Hot air recovery system for copper dissolving tank

Abstract

The utility model relates to the technical field of copper foil production equipment, and discloses a hot air recovery system for a copper dissolving tank, which comprises the copper dissolving tank, a liquid storage tank, a recovery pipe and an overflow pipe, the copper dissolving tank is provided with an air inlet and a liquid outlet; the air inlet is positioned above the liquid outlet; one end of the recovery pipe is communicated with the air inlet, and the other end of the recovery pipe is communicated with the liquid storage tank and is positioned above the liquid level of the liquid storage tank; one end of the overflow pipe is communicated with the liquid outlet, the other end of the overflow pipe is communicated with the liquid storage tank, and the port is positioned below the liquid level of the liquid storage tank; and the recovery pipe is used for conveying the hot acid gas in the liquid storage tank back into the copper dissolving tank. The recovery system can be used for recycling the acid gas with higher temperature in the liquid storage tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper foil production equipment technical field especially relates to a kind of copper dissolving tank hot air recovery system. BACKGROUND

[0002] In the copper foil production process, electrolyte in liquid storage tank will release acidic gas due to high temperature, therefore, it is necessary to invest in air extraction equipment and acidic gas treatment equipment to treat acidic gas, which increases the production cost of enterprises, and the acidic gas and heat in the liquid storage tank are also wasted.

[0003] CN202121591971 discloses a kind of copper dissolving tank exhaust emission device, including copper dissolving tank, the air inlet pipe being arranged at the lower part of copper dissolving tank and the exhaust pipe being arranged at the upper part of copper dissolving tank, characterized by further comprising heat exchanger, the heat absorption side of the heat exchanger is communicated with exhaust pipe, the heat release side of the heat exchanger and air inlet pipe are communicated.The emission device uses heat exchanger to heat compressed air with the heat of exhaust gas, and the compressed air is then delivered back to copper dissolving tank for heating, but the heat transfer through heat exchanger is low in efficiency, and the acidic gas cannot be recycled and utilized, and still needs to be treated.

[0004] The technical problem to be solved by the utility model is how to recycle and utilize the acidic gas with high temperature in the liquid storage tank. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a kind of copper dissolving tank hot air recovery system, by being arranged between liquid storage tank and copper dissolving tank recovery pipe, the hot acid gas volatilized in liquid storage tank is delivered back to copper dissolving tank, to provide acid gas, air and heat for copper dissolving tank, to improve the utilization rate of resources.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] A kind of copper dissolving tank hot air recovery system, including copper dissolving tank, liquid storage tank, recovery pipe, overflow pipe;The copper dissolving tank is equipped with air inlet and liquid outlet;The air inlet is located above the liquid outlet;One end of the recovery pipe is communicated with the air inlet, the other end is communicated with the liquid storage tank and the port is above the liquid level of the liquid storage tank;One end of the overflow pipe is communicated with the liquid outlet, the other end is communicated with the liquid storage tank and the port is below the liquid level of the liquid storage tank;The recovery pipe is used to deliver the hot acid gas in the liquid storage tank back to the copper dissolving tank.

[0008] Preferably, the recovery pipe delivers the hot acid gas in the liquid storage tank back to the copper dissolving tank by pressure difference or installing pump body.

[0009] Preferably, the copper dissolving tank is equipped with a circulating module;The circulating module is used to pump the electrolyte at the bottom of copper dissolving tank to the top of copper dissolving tank.

[0010] Preferably, the circulating module is a magnetic force pump; the circulating module is provided with an inlet and an outlet; the inlet is communicated with the bottom of the copper dissolving tank; and the outlet is communicated with the top of the copper dissolving tank.

[0011] Preferably, the system further comprises an air extraction unit for extracting gas in the liquid storage tank; the liquid storage tank is provided with an air extraction pipe; the end surface of the air extraction pipe is located above the liquid surface of the liquid storage tank; and the air extraction unit is communicated with the air extraction pipe.

[0012] Preferably, the system further comprises a heating unit; the heating unit is used for introducing hot air into the top of the copper dissolving tank.

[0013] Preferably, the heating unit comprises a air supply module, a gas conveying pipe and a heating module for heating gas in the gas conveying pipe; the air supply module, the heating module and the top of the copper dissolving tank are sequentially communicated with the gas conveying pipe.

[0014] Preferably, the system further comprises a control unit; the control unit is in communication connection with the air supply module and the heating module respectively; the copper dissolving tank is provided with a temperature sensor; and the temperature sensor is in communication connection with the control unit.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The hot air recovery system of the present application sets a recovery pipe between the liquid storage tank and the copper dissolving tank, so that the hot acid gas volatilized in the liquid storage tank is transported back to the copper dissolving tank by the pressure difference, thereby providing part of the acid gas, heat and air in the copper dissolving tank, avoiding the waste of the hot acid gas in the liquid storage tank, improving the utilization rate of resources and reducing the production cost of enterprises.

[0017] Secondly, the copper dissolving tank is also provided with an air extraction unit, which is used for transporting the hot acid gas in the liquid storage tank that cannot be extracted by the recovery pipe to an external purification system for treatment, so that the burden of the external purification system can be reduced by the cooperation of the air extraction unit and the recovery pipe, the acid gas can be completely treated, part of the hot acid gas in the liquid storage tank can be recovered to the copper dissolving tank for recycling, and the production cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of the hot air recovery system of the copper dissolving tank of Embodiment 1.

[0019] Wherein: the copper dissolving tank 1; the liquid storage tank 2; the recovery pipe 3; the overflow pipe 4; the air extraction unit 5; the heating unit 6; the air inlet 11; the first liquid outlet 12; the circulating module 13; the air extraction pipe 14; the air supply module 61; the gas conveying pipe 62; the heating module 63; the liquid inlet 131; the second liquid outlet 132. DETAILED DESCRIPTION

[0020] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Embodiment 1

[0022] Reference Figure 1 A hot air recovery system of a copper dissolving tank, comprising a copper dissolving tank 1, a liquid storage tank 2, a recovery pipe 3, and an overflow pipe 4; the copper dissolving tank 1 is provided with an air inlet 11 and a first liquid outlet 12; the air inlet 11 is located above the first liquid outlet 12; one end of the recovery pipe 3 is in communication with the air inlet 11, and the other end is in communication with the liquid storage tank 2 and the port is above the liquid level of the liquid storage tank 2; one end of the overflow pipe 4 is in communication with the first liquid outlet 12, and the other end is in communication with the liquid storage tank 2 and the port is below the liquid level of the liquid storage tank 2; the recovery pipe 3 is used to transport the hot acid gas in the liquid storage tank 2 back into the copper dissolving tank 1.

[0023] In the present embodiment, the liquid storage tank 2 is used to temporarily store the electrolyte flowing down from the copper dissolving tank 1, and the pipe opening of the recovery pipe 3 connected to one end of the liquid storage tank 2 needs to be above the liquid level, so that the hot acid gas volatilized from the liquid storage tank 2 can enter the copper dissolving tank 1 through the recovery pipe 3; and the pipe opening of the overflow pipe 4 connected to one end of the liquid storage tank 2 needs to be immersed below the liquid level, so as to avoid the hot acid gas from hindering the electrolyte from flowing into the liquid storage tank 2.

[0024] The copper dissolving tank 1 will continuously be supplied with electrolyte, and part of the high-temperature electrolyte will flow into the liquid storage tank 2 through the overflow pipe 4, so that the liquid storage tank 2 will continuously volatilize hot acid gas, and when the amount of hot acid gas is relatively large, the gas pressure in the liquid storage tank 2 is greater than the gas pressure in the copper dissolving tank 1, so that the hot acid gas is transported into the copper dissolving tank 1 through the recovery pipe 3, thereby providing the copper dissolving tank 1 with acid gas, heat, and air, and improving the utilization rate of resources.

[0025] Preferably, the recovery pipe 3 transports the hot acid gas in the liquid storage tank 2 back into the copper dissolving tank 1 through the action of pressure difference or by installing a pump body.

[0026] In the present embodiment, the hot acid gas is transported through the action of pressure difference, and only the recovery pipe 3 needs to be provided, so the structure is simple and the cost is low. However, a pump body can also be provided in the recovery pipe 3, and the pump body is an air suction pump, which actively sucks the hot acid gas in the liquid storage tank 2 into the copper dissolving tank 1.

[0027] Preferably, the copper dissolving tank 1 is provided with a circulating module 13; the circulating module 13 is used to draw the electrolyte at the bottom of the copper dissolving tank 1 to the top of the copper dissolving tank 1.

[0028] In the embodiment, the circulating module 13 is arranged to draw the electrolyte at the bottom of the copper dissolving tank 1 to the top of the copper dissolving tank 1, so that the electrolyte can be in more sufficient contact with the hot acid gas sprayed in the recovery pipe 3, and absorb oxygen, heat and supplemental acid gas therein.

[0029] Preferably, the circulating module 13 is a magnetic pump; the circulating module 13 is provided with a liquid inlet 131 and a first liquid outlet 12; the liquid inlet 131 is in communication with the bottom of the copper dissolving tank 1; and the first liquid outlet 12 is in communication with the top of the copper dissolving tank 1.

[0030] In the embodiment, the liquid inlet 131 of the circulating module 13 is in communication with the bottom of the copper dissolving tank 1 through a pipeline, and the first liquid outlet 12 is in communication with the top of the copper dissolving tank 1 through a pipeline. After the raw materials are put in, the circulating module 13 is started, and the electrolyte at the bottom of the copper dissolving tank 1 is drawn to the top of the copper dissolving tank 1 by the circulating module 13, so that the electrolyte at the bottom can also be in sufficient contact with the heat source at the top, so that the overall temperature of the electrolyte is more uniform, and the copper acid reaction is also promoted.

[0031] Preferably, the system further comprises an air extraction unit 5 for extracting gas in the liquid storage tank 2; the liquid storage tank 2 is provided with an air extraction pipe 14; an end surface of the air extraction pipe 14 is located above the liquid level of the liquid storage tank 2; and the air extraction unit 5 is in communication with the air extraction pipe 14.

[0032] In the embodiment, the air extraction unit 5 is an air extraction pump. Since the hot acid gas is continuously emitted in the liquid storage tank 2, the recovery pipe 3 cannot necessarily completely transport the hot acid gas back to the copper dissolving tank 1, and therefore the air extraction unit 5 is arranged to extract part of the hot acid gas in the liquid storage tank 2 to an external purification system for treatment of the hot acid gas, so as to avoid direct emission of the acid gas to the outside environment and affect the environment. By using the air extraction unit 5 together with the recovery pipe 3, the hot acid gas in the liquid storage tank can be utilized, and the amount of the hot acid gas in the liquid storage tank 2 can be ensured to be within a proper range, so as to avoid acid gas leakage.

[0033] Preferably, the system further comprises a heating unit 6; and the heating unit 6 is used to introduce hot air to the top of the copper dissolving tank 1.

[0034] In the embodiment, the heating unit 6 is arranged at the top of the copper dissolving tank 1, and when the hot acid gas in the recovery pipe 3 cannot provide sufficient heat and oxygen, the heating unit 6 can provide part of the oxygen and heat, so as to ensure normal operation of production.

[0035] Preferably, the heating unit 6 comprises a air supply module 61, a gas conveying pipe 62, and a heating module 63 for heating gas in the gas conveying pipe 62; the air supply module 61, the heating module 63 and the top of the copper dissolving tank 1 are sequentially in communication with the gas conveying pipe 62.

[0036] In the embodiment, the heating module 63 is an air heater, and the air supply module 61 is a blower. When the temperature in the copper dissolving tank 1 is not high enough, the air supply module 61 and the heating module 63 are started, the air supply module 61 sends air into the air heater through the air pipe 62, the air heater heats the air flowing therethrough to form hot air, and then the hot air is sent into the copper dissolving tank 1 through the air pipe 62 to heat the electrolyte.

[0037] Preferably, the device further comprises a control unit, the control unit is in communication connection with the air supply module 61 and the heating module 63 respectively, and the copper dissolving tank 1 is provided with a temperature sensor, the temperature sensor is in communication connection with the control unit.

[0038] In the embodiment, the control unit is a PLC, the PLC is in communication connection with the air supply module 61, the heating module 63 and the temperature sensor, the temperature sensor detects the temperature of the electrolyte in the copper dissolving tank 1 in real time, when the temperature of the electrolyte cannot reach the target temperature, the PLC drives the air supply module 61 and the heating module 63 to work, and hot air is sent into the copper dissolving tank 1, so that the temperature of the electrolyte is increased to the target temperature, and the copper dissolving speed is ensured.

[0039] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A copper dissolving tank hot air recovery system characterized by, The copper dissolving tank, the liquid storage tank, the recovery pipe and the overflow pipe are included; the copper dissolving tank is provided with an air inlet and a liquid outlet; the air inlet is located above the liquid outlet; one end of the recovery pipe is communicated with the air inlet, and the other end is communicated with the liquid storage tank and the port is located above the liquid level of the liquid storage tank; one end of the overflow pipe is communicated with the liquid outlet, and the other end is communicated with the liquid storage tank and the port is located below the liquid level of the liquid storage tank; the recovery pipe is used for conveying the hot acid gas in the liquid storage tank back to the copper dissolving tank.

2. The copper tank hot air recovery system of claim 1, wherein, The recovery pipe realizes the conveying of the hot acid gas in the liquid storage tank back to the copper dissolving tank through the pressure difference or the installation of a pump body.

3. The copper pot fume air recovery system of claim 1 wherein, The copper dissolving tank is provided with a circulating module; the circulating module is used for pumping the electrolyte at the bottom of the copper dissolving tank to the top of the copper dissolving tank.

4. The copper pot fume air recovery system of claim 3 wherein, The circulating module is a magnetic pump; the circulating module is provided with an inlet and an outlet; the inlet is communicated with the bottom of the copper dissolving tank; the outlet is communicated with the top of the copper dissolving tank.

5. The copper pot fume air recovery system of claim 1 wherein, The device further includes an air extraction unit for extracting the gas in the liquid storage tank; the liquid storage tank is provided with an air extraction pipe; the end surface of the air extraction pipe is located above the liquid level of the liquid storage tank; the air extraction unit is communicated with the air extraction pipe.

6. The copper pot fume recovery system of claim 1 wherein, The device further includes a heating unit; the heating unit is used for introducing hot air into the top of the copper dissolving tank.

7. The copper pot fume air recovery system of claim 6 wherein, The heating unit includes a air supply module, a gas conveying pipe and a heating module for heating the gas in the gas conveying pipe; the air supply module, the heating module and the top of the copper dissolving tank are sequentially communicated with the gas conveying pipe.

8. The copper pot fume recovery system of claim 7, wherein, The device further includes a control unit; the control unit is respectively communicated with the air supply module and the heating module; the copper dissolving tank is provided with a temperature sensor; the temperature sensor is communicated with the control unit.

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