Low-calorific-value sludge harmless, volume-reductive and resourceful treatment technology and device

Abstract

The invention discloses a low-calorific-value sludge harmless, volume-reductive and resourceful treatment technology and device. The device comprises a sludge drying system, a plasma cyclone incinerator, a wind and smoke system, a smoke residual heat recycling system, a slag removal system, a dust collection system and a chimney, wherein a discharge outlet of the sludge drying system is connected with a feed inlet of the plasma cyclone incinerator, a gas outlet of the plasma cyclone incinerator is connected with a gas inlet of the smoke residual heat recycling system, a gas outlet of the smoke residual heat recycling system is connected with gas inlets of the sludge drying system and the dust collection system, a gas outlet of the sludge drying system is connected with the feed inlet of the plasma cyclone incinerator, a gas outlet of the dust collection system is connected with the chimney, a slag outlet of the plasma cyclone incinerator is connected with the slag removal system, and an ash outlet of the dust collection system is connected with the feed inlet of the plasma cyclone incinerator. The device disclosed by the invention can treat low-calorific-value sludge with low energy consumption, products can be industrially applied directly, zero emission of pollutants can be realized, and the environment-friendly level can be efficiently improved.

Description

Technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a low-calorific value sludge three-stage treatment process and device. Background technique [0002] In the process of sewage and wastewater treatment, a large amount of sludge will be produced. Some sludge has high organic matter content and higher calorific value after drying, which is convenient for incineration, such as sludge produced by domestic sewage treatment. Some sludges have high inorganic content, such as the sludge produced by metallurgical and electric power wastewater treatment. After drying, the calorific value is low, the energy consumption of direct incineration is high, the volume reduction is small, and the incineration product is solid slag, which is not conducive to resource utilization. [0003] For the treatment and disposal of sludge with high calorific value, mature technologies are currently available, such as the patent number "201110216120" "U...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the prior art cannot effectively treat low calorific value sludge, the present invention develops a low calorific value sludge tertiary treatment process and device, which can process low calorific value sludge with low energy consumption, and the processed products can be directly industrialized application, realized zero discharge of pollutants, and effectively improved the environmental protection level of the enterprise

Images