123results about "Tobacco drying" patented technology

Systems and methods for freeze drying botanical or herb items or products using a modular vacuum chamber configuration are provided. Such configurations can reduce or prevent the evaporative loss of volatile compounds while reducing the temperature and removing air to prevent oxidation of the product. The freeze drying systems and methods of the present invention can improve organoleptic characteristics, shelf life, and extractions.

The invention discloses a closed inner circulation type tobacco drying device. The closed inner circulation type tobacco drying device comprises a drying chamber and a drying machine body. A closed cavity is formed in the drying machine body and divided by a sensible heat exchanger into a first cavity and a second cavity which communicate with each other. The drying machine body is further provided with a containing cavity communicating with the outside. A first heat exchanger is arranged in the containing cavity. A second heat exchanger is arranged in the middle portion of the first cavity. A third heat exchanger is arranged in the second cavity. The drying machine body is internally provided with a heat pump system controlling the running state of the first heat exchanger, the second heat exchanger and the third heat exchanger. The heat pump system is adopted as a heat source for the drying machine body, closed convection circulation is conducted between the drying chamber and the drying machine body, air exchange with the outside does not exist in the whole convection circulation drying process, and complete closed drying is achieved. The situation that tobacco fragrance leaks in the drying process, and the tobacco drying quality is affected is avoided.

The invention discloses a tobacco drying device. The tobacco drying device comprises a tobacco drying chamber, a humidity control module, a temperature control module, a cooling capacity storage water tank, a heat storage water tank and a water source hot water heat pump. The humidity control module is used for independently controlling the air humidity of the tobacco drying chamber. The temperature control module is used for independently controlling the air temperature of the tobacco drying chamber. The cooling capacity storage water tank is used for supplying a refrigerant for cooling air to the humidity control module. The heat storage water tank is used for recycling heat in the tobacco drying chamber after tobacco is dried. The water source hot water heat pump achieves heat transmission of water in the cooling capacity storage water tank and the heat storage water tank in a heat pump work manner. According to the tobacco drying device, the temperature and humidity in the drying process can be independently controlled, tobacco drying can be conducted completely according to a traditional temperature and humidity control curve, and the taste of tobacco is kept consistent with traditional taste. Meanwhile, the drying process is conducted under the closing condition, the smell of the tobacco is stored well, energy can be cyclically utilized in the drying process, energy saving and environment friendliness are achieved, and cost is low.

The invention discloses a dehumidification drying unit adopting an air inlet precooling and efficient dehumidification combined module and a drying device. At least two sets of heat pump units are included, each heat pump unit includes a compressor, a condenser, a throttling device and an internal dehumidification evaporator which are sequentially connected to form a closed system for refrigerantcirculation, and further includes a cross-flow heat exchanger, each cross-flow heat exchanger is provided with a first heat exchange channel and a second heat exchange channel which are arranged alternately, and air outlets of the first heat exchange channels and air inlets of the second heat exchange channels communicate through circulation channels; the internal dehumidification evaporators of the sets of the heat pump units are sequentially arranged in the circulation channels and located at the air outlets of the first heat exchange channels, and air outlets of the second heat exchange channels are provided with first fans; the condensers of the sets of the heat pump units are sequentially arranged at air outlets of the first fans; and drying airflow is cycled in a closed mode, and part of wet air from the drying device flows through the first heat exchange channels, the multiple internal dehumidification evaporators, the circulation channels, the second heat exchange channels, andthe first fans sequentially, is then mixed with the other part of wet air of the drying device, and passes through the multiple condensers to obtain dry air.

The invention provides a biomass pellet fuel heating appliance, comprising a combustion furnace, a heat exchanger, a central supply system for supplying biomass pellet fuel to the combustion furnace, and a barn; the heat exchanger is used for being connected to one end of a horizontal nozzle of the combustion furnace, the barn includes a heating chamber, the heat exchanger is disposed in the heating chamber, and the combustion furnace and the central supply system are disposed outside the barn; the central supply system is used for providing biomass pellet fuel centrally for more than two combustion furnaces and comprises a suction unit with a vacuum pump, a storage barrel, more than two suction pipes, more than two feed pipes, a screw feeding mechanism, a feeding distribution connector, more than two electromagnetic valves, more than two vacuum buckets and more than two gravity valves. The heating appliance provided herein is reasonable and practical in design, safe and green, and efficient and labor-saving, reduces cost, saves resources, improves work efficiency and enterprise economic benefit, and is suitable for popularization and use.

A system and method for curing or drying tobacco leaves are described herein. The method includes flowing a first combustion gas generated by a first heat source through a first flue pipe provided inside a first barn to heat air inside the first barn to cure a first batch of tobacco leaves disposed inside the first barn; transferring at least a portion of the first combustion gas generated by the first heat source to a second flue pipe provided inside a second barn adjacent the first barn to heat the second barn and start curing a second batch of tobacco leaves disposed inside the second barn; and flowing second combustion gas generated by a second heat source through the second flue pipe to continue curing the second batch of tobacco leaves after the second barn is heated.

The invention discloses a heat pump type tobacco dryer and a control method thereof, which are used for solving the problems that tobacco leaves crack and the baking effect is not ideal due to the fact that the temperature rise of the dryer is too fast. The control method of the heat pump type tobacco dryer comprises the steps that the actual temperature of a curing barn is obtained, the operation frequency of a compressor is controlled according to the difference value of the set temperature and the actual temperature of the curing barn, the temperature rise rate of the curing barn is increased in a staged mode by controlling the operation frequency of the compressor, and the temperature of the curing barn reaches a target temperature interval. The temperature rise rate of the curing barn is increased in stages, operation of the compressor is controlled through different strategies according to the current curing barn dry-bulb temperature average value and the preset curing barn temperature critical value, the temperature rise speed of the curing barn can be prevented from being too high, and the curing barn is prevented from being too hot in the temperature drying stage.

The invention discloses a drying machine for industrial tobacco production, and relates to the technical field of industrial tobacco production. The drying machine for industrial tobacco production comprises a drying barrel, a circulating device is arranged on the outer side of the drying barrel, and a motor is arranged at the top of the drying barrel. An output shaft of the motor penetrates through the drying barrel and extends into an inner cavity of the drying barrel, and the output shaft of the motor is fixedly connected with a rotary shaft. Stirring blades are arranged on the outer side of the rotary shaft at equal intervals, and a discharging pipe is formed in the bottom of the drying barrel. The bottom of the discharging pipe is connected with a collecting box in a penetrating manner, and the front face of the collecting box is fixedly connected with an air pump. A suction pipe of the air pump penetrates through the collecting box and extends into an inner cavity of the collecting box. According to the drying machine for industrial tobacco production, by means of the structural design of the discharging pipe, the collecting box, a box body, a box cover, a connector, movablerods, a bottom plate, cross rods, a hydraulic rod, sliding wheels, a braking device, the air pump and a first dust removal box, the problem that a drying machine for industrial tobacco production is not environment-friendly.

The method involves leading the product mass flow by a dryer and controlling the drying temperature in the dryer. The product mass flow led by the dryer (13) is controlled (20) as a function of the measured drying temperature. During moving the drying temperature, the product mass flow is reduced. That during rising the drying temperature of the product mass flow is increased. An independent claim is included for a drying device for a fibrous product mass flow

The invention relates to the technical field of drying control, and discloses a method for adjusting the tobacco leaf drying temperature. The method is applied to a heat pump dryer. The heat pump dryer comprises a first drying system and a second drying system, and the first drying system and the second drying system are both used for being controlled to heat a drying room. The method for adjusting the tobacco leaf drying temperature comprises the steps that the drying stage of tobacco leaves in the drying room is determined; and controlling the first drying system and the second drying system to heat the drying room according to the drying stage. Thus, the drying room is heated by controlling the first drying system and the second drying system, the drying temperature of the tobacco leaves in different drying stages can be adjusted, accurate control over the drying systems in the different drying stages is implemented, and the drying effect on the tobacco leaves is improved. The invention further discloses a device for adjusting the tobacco leaf drying temperature, electronic equipment and a storage medium.

The invention relates to an air path opening and closing combined drying device, and the device comprises a heating and dehumidifying room, wherein the interior of the heating and dehumidifying room is divided into at least one inner cavity and at least one outer cavity through a partition plate; the outer cavity is communicated with ambient air, and the inner cavity is communicated with a curingbarn to form a circulating channel of drying airflow; the side wall of the inner cavity or the partition plate is further provided with a fresh air opening and a moisture discharging opening. When thedrying airflow is in closed circulation, the fresh air opening and the moisture discharging opening are closed at the same time, and the drying airflow circularly moves in a closed circulation channel formed by the inner cavity and the curing barn; when the drying airflow is partially circulated in an open circuit mode, the fresh air opening and the moisture discharging opening are opened at thesame time, warm and wet return air in the curing barn enters the inner cavity, part of the warm and wet return air entering the inner cavity is discharged out of the inner cavity through the moisturedischarging opening, and meanwhile environment fresh air is supplemented into the inner cavity through the fresh air opening. The method solves the problems that in the yellowing period, cells such asfresh tobacco leaves are still in the aerobic respiration and living body metabolism stages, and the autologous heat productivity of the tobacco leaves is large, so that more heat is generated in thecuring barn, and the dry-bulb temperature exceeds the target value.

A drying apparatus for drying a fibrous material is described. The apparatus provides a drying apparatus for drying a fibrous or granular material comprising, a heater arranged to heat a first gas stream and a fibrous material, the first gas stream arranged to enter the drying apparatus at an inlet, the gas stream including steam. A separator is provided for separating a said fibrous material from the first gas stream to form a second gas stream, and a fan and a duct are arranged to recirculate the second gas stream to the process heater steam injection apparatus. A flow variation apparatus is arranged to vary the flow of gas in a first gas stream and improve the drying function due to increased heat and mass transfer between the gas stream and the tobacco product.

The invention relates to a multipurpose heat pump curing barn. The curing barn comprises an air energy heat pump and a barn body, wherein the interior of the barn body is separated into a unit chamberand a hot air chamber; an evaporator case of the air energy heat pump is located outdoors, a condenser is located in the unit chamber, a circulating fan is arranged below the condenser, an air guidefan and a residual hot air box are arranged on the two sides of an evaporator in the evaporator case correspondingly, and a movable heat insulation plate is arranged between the air guide fan and theevaporator; and an air supply cavity and a moisture discharge cavity are formed in the top and the bottom of the hot air chamber respectively, the air inlet of the air supply cavity is located in theunit chamber, a circulating air port is formed in the bottom of the side wall, close to the unit chamber, of the hot air chamber, and an air outlet of the moisture discharge cavity is connected with the residual hot air box through a moisture discharge fan. The curing barn is suitable for drying various crops, and can effectively protect moisture removal gas against invalid heat dissipation in thedischarge process at the same time, so that the heat of the moisture removal gas can be sufficiently absorbed by the evaporator of the air energy heat pump to a maximum extent, and the heat energy utilization rate is improved.

The invention discloses a drying device used in tobacco industry. The drying device comprises a working box body, a movable door, a heating device and a drying frame, wherein the movable door is arranged on the working box body, a handle is arranged on the movable door, the movable door is hinged to the working box body through a hinge, the heating device is arranged at the upper part inside the working box body, and the drying frame is arranged below the heating device. The drying device provided by the invention can be used for full drying to cigarettes and tobacco, so that cigarettes and tobacco is heated uniformly, the quality of the finished cigarettes and tobacco is ensured, gas produced after tobacco drying can be recycled, energy waste is reduced, and environment protection is facilitated.

The invention relates to a direct-heat and constant-temperature circulating heat pump drying machine. The direct-heat and constant-temperature circulating heat pump drying machine comprises a machine case, a draught fan arranged in the machine case, an evaporator arranged on the right side of the draught fan, a condenser arranged on the right side of the evaporator, a circulating loop connected with the evaporator and the condenser, a throttling device, a liquid storage tank, a compressor, an air inlet pipe arranged on the throttling device, an electric adjusting valve arranged at the tail end of the air inlet pipe, an air supply pipe arranged on the left side of the condenser, an air returning port formed in the tail end of the air supply pipe, an air outlet formed in the right side of the condenser, and a centrifugal fan arranged in the air outlet, wherein the throttling device, the liquid storage tank and the compressor are arranged on the circulating loop. According to the direct-heat and constant-temperature circulating heat pump drying machine, the air volume can be adjusted through the electric adjusting valve and the centrifugal fan, and the constant-temperature air discharging is achieved; a circulating air flue is formed through the air outlet and the air returning port, exhausted waste heat can be recycled, and the drying efficiency is high. Heat is absorbed through the evaporator, heating of the evaporator is improved, the effect of energy saving is achieved, the work efficiency ratio of a main machine is increased, meanwhile, the structure is simple, and using is convenient.

Drying plant for particulate materials comprising: a drying duct which is provided with a substantially horizontal rectilinear starting section, a rectilinear ascending final section which extends upwards with a predetermined angle of inclination with respect to the vertical, and a curved intermediate section which connects the rectilinear starting section to the rectilinear final section; a hot gas generator designed for supplying to the inlet of the rectilinear starting section of the drying duct a flow of process gas at high temperature; a particulate feeding device which is structured so as to be able to feed/introduce into the rectilinear starting section of the drying duct a flow of particulate material to be dried substantially without relevant leaks of process gas from the drying duct; and a bypass duct which branches from the rectilinear starting section of the drying duct upstream of the particulate feeding device, and then re-joins the drying duct at the curved intermediate section, so as to feed back into the drying duct the process gas diverted inside it.

A method of increasing the efficiency of a drier, particularly a stream drier for loose and flammable materials, particularly cut tobacco, working with a gaseous drying agent under a working pressure from 5 kpa to 10 MPa, measured as an absolute pressure, preferably the drying agent being superheated steam. A pressurized process gas, preferably waste steam, particularly coming from the interior of the drier, is passed through a dosing-separating valve, preferably a rotary vane feeder (1′) mounted behind the stream drier (2), particularly through its movable section with the dried material being emptied therefrom, the steam being returned from a release valve (10) for reusing it in the process of diluting the air, the steam being regarded as a technology waste product.

The present invention provides a device and a method, wherein the process conditions can be kept constant in a device for processing tobacco. The device comprises a combining device for combining the tobacco to be processed and a process gas and which is connected to a discharge device for discharging a first quantity of the process gas and a supply device for supplying a second quantity of the process gas; the device having at least one control device for controlling the first quantity of the discharged process gas and/or the second quantity of the supplied process gas.