浅析天然气制甲醇装置转化放空阀性能优化

根据海洋石油富岛有限公司甲醇二期转化系统放空阀设计原理和技术要求,以及该阀门使用过程中的缺陷,将原阀门通过新工艺优化阀门的阀内件,使原设计选型在用阀门的泄漏量等级由IV提升至V,彻底解决了转化系统转化气泄漏量大的问题,达到了减少转化气消耗,实现了节能降耗的目的。

DN2500氨合成塔优化改造运行总结

DN2500氨合成塔在更换南京聚拓科技有限公司的DC-C型内件后,运行中存在合成塔内换热器气量无法进一步增加、催化剂第一轴向层温度偏低、出塔温度不易调节等问题,针对这些问题采取了有效的优化手段,优化后氨合成回路的吨氨电耗较之前有所下降,合成废锅产气量也较之前有所提高,产生不错的经济效益。

煤直接液化装置易磨蚀部位分析和对策

煤直接液化装置在高温、高压、临氢条件下运行,气、液、固三相流几乎贯穿工艺全过程,磨蚀状况尤为严重。本文根据煤直接液化磨蚀典型区域的分布状况,分析了磨蚀物的来源,提出了材质升级、内件优化、操作优化等延缓磨蚀的有效对策,从而将原仅使用几百小时的关键部位延长至数千小时,确保了装置的安全稳定生产。

The Research on Optimization of the Multiphase Flow Field of Biogas Plant by Using CFD Software

The inner flow field of a biogas plant can be optimized by agitating the feedstock to be evenly distributed for a rising biogas production rate. A hydraulic agitator can be installed in the digester with outlets far above the bottom. Hydraulic mixing is essential in a solid-liquid two-phase flow process, in which large solid particles can be found at the initial stage and turn to being high-concentration viscous liquid （non-Newtonian fluid）. A 0.75 m3 digester was taken as a case study with CFD （computational fluid dynamics） software. The basic pattern was simulated by using water as the medium and the pattern of pseudo plastic fluid state was simulated by the Euler-Euler Model, then the effect of optimized design with bottom inflow and high dispersed outlets could be verified. Viewed from the mixing effects, the velocity of 0.6 m/s is better than l m/s for water medium, while 1 m/s better than 0.6 m/s for pseudo plastic fluid medium.

DN2500氨合成塔优化改造运行总结

DN2500氨合成塔在更换南京聚拓科技有限公司的DC—C型内件后，运行中存在合成塔内换热器气量无法进一步增加、催化剂第一轴向层温度偏低、出塔温度不易凋节等问题，针对这些问题采取了有效的优化手段，优化后氨合成回路的吨氨电耗较之前有所下降，合成废锅产气最也较之前有所提高，产生不错的经济效益。