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A tube cracking furnace

A tubular cracking furnace and furnace lining technology, which is applied in the direction of cracking, hydrocarbon cracking to hydrocarbon, non-catalytic thermal cracking, etc., can solve the problems of uneven heating of cracking furnace, high temperature, and reduce the operating cycle of cracking furnace, so as to achieve simple structure, Increase the rate of cracking reaction and facilitate the effect of popularization and application

Active Publication Date: 2018-07-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The second is that the radiation heat transfer of the furnace wall of the cracking furnace has no difference for the furnace tube row, that is, the heat transfer area of ​​the furnace wall of the cracking furnace is the same for both the inlet tube row and the outlet tube row, and for areas with large heat flux and The same is true for the area with small heat flux, which will lead to uneven local heating of the cracking furnace, which will cause the local temperature of the furnace tube to be too high and reduce the operating cycle of the cracking furnace

Method used

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  • A tube cracking furnace
  • A tube cracking furnace
  • A tube cracking furnace

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with accompanying drawing.

[0031] figure 1 It is a structural schematic diagram of the tubular cracking furnace 10 according to the present invention. The tubular cracking furnace 10 is mainly used for heating various cracking raw materials such as natural gas, refinery gas, crude oil and naphtha, so as to promote the carbon chain breaking chemical reaction of the cracking raw materials to generate low-carbon hydrocarbons such as ethylene, propylene and / or butadiene. Carbene and various by-products.

[0032] like figure 1 As shown, the tube cracking furnace 10 includes a radiation chamber 2, a convection chamber 3 connected to the radiation chamber 2 and staggered higher than the radiation chamber 2, and a furnace tube assembly 4 arranged in the radiation chamber 2, located on the top of the radiation chamber 2 A quenching boiler 6 (a conventional product in the field) above and communicated with ...

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Abstract

The invention relates to a tubular cracking furnace. The tubular cracking furnace comprises a radiation cavity furnace lining for limiting a radiation cavity, and a furnace tube assembly arranged in the radiation cavity, wherein at least one reflection component for reflecting heat radiation in the radiation cavity to the furnace tube assembly is arranged on an inner side wall of the radiation cavity furnace lining. According to the tubular cracking furnace provided by the invention, cracking reaction can be remarkably accelerated.

Description

technical field [0001] The invention relates to a cracking furnace, in particular to a tube cracking furnace. The tubular cracking furnace is used to heat various cracking raw materials such as natural gas, refinery gas, crude oil and naphtha, so as to promote the carbon chain breaking chemical reaction of the cracking raw materials, and generate hydrocarbons such as ethylene, propylene and / or butadiene and other low carbon olefins and various by-products. Background technique [0002] Low-carbon olefins such as ethylene, propylene and butadiene are important basic raw materials for the petrochemical industry. At present, the method for producing low-carbon olefins is mainly based on the tube furnace petroleum hydrocarbon steam cracking process. According to statistics, about 99% of ethylene, more than 50% of propylene and more than 90% of butadiene in the world are produced through this process. [0003] The core equipment of the tubular furnace petroleum hydrocarbon ste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G9/20C07C4/04C07C11/04C07C11/06C07C11/167
CPCC07C4/04C10G9/20C10G2300/1037C10G2300/1044C10G2400/20C07C11/04C07C11/06C07C11/167
Inventor 周丛王国清张利军刘俊杰周先锋杜志国张永刚张兆斌
Owner CHINA PETROLEUM & CHEM CORP
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