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Study On The Process And Equipment Of Zincum Acetate-active Carbon Catalyst Preparation

Posted on:2009-07-04Degree:MasterType:Thesis
Country:ChinaCandidate:F Q YinFull Text:PDF
GTID:2121360245990351Subject:Chemical Engineering
Abstract/Summary:PDF Full Text Request
At present, zincum acetate-active carbon catalyst is mostly produced by the technology which was developed between the 1970s and 1980s in domestic vinyl acetate plant.The capacity is 1m3 in batch processing.The active component can't be distributed uniformly because of high bed; The operating condition is very bad because of the positive pressure in fluidized bed;The waste water is large because of wet type dust collector.The product quality is fluctuation because of little local control and low automatic level.So the old technology can't meet the requirements of technology advancement and increasing production scale. Thus it is urgent to investigate a preparation technology and equipment for zincum acetate-active carbon catalyst production, and develop a catalyst preparation technology of stable quality, good environment, and high automatic level in order to meet the large scale ethylene apparatus's needs and provide technological reserve for PolyVinyl Alcohol (PVA) industry.This research is based on the zincum acetate-active carbon catalyst device with batch processing load of 3m3 active carbon of 50kt/a PVA and auxiliary project. By digestion and technical innovation, a technical route has been proposed which includes optimal zincum acetate solution preparation, solution conveying by pipe and applying auto-cleaning technology, spraying, absorption and drying integration by fluidized bed and tail gas purification. A well-structured fluidized bed of spray, absorption and drying integration is designed with batch processing load of 3m3 active carbon,which is simulated by using Fluent software. The simulating results show that the design of air distribution plate and arrangement of internals parts are both satisfying.Through investigation and analysis, the process parameters and the technological equipment structure are optimized, zincum acetate-active carbon catalyst process technology and equipment package is developed and designed. The quality of catalyst can meet the customer's needs.The development and application of this packaged technology has built a technical platform for its promotion, larger scale catalyst preparation and development in PVA plant.
Keywords/Search Tags:catalyst, zincum acetate, active carbon, preparation technology, fluidized bed, Fluent software simulation
PDF Full Text Request
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