System and method for treating haze by flue gas dried sludge

Abstract

The invention discloses a system and method for treating haze by flue gas dried sludge. A thermal power plant boiler is sequentially connected with a first electric gate valve, a first exhausting pipeline, a multi-pipe cyclone dust remover, a second exhausting pipeline, a first draught fan, a gas outlet and a sludge drying and granulation all-in-one device; a double-spiral quantitative sludge feeding machine arranged at the bottom of a buried sludge storage cabin is sequentially connected with a spiral conveyor, a feeding hole and the sludge drying and granulation all-in-one device; a gas outlet of the sludge drying and granulation all-in-one device is sequentially connected with a third exhausting pipeline, a second electric gate valve, a dust removing device, a desulfurization device, a second draught fan, a fourth exhausting pipeline and a chimney; and a discharging hole of the sludge drying and granulation all-in-one device is sequentially connected with a sealed type belt conveyor and a finished product cabin. By virtue of the system, the pollution load is reduced, and the dust removing and desulfurization effects are improved, and particularly, almost PM2.5, which is difficult to remove by existing dust removing equipment, is adsorbed by the sludge, so that the effect of managing the haze from the source is realized.

Description

technical field [0001] The invention relates to a system and a method for treating smog with flue gas drying sludge. Background technique [0002] In recent years, smog has occurred frequently in my country. Smog is a mixture of tiny water droplets and particles such as dust, sulfuric acid, nitric acid, and organic hydrocarbons in the air. Due to the small size of particulate matter (PM) in the smog, from 0.001 microns to 10 microns, the average diameter is about 1-2 microns, which can float in the air for a long time. Carriers of toxic substances such as heavy metals and polycyclic aromatic hydrocarbons, someone conducted a metagenomic study on PM10 and PM2.5 samples collected during the peak period of smog, and found 1,300 microorganisms in the smog, of which 3 microorganisms can cause Streptococcus pneumoniae , Aspergillus fumigatus and human adenovirus C and other diseases. Therefore, in addition to making the atmosphere turbid, blurring the field of vision and causin...

AI Technical Summary

Problems solved by technology

Practice has shown that "thermal drying" is the most effective method for deep sludge dehydration and volume reduction. However, thermal drying of sludge is a process of net energy consumption, and energy consumption usually accounts for 10% of the total cost of sludge treatment. More than 80, thus forming an "energy consumption bottleneck"

Images