12

2021

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03

The structure and principle of high pressure reactor

Author:


1. The high-pressure reactor is composed of reaction vessel, stirrer and transmission system, cooling device, safety device, heating furnace, etc.

1. The high-pressure reactor is composed of reaction vessel, stirrer and transmission system, cooling device, safety device, heating furnace, etc.

1. The kettle body and kettle cover are made of stainless steel. The kettle body is connected with flanges through threads, and the kettle cover is a flat plate cover. The two are fastened and connected by main bolts and nuts that are evenly distributed in the circumferential direction.

2. The main sealing port of the autoclave adopts A-type double-line sealing, and the remaining sealing points adopt the sealing form of the arc surface and the plane, the arc surface and the arc surface in line contact, relying on the high precision and smoothness of the contact surface to achieve Good sealing effect.

3. A barrel-shaped silicon carbide furnace core is installed outside the kettle. The electric furnace wire passes through the furnace core, and its end passes through the lower part of the furnace shell, and is connected to the controller through a wiring stud and a rubber sheathed cable.

4. The lid of the kettle is equipped with a pressure gauge, a bursting membrane safety device, a vapor-liquid phase valve, a temperature sensor, etc., so that it is easy to know the reaction situation in the kettle at any time, adjust the ratio of the medium in the kettle, and ensure safe operation.

5. The coupling is mainly composed of a pair of inner and outer magnetic rings with strong magnetic force, with a pressure-bearing spacer in the middle. The agitator is driven by a servo motor through a coupling. Controlling the speed of the servo motor can achieve the purpose of controlling the stirring speed.

6. The upper part of the spacer is equipped with a speed measuring coil. When the integrated stirrer and the inner magnetic ring rotate, the speed measuring coil generates an induced electromotive force. The electric potential corresponds to the stirring speed. The electric potential is transferred to the tachometer to display the stirring Rotating speed.

7. A cooling water jacket is installed between the magnetic coupling and the kettle cover. Cooling water should be passed through when the operating temperature is high, and the magnetic steel temperature is too high to demagnetize.

8. The bearing adopts stainless steel bearing or high-strength electrochemical graphite, which is resistant to abrasion and has a long maintenance period

Second, the controller

1. The shell adopts a standard aluminum alloy case, and the upper cover can be drawn back, which is convenient for maintenance and repair. The panel is equipped with a temperature digital display meter, a voltmeter, a tachometer, and a control switch and adjustment knob, etc., for the operator to operate and use.

2. Electrical principle: The electronic components of the stirring control circuit are assembled on a circuit board, and the double closed-loop control system is adopted. It has the characteristics of high speed control accuracy, stable speed, strong anti-interference ability, and has the perfection of limiting overspeed and overcurrent. With the protection function, adjusting the “speed control” knob can change the DC voltage of the DC motor, thereby changing the speed of the motor, and achieving the purpose of controlling the stirring speed.

3. The heating circuit adopts solid-state relay (commonly known as voltage regulating block) to adjust the voltage, which makes the heating circuit simple. Just adjust the "voltage regulation" knob to adjust the heating power. At the same time, the control part of the heating circuit is equipped with an intelligent digital display. The heating temperature can be adjusted at will according to the requirements of the process, and the temperature control accuracy is extremely high.

4. All external leads are led out from the terminal block in the controller through the waterproof connector from the rear panel.

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