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Continuous-flow catalytic reactor and assembly method and application thereof

A technology of catalytic reactors and assembly methods, applied in chemical instruments and methods, chemical/physical/physicochemical processes of energy application, chemical/physical processes, etc., can solve the problem of loss of activity, limited catalyst life, and catalytic active components. Carrier limited binding force and other issues, to achieve the effect of improving utilization efficiency, saving separation steps, and promoting chemical reactions

Pending Publication Date: 2020-04-07
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the binding force between the catalytically active components and the carrier is limited, and it is easy to dissolve into the liquid phase medium in the continuous flow reaction and lose activity, resulting in limited catalyst life.

Method used

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  • Continuous-flow catalytic reactor and assembly method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: The structure of a kind of continuous flow catalytic reactor of this embodiment is as figure 1 shown. Among them, the reaction tube 1 is W-shaped, made of glass, with an inner diameter of 1.8 cm, a length of 70 cm, and a volume of 178 ml. The reaction tube 1 is filled with coconut shell activated carbon filler 2, the particle size is 12 to 30 mesh, and the mass is 80 grams. The two ends of the filler are respectively packaged with quartz wool 3 and 4; , seal and fix the graphite electrodes 11, 12 with silica gel plugs 9, 10; two electrodes go deep into the reaction tube 1 and short-circuit with the quartz wool 3, 4, and short-circuit with the negative pole of the DC power supply 13; open 14 in the middle of the reaction tube, The plug 15 seals and fixes the graphite electrode 16, and the electrode goes deep into the reaction tube 1 and short-circuits with the filler 2, and short-circuits with the positive pole of the DC power supply 13.

[0052] Prepare ...

Embodiment 2

[0053] Embodiment 2: In the reaction tube 1 described in Embodiment 1, fill the chlorine ion exchange resin filler 2, the particle size is 20~50 mesh, the mass is 100 grams, the two ends of the filler are respectively packaged with glass wool 3, 4, and the connection mode with the DC power supply With embodiment 1.

[0054] Prepare 400 ml of molybdic acid solution with a concentration of 0.2 g / L. Turn on the DC power supply 13 and keep the voltage at 10 volts. The solution is pumped into the reaction tube 1 from the liquid inlet at a flow rate of 2 ml / min, flows through the filler 2, and is pumped out from the liquid outlet 6, and the molybdate ions are electrosorbed in the On packing 2, a continuous flow catalytic reactor is obtained.

Embodiment 3

[0055] Embodiment 3: fill coconut shell activated carbon filler 2 in the reaction tube 1 described in embodiment 1, particle diameter 12~30 orders, quality 80 grams. Both ends of the filler are encapsulated with glass wool 3 and 4 respectively. The connection direction of the positive and negative poles of the DC power supply is opposite to that of Embodiment 1. The glass wool 3 and 4 at both ends of the filler are short-circuited to the positive pole of the power supply 13, and the middle part is short-circuited to the negative pole of the power supply 14.

[0056] Prepare 100 ml of ferric hydroxide sol with a concentration of 2 g / L. Turn on the DC power supply 13 and keep the voltage at 50 volts. The sol is pumped into the reaction tube 1 from the liquid inlet at a flow rate of 0.2 ml / min, flows through the filler 2, and is pumped out from the liquid outlet 6. The ferric hydroxide colloidal particles are charged by the electric Adsorption on packing 2 results in a continuou...

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Abstract

The invention discloses a continuous-flow catalytic reactor and an assembly method and application thereof. The continuous-flow catalytic reactor comprises a reaction container, a filler packaged in the reaction container and a charged catalytic component, wherein the catalytic component is immobilized on the filler under the action of a direct-current electric field. The continuous-flow catalyticreactor can be applied to continuous-flow reactions such as monosaccharide epimerization reactions and the like. The continuous-flow catalytic reactor has the advantages of simple structure, capability of realizing unattended operation, safe and convenient operation and the like; and when the continuous-flow catalytic reactor is used for continuous-flow reactions, since the catalytic component isimmobilized by the direct-current electric field and cannot flow out along with a product, the separation step of a catalyst is omitted, and the utilization efficiency of the catalyst is improved.

Description

technical field [0001] In particular, the present invention relates to a continuous flow catalytic reactor, its assembly method and application, such as application in monosaccharide epimerization reaction. Background technique [0002] The traditional tank-type liquid phase reaction solves the problem of demand for a large number of chemical products, but there are also many shortcomings that are difficult to overcome, such as safety hazards, environmental pollution, huge energy consumption, unstable product quality, large floor space, and difficulty in process amplification, etc. (Progress in Chemistry, 2016, 28(6):829-838). Continuous flow reaction just solves these problems with its unique mixing method, efficient mass and heat transfer, and low solvent requirement. "Continuous flow chemistry" or "flow chemistry" refers to the technology of pumping materials and carrying out chemical reactions in a continuous flow mode. In the past 20 years, continuous flow reaction te...

Claims

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Application Information

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IPC IPC(8): B01J8/02B01J19/08B01J19/02B23P19/00
CPCB01J8/02B01J8/0292B01J19/087B01J19/02B23P19/00
Inventor 张业新张建陈慧杨杰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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