Selection of vacuum pumps
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The water ring vacuum pumps currently used by the company serve two main functions: first, they enable certain liquid materials to be pumped into the reaction vessel through vacuum via the transfer pipes. Because a pump with a higher flow rate is required. We currently have an 11kw water ring pump, and when operating two reaction vessels simultaneously, it’s clear that the flow rate is not sufficient. 2. At a certain stage of the reaction, the organic solvent toluene, which was added in the early stages of the reaction, is removed. Approximately 3000 MT/H of toluene passes through primary circulating water cooling, and then through secondary frozen brine cooling; only trace amounts of vapor enter the vacuum pump. Therefore, explosion protection is possible. The option I want to change for the vacuum pump at the moment is. 1. Units equipped with a Roots water injection ring. 2. Using a slide valve pump; 3. A screw pump – they seem to be non-explosion-proof. .
When selecting a pump, it is first necessary to identify the problem, and the parameters must be provided as accurately as possible. Is it the insufficient flow rate, the inadequate vacuum level, or neither? If the flow rate is insufficient, a pump with a higher flow capacity should be used; if the vacuum level is not sufficient, cascade connection or the use of a different type of pump is necessary. Can I give it a push when feeding it? Why do we have to draw?
The selection of a vacuum pump involves various factors, such as the composition and properties of the medium to be evacuated, the required pumping speed and ultimate/operating vacuum levels, as well as whether there is a need for or value in solvent recovery. You can add me on WeChat at 61996311 or call me at 15689327530 for answers
Features of the new vacuum equipment (multi-stage air-cooled Roots vacuum system): 1. It can discharge directly into the atmosphere; it is a type of dry vacuum pump that causes no secondary pollution, thus meeting environmental requirements. 2 The inlet ultimate vacuum can be controlled between 50 (Pa) and 15,000 (Pa). The applicable negative pressure range is wide. The 3 exhaust ports can withstand high pressures, making them suitable for gas recovery and combustion treatment. 4 exhaust capacities, suitable for large-scale equipment in various industries. 5. In certain environments, its power consumption is lower than that of other vacuum pumps. Energy saving. Explosion protection mainly refers to the explosion protection rating of the motor, right?
At present, the main issue is insufficient flow; a vacuum level of -0.08 is sufficient as it is not required to be very high
Water ring vacuum pumps generate large amounts of waste liquid, imposing a burden on environmental water treatment and increasing the loss of organic solvents. Our unit currently uses screw vacuum pumps for negative pressure distillation; screw pumps have been used for propylene, butanol, and dichloromethane as well. Sealing, cavitation, and corrosion in dry vacuum pumps are key technical issues
Then connect a new pump in parallel, or remove the current pump and replace it with one with a higher flow rate.
It is recommended to use a larger liquid ring vacuum pump unit.