Method and apparatus for separating nitrogen from a mixed stream comprising nitrogen and methane

A mixed flow and separation technology, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve problems such as complex construction process, increased operation, and expensive contactors

Inactive Publication Date: 2011-12-14
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The setup of such a prefabricated monolith comprising channels coated with absorbent may have to be glazed to prevent gas from entering the body of the monolith and to maintain fluid separation of the heating and cooling

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  • Method and apparatus for separating nitrogen from a mixed stream comprising nitrogen and methane
  • Method and apparatus for separating nitrogen from a mixed stream comprising nitrogen and methane
  • Method and apparatus for separating nitrogen from a mixed stream comprising nitrogen and methane

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Embodiment Construction

[0026] A method is presented herein for the separation of nitrogen from a mixed stream containing nitrogen and methane using a monolithic adsorption contactor formed of activated carbon that does not require a prefabricated monolith with an absorbent coating, or No treatment is required to seal the channel walls.

[0027] figure 1 A typical monolithic adsorption contactor 2 is shown. It is formed of a single construction of absorbent material (eg activated carbon) and it is provided with a barrier layer 2f. The contactor houses one or more separate flow channels 2 a throughout the monolithic adsorption contactor 2 . Such as figure 1 As shown, the separation flow channel runs through the end face 2g of the integral adsorption contactor 2 . One or more of the separate flow channels has at least one inlet (2b) to allow the mixed flow to enter the flow channel 2a. On the other side, there is at least one outlet (not shown). One or more separate flow channels 2a define one or...

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Abstract

A method and apparatus for separating nitrogen from a mixed stream comprising nitrogen and methane employes a monolith sorption contactor formed of a unitary construction of active carbon, the contactor housing one or more separation flow channels, the one or more channels having at least one inlet to, and at least one outlet from, said contactor, the one or more channels defining one or more first internal surfaces of the monolith sorption contactor, the contactor further comprising one or more first external surfaces provided with a barrier layer, the first external surfaces being different from the first internal surfaces. The mixed stream is passed through at least one of the separation flow channels, where methane is sorbed. The contactor can be regenerated by contacting the contactor with a heat exchange fluid via the barrier layer at one or more of the external surfaces.

Description

technical field [0001] The present invention relates to a method and apparatus for separating nitrogen from a mixed stream containing nitrogen and methane. Background technique [0002] Several methods and apparatus are known for removing nitrogen from mixed streams comprising nitrogen and methane, such as flashing liquefied natural gas streams. One reason for removing nitrogen from the mixed stream may be to obtain natural gas with a desired heating value (ie, energy content when the gas is combusted) depending on the specific gas category or customer requirements. [0003] One known method for removing nitrogen from a mixed stream comprising nitrogen and methane is disclosed in US Patent Publication 2008 / 282885. The US Patent Publication 2008 / 282885 discloses a method for separating a first heavy gas component (such as nitrogen) from a gas mixture containing a first heavy gas component (such as nitrogen) and a second lighter gas component (such as methane). (such as nitr...

Claims

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Application Information

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IPC IPC(8): B01D53/04
CPCB01D2253/102B01D53/0462B01D2259/416B01D2256/24B01D53/04
Inventor E·L·J·范泽斯特-韦卡门R·弗尔杰恩特杰
Owner SHELL INT RES MAATSCHAPPIJ BV
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