CN207307492U - A kind of thermal power plant treating flour dust system - Google Patents
A kind of thermal power plant treating flour dust system Download PDFInfo
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- CN207307492U CN207307492U CN201721340754.7U CN201721340754U CN207307492U CN 207307492 U CN207307492 U CN 207307492U CN 201721340754 U CN201721340754 U CN 201721340754U CN 207307492 U CN207307492 U CN 207307492U
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Abstract
The utility model discloses a kind of thermal power plant treating flour dust system, including pedestal, water system, air supply system, two phase flow nozzle and air-suction duct, formed with settling chamber in the pedestal, the two phase flow nozzle is arranged in the top of the settling chamber, the water system and air supply system are connected with the two phase flow nozzle respectively, the air-suction duct is docked with the inlet end of the settling chamber, and the air-suction duct is equipped with wind turbine.The utility model reaches micron order by the water mist for adjusting supply, pressure of supply water makes to gush out, change mist amount size by adjusting nozzle usage quantity, change the wetability of water by adding surfactant, the micron order water mist of ejection will collide with dust, coat etc. and settling after effect, finally realize the effect of spray for dust suppression.The utility model cost is low, energy consumption is few, and air purification effect is notable, is especially suitable for the purification of respirable dust surrounding air.
Description
Technical field
It the utility model is related to thermal power plant dust atmosphere and administer field, and in particular to a kind of thermal power plant dust is controlled
Reason system.
Background technology
In recent years, developing rapidly with Chinese society economy, problem of environmental pollution become more serious, not only haze sky
The frequency that gas occurs is higher and higher, also more amid a sharp increase than in the past in the order of severity, and the dust that thermal power industry is discharged
Occupy sizable proportion.
In power industry the most wide a kind of occupational hazardous particulate matter silica dust of harmfulness highest and harm face generally refer to
Quartz is the dust of the free silicon dioxide of representative.The silica dust of thermal power plant is usually the powder containing less than 10% free silicon dioxide
Dirt (national regulation highest permissible discharge mass concentration is 10mg/m3), diameter account for 73% less than 5 μm.The inspection around boiler
Worker because needing cat ladder to ascend a height, it is sometimes desirable to beat burnt clear powder, labor intensity is larger, the dust total amount just corresponding increase of contact, inspection
Repair operation needs to be engaged in heavier manual labor into confined space sometimes, and dust exposure concentration is higher, and free silicon dioxide is dense
Degree is big, and grit dispersion degree is high, and the influence to workers ' health is also maximum.In addition, in thermal power plant, defeated coal, unload coal, powder system processed
System contain fire coal unload, transport, sieving, crushing, conveying, the complicated link such as powder processed, these places easily produce a large amount of dust.
Dust pollution has not only broken up working environment, has influenced workers ' health, can also bring security risk, influences full factory's security civilization life
Production.With the appearance of national environmental protection new standard, the problem of new is brought to Coal Conveying System of Power Plant treating flour dust.Dust pollution pair
People's is physically and mentally healthy very harmful, and treating flour dust is significant.Existing cleaner is mainly the following：
The first, the mixture of ash and air, is mainly extracted into bag filter, passes through cloth bag by bag filter
Filtration, ash is separated with air, and air through negative-pressure air fan outlet inside cloth bag by being discharged into air, and ash is due to the work of gravity
With falling into Hui Ku through blocking valve.Have the following disadvantages：(1) cloth bag water imbibition is big, easy fouling, not antistatic, not fire-retardant, long
Phase work aeration is poor, influences dust removing effects；(2) deduster produces secondary pollution in deashing process；(3) deduster deashing is not
Rationally and energy loss can not caused in section's class hour；(4) the easy aging of equipment, maintenance cost is high, and maintenance load is big, service life
It is short, and floor space is larger；(5) when pollution sources disperse, dust is difficult to collect, and works as some characteristic dust (such as：Coal dust
Dirt) when reaching a certain concentration, it will explode in high temperature, naked light, electric spark, friction, situation about hitting；(6) filtrate is selected
When must take into consideration the characteristic of dusty gas, generally require its filtrate to have the features such as wear-resisting, corrosion resistant, resistance are low, service life is long, from
And add the manufacturing expense of filter bag；(7) property of filtrate determines that bag filter has limitation relative to dust；(8)
Regulation effect is poor, although discharge value reaches 50 milligrams/cubic metre of country's permission, the improvement index at pollution scene does not reach
10 milligrams/cubic metre of national regulation.
Second, electric precipitator, when mainly dusty gas passes through high-voltage electrostatic field, makes grit charged, in electric field force
Under effect, charged grit is deposited on circuit board, after dust deposit is to certain thickness, is shaken by rapping and fall on ash
Ash is drained in bucket and by ash-valve, so as to achieve the purpose that dedusting.Have the following disadvantages：(1) once investment is high, and steel disappear
Consumption is big；(2) electric precipitator usually requires that higher manufacture installation accuracy, otherwise it cannot be guaranteed that it normally and efficiently runs；(3) it is electric
Deduster is relatively low and floor space is larger due to field gas velocity；(4) electric precipitator there are certain requirements handled dust, suitable
Dust beyond suitable scope, will have corresponding measure using electric precipitation, and just can guarantee that necessary dust removal performance.
The third, power-free dust-removing is maximum using pressure balance and closed loop circulation style with aerodynamic principle
The pressure of the reduction blanking bucket class dust air of limit, is allowed to tend to balance with external air pressure.Material can be produced when falling
Raw substantial amounts of negative-pressure air-flow, dust is under the guiding of negative-pressure air-flow, the shuttling movement in confined space, hits pressure plare, straight line
Movement is changed into curvilinear motion, reduces the potential energy of itself, dirt lowers under gravity, to achieve the purpose that dedusting.In the presence of
Following shortcoming：(1) investment is big；(2) dust catching rate is low；(3) horizontal pipe easily blocks, and influences capture rate；(4) purification efficiency compared with
Low (being usually 40% to 50%)；(5) take up a large area.
4th kind, single-fluid high pressure dry fog dedusting, by higfh-tension ceramics plunger pump, pressurizes water through piping, by height
Nozzle atomization is pressed, dirt pits has been connected to by pipeline, to achieve the purpose that dedusting.Have the following disadvantages：(1) nozzle is easy
Block；(2) equipment failure rate is high, and maintenance cost is high；(3) for the dust of sports equipment, playing the regulation effect of dirt pits can only reach
To 30% to 40%；(4) due to spray nozzle clogging, pipe joint easily pops；(5) safety coefficient is low, since equipment is
Water is pressurized to 6MP-8MP with high-pressure pump, once pipe explosion or washing open, field personnel can be damaged and scene is set
It is standby to cause unnecessary loss；(6) requirement to the degree of purity at water source is high；(7) filter easily blocks.
Standard level, powder are not reached still since various cleaners have deficiency, the dust index in thermal power plant above
Dirt is administered extremely urgent.
Utility model content
The purpose of the utility model be propose one kind can the air pollution of comprehensive integrated treatment thermal power plant ask
Topic, so as to reach the thermal power plant treating flour dust system that power plant integrated environment improves.
In order to solve the above technical problems, treating flour dust system in thermal power plant provided by the utility model, including pedestal,
Water system, air supply system, two phase flow nozzle and air-suction duct, the pedestal are interior formed with settling chamber, the two phase flow nozzle
The top of the settling chamber is arranged in, the water system and air supply system are connected with the two phase flow nozzle respectively, the suction
Wind pipeline is docked with the inlet end of the settling chamber, and the air-suction duct is equipped with wind turbine.
Further, the water system includes water tank, metering pump and water diverter, and the water tank is dry by supplying water
Road is connected with the metering pump and water diverter successively, the water supply main line be equipped with water ga(u)ge, water filter, water pressure gauge and
Water pressure maintaining valve, the water diverter separate a plurality of water supply branch, and the water supply branch is equipped with water shunting valve.
Further, the water tank is equipped with activating agent adding mouth, surfactant adding set and the activating agent
Adding mouth is docked, filled with the SAS anion tables that mass concentration is 0.04%-0.06% in the surfactant adding set
Face activating agent.
Further, the air supply system includes air accumulator, air compressor machine and gas current divider, the gas outlet of the air compressor machine with
The air accumulator is connected, and the air accumulator is connected by supplying main line with the gas current divider, and the supply main line is equipped with
Air gauge, air-flow gauge and gas pressure maintaining valve, the gas current divider separate a plurality of supply branch, and the supply branch is equipped with qi leel
Flow valve.
Further, the two phase flow nozzle is installed on the top of the settling chamber, the top surface of the stent by stent
For net structure, the two phase flow nozzle is evenly distributed at the cross-point of net structure and injection direction is towards the deposition
Room, the supply branch are connected with the air inlet of two phase flow nozzle, and the water supply branch is connected with the air inlet of two phase flow nozzle.
Further, the two phase flow nozzle is equipped with controlling switch.
Further, the side wall of the settling chamber is equipped with the observation window being made of clear material.
Further, the air pressure adjustment scope of the air compressor machine is 0.2-0.4Mpa, and the hydraulic pressure of the metering pump adjusts model
Enclose for 0.1-0.3Mpa.
Further, the height of the stent and the mesh size of net structure adjust.
A kind of thermal power plant method for treating flour dust, using above-mentioned thermal power plant treating flour dust system, including following step
Suddenly：
Step 1, by dust occur point dusty gas be delivered to by wind turbine in settling chamber；
Step 2, adjust two phase flow nozzle quantity, and adjusts water system and air supply system, is allowed to meet that current dust-laden is empty
The purification demand of gas, micron order water mist and the dusty gas of ejection collide, reunite and settle, it is purified after gas by sinking
The outlet side discharge of product room；
Step 3, fall to haze the indoor residue of deposition and cleared up in time, prevents the generation of reentrainment of dust.
Compared with prior art, the beneficial effects of the utility model are：
(1) dust particles around dust point or in slype are sucked into by gas-liquid two-phase by the air suction function of wind turbine
Flow below device, be convenient for focusing on；Using the thermal power plant treating flour dust system nozzle lower zone of the utility model
Domain air humidity can rapid saturation, have extremely strong seizure effect to dust particles, dust concentration can be by 8000ug/m3It is down to
56ug/m3, deposition effect is good.
(2) by being equipped with surfactant adding set at the top of water tank, surfactant is lived for SAS anionic surfaces
Property agent, this activating agent good water solubility, there is good wetting, emulsification, scattered, foam and dirt-removing power, and biology drop in hard water
Solution property is good, harmless.
(3) by setting optimal gas-liquid pressure, it is possible to achieve droplet it is micronized, good dust removing effects can be reached；
(4) by varying biphase gas and liquid flow nozzle quantity to be applicable in the dust atmosphere of various concentrations；
(5) by adjusting the switch on air water flow divider, the layout type of spraying can be changed；
(6) the system water consumption, air consumption are extremely low, are only 1/3rd or so of common biphase gas and liquid flow device；
(7) except haze is efficient, the improvement to respirable dust can reach more than 95%；
(8) system assembles are convenient and applied widely, can fast construction, can be applied to aggravate the industry that haze is formed
The place such as area or construction site.
In conclusion the utility model reaches micron order by the water mist for adjusting supply, pressure of supply water makes to gush out, pass through
Nozzle usage quantity is adjusted to change mist amount size, changes the wetability of water, the micron order of ejection by adding surfactant
Water mist will collide with dust, coat etc. and settling after effect, finally realize the effect of spray for dust suppression, have that cost is low, energy consumption
The advantages of few, and air purification effect is notable, be especially suitable for the purification of respirable dust surrounding air.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is supporting structure schematic diagram in the utility model；
Fig. 3 is the top view of stent in the utility model；
Fig. 4 is the side view of stent in the utility model.
Embodiment
The utility model is further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1-Fig. 4, a kind of thermal power plant treating flour dust system, including pedestal 1, water system, air supply system, two
Mutually stream nozzle 2 and air-suction duct 3, pedestal 1 is interior to be arranged in the top of settling chamber 4 formed with closed settling chamber 4, two phase flow nozzle 2
Portion, water system and air supply system are connected with the water inlet and air inlet of two phase flow nozzle 2 respectively, and two in settling chamber 4 are opposite
Side wall on be respectively equipped with air inlet port and gas outlet port, air-suction duct 3 is docked with the air inlet port of settling chamber, in aspiration channel
Road 3 is equipped with wind turbine, and wind turbine sucks dusty gas in settling chamber, the utility model by adjust gas-water pressure and spray amount into
And change nozzle atomization performance, spraying fine water-spray of the particle diameter less than 10 μm collides with dusty gas, reunites, Ran Houchen
Drop, it is purified after gas discharged by gas outlet, the material of deposition can be from the deposit discharge groove discharge on pedestal.This practicality
The biphase gas and liquid flow nozzle that new middle two phase flow spraying device is produced using Foshan Ke companies, to provide fine water
Mist.
Specifically, two phase flow nozzle 2 is installed on the top of settling chamber 4 by stent 5, the top surface of stent 5 is net structure,
The height of stent 5 and the mesh size of net structure can be adjusted freely, to adapt to different purification requirements.Two phase flow nozzle 2
It is evenly distributed at the cross-point of net structure and injection direction is towards settling chamber 4.Water system includes water tank 6, metering pump 7
And water diverter 8, water tank 6 are connected with metering pump 7 and water diverter 8 successively by water supply main line 9, water supply main line 9 is equipped with
Water ga(u)ge, water filter, water pressure gauge and water pressure maintaining valve, water diverter 8, which separates, a plurality of to be connected with 2 water inlet of two phase flow nozzle
Water supply branch 10, is equipped with water shunting valve on each water supply branch 10.Air supply system includes air accumulator 11, air compressor machine 12 and qi leel stream
Device 13, the gas outlet of air compressor machine 12 are connected with air accumulator 11, and air accumulator 11 is connected by supplying main line 14 with gas current divider 13,
Supply main line 14 is equipped with air gauge, air-flow gauge and gas pressure maintaining valve, and gas current divider 13 separates a plurality of and 2 air inlet of two phase flow nozzle
The supply branch 15 of mouth connection, gas flow divider is equipped with supply branch 15, wherein, the air pressure adjustment scope of air compressor machine 12 is
0.2-0.4Mpa, the hydraulic pressure adjustable range of metering pump 7 is 0.1-0.3Mpa.
To improve the wettability of water, water tank 6 is equipped with activating agent adding mouth, surfactant adding set and activity
Agent adding mouth is docked, and it 0.05% is SAS anion surface actives to be filled with mass concentration in surfactant adding set
Agent, this activating agent good water solubility, there is good wetting, emulsification, scattered, foam and dirt-removing power in hard water, and biodegradable
Property is good, harmless.
In the utility model, controlling switch is equipped with two phase flow nozzle 2, can be according to the haze amount in environment to adjust
The number of nozzle number opened.
For convenience of observation deposition effect, the observation window being made of clear material is equipped with the side wall of settling chamber.
A kind of thermal power plant method for treating flour dust, includes the following steps：
Step 1, by thermal power plant treating flour dust system install Mr. Yu's aerated area in, external dust is sent out by wind turbine
Dust laden air in raw point or slype is sucked into interior positioned at the lower section of two phase flow nozzle 2 to settling chamber 4；
Step 2, adjust 2 quantity of two phase flow nozzle, and adjusting gas-water pressure parameter makes air pressure be 0.3Mpa, hydraulic pressure 0.2Mpa,
The water of certain pressure is gentle to enter two phase flow nozzle 2 from both sides respectively, and relative velocity is very big between gas-liquid two-phase, in narrow and small effect
Collided and be atomized in cavity, produced particle diameter less than 10 μm and adjustable high speed water mist particle, ejection contain surface
The fine water-spray of activating agent collides with dusty gas, reunites and settles, it is purified after gas by settling chamber outlet side
Discharge；
Step 3, fall to haze the indoor residue of deposition and cleared up in time, prevents the generation of reentrainment of dust.
It can be satisfied rapidly using the thermal power plant treating flour dust system nozzle lower zone air humidity of the utility model
And have extremely strong seizure effect to dust particles, dust concentration can be by 8000ug/m3It is down to 56ug/m3, deposition effect is good.
Claims (9)
- A kind of 1. thermal power plant treating flour dust system, it is characterised in that：Including pedestal, water system, air supply system, two phase flow Nozzle and air-suction duct, the pedestal is interior formed with settling chamber, and the two phase flow nozzle is arranged in the top of the settling chamber, institute State water system and air supply system to connect with the two phase flow nozzle respectively, the air-suction duct and the inlet end of the settling chamber Docking, the air-suction duct are equipped with wind turbine.
- 2. treating flour dust system in thermal power plant according to claim 1, it is characterised in that：The water system includes storage Water pot, metering pump and water diverter, the water tank are connected with the metering pump and water diverter successively by water supply main line, institute State water supply main line and be equipped with water ga(u)ge, water filter, water pressure gauge and water pressure maintaining valve, the water diverter separates a plurality of branch that supplies water Road, the water supply branch are equipped with water shunting valve.
- 3. treating flour dust system in thermal power plant according to claim 2, it is characterised in that：The water tank, which is equipped with, lives Property agent adding mouth, surfactant adding set is docked with the activating agent adding mouth, in the surfactant adding set Filled with the SAS anion surfactants that mass concentration is 0.04%-0.06%.
- 4. the thermal power plant treating flour dust system according to Claims 2 or 3, it is characterised in that：The air supply system bag Air accumulator, air compressor machine and gas current divider are included, the gas outlet of the air compressor machine is connected with the air accumulator, and the air accumulator passes through Supply main line is connected with the gas current divider, and the supply main line is equipped with air gauge, air-flow gauge and gas pressure maintaining valve, the gas Current divider separates a plurality of supply branch, and the supply branch is equipped with gas flow divider.
- 5. treating flour dust system in thermal power plant according to claim 4, it is characterised in that：The two phase flow nozzle passes through Stent is installed on the top of the settling chamber, and the top surface of the stent is net structure, and the two phase flow nozzle is evenly distributed on At the cross-point of net structure and injection direction connects towards the settling chamber, the air inlet of the supply branch and two phase flow nozzle Logical, the water supply branch is connected with the air inlet of two phase flow nozzle.
- 6. treating flour dust system in thermal power plant according to claim 5, it is characterised in that：Set on the two phase flow nozzle There is controlling switch.
- 7. treating flour dust system in thermal power plant according to claim 5, it is characterised in that：On the side wall of the settling chamber Equipped with the observation window being made of clear material.
- 8. treating flour dust system in thermal power plant according to claim 5, it is characterised in that：The air pressure tune of the air compressor machine Adjusting range is 0.2-0.4Mpa, and the hydraulic pressure adjustable range of the metering pump is 0.1-0.3Mpa.
- 9. treating flour dust system in thermal power plant according to claim 5, it is characterised in that：The height and net of the stent The mesh size of shape structure adjusts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721340754.7U CN207307492U (en) | 2017-10-18 | 2017-10-18 | A kind of thermal power plant treating flour dust system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721340754.7U CN207307492U (en) | 2017-10-18 | 2017-10-18 | A kind of thermal power plant treating flour dust system |
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| CN207307492U true CN207307492U (en) | 2018-05-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107519715A (en) * | 2017-10-18 | 2017-12-29 | 湘潭大学 | A kind of thermal power plant treating flour dust system and method |
| CN109173667A (en) * | 2018-09-25 | 2019-01-11 | 内蒙古弘睿节能科技有限公司 | A kind of full-automatic three-level desulfation dust-extraction device |
| CN109173531A (en) * | 2018-09-29 | 2019-01-11 | 标胜环球（天津）实业有限公司 | Quantum dissociates methane gas cleaner |
-
2017
- 2017-10-18 CN CN201721340754.7U patent/CN207307492U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107519715A (en) * | 2017-10-18 | 2017-12-29 | 湘潭大学 | A kind of thermal power plant treating flour dust system and method |
| CN109173667A (en) * | 2018-09-25 | 2019-01-11 | 内蒙古弘睿节能科技有限公司 | A kind of full-automatic three-level desulfation dust-extraction device |
| CN109173667B (en) * | 2018-09-25 | 2023-10-13 | 内蒙古弘睿节能科技有限公司 | Full-automatic tertiary desulfurization dust collector |
| CN109173531A (en) * | 2018-09-29 | 2019-01-11 | 标胜环球（天津）实业有限公司 | Quantum dissociates methane gas cleaner |
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