CN210163348U - Gypsum flue gas calcining equipment - Google Patents
Gypsum flue gas calcining equipment Download PDFInfo
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- CN210163348U CN210163348U CN201921111274.2U CN201921111274U CN210163348U CN 210163348 U CN210163348 U CN 210163348U CN 201921111274 U CN201921111274 U CN 201921111274U CN 210163348 U CN210163348 U CN 210163348U
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Abstract
The application discloses gypsum flue gas calcination equipment, including the kiln body and flue gas chamber, the one end of the kiln body runs through flue gas chamber one end extends to flue gas chamber's the other end, the kiln body is connected through second sealing device in the flue gas chamber, be fixed with the flue gas circulation room on the internal one end lateral wall of kiln, one side equidistant of flue gas circulation room is fixed with a plurality of flue gas circulation pipes, and a plurality of flue gas circulation pipe's one end is fixed with central flue gas pipe jointly, the one end of central flue gas pipe is connected with the tail gas discharge pipe through first sealing device. The utility model provides high heat exchange efficiency realizes the scale and uses, is favorable to controlling the quality of product, simple structure, unique, reduced manufacturing cost, improve equipment adaptability, and can adapt to more gypsum raw materials, produce the gypsum calcining equipment that accords with industry standard and adapt to user demand high performance product.
Description
Technical Field
The utility model relates to a gypsum production technical field especially relates to a gypsum flue gas calcining equipment.
Background
With the rapid development of gypsum industry in China in recent years, gypsum production raw materials are gradually developed into a raw material mode with coexistence of byproduct gypsum and natural gypsum from single natural gypsum raw materials. The demand for gypsum calcination equipment has also shifted from small scale equipment to low energy, large scale, high performance equipment. Due to the control on energy consumption requirements, the influence on environmental requirements, the increase of the proportion of energy consumption cost to production cost and the like, the research and development of low-energy-consumption large-scale calcining equipment with high-efficiency heat exchange and calcining equipment capable of adapting to various byproduct gypsum raw materials become the development direction of gypsum calcining equipment.
The existing flue gas heat medium gypsum calcining equipment mainly comprises two types, namely flue gas calcining equipment with direct heat exchange and flue gas calcining equipment with indirect heat exchange, wherein the calcining equipment with direct heat exchange is gradually eliminated by the industry due to poor product quality stability, the calcining equipment with indirect heat exchange mainly comprises three types, namely a fluidized calcining machine, an external-burning rotary kiln and a tubular rotary kiln, and the fluidized calcining machine cannot directly adapt to materials with higher water content and materials with larger particles due to the requirement on feeding raw materials (the fineness reaches more than 80 meshes and the water content is lower than 2 percent), and only can adopt the production process of firstly grinding and then burning and adopting a two-step method; the external burning rotary kiln generally adopts one-way heat exchange, so that the heat exchange efficiency is low, the single machine scale is small, and large-scale production lines in the industry are generally rarely adopted; the tubular calcining kiln depends on a heat exchange pipeline with a large heat exchange area, so that large-scale production and production of high-performance products can be realized, but the currently generally adopted tubular calcining kiln adopts single-return-stroke or two-return-stroke heat exchange; along with the rising of fuel price and the forbidding of fire coal in partial areas, fuel gas gradually becomes the main mode of flue gas heat exchange equipment, the heat exchange efficiency of the equipment is improved to the greatest extent at present, the energy consumption and the fuel cost are reduced, and the flue gas heat exchange equipment becomes the main parameter for optimizing the performance of calcining equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of existing equipment, provide a structure more be favorable to improving heat transfer production efficiency, realize the scale, be favorable to controlling product quality's simple structure, unique, reduced manufacturing cost, the wide gypsum calcining equipment of improve equipment adaptability, and can adapt to more gypsum raw materials, produce the gypsum calcining equipment that accords with the high performance product of industry standard and adaptation user demand.
The application provides a gypsum flue gas calcining equipment, including the kiln body and flue gas chamber, the one end of the kiln body runs through flue gas chamber one end extends to flue gas chamber's the other end, the kiln body is connected through second sealing device in the flue gas chamber, be fixed with the flue gas circulation room on the internal one end lateral wall of kiln, one side equidistant of flue gas circulation room is fixed with a plurality of flue gas circulating pipes, and is a plurality of flue gas circulating pipe's one end is fixed with central flue gas pipe jointly, the one end of central flue gas pipe is connected with the tail gas discharge pipe through first sealing device, the one end of tail gas discharge pipe runs through the kiln body and extends to the one end of the kiln body, one side of tail gas discharge pipe is equipped with the feed pipe, the one end of feed pipe runs through one side of tail gas discharge pipe and extends to the opposite side of tail gas discharge pipe, the one end of feed pipe is located the one end of, the other end of the feeding pipe is located in the kiln body, the other end of the kiln body is provided with an opening, the other end of the kiln body is connected with a discharge box through a third sealing device, a plurality of flue gas heat exchange pipes are fixed on one side of the flue gas circulation chamber at equal intervals, one end of each flue gas heat exchange pipe penetrates through one side wall in the kiln body and extends into the flue gas chamber, and two wheel belts are fixed on the kiln body.
Preferably, a pipeline supporting frame is fixed on one side in the kiln body, and the flue gas heat exchange pipe is fixed on one side of the pipeline supporting frame.
Preferably, the flue gas heat exchange tube is a circular tube or a special-shaped tube.
Preferably, a gear ring is further fixed on the kiln body.
According to the technical scheme, raw materials are fed into a calcining kiln body through a feeding pipe, the raw materials move towards a discharging box through the rotation of the calcining kiln body, high-temperature flue gas is generated by combustion of fuel coal, natural gas, oil and the like in a flue gas chamber and flows towards a flue gas heat exchange pipe, the flue gas enters a flue gas heat exchange pipeline arranged in the kiln body from an inlet of the flue gas heat exchange pipe and flows towards a flue gas circulating chamber, the flue gas enters a flue gas circulating pipe through the flue gas circulating chamber and enters a central flue gas pipe, the flue gas enters a tail gas discharge pipe from the central flue gas pipe and then is discharged into dust collection equipment, a flue gas flowing negative pressure is provided by a draught fan matched with a dust collector, the materials contact with the kiln body and the flue gas heat exchange pipe to exchange heat in the process of moving in the kiln body, the calcining of dihydrate gypsum into the hemihydrate gypsum is ensured when the gypsum moves to the discharging box, the, the calcined gypsum clinker is discharged to subsequent conveying equipment by the discharging box, the operation of the calcining kiln is realized by components such as a belt wheel, a gear ring and the like on a kiln body and an attached motor reducer and the like, a central flue gas pipe rotates along with the kiln body, the central flue gas pipe is connected with a tail gas discharge pipe by adopting a first sealing device, a flue gas chamber is sealed with the kiln body by adopting a second sealing device, the discharging box is sealed with the kiln body by adopting a third sealing device, and a flue gas heat exchange pipe is fixed on the side wall in the kiln body by adopting a pipeline supporting frame.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses further optimize equipment structure, improve the effective heat transfer area in the equipment unit volume to improve equipment heat exchange efficiency reduces equipment operation heat consumption, increases the controllability of equipment to product quality and calcination parameter.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a schematic view of the internal structure of a gypsum flue gas calcining apparatus provided by the present invention;
FIG. 2 is a schematic view of a feeding pipe structure of a gypsum flue gas calcining apparatus according to the present invention;
FIG. 3 is a schematic view of a flue gas heat exchange tube of a gypsum flue gas calcining apparatus according to the present invention;
fig. 4 is a schematic structural view of a flue gas circulation pipe of a gypsum flue gas calcining device provided by the utility model.
In the figure: the device comprises a feeding pipe 1, a tail gas discharging pipe 2, a first sealing device 3, a central flue gas pipe 4, a kiln body 5, a flue gas heat exchange pipe 6, a wheel belt 7, a second sealing device 8, a gear ring 9, a third sealing device 10, a discharging box 11, a pipeline supporting frame 12, a flue gas circulating chamber 13, a flue gas circulating pipe 14 and a flue gas chamber 15.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1-4, a gypsum flue gas calcining device comprises a kiln body 5 and a flue gas chamber 15, wherein high-temperature flue gas is used as a heat exchange medium, the kiln body 5, a flue gas heat exchange tube 6 and a central flue gas tube 4 are combined to perform heat exchange, one end of the kiln body 5 penetrates through one end of the flue gas chamber 15 and extends to the other end of the flue gas chamber 15, the kiln body 5 is rotatably connected in the flue gas chamber 15 through a second sealing device 8, most of the calcining kiln body 5 is used as a heat exchange surface to be wrapped in a hearth or the flue gas chamber 15, a flue gas circulating chamber 13 is fixed on the side wall of one end in the kiln body 5, high-temperature flue gas with the temperature of 300 plus of 1000 ℃ generated by coal, oil, gas and the like is used as the heat exchange medium, a plurality of flue gas circulating tubes 14 are fixed at equal intervals on one side of the flue gas circulating chamber 13, one end of the plurality of flue gas circulating tubes 14 is jointly fixed with the, one end of a central flue gas pipe 4 is rotatably connected with a tail gas discharge pipe 2 through a first sealing device 3, high-temperature flue gas forms a multi-return heat exchange path after circulating in a flue gas chamber 15, a flue gas heat exchange pipe 6 and the central flue gas pipe 4 and then is discharged and enters a dust collector for treatment, one end of the tail gas discharge pipe 2 penetrates through a kiln body 5 and extends to one end of the kiln body 5, the tail gas discharge pipe 2 does not rotate along with the kiln body 5, one side of the tail gas discharge pipe 2 is provided with a feed pipe 1, raw materials are fed into the calcining kiln body 5 through the feed pipe 1, one end of the feed pipe 1 penetrates through one side of the tail gas discharge pipe 2 and extends to the other side of the tail gas discharge pipe 2, one end of the feed pipe 1 is positioned at one end of the kiln body 5, the other end of the feed pipe 1 is positioned in the kiln body 5, the raw materials are preheated in advance in the feed pipe 1 by utilizing waste heat, the other end, the calcined gypsum clinker is discharged to subsequent conveying equipment from a discharging box 11, a plurality of flue gas heat exchange tubes 6 are fixed on one side of a flue gas circulation chamber 13 at equal intervals, one or more layers of flue gas heat exchange tubes 6 are adopted in the calcining kiln, the flue gas heat exchange tubes 6 are round tubes or special tubes, a flue gas inlet is formed in one side of a kiln body 5 and is connected with a flue gas chamber 15, one end of each flue gas heat exchange tube 6 penetrates through the side wall of one end in the kiln body 5 and extends into the flue gas chamber 15, the flue gas heat exchange tubes 6 are connected with the flue gas chamber 15 through the flue gas inlets, high-temperature flue gas is generated by burning of fuel coal, natural gas and oil in the flue gas chamber 15 and flows to the flue gas heat exchange tubes 6, enters the flue gas heat exchange tubes 6 arranged in the kiln body 5 from the inlets of the flue gas heat exchange tubes 6 and flows to the flue gas circulation chamber 13, two wheel belts 7 are fixed on the kiln body 5, a gear ring 9, The parts such as the gear ring 9 and the like and the attached motor reducer and the like can be realized, the one-step calcination method can adapt to various gypsum raw materials with the water content of 0-20 percent and the feeding particle size of less than 20mm, the AIII phase of the calcined product can be controlled to be less than 5 percent, the dihydrate gypsum is controlled to be less than 4 percent, the effective heat exchange area in the unit volume of the equipment is increased, the heat exchange efficiency of the equipment is increased, the heat consumption of the equipment in operation is reduced, and the controllability of the equipment on the product quality and the calcination parameters.
The utility model discloses in, one side in the kiln body 5 is fixed with pipeline support frame 12, and flue gas heat exchange tube 6 is fixed in one side of pipeline support frame 12, improves flue gas heat exchange tube 6's stability to improve flue gas heat exchange tube 6's life.
According to the technical scheme, when the device is used, raw materials are fed into a calcining kiln body 5 through a feeding pipe 1, the raw materials move towards a discharging box 11 through the rotation of the calcining kiln body 5, high-temperature flue gas is generated by burning fuel coal, natural gas, oil and the like in a flue gas chamber 15 and flows towards a flue gas heat exchange pipe 6, the flue gas enters a flue gas heat exchange pipeline 6 arranged in the kiln body 5 from an inlet of the flue gas heat exchange pipe 6 and flows towards a flue gas circulation chamber 13, the flue gas enters a flue gas circulation pipe 14 through the flue gas circulation chamber 13 and enters a central flue gas pipe 4, the flue gas enters a tail gas discharge pipe 2 from the central flue gas pipe 4 and then is discharged into dust collection equipment, the flow negative pressure of the flue gas is provided by a draught fan matched with a dust collector, the materials contact with the kiln body 5 and the flue gas heat exchange pipe 6 to exchange heat in the process of moving in the kiln body 5, and the gypsum, and ensure that A III phase in clinker is less than 5%, dihydrate gypsum is less than 4%, the calcined gypsum clinker is discharged to subsequent conveying equipment from a discharge box 11, the operation of the calcining kiln is realized by components such as a belt 7, a gear ring 9 and the like on a kiln body 5 and an attached motor reducer and the like, a central flue gas pipe 4 rotates along with the kiln body 5, the central flue gas pipe 4 is connected with a tail gas discharge pipe 2 by adopting a first sealing device 3, a flue gas chamber 15 is sealed with the kiln body 5 by adopting a second sealing device 8, the discharge box 11 is sealed with the kiln body 5 by adopting a third sealing device 10, and a flue gas heat exchange pipe 6 is fixed on the side wall in the kiln body 5 by adopting a pipe support frame 12.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.
Claims (4)
1. The gypsum flue gas calcining equipment comprises a kiln body (5) and a flue gas chamber (15), and is characterized in that: the kiln comprises a kiln body (5), wherein one end of the kiln body (5) penetrates through one end of a flue gas chamber (15) and extends to the other end of the flue gas chamber (15), the kiln body (5) is connected into the flue gas chamber (15) through a second sealing device (8), a flue gas circulating chamber (13) is fixed on one end side wall in the kiln body (5), a plurality of flue gas circulating pipes (14) are fixed on one side of the flue gas circulating chamber (13) at equal intervals, one end of each flue gas circulating pipe (14) is jointly fixed with a central flue gas pipe (4), one end of each central flue gas pipe (4) is connected with a tail gas discharge pipe (2) through a first sealing device (3), one end of each tail gas discharge pipe (2) penetrates through the kiln body (5) and extends to one end of the kiln body (5), one side of each tail gas discharge pipe (2) is provided with a feed pipe (1), one end of each feed pipe (1) penetrates through one side of each tail gas discharge pipe (2) and extends to the other end One side, the one end of feed pipe (1) is located the one end of the kiln body (5), just the other end of feed pipe (1) is located in the kiln body (5), the other end of the kiln body (5) is equipped with the opening, just the other end of the kiln body (5) is connected with out workbin (11) through third sealing device (10), one side of flue gas circulation room (13) is equidistant to be fixed with a plurality of flue gas heat exchange tubes (6), one side in the kiln body (5) is run through to the one end of flue gas heat exchange tube (6) and extends to in flue gas room (15), be fixed with two wheel belts (7) on the kiln body (5).
2. The gypsum flue gas calcining equipment as claimed in claim 1, wherein a pipeline supporting frame (12) is fixed on one side in the kiln body (5), and the flue gas heat exchange pipe (6) is fixed on one side of the pipeline supporting frame (12).
3. A gypsum flue gas calcination equipment according to claim 1, wherein the flue gas heat exchange tube (6) is a round tube or a special tube.
4. The gypsum flue gas calcining equipment as claimed in claim 1, characterized in that a gear ring (9) is further fixed on the kiln body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921111274.2U CN210163348U (en) | 2019-07-16 | 2019-07-16 | Gypsum flue gas calcining equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921111274.2U CN210163348U (en) | 2019-07-16 | 2019-07-16 | Gypsum flue gas calcining equipment |
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| CN210163348U true CN210163348U (en) | 2020-03-20 |
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| CN201921111274.2U Active CN210163348U (en) | 2019-07-16 | 2019-07-16 | Gypsum flue gas calcining equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116354631A (en) * | 2023-04-03 | 2023-06-30 | 宁夏博得石膏研究院(有限公司) | Efficient hot air mixing heat exchange type one-step gypsum calcination system and process |
-
2019
- 2019-07-16 CN CN201921111274.2U patent/CN210163348U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116354631A (en) * | 2023-04-03 | 2023-06-30 | 宁夏博得石膏研究院(有限公司) | Efficient hot air mixing heat exchange type one-step gypsum calcination system and process |
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