Abstract: The present disclosure discloses a method for preparing cellulose fiber. The method includes the following steps: 1) mixing cellulose pulp with NMMO aqueous solution of a mass concentration of 60%-85%, preferably 70% to 76%, to obtain a uniform mixture; 2) subjecting the obtained uniform mixture to dewatering for swelling, dissolution, and deaerating to obtain a cellulose spinning stock solution; 3) the cellulose spinning stock solution entering into a spinning machine after being filtered and heat exchange, and entering into a coagulation system after carrying out extruding by a spinneret-pack and cooling by air, and then coagulating in a NMMO coagulating bath of a mass concentration of 50% to 72% to obtain nascent fiber; and 4) subjecting the nascent fiber to rinsing to obtain a fiber filament bundle, and then, performing subsequent-section treatment to obtain cellulose fiber.

Abstract: The present invention provides a process for preparing a cellulose solution. NMMO with a relatively low concentration and non-activated pulp are continuously mixed online, the mixed premix is dewatered in evaporation dewatering equipment until an NMMO concentration suitable for swelling is achieved, then, sufficient swelling is carried out under this condition, and the uniformly-mixed and sufficiently swelled pre-swelling solution is subjected to depressurized evaporation dewatering and dissolving by thin-film-evaporation equipment thereby obtaining a high-concentration, uniformly-dissolved and excellently-uniformity cellulose solution. The present invention further provides continuous preparation equipment for the process for preparing a cellulose solution.

Abstract: The present disclosure discloses a method for preparing cellulose fiber. The method includes the following steps: 1) mixing cellulose pulp with NMMO aqueous solution of a mass concentration of 60%-85%, preferably 70% to 76%, to obtain a uniform mixture; 2) subjecting the obtained uniform mixture to dewatering for swelling, dissolution, and deaerating to obtain a cellulose spinning stock solution; 3) the cellulose spinning stock solution entering into a spinning machine after being filtered and heat exchange, and entering into a coagulation system after carrying out extruding by a spinneret-pack and cooling by air, and then coagulating in a NMMO coagulating bath of a mass concentration of 50% to 72% to obtain nascent fiber; and 4) subjecting the nascent fiber to rinsing to obtain a fiber filament bundle, and then, performing subsequent-section treatment to obtain cellulose fiber.

Abstract: The present invention provides a process for preparing a cellulose solution. NMMO with a relatively low concentration and non-activated pulp are continuously mixed online, the mixed premix is dewatered in evaporation dewatering equipment until an NMMO concentration suitable for swelling is achieved, then, sufficient swelling is carried out under this condition, and the uniformly-mixed and sufficiently swelled pre-swelling solution is subjected to depressurized evaporation dewatering and dissolving by thin-film-evaporation equipment thereby obtaining a high-concentration, uniformly-dissolved and excellently-uniformity cellulose solution. The present invention further provides continuous preparation equipment for the process for preparing a cellulose solution.

Abstract: An apparatus for deburring boards includes a platform, on which first and second guiding rail units perpendicular to each other are fixed, a deburring unit mounted on the first guiding rail unit, a carrying unit adapted for carrying the boards and mounted movably on the second guiding rail unit perpendicular to the first guiding rail unit, and a driving unit disposed on the platform and operable to drive the carrying unit to move between a loading/unloading zone, where the carrying unit is spaced apart from the deburring unit, and a processing zone, where the carrying unit is disposed between opposite deburring members of the deburring unit so that opposite deburred edges of each board contact respectively the deburring members. The driving unit further drives the carrying unit to move back and forth within the processing zone a predetermined number of times, thereby deburring the boards.

Abstract: An apparatus for deburring boards includes a platform, on which first and second guiding rail units perpendicular to each other are fixed, a deburring unit mounted on the first guiding rail unit, a carrying unit adapted for carrying the boards and mounted movably on the second guiding rail unit perpendicular to the first guiding rail unit, and a driving unit disposed on the platform and operable to drive the carrying unit to move between a loading/unloading zone, where the carrying unit is spaced apart from the deburring unit, and a processing zone, where the carrying unit is disposed between opposite deburring members of the deburring unit so that opposite deburred edges of each board contact respectively the deburring members. The driving unit further drives the carrying unit to move back and forth within the processing zone a predetermined number of times, thereby deburring the boards.