Low-carbon waste heat steam tube nest desulfurized gypsum drying device

Abstract

The utility model discloses a low-carbon waste heat steam tube nest desulfurized gypsum drying device which comprises a drying cylinder. The spiral blade is arranged in the drying cylinder, a plurality of heat exchange pipes are fixedly connected to the middle of the spiral blade at equal intervals, and an air chamber is fixedly connected to one end of each heat exchange pipe and used for feeding steam into the heat exchange pipes. The spiral blades can enable materials to be more evenly distributed and move in the drying cylinder, it is guaranteed that the materials are subjected to even heat and air flow, and therefore the more even drying effect is achieved, the heat exchange pipes penetrate through the spiral blades and make closer contact with the materials, the heat transfer surface area is increased, and the heat transfer efficiency is improved. And the spiral blades not only push the materials to advance, but also can mix the materials, so that the materials are ensured to be more uniformly heated in the drying process, and local overheating or over-drying is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurized gypsum drying, in particular to a low-carbon waste heat steam tube desulfurized gypsum drying device. Background Art

[0002] Desulfurized gypsum, also known as flue gas desulfurization gypsum, sulfur gypsum or FGD gypsum, is an industrial by-product gypsum obtained by desulfurizing and purifying the flue gas produced by the combustion of sulfur-containing fuels (mainly coal). Desulfurized gypsum is different from natural gypsum. Natural gypsum is bonded together in its original state; desulfurized gypsum exists as separate crystalline particles. The main mineral phase of desulfurized gypsum is calcium sulfate dihydrate, and the main impurities are other related minerals associated with limestone (such as calcium carbonate, aluminum oxide and silicon oxide, iron oxide, calcite, feldspar, quartz, etc.), which have little effect on the construction performance of gypsum. The particle size of flue gas desulfurized gypsum is relatively uniform, and its distribution band is very narrow. The particles are mainly concentrated between (30 and 60) μm, and the gradation is far worse than the gypsum powder after natural gypsum is ground.

[0003] Due to its high water content, desulfurized gypsum needs to be dried to meet the requirements of transportation and utilization. The drying of desulfurized gypsum is usually carried out by hot air circulation drying to related equipment. It heats the air and passes it through the gypsum bed to evaporate the water, but the existing equipment cannot achieve continuous processing, and the materials cannot be mixed and stirred during drying, and a more uniform drying effect cannot be achieved. Utility Model Content

[0004] The purpose of the utility model is to provide a low-carbon waste heat steam tube desulfurization gypsum drying device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-carbon waste heat steam tube desulfurization gypsum drying device, comprising:

[0006] Drying cylinder;

[0007] A spiral blade is placed inside the drying cylinder, a plurality of heat exchange tubes are fixedly connected at equal intervals in the middle of the spiral blade, and one end of the heat exchange tube is fixedly connected to an air chamber for delivering steam into the heat exchange tube;

[0008] A support assembly is placed at the bottom of the drying cylinder, the support assembly comprises a support roller fixedly connected to the outside of the drying cylinder, and a support platform No. 1 for supporting the supporting roller is provided below the support roller;

[0009] The driving part is arranged at the bottom of the drying cylinder and is used for driving the drying cylinder to rotate.

[0010] Preferably, a feed port is provided at one end of the drying cylinder.

[0011] Preferably, a rotary joint is installed on one side of the air chamber.

[0012] Preferably, one end of the drying cylinder is rotatably connected to a dust cover, and the dust cover is fixedly connected to the first support platform.

[0013] Preferably, a discharge port is provided at the bottom of the dust cover.

[0014] Preferably, the top of the No. 1 support platform is rotatably connected to two support rollers, and the support rollers are rollingly connected to the support rollers.

[0015] Preferably, the driving unit comprises a second support platform installed below the drying cylinder, the top of the second support platform is fixedly connected to a support base, and the interior of the support base is rotatably connected to a driving gear.

[0016] Preferably, a driving motor and a reducer are fixedly connected to the top of the second support platform, the output end of the driving motor is fixedly connected to the input end of the reducer, the output end of the reducer is fixedly connected to the driving gear, the outer side of the driving gear is meshingly connected with a driven gear, and the driven gear is fixedly sleeved on the outer side of the drying cylinder.

[0017] Compared with the prior art, the beneficial effect of the utility model is as follows: by arranging spiral blades in cooperation with heat exchange tubes, the spiral blades can make the material more evenly distributed and moved inside the drying cylinder, helping to ensure that the material is subjected to uniform heat and air flow, thereby achieving a more uniform drying effect; the heat exchange tubes pass through the spiral blades and are in closer contact with the material, increasing the surface area for heat transfer and improving the heat transfer efficiency; the spiral blades not only push the material forward, but also mix the material, thereby ensuring that the material is more evenly heated during the drying process and preventing local overheating or overdrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the position structure of the feed port of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the spiral blade of the utility model;

[0021] Figure 4 This is a schematic diagram of the air chamber structure of the utility model.

[0022] In the figure: 1. Drying cylinder; 2. Support roller; 3. Support platform No. 1; 4. Support roller; 5. Support platform No. 2; 6. Driving motor; 7. Reducer; 8. Support seat; 9. Driving gear; 10. Driven gear; 11. Heat exchange tube; 12. Spiral blade; 13. Dust cover; 14. Air chamber; 15. Rotary joint; 16. Discharge port; 17. Feed port. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 , 2 As shown in , 3 and 4, the utility model provides a technical solution: a low-carbon waste heat steam tube desulfurization gypsum drying device, comprising: a drying cylinder 1; a spiral blade 12 is welded to the inside of the drying cylinder 1, and a plurality of heat exchange tubes 11 are fixedly connected at equal intervals in the middle of the spiral blade 12, and an air chamber 14 is fixedly connected to one end of the heat exchange tube 11 for delivering steam into the heat exchange tube 11; a support assembly is placed at the bottom of the drying cylinder 1, and the support assembly includes a support roller 2 fixedly connected to the outside of the drying cylinder 1, and a support platform 3 for supporting the supporting roller 2 is provided below the support roller 2; a driving unit is placed at the bottom of the drying cylinder 1 for driving the drying cylinder 1 to rotate.

[0025] It should be noted that the utility model tilts the drying cylinder 1 so that the feed port 17 is located at a high position and the discharge port 16 is located at a low position. The material to be dried is added into the drying cylinder 1 from the feed port 17, and the steam is injected into the air chamber 14 through the steam rotary joint 15. The air chamber 14 sends the steam into the heat exchange tube 11, and the drying cylinder 1 is driven to rotate by the driving part. The lower end of the material moves under the action of gravity and the spiral blades 12. During this period, the heat exchange tube 11 dries the material, and the spiral blades will push the material forward and contact with the part through which the heat exchange tube passes. In this way, when heat is transferred to the material through the heat exchange tube, the spiral blades will bring the material into closer contact with the surface of the heat exchange tube, thereby promoting heat transfer and drying of the material, increasing the mixing degree of the material in the drying cylinder, and pushing the material forward, making the drying process more uniform and efficient, wherein water vapor is discharged through the feed port 17 and cooling water enters the air chamber 14 and is discharged by the drain pipe of the steam rotary joint 15. After drying, the material enters the drying cylinder 1 at one end of the dust cover 13, and is discharged from the discharge port 16 under the action of gravity.

[0026] See also Figure 1 , 2 As shown in Fig. 4, a feed port 17 is provided at one end of the drying cylinder 1, a steam rotary joint 15 is installed at one side of the air chamber 14, a dust cover 13 is rotatably connected to one end of the drying cylinder 1, the dust cover 13 is fixedly connected to the No. 1 support platform 3, and a discharge port 16 is provided at the bottom of the dust cover 13.

[0027] It should be noted that a siphon tube used in conjunction with a steam rotary joint 15 is installed inside the air chamber 14 of the utility model. The cooperation between the steam rotary joint and the siphon tube ensures the smooth transfer and recovery of steam. The steam rotary joint transfers steam to the steam tube array inside the dryer through a pipeline to provide heat energy for drying the material. The siphon tube is responsible for recovering the moisture in the steam, and is usually connected to a drainage system to guide the moisture to a recovery or treatment device. The dust cover 13 is located between the drying cylinder 1 and the air chamber 14, and the drying cylinder 1 is located on one side of the air chamber 14.

[0028] See also Figure 1 , 2 As shown in FIG. 4 , the top of the No. 1 support platform 3 is rotatably connected to two support rollers 4 , and the support rollers 4 are rollingly connected to the support rollers 2 .

[0029] It should be noted that the two symmetrically rolling support rollers 4 at the bottom of the support roller 2 of the utility model can help disperse and balance the load on the device. By using two support rollers 4, the load can be evenly distributed, the wear and friction of the rollers can be reduced, and the stability and durability of the system can be improved. The two support rollers 4 increase the contact area with the ground, thereby increasing friction and stability. By using two support rollers 4, the device may have higher flexibility and adaptability, and can more easily adapt to different ground or working conditions.

[0030] See also Figure 1 , 2 As shown in Figures 4, the driving part includes a No. 2 support platform 5 installed below the drying cylinder 1, the top of the No. 2 support platform 5 is fixedly connected with a support base 8, the inside of the support base 8 is rotatably connected with a driving gear 9, the top of the No. 2 support platform 5 is fixedly connected with a driving motor 6 and a reducer 7, the output end of the driving motor 6 is fixedly connected with the input end of the reducer 7, the output end of the reducer 7 is fixedly connected with the driving gear 9, the outer side of the driving gear 9 is meshed with a driven gear 10, and the driven gear 10 is fixedly sleeved on the outer side of the drying cylinder 1.

[0031] It should be noted that the drive motor 6 of the utility model is started by electricity, and the drive reducer 7 starts to operate. The function of the reducer 7 is to slow down the output speed of the motor and increase the output torque, so as to meet the low-speed and high-torque operation requirements of the drying cylinder 1. The output end of the reducer 7 is fixedly connected to the driving gear 9, and the outer side of the driving gear 9 is meshingly connected with the driven gear 10. The driven gear 10 is fixedly sleeved on the outer side of the drying cylinder 1 through a meshing connection. As the driving gear rotates, the driven gear starts to rotate, and the rotation of the driven gear 10 is transmitted to the drying cylinder 1, causing the drying cylinder to start rotating. The rotation of the drying cylinder is to allow the material to be evenly heated during the drying process. Once the drive system is started and operates normally, the drive motor 6 and the reducer 7 will continue to provide power to keep the drying cylinder 1 in a rotating state until the drying process is completed.

[0032] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0034] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical 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. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-carbon waste heat steam tube desulfurization gypsum drying device, Features: include: Drying cylinder (1); A spiral blade (12), the spiral blade (12) is placed inside the drying cylinder (1) and is used to push and mix the materials. A plurality of heat exchange tubes (11) are fixedly connected at equal intervals to the middle of the spiral blade (12). One end of the heat exchange tube (11) is fixedly connected to an air chamber (14) for sending steam into the heat exchange tube (11); A support assembly, the support assembly being placed at the bottom of the drying cylinder (1), the support assembly comprising a support roller (2) fixedly connected to the outside of the drying cylinder (1), and a support platform (3) for supporting and cooperating with the support roller (2) being provided below the support roller (2); A driving unit is disposed at the bottom of the drying cylinder (1) and is used to drive the drying cylinder (1) to rotate.

2. A low-carbon waste heat steam tube desulfurization gypsum drying device according to claim 1, Features: A feed inlet (17) is provided at one end of the drying cylinder (1).

3. A low-carbon waste heat steam tube desulfurization gypsum drying device according to claim 1, Features: A rotary joint (15) is installed on one side of the air chamber (14).

4. A low-carbon waste heat steam tube desulfurization gypsum drying device according to claim 1, Features: One end of the drying cylinder (1) is rotatably connected to a dust cover (13), and the dust cover (13) is fixedly connected to the first support platform (3).

5. A low-carbon waste heat steam tube desulfurization gypsum drying device according to claim 4, Features: A discharge port (16) is provided at the bottom of the dust cover (13).

6. A low-carbon waste heat steam tube desulfurization gypsum drying device according to claim 1, Features: The top of the No. 1 support platform (3) is rotatably connected to two support rollers (4), and the support rollers (4) are rollingly connected to the support rollers (2).

7. A low-carbon waste heat steam tube desulfurization gypsum drying device according to claim 1, Features: The driving unit comprises a second support platform (5) installed below the drying cylinder (1); the top of the second support platform (5) is fixedly connected to a support seat (8); and the interior of the support seat (8) is rotatably connected to a driving gear (9).

8. A low-carbon waste heat steam tube desulfurization gypsum drying device according to claim 7, Features: A driving motor (6) and a reducer (7) are fixedly connected to the top of the second support platform (5); the output end of the driving motor (6) is fixedly connected to the input end of the reducer (7); the output end of the reducer (7) is fixedly connected to a driving gear (9); the outer side of the driving gear (9) is meshingly connected to a driven gear (10); and the driven gear (10) is fixedly sleeved on the outer side of the drying cylinder (1).

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