CN108815964A - A kind of boiler smoke dust separation separator, dust separation system, system for desulfuration and denitration and method - Google Patents

A kind of boiler smoke dust separation separator, dust separation system, system for desulfuration and denitration and method Download PDF

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Publication number
CN108815964A
CN108815964A CN201810668991.9A CN201810668991A CN108815964A CN 108815964 A CN108815964 A CN 108815964A CN 201810668991 A CN201810668991 A CN 201810668991A CN 108815964 A CN108815964 A CN 108815964A
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China
Prior art keywords
separator
controlling valve
self controlling
air flue
separation
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CN201810668991.9A
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Chinese (zh)
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CN108815964B (en
Inventor
周军
梁坤
方刚
吴雷
颜冬青
李增林
邢相栋
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20Combinations of devices covered by groups B01D45/00 and B01D46/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/60Simultaneously removing sulfur oxides and nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

The present invention discloses a kind of boiler smoke dust separation separator, dust separation system, system for desulfuration and denitration and method, and present invention dust separation suitable for boiler smoke purifies.The method of the present invention adjusts Self controlling valve unlatching and closure to realize the switching of pipeline, to complete separation dedusting and the blowback purification function of separator by program.Separator includes air flue, metal corrugated plate and metallic sieve.Method of the present invention separates dust and removes dust and gas, and using gas " regeneration " device clean after purification, without additional energy and substance, it is energy-efficient, the not only technical problem that effective solution molecule is separated with gas difficulty, and process automatically controls, securely and reliably.

Description

A kind of boiler smoke dust separation separator, dust separation system, desulphurization denitration system System and method
Technical field
The invention belongs to environmental technology fields, and in particular to a kind of boiler smoke dust separation separator, dust separation System, system for desulfuration and denitration and method.
Background technique
Contain a large amount of dust, sulfide, nitride in boiler smoke, discharge, which purifies flue gas not up to standard, will cause atmosphere One of the main reason for polluting, and causing haze in recent years.Existing boiler flue gas purification technique mainly includes dedusting and desulfurization Denitration, and common dedusting technology has cyclone dust removal and bag-type dust.
Cyclone separator is widely used a kind of deduster, simple, the cheap, operation and maintenance with structure Convenience, the gas that high temperature, big granularity, high granule density can be handled, but presence is bad to small size particle treatment effect, after purification The deficiencies of gas temperature is higher.Bag filter is using more dedusting method in current flue gas ash removal, although having structure It is simple and convenient to operate, the advantages such as use cost is low, but with the extension of use time, flue dust is easy blocking cloth bag, causes system Pressure increases, and improves wind speed of dust removal, increases energy loss, reduces efficiency of dust collection, and repairs more difficult.
Summary of the invention
To solve problems of the prior art.The purpose of the present invention is to provide a kind of boiler smoke dust separations point From device, dust separation system, system for desulfuration and denitration and method, present invention dust suitable for boiler smoke dust separation is net Change, the method for the present invention adjusts Self controlling valve unlatching by program and is closed the switching to realize pipeline, with the separation of finishing device Dedusting and blowback purification function.
The technical solution adopted by the present invention enters as follows:
A kind of boiler smoke dust separation separator, including the first air flue, the second air flue, two side plates and several gold Belong to corrugated plating;
Face setting before and after two side plates, from the left side of two side plates to the right, several metal corrugated plates are parallel to each other And be arranged at intervals between two side plates, the front-rear side walls of all metal corrugated plates are fixedly connected with two side plates respectively, from two Waveform channel is formed between two adjacent metal corrugated plates at the lower part of a side plate to top;
Metallic sieve is provided between two adjacent metal corrugated plates;
First air flue and the second air flue are connect with the upper and lower part of two side plates respectively, the first air flue and metal corrugated plate Between formed waveform channel upper end connection, the lower end in the waveform channel formed between the second air flue and metal corrugated plate Connection.
Metallic sieve includes the metallic sieve of several segments single layer, and two adjacent gold are arranged in metallic sieve entirety fold-line-shaped Belong between corrugated plating, is welded between the both ends that each section of metallic sieve and metal corrugated plate.
The height of the top in the waveform channel formed between two neighboring metal corrugated plate to lower part, metallic sieve is The 1/3 of waveform channel height.
The distance between two neighboring metal corrugated plate is not more than 3mm, and metallic sieve is 200 meshes.
A kind of boiler smoke dust separation separation system, including a cyclone separator, secondary cyclone separator, several Separator described in Self controlling valve, several pressure transmitters and two;Two separators are respectively the first separator With the second separator;First separator and the second separator can be connect with boiler desulfurization denitrating system;
The outlet of cyclone separator connects with first the second air flue of separator and second the second air flue of separator It connects;
The outlet of secondary cyclone separator connects with first the second air flue of separator and second the second air flue of separator It connects;
First the second air flue of separator and second the second air flue of separator connect with the entrance of secondary cyclone separator It connects;
First the first air flue of separator and second the first air flue of separator can be with the entrances of system for desulfuration and denitration Connection;
First the first air flue of separator and second the first air flue of separator can be with the outlets of system for desulfuration and denitration Connection;
Second air flue of the first separator and the second air flue of the second separator are respectively arranged with first pressure pick-up Device and second pressure transmitter;
On pipeline between first the first air flue of separator and the outlet of system for desulfuration and denitration and and system for desulfuration and denitration Entrance between pipeline on the first Self controlling valve and the second Self controlling valve is respectively set;
First the second air flue of separator is provided with third Self controlling valve and the 4th Self controlling valve parallel with one another, and third is certainly Control valve is arranged on the pipeline between first the second air flue of separator and secondary cyclone separator inlet;4th Self controlling valve It is separately connected by pipeline and the outlet of secondary cyclone separator and the outlet of a cyclone separator;
On pipeline between second the first air flue of separator and the entrance of system for desulfuration and denitration and and system for desulfuration and denitration Outlet between pipeline on the 5th Self controlling valve and the 6th Self controlling valve 10-6 is respectively set;
Second the second air flue of separator is provided with the 7th Self controlling valve and the 8th Self controlling valve parallel with one another, and the 7th certainly Control valve is arranged on the pipeline between second the second air flue of separator and secondary cyclone separator inlet;8th Self controlling valve It is separately connected by pipeline and the outlet of secondary cyclone separator and the outlet of a cyclone separator;
First Self controlling valve, third Self controlling valve, the 5th Self controlling valve and the 8th Self controlling valve with first pressure pick-up Device connection;
Second Self controlling valve, the 4th Self controlling valve, the 6th Self controlling valve and the 7th Self controlling valve with second pressure pick-up Device connection.
A kind of boiler desulfurization denitrating system, boiler desulfurization denitrating system are provided with the separation system.
A kind of boiler smoke dust-removing and purifying method, based on the boiler smoke dust separation separation system, including it is as follows Step:
Step 1, the 8th Self controlling valve and the 5th Self controlling valve are opened, remaining Self controlling valve is turned off, by boiler smoke It is passed through a cyclone separator and is dusted separation;The boiler smoke after a cyclone separator separates is separated from second again The second air flue of device is passed through the second separator and is dusted separation, and when dedusting separates, the solid particle in boiler smoke is golden Belong to the screen to filtrate, it is de- in desulfurization except dust and gas escapes and enter from second the first air flue of separator 1 entrance of system for desulfuration and denitration In nitre system, except in dust and gas nitrogen and element sulphur be removed, obtain clean gas, clean gas is arranged from the outlet of system for desulfuration and denitration Out;
Step 2, when the pressure of second pressure transmitters sense to second the second air flue of separator exceeds preset range value When, the 8th Self controlling valve and the 5th Self controlling valve receive the detection signal of second pressure transmitter, and close the 8th Self controlling valve With the 5th Self controlling valve, meanwhile, the 4th Self controlling valve and the second Self controlling valve are opened, the boiler after a cyclone separator separation Flue gas is dusted separation by the first separator;Then the 6th Self controlling valve and the 7th Self controlling valve are opened, desulphurization denitration The cleaning gas of the outlet discharge of system enters the second separator from second the first air flue of separator, to the second separator gold The solid particle belonged on sieve carries out blowback, is detached from solid particle from metallic sieve, then again from the second separator the Two air flues enter secondary cyclone separator, and secondary cyclone separator separates the ash-laden gas for carrying blowback solid particle, Through secondary cyclone separator separation after gas again with after the gas mixing of a Cyclone outlet through the 4th Self controlling valve It is dusted separation into the first separator, when second pressure transmitters sense to the pressure of second the second air flue of separator When reaching preset range value, the 6th Self controlling valve and the 7th Self controlling valve are closed;
Step 3, when the pressure of first pressure transmitters sense to first the second air flue of separator exceeds preset range value When, the 4th Self controlling valve and the second Self controlling valve receive the detection signal of first pressure transmitter, and close the 4th Self controlling valve With the second Self controlling valve, meanwhile, the 8th Self controlling valve and the 5th Self controlling valve are opened, a cyclone separator and secondary cyclone point Separation is dusted by the second separator from the mixed gas after device separation;Then the first Self controlling valve and third internally piloted valve Door is opened, and the cleaning gas of the outlet discharge of system for desulfuration and denitration enters the first separator from first the first air flue of separator, Blowback is carried out to the solid particle on the first separator metallic sieve, is detached from solid particle from metallic sieve, then again Enter secondary cyclone separator from first the second air flue of separator, secondary cyclone separator is to carrying blowback solid particle Ash-laden gas is separated, the clean gas gas mixing with a Cyclone outlet again after the separation of secondary cyclone separator Enter the second separator by third Self controlling valve and be dusted separation, when first pressure transmitters sense to the first separation dress When setting the pressure of the second air flue and reaching preset range value, the first Self controlling valve and third Self controlling valve are closed;
Step 4, step 2 is repeated to step 3, realizes the lasting separation to dust in boiler smoke.
The present invention has the advantages that:
Boiler smoke dust separation separator of the invention passes through the sieve being arranged in metal corrugated plate and corrugated plating Little particle dust in separating flue, the dust isolated can be stopped to filter down by metallic sieve, except dust and gas passes through wave Whole device is discharged behind shape channel, and enters next procedure, dust-removing and purifying method of the invention is able to solve powder in the prior art Dirt is difficult to the problem being kept completely separate, and has separating effect outstanding feature.
Boiler smoke dust separation system of the invention is of the invention by several Self controlling valves, pressure transmitter and two Separator, by the opening and closing of Self controlling valve, can when the first separator is dusted separation, to the second separator into Row blowback purification;When the second separator is dusted separation, blowback purification is carried out to the first separator;The process is complete It automatically controls, in production process, it is not necessary to stop production, therefore can be realized the continuous of dust in boiler smoke and separated, greatly improve Production efficiency saves time and economic cost, moreover it is possible to achieve energy-saving and emission reduction purposes, economic effect and obvious environment benefit.
Boiler desulfurization denitrating system of the invention is due to being provided with boiler smoke dust separation system of the invention, energy Enough lasting dust separations realized during desulphurization denitration to boiler smoke, improve efficiency, have saved cost.
Boiler smoke dust-removing and purifying method of the invention by the effect of above-mentioned boiler smoke dust separation separation system it is found that Boiler smoke dust-removing and purifying method of the invention can be realized the continuous separation to dust in boiler smoke, improve production effect Rate can create higher economic benefit, have good environmental benefit.
Detailed description of the invention
Fig. 1 is boiler smoke dust separation system schematic diagram of the invention;
Fig. 2 is boiler smoke dedusting and purifying device schematic diagram of the present invention;
Fig. 3 is boiler smoke dedusting and purifying device block schematic illustration of the present invention;
Fig. 4 be separator of the present invention to boiler smoke dust separation when schematic diagram;
Fig. 5 is separator blowback purification schematic diagram of the present invention;
Fig. 6 is another separator schematic diagram of the invention;
Fig. 7 is the plate frame structure schematic diagram in another separator of the invention;
Fig. 8 is the metallic sieve group structural schematic diagram in another separator of the invention;
Fig. 9 is the structural schematic diagram after all metallic sieves combination in another separator of the invention;
Figure 10 is the structural schematic diagram of the Combined sieve board in another separator of the invention;
Figure 11 is separator of the invention another as operation schematic diagram when separating dirt pocket;
Figure 12 be separator of the invention another as blowback clean room when operation schematic diagram.
In figure, the first air flue of 1-, the second air flue of 1-1-, 2- metal corrugated plate, 4- metallic sieve, 5- side plate, 6- desulfurization is de- The outlet of nitre system;The entrance of 7- system for desulfuration and denitration, cyclone separator of 8-, 9- secondary cyclone separator, 10-1- first Self controlling valve, the second Self controlling valve of 10-2-, 10-3- third Self controlling valve, the 4th Self controlling valve of 10-4-, the 5th automatic control of 10-5- Valve, the 6th Self controlling valve of 10-6-, the 7th Self controlling valve of 10-7-, the 8th Self controlling valve of 10-8-, 11-1- first pressure pick-up Device, 11-2- second pressure transmitter, the first separator of 12-, the second separator of 13-, 14- drier;101- first is passed in and out Air flue, 101-1- second pass in and out air flue, 102- metal sheet frame, the metallic sieve of 103- different meshes, 104- Combined sieve board.
Specific embodiment
Below in conjunction with drawings and examples, a specific embodiment of the invention is described in more details, so as to energy The advantages of enough more fully understanding the solution of the present invention and its various aspects.
Referring to Fig. 2 to Fig. 5, boiler smoke dust separation separator of the invention, including the first air flue 1, the second air flue 1-1, two side plates 5 and several metal corrugated plates 2;
Two 5 front and back face of side plate settings, from the left side of two side plates 5 to the right, several metal corrugated plates 2 are mutually flat It goes and is arranged at intervals between two side plates 5, the front-rear side walls of all metal corrugated plates 2 are fixedly connected with two side plates 5 respectively, From the lower part of two side plates 5 to top, waveform channel is formed between two adjacent metal corrugated plates 2;
Metallic sieve 4 is provided between two adjacent metal corrugated plates 2;
First air flue 1 and the second air flue 1-1 are connect with the upper and lower part of two side plates 5 respectively, the first air flue 1 and metal The upper end in the waveform channel formed between corrugated plating 2 is connected to, the wave formed between the second air flue 1-1 and metal corrugated plate 2 The lower end in shape channel is connected to.
Referring to Fig. 4 and Fig. 5, metallic sieve 4 includes the metallic sieve of several segments single layer, and the whole fold-line-shaped of metallic sieve 4 is set It sets between two adjacent metal corrugated plates 2, is welded between the both ends that 4 each sections of metallic sieve and metal corrugated plate 2.
Preferably, top to the lower part in the waveform channel formed between two neighboring metal corrugated plate 2, metallic sieve 4 height is the 1/3 of waveform channel height.The distance between two neighboring metal corrugated plate 2 is not more than 3mm, metallic sieve 4 For 200 meshes.
As shown in Figure 1, in conjunction with Fig. 2, boiler smoke dust separation separation system of the invention, including a cyclone separator 8, separator described in secondary cyclone separator 9, several Self controlling valves, several pressure transmitters and two;Two points It is respectively the first separator 12 and the second separator 13 from device;First separator 12 and the equal energy of the second separator 13 It is enough to be connect with boiler desulfurization denitrating system;
The outlet of cyclone separator 8 and 12 second air flue 1-1 of the first separator and the second separator 13 second Air flue 1-1 is all connected with;
The outlet of secondary cyclone separator 9 and 12 second air flue 1-1 of the first separator and the second separator 13 second Air flue 1-1 is all connected with;
First separator, 12 second air flue 1-1 and 13 second air flue 1-1 of the second separator are separated with secondary cyclone The entrance of device 9 connects;
First separator, 12 first air flue 1 and 13 first air flue 1 of the second separator enter with system for desulfuration and denitration Mouth 7 connects;
First separator, 12 first air flue 1 and 13 first air flue 1 of the second separator go out with system for desulfuration and denitration Mouth 6 connects;
Second air flue 1-1 of the first separator 12 and the second air flue 1-1 of the second separator 13 is respectively arranged with One pressure transmitter 11-1 and second pressure transmitter 11-2;
On pipeline between first separator, 12 first air flue 1 and the outlet 6 of system for desulfuration and denitration and and desulphurization denitration The first Self controlling valve 10-1 and the second Self controlling valve 10-2 are respectively set on pipeline between the entrance 7 of system;
First separator, 12 second air flue 1-1 is provided with third Self controlling valve 10-3 and the 4th internally piloted valve parallel with one another Door 10-4, third Self controlling valve 10-3 setting 12 second air flue 1-1 of the first separator and 9 entrance of secondary cyclone separator it Between pipeline on;4th Self controlling valve 10-4 passes through the outlet of pipeline and secondary cyclone separator 9 and cyclone separator 8 Outlet is separately connected;
On pipeline between second separator, 13 first air flue 1 and the entrance 7 of system for desulfuration and denitration and and desulphurization denitration The 5th Self controlling valve 10-5 and the 6th Self controlling valve 10-6 is respectively set on pipeline between the outlet 6 of system;
Second separator, 13 second air flue 1-1 is provided with the 7th Self controlling valve 10-7 and the 8th internally piloted valve parallel with one another Door 10-8, the 7th Self controlling valve 10-7 setting 13 second air flue 1-1 of the second separator and 9 entrance of secondary cyclone separator it Between pipeline on;8th Self controlling valve 10-8 passes through the outlet of pipeline and secondary cyclone separator 9 and cyclone separator 8 Outlet is separately connected;
First Self controlling valve 10-1, third Self controlling valve 10-3, the 5th Self controlling valve 10-5 and the 8th Self controlling valve 10-8 It is connect with first pressure transmitter 11-1;
Second Self controlling valve 10-2, the 4th Self controlling valve 10-4, the 6th Self controlling valve 10-6 and the 7th Self controlling valve 10-7 It is connect with second pressure transmitter 11-2.
As shown in Figure 1, in conjunction with Fig. 2~Fig. 5, boiler smoke dust-removing and purifying method of the invention passes through above-mentioned purification system It carries out, process is as follows:
Step 1, the 8th Self controlling valve 10-8 and the 5th Self controlling valve 10-5 is opened, remaining Self controlling valve is turned off, will Boiler smoke is passed through a cyclone separator 8 and is dusted separation;Again by the boiler smoke after a cyclone separator 8 separates The second separator 13, which is passed through, from 13 second air flue 1-1 of the second separator is dusted separation, when dedusting separates, boiler smoke In solid particle filtered by metallic sieve 4, except dust and gas escapes and enter desulphurization denitration from 13 first air flue 1 of the second separator The entrance 7 of system, in system for desulfuration and denitration, except in dust and gas nitrogen and element sulphur be removed, obtain clean gas, clean gas is from de- The outlet 6 of sulphur denitrating system is discharged;
Step 2, when second pressure transmitter 11-2 detects the pressure of 13 second air flue 1-1 of the second separator beyond pre- If when value range, the detection letter of the 8th Self controlling valve 10-8 and the 5th Self controlling valve 10-5 reception second pressure transmitter 11-2 Number, and the 8th Self controlling valve 10-8 and the 5th Self controlling valve 10-5 is closed, meanwhile, the 4th Self controlling valve 10-4 and the second internally piloted valve Door 10-5 is opened, and the boiler smoke after a separation of cyclone separator 8 is dusted separation by the first separator 12;Then 6th Self controlling valve 10-6 and the 7th Self controlling valve 10-7 are opened, and the cleaning gas that the outlet 6 of system for desulfuration and denitration is discharged is from second 13 first air flue of separator enter the second separator 13, to the solid particle on 13 metallic sieve 4 of the second separator into Row blowback is detached from solid particle from metallic sieve 4, then enters again from 13 second air flue 1-1 of the second separator secondary Cyclone separator 9, secondary cyclone separator 9 separate the ash-laden gas for carrying blowback solid particle, through secondary cyclone point Gas after separating from device 9 enters the through the 4th Self controlling valve 10-4 with after the gas mixing of a cyclone separator 8 outlet again One separator 12 is dusted separation, when second pressure transmitter 11-2 detects 13 second air flue 1-1 of the second separator Pressure when reaching preset range value, the 6th Self controlling valve 10-6 and the 7th Self controlling valve 10-7 are closed;
Step 3, when first pressure transmitter 11-1 detects the pressure of 12 second air flue 1-1 of the first separator beyond pre- If when value range, the detection letter of the 4th Self controlling valve 10-4 and the second Self controlling valve 10-2 reception first pressure transmitter 11-1 Number, and the 4th Self controlling valve 10-4 and the second Self controlling valve 10-2 is closed, meanwhile, the 8th Self controlling valve 10-8 and the 5th internally piloted valve Door 10-5 is opened, and the mixed gas after a cyclone separator 8 and the separation of secondary cyclone separator 9 passes through the second separator 13 It is dusted separation;Then the first Self controlling valve 10-1 and third Self controlling valve 10-3 is opened, 6 row of outlet of system for desulfuration and denitration Cleaning gas out enters the first separator 12 from 1 first air flue 1 of the first separator, to 1 metallic sieve 4 of the first separator On solid particle carry out blowback, be detached from solid particle from metallic sieve 4, then again from 12 second gas of the first separator Road 1-1 enters secondary cyclone separator 9, and secondary cyclone separator 9 separates the ash-laden gas for carrying blowback solid particle, Through third automatic control after the gas mixing that clean gas after the separation of secondary cyclone separator 9 is exported with a cyclone separator 8 again Valve 10-3 enters the second separator 13 and is dusted separation, when first pressure transmitter 11-1 detects the first separator When the pressure of 12 second air flue 1-1 reaches preset range value, the first Self controlling valve 10-1 and third Self controlling valve 10-3 are closed;
Step 4, step 2 is repeated to step 3, realizes the lasting separation to dust in boiler smoke.
When the present invention is to boiler smoke dust separation:
Opening a group Self controlling valve, (a group Self controlling valve includes the first Self controlling valve 10-1, third Self controlling valve 10-3, the 5th Self controlling valve 10-5 and the 8th Self controlling valve 10-8) when, closing b group Self controlling valve, (b group Self controlling valve includes the second Self controlling valve 10-2, the 4th Self controlling valve 10-4, the 6th Self controlling valve 10-6 and the 7th Self controlling valve 10-7);
At this point, being threaded through second from the boiler smoke for being mingled with a small amount of dust that a separation of cyclone separator 8 is completed Separator 13 carries out separation dedusting, and the second separator 13 is as separation dirt pocket, when separating dedusting, metal corrugated plate at this time 2 and metallic sieve 4 after make dust with except dust and gas separates, except dust and gas pass through separation dirt pocket, go to desulphurization denitration workshop section, pass through desulfurization Denitrating system removes sulphur, nitrogen, obtains clean gas;
A part of clean gas after desulphurization denitration can be from the first separator 12 by the first Self controlling valve 10-1 of control The first air flue 1 enter the first separator 12, at this time the first separator 12 as blowback purify dirt room, the clean gas being passed through Blowback purification can be carried out to the first separator 12, when blowback purifies, this part cleaning gas can will be stuck in corrugated plating gap Fall with the dust blowback for being gathered in air flue, is then discharged from the second air flue 1-1 of the first separator 12, then removes secondary cyclone Separator;
The pyrolysis gas for being mingled with micro dust after the separation of secondary cyclone separator returns to the second separator 13;Second The second pressure transmitter 11-2 and coupled Self controlling valve being arranged in separator 13 are chain, when second pressure transmitter When 11-2 detects that pressure is excessive, second pressure transmitter 11-2 controls Self controlling valve connected to it and opens and be closed, separation Dirt pocket and blowback clean room exchange function, i.e., when the second separator 13 is as separation dirt pocket, the first separator 12 Dirt room is purified as blowback;When the first separator 12 is as dust separation room, the second separator 13 is purified as blowback Dirt room, moves in circles according to this, can be realized the lasting separation to boiler smoke dust separation.
It opens in a group Self controlling valve and b group Self controlling valve, wherein another group is in closed state when one group of unlatching.Work as dress Set interior pressure it is excessive when, change Self controlling valve group open and closed state, carry out blowback purification.
Boiler smoke dust separation separator of the invention also can be used such as flowering structure:
As shown in fig. 6, separator includes that the first disengaging air flue 101, second passes in and out air flue 101-1 and several combination sieves Plate 102, each Combined sieve board 102 have entrance and exit;
Referring to Fig. 7~Figure 10, Combined sieve board 104 includes metallic sieve 103 and metal sheet frame 102, and metal sheet frame 102 is tool There is the frame structure of entrance, outlet and side wall, the entrance of all metal sheet frames 102 is connected to the first disengaging air flue 101, Suo Youjin The outlet for belonging to sheet frame 102 is connected to the second disengaging air flue 101-1 (see Fig. 6), and metallic sieve 103 is arranged multiple and is arranged in metal (see Figure 10) in sheet frame 102, welded between metallic sieve 103 and metal sheet frame 102;Entrance along metal sheet frame 102 extremely exports The mesh number in direction, metallic sieve 103 is incremented by (see Fig. 9);
As shown in Figure 8 and Figure 9, all metallic sieves are divided into several metallic sieve groups, in each metallic sieve group, gold The mesh number for belonging to sieve is identical;Each metallic sieve group includes the metallic sieve of three pieces single layer, and the metallic sieve of three pieces single layer is Z-shape Structure setting (see Fig. 8);The metallic sieve of each single layer and the axis in 102 entrance direction of metal sheet frame are non-90 degree angle (see Figure 10 to Figure 12).
As shown in Figure 9, it is preferred that along one end of metal sheet frame 102 to the other end, the mesh number of metallic sieve 103 is followed successively by 120 mesh, 140 mesh, 170 mesh and 200 mesh are incremented by setting.
The solid particle in boiler smoke can be separated using solid gas separator.Boiler smoke dedusting through the invention The process that purification separation device separates boiler smoke is following (referring to Fig. 5~Figure 11):
Boiler smoke is passed through to the inner cavity of metal sheet frame 102 from the first disengaging air flue 101, boiler smoke passes through Combined sieve board When 104, solid particle is filtered by metallic sieve 103, except dust and gas goes to desulphurization denitration workshop section by metallic sieve, and from Combined sieve board 102 outlet second passes in and out air flue 101-1 discharge;
When the pressure drop for passing in and out air flue 101-1 from the first disengaging air flue 101 to the second increases, stopping is passed through boiler smoke, It is passed through purification gas from the second disengaging air flue 101-1 to the inner cavity of Combined sieve board 102 again, makes the solid on metallic sieve 103 Grain is separated with metallic sieve 103, and the solid particle isolated is discharged from 102 entrance of Combined sieve board through the first disengaging air flue 101.
In the present invention, solid particle is stuck in metallic sieve in boiler smoke, except dust and gas removes desulphurization denitration by metallic sieve Workshop section, to realize the isolation of purified function of separator.When separator passes in and out air flue from the first disengaging air flue 101 to the second When the pressure drop of 101-1 increases, it is reversely blown into purified clean gas to separator, the solid product being stuck on sieve is blown out Separator, so that separator be made to separate dedusting function " regeneration ".
As shown in figure 11, enter containing boiler smoke from 102 lower part of metal sheet frame (i.e. entrance), top (exports) ease Out, this process is dedusting separation process;As shown in figure 11, blowback air is entered from 102 top of metal sheet frame (exporting), under Portion's (i.e. entrance) evolution.
It is the structure after two separators of the invention are connected with each other referring to Fig. 6, two separators are respectively to separate Device A and separator B, separator A and separator B are symmetrical set, when being dusted, from a whirlwind point From the boiler smoke for being mingled with dust be dusted by separator A, separating device A as separation dirt pocket, make dust and remove Dust and gas separation, goes to desulphurization denitration workshop section.When separator A first passes in and out the pressure drop liter that air flue 101 to the second passes in and out air flue 101-1 Gao Shi, the boiler smoke for being mingled with dust for switching a cyclonic separation is dusted by separator B, after desulphurization denitration A part of cleaning gas is reversely passed through in separator A, realizes that the blowback to separator A purifies, separator A is blowback at this time Clean room, in blowback purification process, clean gas blowback is stuck in separator A metal sieve plate gap and accumulates in the dust of air flue, Dust is taken out of separator A, into secondary cyclone separator.It is mingled with micro dust after the separation of secondary cyclone separator Pyrolysis gas and the boiler smoke mixing after a cyclonic separation it is another rise to enter separator B and be dusted separate;
When separator B first, which passes in and out air flue 101 to the second, passes in and out the pressure drop raising of air flue 101-1, switching gas circuit makes Separator A vents one's spleen to the heat of mixing as separation dirt pocket carry out separation dedusting again, and separator B is used as blowback to purify again Room carries out the blowback purification of itself, recycles according to this, achievees the purpose that continuously to separate dedusting.
The device of the invention, System and method for apply also for the industry of other separation dust.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although referring to embodiment to the present invention into Detailed description is gone, it will be apparent to an ordinarily skilled person in the art that under the premise without departing from the spirit and scope of the present invention To modification or equivalent substitute that the present invention carries out, should all cover within the scope of the present invention.

Claims (7)

1. a kind of boiler smoke dust separation separator, which is characterized in that including the first air flue (1), the second air flue (1-1), Two side plates (5) and several metal corrugated plates (2);
Face setting before and after two side plates (5), from the left side of two side plates (5) to the right, several metal corrugated plates (2) are mutual It is parallel and be arranged at intervals between two side plates (5), the front-rear side walls of all metal corrugated plates (2) respectively with two side plates (5) It is fixedly connected, from the lower part of two side plates (5) to top, forms waveform channel between two adjacent metal corrugated plates (2);
Metallic sieve (4) are provided between two adjacent metal corrugated plates (2);
First air flue (1) and the second air flue (1-1) are connect with the upper and lower part of two side plates (5) respectively, the first air flue (1) with The upper end in the waveform channel formed between metal corrugated plate (2) is connected to, between the second air flue (1-1) and metal corrugated plate (2) The lower end in the waveform channel of formation is connected to.
2. a kind of boiler smoke dust separation separator according to claim 1, which is characterized in that metallic sieve (4) Metallic sieve including several segments single layer, metallic sieve (4) entirety fold-line-shaped be arranged in two adjacent metal corrugated plates (2) it Between, it is welded between the both ends and metal corrugated plate (2) of each section of metallic sieve (4).
3. a kind of boiler smoke dust separation separator according to claim 1, which is characterized in that along two neighboring gold Belong to top to the lower part in the waveform channel formed between corrugated plating (2), the height of metallic sieve (4) is waveform channel height 1/3.
4. a kind of boiler smoke dust separation separator according to claim 1, which is characterized in that two neighboring metal The distance between corrugated plating (2) is not more than 3mm, and metallic sieve (4) is 200 meshes.
5. a kind of boiler smoke dust separation separation system, which is characterized in that including cyclone separator (8), a secondary cyclone Separation described in separator (9), several Self controlling valves, several pressure transmitters and two claim 1-4 any one Device;Two separators are respectively the first separator (12) and the second separator (13);First separator (12) and Second separator (13) can be connect with boiler desulfurization denitrating system;
The outlet of cyclone separator (8) and (12) second air flue (1-1) of the first separator and the second separator (13) Second air flue (1-1) is all connected with;
The outlet of secondary cyclone separator (9) and (12) second air flue (1-1) of the first separator and the second separator (13) Second air flue (1-1) is all connected with;
(12) second air flue (1-1) of first separator and (13) second air flue (1-1) of the second separator are and secondary cyclone The entrance of separator (9) connects;
(12) first air flue (1) of first separator and (13) first air flue (1) of the second separator can be with desulphurization denitrations The entrance (7) of system connects;
(12) first air flue (1) of first separator and (13) first air flue (1) of the second separator can be with desulphurization denitrations The outlet (6) of system connects;
The second air flue (1-1) of first separator (12) and the second air flue (1-1) of the second separator (13) are respectively set There are first pressure transmitter (11-1) and second pressure transmitter (11-2);
It is taken off on pipeline between (12) first air flue (1) of first separator and the outlet (6) of system for desulfuration and denitration and with desulfurization The first Self controlling valve (10-1) and the second Self controlling valve (10-2) is respectively set on pipeline between the entrance (7) of nitre system;
(12) second air flue (1-1) of first separator is provided with third Self controlling valve (10-3) and the 4th automatic control parallel with one another Valve (10-4), third Self controlling valve (10-3) setting is in (12) second air flue (1-1) of the first separator and secondary cyclone point From on the pipeline between device (9) entrance;4th Self controlling valve (10-4) by the outlets of pipeline and secondary cyclone separator (9) and The outlet of cyclone separator (8) is separately connected;
It is taken off on pipeline between (13) first air flue (1) of second separator and the entrance (7) of system for desulfuration and denitration and with desulfurization The 5th Self controlling valve (10-5) and the 6th Self controlling valve (10-6) is respectively set on pipeline between the outlet (6) of nitre system;
(13) second air flue (1-1) of second separator is provided with the 7th Self controlling valve (10-7) and the 8th automatic control parallel with one another Valve (10-8), the setting of the 7th Self controlling valve (10-7) is in (13) second air flue (1-1) of the second separator and secondary cyclone point From on the pipeline between device (9) entrance;8th Self controlling valve (10-8) by the outlets of pipeline and secondary cyclone separator (9) and The outlet of cyclone separator (8) is separately connected;
First Self controlling valve (10-1), third Self controlling valve (10-3), the 5th Self controlling valve (10-5) and the 8th Self controlling valve (10-8) is connect with first pressure transmitter (11-1);
Second Self controlling valve (10-2), the 4th Self controlling valve (10-4), the 6th Self controlling valve (10-6) and the 7th Self controlling valve (10-7) is connect with second pressure transmitter (11-2).
6. a kind of boiler desulfurization denitrating system, which is characterized in that boiler desulfurization denitrating system, which is provided with described in claim 5, to be divided From system.
7. a kind of boiler smoke dust-removing and purifying method based on the boiler smoke dust separation separation system described in claim 5, It is characterised in that it includes following steps:
Step 1, the 8th Self controlling valve (10-8) and the 5th Self controlling valve (10-5) are opened, remaining Self controlling valve is turned off, will Boiler smoke is passed through a cyclone separator (8) and is dusted separation;Again by the boiler after a cyclone separator (8) separates Flue gas is passed through the second separator (13) from (13) second air flue (1-1) of the second separator and is dusted separation, dedusting separation When, the solid particle in boiler smoke is filtered by metallic sieve (4), except dust and gas is from (13) first air flue (1) of the second separator The entrance (7) for escaping and enter system for desulfuration and denitration, in system for desulfuration and denitration, except in dust and gas nitrogen and element sulphur be removed, Clean gas is obtained, clean gas is discharged from the outlet (6) of system for desulfuration and denitration;
Step 2, when second pressure transmitter (11-2) detects that the pressure of (13) second air flue (1-1) of the second separator exceeds When preset range value, the 8th Self controlling valve (10-8) and the 5th Self controlling valve (10-5) receive second pressure transmitter (11-2) Signal is detected, and closes the 8th Self controlling valve (10-8) and the 5th Self controlling valve (10-5), meanwhile, the 4th Self controlling valve (10-4) It is opened with the second Self controlling valve (10-5), the boiler smoke after cyclone separator (8) separation passes through the first separator (12) it is dusted separation;Then the 6th Self controlling valve (10-6) and the 7th Self controlling valve (10-7) are opened, system for desulfuration and denitration Outlet (6) discharge cleaning gas from (13) first air flue of the second separator enter the second separator (13), to second point Blowback is carried out from the solid particle on device (13) metallic sieve (4), is detached from solid particle from metallic sieve (4), then Enter secondary cyclone separator (9) from (13) second air flue (1-1) of the second separator again, secondary cyclone separator (9) is to taking Ash-laden gas with blowback solid particle is separated, through secondary cyclone separator (9) separation after gas again with a whirlwind Enter the first separator (12) through the 4th Self controlling valve (10-4) after the gas mixing of separator (8) outlet to be dusted point From when second pressure transmitter (11-2) detects that the pressure of (13) second air flue (1-1) of the second separator reaches default model When enclosing value, the 6th Self controlling valve (10-6) and the 7th Self controlling valve (10-7) are closed;
Step 3, when first pressure transmitter (11-1) detects that the pressure of (12) second air flue (1-1) of the first separator exceeds When preset range value, the 4th Self controlling valve (10-4) and the second Self controlling valve (10-2) receive first pressure transmitter (11-1) Signal is detected, and closes the 4th Self controlling valve (10-4) and the second Self controlling valve (10-2), meanwhile, the 8th Self controlling valve (10-8) It is opened with the 5th Self controlling valve (10-5), the mixed gas after a cyclone separator (8) and secondary cyclone separator (9) separation Separation is dusted by the second separator (13);Then the first Self controlling valve (10-1) and third Self controlling valve (10-3) are beaten It opens, the cleaning gas of outlet (6) discharge of system for desulfuration and denitration enters the first separation from (1) first air flue (1) of the first separator Device (12) carries out blowback to the solid particle on the first separator (1) metallic sieve (4), makes solid particle from metallic screen Net is detached from (4), then enters secondary cyclone separator (9) from (12) second air flue (1-1) of the first separator again, secondary rotation Wind separator (9) separates the ash-laden gas for carrying blowback solid particle, clean after secondary cyclone separator (9) separation Net gas enters the second separator through third Self controlling valve (10-3) with after the gas mixing of a cyclone separator (8) outlet again (13) it is dusted separation, when first pressure transmitter (11-1) detects (12) second air flue (1-1) of the first separator When pressure reaches preset range value, the first Self controlling valve (10-1) and third Self controlling valve (10-3) are closed;
Step 4, step 2 is repeated to step 3, realizes the lasting separation to dust in boiler smoke.
CN201810668991.9A 2018-06-26 2018-06-26 Boiler flue gas dust removal purification separation device, dust removal purification system, desulfurization and denitrification system and method Active CN108815964B (en)

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Publication number Priority date Publication date Assignee Title
JP2006194126A (en) * 2005-01-12 2006-07-27 Babcock Hitachi Kk Flue gas treatment facility and method for purging flue gas
US20110108483A1 (en) * 2008-04-03 2011-05-12 Povl Kaas Filter unit with filter bank
CN102631813A (en) * 2012-04-26 2012-08-15 中国人民解放军军事医学科学院卫生装备研究所 Renewable gas particulate filtering unit
CN102698532A (en) * 2012-06-27 2012-10-03 卓卫民 Filter bag gas-solid separator and gas-solid separation method thereof
CN102861491A (en) * 2012-09-05 2013-01-09 南通华鑫传质设备科技有限公司 Efficient anti-blocking demister
CN204656311U (en) * 2015-05-20 2015-09-23 中国华电集团科学技术研究总院有限公司 A kind of cleaning system of coal-fired plant flue gas

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006194126A (en) * 2005-01-12 2006-07-27 Babcock Hitachi Kk Flue gas treatment facility and method for purging flue gas
US20110108483A1 (en) * 2008-04-03 2011-05-12 Povl Kaas Filter unit with filter bank
CN102631813A (en) * 2012-04-26 2012-08-15 中国人民解放军军事医学科学院卫生装备研究所 Renewable gas particulate filtering unit
CN102698532A (en) * 2012-06-27 2012-10-03 卓卫民 Filter bag gas-solid separator and gas-solid separation method thereof
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