The design pressure of stainless steel pressure vessel is -0.10.4MPa, the design temperature is 100e, the medium used is vinyl chloride, steam, compressed air, the wall thickness of the cylinder is 14mm, the wall thickness of the head is 16mm, and the diameter of the cylinder is 3200mm. The cylinder material is austenite 0Cr18Ni9. After some reason, the cylinder material is replaced by imported Japanese JIS304. The head is made of domestic 0Cr18Ni9 steel plate. The equipment is designed according to a type of separation container.

From the calculation of the internal pressure strength, the primary film stress caused by the internal pressure is much lower than the yield strength of the material, that is, the cylindrical material is completely in the elastic range, and the strength damage is never possible. From the temperature of use, the maximum operating temperature cannot be greater than 100e, which is far from the creep limit.

The original design of the equipment is equipped with a layer of propulsion mixing. After being put into use, a layer of agitation is added, and the power is 18.5 kW. From the operation of the equipment, the support of the transmission system of the equipment is very stable, the shaft runs relatively smoothly, the amount of shaking is not large, and the cylinder The body is fixed with 4 fixing bolts, and the overall vibration of the equipment is not large, and it is unlikely to cause cracks due to vibration. Whether the amount of acid in the pump reaches the specified liquid level, the above conditions can be used to start the pump, and observe whether the pump is abnormal. When you want to stop the pump, follow the operating procedures. If it is a long-term parking, open the large cover after the acid is applied, remove the impeller, thoroughly clean it with water, wipe it dry, and then apply oil for assembly. If it is a regular spare, it should be driven once per shift after parking to avoid the impeller. Rust with the conical distribution sleeve.

The maintenance of the pump in operation is mainly to strengthen the inspection and strictly control the process indicators. Always observe meter readings, acid level, pump intake, acid, exhaust, bearing temperature, mechanical seal leakage, and pump vibration and noise. The inlet pressure of the pump shall not be lower than 200Pa; the inlet temperature shall not be higher than 30e; the acid inlet temperature shall not be higher than 25e; the discharge temperature of the pump shall not be higher than 50e; the temperature of circulating acid cooling water is generally not higher than 20e.

The bearing temperature of the pump is not more than 35e; the purity and water content of chlorine should be checked and analyzed frequently, the purity is not less than 90%, the water content is not higher than 3@10-4; the concentration of circulating acid is measured once per shift, and its mass fraction Not less than 94%, the concentration should not be changed regularly, some high-concentration new acid should be replaced regularly; the bearing should be filled with grease once a month, and each shot is injected with 1 shot at each end to squeeze dirty oil into the fuel tank, which will be dirty during overhaul. The oil is washed away.

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