High-temperature slag drying device
By designing a high-temperature slag drying device, and utilizing cast iron electric heating components and a spiral agitator, the problem of material volatilization and drying in the later stages of pyrolysis reactors was solved, thereby improving production efficiency and energy saving.
Patent Information
- Application Number
- CN202323440555.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-15
AI Technical Summary
In the later stages of the existing pyrolysis reactor, the materials are difficult to volatilize and the ash residue is not easy to dry, resulting in low reactor utilization, large heat loss and low production efficiency.
The high-temperature slag drying device includes a shell, a heating component, and a stirring component. It uses a cast iron electric heating component for heating, combined with a ribbon agitator and a slag discharge auger component to achieve high-temperature drying and rapid slag discharge.
It improves the working efficiency of the reactor, shortens the reaction time, reduces heat loss, and achieves the effects of rapid slag drying and energy saving and environmental protection.
Smart Images
Figure CN222313077U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-temperature dry slag, in particular to a high-temperature dry slag device. Background Art
[0002] In the production process of catalytic cracking of waste plastics to produce oil, the oil yield and oil quality are best when the reaction temperature of catalytic cracking is controlled between 400 and 450°C. If the reaction temperature of catalytic cracking is too high, the oil yield decreases and the gas yield increases, and coking is likely to occur.
[0003] At present, pyrolysis reactors usually use molten salt heating. In this type of pyrolysis reactor, some substances in the materials are not easy to volatilize in the later stage of the reaction, and the ash is not easy to dry. Moreover, as the reaction proceeds, the volume of the material in the reactor will be reduced to less than 1 / 3. At this time, since the volume of the reactor is too large relative to the volume of the material, the molten salt temperature is not easy to increase, and the utilization rate of the reactor is also reduced. In addition, the heat energy loss of the reactor during the long-term heating process is also large, which prolongs the reaction time and reduces production efficiency.
[0004] Therefore, a new technology is urgently needed to solve the above problems. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art, the present application provides a high-temperature slag drying device, which has the advantages of fast heating speed, high slag drying efficiency, energy saving and environmental protection.
[0006] To achieve the above-mentioned purpose, the utility model provides a high-temperature dry slag device. The high-temperature dry slag device includes a shell, a heating component and a stirring component. The heating component is arranged outside the shell. At least part of the stirring component is arranged inside the shell. The shell is provided with a feed inlet, a slag discharge port and an air outlet, and the feed inlet is connected to the slag discharge port of the reactor. The stirring component includes a stirring power system, a stirring shaft connected to the stirring power system and a screw-belt stirring paddle arranged on the stirring shaft.
[0007] Preferably, the heating element is a cast iron electric heating element.
[0008] Preferably, a temperature measuring element and a temperature control system are provided on the heating component, and the temperature measuring element and the temperature control system are connected.
[0009] Preferably, the temperature measuring element is arranged on the inner wall of the shell.
[0010] Preferably, the high-temperature dry slag device further comprises a slag discharge auger assembly, and at least part of the slag discharge auger assembly is arranged on one side of the shell body close to the slag discharge port.
[0011] Preferably, the slag discharge auger assembly includes a slag discharge power system and a slag discharge auger connected to the slag discharge power system, the slag discharge auger is arranged in the shell, and the end of the slag discharge auger away from the slag discharge power system is arranged near the slag discharge port.
[0012] Preferably, the high-temperature dry slag device further comprises a slag discharge valve arranged at the slag discharge port.
[0013] Preferably, a check valve is provided on the gas outlet.
[0014] Preferably, the high-temperature dry slag device further comprises an oil and gas recovery device, and the gas outlet is connected to the oil and gas recovery device.
[0015] Preferably, the high-temperature dry slag device further comprises a humidity detection element, and the humidity detection element is arranged on the inner wall of the shell.
[0016] Preferably, the lead of the helical ribbon stirring paddle is between 60% and 100% of the inner diameter of the shell, and the width of the helical ribbon stirring paddle is between 8% and 15% of the inner diameter of the shell.
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] First of all, the high-temperature slag drying device provided by the utility model is used in conjunction with a reactor. The ash slag that is difficult to volatilize and dry in the later stage of pyrolysis of the reactor is discharged into the high-temperature slag drying device for high-temperature drying, which can solve the problem of low efficiency of the reactor working alone and greatly improve the overall production efficiency.
[0019] Secondly, the high-temperature slag drying device adopts a high-temperature resistant cast iron heater as the heat source of the slag drying machine, which can heat the high-temperature slag drying device alone, with high heating temperature and fast slag drying speed.
[0020] In addition, the volume of the high-temperature dry slag device can be determined solely according to the volume of the dry slag, which has a better heating effect and is more conducive to energy conservation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The present application may be better understood by describing the embodiments of the present application in conjunction with the accompanying drawings, in which:
[0022] Figure 1 This is a schematic structural diagram of a high-temperature dry slag device and a reactor in one embodiment of the present application;
[0023] Figure 2 For Figure 1 A schematic structural diagram of a high temperature dry slag device in the illustrated embodiment; and
[0024] Figure 3 For Figure 2 A schematic side view of a high temperature dry slag device in the illustrated embodiment.
[0025] Description of Figure Numbers:
[0026] 100. Reactor; 200. High-temperature dry slag device; 210. Shell; 212. Feed inlet; 214. Slag discharge outlet; 216. Air outlet; 220. Heating component; 222. Temperature measuring element; 230. Stirring component; 232. Stirring power system; 234. Stirring shaft; 236. Ribbon stirring paddle; 240. Slag discharge auger component; 242. Slag discharge power system; 244. Slag discharge auger; 246. Slag discharge valve. DETAILED DESCRIPTION
[0027] Unless otherwise defined, the technical terms or scientific terms used in this specification and claims shall have the common meanings understood by persons having ordinary skills in the technical field to which the present invention belongs.
[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0029] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.
[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] This embodiment relates to a Figures 1 to 3 The high temperature dry slag device 200 is shown for the reaction kettle 100.
[0033] The high temperature dry slag device 200 includes a shell 210, a heating component 220 and a stirring component 230. The heating component 220 is arranged outside the shell 210. At least part of the stirring component 230 is arranged inside the shell 210. The shell 210 is provided with a feed port 212, a slag discharge port 214 and an air outlet 216, and the feed port 212 is connected to the slag discharge port of the reactor 100. The stirring component 230 includes a stirring power system 232, a stirring shaft 234 connected to the stirring power system 232, and a spiral belt stirring paddle 236 arranged on the stirring shaft 234. The heating component 220 can be a cast iron electric heating component. The cast iron electric heating component has the characteristics of high temperature resistance, fast heating speed and long service life. The high temperature dry slag device 200 used for the reactor 100 uses the cast iron electric heating component as a heat source, and the operating temperature can reach between 500-700°C.
[0034] The high-temperature slag drying device 200 used for the reactor 100 can be used in conjunction with the upper-stage reactor 100. That is, the ash slag that needs high temperature to dry in the later stage of pyrolysis of the reactor 100 is discharged into the high-temperature slag drying device 200 for separate high-temperature drying, and the emptied upper-stage reactor 100 can be fed with new materials, thereby improving the working efficiency of the reactor 100. Moreover, since the volume of the material in the later stage of the reaction is relatively small, the volume of the high-temperature slag drying device 200 can also be reduced accordingly. Such a high-temperature slag drying device 200 has the advantages of easy heating, fast slag drying speed, and more energy-saving and environmental protection. Figures 1 to 3 The volume of the high-temperature dry slag device 200 used for the reactor 100 is only less than 1 / 3 of the volume of the reactor 100 .
[0035] In some embodiments, a temperature measuring element 222 and a temperature control system are provided on the heating component 220, and the temperature measuring element 222 and the temperature control system are connected. The temperature measuring element 222 can be provided on the inner wall of the housing 210. By providing the temperature measuring element 222 and the temperature control system, the heating temperature of the heating component 220 can be made more accurate and controllable.
[0036] In some embodiments, the high temperature slag drying device 200 further includes a slag discharge auger assembly 240. The slag discharge auger assembly 240 can help discharge the dried material from the high temperature slag drying device 200. At least part of the slag discharge auger assembly 240 is disposed in a side of the housing 210 near the slag discharge port 214. In some specific embodiments, the slag discharge auger assembly 240 may include a slag discharge power system 242 and a slag discharge auger 244 connected to the slag discharge power system 242, the slag discharge auger 244 is disposed in the housing 210, and one end of the slag discharge auger 244 away from the slag discharge power system 242 is disposed near the slag discharge port 214.
[0037] In some embodiments, the high temperature slag drying device 200 further includes a slag discharge valve 246 disposed at the slag discharge port 214. The slag discharge valve 246 can be used to control the discharge of materials.
[0038] In some embodiments, a check valve is provided on the gas outlet 216. The check valve can be used to control the flow direction of the oil gas and other volatile gases dried by the high-temperature slag drying device 200.
[0039] In some embodiments, the high-temperature dry slag device 200 for the reactor 100 further includes an oil and gas recovery device, and the gas outlet 216 is connected to the oil and gas recovery device.
[0040] In some embodiments, the high temperature slag drying device 200 for the reactor 100 further includes a humidity detection element, which is disposed on the inner wall of the shell 210. The humidity detection element can be connected to the slag discharge valve 246 and / or the cast iron heating component 220. The humidity detection element can help control the drying process.
[0041] Next, combine Figures 1 to 3 The illustrated embodiment briefly describes the working method of the high-temperature slag drying device 200 used in the reaction kettle 100 .
[0042] First, the material enters the high-temperature slag drying device 200 through the feed port 212 set in the shell 210. At this time, the stirring power system 232 drives the screw-belt stirring paddle 236 to rotate through the stirring shaft 234, and the material is driven by the screw-belt stirring paddle 236, thereby realizing the stirring of the material and the slag discharge pushing. At the same time, the heating component 220 heats the shell 210, so that the material is heated, and the oil gas and other volatile gases in the material are volatilized by heat and discharged from the high-temperature slag drying device 200 through the air outlet 216 on the shell 210, thereby realizing the drying of the material. The dried material is pushed to the vicinity of the slag discharge port 214 by the screw-belt stirring paddle 236, and the slag discharge auger component 240 assists in discharging the dried material from the slag discharge port 214 out of the high-temperature slag drying device 200.
[0043] In a specific embodiment, the lead of the screw-belt stirring paddle 236 is between 60% and 100% of the inner diameter of the high-temperature dry slag device shell 210. If the lead is too small, the slag discharge speed is slow, and if the lead is too large, the propulsion speed is too fast and is not conducive to stirring; the width of the screw-belt stirring paddle 236 is between 8% and 15% of the inner diameter of the high-temperature dry slag device shell. If it is too narrow, the thrust is small and is not conducive to stirring and slag discharge; if it is too wide, the thrust is too large and is not conducive to the slag reflux, resulting in ash accumulation at one end, causing the equipment to be unable to operate.
[0044] When the screw-belt stirring paddle 236 is stirring, it is always scraping the inner wall of the high-temperature dry slag device like a scraper to prevent the ash from coking on the inner wall of the high-temperature dry slag device. At the same time, the ash on the inner wall of the high-temperature dry slag device is turned into the high-temperature dry slag device, which is conducive to the interface renewal of the ash. Because the screw-belt stirring paddle 236 has a certain thrust, it can push the ash to the slag discharge port when discharging slag. When not discharging slag, since the screw-belt stirring paddle 236 is narrow and has a small thrust, most of the ash will flow back, and no accumulation will occur, and it will always remain in a stirring state. The screw-belt stirring paddle 236 solves both the stirring of the ash and the pushing of the ash during slag discharge.
[0045] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high temperature dry slag device, characterized in that: The high-temperature dry slag device includes a shell, a heating component and a stirring component, the heating component is arranged on the outside of the shell, at least part of the stirring component is arranged in the shell, the shell is provided with a feed port, a slag discharge port and an air outlet, the feed port is connected to the slag discharge port of the reactor, and the stirring component includes a stirring power system, a stirring shaft connected to the stirring power system and a screw-belt stirring paddle arranged on the stirring shaft.
2. The high temperature dry slag device according to claim 1, characterized in that: The heating component is a cast iron electric heating component.
3. The high temperature dry slag device according to claim 1, characterized in that: The heating component is provided with a temperature measuring element and a temperature control system, and the temperature measuring element is connected to the temperature control system.
4. The high temperature dry slag device according to claim 3, characterized in that: The temperature measuring element is arranged on the inner wall of the shell.
5. The high temperature dry slag device according to claim 1, characterized in that: The high-temperature dry slag device further includes a slag discharge auger assembly, at least part of which is disposed on one side of the shell body close to the slag discharge port.
6. The high temperature dry slag device according to claim 5, characterized in that: The slag discharge auger assembly includes a slag discharge power system and a slag discharge auger connected to the slag discharge power system. The slag discharge auger is arranged in the shell, and one end of the slag discharge auger away from the slag discharge power system is arranged near the slag discharge port.
7. The high temperature dry slag device according to claim 1, characterized in that: The high-temperature slag drying device further includes a slag discharge valve arranged at the slag discharge port.
8. The high temperature dry slag device according to claim 1, characterized in that: A check valve is arranged on the air outlet.
9. The high temperature dry slag device according to claim 1, characterized in that: The high-temperature slag drying device further comprises an oil and gas recovery device, and the gas outlet is connected to the oil and gas recovery device.
10. The high temperature dry slag device according to any one of claims 1 to 9, characterized in that: The lead of the screw-ribbon stirring paddle is between 60% and 100% of the inner diameter of the shell, and the width of the screw-ribbon stirring paddle is between 8% and 15% of the inner diameter of the shell.