US20020004533A1
Expired / Lapsed
US
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Integration of shift reactors and hydrotreaters
Assignee: Texaco Development Corp
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Filing: 2001-01-31
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Granted: —
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Expires: 2021-01-31
Abstract
Abstract In this invention, a hydrogen recycle stream from a hydrotreater is heated before returning to the hydrotreater using the energy from a first shift reaction, thereby eliminating the need for a fired heater to heat the hydrogen recycle stream. This heat integration significantly reduces the overall capital and operating costs as well as emissions for the refinery because no fired heater is needed for the hydrotreater and no boiler is needed to cool the effluent from the first stage of shift.
Inventors
- 👤 Paul Wallace
- 👤 Kay Johnson
- 👤 Cynthia Caputo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:04
CPC Classifications
C; C10; C10G; C10G2/00; C10G2/30; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; C01B3/32; C01B3/34; C01B3/48; C10G49/00; C10G49/007; C10K; C10K3/00; C10K3/02; C10K3/04; C01B2203/00; C01B2203/02; C01B2203/025; C01B2203/0283; C01B2203/0288; C01B2203/04; C01B2203/0405; C01B2203/0415; C01B2203/0435; C01B2203/0445; C01B2203/045; C01B2203/0465; C01B2203/047; C01B2203/0475; C01B2203/0485; C01B2203/0495; C01B2203/06; C01B2203/063; C01B2203/065; C01B2203/08; C01B2203/0805; C01B2203/0838; C01B2203/0844; C01B2203/0872; C01B2203/0877; C01B2203/0883; C01B2203/12; C01B2203/1205; C01B2203/1258; C01B2203/14; C01B2203/146; C01B2203/147; C01B2203/80; C01B2203/84
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
39 words
1 . An process for integrating hydrotreating reactors and syngas shift reactors comprising exchanging heat between at least a portion of a recycle stream of hydrogen from a hydrotreating reactor and an outlet stream of a syngas shift reactor.
Claim 2
Dependent Claim
39 words
1 . An process for integrating hydrotreating reactors and syngas shift reactors comprising exchanging heat between at least a portion of a recycle stream of hydrogen from a hydrotreating reactor and an outlet stream of a syngas shift reactor.
Claim 3
Dependent Claim
31 words
2 . The process of claim 1 , wherein the recycle stream of hydrogen is heated to a sufficient temperature to provide reaction initiation energy for processing in the hydrotreating reactor.
Claim 4
Dependent Claim
40 words
3 . The process of claim 1 , wherein the recycle stream of hydrogen contains sulfur compounds, and prior to exchanging heat with the outlet stream of the shift reactor the sulfur is removed from the recycle stream of hydrogen.
Claim 5
Dependent Claim
34 words
4 . The process of claim 1 , further comprising a gasification reactor integrated with the hydrotreating reactors and the shift reactors, wherein the gasification reactor produces the hydrogen feed stream to the hydrotreater.
Claim 6
Dependent Claim
53 words
5 . The process of claim 4 , further comprising treating a synthesis gas product from the gasification reactor so as to remove any sulfur compounds in the synthesis gas, processing the synthesis gas in the shift, purifying the synthesis gas to produce a hydrogen stream, and feeding hydrogen stream to the hydrotreater.
Claim 7
Dependent Claim
28 words
6 . The process of claim 5 , wherein the by-products of the synthesis gas purification step are processed in a combustion turbine so as to produce power.
Claim 8
Dependent Claim
18 words
7 . The process of claim 5 , wherein the hydrogen stream is at least 90% pure hydrogen.
Claim 9
Dependent Claim
18 words
8 . The process of claim 7 , wherein the hydrogen stream is at least 95% pure hydrogen.
Claim 10
Dependent Claim
56 words
9 . The process of claim 4 , further comprising processing a synthesis gas product from the gasification reactor in the shift reactors, treating the synthesis gas so as to remove any sulfur compounds in the synthesis gas, purifying synthesis gas to produce at least a hydrogen stream, and feeding the hydrogen stream to the hydrotreater.
Claim 11
Dependent Claim
28 words
10 . The process of claim 9 , wherein the by-products of the synthesis gas purification step are processed in a combustion turbine so as to produce power.
Claim 12
Dependent Claim
18 words
11 . The process of claim 9 , wherein the hydrogen stream is at least 90% pure hydrogen.
Claim 13
Dependent Claim
18 words
12 . The process of claim 11 , wherein the hydrogen stream is at least 95% pure hydrogen.
Claim 14
Dependent Claim
122 words
13 . A hydrotreating process comprising: gasifying hydrocarbonaceous materials in a gasification reactor to produce synthesis gas; processing the synthesis gas in a first shift reactor; contacting the synthesis gas with a solvent in an acid gas removal contactor, producing a hydrogen stream and an acid gas stream; reacting the hydrogen stream in a methanation reactor, producing a substantially pure hydrogen stream; feeding the substantially pure hydrogen stream to a hydrotreating reactor, forming a sour hydrogen recycle stream; purifying the sour hydrogen recycle stream, forming a sweet hydrogen recycle stream; exchanging heat between at least a portion of the sweet hydrogen recycle stream and the outlet stream of the first shift reactor; returning the sweet hydrogen recycle stream to the hydrotreating reactor.
Claim 15
Dependent Claim
122 words
13 . A hydrotreating process comprising: gasifying hydrocarbonaceous materials in a gasification reactor to produce synthesis gas; processing the synthesis gas in a first shift reactor; contacting the synthesis gas with a solvent in an acid gas removal contactor, producing a hydrogen stream and an acid gas stream; reacting the hydrogen stream in a methanation reactor, producing a substantially pure hydrogen stream; feeding the substantially pure hydrogen stream to a hydrotreating reactor, forming a sour hydrogen recycle stream; purifying the sour hydrogen recycle stream, forming a sweet hydrogen recycle stream; exchanging heat between at least a portion of the sweet hydrogen recycle stream and the outlet stream of the first shift reactor; returning the sweet hydrogen recycle stream to the hydrotreating reactor.
Claim 16
Dependent Claim
25 words
14 . The process of claim 13 , further comprising desulfurizing the synthesis gas prior to processing the synthesis gas in the first shift reactor.
Claim 17
Dependent Claim
20 words
15 . The process of claim 13 , wherein the synthesis gas is processed in a plurality of shift reactors.
Claim 18
Dependent Claim
38 words
16 . The process of claim 15 , wherein the outlet from the last of the plurality of shift reactors exchanges heat with the hydrogen stream and the acid gas stream products of the acid gas removal contactor.
Claim 19
Dependent Claim
24 words
17 . The process of claim 13 , further comprising desulfurizing the synthesis gas after processing the synthesis gas in the first shift reactor.
Claim 20
Dependent Claim
28 words
18 . The process of claim 13 wherein the acid gas stream products of the acid gas removal contactor are burned in a combustion turbine to produce power.
References Cited (Backward Citations)
No citation records indexed.
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