This regulation stipulates the safe operation content and requirements of the plate-type heat exchanger for extraction and electrowinning. This procedure is applicable to the work of extraction and electrowinning plate heat exchangers in the wet smelting workshop. 2 content 1. Before going to work, you must wear protective helmets, overalls, protective shoes, protective gloves, protective glasses and other labor insurance products. Check if the pipeline connection meets the requirements before starting, and if the drain (sewage) valve is closed. After running slowly, open the inlet and outlet valves of the cold medium and then slowly open the inlet and outlet valves of the heat medium, all of which should be slowly boosted and warmed up. In order to stabilize the system operation, the amount of fluid on both sides can be adjusted synchronously (if there is an intermediate partition, both sides of the partition should be included). 2, must be very carefully exhausted when filling the liquid. According to the indication of inlet and outlet pressure and temperature, adjust the valve to the set process parameters. 3. During the operation, the pressure should be stable to avoid high and low. Carefully observe the operation of the heat exchanger. Such as (temperature, pressure, outward leakage, etc.) 4. In the course of operation, if there is a slight leak, the compression size can be reduced by 2~3mm in the state of pressure relief before running. 5. Stop the heat medium inlet valve first, then close the cold medium inlet valve, all valves Closing should be done quickly. If the machine is out of service for a long time, the valve at the lowest point of the pipe should be opened to drain the residual liquid in the equipment. 6. If leaks, leaks, and liquids are found, they should be reported and disposed of in time. 7. The operator should wear gloves to prevent scratches. Be careful not to scratch the gasket when removing the plate. When boosting, the air inside the equipment should be discharged first. The overpressure test should not be carried out. It is forbidden to tighten the bolt when there is pressure in the equipment. 8. Mechanical cleaning and chemical cleaning should be carried out as required. 9. When working with heat exchangers or steam systems, care should be taken to prevent steam burns. 10. Strictly abide by the system of stopping the operation of water, steam, wind and electricity. Puyang Shangyi Decoration Material Co., Ltd. , https://www.pysydecoration.com
Safety operation procedures for plate heat exchangers in mineral processing plants
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