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Reaction device for synthetic production of diisooctyl sebacate, and synthetic process method of diisooctyl sebacate

A technology of diisooctyl sebacate and a reaction device, which is applied in the field of synthesis and preparation of biomass lubricating oil base oil diisooctyl sebacate, can solve the problem that there is no industrialized production and application device, and the production accuracy of finished products is difficult to guarantee. It is difficult to accurately grasp the operating temperature and other problems, so as to achieve the effect of good temperature adjustability, convenient reaction progress, and enhanced human operability

Pending Publication Date: 2017-05-17
PUYANG SHENGYUAN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 1, the method for preparing with sulfuric acid as catalyst, this kind of method mainly has four disadvantages: 1.1, need to carry out technological steps such as neutralization, washing, dealcoholization, decolorization after esterification reaction finishes, technological process is complicated, and reaction selectivity is poor, Produced waste water pollutes the environment
1.4. Long reaction cycle, low yield and high product color number
[0004] 2. The method of using solid acid as a catalyst for preparation. This process is mainly found in papers published by universities. It is limited to laboratory devices and has no industrial production and application devices.
[0005] 3. The method of preparation using tungstosilicic acid, 732 resin, and ferric chloride mixed preparation as a catalyst, this method is only found in laboratory synthesis methods, and there is no industrial production and application device
[0006] Due to the influence of the above aspects, diisooctyl sebacate cannot be widely used in jet engine lubricating oil base oils
[0007] At the same time, most of the existing synthetic reaction devices for the production of di-isooctyl sebacate have unreasonable structures, which easily cause the reaction time to be too long, the operating temperature is difficult to accurately grasp, the esterification reaction is incomplete, and the by-products in the synthesis process are relatively high. Many, low material recycling rate, low production efficiency, and difficult to guarantee the production accuracy of finished products

Method used

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  • Reaction device for synthetic production of diisooctyl sebacate, and synthetic process method of diisooctyl sebacate
  • Reaction device for synthetic production of diisooctyl sebacate, and synthetic process method of diisooctyl sebacate
  • Reaction device for synthetic production of diisooctyl sebacate, and synthetic process method of diisooctyl sebacate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] First, add 4400L of isooctyl alcohol into the esterification kettle and turn on stirring and heating with heat transfer oil. Set the temperature of the heat transfer oil in the esterification kettle to 70°C. When the temperature of the kettle rises to 60°C, turn on the vacuum system to maintain the vacuum in the kettle. -0.06Mpa, open the feed valve, suck 2000kg of sebacic acid into the esterification kettle through vacuum, and add 10kg of catalyst tetrabutyl titanate, close the feed valve, and turn off the vacuum system. Keep the vacuum in the kettle at -0.05Mpa. At this time, the monoesterification reaction starts, and the monoesterification reaction is an exothermic reaction. In order to make the monoesterification reaction fully, no heating is required at this time. , set the temperature of the heat transfer oil at 200°C. Due to the existence of vacuum, when the temperature of the kettle rises to 165°C, the temperature at the outlet of the esterification tower rises...

Embodiment 2

[0068] First, add 4400L of isooctyl alcohol into the esterification kettle and turn on the stirring of the esterification kettle and heating with heat transfer oil. Set the temperature of the heat transfer oil in the esterification kettle to 75°C. When the temperature of the esterification kettle rises to 60°C, turn on the vacuum system , keep the vacuum in the kettle at -0.06Mpa, open the feed valve, suck 2000kg of sebacic acid into the esterification kettle through vacuum, and add 15kg of catalyst tetrabutyl titanate, close the feed valve, and turn off the vacuum system. Keep the vacuum in the kettle at -0.05Mpa. At this time, the monoesterification reaction begins. The monoesterification reaction is an exothermic reaction. In order to make the monoesterification reaction fully, no heating is required at this time. After the temperature of the esterification kettle rises to 100 ℃, the temperature does not rise any more, and the monoesterification reaction is completed. Set th...

Embodiment 3

[0071] First, add 4400L of isooctyl alcohol into the esterification kettle and turn on stirring and heating with heat transfer oil. Set the temperature of the heat transfer oil in the esterification kettle to 80°C. When the temperature of the esterification kettle rises to 60°C, turn on the vacuum system to keep the kettle The internal vacuum degree is -0.04Mpa, open the feed valve, suck 2000kg of sebacic acid into the esterification kettle through vacuum, and add 20kg of catalyst tetrabutyl titanate, close the feed valve, and turn off the vacuum system. Keep the vacuum in the kettle at -0.05Mpa. At this time, the monoesterification reaction begins, and the monoesterification reaction is an exothermic reaction. In order to make the monoesterification reaction fully, no heating is required at this time. After the reaction is complete, set the temperature of the heat-conducting oil in the esterification tank to 200°C. Due to the existence of vacuum, when the temperature of the e...

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Abstract

The invention relates to a reaction device for synthetic production of diisooctyl sebacate, which comprises an esterification reactor, an esterification tower, an esterification condenser, a separator, a rectifying still, a rectifying tower, a rectifying condenser, an alcohol receiving tank, an ester receiving tank, a vacuum-pumping system and a pump delivery system, wherein the esterification tower is arranged on the top part of the esterification reactor; an alcohol recycling pipeline circularly communicated with the esterification reactor is arranged on the side wall of the separator; a discharge hole of the esterification reactor is connected with a feed inlet of the rectifying still through a feed pump in the pump delivery system; the rectifying tower is arranged on the top part of the rectifying still; an outlet end of the rectifying tower is connected with an inlet end of the rectifying condenser; an outlet end of the rectifying condenser is connected with the ester receiving tank through the alcohol receiving tank. According to the reaction device provided by the invention, condition parameters such temperature and pressure intensity can be adjusted at any time during a reaction process, materials are enabled to fully react, the full and reasonable utilization of the materials is realized maximally through a synthetic process method, and the quality, the yield and the purity of the finished product diisooctyl sebacate are ensured.

Description

technical field [0001] The invention relates to the technical field of synthesis and preparation of biomass lubricating oil base oil diisooctyl sebacate, in particular to a reaction device for synthesizing diisooctyl sebacate and a process for synthesizing diisooctyl sebacate method. Background technique [0002] Diisooctyl sebacate is an excellent low temperature resistant plasticizer, which is often used in the technical field of plasticizing application of polyvinyl chloride cable materials, cold resistant films, artificial leather and other resins. At the same time, it also has an important use as the base oil of biomass-based lubricating oil. Due to its high temperature resistance, low temperature resistance, and degradability, the base oil can be used as the base oil of jet engine lubricating oil to improve the traditional synthesis. The base oil polyalphaolefin oil is easy to shrink the rubber and has poor compatibility with additives. For the synthesis and preparat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/50
CPCC07C67/08C07C69/50
Inventor 张立权王息辰钟生濮
Owner PUYANG SHENGYUAN ENERGY TECH