Solid fuel pulverizing device and power plant provided with the same and method for pulverizing solid fuel

• Main Authors: SAWA SHOGO, MATSUMOTO SHINJI, YAMAGUCHI SOTARO, UCHIDA HIDECHIKA, KURIHARA SEIYA
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2020
• Subjects: AIR SUPPLY; BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; DRAUGHT-INDUCING; FEEDING FUEL TO COMBUSTION APPARATUS; HEATING; LIGHTING; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; MILLING GRAIN; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; PREPARATORY TREATMENT OF GRAIN FOR MILLING; REGULATING OR CONTROLLING COMBUSTION; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; STEAM BOILERS; STEAM GENERATION; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS; TRANSPORTING; WEAPONS

Provided is a solid fuel pulverizing device capable of supplying a pulverized fuel that is pulverized stably to a boiler even when a biofuel is used. The solid fuel crushing device is provided with: arotary table; a crushing roller for crushing the biofuel, which is a solid fuel, between the crushing roller and the rotating table; a rotary classifier that is provided with a plurality of blades that stand in the circumferential direction centered on the axis of rotation, and classifies the biofuel pulverized by the pulverizing roller; and a control unit for controlling the rotational speed ofthe rotary classifier, wherein the control unit substantially controls the rotational speed of the rotary classifier across the operating range of a boiler to which the classified biofuel is suppliedfrom the rotary classifier. 本发明提供一种固体燃料粉碎装置，即使使用生物燃料时，也能够向锅炉供给稳定粉碎的微粉燃料。所述固体燃料粉碎装置具备：旋转工作台；在与旋转工作台之间粉碎作为固体燃料的生物燃料的粉碎辊；具备沿着以旋转轴线为中心的圆周方向立设的多个叶片，对于由粉碎辊粉碎之后的生物燃料进行分级的旋转式分级机；控制旋转式分级机的转速的控制部，控制部跨越从旋转式分级机供给分级后的生物燃料的锅炉的运转范围而大体一定地控制旋转式