Easy-to-adjust energy-saving drying and sintering system for aluminum oxide catalyst carrier
By designing an energy-saving drying and sintering system for easily adjustable alumina catalyst supports, the problem that existing technologies cannot adapt to various processing needs has been solved, achieving energy-saving, environmentally friendly, and compact processing effects for catalyst supports.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZOUPING KELI ACTIVATED ALUMINA CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-04-28
AI Technical Summary
Existing technologies cannot simultaneously meet the requirements of preheating and calcining catalyst supports in one step, as well as drying, impregnating with active metal, and then sintering. Furthermore, they suffer from high energy consumption and non-compact structures.
An energy-saving drying and sintering system for easily adjustable alumina catalyst carriers was designed, including a furnace body, a mesh belt conveyor, a heating device, and a control device. The furnace body is divided into a drying furnace body and a calcining furnace body, which are connected by a detachable slide rail. Combined with the drying hot air furnace and the calcining hot air furnace, heat exchange is carried out using dust removal air and hot air to achieve flexible processing of the catalyst carrier.
It achieves energy-saving processing of catalyst supports, adapts to different process requirements, has a compact structure, occupies little space, and is environmentally friendly and efficient.
Smart Images
Figure CN224175573U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an energy-saving drying and sintering system for easily adjustable alumina catalyst supports. Background Technology
[0002] Announcement No. CN 204923843 U, authorized on December 30, 2015, discloses a hot air circulating mesh belt roasting furnace for chemical catalysts. It solves the problems of temperature differences in the material layer and high energy consumption in existing technologies. Its features include: the furnace body is divided into three sections: a preheating section (2 / 5 to 5 / 12 of the length), a constant temperature roasting section (2 / 5 to 5 / 12 of the length), and a cooling section (1 / 5 to 1 / 6 of the length). The furnace body adopts an independent control zone structure. A maintenance furnace door, thermoelectric vents, and high-temperature humidity sensors are installed on the other side of the furnace wall. Each zone is equipped with a pipe for discharging decomposition gases and a pipe for supplementing waste heat and fresh air. Waste heat exhaust gas from the cooling section is sent to the constant temperature roasting section and the preheating section for supplementary air via a fan. High-temperature exhaust gas from the constant temperature roasting section is sent to the heating section via a fan. Decomposition exhaust gas from the preheating section is discharged from the roasting furnace via a fan for exhaust gas treatment.
[0003] This chemical catalyst hot air circulating mesh belt roasting furnace is divided into a preheating section, a constant temperature roasting section, and a cooling section, allowing the material to be preheated, roasted, and cooled in one step. However, some catalyst supports require drying first, then impregnation with active metal, and finally roasting and sintering. This chemical catalyst hot air circulating mesh belt roasting furnace cannot meet these requirements.
[0004] Announcement No. CN 205192168 U, authorized on April 27, 2016, discloses a belt dryer system, mainly composed of a feed fan, a heater, a belt dryer, and an exhaust fan. The feed fan is connected to the heater via a pipe, and the heater is used to heat the gas. The heater is also connected to the hot nozzles inside the belt dryer via a pipe. The belt dryer mainly consists of a shell, hot nozzles, conveyor belts, a distributor, a transmission mechanism, a circulating fan, and a discharge hopper. Each conveyor belt has a transmission mechanism at its starting end, which drives the operation. Hot nozzles are linearly arranged along the conveying direction of the second and third conveyor belts. Several circulating fans are located above the shell, and an exhaust vent is located on one side of each circulating fan, connected to the exhaust fan via a pipe. This belt dryer system has a compact structure and small footprint, but it requires independent heating, resulting in high energy consumption. Summary of the Invention
[0005] The technical problem to be solved by this utility model is how to overcome the above-mentioned defects of the prior art and provide an energy-saving drying and sintering system for an easily adjustable alumina catalyst support that is suitable for processing catalyst supports that are preheated and calcined in one step, as well as catalyst supports that require drying, impregnation with active metal, and then sintering.
[0006] To solve the above-mentioned technical problems, this easily adjustable energy-saving drying and sintering system for alumina catalyst carrier includes a furnace body, a mesh belt conveyor, a heating device, and a control device. The furnace body includes a furnace top, a front furnace wall, and a rear furnace wall, and is generally tunnel-shaped. The mesh belt conveyor is located inside the furnace body. Its key feature is that it also includes a detachable slide rail. The furnace body is divided into a drying furnace body and a calcining furnace body. The mesh belt conveyor includes a drying mesh belt conveyor and a calcining mesh belt conveyor. The drying mesh belt conveyor is located inside the drying furnace body, and the calcining mesh belt conveyor is located inside the calcining furnace body. The discharge end of the drying mesh belt conveyor is higher than the inlet end of the calcining mesh belt conveyor. The disassembly and assembly slide can be fixed between the discharge end of the drying mesh belt conveyor and the inlet end of the roasting mesh belt conveyor. It can introduce the discharge of the drying mesh belt conveyor into the inlet end of the roasting mesh belt conveyor and can be moved out between the two. The heating device includes a drying hot air furnace and a roasting hot air furnace. The air outlet of the drying hot air furnace is connected to a drying main air duct with N drying branch air ducts. The outer ends of the drying branch air ducts extend into the upper and lower mesh chains of the drying mesh belt conveyor. The air outlet of the roasting hot air furnace is connected to a roasting main air duct with multiple roasting branch air ducts. The outer ends of the roasting branch air ducts extend into the upper and lower mesh chains of the roasting mesh belt conveyor. N are all positive integers and N≥2.
[0007] When processing catalyst carriers that require one-time molding, a detachable slide is fixed between the discharge end of the drying mesh belt conveyor and the inlet end of the roasting mesh belt conveyor. After drying in the drying furnace, the catalyst carrier enters the roasting furnace directly through the detachable slide for sintering. This is convenient and energy-saving. The drying effect can also be observed or sampled from the detachable slide.
[0008] When processing catalyst carriers that require drying, impregnation with active metal, and finally calcination and sintering, the detachable slide rails should be removed. After drying in the drying furnace, the catalyst is first impregnated with active metal and then enters the calcination furnace from the feed end of the calcination mesh belt conveyor for sintering and shaping.
[0009] This design is suitable for a variety of needs.
[0010] As an optimization, the drying furnace body and the roasting furnace body are parallel to each other, and the discharge end of the drying mesh belt conveyor and the inlet end of the roasting mesh belt conveyor are adjacent to each other. This design results in a compact structure and a small footprint.
[0011] As an optimization, the detachable slide is fixed to a movable frame that is higher at one end and lower at the other, and the bottom of the movable frame is equipped with four swivel casters. This design makes it easy and effortless to move.
[0012] As an optimization, both the drying mesh belt conveyor and the roasting mesh belt conveyor are inclined, with the discharge end higher and the inlet end lower. With this design, after the hot air enters the drying furnace and the roasting furnace, it moves from bottom to top and from the inlet end to the discharge end along the upper mesh belt of either the drying mesh belt conveyor or the roasting mesh belt conveyor.
[0013] As an optimization, it also includes a bag filter, a heat exchange sleeve, and a dust removal duct. The bag filter has an air inlet, an air outlet, and a bottom discharge port. The heat exchange sleeve includes an inner tube and an outer tube. The outer tube is closed at both ends, and an annular space is formed between the inner and outer tubes. It is equipped with an outer tube inlet pipe and an outer tube outlet pipe. The inner tube of the heat exchange sleeve is connected in series to the main drying duct. The drying furnace body includes a first zone, a middle zone, and a tail zone, N=2. The outer ends of two drying branch air ducts are respectively connected to the middle zone and the tail zone. One end of the dust removal duct is connected between the upper and lower mesh chains in the first zone, and the other end of the dust removal duct is connected to the outer tube outlet pipe. The outer tube inlet pipe is connected to the air outlet pipe of the bag filter through a pipe. The top of the roasting furnace body is equipped with an exhaust port, which is connected to the air inlet pipe of the bag filter through a pipe. With this design, the dust removal air temperature at the outlet duct of the bag filter is approximately 150~200℃, while the outlet air temperature at the dryer hot air furnace reaches over 600℃. The two exchange heat in the heat exchange sleeve, raising the dust removal air temperature to over 300℃ before it enters the first zone of the dryer furnace through the pipeline. The outlet air temperature at the dryer hot air furnace drops to 500℃ and enters the middle and tail zones of the dryer furnace through two drying branch ducts, making full use of the dust removal air and resulting in an environmentally friendly structure.
[0014] As an optimization, the top of the drying furnace is equipped with multiple exhaust ports at intervals. These exhaust ports are connected to a main exhaust pipe, which is connected to the inlet of an exhaust fan. The outlet of the exhaust fan is connected to a chimney. Temperature measuring elements are installed in the first, middle, and final zones, and these temperature measuring elements are connected to the signal input terminal of the control device. This design results in good drying performance.
[0015] This utility model provides an easily adjustable alumina catalyst support using an energy-saving drying and sintering system. It is energy-saving and environmentally friendly, and is suitable for processing catalyst supports that are preheated and calcined in one step, as well as catalyst supports that require drying, impregnation with active metal, and then sintering. Attached Figure Description
[0016] The energy-saving drying and sintering system for the easily adjustable alumina catalyst support of this invention will be further described below with reference to the accompanying drawings:
[0017] Figure 1This is a schematic diagram of a catalyst support that is processed in one step using an energy-saving drying and sintering system with this easily adjustable alumina catalyst support;
[0018] Figure 2 This is a schematic diagram of a catalyst support that utilizes an easily adjustable alumina catalyst support and is processed using an energy-saving drying and sintering system. The catalyst support is first dried, then impregnated with active metal, and then sintered.
[0019] Figure 1 , 2 The solid arrows in the image indicate the direction of hot air flow from the drying hot air furnace or the roasting hot air furnace; Figure 1 , 2 The small hollow arrows indicate the direction of the dust-removing airflow. Figure 2 The large hollow arrow indicates the catalyst support.
[0020] In the diagram: 1 is a detachable slide rail, 2 is the drying furnace body, 3 is the roasting furnace body, 4 is the drying mesh belt conveyor, 5 is the roasting mesh belt conveyor, 6 is the drying hot air furnace, 7 is the roasting hot air furnace, 8 is the drying branch air duct, 9 is the drying main air duct, 10 is the upper mesh chain, 11 is the lower mesh chain, 12 is the roasting branch air duct, 13 is the roasting main air duct, 14 is the bag filter, 15 is the heat exchange jacket, 151 is the inner pipe, 152 is the outer pipe, 16 is the dust removal air duct, 17 is the exhaust port, 18 is the smoke exhaust port, 19 is the main smoke exhaust pipe, 20 is the smoke exhaust fan, 21 is the first zone, 22 is the middle zone, 23 is the tail zone, 24 is the chimney, 25 is the idler roller, 26 is the stirring fan, and 27 is the fan. Detailed Implementation
[0021] Implementation method one: such as Figure 1 , 2 As shown, this easily adjustable alumina catalyst carrier energy-saving drying and sintering system includes a furnace body, a mesh belt conveyor, a heating device, and a control device. The furnace body includes a furnace top, a front furnace wall, and a rear furnace wall, and is generally tunnel-shaped. The mesh belt conveyor is located inside the furnace body. Its key feature is that it also includes a detachable slide rail 1. The furnace body is divided into a drying furnace body 2 and a calcining furnace body 3. The mesh belt conveyor includes a drying mesh belt conveyor 4 and a calcining mesh belt conveyor 5. The drying mesh belt conveyor 4 is located inside the drying furnace body 2, and the calcining mesh belt conveyor 5 is located inside the calcining furnace body 3. The discharge end of the drying mesh belt conveyor 4 is higher than the inlet end of the calcining mesh belt conveyor 5. The detachable slide rail 1 can be fixed between the discharge end of the drying mesh belt conveyor 4 and the inlet end of the calcining mesh belt conveyor 5, and can introduce the discharge from the drying mesh belt conveyor 4 into the inlet end of the calcining mesh belt conveyor 5. Figure 1 As shown.
[0022] The heating device includes a drying hot air furnace 6 and a roasting hot air furnace 7. The air outlet of the drying hot air furnace 6 is connected to a drying main air duct 9 with N drying branch air ducts 8. The outer ends of the drying branch air ducts 8 extend into the space between the upper chain 10 and the lower chain 11 of the drying mesh belt conveyor 4. The air outlet of the roasting hot air furnace 7 is connected to a roasting main air duct 13 with multiple roasting branch air ducts 12. The outer ends of the roasting branch air ducts 12 extend into the space between the upper chain 10 and the lower chain 11 of the roasting mesh belt conveyor 5. N are all positive integers and N≥2.
[0023] The drying furnace body 2 and the roasting furnace body 3 are parallel to each other, and the discharge end of the drying mesh belt conveyor 4 and the inlet end of the roasting mesh belt conveyor 5 are adjacent to each other.
[0024] Both the drying mesh belt conveyor 4 and the roasting mesh belt conveyor 5 are inclined, with the discharge end higher and the inlet end lower.
[0025] It also includes a bag filter 14, a heat exchange sleeve 15, and a dust removal duct 16. The bag filter 14 is provided with an inlet pipe, an outlet pipe, and a bottom discharge port. The heat exchange sleeve 15 includes an inner tube 151 and an outer tube 152. The outer tube 152 is closed at both ends, and an annular space is formed between the inner tube 151 and the outer tube 152. An outer tube inlet pipe and an outer tube outlet pipe are provided. The inner tube 151 of the heat exchange sleeve 15 is connected in series to the main drying duct 9. The drying furnace body 2 includes a first zone 2. 1. Middle zone 22 and tail zone 23, N=2, the outer ends of two drying branch air pipes 8 are respectively connected to the middle zone 22 and tail zone 23. One end of the dust removal air pipe 16 is connected between the upper and lower mesh chains 10 and 11 of the first zone. The other end of the dust removal air pipe 16 is connected to the outer pipe outlet pipe. The outer pipe inlet pipe is connected to the outlet pipe of the bag dust collector 14 through a pipe. The top of the roasting furnace body 3 is provided with an exhaust port 17, which is connected to the inlet pipe of the bag dust collector 14 through a pipe.
[0026] The top of the drying furnace body 2 is provided with multiple exhaust ports 18 at intervals. The exhaust ports 18 are connected to the exhaust manifold 19, which is connected to the inlet of an exhaust fan 20. The outlet of the exhaust fan 20 is connected to the chimney 24. Temperature measuring elements are respectively provided in the first zone 21, the middle zone 22, and the tail zone 23. The temperature measuring elements are connected to the signal input terminal of the control device (figure omitted).
[0027] The detachable slide is fixed on a movable frame that is high at one end and low at the other. The bottom of the movable frame is equipped with four swivel casters (figure omitted).
[0028] like Figure 2 As shown, when processing a catalyst carrier that requires drying, then impregnation with active metal, and then sintering, the detachable slide 1 needs to be moved out between the discharge end of the drying mesh belt conveyor 4 and the inlet end of the roasting mesh belt conveyor 5.
Claims
1. An energy-saving drying and sintering system for easily adjustable alumina catalyst carriers, comprising a furnace body, a mesh belt conveyor, a heating device, and a control device, wherein the furnace body includes a furnace top, a front furnace wall, and a rear furnace wall, and is generally tunnel-shaped, and the mesh belt conveyor is disposed within the furnace body, characterized in that: It also includes a detachable slide rail. The furnace body is divided into a drying furnace body and a roasting furnace body. The mesh belt conveyor includes a drying mesh belt conveyor and a roasting mesh belt conveyor. The drying mesh belt conveyor is located inside the drying furnace body, and the roasting mesh belt conveyor is located inside the roasting furnace body. The discharge end of the drying mesh belt conveyor is higher than the inlet end of the roasting mesh belt conveyor. The detachable slide rail can be fixed between the discharge end of the drying mesh belt conveyor and the inlet end of the roasting mesh belt conveyor, allowing the discharge of the drying mesh belt conveyor to be guided... The heating device includes a drying hot air furnace and a roasting hot air furnace. The air outlet of the drying hot air furnace is connected to a drying main air duct with N drying branch air ducts. The outer ends of the drying branch air ducts extend into the upper and lower mesh chains of the drying mesh belt conveyor. The air outlet of the roasting hot air furnace is connected to a roasting main air duct with multiple roasting branch air ducts. The outer ends of the roasting branch air ducts extend into the upper and lower mesh chains of the roasting mesh belt conveyor. N are all positive integers and N≥2.
2. The energy-saving drying and sintering system for the easily adjustable alumina catalyst support according to claim 1, characterized in that: The drying furnace body and the roasting furnace body are parallel to each other, and the discharge end of the drying mesh belt conveyor and the inlet end of the roasting mesh belt conveyor are adjacent to each other.
3. The energy-saving drying and sintering system for the easily adjustable alumina catalyst support according to claim 1, characterized in that: The detachable slide is fixed on a movable frame that is high at one end and low at the other, and the bottom of the movable frame is equipped with four swivel casters.
4. The energy-saving drying and sintering system for the easily adjustable alumina catalyst support according to claim 1, characterized in that: Both the drying mesh belt conveyor and the roasting mesh belt conveyor are inclined, with the discharge end higher and the inlet end lower.
5. The energy-saving drying and sintering system for the easily adjustable alumina catalyst support according to claim 1, characterized in that: It also includes a bag filter, a heat exchange sleeve, and a dust removal duct. The bag filter has an inlet pipe, an outlet pipe, and a bottom discharge port. The heat exchange sleeve includes an inner pipe and an outer pipe. The outer pipe is closed at both ends, and an annular space is formed between the inner and outer pipes. It has an outer pipe inlet and an outer pipe outlet. The inner pipe of the heat exchange sleeve is connected in series to the main drying duct. The drying furnace body includes a first zone, a middle zone, and a tail zone, N=2. The outer ends of two drying branch ducts are respectively connected to the middle zone and the tail zone. One end of the dust removal duct is connected between the upper and lower mesh chains in the first zone, and the other end of the dust removal duct is connected to the outlet of the outer pipe. The inlet pipe of the outer pipe is connected to the outlet pipe of the bag filter through a pipe. The top of the roasting furnace body is provided with an exhaust port, which is connected to the inlet pipe of the bag filter through a pipe.
6. The energy-saving drying and sintering system for the easily adjustable alumina catalyst support according to claim 5, characterized in that: The top of the drying furnace is provided with multiple exhaust ports at intervals. The exhaust ports are connected to the main exhaust pipe, which is connected to the inlet of an exhaust fan. The outlet of the exhaust fan is connected to the chimney. Temperature measuring elements are provided in the first zone, the middle zone and the tail zone respectively. The temperature measuring elements are connected to the signal input terminal of the control device.
Citation Information
Patent Citations
Chemical industry catalyst heated air circulation guipure bakes burning furnace over a slow fire
CN204923843U
Band dryer system
CN205192168U