A process for treating gaseous effluents developed in a coffee roasting installation making it possible to treat gaseous effluents developed in a coffee roasting installation, in which the effluents are passed through an oxidative catalytic converter. Within the catalytic converter use is made of a catalyst selected from the group including: a) a catalyst including a porous faujasite support containing copper oxide nanoparticles in a quantity of between 2% and 7% of the total weight of the catalyst; b) a catalyst including a porous -alumina support containing copper oxide nanoparticles in a quantity of between 2% and 7% of the total weight of the catalyst; and c) a catalyst including a mesoporous zeolite or silica support containing iron nanoparticles in a quantity of between 2% and 7% of the total weight of the catalyst.

A bean roasting system includes a roasting chamber, a blower, a variable diverter and a controller. The roasting chamber, the blower and the variable diverter each is disposed at least partially within a recirculating gas flow path. The blower is configured to provide a flow stream of gas through the recirculating gas flow path. The variable diverter is configured to split the gas flow path into at least two flow paths including a treated flow path and a bypass flow path. The treated flow path includes a series arrangement of a gas heater and a catalytic converter. The variable diverter is configured to control a percentage of a flow stream of gas that is diverted into the bypass flow path. The controller is configured to activate different predetermined operating modes for the bean roasting system by controlling a state of the variable diverter and a state of the heater.

A method and an apparatus for roasting a food product including: loading a batch of a predetermined food product type in a roasting device; setting operating parameters of the roasting device according to initial reference values for the predetermined food product type; performing feedback control during the heating of the product by obtaining, instant by instant, a value for a sound quantity which is relative to a sound emitted by the product, the sound being detected in a frequency range including both human ear audible and ultrasound frequencies; comparing the sound quantity's value obtained at each instant to a value taken by the sound quantity at such instant in a roasting curve of sound quantity versus time associated with the predetermined food product type; and adjusting, instant by instant, the operating parameters of the roasting device depending on the result of the comparison.

A substance processing system includes a pressurizer configured to pressurize air and a processing chamber configured to process a substance. The system also includes a heat exchanger coupled between the pressurizer and the processing chamber. A nozzle is coupled to the processing chamber such that output from the nozzle comprises a substantially even pressure distribution.

A system and method for roasting coffee beans, or similar products, is disclosed. In an aspect the invention includes an acoustic sensor, such as a microphone, which senses the acoustic emissions or cracks made by the coffee beans during the roasting process. The acoustic emissions are translated in the system and method to signals that are processed, including in some aspects using frequency domain processing, so as to control the roasting process and achieve a desired final product. The acoustic emissions can also be used to determine if the coffee beans are caffeinated or decaffeinated.

An apparatus for roasting and cooling loose products includes an oven with a housing including an upper and a lower section with glass doors. The apparatus has an air and a gas distribution grid connected to the upper and lower sections. In addition, the apparatus includes a high-pressure ventilator in the upper section having an outlet connected to the air duct, a rotor drum installed over the gas distribution grid, a feeding tray located in the upper section, a heater located in the lower section and configured to heat air and a hopper located on top of the housing above the rotor drum and configured to feed the loose products into the oven. The hopper includes one or more strain gauges configured to weigh the loose products. An opening located adjacent the hopper intakes fresh air intake and outtakes humidified air and a horizontal cooler chills the loose products.

The invention concerns an apparatus for roasting coffee beans comprising:a vessel (1) to contain coffee beans,an electrical heating device (13) to heat coffee beans contained in the vessel,at least one temperature sensor (23) to measure temperature in the vessel, a control system (180) operable to control the heating device, wherein the control system is configured to:apply a roasting recipe dedicated to the roasting of partially pre-roasted beans comprising at least a temperature versus time profile by controlling the electrical heating device based on the measure of the temperature sensor,detect a decrease of the consumption of electrical power of the heating device in function of time,stop heating if no decrease of the consumption of electrical power happens after a set reference time ti.continue or stop the electrical heating device depending on the type of identified beans.

The present disclosure relates to a roasting apparatus and a method of controlling the roasting apparatus, and more particularly, to a roasting apparatus for roasting objects while stirring the objects in a roasting chamber, and a method of controlling the roasting apparatus. An roasting apparatus for heating objects according to the present disclosure includes a roasting chamber part which includes: a cylindrical roasting chamber that extends in a vertical direction and has an internal space in which the objects are stirred; and a rotary stirring part that rotates to stir the objects received in the roasting chamber and rotates about a stirring axis defined in the vertical direction. The roasting apparatus further includes heat source parts which supply heat to the roasting chamber part.

The present disclosure relates to a roasting apparatus and a method of controlling the roasting apparatus, and more particularly, to a roasting apparatus for roasting objects while stirring the objects in a roasting chamber, and a method of controlling the roasting apparatus. An roasting apparatus for heating objects according to the present disclosure includes a roasting chamber part which includes: a cylindrical roasting chamber that extends in a vertical direction and has an internal space in which the objects are stirred; and a rotary stirring part that rotates to stir the objects received in the roasting chamber and rotates about a stirring axis defined in the vertical direction. The roasting apparatus further includes heat source parts which supply heat to the roasting chamber part.

A baking device with uniform heating application comprises a frame, a roller assembly, and a heater. The roller assembly is supported by the frame. The roller assembly comprises a rotatable inner cylinder and a rotatable outer cylinder. The inner cylinder defines a plurality of first through holes that connect inner and outer surfaces of the inner cylinder. The inner cylinder encloses a hollow space that forms a heating zone. The outer cylinder has a plurality of second through holes that connect inner and the outer surfaces of the outer cylinder. The outer cylinder is arranged circumferentially outside and surrounds the inner cylinder. A baking zone of the baking device is formed between the inner and outer cylinders. The heater connected to the frame and arranged in the heating zone.