CN103432767A - Recovery device of extraction solvent MIBK (Methyl Iso Butyl Ketone) flash evaporation - Google Patents
Recovery device of extraction solvent MIBK (Methyl Iso Butyl Ketone) flash evaporation Download PDFInfo
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- CN103432767A CN103432767A CN2013103836843A CN201310383684A CN103432767A CN 103432767 A CN103432767 A CN 103432767A CN 2013103836843 A CN2013103836843 A CN 2013103836843A CN 201310383684 A CN201310383684 A CN 201310383684A CN 103432767 A CN103432767 A CN 103432767A
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- tail gas
- solvent
- condenser
- mibk
- vacuum unit
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Abstract
The invention discloses a recovery device of extraction solvent MIBK (Methyl Iso Butyl Ketone) flash evaporation. Particularly, the recovery device comprises a tail gas buffer tank, a vacuum unit, a solvent receiver and two groups of condensers, wherein a tail gas inlet and an additionally connected first condenser are arranged at the top of the tail gas buffer tank, the first condenser is connected with the vacuum unit through a vacuum pipe, the vacuum unit is connected with the solvent receiver through the vacuum pipe, the top of the solvent receiver is connected with a second condenser, and a saline low-temperature condensation coil is arranged in the solvent receiver. By adopting the tail recovery processing device disclosed by the invention, tail gas is deeply condensed by adopting the two groups of condensers and the saline low-temperature condensation coil, and the deeply condensed tail gas does not basically contain MIBK, therefore the tail gas reaches the emission standard, the utilization of a solvent is effectively increased, the cost is saved, and the pollution of tail gas to air is eliminated.
Description
Technical field
The present invention relates to a kind of tail gas recycling and treating device, relate in particular to the tail gas recycling and treating device for the MIBK flash distillation, mainly belong to the technical field of chemical industry equipment.
Background technology
The low boiling point organic solvents such as MIBK can produce tail gas when flash distillation, and the generation of tail gas has increased the loss of organic solvent, air is polluted simultaneously.
In prior art, the tail gas that usually adopts condenser to produce when the flash distillation low boiling point organic solvents such as MIBK carries out the condensation recovery, but only adopt condenser limited to the condensation of tail gas, still higher containing organic quantity of solvent in the tail gas of discharging after condensation, the loss of organic solvent is still larger, and tail gas still causes larger pollution to air.
Summary of the invention
The object of the invention is to propose a kind of device for recovering tail gas for the MIBK flash distillation.
Purpose of the present invention will be achieved by the following technical programs: the retracting device of extractant MIBK flash distillation, it is characterized in that: described retracting device comprises tail gas dashpot, vacuum unit, solvent receiver and two groups of condensers, described tail gas dashpot top is provided with gas inlet and connects in addition the first condenser of establishing, described the first condenser connects the vacuum unit by vacuum tube, described vacuum unit connects the solvent receiver by vacuum tube, described solvent receiver top connects the second condenser, is provided with salt solution cryogenic condensation coil pipe in described solvent receiver.
Further, described vacuum unit is vavuum pump.
Apply tail gas recycling and treating device of the present invention, adopt two groups of condensers and salt solution cryogenic condensation coil pipe to carry out deep condensation to tail gas, tail gas after deep condensation is not substantially containing MIBK, thereby make tail gas reach discharge standard, effectively raise the utilization rate of solvent, save cost, eliminated the pollution of tail gas to air.
The accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is applied to the tail gas recycling and treating device of MIBK flash distillation.
The specific embodiment
Following constipation closes the embodiment accompanying drawing, the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is easier to understand, grasp.
As shown in Figure 1, the retracting device of extractant MIBK flash distillation, especially, this retracting device comprises tail gas dashpot 1, vacuum unit 2, solvent receiver 3 and two groups of condensers.Wherein this tail gas dashpot 1 top is provided with gas inlet 4 and connects in addition the first condenser 5 of establishing, this first condenser 5 connects vacuum unit 2 by vacuum tube, vacuum unit 2 connects solvent receiver 3 by vacuum tube, these solvent receiver 3 tops connect the second condenser 6, and are provided with salt solution cryogenic condensation coil pipe 7 in solvent receiver 3.Wherein the vacuum unit is preferably vavuum pump, can be also the equipment of other tool vacuum capability.
During concrete enforcement, in Fig. 1, the arrow of each pipeline is the exhaust gas flow direction, when extractant MIBK flash distillation, at first tail gas pass through the tail gas dashpot, tail gas is accepted the first condenser deep condensation, the now contained extractant MIBK major part recovery that is condensed in tail gas, tail gas containing fraction extractant MIBK is evacuated to the solvent receiver by the vacuum unit, double-depth condensation at the coil condensation effect of salt solution cryogenic condensation and the second condenser, extractant MIBK in tail gas is efficiently liquefied, thereby make the atomic discharge standard that reaches of extractant MIBK content in tail gas, reduced the loss of solvent.
Tail gas recycling and treating device of the present invention not only can be applied to the vent gas treatment of MIBK flash distillation, can be applicable to equally the vent gas treatment of low boiling point organic solvent flash distillation.
By above-mentioned character express, can find out, the beneficial effect of the present invention's application: adopt two groups of condensers and salt solution cryogenic condensation coil pipe to carry out deep condensation to tail gas, tail gas after deep condensation is not substantially containing extractant MIBK, thereby make tail gas reach discharge standard, effectively improved the utilization rate of solvent, save cost, eliminated the pollution of tail gas to air.
In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, within all dropping on the present invention's scope required for protection.
Claims (2)
1. the retracting device of extractant MIBK flash distillation, it is characterized in that: described retracting device comprises tail gas dashpot, vacuum unit, solvent receiver and two groups of condensers, described tail gas dashpot top is provided with gas inlet and connects in addition the first condenser of establishing, described the first condenser connects the vacuum unit by vacuum tube, described vacuum unit connects the solvent receiver by vacuum tube, described solvent receiver top connects the second condenser, is provided with salt solution cryogenic condensation coil pipe in described solvent receiver.
2. the retracting device of extractant MIBK flash distillation according to claim 1, it is characterized in that: described vacuum unit is vavuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103836843A CN103432767A (en) | 2013-08-29 | 2013-08-29 | Recovery device of extraction solvent MIBK (Methyl Iso Butyl Ketone) flash evaporation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103836843A CN103432767A (en) | 2013-08-29 | 2013-08-29 | Recovery device of extraction solvent MIBK (Methyl Iso Butyl Ketone) flash evaporation |
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| CN103432767A true CN103432767A (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103836843A Pending CN103432767A (en) | 2013-08-29 | 2013-08-29 | Recovery device of extraction solvent MIBK (Methyl Iso Butyl Ketone) flash evaporation |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3589104A (en) * | 1969-06-26 | 1971-06-29 | Dow Chemical Co | Recovery of chemicals from off-gases |
| JPS51122009A (en) * | 1975-04-14 | 1976-10-25 | Mitsubishi Heavy Ind Ltd | Process for recovery of high purity ketone solvents from off-gas |
| CN101496981A (en) * | 2009-01-20 | 2009-08-05 | 郝璐 | Method for purifying methyl isobutyl ketone exhaust gas in vacuum system using waste compressor oil |
| CN202715265U (en) * | 2012-06-26 | 2013-02-06 | 湖北保乐制药有限公司 | Organic solvent and exhaust gas recovery system |
| CN203123770U (en) * | 2013-03-19 | 2013-08-14 | 无锡蓝海工程设计有限公司 | Discharge system capable of reducing organic tail gas during production of basic epoxy resin |
| CN203458830U (en) * | 2013-08-29 | 2014-03-05 | 张家港市三联化工科技有限公司 | Extraction solvent MIBK (methyl isobutyl ketone) flashing recovery device |
-
2013
- 2013-08-29 CN CN2013103836843A patent/CN103432767A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3589104A (en) * | 1969-06-26 | 1971-06-29 | Dow Chemical Co | Recovery of chemicals from off-gases |
| JPS51122009A (en) * | 1975-04-14 | 1976-10-25 | Mitsubishi Heavy Ind Ltd | Process for recovery of high purity ketone solvents from off-gas |
| CN101496981A (en) * | 2009-01-20 | 2009-08-05 | 郝璐 | Method for purifying methyl isobutyl ketone exhaust gas in vacuum system using waste compressor oil |
| CN202715265U (en) * | 2012-06-26 | 2013-02-06 | 湖北保乐制药有限公司 | Organic solvent and exhaust gas recovery system |
| CN203123770U (en) * | 2013-03-19 | 2013-08-14 | 无锡蓝海工程设计有限公司 | Discharge system capable of reducing organic tail gas during production of basic epoxy resin |
| CN203458830U (en) * | 2013-08-29 | 2014-03-05 | 张家港市三联化工科技有限公司 | Extraction solvent MIBK (methyl isobutyl ketone) flashing recovery device |
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Application publication date: 20131211 |