浅析用DL型塔盘改造一吸塔

通过对DL型塔盘的应用介绍 ,降低一吸塔的热负荷 ,以达到减小回流氨添加量 ,便于高负荷下一吸塔的操作 ,最终达到提高氨加工能力     

Hydrodynamics performance and tray efficiency analysis of the novel vertical spray packing tray

Column setup has been widely utilized in the petroleum and chemistry industries. However, with the fast progress of industries and the increasingly serious energy shortage, designing a new column setup with better performance and higher capacity becomes more urgent. In order to improve column's capacity and expand operating condition, a new type of column tray named novel vertical spray packing (NVSP) tray was designed and experimented. The performances of the novel tray, including pressure drop, weeping, entrainment and tray efficiency, were tested in a plexiglass column. In addition, performances of the novel tray were compared with that of the sieve tray and the Glitsch V1 valve tray. Based on the experiment data, the mathematical correlations of pressure drop, weeping and entrainment for the novel tray were established by regression analysis method. A fundamental model of dry pressure drop of the novel tray was promoted at the form of sum mode. The results indicate that the novel tray has wider operating condition and better performance.     

Mechanism and analytical models for the gas distribution on the SiC foam monolithic tray

Silicon carbide (SiC) foam material has been applied as monolithic tray for distillation column in our previous study. A systematic understanding of the gas distribution process on the foam tray should help to the design of commercial application. In this article, local gas holdup distribution and bubble size distribution are used to measure the gas distribution. The local gas holdup is tested by the conductive probe and the number of test point is counted in different local gas holdup. The bubbles are captured by the high‐speed camera to measure the bubble size. Bubble size is calculated as ellipsoidal bubble and counted with different pore sizes. Furthermore, a three‐stage process model is put forward to explain the uneven distribution of gas phase, and verified by the experimental values. The results show that the structure and the thickness of SiC foam is the decisive factor for the gas distribution performance. © 2015 American Institute of Chemical Engineers AIChE J, 61: 4509–4516, 2015     

新型复合式内部能量集成的精馏塔的机械设计与水力学模拟

基于HIDiC的理论和Aspen模拟的结果,建立了新型内部能量集成的精馏塔的塔节结构,对筛孔式结构的复合HIDiC塔节做了CFD模拟,探索了不同参数下的水力学性能,优化了新型复合塔节的结构。结果表明:对于筛孔式复合塔节,减小塔板孔径,降低出口堰高有利于提高传质和传热效果。利用SolidWorks软件针对温度与压力下的双重效应做了静应力分析,通过HIDiC理论,模型构建,水力学模拟相互验证,将HIDiC逐板换热的理论与实际模型完美结合。     

合成氨净化系统改造总结

针对金信化工有限公司合成氨净化系统存在的问题．采用新技术对脱碳液过滤器、净化气水冷器、变换气脱硫塔及熔硫釜等设备或工艺进行了改造，取得了满意的效果。     

筛板不均匀漏液的规律及其影响

筛板不均匀漏液的规律及其影响曾爱武刘富善许松林黄洁余国琮（天津大学化学工程研究所，天津３０００７２）关键词筛板不均匀漏液塔板效率１引言塔板漏液是一种导致塔板效率降低的纵向返混。在工程设计中通常以相对漏液１～１０％来决定气相负荷下限，但值得指出的...     

立体并流板的流体力学和传质性能

新型立体连续传质液体并流塔板是将LLC-Tray与两种并流流型相结合开发而成的新型塔板。通过实验测定了新型塔板的干、湿板压降,雾沫夹带,漏液等流体力学性能和传质性能,并进行关联得到了相应公式。结果表明,新型塔板板压降较低,雾沫夹带较低,液体处理量相对LLCT提高30%。     

立体旋液式并流塔板的海水脱硫特性

引言海水烟气脱硫技术是利用天然海水的弱碱性吸收烟气中的SO2,达到净化烟气的目的[1-4]。该技术在最近四十年内已在世界范围内众多大型电厂实现工业化应用[5-6],目前,多数海水烟气脱硫系统采用ABB(即ALSTOM)公司的Flakt-Hydro工艺[7-8],以脱硫塔作为主要的吸收设备,如:喷淋     

换热塔盘结构设计的改进

简介焦化、催化分馏塔换热塔盘的作用,针对原设计塔盘在高温高速油气作用下易发生脱落的问题,找出设计改进方法,解决换热塔盘的脱落。