甲醇制氢生产装置——预热器设计.pdf

甲醇制氢生产装置——预热器设计 摘 要： 本次设计是甲醇制氢生产装置中的预热器，主要工作包含了对甲醇制氢生产 装置预热器的选型、进行相关工艺计算、结构设计及强度校核等。本次预热器设计选择 固定管板式换热器，其中工艺计算包括对换热面积的计算，传热系数的校核，总传热系 数的计算和压降校核；结构设计包括管程数，换热管的确定，壳体内径，折流板，法兰， 管板，支座的设计等；强度计算和校核等 关键词：预热器；固定管板式；工艺计算；结构设计 I Methanol hydrogen production plant – Preheater design Abstract ：This design is for the preheater in the methanol hydrogen production unit. The main work includes the selection of the preheater in the methanol hydrogen production unit, related process calculations, structural design and strength check. This preheater design selects a fixed tube-plate heat exchanger, in which the process calculation includes the calculation of the heat exchange area, the check of the heat transfer coefficient, the calculation of the total heat transfer coefficient and the check of the pressure drop; the structural design includes the number of tube passes , Determination of heat exchange tubes, design of inner diameter of shell, baffles, flanges, tube sheets, supports, etc.; strength calculation and verification, etc. Key words ：preheater; fixed tube sheet type; process calculation; structural design II 目 录 摘要·····································································Ⅰ Abstract ······························································II 目录 ·····································································Ⅲ 1 引言····································································1 1.1 甲醇制氢流程 ························································1 1.2 换热器及发展趋势 ···················································1 2 工艺计算 ································································2 2.1 换热器设计方案的确定 ················································2 2.2 物性参数 ····························································2 2.3 估算设备尺寸 ···········