Method for setting up mould of cracking reaction in ethylene cracking furance burning and reacting tube

A cracking reaction and ethylene cracking technology, which is used in hydrocarbon cracking to produce hydrocarbons, special data processing applications, instruments, etc. It can solve the problems of complex elementary reaction model, large amount of calculation, and narrow scope of application.
CN1936908AInactive Publication Date: 2007-03-28SINOPEC YANGZI PETROCHEM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SINOPEC YANGZI PETROCHEM
Publication Date
2007-03-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The disclosed modeling method includes following procedures: building model of cracking fire room; building physical model under size and character identical to actual fire room; based on component analysis result for fuel gas to build PDF model of probability density function from not premixed combustion inside fire room, and to carry out calculating combustion of fuel gas inside fire room; building model of reaction tube of cracking furnace, and molecular reaction model adopted by cracking reaction model inside tubes so that calculated ethane yield from exit of reaction tube is near to or identical to actual yield; carrying out coupling calculation between burning model of cracking fire room and model of reaction tube of cracking furnace; when carrying out coupling calculation, the method carries out programming calculated tube wall temperature and heat flux. The invention is especially suitable to ethene cracker with heat supply from base and burner on sidewall.
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Description

technical field

[0001] The invention relates to a modeling method for gas combustion in an ethylene cracking furnace and a cracking reaction in a reaction tube. Background technique

[0002] The cracking furnace is the key equipment in the ethylene plant. Through the combustion of fuel such as gas or oil in the bottom or side wall burners to release heat, the raw material oil in the furnace reaction tube is cracked and reacted to generate olefins.

[0003] The establishment of cracking reaction model of cracking furnace can predict the yield of olefins, which is of great significance to the adjustment of process parameters or the design and transformation of cracking furnace. Since the pyrolysis reaction is an endothermic reaction, it is greatly affected by the combustion of the furnace gas. Therefore, when modeling the cracking reaction, the combustion of the furnace gas must be modeled. For the furnace combustion process, to simplify the calculation, the partition method ...

Claims

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