Biomass charcoal-based catalyst coupled microwave effect catalytic reforming hydrogen production method

Abstract

The invention belongs to the field of biomass energy utilization, and particularly relates to a biomass charcoal-based catalyst coupled microwave effect catalytic reforming hydrogen production method which mainly comprises the steps of (1) conducting pretreatment, specifically, drying and crushing biomass to obtain a biomass raw material for later use; (2) conducting pyrolysis, specifically, putting a certain mass of biomass raw materials into a pyrolysis reactor, and completely reacting at the temperature of 450-550 DEG C in an inert atmosphere to obtain biomass pyrolytic carbon; (3) carrying out metal loading, specifically, carrying out acid pickling treatment, magnetic stirring, washing, filtering and drying on the biomass pyrolytic carbon, and then carrying out metal loading to obtain a carbon-based catalyst; and (4) carrying out catalytic reforming, specifically, carrying out catalytic reforming on the bio-oil model compound by utilizing a microwave reactor coupled carbon-based catalyst to obtain a hydrogen product. According to the invention, the bio-oil is subjected to catalytic reforming in a microwave coupling carbon-based catalyst manner, so that the reaction process is accelerated, the deactivation rate of the catalyst is reduced, and the hydrogen yield is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of biomass energy utilization, and in particular relates to a method for producing hydrogen by catalytic reforming of biomass carbon-based catalyst coupled with microwave effect. Background technique [0002] With the advancement of science and technology and economic development, today's world is facing increasing challenges of environmental protection. Biomass energy is 2 It has zero emission and is the only renewable energy that can be converted into liquid fuel. It has received extensive attention and research, and its clean and efficient utilization is of great significance. [0003] The production of hydrogen from biomass sources can effectively reduce the consumption of fossil fuels and the emission of pollutants. At present, there are two technical approaches to produce hydrogen from biomass: direct biomass gasification and bio-oil reforming. Compared with hydrogen production from biomass gasificat...

AI Technical Summary

Problems solved by technology

[0004] Existing methods for hydrogen production by bio-oil reforming, such as the Chinese invention patent "Electrocatalytic Steam Reforming Bio-oil Production Device and Method for Hydrogen", the publication number is CN101177239A, this invention mainly uses the resistance wire inside the reactor as The reaction provides heat to make bio-oil undergo electrocatalytic steam reforming reaction in a steam atmosphere and a medium temperature environment. The catalyst used in this reaction is a Ni-based catalyst or a composite metal oxide catalyst. This technology is conducive to improving the high reaction temperature, Serious catalyst deactivation and other problems, but due to the high power of the resistance furnace, the energy dissipation is too large, which greatly increases the economic cost

Another example is the Chinese invention patent "A Ni-Fe Bimetallic Multifunctional Catalyst for Hydrogen Production by Steam Reforming of Bio-oil", the publication number is CN110721690A. 2 o 3 As additive, CaO-ZrO 2 Modified Al 2 o 3 Preparation of a multifunctional hydrogen production catalyst as a carrier can increase the yield and selectivity of hydrogen, but the catalyst production steps are too complicated, the production cycle is long, and the coking problem of the catalyst has not been dealt with

Another example is the Chinese invention patent "A Renewable Catalyst for Hydrogen Production by Catalytic Reforming of Bio-oil and Its Preparation Method", the publication number is CN106064089A. The catalyst prepared by the invention using a microwave high-temperature furnace has high activity, high stability, and low carbon deposition. Strong ability and other advantages, but its microwave energy utilization efficiency is low and energy loss is large