Process for preparing high-purity hydrogen through reforming coupling chemical looping of methane-containing combustible gas and application

Abstract

The invention discloses a process for preparing high-purity hydrogen through reforming coupling chemical looping of methane-containing combustible gas and an application. A reforming reactor, a hydrogen production reactor and a controller are included. The reforming reactor comprises a first gas inlet pipeline and a first gas exhaust pipeline, and the first gas exhaust pipeline is configured to be communicated with the reforming reactor and the hydrogen production reactor; the hydrogen production reactor comprises a second gas inlet pipeline and a second gas exhaust pipeline; the hydrogen production reactor contains an oxygen carrier, and the reforming reactor contains a reforming catalyst; the controller controls gas entering the hydrogen production reactor; the controller is used for switching the gas entering the hydrogen production reactor, so that two chemical reactions are completed in the hydrogen production reactor; or three chemical reactions are completed in the hydrogen production reactor, and the controller controls the reaction to be carried out circularly. The process has the characteristics of high hydrogen purity, low carbon in process, simplicity in operation, high efficiency and the like.

Description

technical field [0001] This article involves but is not limited to the field of clean energy and thermochemical hydrogen production, especially involves but is not limited to a hydrogen production process and application of methane-containing combustible gas. Background technique [0002] As a chemical raw material and energy carrier, hydrogen does not produce CO2 when used compared to other fuels. 2 Therefore, hydrogen energy is an important medium for achieving the goal of global "carbon neutrality" in the future. However, hydrogen usually exists in the environment in the form of compounds such as H 2 O or C n h m , the preparation of elemental hydrogen requires a large input of energy. In addition, hydrogen fuel cells, as an important hydrogen-using unit, generally require hydrogen purity to be ≥99.9%. Therefore, the efficient preparation of high-purity hydrogen technology has become a crucial step to realize the large-scale promotion and application of hydrogen energ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the existing problems such as complex preparation process of high-purity hydrogen and low product purity, this application provides a device and method for preparing high-purity hydrogen by coupling chemical chain reforming of combustible gas containing methane and a reforming catalyst for combustible gas containing methane. On the one hand, it can prepare High-purity hydrogen, on the other hand can achieve low-cost CO 2 Capture and heat recovery

Images