CN201506736U

CN201506736U - Ash and slag sewage treatment device

Info

Publication number: CN201506736U
Application number: CN2009202364717U
Authority: CN
Inventors: 谭卫国; 罗宇东; 万承军; 赵俊; 杨小华; 乔旭斌; 李刚; 姚友江; 柯心悦
Original assignee: Guangdong Electric Power Design Institute; Huaneng Power International Inc
Current assignee: China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd; Huaneng Power International Inc
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-06-16
Anticipated expiration: 2019-09-28

Abstract

The utility model discloses an ash and slag sewage treatment plant, including concentrated machine, the cooling water pool and the return water pond of establishing ties setting, wherein concentrated machine top is equipped with the overflow pipe that communicates cooling water pool, it still be equipped with the row's cinder notch that the concentrator bottom links to each other. The utility model has the advantages that: the power equipment and pipelines required by slag and sludge conveying are reduced, materials are saved, the equipment maintenance and replacement cost is reduced, the energy consumption of the system is low, and meanwhile, the quality of circulating water of the boiler ash and slag treatment system can be improved.

Description

A kind of lime-ash waste disposal plant

Technical field

The utility model relates to a kind of pulp water treatment unit, especially relates to the waste disposal plant in the cinder of electric power plant system.

Background technology

Usually boiler of power plant can produce the slag of a large amount of cigarette ash furnace bottoms, produce in dedusting and slag removal has cindery sewage in a large number very much, and this part sewage such as direct discharging can have a strong impact on environment, and increases the power plant water amount, therefore, all can adopt waste disposal plant to purify usually and reclaim this part water.Common lime-ash waste disposal plant comprises thickner, cooling basin and back pool, the cindery sewage that contains that produces in the boiler ash system is pumped into by pulp water and carries out concentration in the thickner, the slag mud that discharge the thickner bottom is carried the dragveyer of back boiler bottom by the slag stock pump, the clear water that overflow at the top is from flowing to the cooling basin internal cooling, enter back pool through cooled clear water, carry in the back boiler system by back water pump and recycle as recirculated water.

Because lime-ash sewage contains a large amount of particles, pulp water pump and transport pipe thereof take place to block and corrosion easily, and maintenance capacity is bigger, and equipment replacement is frequent, and expense is higher.In addition, the slag mud particle that discharge the thickner bottom is tiny, is difficult in the dragveyer to precipitate, and the overwhelming majority is sent back to again in the thickner with pulp water, causes multiple to handle, and causes the loss of the energy.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, lime-ash waste disposal plant that can reduce equipment loss and obviously cut down the consumption of energy.

Technical solution of the present utility model is: a kind of lime-ash waste disposal plant, comprise cooling basin and back pool that thickner, series connection are provided with, wherein the thickner top is provided with the upflow tube that is communicated with the cooling basin, and it also is provided with the deslagging pond that links to each other with described thickner bottom.

The slag mud of thickner bottom is directly sent in the deslagging pond of setting up, directly remove outward transport by instruments such as silt pumping cars, need not the loopback dragveyer, reduced facility investment, equipment loss and maintenance cost have been alleviated, obviously cut down the consumption of energy, the slag mud that particle is tiny is directly discharged outside the system, can also improve the water quality except that lime-ash recirculated water.

Also be provided with second thickner in parallel in this device with described thickner, and the bottom of this second thickner is communicated with described deslagging pond by pipeline, can strengthen the concentration ability, handling for slag mud provides reliable spare unit, helps long-term a large amount of lime-ash sewage of handling.

Also be provided with the distributor box that is communicated with described thickner and second thickner inlet respectively in this device, be convenient to adjust the running status of two thickners, play preallocated effect.

The utility model has the advantages that: reduced slag mud and carried power-equipment and the pipeline that needs, saved material, also reduced the expense that maintenance of the equipment is changed simultaneously, system energy consumption is little, can improve the circulating water quality of boiler ash treatment system simultaneously.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment;

1, dragveyer, 2, thickner, 3, the cooling basin, 4, back pool, 5, upflow tube, 6, the pulp water storehouse, 7, the pulp water pump, 8, the deslagging pond, 9, second thickner, 10, second upflow tube, 11, silt pumping car, 12, distributor box.

Embodiment

Embodiment:

Consult Fig. 1, a kind of lime-ash waste disposal plant, form by cooling basin 3 and back pool 4, deslagging pond 8 that distributor box 12, the thickner 1 that is arranged in parallel, second thickner 9, series connection are provided with, wherein the top of the thickner 1 and second thickner 9 is respectively equipped with the upflow tube 5 and second upflow tube 10 that is communicated with cooling basin 3, and the bottom of the thickner 1 and second thickner 9 is communicated with deslagging pond 8 by pipeline respectively.Distributor box 12 is communicated with the thickner 1 and second thickner 9 respectively.

The lime-ash waste disposal plant of present embodiment is arranged in the cinder-removing system of boiler, and its main sewage source is in the overflow sewage of dragveyer 1, and for simplicity, the miscellaneous part of cinder-removing system of boiler does not illustrate in the drawings.The overflow water of dragveyer 1 collects in the pulp water storehouse 6 of its bottom, send in the distributor box 12 by pulp water pump 7, distribute to thickner 2 respectively and second thickner 9 carries out concentration, the slag mud after the processing enters in the deslagging pond 8 from the thickner bottom, removes by silt pumping car 11 and sends outside.The clear water that the thickner top overflows enters in the cooling basin 3 by upflow tube 5 and 10 gravity flows of second upflow tube respectively, sends into after overcooling in the back pool 4, and the water purification after the recovery is recycled to removing in the lime-ash circulating water system by pump delivery.

With the 1000MW unit is example, usually dragveyer 1 is arranged on boiler bottom, the lime-ash waste disposal plant is arranged in the zone apart from 500 meters of boiler, use the treatment unit of the utility model embodiment, only equipment pipe just can be saved two slag stock pumps and carry with abrasion-proof pipe about 900 meters, can also deduct long-term slag mud and carry pipe-line maintenance and the replacement charge that causes, reduce the slag stock pump simultaneously and can reduce the about 30KW of energy consumption.And because the tiny slag mud of particle can not enter in the dragveyer, the clear water water quality after the recovery is more guaranteed.

Above-listed detailed description is specifying at one of the utility model possible embodiments, this embodiment is not in order to limit claim of the present utility model, allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.

Claims

1. a lime-ash waste disposal plant comprises cooling basin and back pool that thickner, series connection are provided with, and wherein the thickner top is provided with the upflow tube that is communicated with the cooling basin, it is characterized in that: it also is provided with the deslagging pond that links to each other with described thickner bottom.

2. a kind of lime-ash waste disposal plant according to claim 1 is characterized in that: also be provided with second thickner in parallel with described thickner in this device, and the bottom of this second thickner is communicated with described deslagging pond by pipeline.

3. a kind of lime-ash waste disposal plant according to claim 2 is characterized in that: also be provided with the distributor box that is communicated with described thickner and second thickner inlet respectively in this device.