CN202155134U - Environment-friendly device for recovering and treating solvents in tail gas - Google Patents
Environment-friendly device for recovering and treating solvents in tail gas Download PDFInfo
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- CN202155134U CN202155134U CN2011202266603U CN201120226660U CN202155134U CN 202155134 U CN202155134 U CN 202155134U CN 2011202266603 U CN2011202266603 U CN 2011202266603U CN 201120226660 U CN201120226660 U CN 201120226660U CN 202155134 U CN202155134 U CN 202155134U
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Abstract
The utility model provides an environment-friendly device for recovering and treating solvents in tail gas, comprising an automatic control system, a tail gas inlet, a fan, an adsorption tower A, an adsorption tower B, a steam inlet, a desorption condenser, a chromatography slot and a purified gas outlet, as well as corresponding pipelines and valves, wherein the opening and closing states of the four valves correspond to two connection ways including the way of connecting in series and the way of connecting in parallel; adsorption material is activated carbon particles or activated carbon fiber; and the adsorption tower A and the adsorption tower B are connected with the fire-fighting pipelines. In tail gas treatment, the environment-friendly device correspondingly adopts the two connection ways; in the way of connecting in series, twice adsorption is conducted successively, so that the adsorption efficiency is high, the speed is in high in desorption, the solvent recovering rate is high, the environment protection is realized, and the solvents are prevented from being wasted; and an alarm component and a fire-fighting component can ensure the safe running of the whole device. The environment-friendly device is applicable to treating various tail gas containing solvents.
Description
Technical field
The utility model relates to processing and the recycle device of beneficiating ingredient of the tail gas of chemical enterprise emission, especially contains the environmental protecting device that solvent recovery is administered in the tail gas of secondary absorption.
Background technology
Utilize adsorption tower that chemical industry class tail gas is adsorbed earlier, the process of carrying out desorb then is the conventional exhaust gas treating method of chemical enterprise.Sorbing material is commonly used has activated carbon, perlite etc., and what the desorb medium was commonly used is steam, hot-air etc., and adsorption tower can be single or a plurality of parallel connections.Such handling process is too simple, and the composition to be recycled in the tail gas absorbs not too clean, and treatment effect is not ideal.
Number of patent application is disclosed a kind of method and device that reclaims solvent in the coating tail gas with desorption method in 200510037985.6 the specification.Mixed tail gas is adsorbed organic solvent through adsorbent after cooling off, during desorption, cucurbitula is separated in the steam feeding, steam is directly contacted with adsorbent, thereby make steam and organic solvent produce azeotropic point.Use the device of this method to comprise blower fan; The air intake of said blower fan connects separates absorption cooler; The port of export of said blower fan is connected with the air inlet of separating cucurbitula through pipeline, the said evaporation mouth of separating cucurbitula through pipeline with separate absorption cooler and be connected, the said absorption cooler of separating is connected with separator.This method is a kind of exhaust gas treating method that generally uses now, and the processing speed and the rate of recovery are all not high.
The process unit of multiple adsorption tower adsorption-desorption introduced in 2004 the 6th phases " carbon fiber adsorption and catalytic combustion reclaims the cyclohexane in the tail gas " literary composition of " design of sulphur phosphorus and powder technology " magazine publication; A plurality of adsorption towers wherein promptly are to adopt the parallel structure of 3 towers; Have only carrying out respectively or synchronously of absorption, desorb, dry three technical process; Do not have the function of secondary absorption successively, adsorption rate has improved, but the rate of recovery of effective ingredient does not improve.
Number of patent application is disclosed a kind of employing second adsorption method for organic waste gas recovery in 200910169851.8 the specification, with organic exhaust gas through once absorption; Once reclaim; Second adsorption; An absorber cooling; The secondary desorption; Secondary recovery; The method that the process of second adsorption device cooling reclaims; Adopting the method for second adsorption, realize that the circulation desorption gas that returns an absorber is low solvent strength gas, is that an absorber realizes that the low residual amt desorption provides necessary condition, can realize adsorbing than reaching higher ratio.But this method energy consumption is higher, the function singleness of each part of appliance, and handling process is long, and processing speed is not good enough.
The utility model content
The utility model purpose: overcome effective ingredient in traditional tail gas and reclaim the defective that speed and the rate of recovery can not be taken into account, the utility model provides a kind of environmental protecting device that adopts solvent recovery improvement in the tail gas that secondary absorption, processing speed and the rate of recovery all can improve.
Technical scheme: the utility model provides the environmental protecting device that solvent recovery is administered in a kind of tail gas; Contain robot control system(RCS), gas inlet, blower fan, adsorption tower A, steam inlet, desorb condenser, chromatography groove, clean gas outlet; Other contains tail gas valve, purified gas valve that corresponding pipeline and control piper open or close, contains the solvent vapo(u)r valve, also contains adsorption tower B, connects 4 valves of pipeline, control adsorption tower A and the adsorption tower B type of attachment of adsorption tower B.The corresponding decision of the on off state of 4 valves has following two kinds of types of attachment:
I, adsorption tower A (5) and adsorption tower B (6) are parallel: valve one, valve two, valve three, valve four often close, and all the other valves need normal switch by handling process.
II, adsorption tower A (5) and adsorption tower B (6) tandem: valve one is often opened with valve four, and valve two is normally closed with valve three; Perhaps, valve two is often opened with valve three, and valve one is normally closed with valve four; All the other valves need normal switch by handling process.
Described tail gas is organic solvent and AIR MIXTURES; Solvent is pentane, hexane, heptane, octane, regular gasoline, 120# gasoline, 150# solvent naphtha, benzinum, benzene,toluene,xylene, carrene, chloroform, dichloroethanes, dichloroethylene, chlorobenzene, Ethyl formate, ethyl acetate, ethyl propionate, methyl alcohol, ethanol, acetone or this organic solvent of butanone, perhaps is any mixture of above-mentioned solvent.
Described gas inlet place or be connected with the emptying pipeline and an emptying valve uses during the supplying apparatus maintenance.
Sorbing material among described adsorption tower A and the adsorption tower B is active carbon particle, activated carbon plate, activated carbon fiber, activated carbon fiber braid or their combination in any, and can arrange is one or more layers.
Described steam gets into steam pipework from the steam inlet, and steam pipework is connected with steam valve.
Described valve can be automatic control type, type hand or automatic control and manual double-acting type.During automatic control, valve has the on off state feedback function, connects robot control system(RCS), and robot control system(RCS) can be controlled the switch motion and the switch time of each valve; Valve maybe can have the abnormal alarm function.The kind of described valve can be ball valve, gate valve, check-valves or butterfly valve.
In the utility model, described tail gas preferably gets into from the upper end of adsorption tower A or adsorption tower B, and purified gas is discharged from the lower end of adsorption tower A or adsorption tower B, and the tail gas absorption time of staying prolongs, and adsorption effect is better.Steam preferably gets into from the bottom of adsorption tower A or adsorption tower B, contains solvent vapo(u)r and discharges from the top of adsorption tower A or adsorption tower B, and desorption rate is fast, and the desorb discharging thoroughly.
The bottom of described adsorption tower A and adsorption tower B also can be connected with waste water pipeline and waste water valve, so that condensed water in the discharge pipe and waste water.
Can be connected with air cooler in the pipeline behind the described blower fan, before the adsorption tower, to reduce the temperature that tail gas gets into the absorption tower; Can be connected with in the pipeline behind the desorb condenser, before the chromatography groove and separate absorption cooler, reduce the temperature that solvent and water mixed liquid get into the chromatography groove.
Described adsorption tower A, adsorption tower B all can be connected with fire main, fire main is connected with N
2Deng the inlet of inert gas, be connected with the fire-fighting valve in the fire main.Among adsorption tower A and the adsorption tower B or be connected with the fire protection warning device.In case of emergency or behind the fire protection warning, get into fire fighting state, fire-fighting valve open, N in the fire protection pipeline
2Get into two adsorption towers Deng inert gas or water vapour.
Described chromatography groove can also be connected with the gas balance pipeline, in the gas balance pipeline or be connected with a compensation flap, supplies the gas in the discharging chromatography groove, keeps balanced with extraneous air pressure.
Maybe can be connected with pipe fittings such as steam trap, spark arrester, floor drain in the pipeline of described device, maybe can be connected with instruments such as thermometer, liquid level gauge, operation signal display instrument, indicator, recorder in the pipeline.
Can also be connected with other pipeline in the whole device, so that parallel connection or other the adsorption tower of connecting, with the adsorption rate and the rate of recovery of solvent in the further raising tail gas.
Beneficial effect: the device of the utility model, can select multiple adsorption-desorption pattern according to the amount of tail gas, control flexible and variedly, automaticity is high.When adsorption tower A and adsorption tower B second adsorption, solvent recovering rate is high, the solvent≤100mg/m in the purified gas
3, both compliance with environmental protection requirements effectively prevented the waste of solvent resource again.During an adsorption tower absorption, the desorb simultaneously of another adsorption tower, circulation is carried out, and processing speed is fast, can reach all desirable effect of processing speed and solvent recovering rate.And the inflow of the tail gas in device pipeline, steam inflow pipeline, the discharge line that contains solvent vapo(u)r, the discharge line of purified gas, the discharge line of waste water all are provided with rationally, and flow process is short, and it is clear to shunt.Warning and fire-fighting function, equalizing line etc. can be guaranteed whole device safe operation.The utility model is applicable to the improvement that contains solvent tail gas of multiple industrial enterprise and the recycling of solvent.
Description of drawings
Accompanying drawing is the structural representation of the utility model except that robot control system(RCS);
Among the figure: 1, gas inlet; 2, blower fan; 3, air cooler; 4, tail gas valve; 5, adsorption tower A; 6, adsorption tower B; 7, valve one; 8, valve two; 9, valve three; 10, valve four; 11, fire-fighting valve; 12, steam inlet; 13, steam valve; 14, purified gas valve; 15, clean gas outlet; 16, waste water valve; 17, contain the solvent vapo(u)r valve; 18, desorb condenser; 19, separate absorption cooler; 20, chromatography groove; 21, emptying valve; 22, compensation flap.
The specific embodiment
Choose the various functional parts shown in accompanying drawing, each parts are coupled together with corresponding pipeline.
Wherein, Gas inlet 1, blower fan 2, adsorption tower A5, steam inlet 12, desorb condenser 18, chromatography groove 20, clean gas outlet 15; Tail gas valve 4, purified gas valve 14 that corresponding pipeline and control corresponding pipeline open or close are arranged, contain solvent vapo(u)r valve 17; Also contain adsorption tower B6, connect the pipeline, control adsorption tower A5 of adsorption tower B6 and 4 valves of adsorption tower B6 type of attachment, the on off state of 4 valves is corresponding to two kinds of types of attachment among embodiment 1 and the embodiment 2:
Embodiment 1
Adopt parallel type of attachment: valve 1, valve 28, valve 39, valve 4 10 often close, and all the other valves need normal switch by handling process.
Described tail gas is solvent and AIR MIXTURES, and solvent is a hexane.Sorbing material among described adsorption tower A5 and the adsorption tower B6 is an active carbon particle.
Described valve is automatic control type, connects robot control system(RCS), and robot control system(RCS) can be controlled the switch motion and the switch time of each valve.Described steam is 12 entering steam pipeworks from the steam inlet, and steam pipework is connected with steam valve 13.
Described tail gas gets into from the upper end of adsorption tower A5 or adsorption tower B6, and purified gas is discharged from the lower end of adsorption tower A5 or adsorption tower B6.Steam gets into from the bottom of adsorption tower A5 or adsorption tower B6, contains solvent vapo(u)r and discharges from the top of adsorption tower A5 or adsorption tower B6.
After device starts, contain the tail gas of solvent, carry by the road by blower fan 2.Tail gas gets into adsorption tower A5 and adsorption tower B6 simultaneously, and this moment, adsorption tower A5 and adsorption tower B6 showed as parallel type of attachment; Solvent in the adsorbents adsorb tail gas in the adsorption tower, remaining purified gas flows out from the purified gas pipeline; After reaching the adsorption time of setting, from steam pipework, feed steam in adsorption tower A5 and adsorption tower B6, the solvent of active carbon adsorption is carried out desorb.What desorb contains solvent vapo(u)r through 18 condensations of desorb condenser, gets into chromatography groove 20 chromatographies; Hexane solvent in chromatography groove 20 reclaims, and the water in the chromatography groove 20 discharges.
Adopt the tandem type of attachment: valve 1, valve 4 10 are often opened, and valve 28, valve 39 are normally closed; Perhaps, valve 28, valve 39 are often opened, and valve 1, valve 4 10 are normally closed; All the other valves need normal switch by handling process.
Described tail gas is solvent and AIR MIXTURES, and solvent is the mixture of regular gasoline, 120# gasoline.Described gas inlet 1 place is connected with emptying pipeline and an emptying valve 21, uses during the supplying apparatus maintenance.Be connected with air cooler 3 before blower fan 2 backs, the adsorption tower A5.Sorbing material among described adsorption tower A5 and the adsorption tower B6 is that activated carbon fiber arranges is 3 layers.
Described valve is automatic control and manual double-acting type.During automatic control, valve has the on off state feedback function, connects robot control system(RCS), and robot control system(RCS) can be controlled the switch motion and the switch time of each valve; Valve has the abnormal alarm function.The kind of described valve is in one of ball valve, gate valve, check-valves and butterfly valve or several kinds.
Described steam is 12 entering steam pipeworks from the steam inlet, and steam pipework is connected with steam valve 13.Described tail gas gets into from the upper end of adsorption tower A5 or adsorption tower B6, and purified gas is discharged from the lower end of adsorption tower A5 or adsorption tower B6.Steam gets into from the bottom of adsorption tower A5 or adsorption tower B6, contains solvent vapo(u)r and discharges from the top of adsorption tower A5 or adsorption tower B6.The bottom of described adsorption tower A5 and adsorption tower B6 also is connected with waste water pipeline and waste water valve 16, so that condensed water in the discharge pipe and waste water.
Described adsorption tower A5, adsorption tower B6 all are connected with fire main, fire main is connected with N
2Deng the inlet of inert gas, be connected with fire-fighting valve 11 in the fire main.Be connected with the fire protection warning device among adsorption tower A5 and the adsorption tower B6.Behind fire protection warning, get into fire fighting state, fire-fighting valve 11 is opened, N in the fire protection pipeline
2Get into two adsorption towers Deng inert gas.
Described chromatography groove 20 also is connected with the gas balance pipeline, is connected with a compensation flap 22 in the gas balance pipeline, supplies the gas in the discharging chromatography groove 20, keeps balanced with extraneous air pressure.
After device starts, contain the tail gas of solvent, carry by the road by blower fan 2.Tail gas gets into adsorption tower B6 absorption after being introduced into adsorption tower A5 absorption again, and the adsorbent in two adsorption towers divides the solvent in the priority second adsorption tail gas, and remaining purified gas flows out from the purified gas pipeline.After reaching the adsorption time of setting, from steam pipework, feed steam in adsorption tower A5 and adsorption tower B6, the solvent of active carbon adsorption is carried out desorb; Then, adsorption tower A5 and adsorption tower B6 circulate in turn and adsorb and desorption process.The steam that contains regular gasoline and 120# gasoline that desorbs through separating absorption cooler 19 coolings, gets into chromatography groove 20 chromatographies again through 18 condensations of desorb condenser.Regular gasoline in chromatography groove 20 and 120# gasoline are given layering and are reclaimed, and the water in the chromatography groove 20 is discharged into the waste water pipeline and flows out, and the waste water in the adsorption tower also flows out from the waste water pipeline.
Claims (8)
1. the environmental protecting device that solvent recovery is administered in the tail gas; Contain robot control system(RCS), gas inlet (1), blower fan (2), adsorption tower A (5), steam inlet (12), desorb condenser (18), chromatography groove (20), clean gas outlet (15); Other contains tail gas valve (4), purified gas valve (14) that corresponding pipeline and control piper open or close, contains solvent vapo(u)r valve (17); It is characterized in that: also contain 4 valves of pipeline, control adsorption tower A (5) and adsorption tower B (6) type of attachment of adsorption tower B (6), connection adsorption tower B (6), the corresponding decision of the on off state of 4 valves has following two kinds of types of attachment:
I, adsorption tower A (5) and adsorption tower B (6) are parallel: valve one (7), valve two (8), valve three (9), valve four (10) normal closing, and all the other valves need normal switch by handling process;
II, adsorption tower A (5) and adsorption tower B (6) tandem: valve one (7) and valve four (10) are often opened, and valve two (8) and valve three (9) are normally closed; Perhaps, valve two (8) and valve three (9) are often opened, and valve one (7) and valve four (10) are normally closed; All the other valves need normal switch by handling process;
Described tail gas is organic solvent and AIR MIXTURES;
An emptying pipeline and an emptying valve (21) are located or be connected with to described gas inlet (1);
Sorbing material among described adsorption tower A (5) and the adsorption tower B (6) is active carbon particle, activated carbon plate, activated carbon fiber, activated carbon fiber braid or their combination in any, and arranging is one or more layers;
(12) get into steam pipework to described steam from the steam inlet, and steam pipework is connected with steam valve (13);
Described valve is automatic control type, type hand or automatic control and manual dual-mode type; During automatic control, valve has the on off state feedback function, connects robot control system(RCS), and robot control system(RCS) can be controlled the switch motion and the switch time of each valve; Described valve or have the abnormal alarm function.
2. the environmental protecting device that solvent recovery is administered in the tail gas according to claim 1 is characterized in that: described tail gas gets into from the upper end of adsorption tower A (5) or adsorption tower B (6), and purified gas is discharged from the lower end of adsorption tower A (5) or adsorption tower B (6); Steam gets into from the bottom of adsorption tower A (5) or adsorption tower B (6), contains solvent vapo(u)r and discharges from the top of adsorption tower A (5) or adsorption tower B (6).
3. the environmental protecting device that solvent recovery is administered in the tail gas according to claim 1 and 2, it is characterized in that: the bottom of described adsorption tower A (5) and adsorption tower B (6) is connected with waste water pipeline and waste water valve (16).
4. the environmental protecting device that solvent recovery is administered in the tail gas according to claim 1; It is characterized in that: be connected with air cooler (3) in the pipeline before described blower fan (2) back, the adsorption tower, in the preceding pipeline in desorb condenser (18) back, chromatography groove (20) or be connected with and separate absorption cooler (19).
5. the environmental protecting device that solvent recovery is administered in the tail gas according to claim 1 and 2, it is characterized in that: described adsorption tower A (5), adsorption tower B (6) all are connected with fire main, fire main is connected with N
2The inlet of gas or water vapour is connected with fire-fighting valve (11) in the fire main; Among adsorption tower A (5) and the adsorption tower B (6) or be connected with the fire protection warning device; In case of emergency or behind the fire protection warning, fire-fighting valve (11) can be opened, N in the fire protection pipeline
2Gas or water vapour get into two adsorption towers.
6. the environmental protecting device of administering according to solvent recovery in claim 1 or the 4 described tail gas, it is characterized in that: described chromatography groove (20) is connected with the gas balance pipeline, in the gas balance pipeline or be connected with a compensation flap (22).
7. the environmental protecting device that solvent recovery is administered in the tail gas according to claim 1; It is characterized in that: in the pipeline of described device or be connected with steam trap, spark arrester, these pipe fittings of floor drain, in the pipeline or be connected with thermometer, liquid level gauge, operation signal display instrument, indicator, these instruments of recorder.
8. the environmental protecting device of administering according to solvent recovery in claim 1 or the 7 described tail gas is characterized in that: be connected with other pipeline in the described whole device, so that parallel connection or other the adsorption tower of connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202266603U CN202155134U (en) | 2011-06-30 | 2011-06-30 | Environment-friendly device for recovering and treating solvents in tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202266603U CN202155134U (en) | 2011-06-30 | 2011-06-30 | Environment-friendly device for recovering and treating solvents in tail gas |
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| Publication Number | Publication Date |
|---|---|
| CN202155134U true CN202155134U (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202266603U Expired - Lifetime CN202155134U (en) | 2011-06-30 | 2011-06-30 | Environment-friendly device for recovering and treating solvents in tail gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266703A (en) * | 2011-06-30 | 2011-12-07 | 陆书明 | Environment-friendly device for recycling and treating solvents in tail gas |
| CN109966856A (en) * | 2017-12-27 | 2019-07-05 | 震旦（中国）有限公司 | A kind of coating tail gas end-o f-pipe -control device |
| CN110302629A (en) * | 2019-06-12 | 2019-10-08 | 苏州工业园区瑞丰源环保科技有限公司 | Intelligent activated carbon adsorption recyclable device |
-
2011
- 2011-06-30 CN CN2011202266603U patent/CN202155134U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266703A (en) * | 2011-06-30 | 2011-12-07 | 陆书明 | Environment-friendly device for recycling and treating solvents in tail gas |
| CN109966856A (en) * | 2017-12-27 | 2019-07-05 | 震旦（中国）有限公司 | A kind of coating tail gas end-o f-pipe -control device |
| CN110302629A (en) * | 2019-06-12 | 2019-10-08 | 苏州工业园区瑞丰源环保科技有限公司 | Intelligent activated carbon adsorption recyclable device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120307 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |