Waste heat recovery method for hot water coil of anaerobic tank system

Abstract

The invention relates to a waste heat recovery method for a hot water coil of an anaerobic tank system. The system a gas boiler system, a steam control platform, a pyrohydrolysis system, a biogas purification system, an oil extraction system, a medium-temperature hot water storage tank, an anaerobic tank system and a backflow water tank; through the arrangement of each temperature control device,the hot water passing through the heat exchange process in each of the pyrohydrolysis system, the biogas purification system and the oil extraction system can enter the medium-temperature hot water storage tank at the temperature approaching to the preset temperature in the medium-temperature hot water storage tank as much as possible through the corresponding temperature control device, and thenthe temperature of the mixed hot water entering the medium-temperature hot water storage tank can be adjusted through the heating and cooling devices of the medium-temperature hot water storage tank,thereby enabling the holding temperature of the mixed hot water therein to approach to the preset temperature range, and reducing the working time of the heating and cooling devices in the medium-temperature hot water storage tank; and the condition that the work process of the whole waste heat recovery circulating system is interrupted due to excessive working time of the heating and cooling devices of the medium-temperature hot water storage tank is avoided.

Description

technical field [0001] The invention relates to the technical field of environmental protection and renewable energy treatment, in particular to a waste heat recovery method used in hot water coils of an anaerobic tank system. Background technique [0002] With the progress of society and economic development, people's living standards continue to improve, resulting in more and more kitchen waste, whether it can be properly disposed of, will be directly related to food hygiene and safety and the health of the people; at the same time With the rapid development of my country's urban sewage treatment business, the amount of sludge generated is increasing day by day. Therefore, synergistic solutions for kitchen waste and sludge from sewage plants have gradually emerged in the prior art. [0003] Invention patent application "A Cooperative Treatment Method for Kitchen Waste and Sewage Plant Sludge" (Application Publication No. CN106964633A, Publication Date: 2017.07.21) disclose...

AI Technical Summary

Problems solved by technology

In the heating process of floor heating water, steam is often directly used for primary heat exchange, adding circulating water from the floor heating water tank, and then using circulating pumps to send it to the drying plant to heat biocarbon soil, and the steam after heat exchange becomes high-temperature hot water. It is often not properly utilized and discharged to the sewer, resulting in huge waste of heat energy and water resources

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