USE OF GAS OIL FRACTIONS FROM SECONDARY OIL REFINING PROCESSES AS A RAW MATERIAL COMPONENT FOR THE PRODUCTION OF OXIDIZED BITUMENS
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Kazan National Research Technological University
NIC «Bitumnye materialy» OOO «Gazpromneft' - Promyshlennye Innovacii»
NIC «Bitumnye materialy» OOO «Gazpromneft' - Promyshlennye Innovacii»
2.
KNITU
3.
KNITU
4.
Kazan National Research Technological University
5.
NIC «Bitumnye materialy» OOO «Gazpromneft' - Promyshlennye Innovacii»
6.
NIC «Bitumnye materialy» OOO «Gazpromneft' - Promyshlennye Innovacii»
7.
Kazan National Research Technological University
Kazan, Russian Federation
Kazan, Russian Federation
Type:
Article
Pages:
from 28
to 33
Status:
Published
Received:
20.03.2026
Accepted:
20.03.2026
Published:
05.05.2026
Language:
Russian
Keywords:
VACUUM RESIDUE, BITUMEN, HEAVY COKING GAS OIL, HEAVY CATALYTIC CRACKING GAS OIL, OXIDATION
Abstract:
This article considered the possibility of using the heavy coking gas oil and the heavy catalytic cracking gas oil, a by-product of oil refining, as a component of raw materials for the production of oxidized bitumen in accordance with GOST 33133-2014. In the study the parameters of the oxidation process, including temperature, air flow rate and duration of oxidation in order to obtain bitumen of the required quality were studied. The obtained product quality was assessed by the following indicators: needle penetration depth, softening temperature, brittleness temperature, extensibility, dynamic viscosity, as well as indicators characterizing its thermo-oxidative stability. The influence of gas oil fractions of secondary processes on the properties of the obtained bitumen as a colloidal-dispersed system is estimated. Based on experimental data, the dependences of changes in quality indicators on the technological conditions of oxidation and the content of gas oil fractions in raw materials are obtained. It has been established that the production of bitumen by direct oxidation of tar, as well as by oxidation of mixed raw materials from tar and gas oil fractions of secondary processes, meeting the requirements of GOST 33133-2014 in terms of heat resistance for the corresponding bitumen grades is not possible. However, with an increase in the content of heavy catalytic cracking gas oil in the raw material in the range of 0-10% by weight. There is an improvement in the indicators characterizing the thermal and oxidative stability of bitumen. Involvement of up to 10% by weight of heavy coking gas oil in the oxidation process. It does not significantly affect the quality of the product obtained, however, with an increase in the concentration of THC in the oxidation feedstock, an increase in the dynamic viscosity of oxidized bitumen is observed. These factors emphasize the prospects of using gas oil fractions of secondary thermal and catalytic refining processes in the road bitumen production.
This article considered the possibility of using the heavy coking gas oil and the heavy catalytic cracking gas oil, a by-product of oil refining, as a component of raw materials for the production of oxidized bitumen in accordance with GOST 33133-2014. In the study the parameters of the oxidation process, including temperature, air flow rate and duration of oxidation in order to obtain bitumen of the required quality were studied. The obtained product quality was assessed by the following indicators: needle penetration depth, softening temperature, brittleness temperature, extensibility, dynamic viscosity, as well as indicators characterizing its thermo-oxidative stability. The influence of gas oil fractions of secondary processes on the properties of the obtained bitumen as a colloidal-dispersed system is estimated. Based on experimental data, the dependences of changes in quality indicators on the technological conditions of oxidation and the content of gas oil fractions in raw materials are obtained. It has been established that the production of bitumen by direct oxidation of tar, as well as by oxidation of mixed raw materials from tar and gas oil fractions of secondary processes, meeting the requirements of GOST 33133-2014 in terms of heat resistance for the corresponding bitumen grades is not possible. However, with an increase in the content of heavy catalytic cracking gas oil in the raw material in the range of 0-10% by weight. There is an improvement in the indicators characterizing the thermal and oxidative stability of bitumen. Involvement of up to 10% by weight of heavy coking gas oil in the oxidation process. It does not significantly affect the quality of the product obtained, however, with an increase in the concentration of THC in the oxidation feedstock, an increase in the dynamic viscosity of oxidized bitumen is observed. These factors emphasize the prospects of using gas oil fractions of secondary thermal and catalytic refining processes in the road bitumen production.
Keywords:
VACUUM RESIDUE, BITUMEN, HEAVY COKING GAS OIL, HEAVY CATALYTIC CRACKING GAS OIL, OXIDATION
VACUUM RESIDUE, BITUMEN, HEAVY COKING GAS OIL, HEAVY CATALYTIC CRACKING GAS OIL, OXIDATION
