CN105527312A - Method for analyzing melting characteristics of biomass ash - Google Patents
Method for analyzing melting characteristics of biomass ash Download PDFInfo
- Publication number
- CN105527312A CN105527312A CN201610006897.8A CN201610006897A CN105527312A CN 105527312 A CN105527312 A CN 105527312A CN 201610006897 A CN201610006897 A CN 201610006897A CN 105527312 A CN105527312 A CN 105527312A
- Authority
- CN
- China
- Prior art keywords
- ash
- biomass
- temperature
- biomass ash
- characteristic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002028 Biomass Substances 0.000 title claims abstract description 85
- 238000002844 melting Methods 0.000 title claims abstract description 58
- 230000008018 melting Effects 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000000930 thermomechanical effect Effects 0.000 claims description 25
- 238000013459 approach Methods 0.000 claims description 20
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- 238000004458 analytical method Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 8
- 238000002309 gasification Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000012159 carrier gas Substances 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003570 air Substances 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000012956 testing procedure Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 15
- 238000005054 agglomeration Methods 0.000 abstract 1
- 230000002776 aggregation Effects 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 85
- 239000000523 sample Substances 0.000 description 30
- 239000010902 straw Substances 0.000 description 18
- 239000010883 coal ash Substances 0.000 description 10
- 235000017060 Arachis glabrata Nutrition 0.000 description 7
- 244000105624 Arachis hypogaea Species 0.000 description 7
- 235000010777 Arachis hypogaea Nutrition 0.000 description 7
- 235000018262 Arachis monticola Nutrition 0.000 description 7
- 241000209094 Oryza Species 0.000 description 7
- 235000007164 Oryza sativa Nutrition 0.000 description 7
- 240000008042 Zea mays Species 0.000 description 7
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 7
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 7
- 235000009973 maize Nutrition 0.000 description 7
- 235000020232 peanut Nutrition 0.000 description 7
- 235000009566 rice Nutrition 0.000 description 7
- 241000209140 Triticum Species 0.000 description 6
- 235000021307 Triticum Nutrition 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000011880 melting curve analysis Methods 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 potassium salt compound Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to the field of gasifying of biomass energy sources, in particular to a method for analyzing melting characteristics of biomass ash. The method uses a thermal mechanical analyzer to test, and specifically comprises the following steps of preparing a biomass ash sample, testing the melting characteristics of the biomass ash, and analyzing a curve of the melting characteristics of the biomass ash; respectively defining the feature temperature Ts of a biomass ash sintering phase and the feature temperature Tm of a biomass ash melting phase, and utilizing the feature temperatures to analyze and evaluate the melting characteristics of the biomass ash; utilizing the feature temperature Tm to predict the agglomeration flow loss temperature caused by the melting of the biomass ash in the combusting and gasifying processes of a fluidized bed. The method has the advantages that the melting characteristics of the biomass ash in the whole heating process can be continuously observed, and the change caused by the viscosity and temperature characteristics of the biomass ash under high-temperature condition can be presented in the test process, so that when a thermal mechanical analyzing method is used for testing the melting characteristics of the biomass ash, the melting characteristics of the biomass ash can be more objectively and comprehensively reflected; the repeatability is good, and the accuracy is high.
Description
Technical field
The present invention relates to biomass energy converting field, particularly, the present invention relates to a kind of method analyzed for biomass ash melting characteristic.
Background technology
Biomass energy absorbs CO in its growth course
2participate in the carbon cycle in air, can realize the zero-emission of greenhouse gases, as fuel, the sulphur in living beings, nitrogen content, far below coal and heavy oil, are a kind of eco-friendly renewable and clean energy resources.China is as large agricultural country, and annual agricultural crop straw annual production is about 7.5 hundred million tons, is equivalent to 3.75 hundred million tons of mark coals; Bavin firewood and the annual exploitable deposit of forestry waste resource reach more than 600,000,000 tons.But the annual residue agricultural crop straw because processing more than 200,000,000 tons in field directly burning amount, not only wastes stalk resource, generates a large amount of gray hazes simultaneously.Therefore, develop biomass energy and can promote rural economic development, alleviate China's energy crisis, alleviate environmental pollution.In biomass utilization technologies, living beings indirect gasification technology be considered to a kind of have a prospect produce hydrogen-rich combustion gas technology, this technology adopts using two-stage fluid bed, utilize solid thermal carriers for thermal source, under normal pressure reducing atmosphere condition, without the need to making oxygen by air separation, hydrogen and the higher medium calorific value gas of hydrocarbon content just can be obtained, therefore, receive much concern in gasification of biomass field in recent years.And living beings gasify and have that mixing of materials is even, the residence time is long soon, in the reactor, operating temperature is low and productive rate advantages of higher for reaction velocity in fluidized bed, be especially applicable to the biomass material that moisture is high, calorific value is low.But ash content is higher in stalk biomass fuel, and containing a large amount of alkali metal (potassium, sodium), and alkali metal compound has low-melting feature, bring problems to biomass conversion process, especially defluidizationization can be caused even to cause serious not fluidisation phenomenon because of clustering phenomena.Therefore, grasp the melting characteristic of biomass ash in gasification, can be final proposition and suppress the technical matters caused because of alkaline metal to find solution.
For biomass ash melting characteristic and predict its method sintered, the GB (GB/T30726-2014) of general reference coal ash melting temperatur: pyramid method, the method is when evaluating coal ash, define 4 kinds of characteristic temperatures, i.e. initial deformation temperature DT, softening temperature ST, hemispherical temperature HT and flow temperature FT, and using initial deformation temperature as sintering temperature predicted value, the method is according to ash sample pattern change records characteristic temperature, and the pattern change of ash sample cannot be recorded continuously, there is larger subjectivity; And show according to the experimental results, pyramid method is applicable to the higher sample of melt temperature.In addition, thermomechanical analysis TMA (thermo-mechanicalanalyzer) is mainly used for measuring the parameters such as the expansion coefficient of the material such as plastics, glass and phase transition temperature in early days, because passing through the melting characteristic of this assay method observable material in whole heating process, Zeng You researchist proposes to utilize thermomechanical analysis to measure the melting characteristic of coal ash.
But, in existing research, to utilizing thermomechanical analysis to measure coal ash process, concrete evaluation index is not proposed.And, with the composition of coal ash and content, there is significant difference, the composition of biomass ash and comparision contents complicated, have the advantages that the alkali metal contents such as potassium are higher, this causes biomass ash just to there will be melting phenomenon at a lower temperature.This characteristic of living beings, also determines the unworthiness that traditional pyramid method is analyzed biomass ash melting characteristic.Therefore, for biomass material, a kind of analytical approach and evaluation index of applicable mensuration biomass ash melting characteristic need be found.
Summary of the invention
The present invention is in order to solve the problem, and inventor proposes and completes the present invention.
The object of this invention is to provide a kind of analytical approach for biomass ash melting characteristic.
Analytical approach for biomass ash melting characteristic of the present invention utilizes thermomechanical analyzer to measure; Wherein, analytical procedure comprises: the preparation of living beings ash sample, the mensuration of biomass ash melting characteristic, the parsing of melting characteristic curve.
Particularly, the analytical approach for biomass ash melting characteristic of the present invention, comprises the following steps:
1) preparation of living beings ash sample: living beings ash sample is made in biomass material burning;
2) mensuration of biomass ash melting characteristic: utilize thermomechanical analyzer to step 1) obtained living beings ash sample tests, and generates biomass ash melting characteristic curve;
3) parsing of biomass ash melting characteristic curve: by analytical procedure 2) melting curve that obtains, determine that characteristic temperature is to evaluate the melting characteristic of biomass ash; Using contraction rate first time reach 0.1%/DEG C time corresponding temperature as biomass ash sintering characteristic temperature T
s; Using contraction rate second time be increased to 0.1%/DEG C time corresponding temperature as biomass ash melt stage characteristic temperature T
m; As shown in Figure 1;
4) with described biomass ash sintering characteristic temperature T
sevaluate or predict that biomass ash starts the characteristic temperature sintered; With described biomass ash melt stage characteristic temperature T
mevaluate or predict the characteristic temperature of the agglomerate defluidization caused by biomass ash melting in fluidized-bed combustion and gasification.
According to analytical approach of the present invention, wherein, step 1) step of described burning is as follows: 1-1) carried out by biomass material pulverizing, grinding, Task-size Controlling is at below 1mm; 1-2) burning system ash in combustion furnace; 1-3) obtained ash sample is carried out grinding to sieve, Task-size Controlling at below 0.1mm, and utilizes sheeter to carry out compressing tablet, makes sheet living beings ash sample.Combustion furnace of the present invention can be arbitrary type Small Combustion stove well known in the art, such as, preferably use muffle furnace.
According to analytical approach of the present invention, wherein, the grey process of described burning system is: by combustion furnace with heating rate 4 ~ 6 DEG C/min, rise to 250 DEG C and keep more than 40 minutes from room temperature; Then continue rise to 550 DEG C from 250 DEG C and keep more than 1.5 hours.
According to analytical approach of the present invention, wherein, step 2) described thermomechanical analyzer is to step 1) obtained sheet living beings ash sample carries out testing procedure and is: sample is put into test cabinet, passes into carrier gas; By thermomechanical analyzer with heating rate 2 ~ 30 DEG C/min, after rising to 550 DEG C from room temperature, then continue to be warming up to end with 1 ~ 6 DEG C/min.
According to analytical approach of the present invention, wherein, described carrier gas is air, oxygen, inert gas or reducing atmosphere.Described inert gas is nitrogen, helium or argon gas; Described reducing atmosphere is water vapor, hydrogen or CO.Preferably, carrier gas is argon gas or water vapor.
According to analytical approach of the present invention, preferably, the amount of the biomass ash sample utilizing thermomechanical analyzer to carry out testing is 30 ~ 70mg.
The present invention is applicable to various biomass material, such as various straw and various forest branch, woody Chai Xin etc., particularly, such as, and maize straw, wheat stalk, rice straw, peanut shell and branch etc.
The analytical approach of biomass ash melting characteristic of the present invention, its objective is and provide a kind of method to evaluate the temperature variant melting characteristic of biomass ash in biomass combustion and gasification.Therefore, build small-sized fluidized bed reactor in laboratory, and utilize the small-sized fluidized bed reactor built to investigate the change of biomass ash in bed in burning and gasification.Experiment for raw material, investigate the mistake fluidization characteristic of biomass ash, and the initial temperature defining bed pressure drop sudden change is agglomerate mistake stream temperature, with T with several stalk biomass by the change of bed pressure drop in record course of reaction
arepresent.
By comparing biomass ash agglomerate defluidization characteristic temperature T in mini-reactor
athe grey melting characteristic temperature T obtained with utilizing TMA
mknown, T
awith T
mwithin the scope of differing ± 10 DEG C, therefore, the T obtained by TMA can be utilized
mto predict that the agglomerate of biomass ash loses stream temperature.And shown by a large amount of results of laboratory, TMA accurately can record initial sintering temperature and the temperature of fusion of biomass samples, and be defined as biomass ash sintering phase characteristic temperature T
s(contraction rate first time reaches 0.1%/DEG C time corresponding temperature); Biomass ash melt stage characteristic temperature T
m(contraction rate second time is increased to 0.1%/DEG C time corresponding temperature).And, utilize TMA method can change the change of the ash softening point caused to sample component by sensitive measurement.
The invention has the advantages that:
1) compared with traditional coal ash meltbility assay method, the thermomechanical analysis that the present invention relates to can be used for observing the melting characteristic of ash in whole heating process, and the displacement of probe is also relevant to ash viscosity-temperature characteristic at high temperature in test, the melting characteristic of ash can be reflected better, present better repeatable and degree of accuracy; And traditional pyramid method is according to ash sample pattern change records characteristic temperature, and the pattern change of ash sample cannot be recorded continuously, there is larger subjectivity.
2) compared with the coal ash meltbility temperature obtained with pyramid method, the analytical approach of a kind of biomass ash melting characteristic that the present invention relates to, the characteristic temperature utilizing thermo-mechanical analysis method to obtain can evaluate the coal ash meltbility of biomass ash in burning and gasification more really, the characteristic temperature T especially obtained by TMA method
min order to prediction or can evaluate the temperature being caused agglomerate defluidization phenomenon by biomass ash melting, this provides data and theories integration for finally suppressing defluidization phenomenon in course of reaction to propose counte-rplan.
Accompanying drawing explanation
Fig. 1 is the melting curve of the biomass ash that the present invention utilizes thermomechanical analysis to obtain and the schematic diagram of characteristic temperature thereof, wherein, and T
sfor biomass ash sintering phase characteristic temperature, T
mfor biomass ash melt stage characteristic temperature.
Fig. 2 is the characteristic temperature (schematic diagram of embodiment 1 ~ 4) utilizing pyramid method and TMA method to measure several canonical biometric matter coal ash meltbility respectively to obtain, wherein, WS is wheat stalk, RS is rice straw, and PS is peanut shell, and CS is maize straw, DT is initial deformation temperature, ST is softening temperature, HT hemispherical temperature, and FT is flow temperature.
Fig. 3 is the melting curve of the known Melting Substance utilizing thermomechanical analysis to obtain.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
The melting characteristic that comparative example utilizes TMA method and pyramid method to measure biomass ash respectively compares
The TMA method that the present invention utilizes traditional pyramid method and the application to relate to respectively has investigated several characteristic temperatures of maize straw (CS), wheat stalk (WS), rice straw (RS), peanut shell (PS) coal ash meltbility, is respectively:
In table, △ T
1, △ T
2be expressed as: △ T
1=DT-T
s; △ T
2=ST-T
m.By found that, utilize the characteristic temperature T that TMA method obtains
s, T
mrespectively lower than the characteristic temperature DT (initial deformation temperature), the ST (softening temperature) that are obtained by pyramid method in table, show that biomass ash just sintering phenomenon is occurring lower than by pyramid method characteristic temperature DT, just melting phenomenon is occurring lower than characteristic temperature ST.Also showing further thus, there is comparatively big error in the characteristic temperature obtained according to ash sample pattern change records by pyramid method and the actual change occurred of ash sample.Therefore, the object of this invention is to provide a kind of analysis determining method being applicable to biomass ash melting characteristic, compared with the GB (pyramid method) of traditional ash softening point, measured the characteristic temperature of the biomechanical gray melting characteristic obtained by TMA method closer to the actual temperature change observed in experiment.
In order to verify that thermomechanical analysis measures the reliability that biomass ash melts characteristic further, simultaneously in conjunction with this feature higher of potassium content in biomass material, potassium salt compound (KCl, K of three kinds of known fusing points are selected
2cO
3, K
2sO
4) as a comparison, utilize TMA method to obtain respective melting curve (see Fig. 3) respectively and characteristic temperature is respectively:
From result, the characteristic temperature obtained by TMA method and the known fusing point of each material very close, temperature range is only ± 3 DEG C.Result can show thus, and the characteristic temperature being recorded pure material by TMA method is the fusing point of this material.
Embodiment 1 utilizes thermomechanical analysis to measure the melting characteristic (see Fig. 2-CS) of maize straw ash
Be raw material with maize straw, pulverized, ground 1mm sieves; In muffle furnace, rise to 250 DEG C with the heating rate of 5 DEG C/min from room temperature and keep 1hr, then continuing rise to 550 DEG C from 250 DEG C and keep 2hr, obtained ash sample; Ash sample grinding sieved, granularity is less than 0.1mm; Get 50mg ash sample and carry out compressing tablet, put into the test cabinet of thermomechanical analyzer; Pass into argon gas, rise to 550 DEG C with the heating rate of 20 DEG C/min from room temperature, then continue to be warming up to 1000 DEG C/min with 5 DEG C/min.By to melting curve analysis, obtain characteristic temperature: the sintering characteristic temperature T of maize straw ash
sbe 650 DEG C, the melt stage characteristic temperature T of maize straw ash
mit is 850 DEG C.And the characteristic temperature obtained by pyramid method is respectively: DT is 960 DEG C; ST is 1020 DEG C; HT is 1100 DEG C; FT is 1150 DEG C.
Embodiment 2 utilizes thermomechanical analysis to measure the melting characteristic (see Fig. 2-RS) of rice straw ash
Be raw material with rice straw, pulverized, ground 1mm sieves; In muffle furnace, rise to 250 DEG C with the heating rate of 4 DEG C/min from room temperature and keep 40 minutes, then continuing rise to 550 DEG C from 250 DEG C and keep 1.5hr, obtained ash sample; Ash sample grinding sieved, granularity is less than 0.1mm; Get 40mg ash sample and carry out compressing tablet, put into the test cabinet of thermomechanical analyzer; Pass into argon gas, rise to 550 DEG C with the heating rate of 2 DEG C/min from room temperature, then continue to be warming up to 1050 DEG C/min with 2 DEG C/min.By to melting curve analysis, obtain characteristic temperature: the sintering characteristic temperature T of rice straw ash
sbe 651 DEG C, the melt stage characteristic temperature T of rice straw ash
mit is 810 DEG C.And the characteristic temperature obtained by pyramid method is respectively: DT is 890 DEG C; ST is 970 DEG C; HT is 1010 DEG C; FT is 1040 DEG C.
Embodiment 3 utilizes thermomechanical analysis to measure the melting characteristic (see Fig. 2-PS) of peanut shell ash
Be raw material with peanut shell, pulverized, ground 1mm sieves; In muffle furnace, rise to 250 DEG C with the heating rate of 6 DEG C/min from room temperature and keep 2hr, then continuing rise to 550 DEG C from 250 DEG C and keep 3hr, obtained ash sample; Ash sample grinding sieved, granularity is less than 0.1mm; Get 70mg ash sample and carry out compressing tablet, put into the test cabinet of thermomechanical analyzer; Pass into argon gas, rise to 550 DEG C with the heating rate of 30 DEG C/min from room temperature, then continue to be warming up to 1250 DEG C/min with 6 DEG C/min.By to melting curve analysis, obtain characteristic temperature: the sintering characteristic temperature T of peanut shell ash
sbe 701 DEG C, the melt stage characteristic temperature T of peanut shell ash
mit is 865 DEG C.And the characteristic temperature obtained by pyramid method is respectively: DT is 890 DEG C; ST is 960 DEG C; HT is 1020 DEG C; FT is 1050 DEG C.
Embodiment 4 utilizes thermomechanical analysis to measure the melting characteristic (see Fig. 2-WS) of straw ash
Be raw material with wheat stalk, pulverized, ground 1mm sieves; In muffle furnace, rise to 250 DEG C with the heating rate of 5 DEG C/min from room temperature and keep 1hr, then continuing rise to 550 DEG C from 250 DEG C and keep 2hr, obtained ash sample; Ash sample grinding sieved, granularity is less than 0.1mm; Get 30mg ash sample and carry out compressing tablet, put into the test cabinet of thermomechanical analyzer; Pass into argon gas, rise to 550 DEG C with the heating rate of 20 DEG C/min from room temperature, then continue to be warming up to 1150 DEG C/min with 1 DEG C/min.By to melting curve analysis, obtain characteristic temperature: the sintering characteristic temperature T of wheat stalk ash
sbe 720 DEG C, the melt stage characteristic temperature T of wheat stalk ash
mit is 1100 DEG C.And the characteristic temperature obtained by pyramid method is respectively: DT is 1130 DEG C; ST is 1150 DEG C; HT is 1170 DEG C; FT is 1190 DEG C.
Certainly; the present invention can also have various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can openly make various corresponding change and modification according to of the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (8)
1., for an analytical approach for biomass ash melting characteristic, comprise the following steps:
1) preparation of living beings ash sample: living beings ash sample is made in biomass material burning;
2) mensuration of biomass ash melting characteristic: utilize thermomechanical analyzer to step 1) obtained living beings ash sample tests, and generates biomass ash melting characteristic curve;
3) parsing of biomass ash melting characteristic curve: by analytical procedure 2) melting curve that obtains, determine that characteristic temperature is to evaluate the melting characteristic of biomass ash; Using contraction rate first time reach 0.1%/DEG C time corresponding temperature as biomass ash sintering characteristic temperature T
s; Using contraction rate second time be increased to 0.1%/DEG C time corresponding temperature as biomass ash melt stage characteristic temperature T
m;
4) with described biomass ash sintering characteristic temperature T
sevaluate or predict that biomass ash starts the characteristic temperature sintered; With described biomass ash melt stage characteristic temperature T
mevaluate or predict the characteristic temperature of the agglomerate defluidization caused by biomass ash melting in fluidized-bed combustion and gasification.
2. analytical approach according to claim 1, is characterized in that, step 1) step of described burning is as follows: 1-1) carried out by biomass material pulverizing, grinding, Task-size Controlling is at below 1mm; 1-2) burning system ash in combustion furnace; 1-3) obtained ash sample is carried out grinding to sieve, Task-size Controlling at below 0.1mm, and utilizes sheeter to carry out compressing tablet, makes sheet living beings ash sample.
3. analytical approach according to claim 2, is characterized in that, the grey process of described burning system is: by combustion furnace with heating rate 4 ~ 6 DEG C/min, rise to 250 DEG C and keep more than 40 minutes from room temperature; Then continue rise to 550 DEG C from 250 DEG C and keep more than 1.5 hours.
4. analytical approach according to claim 1, is characterized in that, step 2) the described thermomechanical analyzer that utilizes is to step 1) obtained sheet living beings ash sample carries out testing procedure and is: sample is put into test cabinet, passes into carrier gas; By thermomechanical analyzer with heating rate 2 ~ 30 DEG C/min, after rising to 550 DEG C from room temperature, then continue to be warming up to end with 1 ~ 6 DEG C/min.
5. analytical approach according to claim 4, is characterized in that, described carrier gas is air, oxygen, inert gas or reducing atmosphere.
6. analytical approach according to claim 5, is characterized in that, described inert gas is nitrogen, helium or argon gas; Described reducing atmosphere is water vapor, hydrogen or CO.
7. analytical approach according to claim 6, is characterized in that, described carrier gas is argon gas or water vapor.
8., according to the arbitrary described analytical approach of claim 1-7, it is characterized in that, the amount of the biomass ash sample utilizing thermomechanical analyzer to carry out testing is 30 ~ 70mg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006897.8A CN105527312B (en) | 2016-01-04 | 2016-01-04 | A kind of analysis method for biomass ash melting characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006897.8A CN105527312B (en) | 2016-01-04 | 2016-01-04 | A kind of analysis method for biomass ash melting characteristic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105527312A true CN105527312A (en) | 2016-04-27 |
| CN105527312B CN105527312B (en) | 2019-04-23 |
Family
ID=55769668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610006897.8A Expired - Fee Related CN105527312B (en) | 2016-01-04 | 2016-01-04 | A kind of analysis method for biomass ash melting characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105527312B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248536A (en) * | 2016-09-30 | 2016-12-21 | 宁波诺丁汉新材料研究院有限公司 | A kind of assay method of ash fusibility characteristic curve |
| CN107449526A (en) * | 2017-04-20 | 2017-12-08 | 清华大学 | A kind of method for the suitable outlet temperature of burner hearth for determining biomass fired boiler |
| CN108519301A (en) * | 2018-03-12 | 2018-09-11 | 沈阳环境科学研究院 | It is a kind of to utilize thermogravimetric analyzer evaluation coal and the reactive method of biomass char |
| CN109490189A (en) * | 2018-12-29 | 2019-03-19 | 中国科学技术大学 | A kind of low temperature test device based on dynamic thermomechanical analysis apparatus |
| CN113848152A (en) * | 2021-09-02 | 2021-12-28 | 山东东岳高分子材料有限公司 | Method for measuring melt viscosity of fluorine-containing polymer |
| CN115790897A (en) * | 2022-11-15 | 2023-03-14 | 中国矿业大学 | Method for predicting operating temperature of entrained flow gasifier |
| CN113848152B (en) * | 2021-09-02 | 2024-05-14 | 山东东岳高分子材料有限公司 | Method for measuring melt viscosity of fluorine-containing polymer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10123073A (en) * | 1996-10-23 | 1998-05-15 | Rigaku Corp | Thermomechanical analyzer |
| CN1846205A (en) * | 2003-07-04 | 2006-10-11 | 梅特勒-托莱多有限公司 | Method and device for a thermoanalytical material analysis |
| JP2009192416A (en) * | 2008-02-15 | 2009-08-27 | Shimadzu Corp | Thermal analyzer |
| CN103308416A (en) * | 2012-03-06 | 2013-09-18 | 精工电子纳米科技有限公司 | Thermal analyzer |
| CN103760187A (en) * | 2014-01-22 | 2014-04-30 | 天津工业大学 | Compressing model sample disc for dynamic thermal mechanical analyzer |
| US20150153292A1 (en) * | 2013-12-04 | 2015-06-04 | Hitachi High-Tech Science Corporation | Thermal Analyzer |
| CN204882419U (en) * | 2015-08-12 | 2015-12-16 | 中山市点石塑胶有限公司 | Thermomechanical analysis appearance |
-
2016
- 2016-01-04 CN CN201610006897.8A patent/CN105527312B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10123073A (en) * | 1996-10-23 | 1998-05-15 | Rigaku Corp | Thermomechanical analyzer |
| CN1846205A (en) * | 2003-07-04 | 2006-10-11 | 梅特勒-托莱多有限公司 | Method and device for a thermoanalytical material analysis |
| JP2009192416A (en) * | 2008-02-15 | 2009-08-27 | Shimadzu Corp | Thermal analyzer |
| CN103308416A (en) * | 2012-03-06 | 2013-09-18 | 精工电子纳米科技有限公司 | Thermal analyzer |
| US20150153292A1 (en) * | 2013-12-04 | 2015-06-04 | Hitachi High-Tech Science Corporation | Thermal Analyzer |
| CN103760187A (en) * | 2014-01-22 | 2014-04-30 | 天津工业大学 | Compressing model sample disc for dynamic thermal mechanical analyzer |
| CN204882419U (en) * | 2015-08-12 | 2015-12-16 | 中山市点石塑胶有限公司 | Thermomechanical analysis appearance |
Non-Patent Citations (2)
| Title |
|---|
| A.A. TORTOSA MASIA等: ""Use of TMA to predict deposition behavior of biomass fuels"", 《FUEL》 * |
| 唐菊: ""秸秆类生物质灰熔特性实验研究"", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248536A (en) * | 2016-09-30 | 2016-12-21 | 宁波诺丁汉新材料研究院有限公司 | A kind of assay method of ash fusibility characteristic curve |
| CN106248536B (en) * | 2016-09-30 | 2019-03-05 | 宁波诺丁汉新材料研究院有限公司 | A kind of measuring method of ash fusibility indicatrix |
| CN107449526A (en) * | 2017-04-20 | 2017-12-08 | 清华大学 | A kind of method for the suitable outlet temperature of burner hearth for determining biomass fired boiler |
| CN107449526B (en) * | 2017-04-20 | 2019-05-03 | 清华大学 | A kind of burner hearth of determining biomass fired boiler is suitable for the method for outlet temperature |
| CN108519301A (en) * | 2018-03-12 | 2018-09-11 | 沈阳环境科学研究院 | It is a kind of to utilize thermogravimetric analyzer evaluation coal and the reactive method of biomass char |
| CN109490189A (en) * | 2018-12-29 | 2019-03-19 | 中国科学技术大学 | A kind of low temperature test device based on dynamic thermomechanical analysis apparatus |
| CN109490189B (en) * | 2018-12-29 | 2024-05-07 | 中国科学技术大学 | Low-temperature experimental device based on dynamic thermo-mechanical analyzer |
| CN113848152A (en) * | 2021-09-02 | 2021-12-28 | 山东东岳高分子材料有限公司 | Method for measuring melt viscosity of fluorine-containing polymer |
| CN113848152B (en) * | 2021-09-02 | 2024-05-14 | 山东东岳高分子材料有限公司 | Method for measuring melt viscosity of fluorine-containing polymer |
| CN115790897A (en) * | 2022-11-15 | 2023-03-14 | 中国矿业大学 | Method for predicting operating temperature of entrained flow gasifier |
| CN115790897B (en) * | 2022-11-15 | 2023-08-18 | 中国矿业大学 | Method for predicting operation temperature of entrained flow gasifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105527312B (en) | 2019-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105527312A (en) | Method for analyzing melting characteristics of biomass ash | |
| Lin et al. | Investigation of the intrinsic CO2 gasification kinetics of biomass char at medium to high temperatures | |
| Davidsson et al. | Alkali emission from birchwood particles during rapid pyrolysis | |
| Wang et al. | A study on coal properties and combustion characteristics of blended coals in northwestern China | |
| Lewis et al. | Prediction of sawdust pyrolysis yields from a flat-flame burner using the CPD model | |
| Nanou et al. | Detailed mapping of the mass and energy balance of a continuous biomass torrefaction plant | |
| Jahirul et al. | Biofuels production through biomass pyrolysis—a technological review | |
| Chen et al. | Isothermal and non-isothermal torrefaction characteristics and kinetics of microalga Scenedesmus obliquus CNW-N | |
| Babu | Biomass pyrolysis: a state‐of‐the‐art review | |
| Hernández et al. | Gasification of biomass wastes in an entrained flow gasifier: Effect of the particle size and the residence time | |
| Akay et al. | Gasification of fuel cane bagasse in a downdraft gasifier: influence of lignocellulosic composition and fuel particle size on syngas composition and yield | |
| Shurtz et al. | Coal swelling model for high heating rate pyrolysis applications | |
| Parthasarathy et al. | Determination of kinetic parameters of biomass samples using thermogravimetric analysis | |
| Zhu et al. | Ash fusion characteristics and transformation behaviors during bamboo combustion in comparison with straw and poplar | |
| Duan et al. | Insight into torrefaction of woody biomass: Kinetic modeling using pattern search method | |
| Mishra et al. | A comparative study on pyrolysis kinetics and thermodynamic parameters of little millet and sunflower stems biomass using thermogravimetric analysis | |
| Strandberg et al. | Effects of pyrolysis conditions and ash formation on gasification rates of biomass char | |
| Tran et al. | Isothermal and non-isothermal kinetic study on CO2 gasification of torrefied forest residues | |
| Feldmeier et al. | Applicability of fuel indexes for small-scale biomass combustion technologies, part 1: Slag formation | |
| Benanti et al. | Simulation of olive pits pyrolysis in a rotary kiln plant | |
| Öhman et al. | Residential combustion performance of pelletized hydrolysis residue from lignocellulosic ethanol production | |
| Zhu et al. | Pyrolysis characteristics of bean dregs and in situ visualization of pyrolysis transformation | |
| Athira et al. | Thermochemical conversion of sugarcane bagasse: composition, reaction kinetics, and characterisation of by-products | |
| Volpe et al. | Catalytic effect of char for tar cracking in pyrolysis of citrus wastes, design of a novel experimental set up and first results | |
| Dai et al. | Pelletization of carbonized wood using organic binders with biomass gasification residue as an additive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190423 |