CN209612502U - A kind of exhaust treatment system of low concentration VOCs - Google Patents
A kind of exhaust treatment system of low concentration VOCs Download PDFInfo
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- CN209612502U CN209612502U CN201822125516.5U CN201822125516U CN209612502U CN 209612502 U CN209612502 U CN 209612502U CN 201822125516 U CN201822125516 U CN 201822125516U CN 209612502 U CN209612502 U CN 209612502U
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Abstract
The utility model relates to exhaust-gas treatment fields, disclose the exhaust treatment system of low concentration VOCs a kind of, it include blower, pre-processing device, several absorbers, hot nitrogen air pipe, vacuum pump and condensing recovery component, pass through Optimized System Design, by the way of being circularly set using adsorption-desorption-condensation three, processing recycling is carried out to organic exhaust gas, the recyclable row again such as organic solvent being mingled in exhaust gas emission compliance and exhaust gas after processing utilizes；By the processing system of rational design, system change is smaller, can carry out adaptability reform according to handled Exhaust gas species difference, flexibility is big.
Description
Technical field
The utility model relates to exhaust-gas treatment field, especially a kind of exhaust treatment system of low concentration VOCs.
Background technique
At present, low-concentration organic exhaust gas treatment process is:
1) activated carbon adsorption, the active carbon of adsorption saturation have given the harmless treatment of qualification company, and pollutant is only from gas
Phase transfer is to solid phase；
2) activated carbon adsorption or the absorption of zeolite runner and burning, wherein the patent CN201020668824 of Li Zeqing et al.,
Standard discharge after waste gas purification, but do not recycle organic solvent；
3) activated carbon adsorption or the absorption of zeolite runner and water vapour or nitrogen desorption and condensing recovery, wherein yellow literal arts etc.
The patent CN200920182800 of people's application, the waste water which generates also need to be handled.
Input cost how is reduced, exhaust treatment efficiency is improved, becomes a big hot spot of current VOCs treatment research.
Summary of the invention
The purpose of this utility model is to provide the exhaust treatment systems of low concentration VOCs a kind of, by exhaust-gas treatment system
System improves, and in such a way that adsorption-desorption-condensation three is circularly set, carries out processing recycling to organic exhaust gas.
To realize above-mentioned technical purpose and the technique effect, the utility model discloses a kind of low concentration VOCs's
Exhaust treatment system includes blower, pre-processing device, several absorbers, hot nitrogen air pipe, vacuum pump and condensing recovery group
Part, blower are connected with pre-processing device by guide pipeline, are arranged in parallel between several absorbers, are all provided on each group of absorber
Be equipped with absorption intake valve, vacuum desorption valve, waste gas outlet valve and desorption nitrogen inlet valve, pre-processing device by admission line with
The absorption intake valve of each group of absorber is connected, and hot nitrogen air pipe is connected with the desorption nitrogen inlet valve of each group of absorber, very
Sky pump is connected by gas exhaust piping with the vacuum desorption valve of each group of absorber, the other end and the condensing recovery component phase of vacuum pump
Even.
Wherein, condensing recovery component includes heat exchanger, condenser and nitrogen recycling tank, heat exchanger one end and vacuum pump phase
Even, the other end is connected with condenser, and the condenser other end is connected with nitrogen recycling tank, and condensing recovery is offered below condenser
Valve.
Wherein, absorption intake valve and be desorbed nitrogen inlet valve respectively on one, the upper and lower ends of absorber are once set.
Wherein, pre-processing device is one of filtration dust catcher or wet scrubber.
Preferably, filtration dust catcher is one of sack cleaner or gravel bed filter.
Preferably, wet scrubber is gravity spray wet deduster, cyclone type wet scrubber, auto-excitation type wet dust removal
One of device, material filling type wet scrubber, foam type wet scrubber, venturi wet dust collector.
Preferably, the flow passage components of blower and vacuum pump are coated with polytetrafluorethylecoatings coatings.
It preferably, further include having VOCs on-line computing model, VOCs on-line computing model is installed on the waste gas outlet valve of absorber
On.
The utility model has the following beneficial effects:
1. the utility model is by Optimized System Design, using the side being circularly set using adsorption-desorption-condensation three
Formula carries out processing recycling to organic exhaust gas, and the organic solvent etc. being mingled in exhaust gas emission compliance and exhaust gas after processing can return
Row again is received to utilize.
2. through rational design processing system, system change it is smaller, can according to handled Exhaust gas species difference into
Row adaptability reform, flexibility are big.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Main component symbol description:
1: blower, 2: pre-processing device, 3: admission line, 4: absorber, 5: absorption intake valve, 6: vacuum desorption valve, 7:
Waste gas outlet valve, 8: desorption nitrogen inlet valve, 9: gas exhaust piping, 10: hot nitrogen air pipe, 11: vacuum pump, 12: heat exchanger, 13:
Condenser, 14: nitrogen recycling tank, 15: condensing recovery valve, 16:VOCs on-line computing model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.
As shown in Figure 1, including blower 1, pre- the utility model discloses the exhaust treatment system of low concentration VOCs a kind of
2, three groups of absorbers 4 of processing equipment, hot nitrogen air pipe 10, vacuum pump 11, condensing recovery component and VOCs on-line computing model 16, wind
Machine 1 is connected with pre-processing device 2 by guide pipeline, is arranged in parallel between three groups of absorbers 4, is all provided on each group of absorber 4
It is equipped with absorption intake valve 5, vacuum desorption valve 6, waste gas outlet valve 7 and desorption nitrogen inlet valve 8, pre-processing device 2 and passes through air inlet
Pipeline 3 is connected with the absorption intake valve 5 of each group of absorber 4, the desorption nitrogen of hot nitrogen air pipe 10 and each group of absorber 4 into
Mouthful valve 8 is connected, and vacuum pump 11 is connected by gas exhaust piping 9 with the vacuum desorption valve 6 of each group of absorber 4, vacuum pump 11 it is another
One end is connected with condensing recovery component, and VOCs on-line computing model 16 is installed on the waste gas outlet valve 7 of absorber 4, wherein VOCs
On-line computing model 16 uses Shimadzu VOC-3000F serial equipment.
Wherein, absorption intake valve 5 and be desorbed nitrogen inlet valve 8 respectively on one, be once arranged in up and down the two of absorber 4
End, charge air flow are oppositely arranged with hot nitrogen air-flow.
Condensing recovery component includes heat exchanger 12, condenser 13 and nitrogen recycling tank 14,12 one end of heat exchanger and vacuum
Pump 11 is connected, and the other end is connected with condenser 13, and 13 other end of condenser is connected with nitrogen recycling tank 14, the lower section of condenser 13
Offer condensing recovery valve 15.
Pre-processing device 2 is one of filtration dust catcher or wet scrubber, wherein filtration dust catcher is pocket type
One of deduster or gravel bed filter, wet scrubber be gravity spray wet deduster, cyclone type wet scrubber,
One of auto-excitation type wet scrubber, material filling type wet scrubber, foam type wet scrubber, venturi wet dust collector.
The flow passage components of blower 1 and vacuum pump 11 are coated with polytetrafluorethylecoatings coatings, to avoid organic solvent to equipment
Damage.
Working principle:
Exhaust gas importing pre-processing device 2 is carried out cooling dedusting by blower 1, removed by cooling by the application utility model
The exhaust gas of dirt is sent into each group of absorber 4 by admission line 3, when adsorbance is the 70~80% of dynamic adsorbance, absorption
Device 4 switches to detachment status, it is ensured that cleaning of off-gas is up to standard at this time, closes absorption intake valve 5, opens desorption nitrogen inlet valve 8, opens
Vacuum pump 11 is opened, the low boiling components such as desorption benzene, ethyl alcohol and ethyl acetate heat adsorbent using hot nitrogen, carry out
Vacuum thermal desorption cools down adsorbent after the completion of desorption, carries out new round adsorption-desorption, and desorption gas is being condensed, changed in 13
Heat obtains organic solvent solution and nitrogen into condenser 13 and 14 cooling down of nitrogen recycling tank.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (8)
1. a kind of exhaust treatment system of low concentration VOCs, which is characterized in that include blower, pre-processing device, several absorption
Device, hot nitrogen air pipe, vacuum pump and condensing recovery component, the blower are connected with pre-processing device by guide pipeline, institute
It is arranged in parallel between several absorbers stated, absorption intake valve, vacuum desorption valve, exhaust gas is provided on each group of absorber and is gone out
Mouth valve and desorption nitrogen inlet valve, the pre-processing device pass through the absorption intake valve phase of admission line and each group of absorber
Even, the hot nitrogen air pipe is connected with the desorption nitrogen inlet valve of each group of absorber, and the vacuum pump passes through exhaust pipe
Road is connected with the vacuum desorption valve of each group of absorber, and the other end of vacuum pump is connected with condensing recovery component.
2. a kind of exhaust treatment system of low concentration VOCs as described in claim 1, it is characterised in that: the condensing recovery
Component includes heat exchanger, condenser and nitrogen recycling tank, and described heat exchanger one end is connected with vacuum pump, the other end and condensation
Device is connected, and the condenser other end is connected with nitrogen recycling tank, and condensing recovery valve is offered below condenser.
3. a kind of exhaust treatment system of low concentration VOCs as claimed in claim 1 or 2, it is characterised in that: the absorption
Intake valve and desorption nitrogen inlet valve respectively on one, the upper and lower ends of absorber are once set.
4. a kind of exhaust treatment system of low concentration VOCs as claimed in claim 3, it is characterised in that: the pretreatment is set
Standby is one of filtration dust catcher or wet scrubber.
5. a kind of exhaust treatment system of low concentration VOCs as claimed in claim 4, it is characterised in that: the filtering type removes
Dirt device is one of sack cleaner or gravel bed filter.
6. a kind of exhaust treatment system of low concentration VOCs as claimed in claim 4, it is characterised in that: the wet dust removal
Device is gravity spray wet deduster, cyclone type wet scrubber, auto-excitation type wet scrubber, material filling type wet scrubber, bubble
One of foam rotating vane type deduster, venturi wet dust collector.
7. a kind of exhaust treatment system of low concentration VOCs as described in claim 1, it is characterised in that: the blower and true
The flow passage components of sky pump are coated with polytetrafluorethylecoatings coatings.
8. a kind of exhaust treatment system of low concentration VOCs as described in claim 1, it is characterised in that: further include thering is VOCs to exist
Line monitor, the VOCs on-line computing model are installed on the waste gas outlet valve of absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822125516.5U CN209612502U (en) | 2018-12-18 | 2018-12-18 | A kind of exhaust treatment system of low concentration VOCs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822125516.5U CN209612502U (en) | 2018-12-18 | 2018-12-18 | A kind of exhaust treatment system of low concentration VOCs |
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| CN209612502U true CN209612502U (en) | 2019-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110812876A (en) * | 2019-12-23 | 2020-02-21 | 麦德科技(无锡)有限公司 | Emission reduction system of organic solvent cleaning equipment |
-
2018
- 2018-12-18 CN CN201822125516.5U patent/CN209612502U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110812876A (en) * | 2019-12-23 | 2020-02-21 | 麦德科技(无锡)有限公司 | Emission reduction system of organic solvent cleaning equipment |
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