CN1236027C - Process for preparing composite biomass briquettes - Google Patents
Process for preparing composite biomass briquettes Download PDFInfo
- Publication number
- CN1236027C CN1236027C CNB011070331A CN01107033A CN1236027C CN 1236027 C CN1236027 C CN 1236027C CN B011070331 A CNB011070331 A CN B011070331A CN 01107033 A CN01107033 A CN 01107033A CN 1236027 C CN1236027 C CN 1236027C
- Authority
- CN
- China
- Prior art keywords
- biomass
- briquettes
- sulphur
- fixing agent
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002028 Biomass Substances 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000003245 coal Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000000460 chlorine Substances 0.000 claims abstract description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000005864 Sulphur Substances 0.000 claims abstract description 3
- 238000007731 hot pressing Methods 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 239000010791 domestic waste Substances 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 235000012204 lemonade/lime carbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 238000013467 fragmentation Methods 0.000 claims 1
- 238000006062 fragmentation reaction Methods 0.000 claims 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical group O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 5
- 239000000779 smoke Substances 0.000 abstract description 4
- 239000010902 straw Substances 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000003077 lignite Substances 0.000 description 4
- 239000004484 Briquette Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002956 ash Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a new process for preparing composite biomass briquettes, which is a manufacturing method for novel briquettes. Raw coal and biomass comprising crop straw, waste of forestry processing, city life refuse and the like are used as raw materials. After the raw materials are crushed and dried, a chlorine fixing agent, a sulphur fixing agent and a combustion improver are added to the raw materials to be evenly mixed, and the briquettes are formed in a heat pressing mode. The composite biomass briquettes have the advantages of high anti-compression strength, low ignition point, high combustion efficiency, low dust exhaustion, no black smoke overflow, less harmful gas discharge, etc. The composite biomass briquettes not only can change abundant waste of biomass resources and the city life refuse in China into benefits, but also can protect the environment; the composite biomass briquettes are suitable for extensive countryside, medium and small-sized towns for civil use and industrial energy sources in China.
Description
One, technical field:
The composite biomass briquettes production technique is with agricultural thing crop straw, forestry processing waste, and domestic waste and coal are the technology that raw material is combined into biomass coal.
Two, background technology:
Biomass be exactly in organism except that mineral fuel, all derive from the renewable material of plant, animal and microorganism.Tellurian biomass resource is very abundant, nearly 1,730 hundred million tons of the annual dry-matter that produces through photosynthesis in the whole world, and China's biomass annual production is more than 50 hundred million tons of dry-matteies, is equivalent to 2.5 times of year power consumption total amount; In addition, the volume of cargo in storage over the years of China's rubbish reaches 6,000,000,000 tons, and the rubbish annual production surpasses 1 hundreds of millions tons, wherein 37.5% be to make the biomass energy that fuel utilizes.The present trans-utilization rate less than 10% of China's biomass energy has over half burnt in vain or discarded in annual nearly 700,000,000 tons of agricultural wastes, not only contaminate environment has also caused huge waste.How efficiently utilizing biomass energy is a problem that urgency is to be solved.Meanwhile, the present annual coal volume of production and marketing of China is more than 1,400,000,000 tons, wherein is unprocessed and direct incendiary has caused the atmosphere coal-smoke pollution more than 84%.According to estimates, the flue dust annual emissions in the present national waste gas reaches more than 1,414 ten thousand tons, SO
2Annual emissions is more than 1,825 ten thousand tons, and wherein 80% comes spontaneous combustion coal, and 40% of China's area is corroded by acid rain, has a strong impact on the environment and the eubiosis, has caused the concern of international community.Therefore, national requirements Industrial Boiler and stove use oligosaprobic moulded coal.Known shaped coal technology all is to be raw material with fine coal, and adding additives forms through mechanical presses, and not only intensity difference, and difficulty catches fire, difficult after-flame, over-emitting black exhaust, big, the SO of dust
2And NO
xQuantity discharged is big, more and more can not satisfy the environmental requirement of increasingly stringent.So development clean moulded coal technology is very urgent.
Three, summary of the invention:
Fa Ming purpose is not the utilization ratio that crop stalk, forestry processing waste, domestic waste and coal is processed into a kind of composite briquette, raising biomass waste, reduce the pollution of the sulfurous gas that causes because of direct burning coal and nitrogen oxide to environment, solved known moulded coal intensity difference simultaneously, difficulty is caught fire, problems such as difficult after-flame and over-emitting black exhaust.
The present invention is achieved by the following technical solutions.
Fig. 1 is a process flow sheet of the present invention.Biomass (as crop stalk, forestry processing waste, domestic waste etc.) and raw coal are directly pulverized, are aided with chlorine-solidifying agent after the drying as raw material, sulphur-fixing agent and ignition dope, through mixing, through the hot-forming finished product moulded coal that promptly obtains, after selecting, the overbreak moulded coal that produces during hot pressing returns mixing again.
Processing condition:
1, the particle size after cracking of biomass and coal is less than 3mm;
2, after biomass and the coal drying water content less than 10% (weight percent);
3, sulphur-fixing agent is calcium oxide, lime carbonate, perhaps adopts compound sulphur-fixing agent, and this compound sulphur-fixing agent comprises that the weight ratio of the add-on control Ca/S of the waste rock ballast that mainly contains calcium oxide, slag, cinder, sulphur-fixing agent is 1～2.5 (sulphur is content in the raw material)
4, chlorine-solidifying agent is a yellow soda ash, and add-on control Na/Cl weight ratio is 1～2 (chlorine is the content in the raw material);
5, ignition dope is Fe
2O
3Or La
0.8Sr
0.9Fe
0.1O
3(claiming LSCF8291), its add-on was 0.15～0.6% of a material quantity;
6, forming pressure is greater than 20Mpa; Hot pressing temperature is less than 160 ℃;
7, in composite biomass briquettes, the proportioning of biomass is 40%～100%.
Compare advantage and positively effect that the present invention has with known technology:
1) ultimate compression strength height, suitable long-distance transport;
2) needn't use binding agent, cost is low;
3) effectively utilize agriculture and forestry organic waste material and domestic refuse, changing waste into resources;
4) easily catch fire, easy to burn out, high performance clean burning;
5) low dust discharge, over-emitting black exhaust, sulfur-fixing rate height, noxious gas emission are not few;
6) ash few, can " bridging " phenomenon not appear in burner hearth, coal ash can fully utilize;
Four, description of drawings: figure is a process flow sheet of the present invention.
Five, embodiment:
Embodiment 1
Proportioning: 40% biomass+60% brown coal add CaO (Ca/S=1.0), Na
2CO
3(Na/Cl=1.0) and account for the Fe of fuel total mass 0.1%
2O
3
Forming pressure: 50Mpa; 140 ℃ of hot pressing temperatures
Moulded coal size: diameter 35mm, long 30mm;
Temperature of combustion: 850 ℃
2) result of implementation
Moulded coal ultimate compression strength＞20Mpa
Point of ignition: 343 ℃, composite briquette calorific value 20198.10Kj/kg;
Burn-off rate=96%, during burning thermal expansion less, can be automatically in the combustion processes broken, flying dust be few, does not observe black smoke;
Sulfur-fixing rate 76%, Gu chlorine rate 70%, discharged nitrous oxides concentration＜100mg.m
-3
Embodiment 2
1) implementation condition
The characteristic of biomass fuel and brown coal is with example 1;
Proportioning: 40% biomass+60% brown coal, with sulphur-fixing agent CaO (Ca/S=2.0), 0.15% LSCF-8291, Na
2CO
3(Na/Cl=2.0);
Forming pressure: 50Mpa; 150 ℃ of hot pressing temperatures
Moulded coal size: diameter 35mm, long 30mm;
Temperature of combustion: 850 ℃;
2) result of implementation
Moulded coal ultimate compression strength＞20Mpa;
Point of ignition: 332 ℃, composite briquette calorific value 20250.06kJ/kg;
Burn-off rate＞95%, lime-ash are not broken, dust emission concentration＜0.85mg.m
-3
Sulfur-fixing rate=87%, Gu chlorine rate 81%, discharged nitrous oxides＜100mg.m
-3
Embodiment 3
1) implementation condition
Proportioning: 60% biomass+40% brown coal, adding compound sulphur-fixing agent (CaO), carbide slag, iron are the fossil thing, Ca/S 〉=1.5), Na
2CO
3(Na/Cl=2.0), 0.2% mixing ignition dope (Fe
2O
3): LSCF-8291=1: 1)
Forming pressure: 50Mpa; 150 ℃ of mold temperatures
Moulded coal size: diameter 35mm, long 30mm;
Temperature of combustion: 850 ℃;
2) result of implementation
Moulded coal ultimate compression strength 〉=22Mpa;
Point of ignition=320 ℃, calorific value 18811.87kJ/kg;
Burn-off rate=97%, dust emission concentration＜0.65mg.m
-3, do not have tangible black smoke to produce; Sulfur-fixing rate=92%, Gu chlorine rate=90%, discharged nitrous oxides is no more than 90mg.m
-3
Claims (1)
1, a kind of composite biomass briquettes production technique, make raw material through fragmentation with biomass and raw coal, be aided with sulphur-fixing agent after the drying, chlorine-solidifying agent and ignition dope also mix, after hot pressing, obtain the finished product moulded coal again, it is characterized in that: described biomass are domestic wastes, its weight percent in raw material is 40%～60%, described sulphur-fixing agent is calcium oxide or lime carbonate, the weight ratio of the add-on control Ca/S of sulphur-fixing agent is 1～2.5, sulphur is the content in the raw material, described chlorine-solidifying agent is a yellow soda ash, add-on control Na/Cl weight ratio is 1～2, and chlorine is the content in the raw material, and described ignition dope is ferric oxide or La
0.8Sr
0.9Fe
0.1O
3, add-on is 0.1～0.6% of a raw material weight, described hot pressing pressure is 50Mpa, 140～150 ℃ of hot pressing temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011070331A CN1236027C (en) | 2001-01-11 | 2001-01-11 | Process for preparing composite biomass briquettes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011070331A CN1236027C (en) | 2001-01-11 | 2001-01-11 | Process for preparing composite biomass briquettes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1309166A CN1309166A (en) | 2001-08-22 |
| CN1236027C true CN1236027C (en) | 2006-01-11 |
Family
ID=4655987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011070331A Expired - Fee Related CN1236027C (en) | 2001-01-11 | 2001-01-11 | Process for preparing composite biomass briquettes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1236027C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100434801C (en) * | 2006-09-22 | 2008-11-19 | 广州广重企业集团有限公司 | Stalks boiler fuel treating method and equipment |
| CN105586103A (en) * | 2015-08-10 | 2016-05-18 | 南开大学 | Application method of composite solid alkali additive in biomass coal preparation |
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-
2001
- 2001-01-11 CN CNB011070331A patent/CN1236027C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434801C (en) * | 2006-09-22 | 2008-11-19 | 广州广重企业集团有限公司 | Stalks boiler fuel treating method and equipment |
| CN105586103A (en) * | 2015-08-10 | 2016-05-18 | 南开大学 | Application method of composite solid alkali additive in biomass coal preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1309166A (en) | 2001-08-22 |
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