Horizontal-tube carbon intermediate continuous thermal treatment device

Abstract

The invention relates to a horizontal-tube carbon intermediate continuous thermal treatment device. The horizontal-tube carbon intermediate continuous thermal treatment device comprises a feeding system, a heating segment, a cooling segment, a tail gas system and a discharging system which are connected in sequence, wherein the feeding system consists of a conical stock cabin of which the bottom is provided with a hopper hole, and a feeding machine; the feeding system, the heating segment, the cooling segment and the discharging system are connected with a measuring and controlling system through a sensing circuit; long barrels enclosed by sealing covers are arranged at the two ends of a heating segment horizontal tube; the transverse sections of the long barrels have bilaterally-symmetrical straight edges and longitudinally-symmetrical semi-circular-arc edges; a first screw rod is arranged in the lower semi-circular-arc edge of each whole segment of long barrel; the cooling segment is a metal long barrel of which the two ends are enclosed by sealing covers; the outer surface of the metal long barrel is provided with an interlayer water jacket. The horizontal-tube carbon intermediate continuous thermal treatment device is used for treating carbon intermediates, mainly powder or small particles, and has the advantages of low energy consumption, low cost, easiness in operation, and lowering of pollution to the maximum extent.

Description

technical field [0001] The invention relates to a horizontal tube type continuous heat treatment device for carbonaceous intermediates, which is mainly for continuous heat treatment of carbonaceous intermediate materials mainly composed of powder or small particles, and the device can meet the requirements of isolating air and eliminating combustible materials when the materials are heated. More specifically, its main application field is the carbonization treatment of lithium-ion battery anode material intermediates. Background technique [0002] In the industrial production of carbon anode materials for lithium-ion batteries, it is often necessary to heat-treat carbonaceous intermediates at around 1000 °C, which is usually called carbonization treatment in the industry, and the corresponding equipment is called carbonization furnace. Some types of carbonaceous intermediates can be directly used or sold as negative electrode products after carbonization treatment. There is...

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Problems solved by technology

[0004] As a heat treatment device for carbonaceous intermediate materials mainly composed of powder or small particles, the pusher kiln has many shortcomings that are difficult to overcome: 1. Heating elements and The loss of the crucible is very large, and the cost of equipment operation and maintenance is high; 2. The carbonaceous intermediate material to be heat-treated is indirectly heated, and the heating of the push plate and the crucible is ineffective heating, with low thermal efficiency and high energy consumption

3. The use of a large amount of inert protective gas further increases the production cost; 4. Manual loading and discharging of the crucible is cumbersome to operate and pollutes, which increases the workload of the operator and is not conducive to the health of the operator; 5. , The volatile matter produced by high-volatile materials will deposit carbon on the heating elements of the pusher kiln at high temperatures, resulting in frequent damage to the heating elements, so the pusher kiln cannot process high-volatile materials

[0005] As a heat treatment device for carbonaceous intermediate materials mainly composed of powder or small particles, the well-type furnace has obvious shortcomings: 1. Intermittent operation , the production cycle is long, it is impossible to achieve large-scale continuous production, and the unit equipment capacity is low; 2. In each production process, the heating of the furnace by the heating device is also ineffective heating, and there is a large waste of energy and low thermal efficiency; 3. Furnace screens are repeatedly rapidly cooled and heated, resulting in generally low service life of furnace screens; 4. Since furnace screens are mostly in the form of deep wells, the operation process is cumbersome and full of dust, which also has a large workload for operators and is not conducive to the health of operators Case

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