CN102219409A - Calcining process and equipment for preheating and pre-decomposing cement clinker in high-solid-gas ratio - Google Patents
Calcining process and equipment for preheating and pre-decomposing cement clinker in high-solid-gas ratio Download PDFInfo
- Publication number
- CN102219409A CN102219409A CN 201110070270 CN201110070270A CN102219409A CN 102219409 A CN102219409 A CN 102219409A CN 201110070270 CN201110070270 CN 201110070270 CN 201110070270 A CN201110070270 A CN 201110070270A CN 102219409 A CN102219409 A CN 102219409A
- Authority
- CN
- China
- Prior art keywords
- gas ratio
- high solid
- heat exchanger
- gas
- whirlwind
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
- C04B7/4476—Selection of the kiln atmosphere
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/2016—Arrangements of preheating devices for the charge
- F27B7/2041—Arrangements of preheating devices for the charge consisting of at least two strings of cyclones with two different admissions of raw material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a calcining process for preheating and pre-decomposing cement clinker in high solid-gas ratio. The process comprises the following steps of: firstly carrying out heat exchange between cement raw materials and hot flue gas in a high-solid-gas-ratio preheater during cement clinker calcining process, then introducing into an external circulating type high-solid-gas-ratio decomposition furnace for decomposing carbonates in the cement raw materials, introducing the decomposed materials into a rotary kiln for calcination, and finally introducing the fully calcined materials into a cooling machine for cooling. According to the invention, a high-solid-gas-ratio cross-flow heat-treatment device is utilized to preheat raw materials and simultaneously recover heat enthalpy from waste flue gas efficiently; and the external circulating type high-solid-gas-ratio decomposition furnace is employed to completely decompose the preheated cement raw materials in a suspension form, thus effectively reducing the temperature of exhaust gas discharged by the system and the heat consumption of unit cement clinker, improving the thermal efficiency of the system, apparent decomposition rate of materials in the kiln, the unit volume production of the decomposition furnace and unit volume production of the rotary kiln, enhancing the thermal stability of the decomposition furnace, and simultaneously reducing the discharge of SO2, NOx and other harmful gases.
Description
Technical field
The invention belongs to the cement industry field, relate to a kind of method for production of cement and device, be specifically related to a kind of high solid-gas ratio preheating predecomposition cement clinker calcining process and equipment.
Background technology
Since the 1980s, New Type Dry-process Cement Production technology is promoted rapidly, progressively becomes the main flow production technique.The cement clinker hear rate is reduced to the 3100kJ/kg grog, and the thermo-efficiency of cement clinker firing system is brought up to about 45%.But the spent air temperture that this system discharges is still up to 310～370 ℃, the unit volume output＜5t/m of rotary kiln
3.d.
How further to reduce the combustion gas temperature, improve cement clinker firing system thermo-efficiency, reduce grog and burn till hear rate, improve the unit volume output of rotary kiln, reduce obnoxious flavour CO
2, SO
2, NOx etc. discharging be the technical problem that cement manufacturing concern needs to be resolved hurrily.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of high solid-gas ratio preheating predecomposition cement clinker calcining process and equipment, realize the high solid-gas ratioization of pre-heating system by cross material flow, realize the high solid-gas ratioization of decomposing furnace device by the material outer circulation, reduce cement clinker and burnt till hear rate, improve the stand-alone device production capacity, reduced the discharging of toxic and harmful.
To achieve these goals, the technical solution used in the present invention is:
A kind of high solid-gas ratio preheating predecomposition cement clinker calcining process, in the cement clinker sintering process, cement raw material at first carries out heat exchange with hot flue gas in high solid-gas ratio preheater 1, enter outer circulation type high solid-gas ratio decomposing furnace 2 subsequently, finish the decomposition of carbonate in the cement raw material, material after the decomposition enters rotary kiln 3 calcining, and the material after fully calcined enters cooler 4 coolings, finishes clinker burning.
Wherein, described hot flue gas is from the rotary kiln tail, when temperature is reduced to the discharge system by the highest about 900 ℃ 250～350 ℃, and the calcining temperature of rotary kiln (3) is 1300～1450 ℃, cooler (4) is cooled to 60 ℃ with material.
The present invention also provides a kind of equipment of realizing described technology, comprises
High solid-gas ratio preheater 1, whirlwind heat exchanger by the above parallel arranged of 2 row is formed, each is listed as uppermost whirlwind heat exchanger and forms first module, each is listed as nethermost whirlwind heat exchanger and forms the most last unit, the airflow route of every row whirlwind heat exchanger is a series system, cement slurry carries out heat exchange from each unitary first row whirlwind heat exchanger beginning with useless flue gas, goes through all over the first row whirlwind heat exchanger that enters next unit behind each row;
Outer circulation type high solid-gas ratio decomposing furnace 2, comprise decomposing furnace body 21, the outlet of decomposing furnace body 21 is communicated with cyclone separator 22, the discharge port of cyclone separator 22 is communicated with first tremie pipe 222 by the first discharging cone 221, cyclone separator 22 also is communicated with whirlwind tube 23, and the discharge port of whirlwind tube 23 is communicated with second tremie pipe 232 by the second discharging cone 231;
The whirlwind heat exchanger inlet of last row of final stage of high solid-gas ratio preheater 1 links with the outlet of decomposing furnace body 21.
The characteristics of high solid-gas ratio preheater 1 of the present invention be with the air-flow of in-parallel with intersect the materials flow of serial and combine, thereby improved the solid-gas ratio of preheating unit and the heat exchange efficiency of system.
The characteristics of outer circulation type high solid-gas ratio decomposing furnace 2 are the stove outer circulations by material, have promoted the apparent rate of decomposition of the thermostability of decomposing furnace and the material of coming out of the stove.
The present invention compared with prior art has the following advantages:
One) because in present method, in each unit of gas-solid heat exchange, the solid and gas mass ratio exceeds existing common preheater more than one times; Solid powder content in the outer circulation type high solid-gas ratio decomposing furnace also exceeds other type of decomposition stove more than 30%, make the spent air temperture of discharge system reduce to 240～280 ℃, the apparent rate of decomposition of carbonate of using preheating precalcining system material surpasses 97%, therefore promoted significantly system thermo-efficiency, improved system throughput.
Two) high solid-gas ratio preheating predecomposition cement clinker calcining process of the present invention can significantly improve the unit production capacity of kiln system, and system's operation is more stable, operates simpler.
Three) high solid-gas ratio preheating predecomposition cement clinker calcining process of the present invention, significantly increased the contact area between gas-solid, because carbonate decomposition has produced a large amount of basic oxide in the decomposing furnace,, can reduce the content of SO2 in the combustion gas so significant desulfurization effect promotes; Because the service temperature of outer circulation type decomposing furnace can suitably reduce, the temperature fluctuation in the stove is very little, so can reduce the content of NOx in the combustion gas in addition.
In sum, the present invention has plurality of advantages and practical value, no matter it all has bigger improvement on product structure or function, obvious improvement is arranged technically, and has produced good effect.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one.
Fig. 2 is the structural representation of the embodiment of the invention two.
Fig. 3 is the structural representation of the embodiment of the invention three.
Embodiment
Reach technique means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, the present invention is described in further details below in conjunction with drawings and Examples.
The present invention is a kind of high solid-gas ratio preheating predecomposition cement clinker calcining process, in the cement clinker sintering process, cement raw material at first carries out heat exchange with hot flue gas in high solid-gas ratio preheater 1, enter outer circulation type high solid-gas ratio decomposing furnace 2 subsequently, finish the decomposition of carbonate in the cement raw material, material after the decomposition enters rotary kiln 3 calcining, and the material after fully calcined enters cooler 4 coolings, finishes clinker burning.
The present invention also provides a kind of equipment of realizing described technology, comprises
High solid-gas ratio preheater 1, whirlwind heat exchanger by the above parallel arranged of 2 row is formed, each is listed as uppermost whirlwind heat exchanger and forms first module, each is listed as nethermost whirlwind heat exchanger and forms the most last unit, the airflow route of every row whirlwind heat exchanger is a series system, cement slurry carries out heat exchange from each unitary first row whirlwind heat exchanger beginning with useless flue gas, goes through all over the first row whirlwind heat exchanger that enters next unit behind each row;
Outer circulation type high solid-gas ratio decomposing furnace 2, comprise decomposing furnace body 21, the outlet of decomposing furnace body 21 is communicated with cyclone separator 22, the discharge port of cyclone separator 22 is communicated with first tremie pipe 222 by the first discharging cone 221, cyclone separator 22 also is communicated with whirlwind tube 23, the discharge port of whirlwind tube 23 is communicated with second tremie pipe 232 by the second discharging cone 231, for preventing the reverse channelling of air-flow, be provided with on first tremie pipe 222 on the first discharging air valve, 223, the second tremie pipes 232 the second discharging air valve 233 is set;
The whirlwind heat exchanger inlet of last row of final stage of high solid-gas ratio preheater 1 links with the outlet of decomposing furnace body 21.
In embodiment one, as shown in Figure 1, high solid-gas ratio preheater 1 is made up of 5 grades of bi serie high solid-gas ratio whirlwind heat exchangers, cooperate outer circulation type high solid-gas ratio decomposing furnace 2 to form high solid-gas ratio preheating precalcining system again, wherein use a cyclone separator 22 and a five-stage whirlwind separator in the outer circulation type high solid-gas ratio decomposing furnace 2, wherein this five-stage whirlwind separator can be regarded a unit of high solid-gas ratio decomposition furnace system as, the final stage unit that also can regard pre-heating system as, this is the unit that connects decomposing furnace and preheater, function is that gas-solid is separated, solid-phase material enters rotary kiln, and useless flue gas is used for preheated raw meal.
The actual effect of embodiment one in experiment is as shown in table 1.
In embodiment two, high solid-gas ratio preheater 1 is made up of 5 grades of bi serie high solid-gas ratio whirlwind heat exchangers, cooperate outer circulation type high solid-gas ratio decomposing furnace 2 to form high solid-gas ratio preheating precalcining system again, wherein use two groups of cyclone separators 22 and two five-stage whirlwind separators in the outer circulation type high solid-gas ratio decomposing furnace 2.
In embodiment three, high solid-gas ratio preheater 1 is made up of 5 grades of bi serie high solid-gas ratio whirlwind heat exchangers, cooperate outer circulation type high solid-gas ratio decomposing furnace 2 to form high solid-gas ratio preheating precalcining system again, wherein use horizontal cyclone separator in the outer circulation type high solid-gas ratio decomposing furnace.
The characteristics of high solid-gas ratio preheater 1 of the present invention be with the air-flow of in-parallel with intersect the materials flow of serial and combine, thereby improved the solid-gas ratio of preheating unit and the heat exchange efficiency of system.
The characteristics of outer circulation type high solid-gas ratio decomposing furnace 2 are the stove outer circulations by material, have promoted the apparent rate of decomposition of the thermostability of decomposing furnace and the material of coming out of the stove.
In addition, among the figure, C1A, C1B---C5A, C5B represent 5 grades of bi serie high solid-gas ratio whirlwind heat exchangers.
Above embodiment is not of the present invention exhaustive, decomposition furnace structure of the present invention can have various ways, and for example, the unit number of described whirlwind heat exchanger can from 2 to 6 wait, its columns can be 2 or 3 row, and unit number and columns also can be determined according to the material situation of reality.Simultaneously, the gas sectional wind velocity is preferably in 5～10 meter per second scopes in the outer circulation type high solid-gas ratio decomposing furnace 2, but also can adjust according to material amount in the stove, and material outer circulation amount of the present invention is adjustable, and hot blast inbound traffics of the present invention are also adjustable simultaneously.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. high solid-gas ratio preheating predecomposition cement clinker calcining process, it is characterized in that, in the cement clinker sintering process, cement raw material at first carries out heat exchange with hot flue gas in high solid-gas ratio preheater (1), enter outer circulation type high solid-gas ratio decomposing furnace (2) subsequently, finish the decomposition of carbonate in the cement raw material, the material after the decomposition enters rotary kiln (3) calcining, material after fully calcined enters cooler (4) cooling, finishes clinker burning.
2. high solid-gas ratio preheating predecomposition cement clinker calcining process according to claim 1, it is characterized in that, described high solid-gas ratio preheater (1) is made up of the whirlwind heat exchanger of the above parallel arranged of 2 row, each is listed as uppermost whirlwind heat exchanger and forms first module, each is listed as nethermost whirlwind heat exchanger and forms the most last unit, the airflow route of every row whirlwind heat exchanger is a series system, cement slurry is from each unitary first row whirlwind heat exchanger beginning, carry out heat exchange with useless flue gas, go through all over the first row whirlwind heat exchanger that enters next unit behind each row.
3. high solid-gas ratio preheating predecomposition cement clinker calcining process according to claim 2 is characterized in that, the unit number that described whirlwind heat exchanger is formed is 2～6 grades.
4. high solid-gas ratio preheating predecomposition cement clinker calcining process according to claim 2 is characterized in that described high solid-gas ratio preheater (1) is made up of the whirlwind heat exchanger of 2 or 3 row parallel arranged.
5. high solid-gas ratio preheating predecomposition cement clinker calcining process according to claim 1, it is characterized in that, described outer circulation type high solid-gas ratio decomposing furnace (2) comprises decomposing furnace body (21), the outlet of decomposing furnace body (21) is communicated with cyclone separator (22), the discharge port of cyclone separator (22) is communicated with first tremie pipe (222) by the first discharging cone (221), cyclone separator (22) also is communicated with whirlwind tube (23), and the discharge port of whirlwind tube (23) is communicated with second tremie pipe (232) by the second discharging cone (231).
6. high solid-gas ratio preheating predecomposition cement clinker calcining process according to claim 5 is characterized in that, the first discharging air valve (223) is set on described first tremie pipe (222), and the second discharging air valve (233) is set on second tremie pipe (232).
7. high solid-gas ratio preheating predecomposition cement clinker calcining process according to claim 1 or 5 is characterized in that the interior gas sectional wind velocity of described outer circulation type high solid-gas ratio decomposing furnace (2) is in 5～10 meter per second scopes.
8. high solid-gas ratio preheating predecomposition cement clinker calcining process according to claim 1, it is characterized in that, described hot flue gas is from the rotary kiln tail, when temperature is reduced to the discharge system by the highest about 900 ℃ 250～350 ℃, the calcining temperature of rotary kiln (3) is 1300～1450 ℃, and cooler (4) is cooled to 60 ℃ with material.
9. a high solid-gas ratio preheating predecomposition burning clinker of cement equipment is characterized in that, comprises
High solid-gas ratio preheater (1), whirlwind heat exchanger by the above parallel arranged of 2 row is formed, each is listed as uppermost whirlwind heat exchanger and forms first module, each is listed as nethermost whirlwind heat exchanger and forms the most last unit, the airflow route of every row whirlwind heat exchanger is a series system, cement slurry carries out heat exchange from each unitary first row whirlwind heat exchanger beginning with useless flue gas, goes through all over the first row whirlwind heat exchanger that enters next unit behind each row;
Outer circulation type high solid-gas ratio decomposing furnace (2), comprise decomposing furnace body (21), the outlet of decomposing furnace body (21) is communicated with cyclone separator (22), the discharge port of cyclone separator (22) is communicated with first tremie pipe (222) by the first discharging cone (221), cyclone separator (22) also is communicated with whirlwind tube (23), and the discharge port of whirlwind tube (23) is communicated with second tremie pipe (232) by the second discharging cone (231);
The whirlwind heat exchanger inlet of last row of final stage of high solid-gas ratio preheater (1) links with the outlet of decomposing furnace body (21).
10. suspended state outer circulation type high solid-gas ratio decomposition reactor according to claim 9 is characterized in that, described decomposing furnace body (21) connects two cyclone separators (22).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110070270 CN102219409A (en) | 2011-03-24 | 2011-03-24 | Calcining process and equipment for preheating and pre-decomposing cement clinker in high-solid-gas ratio |
| PCT/CN2012/072821 WO2012126387A1 (en) | 2011-03-24 | 2012-03-22 | Process and apparatus for calcining cement clinker with pre-heating and pre-decomposition at high solid-to-gas ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110070270 CN102219409A (en) | 2011-03-24 | 2011-03-24 | Calcining process and equipment for preheating and pre-decomposing cement clinker in high-solid-gas ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102219409A true CN102219409A (en) | 2011-10-19 |
Family
ID=44776152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110070270 Pending CN102219409A (en) | 2011-03-24 | 2011-03-24 | Calcining process and equipment for preheating and pre-decomposing cement clinker in high-solid-gas ratio |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102219409A (en) |
| WO (1) | WO2012126387A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012126387A1 (en) * | 2011-03-24 | 2012-09-27 | 西安建筑科技大学 | Process and apparatus for calcining cement clinker with pre-heating and pre-decomposition at high solid-to-gas ratio |
| WO2012126389A1 (en) * | 2011-03-24 | 2012-09-27 | 西安建筑科技大学 | External-circulation decomposition reactor with high solid-gas ratio using horizontal cyclone cylinder |
| CN102923979A (en) * | 2012-10-19 | 2013-02-13 | 安徽海螺建材设计研究院 | Clinker production line for novel dry process cement kiln and denitration process method for clinker production line |
| CN103588399A (en) * | 2013-11-19 | 2014-02-19 | 南京工业大学 | Cement predecomposition kiln |
| CN104583148A (en) * | 2012-07-04 | 2015-04-29 | 蒂森克虏伯工业解决方案股份公司 | Method and system for producing cement clinker from raw cement mixture |
| CN106152793A (en) * | 2015-04-05 | 2016-11-23 | 南京凯盛国际工程有限公司 | High solid-gas ratio preheater with pre-burner and pre-heating mean thereof |
| CN108947285A (en) * | 2018-08-03 | 2018-12-07 | 吴超 | The new method of the spiral flow fluidized circulation Rapid Heating-up Burning of Cement Clinker of bulky grain |
| CN110510894A (en) * | 2019-10-09 | 2019-11-29 | 南京凯盛国际工程有限公司 | A kind of precalcining system for cement produced with the dry method production |
| CN112844003A (en) * | 2019-11-28 | 2021-05-28 | 中国科学院工程热物理研究所 | Multistage suspension preheater, control method and control method of cement clinker generation equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112225477A (en) * | 2020-09-14 | 2021-01-15 | 广西华润红水河水泥有限公司 | Method for treating landfill leachate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415926A (en) * | 2002-11-11 | 2003-05-07 | 西安建筑科技大学 | Heat treatment equipment for powdery material in crossed feed influents with high ration between solid and gas |
| CN1618761A (en) * | 2003-11-17 | 2005-05-25 | 成都建筑材料工业设计研究院有限公司 | New type wet grinding dry burning technology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2583102Y (en) * | 2002-11-26 | 2003-10-29 | 西安建筑科技大学 | Outside kiln circulation device used for cement green stock high temperature preheating and decomposition |
| CN102219409A (en) * | 2011-03-24 | 2011-10-19 | 西安建筑科技大学 | Calcining process and equipment for preheating and pre-decomposing cement clinker in high-solid-gas ratio |
-
2011
- 2011-03-24 CN CN 201110070270 patent/CN102219409A/en active Pending
-
2012
- 2012-03-22 WO PCT/CN2012/072821 patent/WO2012126387A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415926A (en) * | 2002-11-11 | 2003-05-07 | 西安建筑科技大学 | Heat treatment equipment for powdery material in crossed feed influents with high ration between solid and gas |
| CN1618761A (en) * | 2003-11-17 | 2005-05-25 | 成都建筑材料工业设计研究院有限公司 | New type wet grinding dry burning technology |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012126387A1 (en) * | 2011-03-24 | 2012-09-27 | 西安建筑科技大学 | Process and apparatus for calcining cement clinker with pre-heating and pre-decomposition at high solid-to-gas ratio |
| WO2012126389A1 (en) * | 2011-03-24 | 2012-09-27 | 西安建筑科技大学 | External-circulation decomposition reactor with high solid-gas ratio using horizontal cyclone cylinder |
| CN104583148A (en) * | 2012-07-04 | 2015-04-29 | 蒂森克虏伯工业解决方案股份公司 | Method and system for producing cement clinker from raw cement mixture |
| CN104583148B (en) * | 2012-07-04 | 2016-10-19 | 蒂森克虏伯工业解决方案股份公司 | The method and system of clinker is produced from cement slurry mixture |
| US9630879B2 (en) | 2012-07-04 | 2017-04-25 | Thyssenkrupp Industrial Solutions Ag | Method and system for producing cement clinker from raw cement mixture |
| CN102923979A (en) * | 2012-10-19 | 2013-02-13 | 安徽海螺建材设计研究院 | Clinker production line for novel dry process cement kiln and denitration process method for clinker production line |
| CN102923979B (en) * | 2012-10-19 | 2014-07-23 | 安徽海螺建材设计研究院 | Clinker production line for novel dry process cement kiln and denitration process method for clinker production line |
| CN103588399A (en) * | 2013-11-19 | 2014-02-19 | 南京工业大学 | Cement predecomposition kiln |
| CN106152793A (en) * | 2015-04-05 | 2016-11-23 | 南京凯盛国际工程有限公司 | High solid-gas ratio preheater with pre-burner and pre-heating mean thereof |
| CN108947285A (en) * | 2018-08-03 | 2018-12-07 | 吴超 | The new method of the spiral flow fluidized circulation Rapid Heating-up Burning of Cement Clinker of bulky grain |
| CN110510894A (en) * | 2019-10-09 | 2019-11-29 | 南京凯盛国际工程有限公司 | A kind of precalcining system for cement produced with the dry method production |
| CN112844003A (en) * | 2019-11-28 | 2021-05-28 | 中国科学院工程热物理研究所 | Multistage suspension preheater, control method and control method of cement clinker generation equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012126387A8 (en) | 2012-11-22 |
| WO2012126387A1 (en) | 2012-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102219409A (en) | Calcining process and equipment for preheating and pre-decomposing cement clinker in high-solid-gas ratio | |
| CN101792276B (en) | Method for producing partial full-oxygen type cement suitable for separation and collection of CO2 | |
| CN106892578A (en) | A kind of full recovery CO2Lime kiln device | |
| CN102875036B (en) | Heat storage type lime rotary kiln | |
| CN101475324A (en) | Technological process for producing cement clinker by dry burning carbide slag | |
| CN103708515B (en) | A kind of is that raw material adopts predecomposition explained hereafter α-Al with aluminium hydroxide 2o 3method | |
| CN103193400B (en) | Temperature-controllsuspension suspension roaster | |
| CN103373822A (en) | Light calcined magnesia powder calcination device | |
| CN109020265A (en) | A kind of air high temperature preheating technique raising light-calcined magnesite product high yield method | |
| CN207079173U (en) | A kind of full recovery CO2 lime kiln device | |
| WO2021026714A1 (en) | Cement pre-calciner kiln system and method for preparing cement clinker | |
| CN112393597A (en) | Cement firing system and method based on pure oxygen combustion | |
| CN212669567U (en) | Powder lime calcining and reforming system based on novel dry-process cement clinker calcining system | |
| CN207738664U (en) | A kind of limestone calcination device | |
| CN109836060A (en) | A kind of powdered lime calcining and decomposing preparation system | |
| CN111825350B (en) | Device with light burned magnesia preparation and carbon dioxide collection functions | |
| CN101830646A (en) | Lime calcining method and star-shaped kiln device | |
| CN105236772B (en) | A kind of shaft furnace partition rotary kiln combined unit | |
| CN104833203B (en) | A kind of heat accumulating type installation for calcining cement | |
| CN103175398B (en) | A kind of precalcining system firing heavy oil New Type Dry-process Cement Production | |
| CN203212470U (en) | Temperature-controllable suspension roaster | |
| CN102219411A (en) | External circulating decomposition reactor of high sold-gas ratio using horizontal cyclone | |
| CN208700591U (en) | A kind of aluminium oxide joint roasting system | |
| CN112010332A (en) | Aluminum oxide clinker preparation system and process flow thereof | |
| CN204265644U (en) | Heat storage type lime rotary kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111019 |