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Adsorption enhanced methane water steam reforming hydrogen production device and method

A technology for reforming a hydrogen production device and methane steam, applied in chemical instruments and methods, through selective and reversible absorption of hydrogen separation, hydrogen, etc. The problem of high cost can reduce the cost and labor intensity, reduce the loss of activity and service life, and avoid the energy consumption of heating up.

Pending Publication Date: 2020-02-21
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these processes use fixed-bed or fluidized-bed reactors for adsorption-enhanced steam reforming of methane, which cannot achieve continuous operation or the separation of catalyst and adsorbent, and the operating costs are high.

Method used

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  • Adsorption enhanced methane water steam reforming hydrogen production device and method

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Effect test

Embodiment 1

[0034] A method for adsorption enhanced methane steam reforming hydrogen production unit, comprising the following steps:

[0035] a, the mixed gas of water vapor and methane after preheating is passed in the grid type fluidized fixed reactor 1 together with the adsorbent that the regenerative reactor 3 comes over, and the catalyst inside the grid type fluidized fixed reactor 1 Coating 11 contacts to react, adsorb and strengthen reforming reaction; the molar ratio of water vapor and methane is 4:1; the operating pressure of the grid-type fluidized fixed reactor is 1 MPa; the reaction temperature is 500°C;

[0036] b. The gas-solid mixture coming out from the grid-type fluidized fixed reactor 1 enters the cyclone separator 2 for separation;

[0037] c. The adsorbent coming out of the cyclone separator 2 enters the regeneration reactor 3 to regenerate the adsorbent. The regenerated adsorbent passes through the feeding pipe 2 under the action of the regeneration gas, and enters t...

Embodiment 2

[0042] A method for adsorption enhanced methane steam reforming hydrogen production unit, comprising the following steps:

[0043] a, the mixed gas of water vapor and methane after preheating is passed in the grid type fluidized fixed reactor 1 together with the adsorbent that the regenerative reactor 3 comes over, and the catalyst inside the grid type fluidized fixed reactor 1 Coating 11 contacts to react, adsorb and strengthen reforming reaction; the molar ratio of water vapor to methane is 4:1; the operating pressure of the grid-type fluidized fixed reactor is 1.5MPa; the reaction temperature is 550°C;

[0044] b. The gas-solid mixture coming out from the grid-type fluidized fixed reactor 1 enters the cyclone separator 2 for separation;

[0045] c. The adsorbent coming out of the cyclone separator 2 enters the regeneration reactor 3 to regenerate the adsorbent. The regenerated adsorbent passes through the feeding pipe 2 under the action of the regeneration gas, and enters t...

Embodiment 3

[0050] A method for adsorption enhanced methane steam reforming hydrogen production unit, comprising the following steps:

[0051] a, the mixed gas of water vapor and methane after preheating is passed in the grid type fluidized fixed reactor 1 together with the adsorbent that the regenerative reactor 3 comes over, and the catalyst inside the grid type fluidized fixed reactor 1 Coating 11 contacts and reacts, adsorbs and strengthens reforming reaction; the molar ratio of water vapor and methane is 4:1; the operating pressure of the grid type fluidized fixed reactor is 1-2 MPa; the reaction temperature is 500-600 ℃;

[0052] b. The gas-solid mixture coming out from the grid-type fluidized fixed reactor 1 enters the cyclone separator 2 for separation;

[0053] c. The adsorbent coming out of the cyclone separator 2 enters the regeneration reactor 3 to regenerate the adsorbent. The regenerated adsorbent passes through the feeding pipe 2 under the action of the regeneration gas, a...

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Abstract

The invention discloses an adsorption enhanced methane water steam reforming hydrogen production device comprising a grid type fluidized fixed composite reactor, a cyclone separator and a regenerationreactor; a plurality of catalyst coating layers are arranged on the grid type fluidized fixed composite reactor; a gas outlet in the upper end of the grid type fluidized fixed composite reactor communicates with a gas inlet of the cyclone separator; a discharge port in the lower end of the cyclone separator communicates with the regeneration reactor. The device further comprises a discharge pipe,one end of the discharge pipe communicates with the middle of the regeneration reactor, and the other end of the discharge pipe communicates with the lower end of the grid type fluidized fixed composite reactor. A catalyst and an adsorbent is separated, the process can be continuously operated, and the production cost and the labor intensity are further reduced; and moreover, the possibility thatthe catalyst enters a high-temperature regeneration area and the heating energy consumption of the catalyst are completely avoided, the loss of catalyst activity and service life is reduced, the device investment and energy consumption are saved, and more cost is saved.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, and more specifically relates to an adsorption enhanced methane steam reforming hydrogen production device and method. Background technique [0002] Steam reforming of methane has been applied for the first time since 1926. After decades of process improvement, it is currently the most widely used method for hydrogen production from natural gas that has been industrialized. The traditional methane steam reforming process includes: preheating and pretreatment of raw materials, steam reforming, high and low temperature conversion of carbon monoxide, waste heat recovery, and hydrogen purification. The core is the reformer. [0003] The steam reforming reaction of methane is a strong endothermic reaction, which needs to be carried out at high temperature, 750℃~900℃. At the same time, in order to improve the conversion rate, the pressure should be increased. The reaction condition is 1....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/38C01B3/50C01B32/50
CPCC01B3/38C01B3/508C01B32/50C01B2203/0233C01B2203/1035C01B2203/1241C01B2203/0425Y02P20/584
Inventor 荆洁颖刘道诚金杰冯杰李文英
Owner TAIYUAN UNIV OF TECH
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