Heat-exchange sulfuric acid catalytic decomposition reactor and catalytic method thereof

Abstract

The invention belongs to the field of hydrogen production and chemical equipment, and in particular, relates to a heat-exchange sulfuric acid catalytic decomposition reactor comprising a shell, a gasguide plate, a bayonet tube internal heat exchange type sulfuric acid decomposition assembly, a heat insulation layer and a feeding and discharging part; the gas guide plate forms a heat exchange chamber; an annular gap is formed between the gas guide plate and the shell; the lower end of the gas guide plate abuts against the heat-insulating layer; the lower end of the gas guide plate communicateswith the annular gap; the annular gap communicates with the heating gas outlet; the feeding and discharging part is connected with the bottom end of the shell and provided with a sulfuric acid feeding port and a product outlet; the bayonet tube internal heat exchange type sulfuric acid decomposition assembly penetrates through the heat insulation layer to communicate with the feeding and discharging part, an annular gap between an inner tube and an outer tube of the bayonet tube internal heat exchange type sulfuric acid decomposition assembly communicates with the sulfuric acid feeding port,and an inner tube of the reaction tube communicates with the product outlet. According to the heat-exchange sulfuric acid catalytic decomposition reactor, high-temperature gas can be used as a heatingmedium to realize efficient catalytic decomposition of sulfuric acid.

Description

technical field [0001] The invention belongs to the field of hydrogen production and chemical equipment, and in particular relates to a heat exchange type sulfuric acid catalytic decomposition reactor and a catalytic method. Background technique [0002] Hydrogen is an important industrial raw material, as well as a non-polluting, renewable, clean energy and energy carrier. In addition to the traditional application in synthetic ammonia, synthetic methanol and other industries, the application and demand of hydrogen in petroleum refining, coal liquefaction and other fields have increased rapidly in recent years; There is also great potential for demand in other fields [1] . In 2012, my country's hydrogen production has exceeded 16 million tons, ranking first in the world, and has been growing at a rate of 7% in recent years. However, at present, most of hydrogen is produced by conversion of fossil fuels, and a large amount of CO is emitted during the process. 2 and other...

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Problems solved by technology

[0015] Although some conceptual designs and theoretical analysis and calculations have been proposed for the sulfuric acid decomposer, the heat-exchanging sulfuric acid decomposition equipment heated by gas needs to be used under very harsh conditions such as high temperature, high pressure, and strong corrosion; there are many problems in the design and manufacture of equipment. Scientific and engineering problems, including heat transfer performance, temperature and flow velocity distribution, material selection, structural layout, sealing method, etc. Therefore, there is no heat exchange type integral sulfuric acid decomposition reactor successfully produced and operated in the world.

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