Sludge drying pyrolysis device and method based on self pyrolysis product combustion heat supply

Abstract

The invention discloses a sludge drying pyrolysis device and method based on self pyrolysis product combustion heat supply. The device comprises a feeding assembly, a discharging assembly, an integrated treatment chamber, a heat exchange coil (7), a flue (12), a combustor (13) and a burner (14). A pyrolysis chamber (11) is arranged in the center of the integrated treatment chamber, the feeding assembly is arranged at the top of the integrated treatment chamber, and the discharging assembly is arranged at the lower end of the pyrolysis chamber; a condensation chamber (8) is arranged at the upper part of the integrated treatment chamber and is communicated with the pyrolysis chamber, and the heat exchange coil is arranged in the condensation chamber; a combustion chamber (10) is arranged below the integrated treatment chamber, the top of the combustion chamber and the bottom of the condensation chamber share a wall, the combustion chamber and the lower portion of the pyrolysis chamber share a wall, and a flue is arranged at the bottom of the combustion chamber; the combustor is arranged on the integrated treatment chamber and is connected with the condensation chamber and the burner; and the burner is arranged in the combustion chamber and faces the pyrolysis chamber. According to the invention, circulation and combustion of wet sludge pyrolysis products can be realized, the sludge can be reheated, and pyrolysis and drying treatment of the sludge can be integrally completed.

Description

technical field [0001] The invention relates to a solid waste treatment equipment and method, in particular to a sludge drying pyrolysis device and method based on self-pyrolysis product combustion for heat supply. Background technique [0002] With the continuous improvement of my country's urbanization level, the construction of sewage treatment facilities has developed rapidly, but a large amount of excess sludge is generated during the sewage treatment process. Due to the serious phenomenon of "heavy water and light mud" in the construction of sewage treatment plants, the sludge treatment process in most sewage treatment plants is still in the traditional modulation-dehydration mode. From the perspective of disposal methods, the proportion of sanitary landfill exceeds 50%. %. However, the sludge has great instability. Once the organic components in the sludge are corrupted and deteriorated, the landfill will cause serious secondary pollution to the environment; at the s...

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Problems solved by technology

[0003] In the existing wet sludge disposal process, the wet sludge is formed into dry sludge through pyrolysis and drying processes. Large area, high investment and operating costs

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