The calculation models of electric field and temperature field in the continuous graphitization furnace were established. The thermoelectric coupling calculation of the graphitization process was carried out by using the numerical calculation method. Then the distribution of electric field and temperature field in the furnace was obtained. The results show that the heating area of the graphitization furnace is mainly concentrated between the two electrodes. The distribution trends of electric field intensity and current are the same, and the high values of both are distributed near the electrode. The high temperature region is distributed in the middle and lower part of the two electrodes, and the temperature can reach above 2 400.0 ℃. However, the size of the high temperature region is directly related to the electrode parameters. With the narrowing of electrode distance, the high temperature region expands, the temperature peak increases and the temperature raising level increases. With the increase of electrode diameter, the high temperature area expands and the peak temperature increases. With the increase of electrode insertion material length, the high temperature area expands, the temperature peak increases and the temperature raising level decreases.

TG was used to study the thermogravimetric behavior of Fushun oil shale at different heating rates in argon atmosphere. Four thermal kinetic models, DAEM model, Coats⁃Redfern method, FWO method and Doyle method, were compared and analyzed. The results show that the results of different dynamic model analysis are different: Coats⁃Redfern method, activation energy (E) has little change, and E belongs to the average value in a certain temperature range, which increases with the increase of heating rates as a whole. E is 109.40 kJ/mol when the heating rate is 20 ℃/min. The E of the DAEM model, the Doyle method, and the FWO method all increase with the increase of conversion rate. In addition, the E obtained by the DAEM model and the FWO method are relatively close, the DAEM model has the highest coefficient of determination. Therefore, the DAEM model is the most suitable for the kinetic analysis of Fushun oil shale pyrolysis among four thermodynamic analysis methods.

Since the 1990s, regenerative flue gas waste heat recovery unit of high temperature air combustion technology was used widely in the steel, iron, glass and molten aluminum industry. But the application on the vapor injection boiler in oil field was rarely reported. The principle of the regenerative combustion technology was introduced. Fuel efficiency, energy saving rate and steam production mass rate of the steam injection boiler were respectively calculated under the condition of the same fuel, furnace, furnace outlet smoke temperature using the conventional combustion technology and regenerative combustion technology. The results show that after applying the regenerative combustion technology, the boiler could not only save energy and improve fuel efficiency, but also improve the steam production mass rate. At the same time, it also could realize the use of lowergrade fuels. According to the characteristics of steam injection boiler, regenerative combustion technology could be completely applied to the steam injection boiler.

The wasting of the superheated steam or heating the oil reservoir not sufficiently might be caused by the uncertainty of steam injection period during the steam soak, therefore, and a two-dimensional, unsteady state mineshaft-stratum-oil reservoir mathematical model was established, and the temperature fields of the stratum and the oil reservoir were analyzed. Furthermore, the influences of steam injection period to the heat affected radius during the steam soak were discussed. The results show that the heat affected radius of the oil reservoir increases with steam injection period duration and reaches the maximum when the steaming for 5 d, then nearly no longer changed after that. The heat in the oil reservoir began to transfer to the stratum when the steaming for 3 d, and the temperature fields of the stratum and the oil reservoir are nearly the same for 6 d. The steam injection period should be controlled in 4~5 d during the steam soak.