CN216755849U

CN216755849U - Pitch recovery system of graphite negative electrode material production usefulness

Info

Publication number: CN216755849U
Application number: CN202220438810.5U
Authority: CN
Inventors: 于连武; 徐国新; 夏晓敏; 黄奕臻; 赵振宇; 张宇石; 周波
Original assignee: Heilongjiang Prade New Material Technology Co ltd
Current assignee: China Building Materials Heilongjiang Graphite New Material Co ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-06-17
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses an asphalt recovery system for producing a graphite negative electrode material, belongs to the technical field of lithium battery manufacturing, and aims to solve the problem of high treatment cost of asphalt smoke generated in the production process of the graphite negative electrode material. Comprises a spray chamber, a separation tank, a spray pipe, a cooler and a recovery tank. The knockout drum accepts the liquid outlet of spray room, and the left sub-unit connection pitch smog pipe of spray room, the top of spray room are equipped with the shower nozzle, and the lower part of knockout drum is passed through the shower and is connected with the shower nozzle, and the upper portion of knockout drum is equipped with the overflow pipe, and the export of overflow pipe is accepted to the accumulator. Asphalt smoke enters the spray chamber, liquid asphalt is separated out through circulating water spray cooling, the liquid asphalt enters the separation tank along with the circulating water and flows into the recovery tank through the overflow pipe, the residual gas of the asphalt smoke is pure air, the system treats the asphalt smoke without consuming natural gas, the production cost of graphite cathode materials is greatly reduced, the recovered asphalt can be recycled, and the risk of using the natural gas is avoided.

Description

Pitch recovery system of graphite negative electrode material production usefulness

Technical Field

The utility model belongs to the technical field of lithium battery manufacturing, and particularly relates to an asphalt recovery system for producing a graphite negative electrode material.

Background

The graphite cathode material of the lithium battery is manufactured by taking high-purity spherical graphite and high-temperature asphalt as raw materials, and the asphalt is coated on the surface of the graphite through kiln calcination. Asphalt is heated at high temperature to be changed into colloidal liquid from solid state, and simultaneously gas state smoke is generated, the asphalt smoke is toxic and harmful to human bodies, so the asphalt smoke is generally collected and then combusted, the asphalt smoke needs to be mixed with natural gas and then combusted, and the asphalt smoke generated by each kiln per hour needs to consume 20m³The natural gas treatment greatly increases the production cost of the graphite cathode material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an asphalt recycling system for producing a graphite cathode material, which aims to solve the problem of high treatment cost of asphalt smoke generated in the production process of the graphite cathode material. The technical scheme adopted by the utility model is as follows:

an asphalt recovery system for producing graphite cathode materials comprises a spray chamber, a separation tank, a spray pipe, a cooler and a collection tank; spray room and knockout drum set up from top to bottom, and the liquid outlet of spray room bottom is accepted to the top opening of knockout drum, and the left sub-unit connection of spray room has pitch smog pipe, and the upper right portion of spray room is connected with the blast pipe, and the top of spray room is equipped with the shower nozzle, and the lower part of knockout drum is passed through the shower and is connected with the shower nozzle, is equipped with force (forcing) pump and cooler along water flow direction on the shower in proper order, and the upper portion of knockout drum is equipped with the overflow pipe, and the export of overflow pipe is accepted to the collection tank.

Furthermore, the inner side of the bottom wall of the spray chamber is a conical surface which is concave downwards.

Furthermore, the device also comprises a water replenishing pipe, wherein the water inlet end of the water replenishing pipe is connected with a water source, and the separating tank is connected with the water outlet end of the water replenishing pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. add the circulating water through the moisturizing pipe in to the knockout drum, the circulating water is gone into in the spray chamber through the force (forcing) pump, by the shower nozzle blowout, pitch smog gets into the spray chamber by spray chamber left side lower part, through circulating water spray cooling, gaseous pitch in the pitch smog is appeared and is condensed into liquid pitch, fall into the knockout drum by spray chamber bottom liquid outlet along with the circulating water, the blast pipe of spray chamber sets up on upper right portion, make pitch smog just discharge through abundant spray cooling, gaseous pitch that wherein contains can condense completely and appear, the residual gas is pure air, can directly discharge into the atmosphere, this system no longer consumes the natural gas to pitch smog's processing, reduce graphite negative pole material's manufacturing cost by a wide margin.

2. The separated liquid asphalt is light oily, floats on the circulating water surface in the separation tank and is not easy to solidify, the circulating water in the system is gradually reduced slightly due to evaporation, the liquid level of the circulating water in the separation tank is controlled through the water replenishing pipe, the liquid asphalt flows into the recovery tank through the overflow pipe, the recovered asphalt can be reused, and through actual measurement, the amount of the asphalt recovered from the asphalt smoke generated by each kiln can reach 300 kilograms per month, so that the cost is further saved.

3. The natural gas is a fuel and a major hazard source, and the utility model avoids using the natural gas to burn asphalt smoke, thereby avoiding the danger of flammability and explosiveness.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1-a separation tank, 11-an overflow pipe, 2-a pressure pump, 3-a spray pipe, 4-a cooler, 5-a spray chamber, 51-an asphalt smoke pipe, 52-a spray head, 53-an exhaust pipe, 54-a liquid outlet, 6-a water replenishing pipe and 7-a collection tank.

Detailed Description

In order that the objects, aspects and advantages of the utility model will become more apparent, the utility model will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The connection mentioned in the utility model is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection and comprises but is not limited to folding edge connection, rivet connection, bonding connection, welding connection and other conventional fixed connection modes, the detachable connection comprises but is not limited to bolt connection, buckle connection, pin connection, hinge connection and other conventional detachment modes, when the specific connection mode is not clearly limited, the skilled person can select at least one connection mode from the existing connection modes to realize the function according to the needs. For example: the fixed connection selects welding connection, and the detachable connection selects bolt connection.

The present invention will be described in further detail with reference to the accompanying drawings, and the following examples are illustrative of the present invention, but the present invention is not limited to the following examples.

As shown in the figure, the asphalt recovery system for producing the graphite cathode material comprises a spray chamber 5, a separation tank 1, a spray pipe 3, a cooler 4 and a collection tank 7; spray chamber 5 and knockout drum 1 set up from top to bottom, the liquid outlet 54 of spray chamber 5 bottom is accepted to the open-top of knockout drum 1, the left sub-unit connection of spray chamber 5 has pitch smog pipe 51, the upper right portion of spray chamber 5 is connected with blast pipe 53, the top of spray chamber 5 is equipped with shower nozzle 52, shower 3 is passed through to the lower part of knockout drum 1 and is connected with shower nozzle 52, be equipped with force (forcing) pump 2 and cooler 4 along the water flow direction in proper order on shower 3, the upper portion of knockout drum 1 is equipped with overflow pipe 11, the export of overflow pipe 11 is accepted to collection tank 7.

The inner side of the bottom wall of the spray chamber 5 is a conical surface which is concave downwards.

Still include moisturizing pipe 6, moisturizing pipe 6's the end of intaking is connected the water source, and knockout drum 1 accepts the play water end of moisturizing pipe 6.

Add the circulating water through moisturizing pipe 6 in to knockout drum 1, the circulating water is in the spray chamber through the 2 pump of force (forcing) pump, by the shower nozzle to, pitch smog gets into the spray chamber by pitch smog pipe 51 of the 5 left lower parts of spray chamber, through the cooling of shower nozzle 52 spun circulating water, gaseous pitch in the pitch smog is appeared and is condensed into liquid pitch, fall into knockout drum 1 by spray chamber 5 bottom liquid outlet 51 along with the circulating water, cooler 4 further cooling cycle water, the blast pipe of spray chamber 5 sets up on upper right portion, make pitch smog fully spray the cooling through the circulating water and just can discharge, gaseous pitch that contains can condense completely and separate out, the residual gas is pure air, can directly discharge into the atmosphere. The system does not consume natural gas any more in the treatment of the asphalt smoke, and the production cost of the graphite cathode material is greatly reduced.

The separated liquid asphalt is light oily, floats on the circulating water surface in the separating tank 1 and is not easy to solidify, the circulating water in the system is gradually reduced slightly due to evaporation, the liquid level of the circulating water in the separating tank 1 is controlled through the water supplementing pipe 6, the liquid asphalt flows into the recovery tank 7 through the overflow pipe 6, the recovered asphalt can be reused, and through actual measurement, the amount of the asphalt recovered from the asphalt smoke generated by each kiln can reach 300 kilograms per month, so that the cost is further saved.

The natural gas is a fuel and a major hazard source, and the utility model avoids using the natural gas to burn asphalt smoke, thereby avoiding the danger of flammability and explosiveness.

The above embodiments are merely illustrative of the present patent and do not limit the scope of the patent, and those skilled in the art can make modifications to the parts thereof without departing from the spirit and scope of the patent.

Claims

1. The utility model provides an asphalt recycling system of graphite negative electrode material production usefulness which characterized in that: comprises a spray chamber (5), a separation tank (1), a spray pipe (3), a cooler (4) and a collection tank (7); spray chamber (5) and knockout drum (1) set up from top to bottom, the top opening of knockout drum (1) accepts liquid outlet (54) of spray chamber (5) bottom, the left sub-unit connection of spray chamber (5) has pitch smog pipe (51), the upper right portion of spray chamber (5) is connected with blast pipe (53), the top of spray chamber (5) is equipped with shower nozzle (52), the lower part of knockout drum (1) is passed through shower (3) and is connected with shower nozzle (52), be equipped with force (forcing) pump (2) and cooler (4) along water flow direction in proper order on shower (3), the upper portion of knockout drum (1) is equipped with overflow pipe (11), the export of overflow pipe (11) is accepted in collection tank (7).

2. The asphalt recycling system for producing graphite anode materials as claimed in claim 1, wherein: the inner side of the bottom wall of the spray chamber (5) is a conical surface which is concave downwards.

3. The asphalt recycling system for graphite anode material production according to claim 1 or 2, characterized in that: the water-saving device is characterized by further comprising a water replenishing pipe (6), wherein the water inlet end of the water replenishing pipe (6) is connected with a water source, and the separating tank (1) is connected with the water outlet end of the water replenishing pipe (6).