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Complete equipment and method for wet processing of sludge incineration offgas

A sludge incineration and wet treatment technology, which is applied in the directions of combined devices, separation methods, chemical instruments and methods, can solve the problems of backward sludge incineration tail gas treatment technology, poor sludge adaptability, and low treatment efficiency. To achieve the effect of good dust removal, low cost and high removal rate

Inactive Publication Date: 2012-12-19
BMEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the domestic sludge incineration tail gas treatment technology is relatively backward, the treatment efficiency is low, and it is difficult to meet the standards. Moreover, the equipment used for the purification of sludge tail gas that has been put into operation or contracted in my country is mostly imported from abroad as supporting facilities for the incineration system, which is expensive and does not affect domestic sewage. The adaptability of mud is not good

Method used

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  • Complete equipment and method for wet processing of sludge incineration offgas
  • Complete equipment and method for wet processing of sludge incineration offgas

Examples

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Effect test

Embodiment 1

[0031] like figure 1 As shown, a complete set of equipment for wet treatment of sludge incineration tail gas, including a dry electrostatic precipitator 1, a flue gas reheater 2, a bag filter 3 and a flue gas scrubber 4, the dry electrostatic precipitator 1 One end is connected to the sludge incineration exhaust gas pipeline, the other end of the dry electrostatic precipitator 1 is connected to the flue gas reheater 2 through the pipeline, and the right side wall of the flue gas reheater 2 near the bottom is connected to the bag filter 3 through the pipeline , the top of the bag filter 3 is connected to the compressed air tank 5 through a pipeline, the right side wall of the bag filter 3 near the top is connected to the flue gas scrubber 4 through a pipeline, and the right side wall of the flue gas scrubber 4 is connected to the top side through a pipeline The flue gas reheater 2 is connected, and the right side wall of the flue gas reheater 2 near the top is connected to the ...

Embodiment 2

[0047] Relying on the Shanghai Zhuyuan sludge treatment project, the complete set of equipment for wet treatment of sludge incineration tail gas mainly includes: dry electrostatic precipitator for dust removal; bag filter for dust, activated carbon particles and attached dioxins Removal of pollutants such as British and heavy metals; adsorption of organic matter (dioxin) and heavy metals by activated carbon; removal of acid gases (HCl, HF, SOx) by slaked lime and flue gas scrubber, including the following steps:

[0048] (1) The tail gas from sludge incineration (at a temperature of 230°C) first enters the dry electrostatic precipitator, and relies on the two systems of the corona electrode and the sedimentation electrode of the precipitator to absorb dust, and uses shock vibration to peel off the dust on the electrode. Most of the dust is removed, and general solid waste is produced, which is transported to the ash bin, and the dust removal efficiency can reach more than 99%. ...

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Abstract

The invention relates to complete equipment and a method for wet processing of sludge incineration offgas. The complete equipment comprises a dry electrostatic cleaner, a flue gas reheater, a bag-type dust collector and a flue gas washing tower, wherein one end of the dry electrostatic cleaner is connected with a sludge incineration offgas pipe, and the other end of the dry electrostatic cleaner is connected with the flue gas reheater through a pipe; the bag-type dust collector is connected with the right side wall, which is close to the bottom end, of the flue gas reheater through the pipe; the top of the bag-type dust collector is connected with a compressed air tank through the pipe; the flue gas washing tower is connected with the right side wall, which is close to the top, of the bag-type dust collector through the pipe; the flue gas reheater is connected with the right side wall, which is close to the top, of the flue gas washing tower through the pipe; an induced draft fan is connected with the right side wall, which is close to the top end of the flue gas reheater, of the gas heater through the pipe; and an online monitoring system is arranged on the side wall of a chimney. The complete equipment realizes equipment localization, and the automation and intellectualization of sludge offgas cleanup process control are realized.

Description

technical field [0001] The invention belongs to the field of solid waste treatment, and in particular relates to a complete device and method for wet treatment of sludge incineration tail gas. Background technique [0002] With the rapid development of my country's economy and the acceleration of urbanization, the amount of sludge generated in my country's cities is also increasing rapidly. In the field of sludge disposal, sludge drying and incineration is a technology recommended by the national environmental protection at present. It has a wide range of applications and is suitable for treating municipal sludge with different characteristics in my country. However, the tail gas produced in the sludge incineration process contains a large amount of pollutants, which will definitely cause serious harm to the environment. In order to ensure that the concentration of pollutants in the tail gas meets the increasingly stringent national emission standards, the tail gas must be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/60B01D53/68B01D53/06B01D50/00
Inventor 申维真高光宇刘玲徐兴华沙雪华张学阳刘旭任泰峰傅娆高大方刘霄
Owner BMEI
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