Solid liquid separation equipment Manufacturing status and Solid liquid separation technology It also gives a brief description of the new progress. According to the characteristics of modern industry, the development intention of liquid-solid separation technology is briefly discussed.
Solid-liquid separation It is an important unit operation for removing solids from the liquid phase, usually by screening or sedimentation. In water treatment, the commonly used methods are microfiltration, clarification and deep bed filtration. The existing traditional solid-liquid separation technologies are mainly concentrated in pressure filtration, filtration and gravity sedimentation, and are widely used in medicine and health, paper making, environmental protection, food, fermentation and other industries. In many production processes, filtration and separation equipment is one of the key equipment. Its technical level and quality directly affect the feasibility, technical progress and reliability, product quality and energy consumption, environmental protection and other economic and social benefits of many industrial production processes. In the process of wet material processing, solid-liquid separation technology has been paid more and more attention. Because the imperfect technology will first affect the product quality, leading to material loss, and the pollution to the environment will also be more serious, especially for the particle suspension, the separation efficiency of the particle suspension will be reduced due to small particles, slow settling speed, small pore diameter of filter cake, and poor permeability. With the shortage of global water resources and the worsening of living environment, people also put forward higher demands for solid-liquid separation technology, and many researchers around the world have also conducted in-depth research in this area. Traditional solid-liquid separation technology has been widely used in chemical industry, light industry, pharmacy, mining, metallurgy, power, environmental protection and other sectors.
In chemical production, liquid-solid separation operation in inorganic salt industry often involves acidolysis, alkali dissolution, leaching matter filtration and filter cake washing, such as filtration of heavy alkali and separation of ammonia sludge in alkali industry, as well as filtration of phosphogypsum and separation of acid insoluble matter in fertilizer production. The quality of liquid-solid separation directly affects product quality, output value and yield. In recent years, the rapid development of precision inorganic chemical products has also put forward new demands for filtration and separation equipment. The production technology of many products in dye production involves filtration, cake washing and side operation. In addition, liquid-solid separation is also required in the production process of petrochemical products, pigments, coatings, cement and precision chemical products, so liquid-solid separation plays an important role in chemical production.
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