Solid phase synthesis method by gas stream to increase efficiency and continuous microwave radiation, and apparatus therefor

A technology of solid-phase synthesis and microwave radiation, which is applied in the field of airflow synergistic continuous microwave radiation solid-phase synthesis reaction and equipment, can solve the problems of melting of reactants and products, overheating of high-temperature coking points, temperature out of control, etc., and increase the speed of chemical reactions , reduce energy costs, and speed up the response

Active Publication Date: 2005-09-07
JIANGNAN UNIV
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Problems solved by technology

Microwave heating Because the microwave energy is directly converted inside the heated system, if the heat accumulated in the heated system cannot be effectively released, microwave heating will easily lead to temperature out of control, and the overheating phenomenon of "high temperature coking point" will appear
[0004] The existing large-scale industrial microwave processing equipment generally adopts a continuous transfer box-type microwave chemical reactor, which has a large processing capacity, but it is a non-closed system, which is only suitable for static physical heating of materials, and the continuous "internal heating" effect can make the reaction system The internal heat accumulates to form a high-temperature coking point, causing the temperature to lose control instantaneously. In addition, the free hydrochloric acid radicals will also cause the reactants and products to melt or even burn.

Method used

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  • Solid phase synthesis method by gas stream to increase efficiency and continuous microwave radiation, and apparatus therefor

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Experimental program
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Effect test

Embodiment 1

[0016] exist figure 1 Among them, the feeding tank (1), the feeding drum (11) is installed at the bottom of the feeding tank, the feeding tank is connected with the front end of the reaction chamber (3) through the feeding drum, and the microwave source (2) is installed on the upper part of the reaction chamber. A conveyor belt (5) for horizontal mechanical movement is built in the cavity, an output microwave suppressor (6) is installed at the end of the reaction cavity, and an exhaust port (4) is arranged on the upper part of the reaction cavity before the output microwave suppressor. The conveyor belt is composed of non-absorbing microwave, dense microporous, and 200°C-resistant air-permeable mesh belt. The edge of the conveyor belt is closely matched with the air supply groove (12) of the lower trough. The conveyor belt is driven by the driving wheel (9). The conveyor belt passes through the output microwave suppressor and then reacts. Cavity, the product tank (7) is instal...

Embodiment 2

[0017] Embodiment 2. synthetic trace element amino acid chelate (complex)

[0018] 1. Grind methionine and ferrous sulfate to 180 mesh respectively, mix methionine and iron ions evenly at a molar ratio of 1:1 or 1:2, put them into the feeding tank, adjust the thickness of the material to 1cm, and open the gas valve after the conveyor belt spreads the material , turn on the microwave switch, and at the same time, the vacuum pump sucks out the reaction gas, react for 12 minutes, and the conveyor belt transports the reaction product to the product tank, which is the product, and the product chelation rate can reach 91%.

[0019] 2. Glycine and ferrous sulfate are crushed to 180 mesh respectively, glycine and iron ions are uniformly mixed at a molar ratio of 1:1 or 1:2, put into the feeding tank, adjust the thickness of the material to 1cm, and open the gas valve after the conveyor belt spreads the material , turn on the microwave switch, and at the same time, the vacuum pump suck...

Embodiment 3

[0022]Example 3. Synthesis of oligosaccharides

[0023] 1. Add 15% water and a small amount of heteropoly acid to the glucose powder, mix evenly, put it into the feeding tank, adjust the thickness of the material to 1.8cm, after the conveyor belt spreads the material, open the compressed air valve, turn on the microwave switch, and react for 12 minutes , The conveyor belt transports the reaction product to the product trough, cooling and crushing is the product, and the oligosaccharide content can reach 82%.

[0024] 2. Add 10% water and a small amount of heteropoly acid to the sucrose powder, mix evenly, put it into the feeding tank, adjust the thickness of the material to 1.8cm, after the conveyor belt spreads the material, open the gas valve, turn on the microwave switch, and the vacuum pump sucks out the reaction at the same time Gas, react for 12 minutes, the conveyor belt transports the reaction product to the product tank, cools and pulverizes to obtain the product, and...

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Abstract

The invention is solidoid composition reaction of airflow potentiating continuous microwave radiation and the equipment. It relates to microwave radiation solidoid composition technology field. The method is: in the microwave energy field, the reacting materials are radiated continuously by the microwave on the deferent strip, the jet vertical airflow potentiates through deferent web to solidoid compose the reacting materials. The equipment comprises a reacting chamber with a plurality of microwave resources, a deferent strip carrying the reacting material and moving horizontally, the airflow deferent strip web in the reacting chamber to implement vertical potentiating and continuous microwave radiation soldoid composition reaction, the exhausting mouth recycling the gas. The equipment can make the microwave radiate the materials evenly, prevents the coking reaction caused by side-product strong acid and partial heat accumulation, lowers the cost, increases the reaction speed and improves the purity of products and composition efficiency of microwave.

Description

technical field [0001] A gas flow synergistic continuous microwave radiation solid-phase synthesis reaction method and device relate to the technical field of gas flow-carrying synergistic microwave radiation solid-phase synthesis in a microwave energy field. Background technique [0002] The heating of matter by microwaves starts from the molecules of the matter, which is called "internal heating". Matter in nature is composed of a large number of dipoles that are positively charged at one end and negatively charged at the other end. In the natural state, the dipoles move and arrange chaotically. When the medium is in the electric field, the randomly oriented dipoles will have the same orientation according to the direction of the electric field. When the direction of the electric field changes hundreds of millions of times per second, the orientation arrangement of the dipoles in the electric field will also change rapidly, resulting in intermolecular Collide with each ot...

Claims

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Application Information

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IPC IPC(8): B01J19/12
Inventor 乐国伟施用晖王立宽
Owner JIANGNAN UNIV
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