Method for producing isopropylamine

A technology of isopropylamine and diisopropylamine, which is applied in the field of isopropylamine production, can solve the problems that diisopropylamine cannot be effectively converted into isopropylamine, the operation difficulty of the rectification system, and the increase of production cost, etc., and the method is simple, feasible, and considerable economic benefits , the effect of easy operation

Active Publication Date: 2010-03-31
CHINA PETROLEUM & CHEM CORP +1
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  • Claims
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AI Technical Summary

Benefits of technology

This patented technology allows for efficient generation of anilinium from nitrogen monoxide (NO) without requiring extra equipment or expensive materials. By adding another liquid called ammoniumn acid instead of urea during this process, it becomes more effective than previous methods due to its ability to absorb light efficiently with minimal absorption caused by NO molecules themselves. Additionally, when producing iso-propylamines through decomposition of organic compounds containing carbon atoms within certain chemicals, there are advantages over existing techniques such as catalytic cracking because less fuel needs to be used compared to traditional processes like thermal treatment. Overall, these technical results lead to improved efficiency and reduced costs associated with current technologies

Problems solved by technology

Technologies described involve different ways to efficiently manufacture high quality products from certain chemical substances like pimoline (dimyrofurane), cyclohexene diamide(cyclohexylenebutronic acid) dimercaptoformazolidium salt compounds called imiprasilbodiester adductor hydride complexes containing alkoxysuccyanato groups together with other metals like iron powder, zinc oxircone, manganese dioxidendehyde, etc., while generating impurities during the conversion step. Existing techniques either require multiple stages of isolative distillations or continuous adjustments over time, leading to reduced efficiency and increase costs associated with these processes.

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  • Method for producing isopropylamine
  • Method for producing isopropylamine
  • Method for producing isopropylamine

Examples

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Embodiment 1

[0031] This example is used to illustrate that acetone, diisopropylamine, and isopropanol are converted into isopropylamine at different reaction temperatures.

[0032] In the laboratory, a fixed-bed reactor was used, and the isopropylamine catalyst produced by Beijing Research Institute of Chemical Industry was used, and the filling volume was 50 ml to carry out the gas phase reaction.

[0033] Experiment 1: Use acetone as raw material to carry out hydrogenation reaction to synthesize isopropylamine. The reaction conditions are: the volume space velocity of liquid acetone is 0.5h -1 , the pressure is normal pressure, the reaction temperature is 152°C, and the molar ratio of acetone:hydrogen:ammonia is 1:3:3. The test results are listed in Table 1.

[0034] Test 2: In order to simulate the material in the industrial plant, a mixture of 50 wt% of diisopropylamine and isopropanol is used as a raw material. In the presence of hydrogen, they react with ammonia and convert to isop...

Embodiment 2

[0039] This embodiment is used to explain the hydroamination reaction of the present invention with staged temperature control.

[0040] In order to simulate the segmental temperature control of the reactor in the industrial device, the reactor is divided into two sections in the laboratory, that is, two sections of beds, each section is filled with 50 ml of isopropylamine catalyst produced by Beijing Research Institute of Chemical Industry, and the temperature of the two sections is controlled respectively. Perform a gas phase reaction.

[0041] The feed is a mixture containing 75wt% acetone, 12.5wt% diisopropylamine and 12.5wt% isopropanol, and the liquid volume space velocity of acetone is 0.5h -1 . The reaction temperature of the first section bed is controlled at 152°C, the reaction temperature of the second section bed is controlled at 170°C, and the pressure is normal pressure, (acetone+diisopropylamine+isopropanol): hydrogen: the mol ratio of ammonia is 1:3:3. The c...

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Abstract

The invention discloses a method for producing isopropylamine, which belongs to the technical field of amine. To solve the problem that the prior isopropylamine industrial production device cannot effectively convert diisopropylamine into the isopropylamine, a reactor for an acetone hydroamination reaction performs the sectional control of the reaction temperature, the reaction temperature of a first section positioned at an inlet of the reactor is between 110 and 150 DEG C, and the reaction temperature of a downstream section is 5 to 30 DEG C higher than that of an upstream section which is adjacent to the downstream section. Along with the gradual reduction of the concentration of acetone along a bed, the reaction temperature is improved section by section, which is favorable for converting the diisopropylamine and isopropanol into the isopropylamine, thereby reducing the circulation of the diisopropylamine and the isopropanol, reducing energy consumption, and preventing the diisopropylamine from being gradually accumulated in a system so as not to need operating a diisopropylamine rectification system with difficult operation. The method is simple, feasible and easy to realize,and has considerable industrial application value and economic benefit.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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