CN204380480U - A kind of gas treatment equipment - Google Patents
A kind of gas treatment equipment Download PDFInfo
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- CN204380480U CN204380480U CN201420869908.1U CN201420869908U CN204380480U CN 204380480 U CN204380480 U CN 204380480U CN 201420869908 U CN201420869908 U CN 201420869908U CN 204380480 U CN204380480 U CN 204380480U
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Abstract
The utility model relates to a kind of gas treatment equipment, comprises absorbing unit, desorption unit; Auxiliary pumping cells, start blower fan, negative pressure is drained, and the mist of the entrained steam in absorbing unit and desorption gas is pumped down to condensing unit; Continue exhausting, dry air is reverse enters described desorption unit, repeatedly takes a breath, and is expelled to absorbing unit absorption after steam, organic gas being deviate from further; Condensing unit, the gaseous mixture that negative pressure is deviate from after draining is condensed, and uncondensed gas is carried steam secretly and entered cyclone separator and carry out gas-liquid separation, and uncondensed gas returns the first air inlet and continues adsorption cleaning, and lime set enters oily-water seperating equipment and carries out water-oil separating.The utility model has the advantages such as high efficiency, low energy consumption, simple to operate, safety and stability.
Description
Technical field
The utility model relates to waste gas pollution control and treatment and reclaims field, particularly the auxiliary desorption gas treating apparatus of bleeding of one.
Background technology
The steam desorption treatment technology of organic exhaust gas has had years development history, and its purification efficiency and dynamic adsorbance are all higher, be specially adapted to the industrial discharge pollutant of low concentration, Wind Volume, but it exists following shortcoming in running:
(1) after steam desorption, on adsorbent, temperature is higher, is still full of steam in absorber, is carrying out in dry temperature-fall period, and the steam that absorber is remaining in a large number is directly blown to air, causes the white mist of aiutage to curl up, affects environment.
(2) after steam desorption, the organic matter on adsorbent can not remove completely, and in dry run, air entrainment portions organic matter directly enters air, causes dry initial stage exhaust not up to standard;
(3) to organic matter on adsorbent is removed completely, improve steam desorption effect, need significantly to extend desorption time, energy consumption rises violently thereupon, simultaneously for ensureing that the absorber adsorbed in this desorption time is unlikely to supersaturation, need aggrandizement apparatus overall size, thus increase equipment investment.
Utility model content
In order to solve the deficiency in above-mentioned prior art, the utility model provides the gas treatment equipment of a kind of high efficiency, low energy consumption, simple to operate, safety and stability.
The purpose of this utility model is achieved through the following technical solutions:
A kind of gas treatment equipment, comprising:
Absorbing unit, pending gas enters the absorption of described absorbing unit by the first air inlet, and absorption after-purification gas is expelled to air from the first dump valve;
Desorption unit, steam enters described absorbing unit by the second air inlet and carries out desorption, and after desorption, desorption gas is expelled to condensing unit from the second dump valve;
Auxiliary pumping cells, start blower fan, negative pressure is drained, and the mist of the entrained steam in absorbing unit and desorption gas is pumped down to condensing unit; Open the first dump valve, dry air is reverse enters described desorption unit, repeatedly takes a breath, and is expelled to absorbing unit absorption after steam, organic gas being deviate from further;
Condensing unit, the gaseous mixture that negative pressure is deviate from after draining is condensed, uncondensed gas is carried steam secretly and is entered cyclone separator and carry out gas-liquid separation, uncondensed gas returns the first air inlet and continues adsorption cleaning, a small amount of lime set temporarily retains in bottom condenser, enters oily-water seperating equipment and carry out water-oil separating after auxiliary end of bleeding.
Further, described absorbing unit at least comprises two absorbers.
Preferably, described absorber is two.
Further, while described two absorbers one absorption, another carries out desorption, and adsorption and desorption circulates, hockets.
Compared with prior art, the beneficial effect that the utility model has is:
1, desorption is thorough, reduces energy consumption
Increase negative pressure after steam desorption to drain, adsorbent surface being failed the organic matter of complete desorption removes further by vacuumizing mode, greatly reduces steam energy consumption, and the overall size of device.
Negative pressure arranges ventilation after draining and drains, and the entrained steam remained in absorber and absorber dead angle place organic matter can be deviate from by scavenging way, enter condensation separation, and organic matter reclaims; And scavenging period can reduce absorber temperature, greatly reduce the load of Wind Volume dry run, saveall energy consumption.
2, tail gas is up to standard all the period of time
To be drained by negative pressure and ventilation is drained, dry run emission is reached or lower than country or local discharge standard, the qualified discharge of implement device whole time period.
Accompanying drawing explanation
Fig. 1 is the gas treatment equipment structural representation of embodiment 2;
Detailed description of the invention
Embodiment 1
The present embodiment provides a kind of gas treatment equipment, comprising:
Absorbing unit, pending gas enters the absorption of described absorbing unit by the first air inlet, and absorption after-purification gas is expelled to air from the first dump valve;
Desorption unit, steam enters described absorbing unit by the second air inlet and carries out desorption, and after desorption, desorption gas is expelled to condensing unit from the second dump valve;
Auxiliary pumping cells, start blower fan, negative pressure is drained, and the mist of the entrained steam in absorbing unit and desorption gas is pumped down to condensing unit; Open the first dump valve, dry air is reverse enters described desorption unit, repeatedly takes a breath, and is expelled to absorbing unit absorption after steam, organic gas being deviate from further;
Condensing unit, the gaseous mixture that negative pressure is deviate from after draining is condensed, and uncondensed gas is carried steam secretly and entered cyclone separator and carry out gas-liquid separation, and uncondensed gas returns the first air inlet and continues adsorption cleaning, and lime set enters oily-water seperating equipment and carries out water-oil separating.
Adsorbing medium in described absorbing unit is carbon fiber; Pending gas enters gas treatment equipment from the first air inlet, and after the carbon fiber bed adsorption of absorbing unit, the gas meeting atmospheric emission standard is expelled to air by the first dump valve; Steam desorption method is adopted to make carbon fiber regenerating and carry out desorption to adsorbent, the organic matter that absorbing unit adsorbs can be parsed, the gas parsed is called desorption gas, desorption gas is expelled to condensing unit condensation from described second dump valve, after enter oily-water seperating equipment and carry out water-oil separating, to realize organic recovery.
Because adsorbing medium can reach capacity after the certain material of absorption, therefore need, to reprocessing organic exhaust gas after adsorbing medium regeneration, like this meeting interrupt processing process, for solving the problem, gas treatment successively to be carried out:
Further, described absorbing unit at least comprises two absorbers.
Preferably, described absorber is two.
Further, while described two absorbers one absorption, another carries out desorption, and adsorption and desorption circulates, hockets.
The utility model is at low temperatures by adsorbent according to organic gas, by the principle of desorption under high temperature and vacuum state, organic matter in pending gas is trapped on adsorbent, adsorb saturated after first with steam, concentrated most of organic matter desorption is on the sorbent got off, for the residue of more difficult desorption, then need to carry out desorption further, so increase auxiliary pumping cells.
Described auxiliary pumping cells comprises negative pressure and to drain and two parts are drained in ventilation, first blower fan is utilized to take out negative pressure, the mist of the entrained steam now in absorbing unit and desorption gas is pumped down to condensing unit, after condensation, a small amount of lime set temporarily retains in bottom condenser, enters oily-water seperating equipment and be separated after auxiliary end of bleeding.
After negative pressure drains end, still a small amount of steam is remained in described absorbing unit, high humidity, so need to carry out ventilation further to drain, deviate from steam and organic gas further, the temperature of described desorption unit is down to about 40 DEG C simultaneously, open the first dump valve of absorbing unit, blower fan is exhausting on one side, and another side dry air is reverse enters described absorbing unit, is expelled to absorbing unit and continues absorption after steam, organic gas being deviate from further.
The workflow of above-mentioned gas treating apparatus is as follows:
(A1) process the first absorber that gas enters absorbing unit to carry out absorption and treat, the pure gas after absorption is expelled to air;
(A2) the second absorber that pending gas enters absorbing unit adsorbs, and described first absorber stops absorption, and carry out steam desorption, desorption gas enters condensing unit condensation;
(A3) blower fan is opened, carry out negative pressure to drain, entrained steam in described first absorber and desorption gas are deviate from further, the gaseous mixture deviate from is in described condensing unit condensation, a small amount of lime set temporarily retains in bottom condenser, after auxiliary end of bleeding, enter gas and oil separating plant carry out Oil-gas Separation, the uncondensed gas being entrained with steam enters cyclone separator gas-liquid separation, isolated gas gets back to the further adsorption cleaning of the first air inlet, and isolated liquid enters described gas and oil separating plant; Open described first dump valve to carry out ventilation and drain, dry air is reverse enters described first absorber, repeatedly takes a breath, and is expelled to the second absorber absorption after steam, organic gas being deviate from further;
(A4) close described blower fan, carry out Wind Volume drying cooling, Wind Volume dry air enters the first absorber from the 3rd air inlet, takes away steam residual in described absorber, after discharge from described first dump valve.
(A5) described first absorber stops desorption, and described second absorber stops absorption; Pending gas enters described first absorber with the gaseous mixture of the uncondensed gas separated and adsorbs, and described second absorber carries out steam desorption, so repeatedly, circulates.
Further, the vacuum that in described step (A3), negative pressure is drained is 10 ~ 90Kpa.
Further, after described step (A3) terminates, the temperature in absorber is cooled to 40 DEG C by 100 DEG C.
Further, after described step (A4) terminates, the temperature in absorber is down to environment temperature.
Further, aforementioned arbitrary described gas treatment equipment is adopted to process.
Compared with prior art, the beneficial effect that has of the utility model:
1, desorption is thorough, reduces energy consumption
Increase negative pressure after steam desorption to drain, adsorbent surface being failed the organic matter of complete desorption removes further by vacuumizing mode, greatly reduces steam energy consumption, and the overall size of device.
Negative pressure arranges ventilation after draining and drains, and the entrained steam remained in absorber and absorber dead angle place organic matter can be deviate from by scavenging way, enter condensation separation, and organic matter reclaims; And scavenging period can reduce absorber temperature, greatly reduce the load of Wind Volume dry run, saveall energy consumption.
2, tail gas is up to standard all the period of time
To be drained by negative pressure and ventilation is drained, dry run emission is reached or lower than country or local discharge standard, the qualified discharge of implement device whole time period.
Embodiment 2
The present embodiment is the application examples of embodiment 1.
Refer to Fig. 1, the present embodiment provides a kind of gas treatment equipment, comprising: the first air inlet 1, second air inlet 2, the 3rd air inlet 3, absorber 4, absorber 5, condenser 6, blower fan 7, gas-liquid separator 8 and oily-water seperating equipment 9.
Described first air inlet 1 connects valve 11, valve 12; Described valve 11 connects absorber 4, and described valve 12 connects absorber 5;
Described second air inlet 2 connects valve 21, valve 22; Described valve 21 connects absorber 4, and described valve 22 connects absorber 5;
Described 3rd air inlet 3 connects valve 31, valve 32; Described valve 31 connects absorber 4, and described valve 32 connects absorber 5;
Described absorber 4 connects purified gas dump valve 13, desorption gas dump valve 23; Described absorber 5 connects purified gas dump valve 14, desorption gas dump valve 24.
In described absorber 4 and absorber 5, PAN-ACF medium is all housed.
Described condenser 6 entrance connects described desorption gas dump valve 23,24, uncondensed gas outlet connection first air inlet 1 and blower fan 7, and described blower fan 7 connects gas-liquid separator 8, uncondensed gas outlet connection first air inlet 1 of described gas-liquid separator 8; Described oily-water seperating equipment connects the condensate outlet of described condenser 6 and the condensate outlet of described separator 8.
Be applied to by said apparatus in certain factory's entrucking tail gas, the main component in tail gas is benzene, toluene and dimethylbenzene, described tail gas normal temperature and pressure, and air quantity is 500Nm
3/ h, concentration is 200g/m
3, and the adsorption capacity of above-mentioned two absorbers is identical.
The workflow of above-mentioned gas treating apparatus process above-mentioned entrucking tail gas is as follows:
(A1) open valve 11 and purified gas dump valve 13, pending tail gas enters absorber 4 from the first air inlet 1 and adsorbs, and purified gas is expelled to air from purified gas dump valve 13, adsorption temp≤40 DEG C in whole adsorption process; Adsorb after 40 minutes, open valve 12 and purified gas dump valve 14, valve-off 11 and purified gas dump valve 13, pending tail gas enters absorber 5 and adsorbs;
(A2) valve 21, valve 23, valve 25, valve 26 is opened, steam enters absorber 4 from the second air inlet 2, desorption is carried out to carbon fiber bed, desorption gas enters condenser 6 condensation, uncondensed gas is got back to the first air inlet 1 by valve 25 and is mixed with pending entrucking tail gas, further adsorption cleaning, lime set enters oily-water seperating equipment 9 by valve 26 and carries out water-oil separating, realizes organic recovery;
Steam desorption is after 15 minutes, valve-off 21, valve 25, valve 26, open and send out valve 27, startup blower fan 7 carries out negative pressure and drains, evacuated pressure is 68kpa, entrained steam in absorber 4 and the gaseous mixture of organic gas are deviate from further, first the admixture of gas deviate from enters condenser 6, a small amount of gas is condensed, and be stored in bottom condenser, uncondensed gas body entrainment portions steam enters cyclone separator 8 and carries out gas-liquid separation, uncondensed gas is got back to the first air inlet and is mixed with pending entrucking tail gas, further adsorption cleaning, lime set enters oily-water seperating equipment 9 and carries out water-oil separating,
After negative pressure drains 5 minutes, open purified gas dump valve 13, carry out ventilation to drain, dry air enters absorber 4 from purified gas dump valve 13, under the twitch of blower fan 7, the steam on carbon fiber bed, steam, organic matter are deviate from further, through the condensation of condenser 6, the gas-liquid separation of cyclone separator 8, uncondensed gas is again got back to the first air inlet 1 and is entered absorber 5 again adsorb together with entrucking tail gas, is expelled to air after adsorption cleaning from purified gas dump valve 14.
(A3), after ventilation drains 10 minutes, in absorber 4, temperature is cooled to 40 DEG C from 100 after steam desorption DEG C.Close blower fan 7, valve-off 23, valve 27, open valve 13, valve 31, and dry air enters absorber 4 from the 3rd air inlet 3, carries out Wind Volume drying cooling, be expelled to air from purified gas dump valve 13.Dry cooling 10 minutes, the temperature in absorber 4 reaches environment temperature.
(A4) Wind Volume drying cooling is after 10 minutes, and valve-off 31, opens valve 11, and absorber 4 enters people's adsorbed state; Valve-off 12, purified gas dump valve 14, open valve 22, valve 24, valve 25, valve 26, and steam enters absorber 5 from the second air inlet 2, carries out desorption to carbon fiber bed.Desorption process comprises steam desorption, negative pressure is drained, take a breath drain, Wind Volume is dry, with the desorption process of absorber 4, do not repeat them here.
After being processed by the method, the entrucking tail gas of this factory is purified, and overall process is disposed in the purified gas in air, and benzene content is 3 ~ 7mg/m
3, lower than national standard 12mg/m
3.And, to organic efficiency >=99% of benzene.
Above-mentioned embodiment should not be construed as the restriction to the utility model protection domain.Key of the present utility model is: carry out negative pressure after steam desorption and drain, take a breath and drain to deviate from further residual steam and organic gas.When not departing from the utility model spirit, all should fall within protection domain of the present utility model any type of change that utility model is made.
Claims (4)
1. a gas treatment equipment, comprising:
Absorbing unit, pending gas enters the absorption of described absorbing unit by the first air inlet, and absorption after-purification gas is expelled to air from the first dump valve;
Desorption unit, steam enters described absorbing unit by the second air inlet and carries out desorption, and after desorption, desorption gas is expelled to condensing unit from the second dump valve;
Auxiliary pumping cells, start blower fan, negative pressure is drained, and the mist of the entrained steam in absorbing unit and desorption gas is pumped down to condensing unit; Open the first dump valve, dry air is reverse enters described desorption unit, repeatedly takes a breath, and is expelled to absorbing unit absorption after steam, organic gas being deviate from further;
Condensing unit, the gaseous mixture that negative pressure is deviate from after draining is condensed, and uncondensed gas is carried steam secretly and entered cyclone separator and carry out gas-liquid separation, and uncondensed gas returns the first air inlet and continues adsorption cleaning, and lime set enters oily-water seperating equipment and carries out water-oil separating.
2. gas treatment equipment according to claim 1, is characterized in that: described absorbing unit at least comprises two absorbers.
3. gas treatment equipment according to claim 2, is characterized in that: described absorber is two.
4. gas treatment equipment according to claim 3, is characterized in that: while described two absorbers one absorption, another carries out desorption.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420869908.1U CN204380480U (en) | 2014-12-31 | 2014-12-31 | A kind of gas treatment equipment |
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| CN201420869908.1U CN204380480U (en) | 2014-12-31 | 2014-12-31 | A kind of gas treatment equipment |
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| CN204380480U true CN204380480U (en) | 2015-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039921A (en) * | 2016-06-30 | 2016-10-26 | 清本环保工程(杭州)有限公司 | Organic waste gas treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039921A (en) * | 2016-06-30 | 2016-10-26 | 清本环保工程(杭州)有限公司 | Organic waste gas treatment method |
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