CN203298623U - Cement clinker grate cold machine exhaust gas waste heat recycling and matching waste heat power generation system - Google Patents
Cement clinker grate cold machine exhaust gas waste heat recycling and matching waste heat power generation system Download PDFInfo
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- CN203298623U CN203298623U CN201320265298XU CN201320265298U CN203298623U CN 203298623 U CN203298623 U CN 203298623U CN 201320265298X U CN201320265298X U CN 201320265298XU CN 201320265298 U CN201320265298 U CN 201320265298U CN 203298623 U CN203298623 U CN 203298623U
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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
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- Y02P10/25—Process efficiency
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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
- 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
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Abstract
The utility model provides a cement clinker grate cold machine exhaust gas waste heat recycling and matching waste heat power generation system. The system mainly comprises a cement clinker grate cold machine, a dust collector, a kiln head blower, an air temperature control system, a blower lubricating oil system, a matching waste heat power generation system and the like. According to a waste heat recovery method, the heat of exhaust gas of the grate cold machine is fully utilized so that low-temperature exhaust gas which is exhausted in the air in the past can be used as circulating air to replace a part of normal temperature air and enter the grate cold machine for operation. Therefore, a part of circulating air process to a zero emission process is realized, the waste heat of the exhaust gas is fully utilized, the efficiency of energy utilization is improved, and environmental pollution is reduced.
Description
Technical field
The utility model relates to the cement kiln heat recovery technology, especially relates to clinker cold prevention machine waste gas residual heat and recycles and supporting afterheat generating system, and this exhaust heat recovering method takes full advantage of the cold prevention machine heat, can reach the zero-emission of heat and dust.
Background technology
Cold prevention machine is one of critical host equipment in the grog firing system of cement plant, and its major function is to carry out cooling, conveying fast to going out rotary kiln cement clinker,, simultaneously for rotary kiln and dore furnace etc. provides hot-air, is the capital equipment of firing system recuperation of heat.
In cement production process, clinker enters cold prevention machine, to reach cooling, the purpose of carrying fast.Blower fan blasts normal temperature air, grog is carried out cooling, and the air that was heated by high temperature chamotte is divided into two-way and guides firing system into.One tunnel enters kiln and supplies the kiln fuel combustion as Secondary Air.Mix with kiln gas in the dore furnace bottom through tertiary-air pipe as tertiary air on another road, enters in stove for burning.Some is discharged in atmosphere after dust-precipitator gathers dust as waste gas.
In recent years, be mainly by building supporting Waste Heat Power Station to the utilization of this part waste gas, this part waste gas to be introduced in the waste heat boiler of Waste Heat Power Station, the feedwater in heating boiler, make it be evaporated to steam and enter steam turbine power generation.The waste gas of heat boiler outlet can be down to 90-100 ℃ of left and right.Simultaneously at the about low temperature waste gas of 120 ℃ of the exhaust outlet discharge temperature of cold prevention machine afterbody, this two parts low temperature waste gas carries amount of heat, but has been wasted, and has simultaneously the dust of by dust-precipitator, not collected also to enter in the lump atmosphere, contaminated environment.
A large amount of novel process equipment and production line have been dropped in the cement industry transformation in recent years.Although the energy-conservation emission-reduction technology such as cement kiln residual heat generating is widely used, clinker cold prevention machine waste gas residual heat is recycled and is not obtained sufficient development and utilization, does not realize the zero-emission of heat.
Summary of the invention
The purpose of this utility model is to propose a kind of waste gas residual heat to recycle and supporting afterheat generating system, realizes the waste gas zero-emission of (comprising heat and dust).
In order to realize the purpose of this utility model, the technical scheme of proposition is as follows:
A kind of clinker cold prevention machine waste gas residual heat recycles and supporting afterheat generating system, described system comprises cold prevention machine 1, afterheat generating system 5, cooling blower 2, dust-precipitator 3, kiln head exhaust fan 4, wind-warm syndrome control system 6 and blower fan lubricating oil system 7, circulated air pipeline 11 is installed in outlet at described kiln head exhaust fan 4, and described circulated air pipeline 11 is delivered to cooling blower 2 with the part hot blast and entered the interruption-forming circulation; Near kiln head exhaust fan 4 exits, the first temperature point 8 is installed on described circulated air pipeline 11; Near cooling blower 2 porch, the second temperature point 10 is installed on described circulated air pipeline 11; Enter at kiln head exhaust fan 4 on the pipeline of atmosphere air circulation control valve 13 is installed; Cooling air quantity control valve 9 is installed on cooling air pipeline 12; The wind-warm syndrome signal input wind-warm syndrome control system 6 of described the first temperature point 8 and the second temperature point 10, described control system 6 is regulated described cooling air quantity control valve 9 and air circulation control valve 13 according to the wind-warm syndrome signal controlling of above-mentioned point for measuring temperature, realizes control and regulation circulation wind-warm syndrome.
Described system replaces the part air with described dust-precipitator 3 outlet waste gas as circulated air, joins in the cooling blower 2 of described cold prevention machine 1.
The hot blast that described kiln head exhaust fan 4 is discharged is all sent in cooling blower 2 and is participated in the system heat exchange by the circulated air pipeline; Described volume damper 9 keeps the wind-warm syndrome that enters cooling blower, the protection cooling blower.
The blower fan lubricating oil system 7 of described system is used thin oil lubricants, makes blower fan meet requirement under new operating mode.
The utility model proposes that clinker cold prevention machine waste gas residual heat recycles and a kind of UTILIZATION OF VESIDUAL HEAT IN technology of supporting afterheat generating system, can be with above-mentioned low temperature waste gas as circulated air, the Substitute For Partial normal temperature air enters cold prevention machine work, realizes part circulated air flow process and zero-emission flow process.Improve the system generated energy when native system is simplified system flow, save equipment investment and operating cost; Reduce cold source energy, improve system hot merit conversion efficiency, take full advantage of waste gas residual heat, improve efficiency of energy utilization, environmental contamination reduction.
Description of drawings
Fig. 1 is original clinker cold prevention machine afterheat generating system schematic diagram;
Fig. 2 is the clinker cold prevention machine bootstrap system schematic diagram of the utility model part circulated air.
Fig. 3 is the clinker cold prevention machine bootstrap system schematic diagram of realizing heat and dust zero discharge.
Wherein
1 cold prevention machine 8 first temperature points
2 cooling blower 9 cooling air quantity control valves
3 dust-precipitator 10 second temperature points
4 kiln head exhaust fan 11 circulated air pipelines
5 afterheat generating system 12 cooling air pipelines
6 wind-warm syndrome control system 13 air circulation control valves
7 blower fan lubricating oil systems
The specific embodiment
, for making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with specific embodiments and the drawings, the utility model is further described.
Fig. 1 is original clinker cold prevention machine afterheat generating system schematic diagram; Original system mainly comprises cold prevention machine 1, cooling blower 2, dust-precipitator 3, kiln head exhaust fan 4, afterheat generating system 5 etc.The technological process the earliest of clinker cold prevention machine is that air is sent into cold prevention machine 1 via cooling blower 2, carry out cooling to clinker, waste gas after heating is except as Secondary Air and tertiary air, sending into cement kiln, also has one waste gas to enter dust-precipitator 3 and gathers dust and enter atmosphere by kiln head exhaust fan 4.In this system, quite a few waste gas is discharged in vain, and the heat in waste gas is not utilized, and causes a large amount of wastes of heat.
Prior art is on the basis of above-mentioned flow process, increased an opening on cold prevention machine 1, a part of waste gas is sent into supporting afterheat generating system 5 as generating with wind, most of heat in former waste gas is utilized by afterheat generating system 5, gather dust and enter atmosphere by kiln head exhaust fan 4 but still have the part hot blast to enter dust-precipitator 3 with the form of waste gas, this part heat is not fully used.
Fig. 2 is the clinker cold prevention machine bootstrap system schematic diagram of the utility model part circulated air.On the basis of above-mentioned prior art, native system replaces portion of air with kiln head exhaust fan 4 outlet waste gas as circulated air, join in the cooling blower 2 in cold prevention machine 1 stage casing, clinker temperature in not affecting cold prevention machine 1, do not affect in the situation of Secondary Air and tertiary air temperature, realized that the part of hot blast recycles.
In kiln head exhaust fan 4 outlet, circulated air pipelines 11 are installed, so-called circulated air be exactly thus circulated air pipeline 11 hot blast of 90 ℃ of left and right delivered to cooling blower 2 enter the interruption-forming circulation.Near kiln head exhaust fan 4 exits, the first temperature point 8 is installed on circulated air pipeline 11, near cooling blower 2 porch, the second temperature point 10 is installed on circulated air pipeline 11, kiln head exhaust fan 4 enters on the pipeline of atmosphere installs air circulation control valve 13, cooling air quantity control valve 9 is installed on cooling air pipeline 12, the wind-warm syndrome signal of the first temperature point 8 and the second temperature point 10 enters wind-warm syndrome control system 6, control system is regulated cooling air quantity control valve 9 and air circulation control valve 13 according to the wind-warm syndrome signal controlling, realizes the purpose of control and regulation circulation wind-warm syndrome.
In this system, because the circulated air temperature is higher, can reach more than 80 ℃, the grease lubrication system that original blower fan is equipped with may not meet working condition requirement, this moment is for participating in the new blower fan lubricating oil system 7 of matched with blower of circulation, this lubricating oil system is used thin oil lubricant, makes blower fan meet requirement under new operating mode.
Fig. 3 is the clinker cold prevention machine bootstrap system schematic diagram of realizing heat and dust zero discharge.This system replaces the part air with dust-precipitator 3 outlet waste gas as circulated air, joins in the cooling blower 2 of cold prevention machine 1, and two blower fans of cold prevention machine 1 afterbody still fill into normal temperature air.
In kiln head exhaust fan 4 outlet, circulated air pipelines 11 are installed, so-called circulated air be exactly thus circulated air pipeline 11 hot blast of 90 ℃ of left and right delivered to cooling blower 2 enter the interruption-forming circulation.Near kiln head exhaust fan 4 exits, the first temperature point 8 is installed on circulated air pipeline 11, the second temperature point 10 is installed 2. near cooling blower 2 porch on circulated air pipeline 11, the hot blast that kiln head exhaust fan 4 is discharged is all sent in cooling blower 2 and is participated in the system heat exchange by the circulated air pipeline.The wind-warm syndrome signal that cooling air quantity control valve 9, the first temperature points 8 and the second temperature point 10 are installed on cooling air pipeline 12 enters wind-warm syndrome control system 6, and control system is regulated volume damper 9 according to the wind-warm syndrome signal controlling, realizes the purpose of control and regulation circulation wind-warm syndrome.Volume damper 9 apertures can free adjustment, and aperture strengthens when wind-warm syndrome is too high, sends into cold wind, keeps the wind-warm syndrome that enters cooling blower, the protection cooling blower.
In this system, because the circulated air temperature is higher, can reach more than 80 ℃, the grease lubrication system that original blower fan is equipped with may not meet working condition requirement, so native system is for participating in the new blower fan lubricating oil system 7 of matched with blower of circulation, this lubricating oil system is used thin oil lubricant, makes blower fan meet requirement under new operating mode.
This bootstrap system neither affects the clinker temperature in grate-cooler 1, does not affect again Secondary Air and tertiary air temperature, and has realized the zero-emission of heat.
Clinker cold prevention machine waste gas residual heat recycles and supporting afterheat generating system, belongs to the heat recovery field.This system takes full advantage of the cold prevention machine waste-gas heat, and as circulated air, the Substitute For Partial normal temperature air enters cold prevention machine work with the low temperature waste gas that originally entered atmosphere, realize part circulated air flow process until the zero-emission flow process, take full advantage of waste gas residual heat, improve efficiency of energy utilization, environmental contamination reduction.
The described clinker cold prevention machine of the technical program bootstrap system,, for different cement kiln bootstrap systems, can adopt part circulated air flow process and zero-emission circulated air flow process according to actual conditions, and supporting corresponding afterheat generating system.Following points specifically:
1, owing to having used hot air circulating system, the heat reusable edible that the outlet waste gas of kiln head boiler carries, the boiler export EGT can be designed into 140-150 ℃, adopts single pressing system, improves the system generated energy when simplifying system flow.
2, use conventional atmosphere-type thermodynamic oxygen remover, need not be equipped with chemical deoxidization equipment, the simplification system, save equipment investment and operating cost.
3, adopt the small steam turbine of standard model, the configurable low-pressure heater of system, utilize part exhaust steam heated feed water, reduces cold source energy, improves system hot merit conversion efficiency.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect have been carried out further detailed description; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a clinker cold prevention machine waste gas residual heat recycles and supporting afterheat generating system, described system comprises cold prevention machine (1), cooling blower (2), dust-precipitator (3), kiln head exhaust fan (4), afterheat generating system (5), wind-warm syndrome control system (6) and blower fan lubricating oil system (7), it is characterized in that:
Circulated air pipeline (11) is installed in outlet at described kiln head exhaust fan (4), and so-called circulated air pipeline (11) is delivered to cooling blower (2) with the part hot blast and entered the interruption-forming circulation; Upper near kiln head exhaust fan (4) exit installation the first temperature point (8) at described circulated air pipeline (11); Upper near cooling blower (2) porch installation the second temperature point (10) at described circulated air pipeline (11); Enter at kiln head exhaust fan (4) on the pipeline of atmosphere air circulation control valve (13) is installed; At the upper cooling air quantity control valve (9) of installing of cooling air pipeline (12); The wind-warm syndrome signal input wind-warm syndrome control system (6) of described the first temperature point (8) and the second temperature point (10), described control system (6) is regulated described cooling air quantity control valve (9) and air circulation control valve (13) according to the wind-warm syndrome signal controlling of above-mentioned point for measuring temperature, realizes control and regulation circulation wind-warm syndrome.
2. system according to claim 1 is characterized in that: described system replaces the part air with described dust-precipitator (3) outlet waste gas as circulated air, joins in the cooling blower (2) of described cold prevention machine (1).
3. system according to claim 2 is characterized in that: the hot blast that described kiln head exhaust fan (4) is discharged is all sent into participation system heat exchange in cooling blower (2) by the circulated air pipeline; Described volume damper (9) keeps the wind-warm syndrome that enters cooling blower, the protection cooling blower.
4. system according to claim 3 is characterized in that: the blower fan lubricating oil system (7) of described system is used thin oil lubricant, makes blower fan meet requirement under new operating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320265298XU CN203298623U (en) | 2013-05-16 | 2013-05-16 | Cement clinker grate cold machine exhaust gas waste heat recycling and matching waste heat power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320265298XU CN203298623U (en) | 2013-05-16 | 2013-05-16 | Cement clinker grate cold machine exhaust gas waste heat recycling and matching waste heat power generation system |
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| CN203298623U true CN203298623U (en) | 2013-11-20 |
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| CN201320265298XU Expired - Lifetime CN203298623U (en) | 2013-05-16 | 2013-05-16 | Cement clinker grate cold machine exhaust gas waste heat recycling and matching waste heat power generation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278905A (en) * | 2018-03-22 | 2018-07-13 | 成都建筑材料工业设计研究院有限公司 | A kind of private station boiler and cement kiln waste heat recovery coupled system |
| CN108827004A (en) * | 2018-04-17 | 2018-11-16 | 西安交通大学 | A kind of cement industry kiln hood fume afterheat gradient utilization system and method |
| CN110017694A (en) * | 2019-05-07 | 2019-07-16 | 周红 | A kind of residual heat from kiln furnace cascade utilization device and method |
| CN111380365A (en) * | 2019-01-01 | 2020-07-07 | 将乐金牛水泥有限公司 | Heat energy recycling device of grate cooler |
| EP4137772A1 (en) * | 2021-08-20 | 2023-02-22 | Secil-Companhia Geral de Cal e Cimento S.A. | Energy recovery system for a grate cooler |
-
2013
- 2013-05-16 CN CN201320265298XU patent/CN203298623U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278905A (en) * | 2018-03-22 | 2018-07-13 | 成都建筑材料工业设计研究院有限公司 | A kind of private station boiler and cement kiln waste heat recovery coupled system |
| CN108278905B (en) * | 2018-03-22 | 2024-02-02 | 成都建筑材料工业设计研究院有限公司 | Self-contained power station boiler and cement kiln waste heat recovery coupling system |
| CN108827004A (en) * | 2018-04-17 | 2018-11-16 | 西安交通大学 | A kind of cement industry kiln hood fume afterheat gradient utilization system and method |
| CN111380365A (en) * | 2019-01-01 | 2020-07-07 | 将乐金牛水泥有限公司 | Heat energy recycling device of grate cooler |
| CN110017694A (en) * | 2019-05-07 | 2019-07-16 | 周红 | A kind of residual heat from kiln furnace cascade utilization device and method |
| CN110017694B (en) * | 2019-05-07 | 2024-02-13 | 周红 | Kiln waste heat cascade utilization device and method |
| EP4137772A1 (en) * | 2021-08-20 | 2023-02-22 | Secil-Companhia Geral de Cal e Cimento S.A. | Energy recovery system for a grate cooler |
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Granted publication date: 20131120 |
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