Utilization device based on gypsum powder production waste heat

Abstract

The utility model relates to the technical field of gypsum powder production, and discloses a gypsum powder production waste heat utilization device which comprises a sunshine shed. The sunlight shed is sequentially connected with a hammer dryer, a screening machine, a first elevator, a first intermediate bin, a fluidized bed furnace, a second elevator, a second intermediate bin, a cooling system, a mill system, a third elevator and an old product bin system and further comprises a natural gas hot blast stove, a first waste heat centrifugal fan and a second waste heat centrifugal fan. The input end of the second waste heat centrifugal fan is communicated with a first waste heat air suction main pipe, the first waste heat air suction main pipe is communicated with the cooling system, and the output end of the second waste heat centrifugal fan is communicated with a first waste heat air outlet main pipe. Secondary pollution is avoided, healthy and rapid development of the environment-friendly industry can be promoted, resources can be saved, and worries of enterprises can be relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gypsum powder production, in particular to a device for utilizing waste heat from gypsum powder production. Background Art

[0002] The primary technical approach for utilizing industrial by-product gypsum remains the production of β-hemihydrate gypsum powder, with the application of α-high-strength gypsum and Type II anhydrous gypsum expanding year by year. Common heat sources include coal, gas, steam, and biomass. Regardless of the heat source, if waste heat is not utilized, significant waste will result. Furthermore, unused heat will be released into the air, polluting the environment.

[0003] like Figure 1 As shown, the existing gypsum powder production line equipment includes a sun shed 1, which is sequentially connected to a hammer dryer 2, a screening machine 22, a No. 1 elevator 3, a No. 1 intermediate bin 4, a boiling furnace 5, a No. 2 elevator 6, a No. 2 intermediate bin 7, a cooling system 8, a grinding system 9, a No. 3 elevator 10 and a aging bin system 11. This process requires a large amount of heat absorption. Due to factors such as thermal efficiency, a lot of waste heat is generated and cannot be utilized. For this reason, we propose a device for utilizing waste heat based on gypsum powder production. Utility Model Content

[0004] The purpose of the utility model is to provide a device for utilizing waste heat from gypsum powder production, thereby solving the problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for utilizing waste heat from gypsum powder production, comprising a sun shed, which is sequentially connected to a hammer dryer, a screening machine, a No. 1 elevator, a No. 1 intermediate bin, a boiling furnace, a No. 2 elevator, a No. 2 intermediate bin, a cooling system, a grinding system, a No. 3 elevator and a aging bin system, and also comprises a natural gas hot air furnace, a waste heat centrifugal fan 1 and a waste heat centrifugal fan 2, the input end of the waste heat centrifugal fan 2 is connected to a waste heat suction pipe 1, the waste heat suction pipe 1 is connected to the cooling system, the output end of the waste heat centrifugal fan 2 is connected to a waste heat outlet pipe 1, the waste heat outlet The main pipe 1 is connected with the screening machine, the input end of the natural gas hot blast furnace is connected with a branch pipe 1, the branch pipe 1 is connected with the waste heat air outlet main pipe 1, the output end of the natural gas hot blast furnace is connected with a waste heat air outlet main pipe 2, the waste heat air outlet main pipe 2 is connected with the boiling furnace, the waste heat air outlet main pipe 2 is connected with a branch pipe 2, the branch pipe 2 is connected with the hammer dryer, the output end of the waste heat centrifugal fan 1 is connected with a waste heat air outlet main pipe 3, the waste heat air outlet main pipe 3 is connected with the input end of the natural gas hot blast furnace, the input end of the waste heat centrifugal fan 1 is connected with a waste heat suction main pipe 2, and the waste heat suction main pipe 2 is connected with the boiling furnace.

[0006] Preferably, a belt conveyor is used for transportation between the sun shed and the hammer dryer, and the high-temperature steam hot air and calcination waste heat supply temperature used by the hammer dryer and the belt conveyor are both less than 650°C.

[0007] Preferably, there are two No. 1 elevators, and the other No. 1 elevator is used between the No. 1 intermediate bin and the boiling furnace. By setting up the elevator, the gypsum powder can be lifted and transported during the production process.

[0008] The utility model provides a device for utilizing waste heat from gypsum powder production. The device for utilizing waste heat from gypsum powder production has the following beneficial effects:

[0009] (1) The device for utilizing waste heat from gypsum powder production can properly treat gypsum, avoid secondary pollution, promote the healthy and rapid development of the environmental protection industry, save resources, and relieve enterprises of their worries;

[0010] (2) The device for utilizing waste heat from gypsum powder production realizes the utilization of waste heat from the production line and avoids external discharge, which saves energy and controls the external discharge of heat sources, thus achieving comprehensive utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of a gypsum powder production line in the prior art;

[0012] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the waste heat utilization structure of the utility model.

[0014] In the figure: 1. Sun shed; 2. Hammer dryer; 3. Elevator No. 1; 4. Intermediate bin No. 1; 5. Boiling furnace; 6. Elevator No. 2; 7. Intermediate bin No. 2; 8. Cooling system; 9. Grinding system; 10. Elevator No. 3; 11. Product storage bin system; 12. Natural gas hot air furnace; 13. Waste heat centrifugal fan 1; 14. Waste heat air outlet main pipe 1; 15. Waste heat centrifugal fan 2; 16. Branch pipe 1; 17. Waste heat air outlet main pipe 2; 18. Branch pipe 2; 19. Waste heat air outlet main pipe 3; 20. Waste heat air suction main pipe 1; 21. Waste heat air suction main pipe 2; 22. Screening machine. DETAILED DESCRIPTION

[0015] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0016] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1-3 As shown, the utility model provides a technical solution: a device for utilizing waste heat from gypsum powder production, comprising a sun shed 1, which is sequentially connected to a hammer dryer 2, a screening machine 22, a No. 1 elevator 3, a No. 1 intermediate bin 4, a boiling furnace 5, a No. 2 elevator 6, a No. 2 intermediate bin 7, a cooling system 8, a grinding system 9, a No. 3 elevator 10 and a aging bin system 11, and further comprising a natural gas hot air furnace 12, a waste heat centrifugal fan 13 and a waste heat centrifugal fan 2 15, the input end of the waste heat centrifugal fan 2 15 being connected to a waste heat suction pipe 1 20, the waste heat suction pipe 1 20 being connected to the cooling system 8, the output end of the waste heat centrifugal fan 2 15 being connected to a waste heat outlet pipe 14, the waste heat outlet pipe A branch pipe 14 is connected to the screening machine 22, the input end of the natural gas hot blast furnace 12 is connected to a branch pipe 16, the branch pipe 16 is connected to the waste heat air outlet pipe 14, the output end of the natural gas hot blast furnace 12 is connected to a waste heat air outlet pipe 2 17, the waste heat air outlet pipe 2 17 is connected to the boiling furnace 5, the waste heat air outlet pipe 2 17 is connected to a branch pipe 2 18, the branch pipe 2 18 is connected to the hammer dryer 2, the output end of the waste heat centrifugal fan 13 is connected to the waste heat air outlet pipe 3 19, the waste heat air outlet pipe 3 19 is connected to the input end of the natural gas hot blast furnace 12, the input end of the waste heat centrifugal fan 13 is connected to the waste heat suction pipe 2 21, and the waste heat suction pipe 2 21 is connected to the boiling furnace 5.

[0019] Specifically, the above technical solution is that the gypsum raw materials are transported by forklifts, and then broken up, metered, and iron-removed and transported to the hammer dryer 2 for drying. The heat source of the belt conveyor and the dryer is supplied by high-temperature steam hot air less than 650°C + calcination waste heat. The qualified semi-finished products are transported and screened by the screening machine 22, and then moved to the No. 1 intermediate warehouse 4 by the No. 1 elevator 3. The screening is mainly to screen out impurities that do not meet the calcination requirements and large-particle impurities. After the raw materials are metered, they are transported to the boiling furnace 5 by another No. 1 elevator 3. The unqualified products are sent to the bypass return material quality control system. The qualified products are calcined at high temperature in the rotary kiln, aged, cooled, homogenized, and modified, and then sent to the eight aged finished product warehouses by the No. 3 elevator 10 for 120 hours of further aging treatment. The aged finished product warehouses are equipped with dust removal, material level, and homogenization systems. The waste heat is utilized through two special The centrifugal fan transports the waste heat through the pipeline to the drying, dust removal and reheating equipment. The waste heat generated by the cooling system 8 will be sucked into the waste heat suction pipe 20 through the waste heat centrifugal fan 2 15, and then through the waste heat outlet pipe 14. Part of the waste heat will be transported to the natural gas hot air furnace 12 through the branch pipe 16, and the other part of the waste heat will be directly transported to the screening machine 22 for utilization through the waste heat outlet pipe 1. The waste heat generated by the boiling furnace 5 will be sucked into the waste heat suction pipe 21 through the waste heat centrifugal fan 13, and then transported to the natural hot air furnace through the waste heat outlet pipe 3 19 for heating. After heating, part of it will be directly transported to the boiling furnace 5 for utilization through the waste heat outlet pipe 2 17, and the other part will be transported to the hammer dryer 2 for utilization through the branch pipe 2 18. The rest of the production line exhaust gas is discharged to the outside through the chimney.

[0020] Furthermore, a belt conveyor is used for transportation between the sun shed 1 and the hammer dryer 2, and the high-temperature steam hot air and calcination waste heat supply temperature used by the hammer dryer 2 and the belt conveyor are both less than 650°C.

[0021] Furthermore, there are two No. 1 elevators 3, and another No. 1 elevator 3 is used between the No. 1 intermediate bin 4 and the boiling furnace 5;

[0022] Among them, by setting up an elevator, the gypsum powder can be lifted and transported during the production process.

[0023] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A device for utilizing waste heat from gypsum powder production, comprising a sun shed (1), wherein the sun shed (1) is sequentially connected to a hammer dryer (2), a screening machine (22), a No. 1 elevator (3), a No. 1 intermediate bin (4), a boiling furnace (5), a No. 2 elevator (6), a No. 2 intermediate bin (7), a cooling system (8), a grinding system (9), a No. 3 elevator (10) and a product storage bin system (11), characterized in that: It also includes a natural gas hot air furnace (12), a waste heat centrifugal fan 1 (13) and a waste heat centrifugal fan 2 (15), wherein the input end of the waste heat centrifugal fan 2 (15) is connected to a waste heat air suction pipe 1 (20), and the waste heat air suction pipe 1 (20) is connected to the cooling system (8), and the output end of the waste heat centrifugal fan 2 (15) is connected to a waste heat air outlet pipe 1 (14), and the waste heat air outlet pipe 1 (14) is connected to the screening machine (22), and the input end of the natural gas hot air furnace (12) is connected to a branch pipe 1 (16), and the branch pipe 1 (16) is connected to the waste heat air outlet pipe 1 (14), and the natural gas hot air furnace ( 12) The output end is connected with a waste heat air outlet pipe 2 (17), the waste heat air outlet pipe 2 (17) is connected with the boiling furnace (5), the waste heat air outlet pipe 2 (17) is connected with a branch pipe 2 (18), the branch pipe 2 (18) is connected with the hammer dryer (2), the output end of the waste heat centrifugal fan 1 (13) is connected with a waste heat air outlet pipe 3 (19), the waste heat air outlet pipe 3 (19) is connected with the input end of the natural gas hot air furnace (12), the input end of the waste heat centrifugal fan 1 (13) is connected with a waste heat air suction pipe 2 (21), the waste heat air suction pipe 2 (21) is connected with the boiling furnace (5).

2. The device for utilizing waste heat from gypsum powder production according to claim 1, characterized in that: A belt conveyor is used for transport between the sun shed (1) and the hammer dryer (2), and the high-temperature steam hot air and calcination waste heat supply temperature used by the hammer dryer (2) and the belt conveyor are both less than 650°C.

3. The device for utilizing waste heat from gypsum powder production according to claim 1, characterized in that: There are two No. 1 elevators (3), and another No. 1 elevator (3) is used between the No. 1 intermediate bin (4) and the boiling furnace (5).

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