Recovery of greenhouse gas and pressurization for transport

{
  "publication_number": "US8580018B2",
  "country": "US",
  "kind": "B2",
  "title": "Recovery of greenhouse gas and pressurization for transport",
  "abstract": "A system for isolating a greenhouse gas from an exhaust gas includes a vessel having an inlet to receive an exhaust gas, and an outlet to discharge a process stream, an adsorbent contained in the vessel to selectively adsorb the greenhouse gas from the exhaust gas under suitable conditions, and a heat source to heat the adsorbent and desorb the adsorbed greenhouse gas therefrom to produce a process stream of greenhouse gas for release through the outlet.",
  "claims": [
    "1. A system for isolating carbon dioxide from an exhaust gas stream resulting from combustion, comprising: a cooler to cool a combustion exhaust gas stream containing carbon dioxide; a vessel having an inlet to receive the cooled combustion exhaust gas stream from the cooler, and an outlet to discharge a process stream; an adsorbent contained in the vessel to selectively adsorb the carbon dioxide from the cooled exhaust gas stream; a heat source to heat the adsorbent and desorb the adsorbed carbon dioxide therefrom to produce a process stream of carbon dioxide for release through the outlet; an expansion valve in fluid communication with the outlet and the cooler to provide a cooling fluid to cool the exhaust gas in the cooler.",
    "2. The system of claim 1, wherein the adsorbent is selected from zeolites, zeolitic imidazolate frameworks (ZIFs), Metal-Organic Frameworks (MOFs), and any combination thereof.",
    "3. The system of claim 1, wherein the heating source includes unutilized heat from a petrochemical refining operation or a chemical processing operation.",
    "4. The system of claim 3, wherein the unutilized heat is at a temperature of 800K or lower.",
    "5. The system of claim 4, wherein the temperature of the unutilized heat ranges from about 363K to about 453K.",
    "6. The system of claim 1, further comprising a conduit in fluid communication with the outlet to transport the process stream of greenhouse gas to another location.",
    "7. The system of claim 1, wherein the conduit is in communication with a subterranean outlet to sequester the greenhouse gas.",
    "8. The system of claim 7, wherein the subterranean outlet includes a hydrocarbon deposit."
  ],
  "description_excerpt": "The present invention relates to methods and systems of employing an adsorption process to isolate and pressurize a greenhouse gas from an exhaust gas to transport the gas. These methods and systems are particularly applicable to greenhouse gas separation and sequestration efforts.\n\nGreenhouses gases, such as carbon dioxide, nitrous oxide and ozone, are present in exhaust streams that result from combustion operations. The release of greenhouse gases to the atmosphere has become the subject of increasing concern, and may be regulated in the future. It is possible that taxes may be imposed on industrial processes based on the amount of greenhouse gas emitted.\n\nOne option to prevent the emission of greenhouse gases is to isolate the greenhouse gas and transport it to a subterranean location where it can be sequestered. As an alternative to sequestration, there are other uses for greenhouse gases, such as cooling, work or power generation, that are preferable to simply releasing the greenhouse gas to the atmosphere.\n\nIn order to either sequester, or make beneficial use of, the greenhouse gas present in an exhaust gas, it must be separated from the greenhouse gas and sufficiently pressurized for transport. Accordingly, there is a need for efficient means to isolate a greenhouse gas from an exhaust gas for transport.\n\nOne aspect of the present application provides a system for isolating a greenhouse gas from an exhaust gas.",
  "cpc": [
    "B01D 53/0462",
    "B01D 2253/108",
    "B01D 2253/204",
    "B01D 2256/22",
    "B01D 2257/504",
    "B01D 2258/0283",
    "B01D 2259/65",
    "B01D 53/04",
    "B65G 5/00",
    "Y02C 20/20",
    "Y02C 20/40"
  ],
  "ipc": [
    "B01D 53/02"
  ],
  "assignees": [
    "ExxonMobil Research and Engineering Co"
  ],
  "inventors": [
    "Bhupender S. Minhas",
    "Ian A. Cody"
  ],
  "filing_date": "2011-11-09",
  "publication_date": "2013-11-12",
  "grant_date": "2013-11-12",
  "priority_date": "2010-11-12",
  "application_number": "US-201113292393-A",
  "family_id": "45094772",
  "cited_by_count": 2,
  "citations": [
    "FR2675890A1",
    "US5137558A",
    "EP1353112A1",
    "US7282189B2",
    "WO2007111738A2",
    "US20070215350A1",
    "US7985278B2",
    "US20090173073A1",
    "US20080282888A1",
    "US7726402B2",
    "US20100132359A1",
    "US8425674B2",
    "US20100251887A1",
    "US20110239692A1",
    "US20110302932A1"
  ]
}