Single-horizontal-pipe type continuous heat treatment device for carbon intermediate

Abstract

The invention relates to a single-horizontal-pipe type continuous heat treatment device for a carbon intermediate. The device comprises a feeding system, a heating section, a cooling section, a tail gas system and a discharging system, which are sequentially connected, wherein the feeding system is formed by a tapered feed bin with a bottom funnel opening, and a feeder; the feeding system, the heating section, the cooling section and the discharging system are connected with a measurement and control system through a sensing circuit; the heating section is a long barrel of which the two ends are sealed by sealing covers, and the cross section of the long barrel is formed by left and right symmetric straight edges and upper and lower symmetric semicircular arc edges; a first screw rod is arranged in the whole lower semicircular arc edge of the whole long barrel; the cooling section is a metal long cylinder of which the two ends are sealed by sealing covers; an interlayer water jacket is arranged on the outer surface of the metal long cylinder. The device is used for treating carbon intermediate materials which mainly comprise powder or small particles, and is low in energy consumption and cost and easy to operate, and pollution is maximally reduced.

Description

technical field [0001] The invention relates to a single-horizontal tubular carbonaceous intermediate continuous heat treatment device, which is mainly used 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 removing air when the material is heated. The requirements of flammable volatile components, more specifically, its main application field is the carbonization treatment of lithium-ion battery negative electrode 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 pro...

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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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