CN103398571B - Drying system capable of efficiently recycling organic waste gas - Google Patents
Drying system capable of efficiently recycling organic waste gas Download PDFInfo
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- CN103398571B CN103398571B CN201310314070.XA CN201310314070A CN103398571B CN 103398571 B CN103398571 B CN 103398571B CN 201310314070 A CN201310314070 A CN 201310314070A CN 103398571 B CN103398571 B CN 103398571B
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Abstract
The invention discloses a drying system capable of efficiently recycling organic waste gas. The drying system comprises drying equipment and a molecular sieve turning wheel. The drying equipment and the molecular sieve turning wheel form a circulation circuit, a first cooling unit heat exchanger is arranged on an inlet side of the molecular sieve turning wheel, a second heating unit heat exchanger is arranged on an outlet side of the molecular sieve turning wheel, a desorption area and an adsorption area are arranged on the molecular sieve turning wheel, the adsorption area is connected with the first cooling unit heat exchanger and the second heating unit heat exchanger, and an organic solvent recycling pipeline is connected with the desorption area. The drying system has the advantages that the drying equipment and the molecular sieve turning wheel form the circuit, the organic waste gas in the drying equipment is cooled and then is filled into the adsorption area, then organic solvents are adsorbed, clean air is heated and then is filled into the drying equipment to be recycled, the organic solvents and heat dissipated by the organic solvents are recycled by the organic solvent recycling pipeline which is connected with the desorption area, adsorption consumables for the system are omitted, pollution can be reduced owing to the fact that the organic waste gas is recycled, the efficiency of the system is improved, and the drying system is used in the field of environment-friendly waste gas treatment.
Description
Technical field
The present invention relates to a kind of drying system, particularly relate to a kind of drying system of recyclable organic exhaust gas.
Background technology
The operation principle of the drying plant in the similar process equipment such as traditional coating machine, compounding machine, printing machine, roller coating line, gluing machine be all by the natural air in environment through heated transportation in baking oven, after hot-air brushes product, force the organic solvent evaporation on product to become after organic vapor mixes with the air entering baking oven and form organic exhaust gas, then by organic exhaust gas by discharged in air.
But this type of drying mode exists following problem: 1. organic solvent is to human body and bad environmental, directly discharge causes polluting; 2. there is pole in waste gas and have the organic solvent of economic worth and a large amount of heats, effectively can not reclaim, consume energy high; 3. just need to reduce the flow of fresh air for reducing the energy consumption adding hot-air, but the concentration of organic steam can be caused like this to exceed explosion limit to blast accident, there is potential safety hazard.
As a kind of improvement project of above-mentioned drying unit, active carbon or the organic exhaust gas of the porous material based on active carbon to discharge is used to carry out adsorption treatment, namely the majority of organic solvent in organic exhaust gas can be reclaimed, but there is following shortcoming in this technology: 1. absorbent charcoal material belongs to consumptive material, after repeated use, absorption property reduces gradually, and need periodic replacement, its replacement cost is high; 2. active carbon is after absorption is saturated, needs to carry out desorption, can produce water pollutions in the process of desorption process.
Summary of the invention
For solving the problem, the invention provides a kind of can reduce consumptive material use, reduce pollute and can elevator system efficiency can the drying system of high efficiente callback organic exhaust gas.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of can the drying system of high efficiente callback organic exhaust gas, comprise drying plant and form the molecular sieve runner of closed circuit with drying plant, the inlet side of molecular sieve runner is provided with the first temperature reducing unit heat exchanger, the outlet side of molecular sieve runner is provided with the second intensification unit heat exchanger, the adsorption zone that molecular sieve runner is provided with desorption district and is connected with the second intensification unit heat exchanger with the first temperature reducing unit heat exchanger, is connected with desorption district and is provided with organic solvent reclaim line.
Be further used as the improvement of technical solution of the present invention, organic solvent reclaim line comprises and is connected to desorption district and the composition first intensification unit heat exchanger in loop and condensation liquefaction retracting device.
Be further used as the improvement of technical solution of the present invention, the side of giving vent to anger of the first intensification unit heat exchanger is provided with gas shield device.
Be further used as the improvement of technical solution of the present invention, the bottom of condensation liquefaction retracting device is provided with leakage fluid dram.
Be further used as the improvement of technical solution of the present invention, molecular sieve runner is also provided with cooling zone.
Be further used as the improvement of technical solution of the present invention, adsorption zone and cooling zone are connected with the second temperature reducing unit heat exchanger.
Be further used as the improvement of technical solution of the present invention, between cooling zone and the second intensification unit heat exchanger, be provided with connecting pipe.
Beneficial effect of the present invention: drying plant and molecular sieve runner the drying system of high efficiente callback organic exhaust gas can be formed loop by this, the absorption that adsorption zone carries out organic solvent is entered by after the organic exhaust gas cooling in drying plant, and drying plant recycling will be entered after clean atmosphere temperature rising, simultaneously, by the organic solvent recovery channel be connected with desorption district, the heat that organic solvent and it distribute is reclaimed, this system is without the need to using absorption consumptive material, consumptive material can be reduced use, organic exhaust gas recycle the pollution that also can reduce air, improve system effectiveness.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention integral tube line structure schematic diagram.
Detailed description of the invention
With reference to Fig. 1, the present invention be a kind of can the drying system of high efficiente callback organic exhaust gas, comprise drying plant 5 and form the molecular sieve runner 8 of closed circuit with drying plant 5, the inlet side of molecular sieve runner 8 is provided with the first temperature reducing unit heat exchanger 4, the outlet side of molecular sieve runner 8 is provided with the second intensification unit heat exchanger 6, the adsorption zone 82 that molecular sieve runner 8 is provided with desorption district 83 and is connected with the second intensification unit heat exchanger 6 with the first temperature reducing unit heat exchanger 4, is connected with desorption district 83 and is provided with organic solvent reclaim line.
The organic exhaust gas that drying plant 5 discharges enters into the first temperature reducing unit heat exchanger 4 by air channel and carries out cooling process, the adsorption zone 82 that organic exhaust gas after cooling enters into molecular sieve runner 8 from molecular sieve runner 8 inlet side carries out adsorption treatment, in waste gas, organic solvent is by molecular sieve adsorption, Cryogenic air in waste gas is after adsorption zone 82, enter into after the second intensification unit heat exchanger 6 carries out hyperthermic treatment by molecular sieve runner 8 outlet side, then be transmitted back to drying plant 5 for drying by air channel.Here enter after the organic exhaust gas cooling in drying plant 5 absorption that adsorption zone 82 carries out organic solvent, and recycle entering drying plant 5 after clean atmosphere temperature rising, so not only without the need to using absorption consumptive material, reduce consumptive material to use, and recycling of organic exhaust gas also can reduce pollution, improve system effectiveness.
As the preferred embodiment of the present invention, organic solvent reclaim line comprises and is connected to desorption district 83 and the composition first intensification unit heat exchanger 1 in loop and condensation liquefaction retracting device 3.
As the preferred embodiment of the present invention, the bottom of condensation liquefaction retracting device 3 is provided with leakage fluid dram 31.
The molecular sieve runner 8 being adsorbed with organic solvent liquid goes to desorption district 83, thermal desorption district 83 is added from the high temperature cleaned air of organic solvent reclaim line import, the organic solvent liquid of isolated molecule sieve absorption, make it become organic vapor, then organic vapor is entered into condensation liquefaction retracting device 3 carried out condensation liquefaction recovery by the outlet of organic solvent reclaim line again.Now, the organic solvent in organic vapor is condensed into liquid, by leakage fluid dram 31, organic solvent is discharged to the recovery that condensation accumulator tank carries out organic solvent.The Cryogenic air eliminating majority of organic solvent composition absorbs condensation and reclaims the heat discharged, temperature raises, the air of high temperature enters into the first intensification unit heat exchanger 1 by air channel and heats, high temperature air after heating is transmitted back to desorption district 83 by the import of organic solvent reclaim line again, for desorption organic solvent provides heat.
Here effectively reclaimed by condensation liquefaction retracting device 3 pairs of organic solvents, avoid organic solvent and discharge the pollution caused, and by organic solvent reclaim line, effective recovery has also been carried out to the heat that organic solvent distributes, there is provided heat for molecular sieve carries out desorption, improve the efficiency of system.
As the preferred embodiment of the present invention, the side of giving vent to anger of the first intensification unit heat exchanger 1 is provided with gas shield device 2.
In the process of carrying out organic solvent recovery; the concentration of organic vapor is easy to higher; there is the danger of blasting; in order to avoid this is dangerous; in this organic solvent recovery channel, accessed gas shield device 2, what fill in gas shield device 2 is the gas do not reacted with organic solvent under normal conditions with nitrogen, carbon dioxide, inert gas etc.The concentration of organic vapor can be effectively reduced, reduce the possibility of blast.
As the preferred embodiment of the present invention, molecular sieve runner 8 is also provided with cooling zone 81.
As the preferred embodiment of the present invention, adsorption zone 82 and cooling zone 81 are connected with the second temperature reducing unit heat exchanger 7.
As the preferred embodiment of the present invention, between cooling zone 81 and the second intensification unit heat exchanger 6, be provided with connecting pipe.
Cryogenic air in waste gas is after adsorption zone 82, flow out from the outlet of adsorption zone 82, then two-way can be divided to flow, one tunnel is delivered directly in the second intensification unit heat exchanger 6, separately lead up to air channel be delivered to the second temperature reducing unit heat exchanger 7 carry out cooling process, then 81 pairs, the cooling zone molecular sieve runner 8 entered in molecular sieve runner 8 from cooling import cools, then Cryogenic air again from the outlet of cooling zone 81 flow into the second intensification unit heat exchanger 6 with one gas bout front, Cryogenic air after bout is after the second intensification unit heat exchanger 6 carries out hyperthermic treatment, be transmitted back to drying plant for drying by air channel again.
Add cooling circuit in native system to be used for cooling molecular sieve, ensure that and the adsorption capacity that molecular sieve is good ensure that the ability of system, also extend the service life of molecular sieve simultaneously, decrease replacement cost.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (7)
1. one kind can the drying system of high efficiente callback organic exhaust gas, it is characterized in that: comprise drying plant (5) and form the molecular sieve runner (8) of closed circuit with described drying plant (5), the inlet side of described molecular sieve runner (8) is provided with the first temperature reducing unit heat exchanger (4), the outlet side of described molecular sieve runner (8) is provided with the second intensification unit heat exchanger (6), the adsorption zone (82) that described molecular sieve runner (8) is provided with desorption district (83) and is connected with the second intensification unit heat exchanger (6) with the first temperature reducing unit heat exchanger (4), be connected with described desorption district (83) and be provided with organic solvent reclaim line.
2. according to claim 1 can the drying system of high efficiente callback organic exhaust gas, it is characterized in that: described organic solvent reclaim line comprises and is connected to desorption district (83) and the first intensification unit heat exchanger (1) in composition loop and condensation liquefaction retracting device (3).
3. according to claim 2 can the drying system of high efficiente callback organic exhaust gas, it is characterized in that: the side of giving vent to anger of described first intensification unit heat exchanger (1) is provided with gas shield device (2).
4. according to Claims 2 or 3 can the drying system of high efficiente callback organic exhaust gas, it is characterized in that: the bottom of described condensation liquefaction retracting device (3) is provided with leakage fluid dram (31).
5. according to claim 1 can the drying system of high efficiente callback organic exhaust gas, it is characterized in that: described molecular sieve runner (8) is also provided with cooling zone (81).
6. according to claim 5 can the drying system of high efficiente callback organic exhaust gas, it is characterized in that: described adsorption zone (82) and cooling zone (81) are connected with the second temperature reducing unit heat exchanger (7).
7. according to claim 5 can the drying system of high efficiente callback organic exhaust gas, it is characterized in that: between described cooling zone (81) and the second intensification unit heat exchanger (6), be provided with connecting pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310314070.XA CN103398571B (en) | 2013-07-24 | 2013-07-24 | Drying system capable of efficiently recycling organic waste gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310314070.XA CN103398571B (en) | 2013-07-24 | 2013-07-24 | Drying system capable of efficiently recycling organic waste gas |
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| CN103398571A CN103398571A (en) | 2013-11-20 |
| CN103398571B true CN103398571B (en) | 2015-03-11 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084357B (en) * | 2014-07-14 | 2016-04-27 | 马军 | Heat pump and molecular sieve adsorption runner combined cycle organic solvent recovery device |
| CN107185359A (en) * | 2016-03-15 | 2017-09-22 | 航天特种材料及工艺技术研究所 | A kind of solvent recovery unit and recovery method |
| CN106379044B (en) * | 2016-09-09 | 2018-09-25 | 广东芬尼克兹环保科技有限公司 | A kind of organic waste gas purifying treatment system and control method |
| KR101927699B1 (en) * | 2016-10-31 | 2018-12-13 | 세메스 주식회사 | Apparatus and method for treating substrate |
| CN107419543A (en) * | 2017-08-02 | 2017-12-01 | 三明建华纺织有限公司 | A kind of artificial leather spray drying equipment |
| CN111023713B (en) * | 2019-03-11 | 2021-06-22 | 北京诺维新材科技有限公司 | Solid drying method and system |
| CN113218152A (en) * | 2021-05-07 | 2021-08-06 | 四川洁能干燥设备有限责任公司 | Heat pump system utilizing latent heat of humidity removal and high-efficiency energy-saving drying method |
| CN113028757A (en) * | 2021-05-11 | 2021-06-25 | 郑州义兴彩印有限公司 | Energy-concerving and environment-protective type water-based ink printing high-efficient drying system |
| CN113028756A (en) * | 2021-05-11 | 2021-06-25 | 郑州义兴彩印有限公司 | Energy-concerving and environment-protective type water-based ink printing drying system |
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| US7326277B1 (en) * | 2004-04-14 | 2008-02-05 | Uop Llc | Brake air drying using low pressure desiccant wheel |
| CN101146592A (en) * | 2005-03-24 | 2008-03-19 | 恩必安有限公司 | The system of treating odor and hazardrous gas with rotary regenerative heat exchanger and its apparatus |
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