Flue gas treatment device for supercapacitor electrode material production

Abstract

The invention discloses a flue gas treatment device for production of a supercapacitor electrode material. The flue gas treatment device comprises a cyclone dust collector, a Venturi wet washing tower; a photocatalytic oxidation reactor; an activated carbon adsorption box and an induced draft fan. A Venturi tube section is arranged in the Venturi wet washing tower; a spraying layer; the demisting layer and the circulating liquid tank are used for efficiently removing particulate matters and acid gas; ultraviolet lamp tubes and metal foam nets loaded with nano TiO are alternately arranged in the photocatalytic oxidation reactor to decompose organic pollutants; the activated carbon adsorption box performs deep adsorption. According to the device, a multi-stage combined treatment process is adopted, and dust generated in the electrode material production process is removed; the acid gas and organic waste gas purification efficiency is high, operation is stable and reliable, adaptability is high, and the environment-friendly emission requirement is met.

Description

Technical Field

[0001] This invention relates to the field of industrial waste gas treatment technology, and in particular to a flue gas treatment device for the production of supercapacitor electrode materials. Background Technology

[0002] The production of electrode materials for supercapacitors (such as activated carbon, transition metal oxides, and conductive polymers) typically involves high-temperature carbonization, activation, and chemical vapor deposition processes, which generate large amounts of flue gas containing dust, volatile organic compounds (VOCs), acidic gases (such as NOx and SO2), and harmful metal particles. Direct emission of these gases not only pollutes the environment but also harms human health.

[0003] Existing flue gas treatment equipment mostly adopts single dust removal or simple spraying methods, which are difficult to effectively remove pollutants with complex components in the flue gas produced by electrode materials. In particular, the synergistic removal efficiency of fine particulate matter and organic matter is low, and the equipment is prone to clogging and corrosion, which affects long-term stable operation. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a flue gas treatment device for the production of supercapacitor electrode materials, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flue gas treatment device for the production of supercapacitor electrode materials, comprising a cyclone dust collector for industrial waste gas treatment; a venturi wet scrubbing tower for industrial waste gas treatment; a photocatalytic oxidation reactor for industrial waste gas treatment; and an activated carbon adsorption box for industrial waste gas treatment, all connected in sequence via pipelines. The inlet of the cyclone dust collector for industrial waste gas treatment is connected to the flue gas outlet of the production equipment, and its outlet is connected to the inlet of the Venturi wet scrubber for industrial waste gas treatment via a pipeline. The Venturi wet scrubber industrial waste gas treatment includes a tower body, inside which, from bottom to top, are arranged a circulating liquid tank for industrial waste gas treatment; a Venturi tube section for industrial waste gas treatment; a spray layer for industrial waste gas treatment; and a demister layer for industrial waste gas treatment. The Venturi tube section for industrial waste gas treatment consists of a contraction section for industrial waste gas treatment; a throat section for industrial waste gas treatment; and an expansion section for industrial waste gas treatment. The throat section for industrial waste gas treatment is equipped with atomizing nozzles. The spray layer for industrial waste gas treatment is equipped with multiple spiral nozzles. The circulating liquid tank for industrial waste gas treatment has a drain outlet at the bottom and is connected to the atomizing nozzles and spiral nozzles on the side via a circulating pump. The photocatalytic oxidation reactor for industrial waste gas treatment has ultraviolet lamps and metal foam nets loaded with nano-TiO2 alternately arranged along the airflow direction.

[0006] As a preferred embodiment of the present invention, the inner wall of the cyclone dust collector for industrial waste gas treatment is lined with a wear-resistant ceramic layer.

[0007] As a preferred embodiment of the present invention, the tower body of the Venturi wet scrubber for industrial waste gas treatment is made of PPH material, and the circulating liquid tank for industrial waste gas treatment is equipped with an online pH monitor and an automatic dosing system.

[0008] As a preferred embodiment of the present invention, the bottom of the air inlet of the photocatalytic oxidation reactor for industrial waste gas treatment is connected to a flow equalization pipe for industrial waste gas treatment.

[0009] As a preferred embodiment of the present invention, differential pressure gauges are provided at both the inlet and outlet of the activated carbon adsorption box for industrial waste gas treatment.

[0010] As a preferred embodiment of the present invention, the activated carbon adsorption box for industrial waste gas treatment is equipped with a multi-layer drawer-type activated carbon fiber felt layer for industrial waste gas treatment.

[0011] As a preferred embodiment of the present invention, it further includes an induced draft fan, the inlet of which is connected to the outlet of the activated carbon adsorption box for industrial waste gas treatment, and the outlet of which is connected to a chimney.

[0012] The beneficial effects of this invention are: The process employs a multi-stage combination of "cyclone dust removal + Venturi wet scrubbing + photocatalytic oxidation + activated carbon adsorption" to achieve synergistic and efficient removal of pollutants such as dust, acidic gases, and VOCs from the flue gas produced in the production of supercapacitor electrode materials. The emission concentrations are far below the national environmental protection standards.

[0013] The Venturi wet scrubber combines the Venturi section with the spray layer to enhance gas-liquid mass transfer, resulting in high efficiency in removing fine particulate matter. It also features automatic pH adjustment, corrosion resistance, and is less prone to clogging, ensuring stable operation.

[0014] The photocatalytic oxidation reactor uses alternating arrangements of ultraviolet lamps and metal foam mesh to increase the reaction area, improve VOCs degradation efficiency, and eliminate secondary pollution.

[0015] With a compact overall structure, high degree of automation, and convenient maintenance, it is suitable for flue gas treatment in the supercapacitor electrode material production industry. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the connection structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the Chinese-language Churi wet scrubbing tower of the present invention; Figure 3 This is a schematic diagram of the internal structure of the photocatalytic oxidation reactor in this invention.

[0017] In the diagram: 1. Cyclone dust collector; 2. Venturi wet scrubber; 3. Photocatalytic oxidation reactor; 4. Activated carbon adsorption box; 21. Circulating liquid tank; 22. Venturi tube section; 23. Spray layer; 24. Demisting layer; 221. Contraction section; 222. Throat; 223. Expansion section; 31. Flow equalization pipe; 32. Ultraviolet lamp tube; 33. Metal foam mesh. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0019] Please see Figure 1 - Figure 3 A flue gas treatment device for the production of supercapacitor electrode materials includes a cyclone dust collector 1; a Venturi wet scrubber 2; a photocatalytic oxidation reactor 3; an activated carbon adsorption box 4; and an induced draft fan, with each unit connected in sequence via pipelines.

[0020] The high-temperature, dust-laden flue gas discharged from the supercapacitor electrode material production equipment first enters the cyclone dust collector 1. The inner wall of the cyclone dust collector 1 is lined with a wear-resistant ceramic layer to remove larger dust particles from the flue gas, thus initially purifying the flue gas and reducing the load on subsequent treatment.

[0021] The flue gas, after pre-dust removal, enters the Venturi wet scrubber 2 through a pipeline. The Venturi wet scrubber 2 is made of PPH material and internally consists of, from bottom to top, a circulating liquid tank 21; a Venturi tube section 22; a spray layer 23; and a demister layer 24. The Venturi tube section 22 comprises a contraction section 221, a throat 222, and an expansion section 223, with atomizing nozzles installed at the throat 222. Upon entering the Venturi tube section 22, the flue gas velocity increases, resulting in vigorous mixing with the circulating liquid sprayed from the atomizing nozzles, efficiently capturing fine particulate matter and absorbing acidic gases. The flue gas then enters the spray layer 23, where the circulating liquid sprayed from the spiral nozzles further washes and removes residual pollutants. After washing, the flue gas passes through the demister layer 24 to remove droplets before being discharged. The washing liquid in the circulating liquid tank 21 is pumped to the atomizing nozzles and spiral nozzles, and dust-laden waste liquid is periodically discharged from the bottom drain. The circulating liquid tank 21 is equipped with an online pH monitor and an automatic dosing system, which automatically adds alkali solution according to the pH value to maintain washing efficiency.

[0022] The scrubbed flue gas enters the photocatalytic oxidation reactor 3. A flow equalization pipe 31 is installed at the reactor inlet, and ultraviolet lamps 32 and metal foam mesh 33 loaded with nano-TiO2 are alternately arranged inside. The ultraviolet light excites the TiO2 to generate highly oxidizing free radicals, efficiently decomposing residual volatile organic compounds (VOCs) and malodorous substances in the flue gas into CO2 and H2O.

[0023] The flue gas, after photocatalytic oxidation treatment, enters the activated carbon adsorption box 4, which is equipped with multiple drawer-type activated carbon fiber felt layers to deeply adsorb trace amounts of residual organic matter and ozone, ensuring that the flue gas meets emission standards. Differential pressure gauges are installed at the inlet and outlet of the activated carbon adsorption box 4 to monitor the resistance of the adsorption layer and indicate when to replace the adsorption material.

[0024] Finally, the purified flue gas is discharged into the chimney by an induced draft fan.

[0025] The entire system is automatically controlled by a PLC control system, which monitors the equipment's operating status in real time, enabling unattended automatic operation.

[0026] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flue gas treatment device for the production of supercapacitor electrode materials, characterized in that, It includes a cyclone dust collector (1), a venturi wet scrubber (2), a photocatalytic oxidation reactor (3), and an activated carbon adsorption box (4) connected in sequence by pipes. The air inlet of the cyclone dust collector (1) is connected to the flue gas outlet of the production equipment, and its outlet is connected to the air inlet of the Venturi wet scrubber (2) through a pipeline. The Venturi wet scrubbing tower (2) includes a tower body, which is provided from bottom to top with a circulating liquid tank (21); a Venturi tube section (22); a spray layer (23); and a demisting layer (24). The Venturi tube section (22) consists of a contraction section (221), a throat (222), and an expansion section (223). An atomizing nozzle is provided at the throat (222). The spray layer (23) is provided with multiple spiral nozzles. The bottom of the circulating liquid tank (21) is provided with a drain port, and the side is connected to the atomizing nozzle and the spiral nozzle through a circulating pump. The photocatalytic oxidation reactor (3) is equipped with alternating ultraviolet lamps (32) and metal foam mesh (33) loaded with nano-TiO2 along the airflow direction.

2. The flue gas treatment device for the production of supercapacitor electrode materials according to claim 1, characterized in that, The inner wall of the cyclone dust collector (1) is lined with a wear-resistant ceramic layer.

3. The flue gas treatment device for the production of supercapacitor electrode materials according to claim 1, characterized in that, The Venturi wet scrubbing tower (2) is made of PPH material, and the circulating liquid tank (21) is equipped with an online pH monitor and an automatic dosing system.

4. The flue gas treatment device for the production of supercapacitor electrode materials according to claim 1, characterized in that, The bottom of the air inlet of the photocatalytic oxidation reactor (3) is connected to a flow equalization pipe (31).

5. The flue gas treatment device for the production of supercapacitor electrode materials according to claim 1, characterized in that, Differential pressure gauges are installed at both the inlet and outlet of the activated carbon adsorption box (4).

6. The flue gas treatment device for the production of supercapacitor electrode materials according to claim 1, characterized in that, The activated carbon adsorption box (4) is equipped with a multi-layer drawer-type activated carbon fiber felt layer.

7. The flue gas treatment device for the production of supercapacitor electrode materials according to claim 1, characterized in that, It also includes an induced draft fan, the inlet of which is connected to the outlet of the activated carbon adsorption box (4), and the outlet of which is connected to the chimney.

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