Household garbage percolation concentrated solution pyrolysis treatment system and dry salt recovery method

Abstract

The invention relates to the technical field of household garbage treatment, in particular to a household garbage percolation concentrated solution pyrolysis treatment system and a dry salt recovery method. The household garbage percolation concentrated solution pyrolysis treatment system comprises a garbage percolation concentrated solution pyrolysis oxidation solid-liquid separation device, a dry salt recovery device, an organic tail gas purification incineration device, a waste heat recovery device, a heating furnace, a purification discharge device and a plurality of explosion venting devices; part or all of pipelines comprise first pipeline sections and second pipeline sections; and each explosion venting device is arranged between the first pipeline section and the second pipeline section of one pipeline. When the inside of a vertical cylinder is exploded, gas is heated to expand instantly, the expanded gas and impact force act on a first explosion venting plate and a second explosion venting plate, the first explosion venting plate and the second explosion venting plate move relatively, then a first explosion venting pipeline and a second explosion venting pipeline are far away from each other, the gas is vented out, and the pipelines are prevented from exploding; and the service life of the whole device is prolonged.

Description

technical field [0001] The invention relates to the technical field of domestic waste treatment, in particular to a pyrolysis treatment system for concentrated liquid infiltration of domestic waste and a method for recovering dry salt. Background technique [0002] At present, it is inevitable that a large amount of landfill leachate will be produced in the landfill treatment of urban waste. The traditional process generally adopts the method of backfilling the landfill leachate after concentration. (including heavy metal salts), especially the leachate produced by landfills, can hardly be treated biochemically. The leachate is usually concentrated (either by membrane separation or by evaporation) and returned to the landfill, but this also creates an internal cycle of pollutants that makes the newly produced leachate more difficult to dispose of. The application publication number is CN109775786A, which discloses a high-salt wastewater incineration and desalination system ...

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Problems solved by technology

[0003] The present invention provides a pyrolysis treatment system for domestic waste percolation concentrated liquid and a dry salt recovery method to solve the problem that the existing domestic waste percolation concentrated liquid pyrolysis treatment system produces frequent small-scale explosion vibrations when processing waste

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