焦炭化过程教程分析.ppt

Section2 Coke Process 焦炭化过程 Ma tingxia Petroleum and Chemical Engineering System Fundaments 焦炭化过程，是以渣油为原料，在高温（500~550℃）下进行深度热裂化反应的加工过程。包括延迟焦化、流化焦化和灵活焦化等多种工艺手段。 The coke process is the processing process using residue as raw material and proceeds deep thermal cracking reaction at high temperature (500 ~ 550 ℃ ). It includes various means of technology such as the delayed coking, fluidized coking and flexible coking, etc. Difinition—— 减压渣油； 减粘裂化渣油； 脱油沥青； 热裂化焦油、催化裂化澄清油和热裂解渣油； 炼油厂的废渣； 煤焦油沥青。 常用的焦化原料油 ①vacuum residue ; ② the visbreaking cracking residue ; ③ deoiled asphalt ; ④ thermal cracking tar, catalytic cracking decant oil and pyrolysis residue ; ⑤ the refinery residue; ⑥ coal tar pitch. coking raw material oil 焦化气体 （包括液化石油气和干气） 焦化汽油 焦化柴油 焦化蜡油 焦炭（又称石油焦） 延迟焦化的产品 The delayed coking products ①coking gas( including liquefied petroleum gas and dry gas) ②coking gasoline ③coking diesel ④coking wax oil ⑤coke (also known as petroleum coke) 加热炉 焦炭塔及冷焦和放空系统 分馏塔及换热单元 除焦系统 富气压缩/吸收系统 延迟焦化装置 Heating furnace Coke tower and its cold coke and venting system The fractionation tower and heat exchanger unit Hydraulic decoking system Rich gas compression-absorption system The Delayed Coking Unit 焦化加热部分 原料预热部分 注水部分 过热蒸汽部分 烟气余热回收 coke heating raw material preheating injection steam superheating fuel gas heat recovering. The Delayed Coking Process Softened water Heating furnace Four-way valve四通阀 Coker tower Raw material Coker Wax oil Dieael oil steam Fractionating tower stripping tower汽提塔 gas Crude gasoline Return tank 原料性质 加热炉出口温度 系统压力 联合循环比 生焦周期 The main influencing factors of delayed coking the nature of raw materials furnace outlet temperature system pressure combined-cycle ratio coke cycle 延迟焦化的主要影响因素 The process flow diagram for the principles of the fluidized coking and flexi-coking 流化焦化（实线部分）与灵活焦化（加虚线部分）原则流程图 The process flow diagram for the principles of