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The introduction of cladding plate reactor (3/3)

By WHGCM September 28th, 2023 106 views
2) Ways to avoid fire and explosion accidents in reactors and stills:
A) Strengthen safety education and training and on-site safety management.
B) Strengthen the maintenance, prevent the formation of explosive mixtures, clean up the scaling in equipment pipelines in time, control the flow rate of incoming and outgoing materials, use explosion-proof electrical equipment, and be well grounded.
C) Strictly operate in accordance with the safety operation regulations and post-operation safety regulations.
In the distillation,  the parameters including the temperature, pressure, feed amount, and reflux ratio need monitoring. When heating with steam, the opening of the valve must be appropriate to prevent the material from being too large or too strong to evaporate rapidly and the system's pressure to rise sharply.
Always pay attention to keeping the equipment pipelines of the distillation system working. Or the valve blockage will cause the pressure to rise and cause danger.
To keep the low boiling object or water away from the high-temperature distillation area, the condensed water in the kettle, tower, and auxiliary equipment must be exhausted before the high-temperature distillation system is started to prevent it from suddenly contacting high-temperature materials, causing instantaneous vaporization and pressurization, resulting in spraying or explosion.

3. Prevention and elimination of static electricity in the cladding plate reactor:
1) The cladding plate reactor is used to control the generation of human body static electricity and eliminate human body static electricity. Person loading tanks (sampling, measuring, etc.) must first touch the human body's electrostatic device.
Wear anti-static clothing. grounded. Storage tanks and isolated bodies must be grounded, and the common grounding body can be grounded for lightning protection. Filled with inert protective gas. In the tank, it is filled with nitrogen protection to reduce the nitrogen content in the tank, and no explosive mixed gas can be formed on the oil surface in the tank. Even if electrostatic discharge sparks are generated in the tank, the safety of the storage tank can be guaranteed; the injection method of the reactor medium is controlled.

2) The medium should be injected from the bottom of the storage tank, and try to avoid injecting the medium from the top of the storage tank. If it is missing, the medium should be injected from the top of the storage tank, and the outlet of the pipe should be inserted into the tank to a depth of 200mm from the bottom of the tank; antistatic additives should be added.
The addition of antistatic additives greatly increases the conductivity of the medium, so that the static charge inside the medium cannot accumulate, and will soon leak to the earth through the bridge connection ground.

3) The floating roof of the floating roof tank should be connected to the tank wall. Pipelines and valves, flow meters, filters, pumps, and tanks should be bridged when insulating materials are used or corroded.

4) Install static moderator. After the filter, the static moderator is installed at the position before the fluid enters the storage tank. Avoid mixing and co-transporting water and medium, avoid mixing and co-transporting different media, avoid co-transporting liquid medium, oil gas, and compressed air, dehydrate the storage tank immediately, and pay special attention to dehydration before feeding.

5) Install static eliminator. Install a static eliminator at the end of the pipeline, and inject a charge opposite to the charge in the oil into the pipeline to neutralize the charge and eliminate static electricity.

6) Control the flow rate of the reactor medium. The greater the flow rate, the easier it is to generate static electricity.


Cleaning:

1. After long-term use, the cladding plate reactor will accumulate a large amount of impurities, which not only affects the service life of the reactor but also affects the efficiency of the reactor. Put the reaction valve into the kettle from the exhaust valve. After cleaning most of the residue, pour water into it and stir for about ten minutes.
Only then can the pot be opened to clean the inner wall of the kettle; Sampling valve, at the same time, if the kettle has water, take a small amount of nitrogen;  do not use it. Add 70% absolute ethanol and absolute ethanol to the non-reaction kettle.

2. In order to ensure the strength of the equipment, the anti-corrosion performance, and the cleanliness of the kettle, the cylinder body and the flange should be welded on both sides inside and outside, and it is often simplified as one-side welding on the outside.
After less welding on the inner side, it is not easy for the user to see it from the outside, the reliability of the equipment will decrease, the unwelded inner side will form a gap, and the materials in the kettle will seep into it, but it is hard to clean.
The equipment is deeply corroded and may contaminate the product after falling off. The reducer configures improperly. When the shaft seal has high requirements, such as a mechanical seal, people need to choose a proper reducer. Some manufacturers use cheap worm gear reducers, because the output shaft swings large, and the stirring shaft swings together.
The mechanical seal fails because working conditions cannot be controlled. When the kettle is under pressure, the leakage of the shaft seal is even worse. If the inside of the kettle is flammable, explosive, poisonous, or corrosive medium, it will be even more harmful.

Maintenance and troubleshooting of cladding plate reactors:

1. The reactor should be operated strictly according to the working pressure and working temperature marked on the product nameplate for safety.

2. The reactor strictly abides by the regulations of cooling, oil filling, and ensuring maintenance. When using the valves, the stem needle should turn slowly to press the cover tightly to achieve the sealing effect. Do not use too much force when spinning,  not to damage the sealing surface. The electrical control instruments of the reactor should operate by special personnel, and overload protection facilities should be set up according to regulations.

3. When leakage occurs at the sealing surface, tighten the, and re-grind and polish the sealing surface. Repair and replace the valve stem needle and valve port when there is leakage at the valve. The outer magnetic steel rotates, but the inner magnetic steel does not turn over. When the motor current decreases, notify the supplier and replace the magnetic steel. If there is frictional noise in the magnetic coupling drive, contact the supplier to replace the bearings and bushings.

4. If conditions permit, pass the circulating water through the water jacket of the reactor to cool down (it might not be in use if the operating temperature is not high), and the cooling water is low in and high out.
When hoisting the reactor lid, if the height of the workshop is not high enough, the motor and reducer can be disassembled. When disassembling the motor, loosen and remove the four bolts. Or use the method of removing the reducer to reduce its height.
The operation is to loosen and remove the bolts at the connection between the reducer and the bracket.
Remove the four bolts of the bracket coupling, and take them down together. After the equipment finishes inspected, connect it again.
And turn the fan fin by hand to see if it rotates flexibly, and it can be put into use after there is no abnormal sound (note: the engine oil must be full).

To sum up, as per the above nine aspects, we will have a more comprehensive image of the cladding plate reactor. In the purchase, it will be more targeted. Of course, you can also contact us directly to learn more about this kind of reactor.
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