Silicon carbide micro-channel reactor and application thereof in preparing low carbon olefin from hydrocarbons cracking

Abstract

The invention relates to a silicon carbide micro-channel reactor for preparing low carbon olefin from hydrocarbons cracking. The reactor is filled with an integral foam silicon carbide material to form the micro-channels, and is provided with a metal reactor housing outside the reactor, and a ceramic casting heat-insulation layer between the silicon carbide and the metal reactor, wherein the integral foam silicon carbide material has a micro-channel structure of three-dimensional foam. The silicon carbide micro-channel reactor is used for preparing the low carbon olefin from the hydrocarbons cracking; and can reinforce mixing of reacted materials, reduce temperature differences in the reactor and improve activity of the hydrocarbons cracking.

Description

technical field [0001] The patent of the present invention relates to the microchannel reactor technology using the foam channel of foamed silicon carbide as the reactor. The reactor is suitable for the reaction of producing light olefins by cracking hydrocarbons. Background technique [0002] The traditional anaerobic thermal cracking of hydrocarbons to produce low-carbon olefins is generally filled with quartz sand in the tube furnace, which has unsatisfactory heat conduction effect and relatively large pressure drop. In addition, due to the introduction of oxygen, the oxidative cracking of hydrocarbons realizes internal heat supply through partial oxidation of hydrocarbons, which has a high energy utilization rate and is conducive to the optimal utilization of heavy hydrocarbons. It is very promising, but the introduction of oxygen is also easy. Lead to local overheating, there is a safety hazard. Foamed silicon carbide material has excellent thermal conductivity, and i...

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Problems solved by technology

[0002] The traditional oxygen-free thermal cracking of hydrocarbons to produce low-carbon olefins is generally filled with quartz sand in the tube furnace, which has poor heat conduction effect and relatively large pressure drop.

In addition, due to the introduction of oxygen, the oxidative cracking of hydrocarbons realizes internal heat supply through partial oxidation of hydrocarbons, which has a high energy utilization rate and is conducive to the optimal utilization of heavy hydrocarbons. It is very promising, but the introduction of oxygen is also easy. Cause local overheating, there is a safety hazard

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