CN203771433U - Smoke efficient dust removal system for coal-fired power plant - Google Patents

Smoke efficient dust removal system for coal-fired power plant Download PDF

Info

Publication number
CN203771433U
CN203771433U CN201420165610.2U CN201420165610U CN203771433U CN 203771433 U CN203771433 U CN 203771433U CN 201420165610 U CN201420165610 U CN 201420165610U CN 203771433 U CN203771433 U CN 203771433U
Authority
CN
China
Prior art keywords
coal
flue gas
multiclone
dust removal
fired plant
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.)
Active
Application number
CN201420165610.2U
Other languages
Chinese (zh)
Inventor
彭维明
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.)
Qingdao Shijie new energy thermal power Co., Ltd.
Original Assignee
彭维明
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 彭维明 filed Critical 彭维明
Priority to CN201420165610.2U priority Critical patent/CN203771433U/en
Application granted granted Critical
Publication of CN203771433U publication Critical patent/CN203771433U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides a smoke efficient dust removal system for a coal-fired power plant. The smoke efficient dust removal system for the coal-fired power plant is arranged between a boiler and a chimney of the coal-fired power plant and used for removing dust in smoke exhausted from the coal-fired power plant. The smoke efficient dust removal system comprises an economizer, a denitration reactor, an air preheater and a desulfurizing tower, wherein the economizer, the denitration reactor, the air preheater and the desulfurizing tower are sequentially communicated. The economizer is communicated with the boiler. The desulfurizing tower is communicated with the chimney. The smoke efficient dust removal system further comprises a multi-tube cyclone separator which is arranged between the economizer and the chimney and used for removing dust in smoke exhausted from the coal-fired power plant. The smoke efficient dust removal system for the coal-fired power plant is reasonable in design, according to the smoke exhausted from the coal-fired power plant, the multi-tube cyclone separator is adopted and arranged between the economizer and the chimney, dust is removed from smoke, the requirement for purification efficiency of the system can be met through the multi-tube cyclone separator, and therefore smoke exhausted from the coal-fired power plant can reach the corresponding emission standard.

Description

Coal-fired plant flue gas high-efficiency dust removal system
Technical field
The utility model relates to waste gas purification technical field, relates in particular to a kind of coal-fired plant flue gas high-efficiency dust removal system.
Background technology
Along with becoming increasingly conspicuous of China's problem of environmental pollution, especially haze weather is to people's life and healthy day by day serious impact, the further discharge of reduction pollutant, the raising discharge standard brought.Therefore, following coal-fired power plant must reach the discharge standard of fuel gas generation.
After flue gas out must pass through dedusting, desulfurization and denitration after coal-fired power plant's boiler combustion, the flue gas reaching after discharge standard just can enter atmosphere.From boiler, flue gas passes through economizer, Benitration reactor, air preheater, booster fan, desulfurizing tower successively, finally enters chimney and enters atmosphere.Patent document CN200710092757.8 discloses a kind of flue gas denitrating technique with preposed whirlwind beforehand dust removal SCR, but its dust removing effects is bad, can not be suitable for so huge flue gas flow of coal-burning power plant at all, can not reach discharge standard.
Although the flue gas of coal-burning power plant has been taked to corresponding processing, due to backward in technique, remove not thoroughly, the flue gas that coal-burning power plant discharges still can not meet the discharge capacity severe overweight of dust in discharge standard, especially flue gas.
Utility model content
The purpose of this utility model is to provide a kind of coal-fired plant flue gas high-efficiency dust removal system, the dust of discharging in flue gas for coal-burning power plant is further processed, by setting up multiclone, under the prerequisite that meets operating efficiency, coal-burning power plant is discharged to dust in flue gas and thoroughly remove, make the flue gas of discharge reach corresponding discharge standard.
The utility model is achieved through the following technical solutions:
A kind of coal-fired plant flue gas high-efficiency dust removal system, be arranged between the boiler and chimney of coal-burning power plant, the flue gas of discharging for removing coal-burning power plant, comprise the economizer, Benitration reactor, air preheater and the desulfurizing tower that are communicated with successively, described economizer is communicated with described boiler, and described desulfurizing tower is communicated with described chimney, also comprises multiclone, described multiclone is arranged between described economizer and described chimney, for removing the dust of coal-fired plant flue gas.
In aforementioned system, described multiclone is arranged between described economizer and described Benitration reactor; Also can be arranged between described air preheater and described desulfurizing tower; Can also be arranged between desulfurizing tower and chimney.Before described multiclone is arranged on Benitration reactor, both can dedusting, also can prevent wearing and tearing and the obstruction of denitrating catalyst, improve denitration efficiency.If denitrating catalyst is serious wear due to dust, generally move 1 year and must change very expensive catalyst afterwards.
Aforementioned system also can further comprise the second multiclone, described the second multiclone is arranged between described desulfurizing tower and described chimney, as demister, to remove from desulfurizing tower acid droplet, gypsum rain, sulfuric acid rain and particle out, and there is dustproof function.
Aforementioned system also comprises electrostatic precipitator, and described electrostatic precipitator is arranged between described air preheater or multiclone and described desulfurizing tower, for coal-fired plant flue gas is carried out to dedusting.Before described multiclone is arranged on described electrostatic precipitator, can be used as a kind of pre-dedusting, reduce the burden of electrostatic precipitator, and can reduce the progression of electrostatic precipitator, reduce auxiliary power consumption.Generally before electrostatic precipitator, dust is approximately 30g/m 3above.If but adopted multiclone, the dust before electrostatic precipitator could be reduced to 1g/m 3below.
As a kind of embodiment wherein, in the time that system is provided with the second multiclone, also can between air preheater or multiclone and desulfurizing tower, electrostatic precipitator be set, the flue gas of coal-burning power plant is carried out to final dusting.
As a kind of embodiment wherein, described multiclone is external hanging type or built-in.Each separator of external hanging type multiclone is pressure vessel, and shared landform is large, but its pressure drop is low.And each separator of built-in multiclone is not pressure vessel, shared landform area is little, but pressure drop is larger.
As a kind of embodiment wherein, described external hanging type multiclone comprises the tangential entry cyclone cylinder that a more parallel arranges; Described built-in multiclone comprises vane type cyclone cylinder or the tangential entry cyclone cylinder that a more parallel arranges.As a kind of embodiment wherein, described multiclone also comprises public inlet plenum, the public discharge chamber of sealing and the public dust chamber of sealing of sealing;
Described public inlet plenum is communicated with the air inlet of described tangential entry cyclone cylinder or vane type cyclone cylinder, and described tangential entry cyclone cylinder or vane type cyclone cylinder are communicated with described public dust chamber and described public discharge chamber.
As a kind of embodiment wherein, described tangential entry cyclone cylinder comprises: housing, around the inner chamber of tubbiness that forms sealing;
Tangential entry, is arranged on the top of described housing, is communicated with described inner chamber along the tangential direction of described housing;
Blast pipe, inside and outside described housing, described housing top is stretched out in upper end, and the bottom of the inner chamber of described housing formation is stretched in lower end, for discharging by the flue gas after dedusting.
As a kind of embodiment wherein, described tangential entry cyclone cylinder also comprises bottom cone and hopper;
Cone one end, described bottom connects described housing, the other end is communicated with described hopper, the junction of described bottom cone and described hopper is provided with anti-mixed wimble device, and described anti-mixed wimble device is fixed on described hopper, for preventing that the dust of hopper is blown or escapes out.
As a kind of embodiment wherein, the inner diameter D x of the bottom port of described bottom cone should meet following relational expression through optimizing to calculate:
D x=(1~4.4) d; Wherein, d is the internal diameter of described blast pipe.
As a kind of embodiment wherein, the inner diameter D of described housing 1should meet relational expression through optimizing to calculate: d=(0.22~0.54) D 1.
As a kind of embodiment wherein, described anti-mixed wimble device should be no more than 1000mm with the vertical range H3 of described hopper import department through optimizing calculating.
As a kind of embodiment wherein, the vertical range H2 of the bottom import of described blast pipe and described tangential entry bottom is in 2 meters.
As a kind of embodiment wherein, the bottom outer diameter D of described anti-mixed wimble device 0be not less than the internal diameter of described blast pipe, i.e. D 0>=d.
Work as D x, D 1, D 0and described vertical range is while meeting above-mentioned condition, flue gas is when through multiclone, and pressure drop is smaller, and the rotary speed of whirlpool core is higher, and system has higher efficiency of dust collection, and can effectively save energy.In the time not meeting above-mentioned condition, during due to flue gas process multiclone, pressure drop ratio is larger, and the rotary speed of whirlpool core is lower, the inefficiency of flue gas ash removal.
As a kind of embodiment wherein, the irregular polyhedrons that the flat board that described anti-mixed wimble device is cone, do not limit the Rotary-table of cone crop, cylinder, thickness or thickness are not limit.
As a kind of embodiment wherein, described vane type cyclone cylinder comprises: cylindrical shell, inlet channel, outlet passageway and blade;
Described cylindrical shell is around the cavity that forms sealing; Described inlet channel is arranged on the upper end of described cylindrical shell, connects described cavity;
Described blade screw is fixed on described outlet passageway and connects the inwall of described cylindrical shell, the formation helical duct that matches with described outlet passageway and described cylindrical shell, and described helical duct one end is communicated with described inlet channel, and the other end is communicated with described cavity; The lower end of described cylindrical shell is provided with dust-exhausting port.
As a kind of embodiment wherein, also comprise heat exchanger, described heat exchanger is arranged in described public dust chamber or on its locular wall, for reclaiming the heat of the public house dust of gathering dust.
As a kind of embodiment wherein, described multiclone and described economizer are integral type setting, in economizer, set up multicyclone separator, make economizer have the function of economizer and multiclone concurrently simultaneously.
Aforementioned multiclone can arrange according to the demand of system space, level, inclination or vertically layout all can, the center line of multiclone and horizontal angle a are 0 °-360 °.In the time that a is 90 °, the dust removing effects of multiclone is best.
Compared with prior art, the utility model coal-fired plant flue gas high-efficiency dust removal system is reasonable in design, by multiclone being set between economizer and chimney, dust in flue gas is removed comparatively thorough, thereby the flue gas that coal-burning power plant is discharged reach corresponding discharge standard.
Multiclone is arranged between economizer and Benitration reactor, can make the overwhelming majority (95%-97%) dust entering in denitration flue gas before efficiently be separated, to ensure reliable, the effective and stability of coal-burning power plant's denitration, reduce the use amount of wearing and tearing, obstruction and the liquefied ammonia of denitrating catalyst, also reduce obstruction and the equipment attrition of air preheater simultaneously; In addition, also make the dust that enters electrostatic precipitator reduce greatly, can reduce the progression of electrostatic precipitator in coal-fired power plant, thereby reduce investment and the auxiliary power consumption of electrostatic precipitator equipment, even can substitute electrostatic precipitator.
If multiclone is arranged between air preheater and electrostatic precipitator, can remove in advance the larger particle of part particle diameter in flue gas, reduce the sum of series power plant power consumption rate of electrostatic dust collection equipment, even can substitute electrostatic precipitator, reduce the negative effect of flying dust to deduster upstream device and technical process.
Multiclone is arranged between desulfurizing tower and chimney and had both can be used as demister use, effectively remove from desulfurizing tower acid droplet, gypsum rain, sulfuric acid rain and particle out, also there is dustproof function simultaneously.This,, to reducing the discharge intensity of coal-burning power plant's tail flue gas pollutant, implements national environmental protection standard and especially improves the vitality important in inhibiting of key area coal-burning power plant of China.
Brief description of the drawings
Fig. 1 is the structural representation of coal-fired plant flue gas high-efficiency dust removal system the first embodiment of the present utility model;
Fig. 2 is the structural representation of coal-fired plant flue gas high-efficiency dust removal system the second embodiment of the present utility model;
Fig. 3 is the structural representation of coal-fired plant flue gas high-efficiency dust removal system the 3rd embodiment of the present utility model;
Fig. 4 is the structural representation of a kind of embodiment of multiclone;
Fig. 5 is the structural representation of another embodiment of multiclone;
Fig. 6 is the structural representation of a kind of embodiment of tangential entry cyclone cylinder;
Fig. 7 is the structural representation of a kind of embodiment of vane type cyclone cylinder;
Fig. 8 is the structural representation of the 4th embodiment of coal-fired plant flue gas high-efficiency dust removal system of the present utility model;
Fig. 9 is the structural representation of the 5th embodiment of coal-fired plant flue gas high-efficiency dust removal system of the present utility model;
Figure 10 is the wherein air inlet arrangement figure of a kind of embodiment of external hanging type multicyclone;
Figure 11 is the wherein air inlet arrangement figure of a kind of embodiment of external hanging type multicyclone;
Figure 12 is the wherein air inlet arrangement figure of a kind of embodiment of external hanging type multicyclone;
Figure 13 is the partial enlarged drawing of Fig. 6;
Figure 14 is the structural representation of the first embodiment of anti-mixed wimble device;
Figure 15 is the structural representation of the second embodiment of anti-mixed wimble device;
Figure 16 is the structural representation of the 3rd embodiment of anti-mixed wimble device;
Figure 17 is the structural representation of the 4th embodiment of anti-mixed wimble device;
Figure 18 is the tube structure schematic diagram of built-in multiclone the first embodiment;
Figure 19 is the tube structure schematic diagram of built-in multiclone the second embodiment;
Figure 20 is that external hanging type multiclone is arranged in parallel mode schematic diagram;
Figure 21 is that built-in polyhedron multiclone is arranged in parallel mode schematic diagram;
Figure 22 is that built-in post-centrum multiclone is arranged in parallel mode schematic diagram;
Figure 23 is external hanging type multiclone series connection set-up mode schematic diagram;
Figure 24 is a kind of series connection of built-in polyhedron multiclone set-up mode schematic diagram;
Figure 25 is the another kind of series connection of built-in polyhedron multiclone set-up mode schematic diagram;
Figure 26 is a kind of series connection of built-in post-centrum multiclone set-up mode schematic diagram;
Figure 27 is the another kind of series connection of built-in post-centrum multiclone set-up mode schematic diagram;
Figure 28 is the arrangement schematic diagram that multiclone and economizer are set to one;
Figure 29 is the arrangement schematic diagram of built-in multiclone;
Figure 30 is the partial enlarged drawing of Fig. 7;
Figure 31 is the structural representation of coal-fired plant flue gas high-efficiency dust removal system the 6th embodiment of the present utility model;
Figure 32 is the structural representation of coal-fired plant flue gas high-efficiency dust removal system the 7th embodiment of the present utility model;
Figure 33 is the arrangement schematic diagram of multiclone the first embodiment;
Figure 34 is the arrangement schematic diagram of multiclone the second embodiment;
Figure 35 is the arrangement schematic diagram of the third embodiment of multiclone;
Figure 36 is the arrangement schematic diagram of the 4th kind of embodiment of multiclone.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, by the following examples, and by reference to the accompanying drawings, coal-fired plant flue gas high-efficiency dust removal system of the present utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
At present, in coal-burning power plant's discharge flue gas, dust removes the standard that can not reach national requirements, make floating a large amount of dust in air, cause the generation of haze weather, because prior art is relatively backward, cannot reach predetermined technique effect, for this reason, native system, with reference to Fig. 1, a kind of coal-fired plant flue gas high-efficiency dust removal system, for removing the dust of power at the flue gas of the coal-burning power plant of 10MW-3500MW scope, connect and be communicated with between the boiler 100 and chimney 1000 of coal-burning power plant, boiler 100 is communicated with economizer 200, economizer 200 is communicated with Benitration reactor 300, Benitration reactor 300 is communicated with air preheater 500, air preheater 500 is communicated with desulfurizing tower 900, desulfurizing tower 900 is communicated with chimney 1000.
It should be noted that coal-fired plant flue gas high-efficiency dust removal system of the present utility model also comprises multiclone 600, multiclone 600 can be arranged on the optional position between economizer 200 and chimney 1000.When the flue gas that coal-burning power plant produces passes through multiclone 600, dust in flue gas is separated, and multiclone 600 has higher efficiency compared to common separator, under the prerequisite that meets coal-fired plant flue gas removal efficiency demand by the dust separation in the flue gas of its generation out.And the flue gas that coal-burning power plant produces also passes through the processing layer by layer of economizer 200, Benitration reactor 300, air preheater 500 and desulfurizing tower 900, makes the gas of its discharge meet the relevant criterion of national requirements.
As Figure 8-9, as a kind of embodiment wherein, multiclone 600 is arranged between Benitration reactor 300 and economizer 200, the 95%-97% dust entering in Benitration reactor 300 flue gas is before separated, to ensure reliable, the effective and stability of coal-burning power plant's denitration, avoid denitrating catalyst due to dust the more phenomenon of catalyst changeout of serious wear, operation certain hour, reduce the use amount of liquefied ammonia, also reduce obstruction and the equipment attrition of air preheater 500 simultaneously.Preferably, also comprise electrostatic precipitator 700, electrostatic precipitator 700 is arranged between air preheater 500 and desulfurizing tower 900.The dust that enters electrostatic precipitator 700 that is arranged so that of multiclone 600 reduces greatly, can reduce the progression of electrostatic precipitator in coal-fired power plant 700, thereby reduces investment and the auxiliary power consumption of electrostatic precipitator 700 equipment.Economizer 200 also can be designed to multicyclone separator, is set to one (referring to Figure 28) by multiclone 600 and economizer 200, makes economizer have the function of economizer and multiclone concurrently simultaneously.
As Figure 2-3, as a kind of embodiment wherein, in the present embodiment, multiclone 600 is arranged between air preheater 500 and desulfurizing tower 900, carries out special dedusting first for ash-laden gas.Preferably, also comprise electrostatic precipitator 700, electrostatic precipitator 700 is arranged between multiclone 600 and desulfurizing tower 900.Generally before electrostatic precipitator 700, dust is approximately 30g/m 3above, if but adopt multiclone 600, the dust before electrostatic precipitator 700 can be reduced to 1g/m 3below, that is to say, multiclone 600 can remove more than 97% dust in flue gas.Multiclone 600 is removed the larger particle of part particle diameter in flue gas in advance, can reduce the sum of series power plant power consumption rate of electrostatic precipitator 700, reduces the negative effect of dust to upstream device and technical process.Flue gas after multiclone 600 dedustings enters electrostatic precipitator 700, and electrostatic precipitator 700 is carried out secondary separation to the dust in flue gas, then enters desulfurizing tower 900 desulfurization.
Wherein, multiclone 600 can use separately; Also the use (referring to Figure 23-27) that multiple multiclones 600 can be together in series, separates the dust in flue gas more thoroughly; Or by use (referring to Figure 20-22) in parallel multiple multiclones 600, according to coal-fired plant flue gas amount or dust concentration is enabled or stop using one or more multiclones 600.
Shown in figure 32, multiclone 600 can also be arranged between desulfurizing tower 900 and chimney 1000, for demist and dedusting.Preferably, also comprise electrostatic precipitator 700, electrostatic precipitator 700 is arranged between air preheater 500 and desulfurizing tower 900.
As shown in figure 31, as a kind of embodiment wherein, above-mentioned coal-fired plant flue gas high-efficiency dust removal system also comprises the second multiclone 1200, the second multiclone 1200 is arranged between desulfurizing tower 900 and chimney 1000, as demister, for removing from desulfurizing tower 900 acid droplet, gypsum rain, sulfuric acid rain and particle out, also there is the function of dedusting simultaneously.Adopt multiclone 600, the second multiclone 1200 and electrostatic precipitator 700 to carry out multistage dedusting to the flue gas of coal-burning power plant, dust removing effects is better simultaneously.
As a kind of embodiment wherein, above-mentioned multiclone 600 can be external hanging type, as shown in Figure 4, comprises the tangential entry cyclone cylinder 630 that a more parallel arranges; Multiclone 600 can also be built-in (shown in Fig. 5,29), comprises vane type cyclone cylinder 631 or a tangential entry cyclone cylinder 630 that more parallel arranges that a more parallel arranges.Built-in multiclone 600(is referring to Figure 18-19), its upper external housing both can be cylinder, also can be arbitrary polyhedron, for example, square or cuboid etc.Its underpart external shell both can be cone, also can be any multiaspect reverse taper.
Above-mentioned multiclone 600 comprises public inlet plenum 610, the public discharge chamber 620 of sealing and the public dust chamber 640 of sealing of sealing.Wherein, public inlet plenum 610 is communicated with the air inlet of tangential entry cyclone cylinder 630 or vane type cyclone cylinder 631, and tangential entry cyclone cylinder 630 or vane type cyclone cylinder 631 are communicated with public dust chamber 640 and public discharge chamber 620.Ash-laden gas enters tangential entry cyclone cylinder 630 in parallel or the air inlet of vane type cyclone cylinder 631 after entering public inlet plenum 610, then discharge from the public discharge chamber 620 being communicated with tangential entry cyclone cylinder 630 or vane type cyclone cylinder 631, in this process, dust in flue gas is separated under the effect of tangential entry cyclone cylinder 630 or vane type cyclone cylinder 631, flue gas after dedusting is discharged from public discharge chamber 620, and isolated dust falls under gravity into public dust chamber 640.If multiclone 600 is built-in, flue gas can enter public inlet plenum 610 from its sidewall, also can enter from its top public inlet plenum 610, flue gas after dedusting can flow out (referring to Figure 25,27) from the sidewall of public discharge chamber 620, also can flow out (referring to Figure 24,26) from the top of public discharge chamber 620.Preferably, can heat exchanger (not shown) be set public dust chamber 640 is interior, or be arranged on the locular wall of public dust chamber 640, for reclaiming the heat of public dust chamber 640 interior dusts.The air inlet of external hanging type multicyclone can be arranged symmetrically with, be arranged in juxtaposition or Centralized layout (referring to Figure 10-12).
As shown in Figure 6, as a kind of embodiment wherein, above-mentioned tangential entry cyclone cylinder 630 comprises housing 6316, tangential entry 6315 and blast pipe 6318; Wherein, housing 6316 is around the tubbiness inner chamber that forms sealing; Tangential entry 6315 is arranged on the top of housing 6316, is communicated with along the tangential direction of housing 6316 inner chamber that housing 6316 forms; Blast pipe 6318 be fixed on housing 6316 tops and run through housing 6316 inside and outside, housing 6316 is stretched out in its upper end, the bottom of the inner chamber that housing 6316 forms is stretched in lower end, for discharging the flue gas after dedusting.The air inlet of blast pipe 6318 is positioned at tangential entry 6315 bottoms following 0~2 meter (referring to Fig. 6), can be cone, cylinder or circular cone-cylinder assembly, and its inside is without any racemization structure.
When the flue gas producing when coal-burning power plant enters from tangential entry 6315 inner chamber that housing 6316 forms, because tangential entry 6315 is on the tangent line of housing 6316, do circumferential movement so enter the flue gas of housing 6316 along the outer wall of housing 6316, the rear disengaging flue gas of dust collision housing 6316 of flue gas the inside falls, thereby dust is isolated from flue gas.Tangential entry cyclone cylinder 630 also comprises bottom cone 6317 and hopper 6319, and cone 6317 one end in bottom connect housing 6316, and the other end is communicated with hopper 6319, and isolated dust falls into hopper 6319 through bottom cone 6317 under the effect of gravity.The junction of bottom cone 6317 and hopper 6319 is provided with anti-mixed wimble device 6310, anti-mixed wimble device 6310 is fixed on hopper 6319, anti-mixed wimble device 6310 can be supported and fixed on hopper 6319 by pole, also can be supported and fixed on hopper 6319 by plate, prevent that the dust being removed from sneaking into flue gas again, taken away away from hopper 6319 is interior.
Preferably, as shown in figure 13, anti-mixed wimble device 6310 is no more than 1000mm with the vertical range H3 of hopper 6319 import departments.(referring to Figure 14-17) anti-mixed wimble device 6310 can be cylinder, can also be the irregular polyhedrons do not limit of flat board, cone, thickness that thickness is not limit or by the Rotary-table of cone crop, its bottom outer diameter D 0be not less than the internal diameter of blast pipe 6318, i.e. D 0>=d.
Preferably, the inner diameter D of the bottom port of bottom cone 6317 xmeet following relational expression:
D x=(1~4.4)d;
Wherein, d is the internal diameter of blast pipe 6318.
Preferably, the inner diameter D of housing 6316 1meet relational expression: d=(0.22~0.54) D 1, wherein d is the internal diameter of blast pipe 6318.
Because flue gas exists pressure drop after multiclone 600, therefore the de-dirt Efficiency Decreasing of flue gas, can between electrostatic precipitator 700 and desulfurizing tower 900, blower fan 800 be set, blower fan 800 can provide mobile power for flue gas, accelerates the de-dirt speed of flue gas.
As shown in Figure 7, as a kind of embodiment wherein, above-mentioned vane type cyclone cylinder 631 comprises cylindrical shell 6326, inlet channel 6325, outlet passageway 6320 and blade 6321.Wherein, cylindrical shell 6326 is around the cavity that forms sealing; Inlet channel 6325 is arranged on the upper end of cylindrical shell 6326, is communicated with the cavity that cylindrical shell 6326 forms; Blade 6321 spirals are fixed on the outer wall of outlet passageway 6320 and connect the inwall of cylindrical shell 6326, formation helical duct matches with the outer wall of outlet passageway 6320 and the inwall of cylindrical shell 6326, helical duct one end is communicated with inlet channel 6325, and the other end is communicated with the cavity of cylindrical shell 6326; The lower end of cylindrical shell 6326 is provided with dust-exhausting port 6328, when ash-laden gas enters after inlet channel 6325, enter the cavity of cylindrical shell 6326 through described helical duct, when ash-laden gas moves along helical duct, the dust of flue gas the inside separates and falls into the dust-exhausting port 6328 of cylindrical shell 6326 lower ends and collects under the effect of gravity with flue gas after colliding with the wall of blade 6321 and cylindrical shell 6326 under the effect of centrifugal force, the flue gas rotation after dedusting is risen and discharged and flow to downstream unit through outlet passageway 6320.The tangent line of helical duct and the angle of horizontal direction can be 1 degree to 89 degree (seeing Figure 30).
The top of cylindrical shell 6326 can be the arbitrary polyhedrons such as cylinder, and the bottom of cylindrical shell can be cone or any multiaspect vertebral body.
As shown in Figure 33-36, above-mentioned multiclone can arrange according to the demand of system space, level, inclination or vertically layout all can, the center line of multiclone and horizontal angle a are 0 °-360 °.
The flue gas that adopts native system to produce coal-burning power plant takes off dirt, the flue gas of coal-burning power plant out enters economizer 200 from boiler 100, after reclaiming heat by economizer 200, flue gas flows into Benitration reactor 300, flue gas flows into air preheater 500 after Benitration reactor 300 denitrogenations, after air preheater 500 reduces the temperature of flue gas, flue gas flows into desulfurizing tower 900, desulfurizing tower 900 is to flue gas desulfurization, then flue gas through chimney 1000 discharged to atmosphere, multiclone 600 can be arranged on the optional position between economizer 200 and chimney 1000, flue gas is carried out to dedusting, can also between air preheater 500 and desulfurizing tower 900, electrostatic precipitator 700 be set, electrostatic precipitator 700 has dust removing effects equally, by each device to gas cleaning, make it to meet the standard of relevant regulations.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims (22)

1. a coal-fired plant flue gas high-efficiency dust removal system, be arranged between the boiler (100) and chimney (1000) of coal-burning power plant, the flue gas of discharging for purifying coal-burning power plant, comprise the economizer (200) being communicated with successively, Benitration reactor (300), air preheater (500) and desulfurizing tower (900), described economizer (200) is communicated with described boiler (100), described desulfurizing tower (900) is communicated with described chimney (1000), it is characterized in that, also comprise multiclone (600), described multiclone (600) is arranged between described economizer (200) and described chimney (1000), for removing the dust of coal-fired plant flue gas.
2. coal-fired plant flue gas high-efficiency dust removal system according to claim 1, is characterized in that, described multiclone (600) is arranged between described economizer (200) and described Benitration reactor (300).
3. coal-fired plant flue gas high-efficiency dust removal system according to claim 1, is characterized in that, described multiclone (600) is arranged between described air preheater (500) and described desulfurizing tower (900).
4. coal-fired plant flue gas high-efficiency dust removal system according to claim 1, is characterized in that, described multiclone (600) is arranged between desulfurizing tower (900) and chimney (1000).
5. according to the coal-fired plant flue gas high-efficiency dust removal system described in claim 2 or 3, it is characterized in that, also comprise the second multiclone (1200), described the second multiclone (1200) is arranged between described desulfurizing tower (900) and described chimney (1000), for demist dedusting.
6. according to the coal-fired plant flue gas high-efficiency dust removal system described in claim 2-4 any one, it is characterized in that, also comprise electrostatic precipitator (700), described electrostatic precipitator (700) is arranged between described air preheater (500) or multiclone (600) and described desulfurizing tower (900), for coal-fired plant flue gas is carried out to dedusting.
7. coal-fired plant flue gas high-efficiency dust removal system according to claim 5, it is characterized in that, also comprise electrostatic precipitator (700), described electrostatic precipitator (700) is arranged between described air preheater (500) or multiclone (600) and described desulfurizing tower (900), for coal-fired plant flue gas is carried out to final dusting.
8. according to the coal-fired plant flue gas high-efficiency dust removal system described in claim 2-4 any one, it is characterized in that, described multiclone (600) is external hanging type or built-in.
9. coal-fired plant flue gas high-efficiency dust removal system according to claim 8, is characterized in that, the multiclone (600) of described external hanging type comprises the tangential entry cyclone cylinder that a more parallel arranges; Described built-in multiclone (600) comprises vane type cyclone cylinder or the tangential entry cyclone cylinder that a more parallel arranges.
10. coal-fired plant flue gas high-efficiency dust removal system according to claim 9, it is characterized in that, described multiclone (600) also comprises public inlet plenum (610), the public discharge chamber (620) of sealing and the public dust chamber (640) of sealing of sealing;
Described public inlet plenum (610) is communicated with the air inlet of described tangential entry cyclone cylinder or vane type cyclone cylinder, and described tangential entry cyclone cylinder or vane type cyclone cylinder are communicated with described public dust chamber (640) and described public discharge chamber (620).
11. coal-fired plant flue gas high-efficiency dust removal systems according to claim 9, is characterized in that, the tangential entry cyclone cylinder of described multiclone comprises: housing (6316), around the inner chamber that forms the tubbiness sealing;
Tangential entry (6315), is arranged on the top of described housing (6316), is communicated with described inner chamber along the tangential direction of described housing (6316);
Blast pipe (6318), inside and outside described housing (6316), described housing (6316) top is stretched out in upper end, and the bottom of the inner chamber of described housing (6316) formation is stretched in lower end, for discharging by the flue gas after dedusting.
12. coal-fired plant flue gas high-efficiency dust removal systems according to claim 11, is characterized in that, the tangential entry cyclone cylinder of described multiclone also comprises bottom cone (6317) and hopper (6319);
Described bottom cone (6317) one end connects described housing (6316), the other end is communicated with described hopper (6319), described bottom cone (6317) is provided with anti-mixed wimble device (6310) with the junction of described hopper (6319), it is upper that described anti-mixed wimble device (6310) is fixed on described hopper (6319), is blown or escapes out for the dust that prevents hopper (6319).
13. coal-fired plant flue gas high-efficiency dust removal systems according to claim 12, is characterized in that, the inner diameter D of the bottom port of described bottom cone (6317) xmeet following relational expression:
D x=(1~4.4)d;
Wherein, d is the internal diameter of described blast pipe (6318).
14. coal-fired plant flue gas high-efficiency dust removal systems according to claim 13, is characterized in that, the inner diameter D of described housing (6316) 1meet relational expression: d=(0.22~0.54) D 1.
15. coal-fired plant flue gas high-efficiency dust removal systems according to claim 12, is characterized in that, described anti-mixed wimble device (6310) is no more than 1000mm with the vertical range of described hopper (6319) import department.
16. coal-fired plant flue gas high-efficiency dust removal systems according to claim 12, is characterized in that, the vertical range of described blast pipe (6318) bottom import and described tangential entry bottom is in 2 meters.
17. coal-fired plant flue gas high-efficiency dust removal systems according to claim 13, is characterized in that, the bottom outer diameter D of described anti-mixed wimble device (6310) 0be not less than the internal diameter of described blast pipe (6318), i.e. D 0>=d.
18. coal-fired plant flue gas high-efficiency dust removal systems according to claim 17, it is characterized in that the irregular polyhedrons that the flat board that described anti-mixed wimble device (6310) is cone, do not limit the Rotary-table of cone crop, cylinder or thickness or thickness are not limit.
19. coal-fired plant flue gas high-efficiency dust removal systems according to claim 9, is characterized in that, described vane type cyclone cylinder comprises: cylindrical shell (6326), inlet channel (6325), outlet passageway (6320) and blade (6321);
Described cylindrical shell (6326) is around the cavity that forms sealing; Described inlet channel (6325) is arranged on the upper end of described cylindrical shell (6326), connects described cavity;
Described blade (6321) spiral is fixed on described outlet passageway (6320) goes up and connects the inwall of described cylindrical shell (6326), formation helical duct matches with described outlet passageway (6320) and described cylindrical shell (6326), described helical duct one end is communicated with described inlet channel (6325), and the other end is communicated with described cavity; The lower end of described cylindrical shell (6326) is provided with dust-exhausting port (6328).
20. coal-fired plant flue gas high-efficiency dust removal systems according to claim 10, it is characterized in that, also comprise heat exchanger, described heat exchanger is arranged in described public dust chamber (640) or on its locular wall, for reclaiming the heat of the interior dust of public dust chamber (640).
21. coal-fired plant flue gas high-efficiency dust removal systems according to claim 2, is characterized in that, described multiclone (600) is integral type setting with described economizer (200).
22. coal-fired plant flue gas high-efficiency dust removal systems according to claim 9, is characterized in that, described multiclone (600) is level, inclination or vertically arranges, its center line and horizontal angle a are 0 °-360 °.
CN201420165610.2U 2014-04-04 2014-04-04 Smoke efficient dust removal system for coal-fired power plant Active CN203771433U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420165610.2U CN203771433U (en) 2014-04-04 2014-04-04 Smoke efficient dust removal system for coal-fired power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420165610.2U CN203771433U (en) 2014-04-04 2014-04-04 Smoke efficient dust removal system for coal-fired power plant

Publications (1)

Publication Number Publication Date
CN203771433U true CN203771433U (en) 2014-08-13

Family

ID=51288622

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420165610.2U Active CN203771433U (en) 2014-04-04 2014-04-04 Smoke efficient dust removal system for coal-fired power plant

Country Status (1)

Country Link
CN (1) CN203771433U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994455A (en) * 2014-04-04 2014-08-20 彭维明 System and method for efficiently removing dust in flue gas of coal-fired power plant
CN104451006A (en) * 2014-12-11 2015-03-25 山东钢铁股份有限公司 Pea coal pulverizing system and pea coal pulverizing method
CN112675647A (en) * 2019-10-17 2021-04-20 汤秉辉 Oil-gas separating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994455A (en) * 2014-04-04 2014-08-20 彭维明 System and method for efficiently removing dust in flue gas of coal-fired power plant
CN104451006A (en) * 2014-12-11 2015-03-25 山东钢铁股份有限公司 Pea coal pulverizing system and pea coal pulverizing method
CN112675647A (en) * 2019-10-17 2021-04-20 汤秉辉 Oil-gas separating device

Similar Documents

Publication Publication Date Title
CN201353468Y (en) Cyclone pulse filter cylinder bag type dust remover
CN203771433U (en) Smoke efficient dust removal system for coal-fired power plant
CN101628201A (en) Clearing device for smoke pollutants of glass kiln and clearing method thereof
CN201371041Y (en) Flue gas dust-removing and denitrifying device
CN102172468A (en) Three-pass dedusting devulcanizer
CN201899951U (en) Combined dust removal and environment protection equipment for flue gas of smelting furnace
CN205913932U (en) Novel spray column
CN103994455A (en) System and method for efficiently removing dust in flue gas of coal-fired power plant
CN101721175B (en) Bag type dust collector with novel air inlet mode and airflow distribution structure
CN101972594B (en) Water-covered type dedusting and desulphuration method and device
CN203209177U (en) Wet type electrostatic precipitator for blast furnace gas
CN105484788A (en) Dry-wet-combining multi-stage dust removing device for mine
CN205936766U (en) Automobile emission purification device
CN202410810U (en) Ultrafine grinding dust collecting device for producing dye
CN201543343U (en) Bag type dust collector with novel gas intake mode and novel airflow distribution structure
CN203771436U (en) Smoke efficient purification device for coal-fired power plant
CN2250815Y (en) Efficient composite multi-pipe cyclone collector
CN105854428A (en) Multistage spiral-flow type ultra-clean dust removal device
CN201108786Y (en) Pocket type collector
CN201664565U (en) Two-stage dust remover
CN203664039U (en) Cyclone dust collector
CN206560790U (en) Integrative environmentally-friendly equipment for dry desulfurization dedusting
CN205340456U (en) Flue gas dust removal system
CN201366309Y (en) Boiler smoke dust desulfuring and dedusting purifier
CN203750322U (en) Compact long bag type dust collector

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20171204

Address after: Shinan District 266073 Shandong city of Qingdao province Yinchuan road 67 Animation Industrial Park E block 403

Patentee after: Qingdao Shijie new energy thermal power Co., Ltd.

Address before: Norway City No. 48 Desitelunlu Hugh inferior ears, Nuo Daoer 5236.

Patentee before: Peng Weiming

TR01 Transfer of patent right