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Device and process for separating and recycling non-methane total hydrocarbons and hydrogen gas from refinery dry gas

A refinery dry gas and hydrogen technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve problems such as unrealized

Inactive Publication Date: 2014-04-30
上海同利环境科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, it has not been realized in terms of existing technologies to find relevant adsorption processes and suitable adsorption for adsorbing various hydrocarbon compounds.
Therefore, in the existing reports, they often focus on the separation and recovery of ethylene gas only, while abandoning other hydrocarbon components.

Method used

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  • Device and process for separating and recycling non-methane total hydrocarbons and hydrogen gas from refinery dry gas
  • Device and process for separating and recycling non-methane total hydrocarbons and hydrogen gas from refinery dry gas
  • Device and process for separating and recycling non-methane total hydrocarbons and hydrogen gas from refinery dry gas

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Embodiment Construction

[0078] Now, the present invention will be described in further detail in conjunction with the accompanying drawings and specific embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0079] This embodiment is the separation and recovery of C from the flare gas discharged from refinery dry gas 2 and C 2 + Pressure swing adsorption method for light hydrocarbon components and concentrated hydrogen, the gas flow rate is 3000Nm 3 / h, its gas composition is as shown in Table 1:

[0080] Table 1 Composition of mixed gas before separation and recovery (V%)

[0081]

[0082] The pressure swing adsorption system of this embodiment consists of PSA-C 2 + / R and PSA-H 2 It consists of two sections. Raw gas passes through PSA-C successively 2 + / R and PSA-H 2 Two sections, in PSA-C 2 + In / R section, C...

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Abstract

The invention provides a device for separating and recycling hydrocarbon components and hydrogen gas from refinery dry gas and a process for separating and recycling the hydrocarbon components and the hydrogen gas by adopting the device. After treatment by the method, C2 and C2+ light hydrocarbon components in the mixture gas can be recycled, moreover, H2 in the mixture gas can be concentrated and purified, so that the additional value of the mixture gas is maximized, ideal economic benefits can be produced, Chinese energy development strategies are met, and besides, carbon dioxide emissions are reduced.

Description

technical field [0001] The patent of the present invention relates to a two-stage pressure swing adsorption (PSA-C 2 + / R and PSA-H 2 ) Separation and recovery of C in the dry gas discharged from the refinery or polymerized olefin production process 2 and C 2 + Product gas and product gas H 2 The process is especially suitable for recovering C from refinery dry gas 2 and C 2 + Product gas, H 2 valuable components. Background technique [0002] Refinery dry gas from refineries and flare gas from polyolefin units contain large amounts of C 2 、C 2 + Light hydrocarbon components and H 2 components, light hydrocarbon components mainly contain CH 4 (~10.49%), C 2 h 4 (~8.55%), C 2 h 6 (~2.41%), C 3 h 6 (~1.52%), C 4 with C 4 + (~3.18%), H 2 (~23.46%). Some of these are used as fuel gas, and some are sent to the flare venting system for combustion. If the C in it is not recycled 2 、C 2 + 、H 2 components, resulting in a large amount of light hydrocarbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/047
Inventor 宋金洲史林华
Owner 上海同利环境科技有限公司
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