Post-treatment method of cyclododecatriene reaction liquid

A cyclododecatriene and reaction liquid technology, applied in chemical instruments and methods, purification/separation of hydrocarbons and hydrocarbons, etc., can solve the complex quenching process, low quenching efficiency and unstable operation of the separation system and other problems, to achieve the effect of saving the reaction process, good stability and stable composition

Active Publication Date: 2021-03-19
WANHUA CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a post-treatment method for cyclododecatriene reaction liquid, which adopts the compounding method of mercaptan quenching agen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1:

[0030] 1 g of ammonia gas was dissolved in 5 g of ethiol, and stirred to a homogeneous state to prepare a quencher, and 0.6 g of the quenched CDT reaction liquid was added, and the mixture was uniformly obtained, and the reaction liquid was controlled. The mixture reaction temperature is 50 ° C, which is 0.5 h, i.e., the quenched CDT reaction solution, further quenching effect evaluation experiment, the reaction mixture after quenching is heated to 150 ° C, heat insulation 24 h, gas phase detection to obtain the loss rate of CDT It is 0.22%.

Example Embodiment

[0031] Example 2:

[0032]10 g of ethanol sodium was dissolved in 10 g of ethiol, mixed stirred to a homogeneous state to obtain a quencher, and the 2G quenched CDT reaction liquid was obtained, and the mixture was uniformly obtained, and the reaction mixture was controlled mixture. The reaction temperature was 60 ° C, which was 0.7 h, i.e. to obtain a quenched CDT reaction solution, further quenching effect evaluation experiment, the reaction liquid after quenching is heated to 150 ° C, heat insulation 24 h, and the gas phase detection results in the loss rate of the CDT is 0.21%.

Example Embodiment

[0033] Example 3:

[0034] 5 g of sodium of ethanol was dissolved in 8 g of ethiol, mixed stirred to a homogeneous state to obtain a quencher, and 1.3 g of quenched CDT reaction liquid was added to 1000 g of unsublished CDT reaction liquid, stir well to obtain a reaction mixture, control reaction The reaction temperature of the liquid mixture was 70 ° C, which was 0.8 hours, i.e. to obtain a quenched CDT reaction solution, further quenched effect evaluation experiment, heat-retained reaction liquid to 150 ° C, heat insulation 24 h, gas phase detection to obtain CDT loss The rate is 0.12%.

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Abstract

The invention relates to a post-treatment method of a cyclododecatriene reaction liquid. The method comprises the following steps: mixing a mercaptan compound with an alkaline assistant to obtain a quenching agent, mixing and quenching the quenching agent with a CDT reaction solution, and finally performing separating and recovering. After-treatment is carried out in a quenching mode, the productstability is good, the phenomenon of impurity increase is avoided, and stable and continuous operation can be realized.

Description

technical field [0001] The invention relates to the field of reaction liquid post-treatment technology, in particular to a post-treatment method of a reaction liquid containing cyclododecatriene and an active catalyst. Background technique [0002] Cyclododecatriene, English name cyclododecatriene, referred to as CDT, is an important source of raw materials for orthodox dodecane compounds, which can be used in long-chain nylon (especially nylon 12, nylon 612), flame retardants and spices and other fields. [0003] CDT is obtained by using butadiene as a raw material and performing a polymerization reaction under the action of a homogeneous Ziegler-Natta catalyst (Ziegler-Nattacatalyst). This catalytic process has been proved to be a butadiene cyclopolymerization process catalyzed by Ti active compounds. The related research is in Titanium-catalyzed cyclotrimerization of butadiene Part III. Et x AlCl 3-x (x = 1-2) systems, Journal of Molecular catalysis, 1991 (70), 9-28 and ...

Claims

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Application Information

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IPC IPC(8): C07C7/152C07C13/277
CPCC07C7/152C07C2601/20C07C13/277
Inventor 付松王静陈雁玲黎源李俊平冯民昌崔纯燹李源明董洋
Owner WANHUA CHEM GRP
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