Industrial flue gas purification treatment equipment

Abstract

The utility model discloses industrial flue gas purification treatment equipment which comprises a shell, a gas inlet is formed in the lower end of the shell, a gas outlet is formed in the upper end of the shell, a vertically-arranged packed tower is arranged in the shell and is of a double-layer gas filtering sleeve type structure, a packing area is arranged between double layers of gas filtering sleeves, and a gas flow cavity is formed in the inner layer of gas filtering sleeve. A feeding device is arranged above the shell and is connected with the upper ends of the packed towers, a discharging device is arranged below the shell and is connected with the lower ends of the packed towers, the packed towers are horizontally arranged at intervals, and horizontal fixed partition plates are arranged between the outer sides of the packed towers and the inner wall of the shell. According to the utility model, the treatment efficiency can be improved under the condition that better integrity and trafficability of the filler are ensured, and meanwhile, the content and the concentration of pollutants can be adjusted in a targeted manner, so that a better qualified treatment effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial flue gas purification and treatment, in particular to industrial flue gas purification and treatment equipment. Background Art

[0002] Industrial flue gases, such as coal-fired flue gas and blast furnace gas, often contain trace amounts of pollutants (such as arsenic, selenium, and lead) and minor amounts (such as sulfur dioxide and nitrogen oxides), which can pose serious risks to the surrounding environment and human health. To address this issue, industrial flue gas must be treated and purified before being released into the atmosphere to ensure that all pollutant indicators meet national emission standards.

[0003] Most existing industrial flue gas purification processes utilize a fixed-bed flow-through purification method. This involves placing the purification filler directly onto a permeable fixed bed, then controlling the flue gas to be purified through an adsorption reaction with the filler. This fixed-bed purification method suffers from inconvenient filler replacement and low filler utilization. Furthermore, because flue gas composition, concentration, and air velocity typically vary with industrial process raw materials and load, existing fixed-bed industrial flue gas purification towers struggle to meet flexible adjustment requirements. Changes in flue gas parameters can lead to significant increases in unit purification costs and low purification material utilization, making it difficult to meet the actual needs of cost control and efficiency improvement.

[0004] The applicant has previously applied for and later disclosed a patent, entitled "A Mobile Blast Furnace Gas Desulfurization Equipment and Fine Desulfurization System", with application number 2024213763880. The patent discloses a mobile blast furnace gas desulfurization equipment, including a vertically arranged shell as a whole, a packing flow channel arranged vertically inside the shell, a feeding device provided at the upper end of the shell and connected to the upper end of the packing flow channel, a discharging device provided at the lower end of the shell and connected to the lower end of the packing flow channel, a gas flow channel is also provided inside the shell, an air inlet interface provided at the lower end of the shell and connected to the gas flow channel, and an air outlet interface provided at the upper end of the shell and connected to the gas flow channel, characterized in that the gas flow channel as a whole is zigzag upward and repeatedly passes through the packing flow channel horizontally. The device can realize mobile dynamic contact treatment of gas and filler, can realize online replacement of filler, and has the advantages of high desulfurization treatment efficiency, high filler utilization, more convenient control of the reaction process, better safety, etc.

[0005] However, the above-mentioned equipment still has the following drawbacks: 1. The limited contact area between the packing and the gas being treated, and the short contact time, lead to low treatment efficiency. To improve treatment efficiency, the height or thickness of the packing flow channel needs to be increased. However, increasing the packing height can easily crush the packing at the bottom, while increasing the packing thickness can reduce gas flow. 2. The equipment is difficult to adapt to changes in the concentration of pollutants in the incoming air, resulting in limited flexibility. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the existing technology, the technical problem to be solved by the present invention is: how to provide an industrial flue gas purification treatment equipment that can improve the treatment efficiency without increasing the packing pressure, and enable it to further achieve corresponding adjustments according to the intake pollutant concentration to improve the treatment effect.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] An industrial flue gas purification and treatment equipment includes a shell, an air inlet is provided at the lower end of the shell, an air outlet is provided at the upper end, a vertically arranged packing tower is provided inside the shell, the packing tower is a double-layer air filter sleeve structure, the double-layer air filter sleeves are between the packing areas, the inner layer of the air filter sleeve is an air flow chamber, a feeding device is provided above the shell and connected to the upper end of the packing tower, and a discharging device is provided below the shell and connected to the lower end of the packing tower. It is characterized in that the packing towers are arranged in a horizontal manner at intervals, and a horizontal fixed partition is provided between the outer side of the packing tower and the inner wall of the shell.

[0009] In this way, when the equipment is in use, the packing enters the packing tower from the feeding device. After the flue gas to be treated enters the inner cavity of the shell from the air inlet, it is blocked by the fixed partition and forced into the air flow chamber inside the packing tower. It then passes through the packing tower above the fixed partition and is discharged from the air outlet. The flue gas passes through the packing area in the packing tower in a zigzag manner and contacts and reacts with the packing to achieve treatment, resulting in a better reaction treatment effect. At the same time, the design of multiple packing towers for parallel treatment greatly increases the contact area between the flue gas and the packing, thereby reducing the height of the packing tower and preventing the packing below from being easily crushed due to excessive height. The increased contact area also allows the packing area to be thinner, avoiding the impact of thick thickness on gas permeability. Therefore, it can improve treatment efficiency while ensuring better integrity and permeability of the packing.

[0010] Furthermore, the feeding device includes a feeding container, a feeding hopper is connected to the upper end of the feeding container, a feeding pipe is provided at the lower end, passing downward through the outer shell and communicating with the upper end of the packing tower, an upper feeding sealing valve is provided between the feeding container and the feeding hopper, and a lower feeding sealing valve is provided on the feeding pipe between the feeding container and the packing tower.

[0011] In this way, after feeding from the feed hopper, the material is first stored in the feed container, which facilitates the control of continuous feeding into the packed tower and realizes the mobile reaction control of the filler. Sealing valves are set at the upper and lower ends of the feed container to avoid gas leakage from the bottom when feeding from the feed hopper, thereby improving the feeding safety.

[0012] As an option, a feeding device is provided at the upper end of each packed tower.

[0013] As another option, the tops of the packed towers are connected to the same feeding device via feeding pipes, which is more cost-effective.

[0014] Furthermore, the discharging device includes a discharging container, the upper end of the discharging container is connected to the lower end of the packing tower through a discharging pipe, an upper discharging sealing valve is provided on the discharging pipe, and a lower discharging sealing valve is also provided between the lower end of the discharging container and the discharge port.

[0015] In this way, it is convenient to control the packed tower to achieve continuous discharge, and the upper and lower sealing valves of the discharge container can avoid gas leakage during discharge, thereby improving discharge safety.

[0016] Furthermore, the feed pipe and the discharge pipe are each provided with a flow regulating valve, so that the flow rate of the packing in each packed tower can be regulated and controlled.

[0017] As an option, the shell is in a rectangular structure as a whole, and the packed towers are arranged in rows inside the shell, which makes the structure simpler.

[0018] As another option, the shell is in a cylindrical structure, and the packed towers are arranged in a coaxial ring inside the shell, which can withstand a higher gas pressure.

[0019] Furthermore, a movable baffle is provided in the middle of the airflow chamber inside the packing tower. The movable baffle is circular and matches the horizontal section of the airflow chamber. The middle of the movable baffle is rotatably mounted on the inner wall of the airflow chamber by means of a rotating shaft, and one end of the rotating shaft is connected to a control servo.

[0020] In this way, by controlling the rotation of the movable baffle, the upper and lower connecting areas of the airflow chamber can be adjusted, thereby adjusting the inlet and outlet residence time of the gas to be treated. When the concentration of the pollutants to be purified in the incoming air is low, the movable baffle can be controlled to a vertical state to increase the gas flow rate. When the concentration of the pollutants to be purified in the incoming air is high, the movable baffle can be controlled to a nearly horizontal state to reduce the gas flow rate and extend the residence time. Therefore, targeted adjustments can be made based on the pollutant concentration to better achieve qualified treatment results.

[0021] In summary, the utility model can improve the treatment efficiency while ensuring that the filler has better integrity and permeability, and can also make targeted adjustments to the concentration of pollutants to better achieve qualified treatment effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of Example 1 of the present utility model. The arrows in the figure indicate the direction of gas flow in the gas flow channel.

[0023] Figure 2 for Figure 1 Top view in .

[0024] Figure 3 This is a structural diagram of Example 2 of the present utility model.

[0025] Figure 4 for Figure 3 Top view of . DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with a mobile blast furnace gas desulfurization device that adopts the structure of the present invention.

[0027] Example 1: See Figure 1-2 , an industrial flue gas purification and treatment equipment, including a shell 1, an air inlet 2 is provided at the lower end of the shell 1, an air outlet 3 is provided at the upper end, a vertically arranged packing tower 4 is provided inside the shell 1, the packing tower 4 is a double-layer air filter sleeve structure, the double-layer air filter sleeves are provided with a packing area 5, the inner layer of the air filter sleeve is provided with an air flow chamber 6, a feeding device is provided above the shell and connected to the upper end of the packing tower, and a discharging device is provided below the shell and connected to the lower end of the packing tower. Its characteristic is that the packing tower 4 is a plurality of horizontally spaced arrangements, and a horizontal fixed partition 18 is provided between the outer side of the packing tower and the inner wall of the shell.

[0028] In this way, when the equipment is in use, the packing enters the packing tower from the feeding device. After the flue gas to be treated enters the inner cavity of the shell from the air inlet, it is blocked by the fixed partition and forced into the air flow chamber inside the packing tower. It then passes through the packing tower above the fixed partition and is discharged from the air outlet. The flue gas passes through the packing area in the packing tower in a zigzag manner and contacts and reacts with the packing to achieve treatment, resulting in a better reaction treatment effect. At the same time, the design of multiple packing towers for parallel treatment greatly increases the contact area between the flue gas and the packing, thereby reducing the height of the packing tower and preventing the packing below from being easily crushed due to excessive height. The increased contact area also allows the packing area to be thinner, avoiding the impact of thick thickness on gas permeability. Therefore, it can improve treatment efficiency while ensuring better integrity and permeability of the packing.

[0029] Among them, the feeding device includes a feeding container 7, a feeding hopper 8 is connected to the upper end of the feeding container 7, and a feeding pipe 9 is provided at the lower end, which passes downward through the outer shell and is connected to the upper end of the packing tower. A feeding upper sealing valve 10 is provided between the feeding container and the feeding hopper, and a feeding lower sealing valve 11 is provided on the feeding pipe between the feeding container and the packing tower.

[0030] In this way, after feeding from the feed hopper, the material is first stored in the feed container, which facilitates the control of continuous feeding into the packed tower and realizes the mobile reaction control of the filler. Sealing valves are set at the upper and lower ends of the feed container to avoid gas leakage from the bottom when feeding from the feed hopper, thereby improving the feeding safety.

[0031] In this embodiment, a feeding device is correspondingly provided at the upper end of each packing tower 4 .

[0032] Among them, the discharging device includes a discharging container 12, the upper end of the discharging container 12 is connected to the lower end of the packing tower 4 through the discharging pipe 13, and a discharging upper sealing valve 14 is provided on the discharging pipe 13, and a discharging lower sealing valve 15 is also provided between the lower end of the discharging container and the discharge port.

[0033] In this way, it is convenient to control the packed tower to achieve continuous discharge, and the upper and lower sealing valves of the discharge container can avoid gas leakage during discharge, thereby improving discharge safety.

[0034] The feed pipe 9 and the discharge pipe 13 are each provided with a flow regulating valve, so that the flow rate of the packing in each packed tower can be regulated and controlled.

[0035] In this embodiment, the housing 1 is in a rectangular structure as a whole, and the packing towers 4 are arranged in rows inside the housing, which makes the structure simpler.

[0036] Among them, a movable baffle 16 is also provided in the middle of the air flow chamber inside the packed tower 4. The movable baffle 16 is circular and matches the horizontal cross-section of the air flow chamber. The middle part of the movable baffle is rotatably mounted on the inner wall of the air flow chamber by means of a rotating shaft, and one end of the rotating shaft is connected to a control servo 17.

[0037] In this way, by controlling the rotation of the movable baffle, the upper and lower connecting areas of the airflow chamber can be adjusted, thereby adjusting the inlet and outlet residence time of the gas to be treated. When the concentration of the pollutant components to be purified in the intake air is low, the movable baffle can be controlled to a vertical state to increase the gas flow rate. When the concentration of the pollutant components to be purified in the intake air is high, the movable baffle can be controlled to a nearly horizontal state to reduce the gas flow rate and extend the residence time. Therefore, targeted adjustments can be made based on the pollutant content concentration to better achieve a qualified treatment effect. When implemented, this equipment can be used for the desulfurization of sulfur-containing coal gas or the purification of industrial exhaust gas.

[0038] Example 2, see Figure 3-4In this embodiment, each packing tower 4 is connected to the same feeding device via a feed pipe 9. This further reduces costs. In this embodiment, the outer shell 1 is an overall cylindrical structure, and the packing towers 4 are arranged in a coaxial ring within the outer shell 1. This allows for greater gas pressure resistance. The remaining structure of this embodiment is the same as that of Example 1 and will not be described in detail here.

Claims

1. An industrial flue gas purification and treatment equipment, comprising a shell, an air inlet is provided at the lower end of the shell, an air outlet is provided at the upper end, a vertically arranged packing tower is provided inside the shell, the packing tower is a double-layer air filter sleeve structure, a packing area is provided between the double-layer air filter sleeves, an air flow chamber is provided inside the inner air filter sleeve, a feeding device is provided above the shell and connected to the upper end of the packing tower, and a discharging device is provided below the shell and connected to the lower end of the packing tower, characterized in that: The packing towers are multiple and arranged horizontally at intervals, and a horizontal fixed partition is provided between the outer side of the packing tower and the inner wall of the shell.

2. The industrial flue gas purification equipment according to claim 1, characterized in that: The feeding device includes a feeding container, a feeding hopper is connected to the upper end of the feeding container, a feeding pipe is provided at the lower end, and the feeding pipe passes downward through the shell and is connected to the upper end of the packing tower. An upper feeding sealing valve is provided between the feeding container and the feeding hopper, and a lower feeding sealing valve is provided on the feeding pipe between the feeding container and the packing tower.

3. The industrial flue gas purification equipment according to claim 2, characterized in that: A feeding device is correspondingly provided at the upper end of each packing tower.

4. The industrial flue gas purification equipment according to claim 2, characterized in that: The top of each packed tower is connected to the same feeding device through a feeding pipe.

5. The industrial flue gas purification equipment according to claim 2, characterized in that: The discharging device includes a discharging container, the upper end of the discharging container is connected to the lower end of the packing tower through a discharging pipe, an upper discharging sealing valve is provided on the discharging pipe, and a lower discharging sealing valve is also provided between the lower end of the discharging container and the discharge port.

6. The industrial flue gas purification equipment according to claim 5, characterized in that: The feed pipe and the discharge pipe are each provided with a flow regulating valve.

7. The industrial flue gas purification equipment according to claim 1, characterized in that: The shell is in a rectangular structure as a whole, and the packing towers are arranged in rows inside the shell.

8. The industrial flue gas purification equipment according to claim 1, characterized in that: The shell is in a cylindrical structure as a whole, and the packing towers are arranged in a coaxial ring shape inside the shell.

9. The industrial flue gas purification equipment according to claim 1, characterized in that: A movable baffle is also provided in the middle of the airflow chamber inside the packing tower. The movable baffle is circular and matches the horizontal section of the airflow chamber. The middle of the movable baffle is rotatably mounted on the inner wall of the airflow chamber by a rotating shaft, and one end of the rotating shaft is connected to a control servo.

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