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Preparation method of butyl acrylate

A technology of butyl acrylate and acrylic acid, which is applied in the field of preparation of organic compounds, can solve the problems of large reactor volume and low reaction rate, and achieve the effects of simplified separation process, fast reaction speed and reduced concentration

Active Publication Date: 2011-11-23
SHANGHAI HUAYI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

This reactor still has a single reaction zone and separation zone in essence, so like the aforementioned patent, the reaction rate is low and the reactor volume is relatively large

Method used

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  • Preparation method of butyl acrylate
  • Preparation method of butyl acrylate
  • Preparation method of butyl acrylate

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Embodiment

[0031] see figure 1 , which shows a schematic flow diagram of the principle of the rectification column system mentioned in the method of the present invention. 1 is the rectification section of the rectification tower, 2 is the reaction section, 3 is the stripping section, 4 is the condensate phase separation tank, 5 is the thin-film evaporator, 21 is the overhead condenser, and 22 is the tower kettle reboiler; The fresh AA is sent to the first plate of the reaction section by the pipeline 7, the fresh BuOH is sent to the bottom plate of the reaction section by the pipeline 8, and the supplemented fresh catalyst solution is sent to the first plate of the reaction section by the pipeline 6, and the polymerization inhibitor is passed through Pipeline 20 joins the first plate at the top of the tower; AA reacts with BuOH in the liquid layer on the plate of the reaction section, and the AEB and H produced simultaneously 2 O, BuOH distill out the liquid phase under the effect of a...

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Abstract

The invention relates to a preparation method of butyl acrylate, which is characterized in that the synthesis of butyl acrylate is completed in a reaction rectifying tower, the separation of products and raw materials is completed through azeotropic rectification, and heavy components generated by the reaction in a stripping section and the tower are resolved into the raw materials and the products so as to finally obtain a butyl-acrylate-enriched organic phase having an acrylic acid content of 4ppm at the tower top.

Description

technical field [0001] The present invention relates to a kind of preparation method of organic compound in chemical industry field, specifically, relate to a kind of method for preparing butyl acrylate by reactive distillation. In this method, the synthesis of butyl acrylate is completed in a rectification tower, and the separation of the product and the raw material is completed through azeotropic distillation. At the same time, the heavy components generated by the reaction are decomposed into raw materials and product, and finally obtain an organic phase rich in butyl acrylate with an acrylic acid content of 4 ppm at the top of the tower. Background technique [0002] Acrylate monomers are an important class of raw material monomers for synthetic polymers. Butyl acrylate (AEB), as a synthetic monomer and modification additive, is widely used in coatings, adhesives, textiles, papermaking, leather and plastics, acrylate rubber and other fields. [0003] In the following ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/54C07C67/08C07C67/54
Inventor 崔曜舒月峰罗明陨钱志刚马建学
Owner SHANGHAI HUAYI NEW MATERIAL
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