NOVELTY - Preparation system for biomass briquette, comprises: feeding port equipped with grizzly screen for separating large piece, primary cleaning sieve for removing sieve hemp rope, paper, stone and impurities; cutting chip machine for cutting big bark into sheet; crusher for crushing the sheet into powder; hot air furnace for producing dry heat to the drier; drier for drying biomass powder, and controlling moisture of 10 to 20% in the powder; hoisting machine for lifting the powder material; permanent magnetic cylinder for absorbing metal material; and storage hopper for storing the biomass powder.    USE - Used as a preparation system for biomass briquette.    ADVANTAGE - The system: utilizes agriculture and forestry waste as raw material; has energy density, which is ten times larger than the pre-processing; is convenient to transport and store; has high combustion efficiency; is further equipped with multiple filter to effectively reduce air pollution; and comprises briquette with automatic packer for realizing fully automatic production.    DETAILED DESCRIPTION - Preparation system for biomass briquette, comprises: feeding port equipped with grizzly screen for separating large piece, primary cleaning sieve for removing sieve hemp rope, paper, stone and impurities; cutting chip machine for cutting big bark into sheet; crusher for crushing the sheet into powder; hot air furnace for producing dry heat to the drier; drier for drying biomass powder, and controlling moisture of 10 to 20% in the powder; hoisting machine for lifting the powder material; permanent magnetic cylinder for absorbing metal material; buffer recycling bin for temporary storage of manufactured biomass powder; storage hopper for storing the biomass powder and granules; feeding machine for quantitative feeding into the granulating machine; additive dispenser for quantitative distributing and adding of additive from the feeding machine, granulator for pressing biomass powder into particles, cooling tower for cooling the biomass particles; packer for packing the finished product grain, a vibration grading sieve for filtering graded biomass particles according to size; buffer hopper for delaying discontinuous feeding and dust removing device comprising a dust remover and cyclone separator. The feeding port with primary cleaning sieve is set between scraping plate conveyor, and the chipping machine and disintegrator is set between belt conveyor. The primary cleaning sieve and dryer is set between spiral conveyor, and the dryer or crusher with hoisting machine is set between belt conveyor. The hoisting machine with buffer recycling silo or hopper is set between scraping plate conveyor, and the cooling tower is connected with the lifter is set between the belt conveyer. The automatic packer or the buffer hopper outlet is set between belt conveyor, and the feed opening, primary cleaning sieve and crusher is set between the dust outlet of the dust remover, and the cooling tower is set the between dust outlet of the cyclone separator.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of preparation system for biomass briquette.