Biomass gasification circulating system driven by water pipe type condensing saturated steam boiler

Abstract

The invention provides a biomass gasification circulating system driven by a water pipe type condensing saturated steam boiler. The system comprises a water pipe type condensing saturated steam boilerand an atmospheric pressure fixed bed biomass gasifier, the boiler provides preheating heat energy, material transportation power and circulating cooling water for the biomass gasifier, and the biomass gasifier is used to realize atmospheric gasification of biomass. The system innovatively integrates the atmospheric pressure fixed bed biomass gasifier and the water pipe type condensing saturatedsteam boiler together to realize heat energy recycling, a gasification pipeline is designed as a circular pipeline structure, and a gasification agent and the circular gasification pipeline are integrated and designed together, so that the biomass gasification efficiency is improved. The whole system integrates boiler heat energy utilization, biomass preheating drying and gasification reaction, slag collection, gasification gas dust removal, oil removal and condensation together, and a traditional split-type gasification apparatus is changed, so that the biomass gasification efficiency and heat energy utilization efficiency are relatively high, and the overall layout and application are relatively convenient.

Description

technical field [0001] The invention relates to the technical fields of carbonaceous material gasification technology and thermal energy recycling technology, in particular to a biomass gasification circulation system driven by a water tube condensing saturated steam boiler, that is, a biomass gasification and boiler steam circulation system. Background technique [0002] The gasification of carbonaceous substances can produce combustible gases (hydrogen, carbon monoxide, etc.) for industrial use, and has broad application prospects in the field of modern chemical technology. Bed gasifiers, especially fixed-bed gasifiers with normal pressure, have a basic structure including a gasifier and an independently installed dust removal and purification device. The gasification agent is also input through the bottom of the gas output port. The gasification efficiency of this gasification furnace in the prior art is low, especially for the gasification efficiency of biomass. The exis...

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Problems solved by technology

[0002] The gasification of carbonaceous substances can produce combustible gases (hydrogen, carbon monoxide, etc.) for industrial use, and has broad application prospects in the field of modern chemical technology. Bed gasifiers, especially fixed-bed gasifiers with normal pressure, have a basic structure including a gasifier and an independently installed dust removal and purification device. The gasification agent is also input through the bottom of the gas output port. The gasification efficiency of this gasification furnace in the prior art is low, especially for the gasification efficiency of biomass. The existing patent CN202829965U typically describes this Gasifier structure and working method thereof in the prior art

In addition, the biomass gasifier in the technology does not fully consider the thermal energy recycling in the actual use process, because the application of biomass gasification is mostly concentrated in rural households or rural collective economies with a certain population, and biomass gasification is usually They are all accompanied by the use of steam boilers. In most cases, the gasification gas of biomass is directly used as boiler fuel or living fuel. In this case, it is necessary to consider energy recycling as much as possible, such as boilers and biomass gasification The issue of thermal energy recycling between furnaces, even recycling part of the thermal energy, is of great significance to the improvement of the overall efficiency, but the biomass gasifiers in the prior art not only generally have low gasification efficiency, but also do not take into The cyclical working relationship between the supporting thermal energy units has led to the fact that the biomass gasification device has not been substantially applied in the existing rural areas

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