CN203373276U - Active lime production device - Google Patents

Active lime production device Download PDF

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Publication number
CN203373276U
CN203373276U CN201320450546.8U CN201320450546U CN203373276U CN 203373276 U CN203373276 U CN 203373276U CN 201320450546 U CN201320450546 U CN 201320450546U CN 203373276 U CN203373276 U CN 203373276U
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China
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dust collector
burner
heater
tornado dust
communicates
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CN201320450546.8U
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Chinese (zh)
Inventor
闫炳宽
张雪咏
闫亚辉
李为良
张韬
高志强
赵彦兵
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Xinxing Hebei Engineering Technology Co Ltd
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Xinxing Hebei Engineering Technology Co Ltd
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Abstract

The utility model discloses an active lime production device, and relates to the technical field of active lime calcination. The active lime production device comprises a charging device, a calcination device and a separation and waste heat utilization device, wherein the calcination device is a fluidization furnace. The active lime production device can be used for saving resources, improving the utilization rate of the resources, directly calcining limestone with the particle size of less than 10mm and solving the problem of the wasting of limestone mine tailings and has the characteristics of simple working procedure, low cost, high product quality, low investment, and simple operation maintenance, saves energy sources, and is environment-friendly and clean.

Description

A kind of active lime production plant
Technical field
The utility model 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.
The utility model content
The technical problems to be solved in the utility model 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, technical solution adopted in the utility model 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.
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 utility model 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.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;
Fig. 1 is structural representation of the present utility model;
Fig. 2 is fluidized furnace structural representation of the present utility model;
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 decoration forms are the double layouts in relative both sides, see Fig. 3 and Fig. 4.The relative double layout in both sides, the fluidized furnace 3 that body of heater 23 be 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 positions of relative both sides are staggered front to back layout.Body of heater 23 medullary rays of take are image line, and a side has burner 4 places, and opposite side does not have.This kind of layout can make the interior temperature of fluidized furnace 3, smoke distribution more even, and the calcining of Wingdale raw material, suspension effect are good.
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 decoration forms are annular double layout, see Fig. 5 and Fig. 6.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.The double layout of annular mainly is applicable to the type of furnace that the body of heater sectional dimension is larger.When cross section is larger, the double layout burner 4 in both sides has been not enough to meet the temperature requirement in fluidized furnace 3 relatively, so must could meet by annular double layout burner 4.
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 (5)

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, 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.
5. according to the described a kind of active lime production plant of claim 2 or 4, 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.
CN201320450546.8U 2013-07-26 2013-07-26 Active lime production device Withdrawn - After Issue CN203373276U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103435276A (en) * 2013-07-26 2013-12-11 新兴河北工程技术有限公司 Production apparatus of active lime
CN104649596A (en) * 2014-12-18 2015-05-27 杨连明 Method for preparing high-activity lime by calcining limestone chips with circulating fluidized bed

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103435276A (en) * 2013-07-26 2013-12-11 新兴河北工程技术有限公司 Production apparatus of active lime
CN104649596A (en) * 2014-12-18 2015-05-27 杨连明 Method for preparing high-activity lime by calcining limestone chips with circulating fluidized bed

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Address after: 056000 No. 2 Century Avenue, Handan Economic Development Zone, Hebei

Patentee after: Xinxing Hebei Engineering Technology Co., Ltd.

Address before: 056107 No. 99, harmony street, Handan Economic Development Zone, Hebei

Patentee before: Xinxing Hebei Engineering Technology Co., Ltd.

AV01 Patent right actively abandoned

Granted publication date: 20140101

Effective date of abandoning: 20150325

RGAV Abandon patent right to avoid regrant