Liquid Ring Vacuum Pump and Steam Vacuum System
This paper introduces the application of liquid ejectors in the vacuum system of the vacuum tower in the atmospheric and vacuum distillation unit of Darni Company, compares the commonly used steam vacuum and liquid vacuum technologies in China, and focuses on the advantages of liquid vacuum technology in stable production and reducing wastewater discharge. Practice shows that the application of liquid ejectors reduces processing costs and shortens the processing route,...
Cited by 15
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Application of Liquid Ring Vacuum Pump in Atmospheric and Vacuum Distillation Unit
Through the application analysis of liquid ring vacuum pump in the vacuum system of the atmospheric and vacuum distillation unit of Shengli Oilfield Petrochemical General Plant, the working principle, renovation design scheme, and application situation of the liquid ring vacuum pump are introduced. The results show that the combined vacuum process of steam ejector pump + liquid ring vacuum pump can achieve the same vacuum effect while reducing operating costs compared to the conventional all-steam vacuum process...
Yuan Hongfei - "China Petroleum and Chemical Standards and Quality"
Cited by: 2 Published: 2012 -
Technology Selection of Vacuum System for the Top of the Vacuum Tower in a 10 Million Ton Level Atmospheric and Vacuum Distillation Unit
This paper analyzes the selection of technical schemes for the vacuum system at the top of the vacuum tower by comparing the application of process technologies for the vacuum system at the top of the vacuum tower in large domestic atmospheric and vacuum distillation units.
Xie Hui - "China Petroleum and Chemical Standards and Quality"
Cited by: 0 Published: 2016 -
Application of Liquid Ring Vacuum Pump in Atmospheric and Vacuum Distillation Unit
Abstract: This paper introduces the working principle, process flow, and application of the liquid ring vacuum pump. The application results of the liquid ring vacuum pump in the vacuum system of an 8.0 Mt/a atmospheric and vacuum distillation unit show that the combined vacuum process of liquid ring vacuum pump and steam vacuum system can give full play to their respective advantages. By comparing the operation of two different modes of the third-stage vacuum system, under the same vacuum tower...
Cited by: 16 Published: 2008
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Revamping of the Vacuum System at the Top of the Vacuum Tower in a 4.5 Million Ton Atmospheric and Vacuum Distillation Unit
Abstract: Due to the aging of the vacuum booster at the top of the vacuum tower in the 4.5 million tons/year atmospheric and vacuum distillation unit of Yangzhou Darni Company, the vacuum efficiency at the top of the vacuum tower decreased, affecting the normal operation of the unit. After the technical renovation of updating the steam ejector and adding a water ring vacuum pump after the second-stage ejector, which serves as a backup for the third-stage steam ejector, the system operates well, and the vacuum degree at the top of the vacuum tower...
Ou Jiankui - "Liaoning Chemical Industry"
Cited by: 0 Published: 2016 -
Analysis of Factors Affecting the Vacuum System at the Top of the Vacuum Tower
From the aspects of power steam, condenser, and compression ratio of the ejector, the main factors affecting the vacuum degree and energy consumption at the top of the vacuum tower in the atmospheric and vacuum distillation unit are analyzed. Through the calculation of the vacuum system, the reasonable compression ratios of each stage of the vacuum equipment in the steam vacuum and steam + liquid ring pump combined vacuum systems are studied.
Cited by: 0 Published: 2018
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Study on Heat Exchanger Network of Atmospheric and Vacuum Distillation Unit
Based on the process regulations, design data, calibration reports, and operating data collected by the distributed control system (DCS) of a 3.5 million tons/year atmospheric and vacuum distillation unit in a petrochemical company, this paper uses Aspen... Before optimizing the heat exchanger network, the operating conditions of the unit are optimized first, including the optimization of the pressure at the top of the vacuum tower, the optimization of the vacuum system scheme at the top of the vacuum tower, and the optimization of heat exchanger selection; then...
Zhang Min - Dalian University of Technology
Cited by: 0 -
An Anhydrous Atmospheric and Vacuum Distillation Process and Device
The present invention provides an anhydrous atmospheric and vacuum distillation process and device. The process includes: the atmospheric tower and vacuum tower adopt a four-time vaporization feeding method. The crude oil is heated by the atmospheric furnace and then fed from the bottom of the atmospheric tower. No steam is introduced into the tower bottom. Each side-line product is heated by a reboiler. The overhead dry gas of the atmospheric tower after condensation and cooling is caustic washed; between the atmospheric tower and the vacuum furnace...
