Deodorization and purification treatment system of biological sludge pyrolysis synthesis gas

Abstract

The invention relates to a deodorization and purification treatment system of biological sludge pyrolysis synthesis gas. The system comprises a cyclone plate water spraying tower module, a spraying reaction acid removal tower module, a solar energy-rotary wheel dehumidification module, a sludge base activated carbon absorption module and a pulse bag type dust remover module in sequential connection, wherein the cyclone plate water spraying tower module comprises a pyrolysis tail gas inlet, a cyclone plate, a filling material layer, a circulation water pump, a water supplementing opening, a first sedimentation pool, a clean water spray head, a first screen defogging device and a sludge outlet; the spraying reaction acid removal tower module comprises a cyclone device, an atomization device, a two-stage filling material layer, a metering circulation pump, a second sedimentation pool, a liquid supplementing pipe and a second screen defogging device; the sludge base activated carbon absorption module consists of a solar heat collector, an electric heater, a sludge base activated carbon rotary wheel, a photocatalysis waste gas treatment device and the like. The deodorization and purification treatment system has the advantages that the structure is reasonable; fetor gas in the pyrolysis tail gas can be controlled in a national standard range; in addition, the pyrolysis synthesis gas is purified; the synthesis gas fuel gas quality is improved.

Description

technical field [0001] The invention relates to a synthetic gas deodorization and purification treatment system produced by pyrolysis of biological sludge, in particular to the combination of various methods for efficient removal of acid gas, deodorization, drying, removal of impurities and purification of sludge pyrolysis gas. Purification programs for other pollutants. Background technique [0002] Sludge pyrolysis technology is to dry the sludge to a certain temperature (<500°C) by anaerobic heating, and convert the sludge into four by-products of oil, water, non-condensable gas (NGC) and charcoal through thermal decomposition, so that not only The production of dioxin can be reduced, and most of the heavy metals in the sludge are fixed in the residue, and the three-phase by-products can be recycled and reused, which has high utilization value. [0003] From many researchers' studies on sludge pyrolysis, it can be seen that sludge pyrolysis has many advantages. Durin...

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Problems solved by technology

[0009] In order to overcome the deficiencies of the existing sludge pyrolysis process, such as tail gas odor, high impurity content of synthesis gas, and poor applicability, the present invention provides a method with a reasonable structure, which can control the malodorous gas in the pyrolysis tail gas within the range of national standards. , and purify and purify the pyrolysis synthesis gas to improve the quality of the synthesis gas. The deodorization and purification treatment system of the biological sludge pyrolysis synthesis gas has the functions of cooling, dust removal and deodorization, and can also purify the synthesis gas and improve the quality of the synthesis gas. Calorific value of syngas

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