Use of a Membrane Air Separation System for Nitrogen Generation on an Offshore Platform

1990 ◽  
Author(s):  
J.L. Gwin ◽  
R.T. Milne ◽  
R.H. Helm ◽  
R.J. Pogers
Keyword(s):  
Offshore Platform ◽  
Air Separation ◽  
Separation System

Simulation Model for ASU Distillation Column of a 300 MW Oxy-Fuel Pulverized Coal Boiler

2014 ◽  
Vol 997 ◽  
pp. 674-677
Author(s):  
Jian Qiang Gao ◽  
Liang Jie Shen ◽  
Ning Wang ◽  
Xiang Zhao Yang
Keyword(s):  
Liquid Nitrogen ◽  
Distillation Column ◽  
Air Flow ◽  
Pulverized Coal ◽  
Air Separation ◽  
Separation System ◽  
Simulation Procedure ◽  
Pulverized Coal Boiler ◽  
Fortran Language ◽  
Coal Boiler

Based on a 300MW Oxy-fuel pulverized coal boiler,this paper established a dynamic mathematical model of air separation system distillation column, and compiled simulation procedure with the Fortran language on the platform of IMMS. With distillation column as the object of the research, it carried on a disturbance experiment about the outlet air flow of purifier and extractable volume of liquid nitrogen in lower tower. The results demonstrate that when the outlet air flow of purifier decreases, the nitrogen purity in gas is reduced by 0.39%, and the oxygen purity in liquid is reduced by 1.5%;when the outlet air flow of purifier is constant and extractable volume of liquid nitrogen decreases, the nitrogen purity in gas is increased by 0.2%, and the oxygen purity in liquid is increased by 0.06%.

Success Story of First Malaysia Flare Tips Decommissioning in Sarawak Offshore Field Platform

2021 ◽  
Author(s):  
M Sahir Ahmad Shatiry ◽  
Tajul Ekram Tajul Arif ◽  
Norhafizah Baharuddin ◽  
Firdaus Harun ◽  
M Noraznan Asmadi ◽  
...  
Keyword(s):  
High Pressure ◽  
Offshore Platform ◽  
Suitable Method ◽  
Single Type ◽  
Concept Selection ◽  
Separation System ◽  
Success Story ◽  
Ignition System ◽  
Offshore Field ◽  
Lower Deck

Abstract The project was for part production enhancement project which to cater for brownfield & greenfield project. To cater to the production (oil) increment for the brownfield project, the existing flare tips and separation system need to be upgraded with higher capacity. The inclusive project was upgrading existing. Part of the scope was decommissioning the existing flare tip and associated system, e.g., ignition panel and ignition pipe. The project will decommission the current flare tips and replaced it with new higher capacity flare tips with Low Pressure (LP) & High Pressure (HP) connection. The existing flare panel was a single-type ignition system. The existing flare tip had LP & HP tip with 8″ inch size; the weight for both tip was estimated at 300 kg. The concept selection was discussed on the suitable method to lifting down the decommissioning flare tip at the offshore platform. There were 2 suitable techniques selected at the initial of the concept selection. One was lifting down the decommissioning flare tip directly from flare boom to vessel. Another method was manual rigging of the flare tips from the flare boom to the lower deck. After several discussions and workshops, it was decided to proceed with manual rigging of the decommissioning flare tip to the safe deck area. The removal of the decommissioning flare tip was performed during turnaround. The total days for the overall activity of the decommissioning & installation of the new flare tip was 3 days, 2 days ahead from planned duration 5 days.

Next Generation Oxy-Fired Systems: Potential for Energy Efficiency Improvement Through Pressurization

2009 ◽  
Author(s):  
Bruce R. Clements ◽  
Ligang Zheng ◽  
Richard Pomalis
Keyword(s):  
Ambient Pressure ◽  
Air Separation ◽  
Greenhouse Gas Mitigation ◽  
Efficiency Improvement ◽  
System Efficiency ◽  
Separation System ◽  
Power Requirement ◽  
Energy Efficiency Improvement ◽  
Auxiliary Power ◽  
Pressurized Combustion

Oxy-fired combustion has been identified as a key technology needed for greenhouse gas mitigation because it is capable of producing a concentrated CO2 stream suitable for sequestration. This technology as applied to pulverized coal systems has recently been brought to a near-commercial status with several key world-wide demonstrations. A barrier to its adoption has been the large additional auxiliary power required for oxygen production and CO2 compression which results in low overall system efficiency. There have been various strategies proposed to address these efficiency issues. A very promising concept is the use of pressurized combustion in order to increase the system efficiency. The use of pressure increases the power requirement of the air separation system. However, pressurization increases the boiler and steam side efficiencies while decreasing the power requirement for the CO2 compression system. The use of pressure will also affect the performance and size of each piece of equipment within the system. This paper describes the efficiency benefit of using pressure as compared with a baseline ambient pressure oxy-fired system and a typical air-fired system. The technical aspects of various system layouts are presented, the overall efficiency is evaluated and the merits of specific configurations are discussed. Design issues of equipment associated with the fuel supply, furnace, ash removal, heat transfer and flame moderation systems are presented.

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