A method of and a system for drying a material in a drying chamber (100), the method comprising the steps of; supplying air to an air-drying system (114, 214, 314) which air-drying system comprises; an air inlet (116), a first heat exchanger (204) having a first warm side (204a) and a first cold side (204b); a heat pump (318) comprising an evaporator (206), a condenser (208) and a compressor (316) arranged to provide a first heat transfer from the evaporator (206) to the condenser (208); an air outlet (118) arranged to supply the air to the drying chamber (100); a second heat exchanger (210) having a second warm side (210a) and a second cold side (210b), the second cold side (210b) being connected a heat transfer medium capable of absorbing heat from the second warm side (210a) through a second heat transfer, the second heat exchanger (210) being arranged downstream of the first cold (204b) side and upstream of the air outlet (118); and an air flow device (202) arranged to control the air flow rate from the air inlet (116) to the air outlet (118) for supplying air into a drying chamber (100); passing the air, by means of the air flow device (202), from the air inlet (116), sequentially through the first warm side (204a) of the first heat exchanger (204), the evaporator (206), the first cold side (204b) of the first heat exchanger (204), the condenser (208) and the air outlet (118) and further passing the air through the second warm side (210a) of the second heat exchanger (210); and alternately heating and cooling the air passing the air-drying system (114, 214, 314), wherein heating the air comprises promoting the first heat transfer while suppressing the second heat transfer, and cooling the air comprises suppressing the first heat transfer while promoting the second air transfer.

(FIG. 2)

A method of and a system for drying a material in a drying chamber (100), the method comprising the steps of; supplying air to an air-drying system (114, 214, 314) which air-drying system comprises; an air inlet (116), a first heat exchanger (204) having a first warm side (204a) and a first cold side (204b); a heat pump (318) comprising an evaporator (206), a condenser (208) and a compressor (316) arranged to provide a first heat transfer from the evaporator (206) to the condenser (208); an air outlet (118) arranged to supply the air to the drying chamber (100); a second heat exchanger (210) having a second warm side (210a) and a second cold side (210b), the second cold side (210b) being connected a heat transfer medium capable of absorbing heat from the second warm side (210a) through a second heat transfer, the second heat exchanger (210) being arranged downstream of the first cold (204b) side and upstream of the air outlet (118); and an air flow device (202) arranged to control the air flow rate from the air inlet (116) to the air outlet (118) for supplying air into a drying chamber (100); passing the air, by means of the air flow device (202), from the air inlet (116), sequentially through the first warm side (204a) of the first heat exchanger (204), the evaporator (206), the first cold side (204b) of the first heat exchanger (204), the condenser (208) and the air outlet (118) and further passing the air through the second warm side (210a) of the second heat exchanger (210); and alternately heating and cooling the air passing the air-drying system (114, 214, 314), wherein heating the air comprises promoting the first heat transfer while suppressing the second heat transfer, and cooling the air comprises suppressing the first heat transfer while promoting the second air transfer.

(FIG. 2)

The present invention provides improved apparatus and methods for the monitoring and control of apparatus designed to remove moisture from an initially wet product, such as a continuous dryer (14). The net rate of water removal from the wet product (16) is determined during drying thereof, preferably on a real-time basis. A control assembly (20) is operatively coupled with the dryer (14) and includes sensors (24, 26, 28, 34), which are operatively coupled with a digital controller (38). The controller (38) has a PID controller operable to continuously determine the average net rate of water removal from the product (16).

An oven may facilitate heating, curing, and/or drying processes for manufactured items, such as shoe parts, using multiple groups of infrared sources. Efficiencies of the oven are achieved through a deliberate airflow characteristic, which is accomplished with a configuration of apertures extending through a circulation plate. A higher concentration of apertures is formed in the circulation plate near a center zone relative to zones near an entrance and exit to the oven. Further, the shape of the apertures in the circulation plate aid in improved airflow within the oven.

A method and an apparatus are disclosed for analyzing an absorption filtering medium that filters volatile organic substances in a process gas in a dehumidification plant for dehumidifying polymer granules, with a fan that generates a flow of gas through the filtering medium, an analyzer for analyzing the concentration of total organic carbon, a sensor for detecting pressure downstream of the filtering medium, in which the state of saturation and/or the absorbent capacity and/or the deterioration over time of the filtering medium is determined by a comparison of the measured concentrations of the total organic carbon in the flow of gas upstream and downstream of the filtering medium.

A method and an apparatus are disclosed for analyzing an absorption filtering medium that filters volatile organic substances in a process gas in a dehumidification plant for dehumidifying polymer granules, with a fan that generates a flow of gas through the filtering medium, an analyzer for analyzing the concentration of total organic carbon, a sensor for detecting pressure downstream of the filtering medium, in which the state of saturation and/or the absorbent capacity and/or the deterioration over time of the filtering medium is determined by a comparison of the measured concentrations of the total organic carbon in the flow of gas upstream and downstream of the filtering medium.

A continuous wood modification by heat process, that comprises: stacking wooden boards on a trolley at intervals; exerting pressure on said wooden boards; transferring said wooden boards to a heating kiln, pre-heated by microwave and hot air circulation, that has a water vapor flow of 2-5 meter3/hour, a temperature range of 60-100° C., and a humidity range of 50%-100%; transferring said wooden boards to a shallow drying kiln, pre-heated by microwave and hot air circulation, that has a drying temperature of 100-120° C.; transferring said wooden boards to a deep drying kiln, pre-heated by microwave and hot air circulation, that has a drying temperature of 120-120° C., an oxygen content range of 1-10%, and a water vapor flow rate of 1-10 m3/hour; transferring said wooden boards to a carbonization kiln, pre-heated by microwave and hot air circulation, that has a temperature range of 120-180° C., an oxygen content range of 1%-5%; transferring said wooden boards to a slow cooling kiln, that has a temperature range of 120-130° C., and an oxygen content range of 1%-10%; transferring said wooden boards to a fast cooling kiln, that has a temperature range of 90-100° C.; transferring said wooden boards to a rewetting kiln, that has a humidity range of 50%-100%; providing water vapor to said rewetting kiln; while being in said rewetting kiln, and when a temperature range of said wooden boards is 40-60° C., and a moisture content of said wooden boards is 6%-10%, transferring said wooden boards out of said rewetting kiln; wherein each of said heating kiln, said shallow drying kiln, said deep drying kiln, said carbonization kiln, said slow cooling kiln, said fast cooling kiln, and said rewetting kiln comprises a fan, a partition board, a shunt hood, and an exhaust port; wherein said partition board divides an interior of each of said heating kiln, said shallow drying kiln, said deep drying kiln, said carbonization kiln, said slow cooling kiln, said fast cooling kiln, and said rewetting kiln into an upper chamber and a lower chamber; wherein said shunt hood is disposed in said upper chamber; wherein said fan, said shunt hood, and said lower chamber are connected and form a air channel; wherein said lower chamber comprises a shunt plate, disposed along left and right walls of a kiln; wherein said shunting plate comprises a plurality of sieve holes that are disposed gradually dense from top to bottom; wherein one end of said shunt plate is connected with said partition board and the other end is connected with the bottom of a kiln.

A continuous wood modification by heat process, that comprises: stacking wooden boards on a trolley at intervals; exerting pressure on said wooden boards; transferring said wooden boards to a heating kiln, pre-heated by microwave and hot air circulation, that has a water vapor flow of 2-5 meter3/hour, a temperature range of 60-100° C., and a humidity range of 50%-100%; transferring said wooden boards to a shallow drying kiln, pre-heated by microwave and hot air circulation, that has a drying temperature of 100-120° C.; transferring said wooden boards to a deep drying kiln, pre-heated by microwave and hot air circulation, that has a drying temperature of 120-120° C., an oxygen content range of 1-10%, and a water vapor flow rate of 1-10 m3/hour; transferring said wooden boards to a carbonization kiln, pre-heated by microwave and hot air circulation, that has a temperature range of 120-180° C., an oxygen content range of 1%-5%; transferring said wooden boards to a slow cooling kiln, that has a temperature range of 120-130° C., and an oxygen content range of 1%-10%; transferring said wooden boards to a fast cooling kiln, that has a temperature range of 90-100° C.; transferring said wooden boards to a rewetting kiln, that has a humidity range of 50%-100%; providing water vapor to said rewetting kiln; while being in said rewetting kiln, and when a temperature range of said wooden boards is 40-60° C., and a moisture content of said wooden boards is 6%-10%, transferring said wooden boards out of said rewetting kiln; wherein each of said heating kiln, said shallow drying kiln, said deep drying kiln, said carbonization kiln, said slow cooling kiln, said fast cooling kiln, and said rewetting kiln comprises a fan, a partition board, a shunt hood, and an exhaust port; wherein said partition board divides an interior of each of said heating kiln, said shallow drying kiln, said deep drying kiln, said carbonization kiln, said slow cooling kiln, said fast cooling kiln, and said rewetting kiln into an upper chamber and a lower chamber; wherein said shunt hood is disposed in said upper chamber; wherein said fan, said shunt hood, and said lower chamber are connected and form a air channel; wherein said lower chamber comprises a shunt plate, disposed along left and right walls of a kiln; wherein said shunting plate comprises a plurality of sieve holes that are disposed gradually dense from top to bottom; wherein one end of said shunt plate is connected with said partition board and the other end is connected with the bottom of a kiln.

The present disclosure relates to a heat pump based dryer or a combination washer and dryer device comprising a housing receiving a drum for containing associated articles to be dried by air that flows along a pathway between an outlet and an inlet of the housing. A fluid is provided in the pathway to at least partially remove moisture from the air. A heat pump includes a heat source located at least partially within the pathway and a heat sink being operatively adapted to the heat source to circulate a refrigerant therein. An enclosure at least partially containing the heat sink is arranged to accept the fluid from the pathway to exchange heat with the heat sink and return the fluid to the pathway. Fluid may be provided to the pathway by a spray nozzle adjacent the outlet or by an evaporative media downstream of a lint separator.

A dryer adapted for use in an asphalt plant. The dryer comprises a drum having an inner wall and a plurality of flights, each of which is disposed on the inner wall of the drum and each of which has a proximal end and a distal end spaced apart from the proximal end. At least one of the plurality of flights comprises a V-shaped notch. A method for drying components of asphalt comprising drying the components of asphalt in the drum of such a dryer.