Static graphite-dust removing method based on double dust removing units

Abstract

The invention discloses a static graphite-dust removing method based on double dust removing units. The method is used for positive-electrode calcining and includes: setting a first fan unit to provide conveying power and generate negative-pressure air flow to convey high-temperature graphite powder so as to allow the graphite powder to sequentially pass a storage unit, a pre-dust-removing unit, acooling unit and a first dust removing unit; setting a second fan unit to provide dust removing power and generate negative-pressure air flow to convey the graphite powder and dust in the dischargingprocess of the graphite powder to pass a second dust removing unit; starting the first fan unit and the second fan unit to complete graphite conveying and discharging and dust removing. The method has the advantages that dust removing in the conveying and discharging processes are completed through double-fan-unit switching and the double dust removing units, and an advanced dust removing systemintegrating dust pretreatment, cooling, tail gas purification and flexible control is provided; the method is reasonable in procedure design, scientific in system structure, compact in system arrangement, convenient in system operation and maintenance and high in dust removing efficiency, and the purification and discharge requirements of high-pressure, high-temperature and high-concentration dustare satisfied sufficiently.

Description

technical field [0001] The invention relates to the technical field of dust removal for tail gas purification treatment, in particular to an electrostatic dust removal method for graphite dust based on double dust removal units. Background technique [0002] In the lithium-ion battery anode material production workshop, it is necessary to crush, grind, and sort graphite and other materials; Grind to very fine; due to the limitations of equipment and technology, it is inevitable to produce a large amount of dust in actual operation. Because these dust particles are very fine, it is difficult to settle when floating in the production workshop, which not only pollutes the workshop environment, but also affects the health of the operators in the workshop. It also poses a great threat; traditional lithium-ion battery anode material production workshop dust collectors are mostly cloth bag type and dry powder rotary type, but for very small dust particles, they will escape from the...

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Problems solved by technology

[0002] In the lithium-ion battery anode material production workshop, it is necessary to crush, grind, and sort graphite and other materials; Grind to very fine; due to the limitations of equipment and technology, it is inevitable to produce a large amount of dust in actual operation. Because these dust particles are very fine, it is difficult to settle when floating in the production workshop, which not only pollutes the workshop environment, but also affects the health of the operators in the workshop. It also poses a great threat; traditional lithium-ion battery anode material production workshop dust collectors are mostly cloth bag type and dry powder rotary type, but for very small dust particles, they will escape from the bag and cannot be completely settled, and the dust removal effect is not ideal

[0003] In view of the characteristics of the above-mentioned flue gas, dust removal equipment is often used to achieve the purpose of dust removal, but this kind of dust removal equipment must meet the characteristics of high pressure resistance, effective cooling, multiple dust removal to ensure emission standards, etc., space is restricted, and the design must be compact and easy to operate. easy maintenance

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