Abstract: Disclosed are a method and an electronic device for identifying a device. The method mainly includes: when starting an application program, obtaining a target file and a screen size of a device, wherein the target file is configured to record a wired Media Access Control (MAC) address of the device; and determining a device type of the device according to the target file and the screen size.

Abstract: A method for adjusting a video window based on multi-touch control and an electronic device thereof is disclosed. The method includes: receiving a touch control signal, determining that the touch control signal is a multi-touch control signal, and determining that start positions of at least two-touch control signals in the multi-touch control signal are located with the video window; acquiring touch control operations of a user in at least two different directions, the touch control operations in at least two different directions including a first operation and a second operation; and dragging and zooming the video window according to the touch control operations in the two different directions.

Abstract: The present invention falls within the field of purifying oil-laden wastewater, which provides a method for purifying coke-cooling wastewater in a delayed coking process in petroleum chemical field. The method comprises the following steps: (a) cooling the coke-cooling wastewater produced in a delayed coking process to 5-55° C. under 0.1-0.25 MPa absolute pressure, to obtain cooled coke-cooling wastewater; (b) subjecting the cooled coke-cooling wastewater to solid-liquid separation, to obtain a coke breeze phase and a liquid phase; (c) further separating the obtained liquid phase, to obtain an oil phase and a water phase; and (d) further discharging water from the obtained oil phase, to obtain the separated oil phase. The present invention also provides an equipment for carrying out the method.

Abstract: The present invention falls within the field of purifying oil-laden wastewater, which provides a method for purifying coke-cooling wastewater in a delayed coking process in petroleum chemical field. The method comprises the following steps: (a) cooling the coke-cooling wastewater produced in a delayed coking process to 5-55° C. under 0.1-0.25 MPa absolute pressure, to obtain cooled coke-cooling wastewater; (b) subjecting the cooled coke-cooling wastewater to solid-liquid separation, to obtain a coke breeze phase and a liquid phase; (c) further separating the obtained liquid phase, to obtain an oil phase and a water phase; and (d) further discharging water from the obtained oil phase, to obtain the separated oil phase. The present invention also provides an equipment for carrying out the method.