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Now more ruthless means to solve water pollution , which is the most widely used ion exchange resin , ion exchange resin is not just for sewage treatment , it can be used to purify water, let it turn into freshwater , although this technology is now any course in research and development , but we all believe that someday , we can use the ion exchange resin technology desalination to solve the problem of shortage of freshwater resources .
Ion exchange resin is a resin with exchange functional , it can function using ion exchange adsorption of heavy metal ions , and can take advantage of a specific metal ions adsorbed lotion swapped out , and thus the heavy metal ions for recycling.
Ion exchange resins used not only for wastewater treatment , is also widely used in the pharmaceutical industry enzymes , vitamins, antibiotics extraction .
The purpose of this design is the design of a cation exchange resin integrated production line.Through access to information as well as four years of university study , on the cation exchange resin production technology, production technology, production equipment, carried out scientific argumentation and design.
Cation exchange resin production has two main parts, one is the skeleton of a cation exchange resin synthesis synthesis and white ball , the other is the introduction of functional groups that sulfonation . For skeleton synthesis, due to the small spherical particles uniformly made , the design uses a relatively mature semi-continuous suspension polymerization process . The process is in control of the molecular weight distribution , control the molecular weight has a huge advantage, and the process heat evenly , less prone to heat should not timely due to excessive pressure high temperature boiler explosion , it will not appear the phenomenon of violence poly waste of raw materials .
The design on the cation exchange resin production equipment for the equipment selection and design of appropriate technical description of the device parameters involved in the design of the main production equipment: reactor, measuring tank , pump, heat exchanger tube , decanter centrifuges , tanks, spray dryer , vibrating screen and so on. Wherein the tubular reactor and heat exchanger is focused mainly on the design of the various components of the reactor structure and characteristics , and select the appropriate sulfonated suspension polymerization reactor . Secondly, tubular heat exchanger selected for the design, calculation of the tubular heat exchanger heat transfer area, the heat , the number of tubes and tube . Finalizing the amount of equipment required , and device models.
The design on the cation exchange resin formulation of the basic design, and then based on the annual production of 1,000 tons of target material balance on the design , according to the results of the mass balance for production configuration for the basic recipe . The design of a production line, annual production 230 days , two shifts per day , each shift production of 2200kg of cation exchange resin. After each loss calculation , you can calculate the amount of each shift raw materials added . The design of the heat to account for, where necessary heat balance is the reactor, the reactor material for absorbing heat , the heat supplied to the reactor , reactor sub- account for heat loss , etc., and then calculate the heat required for the the required amount of steam is calculated .
Finally, the full consideration of personnel safety and environmental protection issues, the factory made a design for safe production , to enable staff to understand the significance of safety , understanding of toxic substances in order to protect yourself .
On the plant layout , plant selection length × width × height 18m × 6m × 10m rectangular design , rectangular design is the most popular design, which saves space and is easy to arrange equipment .
Since the ion exchange resin plant process design design a wide range of knowledge , and my limited knowledge and experience to design errors and inappropriate, ask the teacher marking criticism.