CN207769485U - The structure of microcomponent in a kind of removing flue gas - Google Patents
The structure of microcomponent in a kind of removing flue gas Download PDFInfo
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- CN207769485U CN207769485U CN201721794911.1U CN201721794911U CN207769485U CN 207769485 U CN207769485 U CN 207769485U CN 201721794911 U CN201721794911 U CN 201721794911U CN 207769485 U CN207769485 U CN 207769485U
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- desorption column
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Abstract
The structure of microcomponent in a kind of removing flue gas, including heat exchanger, the entrance of heat exchanger is passed through heat smoke, heat exchanger exit is connected with the entrance of gas-liquid separator, the condensed water of the liquid-phase outlet of gas-liquid separator is discharged, the gaseous phase outlet of gas-liquid separator is connected with the entrance of freezer unit, freezer unit outlet is connect to connect with more than one pair of absorption/desorption column top entry, absorption/desorption column outlet at bottom discharges clean flue gas, it is formed in parallel by the first absorption/desorption column and the second absorption/desorption column per a pair of absorption/desorption column, first absorption/desorption column, second absorption/desorption column top exit is connected with the entrance of vacuum pump, the outlet of vacuum pump is connected with incinerator；Absorption/desorption column is internally provided with heat exchanger tube, and the medium inlet of heat exchanger tube is passed through heat smoke, and the media outlet of heat exchanger tube is connected with the entrance of heat exchanger；The utility model can remove vapor and harmful microcomponent in flue gas, and recycle heat, reach clean emission.
Description
Technical field
The utility model belongs to fume treatment technical field, more particularly to a kind of knot of microcomponent in removing flue gas
Structure.
Technical background
Incineration technology is the important technology of industrial processing harmful components, to the further purified treatment of tail gas from incinerator,
It is the major issue of environmental protection industry (epi).For the harmful components in flue gas, the semidry process used at present, absorbent is in wet condition
It is lower to be reacted with sour gas, handle reaction product under dry state.Its typical process is spray drying reaction tower and bag-type dusting
The combination of device, i.e., spray into reaction tower by absorbent solution, is entering downstream bag deduster.The harmful components removal efficiency of this method
Higher, and do not generate waste water, but be reduction of the temperature of flue gas, when discharge, easy tos produce " white cigarette phenomenon "；And above-mentioned side
That there is equipment investments is higher for method, easily corrodes equipment, the shortcomings of operation and maintenance cost is higher.
Can also while wasting the energy in addition, incineration flue gas is typically the higher temperatures logistics containing a large amount of vapor
It generates " white cigarette ", causes visual pollution.This " white cigarette " on the one hand be easy to cause visual pollution, particularly with apart from resident living
The closer place in area, this visual pollution influence bigger, are easily misunderstood into poisonous smog, the very big heart is caused to resident
Reason is panic.On the other hand, the sour gas in flue gas forms and is grown up along with mist droplet, is constantly dissolved among droplet,
As acid white cigarette, acid white cigarette is adsorbed by the PM haze grains in air again, becomes the haze of pollution environment.
Currently, " white cigarette " is solved generally using being heated to flue gas, is discharged after so that saturated flue gas was become heat smoke
Method.But this method there is a problem that it is more, on the one hand, the heat contained in flue gas cannot not only recycle, also
It needs in addition to heat flue gas, energy consumption is big；On the other hand, especially northern under the lower climatic environment of temperature
Winter, be still difficult to eliminate white cigarette by this method；And existing processing method does not consider to be harmful to microcomponent in flue gas
Removing problem.
Invention content
In order to overcome the disadvantages of the above prior art, the purpose of this utility model is to provide in a kind of removing flue gas micro group
The structure divided, can remove the vapor in flue gas and harmful microcomponent, and recycle heat, reach clean emission.
In order to achieve the above object, the technical solution that the utility model is taken is：
The structure of microcomponent in a kind of removing flue gas, including heat exchanger 1, the entrance of heat exchanger 1 are passed through heat smoke, exchange heat
The outlet of device 1 is connected with the entrance of gas-liquid separator 2, the condensed water discharge of the liquid-phase outlet of gas-liquid separator 2, gas-liquid separator 2
Gaseous phase outlet connected with the entrance of freezer unit 3, connect the outlet of freezer unit 3 and more than one pair of absorption/desorption column top entry connect
It connects, absorption/desorption column outlet at bottom discharges clean flue gas, per a pair of absorption/desorption column by the first absorption/desorption column 4 and second
Absorption/desorption column 5 is formed in parallel, the first absorption/desorption column 4, the second absorption/desorption column 5 top exit and vacuum pump 6 entrance
Connection, the outlet of vacuum pump 6 is connected with incinerator；
First absorption/desorption column 4, the second absorption/desorption column 5 are internally provided with heat exchanger tube 7, the medium of heat exchanger tube 7
Entrance is passed through heat smoke, and the media outlet of heat exchanger tube 7 is connected with the entrance of heat exchanger 1, and the flue gas after use returns to heat exchanger 1
Inlet.
First absorption/desorption column 4, the second absorption/desorption column 5 by valve control can arbitrarily switch absorption/
Detachment status.
The heat exchanger 1 be tubular type, it is board-like or finned in any one.
The heat exchanger tube 7 is any one of shell and tube or coiled.
The quantity of the absorption/desorption column in parallel is 1-20 pairs.
Adsorbent is housed, adsorbent is activated carbon, divides in first absorption/desorption column 4, the second absorption/desorption column 5
Sub- sieve, carbon nanotube, graphene, Ca (OH)2、Mg(OH)2With one or more combinations in NaOH.
Based on a kind of above-mentioned method removing the structure of microcomponent in flue gas, include the following steps：
Heat smoke first passes through heat exchanger 1 and flue-gas temperature is reduced to 10-50 DEG C, and moisture is condensed, and condensed water is in gas-liquid point
From discharge system after being detached in device 2, and recycle；After the flue gas of gas-liquid separator 2 is passed through freezer unit 3 again, temperature drop
It down to -10-10 DEG C, then is passed through absorption/desorption column and is adsorbed, absorption/desorption column outlet at bottom discharges clean flue gas；Adsorbent
When reaching saturation degree, desorption manipulation is carried out, heat exchanger tube 7 heats adsorbent using heat smoke, after completing heating, this strand of cigarette
Gas returns to the inlet of heat exchanger 1；It is passed through air from the first absorption/desorption column 4,5 bottom of the second absorption/desorption column, air is used
It is purged in adsorbent, for vacuum pump 6 so that keeping vacuum in tower, the tail gas that vacuum pump 6 exports is passed through incinerator.
The beneficial effects of the utility model are：
1) being used in combination by heat exchanger 1 and freezer unit 3, on the one hand can effectively remove and the water in recovered flue gas steams
Gas, the heat in another aspect recovered flue gas, the energy has been saved while recycling water resource.
2) by harmful microcomponent in absorption/desorption column efficient removal flue gas, the heat source of desorption uses flue gas itself
Heat, without separately setting heat source.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model
Specific implementation mode
Below in conjunction with the accompanying drawings to the utility model is described in detail.
As shown in Figure 1, a kind of structure removing microcomponent in flue gas, including heat exchanger 1, the entrance of heat exchanger 1 are passed through
Heat smoke, the outlet of heat exchanger 1 are connected with the entrance of gas-liquid separator 2, the condensed water discharge of the liquid-phase outlet of gas-liquid separator 2,
The gaseous phase outlet of gas-liquid separator 2 is connected with the entrance of freezer unit 3, connects the outlet of freezer unit 3 and more than one pair of absorption/desorption column
Top entry connects, and absorption/desorption column outlet at bottom discharges clean flue gas, per a pair of absorption/desorption column by the first absorption/desorption
Tower 4 and the second absorption/desorption column 5 are formed in parallel, the first absorption/desorption column 4,5 top exit of the second absorption/desorption column and vacuum
The entrance connection of pump 6, the outlet of vacuum pump 6 is connected with incinerator；
First absorption/desorption column 4, the second absorption/desorption column 5 are internally provided with heat exchanger tube 7, the medium of heat exchanger tube 7
Entrance is passed through heat smoke, and the media outlet of heat exchanger tube 7 is connected with the entrance of heat exchanger 1.
The heat exchanger 1 is for reducing flue-gas temperature, condensation portion vapor and higher microcomponent.
The gas-liquid separator 2 is used to detach condensate liquid with meteorology component, and by condensate liquid discharge system.
The freezer unit 3 is used for further water vapor removing and part microcomponent.
The vacuum pump 6 is for removing the microcomponent adsorbed in adsorbent.
First absorption/desorption column 4, the second absorption/desorption column 5 by valve control can arbitrarily switch absorption/
Detachment status.
The quantity of the absorption/desorption column in parallel is 1-20 pairs.
In the absorption/desorption column be equipped with adsorbent, adsorbent be activated carbon, molecular sieve, carbon nanotube, graphene,
Ca(OH)2、Mg(OH)2With one or more combinations in NaOH.
The heat exchanger 1 be tubular type, it is board-like or finned in any one.
The heat exchanger tube 7 is any one of shell and tube or coiled.
The microcomponent includes vapor, mercury, cadmium, lead, oxynitrides, oxygen sulfur compound, carbon monoxide, halogenation
Hydrogen, bioxin, benzene homologues and volatile organic matter (VOCs).
Based on a kind of above-mentioned method removing the structure of microcomponent in flue gas, include the following steps：
Heat smoke first passes through heat exchanger 1 and flue-gas temperature is reduced to 10-50 DEG C, and moisture is condensed, and condensed water is in gas-liquid point
From discharge system after being detached in device 2, and recycle；After the flue gas of gas-liquid separator 2 is passed through freezer unit 3 again, temperature drop
It down to -10-10 DEG C, then is passed through absorption/desorption column and is adsorbed, absorption/desorption column outlet at bottom discharges clean flue gas；Adsorbent
When reaching saturation degree, desorption manipulation is carried out, heat exchanger tube 7 heats adsorbent using heat smoke, after completing heating, this strand of cigarette
Gas returns to the inlet of heat exchanger 1；It is passed through air from the first absorption/desorption column 4,5 bottom of the second absorption/desorption column, air is used
It is purged in adsorbent, for vacuum pump 6 so that keeping vacuum in tower, the tail gas that vacuum pump 6 exports is passed through incinerator.
The method of the utility model is described in detail with reference to embodiment.
Embodiment 1：A kind of temperature is 200 DEG C, contains 8% vapor, 3000mg/m3CO and 200mg/m3SOx、120mg/
m3The incinerator smoke of HCl first passes around heat exchanger 1 and flue-gas temperature is reduced to 20 DEG C, and 72% moisture in flue gas is cold
It is solidifying, discharge system after condensed water detaches in gas-liquid separator 2, and recycle；It is passed through again by the flue gas of gas-liquid separator 2
After freezer unit 3, temperature is reduced to 5 DEG C, and the moisture removal rate in flue gas reaches 90%, then is passed through absorption/desorption column and is adsorbed,
After absorption, moisture 0.1% in clean flue gas, removal efficiency 98.75% are exported；CO content 200mg/m3, removal efficiency
It is 93.3%；SOx content 15mg/m3, removal efficiency 92.5%.HCl contents 10mg/m3, removal efficiency 91.7%.
Through this embodiment, the microcomponent removal efficiency in the flue gas reaches 91% or more, and outlet drain concentration is excellent
In the concentration of emission of national Specification, clean emission is realized, and has recycled the moisture in a large amount of flue gases, has saved water
Resource.
Embodiment 2：A kind of temperature is 180 DEG C, contains 10% vapor, 0.5ng TEQ/Nm3 bioxin, 400mg/
m3NOx and 2mg/m3The incinerator smoke of cadmium first passes around heat exchanger 1 and flue-gas temperature is reduced to 15 DEG C, 83% in flue gas
Moisture is condensed, discharge system after condensed water detaches in gas-liquid separator 2, and recycles；By the cigarette of gas-liquid separator 2
After gas is passed through freezer unit 3 again, temperature is reduced to 4 DEG C, and the moisture removal rate in flue gas reaches 92%, then is passed through absorption/desorption column
It is adsorbed, after absorption, exports moisture 0.1% in clean flue gas, removal efficiency 99%；Content of dioxin is
0.02ng TEQ/Nm3, removal efficiency 96%；NOx content is 30mg/m3, removal efficiency 92.5%, cadmium content 0.08, removing
Rate is 96%.
Through this embodiment, the microcomponent removal efficiency in the flue gas reaches 92% or more, and outlet drain concentration is excellent
In the concentration of emission of national Specification, the purpose of clean emission is realized, and has recycled the moisture in a large amount of flue gases, is saved
About water resource.
Claims (6)
1. the structure of microcomponent in a kind of removing flue gas, including heat exchanger (1), it is characterised in that：The entrance of heat exchanger (1) is logical
Enter heat smoke, heat exchanger (1) outlet is connected with the entrance of gas-liquid separator (2), the condensation of the liquid-phase outlet of gas-liquid separator (2)
Water is discharged, and the gaseous phase outlet of gas-liquid separator (2) is connected with the entrance of freezer unit (3), connects freezer unit (3) outlet and a pair or more
Absorption/desorption column top entry connection, absorption/desorption column outlet at bottom discharges clean flue gas, per a pair of absorption/desorption column by
First absorption/desorption column (4) and the second absorption/desorption column (5) are formed in parallel, the first absorption/desorption column (4), the second absorption/de-
Attached tower (5) top exit is connected with the entrance of vacuum pump (6), and the outlet of vacuum pump (6) is connected with incinerator；
First absorption/desorption column (4), the second absorption/desorption column (5) are internally provided with heat exchanger tube (7), heat exchanger tube (7)
Medium inlet is passed through heat smoke, and the media outlet of heat exchanger tube (7) is connected with the entrance of heat exchanger (1).
2. the structure of microcomponent in a kind of removing flue gas according to claim 1, it is characterised in that：Described first inhales
Attached/desorption column (4), the second absorption/desorption column (5) can arbitrarily switch absorption/detachment status by valve control.
3. the structure of microcomponent in a kind of removing flue gas according to claim 1, it is characterised in that：The suction of the parallel connection
The quantity of attached/desorption column is 1-20 pairs.
4. the structure of microcomponent in a kind of removing flue gas according to claim 1, it is characterised in that：The heat exchanger
(1) be tubular type, it is board-like or finned in any one.
5. the structure of microcomponent in a kind of removing flue gas according to claim 1, it is characterised in that：The heat exchanger tube
(7) it is any one of shell and tube or coiled.
6. removing the structure of microcomponent in flue gas according to claim 1, which is characterized in that the first absorption/desorption column
(4), adsorbent is housed, adsorbent is activated carbon, molecular sieve, carbon nanotube, graphene, Ca in the second absorption/desorption column (5)
(OH)2、Mg(OH)2With one or more combinations in NaOH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721794911.1U CN207769485U (en) | 2017-12-20 | 2017-12-20 | The structure of microcomponent in a kind of removing flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721794911.1U CN207769485U (en) | 2017-12-20 | 2017-12-20 | The structure of microcomponent in a kind of removing flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207769485U true CN207769485U (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721794911.1U Active CN207769485U (en) | 2017-12-20 | 2017-12-20 | The structure of microcomponent in a kind of removing flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108043167A (en) * | 2017-12-20 | 2018-05-18 | 北京汇能兴业科技有限公司 | The System and method for of microcomponent in a kind of removing flue gas |
-
2017
- 2017-12-20 CN CN201721794911.1U patent/CN207769485U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108043167A (en) * | 2017-12-20 | 2018-05-18 | 北京汇能兴业科技有限公司 | The System and method for of microcomponent in a kind of removing flue gas |
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