CN217757280U - Environment-friendly lime production system - Google Patents
Environment-friendly lime production system Download PDFInfo
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- CN217757280U CN217757280U CN202220593831.4U CN202220593831U CN217757280U CN 217757280 U CN217757280 U CN 217757280U CN 202220593831 U CN202220593831 U CN 202220593831U CN 217757280 U CN217757280 U CN 217757280U
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Abstract
The utility model relates to the technical field of lime production equipment, and discloses an environment-friendly lime production system, which comprises a winch, a lime kiln, a tail gas dust removal component and a tail gas desulfurization component, wherein the winch conveys a mixture of limestone and coal briquettes to the top of the lime kiln, lime is discharged from the bottom of the lime kiln, the tail gas dust removal component is connected with a smoke exhaust pipeline at the top of the lime kiln, the tail gas dust removal component is connected with the tail gas desulfurization component through a pipeline, the tail gas desulfurization component comprises a desulfurization tower and a circulating water tank, and the circulating water tank is connected with the desulfurization tower through an acid-resistant water pump; the lime kiln is characterized by further comprising a high-level water tank, the high-level water tank is flush with the top of the lime kiln in height, a circulating pipeline is connected to the high-level water tank, a heat exchanger is arranged between the circulating pipeline and the smoke exhaust pipeline, and a circulating pump is arranged on the circulating pipeline. The utility model discloses can improve the tail gas cleanup effect and the waste heat utilization effect of limekiln, energy-concerving and environment-protective.
Description
Technical Field
The utility model relates to a lime production facility technical field especially relates to an environment-friendly lime production system.
Background
In recent years, lime consumption has increased at a rate of 20% per year, and there are increasing types of downstream customer industries that require the use of lime. At present, the supply of lime in China is tense, but the yield of lime in China is not correspondingly increased, so that a large number of lime kilns are built in various places.
However, most of lime kiln production lines are simple in structure at present, and smoke in the lime production process is often discharged after direct dust removal, so that the utilization rate of waste heat generated by coal combustion in the lime production process is low. Meanwhile, the waste heat and the dust in the lime burning process are mixed and discharged in the flue gas, the flue gas needs to remove dust from the dust in the flue gas by using the dust removal component in the discharging process, the waste heat in the flue gas often causes the temperature of the dust removal component to rise, the service life of the dust removal component in a discharging pipeline is reduced, the dust removal effect in the flue gas discharging process is gradually reduced, and a large amount of dust and dust generated in the production process can pollute the working environment and the natural environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an environment-friendly lime production system has solved current limekiln and can not last high efficiency processing to the dust in the tail gas, to the not good problem of waste heat utilization effect in the tail gas, has reached energy-concerving and environment-protective effect.
In order to realize the aim, the utility model provides an environment-friendly lime production system, including hoist engine, lime kiln, tail gas dust removal subassembly and tail gas desulfurization subassembly, the hoist engine is carried into lime stone, the coal cinder mixture to the top of lime kiln, lime is discharged from the bottom of lime kiln, tail gas dust removal subassembly is connected with the exhaust pipe at lime kiln top, tail gas dust removal subassembly passes through the pipeline and is connected with the tail gas desulfurization subassembly, the tail gas desulfurization subassembly includes the desulfurizing tower, the circulating water pond passes through acid-resistant water pump and is connected with the desulfurizing tower;
the lime kiln is characterized by further comprising a high-level water tank, the high-level water tank is flush with the top of the lime kiln in height, a circulating pipeline is connected to the high-level water tank, a heat exchanger is arranged between the circulating pipeline and the smoke exhaust pipeline, and a circulating pump is arranged on the circulating pipeline.
As the preferred scheme, the heat exchanger includes heat transfer chamber and a plurality of heat exchange tubes, and the heat exchange tube is located the inside of heat transfer chamber, and the both ends of a plurality of heat exchange tubes are equipped with the attach fitting that converges the pipeline, and attach fitting connects on the circulating line, and the both ends in heat transfer chamber are connected on the exhaust pipe.
Preferably, the high-level water tank is arranged at the top of the lime kiln or is independently installed through a bracket.
As the preferred scheme, the side wall of the lime kiln is sequentially provided with a shell, a red brick layer and a heat-insulating brick layer from outside to inside, a coal ash layer is arranged between the shell and the red brick layer, and a heat-insulating cotton layer is arranged between the coal ash layer and the red brick layer.
As the preferred scheme, four discharge openings are uniformly formed in the bottom of the lime kiln, a discharge assembly is arranged on each discharge opening, the top and the bottom of the lime kiln are both in a necking shape, and the inner side wall of the lime kiln is in an arc shape.
As a preferred scheme, a distributing machine is arranged at the top of the lime kiln.
Preferably, the distributing machine is a rotary distributing device.
As a preferred scheme, the lime kiln temperature detection device further comprises a controller, the bottom of the lime kiln is connected with a blower, a plurality of thermocouple tubes used for detecting temperature are arranged in the lime kiln at different heights, and the blower and the thermocouple tubes are respectively and electrically connected with the controller.
Preferably, the tail gas dust removal assembly comprises a cyclone dust collector, a pulse bag type dust collector and an induced draft fan which are sequentially connected with one another through a pipeline from the top of the lime kiln, and the induced draft fan is electrically connected with the controller.
Preferably, the circulating water tank is connected with an alkali liquor tank through a pipeline.
The utility model provides an environment-friendly lime production system, including the hoist engine, the lime kiln, tail gas dust removal subassembly and tail gas desulfurization subassembly, the hoist engine, the production process of lime is accomplished in lime kiln mutually supported, the hoist engine is to the top of lime kiln input limestone, the coal cinder mixture, the coal cinder burns in the lime kiln and calcines limestone and produces lime, the lime of output is discharged from the bottom of lime kiln, tail gas dust removal subassembly is connected with the exhaust pipe at lime kiln top, flue gas in the exhaust pipe carries out the dust removal through tail gas dust removal subassembly, tail gas dust removal subassembly is connected with tail gas desulfurization subassembly through the pipeline, tail gas desulfurization subassembly carries out the desulfurization to the tail gas after the dust removal, tail gas desulfurization subassembly includes the desulfurizing tower, the circulating water pond is connected with the desulfurizing tower through acid-resistant water pump, the circulating water pond is supplied with rivers through acid-resistant water pump and is desulfurized to tail gas, purify; the lime kiln comprises a lime kiln body, a high-level water tank, a circulating pipeline, a heat exchanger, a circulating pump and a heat exchanger, wherein the high-level water tank is flush with the top of the lime kiln body in height, the circulating pipeline is connected to the high-level water tank, water flow in the high-level water tank can conveniently and smoothly and directly enter the circulating pipeline, the heat exchanger is arranged between the circulating pipeline and a smoke exhaust pipeline, heat in smoke is further collected by the heat exchanger, the heat in the smoke is metered into the water flow in the high-level water tank, a water source in the high-level water tank is driven to circulate by the circulating pump arranged on the circulating pipeline, energy consumption of the water flow in the high-level water tank during heat absorption is reduced, and the environment-friendly effect of the lime production system is improved; simultaneously, the heat in the flue gas is absorbed the back through the heat exchanger for tail gas dust removal subassembly, tail gas desulfurization subassembly receive the heat influence of flue gas at the during operation to reduce, have avoided tail gas dust removal subassembly, tail gas desulfurization subassembly to receive the influence of temperature and reduce life, have improved this environment-friendly lime production system's life.
Drawings
Fig. 1 is a schematic structural diagram of an environment-friendly lime production system in an embodiment of the present invention;
fig. 2 is a schematic sectional structure diagram of a heat exchanger in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a cross section of a lime kiln in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a lime kiln bottom in an embodiment of the present invention;
fig. 5 is a schematic diagram of a control structure in an embodiment of the present invention;
in the figure, 100, a winch; 200. a lime kiln; 201. a discharge opening; 202. a housing; 203. A red brick layer; 204. a heat insulating brick layer; 205. a coal ash layer; 206. a heat insulation cotton layer; 210. a smoke exhaust duct; 220. a material distributor; 230. a blower; 240. a thermocouple tube; 300. a tail gas dust removal assembly; 310. a cyclone dust collector; 320. a pulse bag type dust collector; 330. an induced draft fan; 400. A tail gas desulfurization assembly; 410. a desulfurizing tower; 420. a circulating water tank; 430. an acid-resistant water pump; 440. An alkali liquor tank; 500. a high-level water tank; 510. a circulation pipe; 520. a heat exchanger; 530. a circulation pump; 540. a support; 600. and a controller.
Detailed Description
Referring to the drawings, wherein like reference numbers refer to like elements, the principles of the present application are illustrated as being implemented in a suitable computing environment. The following description is based on illustrated embodiments of the application and should not be taken as limiting the application with respect to other embodiments that are not detailed herein.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Example 1
As shown in fig. 1 to 5, the environment-friendly lime production system according to the preferred embodiment of the present invention utilizes the waste heat in the flue gas at the top of the lime kiln, thereby reducing the energy loss caused by the flow of the heat transfer medium and improving the absorption and utilization effects of the waste heat in the flue gas; simultaneously, after absorbing the heat in the flue gas, the heat in the flue gas is absorbed through the heat exchanger for tail gas dust removal subassembly, tail gas desulfurization subassembly receive the thermal influence that flue gas tail gas carried and reduce, have improved this environment-friendly lime production system's life.
Based on the above technical scheme, the embodiment provides an environment-friendly lime production system, including hoist 100, lime kiln 200, tail gas dust removal component 300 and tail gas desulfurization component 400, hoist 100 uses the slope hoist among the prior art, and hoist 100 is to the top transport of lime kiln 200 limestone, coal cinder mixture, before hoist 100 promotes limestone, coal cinder mixture, weigh limestone, coal cinder through the subassembly of weighing, mix according to certain proportion to improve the lime quality that limestone, coal cinder mixture produced.
Specifically, the lime is calcined in the lime kiln 200, gradually moving from the top of the lime kiln 200 downward, and is discharged from the bottom of the lime kiln 200 after the lime is fired.
Specifically, the tail gas dust removal assembly 300 is connected with the smoke exhaust duct 210 at the top of the lime kiln 200, and the smoke exhaust duct 210 at the top of the lime kiln 200 can guide and discharge the smoke in the lime kiln 200 for subsequent treatment of the smoke.
In the existing lime kiln 200 with a better structure, the temperature of the flue gas discharged from the top of the lime kiln 200 is still higher. For example, in a daily 200T calcium oxide production line of Heng Mao kiln engineering Co., ltd, the temperature of the top of a lime kiln is controlled to be 100-150 ℃, so that the heat carried in the flue gas discharged by the kiln is still high. Thus, the heat in the flue gas exiting the top of the lime kiln 200 can be further utilized.
Specifically, tail gas dust removal subassembly 300 clears up the dust in to tail gas and collects, and tail gas dust removal subassembly 300 passes through the pipeline to be connected with tail gas desulfurization subassembly 400, and tail gas desulfurization subassembly 400 is used for carrying out the desulfurization to tail gas.
Specifically, the tail gas desulfurization module 400 employs direct contact absorption desulfurization. The tail gas desulfurization assembly 400 comprises a desulfurization tower 410 and a circulating water tank 420, wherein the desulfurization tower 410 is a spray-type desulfurization tower, and the circulating water tank 420 can provide a water source for the desulfurization tower 410 to be used for spray desulfurization of the desulfurization tower 410.
Specifically, the circulating water tank 420 is connected to the desulfurization tower 410 through the acid-proof water pump 430, and the acid-proof water pump 430 operates to drive water flow to circulate in the desulfurization tower 410 and the circulating water tank 420, so as to desulfurize the tail gas.
Specifically, the system further comprises a waste heat utilization assembly for absorbing heat in the top exhaust flue gas of the lime kiln 200. The waste heat utilization assembly specifically comprises a high-level water tank 500, and a water source for absorbing waste heat is contained in the high-level water tank 500.
Wherein, the head tank 500 sets up to the high parallel and level with the top height of lime kiln 200, has eliminated the difference in height that rivers in the head tank 500 reach the top of lime kiln 200 for rivers in the head tank 500 conveniently carry out heat exchange with the flue gas of the top exhaust of lime kiln 200, reduce the energy consumption of the water source motion to the top of lime kiln 200 in the head tank 500.
Specifically, a circulation pipeline 510 is connected to the high-level water tank 500, a heat exchanger 520 is arranged between the circulation pipeline 510 and the smoke exhaust pipeline 210, a circulation pump 530 is arranged on the circulation pipeline 510, and the circulation pump 530 drives water to circulate between the high-level water tank 500 and the heat exchanger 520.
Preferably, as shown in fig. 2, the heat exchanger 520 is made of metal, the heat exchanger 520 includes a heat exchange cavity 521 and a plurality of heat exchange tubes 522, the heat exchange tubes 522 are disposed inside the heat exchange cavity 521, two ends of the plurality of heat exchange tubes 522 are provided with connecting joints 523 for collecting tubes, and the connecting joints 523 can intensively convey water to the plurality of heat exchange tubes 522.
Specifically, the connection joint 523 is connected to the circulation duct 510, and both ends of the heat exchange chamber 521 are connected to the smoke discharge duct 210. When the heat exchanger 520 is installed and used, flue gas flows through the heat exchanger 520 from the heat exchange cavity 521, the heat exchange tube 522 is arranged in the heat exchange cavity 521, and water flow in the heat exchange tube 522 absorbs heat in flue gas tail gas, so that the heat is gradually transferred to water flow in the high-level water tank 500.
In some embodiments, the flow of water in the head tank 500 after absorbing heat can be drained out of the head tank 500 through a drain line for other uses, and the flow of water in the head tank 500 can be supplemented through a water inlet pipe connected to the head tank 500.
Preferably, the header tank 500 is disposed at the top of the lime kiln 200, and when the header tank 500 is disposed at the top of the lime kiln 200 through a bolt connection, the header tank 500 can absorb heat at the top of the lime kiln 200, but increases the overall weight of the lime kiln 200.
Optionally, when the high-level water tank 500 is separately installed through the bracket 540, the high-level water tank 500 is conveniently and fixedly installed, and construction is facilitated.
Preferably, the side wall of the lime kiln 200 is sequentially provided with a shell 202, a red brick layer 203 and a heat preservation brick layer 204 from outside to inside, the shell 202 is made of a steel plate, and the red brick layer 203 and the heat preservation brick layer 204 are used for preserving heat of the lime kiln 200, so that the lime calcination effect is improved.
Specifically, a coal ash layer 205 is arranged between the shell 202 and the red brick layer 203, a heat insulation cotton layer 206 is arranged between the coal ash layer 205 and the red brick layer 203, and the heat insulation cotton layer 206 can package the coal ash layer 205 to avoid leakage of the coal ash layer 205; the coal ash layer 205 can improve the heat insulation effect of the red brick layer 203 and the heat insulation brick layer 204 on the lime kiln 200.
Preferably, the circulating water tank 420 is connected with an alkali liquor tank 440 through a pipeline, the alkali liquor tank 440 is used for providing alkali liquor for the circulating water tank 420, and the alkali liquor can neutralize acidic sulfur-containing substances in flue gas when the desulfurizing tower 410 is used for desulfurizing, so that the desulfurizing effect is improved.
Example 2
The structure of this embodiment is substantially the same as that of embodiment 1, except that the bottom of the lime kiln 200 is uniformly provided with four discharge ports 201, each discharge port 201 is provided with a discharge assembly, and the discharge assembly can be a bar valve through which lime is discharged.
Wherein for lime can be followed discharge opening 201 respectively and is located the bottom discharge from lime kiln 200, through the lime volume from each discharge opening 201 discharge lime kiln 200, can adjust the balance degree of lime burning process in lime kiln 200, can improve the effect of burning of lime kiln 200 to lime.
Specifically, the top and the bottom of the lime kiln 200 are both in a necking shape, and the inner side wall of the lime kiln 200 is in an arc shape, so that the material for burning lime can not collide with the inner side wall of the lime kiln 200 when falling from the top of the lime kiln 200, and the service life of the lime kiln 200 can be prolonged.
Preferably, the top of the lime kiln 200 is provided with a distributing machine 220, the distributing machine 220 can improve the uniformity of material feeding at the top of the lime kiln 200, and the distributing machine 220 sends the mixture of limestone and coal blocks conveyed by the winch 100 into the lime kiln 200 to improve the firing effect of lime.
The distributor 220 is also called a distributor, which is a distribution device for distributing raw materials and solid fuels on the cross section of the shaft kiln according to requirements, and is also called a shaft kiln distributor. The distributor is one of the key devices in the production of the shaft kiln.
Preferably, the distributor 220 is a rotary distributor. The rotary distributor disclosed in patent CN202988991U (application number: CN 201220646552.6) can be specifically adopted.
Example 3
The present embodiment has substantially the same structure as embodiment 1, except that the present embodiment further comprises a controller 600, the bottom of the lime kiln 200 is connected with a blower 230, a plurality of thermocouple tubes 240 for detecting temperature are arranged at different heights in the lime kiln 200, and the blower 230 and the thermocouple tubes 240 are electrically connected with the controller 600 respectively.
Specifically, the blower 230 is capable of blowing the lime kiln 200 to provide sufficient air required for lime firing in the lime kiln 200.
Specifically, the thermocouple tube 240 can measure the temperature in the lime kiln 200, and when the calcination temperature in the lime kiln 200 does not conform to the preset value, the controller 600 can control the working state of the blower 230, so as to adjust the airflow rate in the lime kiln 200, thereby improving the control effect of calcining lime in the lime kiln 200.
Preferably, the tail gas dust removal assembly 300 comprises a cyclone dust collector 310, a pulse bag type dust collector 320 and an induced draft fan 330 which are sequentially connected through a pipeline at the top of the lime kiln 200, wherein the cyclone dust collector 310 primarily removes large-particle dust from the tail gas of the flue gas, and the pulse bag type dust collector 320 further removes dust with smaller particles from the tail gas.
Wherein, draught fan 330 can remove dust for tail gas dust removal subassembly 300 and provide power, and draught fan 330 is connected with controller 600 electricity, is convenient for carry out accurate control to draught fan 330.
The use of the terms "a" and "an" and "1" and similar referents in the context of describing the concepts of the application (especially in the context of the following claims) are to be construed to cover both the singular and the plural. Moreover, unless otherwise indicated herein, recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. In addition, the steps of all methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The variations of the present application are not limited to the described order of the steps. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the concepts of the application and does not pose a limitation on the scope of the concepts of the application unless otherwise claimed. Various modifications and adaptations will be apparent to those skilled in the art without departing from the spirit and scope.
The electronic device control method, apparatus, storage medium, and electronic device provided in the embodiments of the present application are described in detail above, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The environment-friendly lime production system is characterized by comprising a winch (100), a lime kiln (200), a tail gas dust removal assembly (300) and a tail gas desulfurization assembly (400), wherein the winch (100) conveys a mixture of limestone and coal briquettes to the top of the lime kiln (200), lime is discharged from the bottom of the lime kiln (200), the tail gas dust removal assembly (300) is connected with a smoke exhaust pipeline (210) at the top of the lime kiln (200), the tail gas dust removal assembly (300) is connected with the tail gas desulfurization assembly (400) through a pipeline, the tail gas desulfurization assembly (400) comprises a desulfurization tower (410) and a circulating water tank (420), and the circulating water tank (420) is connected with the desulfurization tower (410) through an acid-resistant water pump (430);
still include high-order water tank (500), high-order water tank (500) and the high parallel and level in top of lime kiln (200), be connected with circulating line (510) on high-order water tank (500), be equipped with heat exchanger (520) between circulating line (510) and smoke exhaust pipe (210), be equipped with circulating pump (530) on circulating line (510).
2. The environment-friendly lime production system according to claim 1, wherein the heat exchanger (520) comprises a heat exchange chamber (521) and a plurality of heat exchange pipes (522), the heat exchange pipes (522) are arranged inside the heat exchange chamber (521), the two ends of the plurality of heat exchange pipes (522) are provided with connecting joints (523) for collecting pipes, the connecting joints (523) are connected to the circulation pipe (510), and the two ends of the heat exchange chamber (521) are connected to the smoke exhaust pipe (210).
3. The environment-friendly lime production system according to claim 1, wherein the head tank (500) is installed at the top of the lime kiln (200) or separately installed through a bracket (540).
4. An environment-friendly lime production system according to claim 3, wherein the side wall of the lime kiln (200) is provided with a casing (202), a red brick layer (203) and an insulating brick layer (204) in sequence from outside to inside, a coal ash layer (205) is arranged between the casing (202) and the red brick layer (203), and an insulating cotton layer (206) is arranged between the coal ash layer (205) and the red brick layer (203).
5. The environment-friendly lime production system according to claim 1, wherein four discharge ports (201) are uniformly formed at the bottom of the lime kiln (200), a discharge assembly is provided on each discharge port (201), the top and bottom of the lime kiln (200) are each in a reduced shape, and the inner side wall of the lime kiln (200) is in an arc shape.
6. An environment friendly lime production system according to claim 5 wherein the top of the lime kiln (200) is provided with a spreader (220).
7. The environment-friendly lime production system as claimed in claim 6, wherein the distributing machine (220) is a rotary distributor.
8. The environment-friendly lime production system according to claim 1, further comprising a controller (600), wherein the bottom of the lime kiln (200) is connected with a blower (230), a plurality of thermocouple tubes (240) for detecting temperature are arranged at different heights in the lime kiln (200), and the blower (230), the thermocouple tubes (240) and the controller (600) are respectively and electrically connected.
9. The environment-friendly lime production system according to claim 8, wherein the tail gas dust removal assembly (300) comprises a cyclone (310), a pulse bag type dust collector (320) and an induced draft fan (330) which are sequentially connected from the top of the lime kiln (200) through a pipeline, and the induced draft fan (330) is electrically connected with the controller (600).
10. The environment-friendly lime production system according to claim 1, wherein the circulating water tank (420) is connected to the lye tank (440) through a pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220593831.4U CN217757280U (en) | 2022-03-17 | 2022-03-17 | Environment-friendly lime production system |
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| CN202220593831.4U CN217757280U (en) | 2022-03-17 | 2022-03-17 | Environment-friendly lime production system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117361902A (en) * | 2023-12-05 | 2024-01-09 | 河北欧顺金科技有限公司 | Calcium oxide production device |
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2022
- 2022-03-17 CN CN202220593831.4U patent/CN217757280U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117361902A (en) * | 2023-12-05 | 2024-01-09 | 河北欧顺金科技有限公司 | Calcium oxide production device |
| CN117361902B (en) * | 2023-12-05 | 2024-02-13 | 河北欧顺金科技有限公司 | Calcium oxide production device |
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