Sludge catalytic combustion treatment system

Abstract

The invention discloses a sludge catalytic combustion treatment system. The sludge catalytic combustion treatment system comprises a sludge mechanical dehydration device, a fluidized bed incinerator, a coal economizer, a heat exchanger, a control valve and a bag-type dust collector, wherein the sludge mechanical dehydration device is connected with a sludge storage bin and is connected with the fluidized bed incinerator through a scraper machine; a catalyst area is arranged in the fluidized bed incinerator; a smoke outlet of the fluidized bed incinerator is connected with the coal economizer, and the coal economizer is connected with the heat exchanger; the control valve is externally connected with an air supply pipeline and is connected with the heat exchanger and an air heater; an air outlet of the heat exchanger and an air outlet of the air heater are connected with the fluidized bed incinerator through a converging pipeline; and a smoke outlet of the heat exchanger is connected with the bag-type dust collector. The system can obviously reduce the reaction temperature, has low dehydration requirements for sludge, can reduce the sludge treatment cost, can effectively treat smoke generated after sludge combustion and effectively utilizes the heat value of the sludge.

Description

technical field [0001] The invention relates to the technical field of sludge incineration, in particular to a sludge catalytic combustion treatment system. Background technique [0002] With the acceleration of urbanization, the amount of urban sewage treatment is increasing year by year, and the sludge production is also increasing sharply. Sewage sludge is a heterogeneous body composed of microorganisms and their metabolites, harmful organic substances and minerals, which contain many toxic and carcinogenic substances. There are also organic substances in the sludge, which can also be used as an energy raw material for heating or production of syngas, biomass and other fuels. [0003] In 2016, the "National Urban Sewage Treatment and Recycling Facilities Construction Plan" proposed to vigorously promote the disposal of sludge innocuity, stabilization and reduction, and the rate of innocuous treatment and disposal of urban sludge in prefecture-level cities and above shoul...

AI Technical Summary

Problems solved by technology

In traditional incinerators, since the combustion process requires high temperature conditions (temperature higher than 850°C), additional auxiliary fuel must be provided during the combustion process to maintain the temperature of the incinerator; in addition, the burned sludge usually requires Control its moisture content at 55%-65%, and this process needs to consume a large amount of heat energy, and the investment cost such as required equipment is too high

In addition, the traditional incinerator has a low utilization rate for the calorific value of sludge.

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