Sulfate cracking device

Abstract

The utility model discloses a sulfate cracking device in the technical field of cracking furnaces. The sulfate cracking device comprises a rack, the lifting mechanism comprises a driving main body and a telescopic rod; a support plate; a furnace cover; a furnace tube; a hearth; a thermal insulation material; a heating mechanism; two end covers; two rotary supporting mechanisms; a rotation driving mechanism; the end face of the collecting cover is provided with a feeding port, and the top is provided with a smoke exhaust pipeline; a discharge hole is formed in the bottom of the sealing cover; the device disclosed by the utility model can be used for continuously heating and cracking sulfate, is stable in work, high in treatment efficiency, large in production yield and suitable for industrial application, and all generated resources can be recycled, so that environmental pollution is reduced, and benefits are created; wherein sulfur dioxide and sulfur trioxide formed by cracking have the characteristics of high purity and high concentration, the subsequent absorption conversion rate is improved, and the formed metal oxide is high in value and convenient to store.

Description

Technical Field

[0001] The utility model relates to the technical field of cracking furnaces, in particular to a sulfate cracking device. Background Art

[0002] In order to improve the surface finish and corrosion resistance of stainless steel, sulfuric acid pickling is often used. The waste sulfuric acid solution produced by this method contains free acid and heavy metal ions, mainly iron ions. In order to avoid direct discharge and environmental pollution, the waste sulfuric acid solution needs to be treated; at present, the traditional neutralization precipitation method is mainly used for treatment at home and abroad, but it will produce a large amount of heavy metal sludge, and the disposal cost of sludge is high, so some companies currently use evaporation concentration crystallization method for treatment.

[0003] The steps of the evaporation concentration crystallization method are: evaporating and concentrating the waste sulfuric acid solution to make it reach a supersaturated state, and then cooling it to crystallize out mixed crystals of anhydride and sulfate; since the solution mainly contains iron ions, the crystals precipitated are mainly ferrous sulfate heptahydrate.

[0004] However, since ferrous sulfate heptahydrate has strong redox properties, is susceptible to moisture and water absorption, and is corrosive, the anhydride and sulfate mixed crystals produced by the evaporation concentration crystallization method are difficult to store and prone to pollution, and are not easy to recycle and reuse. Utility Model Content

[0005] The utility model aims to provide a sulfate cracking device, which solves the technical problem that the acid anhydride and sulfate mixed crystals precipitated by the evaporation concentration crystallization method in the prior art are not convenient for recycling and reuse.

[0006] The utility model discloses a sulfate cracking device, comprising:

[0007] frame;

[0008] The lifting mechanism comprises a driving body and a telescopic rod, wherein the driving body is hinged on the frame;

[0009] A support plate is arranged horizontally above the frame, with one end bottom hinged to the frame and the other end bottom hinged to the end of the telescopic rod;

[0010] A furnace cover is installed on the top surface of the support plate;

[0011] A furnace pipe, which passes through the furnace cover transversely;

[0012] A furnace chamber is installed in the furnace cover and sleeved outside the furnace tube;

[0013] Insulation material, filled between the furnace cover and the furnace;

[0014] A heating mechanism is arranged in the furnace;

[0015] Two end covers are respectively installed at two ends of the furnace cover and sleeved outside the furnace tube;

[0016] Two rotating support mechanisms are installed on the top surface of the support plate and are respectively located in the two end shields and are both sleeved on the furnace tube;

[0017] A rotary drive mechanism is mounted on the support plate and is drivingly connected to the furnace tube;

[0018] A collecting hood is installed on the end surface of the end hood close to the lifting mechanism and covers the end of the furnace tube. The end surface of the collecting hood is provided with a feed port corresponding to the furnace tube, and a smoke exhaust pipe is provided on the top;

[0019] The closing cover is installed on the end surface of the end cover away from the lifting mechanism, covers the end of the furnace tube, and has a discharge port at the bottom.

[0020] The present application can continuously heat and crack the material, and its operation is stable, the processing efficiency is high, the production output is large, and it is suitable for industrial applications. Air is not introduced, so that the high-temperature process does not produce nitrogen oxides, thereby eliminating the need for the treatment of tail gas nitrogen oxides. All resources generated can be recycled and reused, which not only reduces environmental pollution but also creates benefits. Among them, sulfur dioxide and sulfur trioxide formed by cracking have the characteristics of high purity and concentration, which improves the subsequent absorption conversion rate, makes the formed regenerated sulfuric acid high in purity, and the formed metal oxides are of high value and convenient to store.

[0021] On the basis of the above technical solution, the solution of this application can also be improved as follows:

[0022] Preferably, the heating mechanism comprises:

[0023] Two groups of heating rods are respectively located at the upper and lower sides of the furnace tube and are evenly spaced along the axial direction of the furnace tube;

[0024] The heating rod comprises:

[0025] The heat-resistant tube is arranged transversely, and both ends thereof penetrate to the outside of the furnace cover;

[0026] The resistance wire is wound on the heat-resistant tube and is located in the furnace. The adoption of this solution facilitates independent control of the temperature of each temperature zone, thereby improving the accuracy of temperature regulation, ensuring the sufficiency of the cracking reaction, and improving the thermal insulation effect, thereby playing a role in energy saving and reducing production costs.

[0027] Preferably, two side covers are respectively installed on both sides of the furnace cover and cover the ends of the heat-resistant tubes; by adopting this solution, the ends of the heat-resistant tubes and the lines used for power transmission can be protected from being affected by the external environment, thereby improving the operating stability of the device.

[0028] Preferably, a regulating valve is installed on the smoke exhaust pipe, and the regulating valve is used to adjust the smoke exhaust volume; adopting this solution improves the smoke collection effect.

[0029] Preferably, a sewage pipe is installed at the bottom of the collecting cover, and a closing valve is installed on the sewage pipe; by adopting this solution, the sundries that fall into the bottom of the collecting cover during use can be cleaned up in time and quickly, thereby improving the cleaning efficiency.

[0030] Preferably, the bottom of the closed cover has a guide bucket with a conical structure, and the discharge port is arranged at the bottom of the guide bucket; adopting this solution, it plays a role in guiding the material to converge and concentrate to the discharge port, avoiding the material from remaining in the closed cover, and improving the discharge effect.

[0031] Preferably, the end surface of the closing cover is provided with a cleaning port corresponding to the furnace tube, and the end surface of the closing cover is detachably mounted with a closing cover for sealing the cleaning port; adopting this solution, it is convenient to clean the inside of the furnace tube, which reduces the difficulty of cleaning and improves work efficiency.

[0032] Preferably, an observation tube corresponding to the furnace tube is installed on the end surface of the closed cover, and a lens is installed in the observation tube; adopting this solution, it is convenient to observe the reaction situation inside the furnace tube in a timely manner to ensure the stable progress of the cracking reaction.

[0033] Preferably, it also includes:

[0034] A plurality of lifting plates are arranged at intervals in the furnace tube; by adopting this solution, the material can be fully stirred, thereby ensuring uniform heating and improving the adequacy of the cracking reaction.

[0035] Through the above technical solution, the utility model achieves the following beneficial effects:

[0036] 1. The present application can continuously heat and crack the material, and its operation is stable, the processing efficiency is high, the production output is large, and it is suitable for industrial applications. In addition, air is not introduced, so that the high-temperature process does not produce nitrogen oxides, thereby eliminating the need to treat tail gas nitrogen oxides. All resources generated can be recycled and reused, which not only reduces environmental pollution but also creates benefits. Among them, sulfur dioxide and sulfur trioxide formed by cracking have the characteristics of high purity and concentration, which improves the subsequent absorption conversion rate, makes the formed regenerated sulfuric acid high in purity, and the formed metal oxides are of high value and convenient for storage;

[0037] 2. The present application sets up a heating mechanism including: two groups of heating rods, which are convenient for independent control of the temperature of each temperature zone, thereby improving the accuracy of temperature regulation and ensuring the full cracking reaction. Heat-resistant pipes are used to block heat transfer, improve thermal insulation effects, save energy, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a front cross-sectional view of a sulfate cracking device according to a specific embodiment of the utility model;

[0040] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0041] Figure 3 for Figure 1 A partial top view cross-sectional view of a sulfate cracking unit shown;

[0042] Figure 4 for Figure 1 A side cross-sectional view of a sulfate cracking unit is shown;

[0043] Figure 5 for Figure 1 A left side view of the sulfate cracking unit is shown;

[0044] Figure 6 for Figure 1 A right side view of the sulfate cracking unit shown;

[0045] Description of reference numerals:

[0046] 1. Frame; 2. Lifting mechanism; 3. Support plate; 4. Furnace cover; 5. Furnace tube; 6. Furnace chamber; 7. Insulation material; 8. Heating mechanism; 9. End cover; 10. Rotation support mechanism; 11. Rotation drive mechanism; 12. Collection cover; 13. Closing cover; 14. Side cover; 15. Lifting plate;

[0047] 21. Driving body; 22. Telescopic rod; 81. Heating rod; 121. Feeding port; 122. Smoke exhaust pipe; 123. Regulating valve; 124. Sewage pipe; 125. Closing valve; 131. Discharging port; 132. Diversion hopper; 133. Cleaning port; 134. Closing cover; 135. Observation tube; 136. Lens;

[0048] 81a, heat-resistant tube; 81b, resistance wire. DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0050] First of all, it should be noted that in the following description, some directional words involved in order to clearly illustrate the technical solution of the utility model, such as "top", "bottom", etc., all have meanings by analogy with the normal directions of the components in the sulfate cracking device. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the utility model.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0052] In this application, unless otherwise clearly specified and limited, the terms "installation" 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 direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0053] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0054] Example:

[0055] like Figure 1 As shown, an embodiment of the present application discloses a sulfate cracking device for thermally cracking anhydride and sulfate mixed crystals produced by evaporation concentration crystallization method, which includes: a frame 1, a lifting mechanism 2, a support plate 3, a furnace hood 4, a furnace tube 5, a furnace chamber 6, a heat insulation material 7, a heating mechanism 8, two end hoods 9, two rotating support mechanisms 10, a rotating drive mechanism 11, a collecting hood 12 and a closing hood 13.

[0056] The rack 1 is used to support the equipment and keep it balanced and stable; an adjustment pad is provided at the bottom of each leg to adjust the height to avoid shaking or instability caused by uneven ground.

[0057] The lifting mechanism 2 includes a driving body 21 and a telescopic rod 22. The driving body 21 is hinged on the frame 1 so that the telescopic rod 22 can swing left and right. The lifting mechanism 2 is used to adjust the inclination angle of the furnace body, thereby adjusting the discharge speed. It can be a servo electric cylinder, a hydraulic cylinder or a manual screw drive device, etc., and is not specifically limited.

[0058] The support plate 3 is arranged horizontally above the frame 1, has a rectangular structure, good regularity, and is hinged to the frame 1 at one end, specifically hinged on both sides of the bottom, and hinged to the end of the telescopic rod 22 at the other end, thereby forming a three-point bucket support to ensure the stability of the support.

[0059] The furnace cover 4 is installed on the top surface of the support plate 3; it is in a rectangular shape as a whole, assembled with detachable steel plates, has good structural stability, and is used to protect internal components from damage.

[0060] The furnace tube 5 runs through the furnace cover 4 horizontally; it is made of high temperature resistant and acid corrosion resistant materials, such as silicon carbide and SUS310 stainless steel; it functions to transport materials and heat and crack; when working, the material receives heat during the movement in the furnace tube 5, and then heats up and cracks; the furnace tube 5 is divided into three temperature zones, namely preheating, insulation and cooling.

[0061] The furnace chamber 6 is installed in the furnace cover 4 and is sleeved on the outside of the furnace tube 5; the overall structure is a tubular structure, preferably a square tube, the interior of which is used to install a heating mechanism 8 to heat the furnace tube 5, and the exterior is used to cooperate with the furnace cover 4 to form a chamber filled with insulation material 7.

[0062] The heat-insulating material 7 is filled between the furnace cover 4 and the furnace 6 and is used to improve the heating effect, prevent the internal equipment from being damaged by external forces, and avoid burns and electric shocks to personnel. It can be made of materials such as ceramic fiber, rock wool or silicate board, but is not limited to these and is not specifically limited.

[0063] The heating mechanism 8 is arranged in the furnace 6 ; it is arranged along the axis of the furnace tube 5 and is used to heat the furnace tube 5 so that the material in the furnace tube 5 is thermally cracked.

[0064] Two end covers 9 are respectively installed at both ends of the furnace cover 4 and are sleeved outside the furnace tube 5 to protect the components arranged inside and support the collecting cover 12 or the closing cover 13; the end cover 9 is composed of a top plate, an end plate and two side plates, and is installed in a detachable manner to facilitate the inspection and maintenance of the internal components.

[0065] Two rotating support mechanisms 10 are installed on the top surface of the support plate 3 and are respectively located in the two end covers 9 and are both sleeved on the furnace tube 5; they are used to support the furnace tube 5 at both ends and enable it to rotate smoothly in the circumferential direction, so that the material can be heated, kept warm and cracked more evenly.

[0066] The rotary drive mechanism 11 is installed on the support plate 3 and is in driving connection with the furnace tube 5. It is used to provide power to drive the furnace tube 5 to rotate circumferentially. And it can adjust the rotation speed of the furnace tube 5 by adjusting the frequency, control the moving speed of the material in the furnace tube 5, and adjust the high-temperature cracking time of the material.

[0067] It should be noted that the purpose of rotating the furnace tube 5 is to heat evenly and turn the material over. Due to the inclination angle of the furnace tube 5, the material turns over and moves backward at the same time.

[0068] The collecting hood 12 is installed on the end surface of the end hood 9 close to the lifting mechanism 2 and covers the end of the furnace tube 5. The end surface of the collecting hood 12 is provided with a feed port 121 corresponding to the furnace tube 5, and the top is provided with a smoke exhaust pipe 122.

[0069] The closing cover 13 is installed on the end surface of the end cover 9 away from the lifting mechanism 2, covers the end of the furnace tube 5, and has a discharge port 131 at the bottom.

[0070] Preferably, a cover closure, such as a flange, is provided at the discharge port 131 to prevent the material from overflowing, ensure smooth discharge, and prevent air from entering the furnace tube 5 .

[0071] Preferably, the heating mechanism 8 is provided with eight heating zones (which can be increased or decreased according to the specific needs) starting from the furnace mouth according to the length of the furnace tube 5, and each heating zone is independently controlled. Among them, the area near the furnace mouth is the first zone, which is the temperature measurement zone, which mainly monitors the temperature; the second to third zones are the preheating zones, which increase the material temperature to the set range according to actual needs; the fourth to sixth zones are the insulation zones, which maintain the temperature of the zone, are the main heating zones, are used to maintain the material temperature, provide the heat required for material cracking, and are the main energy consumption zones; the seventh zone is the transition cooling zone, which maintains the temperature required for the slow cooling of the material; the eighth zone is near the furnace tail, which is the temperature measurement zone, which is used to monitor the temperature of the material outlet. At the same time, each heating zone is provided with a thermocouple for real-time monitoring of the heating temperature, so as to control the start and stop of the heating mechanism 8 of the heating zone.

[0072] In this embodiment, from the furnace mouth to the furnace tail of the furnace tube 5, the temperature is controlled in eight temperature zones along the length direction, and the temperature of each temperature zone can be adjusted according to the process. In this embodiment, the total length of the heating zone is 4500mm, the first to seventh temperature zones are 600mm long respectively, and the eighth temperature zone is 300mm long. Among them, the first and second temperature zones at the inlet are heating zones, the third, fourth, fifth, sixth and seventh temperature zones are high temperature zones, and the eighth temperature zone is a cooling transition zone. The maximum temperature of the high temperature zone is 1130℃ and shall not exceed the maximum temperature allowed by the furnace tube material, and the long-term use temperature is ≤1100℃.

[0073] In this embodiment, the rotation speed of the furnace tube 5 is variable frequency stepless speed regulation, and the speed range is about 0.6 rpm to 3 rpm (this parameter is determined according to the on-site material cracking conditions).

[0074] In this embodiment, in order to ensure sufficient cracking reaction, the furnace tube 5 needs to be heated to a set temperature before feeding, and the specific steps are as follows:

[0075] Step 1: Turn on the heating switch;

[0076] Step 2: Heat up in stages; specifically: heat up by 200°C in each stage, i.e. 100→300°C, 300→500°C, 500→700°C, 700→950°C, with a maximum not exceeding 1100°C; after the temperature reaches the target temperature, keep the temperature constant for 10 to 15 minutes, and then adjust the temperature setting value.

[0077] In this embodiment, the temperature of each temperature zone is set as follows:

[0078] Heating zone: the first temperature zone is 300°C, the second temperature zone is 800°C;

[0079] High temperature zone: the third to sixth temperature zones are 1100°C; the seventh temperature zone is 950°C;

[0080] Cooling transition zone, the eighth temperature zone is 100℃.

[0081] The working method of this embodiment is as follows:

[0082] During adjustment, the lifting mechanism 2 is driven to tilt the front end of the support plate 3, so that the top furnace body is tilted, and the furnace tube 5 is kept tilted to facilitate material transportation; wherein, the tilt angle of the upper furnace body is 0 to 8°, and the angle can be adjusted by hand.

[0083] When in use, the material is fed into the furnace tube 5 from the feed port 121 through the feed device, and the rotary drive mechanism 11 drives the furnace tube 5 to rotate slowly in the circumferential direction, so that the material moves from the furnace port to the furnace tail, passing through different temperature zones during the process, so that the material is heated and preheated, high temperature, and temperature-lowering transitions are performed in sequence; the material is cracked at a high temperature of 1100°C to form metal oxides and sulfur dioxide and sulfur trioxide flue gas. Among them, the metal oxide is finally discharged from the furnace tail of the furnace tube 5, falls into the closed cover 13, and finally falls into the external product collection device from the discharge port 131; and the sulfur dioxide and sulfur trioxide flue gas is output to the flue gas collection device through the exhaust pipe 122 to form regenerated sulfuric acid.

[0084] It should be noted that the feeding device is a pushing structure inside the furnace head of the furnace tube 5, which is spiral-shaped and is used to quickly flip the material at the furnace mouth and send it into the furnace to prevent accumulation at the furnace mouth.

[0085] In this embodiment, the reaction process carried out in the furnace tube 5 is as follows:

[0086]

[0087]

[0088]

[0089] .

[0090] The utility model can continuously heat and crack the material through the above-mentioned device, and its operation is stable, the processing efficiency is high, the production output is large, and it is suitable for industrial application. In addition, no air is introduced, so that the high-temperature process does not produce nitrogen oxides, thereby eliminating the need for the treatment of tail gas nitrogen oxides. All resources produced can be recycled and reused, which not only reduces environmental pollution but also creates benefits. Among them, sulfur dioxide and sulfur trioxide formed by cracking have the characteristics of high purity and concentration, which improves the subsequent absorption conversion rate, makes the formed regenerated sulfuric acid have high purity, and the formed metal oxides are of high value and convenient to store.

[0091] In some embodiments, Figure 1 , Figure 3 and Figure 4 As shown, the heating mechanism 8 includes: two groups of heating rods 81, which are respectively located on the upper and lower sides of the furnace tube 5 and are evenly spaced along the axial direction of the furnace tube 5; a group of heating rods 81 is preferably set to sixteen and arranged in a single row and straight line, or less or more, which can be adjusted according to actual application conditions.

[0092] Through the above settings, it is convenient to independently control the temperature of each temperature zone, thereby improving the accuracy of temperature regulation and ensuring the fullness of the cracking reaction.

[0093] Specifically, the heating rod 81 includes: a heat-resistant tube 81a and a resistance wire 81b; the heat-resistant tube 81a is arranged horizontally, and both ends penetrate to the outside of the furnace cover 4, and can be a ceramic tube; the resistance wire 81b is wound on the heat-resistant tube 81a and is located in the furnace 6.

[0094] The heat transfer is blocked by the heat-resistant pipe 81a, the thermal insulation effect is improved, energy saving is achieved, and production costs are reduced.

[0095] In some embodiments, Figure 3 to Figure 6 As shown, the furnace hood 4 further includes two side covers 14, which are respectively installed on both sides of the furnace hood 4 and cover the ends of the heat-resistant pipe 81a.

[0096] By providing the side cover 14, the end of the heat-resistant pipe 81a and the line used for power transmission can be protected to avoid being affected by the external environment during actual use, thereby improving the operating stability of the device.

[0097] In some embodiments, Figure 1 and Figure 6 As shown, a regulating valve 123 is installed on the smoke exhaust pipe 122, and the regulating valve 123 is used to adjust the smoke exhaust volume; the regulating valve 123 can be a manual valve or a solenoid valve, which is not limited.

[0098] In some embodiments, Figure 2 and Figure 6 As shown, a sewage pipe 124 is installed at the bottom of the collecting cover 12 , and a closing valve 125 is installed on the sewage pipe 124 .

[0099] The sewage pipe 124 is provided to conveniently and quickly clean up the debris that falls into the bottom of the collection cover 12 during use, thereby improving the cleaning efficiency; the closing valve 125 is used to block the sewage pipe 124 under normal conditions to prevent smoke leakage during operation.

[0100] In some embodiments, Figure 1 and Figure 5 As shown, the bottom of the closed cover 13 has a guide hopper 132 with a conical structure, and the discharge port 131 is arranged at the bottom end of the guide hopper 132 .

[0101] The guide hopper 132 provided above plays a role in guiding the materials to converge toward the discharge port 131, thereby preventing the materials from remaining in the sealing cover 13 and improving the discharge effect.

[0102] In some embodiments, Figure 2 and Figure 5 As shown, the end surface of the closing cover 13 is provided with a cleaning port 133 corresponding to the furnace tube 5, and the end surface of the closing cover 13 is detachably mounted with a closing cover 134 for sealing the cleaning port 133, and the closing cover 134 is preferably installed by bolts arranged in a ring.

[0103] When the inside of the furnace tube 5 needs to be cleaned, the closing cover 134 is opened, and the operator can clean the inside of the furnace tube 5 through the cleaning opening 133, which reduces the cleaning difficulty and improves the work efficiency.

[0104] In some embodiments, Figure 2 and Figure 5 As shown, an observation tube 135 corresponding to the furnace tube 5 is installed on the end surface of the sealing cover 13, and a lens 136 is installed in the observation tube 135. The lens 136 is made of a high-temperature resistant transparent material, such as borosilicate glass.

[0105] During operation, the operator can conveniently and timely observe the reaction conditions inside the furnace tube 5 through the observation tube 135 to ensure that the cracking reaction proceeds stably; the lens 136 plays a blocking role to prevent air from entering.

[0106] In some embodiments, Figure 1 and Figure 4 As shown, it also includes: a plurality of material lifting plates 15, which are arranged in the furnace tube 5 at intervals.

[0107] Specifically, there are multiple groups of lifting plates 15 , and each group is evenly spaced along the axial direction of the furnace tube 5 ; each group of lifting plates 15 has multiple, preferably three, lifting plates that are evenly installed on the circumferential inner wall of the furnace tube 5 .

[0108] By providing the lifting plate 15, the material can be fully stirred, thereby ensuring uniform heating and improving the sufficiency of the cracking reaction.

[0109] It should be noted that the rotary drive mechanism 11 is not limited to chain drive, and may also be multi-stage gear meshing drive, belt drive, etc., without specific limitation.

[0110] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0111] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A sulfate cracking device, characterized in that: include: Rack(1); The lifting mechanism (2) comprises a driving body (21) and a telescopic rod (22), wherein the driving body (21) is hingedly connected to the frame (1); A support plate (3) is arranged transversely above the frame (1), with the bottom of one end being hinged to the frame (1) and the bottom of the other end being hinged to the end of the telescopic rod (22); A furnace cover (4) mounted on the top surface of the support plate (3); A furnace tube (5) extending transversely through the furnace cover (4); A furnace chamber (6) is installed in the furnace cover (4) and sleeved outside the furnace tube (5); A heat-insulating material (7) is filled between the furnace cover (4) and the furnace chamber (6); A heating mechanism (8) is arranged in the furnace (6); Two end covers (9) are respectively mounted on two ends of the furnace cover (4) and sleeved outside the furnace tube (5); Two rotating support mechanisms (10) are mounted on the top surface of the support plate (3), are located in the two end shields (9) respectively, and are both sleeved on the furnace tube (5); A rotary drive mechanism (11) is mounted on the support plate (3) and is drivingly connected to the furnace tube (5); A collecting hood (12) is installed on the end surface of the end hood (9) close to the lifting mechanism (2) and covers the end of the furnace tube (5); the end surface of the collecting hood (12) is provided with a feed port (121) corresponding to the furnace tube (5), and the top is provided with a smoke exhaust pipe (122); A closed cover (13) is installed on the end surface of the end cover (9) away from the lifting mechanism (2), covers the end of the furnace tube (5), and has a discharge port (131) at the bottom.

2. The sulfate cracking device according to claim 1, characterized in that: The heating mechanism (8) comprises: Two groups of heating rods (81) are respectively located on the upper and lower sides of the furnace tube (5), and are evenly spaced along the axial direction of the furnace tube (5); The heating rod (81) comprises: A heat-resistant tube (81a) arranged transversely, with both ends extending through the outside of the furnace cover (4); The resistance wire (81b) is wound around the heat-resistant tube (81a) and is located in the furnace (6).

3. The sulfate cracking device according to claim 2, characterized in that: Also includes: Two side covers (14) are respectively installed on both sides of the furnace cover (4) and cover the ends of the heat-resistant tube (81a).

4. The sulfate cracking device according to claim 1, characterized in that: The smoke exhaust pipe (122) is provided with a regulating valve (123), and the regulating valve (123) is used to adjust the smoke exhaust volume.

5. The sulfate cracking device according to claim 1, characterized in that: A sewage discharge pipe (124) is installed at the bottom of the collecting hood (12), and a closing valve (125) is installed on the sewage discharge pipe (124).

6. The sulfate cracking device according to claim 1, characterized in that: The bottom of the closed cover (13) is provided with a guide hopper (132) with a conical structure, and the discharge port (131) is arranged at the bottom end of the guide hopper (132).

7. The sulfate cracking device according to claim 1, characterized in that: The end surface of the sealing cover (13) is provided with a cleaning port (133) corresponding to the furnace tube (5), and the end surface of the sealing cover (13) is detachably mounted with a sealing cover (134) for sealing the cleaning port (133).

8. The sulfate cracking device according to claim 1, characterized in that: An observation tube (135) corresponding to the furnace tube (5) is installed on the end surface of the closed cover (13), and a lens (136) is installed in the observation tube (135).

9. The sulfate cracking device according to claim 1, characterized in that: Also includes: A plurality of material lifting plates (15) are arranged at intervals in the furnace tube (5).

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