Design, construction and debugging of efficient and controllable online microwave reaction system

A microwave reaction system and microwave reaction technology, applied in the preparation of test samples, measuring devices, instruments, etc., can solve the problems of wide distribution of product composition, inability to accurately reflect the microwave cracking reaction characteristics of biomass, and complexity. Achieve simple structure, improve work efficiency and flexibility, and be easy to implement

Pending Publication Date: 2022-03-18
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, due to the complex reaction mechanism of biomass samples in the microwave pyrolysis reaction process, and the wide and complex distribution of product composition, and as the reaction progresses, the product compositio

Method used

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  • Design, construction and debugging of efficient and controllable online microwave reaction system
  • Design, construction and debugging of efficient and controllable online microwave reaction system
  • Design, construction and debugging of efficient and controllable online microwave reaction system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0045] Example 1

[0046] A highly efficient and controllable online microwave response system, such as figure 1 As shown, including microwave reaction units, two gas path units, and gas chromatographic analysis units sequentially connected;

[0047] The bip gas path unit includes parallel all-line heating air and cold trap liquefied air paths;

[0048] The microwave reaction unit is heated with the full line, and the cold trap liquefied gas path is connected by a first line with a steering valve;

[0049] The gas-chromatographic analysis unit is connected to the full line, and the cold trap liquefied air path is connected by a second line with a steering valve.

[0050] The microwave reaction unit: figure 2 As shown, including chamber 1, microwave generator 4, shielding device and PLC intelligent control system; the chamber is provided, an input power monitoring device, a reflected power monitoring device; the PLC intelligent control system passes a probe device Input power monit...

Example Embodiment

[0058] Example 2

[0059] Taking microwave heat, it is carbon material as an example, and the microwave reaction system according to Example 1 is picked up, and the product produced by the reaction is analyzed, the steps are as follows:

[0060] According to the requirements, the carbonaceous material is controlled to microwave auxiliary thermal solution after microwave power and reaction temperature;

[0061] At any time carried out at any time, real-time chromatographic online analysis can be performed on the generated product, and can switch the whole line heating line and the cold trap line to each component transient analysis (C1-C5 and C6 or more components). And transient analysis of low boiling products (C1-C5).

[0062] During the reaction, the valve is rotated to the entire line of heating the air, and the product is thermally heated and maintaining the gas state into the chromatography to improve the accuracy of the product component analysis, and the dynamic changes of...

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Abstract

The invention relates to the technical field of multifunctional microwave reaction systems, in particular to a microwave reaction system capable of performing all-component online analysis and gas-liquid separation online analysis on reaction products. The microwave reaction system provided by the invention comprises a microwave reaction unit, a double-gas-path unit and a gas chromatographic analysis unit which are connected in sequence, the double-gas-path unit comprises a full-line heating gas path and a cold trap liquefied gas path which are connected in parallel; the microwave reaction unit is connected with the whole-line heating gas path and the cold trap liquefied gas path through a first pipeline with a conversion valve; and the gas chromatographic analysis unit is connected with the whole-line heating gas path and the cold trap liquefied gas path through a second pipeline with a conversion valve. According to the microwave reaction system, transient analysis of all components of products with different boiling points and transient analysis of products with low boiling points can be realized, so that the accuracy of product analysis is improved, the working efficiency and flexibility of the microwave reaction system are greatly improved, and the use requirements of multiple application fields are met.

Description

technical field [0001] The invention relates to the technical field of multifunctional microwave reaction systems, in particular to a microwave reaction system capable of performing online analysis of all components and gas-liquid separation of reaction products. Background technique [0002] Microwave heating has the advantages of uniform heating, high efficiency, selective heating, easy control, fast response, and less side reactions. It was widely used in household microwave ovens from 1970 to 1980, and was applied to material processing and microwave chemistry in 1990. Reactions, including mineral processing, reduction of metal oxides, leaching, sintering and fabrication of ceramic materials, etc. [0003] In addition, in recent years, the rapid development of microwave-assisted pyrolysis technology has made microwave heating play an increasingly important role in the treatment of waste plastics, rubber waste, sewage sludge, biomass, and polluted soil. [0004] Compared...

Claims

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Application Information

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IPC IPC(8): G01N1/44G01N30/06G01N30/68
CPCG01N1/44G01N30/06G01N30/68
Inventor 刘博男赵俊马望京
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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