Evaluation of combustion models for determination of refinery furnaces efficiency

Cala, O. M; Meriño, Lourdes; Kafarov,; Saavedra, Jaqueline

doi:10.4067/s0718-33052015000300012

Cited by 4 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, excess air increases and reduces the flame temperature under both conditions. This is similar to the reports made by[15][16][17][18]. It is because an increase in excess air triggers the nitrogen content of the combustion product.…”

supporting

confidence: 89%

Thermodynamic Simulation of Producer Gas Combustion from Biomass Gasification

Vidian

Hakim

2022

EAI Endorsed Trans Energy Web

View full text Add to dashboard Cite

The use of new and renewable energy for the application on gas burners is beneficial for the environment. This study aims to determine the effect of excess air during the combustion of producer gas from biomass gasification to release heat used as a fuel gas burner. Simulations are carried out by applying mass and energy balance, showing that an increase in excess air will decrease the non-adiabatic and adiabatic flame temperature. The result showed that an increase in excess of air reduces the amount of heat released to the environment for the same flame temperature. The maximum adiabatic flame temperature is at 1725.430C, while the non-adiabatic ranges from 600 to 8000C. Furthermore, heat is released in the range of 20.1 kW to 28.8 kW, and excess air from 0 to 40%.

show abstract

supporting

confidence: 89%

Thermodynamic Simulation of Producer Gas Combustion from Biomass Gasification

Vidian

Hakim

2022

EAI Endorsed Trans Energy Web

View full text Add to dashboard Cite

show abstract

“…Adjust functions in UniSim were used to calculate the required flowrates of fuel and air based on an oxygen excess in the flue gas of 2 mol%. This concentration is used industrially to ensure complete oxidation of the fuel [21]. Oxygen concentration was then varied from 21 to 100 mol% and the fuel consumption was determined.…”

Section: Methodsmentioning

confidence: 99%

Enriched Oxygen for Crude Oil Preheating in Petroleum Refining

Alqaheem

Alomair

2021

International Journal of Thermodynamics

View full text Add to dashboard Cite

The crude distillation unit is one of the energy-intensive processes in the refinery. This is because of the crude preheater that suffers from excessive energy loss due to the use of air in the combustion furnace. Alternatively, fuel combustion by enriched oxygen can improve heat efficiency, minimize fuel consumption and reduce emissions. In this paper, enriched oxygen has been simulated by UniSim for preheating Kuwaiti crude in one of the distillation columns in the Clean Fuels Project. Results show that the use of 30 mol% of concentrated oxygen reduced fuel consumption by 5%. Carbon dioxide emissions were also minimized by 22,240 tons per year. A membrane system made from perfluoropolymer was simulated for the production of 5,298 tons of enriched oxygen (per day) and it required an area of 39,000 m 2 with a capital investment of 6.9 million $.

show abstract