CN111003950A - Beam kiln for producing lime - Google Patents

Beam kiln for producing lime Download PDF

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Publication number
CN111003950A
CN111003950A CN202010072644.7A CN202010072644A CN111003950A CN 111003950 A CN111003950 A CN 111003950A CN 202010072644 A CN202010072644 A CN 202010072644A CN 111003950 A CN111003950 A CN 111003950A
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CN
China
Prior art keywords
auxiliary beam
kiln
combustion
auxiliary
air
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Pending
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CN202010072644.7A
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Chinese (zh)
Inventor
贾鹏
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Shanghai Covapor Energy Technology Co ltd
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Shanghai Covapor Energy Technology Co ltd
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Application filed by Shanghai Covapor Energy Technology Co ltd filed Critical Shanghai Covapor Energy Technology Co ltd
Priority to CN202010072644.7A priority Critical patent/CN111003950A/en
Publication of CN111003950A publication Critical patent/CN111003950A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00Lime, magnesia or dolomite
    • C04B2/10Preheating, burning calcining or cooling

Abstract

The invention relates to a beam kiln for producing lime, which comprises a kiln body, an air supply system, a waste gas discharge system and a control system. The upper part of the kiln body is provided with a feed inlet, and the lower part of the kiln body is provided with a discharge outlet. The preheating zone in the kiln body is provided with an upper suction beam and a denitration beam, the cooling zone is provided with a lower suction beam, the calcining zone is provided with a combustion beam, an upper auxiliary beam, a middle auxiliary beam and a lower auxiliary beam, and the combustion beam, the upper auxiliary beam, the middle auxiliary beam and the lower auxiliary beam are sequentially installed from top to bottom. One end of the burning beam is provided with an injection air gun which is inserted into the box body of the burning beam. One end of the upper auxiliary beam and one end of the middle auxiliary beam are provided with a high-pressure air inlet, the other end of the upper auxiliary beam and the middle auxiliary beam are provided with a high-pressure air outlet, the high-pressure air inlet is connected with an air supply system, and the high-pressure air outlet is connected to an inlet of the injection air gun. According to the beam type lime production shaft kiln, the burning beam and the auxiliary beam structure are arranged in the kiln body, and the upper and lower air suction beams are arranged in a matched mode, so that the air inlet amount of the beam type lime shaft kiln can be reduced, and the emission of waste gas is reduced.

Description

Beam kiln for producing lime
Technical Field
The invention belongs to the technical field of chemical building material production equipment, and relates to a beam kiln for producing lime.
Background
The beam lime kiln is a common technology for lime production, has the advantages of low energy consumption, good quality of lime products, strong production capacity, large operation elasticity and the like, and is widely applied to the lime production for metallurgy, chemical engineering and other purposes. The burning beam is the core equipment of the beam type lime kiln, and the limestone is calcined through the burning beam. In general, calcination requires combustion of fuel in a calcination zone, which gives off heat to heat the material being calcined. The decomposition temperature of the limestone is about 900 ℃, and the calcining temperature is generally 1000-1200 ℃. To reach the calcination temperature, a fuel with a certain calorific value is required to produce qualified lime. The beam lime kiln is mostly a gas-fired lime kiln, and natural gas, liquefied petroleum gas, coke oven gas, blast furnace gas, calcium carbide furnace gas and the like are used as fuels. Due to the limitation of fuel resources and environmental protection, gas-fired lime kilns cannot be used in some places to produce lime.
The flue gas is the main discharge of the lime kiln and is mixed gas generated by burning combustible materials in a kiln chamber and decomposing limestone. Since the flue gas contains a large amount of nitrogen oxides NOx such as NO, which, if discharged directly into the atmosphere, pollute the air, form photochemical smog and acid rain, and are harmful to human health, the flue gas must be subjected to denitrification (i.e., denitration) before being discharged.
The burning beam in the existing beam type lime kiln is limited by the process if solid fuel is used for calcining lime, the calcining effect is not ideal enough, and the quality requirement of the lime kiln smoke emission can not be fully met.
Disclosure of Invention
The utility model aims at providing a beam kiln of production lime uses solid fuel to calcine, and the lime is calcined in the limited area of adaptation gas fuel, improves the denitration effect, satisfies energy-concerving and environment-protective requirement, especially is fit for rebuilding on current lime kiln basis, and the construction investment is saved to the current resource of make full use of, reduces the nitrogen oxide content of lime kiln exhaust gas, increases enterprise economic benefits.
The application provides a beam kiln for producing lime, which comprises a kiln body, a feeding system, a combustion system, a discharging system, an air supply system, a waste gas discharging system and a control system, wherein a feeding hole is formed in the upper part of the kiln body, and a discharging hole is formed in the lower part of the kiln body; the kiln body comprises a preheating zone, a calcining zone and a cooling zone, wherein at least one upper suction beam is arranged at the upper part of the preheating zone, at least one lower suction beam is arranged at the upper part of the cooling zone, and the upper suction beam is connected with an exhaust gas discharge system through an exhaust gas outlet; the preheating zone is provided with at least one denitration beam, the calcining zone is provided with at least one layer of combustion beam, and each layer is provided with at least one combustion beam; at least one auxiliary beam is arranged below each combustion beam; the top of the combustion beam is provided with a coal injection nozzle, and an air channel is arranged around the coal injection nozzle; one end of the combustion beam is provided with an injection air gun which is inserted into the box body of the combustion beam; one end of the upper auxiliary beam and one end of the middle auxiliary beam are provided with a high-pressure air inlet, the other end of the upper auxiliary beam and the middle auxiliary beam are provided with a high-pressure air outlet, the high-pressure air inlet is connected with an air supply system, and the high-pressure air outlet is connected to an injection air gun inlet; the lower suction beam is connected to the case of the combustion beam through a circulation passage.
Further, the auxiliary beam comprises an upper auxiliary beam, a middle auxiliary beam and a lower auxiliary beam; the lower part of the combustion beam is provided with a lower auxiliary beam, or an upper auxiliary beam and a lower auxiliary beam are sequentially arranged; or an upper auxiliary beam, a middle auxiliary beam and a lower auxiliary beam are sequentially arranged; the combustion beam and the lower suction beam are arranged in parallel and longitudinally in equal quantity, and the lower suction beam supports the lower auxiliary beam through refractory bricks. Or part or all of the lower auxiliary beam is built by solid refractory bricks without openings, or part or all of the lower auxiliary beam is built by refractory bricks with few openings.
Further, the beam bodies of the upper auxiliary beam, the middle auxiliary beam and the lower auxiliary beam are of a steel structure or a refractory material structure or a mixed structure of steel and a refractory material; when the beam body is of a steel structure, the inside or/and the outside of the beam body is/are lined with refractory materials, and the lower auxiliary beam is provided with a smoke port; when the beam body of the lower auxiliary beam is of a refractory material structure, the refractory material is a refractory checker brick.
Further, heat conduction oil pipes are arranged in the beam bodies of the combustion beam, the lower suction beam, the upper auxiliary beam and the middle auxiliary beam of the steel structure, the heat conduction oil pipes are connected with a heat conduction oil circulation system, and the heat conduction oil circulation system comprises a connecting pipeline, a heat conduction oil circulation pump and a heat conduction oil heat exchanger.
Furthermore, the heat conducting oil pipes of the upper auxiliary beam and the middle auxiliary beam are completely or partially replaced by structural cooling air channels; the high-pressure fan is connected to the heat-conducting oil heat exchanger through the heat exchanger, an outlet of the heat-conducting oil heat exchanger is connected to the structural cooling air channels of the upper auxiliary beam and the middle auxiliary beam through air inlets respectively, and outlets of the structural cooling air channels of the upper auxiliary beam and the middle auxiliary beam are connected to the jet air guns of the combustion beam through connecting pipes.
Further, the waste gas discharge system comprises a heat exchanger, a dust remover, an induced draft fan and a chimney, and a waste gas outlet of the upper suction beam is connected to the chimney through the heat exchanger, the dust remover and the induced draft fan; the air supply system comprises a high-pressure fan, a heat exchanger and a heat-conducting oil heat exchanger, wherein the high-pressure fan is connected to a high-pressure air inlet formed in one end of the auxiliary beam and one end of the middle auxiliary beam through the heat exchanger and the heat-conducting oil heat exchanger.
Further, the denitration beam is of a cylindrical structure or a box-shaped structure, and denitration agent injection holes are formed in the two sides and the bottom of the denitration beam; the denitration roof beam is connected with denitration preparation unit, denitration preparation unit includes liquid ammonia storage tank, liquid ammonia evaporator, ammonia buffer tank and liquid ammonia pump, the liquid ammonia storage tank is connected to liquid ammonia evaporator through the liquid ammonia pump, and the ammonia liquid evaporator is connected to ammonia wind blender through the ammonia buffer tank, and ammonia wind blender is connected to the denitration roof beam. Alternatively, a denitration agent other than liquid ammonia is stored in the liquid ammonia storage tank.
Further, the beam body of the combustion beam includes, but is not limited to, a "T" beam structure or a rectangular structure; the fuel of the beam kiln is solid fuel, liquid fuel or gas fuel, or the combination of the above fuels.
Further, the beam bodies of the upper, middle and lower auxiliary beams include, but are not limited to, a concave body structure with a downward recess, the concave body structure being provided with a circulation channel, and the lower suction beam being connected to the combustion beam through the circulation channel; the periphery of the circulation channel is provided with a steel material including but not limited to a pipeline for the circulation of heat transfer oil or other structures, and the material of the circulation channel includes but not limited to a refractory material or a steel structure.
Furthermore, the upper auxiliary beam, the middle auxiliary beam and the lower auxiliary beam are provided with rib plates for supporting the beam body; and a support column is arranged at the lower part of the lower suction beam.
The invention provides a beam kiln for producing lime, which is characterized in that a burning beam and an auxiliary beam structure are arranged in a kiln body, and an upper air suction beam and a lower air suction beam are arranged in a matching manner, so that the air intake of the beam lime shaft kiln can be reduced, the emission of waste gas is reduced, in addition, because the denitration beam is arranged, the waste gas generated by calcining lime can be subjected to denitration treatment before the waste gas is discharged out of the lime kiln, and the environmental protection performance of the lime kiln is improved.
The beam kiln for producing lime can use solid fuel, returns high-temperature flue gas to a combustion space by adopting an injection principle, improves the combustion efficiency of the solid fuel, enlarges the fuel application range of the beam lime kiln, and is beneficial to reducing the content of nitrogen oxide in the flue gas and protecting the environment. The invention is particularly suitable for reconstruction of the existing lime kiln, fully utilizes the existing resources, saves construction investment and increases the economic benefit of enterprises.
Drawings
FIG. 1 is a schematic structural view of a beam kiln for producing lime according to the present invention;
FIG. 2 is a view A-A of FIG. 1;
FIG. 3 is a view B-B of FIG. 1;
FIG. 4 is a detailed view of the calcining zone and cooling zone of FIG. 1;
FIG. 5 is a left side view of FIG. 1;
fig. 6 is a right side view of fig. 1.
Wherein: 1-kiln body, 2-upper suction beam, 3-denitration beam, 4-feed inlet, 5-waste gas outlet, 6-heat exchanger, 7-dust remover, 8-draught fan, 9-chimney, 10-high pressure blower, 11-jet air gun, 12-combustion beam, 16-lower suction beam, 17-discharge outlet, 19-circulation channel, 20-coal nozzle, 21-heat conduction oil pipe, 24-structure cooling air channel, 25-air channel, 26-box, 27-air inlet, 28-connecting pipe, 37-upper auxiliary beam, 38-middle auxiliary beam, 39-lower auxiliary beam, 40-support column, 41-fire-resistant checker brick, 42-rib plate, 43-heat conduction oil heat exchanger, 44-rib plate.
Detailed Description
The present invention will be described in detail with reference to the following examples and drawings. The scope of protection of the invention is not limited to the embodiments, and any modification made by those skilled in the art within the scope defined by the claims also falls within the scope of protection of the invention.
The beam kiln for producing lime is shown in figure 1, and comprises a kiln body 1, a feeding system, a combustion system, a discharging system, an air supply system, an exhaust gas discharge system and a control system, wherein the upper part of the kiln body is provided with a feeding hole 4, and the lower part of the kiln body is provided with a discharging hole 17. The kiln body comprises a preheating zone, a calcining zone and a cooling zone, wherein the upper part of the preheating zone is provided with two upper suction beams 2 and 3 denitration beams 3, the upper part of the cooling zone is provided with 3 lower suction beams 16, and the upper suction beams are connected with a waste gas discharge system through a waste gas outlet 5. The waste gas discharge system comprises a heat exchanger 6, a dust remover 7, an induced draft fan 8 and a chimney 9, and a waste gas outlet of the upper suction beam 2 is connected to the chimney 9 through a shell pass of the heat exchanger 6, the dust remover 7 and the induced draft fan 8. Figure 4 is a detailed view of the calcining zone and cooling zone of the beam kiln of figure 1. Fig. 5 is a left side view of fig. 1, and fig. 6 is a right side view of fig. 1.
As shown in fig. 3, the calcining zone is provided with 3 sets of burner beams 12, upper auxiliary beams 37, middle auxiliary beams 38 and lower auxiliary beams 39. As shown in fig. 2, the burner beam 12, the upper auxiliary beam 37, the middle auxiliary beam 38 and the lower auxiliary beam 39 are installed in this order from the top to the bottom, and are installed on the lower suction beam 16 through refractory bricks 44. The top of the combustion beam 12 is provided with a coal injection nozzle 20, around which an air passage 25 is provided. The combustion beam 12, the upper auxiliary beam 37, the middle auxiliary beam 38 and the lower auxiliary beam 39 are arranged in a matching manner, and the combustion beam 12 and the lower suction beam 16 are arranged longitudinally and flush. One end of the burning beam 12 is provided with an injection air gun 11, and the injection air gun 11 is inserted into a box body 26 of the burning beam 12. The combustion beams 12 on both sides are inserted into the injection air guns 11 from the right end, and the combustion beam in the middle is inserted into the injection air guns 11 from the left end. One end of the upper auxiliary beam 37 and the middle auxiliary beam 38 is provided with a high-pressure air inlet, and the other end is provided with a high-pressure air outlet. The air supply system comprises a high-pressure fan 10, a heat exchanger 6 and a heat-conducting oil heat exchanger 43, wherein the high-pressure fan 10 is connected to a tube side inlet of the heat exchanger 6, a tube side outlet of the heat exchanger 6 is connected to the high-pressure air inlet through the heat-conducting oil heat exchanger 43, and high-pressure air outlets of an upper auxiliary beam 37 and a middle auxiliary beam 38 are connected to an injection air gun 11. The lower suction beam 16 is connected to the casing 26 of the combustion beam 12 through the circulation channel 19.
The upper auxiliary beam 37, the middle auxiliary beam 38 and the lower auxiliary beam 39 are of a refractory structure, and the height of the upper auxiliary beam 37 and the middle auxiliary beam 38 is 2 meters. The refractory material of the lower auxiliary beam 39 is a refractory checker brick 41, and the refractory checker brick 41 has a single-hole structure. As shown in fig. 2, heat conduction oil pipes 21 are provided in the beam bodies of the combustion beam 12 and the lower suction beam 16, and the heat conduction oil pipes 21 are connected to a heat conduction oil circulation system including a connection pipe, a heat conduction oil circulation pump, and a heat conduction oil heat exchanger 43. The upper auxiliary beam 37 and the middle auxiliary beam 38 are provided with structural cooling air channels 24, the high pressure fan 10 is connected to a heat conduction oil heat exchanger 43 through a heat exchanger 6, the outlet of the heat conduction oil heat exchanger 43 is connected to the structural cooling air channels 24 of the upper auxiliary beam 37 and the middle auxiliary beam 38 through an air inlet 27, respectively, and the outlets of the structural cooling air channels 24 of the upper auxiliary beam 37 and the middle auxiliary beam 38 are connected to the injection air guns 11 of the combustion beam through connecting pipes 28.
Denitration roof beam 3 is cylinder type structure or box body type structure, and the both sides and the bottom of denitration roof beam are equipped with the denitration agent jet orifice. Denitration roof beam 3 is connected with denitration preparation unit, and denitration preparation unit includes liquid ammonia storage tank, liquid ammonia evaporator, ammonia buffer tank and liquid ammonia pump, the liquid ammonia storage tank is connected to liquid ammonia evaporator through the liquid ammonia pump, and the ammonia liquid evaporator is connected to ammonia wind blender through the ammonia buffer tank, and ammonia wind blender is connected to the denitration roof beam. The body of the beam 12 is of rectangular configuration. The fuel of the beam kiln is solid fuel. The beam bodies of the upper auxiliary beam 37, the middle auxiliary beam 38 and the lower auxiliary beam 39 are of a concave body structure with a downward recess, the high pressure wind outlet side of the concave body structure is provided with a circulation passage 19, and the lower suction beam 16 is connected to the beam body 26 of the combustion beam 12 through the circulation passage 19. The circulation channel 19 is surrounded by a steel material including, but not limited to, a pipe or other structure through which the heat transfer oil flows, and the material of the circulation channel includes, but not limited to, a refractory material or a steel structure. As shown in fig. 2 and 3, the upper auxiliary beam 37, the middle auxiliary beam 38 and the lower auxiliary beam 39 are provided with internal cavities, and rib plates 42 are arranged in the internal cavities, and the rib plates 42 are positioned between two adjacent coal injection nozzles and used for supporting the beam body. The lower part of the lower suction beam 6 is provided with 3 support columns 40 which are located at the bottom of the kiln and are used for supporting the lower suction beam.
The beam kiln for producing lime provided by the invention has the following operation process: limestone materials enter the kiln body 1 through the feed inlet 4, are preheated by the preheating zone and then enter the calcining zone for calcining. The coal powder output by the coal powder bin is conveyed to the coal injection nozzle 20 of the combustion beam 12 through a fuel conveying system, enters the inner cavities of the upper auxiliary beam 37, the middle auxiliary beam 38 and the lower auxiliary beam 39 together with combustion-supporting air in sequence, is combusted, high-temperature flue gas after combustion enters the material layer from the open holes of the refractory lattice bricks 41 of the lower auxiliary beam 39 under the suction action of the upper suction beam 2, returns to a preheating zone to preheat fresh materials, is mixed with a denitrifier sprayed from a denitrifier spraying hole of the denitrifier removing beam 3, is denitrated in a selective non-catalytic reduction (SNCR) mode in the material layer at the temperature of 850-. After the high-pressure air blown out by the high-pressure fan exchanges heat through the heat exchanger 6 and the heat conduction oil heat exchanger 43, the high-pressure air enters the structural cooling air channel 24 of the upper auxiliary beam 37 and the middle auxiliary beam 38 through the air inlet 27, the outlet of the structural cooling air channel 24 serves as ejection air through the connecting pipe 28 and the ejection air gun 11, and the ejection air and the ejected air from the circulating channel 19 serve as combustion-supporting air to enter the box body 26 of the combustion beam 12. After cooling lime in the cooling zone, cooling air entering the kiln body from the bottom enters the lower suction beam 16 under the injection action of the injection air gun 11 and enters the box 26 of the combustion beam 12 as injected air through the circulating channel 19. The combustion-supporting air entering the beam body 26 of the combustion beam 12 is sprayed into the calcining zone through the air channel 25 around the coal spraying nozzle 20 to carry out combustion-supporting combustion, and limestone materials are calcined. The calcined lime enters the cooling zone downwards and is cooled by introducing cooling air into the cooling zone through a cooling fan, and the cooled lime is discharged out of the lime kiln through a discharge hole 17. As shown in fig. 3, the right side air injection lances 11 of the two side combustion beams 12 inject high pressure air, and the left side air injection lance 11 of the middle combustion beam injects high pressure air.

Claims (10)

1. A beam kiln for producing lime comprises a kiln body (1), a feeding system, a combustion system, a discharging system, an air supply system, a waste gas discharge system and a control system, wherein the upper part of the kiln body is provided with a feeding hole (4), and the lower part of the kiln body is provided with a discharging hole (17); the kiln body comprises a preheating zone, a calcining zone and a cooling zone, wherein the upper part of the preheating zone is provided with at least one upper suction beam (2), the upper part of the cooling zone is provided with at least one lower suction beam (16), and the upper suction beam is connected with an exhaust gas discharge system through an exhaust gas outlet (5); the method is characterized in that: the preheating zone is provided with at least one denitration beam (3), the calcining zone is provided with at least one layer of combustion beam (12), and each layer is provided with at least one combustion beam; at least 1 auxiliary beam is arranged below each combustion beam; a coal injection nozzle (20) is arranged at the top of the combustion beam (12), and an air channel (25) is arranged around the coal injection nozzle; one end of the combustion beam (12) is provided with an injection air gun (11), and the injection air gun (11) is inserted into a box body (26) of the combustion beam (12); one end of the upper auxiliary beam (37) and one end of the middle auxiliary beam (38) are provided with a high-pressure air inlet, the other end of the upper auxiliary beam is provided with a high-pressure air outlet, the high-pressure air inlet is connected with an air supply system, and the high-pressure air outlet is connected to an inlet of the injection air gun (11); the lower suction beam (16) is connected to the box (26) of the combustion beam (12) by means of a circulation channel (19).
2. A beam kiln for the production of lime according to claim 1, characterized in that: the auxiliary beam comprises an upper auxiliary beam (37), a middle auxiliary beam (38) and a lower auxiliary beam (39); a lower auxiliary beam (39) is arranged at the lower part of the combustion beam (12), or an upper auxiliary beam (37) and a lower auxiliary beam (39) are sequentially arranged; or an upper auxiliary beam (37), a middle auxiliary beam (38) and a lower auxiliary beam (39) are sequentially arranged; the combustion beam (12) and the lower suction beam (16) are arranged in parallel and longitudinally in equal quantity, and the lower suction beam (16) supports the lower auxiliary beam (39) through a refractory brick (44); or, part or all of the lower auxiliary beam (39) is built by solid refractory bricks without openings, or part or all of the lower auxiliary beam (39) is built by refractory bricks with few openings.
3. Beam kiln for the production of lime according to claim 1 or 2, characterized in that: the beam bodies of the upper auxiliary beam (37), the middle auxiliary beam (38) and the lower auxiliary beam (39) are steel structures or refractory structures or mixed structures of steel materials and refractory materials; when the beam body is of a steel structure, the inside or/and the outside of the beam body is/are lined with refractory materials, and the lower auxiliary beam (39) is provided with a smoke port; when the beam body of the lower auxiliary beam (39) is of a refractory material structure, the refractory material is refractory lattice bricks (41).
4. A beam kiln for the production of lime according to claim 3, wherein: the heat conduction oil pipe is characterized in that heat conduction oil pipes (21) are arranged in the beam bodies of the combustion beam (12), the lower suction beam (16), the upper auxiliary beam (37) and the middle auxiliary beam (38) of the steel structure, the heat conduction oil pipes (21) are connected with a heat conduction oil circulation system, and the heat conduction oil circulation system comprises a connecting pipeline, a heat conduction oil circulation pump and a heat conduction oil heat exchanger (43).
5. A beam kiln for the production of lime according to claim 4, wherein: the heat conducting oil pipes (21) of the upper auxiliary beam (37) and the middle auxiliary beam (38) are partially or completely replaced by structural cooling air channels (24); the high-pressure fan (10) is connected to a heat-conducting oil heat exchanger (43) through a heat exchanger (6), an outlet of the heat-conducting oil heat exchanger (43) is connected to a structure cooling air channel (24) of an upper auxiliary beam (37) and a middle auxiliary beam (38) through an air inlet (27), and outlets of the structure cooling air channels (24) of the upper auxiliary beam (37) and the middle auxiliary beam (38) are connected to a jet air gun (11) of a combustion beam through a connecting pipe (28).
6. A beam kiln for the production of lime according to claim 3, wherein: the waste gas discharge system comprises a heat exchanger (6), a dust remover (7), an induced draft fan (8) and a chimney (9), and a waste gas outlet of the upper suction beam (2) is connected to the chimney (9) through the heat exchanger (6), the dust remover (7) and the induced draft fan (8); the air supply system comprises a high-pressure fan (10), a heat exchanger (6) and a heat-conducting oil heat exchanger (43), wherein the high-pressure fan (10) is connected to a high-pressure air inlet formed in one end of an auxiliary beam (37) and one end of a middle auxiliary beam (38) through the heat exchanger (6) and the heat-conducting oil heat exchanger (43).
7. A beam kiln for the production of lime according to claim 1, characterized in that: the denitration beam (3) is of a cylindrical structure or a box-shaped structure, and denitration agent injection holes are formed in the two sides and the bottom of the denitration beam; the denitration beam (3) is connected with the denitration preparation unit, the denitration preparation unit comprises a liquid ammonia storage tank, a liquid ammonia evaporator, an ammonia buffer tank and a liquid ammonia pump, the liquid ammonia storage tank is connected to the liquid ammonia evaporator through the liquid ammonia pump, the ammonia liquid evaporator is connected to an ammonia-air mixer through the ammonia buffer tank, and the ammonia-air mixer is connected to the denitration beam; alternatively, a denitration agent other than liquid ammonia is stored in the liquid ammonia storage tank.
8. A beam kiln for the production of lime according to claim 1, characterized in that: the beam body of the combustion beam (12) includes, but is not limited to, a "T" beam structure or a rectangular structure; the fuel of the beam kiln is solid fuel, liquid fuel or gas fuel, or the combination of the above fuels.
9. A beam kiln for the production of lime according to claim 1, characterized in that: the beam bodies of the upper auxiliary beam (37), the middle auxiliary beam (38) and the lower auxiliary beam (39) include, but are not limited to, concave body structures with downward notches, the concave body structures are provided with circulation channels (19), and the lower suction beam (16) is connected to the combustion beam (12) through the circulation channels (19); and steel materials including but not limited to pipelines or other structures for circulating the heat conduction oil are arranged around the circulating channel (19), and the material of the circulating channel includes but not limited to refractory materials or steel structures.
10. A beam kiln for the production of lime according to claim 1, characterized in that: the upper auxiliary beam (37), the middle auxiliary beam (38) and the lower auxiliary beam (39) are provided with rib plates (42) for supporting the beam body; and a support column (40) is arranged at the lower part of the lower suction beam (16).
CN202010072644.7A 2020-01-21 2020-01-21 Beam kiln for producing lime Pending CN111003950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010072644.7A CN111003950A (en) 2020-01-21 2020-01-21 Beam kiln for producing lime

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Application Number Priority Date Filing Date Title
CN202010072644.7A CN111003950A (en) 2020-01-21 2020-01-21 Beam kiln for producing lime

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Publication Number Publication Date
CN111003950A true CN111003950A (en) 2020-04-14

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CN202010072644.7A Pending CN111003950A (en) 2020-01-21 2020-01-21 Beam kiln for producing lime

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1669708A2 (en) * 2004-12-13 2006-06-14 Terruzzi Fercalx S.p.A. Kiln for burning lump materials
CN201258298Y (en) * 2008-07-25 2009-06-17 贾会平 Kiln for burning lime
CN101863627A (en) * 2010-07-13 2010-10-20 贾会平 Double-beam lime kiln
CN202063836U (en) * 2011-05-30 2011-12-07 石家庄市新华工业炉有限公司 Beam type lime kiln
CN202482229U (en) * 2012-03-19 2012-10-10 石家庄市新华工业炉有限公司 Compound combustion beam for limekiln
CN102951859A (en) * 2012-10-24 2013-03-06 石家庄新华能源环保科技股份有限公司 Heat accumulating type lime kiln
CN213037672U (en) * 2020-01-21 2021-04-23 上海柯来浦能源科技有限公司 Beam kiln for producing lime

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1669708A2 (en) * 2004-12-13 2006-06-14 Terruzzi Fercalx S.p.A. Kiln for burning lump materials
CN201258298Y (en) * 2008-07-25 2009-06-17 贾会平 Kiln for burning lime
CN101863627A (en) * 2010-07-13 2010-10-20 贾会平 Double-beam lime kiln
CN202063836U (en) * 2011-05-30 2011-12-07 石家庄市新华工业炉有限公司 Beam type lime kiln
CN202482229U (en) * 2012-03-19 2012-10-10 石家庄市新华工业炉有限公司 Compound combustion beam for limekiln
CN102951859A (en) * 2012-10-24 2013-03-06 石家庄新华能源环保科技股份有限公司 Heat accumulating type lime kiln
CN213037672U (en) * 2020-01-21 2021-04-23 上海柯来浦能源科技有限公司 Beam kiln for producing lime

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