CN209348355U - Hot wet flue gas takes off white dust-extraction unit - Google Patents
Hot wet flue gas takes off white dust-extraction unit Download PDFInfo
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- CN209348355U CN209348355U CN201822027386.1U CN201822027386U CN209348355U CN 209348355 U CN209348355 U CN 209348355U CN 201822027386 U CN201822027386 U CN 201822027386U CN 209348355 U CN209348355 U CN 209348355U
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- flue gas
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Abstract
The utility model provides a kind of hot wet flue gas and takes off white dust-extraction unit, it includes the suction chamber being sequentially communicated, mixing chamber, diffuser casing demisting deduster that hot wet flue gas, which takes off white dust-extraction unit, it further includes the first blower and vortex tube that hot wet flue gas, which takes off white dust-extraction unit, wherein, suction chamber is used to suck the cold air of hot wet flue gas and pressurization, and mixing chamber is used for heat of mixing wet flue gas and cold air；First blower is connected to vortex tube, and cold air for being pressurized and being sent into vortex tube by blower；The cold air stream interface of vortex tube is connect with diffuser casing, the hot gas stream interface of vortex tube and the rear for being connected to demisting deduster.Pass through the utilization of the utility model, utilize vortex tube refrigeration principle, low-temperature airflow is directly mixed with supersaturated wet flue gas, further improve the degree of supersaturation of flue gas, it increases and condensation water quantity and mist droplet particle size is precipitated, it is collected to be easier to be captured by demister, white dust removal process is taken off with significant application value to hot wet flue gas.
Description
Technical field
The utility model relates to a kind of hot wet flue gas to take off white dust-extraction unit.
Background technique
The flue gas of most domestic coal-burning power plant or other chemical industries has mostly carried out wet process before discharging
Desulfurization, temperature are down to 45 DEG C~55 DEG C, the typically saturated wet flue gas of flue gas at this time, and a large amount of vapor are contained in flue gas, and water steams
Contain more dissolubility salt, SO in gas2, gel dust, micronic dust etc. (being all the main component of haze).If flue gas is by chimney
It is expelled directly out, into the lower surrounding air of temperature, since the saturated humidity of surrounding air is relatively low, is reduced in flue-gas temperature
In the process, the vapor in flue gas can condense to form wet plume.Cause to atmosphere be not only vision and also be substantial dirt
Dye.
The mechanism for being formed and being dissipated according to wet plume, currently used method are concluded are as follows: flue gas technology, flue gas condensing
Technology, flue gas first condense the combination technique of thermal technology again and various methods.But current technique generally requires to change using huge
Hot equipment, operational process consumes a large amount of thermal energy, while industrial smoke generally all has strong corrosive, to equipment material require compared with
Height, process above have the defect that whole investment price is higher, land occupation is more, operation energy consumption is big.
Utility model content
The technical problems to be solved in the utility model be in order to overcome flue gas in the prior art take off white system energy consumption it is excessively high,
Take up an area more, investment greatly, the high defect of operating cost, a kind of hot wet flue gas is provided and takes off white dust-extraction unit.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of hot wet flue gas takes off white dust-extraction unit, it is characterized in that, it includes successively that the hot wet flue gas, which takes off white dust-extraction unit,
Suction chamber, mixing chamber, the diffuser casing demisting deduster of connection, the hot wet flue gas take off white dust-extraction unit further include the first blower with
And vortex tube, wherein
The suction chamber is used to suck the cold air of hot wet flue gas and pressurization, the mixing chamber for heat of mixing wet flue gas with
And cold air；
First blower is connected to the vortex tube, and cold air for being pressurized and being sent into the vortex by the blower
Pipe；
The cold air stream interface of the vortex tube is connect with the diffuser casing, the hot gas stream interface of the vortex tube be connected to
The rear of the demisting deduster.
This programme adds injection to mix the technical principle of wind using vortex effect refrigeration, and the ambient, cool air of pressurization generates negative in outlet
Pressure, so that the lesser hot wet flue gas of overbottom pressure is sucked, part condensate is precipitated in the hot wet flue gas dew-point temperature decline of this process.Together
When a part of cold air be pressurized through the second blower, separated in vortex tube, generate cold and hot two strands of air-flows, cold airflow is in diffuser casing
It is mixed with flue gas, condensate is further precipitated, then speed reduces mixed flue gas in diffuser casing, and pressure increase is removed by demisting
Dirt device carries out removing condensate and dust separation to mixed flue gas, and flue gas is mixed after thermal current and demisting deduster that vortex tube is isolated
It closes, secondary reduction dew-point temperature, and is discharged after improving flue gas dry-bulb temperature, eliminate visual white cigarette phenomenon, and reduce cigarette
Gas smoke content has important environmental benefit and economic benefit.
Wherein, which takes off white dust-extraction unit in utilization vortex tube refrigeration principle, the cold air that sub-argument is gone out
Stream is directly mixed with supersaturated wet flue gas, further improves the degree of supersaturation of flue gas, increases and condensation water quantity and droplet is precipitated
Partial size is collected to be easier to be captured by demister, takes off white dust removal process with significant application value to hot wet flue gas.
Preferably, it includes the air intlet section for being passed through the cold air of pressurization that the hot wet flue gas, which takes off white dust-extraction unit,
The air intlet section is connected to the suction chamber by nozzle.The cold air of pressurization accelerates in nozzle, makes around jet expansion
Negative pressure is generated, so that the lesser hot wet flue gas of overbottom pressure is sucked.
Preferably, it includes the second blower that the hot wet flue gas, which takes off white dust-extraction unit, second blower and the air into
Mouth section connection.It is pressurizeed by the second blower to ambient, cool air.
Preferably, second blower is frequency conversion fan.
Preferably, the air intlet section is connected to first blower by bypass duct.It is thus achieved that the first blower
With air feed while nozzle, is conducive to the simplification of structure, improves efficiency.
Preferably, first blower is roots blower.
Preferably, it includes the gas inlet section for being passed through hot wet flue gas that the hot wet flue gas, which takes off white dust-extraction unit, it is described
Gas inlet section is connected to the suction chamber.
A kind of hot wet flue gas takes off white dust removal method, it is characterized in that, white dust-extraction unit is taken off using the hot wet flue gas
It realizes, comprising the following steps:
The cold air of pressurization is passed through the mixing chamber by step 1, and hot wet flue gas injection is entered mixing chamber by negative pressure, and
It is mixed with cold air；
Step 2 passes through the first blower for cold air pressure-increasing unit to the vortex tube；
Cold air is separated into thermal current and cold airflow by step 3, the vortex tube, and by cold airflow input diffuser casing into
Row mixing；
Step 4, the demisting deduster, which capture, collects droplet and dust；
Step 5, the thermal current input demisting deduster rear progress gas mixing of the vortex tube.
Preferably, hot wet flue gas is 50 DEG C of saturation wet flue gas, flow 210000Nm in step 13/ h, dust content are
20mg/m3, flue gas pressures 50Pa.
Preferably, the flow of cold air is 252000Nm in step 13/h。
Preferably, the flow of cold airflow is 48000Nm in step 33/ h, -42 DEG C of temperature, the flow of thermal current is
32000Nm3/ h, 66 DEG C of temperature.
Preferably, going the cold air amount of vortex tube is 80000Nm in step 23/h。
The positive effect of the utility model is: by the utilization of the utility model, using vortex tube refrigeration principle,
Low-temperature airflow is directly mixed with supersaturated wet flue gas, the degree of supersaturation of flue gas is further improved, increases precipitation condensed water
Amount and mist droplet particle size are collected to be easier to be captured by demister, take off white dust removal process with important application valence to hot wet flue gas
Value.
Detailed description of the invention
Fig. 1 is that the hot wet flue gas of the utility model embodiment 1 takes off white dust-extraction unit overall structure diagram.
Fig. 2 is that the hot wet flue gas of the utility model embodiment 2 takes off white dust-extraction unit overall structure diagram.
Fig. 3 is that the hot wet flue gas of the utility model embodiment 1 takes off the flow chart of white dust removal method.
Specific embodiment
A preferred embodiment is named, and completely illustrates the utility model in conjunction with attached drawing to become apparent from.
Embodiment 1
As shown in Figure 1, present embodiment discloses a kind of hot wet flue gas to take off white dust-extraction unit, hot wet flue gas takes off white dust-extraction unit
Including the suction chamber 4, mixing chamber 5,6 demisting deduster 7 of diffuser casing being sequentially communicated, it further includes that hot wet flue gas, which takes off white dust-extraction unit,
One blower 8 and vortex tube 9, wherein
Suction chamber 4 is used to suck the cold air of hot wet flue gas and pressurization, and mixing chamber 5 is used for heat of mixing wet flue gas and cold sky
Gas；
First blower 8 is connected to vortex tube 9, and cold air for being pressurized and being sent into vortex tube 9 by blower；
The cold air stream interface of vortex tube 9 is connect with diffuser casing 6, the hot gas stream interface of vortex tube 9 and is connected to demisting dedusting
The rear of device 7.
This programme adds injection to mix the technical principle of wind using vortex effect refrigeration, and the ambient, cool air of pressurization generates negative in outlet
Pressure, so that the lesser hot wet flue gas of overbottom pressure is sucked, part condensate is precipitated in the hot wet flue gas dew-point temperature decline of this process.Together
When a part of cold air be pressurized through the second blower 10, separated in vortex tube 9, generate cold and hot two strands of air-flows, cold airflow is being spread
It is mixed in room 6 with flue gas, condensate is further precipitated, then speed reduces mixed flue gas in diffuser casing 6, and pressure increase passes through
Demisting deduster 7 carries out removing condensate and dust separation to mixed flue gas, the thermal current and demisting deduster that vortex tube 9 is isolated
Flue gas mixes after 7, secondary reduction dew-point temperature, and is discharged after improving flue gas dry-bulb temperature, eliminates visual white cigarette phenomenon, and
Flue gas smoke content is reduced, there is important environmental benefit and economic benefit.
Wherein, which takes off white dust-extraction unit using 9 refrigeration principle of vortex tube, sub-argument is gone out cold
Air-flow is directly mixed with supersaturated wet flue gas, further improves the degree of supersaturation of flue gas, increases and condensation water quantity and mist is precipitated
Partial size is dripped, is collected to be easier to be captured by demister, white dust removal process is taken off with significant application value to hot wet flue gas.
It includes the air intlet section 2 for being passed through the cold air of pressurization, air intlet section 2 that hot wet flue gas, which takes off white dust-extraction unit,
Suction chamber 4 is connected to by nozzle 3.The cold air of pressurization accelerates in nozzle 3, makes to generate negative pressure around the outlet of nozzle 3, thus handle
The lesser hot wet flue gas sucking of overbottom pressure.
It further includes the second blower 10 that hot wet flue gas, which takes off white dust-extraction unit, and the second blower 10 is connected to air intlet section 2.Pass through
Second blower 10 pressurizes to ambient, cool air.Second blower 10 of the present embodiment is frequency conversion fan.
Air intlet section 2 is connected to the first blower 8 by bypass duct.It is thus achieved that while the first blower 8 and nozzle 3
Air feed is conducive to the simplification of structure, improves efficiency.First blower 8 of the present embodiment is roots blower.
It includes the gas inlet section 1 for being passed through hot wet flue gas, flue gas that the hot wet flue gas of the present embodiment, which takes off white dust-extraction unit,
Inducer 1 is connected to suction chamber 4.
As shown in figure 3, the hot wet flue gas of the present embodiment takes off white dust removal method, the hot wet flue gas utilized takes off white dust-extraction unit
It realizes, comprising the following steps:
Step S1, the cold air of pressurization is passed through mixing chamber 5, hot wet flue gas injection is entered by mixing chamber 5 by negative pressure, and with
Cold air mixing；
Step S2, pass through the first blower 8 for cold air pressure-increasing unit to vortex tube 9；
Step S3, cold air is separated into thermal current and cold airflow by vortex tube 9, and by cold airflow input diffuser casing 6 into
Row mixing；
Step S4, demisting deduster 7, which captures, collects droplet and dust；
Step S5, thermal current input 7 rear of demisting deduster of vortex tube 9 carries out gas mixing.
In specific practical embodiments, specifically, in step 1,50 DEG C of wet cigarettes of saturation of the feeding of gas inlet section 1
Gas, flow 210000Nm3/ h, dust content 20mg/m3, flue gas pressures 50Pa；Cold air amount is 252000Nm3/ h is done
Ball temperature is 0 DEG C, and dew-point temperature is 0 DEG C, and the second blower press is 2000Pa
In step 2 and 3, removing the flow of the cold air of vortex tube 9 is 80000Nm3/h, and the flow of cold airflow is after separation
48000Nm3/h, -42 DEG C of temperature, the stream flow of thermal current is 32000Nm3/h, 66 DEG C of temperature.Mixed flue gas in diffuser casing 6
Dry-bulb temperature is 32 DEG C, and 32 DEG C of dew-point temperature, precipitation condensation water quantity is 2.8t/h.
In step 5, smoke evacuation dry-bulb temperature is 35 DEG C, and dew-point temperature is down to 31 DEG C, and dust content is down to 5mg/m3Below.
Final effect data: former 50 DEG C of saturation wet flue gas is taking off white remove by the flue gas with vortex tube of the present embodiment
Dirt device mixes heel row with air multistage to atmosphere, and flue gas dry-bulb temperature reaches 35 DEG C, and depoint depression is as low as 31 DEG C or less.Around
, it can be achieved that the visible white cigarette of device exiting flue gas no visual under 0 DEG C of environment or more of temperature condition.Meanwhile exiting flue gas dust contains
Amount is down to 5mg/m3Below.It can be seen that the flue gas with vortex tube of the present embodiment takes off white dust-extraction unit, it can reach and take off white remove
The resultant effect of dirt.
Embodiment 2
As shown in Fig. 2, the present embodiment also discloses that a kind of hot wet flue gas takes off white dust-extraction unit, including gas inlet section 1, sky
Gas inducer 2, nozzle 3 further include the suction chamber 4 being sequentially communicated, mixing chamber 5,6 demisting deduster 7 of diffuser casing, and hot wet flue gas is de-
White dust-extraction unit further includes the first blower 8, vortex tube 9 and the second blower 10.
The present embodiment and the working principle having the same of embodiment 1 and structure, only difference is that, the in the present embodiment
One blower 8 is independent to provide the cold air of pressurization to vortex tube 9, and nozzle 3 is then separately provided the cold air of pressurization by the first blower 10.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Member can make numerous variations or be repaired to these embodiments under the premise of without departing substantially from the principles of the present invention and essence
Change, but these change and modification each fall within the protection scope of the utility model.
Claims (7)
1. a kind of hot wet flue gas takes off white dust-extraction unit, which is characterized in that it includes successively connecting that the hot wet flue gas, which takes off white dust-extraction unit,
Logical suction chamber, mixing chamber, diffuser casing demisting deduster, the hot wet flue gas take off white dust-extraction unit further include the first blower and
Vortex tube, wherein
The suction chamber is used to suck the cold air of hot wet flue gas and pressurization, and the mixing chamber is for heat of mixing wet flue gas and cold
Air；
First blower is connected to the vortex tube, and cold air for being pressurized and being sent into the vortex tube by the blower；
The cold air stream interface of the vortex tube is connect with the diffuser casing, the hot gas stream interface of the vortex tube and is connected to described
The rear of demisting deduster.
2. hot wet flue gas as described in claim 1 takes off white dust-extraction unit, which is characterized in that the hot wet flue gas takes off white dedusting dress
The air intlet section including the cold air for being passed through pressurization is set, the air intlet section is connected to the suction chamber by nozzle.
3. hot wet flue gas as claimed in claim 2 takes off white dust-extraction unit, which is characterized in that the hot wet flue gas takes off white dedusting dress
It sets including the second blower, second blower is connected to the air intlet section.
4. hot wet flue gas as claimed in claim 3 takes off white dust-extraction unit, which is characterized in that second blower is frequency conversion wind
Machine.
5. hot wet flue gas as claimed in claim 2 takes off white dust-extraction unit, which is characterized in that the air intlet section passes through bypass
Pipeline is connected to first blower.
6. hot wet flue gas as described in claim 1 takes off white dust-extraction unit, which is characterized in that first blower is Roots's wind
Machine.
7. hot wet flue gas as described in claim 1 takes off white dust-extraction unit, which is characterized in that the hot wet flue gas takes off white dedusting dress
It sets including the gas inlet section for being passed through hot wet flue gas, the gas inlet section is connected to the suction chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822027386.1U CN209348355U (en) | 2018-12-04 | 2018-12-04 | Hot wet flue gas takes off white dust-extraction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822027386.1U CN209348355U (en) | 2018-12-04 | 2018-12-04 | Hot wet flue gas takes off white dust-extraction unit |
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| Publication Number | Publication Date |
|---|---|
| CN209348355U true CN209348355U (en) | 2019-09-06 |
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ID=67798223
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822027386.1U Active CN209348355U (en) | 2018-12-04 | 2018-12-04 | Hot wet flue gas takes off white dust-extraction unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331601A (en) * | 2018-12-04 | 2019-02-15 | 昊姆（上海）节能科技有限公司 | Hot wet flue gas takes off white dust-extraction unit and takes off white dust removal method using it |
-
2018
- 2018-12-04 CN CN201822027386.1U patent/CN209348355U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331601A (en) * | 2018-12-04 | 2019-02-15 | 昊姆（上海）节能科技有限公司 | Hot wet flue gas takes off white dust-extraction unit and takes off white dust removal method using it |
| CN109331601B (en) * | 2018-12-04 | 2023-11-28 | 昊姆（上海）节能科技有限公司 | Hot wet flue gas whitening and dust removing device and whitening and dust removing method using same |
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