Volume 63

The dynamic characteristics analysis of combustion chamber and coke zone of electric ignition and chemical catalytic ignition in in-situ combustion Liang He, Renbao Zhao, Haitao Ren, Jiyang Liu

Abstract

A comparative study using three-dimensional in-situ combustion experiments shows that chemical catalytic ignition (GO-1120-Fe) greatly improves combustion efficiency compared to electric ignition. Chemical ignition increases the oxygen diffusion coefficient by 35%, reaching 4.6×10⁻8 m²/s, and boosts thermal conduction power by 29%. The combustion chamber expands in an irregular serrated elliptical shape at a rate of 35.2 cm³/min, which is 43% faster than with electric ignition. Additionally, the coke zone grows 2.6 times faster under chemical ignition (7.14 cm³/min) than with electric ignition, permeability (1822-1962 10-3μm2). This research confirms that chemical ignition effectively optimizes mass and heat transfer, improving the coke zone structure and providing valuable theoretical support for the application of in-situ combustion technology.

Keywords in-situ combustion (ISC), electric ignition, chemical ignition, combustion chamber