年产6吨三聚氰胺工厂毕业设计

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1、年产 6 万吨三聚氰胺化工厂设计 I 年产 6 吨三聚氰胺工厂设计 摘 要 三聚氰胺是一种用途十分广泛的有机化工产品。三聚氰胺可以由尿素在高温下分解成异氰酸， 异氰酸进一步气相聚合成得到。三聚氰胺是一种重要的氮杂环有机化工原料，是尿素的深加工产品， 主要用于生产三聚氰胺甲醛树脂，广泛用于木材加工、塑料、涂料、造纸、纺织、皮革、电气、 医药等行业，目前是重要的尿素后加工产品。此外三聚氰胺还可以作阻燃剂、减水剂、甲醛清洁剂 等。三聚氰胺生产方法有双氰胺法和尿素法。由于以尿素为原料的生产路线的各项技术经济指标远 远好于双氰胺为原料的工艺路线，双氰胺法已逐步被淘汰，尿素法是今后发展方向。对于把三聚氰

2、胺作为尿素的下游产品进行开发的项目，它有着得天独厚的条件。临近尿素生产装置，能向三聚氰 胺装置可靠地提供熔融尿素原料， 又能将三聚氰胺装置的副产品甲胺液返回到尿素装置再生产尿素。 本设计是年产6万吨三聚氰胺工厂设计， 主要进行了工艺计算、 设备选型， 并绘制了全厂平面布置图、 工艺流程图、设备装备图、生产车间的立面图和平面图。 关键词：三聚氰胺，尿素，氨，二氧化碳，设备选型 II The Factory of Melamine Whose Output is 60,000 Tons Per Year ABSTRACT Melamine is an organic chemical produc

3、t of very extensive use. Melamine is deserved by the gas-phase polymerization of isocyanic acid which is the decomposing products of cymene. Melamine is an important Heterocyclic organic chemical raw materials, urea is the deep processing of products, mainly used in the production of melamine - form

4、aldehyde resin, widely used in wood processing, plastics, paint, paper, textiles, leather , Electrical, and medical industries, it is important to urea processing products. In addition to melamine can also fire retardant and water reducer, formaldehyde cleaning agent. Melamine production methods hav

5、e dicyandiamide law and the law of urea. As the raw materials for urea production line, the technical and economic indicators dicyandiamide far better than the raw materials for the process line, dicyandiamide method has gradually been eliminated, urea law is the future direction of development. For

6、 the melamine urea as the development of downstream products, it has unique conditions. Approaching urea production facilities, able to provide reliable devices melamine urea melting of raw materials, but also will be a by-product of melamine installation of methylamine return to the urea plant production of urea.This indication is to design for a chemical factory, which produce 60,000 tons Melamine yearly. It include the main equipment computation and the shaping in the technical process of p