CN205635424U - Cyanoacetic acid ester is esterified gaseous absorption and is recycled device - Google Patents
Cyanoacetic acid ester is esterified gaseous absorption and is recycled device Download PDFInfo
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- CN205635424U CN205635424U CN201620477617.7U CN201620477617U CN205635424U CN 205635424 U CN205635424 U CN 205635424U CN 201620477617 U CN201620477617 U CN 201620477617U CN 205635424 U CN205635424 U CN 205635424U
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Abstract
The utility model discloses a cyanoacetic acid ester is esterified gaseous absorption and is recycled device belongs to gas recovery and recycles equipment technical field, including condensate recovery system, still include heat exchanger, the absorption tower of distillation column and fountain, condensate recovery system includes the absorbent condenser, mellow wine condenser and pure collection tank, the absorption liquid export on absorption tower and heat exchanger's absorption liquid import intercommunication, heat exchanger's the absorption liquid export and the absorption liquid import intercommunication of distillation column, the gas outlet of distillation column and the import intercommunication of pure condenser, the export of mellow wine condenser and the import intercommunication of pure collection tank, the absorbent export of distillation column and heat exchanger's absorbent import intercommunication, heat exchanger's the absorbent export and the import intercommunication of absorbent condenser, spray set's import communicates in the export of absorbent condenser and the absorption tower. The energy consumption has been practiced thrift to the heat and the cold volume of system that the pure rate of recovery can improve about 20%, make full use of, can realize the serialization operation, economical and practical.
Description
Technical field
This utility model belongs to gas recycling equipment technical field, relates to a kind of cyanoacetate
Esterification GAS ABSORPTION reuse means.
Background technology
Can produce containing alcohol gas in cyanoacetate esterification production process, its main component is corresponding alcohol,
Owing to alcohols gas belongs to volatile organic gas, atmospheric environment can be caused the biggest harm, and alcohol
It is the important source material for esterification, has the highest economic worth.For cyanoacetate esterification process
The recycling and processing device of the containing alcohol gas of middle generation, use condenses recovery more, there is problems of reclaiming
Rate is low, and the alcohol condensed out need nonetheless remain for separating-purifying and could use, and so will necessarily some
Organic gas evaporates, and has both wasted raw material, again atmospheric environment has been caused pollution.
Summary of the invention
This utility model, in order to overcome the defect of prior art, devises a kind of cyanoacetate esterification gas
Absorbing reuse means, the response rate is high, carry out the gas that cyanoacetate esterification process produces absorbing and
Separation and recovery, takes full advantage of heat and the cold of system, it is achieved serialization runs, and gas is through being somebody's turn to do
After device processes, volatile organic content reduces, can be with qualified discharge.
The concrete technical scheme that this utility model is taked is: a kind of cyanoacetate esterification GAS ABSORPTION is again
Utilize device, including condensate recovery system, it is important to: described device also includes heat exchanger, steaming
Evaporate the absorption tower of tower and fountain, the sidewall on absorption tower is provided with gas feed, the top in absorption tower
Portion is provided with spray equipment, and condensate recovery system includes that absorbent condenser, alcohol condenser and alcohol are collected
Tank, the absorbing liquid outlet on absorption tower and the absorbing liquid inlet communication of heat exchanger, the absorption of heat exchanger
Liquid outlet and the absorbing liquid inlet communication of distillation column, the gas outlet of distillation column connects with the import of alcohol condenser
Logical, the outlet of alcohol condenser and the inlet communication of alcohol collecting tank, the absorbent outlet of distillation column is handed over heat
The absorbent inlet communication of parallel operation, the absorbent outlet of heat exchanger is with the import of absorbent condenser even
Logical, the outlet of absorbent condenser and the inlet communication of spray equipment in absorption tower.
Heater is set up, the import of heater and the suction of heat exchanger between heat exchanger and distillation column
Receive the absorbing liquid import of liquid outlet, the outlet of heater and distillation column.
Reboiler is set up, the import of reboiler and the absorption of distillation column between distillation column and heat exchanger
The absorbent inlet communication of agent outlet, the outlet of reboiler and heat exchanger.
Set up the absorbing liquid outlet on the first delivery pump, the import of the first delivery pump and absorption tower, the
The absorbing liquid inlet communication of one conveying delivery side of pump and heat exchanger, the first conveying delivery side of pump also with suction
Receive the inlet communication of agent condenser.
Set up the second delivery pump, the import of the second delivery pump and the outlet of reboiler, the second conveying
Delivery side of pump and the absorbent inlet communication of heat exchanger.
The bottom of described alcohol collecting tank is provided with liquid outlet, sets up the 3rd delivery pump, the 3rd delivery pump
Import connect with the liquid outlet of alcohol collecting tank.
The beneficial effects of the utility model are: use spray-absorption and the one makeup of absorbing liquid separated
Putting, replace traditional condensate recycling device, the response rate of alcohol can improve about 20%, by cyanoacetate
The gas produced in esterification process carries out absorbing and separating and recovering, and takes full advantage of the heat of system and cold
Amount, has saved energy consumption, can realize serialization and run, economical and practical.Gas is after this device processes
Volatile organic matter VOC content reduces, can be with qualified discharge.Process conditions are gentle, without High Temperature High Pressure
Operation, device is simple, it is easy to accomplish, and there is good security performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In accompanying drawing, 1 represents absorption tower, and 2 represent heat exchanger, and 3 represent heater, and 4 represent distillation
Tower, 5 represent alcohol condenser, and 6 represent collecting tank, and 7 represent absorbent condenser, and 8 represent reboiler,
9 represent the first delivery pump, and 10 represent the second delivery pump, and 11 represent the 3rd delivery pump.
Detailed description of the invention
With specific embodiment, this utility model is elaborated below in conjunction with the accompanying drawings:
Specific embodiment, as it is shown in figure 1, a kind of cyanoacetate esterification GAS ABSORPTION reuse means,
Including condensate recovery system, also include the absorption tower 1 of heat exchanger 2, distillation column 4 and fountain, inhale
Receiving and be provided with gas feed on the sidewall of tower 1, the top in absorption tower 1 is provided with spray equipment, cold
Condensation reclaiming system includes absorbent condenser 7, alcohol condenser 5 and alcohol collecting tank 6, the suction on absorption tower 1
Receiving the absorbing liquid inlet communication of liquid outlet and heat exchanger 2, the absorbing liquid of heat exchanger 2 exports and steams
Evaporate the inlet communication of the absorbing liquid inlet communication of tower 4, the gas outlet of distillation column 4 and alcohol condenser 5,
The outlet of alcohol condenser 5 and the inlet communication of alcohol collecting tank 6, absorbent outlet and the heat of distillation column 4
The absorbent inlet communication of exchanger 2, absorbent outlet and the absorbent condenser 7 of heat exchanger 2
Inlet communication, the inlet communication of spray equipment in the outlet of absorbent condenser 7 and absorption tower 1.
The response rate of alcohol can improve about 20%, takes full advantage of heat and the cold of system, saves
Energy consumption, can realize serialization and run, economical and practical.Gas volatility after this device processes is organic
Thing VOC content reduces, can be with qualified discharge.Process conditions are gentle, operate without High Temperature High Pressure, device
Simply, it is easy to accomplish, and there is good security performance.
As to further improvement of the utility model, set up between heat exchanger 2 and distillation column 4
The absorbing liquid outlet of heater 3, the import of heater 3 and heat exchanger 2, going out of heater 3
Mouthful with the absorbing liquid import of distillation column 4.Heater 3 is utilized absorbing liquid to be carried out heat temperature raising, then
Absorbing liquid after will heat up again is sent in distillation column 4, so can shorten absorbing liquid in distillation column 4
Heat time heating time, improve work efficiency, it is achieved continuous prodution.
As to further improvement of the utility model, set up between distillation column 4 and heat exchanger 2
The absorbent outlet of reboiler 8, the import of reboiler 8 and distillation column 4, the outlet of reboiler 8
Absorbent inlet communication with heat exchanger 2.Utilize the reboiler 8 absorption to obtaining after alcohol-water separation
Agent is heated so that it is heat up vaporization, carries out heat friendship with absorbing liquid in being then fed to heat exchanger 2
Change, make absorbing liquid heat up, can be so that absorbing liquid provides sufficient heat, it is achieved continuous prodution.
As to further improvement of the utility model, set up the first delivery pump 9, the first delivery pump 9
The absorbing liquid outlet on import and absorption tower 1, the outlet of the first delivery pump 9 and heat exchanger 2
Absorbing liquid inlet communication, the outlet of the first delivery pump 9 also with the inlet communication of absorbent condenser 7,
The purpose of Automatic Conveying absorbing liquid can be realized, can accurately control conveying capacity simultaneously, time saving and energy saving,
Improve production efficiency.
Set up the second delivery pump 10, the import of the second delivery pump 10 and the outlet of reboiler 8, the
The outlet of two delivery pumps 10 and the absorbent inlet communication of heat exchanger 2, it is possible to achieve Automatic Conveying
The purpose of absorbent, can accurately control conveying capacity simultaneously, time saving and energy saving, improves production efficiency.
The bottom of alcohol collecting tank 6 is provided with liquid outlet, sets up the 3rd delivery pump 11, the 3rd delivery pump 11
Import connect with the liquid outlet of alcohol collecting tank 6, it is possible to achieve the purpose of Automatic Conveying alcohol, simultaneously
Can accurately control conveying capacity, time saving and energy saving, improve production efficiency.
This utility model is in the specific implementation: first inject a certain amount of absorbent in absorption tower 1, uses
Water does absorbent, is then turned on the first delivery pump 9 bottom absorption tower 1, allows absorbent first pass through absorption
Agent condenser 7, sprays in the spray equipment subsequently into top, absorption tower 1, drives in self-loopa
Under the suction function produced, the gas that cyanoacetate esterification process produces enters absorption tower 1 by absorbent
Absorb, become absorbing liquid, when the content of alcohol reaches 10% in absorbing liquid, open absorption tower 1 and lead to
The pipeline of heat exchanger 2, simultaneously heater 3, distillation column 4, alcohol condenser 5, reboiler 8
With the second delivery pump 10, device brings into operation.
In esterification process produce esterification gas (main component is alcohol) through pipeline liquid injecting device by absorption tower 1
Gas feed in the middle part of sidewall carries out spray-absorption in entering absorption tower 1, the absorbing liquid obtained after absorption
Exported by the absorbing liquid bottom absorption tower 1 and flow out, be delivered to heat exchanger 2 end by the first delivery pump 9
In the absorbing liquid import in portion, exported by the absorbing liquid at heat exchanger 2 top after preheating and flow out, so
After by bottom heater 3 import enter heater 3 be internally heated intensification, then by heater 3
The outlet at top is flowed out, the absorbing liquid import in the middle part of distillation column 4 sidewall enter distillation column 4 internal,
Carrying out alcohol-water separation in distillation column 4 under filler effect, the gas of tower top is through distillation column 4 top
Gas outlet is flowed out and is entered in alcohol condenser 5 by the import at alcohol condenser 5 top, obtains after condensation
Alcohol, is flowed out by the outlet bottom alcohol condenser 5, is then entered alcohol by the import at alcohol collecting tank 6 top
Store as raw material in collecting tank 6, when needing to use, open the 3rd delivery pump 11；Steam
The absorbent obtained after carrying out alcohol-water separation in evaporating tower 4 is exported by the absorbent bottom distillation column 4 and flows out
And enter in reboiler 8, then under the effect of the second delivery pump 10, it is transported to heat exchanger 2
In the absorbent import of sidewall bottom, carry out heat exchange with the absorbing liquid after absorbing, tentatively lower the temperature, so
After by heat exchanger 2 sidewall upper absorbent export flow out, and by absorbent condenser 7 bottom
Import enters in absorbent condenser 7 lowers the temperature further, the water after cooling as absorbent by absorbent
The outlet at condenser 7 top is flowed out in the spray equipment being transported to absorption tower 1.So circulation, no
Only carry out absorbing and separating and recovering by the gas that esterification process produces, and take full advantage of the heat of system
Amount and cold, it is achieved serialization runs, gas is volatile organic content fall after this device processes
Low, can be with qualified discharge.
Four cyanoacetate production lines of Shijiazhuang City, Hebei Province cyanoacetate manufacturer try
Test, reclaim alcohol amount/(gas discharge flow rate * methanol content * 24 hours) * 100% the alcohol response rate=every day,
Specific experiment data are as follows,
Embodiment one,
A number production line, esterification containing alcohol gas rate of discharge be 22 sides/hour, wherein, VOC contains
Amount is 0.95kg/m3, methanol content is 0.86kg/m3, after this device recycles, discharge
In gas, the detection level of VOC is 95mg/m3, clearance is 99.99%, reclaims alcohol 442kg/ days,
The alcohol response rate is 97.3%.
Embodiment two,
No. two production lines, esterification containing alcohol gas rate of discharge be 20 sides/hour, wherein, VOC contains
Amount is 0.45kg/m3, methanol content is 0.41kg/m3, after this device recycles, discharge
In gas, the detection level of VOC is 50mg/m3, clearance is 99.99%, reclaims alcohol 190kg/ days,
The alcohol response rate is 96.5%.
Embodiment three,
No. three production lines, esterification containing alcohol gas rate of discharge be 25 sides/hour, wherein, VOC contains
Amount is 0.4kg/m3, methanol content is 0.36kg/m3, after this device recycles, the gas of discharge
In body, the detection level of VOC is 45mg/m3, clearance is 99.99%, reclaims alcohol 211kg/ days,
The alcohol response rate is 97.7%.
Embodiment four,
No. four production lines, esterification containing alcohol gas rate of discharge be 26 sides/hour, wherein, VOC contains
Amount is 0.72kg/m3, methanol content is 0.65kg/m3, after this device recycles, discharge
In gas, the detection level of VOC is 65mg/m3, clearance is 99.99%, reclaims alcohol 394kg/ days,
The alcohol response rate is 97.1%.
Claims (6)
1. a cyanoacetate esterification GAS ABSORPTION reuse means, including condensate recovery system, it is special
Levy and be: described device also includes heat exchanger (2), distillation column (4) and the absorption tower of fountain
(1), the sidewall of absorption tower (1) being provided with gas feed, the top in absorption tower (1) is arranged
Absorbent condenser (7), alcohol condenser (5) and alcohol are received to have spray equipment, condensate recovery system to include
Collection tank (6), the absorbing liquid outlet of absorption tower (1) and the absorbing liquid inlet communication of heat exchanger (2),
The absorbing liquid outlet of heat exchanger (2) and the absorbing liquid inlet communication of distillation column (4), distillation column (4)
The inlet communication of gas outlet and alcohol condenser (5), the outlet of alcohol condenser (5) and alcohol collecting tank
(6) inlet communication, the absorbent outlet of distillation column (4) is entered with the absorbent of heat exchanger (2)
Mouth connection, the absorbent outlet of heat exchanger (2) and the inlet communication of absorbent condenser (7),
The outlet of absorbent condenser (7) and the inlet communication of absorption tower (1) interior spray equipment.
A kind of cyanoacetate esterification GAS ABSORPTION reuse means the most according to claim 1, its
It is characterised by: between heat exchanger (2) and distillation column (4), set up heater (3), heater
(3) import and the absorbing liquid outlet of heat exchanger (2), the outlet of heater (3) and steaming
Evaporate the absorbing liquid import of tower (4).
A kind of cyanoacetate esterification GAS ABSORPTION reuse means the most according to claim 1, its
It is characterised by: between distillation column (4) and heat exchanger (2), set up reboiler (8), reboiler
(8) import and the absorbent outlet of distillation column (4), the outlet of reboiler (8) is handed over heat
The absorbent inlet communication of parallel operation (2).
A kind of cyanoacetate esterification GAS ABSORPTION reuse means the most according to claim 1, its
It is characterised by: set up the first delivery pump (9), the import of the first delivery pump (9) and absorption tower (1)
Absorbing liquid outlet, the absorbing liquid of the outlet of the first delivery pump (9) and heat exchanger (2) is entered
Mouthful connection, the outlet of the first delivery pump (9) also with the inlet communication of absorbent condenser (7).
A kind of cyanoacetate esterification GAS ABSORPTION reuse means the most according to claim 3, its
It is characterised by: set up the second delivery pump (10), the import of the second delivery pump (10) and reboiler (8)
Outlet, the absorbent inlet communication of the outlet of the second delivery pump (10) and heat exchanger (2).
A kind of cyanoacetate esterification GAS ABSORPTION reuse means the most according to claim 1, its
It is characterised by: the bottom of described alcohol collecting tank (6) is provided with liquid outlet, sets up the 3rd delivery pump (11),
The import of the 3rd delivery pump (11) connects with the liquid outlet of alcohol collecting tank (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620477617.7U CN205635424U (en) | 2016-05-23 | 2016-05-23 | Cyanoacetic acid ester is esterified gaseous absorption and is recycled device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620477617.7U CN205635424U (en) | 2016-05-23 | 2016-05-23 | Cyanoacetic acid ester is esterified gaseous absorption and is recycled device |
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| CN205635424U true CN205635424U (en) | 2016-10-12 |
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| CN201620477617.7U Active CN205635424U (en) | 2016-05-23 | 2016-05-23 | Cyanoacetic acid ester is esterified gaseous absorption and is recycled device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469552A (en) * | 2017-10-17 | 2017-12-15 | 王畅 | A kind of oxidable TREATMENT OF VOCs device and its application method |
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2016
- 2016-05-23 CN CN201620477617.7U patent/CN205635424U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469552A (en) * | 2017-10-17 | 2017-12-15 | 王畅 | A kind of oxidable TREATMENT OF VOCs device and its application method |
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