NOVELTY - The system comprises connected stages, where the connected stages consists of: a feed bin (1) for receiving, buffering and controlling flow of carbonaceous mineral-bearing feedstock and conveying the feedstock uniformly and smoothly; a dryer (3) associated with the feed bin; a torrefaction subassembly for treating the heated, dry feedstock to produce a biocoal having an average size of particles; a particle downsizing system for preparing biocoal of a reduced size of particles with a mineral content; and a separator for separating minerals from the reduced size particles.    USE - The system is useful for producing a terrified biomass that partially replaces coal in coalfired processes (claimed) such as gasification, pyrolysis and combustion, where the biomass is obtained from carbonaceous materials such as plant biomass, carbonaceous wastes including woody biomass, agricultural wastes, forest wastes, garden residues, plastic materials and municipal solid waste, synthetic carbonaceous materials e.g. plastic polymers, animal manure, and sewage and the torrefied biomass is biocoal.    ADVANTAGE - The system is capable of economically energy efficiently and easily producing the torrefied biomass with high durability, apparent density and strength.    DETAILED DESCRIPTION - The system comprises connected stages, where the connected stages consists of: a feed bin (1) for receiving, buffering and controlling flow of carbonaceous mineral-bearing feedstock and conveying the feedstock uniformly and smoothly; a dryer (3) associated with the feed bin; a torrefaction subassembly for treating the heated, dry feedstock to produce a biocoal having an average size of particles; a particle downsizing system for preparing biocoal of a reduced size of particles with a mineral content; a separator for separating minerals from the reduced size particles with the mineral content to produce a mineral-denuded biocoal; and a compactor for agglomerating the mineral-denuded biocoal. The dryer desiccates the modified feedstock anaerobically to produce dried feedstock, and includes a heater that warms the feedstock to produce heated, dry feedstock. The feed bin includes a storage tank; a paddle conveyor mounted in the storage tank for conveying feedstock, where the conveyor collects the feedstock homogeneously from most or all parts of the storage tank; gas jet devices mounted in the tank for breaking bridges in the feedstock; a density sensor that senses the density of the feedstock; and a control system present in communication with the density sensor that operates the gas jet devices for producing feedstock that flows more readily. The gas jet devices are activated in response to a density condition in the storage tank that exceeds a desired density condition. The dryer further includes: an upstream airlock valve connected to the feed bin; a reactor (7) provided with an inner tube and an outer jacket with a source of external heating and protuberances extending from the outside of the inner tube to promote heat exchange, where the source of external heating provides a flow of hot fluid within a space between the inner tube and the outer jacket in a direction that opposes a direction of feedstock flow; a rotary paddle conveyor that is supported in the inner tube and carries the feedstock and exerts a translational and centrifugal force for promoting heat transfer to the feedstock from the source of external heating; a number (N) of oxygen sensors mounted within the reactor, where N is 0-1000; a first controller present in communication with an oxygen sensor; a downstream airlock; a moisture sensor that measures moisture content of feedstock entering the dryer and at the downstream airlock; and a second controller present in communication with the moisture sensor. The second controller adjusts the feedstock moisture content emerging at the outlet of the dryer by changing the speed and duration of rotation of the rotary paddle conveyor to produce heated, dry feedstock, where the first and second controllers are embodied in a single control unit. The first controller operates a valve that admits an inert gas into the reactor. The torrefaction subassembly further includes: a chamber; a paddle conveyor mounted within the chamber; a control system associated with the chamber for monitoring and influencing feedstock actual moisture content to ensure that actual moisture content is below a desired moisture content, where the control system includes a moisture sensor and a motor that adjusts feedstock throughput rate by changing a rotational speed and a translational speed of the paddle conveyor to achieve the desired moisture content; a mass control device to ensure mass loss that occurs within an acceptable range; a scrubbing system that partially cleans acids, which are released from the torrefaction subassembly and creates an effluent that can be re-circulated; heaters; and a recirculation system of heated gases to enhance heating efficiency. The mass control device lies in communication with an upstream and a downstream mass meter that measures mass before feedstock enters the torrefaction subassembly and after the feedstock leaves the subassembly, adjusts feedstock throughput rate by changing the rotational speed of the paddle conveyor to achieve a desired mass in response to signals from the upstream and downstream mass sensors for controlling mass loss and producing a biofuel with desired characteristics that include reduced chlorine content when feedstock that contains organic chlorinated compounds is introduced into the system that is responsible for hazardous emissions. The particle downsizing system includes: a sealed enclosure with a cooler and grinder to cool and grind the feedstock to a temperature and size required by the compactor and keep oxygen below a certain level to prevent fire: a sensor to measure oxygen content; an injector for injecting inert gas into the enclosure to replace oxygen to prevent fires and ensure a controlled process; and a control system to receive a signal indicative of oxygen content from the sensor and operate the injector in response. The separator consists of a unit for flotation, coal washing, gravity separation, and interfacial flocculation separation. The compactor includes two rollers that produce binderless compacted hydrophobic biocoal with a density of 1200-1400 kg/m3 plus high durability and strength. INDEPENDENT CLAIMS are included for:    (1) a version 1 torrification system;    (2) a version 2 torrification system;    (3) manufacturing apparatus for producing a torrefied biomass; and    (4) process for producing torrefied biomass.    DESCRIPTION OF DRAWING(S) - The figure shows schematic view of a torrefaction system that produces biocoal.    Feed bin (1)    Airlock (2)    Dryer (3)    Reactor (7)    Scrubber. (8)