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Directional reactive catalysis thermal cracking method for direct converting low carbon alkane without need of oxygen

A low-carbon alkane and reaction technology, applied in the field of directional reaction catalytic thermal cracking, can solve problems such as difficulty in directly utilizing methane alone, waste of petroleum resources, etc., and achieve the effects of good product distribution and product quality, flexible raw materials, and specific functions.

Active Publication Date: 2005-11-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Nevertheless, the HCC or CPP ethylene technology using heavy oil as raw material still has obvious shortcomings: in the current HCC or CPP product distribution, the methane yield is about 11%, which wastes precious petroleum resources
Therefore, it is difficult to directly utilize methane alone

Method used

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Examples

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Comparison scheme
Effect test

Embodiment

[0045] This example shows that the method provided by the present invention can organically combine the catalytic pyrolysis process and the aromatization process of low-carbon alkanes, and directly embed low-carbon alkanes such as methane into other low-carbon alkanes under relatively mild conditions, thereby converting for BTX.

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PUM

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Abstract

A directional catalytic thermocracking reaction for non-oxygen direct conversion of low-carbon alkane includes reaction between the preheated heavy petroleum hydrocarbon and hot cracking catalyst from the first generator in the first reactor to obtain the oil gas and carbon deposited catalyst, stripping the catalyst, regenerating in the first generator, delivering the oil gas in the following product separation system, feeding low-carbon alkane in the second reactor, reacting on the aromatizing catalyst from the second regenerator to obtain arylhydrocarbon and H2, regenerating the catalyst, and separating arylhydrocarbon from H2.

Description

technical field [0001] The invention belongs to a directional reaction catalytic pyrolysis method for the oxygen-free direct conversion of low-carbon alkanes, more specifically, a process method combining the aromatization of low-carbon alkanes and catalytic pyrolysis of hydrocarbon oil. Background technique [0002] For the modern petrochemical industry, ethylene and propylene are the most important basic raw materials. 98% of the world's ethylene production methods are tube furnace steam cracking. Because the temperature of steam cracking is very high and the material requirements are very strict, the overall investment of the device is very high. Moreover, the furnace tube of the cracking furnace is easy to coke, so the raw material selection has to be light oil such as natural gas, naphtha or light diesel oil. raw materials, resulting in higher production costs. [0003] Since crude oil is getting heavier day by day, the sources of light raw materials for steam crackin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00
CPCY02P20/584
Inventor 吴青何鸣元张久顺许友好
Owner CHINA PETROLEUM & CHEM CORP
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