CN206837686U - A kind of sack cleaner flue gas recirculation heating system - Google Patents

A kind of sack cleaner flue gas recirculation heating system Download PDF

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Publication number
CN206837686U
CN206837686U CN201720453916.1U CN201720453916U CN206837686U CN 206837686 U CN206837686 U CN 206837686U CN 201720453916 U CN201720453916 U CN 201720453916U CN 206837686 U CN206837686 U CN 206837686U
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China
Prior art keywords
pipe
flue gas
sack cleaner
hot cigarette
valve
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CN201720453916.1U
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Chinese (zh)
Inventor
张苏安
郭飞龙
秦维
王祥
陶伟平
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Anhui New Power Electric Industry High-Tech Co Ltd
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Anhui New Power Electric Industry High-Tech Co Ltd
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Abstract

The utility model discloses a kind of sack cleaner flue gas recirculation heating system, belongs to incineration flue gas draining technology field, the problem of which solving existing flue gas dust collecting system high energy consumption.The utility model includes smoke-intake pipe, sack cleaner and pipe, and described sack cleaner is arranged between described smoke-intake pipe and pipe, and hot cigarette outlet pipe is provided with described smoke-intake pipe;Hot cigarette inlet pipe is provided with described pipe;It is connected with each other between described hot cigarette inlet pipe and described hot cigarette outlet pipe by the flue gas heater, the hot cigarette blower fan that are arranged in series.The utility model reduces energy consumption, monitors temperature change in real time, flue gas disengaging equalized temperature, it is impacted because condensing to avoid sack cleaner due to using circulating flue gas heating technique.

Description

A kind of sack cleaner flue gas recirculation heating system
Technical field
The utility model belongs to incineration flue gas draining technology field, specifically, is related to a kind of sack cleaner flue gas and follows Ring heating system.
Background technology
A large amount of flue gases can be produced by being burned in life production, contain a large amount of dust in flue gas, be directly discharged into air and environment is produced Raw serious pollution, therefore need to filter by deduster before flue gas is discharged into air.Conventional smoke duster is bag-type dust Device, sack cleaner are a kind of dry type dust filtration devices.It is applied to trap tiny, dry, non-fiber dust.Filter bag is using spinning The filter cloth knitted or nonwoven felt using the filtration of fabric to dusty gas into being filtered, work as dusty gas Into after sack cleaner, particle is big, heavy dust, because the effect of gravity settles down, ash bucket is fallen into, containing thinner For the gas of small dust when passing through filtrate, dust is purified gas by detention.Sack cleaner have the advantage that including, Efficiency of dust collection is high, and typically more than 99%, house outlet gas dust content is within every cubic metre of tens of micrograms, to sub-micro The thin dirt in grain of rice footpath has higher classification efficiency;Wide, the small only 1 the number of minutes cubic meter of the scope of air quantity is handled, big is reachable 1 point The tens thousand of cubic meters of clock, can be not only used for the flue gas ash removal of industrial furnace, reduce the discharge of atmosphere pollution;It is simple in construction, safeguard behaviour Facilitate;On the premise of same high efficiency of dust collection is ensured, cost is less than electric cleaner;Using glass fibre, polytetrafluoroethylene (PTFE), During the high temperature resistance filtration materials such as P84, it can be run under more than 200 DEG C hot conditions;It is insensitive to the characteristic of dust, not by dust and The influence of resistance.Sack cleaner shortcoming is the flue gas knot because exhaust gas temperature is low in boiler startup or relatively low blowing out duty ratio Dew, which produces condensate, easily influences the use of sack cleaner.
Chinese Patent Application No. 200420073645.X, the patent document in publication date on October 5th, 2005, discloses one kind Cloth bag moisture condensation resisting device for cloth bag dust collector, it is made up of sack cleaner connecting tube, dust exhaust apparatus connecting tube, intermediate heat exchanger, Reducing temperature and humidity device, dehydrator, heating drier on being sequentially connected between dust exhaust apparatus connecting tube and sack cleaner connecting tube, The left and right end of reducing temperature and humidity device passes through the right side of the intermediate heat exchanger with heating drier, left end by inner and outer rings circulating line respectively Connection, compressor is set on outer shroud circulating line.The cloth bag moisture condensation resisting device for cloth bag dust collector is simple in construction, it is easy to make, and leads to Crossing reduction dust humidity and control degree of drying prevents sack cleaner from condensing, and improves the service life of sack cleaner and removes Dirt efficiency, it can be widely used for the sack cleaner that multiple fields use.Technical scheme disclosed in the patent provides a kind of to cloth The technology of bag dust collector air intake heating, is suitable for dust pelletizing system pipe arrangement and is configured initial stage, and uses the technology to solve There is the problem of sack cleaner causes condensation because flue-gas temperature is too low on pipeline, improvement cost is higher, is not belonging to preferred plan.
Chinese Patent Application No. 201320486652.1, the publication date 2014 year 2 month patent document of 12 days, discloses one kind Sack cleaner anti-condensation device, include casing, the casing sidepiece is provided with dusty gas entrance, and the lower box is set Discharge valve is equipped with, the box house is provided with dust-removal cloth-bag, and the dust-removal cloth-bag is suitable for reading to be connected with blowing device, the injection Device is arranged on pressure duct, and the pressure duct is provided with pulse valve and electric control system, and the pressure duct is set It is connected in box house and with the compressed gas source interface outside casing, the compressed gas source interface is provided with pressure duct Electric heater unit, the casing top are provided with clean gas floss hole.The utility model is passed through using high-temperature cleaning industrial exhaust heat After crossing electrical heating, as sack-duster pulse rapping air-flow, because the pulse gas temperature is higher than 100 DEG C, so as to solve at all Vapor dew phenomenon is certainly met, the caking that gathers dust is avoided, so as to effectively improve dust collection effect.Technical side disclosed in the utility model Case structure is more complicated, and use cost is higher, while the cost of replacing sack cleaner also compares in existing dust pelletizing system Height, thus need to be further improved the existing flue gas dust collecting system using common sack cleaner.
From the point of view of the technology of for example above-mentioned patent application publication of prior art, the existing flue gas ash removal system using sack cleaner How complicated system is, use cost is high, the shortcomings that energy consumption is larger also be present.
The content of the invention
1st, to solve the problems, such as
The problem of causing high energy consumption because sack cleaner easily blocks for existing flue gas dust collecting system, the utility model provide A kind of sack cleaner flue gas recirculation heating system, due to using circulating flue gas heating technique, reduce boiler and play heater stage cloth The probability that bag blocks, temperature change is monitored in real time, improve the flue-gas temperature into cloth bag, avoid sack cleaner because condensation is made Into blocking.2nd, technical scheme
To solve the above problems, the utility model adopts the following technical scheme that.
A kind of sack cleaner flue gas recirculation heating system, including smoke-intake pipe, sack cleaner and pipe, described cloth Bag dust collector is arranged between described smoke-intake pipe and pipe, and hot cigarette outlet pipe is provided with described smoke-intake pipe;Described goes out Hot cigarette inlet pipe is provided with smoke pipe;Flue gas between described hot cigarette inlet pipe and described hot cigarette outlet pipe by being arranged in series Device, hot cigarette blower fan are connected with each other.
Preferably, described hot cigarette blower fan is arranged on described hot cigarette inlet pipe side.
Preferably, it is provided with described hot cigarette inlet pipe into cigarette valve.
Preferably, it is provided with counterflow-preventing valve in described hot cigarette outlet pipe.
Preferably, described counterflow-preventing valve and the described cigarette valve that enters are electric-control stop valve.
Preferably, in addition to valve positioner and temperature sensor;Described temperature sensor is arranged in pipe;Institute The valve positioner stated by electric wire respectively with described temperature sensor, described enter cigarette valve, described counterflow-preventing valve Connection.
Preferably, described flue gas heater is high-low pressure steam double fluid preheater.
Preferably, smoke exhaust fan is arranged at described pipe and hot cigarette inlet pipe tie point to the smoke exhaust pipe between chimney On.
3rd, beneficial effect
Compared to prior art, the beneficial effects of the utility model are:
(1) the utility model enters cloth after heating by recycling original flue gas in cleaning shaft by following bad airduct Bag dust collector, the temperature in sack cleaner is improved, prevent from influenceing the normal use of sack cleaner because of smoke condensation;Due to It is heated flue gas and derives from flue tail, there is certain temperature, the external world needs only provide for very low heat energy and followed again with regard to that can improve The temperature of ring flue gas, the flying dust in flue gas is avoided to block cloth bag because temperature is low, therefore the utility model can be in furnace lifting mistake Also dust is controlled in journey well, reduces the discharge of pollutant during furnace lifting;When sack cleaner blocks, air inducing can be caused Acc power increases, and increase air-introduced machine load, is likely to result in air inducing damage and chaser situation occurs, and causes furnace lifting to fail;This reality Flue-gas temperature is improved with new transformation, avoids cloth bag from blocking so that air-introduced machine is the peace of boiler in working under normal load Complete start provides guarantee;
(2) the hot cigarette blower fan of the utility model is arranged on hot cigarette inlet pipe side and avoids the high-temperature flue gas after heating through overheating cigarette wind Machine accelerates blower fan aging;
(3) the utility model, which enters the setting of cigarette valve, to adjust heating system in good time according to the situation of circulating flue gas temperature Switch, at utmost to reduce energy consumption;
(4) setting of the utility model counterflow-preventing valve can prevent that, when heating system disables, flue gas is inverse in smoke-intake pipe It is advanced into hot cigarette outlet pipe;
(5) the utility model counterflow-preventing valve and to enter cigarette valve be electric-control stop valve, and pass through valve positioner and temperature Sensor Electricity Federation is spent, is entered by flue-gas temperature in temperature sensor Real-time Feedback pipe with obtaining accurate holding sack cleaner The effect of mouth and outlet flue equalized temperature, while can further reduce energy consumption;
(6) the utility model flue gas heater is high-low pressure steam double fluid preheater, successively can pass through low-pressure steam, height Pressure steam step-by-step is heated to obtain the flue gas of equilibrium temperature;
(7) the utility model smoke exhaust fan is arranged on pipe and hot cigarette inlet pipe tie point to the smoke exhaust pipe between chimney Influence of the smoke exhaust fan to circulating flue gas equalized temperature can be reduced.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure:1st, smoke-intake pipe;2nd, sack cleaner;3rd, pipe;4th, counterflow-preventing valve;5th, hot cigarette outlet pipe;6th, flue gas adds Hot device;7th, hot cigarette blower fan;8th, valve positioner;9th, hot cigarette inlet pipe;10th, cigarette valve is entered;11st, temperature sensor;12nd, Smoke Machine;13rd, smoke exhaust pipe;14th, chimney.
Embodiment
The utility model is further described below with reference to specific embodiment.
Embodiment 1
As shown in figure 1, a kind of sack cleaner flue gas recirculation heating system, including smoke-intake pipe 1, sack cleaner 2, smoke Pipe 3, smoke exhaust fan 12, smoke exhaust pipe 13 and chimney 14,
Described sack cleaner 2 is arranged between described smoke-intake pipe 1 and pipe 3, and described smoke exhaust fan 12 is set Put between described pipe 3 and described smoke exhaust pipe 13;Described chimney 14 is connected with described smoke exhaust pipe 13;
Hot cigarette outlet pipe 5 is provided with described smoke-intake pipe 1;Hot cigarette inlet pipe 9 is provided with described pipe 3;Described It is connected with each other between hot cigarette inlet pipe 9 and described hot cigarette outlet pipe 5 by the flue gas heater 6, the hot cigarette blower fan 7 that are arranged in series;And Described hot cigarette blower fan 7 is arranged on the described hot side of cigarette inlet pipe 9;
It is provided with described hot cigarette inlet pipe 9 into cigarette valve 10;Counterflow-preventing valve 4 is provided with described hot cigarette outlet pipe 5; Described counterflow-preventing valve 4 is electric-control stop valve with the described cigarette valve 10 that enters;
For the intelligent control realized counterflow-preventing valve 4 He enter cigarette valve 10, reach the effect for saving energy consumption, the present embodiment In also include valve positioner 8 and temperature sensor 11;Described temperature sensor 11 is arranged in pipe 3;Described valve Door controller 8 by electric wire respectively with described temperature sensor 11, described enter cigarette valve 10, described counterflow-preventing valve 4 Connection.
The operation principle of the sack cleaner flue gas recirculation heating system of the present embodiment is the normal work of sack cleaner 2 When in the presence of smoke exhaust fan 12, cigarette is entered by smoke-intake pipe 1, discharged after the dust removal by filtration of sack cleaner 2 from pipe 3, Air is discharged into by chimney 14 after smoke exhaust pipe 13;When temperature sensor is detected at a temperature below valve positioner 8 in pipe 3 During design temperature, valve positioner 8 controls to be opened into cigarette valve 10 and counterflow-preventing valve 4, while hot cigarette blower fan 7 starts, from Flue gas is extracted in pipe 3, enters sack cleaner 2 from smoke-intake pipe 1 again after the heating of flue gas heater 6, to balance cloth Temperature needed for normal work in bag dust collector 2.
The present embodiment carries out heating and heat preservation after heating using original flue gas in cleaning shaft is recycled to sack cleaner Processing, it is easy to keep sack cleaner outlet and inlet temperature balance, boiler startup can improve sack cleaner and enter initial stage Mouth flue-gas temperature, prevent from influenceing the normal use of sack cleaner because of smoke condensation;Followed due to being heated flue gas from interior Ring, it is possible to keep higher flue-gas temperature for a long time, more existing heating system has the low effect of obvious energy consumption.
Embodiment 2
A kind of sack cleaner flue gas recirculation heating system, on the basis of embodiment 1, described flue gas heater 6 is High-low pressure steam double fluid preheater;
Described high-low pressure steam double fluid preheater includes smoke conveying duct, is once set on smoke conveying duct low Press steam around pipe and high steam around pipe, by inputted respectively in pipe around pipe and high steam to low-pressure steam low-pressure steam and High steam, to realize the stepped heating of flue gas in smoke conveying duct.

Claims (8)

1. a kind of sack cleaner flue gas recirculation heating system, including smoke-intake pipe(1), sack cleaner(2)And pipe(3), Described sack cleaner(2)It is arranged on described smoke-intake pipe(1)And pipe(3)Between, it is characterised in that:Described enters cigarette Pipe(1)On be provided with hot cigarette outlet pipe(5);Described pipe(3)On be provided with hot cigarette inlet pipe(9);Described hot cigarette inlet pipe(9) With described hot cigarette outlet pipe(5)Between pass through the flue gas heater that is arranged in series(6), hot cigarette blower fan(7)It is connected with each other.
A kind of 2. sack cleaner flue gas recirculation heating system according to claim 1, it is characterised in that:Described hot cigarette Blower fan(7)It is arranged on described hot cigarette inlet pipe(9)Side.
A kind of 3. sack cleaner flue gas recirculation heating system according to claim 1, it is characterised in that:Described hot cigarette Inlet pipe(9)On be provided with into cigarette valve(10).
A kind of 4. sack cleaner flue gas recirculation heating system according to claim 3, it is characterised in that:Described hot cigarette Outlet pipe(5)On be provided with counterflow-preventing valve(4).
A kind of 5. sack cleaner flue gas recirculation heating system according to claim 4, it is characterised in that:Described is anti-reverse Flow valve(4)Enter cigarette valve with described(10)It is electric-control stop valve.
A kind of 6. sack cleaner flue gas recirculation heating system according to claim 5, it is characterised in that:Also include valve Controller(8)And temperature sensor(11);Described temperature sensor(11)It is arranged on pipe(3)It is interior;Described valve control Device processed(8)By electric wire respectively with described temperature sensor(11), described enter cigarette valve(10), described counterflow-preventing valve (4)Connection.
A kind of 7. sack cleaner flue gas recirculation heating system according to claim 1-6 any one, it is characterised in that: Described flue gas heater(6)For high-low pressure steam double fluid preheater.
A kind of 8. sack cleaner flue gas recirculation heating system according to claim 7, it is characterised in that:Smoke exhaust fan (12)It is arranged at described pipe(3)With hot cigarette inlet pipe(9)Tie point is to chimney(14)Between smoke exhaust pipe(13)On.
CN201720453916.1U 2017-04-27 2017-04-27 A kind of sack cleaner flue gas recirculation heating system Active CN206837686U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720453916.1U CN206837686U (en) 2017-04-27 2017-04-27 A kind of sack cleaner flue gas recirculation heating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720453916.1U CN206837686U (en) 2017-04-27 2017-04-27 A kind of sack cleaner flue gas recirculation heating system

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Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108480042A (en) * 2018-03-08 2018-09-04 马鞍山钢铁股份有限公司 Fume dust remover and its dust collecting process
WO2021128108A1 (en) * 2019-12-25 2021-07-01 深圳市能源环保有限公司 Bag filter heating system for waste incineration power plant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108480042A (en) * 2018-03-08 2018-09-04 马鞍山钢铁股份有限公司 Fume dust remover and its dust collecting process
WO2021128108A1 (en) * 2019-12-25 2021-07-01 深圳市能源环保有限公司 Bag filter heating system for waste incineration power plant

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