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Considering centrifugal extraction such as extractive machine equipment material selection

by:Deyuan      2020-09-09
With the industry and the continuous development of science and technology level, mechanical equipment began speeding up unceasingly, the wave of change for manufacturing equipment and parts of materials put forward higher requirements. For the machine design and manufacture of centrifugal extraction, reasonable choice and correct use of material is a very important work.
in order to meet the diversity of the centrifugal extraction machine working conditions, more people are beginning to add in centrifugal extraction machine of anticorrosion materials and high temperature resistant material. Our common centrifugal extraction unit into a material, such as aluminum, copper, lead, titanium and other alloy materials. The modern centrifugal extraction machine materials in addition to the application of carbon steel, alloy steel, cast iron, also includes a variety of other non-ferrous metal and nonmetal materials. Due to the demand of industrialization, for corrosion resistance, high and low temperature resistance, high and low pressure requirements, special process conditions, such as non-ferrous metal more are added in the production of centrifuges, columns such as copper has good electrical conductivity and resistance to low temperature toughness, aluminum relative density is small, lead to radiation protection, a variety of media such as resistance to sulfate corrosion, but because of the non-ferrous metals market price is more expensive, only used in low-voltage field cooperation the overall material, and high pressure, often using nonmetallic material used for lining material.
nonmetallic material has excellent corrosion resistance, rich raw material sources, is a kind of equipment material has a widely development future. Non-metallic materials can be used as a separate manufacturing material structure, and can be used for lining of metal equipment protection, coating, can also do equipment sealing materials, insulation materials and high temperature resistant material. Its composition can be divided into organic and inorganic nonmetal materials in metal material two kinds big. For chemical equipment correctly select material and adopt a key equipment of anti-corrosion measures, from corrosion, prolong the service life of equipment.
in order to meet the requirements of production and operation of centrifugal extraction machine, relevant enterprises should not only from the device structure, manufacturing process and conditions of use and life into consideration, but also from the material corrosion resistance and physical and mechanical properties to be adapted to the working condition of equipment, materials and cost consideration. Centrifugal extraction machine features:

(1) to adapt to the strong performance - — Compared with the traditional van and extraction tower equipment, under the effect of centrifugal force, the remaining time is short, split phase quickly, to adapt to the wide range of flow ratio, and processing power; By changing the weir plate and frequency control of motor speed can meet the different density and viscosity of liquid materials;
2 material stock of small - — Two-phase material stock in the equipment is small, short contact time, more suitable for processing because of long time volatile activity and variability of materials such as antibiotics, etc. , of course, individual system needs two phase together contact time long also can operate separately.
(3) high extraction efficiency - — Phase equilibrium set up fast, easy to implement series single stage or multistage counter-current or wrong washing and extraction, high mass transfer efficiency and grade efficiency approaching 100%, stop not to undermine the established after concentration distribution at different levels, can at any time at all levels of sampling, facilitate testing.
(4) to take up the space is little, — Motor direct drive, no transmission attachments, compact structure, save area and operating space, less auxiliary equipment.
5] adaptable - — Not because of the change of the material influence extraction effect, can deal with small difference in density between the viscosity of the system, and has a strong ability of demulsification.
[6] operating performance is good, — Automatic operation, the operation flow ratio range is very wide. Can continuous uninterrupted operation, also can use small batch more varieties; Can be intermittent operation, can be a single run, also may need many sets of series operation according to the craft, unlimited number, installation, operation and maintenance is simple, you need less workers, can significantly reduce the labor intensity of workers and improve working environment, and a parking is convenient, easy to implement online analysis and automatic control, etc. Power can be run. Without the traditional process of high tower transporting fluid.
once continuous counter-current reliability - — Current implementation is imposed by the mixing chamber of the suction force per level, does not need the other set interstage pump. No force during conventional process equipment capacity, prone to flooding, multistage series connection must be set when the interstage pump.
being supplied equipment easy to enlarge - — Practices prove that small equipment in lab scale and mass production with large equipment effect is exactly the same, unnecessary to consider the amplification effect.
'levies investment costs low - — Content of small machine, using smaller extraction agent, solvent or detergent.
⑽ sealed performance is good, — Meet the explosion-proof, and the application of the poisonous and harmful and volatile medium environment and the requirements of GMP;
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