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Morpholine production system

A production system, morpholine technology, applied in the field of morpholine production system, can solve problems such as low reaction efficiency, low reaction yield, and impact on economic benefits, and achieve the effects of improving economic benefits, improving catalytic activity, and improving reaction efficiency

Pending Publication Date: 2020-11-06
四川鸿鹏新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the diethanolamine raw material required by the diethanolamine method is expensive, the reaction yield is low, the production cost is high, and the product is no longer competitive; therefore, the industry mostly uses diethylene glycol and ammonia to prepare morpholine under hydrogen conditions and the presence of a catalyst. On the one hand, in the existing morpholine production system, due to the relatively low activity, selectivity and life of the catalyst, the reaction is not complete and the reaction efficiency is not high; on the other hand, the traditional atmospheric pressure method is used to produce morpholine , in the production system basically only pursues the acquisition of the product morpholine, and basically discharges all the "exhaust gas and waste" generated in the production process, which not only causes environmental pollution but also causes waste of raw materials, affecting economic benefits

Method used

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  • Morpholine production system

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preparation example Construction

[0027] In the present embodiment, the preparation method of the modified palladium catalyst comprises the following steps:

[0028] S1. will contain Pd 2+ salt solution, Cu 2+ The salt solution, the metal-organic framework and the peptizer are mixed uniformly to form a solution A;

[0029] S2. Mix glacial acetic acid, distilled water and peptizer evenly to form B solution;

[0030] S3. Mixing solution A and solution B, while stirring, and heating in a water bath to obtain a gel;

[0031] S4. Prepare the Pd-Cu-metal-organic framework catalyst through drying and heat treatment.

[0032] In this embodiment, in the step S3, an oven is used for drying, the drying temperature is 40°C-100°C, and the drying time is 1h-3h;

[0033] In this embodiment, in the step S4, the drying treatment is as follows: drying in an oven, the drying temperature is 100°C-150°C, and the drying time is 8h-10h to obtain crystals, which are ground to obtain powdery objects; the heat treatment is: The mu...

Embodiment 1

[0035] A morpholine production system, using diethylene glycol and liquid ammonia as raw materials, under the conditions of hydrogen and modified palladium catalysts, adopts a low-pressure gas phase method, successively passes through a condenser, a decarburizer, and a deammonization tower, and respectively separates gas phase hydrogen and liquid Phase ammonia is separated, and then processed by the finished product rectification tower and diethylene glycol rectification tower to separate morpholine and diethylene glycol; wherein, the molar ratio of diethylene glycol, liquid ammonia and hydrogen is 1:5:30; the reaction The temperature is 200°C and the reaction pressure is 1.4MPa.

[0036] The preparation method of modified palladium catalyst comprises the following steps:

[0037] S1. will contain Pd 2+ salt solution, Cu 2+ The salt solution, MIL-101 and peptizer are mixed evenly to form A solution;

[0038] S2. Mix glacial acetic acid, distilled water and peptizer evenly t...

Embodiment 2

[0042] A morpholine production system, using diethylene glycol and liquid ammonia as raw materials, under the conditions of hydrogen and modified palladium catalysts, adopts a low-pressure gas phase method, successively passes through a condenser, a decarburizer, and a deammonization tower, and respectively separates gas phase hydrogen and liquid Phase ammonia is separated, and then processed by the finished product rectification tower and diethylene glycol rectification tower to separate and obtain morpholine and diethylene glycol; wherein, the molar ratio of diethylene glycol, liquid ammonia and hydrogen is: 1:10:50; The reaction temperature is 260°C, and the reaction pressure is 1.7MPa.

[0043] The preparation method of modified palladium catalyst comprises the following steps:

[0044] S1. will contain Pd 2+ salt solution, Cu 2+ The salt solution, MIL-101 and peptizer are mixed evenly to form A solution;

[0045] S2. Mix glacial acetic acid, distilled water and peptizer ...

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Abstract

The invention relates to the field of morpholine production, and discloses a morpholine production system. Diethylene glycol and liquid ammonia are adopted as the raw materials, a low-pressure gas-phase method is adopted under the conditions of hydrogen and a modified palladium catalyst, gas-phase hydrogen is separated from liquid-phase ammonia gas after condensation, decarburization and deamination, and diethylene glycol and morpholine are obtained through continuous rectification separation. The modified palladium catalyst provided by the invention has high activity, high stability and highselectivity, the catalytic activity of the reaction can be greatly improved, and the reaction efficiency is improved; on the other hand, a condenser, a decarburization device, a deamination tower, amorpholine rectifying tower and a diethylene glycol rectifying tower are sequentially utilized in the production process, hydrogen, liquid ammonia and diethylene glycol are separated out and returnedto the production system again to be recycled, the production cost is greatly reduced, economic benefits are improved, and meanwhile pollution to the environment is reduced.

Description

technical field [0001] The invention relates to the technical field of morpholine production, in particular to a morpholine production system. Background technique [0002] Morpholine, also known as morpholine or 1,4-oxazepine, molecular formula C 4 h 9 NO, one of the important cyclic amines used in industry, is a colorless water-absorbing oily liquid, and is a mild base. Morpholines contain secondary amine groups and exhibit all typical reactivity features of secondary amine groups. Due to the characteristics of nitrogen-oxygen heterocycles, morpholine occupies an important position in chemical production, and is an intermediate in the manufacture of many fine chemical products. It has become one of the fine petrochemical products with important commercial uses. It can be used to prepare NOBS, OTOS and other rubber vulcanization accelerators and rust inhibitors, preservatives, surfactants, descaling agents, pain relievers, local anesthetics, fruit preservatives, textile ...

Claims

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Application Information

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IPC IPC(8): C07D295/023C07D295/027B01J31/22
CPCC07D295/023C07D295/027B01J31/1691B01J35/396
Inventor 黄凤翔杨俊袁波石飞
Owner 四川鸿鹏新材料有限公司
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