CN105180167A - Oxygen-enriched-combustion-combined technology and device suitable for novel dry rotary cement kiln - Google Patents
Oxygen-enriched-combustion-combined technology and device suitable for novel dry rotary cement kiln Download PDFInfo
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- CN105180167A CN105180167A CN201510618552.3A CN201510618552A CN105180167A CN 105180167 A CN105180167 A CN 105180167A CN 201510618552 A CN201510618552 A CN 201510618552A CN 105180167 A CN105180167 A CN 105180167A
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- oxygen
- kiln
- oxygenerator
- blower fan
- enrichment
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention relates to the technical field of rotary cement kiln combustion, and discloses an oxygen-enriched-combustion-combined technology and device suitable for a novel dry rotary cement kiln. The technology includes the step that a combined oxygen supply system composed of a high-concentration oxygen enriching and producing device and a low-concentration oxygen enriching and producing device supplies oxygen-enriched air to a kiln-head secondary air inlet, a kiln-head pulverized coal draught fan, a kiln-tail pulverized coal draught fan, a kiln-head inner air draught fan, a kiln-head outer air draught fan and a kiln tail combustor of the novel dry rotary cement kiln. By means of the technology and device, the aims of effectively improving the pulverized coal combustion effect of a kiln head combustor and the pulverized coal combustion effect of the kiln tail combustor and improving the roasting environment in the rotary cement kiln can be achieved, and the adverse factor of insufficient combustion of pulverized coal of a novel dry rotary cement kiln system is overcome.
Description
Technical field
The present invention relates to cement rotary kiln field of combustion technology, more particularly, particularly one is applicable to new type nonaqueous cement rotary kiln associating oxygen-enriched burning process and equipment.
Background technology
The rotary kiln of existing manufacture of cement generally uses normal air, carry out in the outer pre-thermal decomposition of kiln, sinter leaching process respectively, usual combustion process all also exists weak point, ischaemia produces imperfect combustion, flame temperature is on the low side also can produce imperfect combustion, combustible becomes flue dust and drains, and wastes energy and causes atmosphere pollution.For this reason, a kind of follow-on burning process of design and equipment is necessary.
Summary of the invention
One is the object of the present invention is to provide to be applicable to new type nonaqueous cement rotary kiln associating oxygen-enriched burning process and equipment.
In order to solve problem set forth above, the technical solution used in the present invention is: one is applicable to new type nonaqueous cement rotary kiln associating oxygen-enriched burning process, and this technique comprises the association type oxygen system adopting high concentration oxygen enrichment oxygenerator and low concentration oxygen enrichment oxygenerator to form provides oxygen-enriched air to the kiln hood Secondary Air entrance of new type nonaqueous cement rotary kiln, coal powder in kiln head blower fan, kiln tail coal powder fan, the inside and outside wind blower fan of kiln hood and kiln tail burner respectively.
According to a preferred embodiment of the invention: described technique specifically comprises the following steps,
The oxygen-enriched air main pipeline picked out from low concentration oxygen enrichment oxygenerator divides three-way connection (pipe) road to deliver to following three oxygen supply regions respectively:
A) kiln hood Secondary Air entrance;
B) coal mill blower fan is delivered coal powder system;
C) the inside and outside wind blower fan of kiln hood and kiln tail burner;
Meanwhile, the air inlet pipeline front end access high concentration oxygen letter shoot of deliver coal at coal mill blower fan powder system and the inside and outside wind blower fan of kiln hood, this high concentration oxygen letter shoot connects high concentration oxygen enrichment oxygenerator.
According to a preferred embodiment of the invention: the oxygen concentration of described high concentration oxygen enrichment oxygenerator is not less than 80%, the oxygen concentration of described low concentration oxygen enrichment oxygenerator is not higher than 30%.
According to a preferred embodiment of the invention: be also provided with the mixed oxygen tank for regulating oxygen concentration in concrete burning point.
The present invention also provides the equipment realizing above-mentioned technique, comprise high concentration oxygen enrichment oxygenerator, low concentration oxygen enrichment oxygenerator, the first mixed oxygen tank and the second mixed oxygen tank, all mixed with the first oxygen tank of described high concentration oxygen enrichment oxygenerator and low concentration oxygen enrichment oxygenerator, the second mixed oxygen tank are connected, described high concentration oxygen enrichment oxygenerator is also connected with kiln hood Secondary Air entrance, kiln tail burner, described first mixed oxygen tank is connected with kiln tail coal powder fan, coal powder in kiln head blower fan, and the described second mixed oxygen tank is connected with wind blower fan, kiln hood exogenous wind blower fan in kiln hood.
According to a preferred embodiment of the invention: the output of described high concentration oxygen enrichment oxygenerator and low concentration oxygen enrichment oxygenerator is equipped with electrically operated valve.
According to a preferred embodiment of the invention: the output of the described first mixed oxygen tank and the second mixed oxygen tank is equipped with pressure sensor, temperature sensor and oxygen concentration tester.
Compared with prior art, beneficial effect of the present invention is: the invention provides high concentration oxygen enrichment oxygenerator and low concentration oxygen enrichment oxygenerator forms association type oxygen system, oxygen-enriched air is provided respectively to deliver coal wind, the clean wind of kiln hood, kiln hood Secondary Air and kiln tail burner of the kiln head and tail of new type nonaqueous cement production line, the coal dust firing effect effectively increasing kiln hood, kiln tail burner can be reached with this, improve the object of the calcination environment in rotary kiln, overcome the unfavorable factor that new type nonaqueous cement rotary system coal dust firing is insufficient.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the frame diagram being applicable to new type nonaqueous cement rotary kiln associating oxygen-enriched combusting equipment of the present invention.
Description of reference numerals: 1, high concentration oxygen enrichment oxygenerator, 2, low concentration oxygen enrichment oxygenerator, 3, kiln hood Secondary Air entrance, 4, kiln tail coal powder fan, 5, coal powder in kiln head blower fan, 6, wind blower fan in kiln hood, 7, kiln hood exogenous wind blower fan, 8, kiln tail burner, the 9, first mixed oxygen tank, the 10, second mixed oxygen tank.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Consult shown in Fig. 1, the invention provides one and be applicable to new type nonaqueous cement rotary kiln associating oxygen-enriched burning process, this technique comprises the association type oxygen system adopting high concentration oxygen enrichment oxygenerator and low concentration oxygen enrichment oxygenerator to form provides oxygen-enriched air to the kiln hood Secondary Air entrance of new type nonaqueous cement rotary kiln, coal powder in kiln head blower fan, kiln tail coal powder fan, the inside and outside wind blower fan of kiln hood and kiln tail burner respectively.Can reach with this coal dust firing effect effectively increasing kiln hood, kiln tail burner, improve the object of the calcination environment in rotary kiln, overcome the unfavorable factor that new type nonaqueous cement rotary system coal dust firing is insufficient.
Concrete, technique of the present invention specifically comprises the following steps:
The oxygen-enriched air main pipeline picked out from low concentration oxygen enrichment oxygenerator divides three-way connection (pipe) road to deliver to following three oxygen supply regions respectively:
A) kiln hood Secondary Air entrance;
B) coal mill blower fan is delivered coal powder system;
C) the inside and outside wind blower fan of kiln hood and kiln tail burner;
Meanwhile, the air inlet pipeline front end access high concentration oxygen letter shoot of deliver coal at coal mill blower fan powder system and the inside and outside wind blower fan of kiln hood, this high concentration oxygen letter shoot connects high concentration oxygen enrichment oxygenerator.
In the present invention, the oxygen concentration of described high concentration oxygen enrichment oxygenerator is not less than 80%, and the oxygen concentration of described low concentration oxygen enrichment oxygenerator is not higher than 30%.
For the ease of regulating oxygen concentration, the present invention is also also provided with the mixed oxygen tank for regulating oxygen concentration in concrete burning point.
Concrete, in order to realize above-mentioned technique, the present invention also provides a kind of equipment, comprise high concentration oxygen enrichment oxygenerator 1, the mixed oxygen tank of low concentration oxygen enrichment oxygenerator 2, first 9 and the second mixed oxygen tank 10, the mixed oxygen tank 10 of all mixed with the first oxygen tank 9, second of high concentration oxygen enrichment oxygenerator 1 and low concentration oxygen enrichment oxygenerator 2 is connected, high concentration oxygen enrichment oxygenerator 1 is also connected with kiln hood Secondary Air entrance 3, kiln tail burner 8, first mixed oxygen tank 9 is connected with kiln tail coal powder fan 4, coal powder in kiln head blower fan 5, and the second mixed oxygen tank 10 is connected with wind blower fan 6, kiln hood exogenous wind blower fan 7 in kiln hood.
In order to automatically regulate the output quantity of high concentration oxygen enrichment oxygenerator 1 and low concentration oxygen enrichment oxygenerator 2, the present invention is equipped with electrically operated valve at the output of high concentration oxygen enrichment oxygenerator 1 and low concentration oxygen enrichment oxygenerator 2.
In order to exact knowledge pressure, temperature and oxygen concentration, the present invention is equipped with pressure sensor, temperature sensor and oxygen concentration tester at the output of the first mixed oxygen tank 9 and the second mixed oxygen tank 10.
For oxygen supply pattern single in prior art, the invention provides a kind of associating oxygen supply, oxygen supply pattern that concentration is adjustable, high concentration oxygen source is connected by pipeline with low concentration oxygen source, and mixed oxygen tank is also set in concrete burning point (by oxygen point) can air be introduced, adjust the oxygen of safe and reliable concentration further.Simultaneously except to kiln hood burning oxygen supply, also comprise the burning of kiln tail and oxygen enrichment is introduced to rotary kiln combustion atmosphere; Can solve in kiln hood, kiln and the oxygen-enriched combusting problem at kiln tail three place, multiple spot dispersion oxygen supply, combustion efficiency better, more comprehensively, more extensive, safer;
The present invention carries out mixed oxygen at the clean wind of kiln hood (inside and outside wind blower fan) and kiln hood, kiln tail coal wind blower fan place, first oxygen enrichment is accessed blower fan front end, then by regulating the air intake valve opening of blower fan, (in figure, DD is electrically operated valve, DM is manually-operated gate, T is temperature sensor, P is pressure sensor, O
2for oxygen concentration tester), the oxygen in air can be made to mix with oxygen enrichment, be then delivered into kiln hood burner tubes; According to on-the-spot actual needs, likely do not mix with the oxygen in air, and all transport from the ducted oxygen-enriched air of oxygen enrichment.
The present invention adopts two covers (high and low concentration) oxygen rich source, is undertaken combining, mixing by pipeline, realizes convenient, simple.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. be applicable to a new type nonaqueous cement rotary kiln associating oxygen-enriched burning process, it is characterized in that: this technique comprises the association type oxygen system adopting high concentration oxygen enrichment oxygenerator and low concentration oxygen enrichment oxygenerator to form provides oxygen-enriched air to the kiln hood Secondary Air entrance of new type nonaqueous cement rotary kiln, coal powder in kiln head blower fan, kiln tail coal powder fan, the inside and outside wind blower fan of kiln hood and kiln tail burner respectively.
2. oxygen-enriched burning process combined by the new type nonaqueous cement rotary kiln that is applicable to according to claim 1, it is characterized in that: described technique specifically comprises the following steps,
The oxygen-enriched air main pipeline picked out from low concentration oxygen enrichment oxygenerator divides three-way connection (pipe) road to deliver to following three oxygen supply regions respectively:
A) kiln hood Secondary Air entrance;
B) coal mill blower fan is delivered coal powder system;
C) the inside and outside wind blower fan of kiln hood and kiln tail burner;
Meanwhile, the air inlet pipeline front end access high concentration oxygen letter shoot of deliver coal at coal mill blower fan powder system and the inside and outside wind blower fan of kiln hood, this high concentration oxygen letter shoot connects high concentration oxygen enrichment oxygenerator.
3. oxygen-enriched burning process combined by the new type nonaqueous cement rotary kiln that is applicable to according to claim 1, it is characterized in that: the oxygen concentration of described high concentration oxygen enrichment oxygenerator is not less than 80%, the oxygen concentration of described low concentration oxygen enrichment oxygenerator is not higher than 30%.
4. oxygen-enriched burning process combined by the new type nonaqueous cement rotary kiln that is applicable to according to claim 1, it is characterized in that: be also provided with the mixed oxygen tank for regulating oxygen concentration in concrete burning point.
5. realize the equipment of claim 1-4 any one technique, it is characterized in that: comprise high concentration oxygen enrichment oxygenerator (1), low concentration oxygen enrichment oxygenerator (2), first mixed oxygen tank (9) and the second mixed oxygen tank (10), described high concentration oxygen enrichment oxygenerator (1) and low concentration oxygen enrichment oxygenerator (2) be the mixed oxygen tank (9) with first all, second mixed oxygen tank (10) connects, described high concentration oxygen enrichment oxygenerator (1) also with kiln hood Secondary Air entrance (3), kiln tail burner (8) connects, described first mixed oxygen tank (9) and kiln tail coal powder fan (4), coal powder in kiln head blower fan (5) connects, described second mixed oxygen tank (10) and wind blower fan (6) in kiln hood, kiln hood exogenous wind blower fan (7) connects.
6. equipment according to claim 5, is characterized in that: the output of described high concentration oxygen enrichment oxygenerator (1) and low concentration oxygen enrichment oxygenerator (2) is equipped with electrically operated valve.
7. equipment according to claim 5, is characterized in that: the output of the described first mixed oxygen tank (9) and the second mixed oxygen tank (10) is equipped with pressure sensor, temperature sensor and oxygen concentration tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618552.3A CN105180167B (en) | 2015-09-24 | 2015-09-24 | One kind is applied to new type nonaqueous cement rotary kiln joint oxygen-enriched burning process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618552.3A CN105180167B (en) | 2015-09-24 | 2015-09-24 | One kind is applied to new type nonaqueous cement rotary kiln joint oxygen-enriched burning process and equipment |
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| CN105180167A true CN105180167A (en) | 2015-12-23 |
| CN105180167B CN105180167B (en) | 2017-12-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62169907A (en) * | 1986-01-21 | 1987-07-27 | Kawasaki Heavy Ind Ltd | Pulverized coal combustion boiler |
| CN202769700U (en) * | 2012-09-19 | 2013-03-06 | 河南易能达能源科技有限公司 | System utilizing oxygen enrichment as cement sintering primary air and coal air |
| CN103629664A (en) * | 2013-12-05 | 2014-03-12 | 刘国忠 | Multichannel oxygen-enriched combustor used in rotary kiln |
| CN104033893A (en) * | 2014-06-28 | 2014-09-10 | 广西聚为能源科技有限公司 | Oxygen-enriched combustion system of cement klin |
| CN104649600A (en) * | 2014-12-22 | 2015-05-27 | 淄博联创环保科技有限公司 | Rotary cement kiln oxygen-enriched calcining device and rotary cement kiln oxygen-enriched calcining process |
-
2015
- 2015-09-24 CN CN201510618552.3A patent/CN105180167B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62169907A (en) * | 1986-01-21 | 1987-07-27 | Kawasaki Heavy Ind Ltd | Pulverized coal combustion boiler |
| CN202769700U (en) * | 2012-09-19 | 2013-03-06 | 河南易能达能源科技有限公司 | System utilizing oxygen enrichment as cement sintering primary air and coal air |
| CN103629664A (en) * | 2013-12-05 | 2014-03-12 | 刘国忠 | Multichannel oxygen-enriched combustor used in rotary kiln |
| CN104033893A (en) * | 2014-06-28 | 2014-09-10 | 广西聚为能源科技有限公司 | Oxygen-enriched combustion system of cement klin |
| CN104649600A (en) * | 2014-12-22 | 2015-05-27 | 淄博联创环保科技有限公司 | Rotary cement kiln oxygen-enriched calcining device and rotary cement kiln oxygen-enriched calcining process |
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| CN105180167B (en) | 2017-12-08 |
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