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Method for preparing hydrogen gas by taking marsh gas as raw material

A raw material and biogas technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of high production cost and complicated process, and achieve the effect of cost reduction, simple process and lower production cost

Inactive Publication Date: 2012-08-08
ALLY HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of complicated process and high production cost in the hydrogen preparation method in the prior art, and provide a method for preparing hydrogen with biogas as raw material

Method used

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  • Method for preparing hydrogen gas by taking marsh gas as raw material
  • Method for preparing hydrogen gas by taking marsh gas as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: as figure 1 Shown in-3, a kind of method using biogas as raw material to prepare hydrogen comprises the following steps:

[0025] A. At room temperature, the raw material biogas with a pressure of 1.2Mpa (G) is heated to 340-360°C by the first heat exchanger, and then enters the desulfurization reactor for desulfurization. The total sulfur content in the gas is controlled at 20mg / m 3 the following;

[0026] B. After the desulfurized gas is heated to 580-600°C by the second heat exchanger, it enters the tube side of the shell-and-tube reactor. 2 o 3 Carry out reforming reaction under the action of catalyst;

[0027] C. The gas obtained in step B is sent to the CO converter to react with the superheated steam after being heat-exchanged by the second heat exchanger, and the gas obtained by the reaction is sent to the membrane separator for separation, and the product hydrogen and the tail gas of the device are obtained by separation ;

[0028] D, the dev...

Embodiment 2

[0032] Embodiment 2: as figure 1 Shown in-3, a kind of method using biogas as raw material to prepare hydrogen comprises the following steps:

[0033]A. At room temperature, the raw material biogas with a pressure of 1.2Mpa (G) is heated to 340-360°C by the first heat exchanger, and then enters the desulfurization reactor for desulfurization. The total sulfur content in the gas is controlled at 20mg / m 3 the following;

[0034] B. After the desulfurized gas is heated to 580-600°C by the second heat exchanger, it enters the tube side of the shell-and-tube reactor, and undergoes reforming reaction under the action of Ni / SBA-15 catalyst;

[0035] C. The gas obtained in step B is sent to the CO converter to react with the superheated steam after being heat-exchanged by the second heat exchanger, and the gas obtained by the reaction is sent to the membrane separator for separation, and the product hydrogen and the tail gas of the device are obtained by separation ;

[0036] D, th...

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Abstract

The invention discloses a method for preparing hydrogen gas by taking marsh gas as a raw material. The method comprises the following steps of: preheating the marsh gas serving as the raw material, desulfurizing, heating, performing a reforming reaction, and the like. The method has a simple process, increases the heat utilization ratio of a device and lowers production cost.

Description

technical field [0001] The invention relates to a method for preparing hydrogen by using biogas as a raw material, in particular to a method for preparing hydrogen by using biogas as a raw material for heat provided by a catalytic combustion process. Background technique [0002] Biogas is a combustible gas produced by the fermentation of microorganisms under anaerobic conditions. Biogas is a mixture of various gases, generally containing 50-70% methane, and the rest is carbon dioxide and a small amount of nitrogen, hydrogen and hydrogen sulfide. Methane, the main component of biogas, is an ideal gas fuel. It is colorless and odorless. It can be burned after being mixed with an appropriate amount of air. The calorific value of pure methane per cubic meter is 34,000 kJ. The calorific value of biogas per cubic meter is about 20,800-23,600 kJ, that is, after 1 cubic meter of biogas is completely burned, it can produce the heat equivalent to 0.7 kg of anthracite. Compared with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/48
Inventor 王业勤陈志国杜雯雯
Owner ALLY HI TECH CO LTD
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