Monolithic catalyst reactor and application of monolithic catalyst reactor to synthesis gas preparation through natural gas reforming

Abstract

The invention relates to a monolithic catalyst reactor for synthesis gas preparation through natural gas reforming. The monolithic catalyst reactor consists of multilayer structures of monolithic catalysts, an oxygen distributor, a reactor and particle catalysts, wherein the particle catalysts are filled among the monolithic catalysts, the oxygen distributor and the reactor, the monolithic catalysts consist of at least one metal in honeycomb cordierite supported Ni and Rh or monolithic foam silicon carbide, the oxygen distributor is prepared from high-temperature oxidation-resistant alloy, the particle catalysts are obtained from at least one metal in Mg-Al spinel supported Ni and Rh, and the reactor is formed by a stainless steel reactor lined with high-temperature casting ceramics. The monolithic catalyst reactor can be used for converting natural gas, water vapor and oxygen / air into synthesis gas.

Description

Technical field [0001] The invention relates to an integral structure catalyst reactor for reforming natural gas to syngas. The reactor is suitable for the reaction of catalytically reforming methane to syngas with a monolithic catalyst. Background technique [0002] In the natural gas-oxygen / air catalytic reforming to syngas reaction, if the reaction system, especially the catalyst carrier, has poor heat transfer, it will easily lead to local areas, such as oxygen and methane gas flow contacting the reaction area to generate too much heat and heat dissipation is too slow and local The temperature is extremely high and hot spots are formed. Similarly, in the reaction zone of natural gas and water vapor, insufficient heat supply forms cold spots. The hot spots easily lead to catalyst deactivation, while the cold spots reduce the reaction activity. Traditional packed bed particle catalysts have poor performance in heat and mass transfer, while monolithic catalysts have advantages ...

AI Technical Summary

Problems solved by technology

[0002] In the natural gas-oxygen / air catalytic reforming synthesis gas reaction, if the heat transfer of the reaction system, especially the catalyst carrier, is poor, it is easy to cause local areas, such as oxygen and methane gas flow contacting the reaction area to generate too much heat and dissipate too slowly and locally The temperature is extremely high, forming a hot spot. Similarly, in the natural gas and water vapor reaction area, the heat supply is insufficient to form a cold spot. The hot spot easily leads to catalyst deactivation, and the cold spot reduces the reaction activity.

Traditional packed bed granular catalysts have poor performance in terms of heat and mass transfer, while integral structure catalysts have advantages in enhancing heat and mass transfer. There are many, and there is no reactor type for monolithic catalysts using oxygen distributors, so it is necessary to develop new catalytic reactors using monolithic catalysts for natural gas reforming to synthesis gas

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