Production method of 1,3-butanediol

A production method, the technology of butanediol, which is applied in the production process field of synthesizing 1,3-butanediol, can solve problems such as difficulty in meeting market demand and difficulty in expanding production capacity, and achieve the effect of reducing the production of three wastes and reducing production costs

Inactive Publication Date: 2018-09-28
ZHEJIANG XINHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This shows that the production capacity of this method is difficult to expand, and it is difficult to meet market demand.

Method used

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  • Production method of 1,3-butanediol
  • Production method of 1,3-butanediol
  • Production method of 1,3-butanediol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] according to figure 1 Described technical process, use metering pump to pump into 40% formaldehyde aqueous solution and propylene in the single tube stainless steel reactor that acid cationic resin catalyst is housed, control under certain temperature and pressure to react, reaction product chromatographic analysis, reaction condition and The results are shown in Table 1

[0034]

Embodiment 2

[0036] According to the process flow, a metering pump is used to pump methanol, 4-methyl-1,3-dioxane and tetrahydropyran-4- The mixture of alcohols is controlled to react at a certain temperature and pressure, and the reaction product chromatographic analysis, reaction conditions and results are shown in Table 2

[0037]

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Abstract

The invention relates to a production method of 1,3-butanediol, in particular to a production process for synthesizing 1,3-butanediol by using propylene and formaldehyde as starting raw materials, andbelongs to the technical field of chemical engineering. The process is characterized in that formaldehyde and the propylene are used as the starting raw materials; prins condensation reaction is performed under the effect of solid acid catalysts; then, the product and methanol are subjected to dehydration reaction to prepare the 1,3-butanediol. The process has the advantages that the raw materialresources are sufficient; the process is suitable for large-scale continuous production; the environment-friendly effect is achieved; three wastes (waste water, waste air and waste solid) are almostnot generated; the comprehensive production cost is low.

Description

technical field [0001] The invention relates to a chemical production process, in particular to a production process for synthesizing 1,3-butanediol using propylene and formaldehyde as starting materials. Background technique [0002] 1,3-Butanediol, referred to as 1,3-BDO, has the characteristics of good hygroscopicity, odorless, low toxicity, good water solubility, etc., and also has the reactivity of diols. It is mainly used in the production of plasticizers, unsaturated polyester resins, industrial dehydrating agents, etc.; it can be used as a moisturizer in cosmetics, in lotion, cream, lotion, gel, toothpaste and other products; it can also be used as Moisturizer and softener for textiles, tobacco and paper, antibacterial agent for cheese or meat, etc. [0003] The current production methods of 1,3-butanediol are mainly acetaldehyde condensation hydrogenation method and biological fermentation method. The acetaldehyde condensation method uses acetaldehyde as a raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/38C07C29/128C07C31/20C07C41/48C07C43/30
CPCC07C29/128C07C29/38C07C41/48C07D309/12C07D319/06C07C31/207C07C43/30
Inventor 刘承伟王卫明应思斌黄小鹏唐一前黄菊朱翔周斌
Owner ZHEJIANG XINHUA CHEM
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