Solar dryer

The present invention relates to a solar dryer, which belongs to the field of new energy utilization. At least one material drawer is arranged in a drying box, a preheating air channel baffle is arranged between the rear wall of the drying box and the material drawer, the preheating air channel baffle and the drying box form a preheating air channel, a waste heat recovery heat exchanger is arranged under the material drawer, and the part of the drying box opposite to the waste heat recovery heat exchanger is provided with a fresh air inlet channel; and the lower end of a two-section finned heat tube is provided with a heat collection glass tube, the upper end of the two-section finned heat tube is arranged in the drying box, and the part of the two-section heat tube in the drying box is provided with fins. The solar dryer has a high drying speed and can save time; the solar dryer can also be prevented from being contaminated by insects and is clean and sanitary; and food can be dried at ...

Method for preheating alumina by using smoke afterheat from aluminium electrolysis production

The invention relates to a method for preheating alumina by using smoke afterheat from aluminium electrolysis production, relating to the technical field of afterheat utilization. The method comprises the steps: firstly, introducing hot smoke (9) exhausted from an electrolytic bath (13) into a heat exchanger hot end (15) in serial connection with the smoke exhaust pipe (7) of the electrolytic bath, through the smoke exhaust pipe; then, heating cold compressed air entering a heat exchanger cold end (14) into hot compressed air by the hot smoke; finally, introducing the hot compressed air into a chute power compressed air pipeline (1) from a heat exchanger cold end outlet (3) serially connected with the chute power compressed air pipeline (1), further preheating a chute and alumina powder (2), and meanwhile, discharging the hot smoke with substituted heat from the smoke outlet (6) of a heat exchanger. In the invention, by preheating the chute and the alumina powder to raise the temperature ...

Blast pressure forming disc type drier

Method and device for replacing anode during production of electrolytic aluminum

The invention discloses a method for replacing an anode during production of electrolytic aluminum, and relates to the technical field of electrolytic aluminum production. The method comprises the following steps of: taking a cold residual anode out of a heat exchange cabinet (1) and conveying the cold residual anode out of an electrolysis shop; pulling a hot residual anode (8) out of an electrolytic cell; placing the hot residual anode in a hot area (5) of the heat exchange cabinet to hermetically exchange heat with a cold new anode (9) in a cold area (6); taking the preheated cold new anode out of the cold area of the heat exchange cabinet and assembling in the electrolytic cell; and placing the cold new anode in the cold area of the heat exchange for preheating. The invention also discloses a heat exchange cabinet device for implementing the method. The heat exchange cabinet is provided with the cold area and the hot area of which the internal spaces are communicated with each other; ...

Thermoelectric refrigeration liquid cooling device

The invention relates to a thermoelectric refrigeration liquid cooling device, and belongs to a refrigeration plant. Thermoelectric refrigeration films and radiators are symmetrically arranged on two sides of a micro channel refrigeration exchanger; the micro channel refrigeration exchanger and a micro channel cooling plate are respectively arranged on the top and bottom of a hollow substrate; the micro channel refrigeration exchanger is provided with a liquid inlet and a liquid outlet which are connected by a hose; a water pump is arranged on the hose; two side walls of the micro channel refrigeration exchanger are symmetrically provided with micro channels; a plurality of micro channels are formed parallelly on the micro channel cooling plate; upper and lower runner division plates are arranged among the micro channels; and the micro channels on the micro channel refrigeration exchanger are communicated with those on the micro channel cooling plate. The thermoelectric refrigeration liquid ...

Method for producing carbon electrodes by floating carbon powder and coal tar pitch with spent potlining (SPL) of aluminium electrolysis

The invention discloses a method for producing carbon electrodes by floating carbon powder and coal tar pitch with spent potlining (SPL) of aluminium electrolysis, relating to reclamation of aluminium electrolysis waste and comprising the following steps: adding SPL carbon powder after flotation as a powdery material, wherein the addition amount of the SPL carbon powder accounts for 10-45% of the total weight; adding electrically calcined anthracite as aggregate, and the coal tar pitch as a binder, wherein the addition amount of the electrically calcined anthracite accounts for 30-60% of the total weight, and the addition amount of the coal tar pitch accounts for 15-30% of the total weight; evenly kneading the electrically calcined anthracite and the SPL carbon powder after flotation for 30-40 minutes under the temperature of 120-180 DEG C; adding the coal tar pitch, continuously kneading for 40-50 minutes, molding, cooling and baking the well-kneaded thickener, and cooling along with the ...

Gangue tamping mechanism used for hydraulic support

A gangue tamping mechanism used for a hydraulic support comprises a swing beam, a swing beam jack, a gangue tamping beam sheathed in the swing beam and a gangue tamping beam jack, and the swing beam jack is articulated between a gangue blocking base and the swing beam, wherein a lower swing beam is also arranged on the gangue blocking base and below the swing beam; one end of the lower swing beam is articulated on the gangue blocking base; a lower beam jack is articulated between the lower swing beam and the gangue tamping base; the lower swing beam is internally sheathed with a lower swing gangue tamping beam; a sliding pair is arranged between the lower swing gangue tamping beam and the lower swing beam along the length direction; and a lower swing gangue tamping beam jack is articulated between the lower swing gangue tamping beam and the lower swing beam. A swing beam mechanism is added below the swing beam of the gangue tamping mechanism used for the hydraulic support, and under the ...

Method for producing protein feed by using alcoholic grains liquor and equipment thereof

Blast pressure forming disc type drier

The present invention is an indirectly heating drier and its technoligical key point is that driving force is transfered via speed reducer to the hollow shaft in a casing and the hollow shaft has several blast pressure formed discs with condensed water guider inside it and scrapig boards at its dege. During operation, the discs along with the hollow shaft rotate, the hot pressure steam inside discs and the material outside discs perform heat exchange to make moisture in material evaporate and steam exhaust outside the casing with the condensed water formed inside discs being transfered to heating jacket on casing to realize secondary utilization fo heat source. Dried material is pushed by the scraping boards from inlet to outlet and discharged.

Thermoelectric refrigeration liquid cooling device

The invention relates to a thermoelectric refrigeration liquid cooling device, and belongs to a refrigeration plant. Thermoelectric refrigeration films and radiators are symmetrically arranged on two sides of a micro channel refrigeration exchanger; the micro channel refrigeration exchanger and a micro channel cooling plate are respectively arranged on the top and bottom of a hollow substrate; the micro channel refrigeration exchanger is provided with a liquid inlet and a liquid outlet which are connected by a hose; a water pump is arranged on the hose; two side walls of the micro channel refrigeration exchanger are symmetrically provided with micro channels; a plurality of micro channels are formed parallelly on the micro channel cooling plate; upper and lower runner division plates are arranged among the micro channels; and the micro channels on the micro channel refrigeration exchanger are communicated with those on the micro channel cooling plate. The thermoelectric refrigeration liquid ...

Method for producing protein feed by using alcoholic grains liquor and equipment thereof

A method for producing protein feed with waste trough liquid generated during alcohol production includes such technological steps as separation of solid from liquid and evaporation of liquid, and features high circulation capacity, low evaporation temp, full recovery of soluble protein, high protein content in feed and not scaling in evaporator. An advanced low-temp vacuum evaporator is designed.