CN207755797U - Acyl chlorides rectification under vacuum waste water reclaiming device - Google Patents
Acyl chlorides rectification under vacuum waste water reclaiming device Download PDFInfo
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- CN207755797U CN207755797U CN201721641540.3U CN201721641540U CN207755797U CN 207755797 U CN207755797 U CN 207755797U CN 201721641540 U CN201721641540 U CN 201721641540U CN 207755797 U CN207755797 U CN 207755797U
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- water
- lye
- acyl chlorides
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Abstract
The utility model is related to a kind of acyl chlorides rectification under vacuum waste water reclaiming devices, belong to technical field of wastewater recovery.The device includes rectifier unit and vacuum pump set, and vacuum buffer tank is connected between rectifier unit and vacuum pump set；Vacuum pump set includes lobe pump, water jet device and lye injection apparatus.It is further added by a water jet device in traditional acyl chlorides vacuum pump set, solves the problems, such as that thionyl chloride enters unit and salt is blended with lye generation sodium chloride and sodium sulfite well, avoids the generation of high-salt wastewater, while reducing cost.
Description
Technical field
The utility model is related to a kind of acyl chlorides rectification under vacuum waste water reclaiming devices, belong to technical field of wastewater recovery.
Background technology
Acyl chlorides is a kind of compound containing-C (O) Cl functional groups, belongs to one kind of carboxylic acid halides, has corrosivity, is carboxylic acid
In hydroxyl substituted by chlorine after the carboxylic acid derivates that are formed.Common acyl chlorides has：Between/paraphthaloyl chloride, p-nitrophenyl formyl
Chlorine, chloracetyl chloride.
It is when manufacturing enterprise of China mainly uses thionyl chloride method or phosgenation, wherein thionyl chloride method production acyl chlorides at present
Ensure that the conversion ratio of raw material acid, reaction process thionyl chloride put into be excessive, therefore the crude acid chloride after reaction still contains centainly
Measure thionyl chloride.Acyl chlorides refining step needs carry out under high vacuum operating mode, generally form vacuum using lobe pump and jet pump
Unit provides the high vacuum operating mode needed for acyl chlorides refining step, and jet pump circulation fluid is generally liquid caustic soda.Vacuum pump set is made
When industry, the thionyl chloride that contains eventually enters into lye jet pump and mixes shape with circulation fluid from the vacuum gas that distillation system is extracted out
At sodium chloride-containing, the solution of sodium sulfite, these high-salt wastewaters can not recycle, and can only be discharged into sewage disposal system and be steamed
The operations such as hair concentration, dry are detached, and the sodium chloride and sodium sulfite mixed salt isolated do solid waste processing, and increase is produced into
This.
Utility model content
In view of the deficiencies of the prior art, the purpose of this utility model is to provide a kind of acyl chlorides rectification under vacuum Sewage treatment dress
It sets, avoids the generation of high-salt wastewater.
A kind of acyl chlorides rectification under vacuum waste water reclaiming device described in the utility model, including be sequentially connected rectifier unit,
Vacuum buffer tank and vacuum pump set；
The vacuum pump set includes lobe pump, water jet device and lye injection apparatus, and Roots's pump steam inlet is slow with vacuum
Tank connection is rushed, lobe pump gas outlet is connected to water jet device and lye injection apparatus successively；
The water jet device includes water ejector, water-circulating pump and water circulating tank；Water recycles pot bottom connection water cycle
Pump, connection water-circulating pump connect water ejector；Water ejector connects at the top of water circulating tank；
The lye injection apparatus includes lye injector, lye tank and NaOH solution circulating pump, and lye tank liquid outlet is connected to alkali
Liquid circulating pump, NaOH solution circulating pump are connected with lye injector, are connected at the top of lye injector and lye tank；
The lobe pump gas outlet is connected with water ejector, is connected to lye injector at the top of water circulating tank.
Acyl chlorides rectifier unit includes acyl chlorides rectifying column, condenser and gas-liquid separator, at the top of acyl chlorides rectifying column and condenser
Top is connected, and is connected at the top of condenser bottom and gas-liquid separator, is connected at the top of condenser bottom and gas-liquid separator, gas-liquid point
It is connected with vacuum buffer tank top from device.
Preferably, lobe pump is cascaded for 2.
Vacuum buffer tank is with cooling chuck.
In actual production, rectifying one batch acyl chlorides about used time 30h, generation high-salt wastewater amount is 3t, and often covering rectifier unit can
Emission reduction high-salt wastewater amount about 72t, high-salt wastewater processing cost are about 270 yuan/t, monthly save high-salt wastewater processing cost about
20000 yuan.Wherein about 3% or so mixed salt of high-salt wastewater content, DTRO films infiltration+multiple-effect evaporation wastewater treatment expense per ton is about
120 yuan, about 5000 yuan/t of mixed salt fixed-end forces expense.
Compared with prior art, the utility model has the following advantages：
It is further added by a water jet device in traditional acyl chlorides vacuum pump set, solves thionyl chloride well and enters unit
Sodium chloride is led to the problem of with lye and salt is blended in sodium sulfite, avoids the generation of high-salt wastewater, while reducing cost, letter
Easy row.
Description of the drawings
Fig. 1 is the acyl chlorides rectification under vacuum waste water reclaiming device schematic diagram of the utility model.
In figure：1, acyl chlorides rectifying column；2, condenser；3, gas-liquid separator；4, vacuum buffer tank；5, lobe pump；6, water sprays
Emitter；7, water-circulating pump；8, water circulating tank；9, lye injector；10, lye tank；11, NaOH solution circulating pump.
Specific implementation mode
The utility model is described further with reference to embodiment.
Embodiment 1
A kind of acyl chlorides rectification under vacuum waste water reclaiming device of the present embodiment, refer to the attached drawing 1, including the rectifying being sequentially connected fill
It sets, vacuum buffer tank 4 and vacuum pump set；The vacuum pump set includes lobe pump 5, water jet device and lye injection apparatus, sieve
Thatch pumps 5 air inlets and is connected to vacuum buffer tank 4, and 5 gas outlet of lobe pump is connected to water jet device and lye injection apparatus successively；
The water jet device includes water ejector 6, water-circulating pump 7 and water circulating tank 8；8 bottom of water circulating tank is connected to water-circulating pump 7,
Water-circulating pump 7 connects water ejector 6, and water ejector 6 connects 8 top of water circulating tank；The lye injection apparatus includes lye spray
Emitter 9, lye tank 10 and NaOH solution circulating pump 11；Lye injector 9 is connected with 10 top of lye tank, the connection of 10 liquid outlet of lye tank
NaOH solution circulating pump 11, NaOH solution circulating pump 11 are connected with lye injector 9；5 gas outlet of the lobe pump is connected with water ejector 6,
8 top of water circulating tank is connected to lye injector 9；Acyl chlorides rectifier unit includes acyl chlorides rectifying column 1, condenser 2 and gas-liquid separation
Device 3,1 top of acyl chlorides rectifying column are connected with 2 top of condenser, and 2 bottom of condenser is connected to 3 top of gas-liquid separator, condenser 2
Bottom is connected to 3 top of gas-liquid separator, and gas-liquid separator 3 is connected with 4 top of vacuum buffer tank.
The operating process of the utility model, includes the following steps：
1) enter in gas-liquid separator after the condensed device condensation of material in acyl chlorides rectifying column out and carry out gas-liquid separation,
Liquid phase material enters in acyl chlorides rectifying column, and gaseous phase materials enter vacuum buffer tank cooling and remove acyl chlorides, obtain secondary gaseous phase materials；
2) secondary gaseous phase materials enter Roots's pump steam inlet, and the secondary gaseous phase materials being discharged from lobe pump gas outlet enter water
Water in water circulating tank is drawn through pipeline feed water ejector, the chlorine in secondary gaseous phase materials by injector, water-circulating pump
Change sulfoxide to mix with water in water ejector in generation hydrogen chloride and sulfur dioxide to water circulating tank, most of hydrogen chloride gas quilt
Water absorbs, and remaining gaseous phase materials enter in lye injector；
3) lye in lye tank is drawn through pipeline and gives lye injector, remaining gaseous phase materials by NaOH solution circulating pump
Into lye injector, mixed with lye to lye tank, sulfur dioxide is absorbed by lye.
Certainly, the above is only the preferred embodiment of the utility model, be should not be construed as limiting new to this practicality
The scope of embodiments of type.The utility model is also not limited to the example above, and those skilled in the art are in this reality
With all the changes and improvements etc. made in novel essential scope, the patent covering scope of the utility model should all be belonged to
It is interior.
Claims (4)
1. a kind of acyl chlorides rectification under vacuum waste water reclaiming device, it is characterised in that：
Including the rectifier unit, vacuum buffer tank (4) and vacuum pump set being sequentially connected；
The vacuum pump set includes lobe pump (5), water jet device and lye injection apparatus, lobe pump (5) air inlet and vacuum
Surge tank (4) is connected to, and lobe pump (5) gas outlet is connected to water jet device and lye injection apparatus successively；
The water jet device includes water ejector (6), water-circulating pump (7) and water circulating tank (8)；Water circulating tank (8) bottom connects
Water flowing circulating pump (7), water-circulating pump (7) connect water ejector (6)；Water ejector (6) connects at the top of water circulating tank (8)；
The lye injection apparatus includes lye injector (9), lye tank (10) and NaOH solution circulating pump (11)；Lye tank (10) goes out
Liquid mouth is connected to NaOH solution circulating pump (11), and NaOH solution circulating pump (11) is connected with lye injector (9), lye injector (9) and lye
It is connected at the top of case (10)；
Lobe pump (5) gas outlet is connected with water ejector (6), is connected to lye injector (9) at the top of water circulating tank (8).
2. acyl chlorides rectification under vacuum waste water reclaiming device according to claim 1, it is characterised in that：Acyl chlorides rectifier unit includes
Acyl chlorides rectifying column (1), condenser (2) and gas-liquid separator (3), acyl chlorides rectifying column (1) top and condenser (2) top are connected,
It is connected to, is connected at the top of condenser (2) bottom and gas-liquid separator (3), gas at the top of condenser (2) bottom and gas-liquid separator (3)
It is connected at the top of liquid/gas separator (3) and vacuum buffer tank (4).
3. acyl chlorides rectification under vacuum waste water reclaiming device according to claim 1, it is characterised in that：Lobe pump (5) is 2 strings
It is linked togather.
4. acyl chlorides rectification under vacuum waste water reclaiming device according to claim 1, it is characterised in that：Vacuum buffer tank (4) band
There is cooling chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721641540.3U CN207755797U (en) | 2017-11-30 | 2017-11-30 | Acyl chlorides rectification under vacuum waste water reclaiming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721641540.3U CN207755797U (en) | 2017-11-30 | 2017-11-30 | Acyl chlorides rectification under vacuum waste water reclaiming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207755797U true CN207755797U (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721641540.3U Active CN207755797U (en) | 2017-11-30 | 2017-11-30 | Acyl chlorides rectification under vacuum waste water reclaiming device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963910A (en) * | 2019-12-17 | 2020-04-07 | 南通市天时化工有限公司 | Method for vacuum system in process of preparing acyl chloride by benzal chloride acidolysis method |
-
2017
- 2017-11-30 CN CN201721641540.3U patent/CN207755797U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963910A (en) * | 2019-12-17 | 2020-04-07 | 南通市天时化工有限公司 | Method for vacuum system in process of preparing acyl chloride by benzal chloride acidolysis method |
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