Municipal sludge chain rolling suspension drying clean incineration equipment and incineration method

Abstract

The invention discloses municipal sludge chain rolling suspension drying clean incineration equipment and an incineration method, and the municipal sludge chain rolling suspension drying clean incineration equipment comprises more than two stages of horizontal sludge rod chain rolling suspension drying devices, plasma flame suspension incineration devices and waste gas purification devices which are communicated in sequence.Municipal sludge chain rolling suspension drying clean incineration can be integrated, the treatment process is simple, the heat utilization efficiency is high, the energy consumption is low, operation is continuous and reliable, the sludge treatment amount is large, the occupied area is small, and the operation cost is lower. The invention further provides the incineration method, the technology that wet sludge and hot air are rolled, hung, suspended and dried in a relatively closed space through a multi-stage rod chain is utilized, moisture in the sludge can be rapidly removed, the retention time of a sludge viscous area is effectively shortened, the sludge dewatering and drying efficiency is effectively improved, and the drying heat consumption is reduced.

Description

technical field [0001] The invention relates to an incineration device, in particular to a municipal sludge chain roller suspension drying clean incineration equipment and an incineration method. Background technique [0002] The moisture content of the primary (after sedimentation) sludge produced by the municipal sewage treatment plant in the process of treating urban domestic sewage including some industrial wastewater is 90-99%, and the moisture content of the dewatered sludge after dehydration by the belt filter press is about 80%. The moisture content of the dewatered sludge can be reduced to about 60% after being mixed with ridged materials and further dewatered by vacuum pressure filtration (the cost of deep dehydration is as high as 200-480 yuan / t). Generally, when the municipal sludge is dehydrated to a water content of 70%~84%, the sludge is in a plastic state, when it is dehydrated to a water content of 60%~65%, it is in a semi-solid state, and when it is dried t...

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Problems solved by technology

[0018] 13. Sludge-made adsorbent technology, which is currently in the laboratory stage, has obvious hidden dangers of high energy consumption and secondary pollution

[0019] 14. Sludge reduction and drying technologies mainly include convection heat transfer direct drying technology, conduction heat transfer indirect drying technology, radiation (infrared / microwave) drying technology and combined drying technology, but there are more or less large investment , Large floor area, high treatment cost, and difficult to deal with exhaust gas odor, etc.

[0020] 15. Sludge incineration technology, mainly including sludge atomization incineration technology, vertical multi-stage incineration technology, boiling incineration / fluidized bed incineration technology, rotary kiln incineration technology, grate incineration technology and plasma torch sludge waste incineration technology, etc., but there are still problems such as low burnout rate of sludge and waste residue, complex process, high power consumption and high energy consumption in operation, and difficult to clean and treat the peculiar smell in the exhaust gas, which is prone to secondary pollution.

[0021] To sum up, although the harmless, or reduction, or resource, or energy-based treatment technologies of municipal sludge in my country have achieved rapid development, they are still not enough to effectively solve the large amount of sludge produced by sewage treatment plants in our country. As a result, at least 70% of the sludge has not been properly treated. In particular, there is no reliable technical solution to solve the pollution caused by dripping, dumping, landfilling, or random stacking of a large amount of wet sludge. and repollution issues

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