WO2015006317A1 - Use of methanol loop purge gas for adjustment of hydrogen to carbon monoxide ratio - Google Patents

Use of methanol loop purge gas for adjustment of hydrogen to carbon monoxide ratio Download PDF

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Publication number
WO2015006317A1
WO2015006317A1 PCT/US2014/045737 US2014045737W WO2015006317A1 WO 2015006317 A1 WO2015006317 A1 WO 2015006317A1 US 2014045737 W US2014045737 W US 2014045737W WO 2015006317 A1 WO2015006317 A1 WO 2015006317A1
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Prior art keywords
synthesis gas
derived product
gas derived
excess
stoichiometric ratio
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PCT/US2014/045737
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French (fr)
Inventor
Amit Patel
Gwo-Jang Abraham Liou
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Ihi E&C International Corporation
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Publication of WO2015006317A1 publication Critical patent/WO2015006317A1/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
    • C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
    • C07C29/1516—Multisteps
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • C01C1/0488—Processes integrated with preparations of other compounds, e.g. methanol, urea or with processes for power generation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/08—Production of synthetic natural gas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Definitions

  • the present invention relates to production of methanol and other synthesis gas derived products. Specifically, the present invention relates to the optimization of the stoichiometric ratio of the synthesis gas such that only a single shift section is required in the operation.
  • the present invention improves upon the production of synthesis gas derived products by producing a synthesis gas with a stoichiometric ratio to produce multiple synthesis gas derived products in a single facility.
  • a method for producing at least two synthesis gas derived products includes a step of selecting a stoichiometric ratio for synthesis gas above the ratio normally required for a first synthesis gas derived product and below the ratio normally required for a second synthesis gas derived product.
  • the method also includes a step of producing the first synthesis gas derived product and a step of directing excess synthesis gas product to production of the second synthesis gas derived product.
  • the method further includes a step of producing the second synthesis gas derived product.
  • the selecting step also includes selecting the stoichiometric ratio for synthesis gas below a ratio normally required for a third synthesis gas derived product.
  • the method further comprises steps of directing a portion of the excess synthesis gas product to production of a third synthesis gas derived product and producing the third synthesis gas.
  • the stoichiometric ratio for the synthesis gas is chosen such that the excess components also make up for a shortage of components needed for the production of the third synthesis gas derived product.
  • a system for producing at least two synthesis gas derived products includes a first shift section to produce a synthesis gas with a first stoichiometric ratio above a stoichiometric ratio required to produce a first synthesis gas derived product and below a stoichiometric ratio required to produce a second synthesis gas derived product.
  • the system also includes a first apparatus to produce the first synthesis gas derived product and a second apparatus to produce the second synthesis gas derived product.
  • the system further includes a first channel to direct excess synthesis gas components from the first apparatus to the second apparatus.
  • the first stoichiometric ratio produced by the first shift section is such that the excess synthesis gas components make up for a shortage of components needed to produce the second synthesis gas derived product.
  • the system includes a third apparatus to produce a third synthesis gas derived product and a second channel to direct a portion of the excess synthesis gas components to the third apparatus.
  • the first stoichiometric ratio produced by the first shift section is such that the excess synthesis gas components also make up for a shortage of components needed to produce the third synthesis gas component.
  • the second channel may direct the portion of excess synthesis gas components from the first channel to the third apparatus.
  • the first synthesis gas derived product is methanol
  • the second synthesis gas derived product is ammonia
  • the third synthesis gas derived product is synthetic natural gas.
  • FIG. 1 illustrates a block diagram of a system for producing multiple synthesis gas derived products from a single synthesis gas shift according to an embodiment of the present invention.
  • FIG. 2 illustrates a block diagram of a system for producing multiple synthesis gas derived products from a single synthesis gas shift according to another embodiment of the present invention.
  • Fig. 1 illustrates a block diagram 100 of a system for producing multiple synthesis gas derived products from a single synthesis gas shift according to an embodiment of the present invention.
  • the system depicted in block diagram 100 produces methanol and ammonia.
  • the system includes a shift section 102 for producing a synthesis gas.
  • the shift section 102 may be a catalyst bed.
  • the synthesis gas may be Rectisol or any other suitable synthesis gas, and contain hydrogen, carbon monoxide, carbon dioxide, water and other components.
  • the shift section 102 produces a synthesis gas with a stoichiometric ratio which is above the stoichiometric ratio required normally for the production of methanol and below the stoichiometric ratio required normally for the production of ammonia.
  • a channel 1400-4.0 directs the stream of synthesis gas from the shift section 102 to a split in which a methanol channel 4950-101 directs a portion of the synthesis gas stream to a methanol synthesis system 104 and a secondary products channel 1400-4.101 directs the remaining synthesis gas stream to the systems for producing any other synthesis gas derived products, such as ammonia or synthetic natural gas.
  • the methanol synthesis system 104 produces methanol which is directed to a methanol to gasoline system 106 by a channel 4950-503.
  • the methanol to gasoline system 106 may produce gasoline product and liquefied petroleum gasoline.
  • the methanol synthesis system 104 also produces excess synthesis gas components because the stoichiometric ratio of the synthesis gas is above the ratio required normally for production of methanol.
  • the synthesis gas may have excess hydrogen as well as an excess of other components, e.g., carbon monoxide and carbon dioxide.
  • a portion of the excess synthesis gas is directed to a channel 4950-112 that is combined with the secondary products channel 1400-4.101 to form a combined secondary products channel 1400-4.102.
  • the entirety of the stream of the combined secondary products channel 1400- 4.102 may be directed to the production of a single other synthesis gas derived product.
  • the entire steam from the combined secondary products channel 4950-4.102 may be directed to the production of ammonia.
  • the ammonia production channel 1400-4.104 directs the stream to the ammonia plant 110, which produces ammonia.
  • the stoichiometric ratio of the synthesis gas produced by the shift section 102 is chosen such that the excess components from the methanol synthesis system 104 make up for the shortage of components in the synthesis gas required to produce ammonia.
  • the system 100 may also include a pressure swing adsorption system 108 and an air separation unit 114.
  • a portion of the excess synthesis gas components from the methanol synthesis system may be directed to the pressure swing adsorption system 108 by a channel 4950-104.
  • the pressure swing adsorption system 108 produces hydrogen which may be directed to other units in the system 100.
  • the hydrogen may be directed to the methanol to gasoline system 106 and the ammonia plant 110 to assist in the production of gasoline product and ammonia.
  • the pressure swing adsorption system 108 may also produce a fuel export containing methane, hydrogen, carbon monoxide, carbon dioxide and other components.
  • the air separation unit 114 separates air into its primary components, such as nitrogen and oxygen. The nitrogen and oxygen may then be directed to other parts of the system 100, such as the ammonia plant 110 to assist in production of ammonia and the methanol synthesis system 104 to assist in production of methanol.
  • Table 1 details the composition of the stream (e.g., synthesis gas, ammonia, methanol, etc.) carried by the channels in system 100.
  • Table 1 details the composition of the stream (e.g., synthesis gas, ammonia, methanol, etc.) carried by the channels in system 100.
  • Fig. 2 illustrates a block diagram for a system 200 producing multiple synthesis gas derived products from a single synthesis gas shift according to another embodiment of the present invention.
  • a synthetic natural gas unit 1 12 is included to produce a sythentic natural gas.
  • the system 200 is the same as the system 100 described above except the combined secondary products channel 1400-4.102 delivers a portion of the synthesis gas to the synthetic natural gas unit 1 12 via a channel 1400-4.103.
  • the system 200 would direct the excess synthesis gas components to the secondary products channel 1400-4.101 to form a combined secondary products channel 1400-4.102, similar to system 100 described above.
  • the stoichiometric ratio of the synthesis gas produced by the shift section 102 is chosen such that the excess components from the methanol synthesis system 104 make up for the shortage of components in the synthesis gas required to produce ammonia and synthetic natural gas.
  • Table 2 details the composition of the product (e.g., synthesis gas, ammonia, methanol, etc.) carried by the channels in system 100.
  • product e.g., synthesis gas, ammonia, methanol, etc.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A system and method for producing at least two synthesis gas derived products in which a stoichiometric ratio for synthesis gas above the ratio normally required for a first synthesis gas derived product and below the ratio normally required for a second synthesis gas derived product is selected. The first synthesis gas derived product is produced, and the excess synthesis gas product is directed to production of the second synthesis gas derived product. The second synthesis gas derived product is then produced. The stoichiometric ratio for synthesis gas is chosen such that the excess components makes up for a shortage of components needed for the production of the second synthesis gas derived product.

Description

USE OF METHANOL LOOP PURGE GAS FOR ADJUSTMENT OF HYDROGEN TO CARBON MONOXIDE RATIO
BACKGROUND OF THE INVENTION
[0001] Field of the Invention
[0002] The present invention relates to production of methanol and other synthesis gas derived products. Specifically, the present invention relates to the optimization of the stoichiometric ratio of the synthesis gas such that only a single shift section is required in the operation.
[0003] Description of the Related Art
[0004] Gasification processes and many natural gas reforming processes produce a synthesis gas containing hydrogen, carbon monoxide, carbon dioxide and other components. This synthesis gas can be used to make methanol and other synthesis gas derived products, such as ammonia and synthetic natural gas. Each of these synthesis gas derived products has a different ideal stoichiometric ratio of the synthesis gas at which each respective product is produced.
[0005] The present invention improves upon the production of synthesis gas derived products by producing a synthesis gas with a stoichiometric ratio to produce multiple synthesis gas derived products in a single facility.
BRIEF SUMMARY OF THE INVENTION
[0006] According to one embodiment of the invention, a method for producing at least two synthesis gas derived products includes a step of selecting a stoichiometric ratio for synthesis gas above the ratio normally required for a first synthesis gas derived product and below the ratio normally required for a second synthesis gas derived product. The method also includes a step of producing the first synthesis gas derived product and a step of directing excess synthesis gas product to production of the second synthesis gas derived product. The method further includes a step of producing the second synthesis gas derived product. The
stoichiometric ratio for synthesis gas is chosen such that the excess components makes up for a shortage of components needed for the production of the second synthesis gas derived product. [0007] In another embodiment of the invention, the selecting step also includes selecting the stoichiometric ratio for synthesis gas below a ratio normally required for a third synthesis gas derived product. The method further comprises steps of directing a portion of the excess synthesis gas product to production of a third synthesis gas derived product and producing the third synthesis gas. The stoichiometric ratio for the synthesis gas is chosen such that the excess components also make up for a shortage of components needed for the production of the third synthesis gas derived product.
[0008] According to another embodiment of the present invention, a system for producing at least two synthesis gas derived products includes a first shift section to produce a synthesis gas with a first stoichiometric ratio above a stoichiometric ratio required to produce a first synthesis gas derived product and below a stoichiometric ratio required to produce a second synthesis gas derived product. The system also includes a first apparatus to produce the first synthesis gas derived product and a second apparatus to produce the second synthesis gas derived product. The system further includes a first channel to direct excess synthesis gas components from the first apparatus to the second apparatus. The first stoichiometric ratio produced by the first shift section is such that the excess synthesis gas components make up for a shortage of components needed to produce the second synthesis gas derived product.
[0009] In an embodiment of the present invention, the system includes a third apparatus to produce a third synthesis gas derived product and a second channel to direct a portion of the excess synthesis gas components to the third apparatus. The first stoichiometric ratio produced by the first shift section is such that the excess synthesis gas components also make up for a shortage of components needed to produce the third synthesis gas component. The second channel may direct the portion of excess synthesis gas components from the first channel to the third apparatus.
[0010] In an embodiment of the present invention, the first synthesis gas derived product is methanol, the second synthesis gas derived product is ammonia and the third synthesis gas derived product is synthetic natural gas.
[0011] The above and other aspects and embodiments are described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate various embodiments of the present invention and, together with the description, further serve to explain the principles of the invention and to enable a person skilled in the pertinent art to make and use the invention. In the drawings, like reference numbers indicate identical or functionally similar elements.
[0013] FIG. 1 illustrates a block diagram of a system for producing multiple synthesis gas derived products from a single synthesis gas shift according to an embodiment of the present invention.
[0014] FIG. 2 illustrates a block diagram of a system for producing multiple synthesis gas derived products from a single synthesis gas shift according to another embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0015] Fig. 1 illustrates a block diagram 100 of a system for producing multiple synthesis gas derived products from a single synthesis gas shift according to an embodiment of the present invention. The system depicted in block diagram 100 produces methanol and ammonia. The system includes a shift section 102 for producing a synthesis gas. The shift section 102 may be a catalyst bed. The synthesis gas may be Rectisol or any other suitable synthesis gas, and contain hydrogen, carbon monoxide, carbon dioxide, water and other components. The shift section 102 produces a synthesis gas with a stoichiometric ratio which is above the stoichiometric ratio required normally for the production of methanol and below the stoichiometric ratio required normally for the production of ammonia. A channel 1400-4.0 directs the stream of synthesis gas from the shift section 102 to a split in which a methanol channel 4950-101 directs a portion of the synthesis gas stream to a methanol synthesis system 104 and a secondary products channel 1400-4.101 directs the remaining synthesis gas stream to the systems for producing any other synthesis gas derived products, such as ammonia or synthetic natural gas. The methanol synthesis system 104 produces methanol which is directed to a methanol to gasoline system 106 by a channel 4950-503. The methanol to gasoline system 106 may produce gasoline product and liquefied petroleum gasoline. [0016] The methanol synthesis system 104 also produces excess synthesis gas components because the stoichiometric ratio of the synthesis gas is above the ratio required normally for production of methanol. For example, the synthesis gas may have excess hydrogen as well as an excess of other components, e.g., carbon monoxide and carbon dioxide. A portion of the excess synthesis gas is directed to a channel 4950-112 that is combined with the secondary products channel 1400-4.101 to form a combined secondary products channel 1400-4.102. As shown in Fig. 1, the entirety of the stream of the combined secondary products channel 1400- 4.102 may be directed to the production of a single other synthesis gas derived product. For example, the entire steam from the combined secondary products channel 4950-4.102 may be directed to the production of ammonia. The ammonia production channel 1400-4.104 directs the stream to the ammonia plant 110, which produces ammonia. In this embodiment, the stoichiometric ratio of the synthesis gas produced by the shift section 102 is chosen such that the excess components from the methanol synthesis system 104 make up for the shortage of components in the synthesis gas required to produce ammonia.
[0017] The system 100 may also include a pressure swing adsorption system 108 and an air separation unit 114. A portion of the excess synthesis gas components from the methanol synthesis system may be directed to the pressure swing adsorption system 108 by a channel 4950-104. The pressure swing adsorption system 108 produces hydrogen which may be directed to other units in the system 100. For example, the hydrogen may be directed to the methanol to gasoline system 106 and the ammonia plant 110 to assist in the production of gasoline product and ammonia. The pressure swing adsorption system 108 may also produce a fuel export containing methane, hydrogen, carbon monoxide, carbon dioxide and other components. The air separation unit 114 separates air into its primary components, such as nitrogen and oxygen. The nitrogen and oxygen may then be directed to other parts of the system 100, such as the ammonia plant 110 to assist in production of ammonia and the methanol synthesis system 104 to assist in production of methanol.
[0018] Table 1, below, details the composition of the stream (e.g., synthesis gas, ammonia, methanol, etc.) carried by the channels in system 100. Table 1
Figure imgf000006_0001
Table 1 cont.
Figure imgf000007_0001
Table 1 cont.
Figure imgf000008_0001
[0019] Fig. 2 illustrates a block diagram for a system 200 producing multiple synthesis gas derived products from a single synthesis gas shift according to another embodiment of the present invention. In system 200, a synthetic natural gas unit 1 12 is included to produce a sythentic natural gas. The system 200 is the same as the system 100 described above except the combined secondary products channel 1400-4.102 delivers a portion of the synthesis gas to the synthetic natural gas unit 1 12 via a channel 1400-4.103. The system 200 would direct the excess synthesis gas components to the secondary products channel 1400-4.101 to form a combined secondary products channel 1400-4.102, similar to system 100 described above. In this embodiment, the stoichiometric ratio of the synthesis gas produced by the shift section 102 is chosen such that the excess components from the methanol synthesis system 104 make up for the shortage of components in the synthesis gas required to produce ammonia and synthetic natural gas.
[0020] Table 2, below, details the composition of the product (e.g., synthesis gas, ammonia, methanol, etc.) carried by the channels in system 100.
Table 2
Figure imgf000010_0001
Table 2 cont.
Stream Name 4950-101 4950-102 4950 103 4950-112 4350-104 4950-105 4950-108
HYiSSOSSX
Stream DgscrspSkm t TOROSEN HTOSOGSN
FROM TO EUf TO WST
P MT TO SHS + NH3
5S.4S% 5943% 59.49% 4.77% 8.80% 59.49%
Tsmpsratee f'Fj 75 m 149 149 149 149 288
Pressure [osisi] 394 394 394 394 394 360 81
Phsse VAPOR VAPOR VAPOR VAPOR VAPOR VAPO VAPOR
Molar Ftew [tom8¾¾j 29,910.82 10,158.32 6,004.07 3.820.89 333.37 0.00 203.79
Mass Row JST h] 160 6 34,8 20 0 128 1.1 0.0 0.2
Vapsf Flow [ Mscf ] it.35 3.85 2.28 1.4S 0.13 0,00 008
Me! Weight 10.74 8.89 S.S9 S.69 6.S9 2.04 2.04
Composition i«ts3%)
Watesr - 0.24 0.24 024 0,24 - -
Hydrogen 58.70 81.19 81.19 81.1S 81.13 99.84 99.94
Carbon erwsfje 22.30 3.78 3.78 3.78 3,78 - - eastern DiOJtitSe 0.S6 4.0? 4.07 4.07 4,8? - -
Nitrogen 8.08 0,50 0.S8 o.se 0 50 0.01 0.01
0.20 1.S7 1,5? 1.57 1.5? 0.04 0.84
Methane 17.96 8 04 8.64 8 64 8 84 -
Ethane 0.11 0,02 0.02 0.02 002 - -
Methar»l - - - - - -
Lights - - - - - - -
Heavies - - - - - - -
Oxygen - - - - -
F8s¾v Rate, !iHSCtei f
Water - 24.38 14.41 9.17 0,843 - -
Hydrogen 17,555.78 9,248.72 4.874.22 3,101.87 270,63 0.00 203 S§
Carbon McncKide 8,669.40 383.95 226 93 144.42 1260 -
Carbon DSosde 197.39 413.4S 244 34 155.49 13.57 - - f-iiroQen 23 93 5079 30.02 19,10 1.87 000 0.02
Afgsss 53.82 159.47 94.25 59 88 5.23 0.00 0,08 etrtsne 5,371 41 877.59 518.70 338.88 28.80 - -
Ethane 32.90 2.83 1.20 0,78 0.07 - -
MetssrtS; - - - - - - -
LsgWs - - - - - - -
Heavies - - - - - - -
Oxygen - - - - - - -
Table 2 cont.
Figure imgf000012_0001
[0021] While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments.

Claims

What is claimed is:
1. A method for producing at least two synthesis gas derived products comprising the steps of:
selecting a stoichiometric ratio for synthesis gas above a ratio normally required for a first synthesis gas derived product and below a ratio normally required for a second synthesis gas derived product;
producing the first synthesis gas derived product;
directing excess synthesis gas product from the production of the first synthesis gas derived product to production of the second synthesis gas derived product; and
producing the second synthesis gas derived product,
wherein the stoichiometric ratio for the synthesis gas is chosen such that the excess components make up for a shortage of components needed for the production of the second synthesis gas derived product.
2. The method of claim 1 , wherein the synthesis gas includes at least hydrogen, carbon monoxide and carbon dioxide, and the stoichiometric ratio for the synthesis gas is chosen such that there is excess hydrogen.
3. The method of claim 1, wherein the first synthesis gas derived product is methanol and the second synthesis gas derived product is ammonia.
4. The method of claim 1 , wherein the selecting step also includes selecting a stoichiometric ratio for synthesis gas below a ratio normally required for a third synthesis gas derived product; the method further comprising the steps of:
directing a portion of the excess synthesis gas product to production of a third synthesis gas derived product; and
producing the third synthesis gas derived product,
wherein the stoichiometric ratio for the synthesis gas is chosen such that the excess components also make up for a shortage of components needed for the production of the third synthesis gas derived product.
5. A system for producing at least two synthesis gas derived products, comprising: a first shift section to produce a synthesis gas with a first stoichiometric ratio above a stoichiometric ratio required to produce a first synthesis gas derived product and below a stoichiometric ratio required to produce a second synthesis gas derived product;
a first apparatus to produce the first synthesis gas derived product;
a second apparatus to produce the second synthesis gas derived product; and
a first channel to direct excess synthesis gas components from the first apparatus to the second apparatus,
wherein the first stoichiometric ratio produced by the first shift section is such that the excess synthesis gas components make up for a shortage of components needed to produce the second synthesis gas derived product.
6. The system of claim 5, further comprising:
a third apparatus to produce a third synthesis gas derived product; and
a second channel to direct a portion of the excess synthesis gas components to the third apparatus,
wherein the first stoichiometric ratio produced by the first shift section is such that the excess synthesis gas components also make up for a shortage of components needed to produce the third synthesis gas component.
7. The system of claim 6, wherein the first synthesis gas derived product is methanol, the second synthesis gas derived product is ammonia and the third synthesis gas derived product is synthetic natural gas.
8. The system of claim 6, wherein the second channel directs the portion of excess synthesis gas components from the first channel to the third apparatus.
9. The system of claim 5, wherein the first synthesis gas derived product is methanol.
10. The system of claim 5, wherein the second synthesis gas derived product is ammonia.
11. The system of claim 5, wherein the second synthesis gas derived product is synthetic natural gas.
PCT/US2014/045737 2013-07-08 2014-07-08 Use of methanol loop purge gas for adjustment of hydrogen to carbon monoxide ratio WO2015006317A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070129450A1 (en) * 2005-11-18 2007-06-07 Barnicki Scott D Process for producing variable syngas compositions
US20120148472A1 (en) * 2009-08-20 2012-06-14 Saudi Basic Industries Corporation Process for methanol and ammonia co-production
US8303923B2 (en) * 2008-11-28 2012-11-06 Haldor Topsoe A/S Co-production of methanol and ammonia

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070129450A1 (en) * 2005-11-18 2007-06-07 Barnicki Scott D Process for producing variable syngas compositions
US8303923B2 (en) * 2008-11-28 2012-11-06 Haldor Topsoe A/S Co-production of methanol and ammonia
US20120148472A1 (en) * 2009-08-20 2012-06-14 Saudi Basic Industries Corporation Process for methanol and ammonia co-production

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