Ultra-large fluidized bed type reaction kettle

Abstract

The utility model discloses an ultra-large fluidized bed type reaction kettle. The ultra-large fluidized bed type reaction kettle comprises a reaction kettle main body and two stiffening plate groups, the reaction kettle main body comprises a cylindrical base body, a top cover covering the top end of the base body, and a base connected with the base body; a filter is arranged in the base; the diameter of the base body is 140-155 m, a reaction cavity is formed in the reaction kettle main body, a water inlet, a feed port and an acid inlet are formed in the top of the reaction kettle main body, an acid discharge port and a sand discharge port are formed in the bottom of the reaction kettle main body, and the filter is arranged above the acid discharge port, communicated with the reaction cavity and used for filtering a pickling solution; the two stiffening plate sets are arranged corresponding to the top and the middle of the base body respectively. Each stiffening plate is a steel plate with the thickness ranging from 11.5 mm to 12.5 mm, in the circumferential direction of the base body, the distance between every two adjacent stiffening plates in the same stiffening plate set ranges from 0.45 m to 0.55 m, and the number of the stiffening plates in the same stiffening plate set ranges from 18 to 22. Through the arrangement of the stiffening plate group matched with the base body, the structural strength of the ultra-large fluidization type reaction kettle can be improved, and the production safety is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettles, in particular to an ultra-large fluidized bed reaction kettle. Background Art

[0002] Quartz sand is a common granular form of the mineral quartz. Its main component is silicon dioxide (SiO2). Its particles are polygonal, hard, and have the characteristics of high hardness, high melting point and corrosion resistance. Quartz sand has various colors, such as transparent, white, gray, yellow, etc. Quartz sand is widely used in industrial and construction fields, such as the construction industry, glass industry, electronics industry, coatings and paint industries, etc.

[0003] In order to obtain higher purity quartz sand, quartz sand acid washing and purification technology is usually used to remove impurities and organic matter in quartz sand. This technology mainly includes the following steps:

[0004] Pickling: react quartz sand with an acidic solution such as dilute sulfuric acid or hydrochloric acid to remove impurities and organic matter on the surface of quartz sand;

[0005] Water washing: Wash the acid-washed quartz sand repeatedly with clean water to remove the residual acid solution and acidic substances;

[0006] Drying: Dry the washed quartz sand to remove moisture and achieve the required dryness;

[0007] Through the quartz sand pickling and purification technology, the purity and quality of quartz sand can be improved, making it more suitable for the needs of various application fields.

[0008] However, the current quartz sand pickling system is not yet mature, especially the ultra-large quartz sand pickling fluidized bed reactor, which has very high requirements on the structural strength of the reactor. Utility Model Content

[0009] The utility model aims to provide an ultra-large fluidized bed reactor with high structural strength.

[0010] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0011] An ultra-large fluidized bed reactor, comprising:

[0012] The reactor body comprises a base, a top cover covering the top of the base, and a base connected to the bottom of the base; a filter is arranged in the base; the base is cylindrical, with a diameter of 140 to 155 μm; a reaction chamber is formed in the reactor body, and a water inlet, a feed inlet, and an acid inlet are all arranged on the top cover, and an acid discharge port and a sand discharge port are all arranged on the base, which are connected to the reaction chamber respectively;

[0013] Two stiffening plate groups are respectively arranged at the top and the middle of the base. The 18 to 22 stiffening plates in each stiffening plate group are circumferentially arranged around the base, and the spacing between two adjacent stiffening plates in the circumferential direction of the base is 0.45m to 0.55m. In the axial direction of the base, the stiffening plates in each stiffening plate group are located at the same height, and the stiffening plates are steel plates with a thickness of 11.5mm to 12.5mm.

[0014] Furthermore, the diameter of the base is 150 mm, the thickness of the stiffening plate is 12 mm, the number of stiffening plates in each stiffening plate group is 20, and the distance between two adjacent stiffening plates is 0.5 m.

[0015] Furthermore, it also includes a quartz sand supporting plate, two supporting frames, an overflow acid pipeline and an acid supplement pipeline, all of which are laterally extended and arranged in the base; the quartz sand supporting plate is located between the two supporting frames; the supporting frame has a grid structure and is against the inner wall of the reaction chamber, and the overflow acid pipeline and the acid supplement pipeline are supported by the two supporting frames respectively; an acid overflow port and an acid supplement port are opened on the side wall of the base, the position of the acid supplement port is lower than the position of the acid overflow port, the acid supplement pipeline is connected to the acid supplement port, the overflow acid pipeline is connected to the overflow acid port, an acid outlet hole is opened on the acid supplement pipeline facing away from the quartz sand supporting plate, and an acid overflow hole facing the top cover is opened on the acid overflow pipeline.

[0016] Furthermore, it also includes a radar level meter, which is arranged in the acid overflow pipeline.

[0017] Further, the interiors of the acid supply pipeline are detachably connected to each other, and / or the interiors of the acid overflow pipeline are detachably connected to each other, and / or the acid supply pipeline is detachably connected to the acid supply port, and / or the acid overflow pipeline is detachably connected to the acid overflow port.

[0018] Furthermore, the top cover includes a plurality of sub-cover plates that are detachably connected to each other.

[0019] Furthermore, a nano-insulating felt heat preservation layer is provided on the outer wall of the reactor body.

[0020] Furthermore, a wear-resistant lining is provided on the inner side wall of the base, and the wear-resistant lining is fixed by a stud and a rubber-coated nut. The outer end of the stud is welded to the inner side wall of the base, and the inner end is locked by the rubber-coated nut.

[0021] Furthermore, the wear-resistant lining plate includes a plurality of sub-lining plates, and the joint between two adjacent sub-lining plates is filled with high-strength silicone sealant.

[0022] Furthermore, a plurality of auxiliary acid discharge ports, spare acid overflow ports and spare acid replenishment ports are provided on the side wall of the substrate.

[0023] The technical solution of the utility model has the following advantages:

[0024] 1. The super-large fluidized bed reactor provided by the utility model comprises: a reactor body, comprising a substrate, a top cover covering the top of the substrate, and a base connected to the bottom of the substrate; a filter is arranged in the base; the substrate is cylindrical, with a diameter of 140m to 155m; a reaction chamber is formed in the reactor body, and a water inlet, a feed inlet, and an acid inlet are all arranged on the top cover, and an acid discharge port and a sand discharge port are all arranged on the base, which are connected to the reaction chamber respectively; two stiffening plate groups are respectively arranged at the top and the middle of the substrate, and 18 to 22 stiffening plates in each stiffening plate group are arranged circumferentially around the substrate, and the spacing between two adjacent stiffening plates in the circumferential direction of the substrate is 0.45m to 0.55m, and in the axial direction of the substrate, the stiffening plates in each stiffening plate group are located at the same height, and the stiffening plates are steel plates with a thickness of 11.5mm to 12.5mm. By arranging a stiffening plate group adapted to the base body, the structural strength of the super-large fluidized bed reactor can be improved, thereby improving production safety.

[0025] 2. The super-large fluidized bed reactor provided by the utility model has a base diameter of 150m, a stiffening plate thickness of 12mm, 20 stiffening plates in the same stiffening plate group, and a spacing of 0.5m between two adjacent stiffening plates. By matching the base diameter, stiffening plate thickness and number, the structural strength of the super-large fluidized bed reactor can be further improved, thereby further improving production safety.

[0026] 3. The super-large fluidized bed reactor provided by the utility model also includes a quartz sand bearing plate, two support frames, an overflow acid pipeline and an acid supplement pipeline, all of which are laterally extended and arranged in the base body; the quartz sand bearing plate is located between the two support frames; the support frame has a grid structure and is against the inner wall of the reaction chamber, so that the arrangement of the two support frames can further improve the structural strength of the reactor; the overflow acid pipeline and the acid supplement pipeline are supported by a support frame respectively, so that the overflow acid pipeline and the acid supplement pipeline can be further stabilized, and an overflow acid pipeline is provided on the side wall of the base The acid supply port and the acid filling port are located lower than the acid overflow port. The acid supply pipeline is connected to the acid supply port, and the acid overflow pipeline is connected to the acid overflow port. In this way, acid can be added to the reaction chamber through the acid supply pipeline to improve the distribution uniformity of the pickling liquid. An acid outlet hole facing away from the quartz sand supporting plate is arranged on the acid supply pipeline. The setting of the acid outlet hole can further improve the distribution uniformity of the pickling liquid and prevent the quartz sand from clogging the acid outlet hole. An acid overflow hole facing the top cover is arranged on the acid overflow pipeline. In this way, the risk of the acid overflow hole being blocked by the quartz sand can be reduced.

[0027] 4. The ultra-large fluidized bed reactor provided by the utility model has a radar level meter in the acid overflow pipeline, which can reduce the risk of the radar level meter shifting due to the impact of quartz sand and reduce the influence of impurities such as quartz sand on the radar level meter.

[0028] 5. The ultra-large fluidized bed reactor provided by the utility model has an acid-feeding pipeline and an acid-feeding port that are detachably connected, and an acid-overflowing pipeline and an acid-overflowing port that are detachably connected. This makes it easy to replace and repair the acid-feeding pipeline and the acid-overflowing pipeline, reducing downtime. The acid-feeding pipeline and the acid-overflowing pipeline are detachably connected to each other, which can reduce maintenance and replacement costs.

[0029] 6. The ultra-large fluidized bed reactor provided by the utility model has an outer wall of the reactor body further provided with a nano-insulation felt insulation layer made of nano-insulation felt to keep the temperature in the reaction chamber constant, ensure the temperature stability during the reaction process, and thus ensure the quality stability of the product, and can improve energy utilization efficiency and reduce production costs.

[0030] 7. The super-large fluidized bed reactor provided by the utility model has a top cover comprising a plurality of sub-cover plates that can be detachably connected to each other, so that the sub-cover plates can be easily repaired and replaced.

[0031] 8. The ultra-large fluidized bed reactor provided by the utility model has a wear-resistant lining on the inner wall of the base, which is fixed by studs and rubber-coated nuts, and the outer ends of the studs are welded to the inner wall of the base, so that the pickling liquid can be effectively prevented from corroding and wearing the inner wall of the base.

[0032] 9. The super-large fluidized bed reactor provided by the utility model has the joints between two adjacent sub-lining plates filled with high-strength silicone sealant. This sealing method can effectively prevent the leakage of pickling liquid. On the one hand, it prevents the pickling liquid from corroding the reactor. On the other hand, it plays the role of iron prevention and isolation, ensuring the purity and stability of the pickling process.

[0033] 10. The ultra-large fluidized bed reactor provided by the utility model has a plurality of auxiliary acid discharge ports, spare acid overflow ports and spare acid replenishing ports on the side wall of the reactor body near the bottom. The auxiliary acid discharge ports are connected to the reaction chamber. The auxiliary acid discharge ports can cooperate with the acid discharge ports to accelerate the discharge of the pickling liquid. The spare acid overflow ports can be opened when needed to discharge the pickling liquid, and the spare acid replenishing ports can be opened when needed to replenish the pickling liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 It is a side view of the reaction kettle in the embodiment of the utility model;

[0036] Figure 2 A top view of a reaction kettle in an embodiment of the utility model;

[0037] Figure 3 This is a bottom view of the reaction kettle in the embodiment of the utility model;

[0038] Figure 4 A top view of the top cover in the embodiment of the utility model;

[0039] Figure 5 It is a schematic diagram of the buckle structure in the embodiment of the utility model;

[0040] Figure 6 It is a top view schematic diagram of the first support frame and the overflow acid pipeline in the embodiment of the utility model;

[0041] Figure 7 It is a top view schematic diagram of the second support frame and the acid replenishment pipeline in the embodiment of the utility model;

[0042] Figure 8 It is a cross-sectional schematic diagram of the cooperation between the wear-resistant lining plate and the reactor body in the embodiment of the utility model;

[0043] Fig. 9 It is a cross-sectional schematic diagram of the cooperation between the wear-resistant lining plate and the reactor body in the embodiment of the utility model;

[0044] Fig.10 It is an enlarged schematic diagram of the filter in the embodiment of the utility model;

[0045] Fig.11 It is a bottom view schematic diagram of the filter in the embodiment of the utility model.

[0046] Description of reference numerals:

[0047] 1. Reactor body; 10. Base; 100. Acid overflow port; 100a. Spare acid overflow port; 101. Acid replenishment port; 101a. Spare acid replenishment port; 102. Auxiliary acid discharge port; 11. Wear-resistant lining plate; 111. Studs; 112. Rubber-coated nuts; 113. Welding seam; 12. Top cover; 120. Buckle structure; 121. Water inlet; 122. Acid inlet; 123. Feed inlet; 124. Straight ladder entrance; 125. Level meter connection 126, inspection hole; 127, thermometer interface; 13, base; 131, filter; 1311, hole; 132, acid discharge port; 133, sand discharge port; 134, spare acid discharge port; 135, spare sand discharge port; 136, spare flushing port; 14, stiffening plate; 15, first support frame; 16, overflow acid pipeline; 17, second support frame; 18, acid supply pipeline; 181, main acid supply pipeline; 182, branch acid supply pipeline. DETAILED DESCRIPTION

[0048] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] 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 indirectly connected 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 according to specific circumstances.

[0051] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] like Figures 1 to 11 As shown, the utility model provides an ultra-large fluidized bed reactor (hereinafter referred to as reactor), including a reactor body 1 and two stiffening plate groups. The reactor body 1 includes a base 10, a top cover 12 covering the top of the base 10, and a base 13 connected to the bottom of the base 10. A filter 131 is arranged in the base 13. The base 10 is cylindrical with a diameter of 140m to 155m. The base 10 is made of Q355B material with a thickness of 10mm and a width of 2m.

[0053] A reaction chamber is formed in the reactor body 1, and a water inlet 121, a feed inlet 123 and an acid inlet 122 are provided on the top of the reactor body 1 (specifically on the top cover 12), and an acid discharge port 132 and a sand discharge port 133 are provided on the bottom (specifically on the base 13). The water inlet 121, the feed inlet 123, the acid inlet 122, the acid discharge port 132 and the sand discharge port 133 are respectively connected to the reaction chamber. The filter 131 is arranged above the acid discharge port 132, connected to the reaction chamber, and is used to filter the pickling liquid.

[0054] Two stiffening plate groups are respectively arranged corresponding to the top and the middle of the reactor body 1. Each stiffening plate group includes a plurality of stiffening plates 14 circumferentially arranged on the outer wall of the reactor body 1, and the stiffening plates 14 are steel plates with a thickness of 11.5 mm to 12.5 mm. In the circumferential direction of the base 10, the spacing between two adjacent stiffening plates 14 in the same stiffening plate group is 0.45 m to 0.55 m, and the number of stiffening plates 14 in the same stiffening plate group is 18 to 22. By setting the stiffening plate group adapted to the size of the base 10, the structural strength of the super-large fluidized reactor can be improved, thereby improving production safety.

[0055] Furthermore, the diameter of the base 10 is 150 mm, the thickness of the stiffening plate 14 is 12 mm, the number of stiffening plates 14 in the same stiffening plate group is 20, and the multiple stiffening plates 14 in the same stiffening plate group are arranged at equal intervals, and the interval between two adjacent stiffening plates 14 is 0.5 m. By matching the diameter of the base 10, the thickness of the stiffening plates 14, and the number, the structural strength of the super-large fluidized reactor can be further improved, thereby further improving production safety. In addition, the multiple stiffening plates 14 in the same stiffening plate group are located at the same height.

[0056] Furthermore, the reactor further comprises a quartz sand bearing plate (not shown), two support frames having a grid structure (such as Figure 6 and Figure 7 As shown, for the convenience of explanation, the two support frames are defined as a first support frame 15 and a second support frame 17, an overflow acid pipeline 16 (such as Figure 6 As shown) and the acid supply pipeline 18 (as shown Figure 7As shown). The quartz sand bearing plate, the first support frame 15 and the second support frame 17 are all arranged transversely in the base 10, and are all against the inner wall of the reaction chamber, and are detachably connected to the inner wall of the reaction chamber. When the wear-resistant lining 11 described below is provided on the inner side of the base 10, the first support frame 15 and the second support frame 17 are against the wear-resistant lining 11. In this way, the structural strength of the reactor can be further improved by means of the first support frame 15 and the second support frame 17. An overflow acid port 100 and an acid supplement port 101 are provided on the side wall of the reactor body 1. The overflow acid pipeline 16 is connected to the overflow acid port 100. The acid supplement pipeline 18 is connected to the acid supplement port 101. In the axial direction of the base 10, the position of the overflow acid port 100 is higher than the position of the acid supplement port 101. The quartz sand bearing plate is located between the first support frame 15 and the second support frame 17. The first support frame 15 supports the overflow acid pipeline 16, and the second support frame 17 supports the acid supplement pipeline 18. The acid supply pipeline 18 includes a main acid supply pipeline 181 and a plurality of branch acid supply pipelines 182 that are detachably connected, and the main acid supply pipeline 181 is connected to the acid supply port 101. The plurality of branch acid supply pipelines 182 are respectively connected to both sides of the main acid supply pipeline 181, so that the number of acid supply ports 101 opened on the side wall of the reactor body 1 can be reduced, and the influence of the opening of the acid supply port 101 on the structural strength of the reactor can be reduced. The main acid supply pipeline 181 and the branch acid supply pipeline 18 are both provided with a plurality of acid outlet holes, and the openings of the acid outlet holes are facing away from the quartz sand bearing plate. The plurality of acid outlet holes are evenly arranged so that the pickling liquid can be more evenly transported to the reaction area. This uniform material transportation helps to reduce the concentration gradient of the pickling liquid during the reaction process and prevent the concentration of the local pickling liquid from being too high, thereby helping to maintain the ideal reaction temperature range and avoid uncontrolled heat accumulation, thereby further ensuring the stability and uniformity of the reaction, improving the reaction efficiency, and ultimately improving the product quality. A spare acid replenishment port 101a is provided next to the acid replenishment port 101. A spare acid overflow port 100a is provided next to the acid overflow port 100. The spare acid overflow port 100a can be opened when needed to discharge the pickling solution, and the spare acid replenishment port 101a can be opened when needed to supplement the pickling solution.

[0057] Furthermore, the acid supply line 18 is detachably connected to the acid supply port 101, and the acid overflow line 16 is detachably connected to the acid overflow port 100, so that the acid supply line 18 and the acid overflow line 16 can be easily replaced and repaired, thereby reducing downtime. In addition, this detachable nature enables the user to flexibly adjust the configuration of the reactor to adapt to different process requirements, thereby improving the adaptability and customizability of the equipment. The acid overflow line 16 includes a detachably connected main acid overflow line and a plurality of branch acid overflow lines.

[0058] Furthermore, if Figure 2 , Figure 4 and Figure 5As shown, the top cover 12 is detachably connected to the base 10, and the top cover 12 includes a plurality of sub-cover plates, which are distributed in a criss-cross pattern and connected together by a buckle structure 120, so that the sub-cover plates can be easily repaired and replaced.

[0059] Specifically, Figure 2 As shown, the top cover 12 is provided with three inspection holes 126, a radar level meter interface 125, three water inlets 121, a vertical ladder entrance 124 (cross section is 700mm×700mm square), an acid inlet 122, a feed inlet 123, and a thermometer interface 127. The inspection hole 126 is used for daily inspection and maintenance. The surface of the vertical ladder is lined with a protective layer made of ultra-high molecular polyethylene material, which can effectively prevent and isolate iron, thereby improving the purity of quartz sand, and at the same time can make the vertical ladder anti-corrosion and wear-resistant, and extend the service life of the vertical ladder.

[0060] Specifically, Figure 3 As shown, a spare flushing port 136 (DN80 flange blind plate), a spare sand discharge port 135 (sand discharge port 133 is controlled by DN250 manual hose valve), a spare acid discharge port 134 (DN400 blind plate), the aforementioned acid discharge port 132 (with a diameter of 800mm), and the aforementioned sand discharge port 133 (controlled by DN250 electric hose valve) are provided on the bottom wall. The acid discharge port 132 can be used to recover the pickling liquid, and the collected pickling liquid can be used for pickling again after being heated to achieve the purpose of recycling.

[0061] Furthermore, the reactor further includes a radar level meter (not shown), which is arranged in the overflow acid pipeline 16, so that the risk of the radar level meter being displaced due to the impact of quartz sand and the influence of impurities such as quartz sand on the radar level meter can be reduced. Specifically, the wiring of the radar level meter passes through the radar level meter interface 125 on the top cover 12 to be connected to the control display device, so as to obtain the material level in the reaction chamber in real time.

[0062] Furthermore, the reactor also includes a nano-insulation felt insulation layer (not shown), which is attached to the outer wall of the reactor body 1 to keep the temperature in the reaction chamber constant, ensure the temperature stability during the reaction process, and then ensure the quality stability of the product, improve energy efficiency, and reduce production costs. Among them, the nano-insulation felt is a soft, hydrophobic, high-temperature stable, fire-retardant, and powder-free thermal insulation felt composited with nanoporous aerogel and inorganic fiber material. The special process makes the aerogel felt have extremely low thermal conductivity (lower than still air), low density, excellent overall hydrophobicity, and a fire retardant grade that can reach the A1 standard. It is a non-combustible material, and there is no powder shedding during transportation and use. It is green and environmentally friendly. It also has excellent sound insulation and noise reduction, and anti-pressure and vibration reduction characteristics.

[0063] Key performance indicators

[0064]

[0065] Furthermore, the reactor further comprises a plurality of studs 111, rubber-coated nuts 112, and a wear-resistant lining plate 11. The wear-resistant lining plate 11 is made of ultra-high molecular polyethylene material and is arranged on the inner side wall of the substrate 10, so that the pickling liquid can be effectively prevented from corroding and wearing the inner side wall of the substrate 10. The wear-resistant lining plate 11 comprises a plurality of sub-lining plates, and one of the two adjacent sub-lining plates is provided with a lug portion, and the other sub-lining plate is provided with a recessed portion, and the lug portion is embedded in the recessed portion. The outer end of the stud 111 passes through the lug portion and the corresponding recessed portion, and is welded to the inner wall of the substrate by ceramic ring shielded arc welding to form a weld 113. In this way, the high temperature generated by welding can be avoided from affecting the wear-resistant lining 11 and the risk of fire can be reduced. By tightening the inner end of the stud 111 with the rubber-coated nut 112, the wear-resistant lining 11 and the substrate 10 can be reliably fixed together. Moreover, since the outer end of the stud 111 does not enter the inner wall of the reaction chamber, the structural strength of the substrate 10 will not be damaged, thereby further improving the structural strength of the reactor.

[0066] Furthermore, the joints between two adjacent sub-lining plates are filled with high-strength silicone sealant. This sealing method can effectively prevent the leakage of the pickling solution. On the one hand, it prevents the pickling solution from corroding the inner wall of the reaction chamber. On the other hand, it plays a role in preventing and isolating iron, ensuring the purity and stability of the pickling process.

[0067] Furthermore, a plurality of auxiliary acid discharge ports 102 are provided on the side wall of the substrate 10 near the bottom, and the auxiliary acid discharge ports 102 are connected to the reaction chamber, so that the discharge of the pickling liquid can be accelerated in cooperation with the acid discharge ports 132 .

[0068] Further, the filter 131 is used to filter the pickling liquid entering the acid discharge port 132 to effectively remove large particles of impurities, thereby improving the purity of the pickling liquid, reducing the adverse effects of impurities on product quality, and ultimately improving the purity and quality of the product to meet high-standard production requirements. The filter 131 is detachably connected to the substrate 10 to facilitate maintenance and installation of the filter 131. The detachable nature not only provides a convenient maintenance method, but also reduces the difficulty of operation when replacing and cleaning the filter 131, improves the flexibility of the entire system, and also provides the possibility for technical improvement and upgrading. The operator can more easily upgrade the filter 131 to adopt better materials or designs, thereby continuously optimizing the filtering effect, extending the service life of the equipment, and improving production efficiency. The filter 131 is funnel-shaped to increase the filtering area, and a plurality of evenly distributed holes 1311 are opened on the surface of the filter cloth. The design of the holes 1311 helps to stabilize the filter cloth on the one hand, and on the other hand, it can form a uniform filtering channel to ensure that the pickling liquid can flow evenly during the filtering process, thereby improving the filtering efficiency. At the same time, the filter cloth material can be replaced according to different acid liquid components and requirements, so it has flexibility and can adapt to different process conditions. In addition, since the holes 1311 are evenly distributed, it helps to prevent excessive local pressure and ensure the stability and life of the filter 131. This flexibility allows the filter cloth material to be replaced as needed during the production process to adapt to different pickling liquid components and processing requirements, thereby improving the adaptability and versatility of the system.

[0069] Furthermore, a temperature detection point is provided on the top of the reactor body 1 for real-time monitoring of the temperature inside the reactor body 1 , thereby monitoring the reaction process of pickling.

[0070] The super-large fluidized bed reactor provided by the utility model has a stable and reliable structure, which can withstand the high-load operation of large-tonnage production lines; secondly, the reactor has the characteristics of large processing capacity and can meet the needs of large-scale production; in addition, the reactor adopts a fluidized bed design, which has good fluidity, can ensure the full contact between the pickling liquid and the quartz sand material, and improve the pickling efficiency; finally, whether it is processing production lines of different scales or coping with different process requirements, the reactor can respond flexibly to achieve efficient and stable production. At the same time, the reactor also has good safety performance and operability, which can meet the requirements of high-intensity and continuous operation. This makes the super-large fluidized bed reactor of quartz sand have lower energy consumption and higher economic benefits.

[0071] In addition, the first support frame 15 and the second support frame 17 in this embodiment are respectively against the inner wall of the reaction chamber, providing reliable support for the reactor, ensuring the stability of the reactor, and thus ensuring the safe conduct of the reaction. At the same time, the acid supply pipeline 18 is arranged horizontally and vertically at the bottom to form a relatively uniform pickling liquid circulation channel, which can effectively disperse the pickling liquid during the reaction process to prevent local concentration from being too high. Accordingly, it helps to avoid the generation of local hot spots, reduce the non-uniformity in the reaction, help maintain the ideal reaction temperature range, avoid uncontrolled heat accumulation, and thus improve product quality and reaction consistency; secondly, the pickling liquid injected from the upper acid inlet 122 and the pickling liquid supplemented from the lower acid supply port 101 form a stacked pickling liquid supply, which effectively increases the reaction contact area. This layered design helps to improve the reaction efficiency, ensure that the reaction substances are fully contacted, and promote the full conduct of the reaction.

[0072] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An ultra-large fluidized bed reactor, characterized in that: include: A reactor body (1) comprises a base (10), a top cover (12) covering the top of the base (10), and a base (13) connected to the bottom of the base (10); a filter (131) is arranged in the base (13); the base (10) is cylindrical, with a diameter of 140 to 155 μm; a reaction chamber is formed in the reactor body (1), a water inlet (121), a feed inlet (123), and an acid inlet (122) are all arranged on the top cover (12), and an acid discharge port (132) and a sand discharge port (133) are all arranged on the base (13), and are connected to the reaction chamber respectively; Two stiffening plate groups are respectively arranged at the top and the middle of the base (10); 18 to 22 stiffening plates (14) in each stiffening plate group are arranged circumferentially around the base (10); and the spacing between two adjacent stiffening plates (14) in the circumferential direction of the base (10) is 0.45m to 0.55m; in the axial direction of the base (10), the stiffening plates (14) in each stiffening plate group are located at the same height; and the stiffening plates (14) are steel plates with a thickness of 11.5mm to 12.5mm.

2. The super-large fluidized bed reactor according to claim 1, characterized in that: The diameter of the base (10) is 150 mm, the thickness of the stiffening plate (14) is 12 mm, there are 20 stiffening plates (14) in each stiffening plate group, and the distance between two adjacent stiffening plates (14) is 0.5 m.

3. The ultra-large fluidized bed reactor according to claim 1 or 2, characterized in that: The invention also comprises a quartz sand bearing plate, two support frames, an acid overflow pipeline (16) and an acid supplement pipeline (18) which are all extended transversely in the base (10); the quartz sand bearing plate is located between the two support frames; the support frame has a grid structure and abuts against the inner wall of the reaction chamber; the acid overflow pipeline (16) and the acid supplement pipeline (18) are respectively supported by one of the support frames; an acid overflow port (100) and an acid supplement port (101) are provided on the side wall of the base (10); the acid supplement port (101) is located at a position lower than the position of the acid overflow port (100); the acid supplement pipeline (18) is connected to the acid supplement port (101); the acid overflow pipeline (16) is connected to the acid overflow port (100); an acid outlet hole is provided on the acid supplement pipeline (18) which is facing away from the quartz sand bearing plate; and an acid overflow hole is provided on the acid overflow pipeline (16) which is facing the top cover (12).

4. The ultra-large fluidized bed reactor according to claim 3, characterized in that: It also comprises a radar level meter, wherein the radar level meter is arranged in the acid overflow pipeline (16).

5. The ultra-large fluidized bed reactor according to claim 3, characterized in that: The interiors of the acid-supplementing pipeline (18) are detachably connected to each other, and / or the interiors of the acid-supplementing pipeline (16) are detachably connected to each other, and / or the acid-supplementing pipeline (18) is detachably connected to the acid-supplementing port (101), and / or the acid-supplementing pipeline (16) is detachably connected to the acid-supplementing port (100).

6. The ultra-large fluidized bed reactor according to any one of claims 1-2 or 4-5, characterized in that: The top cover (12) comprises a plurality of sub-cover plates which are detachably connected to each other.

7. The ultra-large fluidized bed reactor according to any one of claims 1-2 or 4-5, characterized in that: A nano-insulating felt heat preservation layer is provided on the outer wall of the reactor body (1).

8. The ultra-large fluidized bed reactor according to any one of claims 1-2 or 4-5, characterized in that: A wear-resistant lining (11) is provided on the inner side wall of the base (10), and the wear-resistant lining (11) is fixed by a stud (111) and a rubber-coated nut (112). The outer end of the stud (111) is welded to the inner side wall of the base (10), and the inner end is locked by the rubber-coated nut (112).

9. The super-large fluidized bed reactor according to claim 8, characterized in that: The wear-resistant lining plate (11) comprises a plurality of sub-lining plates, and the joints between two adjacent sub-lining plates are filled with high-strength silicone sealant.

10. The ultra-large fluidized bed reactor according to any one of claims 1-2 or 4-5, characterized in that: A plurality of auxiliary acid discharge ports (102), spare acid overflow ports (100a) and spare acid replenishment ports (101a) are provided on the side wall of the base (10).

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