Small-sized coal gasification hydrogen making method

A small-scale, coal gasification technology, which is applied in hydrogen separation, hydrogen production, chemical industry, etc., can solve the problems of high hydrogen cost, high natural gas price, and difficult supply, and achieve low hydrogen cost, low production energy consumption, and low hydrogen cost. Reduced effect

Active Publication Date: 2009-03-25
SHANGHAI HANXING ENERGY TECH
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Problems solved by technology

However, due to limited natural gas resources, it is difficult to achieve reliable supply in many regions, and due to the high price of natural gas, the cost of hydrogen is also relatively high, about 1.5-2.0 yuan / m 3 no

Method used

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  • Small-sized coal gasification hydrogen making method
  • Small-sized coal gasification hydrogen making method
  • Small-sized coal gasification hydrogen making method

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Embodiment Construction

[0019] Further detailed description will be given below in conjunction with the embodiments and accompanying drawings.

[0020] As shown in Figure 1, the present invention uses anthracite as raw material to produce hydrogen, including interstitial coal gasification, blown gas recovery, water gas dust removal and heat recovery device, desulfurization and sulfur recovery, water gas compression and conversion, VPSA decarburization, PSA hydrogen purification, etc. Part of the process and the corresponding equipment. The gist of the present invention is to combine the processes and equipment of each part into a complete process flow to achieve the purpose of using coal to produce hydrogen. As far as the local and single equipment is concerned, the principles and structures are well known.

[0021] According to Figure 2 to Figure 5, the process flow of small-scale high-efficiency coal gasification hydrogen production complete set of process equipment and technology is described as f...

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Abstract

The invention discloses a mini-type coal-gasifying hydrogen preparation method which comprises the following steps: blind coals are burnt and introduced with steam to prepare water gas; the water gas is processed by electricity to remove tar and then is processed by wet desulphurization so as to lead the content of H<2>S to be less than 200ppm; the water gas is converted to obtain a converted gas mixed by CO<2> and H<2>; VPSA decarbonization is carried out to remove the impurity of H<2>O and CO<2> from the converted gas; PSA purification is carried out to remove all the impurity except hydrogen so as to obtain the hydrogen product. Compared with the mini-type natural-gas hydrogen preparation method, the method has simple process, easily-supplied materials and low energy consumption; the cost of preparing hydrogen can be reduced by 30 to 50 percent and then the investment can be saved by 20 percent. The method can be applicable to industries of petrifaction, metallurgy, food production, electronic, non-ferrous metals processing, steel, fine chemicals and the like, with the hydrogen consumption of 2000 to 50000m<3>n / h.

Description

[technical field] [0001] The invention relates to a small-scale coal vaporization method for producing hydrogen, and more specifically, an intermittent coal vaporization method for producing high-purity hydrogen that uses anthracite as a raw material and can realize steam self-sufficiency. [Background technique] [0002] At present, my country's hydrogen supply capacity is 2000m 3 n / h~50000m 3 The n / h-scale hydrogen production device mostly adopts technologies such as natural gas conversion to hydrogen production, and has been commercialized in China. However, due to limited natural gas resources, it is difficult to achieve reliable supply in many regions, and due to the high price of natural gas, the cost of hydrogen is also relatively high, about 1.5-2.0 yuan / m 3 n. [Content of the invention] [0003] The purpose of the present invention is to provide a small-scale efficient coal vaporization hydrogen production method that uses easier-to-obtain anthracite as raw mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/06C01B3/50
CPCY02E60/36Y02P20/10
Inventor 敖元
Owner SHANGHAI HANXING ENERGY TECH
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