OPTIMIZATION OF PROCESS TEMPERATURE IN THE REACTOR AS A WAY TO REDUCE CARBON DIOXIDE EMISSIONS AT THE INDUSTRIAL DIESEL FUEL DEWAXING UNIT
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
National Research Tomsk Polytechnic University
(Division for Chemical Engineering, associate professor)
Russian Federation
Russian Federation
2.
National Research Tomsk Polytechnic University
Type:
Article
Pages:
from 88
to 93
Status:
Published
Received:
28.01.2026
Accepted:
28.01.2026
Published:
28.01.2026
Language:
Russian
Keywords:
CARBON DIOXIDE, DECARBONIZATION, GREENHOUSE GASES, REDUCTION OF CARBON DIOXIDE EMISSION, ENERGY EFFICIENCY, DEWAXING, DIESEL FUEL
Abstract:
Oil refineries are major sources of carbon dioxide emissions into the atmosphere. Reducing carbon dioxide emissions without compromising production efficiency and energy security is a priority for oil refineries. Carbon dioxide at oil refineries is formed mainly during combustion of hydrocarbon fuels in furnaces for heating various process streams. In this paper, for an industrial diesel fuel production unit, it is shown that more rational use of hydrocarbon fuel gas, namely, combustion of a smaller amount of fuel gas in the furnace for heating the feedstock of the dewaxing process, provides reducing carbon dioxide emissions by 2.4 %. Reduction in fuel gas consumption in the furnace for heating the feedstock is achieved by optimizing the temperature of the dewaxing process occurring in the reactor, which is preceded by heating the feedstock in the furnace. Calculations on a mathematical model showed that the optimal temperature of the dewaxing process occurring in the reactor is lower than the actual one by 5 - 11 °C. Carrying out the dewaxing process at the optimal temperature allows reducing the fuel gas consumption in the raw material preheating furnace by 414 - 426 tons with different fuel gas compositions during one period of winter diesel fuel production (4 months of the cold season), which is equivalent to reducing carbon dioxide emissions by 1240 - 1276 tons. The reduction in carbon dioxide emissions and the reduction in the negative impact of the industrial plant on the environment were achieved while maintaining the efficiency indicators of diesel fuel production, such as the cold filter plugging point and the yield of the product.
Oil refineries are major sources of carbon dioxide emissions into the atmosphere. Reducing carbon dioxide emissions without compromising production efficiency and energy security is a priority for oil refineries. Carbon dioxide at oil refineries is formed mainly during combustion of hydrocarbon fuels in furnaces for heating various process streams. In this paper, for an industrial diesel fuel production unit, it is shown that more rational use of hydrocarbon fuel gas, namely, combustion of a smaller amount of fuel gas in the furnace for heating the feedstock of the dewaxing process, provides reducing carbon dioxide emissions by 2.4 %. Reduction in fuel gas consumption in the furnace for heating the feedstock is achieved by optimizing the temperature of the dewaxing process occurring in the reactor, which is preceded by heating the feedstock in the furnace. Calculations on a mathematical model showed that the optimal temperature of the dewaxing process occurring in the reactor is lower than the actual one by 5 - 11 °C. Carrying out the dewaxing process at the optimal temperature allows reducing the fuel gas consumption in the raw material preheating furnace by 414 - 426 tons with different fuel gas compositions during one period of winter diesel fuel production (4 months of the cold season), which is equivalent to reducing carbon dioxide emissions by 1240 - 1276 tons. The reduction in carbon dioxide emissions and the reduction in the negative impact of the industrial plant on the environment were achieved while maintaining the efficiency indicators of diesel fuel production, such as the cold filter plugging point and the yield of the product.
Keywords:
CARBON DIOXIDE, DECARBONIZATION, GREENHOUSE GASES, REDUCTION OF CARBON DIOXIDE EMISSION, ENERGY EFFICIENCY, DEWAXING, DIESEL FUEL
CARBON DIOXIDE, DECARBONIZATION, GREENHOUSE GASES, REDUCTION OF CARBON DIOXIDE EMISSION, ENERGY EFFICIENCY, DEWAXING, DIESEL FUEL
