An apparatus for drying bulk goods and a method are provided for continuously drying bulk goods. In particular, an apparatus and a method is provided for drying wood fibers.

A heat pump dryer includes a main casing, a compressor, a first heat exchanger having a first portion and a second portion, and a second heat exchanger. The main casing has an air inlet, a first outlet conduit, a second outlet conduit, a first air outlet, and a second air outlet. Air is arranged to enter the main casing through the air inlet, and is arranged to be bifurcated to pass through the first outlet conduit and the second outlet conduit. The air in the first outlet conduit is arranged to sequentially flow through the second heat exchanger and the first portion of the first heat exchanger, whereas the air in the second outlet conduit is arranged to flow through the second portion of the second heat exchanger.

The invention relates to a drying system (T) according to FIG. 1 for drying goods to be dried (LTG), comprising—a drying tunnel (TT), —a line (LAG) for exhaust gas (AG) containing (VOC) out of the drying tunnel (TT), —a controlled fan (GBL) for further transporting the exhaust gas (AG) to a heat exchanger (WT), —a heat exchanger (WT) for heating the exhaust gas (AG) using the clean gas (RG), —an exhaust gas line (LAG) downstream of the heat exchanger (WT) for further transporting the exhaust gas (AGWT) to a burner (BR) in a combustion chamber (BK) of a thermal post-combustion system (TNV), —a cold bypass (BP) which bypasses the heat exchanger (WT) and which can be regulated using an electronically controlled controller (R), —a fuel line (LEG) for a fuel (EG) to the burner (BER), —a clean gas line (LRG) for transporting the clean gas (RG) out of the combustion chamber (BK) to the heat exchanger (WT) in order to cool the exhaust gas (AG), —a clean gas line (LRG) for conducting the clean gas (RG) from the heat exchanger (WT) to the heat consumers (WA), —a heater (HZTT) for heating the drying zone (TT) by means of the heat consumers (WA), and—a clean gas line (LRG) for conducting the clean gas (RGD) to a stack (K). The invention also relates to a drying method and a method for a thermodynamic regulation (TDR).

Described is a method and apparatus for drying organic material using the energy contained in the organic material to be dried to drive the drying process. The organic material could be sewage sludge, food scraps, manure, wood, bagasse etc. The latent heat of evaporation is recovered through the use of a heat pump mechanism. This allows for the retention of a majority of the heat within the system, allowing optimal drying conditions to be maintained throughout the drying process.

An apparatus and method for the temperature control of objects, in particular for drying coated vehicle bodies, with a temperature control chamber with at least one lock region, a fresh air device for producing fresh air which can be supplied to the temperature control chamber, a circulating air device which extracts exhaust air from the temperature control chamber and produces circulating air which can be supplied to the temperature control chamber, an air intake device for supplying air to the temperature control chamber, and a control device. A fresh air volume flow and a circulating air volume flow can be supplied to the air intake device, and the control device is configured to control the fresh air volume flow and the circulating air volume flow in such a manner that the overall volume flow which is supplied to the temperature control chamber does not fall below a lower limit.

The present invention relates to combined cooker and dryer apparatus to use for drying material, such as raw material for producing fish or meat meal. The device of the present invention provides a cooker and a dryer apparatus with disks and scrapers for heat exchange and evaporation of the water phase from any material.

The heat recovery system includes an oven having a treatment air with a treatment air temperature and a treatment air dew point temperature to treat a product or product in process. A zone outlet exhaust waste treatment air following the treatment of the product. A preheating zone includes a preheating inlet for the introduction of preheating air having a preheating air temperature and a preheating air dew point temperature to preheat the product. A transfer duct extends between the zone outlet of the oven and the preheating zone to transfer a portion of waste treatment air from the oven to the preheating zone to create the preheating air to preheat additional product. The preheating air preheats the product in the preheating zone to a product temperature that is at least equal to the treatment air dew point temperature to eliminate surface condensation on the product during treatment in the oven.

A dryer (100), comprising a dryer chamber (101) coupled to a closed loop gas-circulating system for circulating gas through the dryer chamber (101); wherein the closed loop gas-circulating system recirculates the gas and comprises: a compressor (113) coupled to receive return gas from the dryer chamber (101) and to compress the return gas to provide compressed gas; a separator (109) sitting in the gas-circulating system for draining condensate from the gas; and a gas discharger (103; 104) coupled to receive compressed gas from the compressor (113) and to discharge the compressed gas through a discharger exit (118). The separator sits in the closed loop gas-circulating system downstream of the compressor to receive compressed gas and upstream of the gas discharger (103;104). Thereby drying efficacy is improved and is advantageous at relatively low drying temperatures such as below 40 degrees Celsius. There is also provided a door for a dryer, a method of operating a dryer and a method of drying, such as a method of drying pharmaceutical substances, compounds, ingredients or products.

A device for drying sheets includes: a conveying device for conveying sheets through the device for drying sheets, a first drying stage arranged towards an upstream end of the device for drying sheets and comprising at least one drying chamber, first stage drying air supply means for introducing hot air into said at least one drying chamber of said first drying stage at a drying air inlet; air discharge means for discharging exhaust air from said at least one drying chamber of said first drying stage, a second drying stage arranged downstream of the first drying stage and comprising at least one drying chamber; transfer means for transferring exhaust air discharged from said at least one drying chamber of the first drying stage into said at least one drying chamber of the second drying stage; humid drying air supply means for introducing said exhaust air into said at least one drying chamber of said second drying stage, said humid drying air supply means comprising at an humid drying air inlet for introducing humid drying air arranged at an upstream position of the second drying stage; supplemental air supply means for introducing supplemental air into said second drying stage at an supplemental air inlet arranged downstream of said humid drying air inlet.

A method for drying sheets is also disclosed.

The invention relates to a process for processing an adhesive, wherein the process comprises applying an adhesive precursor product onto an adhesive carrier and activating and crosslinking the adhesive precursor product by treating the adhesive precursor product with water vapor and heat in a reaction chamber, and wherein the process is characterized in that air mixed with reaction gases forming during the activation and crosslinking in the reaction chamber is conducted away from the reaction chamber and recirculated as circulating air into the reaction chamber, wherein a portion of used air of the air recirculated as circulating air is replaced by fresh air. The invention further relates to a corresponding device for processing a pressure sensitive hot-melt adhesive.