Chemical industry
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Vacuum pumps and units for rectification columns Rectification is the separation of liquid and liquefied gas mixtures based on the diffusion exchange of matter between nonequilibrium phases and accompanied by interfacial heat exchange. Vacuum rectification is used in the petrochemical industry to separate oil into gasoline, fuel oil and other products, in the production of carbon disulfide, synthetic rubber, for cleaning solvents, reagents, raw materials, etc. Vacuum pumps are capable of condensing saturated steam from the rectification process. In this case, solvents, including naphtha, can be used as a working fluid. Due to this, valuable solvents are captured in the vacuum system of the distillation column and can be reused. |
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Vacuum filtration ZME pumps of the LRE and LRF series are often used to create a vacuum in drum and disc filters for dewaxing solvents, fuels, wastewater treatment, as well as for the production of additives and lubricants. Due to the low sensitivity to moisture in the intake gas, the LRE and LRF pumps are ideal for these processes. |
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Evaporation and distillation Vacuum evaporation is used in chemical production to thicken solutions or to completely remove solvents. During evaporation by liquid-ring vacuum pumps, the solution in the apparatus is most often boiled and the resulting vapor is removed. ZME liquid-ring pumps and units in explosion-proof design are also often used for pumping air and hydrocarbon vapors from commercial tanks and systems. Steam condensate can be used as a working fluid to prevent contamination of the product, reduce steam consumption and reduce the volumetric capacity of the pumping unit (due to the condensation effect). |
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High-vacuum hybrid plants for the production of ABS plastic, polystyrene, polycarbonates, thermoplastic biodegradable plastics, perfumes and molecular distillation processes The units are designed specifically for the customer's technological process on the basis of vacuum liquid-ring pumps and Roots pumps or steam ejectors to ensure high pumping speeds at vacuum values of 0.5 Pa abs. The units are equipped with instrumentation and control systems to control the pumping process locally or to transmit control signals to the upper-level automated control system. |
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