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Adipic acid synthesizer and use method thereof

A synthesis device and adipic acid technology, applied in the field of adipic acid synthesis, can solve problems such as high local temperature, low heat dissipation efficiency, and many side reactions, and achieve the effects of improving product quality, reducing production costs, and improving production efficiency

Active Publication Date: 2016-10-12
中国平煤神马控股集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxidation of cyclohexanol with nitric acid is a strong exothermic reaction, low heat dissipation efficiency can easily cause local overheating, and eventually lead to more side reactions

Method used

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  • Adipic acid synthesizer and use method thereof
  • Adipic acid synthesizer and use method thereof
  • Adipic acid synthesizer and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] See attached figure 1 , The adipic acid synthesis device of the present invention includes a low-temperature synthesis reaction device A and a high-temperature synthesis reaction device B. The low-temperature synthesis reaction device A and the high-temperature synthesis reaction device B are connected in series through a pipeline; the low-temperature synthesis reaction device A includes a heat conducting layer A1, Reactor A2, agitator A3 (the agitator A3 is composed of a stirring shaft A31 and a stirring blade A32), cyclohexanol feed port A4, cyclohexanol control valve A5, cyclohexanol distribution pipe A6, two cyclohexanol Alcohol distributor A7, pressure gauge A8, thermometer A9, level gauge A10, gas phase discharge control valve A11, partition A12, catalyst acid liquid feed port A13, catalyst acid liquid control valve A14, catalyst acid liquid distribution pipe A15, two A catalyst acid distributor A16, a material discharge control valve A17, a circulating pump A18 an...

Embodiment 2

[0035] Example 2: Basically the same as Example 1, but the difference:

[0036] See attached figure 1 , 2 The distributor includes a distributor tray 2, a distributor bearing 3, a liquid outlet 4, and a distributor blade 5. The liquid outlet 4 has an angle of 80° between the straight line and the distributor blade.

Embodiment 3

[0037] Embodiment 3: Basically the same as embodiment 1, but the difference:

[0038] See attached figure 1 , 2 The distributor includes a distributor tray 2, a distributor bearing 3, a liquid outlet 4 and a distributor blade 5. The straight line of the liquid outlet 4 and the distributor blade form an angle of 90°.

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Abstract

The invention discloses an adipic acid synthesizer and a use method thereof. The adipic acid synthesizer comprises a low-temperature synthetic reaction device and a high-temperature synthetic reaction device which are connected in series through a pipeline. The use method comprises the following steps of: carrying out heating reaction on the low-temperature synthetic reaction device, so as to obtain a low-temperature reaction material; introducing the low-temperature reaction material into the high-temperature synthetic reaction device to secondarily react, carrying out heating reaction on the high-temperature synthetic reaction device, and collecting the discharged material after the reaction; and carrying out conventional treatment on the collected material, so as to obtain an adipic acid product. By connecting two sets of devices in series, the original six reaction kettles are reduced to be two reaction kettles, so that the equipment investment is reduced, and the production efficiency is improved; meanwhile, the reactions are respectively carried out in a low-temperature region and a high-temperature region, so that the yield of the target product is increased.

Description

1. Technical Field: [0001] The invention relates to the technical field of adipic acid synthesis, in particular to a liquid distribution synthesis device for adipic acid and a use method thereof. 2. Background technology: [0002] With the continuous enhancement of people's awareness of energy conservation and environmental protection, more and more attention is paid to the energy consumption in chemical production. How to improve the production efficiency of reaction devices is a technical issue that people pay attention to. [0003] At present, the production process commonly used in the adipic acid production industry is the serial mode of 6 reactors. The 6 reactors are arranged from high to low. The nitric acid solution of the catalyst enters from the reactor with the highest position, and then overflows into the other 5 reactors. Cyclohexanol enters the corresponding reactor through 6 material pumps with different pump speeds. The reaction temperature is maintained at 70°C-90...

Claims

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Application Information

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IPC IPC(8): B01J19/18B01J4/02B01J4/00C07C51/31C07C55/14
CPCB01J4/001B01J4/008B01J4/02B01J19/0006B01J19/0066B01J19/1862C07C51/316C07C55/14
Inventor 董建勋窦晓勇郑晓广张明王红专郭卫东李世强王素静张晓鹏张晓燕欧玲杨晓吕国辉段文蕊李超任文杰王允从
Owner 中国平煤神马控股集团有限公司
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