MLchartDataset catalogue

Patent · US10131593B2 · B2 · US

Systems and methods for producing hydrogen from a hydrocarbon and using the produced hydrogen in a hydrogenation reaction

(11) Publication number
US10131593B2
(21) Application number
14/910,161
(22) Filing date
2014-08-05
(30) Priority date
2013-08-06
(43) Publication date
2018-11-20
(45) Date of grant
2018-11-20
(51) IPC
B01D 53/14; B01D 53/18; B01J 19/24; C01B 3/38; C01B 3/52; C01B 32/50; C07C 5/10; E21B 43/16; E21B 43/40; B01D 53/75
(52) CPC
  • C07C Acyclic or carbocyclic compounds: 5/10
  • B01D Separation: 2252/20478, 2253/1124, 2256/16, 2257/304, 2257/502, 2257/7025, 53/04, 53/047, 53/1418, 53/1425, 53/1475, 53/18, 53/265, 53/75
  • B01J Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus: 19/245, 2219/00051, 2219/24
  • C01B Non-metallic elements; compounds thereof; {metalloids or compounds thereof not covered by subclass C01C}: 2203/0233, 2203/0283, 2203/0405, 2203/0415, 2203/043, 2203/0475, 2203/065, 2203/1058, 2203/1076, 2203/1235, 3/38, 3/48, 3/52
  • E21B Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells: 43/00, 43/164, 43/40
  • Y02C Capture, storage, sequestration or disposal of greenhouse gases [ghg]: 10/06, 20/20, 20/40
  • Y02P Climate change mitigation technologies in the production or processing of goods: 20/151, 20/152, 20/156
(73) Assignee
Chiyoda Corp
(72) Inventors
Yoshimi Okada; Tomohiko Shirasaki; Osamu Ikeda; Kenichi Imagawa; Hironori Kawai; Masato Shiraga; Tatsuo Ishiyama
(54) Title
Systems and methods for producing hydrogen from a hydrocarbon and using the produced hydrogen in a hydrogenation reaction
(57) Abstract

To reduce the emission of carbon dioxide and improve the energy efficiency in a hydrogen supply system. The hydrogen supply system (1) comprises: a reformer (5) for performing steam reforming of a hydrocarbon; a shift reaction unit (6) for producing a gas containing hydrogen and carbon dioxide by causing a water gas shift reaction of a gas obtained from the reformer; a first absorber (36) for absorbing the carbon dioxide contained in the gas obtained from the shift reaction unit in an absorption liquid; a hydrogenation reaction unit (8) for producing a hydrogenated aromatic compound by causing a hydrogenation reaction of an aromatic compound with a gas that has passed through the first absorber; and a regenerator (37) for separating the carbon dioxide from the absorption liquid by re-circulating the absorption liquid from the first absorber and heating the absorption liquid with heat generated from the hydrogenation reaction.

Full text
View on Google Patents

Claims (8)

  1. A hydrogen supply system, comprising: a reformer configured to perform steam reforming of a hydrocarbon mainly consisting of methane to produce a gas containing hydrogen and carbon dioxide; a shift reaction unit configured to produce the gas containing hydrogen and carbon dioxide by causing a water gas shift reaction of a gas obtained from the reformer; a first absorber configured to absorb the carbon dioxide contained in the gas obtained from the shift reaction unit in an absorption liquid to thereby produce a gas freed from the carbon dioxide; a hydrogen purification unit configured to receive the gas produced by the first absorber and separate the hydrogen from the gas received from the first absorber such that the separated hydrogen constitutes purified hydrogen; a hydrogenation reaction unit connected to the hydrogen purification unit to receive the purified hydrogen from the hydrogen purification unit and configured to produce a hydrogenated aromatic compound by causing a hydrogenation reaction of an aromatic compound with the purified hydrogen received from the hydrogen purification unit; a regenerator connected to the first absorber and configured to separate the carbon dioxide from the absorption liquid by re-circulating the absorption liquid from the first absorber and heating the absorption liquid with heat generated from the hydrogenation reaction; a heating furnace configured to receive the gas remaining after the hydrogen is separated by the hydrogen purification unit, combust the received gas, and supply combustion heat generated thereby to the reformer; and a pressure injection unit configured to pressure inject the carbon dioxide that is separated from the absorption liquid by the regenerator into a pressure injection well in order to increase a fluidity of the fossil fuel buried underground when extracting fossil fuel buried underground, the reformer being connected to a production well and configured to extract the fossil fuel and reform at least a part of product gas produced as the fossil fuel or associated gas thereof that is extracted from the production well.
  2. The hydrogen supply system according to claim 1, further comprising a second absorber configured to absorb carbon dioxide generated from the heating furnace in an absorption liquid; wherein the second absorber re-circulates the absorption liquid to the regenerator, and the absorption liquid that has absorbed the carbon dioxide in the second absorber is heated in the regenerator to separate the carbon dioxide therefrom.
  3. The hydrogen supply system according to claim 1, wherein the heat generated by the hydrogenation reaction is supplied to the regenerator as steam at a temperature of 100 to 200° C. and a pressure of 0.10 to 1.62 MPaA.
  4. The hydrogen supply system according to claim 1, further comprising a first separation unit having an inorganic membrane configured to separate the hydrogen and the carbon dioxide in the gas obtained from the shift reaction unit from each other.
  5. The hydrogen supply system according to claim 4, wherein the production well is provided in a shale formation for extracting natural gas, and the natural gas is extracted as the fossil fuel.
  6. The hydrogen supply system according to claim 5, wherein the product gas includes the natural gas extracted from the shale formation and the pressure injected carbon dioxide, and the system further comprises a second separation unit configured to separate the natural gas and the carbon dioxide of the product gas from each other, the reformer reforming at least part of the natural gas separated by the second separation unit, and the pressure injection unit pressure injecting the carbon dioxide separated by the second separation unit into the pressure injection well in order to increase a fluidity of the fossil fuel buried underground.
  7. The hydrogen supply system according to claim 1, wherein the production well is provided in an oil field for extracting petroleum, and the petroleum is extracted as the fossil fuel.
  8. The hydrogen supply system according to claim 1, further comprising a desulfurization unit configured to remove a sulfur content from the product gas before the product gas is reformed by the reformer.

Description

The present invention relates to a hydrogen supply system and a hydrogen supply method for producing hydrogen from a hydrocarbon and supplying the produced hydrogen.

With the view of reducing the emission of carbon dioxide gas which is known as a major cause of global warming, there is a growing movement to use hydrogen gas that contains no carbon instead of hydrocarbons such as petroleum. In the field of transportation, extensive research efforts have been directed to hydrogen vehicles that directly burn hydrogen gas and fuel cell vehicles using fuel cells. Fixed fuel cells for cogeneration purposes are also being actively developed.

Hydrogen gas can be produced by the reforming of hydrocarbons and the electrolysis of water. Steam reforming is one of possible reforming processes, and produces hydrogen and carbon monoxide by causing a reaction between steam and hydrocarbons such as natural gas and naphtha at a high temperature in the presence of a catalyst. See Patent Document 1, for instance. The carbon monoxide obtained by the steam reforming is caused to react with water in a water gas shift reaction, thereby producing hydrogen and carbon dioxide gases.

When hydrogen gas is produced by reforming hydrocarbons, carbon dioxide is inevitably produced as a byproduct. Therefore, in order to prevent the carbon dioxide from being released to the atmosphere and avoid contributing to global warming, the carbon dioxide gas is required to be separated from the hydrogen gas, and stored in an appropriate manner.

Citations (25)

  • US3694344A
  • US4052176A
  • JPH05301023A
  • WO2001004046A1
  • JP2003040601A
  • WO2004026441A1
  • JP2005200254A
  • JP2007031255A
  • JP2007153726A
  • JP2008290927A
  • US20090029446A1
  • JP2009029676A
  • JP2009221057A
  • US20110015282A1
  • US20120014853A1
  • US20100158776A1
  • JP2012519649A
  • US20120010304A1
  • US20120316252A1
  • US20120317833A1
  • US20110296986A1
  • JP2012176879A
  • JP2013049601A
  • US20140357737A1
  • JP2013087021A
Record as JSON 
{
  "publication_number": "US10131593B2",
  "country": "US",
  "kind": "B2",
  "title": "Systems and methods for producing hydrogen from a hydrocarbon and using the produced hydrogen in a hydrogenation reaction",
  "abstract": "To reduce the emission of carbon dioxide and improve the energy efficiency in a hydrogen supply system. The hydrogen supply system (1) comprises: a reformer (5) for performing steam reforming of a hydrocarbon; a shift reaction unit (6) for producing a gas containing hydrogen and carbon dioxide by causing a water gas shift reaction of a gas obtained from the reformer; a first absorber (36) for absorbing the carbon dioxide contained in the gas obtained from the shift reaction unit in an absorption liquid; a hydrogenation reaction unit (8) for producing a hydrogenated aromatic compound by causing a hydrogenation reaction of an aromatic compound with a gas that has passed through the first absorber; and a regenerator (37) for separating the carbon dioxide from the absorption liquid by re-circulating the absorption liquid from the first absorber and heating the absorption liquid with heat generated from the hydrogenation reaction.",
  "claims": [
    "1. A hydrogen supply system, comprising: a reformer configured to perform steam reforming of a hydrocarbon mainly consisting of methane to produce a gas containing hydrogen and carbon dioxide; a shift reaction unit configured to produce the gas containing hydrogen and carbon dioxide by causing a water gas shift reaction of a gas obtained from the reformer; a first absorber configured to absorb the carbon dioxide contained in the gas obtained from the shift reaction unit in an absorption liquid to thereby produce a gas freed from the carbon dioxide; a hydrogen purification unit configured to receive the gas produced by the first absorber and separate the hydrogen from the gas received from the first absorber such that the separated hydrogen constitutes purified hydrogen; a hydrogenation reaction unit connected to the hydrogen purification unit to receive the purified hydrogen from the hydrogen purification unit and configured to produce a hydrogenated aromatic compound by causing a hydrogenation reaction of an aromatic compound with the purified hydrogen received from the hydrogen purification unit; a regenerator connected to the first absorber and configured to separate the carbon dioxide from the absorption liquid by re-circulating the absorption liquid from the first absorber and heating the absorption liquid with heat generated from the hydrogenation reaction; a heating furnace configured to receive the gas remaining after the hydrogen is separated by the hydrogen purification unit, combust the received gas, and supply combustion heat generated thereby to the reformer; and a pressure injection unit configured to pressure inject the carbon dioxide that is separated from the absorption liquid by the regenerator into a pressure injection well in order to increase a fluidity of the fossil fuel buried underground when extracting fossil fuel buried underground, the reformer being connected to a production well and configured to extract the fossil fuel and reform at least a part of product gas produced as the fossil fuel or associated gas thereof that is extracted from the production well.",
    "2. The hydrogen supply system according to claim 1, further comprising a second absorber configured to absorb carbon dioxide generated from the heating furnace in an absorption liquid; wherein the second absorber re-circulates the absorption liquid to the regenerator, and the absorption liquid that has absorbed the carbon dioxide in the second absorber is heated in the regenerator to separate the carbon dioxide therefrom.",
    "3. The hydrogen supply system according to claim 1, wherein the heat generated by the hydrogenation reaction is supplied to the regenerator as steam at a temperature of 100 to 200° C. and a pressure of 0.10 to 1.62 MPaA.",
    "4. The hydrogen supply system according to claim 1, further comprising a first separation unit having an inorganic membrane configured to separate the hydrogen and the carbon dioxide in the gas obtained from the shift reaction unit from each other.",
    "5. The hydrogen supply system according to claim 4, wherein the production well is provided in a shale formation for extracting natural gas, and the natural gas is extracted as the fossil fuel.",
    "6. The hydrogen supply system according to claim 5, wherein the product gas includes the natural gas extracted from the shale formation and the pressure injected carbon dioxide, and the system further comprises a second separation unit configured to separate the natural gas and the carbon dioxide of the product gas from each other, the reformer reforming at least part of the natural gas separated by the second separation unit, and the pressure injection unit pressure injecting the carbon dioxide separated by the second separation unit into the pressure injection well in order to increase a fluidity of the fossil fuel buried underground.",
    "7. The hydrogen supply system according to claim 1, wherein the production well is provided in an oil field for extracting petroleum, and the petroleum is extracted as the fossil fuel.",
    "8. The hydrogen supply system according to claim 1, further comprising a desulfurization unit configured to remove a sulfur content from the product gas before the product gas is reformed by the reformer."
  ],
  "description_excerpt": "The present invention relates to a hydrogen supply system and a hydrogen supply method for producing hydrogen from a hydrocarbon and supplying the produced hydrogen.\n\nWith the view of reducing the emission of carbon dioxide gas which is known as a major cause of global warming, there is a growing movement to use hydrogen gas that contains no carbon instead of hydrocarbons such as petroleum. In the field of transportation, extensive research efforts have been directed to hydrogen vehicles that directly burn hydrogen gas and fuel cell vehicles using fuel cells. Fixed fuel cells for cogeneration purposes are also being actively developed.\n\nHydrogen gas can be produced by the reforming of hydrocarbons and the electrolysis of water. Steam reforming is one of possible reforming processes, and produces hydrogen and carbon monoxide by causing a reaction between steam and hydrocarbons such as natural gas and naphtha at a high temperature in the presence of a catalyst. See Patent Document 1, for instance. The carbon monoxide obtained by the steam reforming is caused to react with water in a water gas shift reaction, thereby producing hydrogen and carbon dioxide gases.\n\nWhen hydrogen gas is produced by reforming hydrocarbons, carbon dioxide is inevitably produced as a byproduct. Therefore, in order to prevent the carbon dioxide from being released to the atmosphere and avoid contributing to global warming, the carbon dioxide gas is required to be separated from the hydrogen gas, and stored in an appropriate manner.",
  "cpc": [
    "C07C 5/10",
    "B01D 2252/20478",
    "B01D 2253/1124",
    "B01D 2256/16",
    "B01D 2257/304",
    "B01D 2257/502",
    "B01D 2257/7025",
    "B01D 53/04",
    "B01D 53/047",
    "B01D 53/1418",
    "B01D 53/1425",
    "B01D 53/1475",
    "B01D 53/18",
    "B01D 53/265",
    "B01D 53/75",
    "B01J 19/245",
    "B01J 2219/00051",
    "B01J 2219/24",
    "C01B 2203/0233",
    "C01B 2203/0283",
    "C01B 2203/0405",
    "C01B 2203/0415",
    "C01B 2203/043",
    "C01B 2203/0475",
    "C01B 2203/065",
    "C01B 2203/1058",
    "C01B 2203/1076",
    "C01B 2203/1235",
    "C01B 3/38",
    "C01B 3/48",
    "C01B 3/52",
    "E21B 43/00",
    "E21B 43/164",
    "E21B 43/40",
    "Y02C 10/06",
    "Y02C 20/20",
    "Y02C 20/40",
    "Y02P 20/151",
    "Y02P 20/152",
    "Y02P 20/156"
  ],
  "ipc": [
    "B01D 53/14",
    "B01D 53/18",
    "B01J 19/24",
    "C01B 3/38",
    "C01B 3/52",
    "C01B 32/50",
    "C07C 5/10",
    "E21B 43/16",
    "E21B 43/40",
    "B01D 53/75"
  ],
  "assignees": [
    "Chiyoda Corp"
  ],
  "inventors": [
    "Yoshimi Okada",
    "Tomohiko Shirasaki",
    "Osamu Ikeda",
    "Kenichi Imagawa",
    "Hironori Kawai",
    "Masato Shiraga",
    "Tatsuo Ishiyama"
  ],
  "filing_date": "2014-08-05",
  "publication_date": "2018-11-20",
  "grant_date": "2018-11-20",
  "priority_date": "2013-08-06",
  "application_number": "US-201414910161-A",
  "family_id": "52460963",
  "cited_by_count": 16,
  "citations": [
    "US3694344A",
    "US4052176A",
    "JPH05301023A",
    "WO2001004046A1",
    "JP2003040601A",
    "WO2004026441A1",
    "JP2005200254A",
    "JP2007031255A",
    "JP2007153726A",
    "JP2008290927A",
    "US20090029446A1",
    "JP2009029676A",
    "JP2009221057A",
    "US20110015282A1",
    "US20120014853A1",
    "US20100158776A1",
    "JP2012519649A",
    "US20120010304A1",
    "US20120316252A1",
    "US20120317833A1",
    "US20110296986A1",
    "JP2012176879A",
    "JP2013049601A",
    "US20140357737A1",
    "JP2013087021A"
  ]
}

Record 3,171 of 8,000 in Patents full text (MLC-0201). Request the full dataset.