CN103771738B - One utilizes powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln hybrid fuel technology - Google Patents
One utilizes powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln hybrid fuel technology Download PDFInfo
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- CN103771738B CN103771738B CN201410027243.4A CN201410027243A CN103771738B CN 103771738 B CN103771738 B CN 103771738B CN 201410027243 A CN201410027243 A CN 201410027243A CN 103771738 B CN103771738 B CN 103771738B
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- Prior art keywords
- petroleum coke
- coke powder
- rice hulls
- white cement
- powdered rice
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 58
- 235000009566 rice Nutrition 0.000 title claims abstract description 58
- 239000004568 cement Substances 0.000 title claims abstract description 33
- 239000002006 petroleum coke Substances 0.000 title claims abstract description 30
- 239000000446 fuel Substances 0.000 title claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title claims abstract description 10
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 57
- 239000000571 coke Substances 0.000 claims abstract description 30
- 239000010903 husk Substances 0.000 claims abstract description 28
- 239000003380 propellant Substances 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 238000000227 grinding Methods 0.000 claims abstract description 12
- 238000010298 pulverizing process Methods 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000001354 calcination Methods 0.000 abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 7
- 230000001535 kindling effect Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 241000772415 Neovison vison Species 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010237 hybrid technique Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of hybrid fuel technology utilizing powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln, that rice husk is ground into powdered rice hulls in pulverizer, powdered rice hulls after pulverizing sends into propellant combination storehouse after sucking bag filter by the exhaust blower of petroleum coke powder grinding system and entering the petroleum coke powder mixed collection of bag filter simultaneously, then propellant combination is delivered to respectively decomposing furnace and rotary kiln end burner combustion; Purified gas enters air by exhaust blower by chimney.The propellant combination mixing powdered rice hulls and petroleum coke powder can reduce the point of ignition of fuel and burn temperature, and non-complete combustion of fuel phenomenon greatly reduces, and the calcining hear rate of white cement clinker obviously reduces.The high heating value of refinery coke, low-ash feature, be conducive to the sintering of white cement clinker, can avoid the iron pollution that ash content is brought into, to the intensity of white cement and whiteness all very favourable.Pulverizing rice husk can mix in petroleum coke powder and make propellant combination by this technique, is suitable for the white cement clinker calcining of new dry process rotary kiln.
Description
Technical field
The present invention relates to a kind of white cement calcined by rotary kiln hybrid fuel technology, particularly a kind of hybrid fuel technology utilizing powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln.
Background technology
For a long time, China's white cement calcined by rotary kiln white portland cement clinker is fuel used is all bituminous coal, and the vast southern area of China lacks high-quality bituminous coal, but hard coal rich reserves, however hard coal because of ash oontent high, the Fe in ash content
2o
3can have a negative impact to cement whiteness, therefore, white cement calcinating fuel select the difficult problem becoming puzzlement white cement enterprise.
Refinery coke is crude oil through distillation by after separating of oil for weight matter, and mink cell focus is the coke product that is transformed of hot cracked and condensation reaction again.Most refinery cokes all have the feature of calorific value high (usually at more than 34000KJ/Kg), ash oontent low (being less than 1%), high heating value is conducive to the sintering of white cement clinker, and extremely low ash content avoids the iron pollution that ash content brings, therefore refinery coke being used for white cement clinker calcinating fuel is all very favourable to strength of cement or cement whiteness.But there is kindling temperature and burn temperature in oil Jiaozhuo white cement fuel high, the shortcoming that combustionvelocity is slow, combustion conditions in the decomposing furnace of particularly precalciner kiln is poor, raw material will absorb amount of heat in Decomposition of Calcium Carbonate process, very unfavorable to petroleum coke combustion, because exotherm rate is slow, heat absorption speed is fast, causes in-furnace temperature can not meet calcining requirement.
South China area rice husk aboundresources, rice husk has the thermal value of more than 13000kJ/Kg, and kindling temperature is low, combustionvelocity is fast, mix in refinery coke after rice husk is pulverized and make propellant combination and significantly can improve Petroleum Coke Combustion Characteristics, the calcining requirement of cement rotary kiln particularly precalciner kiln can be reached.The invention provides a kind of technique utilizing powdered rice hulls and oil Jiaozhuo white cement calcined by rotary kiln propellant combination, adopt this technique more easily to be mixed in refinery coke by pulverizing rice husk and make propellant combination, be particularly suitable for the white cement clinker calcining of new dry process rotary kiln.
Summary of the invention
The present invention is for white cement calcined by rotary kiln adopts the low-ash refinery coke of high heating value to provide condition, simultaneously for overcoming refinery coke kindling temperature and burning a kind of technique utilizing powdered rice hulls and oil Jiaozhuo white cement calcined by rotary kiln propellant combination that temperature is high, combustionvelocity slow and propose.
The technical solution adopted in the present invention is:
The rice husk be stored in rice husk storehouse feeds rice husk pulverizer and is ground into the fine particle powdered rice hulls being less than 0.8mm after belt scale metering, and the refinery coke be stored in oil coke bin feeds coal mill grinding and tails over to 0.08mm square hole sieve and be less than 1% after belt scale metering.Rice husk pulverizer discharge nozzle access kiln hood petroleum coke powder grinding system, powdered rice hulls after pulverizing is sent in two propellant combination storehouses by worm conveyor or rigidity impeller feeding machine after sucking bag filter by the exhaust blower of petroleum coke powder grinding system and entering the petroleum coke powder mixed collection of bag filter simultaneously, propellant combination is delivered in two spiral pumps via locking wind feeding machine by two bilobed wheels after two rotor weigher meterings respectively, then provides high-pressure blast that propellant combination is delivered to decomposing furnace and rotary kiln end burner combustion respectively by two roots blowers.The material of petroleum coke powder preparation system and rice husk crushing system is pumped and is collected and completed by an air box impulse bagroom and an exhaust blower, and purified gas enters air by exhaust blower by chimney.
Different with the price economy of two kinds of fuel according to petroleum coke combustion character, the per-cent that described powdered rice hulls accounts for powdered rice hulls and petroleum coke fuel total mass is 10% ~ 50%, generally can obtain the effect obviously improving Petroleum Coke Combustion Characteristics when powdered rice hulls volume is 10% ~ 20%.
Rice husk pulverizer of the present invention can be the one in droplet-shaped beater disintegrating machine, hammer type feedstuff crasher and birotor beater disintegrating machine.
Refinery coke grinding machine of the present invention can be the one in vertical mill, ball mill and air swept ball mill.
The invention has the beneficial effects as follows: adopt the iron pollution that refinery coke can avoid ash content to bring into, very favourable to the whiteness of white cement; The high heating value of refinery coke is conducive to the intensity of white cement clinker, can reduce firing rate and mill load simultaneously; Mix the propellant combination that powdered rice hulls and refinery coke make effectively to reduce the point of ignition of fuel and burn temperature, because non-complete combustion of fuel phenomenon greatly reduces, therefore the calcining hear rate of white cement clinker obviously reduces; Rice husk and the petroleum coke powder hybrid technique system of the present invention's design can make the distribution of powdered rice hulls in bagroom reasonable, inhale gentlier therefore more because of powdered rice hulls and drop on dust-precipitator exit end, the powdered rice hulls entering into decomposing furnace fuel bunker is more, and rice husk distribution is relatively less in the kiln hood fuel bunker of dust-precipitator entrance end, this feature and decomposing furnace with turn round the needs of kiln hood to fuel combustion characteristics and adapt.
Accompanying drawing explanation
Fig. 1 is that rice husk of the present invention is pulverized and petroleum coke powder preparation system process flow sheet;
In figure: 1. oil coke bin, 2. weighing belt, 3. refinery coke mill, 4. rice husk storehouse, 5. rice husk pulverizer, 6. bag filter, 7. propellant combination storehouse, 8 rotor weighers, 9. bilobed wheel lock wind feeding machine, 10. roots blower, 11 spiral pumps, 12 exhaust blowers, 13. chimneys, 14. electric butterfly valves.
Embodiment
embodiment 1:
1 be described as follows by reference to the accompanying drawings:
Be stored in refinery coke in oil coke bin (1) by 90% total fuel mass be milled to 0.08mm square hole sieve and tail over than feeding refinery coke grinding machine (3) after weighing belt (2) metering and be less than 1%.Be stored in rice husk in rice husk storehouse (4) by 10% total fuel mass be ground into than feeding rice husk pulverizer (5) after weighing belt (2) metering the powdered rice hulls being less than 0.8mm, rice husk pulverizer discharge nozzle access kiln hood refinery coke grinding system, powdered rice hulls after pulverizing is sent in two propellant combination storehouses (7) by worm conveyor or rigidity impeller feeding machine after sucking bag filter (6) by the exhaust blower (12) of refinery coke grinding system and entering the petroleum coke powder mixed collection of bag filter simultaneously, propellant combination is delivered in two spiral pumps (11) via locking wind feeding machine (9) by bilobed wheel after two rotor weigher (8) meterings respectively, there is provided high-pressure blast that propellant combination is delivered to decomposing furnace and rotary kiln end burner combustion respectively by two roots blowers (10).The material of petroleum coke powder preparation system and rice husk crushing system is pumped and is collected and completed by an air box impulse bagroom and an exhaust blower, and purified gas enters air by exhaust blower (12) by chimney (13).Propellant combination prepared by this embodiment can reduce kindling temperature about 100 DEG C compared with refinery coke, reduces fuel and burns temperature about 80 DEG C, reduces white cement clinker calcining hear rate about 5%.
embodiment 2:
In embodiment 1 the mass ratio of powdered rice hulls and refinery coke is adjusted to 2 ︰ 8 by 1 ︰ 9, other technique and embodiment 1 are together.Compared with petroleum coke fuel, kindling temperature about 120 DEG C can be reduced, reduce fuel and burn temperature about 100 DEG C, reduce white cement clinker calcining hear rate about 10%.
embodiment 3:
In embodiment 1 the mass ratio of powdered rice hulls and refinery coke is adjusted to 3 ︰ 7 by 1 ︰ 9, other technique and embodiment 1 are together.Compared with petroleum coke fuel, kindling temperature about 150 DEG C can be reduced, reduce fuel and burn temperature about 150 DEG C, reduce white cement clinker calcining hear rate about 15%.
Claims (4)
1. utilize powdered rice hulls and oil Jiaozhuo white cement calcined by rotary kiln hybrid fuel technology, it is characterized in that:
The rice husk be stored in rice husk storehouse feeds rice husk pulverizer and is ground into the fine particle powdered rice hulls being less than 0.8mm after belt scale metering, and the refinery coke be stored in oil coke bin feeds refinery coke grinding machine and is milled to 0.08mm square hole sieve and tails over and be less than 1% after belt scale metering; Rice husk pulverizer discharge nozzle access kiln hood petroleum coke powder grinding system, powdered rice hulls after pulverizing is sent in two propellant combination storehouses by worm conveyor or rigidity impeller feeding machine after sucking bag filter by the exhaust blower of petroleum coke powder grinding system and entering the petroleum coke powder mixed collection of bag filter simultaneously, propellant combination is delivered in two spiral pumps via locking wind feeding machine by two bilobed wheels after two rotor weigher meterings respectively, then provides high-pressure blast that propellant combination is delivered to decomposing furnace and rotary kiln end burner combustion respectively by two roots blowers; The material of petroleum coke powder preparation system and rice husk crushing system is pumped and is collected and completed by an air box impulse bagroom and an exhaust blower, and purified gas enters air by exhaust blower by chimney.
2. one according to claim 1 utilizes powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln hybrid fuel technology, it is characterized in that: the per-cent that described powdered rice hulls accounts for powdered rice hulls and refinery coke raw material total mass is 10% ~ 50%.
3. one according to claim 1 utilizes powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln hybrid fuel technology, it is characterized in that: described rice husk pulverizer is the one in droplet-shaped beater disintegrating machine, hammer type feedstuff crasher and birotor beater disintegrating machine.
4. one according to claim 1 utilizes powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln hybrid fuel technology, it is characterized in that: described refinery coke grinding machine is the one in vertical mill, ball mill and air swept ball mill.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410027243.4A CN103771738B (en) | 2014-01-22 | 2014-01-22 | One utilizes powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln hybrid fuel technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410027243.4A CN103771738B (en) | 2014-01-22 | 2014-01-22 | One utilizes powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln hybrid fuel technology |
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| Publication Number | Publication Date |
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| CN103771738A CN103771738A (en) | 2014-05-07 |
| CN103771738B true CN103771738B (en) | 2016-01-20 |
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| CN201410027243.4A Active CN103771738B (en) | 2014-01-22 | 2014-01-22 | One utilizes powdered rice hulls and petroleum coke powder to make white cement calcined by rotary kiln hybrid fuel technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107010856B (en) * | 2017-04-11 | 2019-06-07 | 南昌赣亨行技术开发有限公司 | A kind of petroleum coke fuel sulfur method for dry method cement rotary kiln |
| CN107228355A (en) * | 2017-08-02 | 2017-10-03 | 安徽海螺集团有限责任公司 | A kind of low heat value combustible combustion device and the method for fuel combustion |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215485A (en) * | 2007-11-02 | 2008-07-09 | 吴飞龙 | Fuel for firing into rotary kiln cement clinker |
| CN101948708A (en) * | 2010-10-12 | 2011-01-19 | 张家港华汇特种玻璃有限公司 | Solid fuel composition and application thereof in glass melting |
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- 2014-01-22 CN CN201410027243.4A patent/CN103771738B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215485A (en) * | 2007-11-02 | 2008-07-09 | 吴飞龙 | Fuel for firing into rotary kiln cement clinker |
| CN101948708A (en) * | 2010-10-12 | 2011-01-19 | 张家港华汇特种玻璃有限公司 | Solid fuel composition and application thereof in glass melting |
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| CN103771738A (en) | 2014-05-07 |
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Effective date of registration: 20170306 Address after: 343200 Ji'an City, Jiangxi province Anfu County Industrial Park revitalization Road Patentee after: JIANGXI YINSHAN WHITE CEMENT CO.,LTD. Address before: Weida commercial No. 396 330000 Jiangxi province Nanchang Hongdu North Road 2707 room (twenty-seventh floor) Patentee before: NANCHANG GANHENGXING TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Address after: 343200 beside Revitalization Avenue of Anfu County Industrial Park, Ji'an City, Jiangxi Province Patentee after: JIANGXI YINSHAN WHITE CEMENT Co.,Ltd. Address before: 343200 beside Revitalization Avenue of Anfu County Industrial Park, Ji'an City, Jiangxi Province Patentee before: JIANGXI YINSHAN WHITE CEMENT CO.,LTD. |
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Denomination of invention: Process of calcining mixed fuel in white cement rotary kiln by using rice hull powder and petroleum coke powder Effective date of registration: 20200528 Granted publication date: 20160120 Pledgee: Anfu sub branch of Jiujiang Bank Co.,Ltd. Pledgor: JIANGXI YINSHAN WHITE CEMENT Co.,Ltd. Registration number: Y2020980002593 |
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Date of cancellation: 20210706 Granted publication date: 20160120 Pledgee: Anfu sub branch of Jiujiang Bank Co.,Ltd. Pledgor: JIANGXI YINSHAN WHITE CEMENT Co.,Ltd. Registration number: Y2020980002593 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A process of using rice husk powder and petroleum coke powder as mixed fuel in white cement rotary kiln Effective date of registration: 20210707 Granted publication date: 20160120 Pledgee: Anfu sub branch of Jiujiang Bank Co.,Ltd. Pledgor: JIANGXI YINSHAN WHITE CEMENT Co.,Ltd. Registration number: Y2021990000584 |
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Address after: 343200 beside Revitalization Avenue of Anfu County Industrial Park, Ji'an City, Jiangxi Province Patentee after: Jiangxi Yinshan Supermaterial Technology Co.,Ltd. Country or region after: China Address before: 343200 beside Revitalization Avenue of Anfu County Industrial Park, Ji'an City, Jiangxi Province Patentee before: JIANGXI YINSHAN WHITE CEMENT Co.,Ltd. Country or region before: China |