Method for using initial reaction heat of crude gas transformation and hydrogen production process

A raw gas and reaction technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve problems such as unreported ideas

Inactive Publication Date: 2010-05-26
何巨堂
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Problems solved by technology

[0019] Above-mentioned inventive concept has not been reported

Method used

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Embodiment 1

[0043] Raw coal gas A completes the expected deoxygenation reaction and carbon monoxide shift reaction to produce hydrogen raw material gas purified by pressure swing adsorption. Since raw coal gas A usually contains impurities such as tar and naphthalene, in order to prolong the life of the conversion catalyst and improve the efficiency of the PSA pressure swing adsorption hydrogen extraction adsorbent, etc., before entering the reactor of the conversion process, the impurities such as naphthalene tar and naphthalene are removed. , the method used is the PSA pressure swing adsorption method, and the regeneration gas uses the analytical gas generated during the hydrogen extraction process of the pressure swing adsorption.

[0044] Raw coal gas A is boosted to 0.3MPa (absolute) by the first compressor and enters the liquid separation tank to complete liquid separation. The gas phase enters the pretreatment tower (two sets) to remove components such as naphthalene and tar. The pr...

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Abstract

The invention relates to a method for using initial reaction heat of a crude gas transformation and hydrogen production process. A plurality of reaction areas in series operation are set in the crude gas transformation reaction process, the cooling process of intermediate reaction effluent of a front reaction area in which the total transformation ratio of carbon monoxide is 30 to 50 percent comprises a water injection and vaporization process, and the temperature rise of each reaction area is generally less than 60 DEG C, preferably less than 40 DEG C. The method has the advantages of optimization of reaction temperature distribution, high utilization rate of reaction heat, scale reduction of a hot water cyclic moistening system and the like, and is particularly suitable for the crude gas transformation and hydrogen production process of high carbon monoxide content (for example, higher than 12 percent volume).

Description

technical field [0001] The invention relates to a method for hydrogen production by shifting raw coal gas, in particular, the invention relates to a method for utilizing initial reaction heat in the hydrogen production process by shifting raw coal gas. Background technique [0002] The raw coal gas mentioned in the present invention usually refers to the gas composed of hydrogen, carbon monoxide and other components (such as oxygen) from coal pyrolysis (dry distillation) process or other processes. The carbon monoxide content of typical raw coal gas is generally 8-25 % (volume), usually 10 to 18% (volume), the temperature is usually normal temperature, and the pressure is slightly positive pressure. [0003] For the raw gas shift hydrogen production process, the water-to-carbon molecular ratio is an important technical and economic index. Before the raw gas starts the shift reaction, it usually goes through a humidification step to reach a certain water-to-carbon molecular r...

Claims

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Application Information

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IPC IPC(8): C01B3/16
Inventor 何巨堂
Owner 何巨堂
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