CN100449238C - Afterheat electricity generating rotary kiln with five-stage preheating decomposing furnace and its production method - Google Patents
Afterheat electricity generating rotary kiln with five-stage preheating decomposing furnace and its production method Download PDFInfo
- Publication number
- CN100449238C CN100449238C CNB031336663A CN03133666A CN100449238C CN 100449238 C CN100449238 C CN 100449238C CN B031336663 A CNB031336663 A CN B031336663A CN 03133666 A CN03133666 A CN 03133666A CN 100449238 C CN100449238 C CN 100449238C
- Authority
- CN
- China
- Prior art keywords
- rotary kiln
- whirlwind tube
- stage
- decomposition furnace
- tube
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Landscapes
- Furnace Details (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The present invention relates to a device and a technological process thereof for producing cement in a dry-process rotary kiln and generating power by waste heat in production. The present invention has the technical scheme that a second-stage cyclonic cylinder is connected in series with a third-stage cyclonic cylinder by a first-stage cyclonic cylinder through a pipeline; a discharge port of the third-stage cyclonic cylinder is connected with a decomposition furnace which is connected with a fourth-stage cyclonic cylinder and a five-stage cyclonic cylinder through pipelines; a discharge port of the five-stage cyclonic cylinder is connected with a rotary kiln; the first-stage cyclonic cylinder is connected with a waste-heat boiler in a power generating device through pipelines. The present invention provides a device and a technological process thereof for producing cement in a dry-process rotary kiln and generating power by waste heat in production and solves the problems of low production, high heat consumption, easy blocking of baiting pipelines, skinning, etc., of the existing cement manufacturing technique.
Description
One, technical field:
The present invention relates to equipment and process thereof that a kind of dry-process rotory kiln is produced cement and utilized the waste heat in producing to generate electricity.
Two, background technology:
The rotary system of China's existing band cogeneration has two kinds of forms: a kind of is that rotary kiln directly links to each other with waste heat boiler, generates electricity.Another kind is to add two-stage preheater dore furnace device between rotary kiln and waste heat boiler, generates electricity.Above-mentioned two kinds of systems exist because the low-temperature electricity-generating technology does not pass a test, all adopt the high temperature generation technology, this rotary kiln all adopts the hollow kiln, though be to generate electricity, ensure most of electricity consumption of self process system, but the cement output that such system produces is low, and system of poor quality investment is excessive, the hear rate height.A kind of in addition, the five-stage cyclone preheater system that uses in the existing cement industry grog calcination process, generally be that the five-stage whirlwind tube uprightly is composed in series, with rotary kiln when supporting, easily cause the hear rate height of rotary kiln, yield poorly, the cement clinker quality instability, defectives such as running rate is low, and the blanking pipeline of five-stage cyclone preheater itself easily stops up, skinning, and labor strength is big in the operating process, the raw material that come out from five-stage cyclone preheater, resolution ratio has only about 40%, and hear rate is up to 1400kcd/kg.cl.
Three, summary of the invention:
1, goal of the invention: the invention provides equipment and process thereof that a kind of dry-process rotory kiln is produced cement and utilized the waste heat in producing to generate electricity, its purpose is to solve the problem that exists aspects such as cement output is low, hear rate is high, the blanking pipeline easily stops up, skinning to exist in the technology in the existing manufacture of cement.
2, technical scheme:
A kind of cogeneration rotary kiln that has five-stage whirlwind tube and dore furnace, it include five-stage whirlwind letter, preheating decomposition furnace, rotary kiln and the TRT that links to each other by pipeline in waste heat boiler, it is characterized in that: one-level whirlwind tube is cascaded by pipeline and secondary whirlwind tube and three grades of whirlwind tubes, discharging opening at three grades of whirlwind tubes connects preheating decomposition furnace, and preheating decomposition furnace is connected with Category Four cyclone tube, five-stage whirlwind tube successively by pipeline; The discharging opening of five-stage whirlwind tube is connected with rotary kiln; The thermal current that rotary kiln is discharged enters in the preheating decomposition furnace, and one-level whirlwind tube is connected with waste heat boiler in the TRT by pipeline.
A kind of aforesaid production method that has the cogeneration rotary kiln of five-stage whirlwind tube and dore furnace, it is characterized in that: this method is undertaken by following processing step:
A: the lime stone raw material enter the preheating of one-level whirlwind tube;
B: enter secondary whirlwind tube and three grades of whirlwind tubes are proceeded preheating, enter preheating decomposition furnace and carry out predecomposition;
C: the raw material that come out from preheating decomposition furnace enter Category Four cyclone tube and five-stage whirlwind tube continuation heating again;
D: the raw material that come out from the five-stage whirlwind tube enter rotary kiln and burn till;
E: the thermal current that rotary kiln is discharged enters the raw material that preheating decomposition furnace and preheating decomposition furnace get off and carries out heat exchange, and the waste gas that carries out discharging after the heat exchange through preheating decomposition furnace and raw material enters waste heat boiler through one-level whirlwind tube and generates electricity.
3, advantage and effect: the present technique characteristic feature of an invention is to add Pyatyi preheating decomposition furnace device between rotary kiln and waste heat boiler, after this technology is applied to the technological transformation of cogeneration kiln system, it is low to solve the original production system throughput, of poor quality, the high problem of hear rate.Under the condition that does not increase energy consumption, make rotary kiln output improve 1-4 doubly, and improvement generating effect, hear rate is reduced to below the 1000Kcal/kg-cl, solved the problem that aspects such as the blanking pipeline easily stops up, skinning exist, so the present invention becomes the high-temperature residual heat generating rotary system that has novel precal cination technique preheater dore furnace.This technical scheme is that φ 3.5 * 70m band cogeneration rotary system undergoes technological transformation to house property cement plant, Shenyang specification successfully, obtains the good technical effect, makes this system throughput bring up to 40T/H by former 16.5T/H.
Four, description of drawings:
Accompanying drawing 1 is primary structure schematic diagram of the present invention.
Five, the specific embodiment:
The cogeneration rotary kiln that has five-stage whirlwind tube dore furnace, it mainly include five-stage whirlwind tube, preheating decomposition furnace, rotary kiln and the TRT that links to each other by pipeline in waste heat boiler, in accompanying drawing 1, one-level whirlwind tube 1 is cascaded secondary whirlwind tube 2 and three grades of whirlwind tubes 3 by pipeline, discharging opening at three grades of whirlwind tubes 3 connects preheating decomposition furnace 4, and preheating decomposition furnace 4 is being connected with Category Four cyclone tube 5, five-stage whirlwind tube 6 by pipeline; Discharging opening at five-stage whirlwind tube 6 is connected with rotary kiln 7; Be connected with waste heat boiler 8 in the TRT by pipeline at one-level whirlwind tube 1.Left part is TRTs such as chimney, dust-settling compartment among the figure, and waste heat boiler 8 is the part in the TRT.
Have the production method of the cogeneration rotary kiln of five-stage whirlwind tube dore furnace, it is characterized in that: this method is undertaken by following processing step:
The lime stone raw material enter 1 preheating of one-level whirlwind tube, enter secondary whirlwind tube 2 then and three grades of whirlwind tubes 3 are proceeded preheating.The raw material that come out from three grades of whirlwind tubes 3 carry out predecomposition entering preheating decomposition furnace 4, and the raw material that come out from preheating decomposition furnace 4 enter Category Four cyclone tube 5 again and five-stage whirlwind tube 6 continues heating.The raw material that come out from five-stage whirlwind tube 6 enter rotary kiln 7 then and burn till.The thermal current that rotary kiln 7 is discharged enters preheating decomposition furnace 4 and carries out heat exchange with the raw material that preheating decomposition furnace 4 gets off, and reaches the effect of raw material predecomposition, and the output of rotary kiln has improved like this.The waste gas that carries out discharging after the heat exchange through preheating decomposition furnace 4 and raw material enters waste heat boiler 8 and generates electricity, and has so promptly guaranteed the requirement that former waste heat boiler 8 generates electricity, and has increased substantially the output of rotary kiln again.
Claims (2)
1, a kind of cogeneration rotary kiln that has five-stage whirlwind tube and dore furnace, it include five-stage whirlwind tube, preheating decomposition furnace, rotary kiln (7) and the TRT that links to each other by pipeline in waste heat boiler (8), it is characterized in that: one-level whirlwind tube (1) is cascaded by pipeline and secondary whirlwind tube (2) and three grades of whirlwind tubes (3), discharging opening at three grades of whirlwind tubes (3) connects preheating decomposition furnace (4), and preheating decomposition furnace (4) is connected with Category Four cyclone tube (5), five-stage whirlwind tube (6) successively by pipeline; The discharging opening of five-stage whirlwind tube (6) is connected with rotary kiln (7); The thermal current that rotary kiln (7) is discharged enters in the preheating decomposition furnace (4), and one-level whirlwind tube (1) is connected with waste heat boiler (8) in the TRT by pipeline.
2, a kind of production method that has the cogeneration rotary kiln of five-stage whirlwind tube and dore furnace as claimed in claim 1, it is characterized in that: this method is undertaken by following processing step:
A: the lime stone raw material enter one-level whirlwind tube (1) preheating;
B: enter secondary whirlwind tube (2) and three grades of whirlwind tubes (3) are proceeded preheating, enter preheating decomposition furnace (4) and carry out predecomposition;
C: the raw material that come out from preheating decomposition furnace (4) enter Category Four cyclone tube (5) and five-stage whirlwind tube (6) continuation heating again;
D: the raw material that come out from the five-stage whirlwind tube enter rotary kiln (7) and burn till;
E: the thermal current that rotary kiln is discharged enters the raw material that preheating decomposition furnace and preheating decomposition furnace get off and carries out heat exchange, and the waste gas that carries out discharging after the heat exchange through preheating decomposition furnace and raw material enters waste heat boiler (8) through one-level whirlwind tube and generates electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031336663A CN100449238C (en) | 2003-08-12 | 2003-08-12 | Afterheat electricity generating rotary kiln with five-stage preheating decomposing furnace and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031336663A CN100449238C (en) | 2003-08-12 | 2003-08-12 | Afterheat electricity generating rotary kiln with five-stage preheating decomposing furnace and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1487260A CN1487260A (en) | 2004-04-07 |
| CN100449238C true CN100449238C (en) | 2009-01-07 |
Family
ID=34154288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031336663A Expired - Fee Related CN100449238C (en) | 2003-08-12 | 2003-08-12 | Afterheat electricity generating rotary kiln with five-stage preheating decomposing furnace and its production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100449238C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438722A (en) * | 2013-08-29 | 2013-12-11 | 云南省易门县中瑞（集团）建材有限公司 | Combined type low temperature exhaust heat power generation system in dry method cement production lines |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2913611A1 (en) * | 2014-02-28 | 2015-09-02 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Hydraulic-binder rotary-furnace operation |
| CN104016596B (en) * | 2014-05-27 | 2016-02-10 | 石家庄新华能源环保科技股份有限公司 | A kind of rotary kiln with power generation assembly |
| CN107265890A (en) * | 2017-08-09 | 2017-10-20 | 徐州贝克福尔节能环保技术有限公司 | Magnesite light calcined magnesia and dead burned magnesia production line integrated equipment and method |
| CN110642279B (en) * | 2018-06-26 | 2020-10-23 | 尧柏特种水泥技术研发有限公司 | Production method of calcium aluminate for high-performance water treatment agent |
| CN108558239B (en) * | 2018-06-26 | 2021-04-16 | 武汉源锦建材科技有限公司 | Magnesium oxide accurate preparation device and method |
| CN108585555B (en) * | 2018-06-26 | 2021-04-16 | 武汉源锦建材科技有限公司 | Industrial powder clinker homogeneous calcination preparation equipment and preparation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386906A (en) * | 1980-09-22 | 1983-06-07 | F. L. Smidth & Co. | Method for burning granular or pulverous materials and kiln plant thereof |
| US4427377A (en) * | 1980-07-09 | 1984-01-24 | Fives-Cail Babcock | Installation for the dry manufacture of cement |
| JPS6211538A (en) * | 1986-04-15 | 1987-01-20 | Kobe Steel Ltd | Preheating apparatus for powdery raw material of cement provided with waste heat boiler |
| US5698027A (en) * | 1994-03-03 | 1997-12-16 | F. L. Smidth & Co. A/S | Method and plant for manufacturing mineralized portland cement clinker |
| WO2000056678A1 (en) * | 1999-03-19 | 2000-09-28 | Psp Engineering A.S. | A line for clinker burning |
| CN2653409Y (en) * | 2003-08-12 | 2004-11-03 | 沈阳恒星水泥机械有限公司 | Waste heat generation rotary kiln with fire stage preheater decomposing furnace |
-
2003
- 2003-08-12 CN CNB031336663A patent/CN100449238C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4427377A (en) * | 1980-07-09 | 1984-01-24 | Fives-Cail Babcock | Installation for the dry manufacture of cement |
| US4386906A (en) * | 1980-09-22 | 1983-06-07 | F. L. Smidth & Co. | Method for burning granular or pulverous materials and kiln plant thereof |
| JPS6211538A (en) * | 1986-04-15 | 1987-01-20 | Kobe Steel Ltd | Preheating apparatus for powdery raw material of cement provided with waste heat boiler |
| US5698027A (en) * | 1994-03-03 | 1997-12-16 | F. L. Smidth & Co. A/S | Method and plant for manufacturing mineralized portland cement clinker |
| WO2000056678A1 (en) * | 1999-03-19 | 2000-09-28 | Psp Engineering A.S. | A line for clinker burning |
| CN2653409Y (en) * | 2003-08-12 | 2004-11-03 | 沈阳恒星水泥机械有限公司 | Waste heat generation rotary kiln with fire stage preheater decomposing furnace |
Non-Patent Citations (3)
| Title |
|---|
| 五级旋风预热器窑的改造. 王明晓. 水泥，第4期. 2003 * |
| 嫁接分解炉的水泥窑高温余热发电技术. 黄劝根，潘炯. 水泥工程，第5期. 1998 * |
| 小型五级旋风预热器窑的改造. 边明祥，郭德选，谢代强. 水泥，第10期. 2002 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438722A (en) * | 2013-08-29 | 2013-12-11 | 云南省易门县中瑞（集团）建材有限公司 | Combined type low temperature exhaust heat power generation system in dry method cement production lines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1487260A (en) | 2004-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101792276B (en) | Method for producing partial full-oxygen type cement suitable for separation and collection of CO2 | |
| CN201254529Y (en) | Cement clinker calcination system | |
| CN101318632B (en) | Method for decomposing phosphogypsum to produce sulphuric acid and cement with suspended state | |
| CN100449238C (en) | Afterheat electricity generating rotary kiln with five-stage preheating decomposing furnace and its production method | |
| CN112390551B (en) | Adjustable CO retrofitted from off-line decomposing furnace 2 Enriched cement kiln system and method | |
| CN210922156U (en) | Cement predecomposition kiln system | |
| CN102219409A (en) | Calcining process and equipment for preheating and pre-decomposing cement clinker in high-solid-gas ratio | |
| CN103708515A (en) | Method for producing alpha-Al2O3 by employing predecomposition technology and taking aluminium hydrogen as raw material | |
| CN110170239A (en) | A kind of system and method for realizing green denitration using dry technology for production | |
| CN212669567U (en) | Powder lime calcining and reforming system based on novel dry-process cement clinker calcining system | |
| CN115073024A (en) | Device and process for preparing active magnesium oxide dry-process light-burning section | |
| CN212610308U (en) | Cement clinker firing production line capable of improving waste gas waste heat utilization rate | |
| CN2653409Y (en) | Waste heat generation rotary kiln with fire stage preheater decomposing furnace | |
| CN200993533Y (en) | Circulating wind pure medium-low temperature residual heat generating system for cement kiln cinder cooling machine | |
| CN113307522A (en) | Device and method for producing II type anhydrous gypsum by using industrial byproduct gypsum | |
| WO2021026713A1 (en) | Adjustable co2 enrichment cement kiln system transformed by in-line decomposition furnace and use method thereof | |
| CN104880092A (en) | Novel dry-method cement kiln preheating and precalcining system and method | |
| CN210127193U (en) | Powdery lime calcining, decomposing and preparing system | |
| CN101492256A (en) | Method for directly burning calcium carbide furnace gas to manufacture lime by using rotary kiln | |
| CN115159876A (en) | Low-energy-consumption carbon capture cement clinker production system and cement clinker preparation method | |
| CN212030203U (en) | High-efficient decomposing furnace | |
| CN110885064B (en) | System and method for producing cement clinker and sulfuric acid by using calcium sulfate | |
| CN210656706U (en) | Preheating and predecomposition system for dry cement production | |
| CN203699937U (en) | System for producing alpha-Al2O3 by adopting predecomposition process by taking hydrogen and aluminum as raw materials | |
| CN214039600U (en) | Kiln tail flue gas waste heat utilization system of cement 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20110812 |