年产120万吨冶金焦焦化厂鼓风冷凝阶段的初步设计_精品.doc

年产120万吨冶金焦焦化厂鼓风冷凝阶段的初步设计 The task of design is the primary design of the congealed work segment of blasting in the coking plan that products metallurgical coke 1200 thousand ton. The design is divided into the abstract ,the introduction ,the literature summarizes,the research content and the technological design plan and the shaping,the coal gas drum wind condensation construction section process design, the non-technological conditions choice and the design , the factory practical experience and certain technical improved, the reference parts etc. This design has carried on the preliminary design to the congealed work segment of breeze of blasting to purifying coal gas.Each kind of equipment needed in the processing, such as the horizontal at the beginning of cross-tube primary gas cooler,the blast ,the electricity caughtthe tar,the mechanized storage pond and so on carries on in detail, has been done to it and has matched the requipment. This design also has designed and chosen the condition of the non-craft section of the drum wind condensation construction, causes the drum wind condensation consruction section to be more perfect. In the drum wind condensation construction section design,some new improved technologies are cited.So it has much practical value. Keywords:blast,condensation,coking plant , cross-tube primary gas cooler,crafatwork flow. 引言 煤炼焦时生成的焦炉煤气以650~800℃的温度从焦炉的炉顶空间逸出。此时焦炉煤气称为荒煤气，它包括常温下的气态物质，如氢气、甲烷、一氧化碳和二氧化碳等；烃类；含氧化合物，如酚类；含氮化合物，如氨、氰化氢、吡啶类和喹啉类等；含硫化合物，如硫化氢、二硫化碳和噻吩等。粗煤气中还含有水蒸气。为适应以后的工艺过程的需要，应将焦炉煤气冷却至25~35℃。这个任务在化产车间的初冷器内完成。 鼓冷工段是焦化厂的心脏，鼓冷工段投产成功与否决定了焦化厂是否能够顺利投产主要任务如下： 1. 分离出荒煤气中的绝大部分焦油、萘、氨水，以利于后续单元的运行； 2. 将煤气冷却到一定的温度，使之能满足后续单元的要求； 3. 氨水、焦油、焦油渣的分离； 4. 物料的输送： （1）往焦炉送循环氨水，往后续单元送剩余氨水； （2）输送煤气并使整个煤气系统的吸力、压力能够满足焦炉、煤气净化的正常要求； （3）外送焦油。 1 文献综述 1.1 世界炼焦工业的发展 焦炭是炼钢的重要辅料，因此焦化工业随着钢铁工业的发展而发展。 世界焦炭产量于20世纪70年代达到顶峰，即3.8亿吨左右。从80年代初以来，世界焦炭产量呈下降趋势，90年代曾下降到3.3亿吨[1]。到20世纪末，各国焦炭生产增减幅度已明显变小，21世纪初期世界焦炭产量基本稳定在本世纪3.5亿吨上下，与焦炭需求量是基本平衡。近几年世界焦炭产量略有回升，但总量