Automatic control system for pressurization micro reaction experiment device

Abstract

The invention discloses an automatic control system for a pressurization micro reaction experiment device, which includes a mass flowmeter, a pressure transmitter, a temperature sensor, a six-way valve, as well as a solid state relay used for controlling the electrification / diselectrification of an electric heating furnace, an electromagnetic valve for switching valve position of the six-way valve, a monitoring computer, an RS485 / 232 converter, an analog quantity input unit and a programmable logic controller, wherein the analog quantity input unit is connected with the mass flowmeter, the pressure transmitter and the temperature sensor and used for acquiring flow, pressure and temperature data; and the programmable logic controller is connected with the solid state relay and used for controlling the solid state relay, and is also connected with the electromagnetic valve and used for controlling the valve position switching of the six-way valve. The automatic control system can be used for automatically completing most operation and data detection during the pressurization micro reaction experiment, brings convenience for experimental personnel for experiment operation and data logging, facilitates simplifying the experiment procedures and greatly improves the accuracy of experiment data.

Description

technical field [0001] The present invention relates to an automatic control system, more specifically, relates to an automatic control system for a pressurized micro-counter experimental device. Background technique [0002] The pressurized micro reaction device is widely used in many fields such as chemical production, scientific research and teaching. Its core equipment is a fixed bed tubular reactor. During the reaction process, it is necessary to observe the changes of reaction temperature and reaction pressure at any time. The reaction products are usually detected by chromatography. for analysis. Since this kind of reaction generally takes a long time (more than 24 hours), and requires sampling and chromatographic analysis at regular intervals, the method of manual operation has great disadvantages. Contents of the invention [0003] Aiming at the above-mentioned prior art, the present invention provides an automatic control system for pressurized micro-reactor exp...

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Problems solved by technology

[0003] Aiming at the above-mentioned prior art, the present invention provides an automatic control system for pressurized micro-reactor experimental device. The control system can not only monitor the reaction temperature and reaction pressure in real time, but also automatically switch the six-way valve for on-line chromatographic analysis. Overcoming the shortcomings of manual operation, it is beneficial for the experimenters to grasp the reaction progress more accurately and control the reaction process. At the same time, it also greatly reduces the labor intensity of the experimenters and saves a lot of time.

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