CN102798110A - Modularized waste heat boiler at kiln tail of cement kiln - Google Patents
Modularized waste heat boiler at kiln tail of cement kiln Download PDFInfo
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- CN102798110A CN102798110A CN2012102445640A CN201210244564A CN102798110A CN 102798110 A CN102798110 A CN 102798110A CN 2012102445640 A CN2012102445640 A CN 2012102445640A CN 201210244564 A CN201210244564 A CN 201210244564A CN 102798110 A CN102798110 A CN 102798110A
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- 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
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Abstract
The invention discloses a modularized waste heat boiler at the kiln tail of a cement kiln, and the modularized waste heat boiler is characterized in that an overheater module, an evaporator module and a coal economizer module are sequentially arranged from a smoke inlet flue to a smoke outlet flue, the modules are same in structure and provided with an independent frame respectively, a heat-insulated protecting plate is arranged around the frame, a ventilation mechanism and a hoisting mechanism are arranged on the frame, and the heating surfaces of the overheater module, the evaporator module and the coal economizer are arranged on the frames in respective housing bodies; and the other end of each of an inlet header and an outlet header which are connected with the heating surfaces of the overheater module, the evaporator module and the coal economizer is arranged outside the housing bodies. The upper components and the lower components are connected, and the upper header and lower header of each module as well as the ascending tube and descending tube of a boiler barrel are connected according to provisions via pipelines. According to the invention, the installation period of the waste heat boiler can be greatly shortened, the labour cost can be saved, and installation expense can be greatly decreased; the welding quality can be controlled well, and the service life of the boiler can be prolonged; and damages on the heating surfaces of the boiler during a transportation process can be furthest avoided.
Description
Technical field
The present invention relates to a kind of waste heat boiler, particularly cement kiln tail waste heat boiler.
Background technology
Since the Eleventh Five-Year Plan, according to the requirement of national energy-saving and emission-reduction policy, the cement kiln tail cogeneration technology has obtained extensively popularizing, and therefore the cement kiln overall energy consumption has also had decline significantly.In cement kiln waste heat power plant construction process, the manufacturing installation cost of waste heat boiler accounts for the 30%-40% of waste heat power station totle drilling cost; The construction period in cement kiln waste heat power station is generally at 6-8 month at present, and wherein waste heat boiler adopts loose mail delivery, field erected mode, and installation period is 5-6 month, needs the lot of manpower and material resources support simultaneously.The on-the-spot flow of installation of the main heating surface of waste heat boiler is at present: the first step, with heating surface erecting by overhang installation in position; Second step is with heating surface import and export collection case hoisted in position; The 3rd step, ground check combination tube panel; The 4th step, the lifting tube panel; The 5th step, the assembling welding of the assembling of tube panel and erecting by overhang and tube panel and import and export collection case.Carry out a large amount of welding operations under tens of needs even tens welders working environment in the open in the above installation steps, the welding job amount is big, and the welding difficulty is higher, and welding quality is difficult to control.Waste heat boiler is the nucleus equipment in the cement kiln residual heat generating technology; The heat exchange efficiency of boiler directly influences the generating efficiency in waste heat power station, and the installation quality of waste heat boiler has determined the height of boiler efficiency again, owing to be the loose mail arrival; The job site condition is relatively poor; Open work receives the restriction of season and weather conditions again, is easy to cause hidden danger of quality, influences boiler efficiency.
Summary of the invention
The object of the present invention is to provide a kind of cement kiln tail waste heat boiler simple in structure, quick for installation.The present invention mainly is that each assembly with this waste heat boiler manufactures module in advance, and assembled on site is in place from the bottom to top then.
The present invention mainly includes following assembly: steelframe platform, inlet flue duct, superheater module, evaporator module, economizer module, exhaust pass and drum.And on the steelframe platform, be provided with following module successively to the exhanst gas outlet flue: superheater module, evaporator module and economizer module from the smoke inlet flue; These modules can be that a cover is single laminated structure; It can also be the promptly two laminated structures of two covers that link to each other, and the drum corresponding with them is located at the boiler top respectively.Wherein, be provided with the insulation backplate around all identical independently framework that promptly each has of superheater module, evaporator module and economizer modular structure, framework, constitute one section cylindrical outer casing body, preferably backplate is double-deck, fill insulant material between the backplate; Framework is provided with ventilating mechanisms; Also be provided with hoisting mechanism on the framework.The heating surface of superheater, evaporimeter and economizer all is fixed on the framework in the shell body separately; The import and export collection case that links to each other with the heating surface of above-mentioned superheater, evaporimeter and economizer, they all have an end to be located at outside the shell body.For avoid the transportation and hoisting process in, rock each heating surface section of jurisdiction, crimp, is preferably in the section of jurisdiction fixed mechanism is set on the framework.In above-mentioned each module, be equipped with the ash disposal mechanism corresponding in addition with heating surface.Above-mentioned assembly up and down links to each other, and preferably assembly links to each other through expansion mechanism up and down; The upper and lower collection case of each module and the rising of drum all are connected by regulation through pipeline with down-comer.
The course of work of the present invention is roughly following: from the flue gas of cement kiln tail (less than 650 ℃ more than or equal to 350 ℃) in inlet flue duct gets into furnace chamber; Flow through in order superheater, evaporimeter and economizer; High-temperature flue gas and heated surface bundle carry out exchange heat, are drawn by exhaust pass at last.The present invention can be divided into: single boiler and two types in two pressure boilers of pressing.The boiler feedwater of single pressure is introduced into the economizer in the furnace chamber; After preheating, send into drum; Water in the drum gets into evaporimeter again, and the steam water interface that is come out by evaporator outlet collection case turns back to drum, and the saturated vapor that carries out after carbonated drink is separated gets into superheater; After reaching specified steam parameter through the steam of superheater, be sent to steam turbine power generation through main steam line.Two pressure boiler feedwaters get into middle pressure economizer and the low-pressure coal saver in the furnace chamber respectively; Press drum and low pressure drum in after preheating, sending into respectively; Water in the two-stage drum is pressed evaporimeter and low pressure evaporator in getting into respectively again; The steam water interface that is come out by middle pressure evaporimeter and low pressure evaporator outlet collection case turns back to the two-stage drum; Carry out saturated vapor after carbonated drink is separated and press superheater and low-pressure superheater in getting into, reach specified steam parameter through the steam of superheater after, be sent to steam turbine power generation via middle pressure steam live steam piping and low-pressure steam live steam piping respectively.
The present invention compared with prior art has following advantage:
1, the present invention can save labor cost, reduces mounting cost greatly, and expectation can be saved mounting cost about 30%, and developed country and the regional mounting cost relatively more expensive some labours can descend more than 50%;
2, the present invention can shorten construction period significantly, and the duration can shorten to 1 month by 5-6 month of traditional approach, is gone into operation in advance in cement kiln waste heat power station, and cement production enterprise is benefited early;
3, the nucleus equipment of waste heat boiler is that superheater, evaporimeter, economizer body are made in the factory building of workshop, boiler factory; The processing and manufacturing condition is superior relatively; Welding quality is controlled easily; Make the whole workmanship of waste heat boiler improve greatly, this just provides assurance reliably for the long-term safety operation of boiler.
4, the present invention has taked the measure of casing encapsulation, the potential safety hazard of farthest having avoided boiler heating surface in transportation, to be squeezed, to be out of shape and produce with boiler heating surface.
Description of drawings
Fig. 1 is the main simplified schematic diagram of looking of the present invention's (two pressure).
Fig. 2 is the main simplified schematic diagram of looking of the present invention's (single pressure).
Fig. 3 is that the master of module of the present invention looks the section simplified schematic diagram.
The specific embodiment
Embodiment 1
Master at cement kiln tail modularization waste heat boiler (two pressure) shown in Figure 1 looks in the simplified schematic diagram; Be provided with following module from smoke inlet flue 1 successively to exhanst gas outlet flue 2 on the steelframe platform of this waste heat boiler: by press in the pressure superheater module 3, five evaporator module 4 and in press economizer module 5 to form one to overlap; Its through turn to flue 6 with form by low-pressure superheater module 7, two low pressure evaporator modules 8 and low-pressure coal saver module 9 another set of linking to each other become two laminated structures, middle pressure drum 10 and the low pressure drum 11 corresponding with them are located at the boiler top respectively.Above-mentioned assembly up and down all links to each other through expansion mechanism 12, makes this waste heat boiler be the U font and arranges that smoke inlet flue one side is an intermediate pressure section, and exhanst gas outlet flue one side is a low pressure stage.Master in module of the present invention shown in Figure 3 looks in the section simplified schematic diagram; Superheater module, evaporator module and economizer modular structure are all identical; Each have independently framework 13, be provided with double-deck backplate 14 around the framework, constitute one section cylindrical outer casing body; Fill insulant material between the backplate also is provided with manhole 15 on the backplate; Framework is provided with ventilating mechanisms 16 and two pairs of hoisting mechanisms 17.The heating surface 18 of superheater, evaporimeter and economizer all is located on the framework in the shell body separately; The import and export collection case 19,20 that links to each other with the heating surface of above-mentioned superheater, evaporimeter and economizer, they all have an end to be located at outside the shell body.Section of jurisdiction fixed mechanism 21 is set on framework.In above-mentioned each module, be equipped with the ash disposal mechanism 22 corresponding in addition with heating surface.The upper and lower collection case of each module and the rising of drum all are connected by regulation through pipeline with down-comer; As shown in Figure 1; Press economizer inlet header case 23 to link to each other in intermediate pressure section one side, press the outlet collection case 24 of economizer to link to each other with middle pressure drum in this through middle pressure feed pipe 25 with the feedwater water pump.Press the inlet header case 26 of evaporimeter all to link to each other with middle pressure drum in the Pyatyi through middle drops pipe 27, in this Pyatyi the outlet collection case 28 of pressure evaporimeter all through in press riser 29 and link to each other with middle pressure drum.The middle superheater inlet header case 30 of pressing links to each other with middle pressure drum through steam fairlead 31, and the outlet collection case 32 of this superheater links to each other with steam user pipeline.Low pressure stage one side, low-pressure coal saver inlet header case 33 links to each other with the feedwater water pump, and the outlet collection case 34 of this economizer links to each other with the low pressure drum through supply line 35.Two-stage low pressure evaporator inlet header case 36 links to each other with the low pressure drum through low pressure down-comer 37, and the outlet collection case 38 of this two low pressure evaporator links to each other with the low pressure drum through low pressure tedge 39.Low-pressure superheater inlet header case 40 links to each other with the low pressure drum through steam fairlead 41, and the outlet collection case 42 of this superheater is through linking to each other with steam user pipeline.
Embodiment 2
Master at cement kiln tail modularization waste heat boiler shown in Figure 2 (the single pressure) looks in the simplified schematic diagram; Be provided with following module from smoke inlet flue 1 successively to exhanst gas outlet flue 2 on the steelframe platform of this waste heat boiler: superheater module 3, two evaporator module 4 and economizer module 5 one covers are single laminated structure, and the drum 10 corresponding with them is located at the boiler top.Above-mentioned assembly up and down all links to each other through expansion mechanism 12, makes this waste heat boiler be the I font and arranges.Master in module of the present invention shown in Figure 3 looks in the section simplified schematic diagram; Superheater module, evaporator module and economizer modular structure are all identical; Each have independently framework 13; Be provided with the heat insulation backplate 14 of peripheral hardware insulation material around the framework, constitute one section cylindrical outer casing body, also be provided with manhole 15 on the backplate; Framework is provided with ventilating mechanisms 16 and two pairs of hoisting mechanisms 17.The heating surface 18 of superheater, evaporimeter and economizer all is located on the framework in the shell body separately; The import and export collection case 19,20 that links to each other with the heating surface of above-mentioned superheater, evaporimeter and economizer, they all have an end to be located at outside the shell body.Section of jurisdiction fixed mechanism 21 is set on framework.In above-mentioned each module, be equipped with the ash disposal mechanism 22 corresponding in addition with heating surface.The upper and lower collection case of each module and the rising of drum all are connected by regulation through pipeline with down-comer, and be as shown in Figure 2, and economizer inlet header case 23 links to each other with the feedwater water pump, and the outlet collection case 24 of this economizer links to each other with drum through feed pipe 25.Double effect evaporator inlet header case 26 all links to each other with drum through down-comer 27, and the outlet collection case 28 of this double effect evaporator all links to each other with drum through tedge 29.Superheater inlet header case 30 links to each other with drum through steam fairlead 31, and the outlet collection case 32 of this superheater links to each other with steam user pipeline.
Claims (6)
1. cement kiln tail modularization waste heat boiler; It includes following assembly: steelframe platform, inlet flue duct, exhaust pass and drum; It is characterized in that: also be provided with superheater module, evaporator module and economizer module successively from the smoke inlet flue to the exhanst gas outlet flue; Be provided with heat insulation backplate around all identical independently framework that promptly each has of these modular structures, framework, constitute one section cylindrical outer casing body; Framework is provided with hoisting mechanism, and the heating surface of superheater, evaporimeter and economizer all is fixed on the framework in the shell body separately; The import and export collection case that links to each other with the heating surface of above-mentioned superheater, evaporimeter and economizer; They all have an end to be located at outside the shell body; Above-mentioned assembly up and down links to each other, and the import and export collection case of each module and the rising of drum all are connected by regulation through pipeline with down-comer.
2. a kind of cement kiln tail modularization waste heat boiler according to claim 1 is characterized in that: assembly links to each other through expansion mechanism up and down.
3. a kind of cement kiln tail modularization waste heat boiler according to claim 1 and 2 is characterized in that: on superheater, evaporimeter and economizer module frame, the section of jurisdiction fixed mechanism is set.
4. a kind of cement kiln tail modularization waste heat boiler according to claim 3 is characterized in that: in above-mentioned each module, be equipped with the ash disposal mechanism corresponding with heating surface.
5. a kind of cement kiln tail modularization waste heat boiler according to claim 4 is characterized in that: be provided with double-deck backplate, fill insulant material between the backplate around superheater, evaporimeter, the economizer module frame.
6. a kind of cement kiln tail modularization waste heat boiler according to claim 5, it is characterized in that: module frame is provided with ventilating mechanisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102445640A CN102798110A (en) | 2012-07-16 | 2012-07-16 | Modularized waste heat boiler at kiln tail of cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102445640A CN102798110A (en) | 2012-07-16 | 2012-07-16 | Modularized waste heat boiler at kiln tail of cement kiln |
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| Publication Number | Publication Date |
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| CN102798110A true CN102798110A (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102445640A Withdrawn CN102798110A (en) | 2012-07-16 | 2012-07-16 | Modularized waste heat boiler at kiln tail of cement kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033875A (en) * | 2014-06-25 | 2014-09-10 | 常州德峰节能电力工程技术有限公司 | Novel waste heat boiler |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685426A (en) * | 1986-05-05 | 1987-08-11 | The Babcock & Wilcox Company | Modular exhaust gas steam generator with common boiler casing |
| CN100547294C (en) * | 2007-06-07 | 2009-10-07 | 江苏双良锅炉有限公司 | The dry coke quenching residual heat boiler of film type wall sealing |
| CN201593778U (en) * | 2009-12-28 | 2010-09-29 | 抚顺石油机械有限责任公司 | Modularized waste heat boiler |
| CN201599786U (en) * | 2010-01-14 | 2010-10-06 | 中国石油化工集团公司 | Modular structure of heating surface of exhaust-heat boiler in convection segment of heating furnace |
| CN201836870U (en) * | 2010-10-28 | 2011-05-18 | 烟台现代冰轮重工有限公司 | Guard plate assembly for waste heat boiler |
| CN202791938U (en) * | 2012-07-16 | 2013-03-13 | 大连易世达新能源发展股份有限公司 | Modular waste heat boiler at kiln tail of cement kiln |
-
2012
- 2012-07-16 CN CN2012102445640A patent/CN102798110A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685426A (en) * | 1986-05-05 | 1987-08-11 | The Babcock & Wilcox Company | Modular exhaust gas steam generator with common boiler casing |
| CN100547294C (en) * | 2007-06-07 | 2009-10-07 | 江苏双良锅炉有限公司 | The dry coke quenching residual heat boiler of film type wall sealing |
| CN201593778U (en) * | 2009-12-28 | 2010-09-29 | 抚顺石油机械有限责任公司 | Modularized waste heat boiler |
| CN201599786U (en) * | 2010-01-14 | 2010-10-06 | 中国石油化工集团公司 | Modular structure of heating surface of exhaust-heat boiler in convection segment of heating furnace |
| CN201836870U (en) * | 2010-10-28 | 2011-05-18 | 烟台现代冰轮重工有限公司 | Guard plate assembly for waste heat boiler |
| CN202791938U (en) * | 2012-07-16 | 2013-03-13 | 大连易世达新能源发展股份有限公司 | Modular waste heat boiler at kiln tail of cement kiln |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033875A (en) * | 2014-06-25 | 2014-09-10 | 常州德峰节能电力工程技术有限公司 | Novel waste heat boiler |
| CN104033875B (en) * | 2014-06-25 | 2015-07-22 | 常州德峰节能电力工程技术有限公司 | Novel waste heat boiler |
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Application publication date: 20121128 |