Preparation method of 2-chloropropane

A manufacturing method and technology for chloropropane, which are applied in chemical instruments and methods, halogenated hydrocarbon preparation, organic chemistry and other directions, can solve the problems of reduced service life of the reactor, inability to improve production efficiency, and increased production cost, and achieve improved efficiency, The effect of speeding up the reaction and increasing the conversion rate

Inactive Publication Date: 2018-12-21
浙江胡涂硅科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

2-chloropropane is generally synthesized by isopropanol and hydrochloric acid, but liquid hydrochloric acid is highly corrosive and easily corrodes the reactor, which reduces the service life of the reactor, and the reaction rate is low, and the final product is low, making The production cost increases, but the production benefit cannot be improved

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  • Preparation method of 2-chloropropane
  • Preparation method of 2-chloropropane
  • Preparation method of 2-chloropropane

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The manufacture method of 2-chloropropane, comprises the following steps:

[0022] S1. Use a vacuum pump to extract the air in the reactor made of stainless steel to form a vacuum inside the reactor, then continue to feed nitrogen into the reactor so that the pressure in the reactor is 120kPa and then stop feeding the protective gas. gas;

[0023] S2. Adding 10g of iron with a purity of 99.99% and a diameter of 0.05mm and 300ml of isopropanol with a purity of 100% to the reactor filled with protective gas, heating the reactor to raise the temperature in the reactor to 110 ℃, and keep the temperature in the reactor constant;

[0024] S3, slowly feed into the hydrogen chloride gas of 310ml in the reactor, and by passing into or extracting protective gas in the reactor, make the pressure in the reactor remain in 180kPa;

[0025] S4, use a thermometer to measure the temperature change in the reactor, after the temperature in the reactor stops rising after feeding hydrogen...

Embodiment 2

[0028] The manufacture method of 2-chloropropane, comprises the following steps:

[0029] S1. Use a vacuum pump to pump out the air in the reactor made of stainless steel to form a vacuum inside the reactor, then continue to feed argon into the reactor so that the pressure in the reactor is 120kPa and then stop the protection. sexual gas;

[0030] S2. Add 10 g of halogenated spherical alumina with a particle size of 3 mm and a pore capacity of 0.7 ml / g and 300 ml of isopropanol with a purity of 100% into a reactor filled with protective gas, and heat the reactor to make the reactor The temperature in the reactor is raised to 120°C, and the temperature in the reactor is kept constant;

[0031] S3, slowly feed 310ml of hydrogen chloride gas into the reactor, and pass into or extract protective gas in the reactor, so that the pressure in the reactor remains within 180kPa;

[0032] S4, use a thermometer to measure the temperature change in the reactor, after the temperature in t...

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Abstract

The invention discloses a preparation method of 2-chloropropane. The preparation method of the 2-chloropropane comprises the following steps: S1, after a vacuum state is formed in a reaction kettle, introducing protective gas into the reaction kettle; S2, adding a catalyst and isopropanol into the reaction kettle full of protective gas and heating the reaction kettle; S3, slowly introducing hydrogen chloride gas into the reaction kettle; and S4, after the hydrogen chloride gas is introduced and the temperature of the reaction kettle stops being increased, stopping introducing the hydrogen chloride gas to obtain the 2-chloropropane. Reaction is conducted by using the gaseous hydrogen chloride and the gaseous hydrogen chloride does not have corrosion effect, so that corrosion to the reactionkettle is avoided; furthermore, oxygen does not exist in the reaction kettle and only inert gas exists in the reaction kettle, and the temperature of the reaction kettle is not less than 100 DEG C, so that water in the reaction kettle exists in the form of gas, the fact that the hydrogen chloride exists in the form of gas all the time is guaranteed, the stability and the safety of the productionflow are guaranteed and occurrence of production accidents is reduced.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a method for producing 2-chloropropane. Background technique [0002] 2-Chloropropane, insoluble in water, soluble in toluene, methanol, ether, is a stable colorless liquid. 2-chloropropane is generally synthesized by isopropanol and hydrochloric acid, but liquid hydrochloric acid is highly corrosive and easily corrodes the reactor, which reduces the service life of the reactor, and the reaction rate is low, and the final product is low, making The production cost increases, but the production benefit cannot be improved. [0003] Therefore, we propose a production method of 2-chloropropane for solving the above-mentioned problems. Contents of the invention [0004] The purpose of the present invention is in order to solve the shortcoming that exists in the prior art, and the manufacture method of the 2-chloropropane that proposes. [0005] The manufacture method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/16C07C19/01
CPCC07C17/16C07C19/01
Inventor 徐继农吴建平戴建明
Owner 浙江胡涂硅科技有限公司
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