Catalytic cracking slide valve packing leakage

The leakage problem of catalytic cracking slide valve packing may be related to factors such as packing selection, stuffing box structure and operating precautions. Here are some suggestions to help you avoid slide valve packing leaks: 1. Filling selection: Select fillers that are suitable for catalytic cracking operations, have good wear resistance and corrosion resistance, and can provide high catalytic activity and selectivity. 2. Stuffing box structure: The stuffing box should have good sealing performance to ensure that the packing will not leak due to external pressure or temperature changes. In addition, the stuffing box should also be designed with a reasonable exhaust system to prevent gas from accumulating in the stuffing and causing the slide valve packing to leak. 3. Precautions during operation: During operation, the slide valve packing must be maintained and inspected, and the accumulation in the stuffing box must be cleaned regularly to avoid clogging the slide valve packing. In addition, pay attention to controlling the temperature and pressure fluctuations during the catalytic cracking process to reduce the impact on the slide valve packing. 4. Regular maintenance: Regularly inspect the slide valve packing and stuffing box, check the valve disc for wear and corrosion, and replace failed parts to ensure normal operation. All in all, correct selection of packing, reasonable design of stuffing box structure, strict compliance with operating procedures and precautions, and regular maintenance of equipment can effectively reduce the occurrence of slide valve packing leakage problems. If leakage still exists, it is recommended to contact professional technicians for further communication and problem solving. .