Sludge drying and carbonizing equipment and technology

Abstract

The invention discloses sludge drying and carbonizing equipment and technology. The equipment comprises a sludge concentration dewatering device, a low-temperature drying device, a sludge dry distillation and carbonization device, a heating system and an exhaust gas treatment system. A dehydration body, a low-temperature dehumidification dryer and a sludge carbonization main furnace are arranged sequentially in the feeding direction of a wet sludge material. Compared with an existing carbonization process, the treatment technology of the sludge of with moisture content of 95%-99.2% has the advantages as follows: a material obtained after the sludge is treated by the low-temperature drying device can directly enter the sludge dry distillation and carbonization device to be treated, a carbonization auxiliary furnace system is not needed to be added for drying and carbonizing the sludge, and accordingly, small floor area is occupied, the comprehensive investment cost is low, secondary harm to the environment is not easily produced, the energy use rate of the low-temperature drying device is higher, the problem of sludge sticking generated by a carbonization auxiliary furnace can be solved, and the equipment has higher market value and broader application fields.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to equipment and technology for sludge drying and carbonization. Background technique [0002] Sludge is an inevitable product of sewage treatment plants and sewage treatment. With the continuous advancement of my country's industrialization process, urban sewage plants and industrial enterprises produce a large amount of sludge. Statistics show that in 2016, my country's sludge production reached 40-50 million tons per year. Sludge can only enter the environment after proper treatment and disposal. Without proper disposal of sludge, it will directly cause secondary pollution to water bodies and the atmosphere, which not only reduces the effective treatment capacity of sewage treatment, but also poses a serious threat to the ecological environment and human activities. threaten. At present, my country's sludge treatment methods mainly include landfill, fermentation compo...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a sludge drying and carbonization equipment and process with low comprehensive cost, low environmental pollution and the ability to realize sludge resource recovery and utilization, so as to solve the defects of the traditional sludge disposal process proposed in the above-mentioned background technology question

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