Breaking and pyrolyzing device for recycling sludge and breaking and pyrolyzing technology recycling sludgetherefor

Abstract

The invention relates to a breaking and pyrolyzing device for recycling sludge and a breaking and pyrolyzing technology for recycling the sludge. The technology comprises the following steps of: dedusting smoke generated by the burning of in a hearth by a cyclone separator, mixing with hot wind heated by an air preheating device to enter into a fan grinder, wherein the temperature of the mixed hot wind is 250-350DEG C, drying, breaking and pyrolyzing the sludge in the fan grinder, charging into a reburning region of the hearth throughby a static classifier to be burnt, and charging the pyrolysis-generated gas into the reburning region of the hearth through a combustible gas pipeline to form into a reducing atmosphere under the condition that the excess air coefficient is less than 1, so that restore the nitric oxide generated by a main burning region can be restored, and realize the reburning denitration can be realized. According to the deviceinvention, the recycling of the sludge can be realized, the volume size of the sludge can be greatly reduced in the manner of burning, all pathogens can be killed, and the pathogens are hardly available in the burnt residue by means of high-temperature treatment, and so that the problem of the foul smell of the sludge can be thoroughly solved. Meanwhile, according to the invention, the discharge of nitric oxide can be controlled.

Description

technical field [0001] The invention relates to a device and process for utilization of resources by crushing and pyrolysis of sludge, a device and process for simultaneously realizing sludge drying, crushing and pyrolysis in a fan mill and utilizing the dried sludge and the combustible gas produced by sludge pyrolysis Carry out reburning and denitrification resource utilization technology and equipment. Background technique [0002] In recent years, urban environmental pollution has become increasingly serious. In addition to vehicle emissions and industrial pollution, there is also solid waste pollution. Among them, sludge pollution is a large amount and difficult to handle. Sludge contains a large number of harmful substances such as germs, heavy metals, and polychlorinated biphenyls, and emits foul-smelling gases. If it is not handled properly, it will be very harmful. Since the current urban production and domestic sewage treatment mainly adopts the activated sludge me...

AI Technical Summary

Problems solved by technology

Since the current urban production and domestic sewage treatment mainly adopts the activated sludge method, it is inevitable to produce by-product sludge with a moisture content of more than 80%.

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