A device for inhibiting boiler ash deposition of copper smelting flue gas quenching and conditioning

Abstract

The present application belongs to the technical field of chemical treatment of flue gas, and in particular to a copper smelting flue gas quenching and conditioning device for inhibiting boiler ash deposition. The present application is proposed in view of the problem that current flue gas treatment devices cannot intelligently assist operators in regulation and control during treatment. The present application includes a flue gas treatment tank, which includes a main tank body, an air inlet assembly installed at the bottom of the circumferential side wall of the main tank body, an air outlet assembly installed at the top of the main tank body, a monitoring assembly arranged at the top position in the main tank body, and a quenching assembly arranged at the bottom of the main tank body. The data processing module in the processor intelligently analyzes and processes the data of the sensor, determines the operation of the entire device, and assists the operator through the indicator light. The adjustment of the filter core and the addition of the catalyst during the flue gas treatment process can be accurately controlled, the use of the catalyst and the service life control of the filter core are optimized, and the effect of reducing cost and increasing efficiency is achieved.

Description

Technical Field

[0001] This invention relates to the field of chemical treatment technology for flue gas, and more particularly to a rapid cooling and conditioning device for copper smelting flue gas used to suppress boiler ash buildup. Background Technology

[0002] During the copper pyrometallurgical process, the high-temperature flue gas produced contains a large amount of dust, volatile metal compounds, and sulfides. When this flue gas is introduced into the boiler to recover waste heat, it is very easy for ash to form. The ash material follows the formation path of "volatilization-migration-encapsulation-sulfidation". After the metals and compounds volatilize at high temperatures, they condense and accumulate in the low-temperature section of the boiler, combining with dust particles to form a hard scale with copper-iron composite oxides as the skeleton and silicates as the binder phase. This not only reduces the boiler heat exchange efficiency and increases energy consumption, but also easily causes flue blockage and equipment corrosion, forcing production to be interrupted for maintenance, which seriously affects the continuous and stable operation of the smelting system.

[0003] For example, Chinese patent document CN113713751A includes a packed tower shell, with an upper packing zone and a lower packing zone inside the shell, both filled with structured packing. The structured packing is fixed by a support grid and a pressure ring. Multiple protrusions are arranged on the support grid, located inside the structured packing. A liquid collector is located below the support grid in the upper packing zone. The liquid collector is fitted to the inner wall of the packed tower shell, and its periphery is mounted on the inner wall. The liquid collector has spaced-apart outlets, with guide sections on both sides of the outlets. The above-disclosed technology has the following problems: In the process of treating boiler flue gas, current flue gas treatment equipment cannot intelligently control and assist operators in achieving the optimal concentration of flue gas and the diameter of particulate matter. Existing technologies do not easily solve this problem. Therefore, a copper smelting flue gas quenching and conditioning device for suppressing boiler ash formation is urgently needed to solve the above problems. Summary of the Invention

[0004] Based on the technical problem that current flue gas treatment devices cannot intelligently assist operators in controlling the process, this invention proposes a copper smelting flue gas rapid cooling and conditioning device for suppressing boiler ash buildup.

[0005] The present invention proposes a copper smelting flue gas rapid cooling and conditioning device for suppressing boiler ash formation, comprising a flue gas treatment tank, wherein the flue gas treatment tank includes a main tank body, an air inlet component installed at the bottom of the circumferential side wall of the main tank body, an exhaust component installed at the top of the main tank body, a monitoring component installed at the top of the main tank body, a rapid cooling component installed at the bottom of the main tank body, and a control box installed on the outer wall of the main tank body, wherein a processor and indicator lights are installed inside the control box.

[0006] Monitoring components include a monitoring housing fixed at the top of the inner wall of the main tank, a gas-guiding rubber cover at the bottom of the monitoring housing, and a particle concentration detection component and a particle diameter detection component installed inside the monitoring housing.

[0007] Quenching assembly: includes a quenching air duct installed in the middle of the main tank. The bottom of the quenching air duct is connected to the air inlet assembly. The top of the quenching air duct is equipped with exhaust branch pipes arranged in a circumferential array. Spray nozzles are installed inside the quenching air duct.

[0008] Preferably, a tank support column is installed at the bottom of the main tank.

[0009] Preferably, the bottom of the main tank is provided with a through hole, and the main tank is provided with an air inlet pipe at the bottom of the through hole.

[0010] Preferably, the air intake assembly includes an outer air intake pipe and an inner air intake pipe, with the inner air intake pipe being inserted into the bottom of the quench air duct.

[0011] Preferably, the exhaust assembly includes an outer exhaust pipe and an inner exhaust pipe, with the bottom of the inner exhaust pipe being sealed and inserted into the top of the monitoring assembly.

[0012] Preferably, the processor includes a particle concentration detection module, a particle diameter detection module, and a data processing module.

[0013] Preferably, the particle concentration detection component includes a laser sensor transmitter mounting bracket and a laser sensor receiver mounting bracket, which are respectively fixed to the inner walls of both sides of the monitoring chassis. The laser sensor transmitter mounting bracket is equipped with an array of laser sensor transmitters, and the laser sensor receiver mounting bracket is equipped with a laser sensor receiver.

[0014] Particle concentration detection module: Used to detect the detection data between the laser sensor transmitter and the laser sensor receiver, analyze and process the detection data, generate a particle concentration change coefficient, and transmit the particle concentration change coefficient to the data processing module in the processor.

[0015] Preferably, the particle diameter detection component includes a detection housing fixed to the inner wall of a monitoring housing, a membrane plate fixed to the bottom of the detection housing, an array of partitions installed on the top inner wall of the detection housing, and an ultrasonic sensor fixed to the top inner wall of the detection housing at the middle position between two adjacent partitions.

[0016] Particle diameter detection module: used to detect the sound generated by the collision and contact between particulate matter in flue gas and the membrane plate, analyze and process the detected data to generate a particle diameter change coefficient, and transmit the particle diameter change coefficient to the data processing module in the processor.

[0017] Preferably, the data processing module is used to collect the particle concentration change coefficient and particle diameter change coefficient fed back by the particle concentration detection module and the particle diameter change coefficient fed back by the particle diameter detection module, and analyze and process the collected particle concentration change coefficient and particle diameter change coefficient to generate a judgment coefficient, which is used by the data processing module to make a decision and control the status of the indicator light.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This copper smelting flue gas rapid cooling and conditioning device, used to suppress boiler ash buildup, intelligently analyzes and processes sensor data through the data processing module in the processor, judges the operation of the entire device, and assists operators with operation through indicator lights. It can precisely control the adjustment of filter elements and the addition of catalysts during flue gas treatment, optimize the use of catalysts and the life control of filter elements, and play a role in reducing costs and increasing efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup, as proposed in this invention.

[0021] Figure 2 This is a partial cross-sectional view of the overall structure of a copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup, as proposed in this invention.

[0022] Figure 3 This is a schematic diagram of the internal structure of the monitoring box of a copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup, as proposed in this invention.

[0023] Figure 4 This is a schematic diagram of the particle diameter detection component of a copper smelting flue gas quenching and conditioning device for suppressing boiler ash formation, as proposed in this invention.

[0024] Figure 5 This is a schematic diagram illustrating the control principle of a copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup, as proposed in this invention.

[0025] In the picture:

[0026] 100. Flue gas treatment tank; 101. Main tank body; 102. Tank body support column; 103. Inlet bottom pipe;

[0027] 200. Intake assembly; 201a. Intake outer pipe; 201b. Intake inner pipe; 202. Intake pipe flange;

[0028] 300. Exhaust assembly; 301a. Exhaust outer pipe; 301b. Exhaust inner pipe; 302. Exhaust pipe mounting flange; 303. Exhaust flange;

[0029] 400. Quenching assembly; 401. Quenching vent pipe; 402. Fixing plate; 403. Exhaust branch pipe; 404. Quenching chamber;

[0030] 500. Monitoring components; 501. Monitoring chassis; 502. Air guide rubber cover; 503. Top exhaust connection pipe;

[0031] 600. Particle concentration detection component; 601a. ​​Laser sensor transmitter mounting bracket; 601b. Laser sensor receiver mounting bracket; 602. Laser sensor transmitter; 603. Laser sensor receiver;

[0032] 700. Particle diameter detection component; 701. Detection chassis; 702. Membrane plate; 703. Partition plate; 704. Ultrasonic sensor. Detailed Implementation

[0033] Reference Figures 1-5 A copper smelting flue gas rapid cooling and conditioning device for suppressing boiler ash buildup includes a flue gas treatment tank 100. The flue gas treatment tank 100 includes a main tank body 101. An air inlet assembly 200 is installed at the bottom of the circumferential side wall of the main tank body 101. An exhaust assembly 300 is installed at the top of the main tank body 101. A monitoring assembly 500 is installed at the top of the main tank body 101. A rapid cooling assembly 400 is installed at the bottom of the main tank body 101. A control box is installed on the outer wall of the main tank body 101. The control box contains a processor and indicator lights. The indicator lights are set to two states: red and green. When the data processing module's processing signal acts on the indicator lights, it is used to prompt the operator to adjust the equipment.

[0034] Reference Figures 2-4 The monitoring component 500 includes a monitoring housing 501 fixed at the top of the inner wall of the main tank 101. A gas guide rubber cover 502 is provided at the bottom of the monitoring housing 501. The bottom circumference of the gas guide rubber cover 502 is sealed to the inner wall of the main tank 101. The flue gas after rapid cooling and conditioning at the bottom diffuses to the top and enters the gas guide rubber cover 502. It then enters the exhaust component 300 through the top of the monitoring housing 501 and is discharged to the outside. The monitoring housing 501 is equipped with a particle concentration detection component 600 and a particle diameter detection component 700.

[0035] Reference Figure 2The quench assembly 400 includes a quench air duct 401 installed in the middle of the main tank 101. The bottom of the quench air duct 401 is connected to the air intake assembly 200. The top of the quench air duct 401 is provided with an exhaust branch pipe 403 arranged in a circumferential array. The exhaust branch pipe 403 is arranged in a circumferential array and is divided into three layers. The bottom of the exhaust branch pipe 403 is inserted into the interior of the quench air duct 401 and is connected to the interior of the quench air duct 401. The flue gas flowing in the quench air duct 401 is discharged through the top of the exhaust branch pipe 403. The length of the exhaust branch pipe 403 in the three layers gradually increases, so that the outlet positions of the exhaust branch pipe 403 in the upper and lower positions are staggered, effectively avoiding exhaust blockage of the exhaust branch pipe 403 located at the bottom.

[0036] Reference Figure 2 A fixing plate 402 is installed in the middle of the quenching duct 401. The circumference of the fixing plate 402 is fixed to the inner wall of the main tank 101, and the welding position between the circumference of the fixing plate 402 and the main tank 101 is sealed. A quenching chamber 404 with a sealed structure is formed between the bottom of the fixing plate 402 and the main tank 101. Two pipe openings are provided on the outer wall of the quenching chamber 404, and two circulation pumps are connected to the two pipe openings. The cold chamber 404 is filled with coolant for rapid cooling. During operation, a circulation pump circulates the coolant to rapidly cool the flue gas in the rapid cooling duct 401. Spray nozzles are installed inside the rapid cooling duct 401. Multiple spray nozzles are installed inside the rapid cooling duct 401, and the spray direction of the spray nozzles is facing the bottom. The spray nozzles are connected to a conditioning catalyst tank to fully mix the conditioning catalyst spray with the flue gas to condition the flue gas.

[0037] Reference Figure 1 , Figure 2 Tank support columns 102 are installed at the bottom of the main tank 101. There are three tank support columns 102, which are arranged in a circular array around the circumference of the main tank 101 and are all fixed to the outer wall of the main tank 101 by bolts.

[0038] Reference Figure 2 The bottom of the main tank 101 is provided with a through hole, and an air inlet pipe 103 is provided at the bottom of the through hole. The welding position between the air inlet pipe 103 and the main tank 101 is sealed. A fan is installed at the bottom of the main tank 101. The exhaust end of the fan is connected to the air inlet pipe 103. The air outlet of the fan is directed towards the air inlet pipe 103 at the top. When the fan is working, the air outlet of the fan towards the top draws the flue gas from the side air intake assembly 200 into the interior of the quenching air duct 401.

[0039] Reference Figure 2Furthermore, the intake assembly 200 includes an outer intake pipe 201a and an inner intake pipe 201b. The inner intake pipe 201b is inserted into the bottom of the quenching duct 401. The outer intake pipe 201a and the inner intake pipe 201b are designed as an integral structure. The inner intake pipe 201b is located in the quenching chamber 404, where the flue gas can be quenched in advance. The end of the outer intake pipe 201a is provided with an intake pipe flange 202 for connecting to the flue gas discharge pipe.

[0040] Reference Figure 2 Furthermore, the exhaust assembly 300 includes an outer exhaust pipe 301a and an inner exhaust pipe 301b. The bottom of the inner exhaust pipe 301b is sealed and inserted into the top of the monitoring assembly 500. The outer exhaust pipe 301a and the inner exhaust pipe 301b form the entire pipe structure. An exhaust pipe mounting flange 302 is provided at the connection between the inner exhaust pipe 301b and the main tank 101. The exhaust pipe mounting flange 302 fixes the entire exhaust assembly 300 to the top of the main tank 101 with bolts. An exhaust flange 303 is provided at the end of the outer exhaust pipe 301a. The exhaust flange 303 is connected to the exhaust pipe after flue gas treatment with bolts.

[0041] Furthermore, the processor is equipped with a particle concentration detection module, a particle diameter detection module, and a data processing module.

[0042] Reference Figure 3 Furthermore, the particle concentration detection component 600 includes a laser sensor transmitter mounting bracket 601a and a laser sensor receiver mounting bracket 601b respectively fixed to the inner walls of both sides of the monitoring housing 501. The laser sensor transmitter mounting bracket 601a is equipped with an array of laser sensor transmitters 602, and the laser sensor receiver mounting bracket 601b is equipped with a laser sensor receiver 603. Multiple sets of laser sensor transmitters 602 and laser sensor receivers 603 are provided, which can better detect the particle concentration of the processed flue gas. The detection data of multiple sets of laser sensor transmitters 602 and laser sensor receivers 603 are transmitted to the particle concentration detection module to comprehensively determine the particle concentration change coefficient C of the current flue gas.

[0043] Particle concentration detection module: used to detect the detection data between laser sensor transmitter 602 and laser sensor receiver 603, analyze and process the detection data, generate particle concentration change coefficient C, and transmit particle concentration change coefficient C to the data processing module in the processor. The logic for obtaining particle concentration change coefficient C is as follows.

[0044]

[0045] in:

[0046] C: Coefficient of change in particle concentration;

[0047] : The average detection value of each group of laser sensor transmitters and laser sensor receivers;

[0048] : Baseline concentration, concentration values ​​of the laser sensor transmitter and laser sensor receiver when there is no smoke.

[0049] Reference Figure 3 , Figure 4 Furthermore, the particle diameter detection component 700 includes a detection housing 701 fixed to the inner wall of a monitoring housing 501. A diaphragm plate 702 is fixed to the bottom of the detection housing 701. An array of partitions 703 are installed on the top inner wall of the detection housing 701. An ultrasonic sensor 704 is fixed to the top inner wall of the detection housing 701 at the middle position between two adjacent partitions 703. Multiple sets of ultrasonic sensors 704 are provided and installed inside the detection housing 701. Each ultrasonic sensor 704 is separated by the partitions 703 to form an independent detection area. Each ultrasonic sensor 704 is responsible for detecting the diaphragm plate 702 in its area. Because the particle diameter is different and the sound waves generated by the collision between the diaphragm plates 702 are different, the detected sound data are different, resulting in a particle diameter variation coefficient D.

[0050] Particle diameter detection module: used to detect the sound generated by the collision and contact between particulate matter in flue gas and membrane plate 702, and analyze and process the detected data to generate particle diameter change coefficient D, and transmit particle diameter change coefficient D to the data processing module in the processor. The logic for obtaining particle diameter change coefficient D is as follows.

[0051]

[0052] in:

[0053] D: Particle diameter variation coefficient;

[0054] : The average detection value of each group of ultrasonic sensors;

[0055] : Baseline value, the value of particulate matter diameter in flue gas that meets emission standards as determined by the ultrasonic sensor.

[0056] Furthermore, the data processing module is used to collect the particle concentration change coefficient C fed back by the particle concentration detection module and the particle diameter change coefficient D fed back by the particle diameter detection module. It analyzes and processes the collected particle concentration change coefficient C and particle diameter change coefficient D to generate a judgment coefficient K, which is used by the data processing module to make decisions and control the status of the indicator lights.

[0057] = × + ×D

[0058] in:

[0059] C: Coefficient of change in particle concentration;

[0060] Weighting coefficient for particle concentration variation coefficient;

[0061] D: Particle diameter variation coefficient;

[0062] : Weighting coefficient of particle diameter variation coefficient.

[0063] The data processing module compares the obtained determination coefficient K with the preset threshold coefficient. Comparison, It is a preset value, and the data processing module determines the state of the indicator light by comparison.

[0064] Indicator light =

[0065] In practical applications, weight and The selection of weights should be based on specific application scenarios and requirements, ensuring that they accurately reflect their relative importance in that scenario. Furthermore, the sum of these two weights equals 1, indicating that they together constitute the total weight of the entire weighted sum.

[0066] During the operation of this device, it is a dynamic monitoring and adjustment process. The operator controls the treatment of the incoming flue gas through the indicator lights, adjusts the filtration intensity of the filter element and the spraying of the conditioning catalyst. The processor dynamically monitors and adjusts the indicator light from red to green, which indicates that the flue gas rapid cooling and conditioning working position of the device is in a suitable and efficient working state, preventing excessive spraying of the catalyst and achieving a good effect of cost reduction and efficiency improvement.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup, comprising a flue gas treatment tank (100), characterized in that, The flue gas treatment tank (100) includes a main tank body (101), an air intake assembly (200) is installed at the bottom of the circumferential side wall of the main tank body (101), an exhaust assembly (300) is installed at the top of the main tank body (101), a monitoring assembly (500) is installed at the top of the main tank body (101), a quenching assembly (400) is installed at the bottom of the main tank body (101), and a control box is installed on the outer wall of the main tank body (101). The control box contains a processor and indicator lights. The processor contains a particle concentration detection module, a particle diameter detection module and a data processing module. Monitoring component (500): includes a monitoring housing (501) fixed at the top of the inner wall of the main tank (101), a gas guide rubber cover (502) is provided at the bottom of the monitoring housing (501), the bottom circumference of the gas guide rubber cover (502) is sealed to the inner wall of the main tank (101), and a particle concentration detection component (600) and a particle diameter detection component (700) are provided inside the monitoring housing (501). The quenching assembly (400) includes a quenching air duct (401) installed in the middle of the main tank (101). The bottom of the quenching air duct (401) is connected to the air intake assembly (200). The top of the quenching air duct (401) is provided with exhaust branch pipes (403) arranged in a circumferential array. The interior of the quenching air duct (401) is equipped with spray nozzles. Particle concentration detection component (600): includes a laser sensor transmitter mounting bracket (601a) and a laser sensor receiver mounting bracket (601b) respectively fixed on the inner walls of both sides of the monitoring housing (501). The laser sensor transmitter mounting bracket (601a) is equipped with an array of laser sensor transmitters (602), and the laser sensor receiver mounting bracket (601b) is equipped with a laser sensor receiver (603). The particle diameter detection component (700) includes a detection housing (701) fixed to the inner wall of a monitoring housing (501), a membrane plate (702) fixed to the bottom of the detection housing (701), an array of partitions (703) installed on the top inner wall of the detection housing (701), and an ultrasonic sensor (704) fixed to the top inner wall of the detection housing (701) at the middle position between two adjacent partitions (703). The particle concentration detection module and the particle diameter detection module generate the particle concentration change coefficient C and the particle diameter change coefficient D, respectively. The logic for obtaining the particle concentration change coefficient C is as follows: C = ( -C base ) / C base ,in C represents the average detection value of each group of laser sensor transmitters and laser sensor receivers; base The reference concentration is the concentration value when there is no smoke at the laser sensor transmitter and laser sensor receiver; the logic for obtaining the particle diameter variation coefficient D is as follows: D = ( -D base ) / D base ,in D represents the average detection value of each group of ultrasonic sensors; base The baseline value is the value at which the ultrasonic sensor detects particulate matter diameter in the flue gas reaches the emission standard. The particulate concentration detection module transmits the particulate concentration change coefficient C to the data processing module in the processor, and the particulate diameter detection module transmits the particulate diameter change coefficient D to the data processing module in the processor. The data processing module generates a decision coefficient K, which is used by the data processing module to make a decision and control the status of the indicator light. K=W C ×C+W D ×D; where W C W is the weighting coefficient for the particle concentration change coefficient. D W is the weighting coefficient for the particle diameter variation coefficient. C W D The selection of these weights is based on specific application scenarios and requirements, ensuring that they accurately reflect their relative importance in that scenario. At the same time, the sum of these two weights equals 1. Operators control the treatment of the incoming flue gas and adjust the spraying of the conditioning catalyst through the indicator lights.

2. A copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup according to claim 1, characterized in that, The bottom of the main tank (101) is equipped with a tank support column (102).

3. A copper smelting flue gas rapid cooling and conditioning device for suppressing boiler ash buildup according to claim 2, characterized in that, The bottom of the main tank (101) is provided with a through hole, and the main tank (101) is provided with an air inlet pipe (103) at the bottom of the through hole.

4. A copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup according to claim 1, characterized in that, The intake assembly (200) includes an outer intake pipe (201a) and an inner intake pipe (201b), the inner intake pipe (201b) being inserted into the bottom of the quench air duct (401).

5. A copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup according to claim 1, characterized in that, The exhaust assembly (300) includes an outer exhaust pipe (301a) and an inner exhaust pipe (301b), with the bottom of the inner exhaust pipe (301b) being sealed and inserted into the top of the monitoring assembly (500).

6. A copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup according to claim 1, characterized in that, Particle concentration detection module: used to detect the detection data between the laser sensor transmitter (602) and the laser sensor receiver (603), analyze and process the detection data, generate the particle concentration change coefficient, and transmit the particle concentration change coefficient to the data processing module in the processor.

7. A copper smelting flue gas quenching and conditioning device for suppressing boiler ash buildup according to claim 6, characterized in that, Particle diameter detection module: used to detect the sound generated by the collision and contact between particulate matter in flue gas and membrane plate (702), and to analyze and process the detected data to generate particle diameter change coefficient, and transmit the particle diameter change coefficient to the data processing module in the processor.

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