Immobilized type ionic liquid catalytic reaction rectification device

A catalytic reaction and ionic liquid technology, applied in fractionation, organic chemistry, chemical instruments and methods, etc., to achieve the effects of good catalytic activity, easy separation and easy collection

Inactive Publication Date: 2016-03-23
NANJING POLYTECHNIC INSITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional esterification process, sulfuric acid or solid strong acid is selected as the catalyst. The reaction uses a fixed-bed reactor, and the separation mainly uses general rectification operations. Up to now, high-efficiency green catalysts have been used, combined with technologies such as fixed-bed reaction, rectification, and stripping. The operation of a tower chemical experimental device has not yet been reported

Method used

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  • Immobilized type ionic liquid catalytic reaction rectification device
  • Immobilized type ionic liquid catalytic reaction rectification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 The reactive distillation process shown. Before the experiment started, a certain amount of imidazole-p-toluenesulfonate ionic liquid ([Hmim]TsO / silicagel) immobilized on silica gel was filled in the catalyst fixed layer, and glass spiral packing φ4 was integrally filled in the packing layer. After checking the circuit and switching the valve of the pipe fitting, start the experiment. First open the cooling water of the tower top condenser, from the feed port 5 of the tower kettle, add 300ml of butanol and acetic acid mixture with a molar ratio of 1.2:1, and add 10ml of cyclohexane as a water-carrying agent, and feed through the external heating jacket 6. The tower kettle is heated until it boils so as to wet the tower body packing. Properly adjust the heating voltage to maintain full reflux in the tower, and continue feeding after the whole system is stable. Open the raw material feed valve 15 respectively, and adjust the feed ratio (mole) of butano...

Embodiment 2

[0033] Such as figure 1 The reactive distillation process shown. Before the experiment started, a certain amount of NaY molecular sieve-immobilized imidazole-p-toluenesulfonic acid ionic liquid ([Hmim]TsO / NaY) was first filled in the catalyst fixed layer, and glass spiral packing φ4 was integrally filled in the packing layer. After checking the circuit and switching the valve of the pipe fitting, start the experiment. First open the cooling water of the tower top condenser, from the feed port 5 of the tower kettle, add 300ml of butanol and acetic acid mixture with a molar ratio of 1.2:1, and add 10ml of cyclohexane as a water-carrying agent, and feed through the external heating jacket 6. The tower kettle is heated until it boils so as to wet the tower body packing. Properly adjust the heating voltage to maintain full reflux in the tower, and continue feeding after the whole system is stable. Open the raw material feed valve 15 respectively, and adjust the feed ratio (mole)...

Embodiment 3

[0036] Such as figure 1 The reactive distillation process shown. Before the experiment started, a certain amount of SBA-15 immobilized imidazole-p-toluenesulfonic acid ionic liquid ([Hmim]TsO / SBA-15) was filled in the catalyst fixed layer, and glass spiral packing φ4 was integrally filled in the packing layer. After checking the circuit and switching the valve of the pipe fitting, start the experiment. First open the cooling water of the tower top condenser, from the feed port 5 of the tower kettle, add 300ml of butanol and acetic acid mixture with a molar ratio of 1.2:1, and add 10ml of cyclohexane as a water-carrying agent, and feed through the external heating jacket 6. The tower kettle is heated until it boils so as to wet the tower body packing. Properly adjust the heating voltage to maintain full reflux in the tower, and continue feeding after the whole system is stable. Open the raw material feed valve 15 respectively, through the rotameter 16, adjust the feed ratio ...

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Abstract

The invention relates to an immobilized type ionic liquid catalytic reaction rectification device. The immobilized type ionic liquid catalytic reaction rectification device comprises a rectification tower and a raw material storage groove connected with the rectification tower, wherein fillers and a catalyst fixed layer are arranged in the rectification tower; the rectification tower is provided with a tower top reflowing device and a tower kettle storage groove. The immobilized type ionic liquid catalytic reaction rectification device is characterized in that the rectification tower is connected with the tower top reflowing device and a liquid separation rectification head through an electromagnetic reflux ratio controller; the tower top reflowing device comprises an outer reflowing rectification head and a tower top condenser; the liquid separation rectification head is formed by connecting three pipes which are arrayed in parallel and exist independently, and is controlled through the electromagnetic reflux ratio controller. With the adoption of the device, an esterification and product separation process can be effectively shortened, the production efficiency of an esterified product is improved, a traditional process can be replaced and environment-friendly and efficient reaction rectification is realized.

Description

technical field [0001] The invention relates to a chemical experiment device, in particular to a solid-supported ionic liquid catalytic reaction rectification device. technical background [0002] Esterification is a very important type of organic chemical reaction. Usually a fixed bed reactor is used. Under certain reaction conditions, a series of ester compounds can be synthesized through alkyd esterification, which are widely used in petrochemical and energy new materials etc. But at present, concentrated sulfuric acid is mostly used as a catalyst in the production of esters. The equipment is severely corroded and easily causes environmental pollution. After the esterification reaction is completed, it is difficult to separate the target product from the reactant, and there are disadvantages such as complicated follow-up treatment and high energy consumption. [0003] As a new type of catalyst, ionic liquid has been widely used in chemical reactions. Song Hang et al. di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01J8/02C07C67/08C07C67/54C07C69/14C07C69/24
CPCB01D3/14B01J8/02C07C67/08C07C67/54
Inventor 蔡源俞昭志张冠军汤立新季锦林许宁王蕴弢
Owner NANJING POLYTECHNIC INSITUTE
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