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بالعربيةWhat are some of the coal slurry dryer safety features?
2025-03-28
What are some of the coal slurry dryer safety features?
Coal slurry dryer in the operation process there are a variety of safety risks, such as fire, explosion, high temperature scalding, mechanical injury, etc., so it is crucial to be equipped with a series of safety protection features, the following are common safety protection features:
Temperature control and over-temperature protection
Temperature monitoring system: High-precision temperature sensors are installed in different parts of the dryer, such as the inside of the drying cylinder, the outlet of the hot air furnace, and the exhaust gas discharge port, etc., to monitor the temperature changes in each key position in real time. These sensors can accurately transmit the temperature data to the control system, and the operator can understand the temperature of the equipment at any time through the display.
Over-temperature alarm and automatic shutdown: When the monitored temperature exceeds the set safety range, the control system will immediately trigger the over-temperature alarm device, emitting sound and light signals to remind the operator to take timely measures. At the same time, if the temperature continues to rise and can not be controlled by means of regulation, the dryer will be automatically shut down to prevent serious accidents such as spontaneous combustion of coal slurry and damage to equipment caused by high temperature.
Pressure monitoring and protection
Pressure sensor: Install pressure sensors in the hot air furnace, drying cylinder and ventilation pipes to monitor the internal pressure changes in real time. Pressure is one of the important parameters reflecting the operating status of the equipment, and abnormal pressure fluctuations may indicate problems such as clogging and poor ventilation of the equipment.
Pressure adjustment and alarm: When the pressure is out of normal range, the control system will automatically adjust the opening of the ventilation valve to balance the pressure. If the pressure continues to be abnormal and cannot be restored to normal, the alarm device will issue an alarm to remind the operator to check the equipment and remove the faults, so as to avoid explosion or damage of the equipment due to high pressure.
Fire and explosion-proof function
Explosion-proof door design: Set up explosion-proof doors in the parts that are prone to explosion hazards, such as drying cylinder and hot air furnace. When an explosion occurs inside the equipment, the explosion-proof door will open automatically to release the explosion pressure, preventing the equipment from rupturing due to the sharp rise in pressure, thus protecting the safety of the operators and the surrounding environment.
Flame-retardant materials and anti-static measures: some parts of the dryer are made of flame-retardant materials to reduce the risk of fire. Meanwhile, anti-static devices, such as grounding conductors and anti-static coatings, are installed in key parts of the equipment to prevent sparks from accumulating due to static electricity, which can trigger coal slurry dust explosion.
Fire extinguishing devices: Equipped with fire extinguishing systems, such as dry powder fire extinguishers and automatic sprinkler devices. When monitoring the signs of fire inside the equipment, the fire extinguishing system can be activated in time to quickly extinguish the fire source and reduce the fire loss.
Mechanical protection function
Protective rails and covers: Protective rails and covers are set up around the transmission parts of the dryer, such as belt conveyor, chain drive, motor, etc., to prevent the operator from accidentally contacting the moving parts and avoiding mechanical injury accidents. The guardrail and shield should have enough strength and stability to withstand certain external impact.
Overload protection device: Install overload protection device on the motor and other power equipment, when overload situation occurs during the operation of the equipment, such as material blockage, mechanical failure, etc. resulting in motor overload, the overload protection device will automatically cut off the power supply and stop the equipment from running, preventing the motor from burning due to overheating.
Electrical safety protection
Leakage protection device: install the leakage protector to monitor the leakage of the electrical system in real time. Once the leakage phenomenon is detected, the leakage protector will quickly cut off the power supply to prevent the operator from being electrocuted and protect personal safety.
Grounding protection: ground the metal shell of the dryer and the metal part of the electrical equipment, when the equipment leakage occurs, the current can be channeled to the earth through the grounding wire, avoiding the equipment shell charged and reducing the risk of electric shock.
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