CN206996195U - A kind of controllable organic exhaust gas circulation desorption system of concentration - Google Patents
A kind of controllable organic exhaust gas circulation desorption system of concentration Download PDFInfo
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- CN206996195U CN206996195U CN201720842637.4U CN201720842637U CN206996195U CN 206996195 U CN206996195 U CN 206996195U CN 201720842637 U CN201720842637 U CN 201720842637U CN 206996195 U CN206996195 U CN 206996195U
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- exhaust gas
- organic exhaust
- desorption
- temperature control
- control box
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of controllable organic exhaust gas of concentration to circulate desorption system, including temperature control box, adsorption tower, surge tank, backflow blower fan and after-treatment device, the temperature control box, adsorption tower, surge tank and after-treatment device are sequentially connected by pipeline, reflux line is additionally provided between the temperature control box and the surge tank, the backflow blower fan is arranged on the reflux line.The system not only increases organic exhaust gas concentration in desorption air-flow, reduces the energy loss of aftertreatment device；And desorption air flow rate is reduced, subsequent processing device volume is diminished.And due to being repeatedly desorbed, desorption temperature can be suitably reduced, the security performance of system is improved.
Description
Technical field
It the utility model is related to technical field of waste gas treatment, and in particular to a kind of controllable organic exhaust gas circulation desorption of concentration
System.
Background technology
Processing for Wind Volume, low-concentration organic exhaust gas, Adsorption Concentration and the process integration of burning processing obtain extensively
Using.Traditional adsorption/desorption technique fixes adsorption tower frequently with multibed type, as the adsorption/desorption tower of double bed type heat, organic exhaust gas are first
First pass through one of adsorbent bed and carry out adsorption treatment, the pure air after purification passes through smoke stack emission；When adsorbent absorption is full
With it is rear, organic exhaust gas carries out purified treatment by valve transfer to another adsorbent bed, and the adsorbent bed of adsorption saturation passes through
Subsequent combustion processing unit is led to after thermal desorption air-flow desorption, so as to which VOCs treatment be fallen, such as patent CN203389497U
With patent CN203447935U etc..
Macroscopical desorption rate of organic exhaust gas is adsorbed onto speed (adsorption rate) and the dirt of adsorbent with contaminant molecule
Speed (desorption rate) microcosmic condition that dye thing molecule discharges from adsorbent is relevant, works as desorption rate>During adsorption rate, have
Machine thing can be discharged continuously from adsorbent, and its final state is that both reach dynamic equilibrium.The macroscopic view of organic exhaust gas takes off
Mainly the vacuum with equipment, the partial pressure for being desorbed the gas flow of air-flow, temperature and pollutant determine attached speed.Under normal pressure
Desorption system, it is usually taken and controls the temperature for being desorbed air-flow to control the desorption rate of organic exhaust gas, for what is industrially commonly used
Acticarbon, due to can not be too high with inflammable characteristic, usual desorption temperature, therefore, this method exists and needed as follows
Want improved place：First, because desorption temperature is not high, it is desorbed air-flow and adsorbent time of contact is shorter, for a certain amount of
Desorption gas, organic exhaust gas reach far away desorption equilibrium state, and desorption is less efficient；Second, in order to play a part of concentration, lead to
Often desorption air flow rate is 1/5-1/20 of adsorption gas flow or so, and desorption air flow rate is small, and pollutant desorption efficiency is low；Third,
With the progress of desorption, being desorbed the concentration of organic exhaust gas in air-flow gradually reduces.In general, the system is due to desorption temperature
Not high, desorption air flow rate is smaller, and pollutant desorption is less efficient.
In order to improve the desorption efficiency of desorption air-flow, before the part after desorption being contained into organic exhaust gas recirculation to adsorption tower,
After being mixed with cleaning desorption gas, adsorbent is repeatedly desorbed.With following purpose：First, because desorption temperature is low, take off
Attached flow is small, and desorption efficiency is low, and desorption air-flow reaches far away poised state with the pollutant on adsorbent, and backflow can be to adsorbent
Repeatedly it is desorbed, improves desorption air stream contamination thing concentration；Second, due to the effect of backflow, air-flow is desorbed for adsorption tower
Flow increases, and pollutant desorption efficiency improves, and compared with tradition takes off and pays bed, can suitably reduce desorption temperature, improve the peace of system
Full performance；3rd, because desorption air-flow is refluxed, the processing load of subsequent treatment facility can be reduced.The utility model be
This aspect is put into practice and verified.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of concentration controllable organic exhaust gas
Desorption system is circulated, the system can improve desorption air-flow desorption efficiency, at utmost be enriched with organic exhaust gas, reduce equipment for after-treatment
Volumetric loading and energy consumption, organic exhaust gas desorption rate is controlled, reduce desorption gas flow temperature, improve security of system.
The purpose of this utility model is achieved through the following technical solutions：A kind of controllable organic exhaust gas circulation desorption system of concentration
System, including temperature control box, adsorption tower, surge tank, backflow blower fan and after-treatment device, the temperature control box, adsorption tower, surge tank and after
Processing unit is sequentially connected by pipeline, and reflux line, the backflow wind are additionally provided between the temperature control box and the surge tank
Machine is arranged on the reflux line.
Organic exhaust gas after partial detachment is back to temperature control box by the utility model, after being mixed with fresh organic exhaust gas, energy
Enough multiple desorptions realized to organic exhaust gas.
Pipeline before the temperature control box is provided with control valve, and control valve also is provided with the pipeline after the surge tank.
Heater is provided with the temperature control box.
Temperature detector, moisture detector and pressure detector are additionally provided with the temperature control box.
Temperature detector, pressure detector and concentration detector are provided with the surge tank.
Organic exhaust gas circulation desorption system also include being used for controlling temperature control box, adsorption tower, surge tank, backflow blower fan and
The programmed controller and visualized management device of control valve.
Compared with prior art, the utility model has the following advantages that：
(1) the utility model can improve desorption efficiency using before the part organic exhaust gas after desorption is back into adsorption tower,
Organic exhaust gas concentration is further enriched with, reduces the processing volume load and energy consumption of follow-up equipment；
(2) control to organic exhaust gas concentration can be achieved by controlling mixture temperature and backflow air quantity in the utility model
System；
(3) due to being repeatedly desorbed, desorption efficiency improves the utility model, can suitably reduce desorption temperature, improves system
Security performance.
Brief description of the drawings
Fig. 1 is that the controllable organic exhaust gas of the concentration in embodiment circulates desorption system flow chart.
Shown in figure：1st, temperature control box；2nd, adsorption tower；3rd, surge tank；4th, flow back blower fan；5th, after-treatment device；6th, pipeline；7、
Reflux line；8th, control valve.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the organic exhaust gas circulation desorption system that the concentration of the present embodiment offer is controllable, including temperature control box 1, suction
Attached tower 2, surge tank 3, backflow blower fan 4 and after-treatment device 5, temperature control box 1, adsorption tower 2, surge tank 3 and after-treatment device 5 pass through
Pipeline 6 is sequentially connected, and reflux line 7 is additionally provided between temperature control box 1 and surge tank 3, and backflow blower fan 4 is arranged on reflux line 7.
Wherein temperature control box 1 is used to adjust the gas flow temperature into adsorption tower 2；Adsorption tower 2 is used to be desorbed organic exhaust gas, buffers
Tank 3 is used to store the organic exhaust gas for being desorbed out by adsorption tower 2, and backflow blower fan 4 is used for part airflow reflux in surge tank 3 extremely
Temperature control box 1, after being mixed with desorption air-flow, it can realize to the multiple desorption of adsorbed gas and concentration；After-treatment device 5 is used for slow
Rush the organic exhaust gas in tank 3 and carry out qualified discharge after deep purifying processing.
Pipeline before temperature control box 1 is provided with control valve 8, and control valve 8 also is provided with the pipeline after surge tank 3.To
The keying of control piper.
Heater is provided with temperature control box 1.Heating can be to directly heat and indirectly heat.Specifically, can be that heat exchanger adds
Heat, Far-infrared Heating, electrical heating and fuel heating etc. it is one or more of.
Temperature detector, moisture detector and pressure detector are additionally provided with temperature control box 1.To monitor the temperature in temperature control box
Degree, humidity and pressure.
Temperature detector, pressure detector and concentration detector are provided with surge tank 3.
Organic exhaust gas circulation desorption system also includes being used to control temperature control box, adsorption tower, surge tank, backflow blower fan and control
The programmed controller and visualized management device of valve.To control temperature control box temperature, backflow fan delivery, it is organic to reach regulation
The purpose of exhaust gas concentration.
During system operation, two control valves can be closed, system is turned into the backflow gas circuit of a closing, in backflow blower fan
Under 4 backflow effect, gas constantly circulates, and with the extension of desorption time, the concentration of organic exhaust gas tends to be steady in atmosphere
Fixed, both organic molecule progressivelyed reach dynamic equilibrium relation in gas phase and solid phase.System is by adjusting the air-flow in temperature control box 1
Temperature, to regulate and control the desorption rate of the organic exhaust gas of adsorption tower 2, so as to reach the purpose of control desorption gas concentration.When desorption air-flow
Reach when imposing a condition, open two valves, part organic exhaust gas is introduced into aftertreatment device, other part is back to temperature control
Case 1, after being well mixed with the fresh desorption air-flow of introducing, adsorbent is desorbed.
It is desorbed air-flow and brings the organic exhaust gas that adsorption tower 2 discharges into surge tank 3, part introduces after-treatment device 5
Advanced treating is carried out, temperature control box 1 is partly back to by the blower fan 4 that flows back, after being mixed with fresh desorption air-flow, adsorption tower 2 is entered
Row is repeatedly desorbed.
The controllable organic exhaust gas circulation desorption system of concentration in the utility model has following features：
(1) temperature of air-flow can be desorbed in temperature control box 1 by controlling, adjusts the rate of release of organic exhaust gas in adsorption tower 2,
And desorption airflow characteristic is monitored by surge tank 3；
(2) by the effect for the blower fan 4 that flows back, post processing exhaust gas flow is reduced, so as to reduce the volume of after-treatment device
Load and energy loss；
(3) because multiple desorption, air-flow desorption efficiency are improved, can suitably reduce desorption temperature, improve system
Security performance.
Above-mentioned case not limits protection of the present utility model merely to illustrate embodiment of the present utility model according to this
Scope, therefore for those of ordinary skill in the field, other not similar shapes can also be made on the basis of the above description
The change or variation of formula.There is no necessity and possibility to exhaust all the enbodiments.It is all it is of the present utility model spirit and
All any modification, equivalent and improvement made within principle etc., it should be included in the protection model of the utility model claims
Within enclosing.
Claims (6)
1. a kind of controllable organic exhaust gas circulation desorption system of concentration, it is characterized in that：Including temperature control box, adsorption tower, surge tank, return
Flow fan and after-treatment device, the temperature control box, adsorption tower, surge tank and after-treatment device are sequentially connected by pipeline, described
Reflux line is additionally provided between temperature control box and the surge tank, the backflow blower fan is arranged on the reflux line.
2. the controllable organic exhaust gas circulation desorption system of concentration according to claim 1, it is characterized in that：Before the temperature control box
Pipeline be provided with control valve, also be provided with control valve on the pipeline after the surge tank.
3. the controllable organic exhaust gas circulation desorption system of concentration according to claim 1 or 2, it is characterized in that：The temperature control
Heater is provided with case.
4. the controllable organic exhaust gas circulation desorption system of concentration according to claim 3, it is characterized in that：In the temperature control box
It is additionally provided with temperature detector, moisture detector and pressure detector.
5. the controllable organic exhaust gas circulation desorption system of concentration according to claim 4, it is characterized in that：In the surge tank
Provided with temperature detector, pressure detector and concentration detector.
6. the controllable organic exhaust gas circulation desorption system of concentration according to claim 5, it is characterized in that：The organic exhaust gas
Circulation desorption system also includes being used for the Programmed control for controlling temperature control box, adsorption tower, surge tank, backflow blower fan and control valve
Device and visualized management device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720842637.4U CN206996195U (en) | 2017-07-12 | 2017-07-12 | A kind of controllable organic exhaust gas circulation desorption system of concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720842637.4U CN206996195U (en) | 2017-07-12 | 2017-07-12 | A kind of controllable organic exhaust gas circulation desorption system of concentration |
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| Publication Number | Publication Date |
|---|---|
| CN206996195U true CN206996195U (en) | 2018-02-13 |
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ID=61453850
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| CN201720842637.4U Active CN206996195U (en) | 2017-07-12 | 2017-07-12 | A kind of controllable organic exhaust gas circulation desorption system of concentration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579324A (en) * | 2018-07-11 | 2018-09-28 | 湖南科技大学 | It is a kind of to recycle Br in brominated flue gas2Device and method |
| CN109529529A (en) * | 2018-12-29 | 2019-03-29 | 江苏苏净集团有限公司 | A kind of analog processing system of volatile organic compounds |
-
2017
- 2017-07-12 CN CN201720842637.4U patent/CN206996195U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579324A (en) * | 2018-07-11 | 2018-09-28 | 湖南科技大学 | It is a kind of to recycle Br in brominated flue gas2Device and method |
| CN108579324B (en) * | 2018-07-11 | 2023-05-09 | 遵义师范学院 | Br in recovered bromine-containing flue gas 2 Apparatus and method of (a) |
| CN109529529A (en) * | 2018-12-29 | 2019-03-29 | 江苏苏净集团有限公司 | A kind of analog processing system of volatile organic compounds |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190520 Address after: 510000 Room 311A, Building B, Qiangsheng Business Building, 6 Xiabei Middle Road, Huangshijie, Baiyun District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Beirui Precision Instrument Co., Ltd. Address before: 510430 Room 506, Rongxi Industrial Street, Shixia Road, Baiyun District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Environment Technology Co., Ltd. |
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| TR01 | Transfer of patent right |