CN104212511A - Fuel rod and preparation method thereof - Google Patents
Fuel rod and preparation method thereof Download PDFInfo
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- CN104212511A CN104212511A CN201410438517.9A CN201410438517A CN104212511A CN 104212511 A CN104212511 A CN 104212511A CN 201410438517 A CN201410438517 A CN 201410438517A CN 104212511 A CN104212511 A CN 104212511A
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- fuel stick
- blue charcoal
- mixture
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- sulphur
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- 239000000446 fuel Substances 0.000 title claims abstract description 102
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 48
- 239000002028 Biomass Substances 0.000 claims abstract description 31
- 239000011230 binding agent Substances 0.000 claims abstract description 28
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000011282 treatment Methods 0.000 claims abstract description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003610 charcoal Substances 0.000 claims description 74
- 239000000203 mixture Substances 0.000 claims description 37
- 239000012778 molding material Substances 0.000 claims description 17
- 238000011284 combination treatment Methods 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 10
- 239000004021 humic acid Substances 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 239000005864 Sulphur Substances 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 6
- 239000012286 potassium permanganate Substances 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 18
- 239000003245 coal Substances 0.000 abstract description 11
- 238000002156 mixing Methods 0.000 abstract description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000000440 bentonite Substances 0.000 abstract description 2
- 229910000278 bentonite Inorganic materials 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 238000010411 cooking Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- 239000002994 raw material Substances 0.000 description 12
- 238000007493 shaping process Methods 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 8
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000004484 Briquette Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000000809 air pollutant Substances 0.000 description 6
- 231100001243 air pollutant Toxicity 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- OEYQBKYISMRWQB-UHFFFAOYSA-N Santal Chemical compound C=1C(OC)=CC(O)=C(C2=O)C=1OC=C2C1=CC=C(O)C(O)=C1 OEYQBKYISMRWQB-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000571 coke Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920002907 Guar gum Polymers 0.000 description 2
- 240000003183 Manihot esculenta Species 0.000 description 2
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000000665 guar gum Substances 0.000 description 2
- 229960002154 guar gum Drugs 0.000 description 2
- 235000010417 guar gum Nutrition 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- -1 aromatic hydroxyl carboxyl salt Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a fuel rod and a preparation method thereof. The preparation method comprises the following steps: carrying primary mixing treatment on semi-coke powder, biomass powder, a combustion improver, a sulfur-fixing agent and bentonite to obtain a first mixed material; carrying out secondary mixing treatment on the first mixed material and a binder to obtain a second mixed material; molding the second mixed material by virtue of a looping-model molding machine to obtain a molded material and drying the molded material to obtain the fuel rod. The fuel rod prepared by the method has the characteristics of low volatile components, low content of sulfur and high calorific value and is cheap, and thus the fuel rod can replace the blind coal to be applied in suburban villages or rural areas in winter for heating and cooking so that fog and haze can be significantly reduced and the air quality is effectively improved.
Description
Technical field
The invention belongs to clean fuel field, specifically, the present invention relates to a kind of fuel stick and preparation method thereof.
Background technology
Blue charcoal is one of product of the dry distillation of coal, has that volatile matter is low, fixed carbon is high, thermal value advantages of higher.Blue charcoal is in the state that supply exceed demand at present, and product price glides, and enterprise's production capacity release rate is low, and effectiveness of operation is low, and development is absorbed in depression.Along with blue charcoal block destructive distillation is from now on to the transfer of the face dry distillation of coal, blue charcoal end output also can significantly increase, and adds the blue charcoal end in other areas, all the production for clean moulded coal is furnished ample material.But the shaping difficulty of blue charcoal is comparatively large, this is because the elasticity of blue charcoal is very large, plasticity is very little.Document shows to work as C
dafwhen being greater than 90%, along with the raising of degree of coalification, Young's modulus sharply increases, and shows anisotropy simultaneously.And the C of blue charcoal
dafvery high, mostly more than 90%, thus add shaping difficulty.Plasticity is contrary with elasticity, and plasticity is more large more shaping.
At present, disclosed solid Novel clean-fuel mainly with coal dust (bituminous coal or hard coal), biomass (biological straw) or both mixtures for base-material, allocate the additives such as binding agent, sulphur-fixing agent, ignition dope into, then carry out machine-shaping.With blue charcoal end for the solid cleaning fuel of base-material is less, because the elasticity at blue charcoal end is large, plasticity is little, and shaping difficulty is large.
Patent " CN 103436314 A " discloses " a kind of method utilizing semicoke to prepare fragrant carbon ", the method with semicoke powder and coke powder mixture for base-material, wherein blue charcoal end powder accounts for 70 ~ 80%, coke powder 20 ~ 30%, and the fixed carbon content of semicoke is not less than 60%, and volatile content is 15 ± 1%, in coke, fixed carbon content is greater than 80%, blue charcoal end is crushed to below 3mm, and coke powder is broken to below 1mm, then adds binding agent machine-shaping.But due to coke powder price more expensive, binding agent is self-made binder, and cost is higher, and make its achievements conversion rate low, the difficulty of popularization is large.
Therefore, the clean fuel being raw material with blue charcoal needs to be studied further.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose a kind of fuel stick and preparation method thereof, the fuel stick volatile matter adopting the method to obtain is low, sulphur content is low, thermal value is high, low price, hard coal can be substituted cook for outer suburbs villager or national Rural areas warming, and then obviously reduce haze, thus effectively improve Air quality.
In one aspect of the invention, the present invention proposes a kind of method preparing fuel stick, comprising:
The first combination treatment is carried out, to obtain the first mixture with powdered biomass, ignition dope, sulphur-fixing agent and wilkinite in blue charcoal end;
Described first mixture and binding agent are carried out the second combination treatment, to obtain the second mixture;
Ring mode forming machine is adopted to carry out forming processes, to obtain molding materials to described second mixture; And
Described molding materials is carried out drying treatment, to obtain described fuel stick.
Significantly can improve the formability at blue charcoal end according to the method preparing fuel stick of the embodiment of the present invention by adding powdered biomass and wilkinite in blue charcoal, making this abundance and cheap blue charcoal can be applied to and prepares in fuel area.Simultaneously because blue charcoal has the advantage that volatile matter is low, fixed carbon is high, and by adding sulphur-fixing agent, the quantity discharged of the fuel stick for preparing for raw material with the blue charcoal end dusty gas such as sulfurous gas and oxynitride in combustion can be reduced further, thus significantly reduce haze, effectively improve Air quality, in addition, ring mode forming machine is adopted to carry out forming processes, can significantly improve ultimate compression strength and the fall strength of briquette of molding materials, and output also significantly improves, and energy consumption reduces; And the thermal value of the fuel stick prepared for raw material with blue charcoal can reach more than 26MJ/kg, apparently higher than the fuel prepared for raw material with semicoke and coke etc.Secondly, the method cost preparing fuel stick of the above embodiment of the present invention is low, and technique is simple, is easy to promote.Therefore, the fuel stick adopting the method for the above embodiment of the present invention to prepare can meet now to the active demand of environment-protecting clean fuel, fundamentally provides reliability to help for administering haze.
In addition, the method preparing fuel stick according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, the dry ash-free basis volatile content at described blue charcoal end not higher than 8wt%, total sulphur content not higher than 0.4wt%, thermal value be not less than 5000 kilocalories/kilogram.Thus, the environmental-protecting performance of fuel stick can effectively be improved.
In some embodiments of the invention, be that 1:0.01 ~ 0.05:0.005 ~ 0.01:0.02 ~ 0.06:0.01 ~ 0.03 carry out described first combination treatment with described powdered biomass, described ignition dope, described sulphur-fixing agent and described wilkinite according to mass ratio by described blue charcoal end.Thus, the formability of blue charcoal can obviously be improved.
In some embodiments of the invention, the particle diameter at described blue charcoal end is not higher than 3 millimeters, and the particle diameter of described powdered biomass is not higher than 2 millimeters, and described wilkinite particle diameter is not less than 75 microns.Thus, the formability of blue charcoal can be improved further.
In some embodiments of the invention, described powdered biomass is sawdust or stalk powder, described ignition dope is the mixture containing ferric oxide, sodium-chlor and potassium permanganate, wherein, the mass ratio of described ferric oxide, described sodium-chlor and described potassium permanganate is 2:2:1, and described sulphur-fixing agent is white lime or unslaked lime.Thus, the formability of blue charcoal can be improved further and the quantity discharged of minimizing sulfurous gas and oxynitride.
In some embodiments of the invention, be that described second combination treatment is carried out in 1.045 ~ 1.15:0.05 ~ 0.1 by described first mixture and described binding agent according to mass ratio.Thus, the formability of blue charcoal can be improved further.
In some embodiments of the invention, described binding agent is humic acids binding agent.Thus, the formability of blue charcoal can be improved further.
In another aspect of the present invention, the present invention proposes a kind of fuel stick.According to embodiments of the invention, this fuel stick is prepared by aforesaid method.Thus, this fuel stick volatile matter is low, sulphur content is low, thermal value is high, low price, can substitute hard coal and cook for outer suburbs villager or national Rural areas warming, and then obviously reduce haze, thus effectively improve Air quality.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram preparing fuel stick according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In one aspect of the invention, the present invention proposes a kind of method preparing fuel stick, this comprises:
The first combination treatment is carried out, to obtain the first mixture with powdered biomass, ignition dope, sulphur-fixing agent and wilkinite in blue charcoal end;
First mixture and binding agent are carried out the second combination treatment, to obtain the second mixture;
Ring mode forming machine is adopted to carry out forming processes, to obtain molding materials to described second mixture; And
Molding materials is carried out drying treatment, to obtain fuel stick.
Significantly can improve the formability at blue charcoal end according to the method preparing fuel stick of the embodiment of the present invention by adding powdered biomass and wilkinite in blue charcoal, making this abundance and cheap blue charcoal can be applied to and prepares in fuel area.Simultaneously because blue charcoal has the advantage that volatile matter is low, fixed carbon is high, and by adding sulphur-fixing agent, the quantity discharged of the fuel stick for preparing for raw material with the blue charcoal end dusty gas such as sulfurous gas and oxynitride in combustion can be reduced further, thus significantly reduce haze, effectively improve Air quality, in addition, ring mode forming machine is adopted to carry out forming processes, can significantly improve ultimate compression strength and the fall strength of briquette of molding materials, and output also significantly improves, and energy consumption reduces; And the thermal value of the fuel stick prepared for raw material with blue charcoal can reach more than 26MJ/kg, apparently higher than the fuel prepared for raw material with semicoke and coke etc.Secondly, the method cost preparing fuel stick of the above embodiment of the present invention is low, and technique is simple, is easy to promote.Therefore, the fuel stick adopting the method for the above embodiment of the present invention to prepare can meet now to the active demand of environment-protecting clean fuel, fundamentally provides reliability to help for administering haze.
Below with reference to Fig. 1, the method preparing fuel stick of the embodiment of the present invention is described in detail.According to embodiments of the invention, the method comprises:
S100: the first combination treatment
According to embodiments of the invention, the first combination treatment is carried out with powdered biomass, ignition dope, sulphur-fixing agent and wilkinite in blue charcoal end, thus the first mixture can be obtained.Contriver finds, adopts powdered biomass and wilkinite obviously can improve blue charcoal end formability as forming agent, and this forming agent abundance and cheap, thus fuel stick production cost can be reduced further.
According to embodiments of the invention, the dry ash-free basis volatile content at blue charcoal end not higher than 8wt%, total sulphur content not higher than 0.4wt%, thermal value be not less than 5000 kilocalories/kilogram.Contriver finds, blue charcoal has that volatile matter is low, fixed carbon is high, thermal value is high and the advantage such as cheap, comparatively hard coal or coke are compared and obviously can be reduced raw materials cost to adopt blue charcoal thus, and decreasing pollution gas purging, thus effectively improve Air quality, fuel stick thermal value obtained in addition can reach 26MJ/kg.
According to embodiments of the invention, blue charcoal end is with powdered biomass, ignition dope, sulphur-fixing agent and wilkinite blending ratio and be not particularly limited, according to a particular embodiment of the invention, blue charcoal end can be that 1:0.01 ~ 0.05:0.005 ~ 0.01:0.02 ~ 0.06:0.01 ~ 0.03 mixes according to mass ratio with powdered biomass, ignition dope, sulphur-fixing agent and wilkinite.Contriver finds, if powdered biomass ratio is too high, significantly can increase the volatile matter of fuel stick, cause smoldering during burning, and powdered biomass ratio be too low, can not form continuous print Plastic phase, thus cannot improve the formability of blue charcoal; If ignition dope ratio is too high, cost is significantly increased, and time too high, combustion-supporting effect weakens on the contrary, and ratio is too low, makes combustion-supporting effect not obvious, does not have combustion-supporting effect; If sulphur-fixing agent ratio is too high, significantly can increase the ash content of fuel stick, increase cost, and ratio is too low, captured sulfur result is poor; If bentonite ratio is too high, the ash content of fuel stick can be increased, increase cost, and ratio be too low, not have the effect improving blue charcoal end formability.Thus, select this range scale, significantly can improve the formability at blue charcoal end, and meet environmental requirement.
According to embodiments of the invention, the particle diameter at blue charcoal end is also not particularly limited, and according to a particular embodiment of the invention, the particle diameter at blue charcoal end can not higher than 3 millimeters.Contriver finds, if the particle diameter at blue charcoal end is too high, is unfavorable for subsequent forming.
According to embodiments of the invention, the particular type of powdered biomass is also not particularly limited, and according to a particular embodiment of the invention, powdered biomass can be sawdust or stalk powder.Thus, fuel stick preparation cost can significantly be reduced.
According to embodiments of the invention, the particle diameter of powdered biomass is also not particularly limited, and according to a particular embodiment of the invention, the particle diameter of powdered biomass can not higher than 2 millimeters.Contriver find, if powdered biomass particle diameter is too high, be unfavorable for mixing and shaping.
According to embodiments of the invention, the particular type of ignition dope is also not particularly limited, according to a particular embodiment of the invention, ignition dope can for the mixture containing ferric oxide, sodium-chlor and potassium permanganate, according to concrete example of the present invention, the mass ratio of ferric oxide, sodium-chlor and potassium permanganate can be 2:2:1.Contriver finds, the ignition dope combustion-supporting effect of this proportioning is good and cost is low.
According to embodiments of the invention, the particular type of sulphur-fixing agent is also not particularly limited, and according to a particular embodiment of the invention, sulphur-fixing agent can be white lime or unslaked lime.Thus, can the discharge of remarkable less sulfurous gas and oxynitride, thus the generation of decreasing pollution gas.
According to embodiments of the invention, bentonitic particular type is also not particularly limited, and according to a particular embodiment of the invention, wilkinite can be not less than the technical grade wilkinite of 75 microns for particle diameter.Thus, significantly can improve the formability of blue charcoal and reduce fuel stick preparation cost.
Contriver finds, it is low that blue charcoal has volatile matter, fixed carbon is high, thermal value advantages of higher, blue charcoal is made to have become the desirable feedstock of producing clean fuel rod, and current blue charcoal is in the state that supply exceed demand, make blue charcoal price declines, but blue charcoal elasticity is very large and plasticity is low, make its shaping difficulty larger, and the solid cleaning fuel being base-material with blue charcoal is also little, contriver is surprisingly found by great many of experiments, powdered biomass first can soften rear flow at high temperature under high pressure, form Plastic phase, and wilkinite clay composition forms primarily of hydrophilic mineral, it has obvious water-swelling and dehydration shrinkage performance, therefore, it is possible to reduce the Young's modulus of material, increase ultimate deformation, thus can by blue charcoal end be carried out mixing the formability improving blue charcoal with powdered biomass and wilkinite, and prepare clean fuel rod by interpolation ignition dope and sulphur-fixing agent, reversed the situation that current blue charcoal industrial benefit is low simultaneously, achieve effective utilization of resource.
S200: the second combination treatment
According to embodiments of the invention, the first obtained above mixture and binding agent are carried out the second combination treatment, thus the second mixture can be obtained.Thus, the processability at blue charcoal end can obviously be improved.
According to embodiments of the invention, the blending ratio of the first mixture and binding agent is also not particularly limited, according to a particular embodiment of the invention, can be that the second combination treatment is carried out in 1.045 ~ 1.15:0.05 ~ 0.1 according to mass ratio by the first mixture and binding agent.Contriver finds, if binder content is too high, cause cost significantly to increase, and binder content is too low, makes molding effect poor.Thus, select the blending ratio of this scope, obviously can improve the processability of blue charcoal.
According to embodiments of the invention, the particular type of binding agent is also not particularly limited, and according to a particular embodiment of the invention, binding agent can be humic acids binding agent, such as, can be sodium humate or potassium humate.Contriver finds, humic acids binding agent, as a kind of polymer aromatic hydroxyl carboxyl salt, has the various active such as hydroxyl, carboxyl salt group, therefore has good plasticity and adhesive property, can improve the formability of blue charcoal thus.
S300: forming processes
According to embodiments of the invention, adopt ring mode forming machine that above the second obtained mixture is carried out forming processes, thus can molding materials be obtained.Thus, the suitability at blue charcoal end can be significantly improved.
Contriver finds, ring mode forming machine makes pressure roller or ring mould do turning motion under the driving of power, strong friction and Extrusion is produced with the material entering pressure roller and ring die clearance in operation process, material is clamp-oned in ring mold forming hole, material constantly rubs, extruding produces high temperature, under the influence of high pressure and temperature, enter the material first softening rear flow in nib, define Plastic phase, ring mode forming machine is adopted to carry out forming processes to the second mixture thus, effectively can improve the formability of blue charcoal, and make obtained fuel stick density high through ring mode extruding, and shatter strength and ultimate compression strength are all higher, thus be easy to transport, adopt ring mode forming machine compared with traditional machine for producing coal bars simultaneously, fuel stick output can be significantly improved, and lower (the ring mode forming machine output 5 tons/hour of energy consumption, real power is 26KW, machine for producing coal bars output is 3 tons/hour, real power is 50KW).
According to embodiments of the invention, the shape of molding materials is also not particularly limited, and according to a particular embodiment of the invention, molding materials can be round bar-shaped, and circular bar-shaped diameter can be 10 ~ 60 millimeters.Contriver finds, molding materials too slightly or too carefully all can reduce its intensity, and molding materials too slightly or is too carefully all not suitable with existing stove and accessory.
S400: drying treatment
According to embodiments of the invention, above obtained molding materials is carried out drying treatment, thus can fuel stick be obtained.Thus, the thermal value of fuel stick can be significantly improved.
According to embodiments of the invention, the condition of drying treatment is also not particularly limited, and according to a particular embodiment of the invention, drying treatment can carry out 180 ~ 240 minutes under 70 ~ 90 degrees Celsius.Contriver finds, can significantly improve the drying efficiency of molding materials under this condition.According to embodiments of the invention, the moisture content of the fuel stick obtained through drying treatment is 2 ~ 5wt%.Thus, the thermal value of fuel stick can be improved further.
As mentioned above, can have according to the method preparing fuel stick of the embodiment of the present invention and be selected from following advantage one of at least:
Pass through blue charcoal to mix with powdered biomass, humic acids binding agent and wilkinite according to the method preparing fuel stick of the embodiment of the present invention, and adopt ring mode forming machine for shaping to blue charcoal, obviously can improve the formability of blue charcoal, this unit hourly output is large, and energy consumption is low;
Low according to the fuel stick volatile matter that the method preparing fuel stick of the embodiment of the present invention obtains, its dry ash-free basis volatile matter is below 10%, and the volatile organic matter (VOC) of discharge significantly reduces than bituminous coal when burning, thus the problem that urban residents' warming smolders can be solved, improve atmospheric environment;
Low according to the fuel stick total sulphur content that the method preparing fuel stick of the embodiment of the present invention obtains, and add sulphur-fixing agent, the SO2 discharged during burning is few, significantly can improve atmospheric environment;
High according to the fuel stick thermal value that the method preparing fuel stick of the embodiment of the present invention obtains, can more than 26MJ/kg be reached;
Shatter strength and the ultimate compression strength of the fuel stick obtained according to the method preparing fuel stick of the embodiment of the present invention are high, are easy to transport;
The cheaper starting materials adopted in the method for fuel stick of preparing according to the embodiment of the present invention is easy to get, and tooling cost is low, and technique is simple, is easy to promote.
In another aspect of the present invention, the present invention proposes a kind of fuel stick.According to embodiments of the invention, this fuel stick is prepared by aforesaid method.Thus, this fuel stick volatile matter is low, sulphur content is low, thermal value is high, low price, can substitute hard coal and cook for outer suburbs villager or national Rural areas warming, and then obviously reduce haze, thus effectively improve Air quality.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiments are only descriptive, and do not limit the present invention in any way.
Embodiment 1
Composition of raw materials: the humic acids binding agent of the powdered biomass of the wilkinite of 1 weight part, the white lime of 3 weight parts, 2 weight parts, the ignition dope of 0.5 weight part, 6 weight parts, the blue charcoal end of 100 weight parts;
Preparation method: first blue charcoal end is mixed with powdered biomass, wilkinite, white lime and ignition dope, obtain the first mixture, then in the first mixture, add humic acids binding agent continue to stir, obtain the second mixture, then adopt ring mode forming machine to the second mixture extrusion molding, obtain molding materials, then drying treatment is carried out to obtained molding materials, can fuel stick be obtained.
Gained fuel stick fall strength of briquette 92.8%, ultimate compression strength 712N/, dry ash-free basis volatile matter 7.4%, moisture 3.46%, thermal value 26.12MJ/kg, density 1.16g/cm
3, and examination burning is carried out to fuel stick, the lasting very hot oven time can reach 8 hours, the SO discharged in flue gas
2concentration is 15.5mg/m
3, NO
xconcentration is 40mg/m
3, obviously also low than the standard of " Beijing's emission standard of air pollutants for boilers " DB 11/139-2007.
Embodiment 2
Composition of raw materials: the humic acids binding agent of the powdered biomass of the wilkinite of 2 weight parts, the white lime of 2 weight parts, 2 weight parts, the ignition dope of 0.8 weight part, 8 weight parts, the blue charcoal end of 100 weight parts;
Preparation method: with embodiment 1.
The fuel stick obtained, its fall strength of briquette 93.5%, ultimate compression strength 720N/, dry ash-free basis volatile matter 8.7%, moisture 2.86%, thermal value 27.86MJ/kg, density 1.17g/cm
3, and examination burning is carried out to fuel stick, the lasting very hot oven time can reach 9 hours, the SO discharged in flue gas
2concentration is 16.5mg/m
3, NO
xconcentration is 42mg/m
3, obviously also low than the standard of " Beijing's emission standard of air pollutants for boilers " DB 11/139-2007.
Embodiment 3
Composition of raw materials: the humic acids binding agent of the powdered biomass of the wilkinite of 2 weight parts, the white lime of 2 weight parts, 3 weight parts, the ignition dope of 0.8 weight part, 8 weight parts, the blue charcoal end of 100 weight parts;
Preparation method: with embodiment 1.
The fuel stick obtained, its fall strength of briquette 90.2%, ultimate compression strength 703N/, dry ash-free basis volatile matter 9.5%, moisture 3.67%, thermal value 28.65MJ/kg, density 1.15g/cm
3, and examination burning is carried out to fuel stick, the lasting very hot oven time can reach 8.5 hours, the SO discharged in flue gas
2concentration is 16mg/m
3, NO
xconcentration is 44mg/m
3, obviously also low than the standard of " Beijing's emission standard of air pollutants for boilers " DB 11/139-2007.
Comparative example
Composition of raw materials: the semicoke powder of 70%, the coke powder of 30wt%, forming adhesive is 5 ~ 7% of semicoke powder and coke powder total mass, wherein, forming adhesive formula is: the Tapioca Starch of the guar gum of 10wt%, the sodium carbonate of 10wt%, 20wt%, the flour of 50wt%, the santal wood powder of 2wt% and the carboxymethyl starch of 8wt%;
The preparation method of forming adhesive: first by Tapioca Starch and flour Homogeneous phase mixing, obtain mixture, then in reaction vessel, add the water of 550 weight parts, and be heated to 70 degrees Celsius, then the mixture of 20 weight parts is got, and dilute under normal temperature with the water of 10 times, obtain diluent, then diluent is poured in above-mentioned reaction vessel, and Keep agitation, continue to be heated to 90 degrees Celsius, then sodium carbonate is added, then add in reaction vessel after carboxymethyl starch and guar gum being formulated as solution respectively, heating is stopped when temperature gets back to 90 degrees Celsius, and add santal wood powder and be stirred to and be uniformly dispersed, forming adhesive can be obtained.
Fuel stick preparation method: by semicoke powder and coke powder Homogeneous phase mixing, then adds forming adhesive and carries out forming processes and can obtain fuel stick.
The fuel stick obtained, its fall strength of briquette 80%, ultimate compression strength 460N/, dry ash-free basis volatile matter 18%, moisture 3.79%, thermal value 23.2MJ/kg, density 1.01g/cm
3, and examination burning is carried out to fuel stick, the lasting very hot oven time can reach 5 hours, the SO discharged in flue gas
2concentration is 40mg/m
3, NO
xconcentration is 160mg/m
3, higher than the standard of " Beijing's emission standard of air pollutants for boilers " DB 11/139-2007.
Evaluate:
Analyze the fuel stick cost that embodiment 1 ~ 3 and comparative example obtain respectively, analytical results as shown in Table 1 and Table 2.
Table 1 embodiment 1 ~ 3 gained fuel stick cost
Table 2 comparative example gained fuel stick cost
Conclusion: from table 1 and table 2 data analysis, the fuel stick price that embodiment 1 ~ 3 obtains compared with comparative example is lower, and adopt the fuel stick average cost that obtains of the embodiment of the present invention comparatively comparative example obtain fuel stick cost and reduce by 179.92 yuan/ton, the visible method preparing fuel stick of the present invention can significantly reduce fuel stick cost, and the fuel stick thermal value that embodiment 1 ~ 3 obtains is significantly higher than fuel stick that comparative example obtains, and SO in flue gas
2and NO
xquantity discharged significantly lower than the fuel stick that comparative example obtains, meets " Beijing's emission standard of air pollutants for boilers " DB 11/139-2007 pollutant emission standard.
Note: " Beijing's emission standard of air pollutants for boilers " DB 11/139-2007 pollutant emission standard: SO
2≤ 20mg/m
3, NO
x≤ 150mg/m
3.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (8)
1. prepare a method for fuel stick, it is characterized in that, comprising:
The first combination treatment is carried out, to obtain the first mixture with powdered biomass, ignition dope, sulphur-fixing agent and wilkinite in blue charcoal end;
Described first mixture and binding agent are carried out the second combination treatment, to obtain the second mixture;
Ring mode forming machine is adopted to carry out forming processes, to obtain molding materials to described second mixture; And
Described molding materials is carried out drying treatment, to obtain described fuel stick.
2. the method preparing fuel stick according to claim 1, is characterized in that, the dry ash-free basis volatile content at described blue charcoal end not higher than 8wt%, total sulphur content not higher than 0.4wt%, thermal value be not less than 5000 kilocalories/kilogram.
3. the method preparing fuel stick according to claim 1, it is characterized in that, be that 1:0.01 ~ 0.05:0.005 ~ 0.01:0.02 ~ 0.06:0.01 ~ 0.03 carry out described first combination treatment with described powdered biomass, described ignition dope, described sulphur-fixing agent and described wilkinite according to mass ratio by described blue charcoal end.
4. the method preparing fuel stick according to claim 3, is characterized in that, the particle diameter at described blue charcoal end is not higher than 3 millimeters, and the particle diameter of described powdered biomass is not higher than 2 millimeters, and described wilkinite particle diameter is not less than 75 microns.
5. the method preparing fuel stick according to claim 3, it is characterized in that, described powdered biomass is sawdust or stalk powder, described ignition dope is the mixture containing ferric oxide, sodium-chlor and potassium permanganate, wherein, the mass ratio of described ferric oxide, described sodium-chlor and described potassium permanganate is 2:2:1, and described sulphur-fixing agent is white lime or unslaked lime.
6. the method preparing fuel stick according to claim 1, is characterized in that, is that described second combination treatment is carried out in 1.045 ~ 1.15:0.05 ~ 0.1 by described first mixture and described binding agent according to mass ratio.
7. the method preparing fuel stick according to claim 6, is characterized in that, described binding agent is humic acids binding agent.
8. a fuel stick, is characterized in that, is obtained by the method preparing fuel stick described in any one of claim 1 ~ 7.
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| CN105925336A (en) * | 2016-05-12 | 2016-09-07 | 陕西聚泰新材料科技有限公司 | Biomass composite fuel with high combustion efficiency and a preparation method thereof |
| CN106590791A (en) * | 2016-11-30 | 2017-04-26 | 神雾环保技术股份有限公司 | Semi-coke powder molding method |
| CN107099353A (en) * | 2017-07-12 | 2017-08-29 | 石家庄神力新能源科技有限公司 | A kind of complex biological matter fuel preparation method |
| CN108342238A (en) * | 2017-01-23 | 2018-07-31 | 迁安市福安达商贸有限责任公司 | A kind of formula and preparation method thereof of combustion-supporting coal briquette bond |
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| CN109868171A (en) * | 2017-12-02 | 2019-06-11 | 徐州市贾汪区羡人工贸有限公司 | A kind of environment-friendly biomass fuel and processing method |
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| CN105925336A (en) * | 2016-05-12 | 2016-09-07 | 陕西聚泰新材料科技有限公司 | Biomass composite fuel with high combustion efficiency and a preparation method thereof |
| CN105925336B (en) * | 2016-05-12 | 2018-10-26 | 陕西聚泰新材料科技有限公司 | A kind of biomass composite fuel of high burning efficiency and preparation method thereof |
| CN106590791A (en) * | 2016-11-30 | 2017-04-26 | 神雾环保技术股份有限公司 | Semi-coke powder molding method |
| CN108342238A (en) * | 2017-01-23 | 2018-07-31 | 迁安市福安达商贸有限责任公司 | A kind of formula and preparation method thereof of combustion-supporting coal briquette bond |
| CN107099353A (en) * | 2017-07-12 | 2017-08-29 | 石家庄神力新能源科技有限公司 | A kind of complex biological matter fuel preparation method |
| CN109868171A (en) * | 2017-12-02 | 2019-06-11 | 徐州市贾汪区羡人工贸有限公司 | A kind of environment-friendly biomass fuel and processing method |
| CN108587713A (en) * | 2018-02-07 | 2018-09-28 | 合肥嘉仕诚能源科技有限公司 | A kind of novel biomass granular fuel and preparation method thereof |
| CN109294671A (en) * | 2018-10-24 | 2019-02-01 | 定远县碧蓝山新能源有限公司 | A kind of environmental-protective and regenerative biomass fuel |
| CN109370692A (en) * | 2018-11-19 | 2019-02-22 | 农业部规划设计研究院 | A kind of heating tailored version mixture charcoal and preparation method thereof based on stalk pyrolysis-type charcoal |
| CN110804474A (en) * | 2019-11-26 | 2020-02-18 | 内蒙古万众炜业科技环保股份公司 | Manufacturing method for preparing high-viscosity briquette through semi coke and briquette |
| CN112457898A (en) * | 2020-11-23 | 2021-03-09 | 马迅 | Biomass coal clean mixed fuel and preparation method thereof |
| CN113444555A (en) * | 2021-06-18 | 2021-09-28 | 太原理工大学 | Coke powder-based clean briquette for cooking and heating and preparation method thereof |
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| CN104212511B (en) | 2016-08-17 |
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