转化系统碟—环式气体换热器的设计与应用

Design and application of gas gas heat exchangers with disk doughnut baffles in conversion system

设计制作了处理气量为３３０００ｍ３／ｈ的两台串联的碟—环式气体换热器，以代替转化系统原有的两台圆缺式气体换热器。新换热器的实测传热系数为２０５Ｗ／（ｍ２·Ｋ），提高了８４７％；管程总阻力为６８６Ｐａ，壳程总阻力为７７１Ｐａ，分别降低６５０％和６０１％。两年来运行情况良好。

Two gas gas heat exchangers, arranged in series, with disk doughnat baffles and capacity of 33*!000 *!m 3/h gas were designed and made to replace existing ones with segmental baffles The new heat exchangers have practical overall heat transfer coefficient of 20 5*!W/(*!m 2·K),up 84 7%,and total pressure drop of 686 Pa on the tube side and 771 Pa on the shell side, respectively down 65 0% and 60 1%.They have operated well for two years