A waste gas recovery treatment device for an alloy smelting furnace
Patent Information
- Application Number
- CN202521935571.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-09-09
AI Technical Summary
[0003]为了弥补以上不足，本实用新型提供了一种合金熔炼炉的废气回收处理装置，旨在改善现有技术中无法回收废气中的余热与有价成分，浪费能源资源的问题
1、本实用新型中，通过导流缓冲锥减缓废气流速，使废气均匀分布，储水腔与排气管之间为冷水通道，可吸收废气初始阶段的大量热量，产生的温水可用于生产过程的用水，螺旋管内通入低温导热油，可吸收废气中温阶段的热量，加热后的导热油可输送至生产流程中进行预加热，实现热量的回收，节约能源。
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Figure CN224920961U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of alloy smelting technology, and in particular to a waste gas recovery and treatment device for an alloy smelting furnace. Background Technology
[0002] Alloy melting furnaces are core equipment used in industrial production to melt various metal raw materials into alloys with specific compositions. They are widely used in various fields and can precisely control the temperature, atmosphere and melting time in the furnace according to the melting requirements of different alloys. This ensures that the metal raw materials are fully melted and mixed evenly, and removes impurities, ultimately obtaining alloy melts with qualified composition and stable performance, providing high-quality raw materials for subsequent casting and forging processes. Alloy smelting furnaces generate large amounts of high-temperature waste gas during production, which contains dust and harmful gases. These gases can be collected, purified, and recycled through technological means. In the past, the waste gas from alloy smelting furnaces was mainly treated by natural diffusion and simple filtration, which only intercepted large dust particles before being directly discharged. This method has low equipment cost and simple structure, but the treatment efficiency is extremely low, and a large amount of harmful gases and fine dust are still emitted. Existing waste gas recovery and treatment devices for alloy smelting furnaces collect waste gas through a closed gas collection hood, transport it through pipelines to a pretreatment system, and then enter the core purification unit. However, existing mechanisms cannot recover the residual heat and valuable components in the waste gas, thus wasting energy resources. Utility Model Content
[0003] To overcome the above shortcomings, this utility model provides a waste gas recovery and treatment device for alloy smelting furnaces, aiming to improve the problem of the inability to recover waste heat and valuable components from waste gas in the existing technology, thus wasting energy resources.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a waste gas recovery and treatment device for an alloy smelting furnace, comprising a flow guide buffer cone, wherein a recovery and treatment mechanism is provided at the top of the flow guide buffer cone, the recovery and treatment mechanism is used to recover heat and treat dust, and a pretreatment mechanism is provided in the middle of the recovery and treatment mechanism, the pretreatment mechanism is used to pretreat the dust in the waste gas. The recycling and processing mechanism includes a guide plate, which is fixed to the bottom surface of the guide buffer cone. The top of the guide plate is connected to an exhaust pipe, and the outer wall of the exhaust pipe is provided with a primary recycling component. The top of the exhaust pipe is connected to a guide pipe, and the outer wall of one end of the guide pipe is provided with a secondary recycling component. One end of the guide pipe is connected to an acceleration cone, and the other end of the acceleration cone is provided with a dust removal component.
[0005] As a further description of the above technical solution: The pretreatment mechanism includes a baffle fixed to the inner wall of the guide pipe, a fixed pile fixedly connected to the outer wall of the guide pipe, a rotating component provided on the outer wall of the fixed pile, a scraper provided on the outer wall of the rotating component, a collection component provided at the bottom of the guide pipe, and a guide plate provided at the top of the collection component.
[0006] As a further description of the above technical solution: The primary recycling component includes a water storage chamber, which is fixed to the outer wall of the exhaust pipe. The bottom of the water storage chamber is connected to an inlet pipe, and the upper outer wall of the water storage chamber is connected to an outlet pipe.
[0007] As a further description of the above technical solution: The secondary recovery component includes a spiral tube wound around the outer wall of the guide pipe. The right end of the spiral tube has an outlet, and the left end of the spiral tube has an inlet.
[0008] As a further description of the above technical solution: The dust removal assembly includes a cyclone separator, one end of which is connected to one end of an acceleration cone, and an exhaust port is connected to the top of the cyclone separator.
[0009] As a further description of the above technical solution: The rotating assembly includes a rotating cylinder, the inner wall of which is rotatably connected to the outer wall of the fixed pile, and multiple impellers are fixedly connected to the outer wall of the rotating cylinder.
[0010] As a further description of the above technical solution: The collection component includes an opening at the bottom of the guide pipe, and a collection box is disposed at the bottom of the opening.
[0011] As a further description of the above technical solution: The outer wall of the spiral tube is fixedly connected to a protective shell, and the guide plate is inclined to slow down the exhaust gas flow rate.
[0012] This utility model has the following beneficial effects: 1. In this utility model, the flow-guiding buffer cone slows down the exhaust gas flow rate, making the exhaust gas evenly distributed. The water storage chamber and the exhaust pipe are cold water channels, which can absorb a large amount of heat in the initial stage of the exhaust gas. The generated warm water can be used for water in the production process. Low-temperature heat transfer oil is introduced into the spiral tube, which can absorb the heat in the middle stage of the exhaust gas. The heated heat transfer oil can be transported to the production process for preheating, realizing heat recovery and saving energy.
[0013] 2. In this utility model, large-diameter dust particles in the exhaust gas impact the baffle and slide down the baffle, then enter the collection box through the opening, thus achieving preliminary dust removal. When the exhaust gas flows through the impeller, the high-speed airflow impacts the impeller, causing the impeller to rotate, which in turn drives the rotating cylinder to rotate. The outer wall of the rotating cylinder is fixedly connected to a scraper, which continuously scrapes the outer wall of the baffle to achieve self-cleaning and prevent the baffle from clogging. Attached Figure Description
[0014] Figure 1 This is a front perspective view of a waste gas recovery and treatment device for an alloy smelting furnace proposed in this utility model. Figure 2 This is a partial structural exploded view of the water storage chamber of a waste gas recovery and treatment device for an alloy smelting furnace proposed in this utility model. Figure 3 This is a partial structural diagram of the secondary recovery component of a waste gas recovery and treatment device for an alloy smelting furnace proposed in this utility model. Figure 4 This is a partial structural diagram of the rotating component of a waste gas recovery and treatment device for an alloy smelting furnace proposed in this utility model. Figure 5 This is a partial structural breakdown diagram of the collection component of the waste gas recovery and treatment device for an alloy smelting furnace proposed in this utility model.
[0015] Legend: 1. Flow guiding buffer cone; 2. Recycling and processing mechanism; 201. Flow guide plate; 202. Exhaust pipe; 203. Primary recycling component; 2031. Water storage chamber; 2032. Water inlet pipe; 2033. Water outlet pipe; 204. Guide pipe; 205. Secondary recycling component; 2051. Spiral tube; 2052. Liquid inlet; 2053. Liquid outlet; 206. Accelerating cone; 207. Dust removal component; 2071. Cyclone; 2072. Exhaust vent; 3. Pretreatment mechanism; 301. Baffle; 302. Fixing pile; 303. Rotating component; 3031. Rotating cylinder; 3032. Impeller; 304. Scraper; 305. Collection component; 3051. Opening; 3052. Collection box; 306. Guide plate; 4. Protective shell. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see the appendix Figure 1 - AppendixFigure 3 This utility model provides an embodiment of a waste gas recovery and treatment device for an alloy smelting furnace, comprising a flow guide buffer cone 1, a recovery and treatment mechanism 2 disposed at the top of the flow guide buffer cone 1, the recovery and treatment mechanism 2 being used to recover heat and treat dust, and a pretreatment mechanism 3 disposed in the middle of the recovery and treatment mechanism 2, the pretreatment mechanism 3 being used to pretreat the dust in the waste gas. The recycling and processing mechanism 2 includes a guide plate 201, which is fixed to the bottom surface of the guide buffer cone 1. The top of the guide plate 201 is connected to an exhaust pipe 202. The outer wall of the exhaust pipe 202 is provided with a primary recycling component 203. The top of the exhaust pipe 202 is connected to a guide pipe 204. One end of the guide pipe 204 is provided with a secondary recycling component 205. One end of the guide pipe 204 is connected to an acceleration cone 206. The other end of the acceleration cone 206 is provided with a dust removal component 207. Specifically, the guide cone 1 receives the high-temperature exhaust gas discharged from the alloy smelting furnace. Its conical structure initially gathers and guides the exhaust gas, preventing direct diffusion and reducing subsequent treatment efficiency. It also buffers the initial impact of the exhaust gas, creating a stable environment for subsequent treatment processes. A recovery and treatment mechanism 2 is located at the top of the guide cone 1. This mechanism recovers heat and treats dust. Specifically, it uses multi-stage heat recovery components to efficiently extract heat energy from the exhaust gas, reducing energy waste. Simultaneously, it removes solid particulate matter from the exhaust gas, reducing its pollution. A pretreatment mechanism 3 is located in the middle of the recovery and treatment mechanism 2. Used for pre-treatment of dust in exhaust gas, this mechanism intercepts and separates some large dust particles in advance, reducing the workload of subsequent dust removal, improving the overall dust removal effect, and extending the service life of core dust removal components. The recycling and treatment mechanism 2 includes a guide plate 201, which is fixed to the bottom surface of the guide buffer cone 1. The guide plate 201 is inclined to slow down the exhaust gas flow rate, effectively reducing the exhaust gas flow velocity and guiding the exhaust gas smoothly into the subsequent pipeline, preventing local eddies from affecting the treatment effect. An exhaust pipe 202 is connected to the top of the guide plate 201. The exhaust pipe 202 serves as the core channel for exhaust gas transmission, responsible for removing the waste gas after buffering by the guide plate 201. The exhaust gas is stably delivered to the primary recovery component 203 area. The primary recovery component 203 is installed on the outer wall of the exhaust pipe 202. The primary recovery component 203 is used for preliminary heat recovery of the exhaust gas, utilizing the temperature difference between the exhaust gas and the medium inside the component to achieve heat energy exchange and extract most of the sensible heat from the exhaust gas. A guide pipe 204 is connected to the top of the exhaust pipe 202. The guide pipe 204 receives the exhaust gas delivered from the exhaust pipe 202 and guides it to the secondary recovery component 205 and the pretreatment mechanism 3. It also provides an installation carrier for the various components of the pretreatment mechanism 3. A secondary recovery component 205 is installed on the outer wall of one end of the guide pipe 204. The secondary recovery component 205 is used to recover heat from the exhaust gas after it has passed through the primary recovery component 202. The waste gas after primary recovery undergoes deep heat recovery to further extract the remaining heat energy in the waste gas, improve the overall heat recovery efficiency, and maximize energy utilization. One end of the guide pipe 204 is connected to an acceleration cone 206. The acceleration cone 206, through its conical contraction structure, gradually accelerates the pre-treated waste gas inside the cone, forming a high-speed rotating airflow. This provides the necessary flow velocity conditions for subsequent cyclone dust removal and enhances the separation effect between dust and airflow. The other end of the acceleration cone 206 is equipped with a dust removal component 207. As the core dust removal component, the dust removal component 207 uses the centrifugal force generated by the rotation of the airflow to separate dust particles from the waste gas, thereby achieving the purification treatment of the waste gas.
[0018] Please see the appendix Figure 4 - Appendix Figure 5The pretreatment mechanism 3 includes a baffle 301, which is fixed to the inner wall of the guide pipe 204. A fixing pile 302 is fixedly connected to the outer wall of the guide pipe 204. A rotating component 303 is provided on the outer wall of the fixing pile 302. A scraper 304 is provided on the outer wall of the rotating component 303. A collection component 305 is provided at the bottom of the guide pipe 204. A guide plate 306 is provided at the top of the collection component 305. Specifically, the pretreatment mechanism 3 includes a baffle 301, which is fixed to the inner wall of the guide pipe 204. The baffle 301 blocks and diverts the waste gas flowing within the guide pipe 204, forcing the waste gas to change its flow direction. During this process, larger and heavier dust particles in the waste gas will impact the baffle 301 due to inertia, achieving initial interception and separation. A fixing pile 302 is fixedly connected to the outer wall of the guide pipe 204. The fixing pile 302 provides stable installation support for the rotating component 303, ensuring that the rotating component 303 can maintain stable rotation under the impact of the waste gas. The rotating component 303 is installed on the outer wall of the fixing pile 302. The rotating component 303 uses the kinetic energy of the waste gas flow to drive its own rotation, causing the scraper 304 to clean the baffle 301 and the inner wall of the guide pipe 204, preventing... Dust accumulation can clog pipes. A scraper 304 is installed on the outer wall of the rotating component 303. During rotation, the scraper 304 closely adheres to the surface of the baffle 301 and the inner wall of the guide pipe 204, scraping off the attached dust to ensure the cleanliness of the component surface and to avoid affecting the flow of exhaust gas and pretreatment effect. A collection component 305 is installed at the bottom of the guide pipe 204 to collect the dust intercepted by the baffle 301 and scraped off by the scraper 304, preventing dust from re-mixing into the exhaust gas and facilitating subsequent centralized dust treatment. A guide plate 306 is installed at the top of the collection component 305. The guide plate 306 is inclined and its function is to guide the scraped dust to the collection area of the collection component 305, preventing dust from scattering around the bottom of the guide pipe 204 and ensuring efficient dust collection.
[0019] Please see the appendix Figure 1 - Appendix Figure 3 The primary recovery component 203 includes a water storage chamber 2031, which is fixed to the outer wall of the exhaust pipe 202. The bottom of the water storage chamber 2031 is connected to a water inlet pipe 2032, and the upper outer wall of the water storage chamber 2031 is connected to a water outlet pipe 2033. The secondary recovery component 205 includes a spiral tube 2051, which is wound around the outer wall of the guide pipe 204. The right end of the spiral tube 2051 is provided with a liquid outlet 2053, and the left end of the spiral tube 2051 is provided with a liquid inlet 2052. The dust removal component 207 includes a cyclone 2071, one end of which is connected to one end of the acceleration cone 206, and the top of the cyclone 2071 is connected to an exhaust port 2072. Specifically, the primary recovery component 203 includes a water storage chamber 2031, which is fixed to the outer wall of the exhaust pipe 202. The chamber stores cold water for heat exchange. By wrapping the exhaust pipe 202, the heat from the high-temperature exhaust gas inside the exhaust pipe 202 is transferred to the water in the chamber, achieving heat absorption. A water inlet pipe 2032 connects to the bottom of the water storage chamber 2031, continuously replenishing the chamber with low-temperature cold water to ensure sufficient heat exchange medium and maintain stable heat recovery efficiency. A water outlet pipe 2033 connects to the upper outer wall of the water storage chamber 2031, discharging the heated water after absorbing the heat from the exhaust gas, achieving secondary utilization of the heat energy. The secondary recovery component 205 includes a spiral tube 2051, which is wound around the outer wall of the guide pipe 204. The spiral structure significantly increases the interaction with the guide pipe 204. The contact area allows the heat of the exhaust gas in the pipe to be transferred more fully to the heat exchange medium flowing inside the pipe, improving the heat recovery efficiency. The right end of the spiral tube 2051 is provided with a liquid outlet 2053, which is used to discharge the heat exchange medium whose temperature has increased after absorbing heat. The left end of the spiral tube 2051 is provided with a liquid inlet 2052, which is used to inject low-temperature heat exchange medium into the spiral tube 2051 to ensure continuous heat exchange. The dust removal component 207 includes a cyclone 2071, one end of which is connected to one end of the acceleration cone 206. The centrifugal force generated by the high-speed rotating airflow inside causes the dust particles in the exhaust gas to be thrown against the cylinder wall and then fall down along the cylinder wall, realizing the separation of dust and exhaust gas. The top of the cyclone 2071 is connected to an exhaust port 2072, which is used to discharge the exhaust gas after being purified by the cyclone dust removal.
[0020] Please see the appendix Figure 3 - Appendix Figure 5 The rotating assembly 303 includes a rotating cylinder 3031, the inner wall of which is rotatably connected to the outer wall of the fixed pile 302. Multiple impellers 3032 are fixedly connected to the outer wall of the rotating cylinder 3031. The collecting assembly 305 includes an opening 3051, which is opened at the bottom of the guide pipe 204. A collecting box 3052 is provided at the bottom of the opening 3051. A protective shell 4 is fixedly connected to the outer wall of the spiral tube 2051. The guide plate 201 is inclined to slow down the flow rate of the exhaust gas. Specifically, the rotating assembly 303 includes a rotating cylinder 3031, the inner wall of which is rotatably connected to the outer wall of the fixed pile 302. The rotating cylinder 3031 can rotate flexibly around the fixed pile 302, providing rotational power support for the impeller 3032 and the scraper 304. Multiple impellers 3032 are fixedly connected to the outer wall of the rotating cylinder 3031. The impellers 3032 generate rotational torque under the impact of the exhaust gas flow, driving the rotating cylinder 3031 to rotate, converting the kinetic energy of the exhaust gas into the mechanical energy of the rotating assembly 303. No additional power is required, which is energy-saving and environmentally friendly. The collecting assembly 305 includes an opening 3051, which is formed in the guide pipe. The bottom of 204 serves as a channel for dust to fall, allowing intercepted and scraped dust to enter the collection box 3052 through the opening 3051. The collection box 3052 is located at the bottom of the opening 3051 and is used to directly receive the dust falling from the opening 3051. The structure is detachable, making it easy to clean the dust collected inside the box regularly. A protective shell 4 is fixedly connected to the outer wall of the spiral tube 2051. The protective shell 4 is used to protect the spiral tube 2051 and prevent external damage to the spiral tube 2051. It can reduce the heat exchange between the spiral tube 2051 and the external environment, ensure that the heat of the heat exchange medium is not lost, and improve the heat recovery effect.
[0021] Working principle: The flow-guiding buffer cone 1 has a conical structure, with its inlet connected to the exhaust gas outlet of the alloy smelting furnace. An inclined guide plate 201 is installed inside the flow-guiding buffer cone 1 to slow down the exhaust gas flow rate, preventing high-speed airflow from directly impacting subsequent components and causing damage, thus ensuring uniform distribution of the exhaust gas. The water storage chamber 2031 is fitted onto the outer wall of the exhaust pipe 202. The inner wall of the exhaust pipe 202 serves as an exhaust gas passage, and the space between the water storage chamber 2031 and the exhaust pipe 202 is a cold water passage. Cold water enters from the inlet pipe 2032 and flows out through the outlet pipe 2033. The exhaust gas can absorb a large amount of heat in the initial stage of the exhaust gas, and the generated warm water can be used for water in the production process. After the exhaust gas is pre-treated by the pretreatment mechanism 3, the spiral tube 2051 is wound around the rear section of the guide pipe 204. Low temperature heat transfer oil is introduced into the spiral tube 2051, which can absorb the heat in the middle stage of the exhaust gas. The heated heat transfer oil can be transported to the production process for preheating. Finally, after the exhaust gas is treated by the cyclone 2071, the harmless gas is discharged from the exhaust port 2072 for the next step of treatment. When the exhaust gas passes through the baffle 301 at high speed, due to inertia, large dust particles in the exhaust gas will hit the baffle 301 and slide down along the baffle 301, and then enter the collection box 3052 through the opening 3051. The guide plate 306 at the top of the collection box 3052 prevents large particles from flowing back into the guide pipe 204 under the action of the airflow, thus achieving preliminary dust removal. When the exhaust gas airflow passes through the impeller 3032, the high-speed airflow impacts the impeller 3032, causing the impeller 3032 to rotate, thereby driving the rotating cylinder 3031 to rotate. The outer wall of the rotating cylinder 3031 is fixedly connected to the scraper 304, which continuously scrapes the outer wall of the baffle 301 to achieve self-cleaning and prevent the baffle 301 from clogging.
[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A waste gas recovery and treatment device for an alloy smelting furnace, comprising a flow guide buffer cone (1), characterized in that: The top of the flow guide buffer cone (1) is provided with a recycling and treatment mechanism (2), which is used to recover heat and treat dust. The middle part of the recycling and treatment mechanism (2) is provided with a pretreatment mechanism (3), which is used to pretreat the dust in the exhaust gas. The recycling and processing mechanism (2) includes a guide plate (201), which is fixed to the bottom surface of the guide buffer cone (1). The top of the guide plate (201) is connected to an exhaust pipe (202). The outer wall of the exhaust pipe (202) is provided with a primary recycling component (203). The top of the exhaust pipe (202) is connected to a guide pipe (204). The outer wall of one end of the guide pipe (204) is provided with a secondary recycling component (205). One end of the guide pipe (204) is connected to an acceleration cone (206). The other end of the acceleration cone (206) is provided with a dust removal component (207).
2. The waste gas recovery and treatment device for an alloy smelting furnace according to claim 1, characterized in that: The pretreatment mechanism (3) includes a baffle (301), which is fixed to the inner wall of the guide pipe (204). A fixing pile (302) is fixedly connected to the outer wall of the guide pipe (204). A rotating component (303) is provided on the outer wall of the fixing pile (302). A scraper (304) is provided on the outer wall of the rotating component (303). A collection component (305) is provided at the bottom of the guide pipe (204). A guide plate (306) is provided at the top of the collection component (305).
3. The waste gas recovery and treatment device for an alloy smelting furnace according to claim 1, characterized in that: The primary recycling component (203) includes a water storage chamber (2031), which is fixed to the outer wall of the exhaust pipe (202). The bottom of the water storage chamber (2031) is connected to an inlet pipe (2032), and the upper outer wall of the water storage chamber (2031) is connected to an outlet pipe (2033).
4. The waste gas recovery and treatment device for an alloy smelting furnace according to claim 1, characterized in that: The secondary recovery component (205) includes a spiral tube (2051) which is wound around the outer wall of the guide pipe (204). The right end of the spiral tube (2051) is provided with a liquid outlet (2053) and the left end of the spiral tube (2051) is provided with a liquid inlet (2052).
5. The waste gas recovery and treatment device for an alloy smelting furnace according to claim 1, characterized in that: The dust removal assembly (207) includes a cyclone (2071), one end of which is connected to one end of an acceleration cone (206), and the top of the cyclone (2071) is connected to an exhaust port (2072).
6. The waste gas recovery and treatment device for an alloy smelting furnace according to claim 2, characterized in that: The rotating assembly (303) includes a rotating cylinder (3031), the inner wall of which is rotatably connected to the outer wall of the fixed pile (302), and a plurality of impellers (3032) are fixedly connected to the outer wall of the rotating cylinder (3031).
7. The waste gas recovery and treatment device for an alloy smelting furnace according to claim 2, characterized in that: The collection component (305) includes an opening (3051) at the bottom of the guide pipe (204), and a collection box (3052) is provided at the bottom of the opening (3051).
8. The waste gas recovery and treatment device for an alloy smelting furnace according to claim 4, characterized in that: The outer wall of the spiral tube (2051) is fixedly connected to a protective shell (4), and the guide plate (201) is inclined to slow down the exhaust gas flow rate.