关键词：乳酸 ； 丙烯腈； 生产工艺； 用途


AN ANNUAL OUTPUT OF 60,000 TONS LACTIC
ACID PRODUCTION PROCESS DESIGN WORKSHOP

Instruction manual: At present, the lactic acid to the life of people brought a lot of advantages, at the same time, their use is widespread, making the sharp increase in demand. This design through access to various literature, understand the basic properties of lactic acid, its widespread use herald a broad market prospect. With this, this design has very important theoretical and practical significance. This design according to the law of conservation of mass on the material balance and heat balance, on the reactor design and layout of the plant, etc. This design adopts the method of acrylonitrile production process, to react with acrylonitrile and sulfuric acid as raw material, again will generate crude lactic acid and methanol reaction generates lactic acid methyl ester, after rectification of pure ester, then through a quick product lactic acid after heating. This method because of the advantages of low production process, high yield, environmental pollution and production cost low characteristic, is the ideal production process.
Along with the chemical industry fast development, the chemical product already the omnipresent there is no place did not have. Therefore the chemical design duty is more and more heavy. First, in the chemical production, through transporting chemical industry design aspect knowledge and the method, may realize to the chemical factory (workshop) rebuilding and extension, carries on the productivity to the unit operation equipment or the entire installment to demarcate with the technology economic indicator evaluates; carries on the appraisal to the technical process; discovers the weak link and unreasonable phenomenon as well as excavation productive potential and so on. Second, in scientific research, since childhood experimental to experimental enlargement, down to the investment industrial production, all cannot leave the design. Looked from the modern times photochemistry industrial development process that, the research holds the important status day by day. But if we want cause the scientific research achievement to transform the productive forces, namely realizing industrialization, We must carry on the scientific research and design in close integration with new development work and so on craft, new product as well as new equipment. Third, in the capital construction, design is the capital construction most important link, is the ready-made construction basis. From single equipment to complete set installment, from a miniaturized factory (workshop) to large-scale petroleum chemical industry enterprise, they all must first finish the engineering design before construction. If we want to complete a good quality and advanced level chemical industry installment, the important precondition is must have a high level and high grade design. Enhanceing the design’s quality and speed is the crucial promoter action to the capital construction enterprise development.
In brief, the chemical design plays an important role in the new factory (workshop or installment) construction, the old factory transformation and the small scale experimental or the medium scale experimental installment. That is, the design is a necessary route for the scientific research achievement transforms for the industrialization big production must pass through the way.
1.Duty origin
    This design is slightly tries according to the methanal scientific research to report and the experimental empirical datum, and has referred to the brief introduction of  producting methanol of many industry factories. Its goal is carries on a time of chemical design attempt using the chemical engineering correlation knowledge, and is the methanol industrialization production; the production installment design provides the reference. As the simulation design, this article has abbreviated the chemical design partial contents, like craft pipeline design, explosion-proof electricity design, powerdesign and factory whole arrangement and so on. 年产6万吨丙烯腈制乳酸生产工艺设计+图纸(2):http://www.751com.cn/huaxue/lunwen_14910.html