Selection of inlet and outlet valves for the quench water pump in space furnaces
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Approximately 50 sets of space heating furnaces have been installed in China. The inlet and outlet valves of the emergency cooling water pump in our unit, model P-1703, are ball valves of the track type; however, these valves often fail to close properly, resulting in internal leakage and preventing maintenance of the pump； Gentlemen, do you have any experience with such modifications?
The Belgian company AE-Valves produces forced-seal ball valves, which are a type of valve developed by combining the principles of track ball valves and butterfly valves – specifically, double-eccentric ball valves – and are used as alternatives to track ball valves. You can contact the China office at Wu, 13913161158.
New technology for forced-sealing ball valves: Advanced Engineering Valves in Belgium, a leader in technologies for harsh operating conditions, has developed a new generation of ball valve technology by combining the principles of track ball valves and butterfly valves as well as the wedge-type sealing principle of gate valves – namely the dual-eccentric forced-sealing ball valve. Valves designed for harsh operating conditions; product range: 1/4” ~ 42”, 150# ~ 4500#, -196 °C ~ 800°C. Key technical features: 1. Mechanical forced sealing, reliable two-way shut-off, with zero leakage due to metal seals. 2. During the switching process, the ball does not come into contact with the valve seat, resulting in no friction and thus ensuring a long service life for the seal. 3. Springless design: The forced sealing does not require disc springs for assistance, completely eliminating the risk of valve jamming or sticking caused by spring failure. 4. Valve-free chamber dead zone (single seat, C-type ball): Eliminates the problem of abnormal pressure rise in the valve chamber affecting operational safety ； It solves the problems of cavity polymerization and scaling in traditional valves. 5. Full 360° surface hardening of the valve ball, both on the inside and outside: HVOF coating with chromium carbide, tungsten carbide, etc.; completely seamless for greater resistance to high-pressure scouring and abrasion. 6. Self-cleaning: As soon as the valve is opened, the C-ball immediately loses contact with the valve seat, and the valve chamber and sealing surfaces are scrubbed 360 degrees ； When the valve is closed, the C-ball gradually moves closer to the valve seat, continuously scraping and cleaning the sealing surface of the valve seat until the valve is fully closed. 7. Mounting design – enables online maintenance. 8. True fixed-ball design: low torque, long lifespan. 9. Valve shaft packing with disc spring loading, low dispersion design. 10. The upper and lower bearing design ensures that the packing is not affected by lateral forces; the inner surfaces of the bearings are hardened to guarantee fault-free operation over a long period of time. Advantages: 1. Simple structure with few components, ensuring high reliability. 2. No pins or tracks, thus avoiding potential issues of wear and deformation. 3. There is no need for regular lubricant filling to assist the packing seal; high-pressure on-line lubrication poses safety risks. 4. True angular travel ensures good sealing performance of the valve stem packing. 5. Fast opening and fast closing can be achieved. 6. True fixed-ball design; the ball does not vibrate at high flow rates. 7. The auxiliary actuator cylinder features manual operation on the side of the cylinder, ensuring convenient use. The valves are suitable for applications that require high sealing performance and forced sealing – all applications of ball valves. They are used in dryers, molecular sieve switching valves, hydrogenation units, metering stations, skids, low-temperature methanol washing systems, and liquid nitrogen washing processes. They are also utilized in natural gas processing plants in oil and gas fields, on platforms, in refinery hydrogenation units, in ammonia synthesis plants, as well as in industries related to PP, PE, PO, EO, EG, and MTO. AEV is regarded by a major international oil and chemical company as a provider of solutions to valve-related problems; at the beginning of 2018, it was granted a global framework agreement for use in harsh operating conditions – the only such agreement to date – which is utilized in factories and projects around the world. Feel free to ask! Mr. Wu, AEV China Representative Office: 13913161158, andy.wu@ae-valves.com, www.ae-valves.com
Are there any application cases, especially regarding the quench water used in high-pressure coal chemical processes?