SI25600A - Method and device for torrefaction of biomass - Google Patents

Abstract

The method and apparatus of the invention in a preferred embodiment comprises a thermally insulated gas-tight chamber (10) into which one, preferably two perforated, conveyor belts (9) are installed, on which biomass torefy is carried out, a heat exchanger (16), where the gases produced during refraction, they are heated and guided into the chamber (10) by one, preferably two, conveyors. The biomass is fed to the torrefying device by a screw conveyor (2), where a perforated strip is evenly distributed through the integrated scheduling device (3). Above the strap, control flaps or grilles (5) are used to regulate the entry of toxification gases into the collecting duct (6). Barriers (8) are also provided above the upper conveyor belt, which prevent the longitudinal flow of toxification gases over the biomass conveyor belt. During biorefinery biorefining, the gases produced are led to a gas burner (15), where the flue gases are heated through the tube gearbox to heat the flue gases, which are then fed through the pipe system to the space of one or more conveyors. In order to allow the forced gas to flow through the perforated conveyor belt, a fan or an electromotor (EM) blower is installed in front of the heat exchanger (16), where the torrefying gases are heated. The flue gases exiting the heat exchanger (16), where the torrefying gases are heated, are then directed to another heat exchanger (12) in which the air (A) entering the gas burner (15) is preheated. From the heat exchanger (16), the heated flue gases are guided through the pipes in the lower and upper spaces of the conveyor belt, and in the secondary version into the conveyor spaces. The peat biomass is separated from the torrefaction device by a screw conveyor. The bottom of each conveyor is fitted with a device for cleaning the perforation of the conveyor. The torrefaction device can be made in a compact container design, allowing transport to the area where the biomass is produced.

Description

METHOD AND DEVICE FOR BORROWING BIOMASS

The field of technology

The subject of the invention relates to a method and apparatus for biomass torrefaction, where the biomass on conveyor belts is heated by torrefaction gases to the required temperature at which the biomass torrefaction takes place. Torrefaction is the thermal treatment of biomass at a temperature of 200 to 300 ° C (low temperature pyrolysis) in an inert atmosphere, where volatile biomass products are extracted from biomass in the form of torefy gases. During this process, 70% of the biomass is retained as a solid product containing 90% of the initial energy value. The product obtained is torefined biomass, which has a higher energy density than biomass, is not hygroscopic, biodegradable, easier to grind, forms into briquettes and pellets, and is safe from self-ignition, making it easier to store and transport.

View the problem

A technical problem addressed by the subject matter of this patent application is the lack of a method and apparatus for the efficient biomass toxification. Existing biomass torrefaction devices do not provide a quality product due to the uneven course of biomass torrefaction. The subject of the invention relates to a method and apparatus for biomass torrefaction, in which in a thermally insulated gas-tight chamber the biomass is heated on perforated conveyor belts by the torrefaction gases to the temperature at which the biomass torrefaction takes place. Hot torque gases are introduced into the space of the conveyor belts and pass through a perforated biomass loaded conveyor belt. In this case, part of the torrefaction gases resulting from the torrefaction is directed to a gas burner where the heat generated during their combustion is used to heat the torrefaction gases circulating in the torrefaction device by means of a built-in fan or blower. The transfer of heat from biorefined gases to biomass is carried out by the forced convection of hot biofuels. The course of torrefaction is regulated by the regulation of the velocity of the conveyor belts, the flow of the torrefaction gases through the biomass and the temperature at which the torrefaction gases circulating in the torrefaction device are heated.

The state of the art

The International Intellectual Property Register comprises a number of relevant solutions, with patent W02013003599A3 providing for biorefining of biomass in a reactor vessel at a pressure of 3 bar, and biomass in the reactor traveling through vertically loaded trays, which is significantly different from the proposed patent solution. Patent W02007078199A1 provides an upright torrefaction reactor where biomass is fed from above and torefactor leaves the reactor from below. By the side, hot gases are introduced into the reactor through the openings, which heat the biomass to the required torrefaction temperature. The technical solution described differs significantly from the proposed patent solution. US20080223269A1 envisages an endless conveyor belt, where biomass torrefaction occurs through a conduction band, that is, through a conveyor wall, which is significantly different from the proposed patent solution where convection biomass torrefaction takes place.

Description of the new solution

The device according to the invention in a preferred embodiment comprises a thermally insulated gas-tight chamber in which at least one, preferably two perforated conveyor belts are installed, on which biomass torrefaction is carried out, a heat exchanger, where the gases resulting from the torrefaction are heated and directed into the chamber by one, preferably with at least two conveyors. When biomass torefy the gases produced, they are led to a gas burner, where flue gases are heated through the tube gearbox to heat the gases, which are then fed through the pipe system to the space of one or two conveyors. In order to allow for the forced flow of torefy gases through the perforated conveyor belt and biomass, a fan or blower is installed in front of the heat exchanger, where the torefy gases are heated. The flue gases exiting the heat exchanger, where the torrefaction gases are heated, are then diverted to another heat exchanger in which the air entering the torrefaction gas burner is preheated. The biomass is fed to the torrefying device by a screw conveyor, where it is evenly distributed to the perforated strip through the integrated scheduling device. Above the strap, control flaps or bars are used to regulate the discharge of toxification gases into the collecting duct. Barriers are also provided above the upper conveyor belt to prevent the longitudinal flow of toxification gases over the biomass conveyor belt. At the end of the collecting duct, the excess of the resulting toxification gases is directed to the burner, and the remainder is channeled to the heat exchanger by means of a fan or blower, where they are heated by the flue gases of the gas burner. From the heat exchanger, the heated flue gases are piped in a preferred embodiment into the lower and upper spaces of the conveyor belt and, in the secondary embodiment, into the spaces between the conveyors. The flow of hot torque gases into the interspace of one or two conveyors is regulated according to the required torque conditions. Below the heat exchanger with which the torrefying gases are heated is a conical dust collector, which is supplied by the torrefying gases. The peat biomass is separated from the torrefaction device by a screw conveyor. Dust particles that fall through the perforated conveyor belt to the bottom of the torrefaction device are collected at the end and discharged from the torrefaction device via a conical sump. The bottom of each conveyor is equipped with a device for cleaning the perforations of the conveyor. The following will now be described in greater detail by way of the accompanying drawings and an explanation of the preferred embodiment.

Figure 1 shows a schematic of a preferred embodiment of the device according to the invention. The figure shows and indicates: tapered tank for biomass 1, screw conveyor for feeding biomass 2, device for even distribution of biomass on conveyor belt 3, biomass loaded on conveyor belt 4, flaps or grilles for regulating the flow of torefying gases coming through perforated conveyor belt and biomass 5, collecting channel of torefy gases 6, arrangement and regulation of hot torefy gas flow into the space of the upper conveyor 7, barriers to prevent longitudinal flow of torefy gases 8, perforated metal conveyor 9, thermally insulated gas-tight chamber where the torefy gas takes place 10, electromotor drive of the fan or blower EM, fresh fresh air inlet to the heat exchanger 12 for preheating the air A, flue gas outlet from the heat preheater for air preheating 11, supply of preheated air to the gas burner of the refractory gases 13, supply of the torefining gases to the gas burner 14 , pli torrefying gas burner 15, torrefying gas heat exchanger 16, conical dust collector delivered by torrefying gases 17, conical particle collector falling through the perforated conveyor belt 18, conveyor perforation device 19 and 23, conduit pipe supply of hot torrefaction gases to the thermally insulated torrefaction chamber 20, arrangement and control of the inflow of hot torrefaction gases into the space of the lower conveyor belt 21, stream of torrefaction gases through the perforated conveyor belt and through the torrefaction biomass 22, screw conveyor for removal of the torrefaction biomass 24 from the torrefaction device torrefied biomass from a screw conveyor 25.

Figure 2 shows a schematic of a secondary embodiment of the device according to the invention. The figure shows and indicates: tapered tank for biomass 1, screw conveyor for feeding biomass 2, device for even distribution of biomass on conveyor belt 3, biomass loaded on conveyor belt 4, flaps or grilles for regulating the flow of torefying gases coming through perforated conveyor belt and biomass 5, collecting channel of torefy gases 6, arrangement and regulation of hot torefy gas into the interstitial conveyor 7, barriers to prevent longitudinal flow of torefy gases 8, perforated metal conveyor 9, thermally insulated gas tight chamber 10 , electromotor drive of the fan or blower EM, fresh fresh air inlet to the preheater A heat exchanger A, flue gas outlet from the preheat heat exchanger 11, preheat heat exchanger 12, preheated air inlet to the torrefaction gas burner 13, inlet of gases into the gas burner 14, the gas torch of the torrefaction gases 15, the heat exchanger for heating the torrefaction gases 16, the conical particle collector brought by the torrefaction gases 17, the screw conveyor for separating the torrefaction biomass from the torrefaction device 26, the exit of the torrefaction biomass 25 from the screw conveyor a device for cleaning the perforations of the conveyor belt 19, a tube for supplying hot torrefying gases to an isolated torrefying chamber 20, the flow of torrefying gases through the perforated conveyor belt and through the torrefying biomass 22.

The torrefaction device in the preferred embodiment shown in Figure 1 comprises a thermally insulated gas-tight chamber 10 into which two perforated conveyor belts 9 are installed, on which the loaded biomass is transported and heated by the torrefaction gases to the temperature necessary for the easy pyrolysis of the biomass - torrefaction. The biomass, which must be of adequate granulation, is fed into a thermally insulated gas-tight chamber 10 from a conical container for biomass filling 1 with a screw conveyor 2 to a device for evenly distributing biomass to the conveyor belt 3. The conveyor drive assembly is frequency controlled to allow the residence time adjusts biomass in the torrefaction device to the required physicochemical parameters of biomass torrefaction. The torrefaction gases are discharged through the control flaps or grilles 5 into the collecting duct 6, where they are collected and led to a fan or blower with an electromotor drive EM, which exerts a forced flow through the tube register of the heat exchanger 16, where the torrefaction gases are heated and then passed through control flaps 21 and 7 into the space between the lower and upper conveyor belts. The excess toxification gas produced is led through a pipe 14 into a gas burner 15, the flue gases of which are led to the tube register of the heat exchanger 16, and then to the tube register of the heat exchanger 12, where preheating of air A is supplied to the burner 15. Cooled the flue gases are then discharged to the environment 11. In the event of too high heating temperatures of the toxification gases in the heat exchanger 16, a portion of the flue gases of the gas burner 15 is directed to the environment, which is not specifically indicated in Figure 1. One or more barriers 8 are mounted above the upper conveyor belt to prevent the longitudinal flow of the torrefaction gases, thereby allowing flaps or gratings 5 to regulate the flow of the torrefaction gases through the perforated conveyor belt and the biomass on each section between the barriers 8. In the heat exchanger, the heated torrefaction gases are fed through the pipe 20 via the control flaps 21 and 7 into the space between the lower and upper conveyor belts. By regulating the flow of the supply of heated torque gases into the space between the lower and upper conveyor belts, the process of biomass torrefaction can be regulated. The course of biomass torrefaction in the torrefaction device is monitored by measuring the temperature of the torrefaction gases above the biomass loaded on the conveyor belts, and on the basis of these data the flap 21 and 7 for the inlet of the torrefaction gases into the lower and upper spaces of the conveyor belts are regulated. In the heat exchanger 16, heated torrefaction gases, which are passed through the perforated conveyor belt and through the torrefaction biomass through the control flaps 20 and 7, and thus heated 22. The flow through the biomass on individual sections of the conveyor belt is regulated regulating the flow of torefying gases through the flaps or grilles 5. A system for cleaning the upper conveyor belt 19 and the lower conveyor belt 23 is installed to clean the perforation of the conveyor belts. and if necessary discharged from the torrefaction device. For removal of particles falling through the perforated conveyor belt, a conical particle collector 18 is made. Torrefied biomass leaving the lower conveyor belt is collected in a conical reservoir, from which it is discharged from the screw conveyor 25 with a screw conveyor 24.

It should be noted that the device according to the invention uses for the thermal process of torification as the energy of the torification gases produced during the torification of the biomass and combusted in the gas burner 15. Another energy source, such as liquefied petroleum gas, must be used to start the torification device. In the event that the temperature of the toxification gases heated in the heat exchanger 16 is too high, a portion of the hot flue gas from the gas burner 15 is discharged into the environment. When the humidity of the inlet biomass is too high, an additional source of heat is required to heat the torrefaction gases in the heat exchanger 16. An additional source of heat may be the peat biomass, which is not specifically indicated in Figure 1.

As shown in Figure 2, the device according to the invention in the secondary embodiment comprises a thermally insulated gas-tight chamber 10 into which a perforated conveyor belt 9 is mounted on which the loaded biomass is transported and heated by torefining gases to the temperature necessary for light pyrolysis of the biomass. - torrefication. The biomass, which must be of adequate granulation, is fed into a thermally insulated gas-tight chamber 10 from a conical container for biomass 1 with a screw conveyor 2 to a device for evenly distributing biomass to the conveyor belt 3. The conveyor drive assembly is frequency controlled to allow the residence time adjusts biomass in the torrefaction device to the required physicochemical parameters of biomass torrefaction. The torrefaction gases are discharged through the control flaps or grilles 5 into the collecting duct 6, where they are collected and led to a fan or blower with an electromotor drive EM, which exerts a forced flow through the tubular register of the heat exchanger 16, where the torrefaction gases are heated and then guided tubes 21 into the space of the conveyor. The excess toxification gas produced is led through a pipe 14 into a gas burner 15, the flue gases of which are led to the tube register of the heat exchanger 16, and then to the tube register of the heat exchanger 12, where preheating of air A is supplied to the burner 15. Cooled the flue gases are then discharged into the environment 11. In the event of too high heating temperatures of the refractory gases in the heat exchanger 16, a portion of the flue gases of the gas burner 15 is directed to the environment, which is not specifically indicated in Figure 2. One or more barriers 8 are mounted above the upper conveyor belt to prevent the longitudinal flow of the torrefaction gases, thereby allowing the flaps or grilles to regulate the flow of the torrefaction gases through the perforated conveyor belt and biomass on each section between the barriers individually. In the heat exchanger, heated torrefaction gases are conveyed through the pipe 21 into the space of the conveyor belt 9. The course of bioreformation of the torrefaction device is monitored by measuring the temperature of the torrefaction gases over the biomass loaded on the conveyor belt and on the basis of these data regulates the flow of torrefaction gases through the flaps or gratings. 5. In the heat exchanger 16, heated toreflection gases which pass through the perforation of the conveyor belt through the perforated conveyor belt and through the torrefaction biomass into the space of the conveyor belt 22. The conveyor system for cleaning the conveyor line 19 is installed to clean the perforation of the conveyor belt. with the torrefaction gases into the heat exchanger 16 are collected in a conical dust collector 17 and, if necessary, discharged from the torrefaction device. The torqued biomass leaving the conveyor belt is collected in a conical sump, from which it is discharged from the torrefaction device with a screw conveyor 24.

It should be noted that the device according to the invention uses for the thermal process of torification as the energy of the torification gases produced during the torification of the biomass and combusted in the gas burner 15. Another energy source, such as liquefied petroleum gas, must be used to start the torification device. In the event that the temperature of the toxification gases heated in the heat exchanger 16 is too high, a portion of the hot flue gas from the gas burner 15 is discharged into the environment. When the humidity of the inlet biomass is too high, an additional source of heat is required to heat the torrefaction gases in the heat exchanger 16. An additional source of heat may be the peat biomass, which is not specifically indicated in Figure 2. In all embodiments shown, the device according to the invention preferably comprises a thermally insulated gas-tight chamber 10 in which at least one perforated conveyor 9 is installed, on which the loaded biomass is transported and heated by torefining gases to the temperature necessary for light pyrolysis-torefication. . In both embodiments, the biomass is fed to a thermally insulated gas-tight chamber 10 from a conical container for biomass 1 with a screw conveyor 2 to a device for evenly distributing the biomass to the conveyor belt 3. The drive assembly of one or more conveyor belts is frequency controlled to allow the residence time adjusts biomass in the torrefaction device to the required physicochemical parameters of biomass torrefaction. In both embodiments, torrefaction gases are discharged through the control flaps or grilles 5 into the collecting duct 6, where they are collected and led to a fan or blower with an electromotor drive EM, which causes forced flow through the tubular register of the heat exchanger 16, where the torrefaction gases are heated and then run through the pipe into the space of one or two conveyors. The excess toxification gas produced is led through a pipe 14 into a gas burner 15, the flue gases of which are fed to the heat exchanger tube line 16 and then to the heat exchanger tube tube 12, where the air A is preheated and fed to the gas burner 15. The cooled flue gases are then guided to environment 11. In both embodiments, barriers 8 are installed above the upper conveyor to prevent the longitudinal flow of the torefy gases, thereby regulating the flow of the flush gases through the perforated liquid strip and biomass on each section between the flaps or grilles. barriers separately.

In both embodiments, the course of biomass torrefaction in the torrefaction device is monitored by measuring the temperature of the torrefaction gases above the biomass loaded on the conveyor, and on the basis of these data, the flow of torrefaction gases through the flaps or grilles is regulated. the interspace of one or more conveyors passes through a perforated conveyor belt and through a torrefaction biomass, thereby heating it. Dust particles coming from the torrefaction gases into the heat exchanger 16 are in both embodiments collected in a conical particle collector 17 and, if necessary, discharged from the torrefaction device.

The method for biomass torrefaction within an apparatus according to the invention comprises the following steps: - a thermally insulated gas-tight chamber, where biomass torrefaction takes place, - a system for supplying raw biomass 1 and 2 to the torrefaction device and the separation of the torrefaction biomass from the torrefaction device, - integration of at least one frequency-controlled perforated conveyor belt undergoing light pyrolysis of biomass - torification based on heat transfer by forced convection of hot toxification gases through biomass. - the integration of the control flaps or grilles 5 through which the gaseous gases are collected and discharged through a collecting duct 6 to a fan or blower with an electromotor drive EM, which exerts a forced stream of gaseous gases through the tubular register of the heat exchanger 16, - the integration of at least one preferably more barriers 8 above the upper conveyor belt to prevent the longitudinal flow of the torrefaction gases in order to control the flow of the torrefaction gases through the perforated conveyor belt and the biomass at each section between the barriers separately, - integrating the heat exchanger 16 into a thermally insulated gas-tight chamber to heat the torrefaction chamber flue gas emissions from the combustion of torrefaction gases in the gas burner, - integration of the heat exchanger 12 for preheating the air with flue gases from the combustion of the torrefaction gases in the gas burner, - integration of the gas torch 15 to heat the torrefaction cation gases in the heat exchanger 16 with the flue gases produced by the combustion of the toxification gases in the gas burner.

The method for biomass torrefaction within the plant according to the invention comprises the following processes: - light pyrolysis of biomass - torrection based on heat transfer by forced convection of hot torrefaction gases through biomass, - execution of forced stream of torrefaction gases via a tube register of a heat exchanger with a fan or blower with an electric motor EM, - heating of the torrefaction gases in a heat exchanger 16, where the torrefaction gases are heated to an appropriate temperature, allowing a physicochemical process of biomass torrefaction, - removal of excess torrection gases 14 from the torrefaction device and combustion in the gas burner 15, - preheating of air A for needs combustion of torrefaction gases in a gas burner 15 with waste flue gases from a heat exchanger 16 to a heat exchanger 12, - flow of hot torrefaction gases through a perforated conveyor belt and pumped biomass which is refracted during transportation through a torrefaction cation device.

It follows from the record that a light pyrolysis of biomass is carried out by the torrefaction device according to the preferred embodiment shown in Figure 1 and the secondary embodiment shown in Figure 2 - torrefication on the basis of heat transfer by forced convection of hot torrefaction gases through the biomass. As an energy source for the thermal biomass torrefaction process, the torrefaction gases generated by the biomass torrefaction process are used. For the smooth flow of biomass toxification in a topping device, the biomass must be of adequate granulation so that it does not fall through the perforated conveyor belt, to which the biomass is evenly distributed throughout the perforated conveyor belt width 3. To prevent clogging of the perforated surface of the conveyor, a system for cleaning the perforations of the conveyor shall be installed. Dried biomass must be fed into the torrefying device. In the case of excessively moist biomass, an additional source of heat is required, which can be provided by the combustion of peat biomass. The torrefaction device can be made in a compact container design, allowing transport to the area where the biomass is produced. The following are some key findings and features of the apparatus and method of the invention, which are of particular importance for determining the scope of patent protection or for making claims.

As follows, the device according to the invention may comprise one or two liquid perforated strips to which the biomass that is thermally treated to the desired product is distributed evenly. In order to achieve good product quality, the speed of one or more conveyor belts is controlled in the torrefying device, the flow of the torrefying gases with flaps or bars 5 through individual sections of the conveyor is limited by barriers 8. In the first preferred solution, the control is also carried out with flaps through which they deliver hot torque gases into the space between the first and second conveyors. The flow rate of hot torque gases through the heat exchanger 16 is controlled by the frequency control of the electric motor drive of the fan or blower. The temperature of the hot torque gases leaving the heat exchanger 16 is regulated at too high a temperature by partially releasing the flue gases from the gas burner 15 to the environment, and at too low a temperature an additional source of heat can be obtained, which can be obtained by combustion of the produced torrefied biomass. In order to maximize the thermal recovery of the torrefaction gases in the gas burner 15, the exhaust air A used for combustion of the torrefaction gases in the gas burner 15 is preheated by the waste heat of the flue gases from the heat exchanger 16 to the heat exchanger 12.

It is worth mentioning that the control of the heat fluxes in the presented system can be performed with advanced electronic control and control equipment, comprising a large number of temperature sensors, frequency controlled electric motors, which regulate the speed of screw conveyors for the feed of raw biomass into the process and the discharge of the torqued biomass from torrefaction devices, conveyor velocity, flow of torrefaction gases with a fan or blower through a heat exchanger 16, electromotor-controlled flaps or grilles and other process equipment.

Method of industrial use

All the above and described in the example of the first and second embodiments, the torrefying device is used for the thermal conversion of biomass into an energy, biochemical and physically stable form of biomass, which is used as a renewable energy source for heating, electricity production or the production of synthetic fuels and other chemical products. On the basis of the preferred or secondary embodiment exemplified, one skilled in the art may also develop different embodiments, which do not, however, circumvent the following claims.

Claims (19)

Patent claims A biomass torrefying device comprising a thermally insulated gas-tight chamber (10), two perforated conveyor belts (9), a conical container for biomass filling (1), a screw conveyor (2), a device for evenly distributing biomass onto a conveyor belt (3) ), control flaps or grilles (5), collecting duct (6), bulkheads (8), electromotor drive (EM) of fan or blower, heat exchanger (16), inlet (21 and 7) of hot torrefaction gases into the space between the first and second conveyor, gas burner (15), heat exchanger (12), where air is preheated (A) fed to the burner (15), conveyor belt perforation cleaning system, and screw conveyor (24) for extracting the biorefined biomass from torrefaction devices (25), characterized in that the torrefaction process of biomass is carried out by forced convection of hot torrefaction gases through a perforated conveyor belt and biomass, whereby the forced stream of torrefaction gases is carried out by fan or blower, and the torefining gases are heated in a heat exchanger (16) by a gas burner (15) which uses the torefying gases as energy, and the waste heat is used to preheat the air used to burn the toxification gases in the gas burner. Apparatus according to claim 1, characterized in that the regulation of the flow of torefy gases through the perforated conveyor belt and the biomass is regulated by flaps or gratings (5) built into the collecting channel (6). Apparatus according to claim 2, characterized in that the horizontal flow of the toxification gases above the upper conveyor is prevented by barriers (8). Apparatus according to claim 2, characterized in that the toxication gases are collected in the collecting duct (6) and directed towards a fan or blower driven by an electric motor (EM). Apparatus according to claim 4, characterized in that the torque gases collected in the torrefaction channel are driven by an electric motor drive (EM) of the fan or blower into the heat exchanger (16). Apparatus according to claim 5, characterized in that in the heat exchanger (16), the torque gases are heated by the flue gases of the gas burner (15). Apparatus according to claim 1, characterized in that the torch gases (15) are used as the fuel of the gas burner (15), which are fed to the gas burner (15) from the collecting channel, but can be extracted for this purpose before entering the heat exchanger (16 ) or at the exit of the heat exchanger (16). Apparatus according to claim 7, characterized in that preheated air (A) is supplied to the gas burner (15), which is heated by the waste heat of the flue gas supplied from the heat exchanger (16). ). Apparatus according to claim 6, characterized in that the heat exchanger (16) is preferably derived from a tube register, where the pipes on the heating side of the gaseous gases are ribbed to increase the contact surface where the heat transfer takes place. Device according to claim 1, characterized in that the heat exchanger (12) is preferably derived from a tube register, where the pipes on the side where the air is heated are ribbed due to the increase of the contact surface where the heat transfer is carried out. Apparatus according to claim 1, characterized in that two conveyor belts (9) are used to transport the biomass through the torrefaction device, so that hot torrefaction gases can pass through the strip and the liquid biomass. Apparatus according to claim 1, characterized in that the biomass transported on the upper conveyor belt during the process of torrefaction is ultimately pumped into the device for even distribution of biomass on the lower conveyor belt. Apparatus according to claim 11, characterized in that the heated hot torque gases are introduced into the interspace of the lower conveyor through the control flap (21) and the upper conveyor via the control flap (7) in the transmission (16). Apparatus according to claim 1, characterized in that the product, that is, the torrefied biomass from the torrefying device, is discharged by a screw conveyor (24). Apparatus according to claim 1, characterized in that the dust present in the torrefaction gases is collected in the conical bottom (17) and, if necessary, discharged from the torrefaction device. Apparatus according to claim 1, characterized in that the biomass particles that fall through the perforated conveyor belt are collected in the conical bottom (18) and, if necessary, discharged from the torrefaction device. 17. A biomass torrefying device comprising a thermally insulated gas-tight chamber (10), one perforated conveyor belt (9), a conical container for biomass filling (1), a screw conveyor (2), a device for evenly distributing biomass to the conveyor (3) ), control flaps or grilles (5), collecting duct (6), bulkheads (8), electromotor drive (EM) of fan or blower, heat exchanger (16), inlet (20) of hot torque gases into the space of the conveyor, gas burner (15), a heat exchanger (12) for preheating the air (A) supplied to the gas burner (15), a conveyor belt perforation cleaning system, and a screw conveyor (24) for extracting the biorefined biomass from the torrefaction device ( 25) characterized by the fact that the torrefaction process of the biomass is carried out by forced convection of the hot torrefaction gases through the perforated conveyor belt and biomass, the forced stream of the torrefaction gases being carried out by a valve or the blower, and the torrefaction gases are heated in a heat exchanger (16) by a gas burner (15) which uses torrefaction gases as energy, and the waste heat is used to preheat the air used to burn the torrefaction gases in the gas burner. 18. The device according to claim 1, characterized in that the biomass transported through the conveyor belt during the torrefaction process is pumped into the conical tank at the end of the strip. Apparatus according to claim 18, characterized in that the product, that is torrefied biomass, is discharged from the conical sump of the torrefying device by a screw conveyor (24).