CN210367457U - Sleeve kiln using natural gas as fuel - Google Patents

Sleeve kiln using natural gas as fuel Download PDF

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Publication number
CN210367457U
CN210367457U CN201920993560.XU CN201920993560U CN210367457U CN 210367457 U CN210367457 U CN 210367457U CN 201920993560 U CN201920993560 U CN 201920993560U CN 210367457 U CN210367457 U CN 210367457U
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China
Prior art keywords
cooling air
flue gas
inlet
gas
combustion chamber
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Expired - Fee Related
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CN201920993560.XU
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Chinese (zh)
Inventor
唐丹
张林进
黄黾
薛建军
满毅
庞焕军
沈浩
方琼
曹凌云
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SINOCALCI Technology Corp
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SINOCALCI Technology Corp
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Priority to CN201920993560.XU priority Critical patent/CN210367457U/en
Priority to PCT/CN2019/115501 priority patent/WO2020258636A1/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/02—Lime
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/10—Preheating, burning calcining or cooling
    • C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The utility model provides an use sleeve kiln of natural gas as fuel, including the kiln body, go up the inner skleeve, lower inner skleeve, go up combustion chamber and lower combustion chamber, the cooling air export is established to lower inner skleeve, go up the combustion chamber and establish the nozzle respectively with lower combustion chamber, the exhanst gas outlet is established on kiln body upper portion, the exhanst gas outlet is through the flue intercommunication of flue gas processing system and chimney, the outside of the kiln body is surrounded there is the cooling air ring canal, mix ring canal and distribution ring canal, cooling ring canal entry and cooling air export intercommunication, cooling ring canal export and mixed ring canal intercommunication, the flue intercommunication of mixed ring canal and chimney. The flue gas and the cooling air are mixed in the mixing ring pipe and then pass through the distribution ringThe pipe is distributed in each burner, the structure realizes the return of the flue gas and improves the CO in the flue gas2The mixed gas with low concentration and oxygen content replaces the original cooling air, more gas is added in the oxygen-deficient combustion process of the upper combustion chamber, and under the condition of the same air coefficient, the temperature of the upper combustion chamber is effectively reduced, and NO is reducedxAnd (4) generating.

Description

Sleeve kiln using natural gas as fuel
Technical Field
The utility model relates to a sleeve kiln especially relates to an use sleeve kiln of natural gas as fuel.
Background
The sleeve kiln usually adopts carbon-containing energy sources such as coal gas and coal as fuel, and the flue gas of the sleeve kiln contains a large amount of CO2，CO2The emission of the organic fertilizer can bring about the problems of greenhouse effect and the like, thereby causing wide attention of people. But CO in the flue gas2Recovery of CO2High cost, especially when CO is contained in flue gas2At lower concentrations, CO2The trapping is difficult and the recovery device needs to be large, further increasing CO2Difficulty of capture and cost of recovery. Wherein, the sleeve kiln using natural gas as fuel contains hydrogen in the natural gas, so that CO in the flue gas is generated2Relatively low, and further increases CO2Difficulty in trapping, and increased CO2The cost of recovery. Along with the improvement of environmental protection standards, pollutant emission standards are correspondingly improved, and the emission standards are further improved along with the environment protection situation. In addition, the recovered CO2The application is wide, such as the fields of alkali preparation, smelting, oil displacement, food and the like, and has certain economic value.
Therefore, the CO in the flue gas discharged by the sleeve kiln using natural gas as fuel is further improved2The concentration is favorable for CO2The collection and the reduction of the recovery cost and the brought economic, social and environmental benefits are importantIt has important meaning.
Chinese utility model patent CN208320222U discloses a lime kiln flue gas recirculation system, which comprises a sleeve kiln, a waste gas discharge system and a flue gas treatment device. The sleeve kiln is provided with a flue gas outlet and a recirculated flue gas inlet, the flue gas outlet is positioned at the upper part of the sleeve kiln, and the recirculated flue gas inlet is positioned at the recirculated flue gas inlet pipe at the lower part of the cooling belt. The above patent realizes flue gas recycling, and can improve CO in flue gas2And (4) concentration. But with a 500t sleeve kiln, a gas heat value of 1300kCal/Nm3For example, combustion air for fuel combustion mainly comes from lime cooling air, primary combustion air (inner sleeve cooling air) and driving air, wherein the lime cooling air is about 5000-7000 Nm3Per hour, about 2000-2500 Nm of primary combustion air3The driving wind is about 6000 to 7000Nm3The lime cooling air accounts for about 40 percent, the flue gas is completely used as the lime cooling air instead of air in the patent, and under the condition that the cooling air quantity (meeting the lime cooling requirement) is basically the same, the oxygen quantity entering the kiln is greatly reduced, so that the requirement of fuel combustion oxygen demand is difficult to meet. Meanwhile, the above patent needs to cool the flue gas to the ambient temperature to meet the requirement for cooling, and the equipment investment cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an use sleeve kiln of natural gas as fuel has optimized sleeve kiln's structure, has solved how to improve CO in sleeve kiln emission flue gas of natural gas as fuel2Concentration, thereby realizing efficient recycling of CO2To a problem of (a).
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is:
a sleeve kiln taking natural gas as fuel comprises a kiln body, an upper inner sleeve, a lower inner sleeve, an upper combustion chamber and a lower combustion chamber, wherein the lower inner sleeve is provided with a cooling air outlet, the upper combustion chamber and the lower combustion chamber are respectively provided with burners, the upper part of the kiln body is provided with a flue gas outlet, the flue gas outlet is communicated with a flue of a chimney through a flue gas treatment system, the outer side of the kiln body is respectively surrounded with a cooling air ring pipe, a mixing ring pipe and a distribution ring pipe, the cooling air ring pipe is provided with a plurality of first cooling air inlets corresponding to the cooling air outlets, the first cooling air inlets are communicated with the cooling air outlets in a one-to-one correspondence manner, and the cooling air ring pipe is provided with first cooling air outlets; the mixing ring pipe is provided with a first mixed gas inlet and a first mixed gas outlet, the first mixed gas inlet comprises a second cooling air inlet and a flue gas inlet which are arranged in close proximity, the second cooling air inlet is communicated with the first cooling air outlet, and the flue gas inlet is communicated with a flue of a chimney; a second mixed gas inlet is formed in the distribution ring pipe, and the first mixed gas outlet is communicated with the second mixed gas inlet; and the distribution ring pipe is also provided with a plurality of second mixed gas outlets corresponding to the burners, and the second mixed gas outlets are connected with the burners in a one-to-one correspondence manner.
The outer side of the sleeve kiln is additionally provided with a mixing ring pipe and a distribution ring pipe on the basis of the original cooling air ring pipe, thereby realizing the flue gas recirculation process and improving the CO in the flue gas2Concentration of CO and thus of CO2Trapping and reducing recovery costs. The mixing ring pipe is used for uniformly mixing the flue gas and the cooling air to form mixed gas with low oxygen content, the mixed gas is introduced into the distribution ring pipe through a pipeline, and the mixed gas is introduced into the burner through an outlet of the distribution ring pipe through a pipeline.
In addition, the mixed gas with low oxygen content replaces the original cooling air, and the upper combustion chamber reduces the oxygen content in the combustion process from the low-nitrogen combustion aspect, thereby being beneficial to moderating the heat release of combustion and inhibiting the generation of nitrogen oxides.
The upper combustion chamber is in oxygen deficiency combustion, the temperature of the combustion chamber must be strictly controlled for ensuring the working environment of refractory materials, when the air coefficient fed into the upper combustion chamber is 0.5, compared with the original process, when the same oxygen amount is fed, the fed mixed flue gas amount is increased, and then the temperature of the combustion chamber is reduced, otherwise, under the condition of ensuring the same temperature, more oxygen is fed, and then the burnout degree of the fuel of the sleeve kiln is improved.
Preferably, the center line of the first mixture inlet and the center line of the first mixture outlet are on the same straight line. Further ensuring that the cooling air and the flue gas are uniformly mixed in the mixing ring pipe.
Preferably, the first cooling air inlets are evenly arranged in the circumferential direction of the cooling air collar.
Preferably, said second mixture outlets are evenly arranged in the circumferential direction of said distribution collar.
The uniform circumferential distribution ensures the air flow in the sleeve kiln to be balanced.
Preferably, flue gas entry and gas circulation fan's export intercommunication, gas circulation fan's entry and chimney intercommunication, gas circulation fan's entry sets gradually flow orifice plate and butterfly valve, gas circulation fan's exit sets gradually pressure gauge, check valve and quick pneumatic trip valve.
The flue gas circulating fan introduces flue gas into the mixing ring pipe, the flow pore plate is used for monitoring the flow of the flue gas, and the pressure gauge monitors the pressure of the pipeline, so that the flow and the pressure of the flue gas are ensured to be suitable for the calcining process requirement of the sleeve kiln.
The utility model has the advantages that:
the utility model provides an use natural gas as sleeve kiln of fuel, the former cooling air ring canal that sets up in the outside of sleeve kiln, increase mixed ring canal and distribution ring canal now, flue gas recirculation technology has been realized, mixed ring canal is used for carrying out the homogeneous mixing with flue gas and cooling air and forms the lower gas mixture of oxygen content, introduce the gas mixture into the distribution ring canal, pass through the pipeline by the export of distribution ring canal again and introduce the nozzle, CO in the sleeve kiln flue gas has been improved2Concentration of CO convenient2Trapping and reducing recovery cost. In addition, the mixed gas with low oxygen content is used for replacing the original cooling air, so that the oxygen content in the combustion process is reduced from the low-nitrogen combustion perspective of the upper combustion chamber, the heat release during combustion is favorably alleviated, and the generation of nitrogen oxides is inhibited; the upper combustion chamber is used for oxygen-deficient combustion, the temperature of the combustion chamber needs to be strictly controlled in order to ensure the working environment of refractory materials, when the coefficient of air fed into the upper combustion chamber is 0.5, compared with the original process, the air mixture fed into the upper combustion chamber needs to be increased under the condition of feeding the same amount of oxygen, and further the temperature of the combustion chamber is reduced; under the condition of ensuring the same temperature, more oxygen needs to be fed, thereby improving the quality of the productBurnout of the muffle furnace fuel. The central line of the mixed gas inlet on the mixing ring pipe and the central line of the first mixed gas outlet are on the same straight line, so that the cooling air and the flue gas are uniformly mixed in the mixing ring pipe. The second mixed gas outlets are uniformly arranged along the circumferential direction of the distribution ring pipe, so that the air flow in the sleeve kiln is ensured to be balanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a middle sleeve kiln of the present invention;
FIG. 2 is a schematic view of the cooling air loop structure of the present invention;
FIG. 3 is a schematic structural view of a mixing collar of the present invention;
FIG. 4 is a schematic view of the structure of the distribution collar of the present invention;
FIG. 5 is a schematic view of the connection between the cooling air loop, the mixing loop and the distribution loop of the present invention;
FIG. 6 is a schematic structural view of a pipe between a flue gas inlet and a chimney according to the present invention;
in the figure: 1-a kiln body; 2-upper inner sleeve; 3-lower inner sleeve; 4-upper combustion chamber, 5-lower combustion chamber, 6-cooling air ring pipe and 7-mixing ring pipe; 8-distribution loop pipe; 9-a chimney; 10-a burner;
301-cooling air outlet;
601-a first cooling air inlet; 602 a first cooling air outlet;
701-a first mixture inlet; 702-a first mixture outlet;
7011 — a second cooling air inlet; 7012-flue gas inlet;
801-a second mixed gas inlet; 802-a second mixture outlet;
901-butterfly valve; 902-flow orifice plate; 903-flue gas circulating fan; 904-pressure gauge; 905-single valve; 906-fast pneumatic valves.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In the description of the present application, it is to be understood that the terms "upper", "lower", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The utility model relates to an use sleeve kiln of natural gas as fuel, on the basis of current sleeve kiln, the outside of the kiln body 1 sets up cooling air ring canal 6, mixes ring canal 7 and distribution ring canal 8 and realizes the circulation of flue gasProcess for increasing CO of flue gas2Concentration of CO in flue gas2The capture and recovery.
Referring to fig. 1, the utility model provides a sleeve kiln includes the kiln body 1, goes up inner skleeve 2, lower inner skleeve 3, goes up combustion chamber 4 and lower combustion chamber 5, lower inner skleeve 3 is equipped with cooling air outlet 301, it is equipped with nozzle 10 respectively with lower combustion chamber 5 to go up combustion chamber 4, the upper portion of the kiln body 1 is equipped with the exhanst gas outlet, the exhanst gas outlet is through the flue intercommunication of flue gas processing system and chimney 9, the outside of the kiln body 1 has surrounded cooling air ring canal 6, mixed ring canal 7 and distribution ring canal 8 respectively.
The utility model provides a sleeve kiln use natural gas as fuel, and the outside of the kiln body 1 still is equipped with the gas ring canal, and cold state natural gas comes from the coal gas platform and carries to the gas ring canal, and the back gets into combustion chamber 4 and lower combustion chamber 5 respectively through upper and lower gas branch pipe.
In the technical field, the flue gas treatment system generally comprises a flue gas heat exchanger, an induced draft fan, a dust remover and a dust removal fan, specifically, a flue gas outlet of an upper inner sleeve 2 of the sleeve kiln is connected to the induced draft fan through the flue gas heat exchanger, a flue gas outlet of an outer sleeve of the sleeve kiln is directly connected to the induced draft fan, and then the flue gas outlet is connected to a flue of a chimney 9 after dust removal through the dust remover. The temperature of the flue gas after dust removal is about 200 ℃.
Referring to fig. 1-2, a plurality of first cooling air inlets 601 are disposed on the cooling air loop 6 corresponding to the cooling air outlets 301, the first cooling air inlets 601 are in one-to-one communication with the cooling air outlets 301, and a first cooling air outlet 602 is disposed on the cooling air loop 6;
referring to fig. 1, 3 and 5, a first mixed gas inlet 701 and a first mixed gas outlet 702 are arranged on the mixing ring pipe 7, the first mixed gas inlet 701 comprises a second cooling air inlet 7011 and a flue gas inlet 7012, the second cooling air inlet 7011 is communicated with the first cooling air outlet 602, and the flue gas inlet 7012 is communicated with the flue of the chimney 9;
referring to fig. 1, 4 and 5, a second mixed gas inlet 801 is arranged on the distribution loop 8, and the first mixed gas outlet 702 is communicated with the second mixed gas inlet 801; the distribution ring pipe 8 is further provided with a plurality of second mixed gas outlets 802 corresponding to the burners 10, and the second mixed gas outlets 802 are connected with the burners 10 in a one-to-one correspondence manner.
Path of flue gas and cooling air:
cooling air enters the first cooling air inlet 601 from the cooling air outlet 301 of the lower inner sleeve 3, is collected in the cooling air loop 6 and then flows into the mixing loop from the first cooling air outlet 602 to the second cooling air inlet 7011; one part of the dedusted flue gas is directly discharged by a chimney 9, one part of the dedusted flue gas is guided to a flue gas inlet 7012 from a flue of the chimney 9 and flows into a mixing ring pipe 7, the flue gas and cooling air are converged and uniformly mixed in the mixing ring pipe to form mixed gas with lower oxygen content, the mixed gas flows into a second mixed gas inlet 801 through a first mixed gas outlet 702 and enters a distribution ring pipe 8, and the mixed gas is distributed to each burner 10 through a second mixed gas outlet 802.
The structure realizes the flue gas recirculation process and improves CO in the flue gas of the sleeve kiln2Concentration of CO convenient2Trapping and reducing the recovery cost. In addition, the mixed gas with low oxygen content is used as combustion-supporting air instead of the original cooling air, so that the oxygen content in the combustion process of the upper combustion chamber 4 is reduced from the low-nitrogen combustion perspective, the combustion heat release is favorably alleviated, and the generation of nitrogen oxides is inhibited.
The upper combustion chamber 4 is under-oxygen combustion, and the combustion temperature needs to be strictly controlled to ensure the working environment of refractory materials. The structure realizes the full proportion mixing of a part of smoke in the chimney 9 and the cooling air of the lower inner sleeve 3, and the air coefficient in the sleeve kiln can be adjusted according to the burnout degree of fuel so as to adapt to the technological requirements of the sleeve kiln calcination. When the air coefficient fed into the upper combustion chamber 4 is 0.5, compared with the original process, the air mixture fed into the upper combustion chamber is increased under the condition of the same oxygen amount, so that the temperature of the combustion chamber is reduced; under the condition of ensuring the same temperature, more oxygen is required to be fed, and the burnout degree of the sleeve kiln fuel is further improved.
Taking a 500tpd natural gas sleeve kiln as an example, six cooling air outlets 301 and twelve burners 10 are provided, six first cooling air inlets 601 are provided on the cooling air ring 6 corresponding to the cooling air outlets 301, and twelve second mixed gas outlets 802 are provided on the distribution ring corresponding to the burners 10, where the number of the upper inner sleeve 2, the lower inner sleeve 3, the upper combustion chamber 4 and the lower combustion chamber 5 is six.
The first cooling air inlets 601 are correspondingly connected with the cooling air outlets 301 one by one through pipelines, so that the cooling air of each cooling air outlet 301 is collected in the cooling air circular pipe 6; the first cooling air outlet 602 leads cooling air to the second cooling air inlet 7011 through a pipeline, a part of flue gas in a flue of the chimney 9 is led to the flue gas inlet 7012 through a pipeline, the cooling air and the flue gas are converged and uniformly mixed in the mixing ring pipe 7 to form mixed gas with low oxygen content, the mixed gas is led to the second mixed gas inlet 801 from the first mixed gas outlet 702 through a pipeline and enters the distribution ring pipe 8, and then the twelve second mixed gas outlets 802 are respectively communicated with the burners 10 one by one through pipelines, so that the mixed gas is conveyed to the burners 10.
The connection of the pipeline valves among the cooling air outlet 301, the cooling air loop 6, the mixing loop 7, the distribution loop 8 and the chimney 9 can be designed according to the actual requirements to adapt to the calcining process requirements of the sleeve kiln.
In a preferred embodiment, referring to FIG. 3, the mixture inlet 701 is aligned with the centerline of the first mixture outlet 702. The cooling air and the flue gas are ensured to be uniformly mixed in the mixing ring pipe 7.
In a preferred embodiment, referring to fig. 3, the second cooling air inlet 7011 and the flue gas inlet 7012 are disposed in close proximity. Also in order to ensure that the flue gas and the cooling air can be mixed evenly.
In a preferred embodiment, referring to fig. 2, the first cooling air inlets 601 are arranged uniformly in the circumferential direction of the cooling air collar 6.
In a preferred embodiment, see fig. 4, the second mixture outlets 802 are arranged uniformly in the circumferential direction of the distribution collar 8.
The first cooling air inlet and the second mixed gas outlet are uniformly distributed along the circumferential direction, and the balance of the air flow in the sleeve kiln is basically ensured.
In a preferred embodiment, referring to fig. 6, the flue gas inlet 7012 is communicated with the outlet of a flue gas circulating fan 90, the inlet of the flue gas circulating fan 903 is communicated with the flue of a chimney 9, the inlet of the flue gas circulating fan 903 is sequentially provided with a flow orifice plate 902 and a butterfly valve 901, and the outlet of the flue gas circulating fan 903 is sequentially provided with a pressure gauge 904, a one-way valve 905 and a quick pneumatic stop valve 906. Specifically, the flue gas after dust removal is led out from the flue of the chimney 9 and flows through a butterfly valve 901, a flow pore plate 902, a flue gas circulating fan 903, a pressure gauge 904, a one-way valve 905 and a quick pneumatic cut-off valve 906. Wherein, flow orifice 902 is used for measuring flue gas flow, and flue gas circulating fan 903's effect is for providing power for the flue gas, send to in mixing ring pipe 7, and flue gas circulating fan 903's exit is equipped with pressure gauge 904 for control flue gas pressure. Instruments or devices such as valves, flow, pressure, temperature, etc. can also be installed between the flue gas inlet 7012 and the stack 9 according to the actual process conditions.
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (5)

1. A sleeve kiln taking natural gas as fuel comprises a kiln body, an upper inner sleeve, a lower inner sleeve, an upper combustion chamber and a lower combustion chamber, wherein the lower inner sleeve is provided with a cooling air outlet;
the mixing ring pipe is provided with a first mixed gas inlet and a first mixed gas outlet, the first mixed gas inlet comprises a second cooling air inlet and a flue gas inlet which are arranged in close proximity, the second cooling air inlet is communicated with the first cooling air outlet, and the flue gas inlet is communicated with a flue of a chimney; a second mixed gas inlet is formed in the distribution ring pipe, and the first mixed gas outlet is communicated with the second mixed gas inlet; and the distribution ring pipe is also provided with a plurality of second mixed gas outlets corresponding to the burners, and the second mixed gas outlets are connected with the burners in a one-to-one correspondence manner.
2. The natural gas-fueled muffle according to claim 1, wherein a centerline of the first mixture inlet is collinear with a centerline of the first mixture outlet.
3. The natural gas-fueled muffle according to claim 1, wherein the first cooling air inlets are uniformly arranged in a circumferential direction of the cooling air collar.
4. The natural gas-fueled sleeve kiln according to claim 1, wherein the second mixture outlets are uniformly arranged in a circumferential direction of the distribution collar.
5. The natural gas fueled sleeve kiln according to any one of claims 1 to 4, wherein the flue gas inlet is in communication with an outlet of a flue gas circulating fan, the inlet of the flue gas circulating fan is in communication with a chimney, a flow orifice plate and a butterfly valve are sequentially arranged at the inlet of the flue gas circulating fan, and a pressure gauge, a check valve and a quick pneumatic cut-off valve are sequentially arranged at the outlet of the flue gas circulating fan.
CN201920993560.XU 2019-06-28 2019-06-28 Sleeve kiln using natural gas as fuel Expired - Fee Related CN210367457U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201920993560.XU CN210367457U (en) 2019-06-28 2019-06-28 Sleeve kiln using natural gas as fuel
PCT/CN2019/115501 WO2020258636A1 (en) 2019-06-28 2019-11-05 Sleeve kiln using natural gas as fuel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920993560.XU CN210367457U (en) 2019-06-28 2019-06-28 Sleeve kiln using natural gas as fuel

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Publication Number Publication Date
CN210367457U true CN210367457U (en) 2020-04-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111592241A (en) * 2020-05-28 2020-08-28 江苏中圣园科技股份有限公司 Low NO for sleeve kilnxCombustion process and low NOxBurning sleeve kiln
CN113149470A (en) * 2021-03-29 2021-07-23 北京卡卢金热风炉技术有限公司 External combustion annular sleeve kiln system and lime production method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2924203B1 (en) * 2007-11-26 2010-04-02 Air Liquide ADAPTATION OF AN OXYCOMBUSTION PLANT TO THE AVAILABILITY OF ENERGY AND THE QUANTITY OF CO2 TO CAPTURATE
CN109737763A (en) * 2018-12-21 2019-05-10 首钢京唐钢铁联合有限责任公司 Improve sleeve kiln flue gas CO2Method of concentration
CN109574522B (en) * 2018-12-25 2024-06-21 石家庄新华能源环保科技股份有限公司 Sleeve kiln combustion system
CN109519917B (en) * 2019-01-03 2025-04-25 上海华之邦科技股份有限公司 A low-nitrogen combustion device with internal flue gas circulation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111592241A (en) * 2020-05-28 2020-08-28 江苏中圣园科技股份有限公司 Low NO for sleeve kilnxCombustion process and low NOxBurning sleeve kiln
CN113149470A (en) * 2021-03-29 2021-07-23 北京卡卢金热风炉技术有限公司 External combustion annular sleeve kiln system and lime production method
CN113149470B (en) * 2021-03-29 2023-09-08 北京卡卢金热风炉技术有限公司 External combustion annular sleeve kiln system and lime production method

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