石油炼制与化工 ›› 2012, Vol. 43 ›› Issue (11): 31-35.

• 催化剂 • 上一篇    下一篇

基于熔盐加热减压渣油的减压深拔实验研究

张兆前,周华群,董卫刚,白跃华   

  1. 中国石油天然气股份有限公司石油化工研究院
  • 收稿日期:2012-02-10 修回日期:2012-03-05 出版日期:2012-11-12 发布日期:2012-10-31
  • 通讯作者: 张兆前 E-mail:baiguwang010@sina.com

EXPERIMENTAL STUDY ON VACUUM DEEP CUT TECHNOLOGY BASED ON MOLTEN SALT HEATING VACUUM RESIDUE

  • Received:2012-02-10 Revised:2012-03-05 Online:2012-11-12 Published:2012-10-31

摘要: 分析了影响减压深拔的关键因素,提出了一种基于熔盐加热减压渣油的减压深拔技术,并在某炼油厂新建中型实验装置进行实验。结果表明:熔盐加热减压渣油完全可达到对其减压深拔所需温度,并且降低了管道表面与减压渣油的温差,加热更为均匀;在减压塔入口温度415 ℃、塔底380 ℃、塔顶355 ℃,塔顶绝压0.90~0.92 kPa条件下对该炼油厂减压渣油的拔出率可达35 %。

关键词: 熔盐, 减压深拔, 减压渣油

Abstract: Factors affecting vacuum deep cut of residue oil were analyzed. A technology for vacuum deep cut based on heating vacuum residue (VR) by molten salt was introduced and put into practice on a newly built pilot plant device of a refinery. Results of pilot plant tests showed that by molten salt heating the temperature of VR could reach the required temperature for conducting vacuum deep cut, furthermore, the heating by molten salt was uniformed and the temperature difference between tube surface and VR was only a little. Under the conditions of a vacuum column feed inlet temperature of 415 ℃, column bottom temperature of 380 ℃, top temperature of 355 ℃, top absolute pressure of 0.90-0.92 kPa, the distillate yield of VR (from said refinery) by deep distillation reached 35%.

Key words: molten salt, vacuum deep cut, vacuum residue