CN101921073B - Method and machine for producing lime - Google Patents

Method and machine for producing lime Download PDF

Info

Publication number
CN101921073B
CN101921073B CN2010102676913A CN201010267691A CN101921073B CN 101921073 B CN101921073 B CN 101921073B CN 2010102676913 A CN2010102676913 A CN 2010102676913A CN 201010267691 A CN201010267691 A CN 201010267691A CN 101921073 B CN101921073 B CN 101921073B
Authority
CN
China
Prior art keywords
calcining
furnace
lime
gas
combustion chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN2010102676913A
Other languages
Chinese (zh)
Other versions
CN101921073A (en
Inventor
贾会平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shijiazhuang Xinhua Energy Environmental Protection Technology Co Ltd
Original Assignee
贾会平
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 贾会平 filed Critical 贾会平
Priority to CN2010102676913A priority Critical patent/CN101921073B/en
Publication of CN101921073A publication Critical patent/CN101921073A/en
Application granted granted Critical
Publication of CN101921073B publication Critical patent/CN101921073B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention provides a method and a machine for producing lime. The machine mainly comprises a combustion chamber, a dividing wall type calcining furnace, a dividing wall type gasification furnace, a cooling chamber, material delivery equipment and a gas treatment device, wherein the calcining furnace consists of a smoke channel and a calcining chamber; the gasification furnace consists of a smoke channel and a gasification chamber; the calcining chamber and the gasification chamber are surrounded by heat conducting walls; and the heat conducting walls are made of silicon carbide bricks or high-alumina bricks, and the like. In the invention, coal gas generated by coal gasification and solid fuels combust together in the combustion chamber; smoke indirectly heats and calcines lime stones in the calcining furnace and indirectly heats the solid fuels in the gasification furnace for coal gasification; and cooling air is used as combustion air of the combustion chamber. In the invention, the coal gasification is accompanied in the calcining process, thereby production operations are optimized, and gas fuels are saved; and the lime stones are indirectly heated and calcined, thus the fuels or the smoke is not in direct contact with a calcined material so as to prevent harmful substances such as dust, sulphur, and the like from polluting lime products and improve the quality and the clarity of the lime products.

Description

A kind of method and machinery of producing lime
Technical field
The invention belongs to building materials, chemical production technical field, relate to a kind of method and machinery of producing lime, be specifically related to a kind of indirect heating calcined material and follow the method and the machinery of the production lime of coal gasification course.
Background technology
Lime is important material of construction, also is important source material metallurgical, chemical field, and prior art is to be raw material with rhombspar, Wingdale, adopts the shaft furnace lime kilning of band burning beam.The deficiency of process is like this: furnace gas mobile direction and building stones mobile are in the opposite direction in the shaft furnace, and promptly building stones move from the top down, and furnace gas flows from bottom to top; The air resistance of building stones is big, and furnace pressure is high, occurs the gas segregation phenomenon easily; It is inhomogeneous to cause Wingdale to be heated, and influences quality product.The applicant the patent No. be the utility model patent of ZL200320111077.3 disclose a kind of in the external heating type limestone kiln; The firing system of this limestone kiln is provided with combustion tube of furnace beam and air burner, and combustion tube of furnace beam is provided with burner (burner), has solved the distribution of calcining zone flame and heat effectively; Improved efficiency of combustion; But combustion tube of furnace beam need cool off the beam body with heat-eliminating medium in the course of the work, not only slatterns some heats, and has increased equipment cost and process cost.The limestone kiln needs complete installation, is unfavorable for moving or changing, and also is unfavorable for the producing in serial form element of installation.
The applicant is the method and apparatus that 201010156632.9 application for a patent for invention discloses a kind of calcining materials at number of patent application; The preheating chamber of said equipment, calcining compartment and cooling room are split-type structural; Preheating chamber is divided into low-temperature prewarming chamber and high temperature preheating chamber, and cooling room is divided into high temperature cooling chamber and subcooling chamber.Calcined material passes through pipe chain conveyor delivery between apparatus for feeding, low-temperature prewarming chamber, high temperature preheating chamber, calcining compartment, high temperature cooling chamber, subcooling chamber.Calcined material carries out preheating, calcining and process of cooling in split type preheating chamber, calcining compartment and cooling room, process calcination product.High-temperature gas behind the cooling room chilled product is delivered to preheating chamber preheating calcined material through gas piping.This each unit of patented claim equipment is a stand-alone assembly, and each component devices can separately be manufactured, field assembly, and convenient transportation, installation, maintenance and replacing help the producing in serial form calciner.But this patented technology fuel is directly at calcining compartment burning calcining materials, and the incendiary dust directly contacts Wingdale and lime product with objectionable impuritiess such as sulphur in the flue gas, influences the quality of lime product.
Summary of the invention
For overcoming the deficiency of above-mentioned prior art; The present invention provides a kind of method of producing lime, through the high-temperature flue gas that the exterior combustion chamber burning produces, produces lime at dividing wall type calcining furnace indirect heating calcining materials; Utilize dividing wall type vapourizing furnace indirect heating generation coal gas simultaneously; Reduce and pollute, improve the quality of products, save the energy.Another object of the present invention provides a kind of machinery of realizing above-mentioned production lime method.
The method of production lime provided by the invention does; Calcined material is through preheating, calcining and process of cooling; Process lime product; The preheating of said material, calcining and process of cooling are carried out respectively in dividing wall type calcining furnace and cooling room, and the product after the calcining goes out device after being transported to the cooling room cooling through material transfer equipment.The calcining materials process is followed coal gasification course in the calcining materials process; Coal gas that gasification produces and solid fuel are together in combustion chambers burn; The flue gas that produces is transported to dividing wall type calcining furnace indirect heating calcined material through pipeline; Be transported to dividing wall type vapourizing furnace indirect heating solid fuel then and carry out gasification, the warm air behind the cool lime product is as the combustion air of combustion chamber.
Calcined material is organic or inorganic materials such as Wingdale, rhombspar, silicate or its mixture; Fuel is the mixture of solid fuel, liquid fuel, geseous fuel or above-mentioned three kinds of fuel; Solid fuel is coal dust, coke powder, small-particle lump coal, breathes shell, carbon containing dressing pelletizing, solid fuel or its mixture; The dressing of breathing shell or carbon containing dressing pelletizing is that limestone powder, rhombspar powder, silicate powder or its mixture adding tackiness agent are processed, and breathing in the shell involucrum has carbonaceousmaterial, and the amount of carbonaceousmaterial is 0~100%; Tackiness agent is water glass, silicon sol.
A kind of machinery of producing the lime method mainly is made up of combustion chamber, 1~5 interstation wall type calcining furnaces, 1~5 cooling rooms, material transfer equipment, gas treatment equipment, apparatus for feeding, discharging equipment and blowdown systems at least at least.Said machinery also comprises at least 1~5 interstation wall type vapourizing furnaces, and the vapourizing furnace fuel inlet is connected with fuel charge equipment, is connected through material transfer equipment between the vapourizing furnace and between vapourizing furnace and the combustion chamber solid fuel inlet.The calcined material feeding equipment is connected with the calcining furnace material inlet, is connected through material transfer equipment between calcining furnace and the calcining furnace, between calcining furnace and the cooling room and between cooling room and the cooling room, and the cooling room material outlet is connected with discharging equipment.Between the calcining compartment, between calcining compartment and the vaporizer and be connected through the bubbing pipeline between the vaporizer, the gasifier gas outlet is connected to the burner of combustion chamber through gas treatment equipment, and blower fan is connected to burner through cooling room.The gas fume of combustion chamber outlet is connected to blowdown system through the exhaust gases passes of calcining furnace with gasification kiln gas passage.
The inside of vapourizing furnace is made up of exhaust gases passes and 1~10 vaporizer at least, and vaporizer is surrounded by heat conducting wall, and the space between gasification furnace wall and the heat conducting wall is an exhaust gases passes.The inside of calcining furnace is made up of exhaust gases passes and 1~10 calcining compartment at least, and calcining compartment is surrounded by heat conducting wall, and the space between calcining furnace wall and the heat conducting wall is an exhaust gases passes.The material of heat conducting wall is silicon carbide brick, high alumina brick, and refractory materials, high temperature steel or Heat resistant casting are not got rid of the heat conducting wall of using other material.
Gas treatment equipment comprises gas purifying equipment, heat-exchange equipment, cooling apparatus, pressure exerting device, water removal device, sweetener and decoking equipment.Material transfer equipment is pipe chain transfer roller, chapelet, gas transportation machine or suction conveyor.The combustion chamber is provided with upper and lower two row's burners and the outlet of two smoke discharging, and every row is provided with at least 1~10 burners, and upper and lower row's burner relative position is installed, and exhanst gas outlet is positioned at the opposite of burner.
Compared with prior art; Advantage of the present invention is, flue gas is through dividing wall type calcining furnace indirect heating calcined material, and fuel or flue gas directly do not contact with calcined material; Avoid objectionable impuritiess such as dust, sulphur to pollute lime product, improve the quality and the clarity of lime product.Follow coal gasification course in the calcination process, the coal gas of generation is as fuel, and both fuel saving can improve combustion efficacy again.The machinery that the present invention produces lime is split-type structural, is convenient to make, transports, installs and maintenance, and reasonable integral structure helps the calcining machine seriation, standardizes and produce.It is combustion-supporting that warm air after the cool lime directly is used for the combustion chamber, reduces the fresh air usage quantity, reduces greenhouse gas emission, helps environment protection.Material is carried through pipe chain transfer roller, chapelet, gas transportation machine or suction conveyor, helps realizing split type operation, has increased the handiness of operation.Can use dead small or powder, practice thrift high quality raw material.
Description of drawings
Fig. 1 produces the schematic flow sheet of lime machinery for the present invention;
Fig. 2 is the vapourizing furnace schematic cross-section;
Fig. 3 is the calcining furnace schematic cross-section.
Wherein:
1-fuel charge device, 2-coal hopper, 3 (3a, 3b)-vapourizing furnace, 4-exhaust gases passes, 5-vaporizer, 6-valve, 7-material transfer equipment, 8-gas exit, 9-gas treatment equipment, 10-feeding device, 11-hopper, 12-calcining compartment, 13 (13a, 13b)-calcining furnace, 14-exhanst gas outlet, 15-combustion chamber, 16-calcining compartment hopper, 17-burner, 18a, 18b-cooling room, 19-discharge bucket, 20-gasification furnace wall, 21-heat conducting wall, 22-calcining furnace wall, 23-bubbing pipeline, 24-flue gas pipeline.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
The present invention produces the mechanical as shown in Figure 1 of lime; Mainly by combustion chamber 15; Two interstation wall type calcining furnace 13a, 13b, two interstation wall type vapourizing furnace 3a, 3b, two cooling room 18a, 18b, material transfer equipment 7, gas treatment equipment 9, apparatus for feeding, discharging equipment and blowdown systems are formed.The combustion chamber is provided with upper and lower two row's burners 17 and two smoke discharging outlet 14, and every row is provided with 5 burners, and burner has fuel gas inlet and gas inlet.Upper and lower row's burner relative position is installed, and exhanst gas outlet is positioned at the opposite of burner.As shown in Figure 2, the inside of vapourizing furnace is made up of exhaust gases passes 4 and 2 vaporizers 5, and vaporizer is surrounded by heat conducting wall 21, and the space between gasification furnace wall 20 and the heat conducting wall is an exhaust gases passes.As shown in Figure 3, the inside of calcining furnace is made up of exhaust gases passes 4 and 4 calcining compartments 12, and calcining compartment is surrounded by heat conducting wall 21, and the space between calcining furnace wall 22 and the heat conducting wall 21 is an exhaust gases passes.The material of heat conducting wall is a high alumina brick in vapourizing furnace and the calcining furnace.Gas treatment equipment 9 comprises gas purifying equipment, heat-exchange equipment, cooling apparatus, pressure exerting device, water removal device, sweetener and decoking equipment.Blowdown system comprises fly-ash separator, induced draft fan and chimney.Material transfer equipment 7 is selected chapelet.Fuel-feed equipment comprises fuel charge device 1 and coal hopper 2, and the fuel charge device is connected with vapourizing furnace 3a material inlet through coal hopper.Vapourizing furnace 3a material outlet is connected to the material inlet of vapourizing furnace 3b through chapelet, and the material outlet of vapourizing furnace 3b is connected to combustion chamber hopper 16 through chapelet, is connected to the solid fuel inlet of combustion chamber 15 through the combustion chamber hopper.The feeding unit of calcined material comprises feeding device 10 and hopper 11; Feeding device is connected with calcining furnace 13a material inlet through hopper; Calcining furnace 13a material outlet is connected to the material inlet of calcining furnace 13b through chapelet; Calcining furnace 13b material outlet is connected to the material inlet of cooling room 18a through chapelet, and the material outlet of cooling room 18a is connected to the material inlet of cooling room 18b, and the material outlet of cooling room 18b is connected to discharge bucket 19.Blower fan is connected to cooling room 18b cooling air inlet, and cooling room 18b cooling air outlet is connected to cooling room 18a cooling air inlet, and cooling room 18a cooling air outlet is connected to the gas inlet of burner 17.Between the calcining compartment, between calcining compartment and the vaporizer and be connected through bubbing pipeline 23 between the vaporizer, vapourizing furnace 3a gas exit 8 is connected to the fuel inlet of combustion chamber burner 17 through gas treatment equipment 9.Burn chamber exhanst gas outlet 14 and be connected with vapourizing furnace 3a, 3b exhaust gases passes with the exhaust gases passes 4 of calcining furnace 13a, 13b successively through flue gas pipeline 24, the exhanst gas outlet of vapourizing furnace 3a exhaust gases passes is connected to blowdown system.
Present embodiment is calcining materials with the Wingdale; With the high-volatile coal dust is fuel production lime; Production process does; Coal dust is sent into the vaporizer 5 of vapourizing furnace 3a through fuel charge device 1, coal hopper 2, and the flue gas in the exhaust gases passes 4 passes to vaporizer heating coal dust through heat conducting wall 21 with heat, and coal dust operation downwards continues heating and gasifying through the enter the mouth vaporizer of vapourizing furnace 3b of vaporizer outlet, chapelet, vaporizer.Be transported to combustion chamber hopper 16 through chapelet then, again through the solid fuel combustion chambers burn that enters the mouth.The Wingdale raw material is through the calcining compartment 12 of feeding device 10, hopper 11 to calcining furnace 13a, and the high-temperature flue gas of exhaust gases passes 4 is through the Wingdale in the heat conducting wall preheating and calcining chambers 12 21.Wingdale operation downwards is through the calcining compartment of discharge port, chapelet and calcining furnace 13b opening for feed entering calcining furnace 13b, and 1500~1700 ℃ of high-temperature flue gas become lime through heat conducting wall 21 heating and calcining Wingdales in the exhaust gases passes.Lime passes through cooling room 18a, 18b successively with chapelet, and the cooling air that is blasted by blower fan cools off the lime among cooling room 18b, the 18a successively, and cooled lime product goes out device through discharge port, discharge bucket 19.The gas that decomposition of limestone produces in the calcining furnace 13b calcining compartment is through bubbing pipeline 23, the calcining furnace 13a vaporizer to vapourizing furnace 3b; Through the vaporizer of vapourizing furnace 3b vaporizer to vapourizing furnace 3a, the coal gas that produces with vapourizing furnace 3a, 3b gasification by gas exit 8 after gas treatment equipment 9 is handled to the combustion chamber 15.Coal gas and the air after the preheating of cooling room cool lime get into combustion chambers burn through burner 17; Both sides burner alternate run or burn simultaneously; Or setting-up time at interval, and the valve 6 through gaspipe line and airline before the control entering burner carries out switch operation automatically.Coal gas and air are introduced into the burner of bottom, left side, and the flue gas that the burning back produces is gone out from the exhanst gas outlet 14 on right side.Switching-over then, the burner of coal gas and air admission right upper portion, go out from the exhanst gas outlet on opposite the burning back.High-temperature flue gas successively through the exhaust gases passes of the exhaust gases passes 4 of calcining furnace 13b, 13a and vapourizing furnace 3b, 3a, carries out indirect heating to the coal dust in Wingdale in the calcining compartment 12 and the vaporizer 5 through flue gas pipeline.Flue gas leaves vapourizing furnace 3a exhaust gases passes and exports to the blowdown system discharging, is reduced to below 150 ℃ through the temperature of heat-exchange equipment with fume emission.

Claims (11)

1. method of producing lime; Calcined material is through preheating, calcining and process of cooling; Process lime product; The preheating of said material, calcining and process of cooling are carried out respectively in dividing wall type calcining furnace (13a, 13b) and cooling room (18a, 18b), and the product after the calcining goes out device after being transported to the cooling room cooling through material transfer equipment (7), and it is characterized in that: the calcining materials process is followed coal gasification course; Coal gas that gasification produces and fuel are together in combustion chambers burn; The flue gas that produces is transported to dividing wall type calcining furnace indirect heating calcined material through pipeline, is transported to dividing wall type vapourizing furnace (3a, 3b) indirect heating solid fuel then and carries out gasification, and the warm air behind the cool lime product is as the combustion air of combustion chamber.
2. mechanism of producing lime; Mainly form by combustion chamber (15), 1~5 interstation wall type calcining furnace (13a, 13b), 1~5 cooling room (18a, 18b), material transfer equipment (7), gas treatment equipment (9), apparatus for feeding, discharging equipment and blowdown system; It is characterized in that: said machinery also comprises 1~5 interstation wall type vapourizing furnace (3a, 3b); Vapourizing furnace (3a) fuel inlet is connected with fuel charge equipment, is connected through material transfer equipment between the vapourizing furnace and between vapourizing furnace and the combustion chamber solid fuel inlet; The calcined material feeding equipment is connected with the calcining furnace material inlet, is connected through material transfer equipment between calcining furnace and the calcining furnace, between calcining furnace and the cooling room and between cooling room and the cooling room, and cooling room (18b) material outlet is connected with discharging equipment; Between the calcining compartment, between calcining compartment and the vaporizer and be connected through bubbing pipeline (23) between the vaporizer; Vapourizing furnace (3a) gas exit (8) is connected to the burner (17) of combustion chamber through gas treatment equipment (9), and blower fan is connected to burner through cooling room (18a, 18b); Gas fume of combustion chamber outlet (14) is connected to blowdown system through the exhaust gases passes (4) and the gasification kiln gas passage of calcining furnace.
3. according to the mechanism of the said production lime of claim 2; It is characterized in that: the inside of said vapourizing furnace is made up of exhaust gases passes and 1~10 vaporizer (5); Vaporizer is surrounded by heat conducting wall (21), and the space between gasification furnace wall (20) and the heat conducting wall is exhaust gases passes (4).
4. according to the mechanism of the said production lime of claim 2; It is characterized in that: the inside of said calcining furnace is made up of exhaust gases passes and 1~10 calcining compartment (12); Calcining compartment is surrounded by heat conducting wall (21), and the space between calcining furnace wall (22) and the heat conducting wall is exhaust gases passes (4).
5. according to the mechanism of claim 3 or 4 said production lime, it is characterized in that: the material of said heat conducting wall is silicon carbide brick, high alumina brick, silica brick, high temperature steel or Heat resistant casting.
6. according to the mechanism of the said production lime of claim 2, it is characterized in that: said gas treatment equipment comprises heat-exchange equipment, gas purifying equipment, cooling apparatus, pressure exerting device, water removal device, sweetener and decoking equipment.
7. according to the mechanism of the said production lime of claim 2, it is characterized in that: said material transfer equipment is pipe chain transfer roller, chapelet, gas transportation machine or suction conveyor.
8. according to the mechanism of the said production lime of claim 2; It is characterized in that: said combustion chamber is provided with upper and lower two row's burners (17) and two smoke discharging outlets (14); Every row is provided with 1~10 burner, and upper and lower row's burner relative position is installed, and exhanst gas outlet is positioned at the opposite of burner.
9. according to the mechanism of the said production lime of claim 2, it is characterized in that: the dividing wall type calcining furnace (13b) in the said device is inserted in the combustion chamber, makes space between heat conducting wall and furnace wall, combustion chamber as combustion chamber and exhaust gases passes.
10. according to the mechanism of the said production lime of claim 2; It is characterized in that: the material outlet of wall type calcining furnace (13b) is connected to the material inlet of combustion chamber in the middle of the said device; Directly get into the combustion chamber calcining after making the material preheating, completion incinerating lime cools off through the discharge port entering cooling room of combustion chamber.
11. the mechanism according to the said production lime of claim 2 is characterized in that: add solid at burner (17), liquid or geseous fuel or their mixture fuel, combustion-supporting gas are pure oxygen or oxygen rich gas.
CN2010102676913A 2010-08-31 2010-08-31 Method and machine for producing lime Active CN101921073B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102676913A CN101921073B (en) 2010-08-31 2010-08-31 Method and machine for producing lime

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010102676913A CN101921073B (en) 2010-08-31 2010-08-31 Method and machine for producing lime

Publications (2)

Publication Number Publication Date
CN101921073A CN101921073A (en) 2010-12-22
CN101921073B true CN101921073B (en) 2012-09-05

Family

ID=43336321

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102676913A Active CN101921073B (en) 2010-08-31 2010-08-31 Method and machine for producing lime

Country Status (1)

Country Link
CN (1) CN101921073B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103524057A (en) * 2013-10-22 2014-01-22 瓮福(集团)有限责任公司 Method for preparing lime by using byproduct calcium carbonate obtained from preparation of ammonium sulfate by phosphogypsum as raw material
CN103664016B (en) * 2013-11-09 2015-07-15 石家庄新华能源环保科技股份有限公司 Method of producing cement through active coal gasification and rotary kiln device
CA2930437A1 (en) * 2013-11-29 2015-06-04 Calix Ltd Process and apparatus for manufacture of portland cement
CN104211308B (en) * 2014-09-03 2016-02-10 石家庄新华能源环保科技股份有限公司 A kind of dividing wall type material calcining device
CN106698978B (en) * 2016-12-28 2019-05-03 柳州市昌泉贸易有限公司 A kind of method of continuous calcining production active lime
CN106673463B (en) * 2016-12-28 2019-05-03 柳州市昌泉贸易有限公司 A kind of active lime production method
CN106630690B (en) * 2016-12-28 2019-06-18 柳州市昌泉贸易有限公司 A kind of method of vacuum calcining production active lime

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2808903Y (en) * 2005-07-15 2006-08-23 王茂生 Vertical limestone kiln using producer gas as fuel
CN2876087Y (en) * 2005-09-21 2007-03-07 刘永智 Environmental protection energy saving lime calcining furnace
CN2908490Y (en) * 2005-12-07 2007-06-06 刘应雄 Horizontal lime pit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2808903Y (en) * 2005-07-15 2006-08-23 王茂生 Vertical limestone kiln using producer gas as fuel
CN2876087Y (en) * 2005-09-21 2007-03-07 刘永智 Environmental protection energy saving lime calcining furnace
CN2908490Y (en) * 2005-12-07 2007-06-06 刘应雄 Horizontal lime pit

Also Published As

Publication number Publication date
CN101921073A (en) 2010-12-22

Similar Documents

Publication Publication Date Title
CN101921073B (en) Method and machine for producing lime
CN101269919B (en) Vertical kiln apparatus for materials calcination
CN103058536B (en) Heat-accumulation dividing-wall heating rotary kiln device
CN102219402B (en) Method and device for calcining materials
CN102875036A (en) Heat storage type lime rotary kiln
CN101956037A (en) Method and device for indirect heating type reduction iron making
WO2018192267A1 (en) Lime kiln device for fully recovering co2
CN203007148U (en) Low-heat-value fuel lime kiln
CN102620573B (en) Utilization method and system for tail gas of calcium carbide furnace
CN102557492A (en) Heat accumulating type double-hearth lime kiln
CN101817649B (en) Method and equipment for calculating materials
CN102992660B (en) Low-heat value fuel lime kiln
CN101984319A (en) Energy-saving and efficiency-improvement double-temperature-field rotary kiln system
CN102992661B (en) Beam type heat storage lime kiln
CN203007146U (en) Beam type heat accumulation lime kiln
CN101093140A (en) Heat storage type vertical metal magnesium reducing furnace
CN101792273B (en) Method and machine for calcining materials
CN101817648B (en) Method and equipment for calcining materials
CN201522188U (en) Flame-isolated rotary kiln for calcining dolomite
CN203144293U (en) Air/coal gas double pre-heating lime kiln
CN104833203A (en) Heat-accumulating-type cement calcination device
CN109574523A (en) A kind of limekiln that the hot sending of gasification furnace coal gas of high temperature is directly burnt
CN104119008A (en) Device using flue gas calcining for production of lime
CN101846447A (en) Down draft kiln
CN202092458U (en) Half regenerative type rotating bed device

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 050091 SHIJIAZHUANG, HEBEI PROVINCE TO: 051431 SHIJIAZHUANG, HEBEI PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20130128

Address after: 051431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School)

Patentee after: Shijiazhuang Xinhua Energy and Environmental Protection Technology Co., Ltd.

Address before: 050091 Hebei city of Shijiazhuang Province in the South Street Garden Xucheng No. 2461

Patentee before: Jia Huiping

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: SHIJIAZHUANG XINHUA ENERGY ENVIRONMENTAL TECHNOLOG

Free format text: FORMER OWNER: JIA HUIPING

Effective date: 20130128

DD01 Delivery of document by public notice

Addressee: Li Zhimin

Document name: Notification of Passing Examination on Formalities