Fuel Briquettes Plant - 0.5 t/h

A plant with a capacity of 0.5 t/hour for the production of fuel briquettes from wet small wood waste (chips, shavings, sawdust), peat and wet agricultural waste. The raw materials are delivered by road (or a loader) and poured onto a mechanized warehouse "moving floor" (1). The stockers of the moving floor have a hydraulic drive and under its action perform reciprocating movements. The blades ("wings") of the stockers have a wedge-shaped shape, therefore, when the stockers move, the raw materials are directed at an adjustable feed rate to the chain (scraper) conveyor (2), then the raw materials are fed to the disk separator (3). On it, stones, roots and similar impurities are separated from the raw materials, which fall into a portable container (not shown in the diagram), and the raw materials through gravity flow fall into the loading section of the Drying and Grinding Unit (4). Combustion products from the heat generator (5) (more details) are also fed here, and cold atmospheric air is sucked in through the emergency ignition pipe (6) (not included in this package). Initially, combustion products and cold air are mixed, the mixing proportion is adjusted automatically, which ensures that the set temperature of the coolant is maintained. Then the coolant is mixed with wet raw materials and sucked into the Drying and Grinding Unit (4). In it, the raw materials are crushed and then dried, rising in the coolant flow to the dynamic classifier located in the head section of the Drying and Grinding Unit. The dynamic classifier, the frequency of which is set from the control panel (15), passes small and dry raw materials, and returns large and wet particles of raw materials to the rotor of the Unit, this process is repeated until the required humidity and degree of grinding of the raw materials are obtained (more details). The crushed and dried raw material (from this point on it is usually called flour) is sucked into the sedimentation cyclone (8) due to the vacuum created by the smoke exhauster. In the cyclone, the flour settles due to centrifugal force and moves downwards, and the spent heat carrier is thrown into the smoke stack (16) (not included in this package). From the cyclone, the flour is fed through a lock valve into a screw or chain conveyor (9), then goes to the hopper of the briquette press (10). Inside the hopper there is a device that prevents the flour from caking. From the hopper, the flour is sent to the briquette press (11) by a screw feeder with an adjustable feed rate. In the press, the flour first enters the pre-pressing chambers, from where it is fed into the pressing chamber by two counter-directed screws. In the pressing chamber, the flour is pressed by a movable piston (piston) into a conical fixed matrix, where under the action of high pressure a continuous briquette (hereinafter, for simplicity, "briquettes") is formed. The briquettes coming out of the press have a high temperature and are fragile, so they are sent to a tunnel briquette cooler (12). During the cooling process, the humidity of the briquettes decreases due to the evaporation of moisture, and physical and chemical changes occur in them. As a result, they acquire the necessary hardness, humidity and temperature. Moving along the cooler tunnel, which in this case is also a conveyor, the continuous briquette passes through a metal detector (13) into an automatic saw (14), where it is cut into briquettes of a given length. Then the briquettes are sent to the packaging section and the finished product warehouse (not shown). The heat generator in this configuration can be loaded with fuel both manually (through the door) and automatically - from the fuel bunker (7). The fuel bunker is replenished manually or by the automatic fuel bunker filling system (17). Optionally, the fuel bunker can be replenished by an additional conveyor from a raw material warehouse or a separate fuel warehouse (not shown).