In order to improve the methane storage in porous media under mild conditions, the storage characteristics of methane in Mil⁃101 (Cr) were studied based on adsorption water method.MIL⁃101 (Cr) was prepared and characterized. Methane adsorption experiments were performed at 271.15 K and 0～7.0 MPa with different water contents. The particle size of the synthesized material was uniform, grain size range was 100～150 nm, and almost without impurities. The pore size was mainly distributed in the range of 1.7 nm to 3.6 nm. The results of adsorption experiments show that: MIL⁃101 (Cr) adsorbs more methane under the condition of water, and with the increase of the water content, the amount of methane adsorption increases. The pressure required for nucleation in porous media is higher than that for bulk system, and the greater the water content is, the higher the critical pressure is. The MOF material used in the experiment still has good adsorption capacity after repeated regeneration. The research results have certain significance for increasing the natural gas storage capacity.

The application of M⁃MOF⁃74 series in CO ₂ removal of natural gas was studied. The skeleton model of M⁃MOF⁃74 was established. The adsorption of pure CO ₂ gas and CO ₂/CH ₄ mixed gas in M⁃MOF⁃74 series adsorbent was calculated by GCMC method. The results showed that the order of adsorption of CO ₂ by M⁃MOF⁃74 adsorbent was Mg⁃MOF⁃74 > Ni⁃MOF⁃74 > Co⁃MOF⁃74 > Fe⁃MOF⁃74 > Cr⁃MOF⁃74 > Mn⁃MOF⁃74.When adsorbing mixed gases, the adsorption amount of CO ₂ by each adsorbent is consistent with that of pure CO2 adsorption, and the adsorption amount of CH ₄ is: Mg⁃MOF⁃74>Ni⁃MOF⁃74≈Co⁃MOF⁃74≈Fe⁃MOF⁃74≈Cr⁃MOF⁃74≈Mn⁃MOF⁃74. The law of isosteric heat of gas on M⁃MOF⁃74 is the same as that of adsorption capacity, indicating that the interaction between gas and M⁃MOF⁃74 is the main factor affecting the adsorption amount. The selectivity of each adsorbent to mixed gas: Ni⁃MOF⁃74>Co⁃MOF⁃74>Fe⁃MOF⁃74>Mn⁃MOF⁃74>Cr⁃MOF⁃74>Mg⁃MOF⁃74. Comprehensive comparison of CO ₂ adsorption capacity, regeneration energy consumption, selectivity coefficient and other parameters, Ni⁃MOF⁃74 is more suitable for the adsorption and separation of CO ₂ in natural gas.

The oil sand water agent was optimized, and the Inner Mongolia Tumuji oil sand was taken as the experimental object. The effects of reagent concentration, reagents sand ratio, mixing time, mixing temperature to the tailings residual oil rate were investigated. According to Tumuji oil sands, the results show that under the conditions of reagent concentration of 3.50%, agent sand ratio of 0.4∶1.0, mixing time of 25 min, mixing temperature of 90 ℃, the tailings residual oil rate can reach 0.71%. The improvement reduces the water agent consumption and the residual oil rate of the tailings.

The subject of experiment is oilsandsoil with high mechanical impurity. The study on the enhanced removal of mechanical impurities in oilsandsoil was carried out by ultrasonicsedimentation method. The effect factors including ultrasonic separation time, proportion of coking diesel oil, sedimentation time and sedimentation temperature were studied, respectively. The suitable conditions of demulsification and deimpurity in Indonesia's oilsandsoil were investigated by orthogonal experiment. The experimental results show that compared with the traditional sedimentation method, the removal rate of mechanical impurities in oilsandsoil is increased by more than 10% by ultrasonicsedimentation method. With the increase of the proportion of coking diesel oil, sedimentation time and sedimentation temperature, the proportion of mechanical impurities in oil sands decreased and the removal rate of mechanical impurities gradually increased. The proportion of coking diesel oil was the most important factor on the mechanical impurity proportion of refined oil. The optimum conditions for the removal of mechanical impurities by ultrasonicsedimentation method are as follows: the sedimentation temperature of 80 ℃, sedimentation time of 4.4 h, ultrasonic cleaning time 10.4 min and the mass proportion of coker diesel oil of 30.9%. Under the optimal conditions, the minimum mechanical impurity in the oilsandsoil was 0.26%.

The software Pro/E was adopted to create a three-dimensional physical model of the virtual prototype of a single bucket backhoe hydraulic excavator work device. The model was transferred into ADAMS to build a virtual prototype of the work device. A work cycle of excavator work device, as well as the tangential force, the normal force and the gravitational force of the materials was successfully simulated by using the function step. With the simulation, load-time curves of three hinge points whose articulated stresses are more complex were obtained. The research has provided the basis for the design of the excavator devices.