Biomass hydrogen production in water vapour atmosphere and series fluidized bed apparatus system thereof

Abstract

The invention relates to a method for preparing hydrogen by biomass in water vapor atmosphere and a device system. The device comprises a biomass cracking fluid bed, an organic substance vapor reforming fluid bed, and an input pipeline and an output pipeline of the reforming fluid bed, wherein the bottom of the cracking fluid bed is communicated with a water vapor generator, a cracking tail gas delivery pipe is communicated with the input pipeline of the reforming fluid bed through a gas-solid separation device, the reforming fluid bed is also connected with a catalyst input pipeline, and a reforming tail gas output pipeline is connected with the gas-solid separation device and then connected with common series devices for condensation, purification, drying and hydrogen storage. When the hydrogen is prepared, the biomass is thermally cracked quickly at intermediate temperate to generate organic substance vapor, then the vapor is subjected to gas-solid separation and then flows into the reforming fluid bed to carry out water vapor reforming reaction to generate mixed gas of hydrogen, carbon dioxide and the like, and the mixed gas is purified to obtain pure hydrogen. The method uses the tandem fluid bed device system, and organically combines cracking of the biomass and hydrogen preparation of organic substance vapor reforming in the water vapor atmosphere, thereby simplifying the purification process, obtaining high hydrogen yield under the intermediate temperate condition, and improving energy efficiency greatly.

Description

technical field [0001] The invention relates to a technology for producing hydrogen from biomass, in particular to a method for producing hydrogen from biomass in a water vapor atmosphere and a series fluidized bed device system for realizing the method. Background technique [0002] Hydrogen is non-toxic, odorless, high calorific value and generates water after combustion. It is a very good clean energy and has been widely used in chemical, food, smelting, aviation, transportation and other fields. In particular, it can be used as a fuel cell Therefore, its good economic prospects and environmental advantages have attracted great attention. At present, more than 80% of the world's industrial hydrogen is produced through steam reforming of non-renewable fossil raw materials such as natural gas and coal, which consumes a lot of energy and needs to deal with a large amount of polluting tail gases such as sulfides and nitrides; water The electrolysis method is another mature h...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a hydrogen production method that can effectively improve the efficiency of hydrogen production, simplify the purification process and greatly reduce the production efficiency in view of the problems of low hydrogen production rate, complicated purification process and high energy consumption in the existing biomass hydrogen production technology. Energy consumption in the process of material hydrogen production, a method of biomass hydrogen production in a water vapor atmosphere to improve the comprehensive utilization of energy, and a series fluidized bed device system for realizing the method

Images