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System for producing ethyl butyrate continuously

A technology for the production of ethyl butyrate and a feeding system, which is applied in the preparation of carboxylate, the preparation of organic compounds, organic chemistry, etc., can solve the problems of many by-products, equipment corrosion, and low efficiency, and achieve continuous production, Easy separation and high efficiency

Inactive Publication Date: 2013-04-24
YIXING HENGXING FINE CHEM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The production process is intermittently operated, the efficiency is low, the catalyst cannot be reused, there are certain material loss and three waste pollution problems in neutralization and washing, and the recovery of materials also requires energy consumption.
Moreover, using sulfuric acid as a catalyst, there are many by-products and serious corrosion of equipment.

Method used

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  • System for producing ethyl butyrate continuously
  • System for producing ethyl butyrate continuously

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Embodiment 1

[0022] Embodiment 1: as figure 2 As shown, 3500 kg of strongly acidic resin is filled in the reactor 004 as a catalyst. Before starting the continuous feeding and discharging reaction, the reactor 004 with a capacity of 5 cubic meters is filled with the raw materials butyric acid and ethanol in an equimolar ratio, and the reactor The temperature of 004 ​​is controlled at 75°C. When the reaction reaches the equilibrium conversion rate (esterification rate is about 45%), then restart the feed metering pump 010. At this time, the feed rate of butyric acid is 384 kg / h, and the feed rate of ethanol is The feed rate is 200 kg / h. After the fresh raw materials are mixed by the mixer 003, they are continuously fed into the reactor 004 from the lower inlet of the reactor 004. At the same time, the crude product is continuously discharged from the upper outlet of the reactor 004, and the outlet is at normal pressure. , now the discharge rate is 584 kg / h, which is equivalent to the feed ...

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Abstract

The invention discloses a system for producing ethyl butyrate continuously. The system comprises a feeding system, a reaction system and a separating system; the feeding system comprises a butyric acid raw material tank, an ethanol raw material tank and a metering pump; the reaction system comprises a mixer, a reactor, solid catalyst, a crude product tank and a metering pump; and the separating system comprises a primary classification tower, an oil-water separator, a secondary dealcoholization tower, a tertiary finished product tower and a metering pump. The system has the advantage that continuous production of ethyl butyrate is realized through continuous mixing, feeding reaction and three-stage rectification separation.

Description

technical field [0001] The invention relates to a system for continuously producing chemical products, in particular to a system for continuously producing ethyl butyrate. Background technique [0002] At present, the production of ethyl butyrate generally adopts a batch method, using n-butyric acid and ethanol as raw materials, using sulfuric acid or p-toluenesulfonic acid as catalysts, using cyclohexane, benzene or toluene as water-carrying agents, and using a water-separating device. The reactor is heated to carry out the esterification reaction, and the water is collected continuously until the reaction is completed, and then cooled, neutralized, washed with water, and then separated to obtain the finished product. Process flow chart such as figure 1 Shown: [0003] The production process is intermittently operated, the efficiency is low, and the catalyst cannot be reused. There are certain material loss and three waste pollution problems in neutralization and washing,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/24
Inventor 王恒秀陈维斌张千崇明本费建强顾海平承阳
Owner YIXING HENGXING FINE CHEM
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