Seeking advice on selecting pumps that are resistant to vacuum, acids, and high temperatures – urgent! ! !
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Seeking advice on selecting pumps that are resistant to vacuum, acids, and high temperatures – urgent! ! ! The existing medium is cyclohexanecarboxylic acid, containing small amounts of hydrochloric acid, benzoic acid, etc., and it needs to be transported using a pump. The specific operating conditions are as follows: temperature of 130–160°C, pressure of -0.085–-0.095 MPa. I would like advice on the selection of a suitable pump; thank you!
Acid resistance is essential, and it is also a pump with a large net positive suction head
Your negative pressure determines that a positive displacement pump is essentially the appropriate choice; your acid resistance and the requirement of temperatures above 130°C mean that a positive displacement pump lined with polytetrafluoroethylene can be used
160 degrees, with vacuum – use an imported fluoroplastic-lined pump
The installation location is the most crucial; let’s communicate via in-station messages.
Regarding the material of the pump, plastic materials experience a significant decline in strength at high temperatures; the maximum allowable temperature is generally no more than 120 degrees, with some materials allowing up to 150 degrees at most. Your current maximum temperature is 160; non-metallic pumps cannot be used. Consider materials that can withstand high temperatures and acids, such as 20 alloy, Hastelloy, or zirconium alloys.
At 160 degrees, fluorine lining is not an option at all – it simply won’t work. Imported ones are not necessarily better than domestic fluoroplastics
Whether it’s PTFE or F40, it simply won’t work at such temperatures without negative pressure; even the inlet side doesn’t work. I do have a new material that requires detailed consultation via QQ327606198
Whether it’s PTFE or F40, it simply won’t work at such temperatures without negative pressure; even the inlet side doesn’t work. I do have a new material that requires detailed consultation via QQ327606198
The safest approach is to use 304 stainless steel, which can achieve this level of vacuum. For details, please call.