A disc-type granulation carbonization temperature control integrated device

Abstract

This invention relates to the field of civil engineering testing technology, and more particularly to an integrated device for disc-type granulation and carbonization temperature control, comprising: a heating vessel, including a heating jacket, a granulation turntable, and a water inlet device; a power unit, including a motor, a transmission device, and a rotating rod for connecting the granulation turntable; a support device for supporting and fixing the heating vessel body and the power unit as a whole; a speed and time controller connected to the power unit; a temperature and time controller connected to the heating vessel; a gas storage tank for supplying carbon dioxide gas to the heating vessel; and a gas pump for transporting carbon dioxide gas from the carbon dioxide storage tank to the heating vessel. This invention provides a certain high-temperature environment and initial granulation shaping for the carbonization reaction through the heating vessel, and introduces carbon dioxide gas at different pressures into the heating vessel to participate in carbonization by adjusting the gas pump, thus achieving integrated carbonization and heating for the preparation of solid waste granules.

Description

Technical Field

[0001] This invention relates to the field of civil engineering testing technology, and in particular to an integrated device for disc-type granulation, carbonization, and temperature control. Background Technology

[0002] For high-calcium and siliceous-aluminate solid wastes, some mature processes have been developed for resource recovery. For example, carbide slag is used as a cement additive, and fly ash and slag are used as siliceous raw materials in building materials. However, these resource recovery applications are all based on sintering processes, which are not conducive to achieving the current "dual carbon" (carbon dioxide, carbon sequestration, and carbon emission) targets. Therefore, there is an urgent need to develop new green building solid waste resource recovery technologies to promote harmonious development between humans and nature.

[0003] High-calcium solid waste is mainly composed of calcium hydroxide, which has high mineralization activity as a mineralization raw material. Other siliceous and aluminous solid wastes, such as fly ash, are mainly composed of silicates and aluminates, which do not have mineralization activity, but can be used as raw materials for gel materials. Under certain temperature and pressure conditions, the appropriate introduction of CO2 can mineralize calcium ions into calcium carbonate, while silicon elements form silicon dioxide. This not only ensures the good structural strength of the matrix but also absorbs a large amount of CO2, aligning with the low-carbon and green production concept. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of existing technologies in the sintering granulation process, which requires high energy consumption and generates significant pollution. Therefore, the present invention provides an integrated carbonization and heating disc granulation device to overcome the above-mentioned shortcomings.

[0005] The specific technical solution adopted in this invention is as follows:

[0006] This invention provides an integrated disc-type granulation and carbonization temperature control device, the device comprising:

[0007] The heating vessel includes an external heating jacket for regulating the temperature of the inner cavity, a granulation turntable for granulation inside the inner cavity, and a water inlet device that communicates with the inner cavity.

[0008] The power unit includes a transmission device connected to the output shaft of the motor and a rotating rod that can transmit the rotational power of the transmission device to the granulation turntable.

[0009] A support device is used to support and fix the heating vessel and the power unit as a whole;

[0010] A speed-time controller is used to control the motor speed of the power unit;

[0011] Temperature and time controller, used for feedback regulation of the temperature inside the heating vessel cavity;

[0012] A gas storage tank is used to supply carbon dioxide gas to the inner cavity of the heating vessel via a gas pump.

[0013] Preferably, the heating vessel is an integral structure with a sealed inner cavity, consisting of a vessel body and a vessel lid, with the vessel lid being detachably installed on the top of the vessel body.

[0014] Furthermore, the water inlet device includes two pairs of independent water inlet pipes and nozzles; one end of the water inlet pipe passes through the kettle lid, extends into the inner cavity and is connected to the nozzle, and the other end is located outside the heating kettle; the water inlet pipe located outside the heating kettle is equipped with a valve that can control the opening and closing of the pipeline; the spraying area of ​​the nozzle has a circular cross-section.

[0015] Furthermore, a temperature sensor sleeve is provided through the lid of the vessel, and a temperature sensor is inserted inside the temperature sensor sleeve; one end of the temperature sensor is located in the inner cavity of the heating vessel, and the other end is connected to the temperature and time controller circuit.

[0016] Furthermore, the kettle lid is equipped with a first digital display pressure sensor for real-time measurement and display of the air pressure inside the heating kettle cavity; the heating kettle cavity is equipped with a granulation baffle for preventing the raw material from moving synchronously with the granulation turntable, and the top of the granulation baffle is installed inside the kettle lid.

[0017] Furthermore, the vessel lid is provided with a through-hole air inlet pipe and an air outlet pipe; one end of the air inlet pipe is connected to the inner cavity of the heating vessel, and the other end is connected to the air pump; one end of the air outlet pipe is connected to the inner cavity of the heating vessel, and the other end is located outside the heating vessel; the air inlet pipe and the air outlet pipe located outside the heating vessel are respectively provided with valves that can control the opening and closing of the pipes.

[0018] Furthermore, a pressure-holding valve is provided on the air inlet pipe located outside the heating vessel.

[0019] Preferably, the outlet of the gas storage tank is connected to a second digital pressure sensor.

[0020] Preferably, one end of the transmission device is connected to the output shaft of the motor, and the other end is connected to the end of the rotating rod. The transmission device is fixed to the reactor body. The other end of the rotating rod is fixed to the bottom of the granulation turntable and can drive the granulation turntable to rotate.

[0021] Preferably, the support device includes a support frame, a rotating plate, a rotating shaft, a connecting rod, and an arc track; the rotating plate is fixedly connected to the power device and is mounted on the support frame via the rotating shaft; the support frame is also provided with an arc track; one end of the connecting rod is fixed to the rotating plate, and the other end is slidably connected to the arc track; by adjusting the rotation direction of the connecting rod, the rotating plate rotates around the rotating shaft to change the tilt angle of the heating vessel relative to the horizontal plane.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] (1) The present invention provides a certain high temperature environment and initial granulation for carbonization reaction by heating the kettle, and introduces carbon dioxide gas at different pressures into the heating kettle to participate in carbonization by adjusting the gas pump, thereby realizing the integrated preparation of solid waste granules by carbonization and heating.

[0024] (2) The carbonization reaction consumes less energy and does not emit pollutants during the reaction. Furthermore, the solid waste particles after carbonization have higher structural strength and fewer internal defects, which effectively improves the stability of the prepared solid waste particles.

[0025] (3) The present invention can effectively improve the space utilization rate inside the heating vessel and avoid occupying valuable space inside the vessel. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the device according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram showing the connection between the heating vessel and the power unit in the device of this embodiment of the invention.

[0028] Figure 3 This is a schematic diagram of the structure of the vessel lid in the device of this embodiment of the invention.

[0029] The components include: vessel body 10, vessel cover 20, heating vessel 100, heating jacket 101, granulation turntable 102, water inlet device 103, temperature sensor sleeve 104, temperature sensor 105, air inlet pipe 1061, air outlet pipe 1062, valve 107, pressure holding valve 108, first digital display pressure sensor 109, granulation baffle 110, temperature and time controller 200, air storage tank 300, second digital display pressure sensor 301, air pump 400, speed and time controller 500, motor 601, transmission device 602, rotating rod 603, water inlet pipe 1031, nozzle 1032, support frame 701, rotating plate 702, rotating shaft 703, connecting rod 704, and arc rail 705. Detailed Implementation

[0030] The present invention will be further described and illustrated below with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly, provided that there is no mutual conflict.

[0031] Example 1

[0032] like Figures 1-3As shown, this embodiment provides an integrated device for disc-type granulation and carbonization temperature control. The device mainly includes a heating kettle 100, an air pump 400, a carbon dioxide storage tank 300, and a power unit. The air pump 400 can connect or disconnect the heating kettle 100 and the storage tank 300, thereby controlling the start time, duration, and pressure of carbon dioxide gas participating in the reaction, and enabling the exploration of various reaction conditions before, during, and after granulation under different gas pressures.

[0033] In this embodiment, the heating vessel 100 has a sealed inner cavity, including a vessel body 10 and a vessel lid 20. Flanges for fixing the lid 20 and the top port edge of the vessel body 10 are provided. The lid 20 can be opened and can be sealed and fixed to the vessel body 10 to form a closed reaction vessel. The vessel body 10 contains a granulation turntable 102 for initial granulation and a granulation baffle 110 for preventing the raw material from moving synchronously with the granulation turntable. A heating sleeve 101 is fitted onto the outer wall of the heating vessel body 10 to provide a temperature environment for the reaction. A water inlet device 103, an air inlet pipe 1061, an air outlet pipe 1062, a first digital display pressure sensor 109, and a temperature and time controller 200 are connected to the vessel lid 20 of the heating vessel 100.

[0034] Specifically, the water inlet device 103 includes two pairs of independent water inlet pipes 1031 and nozzles 1032. One end of the water inlet pipe 1031 penetrates the vessel cover 20, extends into the inner cavity, and is connected to the nozzle 1032; the other end is located outside the heating vessel 100. A valve 107 is provided on the water inlet pipe 1031 located outside the heating vessel 100 to control the opening and closing of the pipeline. The spray area of ​​the nozzle 1032 has a circular cross-section. This invention places the water inlet device 103 on top of the heating vessel, avoiding occupying valuable internal space within the heating vessel 100. When granulation begins, water can be evenly sprayed into the vessel through the water inlet device 103 to mix with the raw materials.

[0035] Specifically, one end of the inlet pipe 1061 is connected to the inner cavity of the heating vessel 100, and the other end is connected to the air pump 400. One end of the outlet pipe 1062 is connected to the inner cavity of the heating vessel 100, and the other end is located outside the heating vessel 100. The inlet pipe 1061 and the outlet pipe 1062 are used to introduce carbon dioxide gas during the reaction and to reduce the internal pressure of the heating vessel 100 after the reaction. Valves 107 that can control the opening and closing of the pipes are respectively provided on the inlet pipe 1061 and the outlet pipe 1062 located outside the heating vessel 100. A pressure holding valve 108 is provided on the inlet pipe 1061 located outside the heating vessel 100, which can monitor the pressure of the heating vessel 100 in real time. When the internal pressure is lower than a certain set value, the pressure holding valve 108 will automatically open to supply gas, and when the pressure is equal to the set value, the pressure holding valve 108 will automatically close to achieve the pressure holding function. The first digital display pressure sensor 109 can measure the internal pressure of the heating vessel 100 in real time.

[0036] Specifically, a temperature sensor sleeve 104 is provided through the lid 20, and a temperature sensor 105 is inserted inside the sleeve 104. One end of the temperature sensor 105 is located inside the heating vessel 100, and the other end is connected to the temperature-time controller 200. The temperature-time controller 200 is connected to a power source and can control the entire granulation process by setting a certain rotation speed and duration. By connecting the temperature sensor 105 inside the sleeve 104 to the temperature-time controller 200, the internal temperature of the heating vessel 100 can be monitored in real time, and the environment of the entire heating vessel 100 can be controlled by setting a certain temperature and heating time.

[0037] In this embodiment, the power unit includes a motor 601, a transmission device 602, and a rotating rod 603, which provide power for the granulation process and transmit the power to the granulation turntable 102. One end of the transmission device 602 is connected to the motor 601, and the other end is combined with the rotating rod 603 and welded to the vessel body 10 to form a whole, for transmitting power. One end of the rotating rod 603 is combined with the transmission device 602, and the other end extends perpendicularly to the bottom surface of the vessel body 10 into the heating vessel 100 and is connected to the granulation turntable 102, for transmitting power to the granulation turntable 102.

[0038] In this embodiment, the support device includes a support frame 701, a rotating plate 702, a rotating shaft 703, a connecting rod 704, and an arc-shaped rail 705, used to support and fix the heating vessel 100 and the power unit as a whole. The rotating plate 702 is fixedly connected to the power unit and is mounted on the support frame 701 via the rotating shaft 703. The support frame 701 is also provided with an arc-shaped rail 705. One end of the connecting rod 704 is fixed to the rotating plate 702, and the other end is slidably connected to the arc-shaped rail 705. By adjusting the rotation direction of the connecting rod 704, the rotating plate 702 rotates around the rotating shaft 703, thereby changing the tilt angle of the heating vessel 100 relative to the horizontal plane.

[0039] In this embodiment, the outlet of the gas storage tank 300 is connected to a second digital display pressure sensor 301 and an openable / closable vent valve 107. The second digital display pressure sensor 301 can monitor the carbon dioxide content inside the gas storage tank 300 in real time to replenish carbon dioxide in a timely manner. The openable / closable vent valve 107 can control the flow of carbon dioxide into the heating vessel 100. It can be understood that, in addition to achieving integrated carbonization and heating disc granulation, the entire device can also use the heating vessel 100 alone for direct carbonization of specimens.

[0040] In this embodiment, the outlet pipe of the air pump 400 is connected to the pressure holding valve 108, and the inlet pipe of the air pump 400 is connected to the gas storage tank 300. By adjusting the pressure valve of the air pump 400, the gas pressure of carbon dioxide in the carbonization reaction inside the heating vessel 100 is controlled. Furthermore, the outlet pipe of the air pump 400 is made of a high-temperature resistant and low-thermal-conductivity material to prevent heat conduction from affecting the air pump 400 when the temperature of the heating vessel 100 is too high.

[0041] Application Example 1

[0042] This application example provides a method for preparing recycled solid waste granules using the apparatus of Example 1, comprising the following steps:

[0043] (S.1) The solid waste to be processed is sent to a 60°C oven and dried to constant weight. The dried solid waste is sent to a crusher for crushing. The crushed solid waste powder is subjected to XRD analysis to obtain the calcium content in the solid waste powder. 100 parts of the solid waste powder are taken by weight and calcium oxide is added to the solid waste powder to make the effective calcium content ≥30%. The dry powder raw material is poured into the granulation turntable 102.

[0044] (S.2) Turn on the power of the speed and time controller 500. Taking the granulation turntable 102 with a radius of 0.6m as an example, set the speed to 17r / min and the time to 30min.

[0045] (S.3) After 5 minutes, the dry powder is mixed evenly, and 30% wt of water is added by spraying through the water inlet device 103.

[0046] (S.4) After the above granulation initial forming, the temperature in the reactor 100 is set to 65°C. Carbon dioxide is transported from the gas storage tank 300 to the reactor 100 through the gas pump 400 along the gas inlet pipe 1061 until 0.35MPa carbon dioxide gas is introduced into it for carbonization reaction for 12 hours. After the reaction is completed, the carbon dioxide gas is discharged along the gas outlet pipe 1062. The reactor lid 20 is opened to obtain carbonized solid waste granules.

[0047] (S.5) Dry the carbonized solid waste particles at 60°C to constant weight to obtain the finished product.

[0048] This invention provides a certain high-temperature environment for the carbonization reaction and initial granulation by heating the kettle, and introduces carbon dioxide gas at different pressures into the heating kettle to participate in carbonization by adjusting the gas pump, thereby realizing the integrated preparation of solid waste granules by carbonization and heating.

[0049] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all technical solutions obtained through equivalent substitution or transformation fall within the protection scope of the present invention.

Claims

1. A disc-type granulation carbonization temperature control integrated device, characterized in that, include: The heating vessel (100) includes a heating jacket (101) disposed on the outside for regulating the temperature of the inner cavity, a granulation turntable (102) disposed in the inner cavity for granulation, and a water inlet device (103) that can communicate with the inner cavity. The power unit includes a transmission device (602) connected to the output shaft of the motor (601) and a rotating rod (603) that can transmit the rotational power of the transmission device (602) to the granulation turntable (102). A support device is used to support and fix the heating vessel (100) and the power unit as a whole; A speed-time controller (500) is used to control the speed of the motor (601) of the power unit; Temperature and time controller (200) is used to provide feedback and regulate the temperature inside the heating vessel (100); A gas storage tank (300) is used to supply carbon dioxide gas to the inner cavity of the heating vessel (100) via a gas pump (400); One end of the transmission device (602) is connected to the output shaft of the motor (601), and the other end is connected to the end of the rotating rod (603). The transmission device (602) is fixed on the reactor body (10). The other end of the rotating rod (603) is fixed to the bottom of the granulation turntable (102) and can drive the granulation turntable (102) to rotate. The support device includes a support frame (701), a rotating plate (702), a rotating shaft (703), a connecting rod (704), and an arc rail (705); the rotating plate (702) is fixedly connected to the power device and is mounted on the support frame (701) via the rotating shaft (703); the support frame (701) is also provided with an arc rail (705); one end of the connecting rod (704) is fixed to the rotating plate (702), and the other end is slidably connected to the arc rail (705); by adjusting the rotation direction of the connecting rod (704), the rotating plate (702) rotates around the rotating shaft (703) to change the tilt angle of the heating vessel (100) relative to the horizontal plane.

2. The integrated disc-type granulation, carbonization, and temperature control device according to claim 1, characterized in that, The heating vessel (100) is an integral structure with a sealed inner cavity, consisting of a vessel body (10) and a vessel lid (20). The vessel lid (20) is detachably installed on the top of the vessel body (10).

3. The integrated disc-type granulation, carbonization, and temperature control device according to claim 2, characterized in that, The water inlet device (103) includes two pairs of independent water inlet pipes (1031) and nozzles (1032); one end of the water inlet pipe (1031) passes through the lid (20) and extends into the inner cavity and is connected to the nozzle (1032), and the other end is located outside the heating vessel (100); the water inlet pipe (1031) located outside the heating vessel (100) is provided with a valve (107) that can control the opening and closing of the pipeline; the spraying area of ​​the nozzle (1032) has a circular cross-section.

4. The integrated disc-type granulation, carbonization, and temperature control device according to claim 2, characterized in that, A temperature sensor sleeve (104) is provided through the lid (20), and a temperature sensor (105) is inserted inside the temperature sensor sleeve (104); one end of the temperature sensor (105) is located in the inner cavity of the heating vessel (100), and the other end is connected to the temperature and time controller (200) circuit.

5. The integrated disc-type granulation, carbonization, and temperature control device according to claim 2, characterized in that, The kettle lid (20) is provided with a first digital display pressure sensor (109) for real-time measurement and display of the air pressure inside the heating kettle (100); the heating kettle (100) is provided with a granulation baffle (110) for preventing the raw material from moving synchronously with the granulation turntable (102), and the top of the granulation baffle (110) is installed inside the kettle lid (20).

6. The integrated disc-type granulation, carbonization, and temperature control device according to claim 2, characterized in that, The lid (20) is provided with a through air inlet pipe (1061) and an air outlet pipe (1062); one end of the air inlet pipe (1061) is connected to the inner cavity of the heating vessel (100), and the other end is connected to the air pump (400); one end of the air outlet pipe (1062) is connected to the inner cavity of the heating vessel (100), and the other end is located outside the heating vessel (100); the air inlet pipe (1061) and the air outlet pipe (1062) located outside the heating vessel (100) are respectively provided with valves (107) that can control the opening and closing of the pipes.

7. The integrated disc-type granulation, carbonization, and temperature control device according to claim 6, characterized in that, A pressure-holding valve (108) is provided on the air inlet pipe (1061) located outside the heating vessel (100).

8. The integrated disc-type granulation, carbonization, and temperature control device according to claim 1, characterized in that, The outlet of the gas storage tank (300) is connected to a second digital display pressure sensor (301).

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