Abstract: Disclosed is a portable computing device (1) comprising a keyboard (13) and an acoustic transducer (16, 17), the keyboard (13) comprising a key (14, 15), wherein the acoustic transducer (16, 17) is placed in the key (14, 15), and wherein the key (14, 15) comprises a sound port (150) allowing sound generated by the transducer (16, 17) to propagate.

Abstract: The present disclosure relates to a method and apparatus for prolonging a continuous operation period of a methanol-to-olefins water washing process. The method may perform micro cyclone treatment on methanol-to-olefins washing water. The method may also deliver the washing water subjected to micro cyclone treatment and oil removal to a fluidized bed separator for treatment. The method may also adjust the backwash flow to release the intercepted catalyst powder and empty the dirt holding capacity of a pore. The method may also perform three-phase separation on a gas-liquid-solid mixture subjected to backwash, returning the obtained filter media to a particle bed layer, and respectively discharging a backwashing liquid a backwashing gas which comprise a catalyst. The method may also switch the fluidized bed separator to a normal working state, completing the active regeneration of the particle bed layer, and continuing to operate.

Abstract: Disclosed are a fluidized bed separation method and device for methanol-to-olefins quenched water. The method may subject quenched water to liquid-solid separation via a micro-cyclone separator. The method may also subject clear liquid from the micro-cyclone separator to a secondary separation via a fluidized bed separator, then sending the same to an olefin separation device, then recovering some waste heat of the quenched water, and then returning the same to a quenching tower after performing heat exchange. The method may also regenerate a separation medium by reversely feeding stripping tower purified water or quenched water, so as to release catalyst particles absorbed by the separation medium. The method may also send a catalyst slurry concentrated by the micro-cyclone separator and the fluidized bed separator to a filter-press unit for filter-press dehydration, so as to recover a catalyst.

Abstract: The present disclosure relates to a deep purification device and method for methanol-to-olefin washing water. Provided is a deep purification device for methanol-to-olefin washing water, comprising: a quench tower (1-1), a water washing tower (1-2) connected to an outlet at the top of the quench tower (1-1), a boiling bed separator (1-3) having the top thereof connected to the bottom of the water washing tower (1-2), a fiber coalescer (1-4) connected to the bottom of the boiling bed separator (1-3), and a buffer settling tank (1-5) connected to the sidewall of the boiling bed separator (1-3) at a position near the top. Further provided is a deep purification method for methanol-to-olefin washing water.

Abstract: Disclosed is a rotational flow rotation deoiling method for oil-based mud rock debris.

Abstract: The invention relates to a transmission connection mechanism of a pancake motor, which solves the technical problem that the swing of an existing pancake motor affects the motor life. The transmission connection mechanism is provided with a motor shaft, a shaft sleeve and a working shaft, wherein the shaft sleeve and the working shaft are connected by a working key, the motor shaft is provided with an internal spline, an external spline is arranged outside the shaft sleeve, the internal spline and the external spline form a spline meshing connection, and the external spline is a spherical-tooth external spline. The transmission connection mechanism of the invention can be widely applied to the transmission connection of a pancake motor.

Abstract: The invention relates to a cyclone based on inlet particle regulation. In particular, the invention provides a cyclone based on inlet particle regulation, comprising an inlet particle regulator and a cyclone, wherein the outlet of the inlet particle regulator is connected to the inlet of the cyclone, and the inlet particle regulator is used to achieve distribution of particles in the inlet cross-section of the cyclone from large to small or from small to large.

Abstract: The invention relates to a process and an apparatus for optimized combination of purification and separation of MTO reaction gas containing catalyst fine powder.