Method for preparing synthetic gas by three-phase type biomass pyrolysis-gasification-catalytic reforming

Abstract

The invention belongs to the technical field of energy chemical industry. The process for preparing synthetic gas by biomass pyrolysis and gasification is divided into three steps of biomass low-temperature pyrolysis, coke or semi-coke high-temperature gasification and crude synthetic gas / tar catalytic reforming. The three reaction steps are successively and continuously carried out in three relatively independent spaces of an upper pyrolysis hearth, a lower gasification hearth and a catalyst bed inside the same gasification reaction device so as to finally obtain the high-quality synthetic gas. The method provided by the invention has high carbon conversion rate, produces no secondary pollution and is simple to realize. In addition, required biomass is rich in reserves and can be regenerated, thus realizing integrated sustainable utilization of resource, energy and environment.

Description

technical field

[0001] The invention belongs to the technical field of biomass energy chemical industry, and in particular relates to a technology and method for producing synthesis gas by three-stage biomass pyrolysis gasification-catalytic reforming. technical background

[0002] With the improvement of human living standards, people rely more and more on energy. However, due to the non-renewability of fossil fuels and their limited reserves, fossil energy has been increasingly exhausted, and the environmental crisis has become increasingly obvious. Today, seeking and developing new energy sources, especially renewable energy sources with little environmental pollution, has attracted global attention. Biomass is a variety of organisms formed through photosynthesis. It is directly or indirectly derived from the photosynthesis of green plants and can be converted into conventional solid, liquid and gaseous fuels. It is widely distributed and available in large quantities. It...

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