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CN-121977377-A - Air heat exchange system of efficient copper dissolving tank and application method

CN121977377ACN 121977377 ACN121977377 ACN 121977377ACN-121977377-A

Abstract

The invention discloses an air heat exchange system of a high-efficiency copper dissolving tank and a use method thereof, comprising the copper dissolving tank and a sewage tank which are connected through a pipeline, and further comprising a heat exchanger, wherein a first medium inlet of the heat exchanger is communicated with the top of the copper dissolving tank through a vortex flowmeter and a pneumatic regulating valve, a first medium outlet of the heat exchanger is communicated with an acid mist tower through a draught fan, a heat exchange pipeline communicated with the outside air is arranged in the sewage tank, the heat exchange pipeline is simultaneously communicated with a second medium inlet of the heat exchanger, and a second medium outlet of the heat exchanger is communicated with a hot air pipe in the copper dissolving tank through a pipeline. The invention can solve the problems of insufficient air quantity control precision, easy reduction of the temperature of a copper dissolving tank, serious heat loss and incapability of quantitatively controlling the oxygen content of the traditional copper dissolving liquid making system.

Inventors

  • KE XIANFENG
  • LIU HAIFENG
  • WANG PENG
  • DUAN BIN
  • LAI XIAOKANG

Assignees

  • 九江琥珀新材料有限公司
  • 九江德福科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260119

Claims (8)

  1. 1. The utility model provides an air heat exchange system of high-efficient copper jar that dissolves, includes copper jar (1) and dirty liquid jar (19) that dissolves, copper jar (1) and dirty liquid jar (19) between link to each other through the pipeline, its characterized in that still includes heat exchanger (6), first medium entry (9) of heat exchanger (6) be linked together through vortex flowmeter (4) and pneumatic control valve (2) and the top of dissolving copper jar (1), first medium export (10) of heat exchanger (6) be linked together with acid mist tower (8) through draught fan (7), dirty liquid jar (19) in be provided with heat exchange pipeline (16) with outside air intercommunication, heat exchange pipeline (16) be linked together with second medium entry (11) of heat exchanger (6) simultaneously, second medium export (12) of heat exchanger (6) be linked together through pipeline and the inside hot-blast main (5) of dissolving copper jar (1).
  2. 2. The air heat exchange system of the efficient copper dissolving tank as claimed in claim 1, wherein an oxygen concentration analyzer (13) is arranged on a pipeline between the induced draft fan (7) and the first medium outlet (10), and the oxygen concentration analyzer (13), the pneumatic regulating valve (2), the induced draft fan (7) and the vortex flowmeter (4) are all in communication connection with the PLC control module (3).
  3. 3. The air heat exchange system of the efficient copper dissolving tank as claimed in claim 2, wherein a liquid-gas separator (14) is further arranged on a pipeline between the copper dissolving tank (1) and the first medium inlet (9), and the bottom of the liquid-gas separator (14) is communicated with the copper dissolving tank (1) through a liquid pump (15).
  4. 4. The air heat exchange system of the high-efficiency copper dissolving tank as claimed in claim 3, wherein the lower part of the copper dissolving tank (1) is communicated with the sewage tank (19) through an overflow port (17).
  5. 5. The air heat exchange system of the efficient copper dissolving tank as claimed in claim 4, wherein the hot air pipe (5) is transversely arranged inside the copper dissolving tank (1), and a plurality of upward air nozzles are arranged on the hot air pipe (5) along the length direction.
  6. 6. The air heat exchange system of the high-efficiency copper dissolving tank as claimed in claim 4, wherein the sewage tank (19) is connected with the top of the copper dissolving tank (1) through a copper supplementing pump (18).
  7. 7. The air heat exchange system of the high-efficiency copper dissolving tank as claimed in claim 1, wherein the heat exchanger (6) is a plate heat exchanger, and the surface of a heat exchange plate of the heat exchanger (6) is provided with a corrosion-resistant coating.
  8. 8. A method of using the air heat exchange system of a high efficiency copper melting tank of claim 3, comprising the steps of: s1, starting a copper supplementing pump (18), enabling a copper sulfate solution in a sewage tank (19) and a copper sulfate solution in a copper dissolving tank (1) to circularly flow through a pipeline, and maintaining the liquid level balance of the solutions in the two tanks; S2, starting an induced draft fan (7), generating negative pressure in the copper dissolving tank (1), enabling external new air to enter a heat exchange pipeline (16) in the sewage tank (19), performing primary heat exchange with a copper sulfate solution in the sewage tank (19), and raising the temperature of the new air; s3, enabling the new air subjected to the first heat exchange to enter a second medium inlet (11) of the heat exchanger (6), enabling high Wen Suanwu waste gas in the copper dissolving tank (1) to sequentially pass through the pneumatic regulating valve (2), the vortex flowmeter (4) and the liquid-gas separator (14), enabling the new air to enter the heat exchanger (6) from a first medium inlet (9) of the heat exchanger (6), and enabling the new air to perform second heat exchange with high-temperature acid mist waste gas; s4, detecting the flow of acid mist waste gas in real time by the vortex flowmeter (4), transmitting a flow signal to the PLC control module (3), and adjusting the opening of the pneumatic regulating valve (2) by the PLC control module (3) according to a preset flow threshold value to accurately control the gas flow; S5, enabling the new air subjected to the second heat exchange to enter the hot air pipe (5) through a second medium outlet (12) of the heat exchanger (6), and uniformly spraying the new air into the copper dissolving tank (1) through air spraying ports on the hot air pipe (5); S6, discharging acid mist waste gas after heat exchange from a first medium outlet (10) of the heat exchanger (6), detecting the oxygen content in the waste gas in real time by an oxygen concentration analyzer (13) and transmitting the oxygen content to a PLC control module (3), and if the oxygen content is higher than a preset standard value X, reducing the rotating speed of a draught fan (7) and reducing the opening of a pneumatic regulating valve (2) by the PLC control module (3), and if the oxygen content is lower than the preset standard value X, improving the rotating speed of the draught fan (7) and increasing the opening of the pneumatic regulating valve (2) by the PLC control module (3) so as to ensure the sufficient oxygen content in a copper dissolving tank (1); s7, sending the acid mist waste gas subjected to oxygen content detection into an acid mist tower (8) through a draught fan (7) for treatment and then discharging.

Description

Air heat exchange system of efficient copper dissolving tank and application method Technical Field The invention relates to the technical field of electrolytic copper foil manufacturing equipment, in particular to an air heat exchange system of a high-efficiency copper dissolving tank and a use method thereof. Background The electrolytic copper foil is used as a lithium battery and an electronic base material, is widely applied to the fields of new energy batteries, printed Circuit Boards (PCBs) and the like, and the production process mainly comprises four core processes of copper dissolving liquid preparation, electrolytic foil production, surface treatment, slitting and packaging. The copper dissolving and preparing system is a basic link of electrolytic copper foil production, and the system needs to convert copper raw materials such as copper wires, copper meters and the like into copper sulfate solution under the conditions of specific temperature, acidity and oxygen content, thereby providing qualified basic electrolyte for the subsequent electrolytic foil production process. The dissolution efficiency of copper wires and copper meters directly determines the production efficiency of electrolytic copper foil, and the energy consumption level of the copper dissolution process directly influences the production cost of the product. Currently, the electrolytic copper foil industry is increasingly competitive, and the promotion of copper dissolution efficiency and the reduction of production energy consumption become the key of enterprises to keep market competitiveness. However, the existing copper-dissolving liquid-making system has a plurality of technical defects in practical application, and the improvement of production efficiency and the optimization of energy consumption are severely restricted: 1. The existing system regulates the air quantity through a manual air valve, combines an anemometer to measure the air quantity, is easily influenced by human factors by manual operation, has limited measurement accuracy, cannot realize accurate regulation and control of the air quantity, and causes unstable supply of oxygen content in a copper dissolving tank; 2. The temperature of the copper dissolving tank is easy to be reduced, the temperature of new air entering the copper dissolving tank is usually 20-40 ℃, the continuous introduction of low-temperature air can directly reduce the reaction temperature in the copper dissolving tank, the copper dissolving reaction efficiency is closely related to the temperature, and the reduction of the temperature can obviously reduce the dissolution rate of copper raw materials; 3. the heat loss is serious, and in order to ensure the sufficient oxygen content in the copper dissolving tank, the induced draft fan needs to continuously pump acid mist waste gas in the tank, so that new air can smoothly enter. However, a large amount of heat is carried in the acid mist waste gas, and the heat in the copper dissolving tank is lost in a large amount in the pumping and discharging process, so that the energy consumption is increased, and the energy-saving production requirement is not met; 4. The oxygen content can not be quantitatively controlled, the existing system does not detect the oxygen content in the acid mist waste gas, and whether the oxygen content in the copper dissolving tank meets the reaction requirement can not be accurately judged. If the oxygen content in the waste gas is too high, the new air flow introduced is too large, so that heat loss is increased, the temperature in the tank is reduced, and if the oxygen content is too low, the oxidation requirement of copper raw material dissolution cannot be met, and the copper dissolution efficiency is also influenced. Therefore, research and development of a copper-dissolving tank air heat exchange system capable of accurately controlling air quantity and oxygen content, reducing heat loss and improving copper-dissolving efficiency has become a technical problem to be solved in the field of electrolytic copper foil manufacturing. Disclosure of Invention The invention provides an air heat exchange system of a high-efficiency copper dissolving tank and a use method thereof, which can solve the problems that the air quantity control precision of the traditional copper dissolving liquid system is insufficient, the temperature of the copper dissolving tank is easy to reduce, the heat loss is serious and the oxygen content cannot be quantitatively controlled. In order to achieve the aim, the air heat exchange system of the efficient copper dissolving tank comprises the copper dissolving tank and the waste liquid tank which are connected through pipelines, and further comprises a heat exchanger, wherein a first medium inlet of the heat exchanger is communicated with the top of the copper dissolving tank through a vortex flowmeter and a pneumatic regulating valve, a first medium outlet of the heat exchanger is commu