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Hydrocarbons pyrolysis coking judgment pilot experimental device

A high-temperature cracking, hydrocarbon technology, used in cracking, non-catalytic thermal cracking, petroleum industry and other directions

Inactive Publication Date: 2008-01-30
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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  • Hydrocarbons pyrolysis coking judgment pilot experimental device
  • Hydrocarbons pyrolysis coking judgment pilot experimental device

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Embodiment Construction

[0016] In the present invention, the deionized water metering pump and the cracking raw material metering pump are respectively connected with the outlets of the deionized water storage tank and the cracking raw material storage tank; The outlet of the pump is respectively connected to the inlet pipelines of the deionized water vaporizer and the cracking raw material gasifier; after gasification, the two gases converge at the outlet of the gasifier, and the merged pipeline is connected with the inlet pipeline of the preheating section; After the gas is preheated in the preheating section, the outlet pipe of the preheating section is connected to the inlet pipe of the cracking section, and the superheated gas undergoes cracking reaction in the cracking section, and coke deposits on the tube wall; the outlet pipe is connected to the inlet of the primary water cooling device , so that the cracked high-temperature gas is rapidly cooled, and the coolant enters the primary coolant st...

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Abstract

The invention relates to a pilot test device for evaluation of hydrocarbon high-temperature cracking and cocking. The invention essentially consists of a raw material transport system, a gasfication system, a preheating system, a cracking system, a tail gas treatment system and a coke burning system. Production technology characteristics and parameters such as residence time, outlet temperature and cross-over temperature of the hydrocarbon high-temperature cracking process are taken into comprehensive consideration, and the device can completely simulate the actual production conditions. Having the advantages of simple structure, convenient performance and long time operation, the device is suitable for evaluation of effects of anti-coking and effects of pilot test amplification to various hydrocarbon cracking and cocking-inhibition technology, the problem of difficult amplification of the laboratory achievements can be effectively solved, thus providing the reliable pilot test device guarantee for the industrialization of all kinds of cocking-inhibition technologies.

Description

technical field [0001] The invention relates to a pilot plant for evaluation of high-temperature cracking and coking of hydrocarbons, which achieves the purpose of pilot-test evaluation of high-temperature cracking and coking of hydrocarbon raw materials by simulating actual process parameters of hydrocarbon high-temperature cracking production. Background technique [0002] The current method of producing olefins is mainly high-temperature thermal cracking of hydrocarbons. High-temperature pyrolysis of hydrocarbons will inevitably cause coking on the inner wall of the cracking furnace tube. Coking will reduce the heat transfer coefficient of the tube wall. In order to achieve the required cracking temperature, the temperature of the outer wall of the cracking furnace tube must be increased, which will greatly reduce the service life of the furnace tube. At the same time, coking also makes the inner diameter of the tube smaller, increases the fluid pressure drop, and reduce...

Claims

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Application Information

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IPC IPC(8): C10G9/00
Inventor 徐宏周建新张莉彭博
Owner EAST CHINA UNIV OF SCI & TECH
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