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Abstract
Adsorption Resin is a kind of Porous polymer material with excellent absorption features, and is a kind of molecular sieve adsorption and with the principle of combining the polymer separation material. In the chemical structure, some do not take any function base, some, with different polarity of the function.
Adsorption resin is generally 0.3 ~ 1.0mm pellets, it has an appearance of white, yellow, brown, black and other colors. The difference of colors reflect the difference of physical and chemical structure.
Adsorbent resin is mainly characterized by its porosity. Pore structure, pore size, pore volume and pore surface area, etc. are the key factors affecting its performance. Different from the other sorbents, adsorption of pore structure and various indicators can be adjusted over a wide range, and its chemical structure, there are big changes in scope.
Big hole sorbents with physical and chemical stability due to high, high spicific surface, adsorption capacity, selective, adsorption and desorption speed, mild conditions, convenient, use renewable processing cycle is long, like a closed-circuit circulation, save cost, and many other advantages, in the biological medicine, chemical industry, analytical chemistry, clinical identification, environment protection field has a broad prospect of application。
The purpose of this design is to do some polar modification based on traditional macroporous polystyrene adsorbent resin production, occurrence that is the polar monomer Chloroacetonitrile under certain conditions, the reaction catalyzed reaction. According to this step the polarity modifier, can enhance the adsorption resins catalyzed gas phase adsorption of a stronger, but also absorb more of the adsorption resin may be a polar material.
Combined with the requirements of raw materials and products, according to polymer resin technology performance requirements, the nature of the polymerization monomer, hot elimination of principle, this design choose semi-continuous suspension polymerization process. This process in practical production has various advantage, such as: guarantee system temperature constant polymerization and smooth, avoid the appearance of exothermic peak; Can effectively control the suspension of polymer copolymerization; Suspension polymer particle size, narrow the molecular weight distribution; Suspension polymerization system high stability; Shorten production cycle, improve the production efficiency, etc.
This design to production big hole polystyrene adsorption resin main production equipment of the equipment selection and design, and determine the corresponding technical parameters. Production involves main equipment is the reaction kettle, heat exchanger, high trough, filter, vacuum pump, metering pump and so on, according to actual production condition, provides the selected equipment and the corresponding production manufacturers. Among them, the reaction kettle of the selection of the tube heat exchanger and the design is the key. The design of the design of the reaction kettle thinning, include the material, the kettle cover, mixing, clip set, the shaft seal and choice. Follow the realization process condition, safe and reliable, reasonable economy, easy operation and principle, to determine the flow rate and heat exchanger flow, heat body heat, the terminal temperature, and estimates of heat transfer area, on the basis of the technology of the heat exchanger structure size determined, complete with the tube heat exchanger design.
Combined with the actual choice production technology solutions and products production, but also for the relevant material and energy equilibrium calculation. This design task polystyrene big hole in total production of absorbent for 400 tons, according to the calculated formula of about 185 tons in soft water demand, NaCO3, 16% in aqueous solution about 1.2 tons of demand, MgSO4, 16% in aqueous solution demand 1.8 tons, SM making salt years demand for 244 tons, pinyl benzene years needs 138 tons, the hole by cyclohexane agent. The design USES a resin production line, work 200 days a year, every 10 hours of production plan.