焦化厂焦炉煤气脱硫工段的设计.docx

本科生毕业设计100万吨/年焦化厂焦炉煤气脱硫工段的设计摘要本设计为100万t/a焦化厂焦炉煤气脱硫工段的设计，采用的煤气脱硫方法为湿法脱硫的改良A.D.A.法。本设计的主要任务是脱除焦炉煤气中的硫化氢，同时要使生产出来的煤气各项指标能满足要求，达到民用煤气的标准。设计的主要内容包括：1、煤气脱硫方法的概述和意义；2、工艺流程的选择与论证，选用改良A.D.A法；3、主要设备的计算、选型和布置；4、保障生产正常进行所必须的非工艺部分，包括供水、供电、采暖、设备维修、仪表自动化等；5、经济核算，每生产一吨焦炭该设计工段亏损7.0元。本设计的工艺部分包括煤气脱硫和脱硫液再生以及硫磺回收。脱硫采用了脱硫塔，再生部分用再生塔，对于其基本原理，文中有着详细的论述，回收硫部分采用了真空过滤机。在设计过程中，参考了焦化厂的焦炉煤气净化工艺，并在其基础上将国内外一些新的、成熟的工艺进行了比较、引用。关键词：焦炉煤气；脱硫；改良A.D.A法AbstractThis is a design of 100 million t / a coking plant coke oven gas desulfurization section, the method for gas desulfurization is the improved ADA law. The main task of this design is the removal of hydrogen sulfide in coke oven gas,and the gas produced to make the indicators to meet the requirements, to civilian gas standards,at the same time.The main contents of the design are as follows:1, an overview of gas desulphurization and significance. 2, the process of selection and demonstration,select the improved of ADA Act. 3, the calculation, selection and arrangement of major equipment. 4, the security necessary for normal production of non-technology components, including water, electricity, heating, equipment maintenance, instrumentation and automation.5, the economic accounting,produce 1 ton of coke necessary to loss of 7.1442yuan.Part of the design process including gas desulfurization and regeneration of the desulfurization solution and sulfur recovery. In zhe deign, part of desulfurization thedesulfurizationtower is used, recycled parts recycled tower is used. For the basic principles, the paper has a detailed discussion.Part of sulfur recovery the vacuum filter is used.In the design process, with reference to the coking plant in Xuzhou Universe coke oven gas purification process, and on its basis , compared the home and abroadnew, mature technology, and references.Key words: coke oven gas; desulfurization; improved ADA Act1 总论1.1焦炉煤气脱硫的目的和意义焦炉煤气由焦化企业炼焦生产时产生。从焦炉集气管流出的煤气称为荒煤气，其硫化氢含量与装炉煤料的全硫量有关。一般干煤全硫的质量分数为0.5%~1.2%，其中有20％~45％转到荒煤气中，煤气中95％以上的硫以硫化氢形