CN103435276A - Production apparatus of active lime - Google Patents
Production apparatus of active lime Download PDFInfo
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- CN103435276A CN103435276A CN2013103186879A CN201310318687A CN103435276A CN 103435276 A CN103435276 A CN 103435276A CN 2013103186879 A CN2013103186879 A CN 2013103186879A CN 201310318687 A CN201310318687 A CN 201310318687A CN 103435276 A CN103435276 A CN 103435276A
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Abstract
The invention discloses a production apparatus of active lime, and belongs to the field of active lime calcining technologies. The production apparatus comprises a feeing device, a calcining device, and a separating and waste heat utilization device, wherein a fluid-bed furnace is used as the calcining device. The production apparatus is capable of saving resources, increasing resource utilization rate, and avoiding waste of limestone mine tailing, and can be directly used for calcining limestone with granularity less than 10mm. The production apparatus is characterized in that: processes are simple, cost is low, product quality is high, investment is less, operation and maintenance are simple, energy is saved, the production apparatus is friendly to the environment and is clean, and fuel is widely available.
Description
Technical field
The present invention relates to quickened lime calcining technology field.
Background technology
Along with China's expanding economy, metallurgy, chemical industry, building material industry increase day by day to the demand of quickened lime.The production equipment of active lime calcination mainly contains several kiln types such as single thorax shaft furnace, Maers Kiln, Fu Kasi kiln, rotary kiln, suspension kiln.But no matter which kind of kiln type, only have the Wingdale of granularity>10mm just can be effectively utilized, and the Wingdale of granularity<10mm must be crushed to below 1mm, could use suspension kiln to be calcined.Simultaneously, the mine tailing wastage of limestone mine is surprising, and preresearch estimates, more than every annual amount at least reaches ten-million-ton scale.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of active lime production plant, this production equipment is specifically designed to the Wingdale of calcining granularity<10mm, solve the problem of limestone mine mine tailing waste, operation is simple, with low cost, Functionality, quality and appealing design, economize on resources, and improves resource utilization.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of active lime production plant, comprise feeding device, roasting assembly, separation and residual heat using device, and roasting assembly is fluidized furnace.
The preferred structure of fluidized furnace comprises body of heater, bottom of furnace body is provided with the furnace bottom bellows, and in body of heater, furnace bottom bellows top is provided with distribution plate, and distribution plate top lower portion of furnace body is furnished with two row's burners, between two row's burners, body of heater is provided with the fluidized furnace filling tube, and body of heater top sidewall is provided with the fluidized furnace discharge port; Body of heater is rectangle or circle.
Preferably, arrangement of burner is the double layout in relative both sides or annular double layout; The relative double layout in both sides, the fluidized furnace that body of heater is rectangle, the relative both sides burner that is arranged in parallel, every side is arranged two rows, the upper and lower staggered arrangement in position of upper row's burner and lower row's burner, the burner position of relative both sides is staggered front to back layout; Double being arranged as around body of heater of annular, the two rows burner that is circular layout, the upper and lower staggered arrangement in position of upper row's burner and lower row's burner.
Burner fuel is geseous fuel, liquid fuel or solid fuel.
Preferably, burner fuel is geseous fuel.
Feeding device comprises chapelet, raw material cabin and chute, and chapelet discharge port below is provided with raw material cabin, and the raw material cabin below is provided with star-shaped ash unloading valve, and the star-shaped ash unloading valve below is provided with chute, and the chute outlet communicates with the fluidized furnace filling tube;
Separation and residual heat using device comprise the first tornado dust collector, the second tornado dust collector, sack cleaner, cooling room, cooling blower, booster fan, interchanger, primary air fan, wind pipeline of preheating, the first finished bin, the second finished bin, induced draft fan and chimney, described the first tornado dust collector opening for feed communicates with the fluidized furnace discharge port, the first tornado dust collector below discharge port and cooling room feeding inlet, the cooling room blast inlet communicates with the cooling blower air outlet, cooling room discharge port and the second tornado dust collector feeding inlet, the second tornado dust collector below discharge port communicates with the first finished bin, the second tornado dust collector top air outlet communicates with the booster fan blast inlet, and the booster fan air outlet communicates with fluidized furnace furnace bottom bellows, the first tornado dust collector top high-temperature flue gas outlet communicates with the interchanger inlet mouth, interchanger air outlet and sack cleaner feeding inlet, and the below discharge port of interchanger and sack cleaner communicates by pipeline, and pipe outlet communicates with the second finished bin, the interchanger blast inlet communicates with the primary air fan air outlet, and the interchanger air outlet communicates with chute and burner respectively by wind pipeline of preheating, the sack cleaner air outlet communicates with the induced draft fan import, and the induced draft fan outlet communicates with chimney by smoke discharging pipe.
Fluidized furnace, the first tornado dust collector, the second tornado dust collector, sack cleaner, wind pipeline of preheating, chute and cooling room outside are provided with lagging material; Fluidized furnace, the first tornado dust collector and cooling room inside are provided with high temperature material.
The principle of this production equipment is: pre-heat primary air is blown into from fluidized furnace furnace bottom bellows, the fuel combustion sprayed into burner, the Wingdale small-particle of granularity<10mm that calcining adds simultaneously, along with limestone calcination is quickened lime, complete decomposition, its density diminishes immediately, by the high-temperature flue gas fluidisation, and discharge out of the furnace with high-temperature flue gas, then carry out cooling, collection.Wingdale small-particle for granularity>10mm, due to heavier, can not in fluidized furnace, with high-temperature flue gas, suspend, produce quickened lime so can not use this device, but for the limestone mine mine tailing of granularity<20mm, only need carry out simple crushing, be processed into the Wingdale of granularity<10mm, can be used for this production equipment, therefore solved the problem of limestone mine mine tailing waste fully.
The beneficial effect that adopts technique scheme to produce is as follows:
(1) the present invention economizes on resources, and improves resource utilization.But utilize the Wingdale of fluidized furnace dinectly bruning granularity<10mm, solve the problem of limestone mine mine tailing waste, and operation is simple, with low cost, Functionality, quality and appealing design.
(2) less investment, difficulty of construction is low.Most equipment is general-purpose equipment in industry.
(3) operation, maintenance are simply.Consumer is mainly blower fan, and fewer.
(4) save energy.The temperature of outer waste air and finished product ash institute heat content all are recycled utilization to greatest extent.In system, hot equipment and pipeline also adopt heat insulation, insulation processing, reduce to greatest extent system device surface thermosteresis.
(5) environment-protecting clean.The whole system closed operation, except material loading, finished product outward transport airborne dust and system waste gas efflux, there is not other points of contamination in whole system.System waste gas is through the processing of bag-type dust, within dust content is easy to be controlled at national standard.Material loading and finished product arrange separately dust-removal system also can meet environmental requirement.Simultaneously, except blower fan, the large noise equipment less than other, be also very effective to the control of noise in system.
(6) fuel is widely applicable.No matter be geseous fuel, liquid fuel or solid fuel, all can effectively use.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;
Fig. 1 is structural representation of the present invention;
Fig. 2 is fluidized furnace structural representation of the present invention;
Fig. 3 is upper row's sectional schematic diagram of burner 4 when in Fig. 2, body of heater is rectangle;
Fig. 4 is the next row sectional schematic diagram of burner 4 when in Fig. 2, body of heater is rectangle;
Fig. 5 is upper row's sectional schematic diagram of burner 4 when in Fig. 2, body of heater is for circle;
Fig. 6 is the next row sectional schematic diagram of burner 4 when in Fig. 2, body of heater is for circle;
In figure: 1, chapelet; 2, raw material cabin; 3, fluidized furnace; 4, burner; 5, the first tornado dust collector; 6, cooling room; 7, cooling blower; 8, the second tornado dust collector; 9, the first finished bin; 10, booster fan; 11, primary air fan; 12, interchanger; 13, sack cleaner; 14, induced draft fan; 15, chimney; 16, the second finished bin; 17, wind pipeline of preheating; 18, chute; 19, furnace bottom bellows; 20, distribution plate; 21, fluidized furnace filling tube; 22, fluidized furnace discharge port; 23, body of heater.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of active lime production plant, comprise feeding device, roasting assembly, separation and residual heat using device, and roasting assembly is fluidized furnace 3.
The structure (see figure 2) of fluidized furnace comprises body of heater 23, body of heater 23 bottoms are provided with furnace bottom bellows 19, the interior furnace bottom bellows of body of heater 23 top is provided with distribution plate 20, distribution plate top body of heater 23 lower disposed have two row's burners 4, between two row's burners 4, body of heater 23 is provided with fluidized furnace filling tube 21, and body of heater 23 top sidewalls are provided with fluidized furnace discharge port 22; Body of heater 23 is rectangle.
Burner 4 fuel are geseous fuel.Geseous fuel can be coal gas of converter, coke-oven gas, blast furnace gas, producer gas, Sweet natural gas etc.Geseous fuel is more clean, and the operation proportioning is also more convenient, on the almost not impact of end product quality.
When geseous fuel is the low heat value chiral molecular geseous fuel such as blast furnace gas or coal gas of converter, interchanger 12 also can carry out preheating to geseous fuel, and to reach the raising temperature of combustion, save energy, improve the purpose of combustionvelocity.
Feeding device comprises chapelet 1, raw material cabin 2 and chute 18, and chapelet 1 discharge port below is provided with raw material cabin 2, and raw material cabin 2 belows are provided with star-shaped ash unloading valve, and the star-shaped ash unloading valve below is provided with chute 18, and chute 18 outlets communicate with fluidized furnace filling tube 21;
Separation and residual heat using device comprise the first tornado dust collector 5, the second tornado dust collector 8, sack cleaner 13, cooling room 6, cooling blower 7, booster fan 10, interchanger 12, primary air fan 11, wind pipeline 17 of preheating, the first finished bin 9, the second finished bin 16, induced draft fan 14 and chimney 15, described the first tornado dust collector 5 opening for feeds communicate with fluidized furnace discharge port 22, the first tornado dust collector 5 below discharge ports and cooling room 6 feeding inlet, cooling room 6 blast inlets communicate with cooling blower 7 air outlets, cooling room 6 discharge ports and the second tornado dust collector 8 feeding inlet, the second tornado dust collector 8 below discharge ports communicate with the first finished bin 9, the second tornado dust collector 8 top air outlets communicate with booster fan 10 blast inlets, and booster fan 10 air outlets communicate with fluidized furnace 3 furnace bottom bellows 19, the first tornado dust collector 5 top high-temperature flue gas outlets communicate with interchanger 12 inlet mouths, interchanger 12 air outlets and sack cleaner 13 feeding inlet, the below discharge port of interchanger 12 and sack cleaner 13 communicates by pipeline, and pipe outlet communicates with the second finished bin 16, interchanger 12 blast inlets communicate with primary air fan 11 air outlets, and interchanger 12 air outlets communicate with chute 18 and burner 4 respectively by wind pipeline 17 of preheating, sack cleaner 13 air outlets communicate with induced draft fan 14 imports, and induced draft fan 14 outlets communicate with chimney 15 by smoke discharging pipe.
Fluidized furnace 3, the first tornado dust collector 5, the second tornado dust collector 8, sack cleaner 13, wind pipeline 17 of preheating, chute 18 and cooling room 6 outsides are provided with lagging material, lagging material can adopt the thermal conductivitys such as rock wool, silicate aluminum board, pearl expansive rock low, heat-insulating property is good, water-intake rate is low, the lagging material that resistance toheat is good.Fluidized furnace 3, the first tornado dust collector 5 and cooling room 6 inside are provided with high temperature material, and high temperature material is mainly used alkaline-resisting enhancing mould material, low cement deposit material and alumina firebrick etc.
When this device is used, chapelet 1 carries the Wingdale raw material of granularity<10mm into raw material cabin 2, raw material cabin 2 belows are provided with the even blanking of star-shaped ash unloading valve, and under valve, by chute 18 and fluidized furnace filling tube 21, the wind of preheating in wind pipeline 17 of preheating enters fluidized furnace 3 to the Wingdale raw material; Complete Wingdale raw material calcining work in fluidized furnace 3, heat is supplied with by burner 4.
After having calcined, quickened lime enters the first tornado dust collector 5 with high-temperature flue gas, completing fertilizer within it separates, most of high temperature active lime falls in cooling room 6, cooling blower 7 to cooling room 6, completes the cooling of the preheating of cooling air and high temperature active lime by cooling wind, and preheating cooling air and cooling quickened lime enter in the second tornado dust collector 8, complete hereinto Conveyance, cooling quickened lime falls into the first finished bin 9.The preheating cooling air after purifying by the second tornado dust collector 8 from the upper side air outlet discharge after booster fan 10 pressurizations, from fluidized furnace 3 furnace bottom bellows 19, be blown into fluidized furnace 3, for Wingdale raw material fluidisation.
In the first tornado dust collector 5, have small part quickened lime small-particle to enter in interchanger 12 and sack cleaner 13 with high-temperature flue gas, the powder quickened lime of collecting through interchanger 12, sack cleaner 13 enters the second finished bin 16.
Primary air fan 11 goes out a wind, and through interchanger, 12 preheatings obtain pre-heat primary air, and high-temperature flue gas reduces the temperature to below 180 ℃ simultaneously, after sack cleaner 13 purifying treatment, delivers to chimney 15 by induced draft fan 14 to efflux; A pre-heat primary air part is as the heat air delivery of carrying the Wingdale raw material, the Wingdale raw material is blown into to fluidized furnace 3 by chute 18 and fluidized furnace filling tube 21, another part is as the combustion air of burner 4, enter in burner 4 through wind pipeline 17 of preheating, efflux high-temperature flue gas institute heat content and be utilized.
The main technologic parameters of fluidized furnace 3 active lime calcinations is:
1200 ℃ ± 50 ℃ of calcining temperatures
Calcination time 3 min-15min
350 ℃ ± 50 ℃ of furnace bottom air temperatures
Come out of the stove 800 ℃ ± 50 ℃ of air temperatures
Furnace pressure-40 Pa--80Pa
Fluidized furnace 3 specifications that body of heater 23 is rectangle and quickened lime day output synopsis, in Table 1.
Table 1
| The fluidized furnace specification that body of heater is rectangle | 2.5m×2.5m | 2m×2m |
| The quickened lime day output | 150T | 100T |
While applying the Wingdale raw material that this device calcining chemical composition is table 2, the activity degree of the quickened lime of producing can reach 340ml, Functionality, quality and appealing design.
Table 2
| CaO | SiO 2 | S | Water content |
| ≥52% | ≤1.5% | ≤0.025% | ≤1% |
This installs quickened lime itself that the first tornado dust collector 5 accept with a large amount of heats, and high temperature active lime also is inconvenient to store, transport.So, cooling apparatus must be set specially, so that the finished product ash under collected to the first tornado dust collector 5 carries out cooling.The cooling air of cooling quickened lime obtains preheating simultaneously, can be used for Wingdale raw material fluidisation, and therefore, high temperature active lime institute heat content is utilized to greatest extent, save energy.
The whole system closed operation, except material loading, finished product outward transport airborne dust and system waste gas efflux, there is not other points of contamination in whole system.System waste gas is through the processing of bag-type dust, within dust content is easy to be controlled at national standard.Material loading and finished product arrange separately dust-removal system also can meet environmental requirement.Simultaneously, except blower fan, the large noise equipment less than other, be also very effective to the control of noise in system.
The first finished bin 9 and the second finished bin 16 are divided into and are unloaded ash or pneumatic transport equipment, in order to quickened lime is transported outward.
Embodiment 2
Be that with the difference of embodiment 1 body of heater 23 is for circular.
Burner 4 fuel are liquid fuel.Liquid fuel can be all suitable liquid fuels that act as a fuel such as heavy oil, heavy diesel, LIGHT DIESEL OIL.
Body of heater 23 is circular fluidized furnace 3 specifications and quickened lime day output synopsis, in Table 3.
Table 3
| Body of heater is circular fluidized furnace specification | φ4.0m | φ3.6m | φ3.2m | φ2.8m |
| The quickened lime day output | 400T | 300T | 200T | 150T |
Embodiment 3
Be that with the difference of embodiment 1 burner 4 fuel are solid fuel.Solid fuel is coal dust, should be noted when using coal dust to act as a fuel, and will affect the quality of finished product quickened lime, because the coal ash that in the hot flue gas of the processing set-up of following current, coal dust is brought into is difficult to separate from the finished product quickened lime.
Claims (7)
1. an active lime production plant, comprise feeding device, roasting assembly, separation and residual heat using device, it is characterized in that: roasting assembly is fluidized furnace (3).
2. a kind of active lime production plant according to claim 1, the structure that it is characterized in that described fluidized furnace comprises body of heater (23), body of heater (23) bottom is provided with furnace bottom bellows (19), the interior furnace bottom bellows of body of heater (23) top is provided with distribution plate (20), distribution plate top body of heater (23) lower disposed has two row's burners (4), between two row's burners (4), body of heater (23) is provided with fluidized furnace filling tube (21), and body of heater (23) top sidewall is provided with fluidized furnace discharge port (22); Body of heater (23) is rectangle or circle.
3. a kind of active lime production plant according to claim 2, is characterized in that described burner (4) decoration form is the double layout in relative both sides or annular double layout; The double layout in described relative both sides, the fluidized furnace (3) that body of heater (23) is rectangle, the relative both sides burner (4) that is arranged in parallel, every side is arranged two rows, the upper and lower staggered arrangement in position of upper row's burner (4) and lower row's burner (4), burner (4) position of both sides is staggered front to back layout relatively; Double being arranged as around body of heater (23) of annular, the two rows burner (4) that is circular layout, the upper and lower staggered arrangement in position of upper row's burner (4) and lower row's burner (4).
4. a kind of active lime production plant according to claim 2, is characterized in that described burner (4) fuel is geseous fuel, liquid fuel or solid fuel.
5. a kind of active lime production plant according to claim 4, is characterized in that described burner (4) fuel is geseous fuel.
6. a kind of active lime production plant according to claim 2, it is characterized in that described feeding device comprises chapelet (1), raw material cabin (2) and chute (18), described chapelet (1) discharge port below is provided with raw material cabin (2), raw material cabin (2) below is provided with star-shaped ash unloading valve, the star-shaped ash unloading valve below is provided with chute (18), and chute (18) outlet communicates with fluidized furnace filling tube (21);
Separation and residual heat using device comprise the first tornado dust collector (5), the second tornado dust collector (8), sack cleaner (13), cooling room (6), cooling blower (7), booster fan (10), interchanger (12), primary air fan (11), a wind pipeline of preheating (17), the first finished bin (9), the second finished bin (16), induced draft fan (14) and chimney (15), described the first tornado dust collector (5) opening for feed communicates with fluidized furnace discharge port (22), the first tornado dust collector (5) below discharge port and cooling room (6) feeding inlet, cooling room (6) blast inlet communicates with cooling blower (7) air outlet, cooling room (6) discharge port and the second tornado dust collector (8) feeding inlet, the second tornado dust collector (8) below discharge port communicates with the first finished bin (9), the second tornado dust collector (8) top air outlet communicates with booster fan (10) blast inlet, and booster fan (10) air outlet communicates with fluidized furnace (3) furnace bottom bellows (19), the high-temperature flue gas outlet of the first tornado dust collector (5) top communicates with interchanger (12) inlet mouth, interchanger (12) air outlet and sack cleaner (13) feeding inlet, the below discharge port of interchanger (12) and sack cleaner (13) communicates by pipeline, and pipe outlet communicates with the second finished bin (16), interchanger (12) blast inlet communicates with primary air fan (11) air outlet, and interchanger (12) air outlet communicates with chute (18) and burner (4) respectively by a wind pipeline of preheating (17), sack cleaner (13) air outlet communicates with induced draft fan (14) import, and induced draft fan (14) outlet communicates with chimney (15) by smoke discharging pipe.
7. according to the described a kind of active lime production plant of claim 2 or 6, it is characterized in that described fluidized furnace (3), the first tornado dust collector (5), the second tornado dust collector (8), sack cleaner (13), a wind pipeline of preheating (17), chute (18) and cooling room (6) outside are provided with lagging material; Described fluidized furnace (3), the first tornado dust collector (5) and cooling room (6) inside are provided with high temperature material.
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| CN201310318687.9A CN103435276B (en) | 2013-07-26 | 2013-07-26 | Production apparatus of active lime |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365571A (en) * | 2016-08-31 | 2017-02-01 | 博广热能股份有限公司 | Limestone slag and limestone powder molding method |
| CN106380091A (en) * | 2016-08-31 | 2017-02-08 | 博广热能股份有限公司 | Method for calcining active lime |
| CN107270709A (en) * | 2017-06-14 | 2017-10-20 | 株洲冶炼集团股份有限公司 | A kind of multiple hearth furnace |
| CN107473608A (en) * | 2017-09-30 | 2017-12-15 | 徐州金盟新型建材有限公司 | A kind of active lime producing process |
| CN107673637A (en) * | 2017-12-01 | 2018-02-09 | 河南中蓝新材料科技有限公司 | The suspension roasting device and its production technology of a kind of powdery active lime |
| CN107759115A (en) * | 2017-12-12 | 2018-03-06 | 泰安中意重型工业设备有限公司 | The new process for calcining and device of a kind of powdered lime |
| CN109160749A (en) * | 2018-11-09 | 2019-01-08 | 余松涛 | Circulation fine grained lime shaft kiln and its method for calcinating in a kind of |
| CN110563349A (en) * | 2019-10-15 | 2019-12-13 | 厦门大学 | Two-way shell calcining device |
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| WO2011058693A1 (en) * | 2009-11-16 | 2011-05-19 | 三菱マテリアル株式会社 | Mixing/calcining furnace |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365571A (en) * | 2016-08-31 | 2017-02-01 | 博广热能股份有限公司 | Limestone slag and limestone powder molding method |
| CN106380091A (en) * | 2016-08-31 | 2017-02-08 | 博广热能股份有限公司 | Method for calcining active lime |
| CN107270709A (en) * | 2017-06-14 | 2017-10-20 | 株洲冶炼集团股份有限公司 | A kind of multiple hearth furnace |
| CN107473608A (en) * | 2017-09-30 | 2017-12-15 | 徐州金盟新型建材有限公司 | A kind of active lime producing process |
| CN107673637A (en) * | 2017-12-01 | 2018-02-09 | 河南中蓝新材料科技有限公司 | The suspension roasting device and its production technology of a kind of powdery active lime |
| CN107759115A (en) * | 2017-12-12 | 2018-03-06 | 泰安中意重型工业设备有限公司 | The new process for calcining and device of a kind of powdered lime |
| CN109160749A (en) * | 2018-11-09 | 2019-01-08 | 余松涛 | Circulation fine grained lime shaft kiln and its method for calcinating in a kind of |
| CN109160749B (en) * | 2018-11-09 | 2021-06-15 | 余松涛 | Internal circulation fine particle lime shaft kiln and calcining method thereof |
| CN110563349A (en) * | 2019-10-15 | 2019-12-13 | 厦门大学 | Two-way shell calcining device |
| CN110563349B (en) * | 2019-10-15 | 2020-10-02 | 厦门大学 | Two-way shell calcining device |
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Address after: 056000 No. 2 Century Avenue, Handan Economic Development Zone, Hebei Applicant after: Xinxing Hebei Engineering Technology Co., Ltd. Address before: 056107 No. 99, harmony street, Handan Economic Development Zone, Hebei Applicant before: Xinxing Hebei Engineering Technology Co., Ltd. |
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