Tobacco stem waste gasification system device and production technology thereof

Abstract

The invention discloses a tobacco stem waste gasification system device capable of continuously operating without secondary pollution. The device comprises a raw material bin, the lower end of the raw material bin is provided with a belt conveyor, the tail end of the belt conveyor is provided with a material lifting machine and is erected on the top of a hopper of the material lifting machine, a discharge outlet of the material lifting machine is connected with a gasification furnace through a pipeline, a fuel preheating pipe is arranged above the pipeline, the upper end of a feed inlet of the gasification furnace is provided with a safe discharge pipe, the other three sides of the top of the gasification furnace are provided with gasification furnace operation ports, the center of the top of the gasification furnace is provided with a kick-out device, the lower end of the kick-out device is provided with parallel switch-plates, the lower end surfaces of the switch-plates are vertically fixed with target pins, the lower parts of the target pins are a gasification cavity of the gasification furnace, the lower part of the gasification cavity is provided with a tipping grate which is vertical to the axial surface of the gasification furnace, the center of the lower part of the tipping grate is provided with a secondary tar cracking bucket, and the top end of the secondary tar cracking bucket is connected with a first dust remover and an air inlet on one side of the upper end of the first dust remover.

Description

technical field [0001] The invention relates to a system device for converting biomass energy into steam and its production process, in particular to a tobacco stem waste gasification system device and its production process. Background technique [0002] Since 2001, my country's biomass gasification technology has entered the promotion stage. Household single biomass gasifiers, biomass gasification centralized gas supply devices and processes have been widely used, and their operation forms are all intermittent. Although the biomass fluidized bed power plant can operate continuously, it has very strict requirements on the uniformity of biomass solid fuel particles. The particle size of the tobacco stem is not only uneven, but also the volume after drying in the thermochemical reaction of biomass not only does not shrink but increases by more than two times. With the existing fixed-bed biomass gasification device, the expansion coefficient of the tobacco stem in the thermoc...

AI Technical Summary

Problems solved by technology

With the existing fixed-bed biomass gasification device, the expansion coefficient of the tobacco stem in the thermochemical reaction of the gasification furnace is large, resulting in extremely unstable thermal conditions of the fuel drying layer, carbonization layer, oxidation layer, and reduction layer, resulting in the There will be threading, bridging, and layer perforation at any time. The gas after gasification is not only impure but also has high oxygen content. The operation time is not only short but also labor-intensive.

At present, the international and domestic continuously operating biomass gasification devices and processes are equipped with tar removal equipment, which reduces the gas from >350° to <35°, which wastes gas, carries heat energy and brings secondary water pollution

The characteristics of threshing and redrying enterprises determine the high concentration of tobacco stem waste. Long-term natural incineration not only causes energy waste but also brings serious environmental pollution.

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