Method for preparing sec-butylamine from etherified C4

A technology after sec-butylamine and ether, applied in the field of preparing sec-butylamine, can solve problems such as unseen, achieve simple separation process and solve the effect of overcapacity of acetic acid

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the existing patents, there is only a single preparation method of ethylamine or separate sec-butyla

Method used

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  • Method for preparing sec-butylamine from etherified C4
  • Method for preparing sec-butylamine from etherified C4
  • Method for preparing sec-butylamine from etherified C4

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] This example provides a method for preparing sec-butylamine by C4 after ether.

[0038] The first catalyst is the macroporous sulfonic acid cation exchange resin produced by Dandong Mingzhu Special Resin Co., Ltd.

[0039] The preparation method of the second catalyst is as follows:

[0040] (1) Carrier molding: take 300g of alumina powder and 6g of scallop powder and mix them in a kneader. Add 270mL of water, knead for 20min, then extrude into a 3mm thick clover shape with an extruder, dry at 120°C, and then bake at 800°C for 4 hours to obtain an alumina carrier.

[0041] (2) Loading active components: take 188.1g of Co(NO 3 ) 2 ·6H 2 O (industrial grade, purity 98%), 54.31g of Zn (NO 3 ) 2 ·6H 2 O (analytical pure) was dissolved in water into 180mL solution, and the above solution was loaded on the obtained 100g carrier by spraying twice; after each spraying, it was dried at 120°C for 4 hours, and then roasted at 390°C for 4 hours. hours, t...

Example Embodiment

[0055] Example 2

[0056] This example provides a method for preparing sec-butylamine by C4 after ether.

[0057] The first catalyst is the macroporous sulfonic acid cation exchange resin produced by Dandong Mingzhu Special Resin Co., Ltd.

[0058] The preparation method of the second catalyst is as follows:

[0059] (1) Carrier molding: take 300g of alumina powder and 6g of scallop powder and mix them in a kneader. Add 270mL of water, knead for 20min, then extrude into a 3mm thick clover shape with an extruder, dry at 120°C, and then bake at 800°C for 4 hours to obtain an alumina carrier.

[0060] (2) Loading active components: take 271.4g of Co(NO 3 ) 2 ·6H 2 O (technical grade, purity 98%) is dissolved in water to be 176mL solution, and above-mentioned solution is loaded on the obtained 100g carrier with spray dipping method twice; The catalyst was calcined at ℃ for 4 hours to obtain the catalyst in the oxidized state. (3) Reduction of the catalyst in the oxidized st...

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Abstract

The invention belongs to the technical field of chemical engineering, and particularly relates to a method for preparing sec-butylamine from etherified C4. The method comprises the following steps: (1) carrying out first reaction on acetic acid and etherified C4 under the action of a first catalyst to obtain a first stream containing sec-butyl acetate; and (2) uniformly mixing the first stream with hydrogen and ammonia, and carrying out a second reaction under the action of a second catalyst to obtain a second stream containing sec-butylamine. The technological method provided by the invention is simple in process, has good conversion rate and target product selectivity, is easy to realize industrial application, and is an effective way for reasonably applying etherified C4 and acetic acid resources.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and more specifically relates to a method for preparing sec-butylamine by C4 after ether. Background technique [0002] Sec-butylamine is a colorless, volatile liquid with an ammonia smell, soluble in water, ethanol, ether, acetone, etc., and has anti-mold and bactericidal effects. It was recommended by the United Nations Health Organization and the Food Organization as early as the 1980s. It is an excellent antistaling agent with low toxicity, no deformity and no carcinogenicity, and its demand is also increasing in recent years. [0003] The main source of C4 mixture is catalytic cracking unit and ethylene cracking unit. The mixed C4 component after the etherification reaction with methanol is called post-ether C4. The main components of post-ether C4 are butene, isobutane, n- Butane, cis-2-butene, trans-2-butene, etc. For many years, the rational use of C4 resources has not been re...

Claims

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Application Information

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IPC IPC(8): C07C211/07C07C209/46C07C211/05
CPCC07C209/46C07C67/08C07C211/07C07C69/14C07C211/05
Inventor 向良玉田保亮唐国旗
Owner CHINA PETROLEUM & CHEM CORP
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