Sludge incineration flue gas treatment process

A technology for flue gas treatment and sludge incineration, which is applied in the direction of combustion product treatment, incinerator, combustion method, etc., and can solve the problems of high cost, low safety, and non-bottomed treatment

Inactive Publication Date: 2018-10-02
刘学琳
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This method has the problems of high

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  • Sludge incineration flue gas treatment process
  • Sludge incineration flue gas treatment process

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0031] see Figure 1-Figure 2 , the specific embodiment adopts the following technical scheme: a sludge incineration flue gas treatment process, which includes the following steps:

[0032] (a) The wet sludge in the wet sludge hopper 1 is lifted by the screw pump 2 to the direct pressure sludge deep dewatering process equipment composed of the direct pressure dehydrator 3, the dry sludge hopper 4 and the hoist 5 for dehydration;

[0033] (b) The sludge after deep dehydration is further promoted to the sludge dryer 6, and the residual heat of the flue gas is used to furthe...

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Abstract

The invention discloses a sludge incineration flue gas treatment process, and relates to the technical field of sludge and industrial waste water treatment. The process comprises following steps thatwet sludge is lifted to a direct pressing sludge deep water removal process device through a screw rod pump to be subjected to water removal; then, the sludge is lifted to a sludge drying machine; then, the sludge enters an incinerator to be subjected to preheating, drying and incineration; flue gas out of the incinerator passes through a heat exchanger, heat energy is absorbed, the sludge entersa water-film separator, large-particle dust is removed, and continuous cooling is achieved; flue gas passes through the water-film separator and then sequentially enters a condenser, a first-stage electrostatic precipitator and a second-stage electrostatic precipitator, and dust in the flue gas is reduced to 10 mg and below per cubic meter; and through a high-pressure draught fan, the flue gas ispressed into a biochemical reaction basin, gas in the biochemical reaction basin is pressed into a biological soil filter through a collection draught fan, and the flue gas passes through the biological soil filter for fugitive emission. Reduction, stabilization, harmlessness and resource needs of sludge disposal and treatment in a sewage treatment plant are met.

Description

technical field [0001] The invention relates to the technical field of treatment and disposal of municipal sludge and some industrial sludge, in particular to a flue gas treatment process of sludge incineration. Background technique [0002] The remaining sludge of urban sewage treatment plants and industrial waste sludge produced after industrial wastewater treatment produce a large amount of flue gas after deep dehydration and incineration. How to further treat the flue gas is the key to the deep dehydration and incineration of sludge. [0003] Before the sludge enters the sludge incinerator, the moisture content of the sludge is still about 50-60%, and a large amount of high-temperature flue gas will be produced during incineration. These flue gases contain water vapor, dust, tar, nitrogen oxides, sulfides, HCL, dioxins and other substances. In order to effectively deal with dust, most of them use bag filter, but the bag filter must be dry gas, so it consumes a lot of e...

Claims

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Application Information

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IPC IPC(8): F23G7/00F23J15/04F23J15/02
CPCF23G7/001F23G2209/12F23J15/006F23J15/02F23J15/022F23J15/04F23J2215/10F23J2215/20F23J2217/102F23J2217/50
Inventor 刘学琳
Owner 刘学琳
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