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A sludge steam conditioning and high drying dehydration coupling incineration integrated device

A steam and high-dry technology, applied in water/sludge/sewage treatment, incinerator, sludge treatment, etc., can solve the problems of high operating cost and large investment, and achieve the reduction of investment cost and operating cost, large investment, The effect of high calorific value of sludge

Active Publication Date: 2022-01-07
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned problems such as large investment and high operating cost in the current sludge dehydration and incineration process, and provides a sludge steam conditioning high-drying dehydration coupling incineration integrated device, and its technical scheme is as follows:

Method used

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  • A sludge steam conditioning and high drying dehydration coupling incineration integrated device
  • A sludge steam conditioning and high drying dehydration coupling incineration integrated device

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Embodiment Construction

[0010] refer to figure 1 and figure 2 , an integrated method of sludge steam conditioning, high drying, dehydration, coupled incineration, which includes adding sludge with a moisture content of 80%, water and conditioning agent PAM1-2%tDS or PAC4-5%tDS into a mixing tank and stirring evenly , to obtain sludge with a moisture content of 90%, and then send the sludge with a moisture content of 90% to a steam heating tank for heating to 90-100°C, and then send the sludge with a moisture content of 90% at 90-100°C to high pressure The plate and frame filter press dehydrates under the pressure of 5.0MPa to obtain a sludge filter cake with a moisture content of 30-35%; finally, the sludge filter cake with a moisture content of 30-35% is crushed and sent to the fluidized bed for incineration Self-sustaining combustion in the furnace.

[0011] A sludge steam conditioning high-drying dehydration coupled incineration integrated device, which includes a mixing tank, a steam heating t...

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Abstract

The invention relates to an integrated device for sludge steam conditioning, high-dryness, dehydration, coupling and incineration, which belongs to the technical field of sludge dehydration and incineration. The material outlet of the mixing tank is connected to the material inlet of the steam heating tank, the material outlet of the steam heating tank is connected to the material inlet of the high-pressure plate and frame filter press, the gas outlet of the steam heating tank is connected to the hot gas inlet of the spray tower, and the The non-condensable gas outlet is connected to the blower inlet of the fluidized bed incinerator; the water outlet of the high-pressure plate and frame filter press is connected to the water inlet of the mixing tank; the fluidized bed incinerator is connected to the high-temperature air preheater, and the high-temperature air is preheated The flue gas outlet of the high-temperature air preheater is connected to the flue gas inlet of the waste heat boiler; the waste heat boiler is connected to the steam heating tank; the waste heat boiler is connected to the low-temperature air preheater, and the low-temperature air preheater is connected to the The high-temperature air preheater is connected to the blower; the flue gas outlet of the low-temperature air preheater is connected to the exhaust gas treatment system. The invention is used for sludge dehydration and incineration.

Description

technical field [0001] The invention belongs to the technical field of sludge dehydration and incineration, and in particular relates to an integrated device for sludge steam conditioning, high-dryness, dehydration, coupling and incineration. Background technique [0002] At present, most sewage treatment plants use stacked screw sludge dewatering machines or belt filter presses for sludge dehydration, and the moisture content of sludge after dehydration is about 80%. This kind of sludge has high water content and low calorific value. In order to adapt to the subsequent dry incineration treatment, it is necessary to further dehydrate the sludge with a water content of 80% to below 60%. In this way, more conditioning agents need to be added, such as PAM (1-5% tDS) or PAC (2-5% tDS), FeCl 3 (8-10% tDS) and a large amount of CaO (20-30% tDS) can be filtered through a plate and frame filter press to achieve a water content of about 60% in the dewatered sludge. This not only co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/143C02F11/147C02F11/122C02F11/13F23G7/00
CPCC02F11/143C02F11/147C02F11/122C02F11/13F23G7/001F23G2203/50F23G2209/12
Inventor 别如山
Owner HARBIN INST OF TECH
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