CN104457289A - Method for improving cement production waste heat power generation capacity - Google Patents
Method for improving cement production waste heat power generation capacity Download PDFInfo
- Publication number
- CN104457289A CN104457289A CN201310435944.7A CN201310435944A CN104457289A CN 104457289 A CN104457289 A CN 104457289A CN 201310435944 A CN201310435944 A CN 201310435944A CN 104457289 A CN104457289 A CN 104457289A
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- China
- Prior art keywords
- cement
- manufacture
- gangue
- cooling blower
- cogeneration
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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
Abstract
The invention discloses a method for improving cement production waste heat power generation capacity and belongs to the technical field of cement production waste heat power generation. The method comprises the following steps that (a) a certain amount of gangue is added to cement raw materials, and the heating capacity of the cement raw materials is improved; (b) the diameter of an impeller of a clinker cooling draught fan is increased by 5% to 10% under the condition that the width is not changed, and a motor of the cooling draught fan is not changed; (c) a water preheating pipeline is additionally arranged at a waste gas outlet of a preheater, and the water preheating pipeline is communicated with a water feeding channel of a power generating boiler. By the adoption of the method, the cement production waste heat power generation capacity can be increased by 8% to 10%, and the comprehensive benefits of cement production can be effectively increased.
Description
Technical field
The present invention relates to a kind of method improving cogeneration, particularly a kind of method improving manufacture of cement cogeneration, belong to manufacture of cement cogeneration technology field.
Background technology
China is manufacture of cement and consumes big country, manufacture of cement belongs to high energy consumption industry, especially China's production Technology comparatively advanced international standard also have a certain distance, cement production consumption is the chief component of the cost of cement production enterprise, for reducing cement production consumption, industry technology and administrative staff adopt and are optimized production technology link in various manners, the waste heat of manufacture of cement is fully utilized, manufacture of cement cogeneration is exactly one of them important measure, manufacture of cement waste heat is many, grog needs cooling before entering mill, heat distributes concentrated, emission is large, cogeneration is one of good UTILIZATION OF VESIDUAL HEAT IN approach, in traditional cogeneration, general employing cooling blower distributes heat in heat-carrying agent and enters boiler of power generation by waste heat generating, this generation mode utilizes the waste heat of manufacture of cement to a certain extent, in the advanced level according to the world relatively, cogeneration utilization rate is also not high, and the low-temperature heat quantity utilization rate of preheater is very low, cogeneration benefit has much room for improvement.
Summary of the invention
For the problem that the benefit overcoming current cement afterheat generation is not high, the invention provides a kind of method improving manufacture of cement cogeneration.
For realizing object of the present invention, the technical solution adopted in the present invention is: a kind of method improving manufacture of cement cogeneration, comprises following methods:
A () adopts and adds a certain amount of gangue in cement ingredient, improve the caloric value of batching;
B (), by the impeller of clinker cooling blower fan when width is constant, diameter lengthens 5-10%, and the motor of cooling blower does not change;
C () increases water preheat pipeline at preheater waste gas outlet, water preheat pipeline communicates with the water inlet of electricity generation boiler, gangue content in described cement ingredient is 2-5%, gangue content in described cement ingredient is 3-5%, gangue content in described cement ingredient is 4%, the impeller of clinker cooling blower fan is when width is constant, diameter lengthens 6-8%, when clinker cooling blower fan original diameter is 640mm, be increased to 680mm, when clinker cooling blower fan original diameter is 700mm, be increased to 750mm.
A kind of Advantageous Effects improving the method for manufacture of cement cogeneration provided by the present invention is adopted to be: the present invention always adds gangue in batching, gangue is the refuse that coal is produced, cheap, be easy to obtain, certain heat energy can be produced in manufacture of cement, increase gangue improves batching caloric value when cost does not increase, contribute to improving the caloric value in grog preparation process, improve cogeneration amount, water preheat pipeline is increased at preheater waste gas outlet, water preheat pipeline communicates with the water inlet of electricity generation boiler, the heat energy from waste gas that can improve preheater utilizes, increase cogeneration amount, the diameter of clinker cooling blower fan is strengthened when other is constant, hot-air circulating rate and quantity can be improved, improve heat transfer effect, increase the generated energy of waste heat boiler.Structure of the present invention is simple, and improvement project is little, can effectively improve cogeneration amount, adopts method of the present invention that manufacture of cement cogeneration amount can be made to improve 8-10%, effectively can improve the comprehensive benefit of manufacture of cement.
Detailed description of the invention
In order to better understand and implement technical scheme of the present invention, provide some embodiments of the present invention at this, these embodiments, in order to better explain technical solutions according to the invention, are not formed any form restriction of the present invention.
Improve a method for manufacture of cement cogeneration, comprise following methods:
A () adopts and adds a certain amount of gangue in cement ingredient, improve the caloric value of batching;
B (), by the impeller of clinker cooling blower fan when width is constant, diameter lengthens 5-10%, and the motor of cooling blower does not change;
C () increases water preheat pipeline at preheater waste gas outlet, water preheat pipeline communicates with the water inlet of electricity generation boiler, gangue content in described cement ingredient is 2-5%, gangue content in described cement ingredient is 3-5%, gangue content in described cement ingredient is 4%, the impeller of clinker cooling blower fan is when width is constant, diameter lengthens 6-8%, when clinker cooling blower fan original diameter is 640mm, be increased to 680mm, when clinker cooling blower fan original diameter is 700mm, be increased to 750mm.In the present invention, the ratio adding gangue in cement ingredient, between 2-5%, through production practices, controls gangue addition and can ensure various performance indications at 4% cement produced, the energy consumption of production process also can not increase, cogeneration benefit can also be made to improve 3-5%, and batching of the present invention can adopt stone 6-7%, gangue 3-5%, flyash 5-6%, gypsum 5-6%, grog more than 40%, all the other adopt slag.Increase more than gangue to 5%, although the caloric value in manufacture of cement can be improved, but there is larger impact to the final performance indications of cement, and discovery system is fired energy consumption and can be increased to some extent, gangue addition is below 2%, the caloric value of manufacture of cement is not significantly improved, the optimization addition considering gangue selects 2-5 to be advisable, gangue addition of the present invention, can adjust in time according to the difference of each factory factory formula, when ensureing cement products final utilization index, rational interpolation gangue effectively can improve the cogeneration amount of manufacture of cement.Adopt the method for the enlarged diameter of clinker cooling blower fan, use in all immovable situation of each critical piece such as blower housing and motor, so the transformation of method on original basis of the raising clinker cooling blower fan diameter of the present invention's employing is not too large, invest little, if improve heat flow effect, also the mode of the blower fan of the larger ability of replacing can be adopted, but this mode needs larger investment, bring larger transformation, produce larger cost, although also object of the present invention can be reached, but net profit can decline to some extent, the technical solution adopted in the present invention just increases the diameter of clinker cooling blower fan, the good effect of two aspects is had after increase, one is that clinker cooling is effect improved, for next step operation provides the condition of high-quality, two are the increase in cogeneration amount, above two aspects can both improve the benefit of manufacture of cement.Adopt and increase water preheat pipeline at preheater waste gas outlet, water preheat pipeline communicates with the water inlet of electricity generation boiler, and the heat energy from waste gas that can improve preheater utilizes, and increases cogeneration amount.The present invention always adds gangue in batching, gangue is the refuse that coal is produced, cheap, be easy to obtain, certain heat energy can be produced in manufacture of cement, increase gangue improves batching caloric value when cost does not increase, contribute to improving the caloric value in grog preparation process, improve cogeneration amount, water preheat pipeline is increased at preheater waste gas outlet, water preheat pipeline communicates with the water inlet of electricity generation boiler, the heat energy from waste gas that can improve preheater utilizes, increase cogeneration amount, the diameter of clinker cooling blower fan is strengthened when other is constant, hot-air circulating rate and quantity can be improved, improve heat transfer effect, increase the generated energy of waste heat boiler.Structure of the present invention is simple, and improvement project is little, can effectively improve cogeneration amount, adopts method provided by the present invention that manufacture of cement cogeneration amount can be made to improve 8-10%, effectively can improve the comprehensive benefit of manufacture of cement.
After describing various specific embodiment of the present invention above in detail, those of ordinary skill in the art should be well understood to, according to the various common practise of this area, can carry out various equivalent variations, equivalent replacement according to thinking of the present invention or simply revise, these all should belong to the scope of technical solution of the present invention.
Claims (6)
1. improve a method for manufacture of cement cogeneration, it is characterized in that: comprise following methods:
A () adopts and adds a certain amount of gangue in cement ingredient, improve the caloric value of batching;
B (), by the impeller of clinker cooling blower fan when width is constant, diameter lengthens 5-10%, and the motor of cooling blower does not change;
C () increases water preheat pipeline at preheater waste gas outlet, water preheat pipeline communicates with the water inlet of electricity generation boiler.
2. a kind of method improving manufacture of cement cogeneration according to claim 1, is characterized in that: the gangue content in described cement ingredient is 2-5%.
3. a kind of method improving manufacture of cement cogeneration according to claim 1, is characterized in that: the gangue content in described cement ingredient is 3-5%.
4. a kind of method improving manufacture of cement cogeneration according to claim 1, is characterized in that: the gangue content in described cement ingredient is 4%.
5. a kind of method improving manufacture of cement cogeneration according to claim 1, is characterized in that: the impeller of clinker cooling blower fan is when width is constant, and diameter lengthens 6-8%.
6. a kind of method improving manufacture of cement cogeneration according to claim 1, is characterized in that: when clinker cooling blower fan original diameter is 640mm, be increased to 680mm, when clinker cooling blower fan original diameter is 700mm, is increased to 750mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435944.7A CN104457289A (en) | 2013-09-24 | 2013-09-24 | Method for improving cement production waste heat power generation capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435944.7A CN104457289A (en) | 2013-09-24 | 2013-09-24 | Method for improving cement production waste heat power generation capacity |
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| CN104457289A true CN104457289A (en) | 2015-03-25 |
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| CN201310435944.7A Pending CN104457289A (en) | 2013-09-24 | 2013-09-24 | Method for improving cement production waste heat power generation capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903752A (en) * | 2016-06-16 | 2016-08-31 | 北京神雾环境能源科技集团股份有限公司 | Household garbage treatment system and method |
-
2013
- 2013-09-24 CN CN201310435944.7A patent/CN104457289A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903752A (en) * | 2016-06-16 | 2016-08-31 | 北京神雾环境能源科技集团股份有限公司 | Household garbage treatment system and method |
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Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |