Resource utilization method of sludge based on thermal hydrolysis-pyrolysis carbonization

A technology of pyrolysis carbonization and thermal hydrolysis, applied in the fields of pyrolysis treatment of sludge, chemical instruments and methods, water/sludge/sewage treatment, etc. Higher problems, achieve the effect of high level of sludge energy utilization, low operating cost, and overcome excessive moisture content
CN108423959AInactive Publication Date: 2018-08-21浙江合泽环境科技有限公司
6 Cites 35 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
浙江合泽环境科技有限公司
Publication Date
2018-08-21
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a resource utilization method of sludge based on thermal hydrolysis-pyrolysis carbonization. The method includes the steps of: (1) transporting dehydrated sludge to a sludge preheater; (2) sending the preheated sludge into a sludge thermal hydrolysis reaction kettle; (3) subjecting the thermal hydrolysis product to solid-liquid separation to obtain thermal hydrolysis filtrate and a solid product; (4) carrying out natural heap drying, crushing, activation and granulation on the solid product successively, then conveying the product to a rotary controllable pyrolysis carbonization furnace by a spiral conveyer, and conducting high-temperature rapid pyrolysis to obtain biochar, tar and high-temperature waste gas, introducing the high-temperature waste gas into the sludge preheater, and subjecting the biochar to resource comprehensive utilization; and (5) subjecting the thermal hydrolysis filtrate to anaerobic fermentation, and using the generated biogas as the fuelof the pyrolysis carbonization furnace. The method provided by the invention overcomes the problems of high energy consumption of the sludge carbonization process and nonstandard resource utilizationmethod of sludge biochar in sewage treatment plants at present, and realizes reduction, stabilization, harmless and resource comprehensive utilization of sludge in sewage treatment plants.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of resource utilization of sewage treatment plant sludge, in particular to a comprehensive utilization method of thermal hydrolysis of sludge, carbonization of sludge pyrolysis and energy. Background technique

[0002] According to the statistics of the Ministry of Housing and Urban-Rural Development, as of the end of December 2016, a total of 2,248 sewage treatment plants have been built and operated in cities across the country, and the annual production of wet sludge (with a moisture content of 80%) in urban sewage treatment plants will reach more than 40 million tons. The amount of sludge generated is about 95,000 tons per day. With the improvement of sewage treatment capacity, the amount of sludge will increase significantly. It is predicted that by 2020, the annual amount of sludge generated by my country's urban sewage treatment plants will reach 60-90 million tons. The sludge of urban sewage treatment plants ha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More