CN208430063U - A kind of neutralized system in n-butyl acrylate production - Google Patents
A kind of neutralized system in n-butyl acrylate production Download PDFInfo
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- CN208430063U CN208430063U CN201820637634.1U CN201820637634U CN208430063U CN 208430063 U CN208430063 U CN 208430063U CN 201820637634 U CN201820637634 U CN 201820637634U CN 208430063 U CN208430063 U CN 208430063U
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Abstract
The utility model discloses the neutralized system in a kind of production of n-butyl acrylate, and the neutralized system includes n-butyl acrylate transfer tank and water phase transfer tank after two-stage static mixer, neutralization reaction kettle, pH measurement device, coalescence phase-splitter, neutralization；The mixed once liquid outlet of the level-one static mixer is connect with second level static mixer, the secondary mixture export of the second level static mixer is connect with neutralization reaction kettle, gaseous phase outlet is equipped in neutralization reaction kettle, gaseous phase outlet is connect with vent trap, the gaseous phase outlet of vent trap is connect with tail gas absorption unit, pH measurement device is equipped at the liquid-phase outlet of the neutralization reaction kettle, the liquid-phase outlet is connect with second level static mixer and neutralization coalescence phase-splitter respectively by neutralizing circulating pump；Neutralization coalescence phase-splitter oil is mutually connect outlet with n-butyl acrylate transfer tank after neutralization, and the outlet of coalescence phase-splitter water phase is connect with water phase transfer tank, is neutralized coalescence phase-splitter gaseous phase outlet and is connect with tail gas absorption unit.
Description
Technical field
The utility model relates to acrylate waste oil reclaimer fields, and in particular in a kind of production of n-butyl acrylate
Neutralized system.
Background technique
N-butyl acrylate is after slightly steaming, and there is also the objects of the aobvious acidity such as acrylic acid, esterified acid catalyst in thick ester
Matter is needed by adding the method for alkali neutralization that the acidity in thick ester is made to reach requirement, otherwise can not be in subsequent processing units to third
Olefin(e) acid butyl ester middle acid substance is removed.
Currently, the acidic materials being used in neutralized crude esters are mainly neutralized by weight ester scrubbing tower, thick ester and scrubbing tower
The waste water of bottom cycle enters in scrubbing tower together, and sodium hydroxide enters weight ester scrubbing tower from tower, passes through the circulating pump of bottom
Alkali holding pH=8~10 of weight ester scrubbing tower are added to adjust for the pH value of sampling and measuring waste water.Using the alkali in this method waste water
Property content of material it is excessively high, be easy to cause waste water to be difficult to handle, processing cost is high.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of high-efficient, the waste water of neutralization reaction
Neutralized system few with the discharge of exhaust gas, during neutralization reaction in the suitable n-butyl acrylate production of the dosage of lye.
To achieve the goals above, the technical solution of the utility model is the neutralization system in a kind of production of n-butyl acrylate
System, the neutralized system include level-one static mixer, second level static mixer, neutralization reaction kettle, pH measurement device, coalescence point
N-butyl acrylate transfer tank and water phase transfer tank after phase device, neutralization；The mixed once liquid of the level-one static mixer exports
It is connect with second level static mixer entrance, the secondary mixture export and neutralization reaction kettle entrance of the second level static mixer connect
It connects, gaseous phase outlet, the entrance connection of gaseous phase outlet and vent trap is equipped in neutralization reaction kettle, the gas phase of vent trap goes out
Mouth is connect with tail gas absorption unit, and the neutralization reaction kettle is additionally provided with liquid-phase outlet, and pH measurement dress is equipped at the liquid-phase outlet
It sets, the liquid-phase outlet is connect with second level static mixer and neutralization coalescence phase-splitter respectively by neutralizing circulating pump；It neutralizes poly-
Knot phase-splitter oil is mutually exported to be connect with n-butyl acrylate transfer tank after neutralization, is neutralized in the outlet of coalescence phase-splitter water phase and water phase
Turn tank connection, neutralizes coalescence phase-splitter gaseous phase outlet and connect with tail gas absorption unit.Acrylic acid is made using two-stage static mixer
The thick ester mixed liquor of N-butyl is sufficiently mixed with lye, keeps neutralization reaction more complete.
Preferred technical solution, the liquid-phase outlet of n-butyl acrylate transfer tank and n-butyl acrylate store up after the neutralization
Tank connection, the gaseous phase outlet of n-butyl acrylate transfer tank is connect with tail gas absorption unit after neutralization；The water phase transfer tank
Liquid-phase outlet is connect with water pot is neutralized, and the liquid gaseous phase outlet of water phase transfer tank is connect with tail gas absorption unit.
Preferred technical solution is equipped with incinerator in the tail gas absorption unit.In the thick ester mixed liquor of n-butyl acrylate
Containing complicated volatile organism, direct emission will cause atmosphere pollution, it is therefore desirable to be arranged in tail gas absorption unit and burn
It burns furnace and carries out full combustion, be further processed.
Preferred technical solution, the coalescence phase-splitter and the pipeline after neutralizing between n-butyl acrylate transfer tank are equipped with
Heating muff.The organic phase separated from coalescence phase-splitter is not easy to flow when viscosity is larger, improves temperature by heating muff
Increase the mobility of fluid.The heat that the heat source of heating muff used is released from neutralization reaction.
Preferred technical solution, agitating paddle is equipped in the neutralization reaction kettle, and the agitating paddle edge is equipped with barrel scraper.
The reaction efficiency that agitating paddle effectively raises n-butyl acrylate thick ester mixed liquor and lye is set in neutralization reaction kettle.It prevents
The thick ester mixed liquor of n-butyl acrylate is excessively attached on barrel, improves the yield of reaction.
Preferred technical solution is equipped with pH on-line determination device at the second level static mixer outlet.Prevent level-one quiet
Lye excessive addition in state mixer, causes unnecessary waste, and Sewage treatment cost is caused to improve.
Preferred technical solution, in the neutralization reaction kettle pH measurement device include by the pH analyzer of electrical connection and from
Dynamic control device.Measure the pH value of mixed liquor after neutralization reaction kettle neutralizes by pH measurement device, pH value reaches during requirement passes through
Enter coalescence phase-splitter with circulating pump, pH value is not up to required to enter in second level static mixer, be continuesd to mix.
Preferred technical solution, each neutralizing device connecting pipe are serially connected with delivery pump and valve.
Preferred technical solution, the neutralization circulating pump are acid and alkali-proof pump.
The valve of preferred technical solution, each neutralizing device is electrically connected with the controller.
Advantages and beneficial effects of the utility model lie in that the utility model using two-stage static mixer by acrylic acid just
The thick ester mixed liquor of butyl ester is uniformly mixed with lye, improves the reaction efficiency of neutralization reaction；By going out in second level static mixer
Setting pH measurement device at mouthful and neutralization reaction kettle exit is effectively controlled the additive amount of lye, prevents lye excessive, increases
Add the processing difficulty and processing cost of subsequent waste water；By setting device for absorbing tail gas and water phase transfer tank, reaction process is reduced
The discharge of middle exhaust gas and waste water is more energy-saving and environmentally friendly entire production technology.
Detailed description of the invention
Neutralized system schematic diagram in the production of Fig. 1 n-butyl acrylate；
In figure: 1, level-one static mixer；2, second level static mixer；3, neutralization reaction kettle；4, pH measurement device；5, gather
Tie phase-splitter；6, n-butyl acrylate transfer tank after neutralizing；7, water phase transfer tank；8, vent trap；9, tail gas absorption unit；
10, circulating pump is neutralized.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
Embodiment 1
Neutralized system in a kind of production of n-butyl acrylate, the neutralized system includes level-one static mixer 1, second level
N-butyl acrylate transfer tank 6 and water after static mixer 2, neutralization reaction kettle 3, pH measurement device 4, coalescence phase-splitter 5, neutralization
Phase transfer tank 7；The mixed once liquid outlet of the level-one static mixer 1 is connect with 2 entrance of second level static mixer, described to have
Machine mixed liquor mixes 10min in level-one static mixer with lye, and once mixed liquid is pumped into second level static mixing by delivery pump
Device, the mixed once liquid and lye mix 20min, the secondary mixing of the second level static mixer 2 in secondary mixer
Liquid outlet is connect with 3 entrance of neutralization reaction kettle, and the second level mixed liquor is pumped into neutralization reaction kettle 3 by delivery pump, is neutralized anti-
It answers and is equipped with gaseous phase outlet in kettle 3, gaseous phase outlet is connect with the entrance of vent trap 8, the gaseous phase outlet and tail of vent trap 8
Aspiration unit 9 connects, and the neutralization reaction kettle 3 is additionally provided with liquid-phase outlet, is equipped with pH measurement device 4 at the liquid-phase outlet,
The liquid-phase outlet is connect with second level static mixer 2 and neutralization coalescence phase-splitter 5 respectively by neutralizing circulating pump 10, described to follow
Ring pump 10 is connected to reversal valve；The mixed liquor after neutralization is measured by pH measurement device, mixed liquor pH value at 8~10 into
Enter to neutralize coalescence phase-splitter 5；Enter second level static mixer 2 when mixed liquor pH value is undesirable；Neutralizing coalescence phase-splitter 5 has
Machine is mutually exported to be connect with n-butyl acrylate transfer tank 6 after neutralization, and the organic phase neutralized in coalescence phase-splitter passes through conveying
It is pumped into after neutralizing in n-butyl acrylate transfer tank, neutralizes the outlet of coalescence 5 water phase of phase-splitter and is connect with water phase transfer tank 7, institute
It states the water phase neutralized in coalescence phase-splitter to be pumped into water phase transfer tank by delivery pump, neutralizes coalescence phase-splitter gaseous phase outlet and tail
Aspiration unit 9 connects.
The liquid-phase outlet of n-butyl acrylate transfer tank 6 is connect with n-butyl acrylate storage tank after the neutralization, after neutralization
The gaseous phase outlet of n-butyl acrylate transfer tank 7 connect 9 with tail gas absorption unit；The liquid-phase outlet of the water phase transfer tank is in
It is connected with water pot, the liquid gaseous phase outlet of water phase transfer tank connect 9 with tail gas absorption unit.It is equipped with and burns in the tail gas absorption unit
Burn furnace.Pipeline after the coalescence phase-splitter and neutralization between n-butyl acrylate transfer tank is equipped with heating muff.The neutralization
Agitating paddle is equipped in reaction kettle, the agitating paddle edge is equipped with barrel scraper.
Embodiment 2
Embodiment 2 and embodiment 1 the difference is that: the second level static mixer is equipped with pH on-line determination device.It is described
PH measurement device includes the pH analyzer and automatic control device by electrical connection in neutralization reaction kettle.By mixed to second level static state
The measurement of mixed liquor in clutch, estimates the additive amount of lye in neutralization reaction kettle.The neutralization circulating pump is acid and alkali-proof pump.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into retouching.
Claims (10)
1. the neutralized system in a kind of n-butyl acrylate production, which is characterized in that the neutralized system includes that level-one static state is mixed
N-butyl acrylate transfer tank after clutch, second level static mixer, neutralization reaction kettle, pH measurement device, coalescence phase-splitter, neutralization
With water phase transfer tank；The mixed once liquid outlet of the level-one static mixer is connect with second level static mixer entrance, described
The secondary mixture export of second level static mixer is connect with neutralization reaction kettle entrance, and gaseous phase outlet is equipped in neutralization reaction kettle,
The connection of the entrance of gaseous phase outlet and vent trap, the gaseous phase outlet of vent trap connect with tail gas absorption unit, it is described in
It is additionally provided with liquid-phase outlet with reaction kettle, pH measurement device is equipped at the liquid-phase outlet, the liquid-phase outlet is by neutralizing circulation
Pump is connect with second level static mixer and neutralization coalescence phase-splitter respectively；Propylene after neutralizing the oil phase outlet of coalescence phase-splitter and neutralizing
Sour N-butyl transfer tank connection neutralizes the outlet of coalescence phase-splitter water phase and connect with water phase transfer tank, neutralizes coalescence phase-splitter gas phase
Outlet is connect with tail gas absorption unit.
2. the neutralized system in a kind of n-butyl acrylate production according to claim 1, which is characterized in that the neutralization
The liquid-phase outlet of n-butyl acrylate transfer tank is connect with n-butyl acrylate storage tank afterwards, n-butyl acrylate transfer tank after neutralization
Gaseous phase outlet connect with tail gas absorption unit；The liquid-phase outlet of the water phase transfer tank is connect with water pot is neutralized, water phase transfer
The liquid gaseous phase outlet of tank is connect with tail gas absorption unit.
3. the neutralized system in a kind of n-butyl acrylate production according to claim 2, which is characterized in that the tail gas
Incinerator is equipped in absorptive unit.
4. the neutralized system in a kind of n-butyl acrylate production according to claim 1, which is characterized in that the coalescence
Pipeline after phase-splitter and neutralization between n-butyl acrylate transfer tank is equipped with heating muff.
5. the neutralized system in a kind of n-butyl acrylate production according to claim 1, which is characterized in that the neutralization
Agitating paddle is equipped in reaction kettle, the agitating paddle edge is equipped with barrel scraper.
6. the neutralized system in a kind of n-butyl acrylate production according to claim 1, which is characterized in that the second level
Online pH measurement device is equipped at static mixer outlet.
7. the neutralized system in a kind of n-butyl acrylate production according to claim 1, which is characterized in that the neutralization
PH measurement device includes the pH analyzer and automatic control device by electrical connection in reaction kettle.
8. the neutralized system in a kind of n-butyl acrylate production according to claim 1, which is characterized in that the neutralization
Circulating pump is acid and alkali-proof pump.
9. the neutralized system in a kind of n-butyl acrylate production according to claim 1, which is characterized in that each neutralization
The connecting pipe of equipment is serially connected with delivery pump and valve.
10. the neutralized system in a kind of n-butyl acrylate production according to claim 9, which is characterized in that described each
The pipeline valve of a neutralizing device is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820637634.1U CN208430063U (en) | 2018-04-28 | 2018-04-28 | A kind of neutralized system in n-butyl acrylate production |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820637634.1U CN208430063U (en) | 2018-04-28 | 2018-04-28 | A kind of neutralized system in n-butyl acrylate production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451625A (en) * | 2019-07-17 | 2019-11-15 | 江苏新东风化工科技有限公司 | A kind of neutralization reaction technique of n-butyl acrylate production |
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2018
- 2018-04-28 CN CN201820637634.1U patent/CN208430063U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451625A (en) * | 2019-07-17 | 2019-11-15 | 江苏新东风化工科技有限公司 | A kind of neutralization reaction technique of n-butyl acrylate production |
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