Environmental protection and harmless comprehensive utilization system of straw

Abstract

The invention discloses an environment-friendly and harmless comprehensive utilization system of straws. The environment-friendly and harmless comprehensive utilization system comprises a special boiler for straws, a water cutting type flue gas purification combination tank, a CO2 precipitation shed and a heat exchange set, wherein a fire grate in the special boiler for straws can be ascended and descended along the axis of a furnace body; the water cutting type flue gas purification combination tank is internally provided with a plurality of purification spaces; and a CO2 gas output pipeline is arranged at the bottom in the CO2 precipitation shed. A flue gas outlet of the special boiler for straws is connected with a flue gas inlet of the water cutting type flue gas purification combination tank through a pipeline; a water inlet and a water outlet of the special boiler for straws are connected with the heat exchange set through pipelines; and second check valves on tank body walls of two purification tanks of the water cutting type flue gas purification combination tank are connected with an end plate gas inlet at the bottom of an end plate at one end of the CO2 precipitation shed through pipelines. By adopting the environment-friendly and harmless comprehensive utilization system of the straws, the bundled straws can be used as fuel and generated flue gas can be continuously purified; and discharged CO2 gas can be recycled and generated heat is utilized after heat exchange.

Description

technical field [0001] The invention relates to a comprehensive utilization technology using straw as fuel, in particular to an environment-friendly and harmless comprehensive utilization system of straw. Background technique [0002] Every year after the autumn harvest, a large amount of straw will be produced in the countryside. How to deal with and utilize the straw scientifically and rationally has become an important problem that needs to be solved urgently. Burning straw directly is not only a waste of resources, but also causes serious environmental pollution; straw is used as raw material for boiler heating, and so far there is no special boiler, which needs to be compressed and cut into pieces before use. This undoubtedly increases the cost of fuel based on straw, and the large amount of soot generated directly by straw as fuel is also difficult to purify. In addition, the burning of a large amount of straw produces a large amount of CO 2 The direct emission of gas...

AI Technical Summary

Problems solved by technology

Burning straw directly is not only a waste of resources, but also causes serious environmental pollution; straw is used as raw material for boiler heating, and so far there is no special boiler, which needs to be compressed and cut into pieces before use. This undoubtedly increases the cost of fuel based on straw, and the large amount of soot generated directly by straw as fuel is also difficult to purify. In addition, the burning of a large amount of straw produces a large amount of CO 2 Direct emissions of gases into the environment also contribute to the greenhouse effect of the atmosphere

So far, there has not been a complete, effective and environmentally friendly comprehensive utilization system for straw treatment.

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