CN202410472U

CN202410472U - Tail gas treatment device for production of diallyl phthalate

Info

Publication number: CN202410472U
Application number: CN201220020761XU
Authority: CN
Inventors: 李庆山; 张光; 钟同涛
Original assignee: SHOUGUANG NUOMENG CHEMICAL CO Ltd
Current assignee: SHOUGUANG NUOMENG CHEMICAL CO Ltd
Priority date: 2012-01-17
Filing date: 2012-01-17
Publication date: 2012-09-05
Anticipated expiration: 2022-01-17

Abstract

The utility model relates to a tail gas treatment device for production of diallyl phthalate. The device comprises a vacuum pump and a condenser, wherein the air inlet end of the vacuum pump is connected with the tail gas hole of a diallyl phthalate synthesis kettle; the condenser is arranged at the air outlet end of the vacuum pump; and the condenser is connected with a recovery groove for receiving a feed liquid. The device disclosed by the utility model can condense and recover allyl alcohol in the tail gas, so that environment pollution is avoided, the waste of raw materials is reduced, and production cost is reduced.

Description

Be used for the exhaust gas processing device that diallyl phthalate is produced

Technical field

The utility model relates to a kind of chemical industry equipment, is specifically related to a kind of exhaust gas processing device that diallyl phthalate is produced that is used for.

Background technology

Diallyl phthalate can prepare the DAP plastics, and these plastics are the excellent thermosetting plasticses of a kind of electric property, and its characteristics: electrical property is excellent, and under the condition of high temperature, changes less; During moulding mobile better, be prone to make complex-shaped small-sized and have a making of tiny inserts; Dimensional stability is good; To the metal insert non-corrosiveness.Therefore the DAP plastics are to make electrical equipment and the indispensable a kind of material of electronic component, and diallyl phthalate has crucial status especially.

The general production method that adopts of diallyl phthalate is: phthalic anhydride generates the phthalic acid sodium salt with the liquid caustic soda reaction, again with propenyl esterification and get bullion under 40-60 ℃, negative pressure.

In actual production process, better carry out in order to make reaction, be negative pressure in the synthesis reactor of general diallyl phthalate; Need utilize vavuum pump that the gas in the agitated reactor is extracted out; And the producing equipment of the diallyl phthalate of traditional structure all directly is discharged into the gas of extracting out in the atmosphere, has not only polluted environment, and can contain raw material propylene alcohol in the gas of discharging; The significant wastage that this will cause raw material causes production cost to improve.

The utility model content

The utility model technical problem to be solved provides and is used for the exhaust gas processing device that diallyl phthalate is produced, and it can effectively reclaim the useful material in the tail gas, reduces production costs, thereby eliminates defective in the above-mentioned background technology.

For solving the problems of the technologies described above, the technical scheme of the utility model is:

Be used for the exhaust gas processing device that diallyl phthalate is produced; It is characterized in that; Comprise vavuum pump and condenser; The inlet end of said vavuum pump is connected in the tail gas mouth of diallyl phthalate synthesis reactor, and said condenser is arranged at the outlet side of said vavuum pump, and said condenser is connected with the accumulator tank that is used to receive feed liquid.

As a kind of improvement, be provided with cooling coil in the said condenser, feed condensed water in the said cooling coil.This condenser structure is simple, and condensation effect is good, can with the useful material of the overwhelming majority in the tail gas for example propenyl be condensed into liquid phase, and hold back.

As a kind of improvement, said vavuum pump comprises screw pump, and screw pump can produce stronger negative pressure, is beneficial to the carrying out of reaction, also is beneficial to separate impurities in the product.

The utility model is when work, and screw pump starts, can be with the inner negative pressure that produces of synthesis reactor; Synthesis reactor tail gas mouth then can be discharged tail gas, contains for example propenyl of many useful materials in the tail gas, and tail gas can at first get into condenser; Cooling coil in the condenser can cool to tail gas, and at this moment, the propenyl that contains in the tail gas can become liquid phase and be trapped; The propenyl of liquid phase gets into accumulator tank, utilizes again after can passing through purification process.

Owing to adopted technique scheme, the beneficial effect of the utility model is:

The exhaust gas processing device that the utility model provides is applicable to the production process of diallyl phthalate, and it is connected with vavuum pump and condenser in order at the tail gas mouth of synthesis reactor; Based on this structure; Tail gas can at first get into condenser, and the cooling coil in the condenser can cool to tail gas, and the propenyl that contains in the tail gas can become liquid phase and be trapped; The propenyl of liquid phase gets into accumulator tank, utilizes again after the purification process; Not only avoid environmental pollution, and reclaimed raw material, reduced production cost.

The utility model is the condenser that set inside has cooling coil, and this condenser structure is simple, and condensation effect is good, can with the useful material of the overwhelming majority in the tail gas for example propenyl be condensed into liquid phase, and hold back.

The utility model uses screw pump, and screw pump can produce stronger negative pressure, is beneficial to the carrying out of reaction, also is beneficial to separate impurities in the product.

Description of drawings

Accompanying drawing is the utility model structural representation;

Among the figure: 1. vavuum pump, 2. condenser, 3. synthesis reactor, 4. tail gas mouth, 5. accumulator tank, 6. cooling coil.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.

Shown in accompanying drawing; Be used for the exhaust gas processing device that diallyl phthalate is produced; Comprise vavuum pump 1 and condenser 2; The inlet end of said vavuum pump 1 is connected in the tail gas mouth 4 of diallyl phthalate synthesis reactor 3, and said condenser 2 is arranged at the outlet side of said vavuum pump 1, and said condenser 2 is connected with the accumulator tank 5 that is used to receive feed liquid.

In the present embodiment, be provided with cooling coil 6 in the said condenser 2, feed condensed water in the said cooling coil 6.This condenser 2 is simple in structure, and condensation effect is good, can with the useful material of the overwhelming majority in the tail gas for example propenyl be condensed into liquid phase and hold back.

Simultaneously, said vavuum pump 1 adopts screw pump, and screw pump can produce stronger negative pressure, is beneficial to the carrying out of reaction, also is beneficial to separate impurities in the product.

Describe the course of work of the utility model in detail below in conjunction with accompanying drawing.

The utility model is when work, and vavuum pump 1 starts, and can make the synthesis reactor 3 inner negative pressure that produce; 4 in the tail gas mouth of synthesis reactor 3 can be discharged tail gas, and tail gas can at first get into condenser 2, and the cooling coil 6 in the condenser 2 can cool to tail gas; At this moment; The propenyl that contains in the tail gas can become liquid phase and be trapped, and the propenyl of liquid phase gets into accumulator tank 5, utilizes again after can passing through purification process.

The utility model is not limited to the above-mentioned specific embodiment, and all are based on the technical conceive of the utility model, and the structural improvement of having done all falls among the protection domain of the utility model.

Claims

1. be used for the exhaust gas processing device that diallyl phthalate is produced; It is characterized in that: comprise vavuum pump and condenser; The inlet end of said vavuum pump is connected in the tail gas mouth of diallyl phthalate synthesis reactor; Said condenser is arranged at the outlet side of said vavuum pump, and said condenser is connected with the accumulator tank that is used to receive feed liquid.

2. the exhaust gas processing device that is used for diallyl phthalate production as claimed in claim 1 is characterized in that: be provided with cooling coil in the said condenser.

3. the exhaust gas processing device that is used for diallyl phthalate production as claimed in claim 1, it is characterized in that: said vavuum pump comprises screw pump.