CN202691996U - A pure medium temperature waste heat boiler at the tail end of a cement kiln - Google Patents
A pure medium temperature waste heat boiler at the tail end of a cement kiln Download PDFInfo
- Publication number
- CN202691996U CN202691996U CN2012201673594U CN201220167359U CN202691996U CN 202691996 U CN202691996 U CN 202691996U CN 2012201673594 U CN2012201673594 U CN 2012201673594U CN 201220167359 U CN201220167359 U CN 201220167359U CN 202691996 U CN202691996 U CN 202691996U
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- Prior art keywords
- drum
- outer shell
- superheater
- header
- cement kiln
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- 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
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- 239000004568 cement Substances 0.000 title claims abstract description 19
- 239000002918 waste heat Substances 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003546 flue gas Substances 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 239000000779 smoke Substances 0.000 claims abstract description 6
- 238000007664 blowing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000004071 soot Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002912 waste gas Substances 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 7
- 230000008676 import Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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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
- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A pure medium temperature waste heat boiler at the tail of a cement kiln is characterized in that the lower part of an I-shaped outer shell is a frame-type furnace wall, the upper part of the outer shell is provided with a membrane type water-cooling wall, and the upper end and the lower end of the water-cooling wall are respectively provided with an upper collecting box and a lower collecting box. The upper end and the lower end of the outer shell are respectively provided with an inlet smoke hood and an outlet smoke hood. A drum is arranged near the top of the outer shell. The furnace chamber in the outer shell is sequentially provided with a coal economizer, an evaporator and a superheater from bottom to top, and the upper end and the lower end of the furnace chamber are respectively provided with an upper collecting box and a lower collecting box. The heating surfaces in the outer shell are provided with ash removing mechanisms, the superheater and the upper layer evaporator close to the flue gas inlet are provided with steam ash blowing mechanisms, and the other heating surfaces are provided with mechanical rapping mechanisms. The utility model discloses simple structure, can guarantee good heat transfer effect, furthest retrieve waste gas heat, boiler efficiency height, can effectively clear away the heating surface deposition and be applicable to the pure medium temperature waste heat recovery of cement kiln tail that has three, level four pre-heaters.
Description
Technical field
The utility model relates to a kind of waste heat boiler, particularly with three, the pure middle temperature waste heat boiler of cement kiln tail of level Four preheater.
Background technology
In recent years, the kiln waste heat without additional fuel for power generation technology has obtained broad development, and therefore the cement kiln overall energy consumption has also had significant decline.For pure low-temperature cogeneration, the new type nonaqueous cement production line of identical output is no matter be with the level Four preheater or with the cement kiln of Pyatyi preheater, the exhausted air quantity of its kiln hood grate-cooler and EGT and it makes no odds.But for cement kiln tail, because the difference of preheater progression causes kiln tail gas amount and exhaust gas parameters to have significant difference.For example with three, the cement kiln tail EGT of level Four preheater is all more than 380 ℃, have in addition up to 500～600 ℃, and Pyatyi preheater outlet EGT is usually about 350 ℃; In addition, three, level Four preheater outlet exhaust gas and dust alkali metal content is high, caking property is also strong, causes at heating surface that dust stratification stops up easilier, corrosion heated surface bundle etc.At present in the prior art, the conventional pure low temperature exhaust heat boiler of cement kiln tail (being called for short the SP stove) is vertical U-shaped boiler, adopt Natural Circulation, by the import and export petticoat pipe at perimeter frame formula furnace wall, midfeather, top and bottom turn to flue form together two be interconnected to flow through shaft.Flue gas is respectively organized the coiled pipe heating surface along boiler internal that flow through shaft " is gone out on enterprising " to flow through.To flow through shaft inside, flue gas washes away time middle superheater, evaporimeter and the economizer of pressing from top to bottom successively at entrance side; By turning to flue, change the flow of flue gas direction, so at outlet side to flow through shaft inside, flue gas washes away low-pressure superheater, evaporimeter and economizer from bottom to top successively.In addition, conventional SP stove, for preventing each fouling of heating surface, all the mechanical rapping cleaning dust mode is adopted in the heating surface unification.In view of above-mentioned arrangement, conventional SP stove carries out three, will there be following problem in the recovery of level Four preheater outlet flue gas if adopt: 1. the U-shaped layout of boiler, floor space is larger, and need to change the flow of flue gas direction, thereby increased the steam generator system resistance, increased tail exhaust blower live load and operation energy consumption; Even can cause the import petticoat pipe to be inhaled the major accident of distortion because negative pressure is excessive; 2. heating surface quantity is many, and the metal consumable quantity is large, when having increased boiler manufacturing, mounting cost, has also improved boiler erection height and difficulty of construction; 3. there is the defective that sealing is poor, the system air leakage amount is large in the frame-type furnace wall; 4. simple mechanical rapping cleaning dust mode is poor for the stronger dust stratification cleaning effect of caking property, easily stops up; 5. fouling of heating surface can reduce heat transfer efficiency, finally causes boiler output deficiency etc.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, can guarantee good heat-transfer effect, to reclaim waste-gas heat, boiler efficiency to greatest extent high, can effectively remove fouling of heating surface and be applicable to three, the pure middle temperature waste heat boiler of cement kiln tail of level Four preheater.
The utility model mainly includes shell body, superheater, evaporimeter, economizer and drum.Wherein, shell body is the I font, shell body top is provided with fin panel casing on four sides, this fin panel casing is all linked together through fin with the pipe of fin by a plurality of adjacent, both sides and consists of, the upper/lower terminal of this water-cooling wall is respectively equipped with the upper and lower header that links to each other with water-cooling wall pipe upper/lower terminal, and the shell body bottom is the frame-type furnace wall.Above-mentioned shell body upper/lower terminal is respectively equipped with the import and export petticoat pipe corresponding with it.Near above-mentioned shell body top, be provided with drum.Furnace chamber in the shell body is provided with economizer, evaporimeter and superheater from the bottom to top successively, and their upper/lower terminal is respectively equipped with upper and lower header.Wherein, the lower header of economizer links to each other with cooling water inlet, and the upper collecting chamber of this economizer links to each other with drum by supply line.Evaporimeter lower header above the economizer links to each other with drum by down-comer, and the upper collecting chamber of this evaporimeter links to each other with drum by tedge.Superheater lower header above the evaporimeter links to each other with drum by the steam fairlead, and the upper collecting chamber of this superheater links to each other with the main steam header road by main vapour header.Other has the water-cooling wall lower header to link to each other with drum by down-comer, and the upper collecting chamber of water-cooling wall links to each other with drum by tedge.
Each heating surface in above-mentioned shell body is equipped with ash removing mechanism in addition, because with three, the cement kiln exit gas of level Four pre-heating system has the advantages that dust concentration is large, caking property is stronger, the superheater and the upper strata evaporimeter that are preferably near smoke inlet are provided with steam soot blowing mechanism, can effectively solve heating surface wear and dust stratification problem; And on all the other heating surfaces, because flue-gas temperature reduces, the caking property of ash descends, and preferably is provided with mechanical vibrator mechanism, and deashing is easy, and is effective.
The course of work of the present utility model is roughly as follows: enter in the furnace chamber through the import petticoat pipe from the middle temperature flue gas of cement kiln tail three, level Four preheater outlet (less than 650 ℃ more than or equal to 350 ℃), according to its top-down order of flowing through, carry out exchange heat with superheater, evaporimeter, economizer tube bank successively, finally drawn by the outlet petticoat pipe of bottom.Cold water then is introduced into the economizer in the furnace chamber, after preheating, send into drum, water in the drum enters respectively again fin panel casing and evaporimeter, turn back to drum by their outlet headers steam water interface out, steam water interface carries out entering superheater after carbonated drink is separated in drum, the steam of superheater of flowing through is sent through live steam piping after reaching specified steam parameter.
The utility model compared with prior art has following advantage:
(1) high-temperature part at smoke inlet arranges fin panel casing, can improve the air-tightness of burner hearth, reduces the Air Leakage Into Boilers amount, reduces heat loss, improves boiler efficiency;
(2) above-mentioned water-cooling wall has larger heat convection area, can effectively reduce the heating surface metal consumption, thereby reduces installation height and the difficulty of construction of boiler;
(3) replace the part furnace wall with water-cooling wall, when simplifying furnace wall structure, alleviating furnace wall weight, can reclaim fast the middle temperature waste-gas heat of cement kiln tail three, the discharge of level Four preheater, effectively prevent ash erosion;
(4) water-cooling wall in blocks is transported to the scene and also can realizes rapid-assembling;
(5) by the combined type purge mode of " high temperature blows grey low temperature rapping ", can effectively remove and respectively organize fouling of heating surface, keep higher heat transfer coefficient, improve generating capacity;
(6) the utility model adopts the most succinct I word structure, when effectively reducing the whole flue gas resistance of boiler, and the advantage such as with simple in structure, floor space is little, and investment and maintenance cost are low.
Description of drawings
Fig. 1 is that the utility model master looks the section simplified schematic diagram.
The specific embodiment
Master at the pure middle temperature waste heat boiler of cement kiln tail shown in Figure 1 looks in the section simplified schematic diagram, shell body is the I font, shell body top is provided with fin panel casing 1 on four sides, the upper/lower terminal of this water-cooling wall is respectively equipped with upper collecting chamber 2 and the lower header 3 that links to each other with water-cooling wall pipe upper/lower terminal, and the shell body bottom is frame-type furnace wall 4.Above-mentioned shell body upper/lower terminal is respectively equipped with the import petticoat pipe corresponding with it 5 and outlet petticoat pipe 6.Near above-mentioned shell body top, be provided with drum 7.Furnace chamber in the shell body is provided with economizer 8, evaporimeter 9 and superheater 10 from the bottom to top successively, and their upper/lower terminal is respectively equipped with upper collecting chamber and lower header.Wherein, the lower header 11 of economizer links to each other with exit of pump, and the upper collecting chamber 12 of this economizer links to each other with drum by supply line 13.Evaporimeter lower header 14 above the economizer links to each other with drum by down-comer 15, and the upper collecting chamber 16 of this evaporimeter links to each other with drum by tedge 17.Superheater lower header 18 above the evaporimeter links to each other with drum by steam fairlead 19, and the upper collecting chamber 20 of this superheater links to each other with steam user pipeline by main vapour header 21.Other has the water-cooling wall lower header to link to each other with drum by down-comer, and the upper collecting chamber of water-cooling wall links to each other with drum by tedge.Be provided with steam soot blowing mechanism 22 at superheater and upper strata evaporimeter near smoke inlet in addition, and on all the other heating surfaces, be provided with mechanical vibrator mechanism 23.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201673594U CN202691996U (en) | 2012-04-19 | 2012-04-19 | A pure medium temperature waste heat boiler at the tail end of a cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201673594U CN202691996U (en) | 2012-04-19 | 2012-04-19 | A pure medium temperature waste heat boiler at the tail end of a cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202691996U true CN202691996U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201673594U Expired - Fee Related CN202691996U (en) | 2012-04-19 | 2012-04-19 | A pure medium temperature waste heat boiler at the tail end of a cement kiln |
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| Country | Link |
|---|---|
| CN (1) | CN202691996U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170230A (en) * | 2013-03-01 | 2013-06-26 | 大连易世达新能源发展股份有限公司 | Selective non-catalytic reduction reaction denitration system for cement kiln |
| CN107654985A (en) * | 2017-10-17 | 2018-02-02 | 安徽海螺川崎节能设备制造有限公司 | A kind of new cement kiln tail waste heat boiler |
| CN107906492A (en) * | 2017-11-28 | 2018-04-13 | 湖南长宏南雁锅炉修理安装有限公司 | Industrial smelting zinc exhaust gas heat recovery boiler |
| CN111649310A (en) * | 2020-06-05 | 2020-09-11 | 河南省锅炉压力容器安全检测研究院 | A waste heat boiler and a high-efficiency recovery power generation system using the waste heat boiler |
| CN112629270A (en) * | 2020-08-28 | 2021-04-09 | 广西鱼峰水泥股份有限公司 | Low-temperature waste heat power generation AQC boiler |
| CN113390073A (en) * | 2021-07-05 | 2021-09-14 | 上海凯盛节能工程技术有限公司 | Novel cement kiln head membrane type water-cooled wall integrated waste heat boiler |
-
2012
- 2012-04-19 CN CN2012201673594U patent/CN202691996U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170230A (en) * | 2013-03-01 | 2013-06-26 | 大连易世达新能源发展股份有限公司 | Selective non-catalytic reduction reaction denitration system for cement kiln |
| CN107654985A (en) * | 2017-10-17 | 2018-02-02 | 安徽海螺川崎节能设备制造有限公司 | A kind of new cement kiln tail waste heat boiler |
| CN107906492A (en) * | 2017-11-28 | 2018-04-13 | 湖南长宏南雁锅炉修理安装有限公司 | Industrial smelting zinc exhaust gas heat recovery boiler |
| CN111649310A (en) * | 2020-06-05 | 2020-09-11 | 河南省锅炉压力容器安全检测研究院 | A waste heat boiler and a high-efficiency recovery power generation system using the waste heat boiler |
| CN112629270A (en) * | 2020-08-28 | 2021-04-09 | 广西鱼峰水泥股份有限公司 | Low-temperature waste heat power generation AQC boiler |
| CN113390073A (en) * | 2021-07-05 | 2021-09-14 | 上海凯盛节能工程技术有限公司 | Novel cement kiln head membrane type water-cooled wall integrated waste heat boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Floor 20, block B, No. 32a, Torch Road, high tech Industrial Park, Dalian, Liaoning Province, 116000 Patentee after: Lida Group Co., Ltd Address before: 116023, B building, No. 32, Torch Road, Dalian hi tech Zone, Liaoning, 18 Patentee before: DALIAN EAST NEW ENERGY DEVELOPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20210419 |
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| CF01 | Termination of patent right due to non-payment of annual fee |