Installation Of Reaction Kettle Meets Explosion-proof Requirements

(1) Installation location: The reaction vessel should be installed in a high-pressure operating room that meets explosion-proof requirements. When multiple reaction vessels are equipped, they should be placed separately, and a safe explosion-proof wall should be used to separate each two vessels. Each operating room should have a passage and outlet to the outside, and good ventilation should be ensured when explosive media is present.
(2) After opening the packaging, check for any damage to the equipment. Install the equipment according to the structural diagram based on the equipment model, and verify the components provided according to the packing list. If the heating method is thermal oil electric heating, please purchase the corresponding model of thermal oil according to the operating temperature (note: thermal oil must not contain moisture) and add it. When adding, open the oil filling port on the upper part of the jacket and the oil level port on the upper part of the jacket. Add oil through the filling port until the oil level flows out; Twist the oil level port tightly afterwards, do not twist the oil filling port tightly to avoid pressure.
(3) Installation and sealing of kettle body and kettle cover: The kettle body and kettle cover are in line contact with the circular arc surface using gaskets or conical surfaces, and are tightly pressed against each other by tightening the main nut to achieve a good sealing effect. When tightening the nut, it must be diagonally symmetrical and gradually tightened multiple times with even force. It is not allowed for the kettle cover to tilt to one side to achieve a good sealing effect. When tightening the main nut, do not exceed the specified tightening torque of 40-120N M range, to prevent the sealing surface from being crushed or overloaded with wear. Special care should be taken for the sealing surface. Before each installation, use a relatively soft paper or cloth to wipe the upper and lower sealing surfaces clean. Pay special attention not to scratch the sealing surfaces of the kettle body and lid. If operated reasonably, it can be used more than tens of thousands of times. After the sealing surface is damaged, it needs to be reprocessed and repaired to achieve good sealing performance. When disassembling the kettle cover, it should be slowly lifted up and down to prevent the sealing surfaces between the kettle body and the kettle cover from colliding with each other. If gaskets (PTFE, aluminum, copper, asbestos, etc.) are used for sealing, a good sealing effect can be achieved by tightening the main nut.
(4) The installation of valves, pressure gauges, and safety valves achieves a sealing effect by tightening the positive and negative nuts. The circular sealing surfaces at both ends of the connection must not rotate relative to each other. When assembling all screw connections, lubricant or graphite mixed with oil must be applied to prevent them from biting. The use of valves: Needle valves are line sealed, and good sealing performance can be achieved by gently rotating the valve needle and compressing the sealing surface. Excessive force is prohibited to avoid damaging the sealing surface.
(5) After the equipment is installed, introduce a certain amount of nitrogen and maintain pressure for 30 minutes to check for any leaks. If any leaks are found, use soap foam to locate the leakage points in the pipelines and pipe openings. After finding them, release the gas and tighten them. Then, conduct a nitrogen pressure test again to ensure that there are no leaks before starting normal operation.
(6) When cooling down, water can be used for internal cooling through the cooling coil. Rapid cooling is prohibited to prevent excessive temperature stress from causing cracks in the cooling coil and kettle body. When the temperature inside the kettle exceeds 100 ℃ during operation, the water jacket between the magnetic stirrer and the kettle cover should be filled with cooling water to ensure that the water temperature is less than 35 ℃, in order to prevent demagnetization of the magnetic steel.
(7) Safety device: It adopts a positive arch type metal blasting disc, made of stainless steel, manufactured according to the national standard GB567-89 "Technical Conditions for Arch Type Metal Blasting". It has been tested before leaving the factory and cannot be adjusted arbitrarily. If it has already exploded, it needs to be replaced again. The replacement period is determined by the using unit according to the actual situation of the unit. For those that exceed the calibrated bursting pressure of the bursting disc but have not exploded, they should be replaced. It is best not to exceed 80% of the lower limit pressure of the bursting disc when frequently used. When replacing, attention should be paid to the convex surface of the bursting disc facing upwards.
(8) After the reaction is complete, first cool down and release the gas inside the kettle through the pipeline to reduce the pressure inside the kettle to atmospheric pressure. It is strictly prohibited to disassemble under pressure. Then, symmetrically loosen and remove the main bolts and nuts, and carefully remove the kettle cover (or lift the kettle cover) and place it on the bracket. During the disassembly process, special attention should be paid to protecting the sealing surface.
(9) Cleaning inside the kettle: After each operation, use cleaning solution (be careful not to corrode the main material when using cleaning solution) to remove the residue on the kettle body and sealing surface. It should be cleaned regularly and kept clean. Hard substances or rough surfaces are not allowed to be used for cleaning.