CN113842719B - Flue gas ultralow emission system - Google Patents
Flue gas ultralow emission system Download PDFInfo
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- CN113842719B CN113842719B CN202111187920.5A CN202111187920A CN113842719B CN 113842719 B CN113842719 B CN 113842719B CN 202111187920 A CN202111187920 A CN 202111187920A CN 113842719 B CN113842719 B CN 113842719B
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- China
- Prior art keywords
- flue gas
- cloth bag
- bag
- low emission
- control line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/06—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to a flue gas ultra-low emission system, which comprises a denitration device, a desulfurization device and a bag-type dust remover, wherein the bag-type dust remover comprises: the cloth bag comprises a cloth bag body and a framework, wherein the framework is composed of a plurality of supporting units, and adjacent supporting units are hinged. The two ends of each supporting unit are provided with a first hinge hole and a second hinge hole which are transverse, the center lines of the first hinge holes and the second hinge holes are perpendicular, and the first hinge holes and the second hinge holes of the adjacent supporting units are hinged. The outer edge circumference equipartition of support element has the longitudinal through wires hole in four places, wears to be equipped with the control line in the through wires hole, and the control line has four, and the control line passes through the through wires hole of all support element relevant position in proper order. The supporting unit is internally provided with a lifting ring which can be lifted actively, and the periphery of the lifting ring is used for cleaning the cloth bag. The dust remover can remove dust on the cloth bag of the cloth bag dust remover, improves the dust removing capacity of the cloth bag dust remover, and improves the working efficiency of a smoke ultralow emission system.
Description
Technical Field
The invention relates to the technical field of flue gas purification, in particular to a flue gas ultra-low emission system.
Background
The generation of haze is mostly derived from industrial carbon emissions, of which boiler flue gas emissions are the main cause of atmospheric pollution. Along with the higher living standard of people, the environmental governance of China is becoming more and more strict, and the requirement that the flue gas emission of a coal-fired unit reaches the ultralow emission standard (NOX is less than 50 mg/m) after 7, 7 and 1 days in 2017 3 ，SO2＜35mg/m 3 Dust content < 10mg/m 3 )。
Aiming at the problem that the single denitration, dedusting and desulfurization technology of the flue gas can not reach the national specified ultralow emission standard, the design of new boiler flue gas purification equipment is urgent.
The nitrogen oxides in the flue gas are generally removed by adopting SCR and SNCR denitration reactors, wherein SCR is mainly used for pulverized coal furnaces, and SNCR is mainly used for circulating fluidized bed boilers. SO2 in flue gas can be removed by flue gas desulfurization technology, and limestone-gypsum method (calcium method) and ammonia method are the most widely used. The smoke and dust in the flue gas is mainly removed by a dust remover, and the more advanced dust removing mode comprises electric dust removal and cloth bag dust removal. The electric dust removal has large power consumption, the electrodes are easy to be grounded, the fault rate is high, the long-period operation cannot be realized, and the dust removal efficiency cannot achieve the expected effect; although the bag-type dust removal has no defects, the dust can be accumulated on the bag after long-time use, the dust removal capability of the bag-type dust remover is influenced, and the working efficiency of a smoke ultralow emission system is reduced.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a flue gas ultra-low emission system which can remove dust on a bag of a bag-type dust remover, improve the dust removal capability of the bag-type dust remover and improve the working efficiency of the flue gas ultra-low emission system.
The technical scheme adopted by the invention for solving the technical problems is as follows:
flue gas minimum discharge system, including denitrification facility, desulphurization unit and sack cleaner, the sack cleaner includes: the cloth bag comprises a cloth bag body and a framework, wherein the framework is composed of a plurality of supporting units, and adjacent supporting units are hinged.
Furthermore, the two ends of each supporting unit are provided with a first hinge hole and a second hinge hole which are transverse, the center lines of the first hinge holes and the second hinge holes are perpendicular, and the first hinge holes and the second hinge holes of the adjacent supporting units are hinged.
Furthermore, the supporting units are uniformly provided with four longitudinal threading holes along the circumference, control lines penetrate through the threading holes, the number of the control lines is four, the control lines sequentially penetrate through the threading holes at the corresponding positions of all the supporting units, the lower ends of the control lines are fixed with the supporting unit at the lowest part, and the upper ends of the control lines are connected with the thread pulling devices.
Furthermore, a lifting ring capable of lifting actively is arranged in the supporting unit, and the periphery of the lifting ring is used for cleaning the cloth bag.
Further, the supporting unit includes: the support frame, the support frame includes the outer annular body at both ends, and is fixed through vertical post connection between the outer annular body, and first hinge hole and second hinge hole are installed respectively on the outer annular body at both ends.
Furthermore, the center at both ends of the support frame is provided with a support center hole, the support center hole is rotatably provided with a center shaft, the center of the lifting ring is provided with a lifting center hole, the lifting center hole is in threaded connection with the center shaft, and the periphery of the lifting ring is provided with a bayonet in guiding connection with the longitudinal column.
Furthermore, the outer ring of the lifting ring is provided with a cleaning ring, and the cleaning ring is provided with bristles for cleaning the cloth bag.
Furthermore, the longitudinal column is provided with a bulge, and when the bayonet moves through the bulge, the supporting unit can vibrate.
Further, the longitudinal column is provided with a hollow longitudinal groove.
Furthermore, the adjacent central shafts are connected through a cross coupling.
The invention has the beneficial effects that:
(1) the bag can be driven to deform by the bending deformation of the framework, so that large particles and large dust attached to the outer side of the bag fall off, and the dust removal efficiency of the bag-type dust remover is improved.
(2) The lifting ring capable of lifting can be used for cleaning the cloth bag from the inner side of the cloth bag, small particle dust on the wall of the cloth bag is swept, and the dust removal efficiency of the cloth bag dust remover is improved.
(3) The whole supporting unit can vibrate to shake off dust on the cloth bag, so that dust on the cloth bag is further removed, and the working efficiency of the smoke ultralow emission system is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the skeletal frame of the present invention;
FIG. 3 is an exploded view of the support unit of the present invention;
FIG. 4 is a schematic structural view of the support frame of the present invention;
fig. 5 is a schematic view of the structure of the sweeping ring of the present invention.
In the figure:
1. cloth bag, 2. skeleton
21. Support unit, 22 control line
211. Support bracket, 212, lifting ring, 213, central shaft
2111. Outer ring body, 2112, first hinge hole, 2113, second hinge hole, 2114, threading hole, 2115, support center hole, 2116, longitudinal post, 2117, protrusion, 2118, longitudinal groove
2121. Cleaning ring 2122, bayonet 2123, lifting central hole 2124 and cross beam.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The ultra-low emission system of flue gas includes denitrification facility, desulphurization unit and sack cleaner, and boiler exhaust flue gas carries out the denitration through denitrification facility, desulphurization unit carries out the desulfurization and the sack cleaner removes dust to can reach the ultra-low emission standard of national requirement.
Wherein, the sack cleaner includes: sack 1 and skeleton 2, sack 1 are responsible for filtering the flue gas of flowing through, and the dust of the flue gas after the filtration is isolated in the 1 outside of sack, and skeleton 2 is installed in the inside of sack 1 for prop up sack 1 for the column, in order to can clear up the dust in the 1 outside of sack, this technical scheme's skeleton 2 is mobilizable, and the activity through skeleton 2 warp can make 1 activity of sack warp to make the dust in the 1 outside of sack drop.
The framework 2 is composed of a plurality of supporting units 21, and the adjacent supporting units 21 are hinged. The relative positions of the adjacent supporting units 21 can rotate, so that the whole framework 2 can be bent and deformed, and the cloth bag 1 is driven to movably deform.
In order to enable the skeleton 2 to perform multi-directional bending deformation, the two ends of the support unit 21 are provided with a first hinge hole 2112 and a second hinge hole 2113 which are transverse, the center lines of the first hinge hole 2112 and the second hinge hole 2113 are perpendicular, and the first hinge hole 2112 and the second hinge hole 2113 of the adjacent support unit 21 are hinged. With the above-described structure, the support units 21 on both sides of one support unit 21 can be rotated perpendicularly to each other, and the movements are combined to allow the entire frame 2 to be subjected to multidimensional bending deformation.
In order to drive the framework 2 to perform multidimensional bending deformation, four longitudinal threading holes 2114 are uniformly distributed on the outer edge of the supporting unit 21 along the circumference, the threading holes are sequentially located near the two first hinging holes 2112 and the two second hinging holes 2113, control lines 22 are arranged in the threading holes 2114 in a penetrating manner, four control lines 22 are arranged, the control lines 22 sequentially penetrate through the threading holes 2114 in the corresponding positions of all the supporting units 21, the lower end of each control line 22 is fixed with the supporting unit 21 at the lowest part, the upper end of each control line 22 is connected with a wire pulling device, and the wire pulling device can be a motor, a reel or other devices capable of operating the control lines 22. When one of the control wires 22 is tensioned and the control wire 22 on its opposite side is released, the frame 2 can flex somewhat towards the tensioned control wire 22, and when all of the control wires 22 are under tension, the shape of the frame 2 is fixed. By controlling the different control lines 22, the frame 2 can be straightened and fixed and the frame 2 can be bent in any direction.
In order to further clean the side wall of the cloth bag 1, a lifting ring 212 capable of actively lifting is arranged in the supporting unit 21, and the periphery of the lifting ring 212 is used for cleaning the cloth bag 1. The lifting ring 212 is lifted to sweep the periphery of the lifting ring over the inner wall of the cloth bag 1, so as to clean dust on the side wall of the cloth bag 1.
The supporting unit 21 is a cylindrical frame, and includes a supporting frame 211, where the supporting frame 211 includes outer rings 2111 at two ends, the outer rings 2111 are connected and fixed through longitudinal pillars 2116, and a first hinge hole 2112 and a second hinge hole 2113 are respectively installed on the outer rings 2111 at two ends.
In order to realize the lifting movement of the lifting ring 212 in the supporting unit 21, a supporting center hole 2115 is formed in the center of each end of the supporting frame 211, the supporting center hole 2115 is rotatably provided with a center shaft 213, a lifting center hole 2123 is formed in the center of the lifting ring 212, the lifting center hole 2123 is in threaded connection with the center shaft 213, a bayonet 2122 in guiding connection with the longitudinal post 2116 is formed in the outer periphery of the lifting ring 212, and the lifting ring 212 can only move along the length direction of the center shaft 213 but cannot rotate. By rotating the center shaft 213, the center shaft 213 can drive the lifting ring 212 to move up and down. And in order to allow the central shafts 213 of all the support units 21 to be rotated synchronously and to allow the synchronous rotation even if rotational displacement occurs between the support units 21, the adjacent central shafts 213 are connected by a cross coupling, and a connection point of the cross coupling is located on a central line of the first hinge hole 2112 and the second hinge hole 2113 which are engaged with each other. Thus, all the central shafts 213 can be driven to rotate by one power source, so that the power source is generally applied to the upper end of the topmost central shaft 213, and the power source is generally driven by a motor directly or by a motor through a transmission manner such as a chain, a belt, and the like.
The outer ring of the lifting ring 212 is provided with a cleaning ring 2121, and the cleaning ring 2121 is provided with bristles for cleaning the cloth bag 1. The lifting center hole 2123 of the lifting ring 212 is fixedly connected to the cleaning ring 2121 via a cross beam 2124, and the cross beam 2124 is provided with a slotted hole, so that the weight of the lifting ring 212 can be reduced by the slotted hole on the premise of keeping the rigidity of the lifting ring 212, and the control wire 22 between the upper and lower threading holes 2114 passes through the slotted hole, thereby preventing the interference between the lifting ring 212 and the lifting ring 212.
In order to generate vibration during the lifting process of the lifting ring 212 and further enhance the dust removal effect, the side surface of the longitudinal post 2116, which is in contact with the boss 2122, is provided with a protrusion 2117, the longitudinal post 2116 is provided with a hollow longitudinal groove 2118, the longitudinal groove 2118 can increase the elasticity of the protrusion 2117 so that greater vibration can be generated when the protrusion 2117 is squeezed and then released, when the boss 2122 moves past the protrusion 2117, the boss 2117 is squeezed and then released by the boss 2122, vibration can be generated between the boss 2117 and the boss 2122, and vibration conduction can be generated, so that the whole supporting unit 21 generates vibration. Because sack 1 and support element 21 direct contact to make sack 1 produce the vibration, thereby shake the attached large granule of sack 1 outside, the bold dust that falls and drop, improve the dust collection efficiency of sack cleaner.
Through the structure, three dust removal modes of the cloth bag, namely cloth bag deformation dust removal, cloth bag wall cleaning dust removal and cloth bag vibration dust removal, can be realized, the three dust removal modes are comprehensively used, the dust removal effect on the cloth bag is greatly increased, the dust removal capacity of the cloth bag dust remover is improved, and the working efficiency of a smoke ultralow emission system is improved.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The flue gas ultra-low emission system comprises a denitration device, a desulphurization device and a bag-type dust collector, and is characterized in that,
the bag-type dust collector comprises: the bag comprises a cloth bag (1) and a framework (2), wherein the framework (2) consists of a plurality of supporting units (21), and adjacent supporting units (21) are hinged;
the upper end of the supporting unit (21) is symmetrically provided with transverse first hinge holes (2112), the lower end of the supporting unit (21) is symmetrically provided with transverse second hinge holes (2113), the center lines of the first hinge holes (2112) and the second hinge holes (2113) are vertical, and the first hinge holes (2112) and the second hinge holes (2113) of adjacent supporting units (21) are hinged;
supporting element (21) outer along the circumference equipartition have longitudinal through wires hole (2114) in four places, wear to be equipped with control line (22) in through wires hole (2114), control line (22) have four, all supporting element (21) relevant position's through wires hole (2114) are passed in proper order in control line (22), the lower extreme and the supporting element (21) of bottommost of control line (22) are fixed, the upper end of control line (22) is connected with wire drawing device.
2. The ultra low emission flue gas system of claim 1,
the supporting unit (21) is internally provided with a lifting ring (212) capable of lifting actively, and the periphery of the lifting ring (212) is used for cleaning the cloth bag (1).
3. The ultra low emission flue gas system of claim 2,
the support unit (21) comprises: the supporting frame (211) comprises outer ring bodies (2111) at two ends, the outer ring bodies (2111) are fixedly connected through longitudinal columns (2116), and the first hinge hole (2112) and the second hinge hole (2113) are respectively arranged on the outer ring bodies (2111) at the two ends.
4. The ultra low emission flue gas system of claim 3,
support centre bore (2115) have been seted up at the center at support frame (211) both ends, support centre bore (2115) are rotated and are provided with center pin (213), lift centre bore (2123) have been seted up at the center of lift ring (212), lift centre bore (2123) with center pin (213) threaded connection, the periphery of lift ring (212) seted up with bayonet socket (2122) of vertical post (2116) direction connection.
5. The ultra low emission flue gas system of claim 4,
the outer ring of the lifting ring (212) is provided with a cleaning ring (2121), and the cleaning ring (2121) is provided with bristles for cleaning the cloth bag (1).
6. The ultra low emission flue gas system of claim 5,
the longitudinal post (2116) is provided with a protrusion (2117), and the support unit (21) is capable of generating vibrations when the bayonet (2122) moves past the protrusion (2117).
7. The ultra low emission flue gas system of claim 6,
the longitudinal post (2116) is provided with a hollow longitudinal groove (2118).
8. The ultra low emission flue gas system of claim 4,
the adjacent central shafts (213) are connected through a cross coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187920.5A CN113842719B (en) | 2021-10-12 | 2021-10-12 | Flue gas ultralow emission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187920.5A CN113842719B (en) | 2021-10-12 | 2021-10-12 | Flue gas ultralow emission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113842719A CN113842719A (en) | 2021-12-28 |
| CN113842719B true CN113842719B (en) | 2022-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111187920.5A Active CN113842719B (en) | 2021-10-12 | 2021-10-12 | Flue gas ultralow emission system |
Country Status (1)
| Country | Link |
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| CN (1) | CN113842719B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB905771A (en) * | 1960-05-06 | 1962-09-12 | Woodall Duckham Constr Co Ltd | Improvements in or relating to hoists |
| CN200977442Y (en) * | 2006-11-16 | 2007-11-21 | 武汉凯迪蓝天科技有限公司 | Elastic skeleton cloth bag device for bag type dust remover |
| CN106037583A (en) * | 2016-08-10 | 2016-10-26 | 天佑电器（苏州）有限公司 | Filter bag mounting structure and dust collector with same |
| CN212790184U (en) * | 2019-03-15 | 2021-03-26 | 龙岩学院 | Dry-type dust filtering device |
-
2021
- 2021-10-12 CN CN202111187920.5A patent/CN113842719B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB905771A (en) * | 1960-05-06 | 1962-09-12 | Woodall Duckham Constr Co Ltd | Improvements in or relating to hoists |
| CN200977442Y (en) * | 2006-11-16 | 2007-11-21 | 武汉凯迪蓝天科技有限公司 | Elastic skeleton cloth bag device for bag type dust remover |
| CN106037583A (en) * | 2016-08-10 | 2016-10-26 | 天佑电器（苏州）有限公司 | Filter bag mounting structure and dust collector with same |
| CN212790184U (en) * | 2019-03-15 | 2021-03-26 | 龙岩学院 | Dry-type dust filtering device |
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| Publication number | Publication date |
|---|---|
| CN113842719A (en) | 2021-12-28 |
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