What kind of valve is suitable for venting in catalytic cracking?
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Our unit uses three-eccentric butterfly valves for torching, but there is constant leakage. Would an eccentric rotary valve be a good option?
May I ask about the temperature, pressure, and diameter of the valve used for the torch? Thank you
I think using solenoid valves is better because: 1. Solenoid valves are more airtight； 2. It is flexible and quick to turn on or off, allowing for fast response to emergencies
Using imported zero-leak FISHR valves to ensure your satisfaction means a higher price
For the application mentioned by the poster, I assume the operating conditions are quite harsh; high requirements are placed on sealing performance, and the composition of the medium is also complex. If both butterfly valves and ball valves experience leaks, it is advisable to consider disc valves. *an101@gmail.com
1. Ordinary gate valves or sulfur-resistant gate valves can be used. . . Manually. . . 2. If higher automation is required, solenoid valves should be used, and the valve core must be resistant to sulfur corrosion and acid corrosion. . . :Lol, 3. Pneumatic control valves and the like can also be used. . . This post was last edited by sunjx on 2009-2-5 09:37.]
The three-eccentric butterfly valve used by the poster is quite advanced in modern technology. If there is a leak, it would be advisable to check whether the material of the valve meets the requirements of the medium being handled (taking into account factors such as temperature, corrosion, and impurity content)； Additionally, check whether the actuator of the valve matches the parameters required by the valve. (For reference)
The DCC I used before was equipped with pneumatic disc valves
DCC has also been used on upper floors; I used to work with DCC-2, and now I’m involved in MIP. In both of these processes, butterfly valves are used, which provide excellent sealing. Perhaps there is a problem with your instrument regulators. It’s important to note that if the flare valve doesn’t close properly, it leads to energy waste, which means cost losses~~~ If domestic products aren’t suitable, then use imported ones
Could the poster provide the temperature and pressure parameters?
A triple-eccentric leak-free butterfly valve; the actuator should have sufficient torque to enable precise control and rapid opening, and an electro-hydraulic actuator can also be considered.