An experimental study on the relationship of the weight loss and crack width of oil shale

الملخص EN

The effect of the time and temperature on the weight loss ratio of oil shale was studied.

Oil shale from an open-pit oil shale mine of Fushun in Liaoning Province, China was used.

The results show that crack width, length and quantity, and the weight loss rate, increase with increased temperature.

The fastest increase rate was between 400 °C to 600 °C.

The weight loss rate level tended to be flat when above 700 °C, which means the change in the weight loss ratio is not obvious.

In the process of oil shale pyrolysis, there is an optimal constant temperature time of about 8 hours.

At this time, the big, medium and small cracks within the oil shale connect.

When the number of cracks reaches its maximum, the weight loss ratio of the oil shale will also reach its maximum (21.67 %).

The condition for the highest weight loss ratio of the sample shale oil occurred under a constant heating temperature of 600 °C for 8 hours.