CN112361798A - Rotary drying and calcining machine using steam as heating source - Google Patents
Rotary drying and calcining machine using steam as heating source Download PDFInfo
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- CN112361798A CN112361798A CN202011222539.3A CN202011222539A CN112361798A CN 112361798 A CN112361798 A CN 112361798A CN 202011222539 A CN202011222539 A CN 202011222539A CN 112361798 A CN112361798 A CN 112361798A
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- steam
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- heat exchange
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/30—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containers; with movement performed by rotary floors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/08—Rotary-drum furnaces, i.e. horizontal or slightly inclined externally heated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/32—Arrangement of devices for charging
- F27B7/3205—Charging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/32—Arrangement of devices for charging
- F27B7/3205—Charging
- F27B2007/3211—Charging at the open end of the drum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/03—Calcining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a rotary drying and calcining machine taking steam as a heating source, wherein materials are fed into a movable feeder from an inserting plate type air locking feeder, enter the rotary drying and calcining machine, are subjected to heating, drying and calcining treatment in sections through a steam heat exchange pipeline, and finished materials are discharged through a tail discharging air locking device. The invention solves the problems of the adhesion of wet and sticky materials at the feeding end and the air leakage at the feeding end, and simultaneously solves the problem that the common air-locking feeding machine cannot stably operate when conveying the wet and sticky materials. The invention solves the problems of equipment adhesion and corrosion of wet and viscous materials in the heating, drying and calcining processes. The invention defines the functions of each section by segmentation, carries out targeted step-by-step treatment on the materials with different physical characteristics of each section, solves the problem of mixing raw materials and clinker of finished products, and improves the use efficiency of steam.
Description
Technical Field
The invention belongs to the field of drying and calcining in the building material industry, and particularly relates to a rotary drying and calcining machine taking steam as a heating source.
Background
With the improvement of the national requirement on the environment, most of the original drying and calcining equipment uses coal to combust to generate heat for drying and calcining, and the emission does not reach the standard. The invention relates to a drying and calcining device using steam as a heating source, which is mainly used for drying and calcining moisture-containing materials such as chemical phosphate fertilizer tailings, phosphogypsum, power plant desulfurized gypsum, fly ash and the like in the building material industry. Is an environment-friendly and energy-saving device which is a substitute for the old drying device. Large heat exchange area, high heat efficiency, continuous and reliable operation, environmental protection and energy conservation. The steam pressure is adapted to be 0.5-1.6MPa, and the steam temperature is 150-.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the defects of the prior art, the invention provides a rotary drying and calcining machine which takes steam as a heating source.
The technical scheme is as follows: a rotary drying and calcining machine taking steam as a heating source comprises an inserting plate type air locking feeding machine, a movable feeding machine, a waste gas discharging device, a rotary cylinder body, a rapping device, a steam heat exchange pipeline, a material partition plate, a steam distribution device, a steam inlet and water discharging device, a tail end guide plate, a driving device, a cylinder body supporting and rotating device, a cylinder body axial positioning device, an air inlet discharging cover and a discharging air locking device;
the inside of the rotary cylinder is provided with a steam heat exchange pipeline, the steam heat exchange pipeline is divided into three sections through material partition plates, the first section is a preheating section from a feeding end, the section of pipeline is a light pipe, the wall of the section of pipeline is thickened, the inner wall of the corresponding cylinder is lined with a stainless steel plate, the stainless steel plate is anticorrosive and anti-sticking to form a block, the outer wall of the section of cylinder is provided with a rapping device, and the material of the cylinder wall is prevented from being stuck; the second section is a drying section, and an axial shovelling plate is welded on the outer wall of the pipeline of the section, so that the heat exchange area of the material is increased, and the material lifting and distributing effects are achieved, so that the material can fully exchange heat with a heat source; the third section is a calcining section, and the outer wall of the pipeline of the section is welded with an annular heat exchange sheet, so that the heat exchange area of the material is increased, and the material crystal water is calcined and dehydrated. The tail part of the calcining section is provided with a steam distribution device and a tail end material guide plate;
the movable feeder is inserted into the rotary cylinder through the waste gas exhaust device, and a plug-in plate type air locking feeder is arranged above the movable feeder;
a driving device is arranged below the rotary cylinder, the cylinder supports the rotating device, and the cylinder is axially positioned;
the tail part of the rotary cylinder body is sequentially connected with an air inlet and outlet cover and a steam inlet and outlet device, and a discharge air locking device is connected below the air inlet and outlet cover.
As an optimization: the movable feeder is of a helical band type anti-sticking structure, and the tail end of the movable feeder is provided with a wear-resistant sliding bearing; the bottom is provided with a wheel type moving device for convenient drawing and maintenance; the movable feeder is exposed out of the shell and is circular, the inserting part is U-shaped, waste gas is conveniently discharged, and blockage of viscous materials is prevented.
As an optimization: the waste gas discharging device is internally provided with the axial baffle plate, so that materials in waste gas can conveniently enter the U-shaped groove, and the movable feeder can be conveniently drawn out.
As an optimization: the steam distribution device is internally provided with 3 independent spaces for facilitating air intake and water discharge.
As an optimization: the tail end guide plate is arranged at the front end of the steam distribution device, so that materials can overflow from the center of the distributor.
Has the advantages that: the advantages of the invention are as follows:
1. the inserting plate type air locking feeder is used for feeding materials by alternately opening and closing the upper inserting plate and the lower inserting plate, and is suitable for feeding viscous materials. The plug board type air locking feeding machine is composed of a blocking valve plate, a mounting seat and a telescopic device, two sets of air locking devices are arranged on an air locking valve body, an air locking valve body cavity is divided into a feeding cavity, a sealing cavity and a discharging cavity, air locking can be achieved between two adjacent cavities, the air locking effect is improved, materials on the blocking valve plate can be removed through the scraper, the materials are prevented from being stacked, and the problem of condensation is generated.
2. The movable feeder is of a spiral band type anti-sticking structure, and the tail end of the movable feeder is provided with a wear-resistant sliding bearing; the bottom is provided with a wheel type moving device for convenient drawing and maintenance; the movable feeder is exposed out of the shell and is circular, the inserting part is U-shaped, waste gas is conveniently discharged, and blockage of viscous materials is prevented.
3. According to the invention, the steam heat exchange pipeline is arranged in the rotary cylinder body and is divided into three sections through the material partition plates, so that the functions of the sections are defined, the materials with different physical characteristics in each section are processed step by step in a targeted manner, and the problem of mixing raw materials and clinker of finished materials is solved. The specific arrangement structure is as follows: from the feed end, the first section is a preheating section, the pipeline of the section is a light pipe, the pipe wall of the section is thickened, the inner wall of the corresponding barrel is lined with a stainless steel plate, and the outer wall is provided with a rapping device, so that the problems of adhesion, corrosion and no flowing of wet materials at the front section to the pipeline and the barrel wall are effectively solved; the second section is a drying section, and an axial shoveling plate is welded on the outer wall of the pipeline of the section, so that the materials stay on the pipeline, the heat exchange contact time is prolonged, and meanwhile, the materials are lifted to be fully contacted with hot air, and the materials are further dried; the third section is a calcining section, and the outer wall of the pipeline of the section is welded with an annular heat exchange sheet, so that the heat exchange area of the material is increased, and the dehydration efficiency of the crystal water of the material is improved. The discharge end at the tail part of the calcining section is blocked by the steam distribution device, so that the material level of the material in the section of the cylinder body is improved, the contact time of the material and the heat exchange tube is longer, and the optimal calcining effect is achieved.
Drawings
FIG. 1 is a schematic diagram of the specific structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the steam heat exchange tube of the present invention;
FIG. 3 is a schematic view of the material divider plate configuration of the present invention;
fig. 4 is a schematic diagram of the mobile feeder structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Specific example 1
As shown in figure 1, the device of the invention is a rotary drying and calcining machine using steam as a heating source, and comprises a plug-in plate type air locking feeder 1, a movable feeder 2, a waste gas exhaust device 3, a rotary cylinder 4, a rapping device 5, a steam heat exchange pipeline 6, a material partition plate 7, a steam distribution device 8, a steam inlet and water exhaust device 9, a tail end guide plate 10, a driving device 11, a cylinder supporting and rotating device 12, a cylinder axial positioning device 13, an air inlet and outlet cover 14 and an outlet air locking device 15.
As shown in fig. 2-3, a steam heat exchange pipeline 6 is arranged in the rotary cylinder 4, the steam heat exchange pipeline 6 is divided into three sections by a material partition plate 7, the first section is a preheating section from the feed end, the pipeline is a light pipe 6-1, the pipe wall of the section is thickened, the inner wall of the corresponding cylinder is lined with a stainless steel plate, the stainless steel plate is corrosion-resistant and anti-sticking to form a block, a rapping device 5 is distributed on the outer wall of the cylinder of the section, and the material sticking of the cylinder wall is prevented; the second section is a drying section, and an axial shovelling plate 6-2 is welded on the outer wall of the pipeline of the section, so that the heat exchange area of the material is increased, and the material lifting and distributing effects are achieved, so that the material can fully exchange heat with a heat source; the third section is a calcining section, and annular heat exchange fins 6-3 are welded on the outer wall of the pipeline of the section, so that the heat exchange area of the material is increased, and the material crystal water is calcined and dehydrated. The tail part of the calcining section is provided with a steam distribution device 8 and a tail end material guide plate 10, and 3 independent spaces are arranged in the steam distribution device 8 to facilitate air inlet and water discharge. A terminal guide plate 10 is provided at the front end of the steam distribution unit 8 so that the material overflows from the center of the distributor.
As shown in fig. 4, the movable feeder 2 is a helical band type anti-sticking structure, and the tail end of the movable feeder is provided with a wear-resistant sliding bearing; the bottom is provided with a wheel type moving device for convenient drawing and maintenance; the exposed shell of the movable feeder 2 is circular, and the inserted part is U-shaped, so that waste gas is conveniently discharged, and blockage of viscous materials is prevented. Movable feeder 2 inserts gyration barrel 4 through exhaust gas eduction gear 3, and the inside axial striker plate that sets up of exhaust gas eduction gear 3, the material in the waste gas of being convenient for gets into U type groove, makes things convenient for movable feeder 2 to take out simultaneously. A plug board type air locking feeder 1 is arranged above the movable feeder 2; the inserting plate type air locking feeder 1 feeds materials by alternately opening and closing an upper inserting plate and a lower inserting plate, and is suitable for feeding viscous materials. The plug board type air locking feeding machine is composed of a blocking valve plate, a mounting seat and a telescopic device, two sets of air locking devices are arranged on an air locking valve body, an air locking valve body cavity is divided into a feeding cavity, a sealing cavity and a discharging cavity, air locking can be achieved between two adjacent cavities, the air locking effect is improved, materials on the blocking valve plate can be removed through the scraper, the materials are prevented from being stacked, and the problem of condensation is generated.
A driving device 11 is arranged below the rotary cylinder 4, the cylinder supports a rotating device 12, and a cylinder axial positioning device 13; the tail part of the rotary cylinder body 4 is sequentially connected with an air inlet and outlet cover 14 and a steam inlet and water discharge device 9, and a discharge air locking device 15 is connected below the air inlet and outlet cover 14.
The heating process of the material in the rotary cylinder 4 in this embodiment is as follows: the upper end pipeline heats air in the barrel, the lower end pipeline directly heats materials, the rotary barrel is obliquely arranged at a certain angle according to different materials, and the materials are driven by the rotary barrel to be lifted and pushed to the lower end. The steam heat exchange pipeline in the rotary cylinder body is in contact with the materials to heat the materials, the materials are lifted by the heat exchange pipeline and are subjected to heat exchange with hot air in the cylinder body again, and the materials are heated to a temperature of more than 80 ℃. And (3) primarily heating the dried material, and pushing the material into a drying section through a spiral material guide partition plate. The rapping device shakes down the materials adhered between the heat exchange pipelines. The heat exchange tube of the drying section is provided with an axial material shoveling plate to enable the materials to stay on the pipeline, so that the heat exchange contact time is prolonged, and meanwhile, the materials are lifted to be fully contacted with hot air, and the materials are further dried. The dried material is guided into the calcining section by a spiral material guiding partition plate. The calcining section pipeline is provided with the heat exchange fins in the circumferential direction, so that the heat exchange area is increased, the material level of the material in the section of the cylinder body is improved by blocking the discharge end by the steam distribution device, and the contact time of the material and the heat exchange pipe is longer, so that the optimal calcining effect is achieved. The hot air generated in the section is reversely led to the drying section and the heating section by a system induced draft fan, and the heat energy in the cylinder is increased. The calcined finished product materials are pushed by the material guide plate and overflow through the central hole of the steam distribution device. And (4) entering a discharging cover, and discharging the finished product materials through an air locking discharging valve.
Claims (6)
1. The utility model provides an use gyration stoving calcining machine of steam as heating source which characterized in that: the device comprises a plug board type air locking feeding machine (1), a movable feeding machine (2), a waste gas discharge device (3), a rotary cylinder body (4), a rapping device (5), a steam heat exchange pipeline (6), a material partition plate (7), a steam distribution device (8), a steam air inlet and water discharge device (9), a tail end guide plate (10), a driving device (11), a cylinder body supporting and rotating device (12), a cylinder body axial positioning device (13), an air inlet and outlet cover (14) and an outlet air locking device (15);
a steam heat exchange pipeline (6) is arranged in the rotary cylinder (4), the steam heat exchange pipeline (6) is divided into three sections through material partition plates (7), the first section is a preheating section from a feeding end, the section of pipeline is a light pipe (6-1), the pipe wall of the section is thickened, a stainless steel plate is lined on the inner wall of the corresponding cylinder, the stainless steel plate is corrosion-resistant and anti-sticking to form a block, a rapping device (5) is distributed on the outer wall of the section of cylinder, and the cylinder wall is prevented from being bonded by materials; the second section is a drying section, and an axial shovelling plate (6-2) is welded on the outer wall of the pipeline of the section, so that the heat exchange area of the material is increased, and the material lifting and distributing effects are achieved, so that the material can fully exchange heat with a heat source; the third section is a calcining section, the outer wall of the pipeline of the section is welded with an annular heat exchange sheet (6-3) to increase the heat exchange area of the material and calcine and dehydrate crystal water of the material, and the tail part of the calcining section is provided with a steam distribution device (8) and a tail end guide plate (10);
the movable feeder (2) is inserted into the rotary cylinder (4) through the waste gas exhaust device (3), and the inserting plate type air locking feeder (1) is arranged above the movable feeder (2);
a driving device (11) is arranged below the rotary cylinder (4), the cylinder supports a rotating device (12), and a cylinder axial positioning device (13);
the tail part of the rotary cylinder body (4) is sequentially connected with an air inlet and outlet cover (14) and a steam air inlet and drainage device (9), and an air outlet air locking device (15) is connected below the air inlet and outlet cover (14).
2. The rotary drying and calcining machine using steam as a heating source according to claim 1, characterized in that: the inserting plate type air locking feeding machine (1) is composed of a blocking valve plate, a mounting seat and a telescopic device, two groups of air locking devices are arranged on an air locking valve body, a cavity of the air locking valve body is divided into a feeding cavity, a closed cavity and a discharging cavity, and a scraper plate used for removing adhesive materials is arranged on the mounting seat.
3. The rotary drying and calcining machine using steam as a heating source according to claim 1, characterized in that: the movable feeder (2) is of a helical band type anti-sticking structure, and the tail end of the movable feeder is provided with a wear-resistant sliding bearing; the bottom is provided with a wheel type moving device for convenient drawing and maintenance; the exposed shell of the movable feeder (2) is circular, and the inserted part is U-shaped, so that waste gas is conveniently discharged, and blockage of viscous materials is prevented.
4. The rotary drying and calcining machine using steam as a heating source according to claim 1, characterized in that: the waste gas discharging device (3) is internally provided with an axial baffle plate, so that materials in waste gas can conveniently enter the U-shaped groove, and the movable feeding machine (2) can be conveniently drawn out.
5. The rotary drying and calcining machine using steam as a heating source according to claim 1, characterized in that: the steam distribution device (8) is internally provided with 3 independent spaces for facilitating air intake and water discharge.
6. The rotary drying and calcining machine using steam as a heating source according to claim 1, characterized in that: the tail end guide plate (10) is arranged at the front end of the steam distribution device (8) so that materials can overflow from the center of the distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222539.3A CN112361798A (en) | 2020-11-05 | 2020-11-05 | Rotary drying and calcining machine using steam as heating source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222539.3A CN112361798A (en) | 2020-11-05 | 2020-11-05 | Rotary drying and calcining machine using steam as heating source |
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| Publication Number | Publication Date |
|---|---|
| CN112361798A true CN112361798A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011222539.3A Pending CN112361798A (en) | 2020-11-05 | 2020-11-05 | Rotary drying and calcining machine using steam as heating source |
Country Status (1)
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| CN (1) | CN112361798A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166019A (en) * | 2021-11-10 | 2022-03-11 | 湖南德景源科技有限公司 | Powder material sintering furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166019A (en) * | 2021-11-10 | 2022-03-11 | 湖南德景源科技有限公司 | Powder material sintering furnace |
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Application publication date: 20210212 |