An acidic waste gas dry treatment device based on a steel slag-biomass composite adsorbent

Abstract

The utility model discloses a kind of acid waste gas dry-type processing device based on steel slag-biomass composite adsorbent, specifically related to acid waste gas treatment technical field, including installation box, air inlet hopper and gas outlet pipe, and the end of air inlet hopper and gas outlet pipe is fixedly interconnected with installation box, the other end of gas outlet pipe is fixedly installed with exhaust fan by bolt, the rear side of installation box is fixedly interconnected with heating box, the top end of heating box is fixedly embedded and installed with microwave generator main body, the inside of installation box is fixedly connected with heat conduction partition frame, three purification components are arranged in the inside of heat conduction partition frame.The utility model passes through the acid waste gas of exhaust fan work extraction, stepping motor work makes that composite adsorbent moves into heating box, microwave generator main body works and emits microwave, and makes that composite adsorbent internal crystallization water vaporization or decomposes partial reaction product, easy to operate, it is convenient to repeatedly use for composite adsorbent, effectively reduce purification cost.

Description

Technical Field

[0001] This utility model relates to the field of acidic waste gas treatment technology, and more specifically, to a dry treatment device for acidic waste gas based on a steel slag-biomass composite adsorbent. Background Technology

[0002] Acidic waste gas refers to harmful industrial waste gas containing acidic substances emitted during factory production. This type of waste gas contains substances that make the gas itself (or the gas dissolved in water) acidic. When it encounters an alkali, it will undergo a neutralization reaction and will also cause harm to the environment, equipment, and human body. Acidic waste gas treatment uses technical means to remove or reduce the harmful acidic substances in the acidic waste gas to extremely low levels, so that the treated gas meets national emission standards and can be safely discharged into the air.

[0003] In existing treatments of acidic waste gas, purification plates filled with chemically synthesized alkaline adsorbents are often used. However, these adsorbents have significant drawbacks: on the one hand, their production relies on high-temperature and high-energy-consuming processes such as limestone calcination and chemical synthesis, resulting in high raw material procurement costs, large carbon emissions, and significant energy consumption during production, leading to poor overall economic and environmental performance; on the other hand, once the adsorbent reaches saturation with acidic substances, it forms mixed solid waste containing heavy metals and soluble salts, which is inconvenient to recycle. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides an acidic waste gas dry treatment device based on steel slag-biomass composite adsorbent, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dry treatment device for acidic waste gas based on steel slag-biomass composite adsorbent, comprising an installation box, an inlet hopper, and an outlet pipe, wherein one end of the inlet hopper and the outlet pipe are fixedly connected to the installation box, and the other end of the outlet pipe is fixedly installed with an exhaust fan by bolts. A heating box is fixedly connected to the rear side of the installation box, and a microwave generator body is fixedly embedded in the top of the heating box. A heat-conducting partition is fixedly connected inside the installation box, and three purification components are arranged inside the heat-conducting partition. Each of the three purification components includes a storage frame, a composite adsorbent, a stepper motor, a lead screw, three sliding rods, and a sealing baffle. The three composite adsorbents are respectively movably arranged inside the three storage frames.

[0006] Furthermore, all three stepper motors are fixedly mounted on the front side of the mounting box, and the output shaft ends of the three stepper motors are respectively fixedly connected to three lead screws. One end of each of the three lead screws and multiple slide rods passes through the three storage frames, and the three lead screws are respectively threadedly connected to the three storage frames.

[0007] Furthermore, the three sealing baffles are locked to the rear sides of the three storage frames by fasteners, and the front sides of the three sealing baffles are in contact with the three composite adsorbents respectively.

[0008] Furthermore, perforated plates are fixedly embedded in the top and sides of the three storage frames, and one side of each of the perforated plates is in contact with the three composite adsorbents.

[0009] It can be seen that the above technical solution is designed to facilitate the entry of acidic waste gas into the storage frame.

[0010] Furthermore, the rear side of the heating box is movably connected to three sealing doors via hinges. Each of the three sealing doors has two limiting plates at its bottom, and the front sides of the multiple limiting plates are fixedly connected to the heating box.

[0011] Furthermore, both sides of the heating box are fixedly connected to heat-insulating gas pipes, and the other ends of the two heat-insulating gas pipes are fixedly connected to the mounting box.

[0012] As can be seen, in the above technical solution, some of the hot steam in the heating box enters the installation box through two insulated air pipes.

[0013] Furthermore, multiple heat-conducting plates are fixedly connected to the top of the heat-conducting partition.

[0014] As can be seen, in the above technical solution, multiple heat-conducting plates can absorb heat, thereby preheating the three composite adsorbents.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model uses an exhaust fan to extract acidic waste gas. The acidic components such as SO2 and HCl in the waste gas undergo a neutralization reaction with three composite adsorbents to generate stable salts. A stepper motor moves the placement frame and composite adsorbents into the heating box. The main body of the microwave generator emits microwaves of a specific frequency, which heats the composite adsorbents and causes the crystal water inside the composite adsorbents to vaporize or decompose some of the reaction products. The operation is simple, and the composite adsorbents can be reused, effectively reducing purification costs.

[0017] 2. In this utility model, after the composite adsorbent undergoes multiple regenerations and adsorption cycles, the activity of the composite adsorbent drops below the critical point. The sealing door is opened downwards, and two limiting plates can limit the sealing door. Then, the sealing baffle is opened and the composite adsorbent in the storage frame is cleaned. Finally, the heavy metals enriched in the composite adsorbent are recovered through processes such as acid leaching, ion exchange, and electrowinning. The structure is simple and the recovery is convenient. Attached Figure Description

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a rear-view perspective view of the present invention;

[0021] Figure 3 This is a cross-sectional view of the mounting box and a schematic diagram of the assembly structure of the purification components of this utility model.

[0022] Figure 4 This is a cross-sectional view of the mounting box and a cross-sectional view of the heating box assembly structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the assembly structure of the purification component and the perforated plate of this utility model.

[0024] In the diagram: 1. Installation box; 2. Air inlet hopper; 3. Air outlet pipe; 4. Exhaust fan; 5. Heating box; 6. Microwave generator main body; 7. Insulated air pipe; 8. Purification component; 9. Sealing door; 10. Limiting plate; 11. Heat-conducting partition rack; 12. Heat-conducting plate; 13. Mesh plate; 801. Storage frame; 802. Composite adsorbent; 803. Stepper motor; 804. Lead screw; 805. Slide rod; 806. Sealing baffle. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Refer to the instruction manual appendix Figure 1-3This embodiment describes a dry treatment device for acidic waste gas based on a steel slag-biomass composite adsorbent. It includes an installation box 1, an inlet hopper 2, and an outlet pipe 3. The inlet hopper 2 and the outlet pipe 3 are both fixedly connected to the installation box 1 at opposite ends. An exhaust fan 4 is bolted to the other end of the outlet pipe 3. A heating box 5 is fixedly connected to the rear side of the installation box 1. A microwave generator body 6 is fixedly embedded in the top of the heating box 5. A heat-conducting partition frame 11 is fixedly connected inside the installation box 1. Three purification components 8 are arranged inside the heat-conducting partition frame 11. Each of the three purification components 8 includes a storage frame 801, a composite adsorbent 802, a stepper motor 803, a lead screw 804, three sliding rods 805, and a sealing baffle 806. The three composite adsorbents 802 are movably disposed inside the three storage frames 801.

[0027] like Figure 3 and 5 As shown, three stepper motors 803 are fixedly installed on the front side of the mounting box 1, and the output shaft ends of the three stepper motors 803 are respectively fixedly connected to three lead screws 804. One end of the three lead screws 804 and multiple slide bars 805 respectively passes through the three storage frames 801, and the three lead screws 804 are respectively threadedly connected to the three storage frames 801.

[0028] like Figure 5 As shown, the three sealing baffles 806 are locked to the rear of the three storage frames 801 by fasteners, and the front of the three sealing baffles 806 are in contact with the three composite adsorbents 802 respectively, so as to facilitate the cleaning of the composite adsorbents 802.

[0029] like Figure 3 and 5 As shown, perforated plates 13 are fixedly embedded in the top and sides of the three storage frames 801, and one side of each of the perforated plates 13 is in contact with the three composite adsorbents 802 to facilitate the entry of acidic waste gas into the storage frames 801.

[0030] like Figure 2 As shown, the rear side of the heating box 5 is movably connected to three sealing doors 9 via hinges. The bottom of each of the three sealing doors 9 is provided with two limiting plates 10, and the front sides of the multiple limiting plates 10 are fixedly connected to the heating box 5 to facilitate the cleaning of the composite adsorbent 802.

[0031] like Figure 1-3 As shown, both sides of the heating box 5 are fixedly connected to the heat insulation pipes 7, and the other ends of the two heat insulation pipes 7 are fixedly connected to the mounting box 1, so as to facilitate the introduction of some of the hot steam in the heating box 5 into the mounting box 1.

[0032] like Figure 3 and 4As shown, multiple heat-conducting plates 12 are fixedly connected to the top of the heat-conducting partition 11. The multiple heat-conducting plates 12 can absorb heat, thereby preheating the three composite adsorbents 802.

[0033] The usage method of this embodiment is as follows:

[0034] When in use, start the exhaust fan 4. The exhaust fan 4 works to extract the acidic waste gas. The acidic waste gas enters the installation box 1 through the air inlet hopper 2. The acidic waste gas passes evenly through multiple mesh plates 13 and three composite adsorbents 802. It is worth noting that the three composite adsorbents 802 are all steel slag-biomass composite adsorbents with low raw material procurement costs. The acidic components such as SO2 and HCl in the waste gas undergo a neutralization reaction with the three composite adsorbents 802 and generate stable salts. The purified gas is discharged from the installation box 1 through the exhaust pipe 3 and finally discharged through the output end of the exhaust fan 4.

[0035] When the composite adsorbent 802 is close to saturation, the stepper motor 803 is started. The stepper motor 803 drives the lead screw 804 to rotate. Since the lead screw 804 is threadedly connected to the storage frame 801, and the three slide rods 805 restrict the rotation of the storage frame 801, the lead screw 804 can drive the storage frame 801 to move backward, so that the storage frame 801 and the composite adsorbent 802 move into the heating box 5. Then, the microwave generator body 6 is started. The microwave generator body 6 works and emits microwaves of a specific frequency, which can heat the composite adsorbent 802 and cause the crystal water inside the composite adsorbent 802 to vaporize or decompose some of the reaction products, thereby restoring most of the adsorption activity of the composite adsorbent 802. Similarly, after the regenerated composite adsorbent 802 cools down, it can be returned to the installation box 1 for continued use. The operation is simple and convenient for the reuse of the composite adsorbent 802, effectively reducing the purification cost.

[0036] Some of the hot steam in the heating box 5 enters the installation box 1 through two insulated air pipes 7, and the heat-conducting partition 11 and multiple heat-conducting plates 12 can absorb heat, thereby preheating the three composite adsorbents 802 and enabling the three composite adsorbents 802 to reach the regeneration temperature more quickly, effectively reducing the power consumption of microwave regeneration.

[0037] After multiple regenerations and adsorption cycles, the activity of the composite adsorbent 802 drops below the critical point. The sealing door 9 is then opened downwards, and the two limiting plates 10 can limit the sealing door 9. Then, the sealing baffle 806 is opened, and the composite adsorbent 802 in the storage frame 801 is cleaned. Finally, the heavy metals enriched in the composite adsorbent 802 are recovered through processes such as acid leaching, ion exchange, and electrowinning. The structure is simple and the recovery is convenient. At the same time, the main components of the remaining residue are calcium sulfate / chloride, which can be used as an additive in the production of building materials such as gypsum board, achieving harmless and resource-based disposal.

[0038] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dry treatment device for acidic waste gas based on steel slag-biomass composite adsorbent, comprising a mounting box (1), an inlet hopper (2), and an outlet pipe (3), wherein the opposite ends of the inlet hopper (2) and the outlet pipe (3) are fixedly connected to the mounting box (1), characterized in that: The other end of the exhaust pipe (3) is fixedly installed with a fan (4) by bolts. The rear side of the mounting box (1) is fixedly connected to a heating box (5). The top of the heating box (5) is fixedly embedded with a microwave generator body (6). The interior of the mounting box (1) is fixedly connected with a heat-conducting partition (11). The interior of the heat-conducting partition (11) is provided with three purification components (8). Each of the three purification components (8) includes a storage frame (801), a composite adsorbent (802), a stepper motor (803), a lead screw (804), three slide rods (805), and a sealing baffle (806). The three composite adsorbents (802) are respectively movably arranged inside the three storage frames (801).

2. The dry treatment device for acidic waste gas based on steel slag-biomass composite adsorbent according to claim 1, characterized in that: All three stepper motors (803) are fixedly installed on the front side of the mounting box (1), and the output shaft ends of the three stepper motors (803) are fixedly connected to the three lead screws (804) respectively. One end of the three lead screws (804) and the multiple slide rods (805) respectively passes through the three storage frames (801), and the three lead screws (804) are threadedly connected to the three storage frames (801) respectively.

3. The dry treatment device for acidic waste gas based on steel slag-biomass composite adsorbent according to claim 1, characterized in that: The three sealing baffles (806) are locked to the rear sides of the three storage frames (801) by fasteners, and the front sides of the three sealing baffles (806) are in contact with the three composite adsorbents (802) respectively.

4. The dry treatment device for acidic waste gas based on steel slag-biomass composite adsorbent according to claim 1, characterized in that: The top and sides of the three storage frames (801) are fixedly embedded with perforated plates (13), and one side of each of the perforated plates (13) is in contact with the three composite adsorbents (802).

5. The dry treatment device for acidic waste gas based on steel slag-biomass composite adsorbent according to claim 1, characterized in that: The rear side of the heating box (5) is movably connected to three sealing doors (9) via hinges. The bottom of each of the three sealing doors (9) is provided with two limiting plates (10), and the front side of each of the limiting plates (10) is fixedly connected to the heating box (5).

6. The dry treatment device for acidic waste gas based on steel slag-biomass composite adsorbent according to claim 1, characterized in that: Both sides of the heating box (5) are fixedly connected to heat-insulating air pipes (7), and the other ends of the two heat-insulating air pipes (7) are fixedly connected to the mounting box (1).

7. The dry treatment device for acidic waste gas based on steel slag-biomass composite adsorbent according to claim 1, characterized in that: Multiple heat-conducting plates (12) are fixedly connected to the top of the heat-conducting partition (11).

Images