Heat accumulation tubular reaction system

Abstract

The invention relates to a heat accumulation tubular reaction system. The system comprises a tubular reactor and a heat accumulation tubular heating device, wherein the heat accumulation tubular heating device comprises a left heat accumulation chamber, a right heat accumulation chamber, a combustion chamber and an oil gas pipeline; the left heat accumulation chamber and the right heat accumulation chamber are connected with a reversing valve through pipelines respectively; the reversing valve is connected with a combustion-supporting air inlet and a combustion gas outlet respectively; the left heat accumulation chamber and the right heat accumulation chamber are connected with the combustion chamber through burner nozzles respectively; the combustion chamber is internally provided with a left porous fire-proof wall and a right porous fire-proof wall; the tubular reactor is arranged in the combustion chamber and is located between the two porous fire-proof walls; a reaction gas outlet, which penetrates through the top of the combustion chamber, is formed in the upper end of the tubular reactor; a reaction gas inlet, which penetrates through the bottom of the combustion chamber, is formed in the lower end of the tubular reactor; the reaction gas inlet is connected with a gas outlet of a tubular heat exchanger. The heat accumulation tubular reaction system can be used for pre-heating reaction gas and the reaction efficiency is improved; the heat accumulation tubular heating device is adopted so that residual heat of flue gas is extremely recycled; the porous fire-proof walls are arranged so that the distribution of the temperature in the combustion chamber is more uniform.

Description

technical field [0001] The present invention generally relates to a chemical reaction device, in particular to a thermal storage tubular reaction system. Background technique [0002] Both ethylene and benzene are important basic raw materials in modern industry, and are also the chemicals with the largest output in the world. Their products are widely used in national economy, people's life, national defense and other fields. Facing the continuous consumption and shortage of petroleum resources and the national conditions of our country being poor in oil and rich in coal, the acquisition of petroleum has become a bottleneck in the development of the ethylene and benzene industries, and it is also a problem that needs to be solved urgently in front of people. Therefore, the research and development of a new raw material and its process method to prepare ethylene and benzene to replace petroleum is of great significance to alleviate the dependence on imported petroleum. [0...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a heat storage tubular reaction system, which mainly solves the problems of uneven temperature of the reaction gas from entering to the completion of the reaction, uneven temperature field of the reaction tube, and energy waste in the reaction process in the prior art

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