Abstract: Process for upcycling a waste material to form alkylaromatic compounds is described herein. The process typically includes the steps of feeding a waste material containing hydrocarbon polymer(s) into a reactor containing a catalyst therein, and operating the reactor at a sufficient temperature for a sufficient period of time to convert the hydrocarbon polymer(s) to a liquid and/or wax product containing alkylaromatic compound(s). Each of the alkylaromatic compound(s) contains at least 10 carbon atoms. The catalyst contains a transition metal or a mixture of a transition metal and another metal. Optionally, the catalyst is dispersed on the surface of a support. The product may contain other unsaturated compounds, such as olefins. Typically, the reactor operates at a temperature in the range between 250° C. and 350° C. The total selectivity of the process to form the one or more alkylaromatic compounds is typically between 50 mol % and 95 mol %.

Abstract: Coal rock three-dimensional strain field visual system and method are provided under a complex geological structure. The system includes a stress condition simulation system and a strain monitoring system. The stress condition simulation system includes a similar simulation experiment rack, a loading system and a circular slideway. The method includes preparing a 3D printing wire, printing a strain visual similar model, simulating a stratum dip angle and a gas-containing condition, applying stress fields, recording a cracking and dyeing condition of microcapsules inside the model, and the like. The system can realize tracing the generation and development of internal cracks in simulation models with complex geological conditions, and tracing the three-dimensional movement of internal ink dots to draw four-dimensional images of displacement fields.

Abstract: Coal rock three-dimensional strain field visual system and method are provided under a complex geological structure. The system includes a stress condition simulation system and a strain monitoring system. The stress condition simulation system includes a similar simulation experiment rack, a loading system and a circular slideway. The method includes preparing a 3D printing wire, printing a strain visual similar model, simulating a stratum dip angle and a gas-containing condition, applying stress fields, recording a cracking and dyeing condition of microcapsules inside the model, and the like. The system can realize tracing the generation and development of internal cracks in simulation models with complex geological conditions, and tracing the three-dimensional movement of internal ink dots to draw four-dimensional images of displacement fields.