前  言
是由甲醛和乙醛缩合而成,在涂料、汽车、轻工、建筑、合成树脂、等方面具有广泛的应用,此外,还用于医药、农药等生产。基于在山西三维有限公司实习所得,同时结合专业课的深入学习以及老师的悉心教导,我开展了对的车间工艺设计
本次设计内容以甲醛、乙醛和氢氧化钠为原料经过缩合反应,得到混合物,在经过中和、脱醛、蒸发、结晶工序得到晶体,最后经过分离、干燥等工序得到产品。由此工艺可知,设计任务是非常庞大的,这不仅要求我们要有扎实的专业理论知识,更要有灵敏的理解感悟能力,同时要熟练掌握计算机,熟练运用画图工具,其成果包括工艺流程图、主设备图、车间布置图、物料衡算、热量衡算、工艺设备选型设计、经济核算、设计说明书的撰写、查阅英文文献并翻译等。由此可见任务极其艰巨,在设计中我多次无从下手,苦恼之极,但静下心来仔细研究、摸索,终有路可寻,虽然很辛苦,当从中所学知识及能力是无法估量的,精神上更加丰富。
本设计为初步设计,我按照设计任务书要求内容,一步一步完成,但由于经验不足,理论和实践知识不够扎实,在设计中还有大量不足之处,诚请老师给予指正。
2011年05月30日
年产300吨对羟基苯甲醛生产车间工艺设计
摘要
本设计为年产300吨对羟基苯甲醛生产车间工艺设计。对羟基苯甲醛缩写为PHB,分子式C7H6O2为白或淡黄针状结晶具有芳香气味。熔点116.4- 117微溶于水易溶于热水、甲醇、丙酮和乙醚等有机溶剂[在空气中易升华相对密度1.129。对羟基苯甲醛是一种十分重要的精细化工原料广泛用于医药、香料、农药、石油化工、电镀等领域
本设计所采用对甲酚催化氧化法,对甲酚催化氧化法与其它方法相比具有收率和纯度高、三废少、反应缓和、操作简单等优点该法已成为将来对羟基苯甲醛生产的发展趋势。本设计内容主要包括工艺设计,物料衡算,热量衡算,工艺设备计算与选型,安全与环保,经济核算。本设计所得成果主要有设计说明书,工艺流程图,主设备图,车间布置图。
关键词:对羟基苯甲醛,对甲酚催化氧化法,车间工艺,设计
The Production Process Design of the Workshop for Pentaerythritol with an Annual Output of 300 Tons
Abstract
The design is the production process design of the workshop for pentaerythritol with an annual output of 10,000 tons. Pentaerythritol is a typical structure of four-neopentyl alcohol, also known as four-hydroxymethyl methane, and its chemical name is 2,2 - bis (hydroxymethyl) - 1,3 - propanediol, and its appearance is white powder Crystalline, odorless, slightly sweet, flammable, toxic, soluble in water, slightly soluble in ethanol, not soluble in glycerol, ethylene glycol, formamide, acetone, benzene, carbon tetrachloride, ether and petroleum ether Organic solvents.
The routes used in the design process are汽车除甲醛 the following: formaldehyde and acetaldehyde as raw materials, sodium hydroxide as catalyst are condensed in the condensation reaction kettle, and then they aer passed into the reactor for neutralization and removal of the tower leads to dealdehydes formaldehyde, and then part of the water is steamed through the eva
porator, and then mixture is crystallized in the crystallization and receive pentaerythritol, and the drying crystal is received through the dryer, the final product can be obtained. The design elements include process design, material balance, heat balance, calculation and selection of process equipment, safety and environmental protection and economic accounting. The main results of the design are the design specifications, process maps, master plans, workshop layout.