CN203478938U - Rotary kiln apparatus with energy recovery equipment - Google Patents
Rotary kiln apparatus with energy recovery equipment Download PDFInfo
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- CN203478938U CN203478938U CN201320321057.2U CN201320321057U CN203478938U CN 203478938 U CN203478938 U CN 203478938U CN 201320321057 U CN201320321057 U CN 201320321057U CN 203478938 U CN203478938 U CN 203478938U
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- energy recovery
- rotary kiln
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- kiln
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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
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Abstract
The utility model relates to a rotary kiln apparatus with energy recovery equipment. The rotary kiln apparatus comprises two rotary kilns, a cooler, one or two heat accumulators, a charging system, a discharging system, a blower, a cooling blower and an exhaust discharging system. The rotary kiln apparatus is provided with the energy recovery equipment enclosed by a steel plate or a coil pipe on the external part of the rotary kilns; the energy recovery equipment is in a fixed structure; two ends of the energy recovery equipment are respectively provided with a slide sealing piece; the energy recovery equipment is rotationally sealed with the rotary kilns via the slide sealing pieces; the heat accumulator is in a sleeve structure and comprises an external sleeve and an internal sleeve; annular space is formed between the external and the internal sleeves; the lower part of the annular space is connected with the rotary kilns via kiln heads; the heat accumulator is provided with two to 10 pushers; and each pusher is provided with a pushing plate. Heat emitted from the outer wall of the rotary kilns is recovered by the energy recovery equipment to preheat fuel gas; decomposed gas produced by smog and material decomposition is used to preheat to-be-processed material and air, so a burning temperature is increased and waste heat is fully utilized; and energy consumption and production cost are reduced, thereby achieving improved economic benefit.
Description
Technical field
The utility model belongs to industrial furnace technical field, relates to a kind of rotary kiln, is specifically related to a kind of rotary kiln device with apparatus for energy recovery.
Background technology
Rotary kiln refers to rotary calcining kiln, and wherein lime rotary kiln is to use the kiln of calcining more widely small particles material, is applicable to being applied to the manufacturing enterprises such as iron and steel, calcium carbide chemical industry, non-ferrous metal.Lime rotary kiln can dinectly bruning 10-40mm fine fraction raw material limestone or light dolomite, there is the features such as adaptability to raw material is good, output is large, product is even, activity degree is high, production operation is stable.Lime rotary kiln is simple in structure, and air-flow is unobstructed, and sulfur-containing smoke gas can be discharged in time, and the sulphur in fuel is difficult for adhering to, thereby calcining finished product sulfur content is low, and purity is high, meets the quality requirement of finished product.Both along the circumferential direction rollings of material simultaneously, move again vertically, are heated evenly, and burner easy control of temperature, burning quality is good, more than Product Activity Du Keda 360mL.
But because lime rotary kiln energy consumption is large, seriously restrict popularization and the development of lime rotary kiln.Application number is that 200920227150.0 Chinese invention patent discloses a kind of " calcination system of energy-saving rotary kiln ", and in this patent, " calcined by rotary kiln system comprises rotary kiln, and fuel gas enters from rotary kiln low side, brings out from rotary kiln is high; Raw material enters from rotary kiln is high-end, brings out from rotary kiln is low, it is characterized in that: the high-end Yu Yi of the rotary kiln heat recovery chamber ，Gai heat recovery chamber inside that communicates is provided with the feeding preheating pipe communicating with rotary kiln, and raw material enters rotary kiln after the preheating of feeding preheating pipe.So design, raw material, before entering rotary kiln, is dried and heats up.”。But by economizer bank preheating material, recover energy limited in this patent, using energy source also has larger space, this device can not reclaim the heat of rotary kiln outer wall loss simultaneously, compare with other kiln types, it is great that rotary kiln wall energy loss accounts for the ratio of total power consumption, in addition the rotary kiln of this patent is single rotary kiln, is unfavorable for expanding production capacity.
Summary of the invention
The purpose of this utility model is to provide a kind of rotary kiln device with apparatus for energy recovery, utilize apparatus for energy recovery and storage heater to combine, make full use of waste heat preheating material to be machined and air that flue gas and material decompose the decomposition gas producing, rotary kiln outer wall liberated heat pre-heating fuel, thereby reduction energy consumption, increases economic efficiency.
The utility model, with the rotary kiln device of apparatus for energy recovery, comprises two rotary kilns, cooler, one or two storage heaters, feeding system, discharge system, air blast, cooling blower and exhaust emission systems.Rotary kiln is provided with kiln hood, and kiln hood is provided with burner.Two rotary kilns are connected with cooler by kiln hood, and cooler is connected with discharge system, and cooling blower is connected with cooler.The top material mouthful of storage heater is connected with feeding system by inlet valve.The gas port of storage heater is connected with exhaust emission system with air blast respectively by triple valve.Rotary kiln device is provided with apparatus for energy recovery, and apparatus for energy recovery is formed in rotary kiln outer peripheral system by steel plate or coil pipe.Apparatus for energy recovery is fixed structure, and two is provided with sliding seal, and apparatus for energy recovery is by sliding seal and rotary kiln rotary seal.Storage heater is telescoping structure, comprises urceolus and inner core, is annular space between urceolus and inner core, and the bottom of annular space is connected with rotary kiln by kiln hood.Storage heater is provided with 2～10 pushers, and pusher is with scraping wings.
The apparatus for energy recovery being formed by the coil pipe system of enclosing is provided with gas entry and gas exit, and gas entry is connected with gaspipe line, and gas exit is connected with burner.Apparatus for energy recovery inside is provided with flow-disturbing blower fan.
Rotary kiln device with apparatus for energy recovery is provided with heat exchanger and circulating fan, and heat exchanger is provided with air pipe line and gaspipe line, and the apparatus for energy recovery being formed by the steel plate system of enclosing is provided with air intake and air outlet slit.Air outlet slit is connected to the air pipe line entrance of heat exchanger, and the outlet of heat exchanger air pipe line is connected to circulating fan entrance, and circulating fan outlet is connected to the air intake of apparatus for energy recovery.Heat exchanger coal pipeline entrance is connected with cooled coal gas pipeline, and outlet is connected with burner.Heat exchanger is shell-and-tube heat exchanger or coil exchanger.Storage heater is provided with dividing plate, and dividing plate is divided into two parts by storage heater, and two rotary kilns share a storage heater.One of rotary kiln is connected with cooler by kiln hood, and other end is connected with storage heater by kiln hood, and two rotary kilns share a storage heater.
The inner core top of storage heater is cone structure, and centre is cylindrical structure.Two rotary kilns are symmetrically arranged or asymmetric arrangement, lay respectively at the both sides of kiln hood.
Rotary kiln device with apparatus for energy recovery is used for calcined limestone, dolomite.Apparatus for energy recovery also can be applied on common rotary kiln, the shaft preheater lime rotary kiln that the predecomposition rotary kiln ，Huo Lime Factory using as cement plant uses.Rotary kiln both can be used for lime burning, also can be used for producing clinker, as being used for, produce clinker, the raw material of ball processed is added by shaft preheater top, powder sprays into by being arranged on the powder spout of kiln hood, the grog burning till goes out device after subcooler is cooling, and rotary kiln can also be used for producing the multiple uses such as reduced iron.Rotary kiln energy recycle device also can be applied on common rotary kiln, the shaft preheater lime rotary kiln that the predecomposition rotary kiln ，Huo Lime Factory using as cement plant uses.
The utility model is with the rotary kiln device of apparatus for energy recovery, by the outer setting apparatus for energy recovery at rotary kiln, and the heat pre-heating fuel gas of outer wall bulk storage while utilizing apparatus for energy recovery to reclaim rotary kiln running; Pass through storage heater, utilize flue gas and the material that calcination process produces to decompose the decomposition gas preheating material to be machined producing, material to be machined preheated air after recycling pre-heating temperature elevation, thereby improved ignition temperature, take full advantage of the waste heat of calcined by rotary kiln material process, reduce energy consumption and lime production cost, improved economic benefit.Storage heater adopts sleeve parallel type structure, and heat-transfer effect is good, is conducive to the even preheating of material to be machined.
Accompanying drawing explanation
Fig. 1 is that the utility model is with the structural representation of the rotary kiln device of apparatus for energy recovery;
Fig. 2 is the structural representation of another embodiment of the utility model.
Wherein: 1-triple valve, 2-feeding system, 3-inlet valve, 4-storage heater, 5-pusher, 6-scraping wings, 7-kiln hood, 8-burner, 9-air blast, 10-flow-disturbing blower fan, 11-coil pipe, 12-rotary kiln, 13-kiln hood, 14-sliding seal, 15-gas exit, 16-gas entry, 17-cooling blower, 18-cooler, 19-discharge system, 20-valve, 21-apparatus for energy recovery outer wall, 22-air outlet slit, 23-air intake, 24-circulating fan, 25-heat exchanger, 26-inner core, 27-annular space, 28-apparatus for energy recovery.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is elaborated.
Embodiment 1
The utility model is with the rotary kiln device of apparatus for energy recovery, as shown in Figure 1, comprise two rotary kilns 12, cooler 18, two storage heaters 4, feeding system 2, discharge system 19, air blast 9, cooling blower 17, apparatus for energy recovery 28 and exhaust emission systems.Rotary kiln is provided with kiln hood 7, and kiln hood is provided with burner 8.Two rotary kilns are connected with cooler by kiln hood 13, are symmetrically arranged or asymmetric arrangement, lay respectively at the both sides of kiln hood.Cooler is connected with discharge system, and cooling blower is connected with cooler.The top material mouthful of storage heater is connected with feeding system by inlet valve 3, and the top gas port of storage heater is connected with exhaust emission system with air blast 9 respectively by triple valve 1.Apparatus for energy recovery is formed in rotary kiln outer peripheral system by coil pipe 11, and inside is provided with flow-disturbing blower fan 10.Apparatus for energy recovery is fixed structure, and two is provided with sliding seal 14, and apparatus for energy recovery is by sliding seal and rotary kiln rotary seal.Storage heater is telescoping structure, comprises urceolus and inner core 26, is annular space 27 between urceolus and inner core, and the bottom of annular space is connected with rotary kiln by kiln hood.Inner core top is cone structure, and centre is cylindrical structure.Storage heater is provided with 6 pushers 5, and pusher is with scraping wings 6.Apparatus for energy recovery is provided with gas entry 16 and gas exit 15, and gas entry is connected with gaspipe line, and gas exit is connected with burner 8, and connecting line is provided with valve 20.
The utility model with the running of the rotary kiln device of apparatus for energy recovery is, lime stone raw material enters storage heater 4 through left side feeding system 2, and the cone by inner core 26 tops is evenly distributed on annular space 27.The flue gas of being come by rotary kiln 12 enters the annular space of storage heater 4 through kiln hood 7, the raw material in storage heater is carried out to preheating.Lime stone raw material after preheating pushes kiln hood 7 by pusher 5, enters left side rotary kiln 12 calcine through kiln hood.Lime after calcining is through kiln hood 13 to cooler 18, and the cooling air of being sent by cooling blower 17 carries out cooling to the high temperature lime in cooler, and cooled lime goes out device through discharging opening and discharge system 19.The gas method of operation be the air that bloats of air blast 9 through triple valve 1 to right side storage heater, in storage heater, be preheated, heat is from the raw material after being preheated, and the cooled coal gas that cooled coal gas pipeline is come enters coil pipe through gas entry 16, and the coal gas after preheating enters burner through gas exit 15, valve 20.By flow-disturbing blower fan 10 strengthening apparatus for energy recovery 28 internal gas, flow, improve heat transfer efficiency.Coal gas after preheating and combustion air enter right side rotary kiln and burn after kiln hood mixes, limestone material in the rotary kiln of right side is calcined, flue gas and decomposition gas that burning produces mix with the gas of cooler cool lime through kiln hood together, mist is through left side rotary kiln, kiln hood and left side storage heater preheating limestone material accumulation of heat, the flue gas of emitting after heat enters into exhaust emission system through triple valve 1, and the temperature of fume emission is lower than 150 ℃.According to both sides fume emission design temperature, both sides rotary kiln hockets and calcines and preheating, the hocket accumulation of heat and emit heat preheated air of both sides storage heater, the action by triple valve, valve 20 and inlet valve 3 realizes alternate run, and the design temperature of fume emission is 150 ℃.
Embodiment 2
As shown in Figure 2, device is provided with heat exchanger 25 and circulating fan 24 to another embodiment of the utility model, and heat exchanger is coil exchanger, and heat exchanger is provided with air pipe line and fuel gas pipeline.Apparatus for energy recovery 28 is formed by the steel plate system of enclosing, and is provided with air intake 23 and air outlet slit 22.Air outlet slit is connected to the air pipe line entrance of heat exchanger, and the outlet of heat exchanger air pipe line is connected to circulating fan entrance, and circulating fan outlet is connected to the air intake of apparatus for energy recovery.Heat exchanger fuel gas pipeline entrance is connected with cooled coal gas pipeline, and outlet is connected with burner 8.By the combustion air after apparatus for energy recovery preheating, through air outlet slit 22 and heat exchanger air pipe line entrance, enter heat exchanger, by an air pipe line outlet minute two-way, translateral circulating fan 24, air intake 23 enter both sides rotary kiln apparatus for energy recovery respectively with cooled coal gas heat exchange.By circulating fan 24, realize air circulates between apparatus for energy recovery and heat exchanger.Cooled coal gas enters burner 8 burnings in the shell side preheating of heat exchanger by valve 20.Miscellaneous equipment and operation are identical with embodiment 1.
Claims (8)
1. the rotary kiln device with apparatus for energy recovery, comprise two rotary kilns (12), cooler (18), one or two storage heaters (4), feeding system (2), discharge system (19), air blast (9), cooling blower (17) and exhaust emission system, described rotary kiln is provided with kiln hood (7), and kiln hood is provided with burner (8); Two rotary kilns are connected with cooler by kiln hood (13), and cooler is connected with discharge system, and cooling blower is connected with cooler; The top material mouthful of described storage heater is connected with feeding system by inlet valve (3); The top gas port of described storage heater (4) is connected with exhaust emission system with air blast (9) respectively by triple valve (1), it is characterized in that: described rotary kiln device is provided with apparatus for energy recovery (28), described apparatus for energy recovery is formed in rotary kiln outer peripheral system by steel plate or coil pipe (11); Described apparatus for energy recovery is fixed structure, and two is provided with sliding seal (14), and apparatus for energy recovery is by sliding seal and rotary kiln rotary seal; Described storage heater is telescoping structure, comprises urceolus and inner core (26), is annular space (27) between urceolus and inner core, and the bottom of described annular space is connected with rotary kiln by kiln hood; Described storage heater is provided with 2～10 pushers (5), and pusher is with scraping wings (6).
2. the rotary kiln device with apparatus for energy recovery according to claim 1, it is characterized in that: the described apparatus for energy recovery (28) being formed by coil pipe (11) system of enclosing is provided with gas entry (16) and gas exit (15), gas entry is connected with gaspipe line, and gas exit is connected with burner (8).
3. the rotary kiln device with apparatus for energy recovery according to claim 2, is characterized in that: described apparatus for energy recovery (28) inside is provided with flow-disturbing blower fan (10).
4. the rotary kiln device with apparatus for energy recovery according to claim 1, is characterized in that: described device is provided with heat exchanger (25) and circulating fan (24), and described heat exchanger is provided with air pipe line and blast tube; The described apparatus for energy recovery (28) being formed by the steel plate system of enclosing is provided with air intake (23) and air outlet slit (22); Described air outlet slit is connected to the air pipe line entrance of heat exchanger, and the outlet of heat exchanger air pipe line is connected to circulating fan entrance, and circulating fan outlet is connected to air intake; Heat exchanger gaspipe line entrance is connected with cooled coal gas pipeline, and outlet is connected with burner (8).
5. the rotary kiln device with apparatus for energy recovery according to claim 4, is characterized in that: described heat exchanger (25) is shell-and-tube heat exchanger or coil exchanger.
6. the rotary kiln device with apparatus for energy recovery according to claim 1, is characterized in that: described storage heater (4) is provided with dividing plate, and dividing plate is divided into two parts by storage heater; One of described rotary kiln (12) is connected with cooler (18) by kiln hood (13), and other end is connected with storage heater by kiln hood (7).
7. according to the rotary kiln device with apparatus for energy recovery described in claim 1～6 any one, it is characterized in that: described inner core (26) top is cone structure, centre is cylindrical structure.
8. according to the rotary kiln device with apparatus for energy recovery described in claim 1～6 any one, it is characterized in that: described two rotary kilns (12) are symmetrically arranged or asymmetric arrangement, lay respectively at the both sides of kiln hood (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320321057.2U CN203478938U (en) | 2013-06-05 | 2013-06-05 | Rotary kiln apparatus with energy recovery equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320321057.2U CN203478938U (en) | 2013-06-05 | 2013-06-05 | Rotary kiln apparatus with energy recovery equipment |
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| Publication Number | Publication Date |
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| CN203478938U true CN203478938U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320321057.2U Expired - Lifetime CN203478938U (en) | 2013-06-05 | 2013-06-05 | Rotary kiln apparatus with energy recovery equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335514A (en) * | 2013-06-05 | 2013-10-02 | 石家庄新华能源环保科技股份有限公司 | Rotary kiln device provided with energy recovery equipment |
| CN104833203A (en) * | 2015-04-17 | 2015-08-12 | 石家庄新华能源环保科技股份有限公司 | Heat-accumulating-type cement calcination device |
| WO2016150100A1 (en) * | 2015-03-24 | 2016-09-29 | 石家庄新华能源环保科技股份有限公司 | Heat-accumulating lime rotary kiln |
| CN113137857A (en) * | 2021-04-15 | 2021-07-20 | 镇江新宇固体废物处置有限公司 | Novel rotary kiln using waste heat circulation to support combustion |
-
2013
- 2013-06-05 CN CN201320321057.2U patent/CN203478938U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335514A (en) * | 2013-06-05 | 2013-10-02 | 石家庄新华能源环保科技股份有限公司 | Rotary kiln device provided with energy recovery equipment |
| WO2016150100A1 (en) * | 2015-03-24 | 2016-09-29 | 石家庄新华能源环保科技股份有限公司 | Heat-accumulating lime rotary kiln |
| CN104833203A (en) * | 2015-04-17 | 2015-08-12 | 石家庄新华能源环保科技股份有限公司 | Heat-accumulating-type cement calcination device |
| CN113137857A (en) * | 2021-04-15 | 2021-07-20 | 镇江新宇固体废物处置有限公司 | Novel rotary kiln using waste heat circulation to support combustion |
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