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A kind of production method of fixed bed continuous synthesis polyether amine

A production method and chemical synthesis technology, which is applied in the field of continuous fixed-bed synthesis of polyetheramine, can solve the problems of unsuitability for large-scale industrialization, high reaction pressure and temperature, and high requirements for process conditions, and achieve easy automatic control, pressure and The effect of low temperature and low moisture

Active Publication Date: 2017-11-21
扬州晨化新材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned continuous method adopts multiple fixed-bed reactors, and the residence time of the reaction materials in the reactors is short, and the production cost is low; but the production equipment is complex, the process conditions are high, the reaction pressure and temperature are relatively high, and the catalyst requirements are diversified. Insufficient transformation rate, not suitable for large-scale industrialization

Method used

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  • A kind of production method of fixed bed continuous synthesis polyether amine

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Embodiment 1

[0023] Activated skeleton nickel catalyst: The skeleton nickel catalyst used is supported by alumina, and the supported metal content (reduced state) is: 60% nickel, 10% copper, and 3% lanthanum. The catalyst is loaded in the reactor in sections, and the reduction temperature is 150°C, the heating rate is 0.1°C / min, and the reduction time is 40h, to obtain a fixed-bed reactor containing an activated skeleton nickel catalyst loaded with nickel, copper and lanthanum.

[0024] Preparation of polyether amine: first pour polypropylene glycol ether (molecular weight 200) and liquid ammonia into each raw material tank respectively, and then pour polypropylene glycol ether and liquid ammonia into the pipeline with a volume ratio of 1:1.35 after being metered by a metering pump Mix, and then spray through the nozzle to form a uniform mixed liquid, and then fully mix the mixed liquid with hydrogen (the hydrogen source is continuously provided by decompression of the pressure regulator) a...

Embodiment 2

[0028] Activated skeleton nickel catalyst: The skeleton nickel catalyst used is based on alumina as the carrier, and the supported metal content (reduced state) is: nickel 70%, copper 8%, lanthanum 2%; the catalyst is packed in the reactor in sections, after reduction The temperature is 270° C., the heating rate is 1° C. / min, and the reduction time is 30 h, and a fixed-bed reactor containing an activated skeleton nickel catalyst loaded with nickel, copper and lanthanum is obtained.

[0029] Preparation of polyether amine: Pour polypropylene glycol ether (molecular weight: 2000) and liquid ammonia into the raw material tank respectively. After the polypropylene glycol ether and liquid ammonia are metered by the metering pump, they are poured into the pipeline with a volume ratio of 1:1.98 for mixing. Then spray through the nozzle to form a uniform mixed liquid, and then fully mix the mixed liquid with hydrogen (the hydrogen source is continuously provided by a pressure regulator...

Embodiment 3

[0033] Activated skeleton nickel catalyst: The skeleton nickel catalyst used is based on silicon oxide, and the supported metal content (reduced state) is: 80% nickel, 5% copper, and 1.5% lanthanum; the catalyst is mixed in the reactor, and the reduction temperature 300° C., a heating rate of 2° C. / min, and a reduction time of 25 hours to obtain a fixed-bed reactor containing an activated skeleton nickel catalyst loaded with nickel, copper, and lanthanum.

[0034] Preparation of polyether amine: Pour trimethylolpropane polypropylene glycol ether (molecular weight 430) and liquid ammonia into the raw material tank respectively, and trimethylolpropane polyoxypropylene ether and liquid ammonia are respectively measured by a metering pump and then calculated according to the volume ratio The ratio of 1:2.29 is poured into the pipeline for mixing, and then sprayed through the nozzle to form a uniform mixed liquid, and then the mixed liquid and hydrogen (the hydrogen source is contin...

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Abstract

A production method for continuous fixed-bed synthesis of polyether amine, which relates to the technical field of hydrogenation ammonia (amine) of polyether polyols, long-chain aliphatic alcohols or aromatic alcohols, in which polyether polyols and liquid ammonia are uniformly mixed by spraying It is then mixed with hydrogen, and then in a fixed-bed reactor containing an activated skeleton nickel catalyst loaded with nickel, copper and lanthanum, hydrogen ammonia is generated at a temperature of 130°C to 280°C and a pressure of 3.0MPa to 15.0MPa. chemical reaction; after the gas-liquid separation of the reactant, the liquid material is dehydrated and deaminated by the evaporator, and then discharged continuously to obtain polyetheramine. The invention is a production method for continuously synthesizing polyetheramine which is easy to realize automatic control.

Description

technical field [0001] The invention relates to the technical field of hydrogenation ammonia (amine) of polyether polyols, long-chain aliphatic alcohols or aromatic alcohols, in particular to a production method for continuous fixed-bed synthesis of polyetheramines. Background technique [0002] A series of amine compounds can be prepared by subjecting polyether polyols, long-chain aliphatic alcohols or aromatic alcohols containing terminal hydroxyl groups to hydrogenation (amine) reactions, which can be widely used in epoxy resin curing agents, Wind energy blade curing agent, polyurethane polyurea elastomer, gasoline cleaning agent, water-based coating, textile finishing agent and epoxy toughening and other fields. [0003] Patent CN 201110188767.8 discloses a preparation process of amino-terminated polyether. The method uses polyether polyols with a number-average Preparation of polyetheramines by catalytic reductive amination. [0004] Patent CN201110188776.7 discloses ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/00C07C217/28C07C213/02
Inventor 房连顺董晓红安淑强管丹王世林毕继辉崔强祥郑军峰
Owner 扬州晨化新材料股份有限公司