CN101948708A - Solid fuel composition and application thereof in glass melting - Google Patents
Solid fuel composition and application thereof in glass melting Download PDFInfo
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- CN101948708A CN101948708A CN2010105029385A CN201010502938A CN101948708A CN 101948708 A CN101948708 A CN 101948708A CN 2010105029385 A CN2010105029385 A CN 2010105029385A CN 201010502938 A CN201010502938 A CN 201010502938A CN 101948708 A CN101948708 A CN 101948708A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
Abstract
The invention provides a solid material. The solid material is characterized by comprising coal powder, petroleum coke powder, biomass fuel powder and fuel additive which are mixed uniformly, wherein the fuel additive comprises silicon dioxide and calcium carbonate or calcium oxide. The solid material is suitable for dilute phase pneumatic conveying into a glass kiln. Moreover, the invention also provides application, a preparation method, a preparation device and the like of the solid material.
Description
Technical field
The invention belongs to the glass smelting field, particularly, the present invention relates to be applicable to the air conveying solid fuel that enters glass furnace of dilute phase.In addition, the invention still further relates to above-mentioned solid-fuelled application, preparation method and preparation facilities etc.
Background technology
Directly burning, heating wants efficient much higher with the technology of fusion cast glass than the technology that adds hot melt system at glass furnace in glass furnace, can save a large amount of fuel.But directly burning in glass furnace needs to consume a large amount of fossil oils, especially needs low ash, low-sulfur and satisfies the fuel that glass production is not caused other conditions of disadvantageous effect, as Sweet natural gas and heavy oil etc.
Yet, surging along with oil price, current people are seeking the substitute of liquid fuels such as heavy oil, comprise Solid-liquid Mixed Fuel and solid fuel.For example, Chinese patent application discloses a kind of Solid-liquid Mixed Fuel that is used for fusion cast glass No. 200610069803, it comprises 5 ~ 80% refinery coke, 20% ~ 95% oil fuel and small amount of moisture, emulsifying agent and dispersion agent, but, this propellant combination still needs to consume the more expensive heavy oil of a large amount of prices, and it is a fluid form, can't use current strength solid-fuelled device, especially this article to represent that clearly coal dust does not burn owing to the restriction of ash oontent and calorific value is suitable for directly to enter in the glass furnace; And for example, the paper of No. the 02807101st, Chinese patent application and Ceng Xiaojun etc. (petroleum coke powder directly burns at glass melter and replaces the applicability analysis of heavy oil. glass and enamel, 36(3): 23-27) disclose refinery coke with moiety similar to heavy oil (except the sulphur content) and acted as a fuel and apply in the glass smelting, but prompting can not add the solid fuel of the contour the ash content of coal of coal in glass smelting, but ash content there is very high requirement on the contrary, also proposes sulphur-fixing agents such as inapplicable Wingdale, unslaked lime in addition and come solid sulphur.
The coal of existing bibliographical information and the composite solid fuel of refinery coke substantially all are applied to blast furnace ironmaking, limestone kiln, cement kiln, boiler etc. in ash content and the insensitive Industrial Stoves of sulphur content, as referring to the paper of Ren Huifeng etc. (coal tar mixes the experimental study of powder incendiary. combustion science and technology, 10(6): 554-558), even there is bibliographical information to use coal dust or petroleum coke powder to come fusion cast glass, when but refinery coke is used in prompting, require low sulfur content; When using coal, require low ash content, the use of desulfurization refinery coke and low ash coal will greatly increase raw materials cost.What is more important, above-mentioned all application all are confined to the application of fossil oil, this moves towards exhausted trend without any active effect just fast for all kinds of fossil oils in the whole world, and existing document the application in the solid fuel of glass furnace does not enlighten to some extent to biomass fuel (especially biomass solid fuel).
Air conveying solid fuel enters on the basis of the long-term research experience of glass furnace incendiary technology the inventor to dilute phase at oneself, secular arduous experiment of process and the fortune composition that some is accidental, found solid fuel surprisingly by the cost lower (can use commercially available bituminous coal and high sulfur petroleum coke) of air conveying some composition of dilute phase and proportioning, not only carry stable, even variable grain size, but fuel still is able to homodisperse, and after the fuel combustion of rational proportion since coal dust by dispersion and ash content is little and light, in the combustion processes that continues, can constantly rise, can't influence glass quality, also can not stop up the facilities such as flue of glass furnace; And the inventor also finds, suitably adds additives such as lime carbonate, and the fuel of rational proportion not only can not cause the deposition of calcium sulfate, disperses more evenly in the time of can making the high performance fuel burning on the contrary, burns more fully, the SO of generation
2Evenly diluted and be not easy and contacted, can from flue gas, be distributed, can not caused influence glass quality with the bigger limestone powder of frit and particle in the glass furnace; In addition, it is alternative to the part of fossil oil that the inventor has carried out the biomass fuel powder, although find that biomass fuel powder calorific value is lower, but its low ash and low-sulfur performance are enough effectively improved the ash content situation of coal dust in the fuel and the high sulfur content situation of refinery coke, and its low heat value and bigger particle can make that also high performance fuel more disperse, the sufficient combustion that is of value to fuel, the SO that makes the refinery coke generation
2Evenly diluted, from flue gas, distributed, can not caused influence, be applicable to fusion cast glass fully, therefore can be reduced the use of fossil oil, for Sustainable development is contributed to glass quality.In addition, the inventor also provides above-mentioned solid-fuelled purposes, preparation method and preparation facilities etc.
Summary of the invention
The object of the present invention is to provide a kind of solid fuel, by rational composition and proportioning, can use commercially available bituminous coal and high sulfur petroleum coke as raw material, need not to reduce in advance ash content and sulfur content, thereby greatly reduce raw materials cost, be applicable to that the air conveying glass furnace that enters of dilute phase is with fusion cast glass; And with the biomass solid fuel powder fossil oil is carried out a part and substitute, thereby reduced the use of fossil oil, be that Sustainable development increases power.In addition, the present invention also aims to provide this solid-fuelled purposes, preparation method and preparation facilities etc.
Particularly, in first aspect, the invention provides and be applicable to the air conveying solid fuel that enters glass furnace of dilute phase, it is characterized in that, it comprises coal dust, petroleum coke powder, biomass fuel powder and the fuel dope that mixes, and wherein fuel dope comprises silicon-dioxide and comprises lime carbonate or calcium oxide.Preferred this solid fuel is made up of coal dust, petroleum coke powder, biomass fuel powder and fuel dope.
The inventor finds, even the high-ash like this coal of bituminous coal, in solid fuel and add the interval that additive or other fuel composition make it between the powder and strengthen, ash content is difficult for condensing and becomes big, also can be applied to fusion cast glass through the reasonable proportioning blending.In the specific embodiment of the present invention, because bituminous coal also can be implemented in fusion cast glass, therefore those skilled in the art will envision that the also suitable enforcements in the present invention such as hard coal that ash oontent is lower, therefore in this article, coal comprises bituminous coal, hard coal and brown coal.
The inventor finds, though the such doctor positive refinery coke of high sulfur petroleum coke, through the reasonable proportioning blending in solid fuel and add the interval that additive or other fuel composition make it between the powder and strengthen the SO that burning produces
2Evenly diluted and be not easy and contacted, from flue gas, distributed easily, also can be applied to fusion cast glass with the bigger limestone powder of frit and particle in the glass furnace.In the specific embodiment of the present invention, because high sulfur petroleum coke can be implemented in fusion cast glass, therefore those skilled in the art will envision that also suitable enforcement in the present invention such as lower middle sulphur petroleum Jiao of sulphur content, low-sulfur refinery coke and desulfurization refinery coke, therefore in this article, refinery coke comprises high sulfur petroleum coke, middle sulphur petroleum Jiao, low-sulfur refinery coke and desulfurization refinery coke.
Preferably in the solid fuel of first aspect present invention, the weight proportion of coal dust, petroleum coke powder, biomass fuel powder and fuel dope is 5 ~ 65:30 ~ 65:5 ~ 33:0.5 ~ 5, is preferably 8 ~ 58:33 ~ 61:8 ~ 30:1 ~ 2.For example, in the specific embodiment of the present invention, the weight proportion of coal dust, petroleum coke powder, biomass fuel powder and fuel dope can be 58:33:8:1, or 45:42:11:2, or 30:51:18:1, or 25:57:16:2, or 8:61:30:1, etc.In addition, also preferred in 100 parts of solid fuels, the content of coal dust is 5 ~ 65 parts in the solid fuel of first aspect present invention, and the content of petroleum coke powder is 30 ~ 65 parts, and the content of biomass fuel powder is 5 ~ 33 parts, and the content of fuel dope is 0.5 ~ 5 part; More preferably in 100 parts of solid fuels, the content of coal dust is 8 ~ 58 parts, and the content of petroleum coke powder is 33 ~ 61 parts, and the content of biomass fuel powder is 8 ~ 30 parts, and 1 ~ 2 part of the content of fuel dope.In this article, as do not particularly point out, according to those skilled in the art's general understanding, all proportionings are weight ratio, and umber is weight part.
Preferably in the solid fuel of first aspect present invention, fuel dope is made up of raw material powder that is rich in silicon-dioxide and the raw material powder that is rich in lime carbonate or calcium oxide, more preferably by limestone powder and husky the composition.Be rich in the raw material powder of silicon-dioxide the most cheap be husky, comprise river sand, sea sand and the artificial sand of pulverizing.Although can adopt, the raw material of silicon-dioxide is rich in conducts such as the quartz of preferred costliness, mica.The raw material that is rich in lime carbonate or calcium oxide also is that those skilled in the art know, for example Wingdale and unslaked lime.Although can adopt, the raw material of lime carbonate or calcium oxide is rich in not preferred expensive conducts such as marble.In preferred fuel dope, limestone powder and husky weight proportion are 0.5 ~ 3:7 ~ 10, are preferably 1 ~ 2:8 ~ 9.Because in actual use, contain the sand and the mineral calcium of higher proportion in the low-quality coal of part, therefore can in solid fuel, additionally not add fuel dope.So the present invention can be equal to the solid fuel that does not contain fuel dope.But preferred, in the specific embodiment of the present invention, limestone powder and husky weight proportion can be 1:9, or 2:8, etc.In addition, also preferably in 10 portions of fuel dopes, the content of limestone powder is 0.5 ~ 3 part, and husky content is 7 ~ 10 parts.
In this article, term " powder " has implication well-known to those skilled in the art, refers to the powdered solids.The inventor adopts solids to prepare (comprising fuel and additive) solid fuel of first aspect present invention fully, do not use liquid fuel and additive, thereby it is air conveying to be implemented dilute phase fully, and need not to worry that the situation of solid-liquid separation takes place.The size of powder usually can with can distinguish by the size of sieve aperture, this can grind and the sieve aperture of the corresponding size of jetting is realized by coal pulverizer, the maximum particle diameter of powder is less than screen-aperture, therefore in this article, can distinguish different powder by certain screen-aperture with the powder that coal pulverizer grinds.Because the screen cloth specification in country variant, different industries has different standards, therefore the implication of " order " also is difficult to unification, for this reason, in this article, adopts the order number of sieve as shown in the table and the conversion relation of the grain diameter that can pass through:
Preferably in the solid fuel of first aspect present invention, the maximum particle diameter of coal dust is less than the maximum particle diameter of petroleum coke powder.The inventor finds, in the winding-up jar in dilute-phase pneumatic conveying device, it is even that the particle diameter of common powder does not influence blended, yet in long transmission pipeline, different-grain diameter, different types of powder have different transmission speeds, even difference is very little, but because the length of transmission pipeline is longer, can cause finally that heterogeneity proportion changes in the solid fuel when being conveyed into glass furnace, causing the instability of course of conveying and final glass production quality.Therefore, the inventor is through arduous experiment, and the maximum particle diameter of finding coal dust can be eliminated the influence of transmission speed less than the maximum particle diameter 10 ~ 20% of petroleum coke powder the time substantially.Although the paper of Ren Huifeng etc. (coal tar mixes the experimental study of powder incendiary. combustion science and technology, 10(6): 554-558) instruction can mix and grinds coal and refinery coke, but the inventor adopts and grinds respectively, cross the isolating mode of different sieve apertures, solve the unsettled situation that the air conveying composite solid fuel of dilute phase is taken place.Therefore, more preferably in the solid fuel of first aspect present invention, the maximum particle diameter of coal dust is less than the maximum particle diameter 10 ~ 20% of petroleum coke powder, and preferred coal dust is the coal dust that can pass through 140 mesh sieves, and preferred petroleum coke powder is can be by the petroleum coke powder of 120 mesh sieves.In the specific embodiment of the present invention, coal dust is the coal dust that can pass through 170 mesh sieves, and petroleum coke powder is can be by the petroleum coke powder of 140 mesh sieves.
Preferably in the solid fuel of first aspect present invention, the biomass fuel powder also claims the biomass solid fuel powder, refer to the powder of the plant materials of carbon fiber-containing, the powder of xylophyta body cane preferably, for example, plants such as Pinaceae, Tiliaceae, scrophulariaceae, Papilionaceae, Magnoliaceae, Gramineae, Salicaceae, Betulaceae particularly, can be one or more blended powder of biomass solid things such as timber, stalk and rice husk.For the consideration of cost, timber is the timber of non-value added applications (using as furniture, decoration) usually, and as cork, for example oak and pine etc. also can be finished timber tankage, as, wood shavings and wood chip etc.Usually, the biomass fuel powder is an exsiccant.The biomass fuel powder can directly be pulverized and get, and also can be the biomass fuel powder through hydrolysis.For example, can by in the water of pH4 ~ 6 through 115 ~ 126 ℃ of high temperature (will in hyperbaric environment, implement) hydrolysis, preferably in the water of pH5.5 through 121 ℃ of pyrohydrolysises, the ash contents such as basic metal that assist in removing like this in the biomass fuel produce material.Yet basic metal is harmless to glass production sometimes, therefore when biomass fuel powder amount is less, preferred biomass fuel powder be directly pulverize and the biomass fuel powder; And when biomass fuel powder amount is bigger, preferably pass through the biomass fuel powder of hydrolysis, as in the water of pH4 ~ 6 through the powder of 115 ~ 126 ℃ of pyrohydrolysises.The biomass fuel calorific value is low, it is can substitute the part fossil oil to use in fusion cast glass that but the inventor finds the biomass fuel powder, even eliminate the disadvantageous effect of ash content and high sulfur content when helping glass smelting, for the consideration of Sustainable development, it is very useful using the biomass fuel powder among the present invention in addition.For the consideration of the air conveying stability of dilute phase, the inventor discovers that the biomass fuel powder can most preferably be can be by the powder of 50 mesh sieves by the powder of 40 mesh sieves preferably equally.Because biomass powder itself is lighter, and the content in solid fuel is less relatively, according to the secular experiment of the inventor, depositional phenomenon can not take place owing to collision effect in the biomass powder of granular size in the dilute phase process of pneumatic transmission like this, can guarantee stability and homogeneity that solid fuel is carried.
Preferably in the solid fuel of first aspect present invention, limestone powder is can be by the limestone powder of 40 mesh sieves.The inventor finds, because the content of limestone powder in solid fuel seldom, owing to collision effect tangible depositional phenomenon can not take place in the dilute phase process of pneumatic transmission, and after being conveyed into glass furnace, suitable fast deposition also helps it and breaks away from SO
2Gas reduces the influence of the generation of calcium sulfate to glass quality, can be littler to the influence of glass quality than the limestone powder that grinds carefullyyer on the contrary by the limestone powder of 40 mesh sieves.In addition, because husky content is bigger, therefore for the consideration of the air conveying stability of dilute phase, preferably in the solid fuel of first aspect present invention, sand is can be by the sand of 50 mesh sieves, one or more mixtures of No. six sand (50-70 order), No. seven sand (70-100 order) and No. eight sand (100-160 order) preferably, these sand can grind voluntarily, but preferably by buying on the market.
In second aspect, the invention provides preparation first aspect present invention described solid-fuelled method, it is characterized in that this method comprises,
(1) grinds out coal dust, petroleum coke powder, biomass fuel powder and fuel dope respectively;
(2) mix coal dust, petroleum coke powder, biomass fuel powder and fuel dope.
In the method for second aspect present invention, each preferred aspect of preferred first aspect present invention.For example, owing to need consider transmission stability, therefore most preferably coal dust is can be by the coal dust of 40 mesh sieves, and petroleum coke powder is the petroleum coke powder that can pass through 35 mesh sieves, and the biomass fuel powder is can be by the powder of 35 mesh sieves; In addition, also the preferred fuel additive is by limestone powder and husky the composition, and preferred wherein limestone powder is the limestone powder that can pass through 40 mesh sieves, and/or sand is can be by the sand of 50 mesh sieves.
In the third aspect, the invention provides the described solid-fuelled device of preparation first aspect present invention, it comprises and grinds device, is respectively applied at least 4 (preferred 4) metering devices accepting coal dust, petroleum coke powder, biomass fuel powder and fuel dope and the mixing device that all links to each other with all metering devices, the optional e Foerderanlage that also comprises the filler bin that connects mixing device and dilute-phase pneumatic conveying device.
Preferably in the device of third aspect present invention, mixing device has only 1.Like this, metering device separates, and does not load in mixture raw material, has avoided the mixing inequality of the different raw material of particle diameter like this; And 1 mixing device has been saved the cost of mixing equipment.For example, the metering device of petroleum coke powder can be accepted the petroleum coke powder that coal pulverizer grinds, and the folding of the valve by the bottom is quantitatively sent into petroleum coke powder in the coupled mixing device; The metering device of coal dust can be accepted the coal dust that coal pulverizer grinds, and the folding of the valve by the bottom is quantitatively sent into coal dust in the coupled mixing device; The metering device of biomass fuel powder can be accepted the biomass fuel powder that coal pulverizer grinds, and the folding of the valve by the bottom is sent into biomass fuel fen-ting amount in the coupled mixing device; And the metering device of fuel dope can be accepted fuel dope, and the folding of the valve by the bottom is quantitatively sent into fuel dope in the coupled mixing device.Mixing device is coal mixer preferably.Dilute-phase pneumatic conveying device can be the described dilute-phase pneumatic conveying device of No. the 200910162436th, Chinese patent application (it includes this paper reference in full in), so the filler bin of dilute-phase pneumatic conveying device can be the filler bin of No. 200910162436 described dilute-phase pneumatic conveying device of Chinese patent application.The e Foerderanlage that connects mixing device and filler bin, the preferred air conveying e Foerderanlage of right and wrong is as travelling belt.
In fourth aspect, the invention provides the purposes of the described solid fuel of first aspect present invention in the method for fusion cast glass, it is characterized in that, with described solid fuel with the air conveying glass furnace internal combustion that enters of dilute phase with fusion cast glass.Wherein, the method of fusion cast glass is preferably as described in No. the 200910162436th, the Chinese patent application, be about to the described solid fuel of first aspect present invention with the air conveying glass furnace internal combustion that enters of dilute phase with fusion cast glass, wherein the air conveying solid-gas ratio of dilute phase is 3.5:1 to 7.5:1, be preferably 4:1 to 6:1, more preferably 4.5:1 to 5.5:1 most preferably is 5:1.
Therefore, correspondingly, aspect the 5th, the invention provides the method for fusion cast glass, it is characterized in that, with the described solid fuel of first aspect present invention with the air conveying glass furnace internal combustion that enters of dilute phase with fusion cast glass, wherein the air conveying solid-gas ratio of dilute phase is 3.5:1 to 7.5:1, be preferably 4:1 to 6:1, more preferably 4.5:1 to 5.5:1 most preferably is 5:1.
Beneficial effect of the present invention is: solid-fuelled raw materials cost is low, even can not need much higher low ash coal of cost and desulfurization refinery coke; Use biological system fuel to replace the part of fossil oil, increased the sustainability of development; Solid fuel is carried stable, especially can keep stable in the dilute phase process of pneumatic transmission; The glass quality of producing is qualified, is not subjected to the influence of ash content and sulphur in the raw material; The glass furnace production safety can be not too much because of ash content, excessive and stop up facilities such as flue and regenerator.
For the ease of understanding, below will describe in detail the present invention by concrete accompanying drawing, embodiment.It needs to be noted that these descriptions only are exemplary descriptions, do not constitute limitation of the scope of the invention.According to the argumentation of this specification sheets, many variations of the present invention, change all are conspicuous concerning one of ordinary skill in the art.In addition, the present invention has quoted open source literature, and these documents are in order more clearly to describe the present invention, and their full text content is all included this paper in and carried out reference, just looks like that repeated description is the same excessively in this article for their full text.
Description of drawings
Fig. 1 is preparation and carries solid-fuelled schematic representation of apparatus of the present invention, wherein 11 is metering devices of petroleum coke powder, for example it can accept the petroleum coke powder that coal pulverizer grinds, and the folding of the valve by the bottom is quantitatively sent into petroleum coke powder in the coupled mixing device 3; Wherein 12 is metering devices of coal dust, and for example it can accept the coal dust that coal pulverizer grinds, and the folding of the valve by the bottom is quantitatively sent into coal dust in the coupled mixing device 3; Wherein 13 is metering devices of biomass fuel powder, and for example it can accept the biomass fuel powder that coal pulverizer grinds, and the folding of the valve by the bottom is sent into biomass fuel fen-ting amount in the coupled mixing device 3; Wherein 14 is metering devices of fuel dope, and for example it can accept fuel dope, and the folding of the valve by the bottom is quantitatively sent into fuel dope in the coupled mixing device 3; Wherein 3 is mixing devices, as being coal mixer; Wherein 2 is filler bins of dilute-phase pneumatic conveying device, as being the filler bin of No. 200910162436 described dilute-phase pneumatic conveying device of Chinese patent application; Wherein 4 is the e Foerderanlages that connect mixing device 3 and filler bin 2, and the preferred air conveying e Foerderanlage of right and wrong is as travelling belt.
Embodiment
Further specify content of the present invention by the following examples.As do not specialize, conventional means that used technique means is well known to those skilled in the art among the embodiment and commercially available common instrument, reagent, can be referring to " furnace coal spraying technology " (metallurgical industry press, Beijing) and the manufacturers instruction of relevant device and raw material etc., comprise No. 200910162436 described dilute-phase pneumatic conveying device of Chinese patent application.
The preparation 1 of embodiment 1 biomass fuel powder
Oak or pine are cut into the fritter that size (the maximum length of side or diameter) is not more than 0.5cm, under room temperature, be immersed in the water and clean, remove sedimentary impurity, get buoyant timber fritter and place continuous frame whizzer to slough moisture.Then, be tiled in the timber fritter in the oven dry kiln and be 170 ℃ of dryings 3 hours with 80 ℃ of temperature in the stove, air outlet temperature, in pulverizer, be ground into the particle that size is not more than 2mm.Then, should wear into fine powder with coal pulverizer, collect the fine powder of 50 mesh sieves (being that particle diameter is less than 0.3mm), be prepared into the biomass fuel powder thus through dry granules.
The preparation 2 of embodiment 2 biomass fuel powder
Furniture Factory's timber tankage (wood shavings and wood chip) are ground into the particle that size is not more than 2mm in pulverizer, under room temperature, are immersed in the water and clean, remove sedimentary impurity, get buoyant wood particle and water with 1; 2 weight ratio is mixed in the seal-off pressure vapor can, and adding 10%(w/w) hydrochloric acid is regulated pH to 5.5, be heated to and open the pressure steam pot venting hole in the ebullient process with exhausted air, to venting hole all discharge be water vapour the time, close venting hole, continue heat temperature raising to 121 ℃ (saturated vapor pressure is 100kPa in jar), kept this temperature and pressure 30 minutes, processing thus is hydrolyzed.Then, 80 ℃ of temperature, air outlet temperature are 170 ℃ of dryings 8 hours in will being tiled in the oven dry kiln with stove through the particle of hydrolysis treatment.Then, should wear into fine powder with coal pulverizer, collect the fine powder of 50 mesh sieves (being that particle diameter is less than 0.3mm), be prepared into the biomass fuel powder thus through dry granules.
The preparation of embodiment 3 fossil oil powder
Although the paper of Ren Huifeng etc. (coal tar mixes the experimental study of powder incendiary. combustion science and technology, 10(6): 554-558) report, be not more than at sieve aperture under the situation of 0.45mm, after coal and refinery coke mixing grind, coal dust wherein and petroleum coke powder fineness distribution basically identical, but viewpoint difference therewith, we find in the dilute phase process of pneumatic transmission of reality, owing to need fluidisation and transport pipe long (this is not that coal pulverizer is carried and can be compared), distribution proportion appears in coal dust and petroleum coke powder easily in course of conveying inconsistent, thereby final influence sprays into the ratio of coal and petroleum coke powder in the glass furnace, therefore and bigger petroleum coke powder and the less coal dust (especially particle diameter differs from petroleum coke powder and the coal dust about 15%) of particle diameter of particle diameter can keep the distribution proportion basically identical in the dilute phase process of pneumatic transmission, do not influence incendiary stability in the glass furnace.Therefore, we adopt and grind respectively, and the blended mode is carried then, therefore grind coal dust and petroleum coke powder respectively.Get bituminous coal (Datong District's mixed coal) and wear into fine powder, collected the fine powder of 170 mesh sieves (being that particle diameter is less than 0.09mm), be prepared into coal dust thus by coal pulverizer; Other gets high sulfur petroleum coke (can available from raising sub-petrochemical industry) and wears into fine powder by coal pulverizer, collects the fine powder of 140 mesh sieves (being that particle diameter is less than 0. 106mm), is prepared into petroleum coke powder thus.
The preparation 1 of embodiment 4 fuel dopes
Get 1 part of Wingdale fragment and wear into fine powder, collected the fine powder of 40 mesh sieves (being that particle diameter is less than 0.425mm), mix, be prepared into fuel dope thus with 9 parts of fine sands (No. six sand, promptly particle diameter can be by 50 ~ 70 mesh sieves) by coal pulverizer.
The preparation 2 of embodiment 5 fuel dopes
Get 2 parts of Wingdale fragments and wear into fine powder, collected the fine powder of 40 mesh sieves (being that particle diameter is less than 0.425mm), mix, be prepared into fuel dope thus with 8 parts of fine sands (No. six sand, promptly particle diameter can be by 50 ~ 70 mesh sieves) by coal pulverizer.
Embodiment 6 solid-fuelled preparations 1
As shown in Figure 1, pass through metering device separately respectively, carry the coal dust of 58 parts of embodiment, 3 preparations to coal mixer, the petroleum coke powder of 33 parts of embodiment 3 preparations, the biomass fuel powder of 8 parts of embodiment 1 preparations, the fuel dope of 1 part of embodiment 5 preparation mixes, and is prepared into solid fuel thus.This solid fuel is conveyed in the filler bin of dilute-phase pneumatic conveying device by non-gas-phase transport device, then dilute phase is air conveying goes into glass furnace, the glass quality of producing is qualified, carefully much smaller when ash rate uses coal dust separately, take place to stop up the situation of facilities such as the flue of glass furnace and regenerator; But when improving air conveying solid-gas ratio to being greater than 10:1(, to go into glass furnace near concentrated phase (solid-gas ratio 30:1) is air conveying), perhaps increase the ratio 10% of coal dust again, discovery can both make ash content increase, and it is insufficient to burn, and has latch up phenomenon to take place.Therefore, solid fuel of the present invention need cooperate dilute-phase pneumatic conveying device to use, and the shared ratio of coal dust generally is no more than 65%.
Embodiment 7 solid-fuelled preparations 2
As shown in Figure 1, pass through metering device separately respectively, carry the coal dust of 45 parts of embodiment, 3 preparations to coal mixer, the petroleum coke powder of 42 parts of embodiment 3 preparations, the biomass fuel powder of 11 parts of embodiment 1 preparations, the fuel dope of 2 parts of embodiment 5 preparations mixes, and is prepared into solid fuel thus.This solid fuel is conveyed in the filler bin of dilute-phase pneumatic conveying device by non-gas-phase transport device, then dilute phase is air conveying goes into glass furnace, the glass quality of producing is qualified, carefully much smaller when ash rate uses coal dust separately, take place to stop up the situation of facilities such as the flue of glass furnace and regenerator.
Embodiment 8 solid-fuelled preparations 3
As shown in Figure 1, pass through metering device separately respectively, carry the coal dust of 30 parts of embodiment, 3 preparations to coal mixer, the petroleum coke powder of 51 parts of embodiment 3 preparations, the biomass fuel powder of 18 parts of embodiment 2 preparations, the fuel dope of 1 part of embodiment 5 preparation mixes, and is prepared into solid fuel thus.This solid fuel is conveyed in the filler bin of dilute-phase pneumatic conveying device by non-gas-phase transport device, then dilute phase is air conveying goes into glass furnace, the glass quality of producing is qualified, carefully much smaller when ash rate uses coal dust separately, take place to stop up the situation of facilities such as the flue of glass furnace and regenerator.
Embodiment 9 solid-fuelled preparations 4
As shown in Figure 1, pass through metering device separately respectively, carry the coal dust of 25 parts of embodiment, 3 preparations to coal mixer, the petroleum coke powder of 57 parts of embodiment 3 preparations, the biomass fuel powder of 16 parts of embodiment 2 preparations, the fuel dope of 2 parts of embodiment 4 preparations mixes, and is prepared into solid fuel thus.This solid fuel is conveyed in the filler bin of dilute-phase pneumatic conveying device by non-gas-phase transport device, then dilute phase is air conveying goes into glass furnace, the glass quality of producing is qualified, carefully much smaller when ash rate uses coal dust separately, take place to stop up the situation of facilities such as the flue of glass furnace and regenerator.
Embodiment 10 solid-fuelled preparations 5
As shown in Figure 1, pass through metering device separately respectively, carry the coal dust of 8 parts of embodiment, 3 preparations to coal mixer, the petroleum coke powder of 61 parts of embodiment 3 preparations, the biomass fuel powder of 30 parts of embodiment 2 preparations, the fuel dope of 1 part of embodiment 4 preparation mixes, and is prepared into solid fuel thus.This solid fuel is conveyed in the filler bin of dilute-phase pneumatic conveying device by non-gas-phase transport device, then dilute phase is air conveying goes into glass furnace, the sulphur content of the glass of producing is near the edge of criterion of acceptability, begun to be subjected to the influence of refinery coke high sulfur content, improve the ratio 10% of petroleum coke powder again, then must use the low-sulfur refinery coke instead.Because flue gas desulfurization can't improve the sulphur content of glass furnace inside, unless therefore further reduce sulphur content in the refinery coke in the process of coking, otherwise be difficult to continue to improve the ratio of refinery coke in solid fuel, but this will increase the refinery coke raw materials cost greatly.In the fusion cast glass process, carefully much smaller when ash rate uses coal dust separately, take place to stop up the situation of facilities such as the flue of glass furnace and regenerator.In addition, because biological system fuel powder particles is bigger, although course of conveying is stable, if but further improve the biological ratio 10% of making the fuel powder, biomass fuel powder depositional phenomenon then in course of conveying, occurred, cause and carry unstable, inhomogenous situation, so the ratio of biomass fuel powder generally has been no more than 33%, further improve ratio as needs, the biomass fuel grinding need be made thinner.
Claims (10)
1. be applicable to the air conveying solid fuel that enters glass furnace of dilute phase, it is characterized in that, it comprises coal dust, petroleum coke powder, biomass fuel powder and the fuel dope that mixes, wherein fuel dope comprises silicon-dioxide and comprises lime carbonate or calcium oxide, and preferably it is made up of coal dust, petroleum coke powder, biomass fuel powder and fuel dope.
2. the described solid fuel of claim 1, it is characterized in that, the weight proportion of coal dust, petroleum coke powder, biomass fuel powder and fuel dope is 5 ~ 65:30 ~ 65:3 ~ 33:0.5 ~ 5, be preferably 8 ~ 58:33 ~ 61:8 ~ 30:1 ~ 2, more preferably in 100 parts of solid fuels, the content of coal dust is 5 ~ 65 parts, and the content of petroleum coke powder is 30 ~ 65 parts, the content of biomass fuel powder is 3 ~ 33 parts, and the content of fuel dope is 0.5 ~ 5 part.
3. the arbitrary described solid fuel of claim 1 ~ 2, it is characterized in that, fuel dope is by limestone powder and husky the composition, preferred limestone powder and husky weight proportion are 0.5 ~ 3:7 ~ 10, be preferably 1 ~ 2:8 ~ 9, more preferably in 10 portions of fuel dopes, the content of limestone powder is 0.5 ~ 3 part, and husky content is 7 ~ 10 parts.
4. the arbitrary described solid fuel of claim 1 ~ 3, it is characterized in that, the maximum particle diameter of coal dust is less than the maximum particle diameter of petroleum coke powder, the maximum particle diameter of preferred coal dust is less than the maximum particle diameter 10 ~ 20% of petroleum coke powder, preferred coal dust is can be by the coal dust of 140 mesh sieves, most preferably coal dust is the coal dust that can pass through 170 mesh sieves, and preferably petroleum coke powder is can be by the petroleum coke powder of 120 mesh sieves, and most preferably petroleum coke powder is can be by the petroleum coke powder of 140 mesh sieves.
5. the arbitrary described solid fuel of claim 1 ~ 4, it is characterized in that, the biomass fuel powder is one or more blended powder of timber, stalk and rice husk, also preferably pass through the powder of hydrolysis, as in the water of pH4 ~ 6 through the powder of 115 ~ 126 ℃ of pyrohydrolysises, can most preferably be can be preferably by the powder of 40 mesh sieves by the powder of 50 mesh sieves.
6. the arbitrary described solid fuel of claim 1 ~ 5 is characterized in that, limestone powder is can be by the limestone powder of 40 mesh sieves; And/or sand is can be by the sand of 50 mesh sieves.
7. the arbitrary described solid-fuelled method of preparation claim 1 ~ 6 is characterized in that this method comprises,
(1) grinds out coal dust, petroleum coke powder, biomass fuel powder and fuel dope respectively, most preferably coal dust is can be by the coal dust of 170 mesh sieves, petroleum coke powder is the petroleum coke powder that can pass through 140 mesh sieves, and the biomass fuel powder is can be by the powder of 50 mesh sieves;
(2) mix coal dust, petroleum coke powder, biomass fuel powder and fuel dope.
8. the described method of claim 7 is characterized in that, fuel dope is by limestone powder and husky the composition, and preferred wherein limestone powder is the limestone powder that can pass through 40 mesh sieves, and/or sand is can be by the sand of 50 mesh sieves.
9. the arbitrary described solid-fuelled device for preparing claim 1 ~ 6, it comprises and grinds device, is respectively applied at least 4 (preferred 4) metering devices accepting coal dust, petroleum coke powder, biomass fuel powder and fuel dope and the mixing device that all links to each other with all metering devices, the optional e Foerderanlage that also comprises the filler bin that connects mixing device and dilute-phase pneumatic conveying device.
10. the purposes of arbitrary described solid fuel in the method for fusion cast glass of claim 1 ~ 6 is characterized in that, with described solid fuel with the air conveying glass furnace internal combustion that enters of dilute phase with fusion cast glass.
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| CN102146306A (en) * | 2010-11-19 | 2011-08-10 | 张家港华汇特种玻璃有限公司 | Fuel applicable to glass kiln and preparation method thereof |
| CN103771738A (en) * | 2014-01-22 | 2014-05-07 | 南昌赣亨行技术开发有限公司 | Process of calcining mixed fuel in white cement rotary kiln by using rice hull powder and petroleum coke powder |
| CN104673418A (en) * | 2015-01-21 | 2015-06-03 | 重庆大学 | Biomass briquette used for baking tobacco leaves and preparation method of biomass briquette |
| CN104694192A (en) * | 2014-12-30 | 2015-06-10 | 株洲醴陵旗滨玻璃有限公司 | Diversified composite fuel for glass kiln |
| CN112760150A (en) * | 2021-02-07 | 2021-05-07 | 杜振刚 | Treatment process for preparing solid fuel from kitchen waste |
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| CN104673418A (en) * | 2015-01-21 | 2015-06-03 | 重庆大学 | Biomass briquette used for baking tobacco leaves and preparation method of biomass briquette |
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| CN112760150A (en) * | 2021-02-07 | 2021-05-07 | 杜振刚 | Treatment process for preparing solid fuel from kitchen waste |
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