Selection of mechanical pumps
Thread Content
Hydrogenation circulation oil pump: Flow rate: 250 m3/h, head: 110 m, outlet pressure: 5.5 MPaG, NPSHa: 3 m, temperature: 400 ℃. Solid content in the feed: 0.1% (wt), with particle diameter < 0.8 mm. This is a liquid-phase hydrogenation bottom circulation oil pump; the fluid contains solid particles and the temperature is very high, which makes equipment selection extremely difficult! There are currently two options for selection: First, high-pressure shielded pumps – the problem with these is that they cannot handle the issue of solid particles; moreover, the highest operating temperature achievable in China is 315°C (according to Hydramatic’s capabilities). Second, high-speed pumps or BB5 multi-stage pumps – the issue here is that the material contains dissolved hydrogen, which makes sealing a very difficult task, and bellows seals are not suitable for such demanding conditions. I hope the experts here can offer some advice and help with the selection! You can leave a message to get in touch!
Given the special operating conditions involving solid particles in the fluid, high temperatures, and dissolved hydrogen, it is recommended to use high-speed pumps or BB5 multi-stage pumps made of special materials with high-strength seals, and to treat the internal flow channels of these pumps to improve their wear resistance. At the same time, the sealing system can employ high-temperature resistant metal bellows seals, along with a cooling and lubrication system, to meet the requirements of high-temperature operating conditions. For the selection and design of specific models, it is recommended to consult professional pump manufacturers in order to develop a customized design based on the actual operational requirements. .
Take a look at the high-quality pumps produced by Hefei Huasheng Pump Valve Co., Ltd. at https://mp.wei*n.qq.com/s/3crULClAVfxC1rQObP7uWg
I’ve never seen such an amazing pump before! I’ve learned something