A mathematical model was established, which is a three-dimensional and steady-state heat transfer and flow process mathematical model in top combustion stove. Then the temperature field and velocity field were obtained according to the model. Based on these, the temperature and velocity fields were discussed under the conditions of various air and gas inlet position. The results show that when the gas entrance in single-channel mode, the liquid's temperature and velocity distribution was uneven extremely and tilted toward the furnace wall of gas entrance side in the hot blast stove. On the other hand, when the air and gas entrance in interval mode, the liquid's temperature and velocity distribution is uniform, and this mode is beneficial to the top combustion stove to work steadily.

The deacidification of Liaohe straight-run diesel with combination solvent in the alcohol-ammonia process was carried out. Effects of solvent composition, demulsifier type and amount and the operating conditions on the deacidification ratio and the yields of diesel were all studied. The suitable mass composition of solvent mixture is 5% NH ₃·H ₂O, 50% ethanol, 45% water and 0.4 μL NP6 demulsifier for 20 mL diesel. Operating conditions are as followings, the volume ratio of solvent to diesel 0.2, the treatment temperature 50 ℃, the processing time 60 seconds and the phase separation time is 20 minutes. The acid value of the diesel after deacidification comes up to the standard GB/T264-83 (acid value<5 mg(KOH)/(100 mL)). The solvent can be recycled by distillation and no waste generates, the naphthenic acid can be obtained by heating the distillation residues.

SO2-4/ZrO2-SBA-15 catalyst was directly synthesized and characterized with XRD, BET and NH3-TPD. The results showed that this catalyst presents the typical mesoporous structure of SBA-15 and super acidity. This catalyst was used in the synthesis of ethyl tertiary butyl ether (ETBE) with ethanol and tert-butyl alcohol as raw materials on the fixed bed reactor. Its catalytic activity turns out superior to some other kinds of microporous zeolites, such as ZSM-5, USY and mordenite.