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Microwave chemical reactor

A chemical reactor and microwave technology is applied in the field of atmospheric pressure chemical reactors to achieve the effects of convenient loading and unloading, reducing microwave leakage and facilitating feeding

Active Publication Date: 2009-11-18
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the microwave chemical reactors reported in the literature have obvious defects in three aspects: ① The output power is designed by the microwave oven manufacturer (hereinafter referred to as the default power), and the average output power is changed by adjusting the on and off time of the microwave output
However, the currently commercially available microwave chemical reactors are difficult to fully meet the above requirements. For this reason, we focus on improving the above three defects, and design a plan for the transformation of household microwave ovens. The modified microwave chemical reactor has obviously eliminated these three aspects. Defects in aspects, its function can meet the above eight requirements

Method used

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Embodiment 1

[0022] Microwave chemical reactors operate in constant power mode. Operate according to the specific embodiment, and the system for measuring is 350ml distilled water. After the instrument was energized, the rotating speed of the mechanical agitator (2) was adjusted to be 350rpm, and the constant power value of the microwave chemical reactor was as follows under the output voltages of different levels of the voltage regulating transformer (16):

[0023] Voltage regulating transformer(16)

[0024] 205±1

Embodiment 2

[0026]Microwave chemical reactors operate in constant power mode. Operated according to the specific embodiment, the measuring system is 350ml of 20% sucrose solution. After the instrument is powered on, adjust the rotating speed of the mechanical stirrer (2) to be 350rpm. After the system boils, use a 5ml pipette to draw the 70mg / 5ml citric acid aqueous solution and insert it from the upper opening of the glass straight condenser tube (7) into the 19 # After grinding port A (9) to a horizontal position, add the above-mentioned citric acid aqueous solution to the system, and take out the pipette. Let the system react under constant power and boiling state. The constant power value and the reaction rate constant of the microwave chemical reactor under different levels of output voltages of the measured voltage regulating transformer (16) are as follows:

[0027] The output voltage / V of voltage regulating transformer (16)

Embodiment 3

[0029] The microwave chemical reactor is regulated to keep the system in a constant temperature mode. The measurement system is 350ml distilled water. Operate according to the specific embodiment, but do not add reactants, only check the temperature fluctuation range when the high voltage is set to 185V and the low voltage is set to 0V in this technology (the difference is the maximum value), and the temperature of the control system is 60°C. Stirring speed: 788±5rpm. After three repeated measurements, each measurement was kept at a constant temperature for more than 1 hour, and the power variation range: 750±5~0J·s -1 , the maximum temperature fluctuation range is ±0.7℃.

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Abstract

The invention relates to a microwave chemical reactor suitable for various laboratories. By modifying a household microwave oven, the reactor mainly comprises two parts, namely a measurement and control part for various parameters, and a power supply instrument part of a chemical reactor and the microwave chemical reactor. The microwave chemical reactor has the following performance: power is continuously adjustable; different levels of constant power is output; constant temperature is controlled; a mechanical agitator can adjust the speed and display the stirring speed; the microwave power is displayed, energy in the furnace chamber of the microwave oven is evenly distributed, and all the parameters in the reaction process are sampled and recorded by a computer.

Description

technical field [0001] The invention relates to an atmospheric pressure chemical reactor which uses microwaves to provide energy to the system. Background technique [0002] Microwaves can dramatically increase the speed of certain chemical reactions. At present, most of the chemical reactions reported in the literature using microwave technology are completed in commercial household microwave ovens, which are low in cost and small in size and are suitable for various laboratory applications. However, the microwave chemical reactor reported in the literature has obvious defects in three aspects: 1. the output power is designed and finalized by the microwave oven manufacturer (hereinafter referred to as the default power), and the average output power is changed by adjusting the on and off time of the microwave output. That is to say, the default power is output during the "on" period of the microwave output; and zero power is output during the "off" period. The different av...

Claims

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Application Information

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IPC IPC(8): B01J19/12
Inventor 顾浩朱方蒋海燕陈建梅刘小华高国生
Owner 溧阳常大技术转移中心有限公司
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