CN105855061A

CN105855061A - Interval spraying control technology for water saving of wet electrical dust precipitator

Info

Publication number: CN105855061A
Application number: CN201610212863.4A
Authority: CN
Inventors: 陈浙东
Original assignee: ZHEJIANG NANYUAN ENVIRONMENT ENGINEERING TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG NANYUAN ENVIRONMENT ENGINEERING TECHNOLOGY Co Ltd
Priority date: 2016-04-07
Filing date: 2016-04-07
Publication date: 2016-08-17

Abstract

The invention provides an interval spraying control technology for water saving of a wet electrical dust precipitator. The interval spraying control technology comprises the following steps of: (1) dividing polar plates or polar lines different in dirty degrees on the electrical dust precipitator into several rows, and dividing a spraying device into an initial spraying part, a circulating water spraying part and a clear water washing part; (2) carrying out initial spraying on the row of relatively dirty polar plates or polar lines, then carrying out circular spraying on the row of relatively dirty polar plates or polar lines, and finally washing the row of relatively dirty polar plates or polar lines by using clear water; (3) washing the row of polar plates or polar lines with moderate dirty degrees by using clear water after carrying out initial spraying on the row of polar plates or polar lines with moderate dirty degrees; and (4) washing the row of relatively clean polar plates or polar lines by using clear water. The interval spraying control technology has the beneficial effects that a spraying process is adopted in the light of degree of dust adhered to the polar plates or polar lines in the process of spraying the polar plates or polar lines of the wet electrical dust precipitator and comprises circulating water spraying; used water with a relatively high cleaning degree can be recycled for circular spraying; and water is greatly saved to a certain degree due to adoption of interval spraying, therefore, the technology effectively reduces water consumption in the dust removal process, the production cost is reduced, and meanwhile, the dust removal efficiency is improved.

Description

The technique that a kind of wet electrical dust precipitator water saving gap spray controls

Technical field

The present invention relates to technical field of industrial dust removal, spray particularly to a kind of wet electrical dust precipitator water saving gap Drench the technique controlled.

Background technology

Wet electrical dust precipitator is basically used in the techniques such as power plant's flue dust desulfurization, and the operation principle of wet-esp is Utilize high pressure dust charged；By the spray of water；The ash being accumulated on pole plate and polar curve is swept away.Reach The purpose of deashing.Dedusting is mainly by high voltage power supply.Deashing is mainly by water system.So water system is removed wet In be even more important.In this dust removal process, can consume substantial amounts of water, such as, certain million unit, water consumption exists About 40T/h, within one day, water consumption can be bigger, poses a big pressure to desulfurization；Improve cost simultaneously, also extend Go out the Similar Problems such as low, the time-consuming of efficiency.

Summary of the invention

The present invention is to avoid the weak point existing for above-mentioned prior art, it is provided that a kind of wet electrical dust precipitator joint The technique that water controls with gap spray.Utilize the method given by the present invention, can effectively reduce dust removal process In water consumption, reduce production cost, simultaneously also can improve efficiency of dust collection.

The technical scheme is that and be achieved in that:

The technique that a kind of wet electrical dust precipitator water saving gap spray controls, the device that described technique uses has wet Formula cleaner unit, cyclic water tank, water supply tank and discharge casing, those water tanks are connected by water pipe and pass through water valve Throttling or open-minded, technique comprises the following steps:

(1) pole plate or the polar curve of dirty degree different on electric cleaner are divided into number row, spray equipment is divided into the initial stage Spray, recirculated water spray and clear water rinse；

(2) pole plate or the polar curve of dirtier row being sprayed by initial stage spray Posterior circle, last clear water rinses；

(3) after the pole plate of moderate for dirty degree row or polar curve being sprayed by the initial stage, clear water rinses；

(4) pole plate or the polar curve of the relatively row of cleaning are rinsed through clear water；

Preferably, spray of described initial stage, recirculated water spray and clear water rinse and use period run.

Preferably, the described initial stage spray after sewage through precipitation after can enter recirculated water spray collecting-tank continue Continuous use.

Preferably, the sewage after described anterior clear water rinses can enter recirculated water spray after precipitation Collecting-tank is continuing with.

Compared with prior art, the method have the advantages that

The technique that the wet electrical dust precipitator water saving of the present invention controls with gap spray, to wet electrical dust precipitator During pole plate or polar curve spray, spray process, and spray can be used for the attached ash degree on pole plate or polar curve Pouring process includes that recirculated water sprays, and the water that after can using, cleannes are higher reclaims circulated sprinkling, gap again Spray is the most also greatly saved with water, so this technique effectively reduces the use in dust removal process The water yield, reduces production cost, also can improve efficiency of dust collection simultaneously.

Accompanying drawing explanation

Fig. 1 is the structural representation of wet electrical dust precipitator water saving gap spray control system.

Detailed description of the invention

The technique that a kind of wet electrical dust precipitator water saving gap spray of the present invention controls, is referred to accompanying drawing 1 Wet electrical dust precipitator water saving gap spray control system, the device that described technique uses have wet scrubber, Cyclic water tank, water supply tank and discharge casing, those water tanks are connected by water pipe and are throttled by water valve or open Logical, technique comprises the following steps:

(4) pole plate or the polar curve of the relatively row of cleaning are rinsed through clear water.

Spray of described initial stage, recirculated water spray and clear water rinse and use period run, because high pressure dust charge Electricity needs a process, when the dust of pole plate or polar curve runs up to a certain amount of, just can spray, anterior pole The dust of plate is more, and the dust of rear portion pole plate reduces successively, and on last pole plate, dust stratification is minimum, afterbody pole plate Use gap spray that water consumption can be greatly lowered.

Sewage after spray of described initial stage can enter the collecting-tank of recirculated water spray after precipitation and be continuing with, The collecting-tank of recirculated water spray can be according to the suitable draining of the dust concentration of water.

Sewage after the flushing of described clear water can enter the collecting-tank of recirculated water spray after precipitation and be continuing with.

In embodiment, anterior pole plate or polar curve that attachment dust is more are used recirculated water instead and are sprayed；Therefore this portion Dividing row's pole plate to be no need for volume exterior-applied liquid medicine, the most just can economize on water 20T/h.And dust less rearmost part pole plate is used Clear water rinses；Continuous flushing originally also makes cycle spray into, and also dependent on the change of boiler load； The control of phase in adjustment cycle property.Multiple rows of pole plate can be used into instead recirculated water to be rinsed.The water yield recycled It is the increase in；But recirculated water adds 20T/h than originally；But the water supplemented is the reduction of 20T/h.Beyond Suo The water of row is also few, simultaneously rear portion pole plate periodic intervals after rushing Xian outer draining be reduced to by original 40T/h 5T/h.The outer draining water yield is few, and the Design Treatment amount that water processes the most how.Thus reached energy-saving and emission-reduction effect Really.

The method step of cumulated volume invention understands, and the wet electrical dust precipitator water saving of present invention gap spray controls Technique, during to the pole plate of wet electrical dust precipitator or polar curve spray, can be on pole plate or polar curve How many attached ash degree uses the spray process that controls, and whole spray process includes that recirculated water sprays, and can will make Again reclaiming circulated sprinkling with the water that rear cleannes are higher, gap spray is the most also greatly saved With water, so this technique effectively reduces the water consumption during wet dust removal, reduce production cost, with Time be effectively increased efficiency of dust collection.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this Within bright protection domain.

Claims

1. the technique that a wet electrical dust precipitator water saving controls with gap spray, it is characterised in that comprise the following steps:

2. the technique that wet electrical dust precipitator water saving as claimed in claim 1 controls with gap spray, it is characterised in that Spray of described initial stage, recirculated water spray and clear water rinse and use period run.

3. the technique that wet electrical dust precipitator water saving as claimed in claim 1 or 2 controls with gap spray, its feature Being, the sewage after spray of described initial stage can enter the collecting-tank of recirculated water spray after precipitation and be continuing with.

4. the technique that wet electrical dust precipitator water saving as claimed in claim 1 or 2 controls with gap spray, its feature Being, the sewage after the flushing of described clear water can enter the collecting-tank of recirculated water spray after precipitation and be continuing with.