A waste gas treatment device for high-alumina silicon production equipment.

Abstract

This utility model relates to the technical field of hot-dip galvanizing wet finishing systems, and more particularly to a waste gas treatment device for high-aluminum-silicon finishing machines. The inlet of the waste gas purification tower is connected to the outlet of the finishing machine via a pipeline; the outlet of the waste gas purification tower is connected to the inlet of the waste gas fan via a pipeline; the demineralized water inlet of the waste gas purification tower is connected to a circulating pump via a pipeline; the water supply inlet of the waste gas purification tower is connected to the demineralized water tank via a pipeline; and the outlet of the waste gas fan is connected to a mist separator via a chimney. The waste gas fan and the circulating pump are respectively connected to a control unit. The advantages of this utility model are: circulating pump one and circulating pump two are connected in parallel, so if one circulating pump is under maintenance, the other circulating pump operates, ensuring production safety; a solenoid valve one is installed on the pipeline between the waste gas purification tower and the demineralized water tank, and a solenoid valve two is installed on the waste liquid discharge pipeline between the waste gas purification tower and the drainage ditch. Operators can start and stop the operation via an HMI (Human-Machine Interface) screen, making operation simple and easy to implement.

Description

Technical Field

[0001] This utility model relates to the technical field of hot-dip galvanizing wet finishing systems, and in particular to a waste gas treatment device for high-aluminum silicon production finishing machines. Background Technology

[0002] The finishing mill on the No. 3 galvanizing line of a cold rolling mill was designed by VAI CLECIM and put into operation in 2002. The original wet finishing system design did not consider the emission of oil mist from the emulsion and lacked environmental protection measures. Therefore, for many years, the finishing area of ​​the plant was shrouded in oil mist, directly affecting the air quality index and endangering workers' health. In recent years, with the deepening of efforts to reduce air pollutants in the steel industry, equipment that does not meet emission standards must be upgraded, creating an urgent need for flue gas purification devices for finishing mills. Utility Model Content

[0003] The purpose of this invention is to provide a waste gas treatment device for high-aluminum-silicon production equipment, which improves air quality in the factory, protects workers' health, has a short fault diagnosis time, and is easy to maintain.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A waste gas treatment device for high-aluminum-silicon photovoltaic (PV) production equipment includes a waste gas purification tower, a circulating pump, a demineralized water tank, a mist separator, and a waste gas fan. The inlet of the waste gas purification tower is connected to the outlet of the PV equipment via a pipeline, the outlet of the waste gas purification tower is connected to the inlet of the waste gas fan via a pipeline, the demineralized water inlet of the waste gas purification tower is connected to the circulating pump via a pipeline, the water supply inlet of the waste gas purification tower is connected to the demineralized water tank via a pipeline, and the outlet of the waste gas fan is connected to the mist separator via a chimney. The waste gas fan and the circulating pump are respectively connected to a control unit.

[0006] The circulating pump includes circulating pump one and circulating pump two, which are connected in parallel. Circulating pump one and circulating pump two are respectively connected to the control unit.

[0007] The demineralized water inlet of the exhaust gas purification tower is connected to the ground via a waste liquid discharge pipeline; the overflow outlet of the exhaust gas purification tower is connected to the ground via a waste liquid discharge pipeline; the vent outlet of the exhaust gas purification tower is connected to the ground via a waste liquid discharge pipeline; and the chimney is connected to the ground via a waste liquid discharge pipeline.

[0008] A solenoid valve is installed on the pipeline between the water inlet of the exhaust gas purification tower and the demineralized water tank, and a solenoid valve is installed on the waste liquid discharge pipeline between the demineralized water inlet of the exhaust gas purification tower and the ditch. Solenoid valves one and two are respectively connected to the control unit.

[0009] The control unit includes a PLC, a frequency converter for circulating pump one, a frequency converter for circulating pump two, and a frequency converter for exhaust gas fan. The frequency converter for circulating pump one is used to drive the operation of circulating pump one, the frequency converter for circulating pump two is used to drive the operation of circulating pump two, and the frequency converter for exhaust gas fan is used to drive the operation of exhaust gas fan. The frequency converters for circulating pump one, circulating pump two, and exhaust gas fan are all connected to the PLC.

[0010] The PLC includes three communication modules: Module 1, Module 2, and Module 3. Each of the frequency converters for circulating pump 1, circulating pump 2, and exhaust fan is equipped with a communication expansion card. Module 1 is connected to the communication expansion card of the frequency converter for circulating pump 1, Module 2 is connected to the communication expansion card of the frequency converter for circulating pump 2, and Module 3 is connected to the communication expansion card of the frequency converter for exhaust fan.

[0011] The PLC also includes a power supply module, communication module four, communication module five, and a digital output module. The power supply module, communication module four, communication module five, digital output module, communication module one, communication module two, and communication module three are connected through ports. The power supply module is used to provide working power. Communication module four is connected to the touch screen through a port. The digital output modules are connected to solenoid valve one and solenoid valve two through ports respectively. Communication module five is connected to the PLC master station.

[0012] PLC is a substation for the exhaust gas purification tower.

[0013] The exhaust fan is a centrifugal fan.

[0014] The top of the chimney is equipped with a rain cap.

[0015] The exhaust gas purification tower includes a spray device and a packing device, which are arranged sequentially from top to bottom inside the exhaust gas purification tower. The demineralized water tank is connected to the spray device and is used to supply water to the spray device. The spray device is equipped with several nozzles, and the packing device includes multiple packing layers for filtering and purifying the exhaust gas.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The spraying device and the packing device are arranged in sequence from top to bottom inside the exhaust gas purification tower. The top of the exhaust gas purification tower is equipped with an exhaust gas outlet. On one side of the exhaust gas purification tower, from top to bottom, there are a demineralized water inlet and an exhaust gas purification tower inlet. On the other side of the exhaust gas purification tower, from top to bottom, there are a water supply outlet and an overflow outlet, which improves the spraying efficiency and the exhaust gas purification efficiency.

[0018] 2. Circulating pump one and circulating pump two are connected in parallel. If one circulating pump fails or needs maintenance, the other circulating pump can continue to work, ensuring production safety.

[0019] 3. Circulation pump one and circulation pump two are driven by corresponding frequency converters, saving production costs; solenoid valve one is installed on the pipeline between the water inlet of the exhaust gas purification tower and the demineralized water tank, and solenoid valve two is installed on the waste liquid discharge pipeline between the demineralized water inlet of the exhaust gas purification tower and the ditch. Operators can start and stop the corresponding circulation pumps and corresponding solenoid valves through the start and stop buttons on the HMI human-machine interaction screen, which is simple and easy to implement.

[0020] 4. Each frequency converter is connected to the corresponding communication module via a communication expansion card and a cable, which saves on the number of cables between the frequency converter and the PLC of the exhaust gas purification tower substation, and shortens the installation and maintenance time.

[0021] 5. The communication module 4 connects to the HMI human-machine interface screen via a port, allowing maintenance personnel to view the operating status of the frequency converter and solenoid valve at any time through the HMI human-machine interface screen, making maintenance convenient, time-saving and labor-saving. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the exhaust gas treatment device for high-aluminum-silicon production equipment.

[0023] Figure 2 This is a schematic diagram of the frequency converter principle for the exhaust gas fan and circulating pump.

[0024] Figure 3 This is a schematic diagram of the PLC as a substation for the waste gas purification tower.

[0025] In the diagram: 1-Circulation pump one, 2-Circulation pump two, 3-Demineralized water tank, 4-Finishing machine, 5-Droplet separator, 6-Exhaust gas fan, 7-Chimney, 8-Solenoid valve one, 9-Ditch, 10-Exhaust gas purification tower, 11-Solenoid valve two. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0027] The following embodiments are implemented based on the technical solution of this utility model, providing detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments. Unless otherwise specified, the methods used in the following embodiments are conventional methods.

[0028] Example 1

[0029] See Figure 1For the complete machine's 4 exhaust gas treatment system, an additional control cabinet and an operation box were added on-site. The control cabinet contains 10 exhaust gas purification tower substations, and the HMI human-machine interface screen is set on the operation box, which is installed on-site. A waste gas treatment and control device for a high-alumina silicon production finishing machine 4 includes a waste gas purification tower 10, a circulating pump, a demineralized water tank 3, a mist separator 5, and a waste gas fan 6, wherein the waste gas fan 6 is a centrifugal fan. The waste gas purification tower 10 includes a spray device and a packing device, which are arranged sequentially from top to bottom inside the waste gas purification tower 10. The demineralized water tank 3 is connected to the spray device and is used to supply water to the spray device. The spray device is equipped with several nozzles. The packing device includes multiple packing layers for filtering and purifying the waste gas. The top of the waste gas purification tower 10 is equipped with a waste gas outlet. One side of the waste gas purification tower 10 is equipped with a demineralized water inlet and a waste gas purification tower 10 inlet sequentially from top to bottom. The other side of the waste gas purification tower 10 is equipped with a water supply inlet and an overflow outlet sequentially from top to bottom. The inlet of the waste gas purification tower 10 and the outlet of the finishing machine 4 are connected by a pipeline. The outlet of the exhaust gas purification tower 10 is connected to the inlet of the exhaust gas fan 6 via a pipeline. The demineralized water inlet of the exhaust gas purification tower 10 is connected to the circulating pump via a pipeline. The water supply inlet of the exhaust gas purification tower 10 is connected to the demineralized water tank 3 via a pipeline. The outlet of the exhaust gas fan 6 is connected to the mist separator 5 via a chimney 7, and the top of the chimney 7 is equipped with a rainproof cap. The circulating pump consists of circulating pump 1 and circulating pump 2 connected in parallel. The demineralized water inlet of the exhaust gas purification tower 10 is connected to the ditch 9 via a waste liquid discharge pipeline. The overflow outlet of the exhaust gas purification tower 10 is connected to the ditch 9 via a waste liquid discharge pipeline. The vent outlet of the exhaust gas purification tower 10 is connected to the ditch 9 via a waste liquid discharge pipeline. The chimney 7 is connected to the ditch 9 via a waste liquid discharge pipeline. A solenoid valve 8 is installed on the pipeline between the water supply inlet of the exhaust gas purification tower 10 and the demineralized water tank 3. A solenoid valve 11 is installed on the waste liquid discharge pipeline between the demineralized water inlet of the exhaust gas purification tower 10 and the ditch 9.

[0030] See Figure 2 ,See Figure 3The control unit includes a PLC, frequency converters for circulating pump 1 and 2, and frequency converters for exhaust fan 6. The PLC is for the 10th substation of the exhaust gas purification tower. The frequency converter for circulating pump 1 drives circulating pump 1, the frequency converter for circulating pump 2 drives circulating pump 2, and the frequency converter for exhaust fan 6 drives exhaust fan 6. The frequency converters for circulating pump 1, 2, and 6 are connected to the PLC. The PLC includes communication module 1, communication module 2, communication module 3, power supply module, communication module 4, communication module 5, and digital output module. The power supply module, communication module 4, communication module 5, digital output module, communication module 1, communication module 2, and communication module 3 are connected via ports. The power supply module provides operating power, the communication module four connects to the touch screen via a port, and the digital output modules connect to solenoid valve 8 and solenoid valve 11 via ports respectively. The communication module five connects to the PLC master station, allowing operators to control the waste gas purification tower 10 through the PLC master station's HMI human-machine interface and observe the equipment's operating status at any time, facilitating unified management throughout the entire process. The frequency converters of circulating pump 1, circulating pump 2, and waste gas fan 6 are each equipped with communication expansion cards. The communication module one connects to the communication expansion card of the circulating pump 1 frequency converter, the communication module two connects to the communication expansion card of the circulating pump 2 frequency converter, and the communication module three connects to the communication expansion card of the waste gas fan 6 frequency converter.

[0031] Work process

[0032] Operators can start and stop circulating pump 1 and circulating pump 2 using the start / stop buttons on the HMI (Human Machine Interface) screen. Depending on production conditions, circulating pump 1 and circulating pump 2 can operate in pairs, with one in standby and the other on standby, or they can operate together. Operators can also start and stop solenoid valve 8 using the start / stop buttons on the HMI screen to replenish water to the waste gas purification tower 10. Operators can also start and stop solenoid valve 11 using the start / stop buttons on the HMI screen to discharge wastewater into the ditch. The operation is simple, intuitive, and easy to maintain.

[0033] This utility model's spraying device and packing device are arranged sequentially from top to bottom inside the waste gas purification tower. The top of the waste gas purification tower has a waste gas outlet. One side of the waste gas purification tower, from top to bottom, has a demineralized water inlet and a waste gas purification tower inlet. The other side of the waste gas purification tower, from top to bottom, has a water inlet and an overflow outlet, improving spraying efficiency and waste gas purification efficiency. Circulating pump one and circulating pump two are connected in parallel. If one circulating pump fails or is under maintenance, the other circulating pump can continue to operate, ensuring production safety. Circulating pump one and circulating pump two are driven by corresponding frequency converters, saving production costs. The water inlet of the waste gas purification tower is connected to the demineralized water inlet and the overflow outlet. Solenoid valve one is installed on the pipeline between the brine tanks, and solenoid valve two is installed on the waste liquid discharge pipeline between the demineralized water inlet of the exhaust gas purification tower and the ditch. Operators can start and stop the corresponding circulating pumps and solenoid valves through the start / stop buttons on the HMI human-machine interface, which is simple and easy to implement. Each frequency converter is connected to the corresponding communication module through a communication expansion card via cable, which saves the number of cables between the frequency converter and the PLC of the exhaust gas purification tower substation, and shortens the installation and maintenance time. Communication module four is connected to the HMI human-machine interface through a port, and maintenance personnel can check the operating status of the frequency converter and solenoid valves at any time through the HMI human-machine interface, which is convenient, time-saving and labor-saving for maintenance.

Claims

1. A finishing machine exhaust gas treatment device for high alumina silica production, characterized by, It includes an exhaust gas purification tower, a circulating pump, a demineralized water tank, a mist separator, and an exhaust gas fan. The inlet of the exhaust gas purification tower is connected to the outlet of the sprue through a pipeline. The outlet of the exhaust gas purification tower is connected to the inlet of the exhaust gas fan through a pipeline. The demineralized water inlet of the exhaust gas purification tower is connected to the circulating pump through a pipeline. The water supply port of the exhaust gas purification tower is connected to the demineralized water tank through a pipeline. The outlet of the exhaust gas fan is connected to the mist separator through a chimney. The exhaust gas fan and the circulating pump are respectively connected to the control unit.

2. The waste gas treatment device for a sizing machine for high-aluminum silicon production according to claim 1, characterized in that, The circulating pump includes circulating pump one and circulating pump two, which are connected in parallel. Circulating pump one and circulating pump two are respectively connected to the control unit.

3. The exhaust gas treatment device for high-alumina silicon production equipment according to claim 1, characterized in that, The demineralized water inlet of the exhaust gas purification tower is connected to the ground via a waste liquid discharge pipeline; the overflow outlet of the exhaust gas purification tower is connected to the ground via a waste liquid discharge pipeline; the vent outlet of the exhaust gas purification tower is connected to the ground via a waste liquid discharge pipeline; and the chimney is connected to the ground via a waste liquid discharge pipeline. A solenoid valve is installed on the pipeline between the water inlet of the exhaust gas purification tower and the demineralized water tank, and a solenoid valve is installed on the waste liquid discharge pipeline between the demineralized water inlet of the exhaust gas purification tower and the ditch. Solenoid valves one and two are respectively connected to the control unit.

4. The exhaust gas treatment device for high-alumina silicon production equipment according to claim 2, characterized in that, The control unit includes a PLC, a frequency converter for circulating pump one, a frequency converter for circulating pump two, and a frequency converter for exhaust gas fan. The frequency converter for circulating pump one is used to drive the operation of circulating pump one, the frequency converter for circulating pump two is used to drive the operation of circulating pump two, and the frequency converter for exhaust gas fan is used to drive the operation of exhaust gas fan. The frequency converters for circulating pump one, circulating pump two, and exhaust gas fan are respectively connected to the PLC.

5. The exhaust gas treatment device for high-alumina silicon production equipment according to claim 4, characterized in that, The PLC includes communication module one, communication module two, and communication module three. The frequency converters of circulating pump one, circulating pump two, and exhaust fan are each equipped with a communication expansion card. Communication module one is connected to the communication expansion card of the frequency converter of circulating pump one, communication module two is connected to the communication expansion card of the frequency converter of circulating pump two, and communication module three is connected to the communication expansion card of the frequency converter of exhaust fan.

6. The exhaust gas treatment device for high-alumina silicon production equipment according to claim 5, characterized in that, The PLC also includes a power supply module, communication module four, communication module five, and a digital output module. The power supply module, communication module four, communication module five, digital output module, communication module one, communication module two, and communication module three are connected through ports. The power supply module is used to provide working power. Communication module four is connected to the touch screen through a port. The digital output modules are connected to solenoid valve one and solenoid valve two through ports respectively. Communication module five is connected to the PLC master station.

7. The exhaust gas treatment device for high-alumina silicon production equipment according to claim 6, characterized in that, The PLC mentioned is a waste gas purification tower substation.

8. The exhaust gas treatment device for high-alumina silicon production equipment according to claim 1, characterized in that, The exhaust fan is a centrifugal fan.

9. The exhaust gas treatment device for high-alumina silicon production equipment according to claim 1, characterized in that, The top of the chimney is equipped with a rain cap.

10. The exhaust gas treatment device for high-alumina silicon production equipment according to claim 1, characterized in that, The exhaust gas purification tower includes a spray device and a packing device, which are arranged sequentially from top to bottom inside the exhaust gas purification tower. A demineralized water tank is connected to the spray device and is used to supply water to the spray device. The spray device is equipped with several nozzles, and the packing device includes multiple packing layers for filtering and purifying the exhaust gas.

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