plant; and removing the sulfur from the bottoms.
14. A process as in claim 12 wherein the gasification of the first distillate fraction is catalytic gasification.
15. A process as in claim 14 wherein the product gas from the catalytic gasification step has a heating value between 700-800 B.T.U./S.C.F. and the stream containing C3''s and lighter hydrocarbons from the pyrolysis effluent has a heating value of 1300-1400 B.T.U./S.C.F.
16. A process as in claim 1 further comprising the step of: delivering a portion of the first distillate fraction to a hydrogen plant; generating hydrogen in the hydrogen plant; delivering hydrogen from the hydrogen plant to a desulfurization removal plant; and removing sulfur from the first distillate fraction in the desulfurization removal plant prior to gasifying the first distillate fraction.
17. The process of claim 1 wherein separation of the first and second fractions from the crude oil feed is performed by atmospheric distillation.
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