Method and system for hydrogen production through ethyl alcohol

A technology for producing hydrogen from ethanol and anhydrous ethanol, applied in chemical instruments and methods, hydrogen, hydrogen separation, etc., can solve problems that are difficult and have not received enough attention, and achieve simple operation, easy storage and transportation, and high product returns Effect

Active Publication Date: 2019-08-27
SHANGHAI ELECTRICGROUP CORP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research on methanol-catalyzed hydrogen production has received extensive attention. Relatively speaking,

Method used

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  • Method and system for hydrogen production through ethyl alcohol
  • Method and system for hydrogen production through ethyl alcohol

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Example Embodiment

[0035] Specific embodiments of the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other, and the technical concept of the present invention can be combined with other known technologies or other technologies that are the same as those known technologies. Implement.

[0036] Reference figure 1 As shown, the method for catalytic hydrogen production from ethanol provided in this embodiment includes the following steps:

[0037] Step S1: Using absolute ethanol as a raw material, a catalytic cracking reaction occurs under the action of a catalyst to generate a mixed gas phase product of hydrogen and ethyl acetate, wherein the catalyst may be a Cu-Zn-Al catalytic system, and Cu-Zn-Al T...

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Abstract

The invention provides a method for catalytic hydrogen production through ethyl alcohol. The method comprises the following steps that absolute ethyl alcohol serves as a raw material, under the actionof a catalyst, a catalytic cracking reaction is carried out, and a hydrogen and ethyl acetate mixed gas-phase product is obtained; after cooling is conducted, gas-liquid separation is conducted, andmixed gas-phase hydrogen and mixed liquid-phase ethyl acetate are obtained; the mixed gas-phase hydrogen enters a deoxygenization device containing a deoxidation catalyst and is used for removing oxygen; the mixed gas-phase hydrogen enters a refrigerator and is used for liquefying ethyl acetate therein, and after separating is conducted, liquefied ethyl acetate is poured into an ethyl acetate tank; the mixed gas-phase hydrogen is heated and then subjected to pressure swing adsorption, and pure hydrogen gas is obtained. Accordingly, the absolute ethyl alcohol serves as the raw material, the catalytic cracking reaction is carried out under the action of the catalyst, the hydrogen gas and the by-product ethyl acetate are generated, the raw material cost is low, and the product yield is large.The pure hydrogen gas is obtained through several times of separation and purification, and can be directly applied to a fuel cell.

Description

technical field [0001] The invention relates to the field of hydrogen preparation, in particular to a method and system for preparing hydrogen from ethanol. Background technique [0002] Hydrogen is one of the ideal clean energy sources in the future, and it is also an important chemical raw material. It is widely used in hydrogenation reactions (liquefaction and vaporization of coal, reforming of heavy oil, etc.), oxygen inhibitors, internal combustion engine fuels, and refrigerant manufacturing. If hydrogen is used directly as fuel, it can obtain higher efficiency than ordinary hydrocarbon fuels, and also has excellent performance of zero pollution emissions; when hydrogen is used in hydrogen-oxygen fuel cells, it can obtain up to 45%-60% of chemical energy - Electric energy conversion efficiency, while the heat engine efficiency of a general internal combustion engine is only 15%. In recent years, due to the breakthrough of proton exchange membrane fuel cell (PEMFC) tech...

Claims

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Application Information

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IPC IPC(8): C01B3/22C01B3/50C07C67/00C07C67/48C07C69/14
CPCC01B3/22C01B3/50C07C67/00C07C67/48C01B2203/0277C01B2203/0435C01B2203/042C01B2203/048C01B2203/066C07C69/14
Inventor 马绍健郭元超丘盛昌
Owner SHANGHAI ELECTRICGROUP CORP
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