Can a reciprocating vacuum pump be used for vacuum distillation of toluene?
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To distill toluene at a reactor temperature of 60 degrees, can a reciprocating vacuum pump be used to vaporize the toluene from the reaction mixture? If that’s not possible, what other pumps can be chosen besides water ring pumps and Roots pumps? Please give me some advice.
From a security perspective, it’s best not to use it, but its actual performance is quite good, haha.
Dry screw vacuum pumps can also be used; they are better than water ring Roots vacuum systems, but of course their cost is higher as well: lol
It is prone to leakage and unsafe; a water ring pump can be used
After using it here, the results have been satisfactory. The pump has a relatively low power consumption, and there is no issue of water pollution. But what are people’s opinions regarding its safety aspects?
This requires determining the temperature for vacuum distillation based on the process, then establishing the required level of vacuum. Once the vacuum level is known, the performance characteristics of various vacuum pumps can be checked; those that meet the specified conditions can be used. If corrosion is present, measures should be considered to address it.
We use water-jet vacuum units to carry out the distillation and recovery of toluene! Water jet vacuum unit IS80-65-160: Q=50m3/h, H=32m, P=7.5Kw. The pumping capacity of the water jet pump, at 150L/S, is more than sufficient! !
A reciprocating vacuum pump can be used instead of a water ring pump, because with a water ring pump, the water is discharged outside, and it contains a small amount of toluene, which contaminates the environment. Our company is a manufacturer of aniline. For the distillation of aniline and ***, reciprocating vacuum pumps are used for vacuum distillation; if water ring pumps were used, the water discharged would contain small amounts of organic substances, thereby contaminating the environment, which is why they are not utilized.
This post was last edited by symc on 2009-7-1 03:41. After reviewing the original poster’s requirements and the comments from other experts, I feel they aren’t very accurate. From a professional and optimal selection perspective, a liquid ring vacuum pump with a closed-loop design, using toluene as the working fluid, would be the best choice; in such a design, the circumferential speed of the impeller should be increased slightly. Compared to any other vacuum pump suitable for this application, it has basically no disadvantages (excluding price considerations). Almost all advantages: 1. No pollution; 2. Not easy to damage, remains functional for years – essentially zero maintenance required; 3. Highest toluene recovery rate
Yes, dry screw vacuum pumps perform quite well in this regard. You can consult Weihai Zhide Vacuum Technology Co., Ltd. for more information
A vapor jet pump can probably be used as well, with multiple stages connected in series
You can use *** as a sealing fluid and recycle it. Overflow recovery. 10# dhlsh
The most environmentally friendly approach, as well as the rational trend, is to use dry screw vacuum pumps. You can inquire about QQ4490 24417.