CN204294116U - Denitrating flue gas dust arrester - Google Patents
Denitrating flue gas dust arrester Download PDFInfo
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- CN204294116U CN204294116U CN201420804495.9U CN201420804495U CN204294116U CN 204294116 U CN204294116 U CN 204294116U CN 201420804495 U CN201420804495 U CN 201420804495U CN 204294116 U CN204294116 U CN 204294116U
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- flue gas
- dust arrester
- coalescence
- heat exchanger
- gas dust
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Abstract
The utility model discloses a kind of denitrating flue gas dust arrester, comprise the Benitration reactor being provided with air inlet flue, also comprising and be connected by described air inlet flue the particle coalescence device communicated with Benitration reactor, in described particle coalescence device, being provided with the product whirlpool plate for making soot dust granule turbulization whirlpool; The edge of described product whirlpool plate is provided with dentalation; Flue gas needed the coalescence dedusting through particle coalescence device before entering Benitration reactor, fine particle in flue gas coalescence under the effect of particle coalescence mechanism becomes larger particles, improve the denitration efficiency of Benitration reactor, and the fine particle effectively removed in coal-fired flue-gas, reduce the discharge of fine particle, be conducive to air contaminant treatment, safeguard health; Produce whirlpool plate and can make soot dust granule turbulization whirlpool, under the effect of turbulent flow coalescence principle, the polymerization coalescence that can collide at little whirlpool place of the fine particle in flue gas is larger particles, realizes effective trapping of fine particle.
Description
Technical field
The utility model relates to filed of flue gas purification, particularly a kind of denitrating flue gas dust arrester.
Background technology
Flue dust in flue gas is the main source of PM2.5 fine particle in air, its very harmful to health, is the carcinogenic main contributor of air.Along with being on the increase of China's coal-fired flue-gas discharge capacity, the pollution problem of fine flue dust highlights day by day.For the purification of coal-fired flue-gas, the normal mode adopting denitrification apparatus to be combined with dust arrester of industry carries out denitration dust collecting, its quality removal efficiency reaches more than 99%, but its quantity removal efficiency is but lower than 50%, the particle of escaping into the substantial amounts of air is mostly the fine particle that can suck, the various toxic heavy metal element of the usual enrichment of fine particle, very harmful to ecological environment and health.
Therefore, for solving the problem, just needing to improve existing denitrating flue gas dust arrester, effectively can remove the fine particle in coal-fired flue-gas, reduce the discharge of fine particle, be conducive to air contaminant treatment, safeguard health.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of denitrating flue gas dust arrester, and it effectively can remove the fine particle in coal-fired flue-gas, reduces the discharge of fine particle, is conducive to air contaminant treatment, safeguards health.
Denitrating flue gas dust arrester of the present utility model, comprise the Benitration reactor being provided with air inlet flue, also comprising and be connected by described air inlet flue the particle coalescence device communicated with Benitration reactor, in described particle coalescence device, being provided with the product whirlpool plate for making soot dust granule turbulization whirlpool; The edge of described product whirlpool plate is provided with dentalation.
Further, the profile of tooth of described dentalation is the one or more kinds of combinations in triangle, square, trapezoidal or arc.
Further, triangular in shape, the rectangle of described product whirlpool plate, trapezoidal, " L " shape, " Z " shape, serpentine or ellipse.
Further, the bottom of described particle coalescence device is connected with the ash bucket for degassed discharge, and the cross-sectional area of described ash bucket reduces from top to bottom gradually.
Further, the gas approach place of described particle coalescence device is connected with the flue for being connected with economizer.
Further, described Benitration reactor is SCR denitration reactor, and described air inlet flue is connected with heat exchanger, and described heat exchanger is provided with the flow regulator of the flow for regulating heat transferring medium.
Further, described heat exchanger is pipe heat exchanger.
Further, described heat transferring medium is liquid, and the flue gas in described air inlet flue flows outward at the pipe of described heat exchanger, and described heat transferring medium is at the Bottomhole pressure of described heat exchanger.
Further, described flow regulator is arranged in the input duct of described heat exchanger.
The beneficial effects of the utility model: denitrating flue gas dust arrester of the present utility model, flue gas needed the coalescence dedusting through particle coalescence device before entering Benitration reactor, fine particle in flue gas coalescence under the effect of particle coalescence mechanism becomes larger particles, improve the denitration efficiency of Benitration reactor, and the fine particle effectively removed in coal-fired flue-gas, reduce the discharge of fine particle, be conducive to air contaminant treatment, safeguard health; Produce whirlpool plate and can make soot dust granule turbulization whirlpool, under the effect of turbulent flow coalescence principle, the polymerization coalescence that can collide at little whirlpool place of the fine particle in flue gas is larger particles, realizes effective trapping of fine particle; The edge producing whirlpool plate is provided with dentalation, is conducive to producing fluid turbulent whirlpool when flue gas flows through.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model, as shown in the figure: the denitrating flue gas dust arrester of the present embodiment, comprise the Benitration reactor 1 being provided with air inlet flue 11, also comprising and be connected by described air inlet flue 11 the particle coalescence device 2 communicated with Benitration reactor 1, in described particle coalescence device 2, being provided with the product whirlpool plate 21 for making soot dust granule turbulization whirlpool; The edge of described product whirlpool plate 21 is provided with dentalation (not shown); Flue gas needed the coalescence dedusting through particle coalescence device 2 before entering Benitration reactor 1, fine particle in flue gas coalescence under the effect of particle coalescence mechanism becomes larger particles, improve the denitration efficiency of Benitration reactor 1, and the fine particle effectively removed in coal-fired flue-gas, reduce the discharge of fine particle, be conducive to air contaminant treatment, safeguard health; Produce whirlpool plate 21 and can make soot dust granule turbulization whirlpool, under the effect of turbulent flow coalescence principle, the polymerization coalescence that can collide at little whirlpool place of the fine particle in flue gas is larger particles, realizes effective trapping of fine particle; The edge producing whirlpool plate 21 is provided with dentalation, is conducive to producing fluid turbulent whirlpool when flue gas flows through.
In the present embodiment, the profile of tooth of described dentalation is the one or more kinds of combinations in triangle, square, trapezoidal or arc; Be beneficial to further when flue gas flows through and produce fluid turbulent whirlpool.
In the present embodiment, described product whirlpool plate 21 is triangular in shape, rectangle, trapezoidal, " L " shape, " Z " shape, serpentine or ellipse; Produce whirlpool plate 21 in bending-like, be conducive to producing fluid turbulent whirlpool when flue gas flows through bending part, improve the effect of particle coalescence; The shell of particle coalescence device 2 is preferably square, and is conducive to processing and manufacturing, reduces production cost; Produce whirlpool plate 21 horizontal (namely along flue gas direction) and 1-3 block can be arranged, longitudinally can arrange 2-6 block, produce fore-and-aft distance between whirlpool plate 21 and can be 0.5-2.5m; In front dirt pocket 1, flue gas flow rate is 0.6-2m/s, and effect is better.
In the present embodiment, the bottom of described particle coalescence device 2 is connected with the ash bucket 3 for degassed discharge, and the cross-sectional area of described ash bucket 3 reduces from top to bottom gradually; In particle coalescence process, the part that quality is larger directly falls into ash bucket 3, reduces the dust quantity entering Benitration reactor 1, and the denitration effect of Benitration reactor 1 after improving, reduces the power consumption of Benitration reactor 1; Ash bucket 3 can be back taper, and its up big and down small structure is conducive to unloading ash; In addition, unloading valve and dust quantity detector can be set in ash bucket 3, to unload ash in time.
In the present embodiment, the gas approach place of described particle coalescence device 2 is connected with the flue 6 for being connected with economizer 5; Be convenient to the Equipments Setting along flow of flue gas direction.
In the present embodiment, described Benitration reactor 1 is SCR denitration reactor, and described air inlet flue 11 is connected with heat exchanger 4, and described heat exchanger 4 is provided with the flow regulator 41 of the flow for regulating heat transferring medium; SCR denitration inside reactor bearing catalyst, for denitration reaction provides space, ensure the even of the smooth and easy of flow of flue gas and air flow method, be creating conditions smoothly of denitration reaction simultaneously; By air inlet flue 11 place at SCR denitration reactor, heat exchanger 4 is set, the flue gas that thermal power plant fire coal produces must carry out exchange heat with the heat transferring medium in heat exchanger 4 before entering SCR denitration reactor, making flue gas enter temperature remains in the reaction temperature interval of catalyst, ensure that boiler realizes the qualified discharge of nitrogen oxide in all loading zones, improve the service life of denitrating catalyst simultaneously.
In the present embodiment, described heat exchanger 4 is pipe heat exchanger 4; The disposal ability of pipe heat exchanger 4 is large, selection range wide, strong adaptability, and is easy to manufacture, and production cost is lower, cleans more convenient, also can be suitable at high temperature under high pressure; The structure of heat exchanger 4 is identical with general pipe heat exchanger 4, comprises the parts such as housing, heating surface bank, tube sheet, deflection plate and bobbin carriage.
In the present embodiment, described heat transferring medium is liquid, and the flue gas in described air inlet flue 11 flows outward at the pipe of described heat exchanger 4, and described heat transferring medium is at the Bottomhole pressure of described heat exchanger 4; The two kinds of fluids carrying out heat exchange in heat exchanger 4 are respectively liquid heat transfer medium and flue gas, and wherein liquid heat transfer medium stroke is tube side, and flue gas is shell side, and the wall that heat exchanger 4 is restrained is heat-transfer area.
In the present embodiment, described flow regulator 41 is arranged in the input duct of described heat exchanger 4; Conveniently feed liquor flow is regulated.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (9)
1. a denitrating flue gas dust arrester, comprise the Benitration reactor being provided with air inlet flue, it is characterized in that: also comprise and be connected by described air inlet flue the particle coalescence device communicated with Benitration reactor, in described particle coalescence device, being provided with the product whirlpool plate for making soot dust granule turbulization whirlpool; The edge of described product whirlpool plate is provided with dentalation.
2. denitrating flue gas dust arrester according to claim 1, is characterized in that: the profile of tooth of described dentalation is the one or more kinds of combinations in triangle, square, trapezoidal or arc.
3. denitrating flue gas dust arrester according to claim 1, is characterized in that: described product whirlpool plate is triangular in shape, rectangle, trapezoidal, " L " shape, " Z " shape, serpentine or ellipse.
4. denitrating flue gas dust arrester according to claim 1, is characterized in that: the bottom of described particle coalescence device is connected with the ash bucket for degassed discharge, and the cross-sectional area of described ash bucket reduces from top to bottom gradually.
5. denitrating flue gas dust arrester according to claim 1, is characterized in that: the gas approach place of described particle coalescence device is connected with the flue for being connected with economizer.
6. denitrating flue gas dust arrester according to claim 1, is characterized in that: described Benitration reactor is SCR denitration reactor, and described air inlet flue is connected with heat exchanger, and described heat exchanger is provided with the flow regulator of the flow for regulating heat transferring medium.
7. denitrating flue gas dust arrester according to claim 6, is characterized in that: described heat exchanger is pipe heat exchanger.
8. denitrating flue gas dust arrester according to claim 7, is characterized in that: described heat transferring medium is liquid, and the flue gas in described air inlet flue flows outward at the pipe of described heat exchanger, and described heat transferring medium is at the Bottomhole pressure of described heat exchanger.
9. denitrating flue gas dust arrester according to claim 8, is characterized in that: described flow regulator is arranged in the input duct of described heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804495.9U CN204294116U (en) | 2014-12-16 | 2014-12-16 | Denitrating flue gas dust arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804495.9U CN204294116U (en) | 2014-12-16 | 2014-12-16 | Denitrating flue gas dust arrester |
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| Publication Number | Publication Date |
|---|---|
| CN204294116U true CN204294116U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420804495.9U Active CN204294116U (en) | 2014-12-16 | 2014-12-16 | Denitrating flue gas dust arrester |
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| CN (1) | CN204294116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797653A (en) * | 2021-08-30 | 2021-12-17 | 华能秦煤瑞金发电有限责任公司 | Denitration reactor non-maintaining dust collector |
-
2014
- 2014-12-16 CN CN201420804495.9U patent/CN204294116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797653A (en) * | 2021-08-30 | 2021-12-17 | 华能秦煤瑞金发电有限责任公司 | Denitration reactor non-maintaining dust collector |
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