CN215982640U - Hot-blast furnace for gypsum production - Google Patents

Abstract

The utility model belongs to the field of gypsum production application equipment, and particularly relates to a hot blast stove for gypsum production, which comprises a support table in a concave design, wherein the upper end of the support table comprises a waste heat recovery device and a combustion furnace body which are arranged on the left and right sides, the waste heat recovery device comprises a collection bin and an inner container which are in a hollow cylindrical design, a plurality of heat transfer pipes are arranged in the inner container in a mutually crossed manner, heat transfer fins are arranged in the heat transfer pipes, a heat conduction plate is arranged on the periphery of the inner container, and an oxygen inlet pipe is arranged on the periphery of a shell. The heat conduction device conducts heat to heat carried in the smoke gas leading-out process through the arranged heat conduction fins, the heat conduction plate and the leading-out pipe so as to increase the heat conduction area in the hot blast stove, realize the collection and the conveying of waste heat, effectively improve the utilization rate of the waste heat and ensure the stability of production benefits; the oxygen inlet pipe realizes natural oxygen supply and multi-point oxygen supply of the device, so that fuel is fully combusted, resources and production cost are saved, and economic benefit is improved.

Description

Hot-blast furnace for gypsum production

Technical Field

The utility model belongs to the field of gypsum production application equipment, and particularly relates to a hot blast stove for gypsum production.

Background

Gypsum is a widely used industrial and building material and can be used in gypsum building products, cement retarders, model making, medical food additives, sulfuric acid production, paper fillers, paint fillers, and the like. With the development of society, gypsum materials and gypsum products are widely applied to the decoration and fitment of building interiors, especially the decoration and fitment of family residences. Compared with other similar materials, the gypsum product has the characteristics of relatively light texture, high strength and good fireproof performance, and the board made of the material has the first-grade flame-retardant and fire-resistant grade, and is one of the preferred materials for indoor decoration of various environments.

In the production process of gypsum, heat supply of the gypsum is from a hot blast stove, in the prior art, the used hot blast stove has low waste heat utilization rate, and in the waste heat collection process, the heat transfer area of the gypsum is limited, so that more heat is dissipated, and the benefit is low. Therefore, the prior hot blast stove is improved in consideration of comprehensive benefits so as to meet the use requirement of factory production.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems of low waste heat utilization rate and poor economic benefit caused by limited heat transfer area, the utility model provides the hot blast stove for producing the gypsum, which has reasonable design, simple structure and convenient processing, can effectively increase the heat transfer area, improve the waste heat utilization effect and meet the use requirement of a factory building.

In order to achieve the purpose, the utility model adopts the technical scheme that the hot blast stove for gypsum production comprises a support table in a concave design, the upper end of the support table comprises a waste heat recovery device and a combustion furnace body which are arranged at the left and right sides, a discharge pipe and a smoke guide pipe are arranged between the waste heat recovery device and the combustion furnace body from top to bottom, a blower is arranged at the upper end of the waste heat recovery device, the waste heat recovery device comprises a collection bin and an inner container which are in hollow cylindrical design, a plurality of heat transfer pipes are arranged in the inner container in a mutually crossed manner, heat transfer fins are arranged in the heat transfer pipes, a heat conduction plate is arranged on the periphery of the inner container, the combustion furnace body comprises a shell and a furnace ash collection box which are arranged at the top and the bottom, a reaction bin is arranged in the shell to form a combustion chamber, an oxygen inlet pipe is arranged on the periphery of the shell, and the oxygen inlet pipes are uniformly arrayed on the periphery of the shell in an annular manner, and penetrates through the shell and is communicated with the reaction bin.

Preferably, a plurality of heat transfer fins are annularly arrayed on the inner wall of the heat transfer pipe, three heat transfer plates are uniformly arranged on the periphery of the inner container, and an air flowing cavity is formed between the collection bin and the inner container.

Preferably, delivery tube one end run through and collect the storehouse and be linked together with flowing the gas chamber, the other end runs through casing and reaction storehouse and be linked together with the combustion chamber top, the top of inner bag one side still be provided with the exhaust port and run through and collect the storehouse, the inside geometric centre department of inner bag be provided with the connecting pipe, and its upper end is connected with the exhaust port, delivery tube one end run through and collect storehouse and inner bag and link up mutually with the connecting pipe lower extreme, the other end runs through casing and reaction storehouse and is linked together with the combustion chamber below, the lower extreme in the reaction storehouse be provided with the stone or metal plate for standing a stove on as, reaction storehouse upper end be provided with hot-air delivery tube, and run through the top of casing one side.

Preferably, an access door is arranged below the front end of the collecting bin, a fuel inlet is arranged below the front end of the combustion furnace body and communicated with the reaction bin, and an opening and closing door is arranged at the front end of the furnace ash collecting bin.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. according to the hot blast stove for gypsum production, provided by the utility model, heat conduction of heat carried in a flue gas guiding process can be realized through the arranged heat transfer fins, the heat conduction plate and the guiding-out pipe, so that the heat transfer area in the hot blast stove is increased, the real-time collection and conveying of waste heat are facilitated, the utilization efficiency of the device on the waste heat can be effectively improved, and the stability of production benefits is ensured; through the oxygen inlet pipe that sets up, can realize the nature of device give oxygen and multiple spot give oxygen for fuel burning is abundant, resources are saved and manufacturing cost improve economic benefits.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic structural view of a hot blast stove for gypsum production;

FIG. 2 is a front view of the internal structure and operational operation of a gypsum production hot blast stove;

FIG. 3 is a schematic structural view of a heat transfer tube;

in the above figures, 1, a support table; 2. a waste heat recovery device; 21. a collection bin; 22. an inner container; 23. A heat transfer tube; 24. a heat conducting plate; 25. a gas flow cavity; 26. a smoke outlet; 211. an access door; 231. a heat transfer fin; 3. a burner body; 31. a housing; 32. a furnace ash collecting box; 33. a reaction bin; 34. a furnace plate; 35. a hot air delivery pipe; 36. a fuel inlet; 321. opening and closing the door; 4. a delivery pipe; 5. a smoke guide pipe; 6. a blower; 7. an oxygen inlet pipe.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

In the embodiment, as shown in fig. 1, fig. 2 and fig. 3, a hot blast stove for gypsum production comprises a support table 1 with a concave design, the support table 1 provides convenient conditions for stable installation of each device to ensure the stability of the hot blast stove in use to ensure the smooth proceeding of heat supply work, the upper end of the support table 1 comprises a left and right waste heat recovery device 2 and a combustion furnace body 3, the waste heat recovery device 2 is used for realizing heat transfer and collection of heat carried in the flue gas guiding process and guiding the heat back to the heat supply system to improve the waste heat utilization rate and achieve the purpose of saving energy and production cost, the combustion furnace body 3 is used for facilitating the placement and subsequent combustion of fuel to ensure the stable output of heat, thereby ensuring the smooth proceeding of heat supply work, providing favorable conditions for gypsum production and improving the work process, a guide pipe 4 and a guide pipe 5 are further arranged between the waste heat recovery device 2 and the combustion furnace body 3, the effect of the eduction tube 4 is to lead the heat carried in the collected flue gas back to the reaction chamber 33, and lead the heat generated along with the burning of the fuel out together, so as to complete the heat supply work for the production of gypsum, greatly improve the waste heat utilization rate of the device, and ensure the production benefit, the upper end of the waste heat recovery device 2 is provided with the air blower 6, the air blower 6 blows cold air into the waste heat recovery device 2, the cold air circulates in the heat transfer tube 23 arranged on the inner container 22, the heat carried in the flue gas emission process is collected by heat conduction, and then the heat is led out by the eduction tube 4, so as to complete the waste heat recovery work, so as to achieve the purpose of energy saving, the waste heat recovery device 2 comprises the collection chamber 21 and the inner container 22 which are designed in a hollow cylindrical shape, the inner container 22 is provided with a plurality of heat transfer tubes 23 which are crossed with each other, the inner container 22 is the existing mature technology, the plurality of the inner containers 23 are alternately interpenetrated on the inner container 22, the two ports of the heat transfer pipe 23 can be communicated with each region in the heat conduction plate 24, even if the heat conduction plate 24 is arranged, the mutual communication between the upper part, the middle part and the lower part in the collection bin 21 can be ensured, the convenient circulation of cold air is facilitated, the convenient derivation of the collected waste heat is ensured, meanwhile, a certain space is reserved at the geometric center in the liner 22, the placement of a smoke guide connecting pipe is ensured, the smoke guide connecting pipe can be conveniently connected with the smoke exhaust port 26 and the smoke guide pipe 5, the normal operation of waste heat recovery work is further ensured, the device is more reasonable in design and higher in practicability, the heat transfer fin 231 is arranged in the heat transfer pipe 23, and the heat conduction plate 24 is arranged at the periphery of the liner 22; wherein, mutually supporting of heat transfer fin 231 and heat-conducting plate 24 can realize leading out the heat that the in-process carried to the flue gas and carry out the heat conduction, has effectively increased the heat transfer area in the hot-blast furnace to in real time to the collection and the transport of waste heat, it needs further to explain: the heat transfer fins 231 can be designed into a rectangular shape or a wavy shape, both have better heat transfer and heat conduction effects, meet the energy-saving requirement, and in the working process: in the circulation process of the cold air in the heat transfer pipe 23 and the heat conduction plate 24, the cold air can conduct heat with the heat temporarily stored on the heat transfer fins 231 and the heat conduction plate 24, and the effective collection and the derivation of the waste heat can be ensured in the process, so that the energy-saving purpose is achieved, and the production benefit is improved; the combustion furnace body 3 comprises a shell 31 and a furnace ash collecting box 32 which are arranged up and down, a reaction chamber 33 is arranged in the shell 31 and forms a combustion chamber, an oxygen inlet pipe 7 is arranged on the periphery of the shell 31, a plurality of oxygen inlet pipes 7 are uniformly arranged on the periphery of the shell 31 in an annular array and penetrate through the shell 31 and are communicated with the reaction chamber 33, the oxygen inlet pipes 7 can enable fuel to realize natural oxygen supply in the combustion process, and the oxygen inlet pipes 7 can realize multi-point oxygen supply so as to ensure the sufficient combustion of the fuel and effectively improve the economic benefit; the device can realize heat conduction of heat carried in the flue gas leading-out process through the arranged heat transfer fins 231, the heat conduction plate 24 and the leading-out pipe 4 so as to increase the heat transfer area in the hot blast stove and facilitate the real-time collection and conveying of waste heat, and the device can effectively improve the utilization efficiency of the device on the waste heat and ensure the stability of production benefits; through the oxygen inlet pipe 7, the natural oxygen supply and multi-point oxygen supply of the device can be realized, so that the fuel is fully combusted, the resources and the production cost are saved, and the economic benefit is improved.

In the operation process of the utility model: the fuel generates heat during combustion, wherein most of the heat generated during the combustion process is guided out by the hot air guiding pipe 435 and is connected to the external production equipment to achieve the purpose of supplying heat, and the flue gas generated during the combustion process is guided into the inner container 22 by the smoke guiding pipe 5, and the flue gas also carries part of the heat, which needs to be further explained as follows: in order to ensure that the flue gas can be effectively led out or the leading-out process of the flue gas is improved, an induced draft fan can be connected to one side of the smoke guide pipe 5 so as to ensure that the flue gas can be effectively discharged, the flue gas entering the inner container 22 can circulate in the connecting pipe, and in the process: the heat carried in the flue gas can be conducted with the heat transfer pipe 23, the heat conduction plate 24 and the heat transfer fins 231 in the heat transfer pipe 23, so as to realize the collection and temporary storage of the waste heat; the blower 6 is started, cold air is blown into the collection bin 21 and circulates in the heat conduction plate 24, meanwhile, the cold air is blown into the heat conduction pipe 23 and generates heat conduction with heat, after the cold air and the carried heat are fully conducted, the cold air is guided into the reaction bin 33 through the guide-out pipe 4, and waste heat can be converged with most of heat in the reaction bin 33 and then is guided out to external production equipment so as to ensure the stable operation of heat supply work; after the residual heat of the flue gas is temporarily stored in the inner container 22, the residual heat of the flue gas is discharged through the smoke outlet 26 and is connected with a flue gas purification device, so that the flue gas can reach the emission standard, and the influence on the atmospheric environment is avoided.

In order to further promote waste heat recovery device 2's practicality, and guarantee the stable development of its work, a plurality of heat transfer fin 231 annular array are on the inner wall of heat-transfer pipe 23, three heat-conducting plate 24 evenly sets up the periphery at inner bag 22, mutually support between heat transfer fin 231 and heat-conducting plate 24, can reach effective heat transfer purpose to the heat that carries in the flue gas transportation process, facilitate for waste heat recovery, form heat-conducting plate 24 between collection storehouse 21 and the inner bag 22, this heat-conducting plate 24 facilitates for the leading-in of cold air, and it is more convenient when flowing to cool air, it is further explicated to need: the cold air can enter into the heat-transfer pipe 23 in leading-in back to the heat-transfer plate 24, and under the effect of heat-transfer pipe 23, cold air can fully fill in the upper, middle and lower portion of heat-transfer plate 24 to guarantee the convenience of heat collection in the flue gas, effectively avoid the waste heat to take place to scatter and disappear, and then reach energy-conserving purpose, promote stability in the hot-blast furnace use, improve economic benefits.

In order to ensure that the waste heat recovery device 2 can smoothly complete waste heat recovery work and discharge flue gas, one end of the discharge pipe 4 penetrates through the collection bin 21 and is communicated with the heat conduction plate 24, the other end of the discharge pipe penetrates through the shell 31 and the reaction bin 33 and is communicated with the upper part of the combustion chamber, a smoke outlet 26 is further arranged above one side of the inner container 22 and penetrates through the collection bin 21, a connecting pipe (not shown in the figure) is arranged at the geometric center inside the inner container 22, the upper end of the connecting pipe is connected with the smoke outlet 26, one end of the smoke discharge pipe 5 penetrates through the collection bin 21 and the inner container 22 and is communicated with the lower end of the connecting pipe, the other end of the smoke discharge pipe penetrates through the shell 31 and the reaction bin 33 and is communicated with the lower part of the combustion chamber, a furnace plate 34 is arranged at the lower end inside the reaction bin 33, and a hot air discharge pipe 435 is arranged at the upper end of the reaction bin 33 and penetrates through the upper part of one side of the shell 31; wherein: the heat conducting plate 24 provides favorable conditions for convenient circulation of cold air, so that waste heat recovery work can be effectively completed; the smoke generated in the combustion chamber is discharged through the smoke guide pipe 5, flows from the lower part of the inner container 22 to the upper part of the inner container 22 under the action of the connecting pipe and is finally discharged through the smoke outlet 26, and the connecting pipe not only can prolong the stay time of the smoke in the waste heat recovery device 2, but also can effectively prevent the smoke from leaking, so that the device is ensured to have good sealing property in the using process, and the tidiness of the working environment is improved; the furnace plate 34 can be used for erecting fuel to ensure smooth combustion, and furnace ash formed after fuel combustion can drop into the furnace ash collecting box 32 from the furnace plate 34 to complete convenient collection of the furnace ash, so that convenience is brought to subsequent centralized processing of people.

In order to promote the rationality of device design and the convenience in the use, the below of collecting the storehouse 21 front end is provided with access door 211, make things convenient for people to carry out convenient maintenance and maintenance to each part operational aspect in the waste heat recovery device 2, guarantee that the device is safer when using, prevent that unnecessary damage from taking place, the below of the 3 front ends of burning furnace body is provided with into fuel mouth 36, and be linked together with reaction bin 33, make things convenient for people to the interpolation of fuel, stove ash collecting box 32 front end is provided with door 321 that opens and shuts, treat the fuel burning back, produced stove ash can fall into in the stove ash collecting box 32 by reaction bin 33, the setting of door 321 that opens and shuts is convenient for people to the clearance of stove ash, guarantee the clean and tidy nature of device, also bring the facility for the subsequent burning of fuel.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims (4)

1. A hot blast stove for gypsum production comprises a supporting table in a concave design, and is characterized in that the upper end of the supporting table comprises a waste heat recovery device and a combustion furnace body which are arranged on the left and right sides, a discharge pipe and a smoke guide pipe are arranged between the waste heat recovery device and the combustion furnace body from top to bottom, an air blower is arranged at the upper end of the waste heat recovery device, the waste heat recovery device comprises a collection bin and an inner container which are in a hollow cylindrical design, a plurality of heat transfer pipes are arranged in the inner container in a mutually crossed manner, heat transfer fins are arranged in the heat transfer pipes, a heat transfer plate is arranged on the periphery of the inner container, the combustion furnace body comprises a shell and a furnace ash collection box which are arranged from top to bottom, a reaction bin is arranged in the shell, a combustion chamber is formed, an oxygen inlet pipe is arranged on the periphery of the shell, and a plurality of the oxygen inlet pipes are uniformly arranged on the periphery of the shell in an annular array manner, and penetrates through the shell and is communicated with the reaction bin.

2. The hot blast stove for producing gypsum according to claim 1, wherein a plurality of heat transfer fins are annularly arrayed on the inner wall of the heat transfer pipe, three heat conduction plates are uniformly arranged on the periphery of the inner container, and a gas flow cavity is formed between the collection bin and the inner container.

3. The hot blast stove for gypsum production according to claim 2, wherein one end of the delivery pipe penetrates through the collection bin and is communicated with the flow gas cavity, the other end of the delivery pipe penetrates through the shell and the reaction bin and is communicated with the upper part of the combustion chamber, a smoke outlet is further arranged above one side of the inner container and penetrates through the collection bin, a connecting pipe is arranged at the geometric center inside the inner container, the upper end of the connecting pipe is connected with the smoke outlet, one end of the delivery pipe penetrates through the collection bin and the inner container and is communicated with the lower end of the connecting pipe, the other end of the delivery pipe penetrates through the shell and the reaction bin and is communicated with the lower part of the combustion chamber, a furnace tray is arranged at the lower end inside the reaction bin, and a hot air delivery pipe is arranged at the upper end of the reaction bin and penetrates through the upper part of one side of the shell.

4. The hot blast stove for gypsum production according to claim 3, wherein an access door is arranged below the front end of the collection bin, a fuel inlet is arranged below the front end of the combustion furnace body and communicated with the reaction bin, and an opening and closing door is arranged at the front end of the furnace ash collection box.

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