Exhausting and pressure stabilizing system of ternary battery anode material sintering atmosphere kiln

Abstract

The invention relates to the technical field of battery material sintering and discloses an exhausting and pressure stabilizing system of a ternary battery anode material sintering atmosphere kiln. The system comprises an exhausting device, a flue gas automatic adjusting device and a flue gas extraction device which are connected successively. The exhausting device communicates to the kiln, a pressure detection device is further connected to the kiln, the pressure detection device is in signal connection to the flue gas automatic adjusting device, the pressure detection device monitors a pressure of the kiln in real time and provides flue gas excess flow guidance to the flue gas automatic adjusting device, the flue gas extraction device comprises an exhaust fan and a first pressure detector for detecting the pressure of the flue gas discharged by the flue gas automatic adjusting device, the first pressure detector is arranged between the exhaust fan and the flue gas automatic adjustingdevice, and the first pressure detector is in signal connection to the exhaust fan. Closed loop control is achieved on exhausting and pressure stabilizing. By monitoring the pressure of the kiln andfeeding the pressure back to the flue gas automatic adjusting device, the flue gas extraction device senses the pressure of the flue gas, and the exhaust fan adjusts the suction power, so that an advantageous atmosphere of the kiln is guaranteed.

Description

technical field [0001] The invention relates to the technical field of battery material sintering, in particular to an exhaust gas and voltage stabilizing system for a ternary battery cathode material sintering atmosphere kiln. Background technique [0002] As a new generation of new energy materials, lithium-ion cathode materials have entered the stage of large-scale practical use. With the acceleration of industrialization, the demand for new energy in various industries and fields is also increasing. [0003] The sintering process of lithium-ion ternary battery cathode materials is a process that consumes a lot of oxygen and generates a lot of waste gas. The fluctuation of the ventilation rate of the atmosphere kiln and the large amount of gas generated at the beginning of sintering will lead to unstable pressure in the atmosphere kiln. If the kiln pressure decreases, the exhaust gas in the furnace will be discharged too quickly, which will not only reduce the oxygen part...

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Problems solved by technology

[0003] The sintering process of lithium-ion ternary battery cathode materials is a process that consumes a lot of oxygen and generates a lot of waste gas. The fluctuation of the ventilation rate of the atmosphere kiln and the large amount of gas generated in the initial stage of sintering will cause the pressure in the atmosphere kiln to be unstable.

If the kiln pressure decreases, the exhaust gas in the furnace will be discharged too quickly, which will not only reduce the oxygen partial pressure of the kiln, but also cause changes in the temperature field of the kiln, which is not conducive to the formation and growth of grains; if the kiln pressure increases If it is too large, the exhaust gas in the furnace will be discharged too slowly, which will cause the exhaust gas in the furnace to be discharged in time, and will eventually affect the material properties.

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