Positive power control method for multiple magnetic-control tube microwave chemical reactor
A chemical reactor and power control technology, applied in the field of active power control of multi-magnetron microwave chemical reactors, can solve problems such as uneven changes, burning of reactant products, and limiting the stable change of microwave output power.
Active Publication Date: 2008-08-06
SICHUAN UNIV
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Problems solved by technology
But in this way, the microwave output power is in a state of sudden rise and fall, not a smooth change process
Within 10 seconds of the magnetron working, the instantaneous power is still 1000W, which may also trigger "thermal runaway", resulting in the burning of reactants or products
For the consideration of the life of the magnetron, the time interval of the alternate work of the magnetron should not be too short, so the smooth change of the microwave output power is limited
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[0028] Such as figure 1 As shown, a programmable active power control device is installed in the microwave chemical reactor of n magnetrons, and the single-chip microcomputer 101 is respectively connected to n magnetrons 103 through n relays 102, and the control parameters of the chemical reaction can be written into Program the single-chip microcomputer program. The single-chip microcomputer makes n relays work in different combinations of "on" and "off" through the control circuit, and controls n magnetrons to be in different working states. When the temperature of the chemical reaction system rises sharply or microwave energy Before the reflection mutation comes, actively reduce the number of working magnetrons to m, m
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The active power control method for multiple magnetron microwave chemical reactor features that programmable active power controller is set in the microwave chemical reactor and connected separately to the magnetrons through relays, so that the magnetrons may operate in different on-off states under the control of the chemical reaction controlling program. In the chemical reaction system and before abrupt temperature raise or suddenly changed microwave energy reflection, the number of magnetrons in use is reduced actively for safe operation of the system. After that, the number of magnetrons in use is increased gradually to raise the power of the microwave chemical reactor. In this way, the output power of the microwave chemical reactor is controlled for smooth change.
Description
technical field [0001] The invention relates to an active power control method of a multi-magnetron microwave chemical reactor, which belongs to the field of microwave chemical reaction. Background technique [0002] Compared with traditional steam, oil and electric heating methods, microwave heating has the advantages of high efficiency, fast and uniform heating, and can effectively promote the progress of chemical reactions and greatly increase the yield, so it has broad application prospects in the chemical industry. At present, microwave has been practically applied in the field of chemical production, such as drug synthesis, extraction of Chinese medicinal materials and rubber desulfurization. [0003] In the process of microwave heating chemical reaction, in order to make the reaction proceed safely and smoothly, a key issue is how to properly adjust the microwave output power, which has been a difficult problem in the application of microwave chemical reactors at home...
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IPC IPC(8): B01J19/12H05B6/68
Inventor 黄卡玛刘长军闫丽萍
Owner SICHUAN UNIV
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