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Method for preparing epichlorohydrin from dichloropropanol

A technology of epichlorohydrin and dichloropropanol, which is applied in the chemical industry to achieve the effects of avoiding by-product salt and waste water, strong selectivity, and prolonging life

Active Publication Date: 2018-09-28
山东民基新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, the preparation of epichlorohydrin under the conditions of caustic soda, quicklime or slaked lime is also easy to produce a large amount of by-product salt and waste water

Method used

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  • Method for preparing epichlorohydrin from dichloropropanol
  • Method for preparing epichlorohydrin from dichloropropanol
  • Method for preparing epichlorohydrin from dichloropropanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of rare earth catalyst CeO 2 / Na 2 O / γ-Al 2 o 3

[0036] First weigh 25.4g of cerium carbonate, 51.3g of sodium carbonate, and 180.0g of aluminum isopropoxide, mix them, add 200.0g of water, mix and stir at room temperature, and cut evenly with a shearing machine. , and the outlet temperature is 90°C for spray molding to obtain a spray material;

[0037] Weigh 140.0g of the spray material obtained above, put it into a dry mixer and stir for 10 minutes, continue to weigh 1.0g of glass fiber chopped strands, 5.0g of yellow dextrin, 5.0g of polyvinyl alcohol, 2.5g of water, 20.0g of aluminum The sol was sequentially added into the dry mixer according to the above order and mixed and stirred for 15 minutes to obtain the wet mixed material. Put the wet mixed material through the mud trainer to practice the mud, squeeze out the mud section, put it into a material bucket with a plastic bag, and practice the mud twice; put the mud section that has been trai...

Embodiment 2

[0044] (1) Preparation of rare earth catalyst Pr 2 o 3 / K 2 O / ZnO

[0045] First weigh 27.1g of praseodymium carbonate, 51.4g of potassium carbonate, and 135.2g of zinc carbonate, mix them, add 178.4g of water, mix and stir at room temperature, and cut evenly with a shearing machine. Spray molding at a temperature of 90°C to obtain a spray material;

[0046] Weigh 138.0g of the spray material obtained above and put it into a dry mixer and stir for 10 minutes, continue to weigh 2.0g of glass fiber chopped strands, 5.0g of polyvinyl alcohol, 25g of glycerin, and 30.0g of saccharin, and add dry Mix and stir in a mixer for 15 minutes to obtain a wet mixed material. Put the wet mixed material through the mud trainer to practice the mud, squeeze out the mud section, put it into a material bucket with a plastic bag, and practice the mud twice; put the mud section that has been trained twice into the hydraulic extruder to filter, and A 6-mesh filter screen is installed at the ext...

Embodiment 3

[0053] (1) Preparation of Rare Earth Catalyst La 2 o 3 / K 2 O / γ-Al 2 o 3

[0054] First weigh 26.7g of lanthanum carbonate, 36.7g of potassium carbonate, and 78.4g of pseudo-boehmite, mix them, add 98.6g of water, mix and stir at normal temperature, after shearing evenly with a shearing machine, the temperature at the inlet of the spray tower is 280 ℃, and the outlet temperature is 90 ℃, and the spray molding is obtained to obtain the spray material;

[0055] Weigh 135.0g of the spray material obtained above and put it into a dry blender and stir for 15 minutes, continue to weigh 1.0g of glass fiber chopped strands, 18.0g of water, and 15.0g of aluminum sol, and add them to the dry blender in order to mix Stir for 15 minutes to obtain a wet mix. Put the wet mixed material through the mud trainer to practice the mud, squeeze out the mud section, put it into a material bucket with a plastic bag, and practice the mud twice; put the mud section that has been trained twice in...

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Abstract

The invention belongs to the technical field of chemical industry, and particularly relates to a method for preparing epichlorohydrin from dichloropropanol. According to the method, in existence of arare earth catalyst, dichloropropanol is cyclized to prepare epichlorohydrin, wherein the rare earth catalyst is prepared from a rare earth oxide, an alkali metal oxide, and an amphoteric oxide. In the method for preparing epichlorohydrin from dichloropropanol, the rare earth catalyst prepared from the rare earth oxide, the alkali metal oxide, and the amphoteric oxide is used, so that generation of byproducts salt and wastewater is effectively avoided, and the used rare earth catalyst has a long service life, uniform activity and strong selectivity, and can be recycled.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for preparing epichlorohydrin from dichloropropanol. Background technique [0002] Epichlorohydrin (ECH) is a volatile, unstable, colorless oily gas with chloroform-like gas. ECH is widely used in medicine, coatings, integrated circuits, plasticizers, surfactants and other industries, and is a very important fine chemical product and organic synthesis intermediate. The epoxy resin produced with ECH as the main raw material has excellent properties, such as chemical corrosion resistance, impact resistance, good chemical stability, low shrinkage rate, and excellent dielectric properties. [0003] At present, the industrial production method for synthesizing epichlorohydrin from dichloropropanol mainly uses sodium hydroxide solution or calcium hydroxide suspension as a catalyst, and dichloropropanol reacts to synthesize epichlorohydrin. In this metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D303/08C07D301/26B01J23/10
CPCB01J23/002B01J23/10B01J2523/00C07D301/26C07D303/08B01J2523/12B01J2523/31B01J2523/3712B01J2523/13B01J2523/27B01J2523/3718B01J2523/3706B01J2523/14
Inventor 杨中原毕明亮张海朋陈衍坤李建军王建芹韦兵祝新涛张瑞扈世琳
Owner 山东民基新材料科技有限公司
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