CN103965985A - Biomass fuel anti-coking additive - Google Patents
Biomass fuel anti-coking additive Download PDFInfo
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- CN103965985A CN103965985A CN201310034824.6A CN201310034824A CN103965985A CN 103965985 A CN103965985 A CN 103965985A CN 201310034824 A CN201310034824 A CN 201310034824A CN 103965985 A CN103965985 A CN 103965985A
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Abstract
The invention belongs to the field of renewable energy technology, and discloses a biomass fuel anti-coking additive used to solve the problems of high alkali metal content and easy coking during combustion of straw biomass briquette. The biomass fuel anti-coking additive of the invention is mainly composed of 20-30% of alumina, 15-30% of magnesium carbonate and 40-65% of the calcium oxide; and the usage amount of the additive is 2-8 wt.% of the total biomass raw materials. The biomass fuel anti-coking additive of the invention can increase the ash melting point of the biomass briquette, thus solving the problem of coking of biomass solid briquette in the combustion process and improving the utilization rate of straw fuel.
Description
Technical field
The invention belongs to field of renewable energy technology, particularly disclose a kind of biomass fuel anti-coking additive.
Technical background
China has abundant agricultural straw resource, and along with the raising of life in the countryside level, a large amount of stalks are burned in field, and this has not only wasted biomass energy, has also caused environmental pollution.Agricultural straw resource is prepared into biomass solid formed fuel, can improves biomass resource utilization rate, reduce environmental pollution.Biomass fuel calorific value approaches coal, has the advantages such as the storage of being easy to and transportation, easy to use, clean environment firendly, and the fuel such as alternative coal and oil, more and more receive people's concern in recent years.
But inorganic elements in the biomass fuel that the stalk of take is raw material production (comprising K, Na, S, Ca, Si, P etc.) content is higher, the ash fusion point of fuel is low, cause biomass fuel in combustion processes, to be prone to coking phenomenon, thermal characteristics to combustion equipment impacts, combustion equipment is perishable, reduce heat transfer efficiency, thereby reduce utilization ratio and the efficiency of combustion of fuel.Therefore in stalk biomass process combustion, add anti-coking additive, to reduce coking, improve combustioncharacteristics.
Summary of the invention
The object of the invention is to, for take at present, the ash fusion point of the biomass solid formed fuel that stalk is raw material production is low, cause biomass fuel easily coking in combustion processes, erosive burning equipment, heat transfer efficiency is low, the problem that fuel availability and efficiency of combustion are low, a kind of biomass fuel anti-coking additive is provided, can improve stalk biomass fuel ash fusing point, solve fuel slagging scorification problem in combustion processes, improve fuel availability and efficiency of combustion.
Technical solution of the present invention is:
A kind of biomass fuel anti-coking additive by weight percentage 20～30% aluminum oxide, 15～30% magnesiumcarbonate and 40～65% calcium oxide evenly mixes and forms in drying receptacle, and by adding and use according to 2～8% of biomass material gross weight.
Above-mentioned biomass fuel anti-coking additive by weight percentage 20% aluminum oxide, 15% magnesiumcarbonate and 65% calcium oxide evenly mixes and forms in drying receptacle, and adds and use according to 2% of biomass material gross weight.This anti-coking additive calcium oxide content is the highest, and magnesiumcarbonate content is minimum, and adding proportion is minimum, and anti-coking is general, for the less biomass molding fuel of combustion processes slagging scorification.
Above-mentioned biomass fuel anti-coking additive by weight percentage 25% aluminum oxide, 25% magnesiumcarbonate and 50% calcium oxide evenly mixes and forms in drying receptacle, and adds and use according to 5% of biomass material gross weight.This anti-coking additive calcium oxide content is higher, and magnesiumcarbonate content is lower, and adding proportion is general, and anti-coking is better, for the more biomass molding fuel of combustion processes coking.
Above-mentioned biomass fuel anti-coking additive by weight percentage 30% aluminum oxide 30% magnesiumcarbonate and 40% calcium oxide evenly mixes and forms in drying receptacle, and adds and use according to 8% of biomass material gross weight.This anti-coking additive calcium oxide content is minimum, and magnesiumcarbonate content is the highest, and adding proportion is the highest, and anti-coking is the strongest, for the maximum biomass molding fuel of combustion processes coking.
Above-mentioned biomass fuel anti-coking additive, the mixed granularity of each component is less than 1mm, to guarantee that this anti-coking additive can fully mix with biomass material or can spray into equably roasting kiln with burning air intake.
The beneficial effect that the present invention has is:
The biomass fuel that biomass fuel anti-coking additive of the present invention can be raw material production for the agricultural crop straws such as corn, wheat, paddy rice, cotton, jowar and forestry residuum.Aluminum oxide, magnesiumcarbonate and calcium oxide in anti-coking additive of the present invention in combustion processes can with stalk in the basic metal generation chemical reaction such as silicon, potassium, sodium, produce high-melting-point substances, improved the ash fusion point of whole shaped fuel, therefore in combustion processes, solved coking problem, guarantee the abundant perfect combustion of fuel simultaneously, improved fuel availability and efficiency of combustion.
Embodiment
A kind of biomass fuel anti-coking additive by weight percentage 20～30% aluminum oxide, 15～30% magnesiumcarbonate and 40～65% calcium oxide evenly mixes and forms in drying receptacle, and by adding and use according to 2～8% of biomass material gross weight.
Embodiment 1: the biomass fuel anti-coking additives such as cotton stalk, tamarack
For raw materials such as cotton stalk, tamarackes, contain lower Si element and other alkali metal element, Si content is substantially below 10%, K constituent content is in 4% left and right, after burning, coking rate is lower, this anti-coking additive is mainly used in improving the combustioncharacteristics of shaped fuel, therefore for the anti-coking additive of the biomass fuels such as cotton stalk, tamarack, by the calcium oxide of 20% aluminum oxide, 15% magnesiumcarbonate and 65%, in drying receptacle, evenly mix and form by weight percentage, and add and use according to 2% of biomass material gross weight.After burning, to fuel ash analysis, compare with control group (additive-free), wherein the coking rate of cotton stalk granular fuel drops to 5% by 21%, and ash fusion point reaches 1260 ℃; The coking rate of tamarack stalk granular fuel drops to 1% by 9%, and ash fusion point reaches 1505 ℃.Efficiency of combustion has improved 8% left and right.
Embodiment 2: the biomass fuel anti-coking additives such as straw, rice straw
For raw materials such as straw, rice straws, contain general high Si element and other alkali metal element, Si content is substantially in 20% left and right, K constituent content is in 10% left and right, after burning, coking rate is higher, therefore for the anti-coking additive of the biomass fuels such as straw, rice straw, by the calcium oxide of 25% aluminum oxide, 25% magnesiumcarbonate and 50%, in drying receptacle, evenly mix and form by weight percentage, and add and use according to 5% of biomass material gross weight.After burning, to fuel ash analysis, compare with control group (additive-free), wherein the coking rate of straw granular fuel drops to 11% by 32%, and ash fusion point reaches 1290 ℃; The coking rate of tamarack stalk granular fuel drops to 3% by 22%, and ash fusion point reaches 1340 ℃.Efficiency of combustion has improved 6% left and right.
Embodiment 3: the biomass fuel anti-coking additives such as maize straw, Korean pine
For raw materials such as maize straw, Korean pines, contain higher Si element and other alkali metal element, Si content is substantially in 25% left and right, K constituent content is in 15% left and right, after burning, coking rate is the highest, therefore for the anti-coking additive of the biomass fuels such as maize straw, Korean pine, by the calcium oxide of 30% aluminum oxide, 30% magnesiumcarbonate and 40%, in drying receptacle, evenly mix and form by weight percentage, and add and use according to 8% of biomass material gross weight.After burning, to fuel ash analysis, compare with control group (additive-free), wherein the coking rate of corn stalk pellets fuel drops to 14% by 47%, and ash fusion point reaches 1380 ℃; The coking rate of Korean pine granular fuel drops to 17% by 53%, and ash fusion point reaches 1540 ℃.Efficiency of combustion has improved 6% left and right.
Technical solution of the present invention is not limited to above lifted specific embodiments, also comprises the arbitrary combination between each specific embodiments.
Claims (6)
1. a biomass fuel anti-coking additive, it is characterized in that this anti-slagging additive by weight percentage 20～30% aluminum oxide, 15～30% magnesiumcarbonate and 40～65% calcium oxide in drying receptacle, evenly mix and form, and add and use according to 2～8% of biomass material gross weight.
2. a kind of biomass fuel anti-coking additive according to claim 1, it is characterized in that this anti-coking additive by weight percentage 20% aluminum oxide, 15% magnesiumcarbonate and 65% calcium oxide in drying receptacle, evenly mix and form, and add and use according to 2% of biomass material gross weight.
3. a kind of biomass fuel anti-coking additive according to claim 1, it is characterized in that this anti-coking additive by weight percentage 25% aluminum oxide, 25% magnesiumcarbonate and 50% calcium oxide in drying receptacle, evenly mix and form, and add and use according to 5% of biomass material gross weight.
4. a kind of biomass fuel anti-coking additive according to claim 1, it is characterized in that this anti-coking additive by weight percentage 30% aluminum oxide, 30% magnesiumcarbonate and 40% calcium oxide in drying receptacle, evenly mix and form, and add and use according to 8% of biomass material gross weight.
5. a kind of biomass fuel anti-coking additive according to claim 1, is characterized in that the mixed granularity of this each component of anti-coking additive is less than 1mm.
6. a kind of biomass fuel anti-coking additive according to claim 1, is characterized in that this anti-coking additive can add in biomass fuel preparation process, also can spray into roasting kiln with burning air intake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310034824.6A CN103965985A (en) | 2013-01-30 | 2013-01-30 | Biomass fuel anti-coking additive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310034824.6A CN103965985A (en) | 2013-01-30 | 2013-01-30 | Biomass fuel anti-coking additive |
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| CN103965985A true CN103965985A (en) | 2014-08-06 |
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| CN201310034824.6A Pending CN103965985A (en) | 2013-01-30 | 2013-01-30 | Biomass fuel anti-coking additive |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969454A (en) * | 2016-02-17 | 2016-09-28 | 蚌埠华东石膏有限公司 | Anti-slagging biomass briquette fuel and production method thereof |
| CN105969452A (en) * | 2016-02-17 | 2016-09-28 | 蚌埠华东石膏有限公司 | Firm-structure easy-combustion biomass briquette fuel and production method thereof |
| CN106118785A (en) * | 2016-06-23 | 2016-11-16 | 张庆春 | A kind of combustion-supporting type biomass molding fuel of high security |
| CN106318508A (en) * | 2015-07-02 | 2017-01-11 | 江苏富达秸秆利用有限公司 | Anti-coking straw fuel and preparation method thereof |
| CN106479591A (en) * | 2016-11-01 | 2017-03-08 | 华中科技大学 | A kind of composite additive and its using method for biomass moulding |
| CN106635244A (en) * | 2017-01-18 | 2017-05-10 | 威海翔宇环保科技股份有限公司 | Coking inhibitor for biomass fuel as well as preparation method and application of coking inhibitor |
| CN109576035A (en) * | 2019-01-25 | 2019-04-05 | 雷正强 | A kind of dedicated solid sulphur anticaking agent of biomass granule fuel |
| CN109762621A (en) * | 2019-01-24 | 2019-05-17 | 太原理工大学 | A kind of preparation of biomass fuel calcium based compound additive and its application |
| CN112322369A (en) * | 2020-10-27 | 2021-02-05 | 中国船舶重工集团公司第七一一研究所 | Method for improving combustion slagging of biomass straws |
| GB2622593A (en) * | 2022-09-20 | 2024-03-27 | Mei Bai Hong | Solid biomass fuel anti-coking additive |
-
2013
- 2013-01-30 CN CN201310034824.6A patent/CN103965985A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318508A (en) * | 2015-07-02 | 2017-01-11 | 江苏富达秸秆利用有限公司 | Anti-coking straw fuel and preparation method thereof |
| CN105969454A (en) * | 2016-02-17 | 2016-09-28 | 蚌埠华东石膏有限公司 | Anti-slagging biomass briquette fuel and production method thereof |
| CN105969452A (en) * | 2016-02-17 | 2016-09-28 | 蚌埠华东石膏有限公司 | Firm-structure easy-combustion biomass briquette fuel and production method thereof |
| CN106118785A (en) * | 2016-06-23 | 2016-11-16 | 张庆春 | A kind of combustion-supporting type biomass molding fuel of high security |
| CN106479591A (en) * | 2016-11-01 | 2017-03-08 | 华中科技大学 | A kind of composite additive and its using method for biomass moulding |
| CN106635244A (en) * | 2017-01-18 | 2017-05-10 | 威海翔宇环保科技股份有限公司 | Coking inhibitor for biomass fuel as well as preparation method and application of coking inhibitor |
| CN109762621A (en) * | 2019-01-24 | 2019-05-17 | 太原理工大学 | A kind of preparation of biomass fuel calcium based compound additive and its application |
| CN109576035A (en) * | 2019-01-25 | 2019-04-05 | 雷正强 | A kind of dedicated solid sulphur anticaking agent of biomass granule fuel |
| CN112322369A (en) * | 2020-10-27 | 2021-02-05 | 中国船舶重工集团公司第七一一研究所 | Method for improving combustion slagging of biomass straws |
| GB2622593A (en) * | 2022-09-20 | 2024-03-27 | Mei Bai Hong | Solid biomass fuel anti-coking additive |
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Application publication date: 20140806 |