CN207786202U - The device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas - Google Patents
The device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas Download PDFInfo
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- CN207786202U CN207786202U CN201820023988.7U CN201820023988U CN207786202U CN 207786202 U CN207786202 U CN 207786202U CN 201820023988 U CN201820023988 U CN 201820023988U CN 207786202 U CN207786202 U CN 207786202U
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Abstract
The utility model discloses the devices of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas, it is characterized in that, including being saturated wet flue gas pipeline, cold water spray tower, cooling equipment and the pump housing, the saturation wet flue gas pipeline provides saturation wet flue gas to the cold water spray tower, the cold water spray tower is equipped with gas inlet successively from bottom to top, harl spraying layer, demister and exhanst gas outlet, the harl sprays several spray nozzles of layer arrangement, cooling equipment is delivered in several spray nozzles of harl spraying layer after cooling down liquid coolant by the pump housing forms temperature no more than 20 DEG C, mist droplet particle size is no more than 800 μm of harl.Fine particle that can be in efficient removal coal-fired flue-gas, condensable particulate matter, improve the purification efficiency of flue gas.
Description
Technical field
The utility model belongs to the technical field of fine particle, condensable particulate matter in removing flue gas, more particularly to low temperature
The device of fine grained and condensable particle in spray cleaning coal-fired flue-gas.
Background technology
With the fast development of China's economy and society, country also all the more payes attention to ecological environment.But in recent years, greatly
Aerosol haze problem is extremely urgent, has become the environmental problem of people's " within reach ".Wherein, coal-fired power plant flue gas is arranged wantonly
It is the main reason for haze is formed to put, and in order to effectively administer atmospheric haze, country proposes the requirement of minimum discharge.It is required that fire
Coal-fired boiler in power plant uses the efficient cooperation-removal technology Based on Integrate System of multiple pollutant, keeps its Air Pollutant Emission concentration basic
Meet Gas Generator Set emission limit.
Inhalable particles and fine grain improvement are fully paid attention to as a result,.Wherein, Chinese patent
CN103230717A discloses " device that a kind of steam phase transformation condensation promotes the removing of PM2.5 fine particles ", is to utilize steam phase
Become the removing for promoting PM2.5.Chinese patent CN102059029A disclose " removal methods of fine particulate matter from high-humidity flue gas and its
Device " is that coupling promotes fine particle Caragana seed pests to remove in turn using steam phase transforming with Flow Technique is hit.Above method be to
Addition steam is built containing wet hypersaturated state in saturation wet flue gas, and the mechanism of particle agglomeration is steam in fine grained surface phase
Become, particles collision is grown up, these methods can not promote condensable particulate matter phase transformation coalescence, to reduce the purification effect of flue gas
Rate.
Utility model content
In order to solve the deficiencies in the prior art, one of the purpose of this utility model is to provide low temperature spray cleaning coal-fired flue-gas
The device of middle fine grained and condensable particle, fine particle that can be in efficient removal coal-fired flue-gas, condensable particulate matter, is improved
The purification efficiency of flue gas.
To achieve the goals above, the technical solution of the utility model is：
The device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas, including it is saturation wet flue gas pipeline, cold
Spray column, cooling equipment and the pump housing, the saturation wet flue gas pipeline provide saturation wet flue gas, the cold spray to the cold water spray tower
It drenches tower and is equipped with gas inlet, harl spraying layer, demister and exhanst gas outlet successively from bottom to top, if the harl sprays layer arrangement
Dry spray nozzle, cooling equipment are delivered in several spray nozzles of harl spraying layer by the pump housing after cooling down liquid coolant and form temperature
Degree is no more than 800 μm of harl no more than 20 DEG C, mist droplet particle size.
Preferably, the exhanst gas outlet connection outlet pipeline, the outlet line are equipped with smoke re-heater.
Preferably, the bottom of the cold water spray tower is equipped with the reservoir for collecting the liquid coolant in cold water spray tower.
It is further preferred that the liquid coolant in reservoir is delivered to cooling equipment by the pump housing.
It is further preferred that including water tank, the reservoir connects water level controller, and the water level controller detects liquid storage
The liquid level of liquid coolant in slot, when liquid level is excessively high, water level controller controls liquid coolant row extra in reservoir
It puts into water tank.
Preferably, the cooling equipment is made of evaporator, compressor, condenser and throttle valve, the system in cooling equipment
Cryogen followed by evaporator, compressor, condenser and throttle valve, then evaporator flow back by throttle valve, the liquid is cold
But agent is cooled down in evaporator.
It is further preferred that absorbing the water after heat or air delivery in the condenser to cooling tower or heating equipment.
The beneficial effects of the utility model are：
The utility model removal efficiency is high, and simple in structure, energy consumption is less.Based on original square law device, pass through spray
Harl is drenched, cold core, and then thermophoresis, diffusiophoresis coordinative role, efficient removal fine grained, condensable particle are formed.And spray institute
Liquid coolant is needed, can accomplish to recycle by peripheral hardware water pump and heat pump system, required liquid coolant amount is less.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is that the device of embodiment 1 sprays the dedusting curve of different temperatures harl；
Wherein：1, cold water spray tower；2, spray nozzle；3, demister；4, water level switch；5, water level controller；6, water tank；7, cigarette
Gas reheater；8, water pump；9, evaporator；10, compressor；11, condenser；12, throttle valve；13, cooling tower.
Specific implementation mode
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Herein described fine particle refers to that aerodynamic diameter is less than 10 μm of PM10, condensable particulate matter refer to
It is gaseous state before discharge, is transformed into the substance of liquid or solid granulates after discharge.
As background technology is introduced, condensable particulate matter phase transformation coalescence, flue gas can not be promoted by existing in the prior art
The low deficiency of purification efficiency, in order to solve technical problem as above, present applicant proposes in low temperature spray cleaning coal-fired flue-gas
The device of fine grained and condensable particle.
This application provides the device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas, including saturation are wet
Flue gas pipeline, cold water spray tower, cooling equipment and the pump housing, the saturation wet flue gas pipeline provide to the cold water spray tower and are saturated wet cigarette
Gas, the cold water spray tower are equipped with gas inlet, harl spraying layer, demister and exhanst gas outlet, the harl successively from bottom to top
Several spray nozzles of layer arrangement are sprayed, cooling equipment is delivered to several sprays of harl spraying layer by the pump housing after cooling down liquid coolant
Temperature is formed in mist mouth is no more than 20 DEG C, harl of the mist droplet particle size no more than 800 μm.
Preferably, the exhanst gas outlet connection outlet pipeline, the outlet line are equipped with smoke re-heater.
Preferably, the bottom of the cold water spray tower is equipped with the reservoir for collecting the liquid coolant in cold water spray tower.
It is further preferred that the liquid coolant in reservoir is delivered to cooling equipment by the pump housing.
It is further preferred that including water tank, the reservoir connects water level controller, and the water level controller detects liquid storage
The liquid level of liquid coolant in slot, when liquid level is excessively high, water level controller controls liquid coolant row extra in reservoir
It puts into water tank.
Preferably, the cooling equipment is made of evaporator, compressor, condenser and throttle valve, the system in cooling equipment
Cryogen followed by evaporator, compressor, condenser and throttle valve, then evaporator flow back by throttle valve, the liquid is cold
But agent is cooled down in evaporator.
Compressor：The pressure for promoting the gaseous refrigerant for carrying out flash-pot is conducive to liquid under room temperature to promote its boiling point
Change.
Condenser：The heat that high-pressure gaseous refrigerant is absorbed using water or air, makes its liquefaction, becomes high-pressure liquid refrigeration
Agent.
Throttle valve：Reducing pressure by regulating flow makes high pressure liquid refrigerant pressure reduction to the corresponding pressure of saturation temperature needed.
Evaporator：Low-pressure, liquid refrigerant is boiled heat absorption wherein, reduces the temperature of liquid coolant, after itself heat absorption at
Start next cycle into compressor for low-pressure gaseous refrigerant.
It is further preferred that absorbing the water after heat or air delivery in the condenser to cooling tower or heating equipment.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The technical solution of the application is described in detail in the embodiment of body.
Embodiment 1
The device of fine particle, condensable particulate matter in a kind of low temperature spray cleaning coal-fired flue-gas, as shown in Figure 1, including
Cold water spray tower 1, cooling equipment and water pump 8, cold water spray tower 1 are equipped with gas inlet, harl spraying layer, demister successively from bottom to top
3 and exhanst gas outlet.Harl sprays several spray nozzles 2 of layer arrangement, and cooling equipment is by evaporator 9, compressor 10, condenser 11 and section
Valve 12 is flowed to form, the refrigerant in cooling equipment followed by evaporator 9, compressor 10, condenser 11 and throttle valve 12, then
Evaporator 9 is flow back by throttle valve 12.If evaporator 9 by water pump 8 is delivered to harl spraying layer after cooling down liquid coolant
The harl that temperature is no more than 20 DEG C is formed in dry spray nozzle 2；It is cold that the bottom of cold water spray tower 1 is equipped with the liquid collected in cold water spray tower
But the reservoir of agent；Liquid coolant in reservoir is delivered to evaporator 9 by water pump 8.After heat being absorbed in condenser 11
Water or air delivery are to cooling tower 13.
Exhanst gas outlet connection outlet pipeline, outlet line are equipped with smoke re-heater 7.
The device further includes water tank 6, and reservoir is equipped with water level switch 4, and water level signal is delivered to water level control by water level switch 4
Device 5 processed.
The method of fine particle, condensable particulate matter, as follows in low temperature spray cleaning coal-fired flue-gas：
1) by coal-fired saturation air inlet of the wet flue gas by 1 lower part of cold water spray tower after wet desulphurization, it is passed through cold water spray tower 1
In；
2) after entering cold water spray tower 1, harl spray is carried out by each spray port of top spray nozzle 2, passes through spraying cooling
Mode cools down to coal-fired flue-gas, realizes fine grained coalescence in flue gas, condensable particle phase transformation, and then deposit to cold liquid, finally quilt
The purpose of capture；
3) pass through the desuperheated coal-fired flue-gas of cold water spray, then by the demister 3 above spray nozzle 2, particle is just left on
In cooling liquid, avoids and taken away again by flue gas；
4) coal-fired flue-gas being cleaned is discharged from the gas outlet at 1 top of cold water spray tower, into smoke re-heater 7, heating,
After be discharged；
5) coolant liquid of 1 bottom of cold water spray tower, is extracted out by peripheral hardware water pump 8 through outlet pipe, is sent into heat pump system (evaporator 9-
Compressor 10- condenser 11- throttle valve 12- evaporators 9) it is cooling, it is recycled subsequently into spray nozzle 2；
6) 1 lower part of cold water spray tower is equipped with water level controller 5 and dewatering outlet, when liquid level is more than 4 present position of water level switch,
Signal is transmitted to water level controller 5 by water level switch 4, and control dewatering outlet valve discharges water, and extra cooling water flows into below spray column 1
In water tank 6；
7) heat dissipation of heat pump system can be directly connected to 13 ventilation and heat of cooling tower.
The Fine Particles efficiency of harl spray realization is carried out as shown in Fig. 2, can be apparent using the harl of different temperatures
Find out that harl is 10~20 DEG C and makes removal efficiency highest.
Experimental verification has been carried out to harl particle size effect simultaneously and has shown that spray harl grain size should be in 200-800 μ ms
Interior, if grain size is excessive, removal efficiency is not high；If grain size be less than 200 μm, first generate harl atomization input it is higher, influence through
Ji property, and if harl grain size it is too small, it is more difficult to by subsequent demister trap detach.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (7)
1. the device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas, characterized in that including being saturated wet flue gas
Pipeline, cold water spray tower, cooling equipment and the pump housing, the saturation wet flue gas pipeline provide saturation wet flue gas to the cold water spray tower,
The cold water spray tower is equipped with gas inlet, harl spraying layer, demister and exhanst gas outlet, the harl spray successively from bottom to top
Several spray nozzles of layer arrangement, cooling equipment are delivered to several spray nozzles of harl spraying layer by the pump housing after cooling down liquid coolant
The middle temperature that formed is no more than 20 DEG C, harl of the mist droplet particle size no more than 800 μm.
2. device as described in claim 1, characterized in that the exhanst gas outlet connection outlet pipeline, on the outlet line
Equipped with smoke re-heater.
3. device as described in claim 1, characterized in that the bottom of the cold water spray tower is equipped with the liquid collected in cold water spray tower
The reservoir of body coolant.
4. device as claimed in claim 3, characterized in that the liquid coolant in reservoir is delivered to cooling by the pump housing
Equipment.
5. device as claimed in claim 3, characterized in that including water tank, the reservoir connects water level controller, the water
Level controller detects the liquid level of the liquid coolant in reservoir, and when liquid level is excessively high, water level controller controls more in reservoir
Remaining liquid coolant is emitted into water tank.
6. device as described in claim 1, characterized in that the cooling equipment is by evaporator, compressor, condenser and throttling
Valve group at, refrigerant in cooling equipment followed by evaporator, compressor, condenser and throttle valve, then by throttle valve stream
It is back to evaporator, the liquid coolant is cooled down in evaporator.
7. device as claimed in claim 6, characterized in that absorb the water after heat or air delivery in the condenser to cold
But tower or heating equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820023988.7U CN207786202U (en) | 2018-01-05 | 2018-01-05 | The device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820023988.7U CN207786202U (en) | 2018-01-05 | 2018-01-05 | The device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207786202U true CN207786202U (en) | 2018-08-31 |
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ID=63276896
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820023988.7U Active CN207786202U (en) | 2018-01-05 | 2018-01-05 | The device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014578A (en) * | 2018-01-05 | 2018-05-11 | 山东大学 | The method and device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas |
| CN110567546A (en) * | 2019-09-26 | 2019-12-13 | 张家港市江南锅炉压力容器有限公司 | Gas self-saturation device |
-
2018
- 2018-01-05 CN CN201820023988.7U patent/CN207786202U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014578A (en) * | 2018-01-05 | 2018-05-11 | 山东大学 | The method and device of fine grained and condensable particle in low temperature spray cleaning coal-fired flue-gas |
| CN110567546A (en) * | 2019-09-26 | 2019-12-13 | 张家港市江南锅炉压力容器有限公司 | Gas self-saturation device |
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