The inspection work includes setting up scaffolding from bottom to top in the cold box and entering the cold box to check the specific damage to the piping. The liquid-air return pipe of the crude argon tower was bent and deformed, and the RTD cable on the liquid-air pipe was disconnected, and the safety valve pipe of the liquid-air steam of the crude argon tower was deformed and extruded together with the safety valve pipe of the condenser of the fine argon tower. The fine argon tower evaporator does not condense gas and the blow-off tube is disconnected from the tower root. Fine argon tower evaporator liquid nitrogen export pipe deformation large, liquid argon metering pipe argon gas return to fine argon tower pipe deformation serious. Cold box inflatable tube in the middle of the bending tilt, the main tower and the top of the rough argon tower tie rod is obviously loose, the main change of cold box and the main cold box between the bulkhead is frozen crack. The air separation equipment overhaul workers then carried out specific overhaul work based on the damage inspected and the contractual technical agreement.
DEAR Air Separation small air separation unit, large air separation unit and liquid air separation plant technical team has rich experience in cold box overhaul work to ensure the smooth and safe operation of large air separation units and the output of small air separation unit products.
