Continuous compact mineralization reaction system and application method thereof

Abstract

The invention relates to the technical field of mineralization reaction equipment, and particularly discloses a continuous compact mineralization reaction system and an application method thereof. The mineralization reactor rotates around the axis direction of the mineralization reactor and can be inclined, the buffer bin is connected with one end of the mineralization reactor and used for temporarily storing solid waste raw materials, and the gas inlet mechanism is connected with the other end of the mineralization reactor and used for conveying mixed gas into the mineralization reactor. The flowing direction of the mixed gas in the mineralization reactor is opposite to the conveying direction of the solid waste raw material. The device can effectively realize continuous feeding and discharging of materials and efficient mineralization reaction, and has the functions of accurate parameter control and safety guarantee.

Description

Technical Field

[0001] This invention relates to the field of mineralization reaction equipment technology, and more specifically, to a continuous compact mineralization reaction system and its application method. Background Technology

[0002] Capturing, sequestering, and storing CO2 using solid waste is a promising and feasible strategy for controlling industrial carbon emissions, with advantages such as low cost, high reactivity, and large scale. Among these, using CO2 to mineralize solid waste is an important utilization pathway.

[0003] However, existing CO2 mineralization reaction systems still have many shortcomings: it is difficult to scale up continuous and stable feeding and discharging; there is a lack of digital control over the mixing and residence time of solid waste raw materials and reaction media (such as flue gas); there is a lack of systematic correspondence between reactor shell sealing, rotation speed and angle adjustment; key parameters such as gas flow rate, temperature and humidity, and air pressure lack systematic control indicators; and they cannot meet the production needs of efficient, precise and safe mineralization reaction products.

[0004] Therefore, there is an urgent need to develop a mineralization reaction system that is comprehensive in function, precise in control, and rationally structured to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a continuous compact mineralization reaction system and its application method, which can effectively realize continuous material input and output, efficient mineralization reaction, and has precise parameter control and safety assurance functions. The solution adopted by this invention to solve the technical problem is: A continuous compact mineralization reaction system includes a mineralization reactor that rotates around its axis and can be tilted, a buffer silo connected to one end of the mineralization reactor for temporary storage of solid waste raw materials, and an air inlet mechanism connected to the other end of the mineralization reactor for conveying mixed gas into the mineralization reactor; the flow direction of the mixed gas in the mineralization reactor is opposite to the conveying direction of the solid waste raw materials.

[0006] In some possible implementations, the mineralization reactor includes a reaction vessel, a rotary drive for driving the reaction vessel to rotate about its axial direction, a feed plate assembly mounted on the inner wall of the reaction vessel, and a tilt adjustment device for adjusting the tilt angle of the reaction vessel.

[0007] In some possible implementations, the air intake mechanism includes an air intake device connected to the mineralization reactor and a blower connected to the air intake device.

[0008] In some possible implementations, a monitoring component is also included for monitoring the flow rate, temperature, humidity and pressure of the mixed gas entering the mineralization reactor, the rotational speed and tilt angle of the mineralization reactor, the flow rate, temperature, humidity and pressure of the exhaust gas discharged from the mineralization reactor, and the amount of solid waste feed material. In some possible implementations, an exhaust device connected to the end of the mineralizing reactor away from the air inlet mechanism and an outlet device connected to the end of the mineralizing reactor away from the buffer silo are also included.

[0009] In some possible implementations, a control unit is also included, which is connected to the rotary drive, tilt adjustment, bleed air device, exhaust air device, and monitoring components, respectively.

[0010] In some possible implementations, a feed pipe is provided between the buffer silo and the mineralization reactor.

[0011] on the other hand: An application method based on the above-described continuous compact mineralization reaction system specifically refers to: Solid waste raw materials enter the feeding pipe through the buffer silo, and then enter the mineralization reactor. They move downwards step by step under the action of gravity and the lifting plate assembly inside the mineralization reactor. At the same time, the mixed gas enters the mineralization reactor through the air inlet mechanism and flows upwards. The residence time of solid waste materials in the mineralization reactor is controlled by adjusting the rotation speed and tilt angle of the reactor; the scraper plate assembly scrapes the solid waste materials as the reactor rotates. In the mineralization reactor, the gas and solid waste raw materials achieve full contact and reaction through countercurrent and the action of the lifting plate. After the reaction is completed, the solid waste material is discharged from the outlet device, and the waste gas generated after the reaction is discharged through the exhaust device.

[0012] In some possible implementations, the pressure inside the mineralization reactor is slightly positive; the temperature inside the mineralization reactor is 25~80℃; the filling rate of the solid waste material inside the mineralization reactor is 10%-40%; the residence time of the solid waste material inside the mineralization reactor is 0min-120min; and the flow rate of the mixed gas entering the mineralization reactor is 3L / min-30L / min.

[0013] In some possible implementations, during use, the monitoring component monitors in real time and transmits the monitoring data to the control unit, which then performs data analysis; if the limits are exceeded, it adjusts and controls accordingly, and issues warnings and shuts down when necessary.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention effectively enhances gas-solid mass transfer by incorporating a material lifting plate assembly within the mineralization reactor. Combined with the slightly positive pressure environment within the reactor, this increases the mineralization reaction rate by 30%-50%. Continuous operation increases the production capacity per unit time by 2-3 times compared to intermittent systems. Slightly positive pressure refers to a pressure range of 10 kPa-100 kPa.

[0015] This invention adapts to the mineralization needs of powders (such as ash and mineral powder) with different chemical compositions and physical properties by adjusting the flow rate of the mixed gas and the residence time of the solid waste raw materials, making it applicable to a wide range of scenarios. Through the cooperation of monitoring components and control units, this invention achieves automated regulation, increasing the pass rate of mineralized products to over 95%. Micro-positive pressure and temperature and humidity control ensure a stable reaction environment and uniform product quality. Simultaneously, the cooperation of the control unit and detection components proactively avoids risks such as abnormal gas pressure, uncontrolled rotation speed, material blockage, and material leakage, reducing the probability of equipment damage and safety accidents. This invention reduces the system footprint by more than 40%; energy consumption is reduced by 15%-20% compared to traditional systems. The exhaust gas generated by this invention is discharged after being treated by the exhaust device to reduce dust emissions, which meets environmental protection requirements. Furthermore, continuous production reduces the additional pollution caused by intermittent start-up and shutdown. Attached Figure Description

[0016] Figure 1 This is a system diagram of the present invention; Figure 2 This is a schematic diagram of the material feeding plate assembly and the mineralization reactor in this invention; Figure 3 This is a schematic diagram of the mineralization results in Example 1; Figure 4 This is a schematic diagram of the mineralization results in Example 2; Figure 5 This is a schematic diagram of the mineralization results in Example 3; The components include: 1. mineralization reactor; 11. reaction tank; 12. rotary drive device; 13. tilt adjustment device; 2. buffer silo; 3. air inlet mechanism; 4. monitoring components; 5. exhaust device; 6. outlet device; and 7. control unit. Detailed Implementation

[0017] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0018] The present invention will now be described in detail.

[0019] like Figures 1-2 As shown: A continuous compact mineralization reaction system includes a mineralization reactor 1 that rotates around its axis and can be tilted, a buffer silo 3 connected to one end of the mineralization reactor 1 for temporary storage of solid waste raw materials, and an air inlet mechanism connected to the other end of the mineralization reactor 1 for conveying mixed gas into the mineralization reactor 1; the flow direction of the mixed gas in the mineralization reactor 1 is opposite to the conveying direction of the solid waste raw materials. Specifically, the mixed gas is a mixed gas containing CO2; This invention effectively controls the residence time of solid waste materials in the mineralization reactor 1 by controlling the rotation speed of the mineralization reactor 1 around its axis and the tilt angle of its axis relative to the horizontal plane. Due to the tilt setting, the solid waste materials are discharged in stages under the action of gravity, which effectively improves the mineralization rate of the solid waste materials, making the mineralization rate of the solid waste materials above 90%.

[0020] In some possible implementations, in order to effectively realize the rotation and tilting of the mineralization reactor 1 about its axis and to make the rotation speed and tilt angle adjustable, the mineralization reactor 1 includes a reaction tank 11, a rotary drive device 12 for driving the reaction tank 11 to rotate about its axis, a feed plate assembly installed on the inner wall of the reaction tank 11, and a tilt adjustment device 13 for adjusting the tilt angle of the reaction tank 11. The lifting plate assembly is used to lift the solid waste material in the reaction tank 11 and gradually spread it on the inner wall of the reaction tank 11, increasing the contact time and contact area between the solid waste material and the mixed gas, and strengthening the mass transfer process of the mineralization reaction. Specifically, the material lifting plate assembly is in multiple sets and is arranged at equal intervals along the axial direction of the reaction tank 11, and the multiple sets of material lifting plate assemblies are evenly arranged around the circumference of the reaction tank 11. The reaction vessel 11 is cylindrical, with an exhaust port and a feed port at one end and a discharge port and an air inlet on the other side; the exhaust port is connected to the exhaust device 5, the feed port is connected to the buffer silo 3; the discharge port is connected to the outlet device 6, and the air inlet is connected to the air inlet mechanism.

[0021] In some possible implementations, in order to effectively transport the mixed gas and to meet the slight positive pressure inside the reaction tank 11 by controlling the flow rate of the mixed gas, the gas inlet mechanism includes a gas priming device connected to the mineralization reactor 1 and a blower connected to the gas priming device; the mineralization reactor 1 is provided with a gas inlet connected to the gas priming device. The blower delivers the mixed gas to the gas induced draft device, which regulates and controls the flow rate and temperature of the mixed gas before delivering it to the mineralization reactor 1.

[0022] In some possible implementations, the system also includes a monitoring component 4 for monitoring the flow rate, temperature, humidity and pressure of the mixed gas entering the mineralization reactor 1, the rotation speed and tilt angle of the mineralization reactor 1, the flow rate, temperature, humidity and pressure of the exhaust gas discharged from the mineralization reactor 1, and the amount of solid waste material fed; an exhaust device 5 connected to an exhaust port located at the end of the mineralization reactor 1 away from the air inlet mechanism; an outlet device 6 connected to the end of the mineralization reactor 1 away from the buffer silo 3; and a control unit 7 connected to the rotation drive device 12, the tilt adjustment device 13, the air intake device, the exhaust device 5, and the monitoring component 4, respectively. Specifically, the monitoring component 4 includes a gas flow meter for monitoring the flow rate of the mixed gas entering the mineralization reactor 1 and the exhaust gas discharged after the reaction, a temperature sensor for monitoring the temperature of the mixed gas entering the mineralization reactor 1 and the exhaust gas discharged after the reaction, a temperature and humidity sensor for monitoring the humidity of the mixed gas entering the mineralization reactor 1 and the exhaust gas discharged after the reaction, a pressure sensor for monitoring the pressure of the inlet and outlet of the mineralization reactor 1, a solid flow meter for monitoring the flow rate of solid waste raw materials, an angle sensor for monitoring the tilt angle of the mineralization reactor 1, and a speed sensor for monitoring the rotation speed of the mineralization reactor 1. The exhaust device 5 can be a bag filter dust collector, so that the exhaust gas is treated by dust collection before being discharged, reducing dust emissions, meeting environmental protection requirements, and reducing additional pollution caused by intermittent start-up and shutdown during continuous production.

[0023] During use, the monitoring component 4 will monitor the gas (mixed gas, exhaust gas) flow rate and temperature, the rotation speed of the reaction tank 11, the tilt angle of the reaction tank 11, the material feeding amount, the temperature and humidity of the exhaust port and the air inlet, and the pressure of the air inlet and the air outlet in real time, and transmit the monitoring data to the control unit 7. The control unit 7 will perform data comparison and analysis and process control to determine whether a safety fault has occurred. If a safety fault occurs, it will implement early warning and / or shutdown operations to avoid damage to the entire equipment.

[0024] By cooperating with the monitoring component 4 and the control unit 7, real-time monitoring and control can be achieved, which can avoid risks such as abnormal air pressure, speed runaway, material blockage, and material leakage in advance, reduce the probability of equipment damage and safety accidents, and at the same time increase the qualification rate of mineralized products to more than 95%. By controlling the micro-positive pressure and temperature and humidity within the mineralization reactor 1, the reaction environment within the reaction tank 11 is kept stable, and the product quality is kept uniform.

[0025] In some possible implementations, a feeding pipe 8 is provided between the buffer silo 3 and the mineralization reactor 1, thereby effectively conveying the solid waste in the buffer silo 3 to the mineralization reactor 1.

[0026] The rotary drive device 12 and the tilt adjustment device 13 in this invention are existing technologies, and their internal structures will not be described in detail.

[0027] on the other hand: An application method based on the above-described continuous compact mineralization reaction system specifically refers to: Solid waste material enters the feed pipe 8 through the buffer silo 3, and then enters the mineralization reactor 1. Since the mineralization reactor 1 is set at an inclination, the solid waste material will move from top to bottom step by step under the action of gravity and with the help of the lifting plate assembly in the mineralization reactor 1. At the same time, the mixed gas enters the mineralization reactor 1 through the air inlet mechanism and flows from bottom to top. The residence time of solid waste raw materials in the mineralization reactor 1 is controlled by controlling the rotation speed and tilt angle of the mineralization reactor 1; the scraper plate assembly rotates with the mineralization reactor 1 to scrape the solid waste raw materials. In the mineralization reactor 1, the gas and solid waste raw materials are fully contacted and reacted through countercurrent and the lifting plate 14. After the reaction is completed, the solid waste material is discharged from the outlet device 6, and the waste gas generated after the reaction is discharged through the exhaust device 5.

[0028] In some possible implementations, the pressure inside the mineralization reactor 1 is slightly positive; the temperature inside the mineralization reactor is 25~80℃; the filling rate of the solid waste raw material in the mineralization reactor 1 is 10%-40%; the residence time of the solid waste raw material in the mineralization reactor 1 is 0min-120min; and the flow rate of the mixed gas entering the mineralization reactor 1 is 3L / min-30L / min. This setting can meet the mineralization needs of powders with different chemical compositions and physical properties, and has a wide range of applications. During use, the residence time and the flow rate of the mixed gas can be adjusted according to the usage requirements.

[0029] In some possible implementations, during use, the monitoring component 4 monitors in real time and transmits the monitoring data to the control unit 7, which then performs data analysis; if the limits are exceeded, it adjusts and controls accordingly, and issues warnings and shuts down when necessary.

[0030] Example 1: Based on the aforementioned continuous compact mineralization reaction system and application method, in this embodiment, a mixed gas containing CO2 is introduced into the mineralization reactor 1 via a blower and an air intake device at a flow rate of 3 L / min. The rotation drive device 12 and the tilt adjustment device 13 ensure that the solid waste material resides in the mineralization reactor 1 for 120 min. The solid waste material is then transported to the feed pipe 8 through the buffer silo 3, ensuring a filling rate of 25%. The mineralization reactor 1 achieves a mineralization rate of over 90% for the solid waste material. Figure 3 As shown, the curve represents the mineralization rate from 0 to 120 min.

[0031] Example 2: Based on the above-mentioned continuous compact mineralization reaction system and application methods, such as Figure 4 As shown, a CO2-containing mixed gas is introduced into the mineralization reactor 1 via a blower and an air intake device at a flow rate of 3 L / min. The rotation drive device 12 and the reactor tilt adjustment device 13 ensure that the solid waste material has a residence time of 20 min within the mineralization reactor 1. The material is then conveyed to the feed pipe 8 through the buffer silo 3, ensuring a solid waste material filling rate of 25%. The mineralization reactor 1 achieves a mineralization rate of over 90% for the solid waste material. Figure 4 As shown, the curve represents the mineralization rate from 0 to 20 minutes.

[0032] Example 3: Based on the above-mentioned continuous compact mineralization reaction system and application methods, such as Figure 5As shown, a CO2-containing mixed gas is introduced into the mineralization reactor 1 via a blower and an air intake device at a flow rate of 10 L / min. The rotation drive device 12 and the reactor tilt adjustment device 13 ensure that the solid waste material has a residence time of 60 min within the mineralization reactor 1. The material is then conveyed to the feed pipe 8 through the buffer silo 3, ensuring a solid waste material filling rate of 25%. The mineralization reactor 1 achieves a mineralization rate of over 90% for the solid waste material. Figure 5 As shown, the curve represents the mineralization rate from 0 to 20 minutes.

[0033] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A continuous, compact mineralization reaction system, characterized in that, It includes a mineralization reactor that can rotate and tilt around its axis, a buffer silo connected to one end of the mineralization reactor for temporary storage of solid waste raw materials, and an air inlet mechanism connected to the other end of the mineralization reactor for conveying mixed gas into the mineralization reactor; the flow direction of the mixed gas in the mineralization reactor is opposite to the conveying direction of the solid waste raw materials.

2. The continuous compact mineralization reaction system according to claim 1, characterized in that, The mineralization reactor includes a reaction vessel, a rotary drive device for driving the reaction vessel to rotate about its axial direction, a feed plate assembly installed on the inner wall of the reaction vessel, and a tilt adjustment device for adjusting the tilt angle of the reaction vessel.

3. The continuous compact mineralization reaction system according to claim 2, characterized in that, The air intake mechanism includes an air intake device connected to the mineralization reactor and a blower connected to the air intake device.

4. The continuous compact mineralization reaction system according to claim 3, characterized in that, It also includes a monitoring component for monitoring the flow rate, temperature, humidity and pressure of the mixed gas entering the mineralization reactor, the rotation speed and tilt angle of the mineralization reactor, the flow rate, temperature, humidity and pressure of the exhaust gas discharged from the mineralization reactor, and the amount of solid waste feed.

5. A continuous compact mineralization reaction system according to claim 4, characterized in that, It also includes an exhaust device connected to the end of the mineralization reactor away from the air inlet mechanism, and an outlet device connected to the end of the mineralization reactor away from the buffer silo.

6. A continuous, compact mineralization reaction system according to claim 5, characterized in that, It also includes control units that are connected to the rotary drive, tilt adjustment, bleed air device, exhaust air device, and monitoring components, respectively.

7. A continuous, compact mineralization reaction system according to any one of claims 1-6, characterized in that, A feed pipe is provided between the buffer silo and the mineralization reactor.

8. An application method based on the continuous compact mineralization reaction system according to any one of claims 1-7, characterized in that, Specifically, it refers to: Solid waste raw materials enter the feeding pipe through the buffer silo, and then enter the mineralization reactor. They move downwards step by step under the action of gravity and the lifting plate assembly inside the mineralization reactor. At the same time, the mixed gas enters the mineralization reactor through the air inlet mechanism and flows upwards. The residence time of solid waste materials in the mineralization reactor is controlled by adjusting the rotation speed and tilt angle of the reactor; the scraper plate assembly scrapes the solid waste materials as the reactor rotates. In the mineralization reactor, the gas and solid waste raw materials achieve full contact and reaction through countercurrent and the action of the lifting plate. After the reaction is completed, the solid waste material is discharged from the outlet device, and the waste gas generated after the reaction is discharged through the exhaust device.

9. The application method of the continuous compact mineralization reaction system according to claim 8, characterized in that, The pressure inside the mineralization reactor is slightly positive; the temperature inside the mineralization reactor is 25~80℃; the filling rate of the solid waste material in the mineralization reactor is 10%-40%; the residence time of the solid waste material in the mineralization reactor is 0min-120min; and the flow rate of the mixed gas entering the mineralization reactor is 3L / min-30L / min.

10. The application method of the continuous compact mineralization reaction system according to claim 9, characterized in that, During use, the monitoring component monitors in real time and transmits the monitoring data to the control unit, which then performs data analysis. If the limits are exceeded, the control unit will adjust and control the system, and issue warnings and shut down the system if necessary.

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