An anti-clogging sludge continuous thermal hydrolysis system

Abstract

The invention discloses an anti-clogging sludge continuous thermal hydrolysis system, which effectively solves the high-temperature carbonization and agglomeration of sludge in an anoxic environment by coupling partial oxidation technology and intermediate medium heat recovery to the continuous thermal hydrolysis system. Ensure that only clean fluid flows through the shell side of the heat exchanger, avoid frequent changes in the direction of sludge transport, and crush and grind the feed sludge through the grinding pump to prevent the sludge particles from agglomerating and compacting, effectively avoiding the problem of system blockage; at the same time, adopt Multi-level gradient utilization of system heat, and anaerobic biochemical biogas production technology, resource utilization of the filtrate, and at the same time, part of the filtrate is heat-exchanged and reflowed to reduce the viscosity of the sludge in the early stage, avoiding the use of fresh demineralized water, and improving the system While improving the efficiency of heat recycling, it reduces the consumption of system resources, effectively improves the economy of the system, and enhances the operation stability of the sludge continuous thermal hydrolysis system, which will help promote the large-scale application of this technology.

Description

technical field [0001] The invention relates to a sludge continuous thermal hydrolysis device, in particular to an anti-clogging sludge continuous thermal hydrolysis system. Background technique [0002] With the continuous construction of sewage treatment plants, my country's municipal sludge has also maintained a relatively high growth rate, and it is estimated that by 2020, the production volume will reach more than 60 million tons. In 2010, less than 10% of the sludge in my country was disposed of in sanitary landfill, land utilization, incineration or building material utilization, and most of the rest were not treated in a standardized manner. In the past five years, the sludge treatment and disposal rate has not exceeded 20%. Sludge contains toxic and harmful substances such as pathogens, heavy metals and persistent organic matter. Without effective treatment and disposal, it is very easy to cause secondary pollution to groundwater and soil, which brings serious safe...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the clogging problem caused by carbon deposition and coking in the sludge thermal hydrolysis system, and provide an anti-clogging sludge low-cost continuous thermal hydrolysis system, which is a kind of anti-clogging coking and economical improvement The system solution can be widely used in high-efficiency, low-cost and harmless treatment of urban and industrial sludge

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