Sludge pyrolysis carbonization technique and device

Abstract

The invention discloses a sludge pyrolysis carbonization technique and device. The technique comprises the following steps: sludge is pressed by a press, pulverized by a pulverizer, mixed by a mixer, dried in an internal heating rotary kiln drying machine, sent into a storage bin, and sent into a pyrolysis carbonization furnace; the sludge is subjected to pyrolysis carbonization in the pyrolysis carbonization furnace; the product solid carbon mixture is sent out of the system, and the products vapor and pyrolytic gas enter a separation purification tower to be separated and purified; the purified combustible gas is sent into a combustor and combusted into an internal heating rotary kiln drying machine delivery heat source, and the purified heavy components are sent into the mixture and mixed with the sludge to perform secondary pyrolysis; the flue gas generated by the heating furnace is discharged into a hot-blast furnace to perform secondary ablation; and the exhaust generated by the whole device is discharged by an outlet I of the internal heating rotary kiln drying machine, and is treated and discharged after reaching the standard. The device has the advantages of simple production technique, stable product state and no secondary pollution, and implements the reduction, harmless treatment and recycling of sludge treatment.

Description

technical field [0001] The invention relates to a sludge pyrolysis carbonization treatment process method and its device, in particular to a pyrolysis carbonization process and its device to realize sludge reduction, harmlessness and resource utilization in sewage plants. Background technique [0002] With the economic development and the strengthening of people's awareness of environmental protection, the urban sewage treatment business continues to develop, the total water treatment volume and treatment degree of sewage plants will continue to expand and improve, and the amount of sludge produced will also increase. At present, sludge is mainly concentrated, adjusted, dehydrated, stabilized, dried or incinerated. Mature sludge stabilization processes commonly used at home and abroad include: anaerobic digestion, aerobic digestion, heat treatment, heating and drying, and alkali stabilization; commonly used sludge disposal methods are land use, incineration, sanitary landfil...

AI Technical Summary

Problems solved by technology

The investment and operating costs of sludge treatment and disposal are relatively high. If not disposed of properly, it will cause "secondary pollution". This has become a difficult problem in the field of environmental protection and has attracted much attention.

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