2results about How to "Achieve leak" patented technology

The application provides a reduction tail gas filtering system and a dust collecting device, and relates to the technical field of chemical production. The reduction tail gas filtering system comprises a sealing part, a first through hole is arranged at the top of the outer side of the sealing part, the sealing part is connected with a dust separation device through a first pipeline, the dust separation device is connected with a filtering device through a second pipeline, and the positions of the dust separation device and the filtering device are higher than the position of the sealing part; a dust bag is arranged in the sealing part, the dust bag comprises gas phase hot silane and silicon powder, the silicon powder comprises first type silicon powder, second type silicon powder and third type silicon powder; the dust separation device is used for separating the gas phase hot silane and the third type silicon powder in the first mixture from the first mixture and conveying them to the filtering device; and the filtering device is used for separating the gas phase hot silane and the third type silicon powder. The application can provide a closed reduction tail gas filtering system for the secondary collection stage of silicon powder and prevent coarse particle dust from accumulating.

This application provides a vehicle control method and a vehicle system. The catalyst used in the vehicle's SCR reactor includes a vanadium-based catalyst. The method includes: determining a target turbine inlet temperature corresponding to the current first parameter as a target turbine inlet temperature based on a first predetermined relationship and a current first parameter; calculating a target turbine temperature drop corresponding to the current second parameter as a target turbine temperature drop based on a first model and a current second parameter, wherein the first model is a model characterizing the correspondence between the second parameter and the turbine temperature drop; determining a corresponding SCR inlet temperature based on the second predetermined relationship, the target turbine inlet temperature, the target turbine temperature drop, the current urea injection quantity, the current exhaust gas heat transfer coefficient, and the current pipeline temperature of the transmission pipeline, thereby obtaining the target SCR inlet temperature; and controlling a third parameter of the vehicle based on the target SCR inlet temperature and a preset SCR inlet temperature, such that the controlled actual SCR inlet temperature is lower than the preset SCR inlet temperature.