CN105969471A - Less-smog high-heat energy biomass briquette fuel and production method thereof - Google Patents

Abstract

The invention discloses a less-smog high-heat energy biomass briquette fuel. According to the invention, the pretreated corn straws are taken as a raw material for anaerobic fermentation for 10-20 days, so that mechanical endurance of the briquette fuel is increased, increase of relative amount of lignin is in favor of compression moulding of the straws, content of the volatile compounds is reduced, and decrease of a benzene-alcohol extract is in favor of increasing mechanical endurance of the briquette fuel. According to the invention, magnesium carbonate is taken as an anti-slagging agent, during a combustion process, the Mg element and elements such as Si, K, and Na which are inherent in the corn straws and are capable of slagging are subjected to a reaction, a novel compound K2Mg(SO4)2 is generated and provides anti-slagging performance to the briquette fuel, waste diesel oil taking as an ignition-assisting agent is capable of increasing the combustion efficiency and heat energy of the fuel, and the produced briquette fuel has the advantages of less smog, high heat energy and good fuel performance.

Description

Biomass molding fuel that the few heat energy of a kind of smog is high and preparation method thereof

Technical field

The present invention relates to biomass fuel technical field, particularly relate to the biomass molding fuel that the few heat energy of a kind of smog is high And preparation method thereof.

Background technology

Biomass energy because it is renewable, aboundresources, environmental friendliness and become world's fourth largest energy, be also the most permissible Transport and the clean reproducible energy stored, mainly by the biomass energy technology modernized by agricultural wastes, felling Residue, feces of livestock and poultry, MSW, sanitary sewage become biological particles to fire with Raw material processings such as industrial organic waste waters The end products such as material, biodiesel, bio-fuel ethanol.Biomass fuel is discharged almost without SO2 during later-stage utilization, Decrease the acid rain caused by flue gas and the harm of greenhouse effect produced during it utilizes so that biomass energy has The most wide application prospect and development space, thus Developing Biomass fuel has become the mankind and has solved energy problem and improve ring One important means in border and developing direction.China is large agricultural country, and biomass resource enriches, the yield of annual agricultural crop straw More than 700,000,000 t, wherein amount usable is about 5.055 hundred million t, accounts for the 50%-60% of Chinese biological matter total resources, therefore, converts it Utilize significant.The raw materials such as agricultural crop straw exist loosely organized, density is little, distribution is not concentrated, the thermal efficiency is low, inconvenient Many defects such as transport and storage, are unfavorable for utilizing on a large scale, utilize mechanical force that compressed biomass or extruding are become density relatively Greatly, the thermal efficiency is high, it is simple to the solid fuel of transport storage is the most relatively advanced a kind of biomass economy mode.

It is tight to there is equipment attrition for straw compressing and forming in " molding fuel test is prepared in stalk anaerobic fermentation modification " literary composition The antibiont degraded barrier that weight and anaerobic fermentation face, it is proposed that the thinking of shaped fuel is prepared in a kind of stalk anaerobic fermentation modification And carried out experimental study.With corn straw as raw material in literary composition, the anaerobism that raw material carries out 10d and 20 d respectively by a definite date is sent out Ferment, the biogas residue after fermentation size-reduced and dried in 100 DEG C, be compressed into the granular fuel of diameter 10 mm under the conditions of 6 MPa. Result of the test shows: after stalk anaerobic fermentation, and the energy being retained in biogas residue is more than the energy transferred in biogas, straw biogas residue Energy value high, but after fermentation 20 d, straw content of ashes is 3 times of non-fermented stalk, and its clinkering property may be made to increase By force, the shaped fuel calorific value and prepared in literary composition only improves about 5.82% than raw material, it is impossible to meets blast furnace or has high heating value demand Place, and exist when small-sized cooking stove misfire, the problem such as the length duration of ignition and smoke pollution, efficiency of combustion is low, Need in addition modified to obtain high heating value, the novel biomass shaped fuel of resistive connection slag.

Summary of the invention

The object of the invention is contemplated to make up the defect of prior art, it is provided that the biomass moulding that the few heat energy of a kind of smog is high Fuel and preparation method thereof.

The present invention is achieved by the following technical solutions:

The biomass molding fuel that the few heat energy of a kind of smog is high, is prepared by the raw materials in: corn straw 100, distiller grains 10-12, baccy fiber element 15-17, sepiolite cashmere 18-20, magnesium carbonate 3-5, aluminium oxide 2-4, used oil 7-9, black shale 5- 7, triple superphosphate 16-18, citric acid 1-2, dimethyldiethoxysilane 2.4-2.6, nano ferriferrous oxide 0.6-0.8, suitable quantity of water.

The manufacture method of the biomass molding fuel that the few heat energy of described a kind of smog is high, comprises the following steps:

(1) citric acid is added water stirring to being completely dissolved, add black shale impregnate 10-12 hour, take out in 105 DEG C of baking ovens Drying is pulverized, and adds used oil, dimethyldiethoxysilane mixing, is warming up to 80-90 DEG C, adds nanometer four and aoxidize three Ferrum ultrasonic grinding 10-15 minute, is spray-dried and prepares combustion adjuvant；

(2) triple superphosphate 5-10wt% hydrochloric acid solution is soaked 1-2 hour, with hot wash to without chloride ion, add water in 80-100 DEG C Lower ultrasonic Treatment 8-10 minute, dries, and adds aluminium oxide roasting 2-4 hour at 650-750 DEG C, is cooled to grinding at room temperature system Obtain modified heavy calcium carbonate powder；

(3) by corn straw with hot-water soak 10-12 hour of 60-70 DEG C, filter and put in fermentation vat, control fermentation vat temperature At 30-50 DEG C, humidity is 50-60%, and anaerobic fermentation processes 20-30 hour, adds modified heavy calcium carbonate powder, distiller grains and stirs isolation Air continues fermentation 10-20 days, filtering drying, puts into and is crushed to 60-80 mesh in pulverizer；

(4) by step (3) material, baccy fiber element, sepiolite cashmere stirring and evenly mixing, combustion adjuvant, water and other residual components are added Mixing, sends into single lead screw ex truding briquetting machine, is squeezed into a diameter of 5-8mm, the cylinder of a length of 3-8cm with the briquetting pressure of 6MPa Grain, is dried, discharging.

The invention have the advantage that the anaerobism that the present invention carries out 10-20d by a definite date with pretreated corn straw for raw material is sent out After ferment, the relative amount of stalk hemicellulose and cellulose reduces, and lignin relative amount increases and is conducive to straw compressing and forming, Volatile matter content reduces, and alcohol benzene extractive declines the mechanical endurance being conducive to improving shaped fuel, finally by biogas residue drying Being combined resistive connection slag agent and combustion adjuvant and the compression forming under the conditions of 6MPa of other effective ingredient after pulverizing, this preparation process molding is fast Little the contributing to of desirable pressure reduces forming process equipment attrition；The present invention is using magnesium carbonate as resistive connection slag agent, in combustion In Mg element and corn straw, the element such as Si, K, Na intrinsic, that can cause slagging scorification there occurs reaction, generates new chemical combination Thing K₂Mg(SO₄)₂And make it have anti-slagging properties, improve the efficiency of combustion of fuel as firing combustion adjuvant using used oil etc. And heat energy, the few heat energy of the shaped fuel smog of preparation is high, fuel performance is good.

Detailed description of the invention

The biomass molding fuel that the few heat energy of a kind of smog is high, is prepared by the raw materials in: corn straw 100, Distiller grains 10, baccy fiber element 15, sepiolite cashmere 18, magnesium carbonate 3, aluminium oxide 2, used oil 7, black shale 5, triple superphosphate 16, Fructus Citri Limoniae Acid 1, dimethyldiethoxysilane 2.4, nano ferriferrous oxide 0.6, suitable quantity of water.

The manufacture method of the biomass molding fuel that the few heat energy of described a kind of smog is high, comprises the following steps:

(1) citric acid is added water stirring to being completely dissolved, add black shale impregnate 10-12 hour, take out in 105 DEG C of baking ovens Drying is pulverized, and adds used oil, dimethyldiethoxysilane mixing, is warming up to 80-90 DEG C, adds nanometer four and aoxidize three Ferrum ultrasonic grinding 10-15 minute, is spray-dried and prepares combustion adjuvant；

(2) triple superphosphate 5-10wt% hydrochloric acid solution is soaked 1-2 hour, with hot wash to without chloride ion, add water in 80-100 DEG C Lower ultrasonic Treatment 8-10 minute, dries, and adds aluminium oxide roasting 2-4 hour at 650-750 DEG C, is cooled to grinding at room temperature system Obtain modified heavy calcium carbonate powder；

(3) by corn straw with hot-water soak 10-12 hour of 60-70 DEG C, filter and put in fermentation vat, control fermentation vat temperature At 30-50 DEG C, humidity is 50-60%, and anaerobic fermentation processes 20-30 hour, adds modified heavy calcium carbonate powder, distiller grains and stirs isolation Air continues fermentation 10-20 days, filtering drying, puts into and is crushed to 60-80 mesh in pulverizer；

(4) by step (3) material, baccy fiber element, sepiolite cashmere stirring and evenly mixing, combustion adjuvant, water and other residual components are added Mixing, sends into single lead screw ex truding briquetting machine, is squeezed into a diameter of 5-8mm, the cylinder of a length of 3-8cm with the briquetting pressure of 6MPa Grain, is dried, discharging.

The technical parameter index using the biomass molding fuel of present invention production is as follows:

(1) relaxed density is 1.187g/cm³；

(2) sulfur content: 0.299%；

(3) ash: 5.58%；

(4) calorific value: 26.08MJ/kg.

Claims (2)

1. the biomass molding fuel that the few heat energy of smog is high, it is characterised in that be prepared by the raw materials in: Semen Maydis Straw 100, distiller grains 10-12, baccy fiber element 15-17, sepiolite cashmere 18-20, magnesium carbonate 3-5, aluminium oxide 2-4, used oil 7- 9, black shale 5-7, triple superphosphate 16-18, citric acid 1-2, dimethyldiethoxysilane 2.4-2.6, nano ferriferrous oxide 0.6-0.8, suitable quantity of water.

The manufacture method of the biomass molding fuel that the few heat energy of a kind of smog the most according to claim 1 is high, its feature exists In comprising the following steps:

(1) citric acid is added water stirring to being completely dissolved, add black shale impregnate 10-12 hour, take out in 105 DEG C of baking ovens Drying is pulverized, and adds used oil, dimethyldiethoxysilane mixing, is warming up to 80-90 DEG C, adds nanometer four and aoxidize three Ferrum ultrasonic grinding 10-15 minute, is spray-dried and prepares combustion adjuvant；

(2) triple superphosphate 5-10wt% hydrochloric acid solution is soaked 1-2 hour, with hot wash to without chloride ion, add water in 80-100 DEG C Lower ultrasonic Treatment 8-10 minute, dries, and adds aluminium oxide roasting 2-4 hour at 650-750 DEG C, is cooled to grinding at room temperature system Obtain modified heavy calcium carbonate powder；

(3) by corn straw with hot-water soak 10-12 hour of 60-70 DEG C, filter and put in fermentation vat, control fermentation vat temperature At 30-50 DEG C, humidity is 50-60%, and anaerobic fermentation processes 20-30 hour, adds modified heavy calcium carbonate powder, distiller grains and stirs isolation Air continues fermentation 10-20 days, filtering drying, puts into and is crushed to 60-80 mesh in pulverizer；

(4) by step (3) material, baccy fiber element, sepiolite cashmere stirring and evenly mixing, combustion adjuvant, water and other residual components are added Mixing, sends into single lead screw ex truding briquetting machine, is squeezed into a diameter of 5-8mm, the cylinder of a length of 3-8cm with the briquetting pressure of 6MPa Grain, is dried, discharging.