A system for processing gypsum powder using desulfurized gypsum and heat energy

Abstract

The present invention relates to the field of gypsum powder preparation, and discloses a system for processing gypsum powder by using desulfurized gypsum and heat energy, which is used to connect the flue gas exhaust port of a fluidized bed furnace body and a cyclone dust removal system. It includes an outer pipe body, and a flue gas passage is formed inside the outer pipe body. A plurality of loading frames are arranged in sequence along the flow direction of the flue gas in the flue gas passage. Each loading frame is loaded with a water-absorbing medium for the flue gas to pass through. One end of the flue gas passage is connected to the flue gas exhaust port, and the other end of the flue gas passage is connected to the cyclone dust removal system. When the flue gas passes through the loading frame, the water-absorbing medium in the loading frame absorbs the moisture in the flue gas, preventing the flue gas with excessive moisture content from entering the cyclone dust collector. When the flue gas enters the cyclone dust collector, since the inner wall temperature of the cyclone dust collector is lower than the temperature of the fluidized bed furnace, the gaseous water vapor in the flue gas liquefies into water droplets on the inner wall of the cyclone dust collector and contacts the gypsum powder in the flue gas, causing the dried gypsum powder to absorb water again and condense and harden into dihydrate gypsum, which affects the quality of the product.

Description

Technical Field

[0001] The present invention relates to the field of gypsum powder preparation, and particularly to a system for processing gypsum powder using desulfurized gypsum and heat energy. Background Art

[0002] Desulfurized gypsum is a by-product of wet flue gas desulfurization in industry. China is a major coal-fired power country, with a huge discharge of desulfurized gypsum, which has piled up in thermal power plants and has a potentially serious impact on the environment. The main way to utilize desulfurized gypsum resourcefully is to transform it into hemihydrate gypsum and use it as a cementitious material for building materials; the calcination method is the most commonly used industrial method for preparing hemihydrate gypsum, especially the method of using a fluidized bed furnace for calcination to prepare gypsum powder, which is widely used in industrial production.

[0003] For example, the patent with the publication number CN220520392U and the publication date of February 23, 2024 discloses a gypsum powder calcination fluidized bed furnace, which includes a furnace body, an inlet valve is arranged on the upper part of the furnace body and is communicated with the furnace body; a fluidizing device is arranged at the bottom of the furnace body to blow air evenly into the furnace body; the fluidizing device includes a air distribution plate, slideways are evenly distributed on the air distribution plate, tube bodies are slidably inserted in the slideways, the tube bodies are in a stepped column shape, and the diameter of the lower end of the tube body is larger than that of the slideway, a cap with a diameter larger than that of the slideway is arranged at the upper end of the tube body, an air outlet channel is arranged around the side wall of the tube body, when the tube body is not lifted by air pressure, the air outlet channel is located in the slideway; in the above structure, the fluidizing device has a tube body that can be lifted. When blowing air, the tube body rises, and the air flows out from the tube body to fluidize the material. When not blowing air, the tube body has no air flow support and falls back into the slideway, and the air outlet channel on the tube body is blocked by the slideway wall, and the material will not enter the pipeline through the tube body, thus eliminating the situation of material accumulation and pipeline blockage.

[0004] Existing fluidized bed furnaces usually have an additional cyclone dust collector connected. The cyclone dust collector is mainly used to reduce the dust and flue gas in the fluidized bed furnace. However, due to the high water content of desulfurized gypsum, when the fluidized bed furnace calcines desulfurized gypsum, the water in the desulfurized gypsum evaporates into water vapor. When the cyclone dust collector evacuates the flue gas in the fluidized bed furnace, since the inner wall temperature of the cyclone dust collector is lower than that of the fluidized bed furnace, the gaseous water vapor in the flue gas is easily liquefied into water droplets on the inner wall of the cyclone dust collector. When the gypsum powder in the flue gas contacts the water droplets, since the product after calcination of desulfurized gypsum has hydration activity, the gypsum powder is easily re-solidified into dihydrate gypsum after contacting water, resulting in a small amount of dihydrate gypsum still existing in the finished product and affecting the quality of the product. Summary of the Invention

[0005] The purpose of the present invention is to provide a system for processing gypsum powder using desulfurized gypsum and heat energy to solve the above deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A system for processing gypsum powder using desulfurized gypsum and thermal energy, which is used to connect the flue gas outlet of a boiling furnace body and a cyclone dust removal system, and comprises an outer tube body, a flue gas channel is formed inside the outer tube body, a plurality of loading frames are sequentially arranged in the flue gas flow direction in the flue gas channel, each loading frame is loaded with a water absorbing medium for the flue gas to pass through, one end of the flue gas channel is connected to the flue gas outlet, and the other end of the flue gas channel is connected to the cyclone dust removal system.

[0008] As mentioned above, a smoke inlet is opened at the center of the bottom of the outer tube body, and the smoke inlet is connected to the smoke exhaust port. A plurality of smoke exhaust ports are opened at the edge of the top of the outer tube body. The plurality of smoke exhaust ports are arranged at intervals along the circumference of the outer tube body. The smoke in the boiling furnace body enters into the smoke channel through the smoke inlet, and the smoke passes through the loading frame in the smoke channel and enters into the cyclone dust removal system from the smoke exhaust port.

[0009] As mentioned above, the surface of the loading frame is hollowed out.

[0010] The outer tube body is divided into a loading part and a discharging part by the smoke channel. The loading part is hollow and filled with unused water-absorbing medium. The discharging part is provided with a discharging cavity for storing the used water-absorbing medium in the loading frame.

[0011] As mentioned above, the bottom surface of the discharge cavity is inclined downward, and an opening is provided at the bottom of the discharge cavity and is connected to the outside.

[0012] As mentioned above, a plurality of make way grooves are provided on the loading part and the discharging part of the flue gas duct, and the make way grooves on the loading part and the discharging part correspond one to one. The two corresponding make way grooves on the loading part and the discharging part correspond to a loading frame, and the two ends of the loading frame are respectively inserted into the make way grooves on the loading part and the discharging part.

[0013] As mentioned above, shielding plates are provided at both the upper and lower ends of the loading frame, and the shielding plates are connected to the loading frame through traction springs. The shielding plates are used to shield the upper and lower ends of the loading frame to prevent the water-absorbing medium from leaking from the loading frame. A connecting opening is provided on the shielding plate. In the initial state, the connecting opening is staggered with the outer tube body.

[0014] As mentioned above, a driving assembly is also provided in the outer tube body, and the driving assembly is connected to multiple loading frames. The driving assembly is used to drive the multiple loading frames to reciprocate up and down in the discharge cavity. When the loading frames reciprocate up and down, the internal water absorbing medium is replaced.

[0015] As mentioned above, a trigger part is arranged in the give way groove of the smoke channel. When the loading frame moves up and down in the smoke channel, the shielding plate on the loading frame passes through the trigger part, and the shielding plate slides in a direction away from the center of the outer tube body under the action of the trigger part.

[0016] As described above, the triggering part includes a plurality of triggering wedges. There are two triggering wedges in one relief groove, and the two triggering wedges are respectively arranged at both ends of the relief groove. The two triggering wedges correspond to a shielding plate. Two adjusting wedges are installed on the side of the shielding plate away from the loading frame, and the two adjusting wedges correspond one by one to the two triggering wedges in the corresponding relief groove.

[0017] The beneficial effect of the present invention is as follows: In the above technical solution, a system for processing gypsum powder using desulfurized gypsum and heat energy provided by the present invention, by setting a loading frame equipped with a water-absorbing medium. After the desulfurized gypsum is calcined in the fluidized bed furnace body, the cyclone dust removal system works to extract the flue gas in the fluidized bed furnace body. The flue gas enters the outer pipe body through the flue gas exhaust port, and moreover, the flue gas passes through a plurality of loading frames and enters the cyclone dust removal system. When the flue gas passes through the loading frame, the water-absorbing medium in the loading frame absorbs the moisture in the flue gas, reducing the water content in the flue gas. To avoid that when the high-temperature flue gas with excessive water content enters the cyclone dust collector, due to the temperature of the inner wall of the cyclone dust collector being lower than the temperature of the fluidized bed furnace, the gaseous water vapor in the flue gas liquefies into water droplets on the inner wall of the cyclone dust collector and contacts the gypsum powder in the flue gas, causing the dried gypsum powder to absorb water again and condense and harden into dihydrate gypsum, which affects the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of a system for processing gypsum powder using desulfurized gypsum and heat energy provided by an embodiment of the present invention;

[0020] Figure 2 It is a front view structural diagram of a system for processing gypsum powder using desulfurized gypsum and heat energy provided by an embodiment of the present invention;

[0021] Figure 3 Provided by an embodiment of the present invention Figure 2 The cross-sectional view of A - A;

[0022] Figure 4 Provided by an embodiment of the present invention Figure 3 The enlarged view at B;

[0023] Figure 5 It is a schematic internal structure diagram of the outer pipe body provided by an embodiment of the present invention;

[0024] Figure 6A schematic diagram of a preferred structure of a loading frame provided in an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of a state in which a shielding plate on a loading frame provided by an embodiment of the present invention is opened;

[0026] Figure 8 A schematic diagram of the connection between the loading frame and the outer tube body provided in an embodiment of the present invention;

[0027] Figure 9 The embodiment of the present invention provides Figure 8 An enlarged schematic diagram of point C;

[0028] Figure 10 A schematic top view of a push-flattening mechanism in one side of a loading frame provided in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Boiling furnace body; 2. Smoke exhaust port; 3. Cyclone dust removal system; 4. Outer tube body; 41. Smoke channel; 411. Smoke inlet; 412. Smoke exhaust port; 413. Loading part; 414. Discharging part; 415. Discharging cavity; 416. Make way groove; 417. Guide block; 42. Loading frame; 43. Water-absorbing medium; 44. Shielding plate; 45. Connecting opening; 46. Adjusting wedge block; 47. Guide slide groove; 5. Driving assembly; 6. Triggering wedge block; 7. Pushing mechanism; 71. Driving shaft; 72. Driving gear; 73. Matching rack; 74. Rectangular spiral groove; 75. Pushing plate. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, Figure 1-10 , the present invention is further introduced in detail.

[0032] An embodiment of the present invention provides a system for processing gypsum powder using desulfurized gypsum and thermal energy, which is used to connect the flue gas outlet 2 of a boiling furnace body 1 and a cyclone dust removal system 3, and includes an outer tube body 4, a flue gas channel 41 is formed on the inner side of the outer tube body 4, and the flue gas channel 41 is sequentially arranged with a plurality of loading frames 42 along the flow direction of the flue gas, each loading frame 42 is loaded with a water absorbing medium 43 for the flue gas to pass through, one end of the flue gas channel 41 is connected to the flue gas outlet 2, and the other end of the flue gas channel 41 is connected to the cyclone dust removal system 3.

[0033] Specifically, the fluidized bed furnace body 1 is vertically arranged, and the flue gas discharge port 2 is usually opened at the top of the fluidized bed furnace body 1. The fluidized bed furnace body 1 is used for calcining desulfurized gypsum to remove the moisture in the desulfurized gypsum, so that the desulfurized gypsum forms hemihydrate gypsum. Among them, a feeding assembly is also connected to the side wall of the fluidized bed furnace body 1, and the feeding assembly is used for continuously feeding desulfurized gypsum into the fluidized bed furnace body 1. The existing feeding assembly usually consists of a feeder, a pair-roll crusher and a bucket elevator. The feeder transports the desulfurized gypsum into the pair-roll crusher, the pair-roll crusher crushes the desulfurized gypsum, and the crushed material enters the fluidized bed furnace body 1 through the bucket elevator for calcination treatment. Among them, the cyclone dust removal system 3 usually consists of a suction pipeline, a cyclone dust collector and a spray drying tower. In the prior art, the cyclone dust collector is connected to the flue gas discharge port 2 on the fluidized bed furnace body 1 through the suction pipeline. When the existing fluidized bed furnace body 1 calcines the desulfurized gypsum, the staff pours the desulfurized gypsum into the feeder, the feeder transports the desulfurized gypsum material into the pair-roll crusher, the pair-roll crusher crushes the desulfurized gypsum material, and the crushed desulfurized gypsum material enters the fluidized bed furnace body 1 through the bucket elevator. The fluidized bed furnace body 1 calcines the desulfurized gypsum entering its interior to remove the moisture in the desulfurized gypsum and form hemihydrate gypsum (i.e., gypsum powder). When the fluidized bed furnace body 1 calcines the desulfurized gypsum, flue gas will be generated, and the flue gas will contain gypsum powder. In order to prevent the excessive flue gas in the fluidized bed furnace body 1 from increasing the internal pressure and affecting the normal use of the fluidized bed furnace body 1, the cyclone dust collector in the cyclone dust removal system 3 starts to work. The cyclone dust collector extracts the dust and flue gas in the fluidized bed furnace body 1 through the suction pipeline, and the extracted flue gas enters the spray drying tower. The spray drying tower dries the gypsum powder to complete the preparation process of the gypsum powder.

[0034] Currently, due to the high water content of the desulfurized gypsum, when the desulfurized gypsum is calcined, the moisture in the desulfurized gypsum vaporizes. When the cyclone dust collector extracts the flue gas and dust in the fluidized bed furnace body 1, the vaporized moisture also enters the cyclone dust collector together. Since there is no heating source in the cyclone dust collector, the inner wall temperature of the cyclone dust collector is lower than the temperature of the fluidized bed furnace body 1. Therefore, when the gaseous water vapor in the flue gas enters the interior of the cyclone dust collector, it is easy to liquefy into water droplets on the inner wall of the cyclone dust collector. Since the product after calcining the desulfurized gypsum has water activation, when the dehydrated gypsum powder in the flue gas comes into contact with the water droplets again, the gypsum powder is easy to absorb water again and coagulate and harden into dihydrate gypsum, which affects the quality of the gypsum powder after calcination.

[0035] To solve the above problems, an outer pipe body 4 is further provided between the fluidized bed furnace body 1 and the cyclone dust removal system 3, that is, the suction pipeline and the flue gas discharge port 2 on the fluidized bed furnace body 1 are connected through the outer pipe body 4. A flue gas channel 41 is formed inside the outer pipe body 4. Along the flue gas flow direction, a plurality of loading frames 42 are arranged in sequence in the flue gas channel 41. Each loading frame 42 is loaded with a water absorption medium 43 for the flue gas to pass through. One end of the flue gas channel 41 communicates with the flue gas discharge port 2, and the other end of the flue gas channel 41 communicates with the cyclone dust removal system 3.

[0036] Specifically, after the existing desulfurized gypsum is calcined, the fluidized bed furnace body 1 will generate flue gas. The gypsum powder in the flue gas usually exists in a fine powder state. At this time, the particle size of the gypsum powder is small. And, the water absorption medium 43 can be selected from materials that can absorb water vapor such as modified activated carbon, polyacrylamide, silica gel, calcium chloride, molecular sieve, polymer moisture absorbent, etc. In this embodiment, the water absorption medium 43 is selected as modified activated carbon with large pores, and it is only necessary to ensure that the pores of the modified activated carbon are larger than the particle size of the gypsum powder in the fine powder state. When the flue gas containing gypsum powder runs at a high flow rate under the action of the cyclone dust removal system 3, the high-flow-rate gypsum powder flue gas can pass through the large gaps between the stacked modified activated carbon particles. This is the prior art and its principle will not be elaborated here. When it is necessary to suck the flue gas generated in the fluidized bed furnace body 1, the cyclone dust removal system 3 starts to work. Under the suction action of the cyclone dust removal system 3, the flue gas generated in the fluidized bed furnace body 1 enters the flue gas channel 41 of the outer pipe body 4 through the flue gas discharge port 2. And with the continuous suction of the cyclone dust removal system 3, the flue gas containing gypsum powder diffuses in the flue gas channel 41 of the outer pipe body 4 towards the cyclone dust removal system 3. When the flue gas containing gypsum powder diffuses, it will pass through the loading frame 42. When the flue gas passes through the loading frame 42, the flue gas will contact the water absorption medium 43 in the loading frame 42, and the water absorption medium 43 absorbs the moisture in the flue gas. As the flue gas diffuses towards the cyclone dust removal system 3, the flue gas passes through a plurality of loading frames 42, and the water absorption medium 43 in each loading frame 42 will perform a water absorption treatment on the flue gas once, thereby further reducing the moisture content in the flue gas and reducing the phenomenon that the water vapor in the flue gas liquefies when the flue gas enters the cyclone dust removal system 3, and further reducing the occurrence of the situation where the gypsum powder in the flue gas absorbs moisture and hardens into dihydrate gypsum.

[0037] Preferably, as Figure 5As shown in the figure, a smoke inlet 411 is provided at the center of the bottom of the outer pipe body 4. The smoke inlet 411 is communicated with the flue gas exhaust port 2. A plurality of smoke exhaust ports 412 are provided at the edge of the top of the outer pipe body 4 (the edge of the top of the outer pipe body 4 is also the area away from the center at the top of the outer pipe body 4. Among them, a plurality of loading frames 42 are all located in the area between the smoke inlet 411 and the smoke exhaust ports 412). The plurality of smoke exhaust ports 412 are arranged at intervals along the circumferential direction of the outer pipe body 4. The flue gas in the fluidized bed furnace body 1 enters the flue gas passage 41 through the smoke inlet 411, and the flue gas passes through the loading frames 42 in the flue gas passage 41 and enters the cyclone dust removal system 3 from the smoke exhaust ports 412; the surface of the loading frame 42 is in a hollow shape.

[0038] Specifically, in this embodiment, the loading frame 42 is integrally in a rectangular frame shape. When the flue gas diffuses inside the flue gas passage 41, no matter which direction it diffuses in, it will come into contact with the loading frame 42 for dehydration treatment, improving the dehydration efficiency of the flue gas. It should be noted that the loading frame 42 is not limited to a rectangular frame shape, and it can also be in the shape of a plate or a circular frame, etc. As long as the loading frame 42 can separate the smoke exhaust ports 412 from the smoke inlet 411, and the surface of the loading frame 42 is in a hollow shape, which is convenient for the flue gas to come into full contact with the water-absorbing medium 43 in the loading frame 42, improving the absorption effect of the moisture in the flue gas. When it is necessary to suck the flue gas generated in the fluidized bed furnace body 1, the cyclone dust removal system 3 starts to work. Under the suction of the cyclone dust removal system 3, the flue gas generated in the fluidized bed furnace body 1 enters the flue gas passage 41 of the outer pipe body 4 through the flue gas exhaust port 2, and with the continuous suction of the cyclone dust removal system 3, the flue gas containing gypsum powder diffuses around in the flue gas passage 41 of the outer pipe body 4 (that is, from the direction of the smoke inlet 411 towards the direction of the smoke exhaust ports 412). The flue gas containing gypsum powder will pass through the loading frames 42 during the diffusion process, and the water-absorbing medium 43 in the plurality of loading frames 42 performs multiple water absorption treatments on the flue gas, reducing the moisture content in the flue gas and reducing the situation where the water vapor in the flue gas liquefies when the flue gas enters the cyclone dust removal system 3 and the gypsum powder in the flue gas absorbs water and hardens into gypsum dihydrate.

[0039] Obviously, with the continuous filtration of the flue gas in the fluidized bed furnace body 1, the water-absorbing medium 43 in the loading frame 42 will reach the saturated adsorption state. At this time, the water-absorbing medium 43 in the saturated adsorption state cannot continue to adsorb the moisture in the flue gas, so the moisture in the flue gas will enter the cyclone dust removal system 3 together with the flue gas. At this time, the flue gas containing moisture is likely to liquefy in the cyclone dust removal system 3, resulting in the gypsum powder in the flue gas absorbing water again to form gypsum dihydrate, affecting the quality of the prepared gypsum powder.

[0040] In order to solve the above problems, the outer tube body 4 is divided into a feeding part 413 and a discharging part 414 by the smoke channel 41. The feeding part 413 is hollow inside to form a accommodating chamber. The accommodating chamber of the feeding part 413 is filled with unused water-absorbing medium 43. In order to facilitate the filling of unused water-absorbing medium 43 into the feeding part 413, in the present embodiment, an openable or closable feeding port is provided on the feeding part 413. The feeding port is connected to the outside of the outer tube body 4 through a pipeline. In this way, the water-absorbing medium 43 can be continuously replenished on the outside of the outer tube body 4. The unused water-absorbing medium 43 can be added to the inside of the feeding part 413 through the feeding port. In addition, the smoke exhaust port 412 is provided on the feeding part 413, wherein the discharging port 412 is provided on the feeding part 413. A discharge chamber 415 is provided in the portion 414, and the discharge chamber 415 is used to store the used water-absorbing medium 43 in the loading frame 42; the smoke inlet 411 is provided on the discharge portion 414, and the bottom surface of the discharge chamber 415 is preferably inclined downward, and the bottom end of the discharge chamber 415 is provided with an opening and is connected to the outside; wherein, shielding plates 44 are provided at both upper and lower ends of the loading frame 42, and the shielding plates 44 are connected to the loading frame 42 through a traction spring (the traction spring is not shown in the figure), and the shielding plates 44 are used to shield the openings at the upper and lower ends of the loading frame 42 to prevent the water-absorbing medium 43 from leaking from the loading frame 42, and a connecting opening 45 is provided on the shielding plate 44, and in the initial state, the connecting opening 45 is misaligned with the loading frame 42 The outer tube body 4 is also provided with a driving assembly 5, which is connected to the plurality of loading frames 42, and the driving assembly 5 is used to drive the plurality of loading frames 42 to reciprocate up and down. When the loading frames 42 reciprocate up and down, the water absorbing medium 43 inside is replaced. The driving assembly 5 can select a plurality of electrically controlled telescopic rods, which are all installed in the smoke channel 41 and located on the feeding part 413. A connecting rod is fixedly installed on the telescopic end of the electrically controlled telescopic rod, and the connecting rod connects the plurality of loading frames 42. The feeding part 413 and the discharge part 414 of the smoke channel 41 are connected to the outer tube body 4. A plurality of clearance grooves 416 are provided, and the clearance grooves 416 on the feeding part 413 and the discharging part 414 correspond one to one. The two corresponding clearance grooves 416 on the feeding part 413 and the discharging part 414 correspond to one loading frame 42. The two ends of the loading frame 42 are respectively inserted into the clearance grooves 416 of the feeding part 413 and the clearance grooves 416 on the discharging part 414 in a dynamic and sealed manner, so that it can be driven to reciprocate up and down; the clearance grooves 416 of the smoke channel 41 are all provided with trigger parts. When the loading frame 42 moves up and down in the smoke channel 41, the shielding plate 44 on the loading frame 42 passes the triggering part, and the shielding plate 44 slides in the direction away from the center of the outer tube body 4 under the action of the triggering part;The triggering part includes a plurality of triggering wedges 6. There are two triggering wedges 6 in a relief groove 416. The two triggering wedges 6 are respectively placed at both ends of the relief groove 416. The two triggering wedges 6 correspond to a baffle plate 44. Two adjusting wedges 46 are installed on the side of the baffle plate 44 away from the loading frame 42. The two adjusting wedges 46 correspond one by one to the two triggering wedges 6 in the corresponding relief groove 416. Among them, in order to facilitate the filling of materials, the inner cavity of the feeding part 413 is in a state of being interconnected with the relief groove 416 above it. The area where the inner cavity of the feeding part 413 is connected to the relief groove 416 above it is between the two triggering wedges 6 in the relief groove 416. And, a plurality of guiding blocks 417 are also arranged in the inner cavity of the feeding part 413. The plurality of guiding blocks 417 are all in a triangular structure. The plurality of guiding blocks 417 are all installed at the bottom of the inner cavity of the feeding part 413. The plurality of guiding blocks 417 form a slope inclined towards the relief groove 416. The water-absorbing medium 43 in the inner cavity of the feeding part 413 can easily enter the relief groove 416 along the guiding blocks 417.;

[0041] Specifically, in this embodiment, the discharge cavity 415 is arranged to incline downward. When the used water-absorbing medium 43 in the loading frame 42 enters the inside of the discharge cavity 415, the water-absorbing medium 43 slides downward along the slope of the discharge cavity 415. At this time, the water-absorbing medium 43 accumulates at the bottom end of the discharge cavity 415. Subsequently, the staff takes out the used water-absorbing medium 43 in the discharge cavity 415 through the opening at the bottom end of the discharge cavity 415. Obviously, in order to improve the extraction efficiency of the water-absorbing medium 43 in the discharge cavity 415, a combination of a suction pump and a collection box can also be added at the above-mentioned opening. Through the suction of the suction pump, the waste in the discharge cavity 415 (that is, the water-absorbing medium 43 that has reached the saturated adsorption state) is sucked out. The sucked waste enters the collection box, completing the automatic collection and treatment of the water-absorbing medium 43 inside the discharge cavity 415. And, in this embodiment, the whole of the loading frame 42 is in a plate shape. In the initial state, the upper and lower ends of the loading frame 42 are respectively inserted into the two corresponding relief grooves 416. The baffle plate 44 on the loading frame 42 blocks the upper and lower ends of the loading frame 42. When the cyclone dust removal system 3 works, the flue gas in the fluidized bed furnace body 1 enters the flue gas passage 41 through the smoke inlet 411. Subsequently, under the suction of the cyclone dust removal system 3, the flue gas moves from the center to the edge inside the outer pipe body 4 (that is, the flue gas moves from the smoke inlet 411 towards the smoke outlet 412). The flue gas passes through the loading frame 42, and the water-absorbing medium 43 in the loading frame 42 adsorbs the moisture in the flue gas, completing the dehydration treatment of the flue gas;

[0042] When the water-absorbing medium 43 in the loading frame 42 needs to be replaced after a long period of use, the electrically-controlled telescopic rod in the driving assembly 5 begins to extend, and under the action of the connecting rod, the multiple loading frames 42 begin to move downward toward the discharge portion 414. When the loading frame 42 enters the inside of the yielding groove 416 on the discharge portion 414, the adjusting wedge 46 on the shielding plate 44 at the bottom of the loading frame 42 abuts against the trigger wedge 6. The adjusting wedge 46 moves in the horizontal direction under the squeezing action of the trigger wedge 6. At this time, the traction spring connected to the shielding plate 44 is stretched, and the connecting rod on the shielding plate 44 is pulled. The through opening 45 is aligned with the loading frame 42, and the used water-absorbing medium 43 in the loading frame 42 enters the discharge cavity 415 of the discharge portion 414 through the through opening 45. At this time, the water-absorbing medium 43 slides downward along the inclined surface of the discharge cavity 415. At this time, the water-absorbing medium 43 gathers at the bottom of the discharge cavity 415. Then, the staff takes out the used water-absorbing medium 43 in the discharge cavity 415 through the opening at the bottom of the discharge cavity 415, and completes the emptying process of the water-absorbing medium 43 in the loading frame 42. Then, the electric control telescopic rod in the driving assembly 5 begins to shrink, and under the action of the connecting rod Under the action of the trigger wedge 6, the adjusting wedge 46 on the shielding plate 44 on the top surface of the loading frame 42 abuts against the trigger wedge 6. At this time, the traction spring connected to the shielding plate 44 is stretched, and the connecting opening 45 on the shielding plate 44 is aligned with the loading frame 42. The unused water-absorbing medium 43 in the loading portion 413 enters into the loading frame 42 through the connecting opening 45, completing the operation of the loading frame 42. The water-absorbing medium 43 is filled inside the loading frame 42. Finally, the electrically-controlled telescopic rod is extended, carrying the loading frame 42 away from the trigger wedge 6 at the feeding portion 413. The baffle 44 on the top surface of the loading frame 42 is closed. At this time, the unused water-absorbing medium 43 is filled inside the loading frame 42 and intercepted inside the smoke channel 41. When the smoke moves from the center to the edge in the outer tube body 4 (that is, the smoke moves from the smoke inlet 411 toward the smoke exhaust port 412), the smoke passes through the loading frame 42, and the water-absorbing medium 43 in the loading frame 42 absorbs the moisture in the smoke, thereby completing the smoke dehydration process.

[0043] Among them, in this embodiment, because the area where the accommodating cavity of the feeding part 413 is connected to the give way groove 416 thereon is located between the two trigger wedges 6 in the give way groove 416, the connected area cannot include the entire side of the loading frame 42. Therefore, when the water-absorbing medium 43 enters the interior of the loading frame 42 through the connected area, the water-absorbing medium 43 in the loading frame 42 is likely to form a shape that is high in the middle and low on both sides. Therefore, when entering the smoke channel 41, a vacant area of ​​the water-absorbing medium 43 is likely to appear on the loading frame 42, affecting the absorption effect of moisture in the smoke.

[0044] To solve this problem, in this embodiment, a leveling mechanism 7 is further installed on the loading frame 42. Based on the downward movement of the loading frame 42, the leveling mechanism 7 levels the arched water-absorbing medium 43 in the loading frame 42 to eliminate the vacant area that appears on the loading frame 42. Among them, the leveling mechanism 7 includes a driving rotating shaft 71. The driving rotating shaft 71 rotates on the loading frame 42. A driving gear 72 is fixedly installed at the center of the driving rotating shaft 71. A mating rack 73 meshing with the driving gear 72 is fixedly installed in the relief groove 416 on the feeding part 413. Two rectangular spiral grooves 74 are opened on the driving rotating shaft 71 from the center to both ends. The spiral directions of the two rectangular spiral grooves 74 are opposite. A horizontal guiding chute 47 (the guiding chute 47 is parallel to the driving rotating shaft 71) is opened on the loading frame 42. Two push plates 75 are sleeved on the driving rotating shaft 71. The two push plates 75 correspond to the two rectangular spiral grooves 74 one by one. The two push plates 75 are slidably installed in the guiding chute 47 with their ends. Sliders are arranged on the push plates 75. The sliders on the push plates 75 are inserted into the corresponding rectangular spiral grooves 74.

[0045] Specifically, in the initial state, the two push plates 75 are located at both ends of the driving rotating shaft 71. When the loading frame 42 moves upward for the filling process of the water-absorbing medium 43, as the loading frame 42 moves upward, the driving gear 72 on the loading frame 42 meshes with the mating rack 73 in the relief groove 416, and the driving gear 72 rotates. At this time, the push plates 75 located at both ends of the driving rotating shaft 71 move along the guiding chute 47 towards the center of the driving rotating shaft 71. When the loading frame 42 moves upward to the highest position, the two push plates 75 are located on both sides of the driving gear 72. After the filling process of the water-absorbing medium 43 is completed, as the loading frame 42 moves downward, the driving gear 72 on the loading frame 42 meshes with the mating rack 73 in the relief groove 416 again. The mating rack 73 drives the driving gear 72 to rotate in the reverse direction. At this time, the two push plates 75 located on both sides of the driving gear 72 move towards both ends of the driving rotating shaft 71 respectively. As the two push plates 75 move, the two push plates 75 push the arched water-absorbing medium 43 in the middle towards both ends, driving the water-absorbing medium 43 in the loading frame 42 to remain flat, avoiding the situation of the vacant area of the water-absorbing medium 43, thereby improving the absorption effect of the moisture in the flue gas and indirectly improving the quality of the produced hemihydrate gypsum.

[0046] Obviously, if the arch height of the water-absorbing medium 43 in the loading frame 42 is much greater than the height of the pushing plate 75, when the loading frame 42 moves downward, the driving gear 72 meshes with the mating rack 73, and the water-absorbing medium 43 in the loading frame 42 cannot be flattened by only one push of the pushing plate 75. Subsequently, the water-absorbing medium 43 in the loading frame 42 still maintains the arched state in the middle area, affecting the water absorption effect of the flue gas. Therefore, to ensure that the water-absorbing medium 43 inside the loading frame 42 can be flat, when filling the water-absorbing medium 43 into the loading frame 42, the driving assembly 5 can drive the loading frame 42 to perform multiple up-and-down reciprocating motions, so that the driving gear 72 on the loading frame 42 can repeatedly mesh with the mating rack 73. When the loading frame 42 moves upward, the loading frame 42 is filled with the water-absorbing medium 43. When the loading frame 42 moves downward, the pushing plate 75 flattens the water-absorbing medium 43 in the loading frame 42. The loading frame 42 repeats the above steps multiple times. By adding the water-absorbing medium 43 into the loading frame 42 in small amounts and multiple times, and cooperating with the multiple flattening processes of the pushing plate 75, it can ensure that the water-absorbing medium 43 in the loading frame 42 is in a flat state and avoid the occurrence of the situation of the vacant area of the water-absorbing medium 43 in the loading frame 42.

[0047] Only some exemplary embodiments of the present invention have been described in an illustrative manner above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A system for processing gypsum powder using desulfurized gypsum and thermal energy, which is used to connect the flue gas outlet (2) of a boiling furnace body (1) and a cyclone dust removal system (3), characterized in that: It comprises an outer tube body (4), a smoke channel (41) is formed inside the outer tube body (4), a plurality of loading frames (42) are arranged in sequence in the smoke channel (41) along the flow direction of the smoke, each loading frame (42) is loaded with a water absorbing medium (43) for the smoke to pass through, one end of the smoke channel (41) is connected to a smoke outlet (2), and the other end of the smoke channel (41) is connected to a cyclone dust removal system (3); A smoke inlet (411) is provided at the center of the bottom of the outer tube body (4), the smoke inlet (411) being connected to the smoke exhaust port (2); a plurality of smoke exhaust ports (412) are provided at the edge of the top of the outer tube body (4), the plurality of smoke exhaust ports (412) being arranged at intervals along the circumference of the outer tube body (4); smoke in the boiling furnace body (1) enters the smoke channel (41) through the smoke inlet (411), and the smoke passes through the loading frame (42) in the smoke channel (41) and enters the cyclone dust removal system (3) from the smoke exhaust port (412); The outer tube body (4) is divided into a loading portion (413) and a discharging portion (414) by a smoke passage (41); the loading portion (413) is hollow inside and filled with unused water absorbing medium (43); the discharging portion (414) is provided with a discharging cavity (415), and the discharging cavity (415) is used to store the used water absorbing medium (43) in the loading frame (42); A plurality of clearance grooves (416) are provided on the loading portion (413) and the discharging portion (414) of the smoke passage (41), the clearance grooves (416) on the loading portion (413) and the discharging portion (414) correspond one to one, two corresponding clearance grooves (416) on the loading portion (413) and the discharging portion (414) correspond to a loading frame (42), and two ends of the loading frame (42) are respectively inserted into the clearance grooves (416) on the loading portion (413) and the discharging portion (414); The upper and lower ends of the loading frame (42) are both provided with shielding plates (44), the shielding plates (44) being connected to the loading frame (42) via a traction spring, the shielding plates (44) being used to shield the upper and lower ends of the loading frame (42) to prevent the water-absorbing medium (43) from leaking from the loading frame (42), the shielding plates (44) being provided with a communication opening (45), and in an initial state, the communication opening (45) and the outer tube body (4) are arranged in a staggered manner; A driving assembly (5) is also provided in the outer tube body (4). The driving assembly (5) is connected to the plurality of loading frames (42). The driving assembly (5) is used to drive the plurality of loading frames (42) to perform up and down reciprocating motion in the discharge chamber (415). When the loading frames (42) perform up and down reciprocating motion, the water absorbing medium (43) inside is replaced.

2. A system for processing gypsum powder using desulfurized gypsum and thermal energy according to claim 1, characterized in that: The surface of the loading frame (42) is hollow.

3. A system for processing gypsum powder using desulfurized gypsum and thermal energy according to claim 1, characterized in that: The bottom surface of the discharge cavity (415) is inclined downward, and an opening is provided at the bottom end of the discharge cavity (415) and is in communication with the outside.

4. A system for processing gypsum powder using desulfurized gypsum and thermal energy according to claim 3, characterized in that: A trigger portion is provided in each of the clearance grooves (416) of the smoke passage (41). When the loading frame (42) moves up and down in the smoke passage (41), the shielding plate (44) on the loading frame (42) passes the trigger portion, and the shielding plate (44) slides in a direction away from the center of the outer tube body (4) under the action of the trigger portion.

5. A system for processing gypsum powder using desulfurized gypsum and thermal energy according to claim 4, characterized in that: The triggering part comprises a plurality of triggering wedges (6), two triggering wedges (6) are arranged in a clearance groove (416), the two triggering wedges (6) are arranged at two ends of the clearance groove (416), the two triggering wedges (6) correspond to a shielding plate (44), two adjusting wedges (46) are installed on a side of the shielding plate (44) away from the loading frame (42), and the two adjusting wedges (46) correspond one to one with the two triggering wedges (6) in the corresponding clearance groove (416).

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