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Method and device for semi-continuously producing acetyl tributyl citrate

A technology of acetyl tributyl citrate and tributyl citrate, which is applied in the field of semi-continuous production of acetyl tributyl citrate, can solve the problems of heavy production process, poor equipment utilization rate, and low investment, and achieve the goal of device structure Simple, low labor intensity and high degree of automation

Active Publication Date: 2015-12-30
山东朗晖石油化学股份有限公司
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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for the semi-continuous production of acetyl tributyl citrate, which solves the problems of low output, poor equipment utilization and heavy production technology in the existing technology, and has the ability to Low consumption, low investment, high product yield and high quality; the invention also provides the device used

Method used

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  • Method and device for semi-continuously producing acetyl tributyl citrate

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Embodiment 1

[0028] like figure 1 Shown, the used device of the method for the semi-continuous production of acetyl tributyl citrate of the present invention comprises reactor 4, is characterized in that: reactor 4 passes pipeline and surge tank 5, the first booster pump 6 , heater 7, deacidification tower 8, condenser 10, vacuum pump 12, non-condensable gas tank 13 are connected successively; Wherein, the outside of reactor 4 is also connected with tributyl citrate tank 1, acetic anhydride feeding device 2 and catalyst respectively The feeding device 3; the condenser 10 is also connected to the acetic acid storage tank 11; the lower part of the deacidification tower 8 is provided with a reboiler 9, and the reboiler 9 is also connected to the crude ester tank 14, the second booster pump 15, and the continuous water washing device in sequence;

[0029] The continuous water washing device includes a sodium hydroxide feeder 16, a mixing tank 17, a condensate tank 18, a recovery water tank 19,...

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Abstract

The invention belongs to the technical field of rubber plasticizer production, and particularly relates to a method and device for semi-continuously producing acetyl tributyl citrate. The device comprises a reaction still. The reaction still is sequentially connected with a buffer tank, a first boosting pump, a heater, a deacidification tower, a condenser, a vacuum pump and a non-condensable gas tank through pipelines. The outer side of the reaction still is further connected with a tributyl citrate tank, an acetic anhydride feed device and a catalyst feed device. The condenser is connected with an acetic acid storage tank. The lower portion of the deacidification tower is provided with a reboiler which is sequentially connected with a raw ester tank, a second boosting pump and a continuous washing device. The method specifically includes the step that acetylated coarse products obtained in a reaction enter the continuous washing device to be washed after being flashed twice in the heater. The problems that in an existing process, yield is low, device utilization rate is low, and production process is cumbersome are solved; the device is simple in structure and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of rubber plasticizer production, and in particular relates to a semi-continuous production method and device for acetyl tributyl citrate. Background technique [0002] Acetyl tributyl citrate is a non-toxic plasticizer, which can be used as a plasticizer for polyvinyl chloride, cellulose resin and synthetic rubber. Used for non-toxic PVC granulation, food packaging containers, children's toys, medical products, films, plates, cellulose coatings and other products. It can also be used as a stabilizer for polyvinylidene chloride, etc. [0003] The production capacity of traditional acetyl tributyl citrate production equipment is less than 10,000 tons per year. Each process is intermittently operated. Each process has a reactor. The production process is cumbersome, the output is low, and the utilization rate of equipment is poor. In the production process of acetyl tributyl citrate, after the acetylation re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/67
CPCC07C67/08C07C69/67
Inventor 邢光全王韧魏乐钊孙长军
Owner 山东朗晖石油化学股份有限公司
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