CN104399336A - Boiler dust collector and dust collection method - Google Patents

Boiler dust collector and dust collection method Download PDF

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Publication number
CN104399336A
CN104399336A CN201410690935.7A CN201410690935A CN104399336A CN 104399336 A CN104399336 A CN 104399336A CN 201410690935 A CN201410690935 A CN 201410690935A CN 104399336 A CN104399336 A CN 104399336A
Authority
CN
China
Prior art keywords
cylindrical shell
inlet pipe
flue gas
spiral board
boiler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410690935.7A
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Chinese (zh)
Inventor
韦有荣
周小红
龙必川
林世礼
覃智军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Red River Sugaring Co Ltd Of Land-Reclaimable Sugar Industry Group In Guangxi
Original Assignee
Red River Sugaring Co Ltd Of Land-Reclaimable Sugar Industry Group In Guangxi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Red River Sugaring Co Ltd Of Land-Reclaimable Sugar Industry Group In Guangxi filed Critical Red River Sugaring Co Ltd Of Land-Reclaimable Sugar Industry Group In Guangxi
Priority to CN201410690935.7A priority Critical patent/CN104399336A/en
Publication of CN104399336A publication Critical patent/CN104399336A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06Spray cleaning
    • B01D47/063Spray cleaning with two or more jets impinging against each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of devices for separating particles from gases or vapours
    • B01D50/004Combinations of devices relating to groups B01D45/00 and B01D47/00

Abstract

The invention relates to the technical field of dust collection, and discloses a boiler dust collector and a dust collection method. The dust collector comprises a first barrel body, a second barrel body, a gas inlet pipe, a gas outlet pipe and a slag discharging opening, wherein the second barrel body is arranged outside the first barrel body and is positioned at the lower part of the first barrel part; the bottom of the first barrel body is communicated with the second barrel body; a first spraying device is arranged on the top of the first barrel body and comprises a first annular water inlet pipe and a plurality of first nozzles connected with the first annular water inlet pipe; the first annular water inlet pipe is positioned at the periphery of the air inlet pipe; the first nozzles penetrate through first through holes in the first barrel body and are connected with the first through holes through flange disks in a sealed manner; a first rotational flow plate is arranged below the first nozzles in the first barrel body. According to the boiler dust collector and the dust collection method, the possibility that the nozzles are blocked by smoke dust can be reduced, and if blocked or damaged, a nozzle can be detached and replaced in time through the flange plate without stopping for maintenance and replacement; by the adoption of a dual-barrel-body structure, the working efficiency and the dust collection effect can be improved.

Description

Boiler dust remover and dust collection method
Technical field
The present invention relates to dedusting technology field, particularly relate to a kind of boiler dust remover and dust collection method.
Background technology
Deduster is a kind of equipment that dust is separated from flue gas.At present, deduster is widely used in carpentry work-shop, paint shop, between grinding machine, and battery production workshop, chemical workshop, cement, colliery, the place that the dusts such as power industry are larger.Boiler dust remover is a kind of common deduster, and its form is varied, but most of deduster is difficult to the requirement reaching Environmental-protecting dust-removing, desulfurization, and complex structure, antiseptic property is poor, and cost of manufacture is high, and service life is short.
Inventor finds: existing extractor nozzles is be fixedly mounted on the built-in nozzle on deduster inwall endless tube, due to boiler normally run in can not clear up the mud powder be deposited in nozzle bore in time, when after operation a period of time, spray nozzle clogging is reduced injection flow rate by the flue dust entered in dedusting, finally causes efficiency of dust collection to reduce.When needing nozzle clearing, can only after boiler down cooling, personnel just can enter in deduster and the top climbing to deduster is cleared up, and have certain danger and cleaning extremely bothers.
Summary of the invention
The object of this invention is to provide a kind of boiler dust remover and dust collection method, need to shut down the problem of carrying out clearing up during to solve the spray nozzle clogging of existing boiler dust remover.
In order to achieve the above object, a kind of boiler dust remover provided by the invention, described deduster comprises the first cylindrical shell, the second cylindrical shell, air inlet pipe, escape pipe and slag-drip opening, described second cylindrical shell is located at the outside of described first cylindrical shell and is positioned at the bottom of described first cylindrical shell, the bottom of described first cylindrical shell is communicated with described second cylindrical shell, described air inlet pipe is located at the top of described first cylindrical shell, described slag-drip opening is located at the bottom of described second cylindrical shell, and described escape pipe is located at the bottom of described second cylindrical shell and is positioned at the top of described slag-drip opening;
The top of described first cylindrical shell is provided with the first spray equipment, multiple first jet that described first spray equipment comprises the first annular water inlet pipe and is connected with described first annular water inlet pipe, described first annular water inlet pipe is positioned at the periphery of described air inlet pipe, the position that described first cylindrical shell is relative with described first jet is provided with the first through hole, described first jet is through described first through hole being tightly connected by ring flange and described first through hole, and the below that the inside of described first cylindrical shell is positioned at described first jet is provided with the first spiral board.
In above-mentioned boiler dust remover, the top of described second cylindrical shell is provided with the second spray equipment, multiple second nozzles that described second spray equipment comprises the second annular water inlet pipe and is connected with described second annular water inlet pipe, the periphery at the top of described second cylindrical shell is located at by described second annular water inlet pipe, the position that described second cylindrical shell is relative with described second nozzle is provided with the second through hole, described second nozzle is passed described second through hole and is tightly connected by ring flange and described second through hole, the below that the inside of described second cylindrical shell is positioned at described second nozzle is provided with the second spiral board.
In above-mentioned boiler dust remover, described second spiral board is extended by the inside of the second cylindrical shell to the first cylindrical shell.
In above-mentioned boiler dust remover, described deduster also comprises support column, and described support column is located at the center of described first cylindrical shell, for fixing described first spiral board and the second spiral board.
In above-mentioned boiler dust remover, described first spiral board and the second spiral board adopt fiber glass reinforced polypropylene material or stainless steel material to make.
In above-mentioned boiler dust remover, the bottom of described first cylindrical shell and the junction of described second cylindrical shell are provided with deflection plate.
In above-mentioned boiler dust remover, the aspect ratio of described first cylindrical shell and the second cylindrical shell is: 1.2-1.7.
The present invention also provides a kind of boiler dusting method, and it comprises the following steps:
S1, flue gas enter in the first cylindrical shell from air inlet pipe, change the movement locus of flue gas under the cyclonic action of the first spiral board, and carry out one-time dedusting under the spray effect of the first spray equipment;
S2, flue gas after one-time dedusting enter the second cylindrical shell by the bottom of the first cylindrical shell, again change the movement locus of flue gas, and carry out final dusting under the cyclonic action of the second spiral board under the spray effect of the second spray equipment;
The mixture of S3, dust granules after final dusting and water is discharged from slag-drip opening, and the flue gas after filtration is discharged by escape pipe.
In above-mentioned boiler dusting method, the maximum flue gas flow rate of flue gas is 4.3M 3/ s.
In above-mentioned boiler dusting method, in step S2, the flue gas after one-time dedusting enters the second cylindrical shell after the deflection plate of the first cylinder body bottom carries out baffling.
A kind of boiler dust remover that technique scheme provides and dust collection method, it has following technique effect: nozzle adopts ring flange to be arranged on the outside of cylindrical shell, in dust removal process, the probability that nozzle is blocked by flue dust can be reduced on the one hand, nozzle can carry out dismounting replacing by ring flange in time when blocking occurring or damaging on the other hand, shutdown is not needed to carry out maintain and replace, can increase work efficiency, adopt the structure of double shell, the time of contact of prolong smoke and spray water, spiral board is set in the below of nozzle simultaneously, change the movement locus of flue gas, flue gas is contacted better with shower water, to improve dust removing effects.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of boiler dust remover of the embodiment of the present invention.
Wherein, the 1, first cylindrical shell; 2, the second cylindrical shell; 3, air inlet pipe; 4, escape pipe; 5, slag-drip opening; 6, the first spray equipment; 61, the first annular water inlet pipe; 62, first jet; 7, the first spiral board; 8, the second spray equipment; 81, the second annular water inlet pipe; 82, second nozzle; 9, the second spiral board; 10, support column; 11, deflection plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, a kind of boiler dust remover of the embodiment of the present invention, this deduster comprises the first cylindrical shell 1, second cylindrical shell 2, air inlet pipe 3, escape pipe 4 and slag-drip opening 5, second cylindrical shell 2 is located at the outside of the first cylindrical shell 1 and is positioned at the bottom of this first cylindrical shell 1, the bottom of the first cylindrical shell 1 is communicated with the second cylindrical shell 2, air inlet pipe 3 is located at the top of the first cylindrical shell 1, and slag-drip opening 5 is located at the bottom of the second cylindrical shell 2, and escape pipe 4 is located at the bottom of the second cylindrical shell 2 and is positioned at the top of slag-drip opening 5, the top of the first cylindrical shell 1 is provided with the first spray equipment 6, multiple first jet 62 that this first spray equipment 6 comprises the first annular water inlet pipe 61 and is connected with the first annular water inlet pipe 61, first annular water inlet pipe 61 is positioned at the periphery of air inlet pipe 3, the position that first cylindrical shell 1 is relative with first jet 62 is provided with the first through hole, first jet 62 is passed this first through hole and is tightly connected by ring flange and the first through hole, nozzle is arranged on the outside of cylindrical shell by ring flange, form external spray device, the probability that nozzle is blocked by flue dust can be reduced on the one hand, ring flange can facilitate the installation and removal of first jet and the first cylindrical shell on the other hand, in dust removal process, first jet 62 can carry out dismounting by ring flange in time when blocking occurring or damaging and change, shutdown is not needed to carry out maintain and replace, the below that the inside of the first cylindrical shell 1 is positioned at first jet 62 is provided with the first spiral board 7, this first spiral board 7 pairs of flue gases carry out cyclonic action to change the movement locus of flue gas, by flue gas originally for the vertical flow direction changes over the motion in vertical spin shape direction, flue gas can be made thus effectively to contact with water, to improve one-time dedusting effect.
The first jet 62 of the present embodiment is connected with the first annular water inlet pipe 61 by sebific duct, and each first jet 62 adopts a stop valve to control respectively, adjustable with the flow realizing each nozzle.
The top of second cylindrical shell 2 of the present embodiment is provided with the second spray equipment 8, multiple second nozzles 82 that this second spray equipment 8 comprises the second annular water inlet pipe 81 and is connected with the second annular water inlet pipe 81, the periphery at the top of the second cylindrical shell 2 is located at by second annular water inlet pipe 81, the position that second cylindrical shell 2 is relative with second nozzle 82 is provided with the second through hole, second nozzle 82 is passed the second through hole and is tightly connected by ring flange and the second through hole, the below that the inside of the second cylindrical shell 2 is positioned at second nozzle 82 is provided with the second spiral board 9, this second spiral board 9 pairs of flue gases carry out cyclonic action to change the movement locus of flue gas, by flue gas originally for the vertical flow direction changes over the motion in vertical spin shape direction, flue gas can be made thus effectively to contact with water, to improve final dusting effect.
The second nozzle 82 of the present embodiment is connected with the second annular water inlet pipe 81 by sebific duct, and each second nozzle 82 adopts a stop valve to control respectively, adjustable with the flow realizing each nozzle.
Because the length of the first cylindrical shell 1 is longer, if only arrange spiral board at the top of the first cylindrical shell, so the flue gas of the first cylindrical shell bottom can become vertical direction again by vertical spin direction under gravity, therefore, second spiral board 9 of the present embodiment is extended by the inside of the second cylindrical shell 2 to the first cylindrical shell 1, flue gas is made to carry out twice eddy flow through the first spiral board 7 and the second spiral board 9 respectively in the first cylindrical shell 1, and then the movement locus of the flue gas of guarantee the first cylindrical shell 1 inside is in vertical spin direction, guarantees that flue gas is effectively absorbed by shower water in the first cylindrical shell.
The deduster of the present embodiment also comprises support column 10, and this support column 10 is located at the center of the first cylindrical shell 1, and for fixing the first spiral board 7 and the second spiral board 9, the top of support column 10 is taper, to facilitate installation.Wherein, first spiral board 7 and the second spiral board 8 can adopt fiber glass reinforced polypropylene material or stainless steel material to make, be preferably and adopt stainless steel material to make, stainless steel material corrosion resistance is strong, and adopting steel to make due to whole cylindrical shell, the spiral board that stainless steel material is made easily is installed, and spiral board comprises multiple blade, the plurality of blade is helical form under the state of overlooking, and the direction of flue gas is changed into vertical spin shape by vertical direction.
The present embodiment adopts the structure of double shell, the time of contact of prolong smoke and spray water, in addition, deflection plate 11 is provided with in the junction of the bottom of the first cylindrical shell 1 and the second cylindrical shell 2, to make flue gas from the bottom baffling of the first cylindrical shell to the process of the second cylindrical shell, due to gravity and the reason of inertia force and the water surface good contact of cylinder body bottom, dust removing effects can be improved.
The aspect ratio H1/H2 of the first cylindrical shell 1 and the second cylindrical shell 2 is: 1.2-1.7, and this aspect ratio is preferably 1.48, and preferably, the height H 1 of the first cylindrical shell 1 can be 10.5m, and the height H 2 of the second cylindrical shell 2 can be 7.1m.First cylindrical shell 1 of the present embodiment and the second cylindrical shell 2 arrange the aspect ratio of 1.2-1.7, and can be twice dedusting provides enough strokes to contact with water for flue gas, and its dust removing effects is optimum.The diameter of the first cylindrical shell 1 and the second cylindrical shell 2 than D1/D2 is: 0.5-0.8, and this diameter is than being preferably 0.7, and preferably, the diameter D1 of the first cylindrical shell 1 is 4.2m, and the diameter D2 of the second cylindrical shell 2 is 6m.
The present invention also provides a kind of dust collection method based on above-mentioned boiler dust remover, and it specifically comprises the following steps:
S1, flue gas enter in the first cylindrical shell from air inlet pipe, change the movement locus of flue gas under the cyclonic action of the first spiral board, and the movement locus of flue gas changes into vertical spin direction by vertical direction, and carry out one-time dedusting under the spray effect of the first spray equipment;
When during the first jet of the first spray equipment is by flue gas during dust granules blocking, by the ring flange that dismounting first jet is connected with the first cylindrical shell, to be removed from the first cylindrical shell by first jet, this process does not need shutdown just can realize, and improves operating efficiency;
S2, flue gas after one-time dedusting enter the second cylindrical shell by the bottom of the first cylindrical shell, because the height of the first cylindrical shell is larger, the movement locus of the flue gas of its underpart can change into vertical direction by vertical spin direction under gravity, therefore, flue gas after one-time dedusting again changes the movement locus of flue gas under the cyclonic action of the second spiral board, become vertical spin direction, and carry out final dusting under the spray effect of the second spray equipment;
When during the second nozzle of the second spray equipment is by flue gas during dust granules blocking, by the ring flange that dismounting second nozzle is connected with the second cylindrical shell, to be removed from the second cylindrical shell by second nozzle, this process does not need shutdown just can realize, and improves operating efficiency;
The mixture of S3, dust granules after final dusting and water is discharged from slag-drip opening, and the flue gas after filtration reaches national requirements for environmental protection, is discharged by escape pipe.
In order to ensure dust removing effects, the maximum flue gas flow rate of the flue gas of the present embodiment is 4.3M 3/ s.
Preferably, in step S2, flue gas after one-time dedusting enters the second cylindrical shell after the deflection plate of the first cylinder body bottom carries out baffling, flue gas after one-time dedusting is effectively contacted with the water surface of the first cylinder body bottom, enters after the dust granules in flue gas is only absorbed by the water in the second cylindrical shell and carry out final dusting.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.

Claims (10)

1. a boiler dust remover, it is characterized in that, described deduster comprises the first cylindrical shell, the second cylindrical shell, air inlet pipe, escape pipe and slag-drip opening, described second cylindrical shell is located at the outside of described first cylindrical shell and is positioned at the bottom of described first cylindrical shell, the bottom of described first cylindrical shell is communicated with described second cylindrical shell, described air inlet pipe is located at the top of described first cylindrical shell, described slag-drip opening is located at the bottom of described second cylindrical shell, and described escape pipe is located at the bottom of described second cylindrical shell and is positioned at the top of described slag-drip opening;
The top of described first cylindrical shell is provided with the first spray equipment, multiple first jet that described first spray equipment comprises the first annular water inlet pipe and is connected with described first annular water inlet pipe, described first annular water inlet pipe is positioned at the periphery of described air inlet pipe, the position that described first cylindrical shell is relative with described first jet is provided with the first through hole, described first jet is through described first through hole being tightly connected by ring flange and described first through hole, and the below that the inside of described first cylindrical shell is positioned at described first jet is provided with the first spiral board.
2. boiler dust remover according to claim 1, it is characterized in that, the top of described second cylindrical shell is provided with the second spray equipment, multiple second nozzles that described second spray equipment comprises the second annular water inlet pipe and is connected with described second annular water inlet pipe, the periphery at the top of described second cylindrical shell is located at by described second annular water inlet pipe, the position that described second cylindrical shell is relative with described second nozzle is provided with the second through hole, described second nozzle is passed described second through hole and is tightly connected by ring flange and described second through hole, the below that the inside of described second cylindrical shell is positioned at described second nozzle is provided with the second spiral board.
3. boiler dust remover as claimed in claim 2, it is characterized in that, described second spiral board is extended by the inside of the second cylindrical shell to the first cylindrical shell.
4. boiler dust remover as claimed in claim 3, it is characterized in that, described deduster also comprises support column, and described support column is located at the center of described first cylindrical shell, for fixing described first spiral board and the second spiral board.
5. boiler dust remover as claimed in claim 2, is characterized in that, described first spiral board and the second spiral board adopt fiber glass reinforced polypropylene material or stainless steel material to make.
6. the boiler dust remover as described in any one of claim 1-5, is characterized in that, the bottom of described first cylindrical shell and the junction of described second cylindrical shell are provided with deflection plate.
7. the boiler dust remover as described in any one of claim 1-5, is characterized in that, the aspect ratio of described first cylindrical shell and the second cylindrical shell is: 1.2-1.7.
8. a boiler dusting method, is characterized in that, comprises the following steps:
S1, flue gas enter in the first cylindrical shell from air inlet pipe, change the movement locus of flue gas under the cyclonic action of the first spiral board, and carry out one-time dedusting under the spray effect of the first spray equipment;
S2, flue gas after one-time dedusting enter the second cylindrical shell by the bottom of the first cylindrical shell, again change the movement locus of flue gas, and carry out final dusting under the cyclonic action of the second spiral board under the spray effect of the second spray equipment;
The mixture of S3, dust granules after final dusting and water is discharged from slag-drip opening, and the flue gas after filtration is discharged by escape pipe.
9. boiler dusting method as claimed in claim 8, it is characterized in that, the maximum flue gas flow rate of flue gas is 4.3M 3/ s.
10. boiler dusting method as claimed in claim 8, it is characterized in that, in step S2, the flue gas after one-time dedusting enters the second cylindrical shell after the deflection plate of the first cylinder body bottom carries out baffling.
CN201410690935.7A 2014-11-25 2014-11-25 Boiler dust collector and dust collection method Pending CN104399336A (en)

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Application Number Priority Date Filing Date Title
CN201410690935.7A CN104399336A (en) 2014-11-25 2014-11-25 Boiler dust collector and dust collection method

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105214430A (en) * 2015-10-31 2016-01-06 张继金 High temperature dust tail gas dust cleaning apparatus
CN105214429A (en) * 2015-10-31 2016-01-06 张继金 Be applicable to the cyclone dust collector of high temperature dust tail gas recycle
CN105214428A (en) * 2015-10-31 2016-01-06 张继金 Be applicable to the dust arrester of high temperature dust tail gas recycle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6036756A (en) * 1998-01-13 2000-03-14 The Babcock & Wilcox Company Retrofit of a center inlet type scrubber with absorption/gas distribution tray to improve gas-liquid contact in the absorption zone
CN2377452Y (en) * 1999-07-02 2000-05-10 石家庄市锅炉厂劳动服务公司 Desulfurizing soot-eliminating device specially adapted for coal-fired boiler
CN102641659A (en) * 2011-02-22 2012-08-22 贵州中烟工业有限责任公司 Smoke gas desulfuration dust remover
CN204337939U (en) * 2014-11-25 2015-05-20 广西农垦糖业集团红河制糖有限公司 Boiler dust remover

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6036756A (en) * 1998-01-13 2000-03-14 The Babcock & Wilcox Company Retrofit of a center inlet type scrubber with absorption/gas distribution tray to improve gas-liquid contact in the absorption zone
CN2377452Y (en) * 1999-07-02 2000-05-10 石家庄市锅炉厂劳动服务公司 Desulfurizing soot-eliminating device specially adapted for coal-fired boiler
CN102641659A (en) * 2011-02-22 2012-08-22 贵州中烟工业有限责任公司 Smoke gas desulfuration dust remover
CN204337939U (en) * 2014-11-25 2015-05-20 广西农垦糖业集团红河制糖有限公司 Boiler dust remover

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105214430A (en) * 2015-10-31 2016-01-06 张继金 High temperature dust tail gas dust cleaning apparatus
CN105214429A (en) * 2015-10-31 2016-01-06 张继金 Be applicable to the cyclone dust collector of high temperature dust tail gas recycle
CN105214428A (en) * 2015-10-31 2016-01-06 张继金 Be applicable to the dust arrester of high temperature dust tail gas recycle

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Application publication date: 20150311