并列式连续重整装置转油线管道设计

结合800 kt/a连续重整装置,对反应转油线的管道设计进行了总结,探讨了设备平面布置、管道布置及选材、应力核算和转油线安装等问题.对于并列式重整装置,反应器与四合一炉顺序布置,能缩短转油线管道长度,保证转油线系统压力降尽可能小.通过管道材质的升级,解决了设计标准升级和装置苛刻度提高带来的困难,给同类装置设计提供了借鉴.根据转油线、四合一炉炉管及附件的实际质量核算弹簧,能有效防止工作状态下弹簧失效.加热炉集合管弹簧偏置安装,是转油线管道安装的关键.

Piping design of transfer line for the side-by-side CCR unit

Combined with 800 kt/a continuous catalytic reforming(CCR) unit, the piping design of the transfer line is summarized. The main problems of equipment layout, pipeline layout and material selection, stress calculation and transfer line installation are discussed from four aspects of process flow, design specification, material selection and device operation. For the side-by-side CCR unit, the sequential arrangement of reactor and quadruple furnace can reduce the length of transfer line pipeline and ensure that the pressure drop of transfer line system is as small as possible. By means of material upgrading, the problems of more strictly designing standard and reactive severity are solved, which can give out a reference for the same question of new unit design. The spring can be calculated according to the actual weight of transfer line, furnace tube and accessories, which can effectively prevent the failure of the spring under working conditions. The offset installation of the collector tube spring of furnace is the key to the installation of transfer line tube. Under more rigorous design conditions, the temper embrittlement of 2.25 Cr1 Mo should be considered.