CN104479793A - Composite flux for reducing fine coal gasification ash melting point temperature - Google Patents
Composite flux for reducing fine coal gasification ash melting point temperature Download PDFInfo
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Abstract
The invention discloses a composite flux for reducing a fine coal gasification ash melting point temperature and belongs to the field of fluxes. The composite flux is obtained by mixing of papermaking sludge powder and limestone powder according to a ratio of 1: 1 to 3: 1. The papermaking sludge powder contains organic matters, has air-dried base heat of 800-1000 kcal/kg and alkaline oxide mass content more than 50% and comprises, by mass, 40-56% of CaO, 3-12% of MgO, 3-12% of Al2O3, 9-15% of Fe2O3, 14-20% of SiO2, less than 3% of SO3, less than 0.8% of TiO, less than 1% of each one of alkali metal oxides and a small amount of impurities. The composite flux can effectively reduce a coal ash melting point, realize resource utilization of papermaking sludge waste and realize utilization of papermaking sludge heat.
Description
Technical field
The invention belongs to fusing assistant field.
Background technology
Current entrained flow bed gasification technology has become both at home and abroad on a large scale, the one preferred technique of high-level efficiency gasification, its deslagging mode mainly slag tap.Slag tap requires that the yield temperature of ash is less than 1400 DEG C, and ash fusion point is too high, can reduce refractory life, normally runs bring many problems to device.Rich coal resources in China, has a large amount of coal to be high-ash-fusion coal.Also slag tap gasifying process can be applied in order to make high-ash-fusion coal, generally by add fusing assistant that economy is easy to get or with the low coal of coal ash melting temperature with certain proportion with the use of reducing grey melt temperature, wherein, the fusing assistant that interpolation economy is easy to get can be considered one of cost-effective feasible measure.
The current vapourizing furnace method of adding non-flammable Wingdale that adopts reduces coal ash fusion temperature more, but Wingdale interpolation is excessive easily causes stifled slag.As an alternative, the fusing assistant reducing coal ash has investigator and has carried out large quantity research, there are the fusing assistants such as calcium base, iron-based, magnesium base and sodium base, add the various pure compound, mixture, ore etc. being rich in basic oxide such as basic oxide ore powder as fusing assistant.Being added on of these fusing assistants can reduce coal fusion point of ash in varying degrees effectively.If publication number is the patent of invention that CN1970698 discloses " a kind of fusing assistant reducing coal ash fusion temperature and preparation method thereof ", fusing assistant described in it is that described fusing assistant has following component (% by weight): CaCO for reducing producing the ash fusion point of lime-ash in coal gasification course and the additive added in coal
382% ~ 93%; Fe
2o
32% ~ 16%, surplus is MgCO
3.This fusing assistant is evenly mixed in coal, can change its ash melting characteristic in gasification, reduces ash fusion point and ash viscosity, thus lime-ash is discharged in liquid form smoothly.For another example publication number is that CN102304409A discloses " a kind of fusing assistant improving gasified pulverized coal slag melting ", it adopts the straw ash being rich in basic oxide as solubility promoter, and the composition of described straw ash fusing assistant and content are the alkalimetal oxide,>=SiO of 23.48% of 5.00% ~ 40% by important ratio
2the TiO of ,≤2.63%
2the Fe of ,≤14.14%
2o
3the CaO of,>=1.34%, surplus are MgO.Its fusing assistant has two typical characteristics: one is have higher silica/alumina ratio: 7.00 ~ 80.00; Two is that the content of alkalimetal oxide is higher: 5.00% ~ 40.00%.This fusing assistant can improve the characteristic of gasified pulverized coal slag melting, reduces coal ash fusion temperature.For another example publication number is that 101665737A discloses " a kind of efficient composite fluxing agent improving melting characteristic of gasified pulverized coal slag ", this efficient composite fluxing agent contains basic oxide ore powder by two or more and is composited, i.e. content of MgO 12% ~ 30%, CaO content 3% ~ 30% in fusing assistant.For Wan Bei mining area coal, when addition is 2% ~ 6%, coal ash melting temperature can be made to be reduced to less than 1400 DEG C from 1500 DEG C, viscosity is within the scope of 2 ~ 25PaS, effective melting characteristic improving Wan Bei mining area coal, this fusing assistant can be used for alternative limestone flux, and addition is only the half of Wingdale.
Paper mill sludge is that a large amount of wastes produced in various paper product process are being manufactured in paper mill, refer to throw out, particulate matter and the floating matter with producing after the process waste water such as Physical, chemical method, physico-chemical processes and biological process, paper mill sludge is the end product of wastewater treatment in pulping and papermaking processes.According to Chinese papermaking association statistics, Chinese paper in 2010 and cardboard ultimate production 9,270 ten thousand tons, consumption 9,173 ten thousand tons, the residue that the whole industry produces wets about 900 ~ 1,000 ten thousand tons, mud.Along with production and the rapid development of economy of China's paper industry, the quantity of papermaking enterprise increases year by year, and scale is increasing, and the generation of paper mill sludge also increases sharply.The treatment process of China to paper mill sludge has landfill, compost and burning.Current mode disposed its process, mainly based on landfill, only has part to be fully utilized, not only wastes a large amount of land resources, but also can produce secondary pollution.
Summary of the invention
The object of the invention is to: propose a kind of composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature, using paper mill sludge and Wingdale compound as fusing assistant, both effectively coal ash fusion temperature can be reduced, high-ash-fusion coal is made also to go for slag tap vapourizing furnace, widen the use range of high-ash-fusion coal, add the Suitability of Coals of slag tap vapourizing furnace, achieve again the utilization of waste as resource of paper mill sludge, make use of again the heat of paper mill sludge simultaneously, reach the object of economizing on coal, killing three birds with one stone; Meanwhile, this composite auxiliary solvent adopts less consumption can reduce ash fusion point temperature significantly, both decreases amount of lime, turn avoid the problem of the simple stifled slag adopting Wingdale to bring.
The chemical composition of coal ash is very complicated, and mainly salt and various metal and nonmetal oxide, mainly contain silicon-dioxide (SiO
2), alchlor (Al
2o
3), ferric oxide (Fe
2o
3), calcium oxide (CaO), magnesium oxide (MgO), manganese oxide (MnO), titanium dioxide (TiO
2), Vanadium Pentoxide in FLAKES (P
2o
5), sulphur trioxide (SO
3), potassium oxide (K
2o), sodium oxide (Na
2o) etc.According to the ionic potential of metal ion in coal ash chemical composition, oxide compound can be divided into two large classes, i.e. basic oxide (Fe
2o
3, MgO, CaO, Na
2o, K
2and acidic oxide (SiO O)
2, Al
2o
3, TiO
2).Atmosphere one timing residing for coal ash, have certain relation between ash fusion point and components of coal ash, when typically in ash, the content of acidic oxide is greater than basic oxide content, coal ash melting temperature is higher; On the contrary, coal ash melting temperature is lower.
Therefore, all utilize various basic oxide and composition thereof as solubility promoter in prior art, but the problem that prior art never solves is: be conducive to reducing ash fusion point as solubility promoter although typically add basic oxide, but add which kind of basic oxide and composition thereof, and the basic oxide mixture of which kind of proportions, and even basic oxide and other materials how compound, can with minimum addition, realize maximum ash fusion point temperature to reduce? conclusion is never had: various solubility promoters as mentioned in the background in prior art, its composition is similar, but result differs very large, co-solvent components, have no rule between proportioning and reduction ash fusion point temperature effect can say.
And, also there is a problem in the solubility promoter of prior art: typically, solubility promoter addition is larger, and ash fusion point temperature decline degree is larger, therefore, for the raw coal that some ash fusion point temperature is higher, usually need the solubility promoter adding more amount, but solubility promoter not again The more the better, such as the most frequently used Wingdale, after addition reaches certain proportion, on the contrary along with the interpolation of Wingdale, ash fusion point temperature significantly promotes.Therefore, in prior art, the interpolation of solubility promoter is not easily held, and also constrains effective use of solubility promoter to a certain extent.
Due to environmental requirement, paper mill sludge must process, and in prior art, is all confined to landfill, compost and burning to the treatment process of paper mill sludge, there are no other process or Land use systems.And the present inventor finds in research, test: gasification altogether after by paper mill sludge and coal Homogeneous phase mixing, coal ash can be improved in gasification, reduce coal ash fusion temperature, lime-ash is discharged in liquid form smoothly.After further study, its reason may be the basic cpd having high level in paper mill sludge, also unexpected discovery simultaneously, although the acidic cpd also containing high level in paper mill sludge, but it creates high ash melting point raw coal suitability widely on the contrary, better ash fusion point temperature regulating power: ash fusion point temperature can be reduced to 1380 DEG C from > 1450 DEG C by the addition as 6%, even ash fusion point temperature can be reduced to 1282 DEG C from > 1450 DEG C at the addition of 10%, and addition unrestriction: namely no matter how high addition is, all can not there are other unfavorable problems such as ash fusion point improves on the contrary.
For the concrete reason occurring aforementioned unforeseeable good result, there is not research conclusion at present, but can certainly relevant with the specific composition of the paper mill sludge that the present invention adopts (paper mill sludge of the present invention has high calcium, and the silicon of low levels, iron, aluminium, the more magnesium of low levels, and the special proportioning of a small amount of sodium, potassium and manganese).
And by paper mill sludge with after the further compound of Wingdale, its flexible ratio, Suitability of Coals is strong, respond well, easy to use; Can effectively alleviate or avoid current vapourizing furnace to adopt merely to add the method for Wingdale to reduce coal ash fusion temperature, easily produce and add too much and cause the problem of stifled slag; Composite auxiliary solvent addition reduces as the addition of fusing assistant than simple Wingdale and the simple paper mill sludge that uses of using.
Based on foregoing teachings, make the present invention thus.
The object of the invention is realized by following technical proposals:
A kind of composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature, described fusing assistant is mixed with the ratio of 1:1 ~ 3:1 by paper mill sludge powder sample and limestone powder sample, described paper mill sludge contains organism, empty butt thermal value is 800 kilocalories/kg ~ 1000 kilocalorie/kg, basic oxide mass content more than 50%, its chemical composition and mass content thereof are: CaO 40% ~ 56%, MgO 3% ~ 12%, Al
2o
33% ~ 12%, Fe
2o
39% ~ 15%, SiO
214% ~ 20%, SO
3< 3%, TiO
2< 0.8%, and mass content is the alkalimetal oxide of less than 1% and a small amount of impurity.
As selection, composite auxiliary solvent chemical composition and mass content thereof consist of: CaO 52% ~ 56%, MgO 2% ~ 9%, Al
2o
32% ~ 9%, Fe
2o
35% ~ 15%, SiO
210% ~ 18%, TiO
20.15 ~ 0.3%, K
2o 0.1% ~ 0.2%, Na
2o 0.05% ~ 0.2%, SO
30.8% ~ 1.6%, MnO 0.02% ~ 0.08% and a small amount of impurity.
Described impurity is generally the heavy metals such as P, Li, Pb, and total content is usually below 1.2%.
As further selection, described fusing assistant is mixed with the ratio of mass ratio 1:1 by paper mill sludge powder sample and limestone powder sample.
Select further as another, described fusing assistant is mixed with the ratio of mass ratio 2:1 by paper mill sludge powder sample and limestone powder sample.
Select further as another, described fusing assistant is mixed with the ratio of mass ratio 4:3 by paper mill sludge powder sample and limestone powder sample.
Select further as another, described fusing assistant is mixed with the ratio of mass ratio 3:1 by paper mill sludge powder sample and limestone powder sample.
Select further as another, described fusing assistant is mixed with the ratio of mass ratio 3:2 by paper mill sludge powder sample and limestone powder sample.
Beneficial effect of the present invention: composite fluxing agent of the present invention can with altogether gasification after coal Homogeneous phase mixing, coal ash can be improved in gasification, reduce coal ash fusion temperature, lime-ash is discharged in liquid form smoothly, make high ash melting point coal sample also go for the vapourizing furnace application of slag tap technology, widen the Suitability of Coals of slag tap technology vapourizing furnace.
Also be fuel while that in composite fluxing agent of the present invention, paper mill sludge being fusing assistant.In gasification, it can meet while existing slag tap gasification technology requires coal ash fusion temperature in the slag characteristic improving high-melting-point coal, can reach the object of economizing on coal.
Adopt composite fluxing agent of the present invention, its flexible ratio, Suitability of Coals is strong, respond well, easy to use; Can effectively alleviate or avoid current vapourizing furnace to adopt merely to add the method for Wingdale to reduce coal ash fusion temperature, easily produce and add too much and cause the problem of stifled slag; Composite auxiliary solvent addition reduces as the addition of fusing assistant than simple Wingdale and the simple paper mill sludge that uses of using.
Paper mill sludge is that a large amount of mud produced in various paper product process are being manufactured in paper mill, and along with production and the rapid development of economy of China's paper industry, the generation of paper mill sludge also increases sharply.The treatment process of China to paper mill sludge has landfill, compost and burning.The mode disposed its process at present, mainly based on landfill, only has part to be fully utilized, and paper mill sludge is used as fusing assistant and opens that a paper mill sludge is turned waste into wealth, the new way of recycling.
Embodiment
Following non-limiting examples is for illustration of the present invention.
A kind of composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature, described fusing assistant is mixed with the ratio of 1:1 ~ 3:1 by paper mill sludge powder sample and limestone powder sample, described paper mill sludge contains organism, empty butt thermal value is 800 kilocalories/kg ~ 1000 kilocalorie/kg, basic oxide mass content more than 50%, its chemical composition and mass content thereof are: CaO40% ~ 56%, MgO 3% ~ 12%, Al
2o
33% ~ 12%, Fe
2o
39% ~ 15%, SiO
214% ~ 20%, SO
3< 3%, TiO
2< 0.8%, and mass content is the alkalimetal oxide of less than 1% and a small amount of impurity.
For the paper mill sludge sample of Chongqing paper company, the technical analysis of described paper mill sludge fusing assistant and ultimate analysis are in table one, and composition analysis is in table two.
Specific implementation process: paper mill sludge sample and Shell vapourizing furnace high ash melting point coal sample, can be prepared according to GB/T474-2008 " preparation method of coal sample ", GB/T1574-2007 " coal ash analysis method " and GB/T219-2008 " measuring method of coal ash melting property " and measure.The preparation of composite fluxing agent is that paper mill sludge after spontaneous combustion being dried or drying and Wingdale carry out fragmentation respectively, sieve, and mixes by a certain percentage.
Paper mill sludge powder sample and limestone powder sample are mixed and made into composite fluxing agent with the ratio of 1:1 by embodiment 1 by mass percentage, and this composite fluxing agent is by mass percentage containing 50% paper mill sludge and 50% Wingdale.
Paper mill sludge powder sample and limestone powder sample are mixed and made into composite fluxing agent with the ratio of 2:1 by embodiment 2 by mass percentage, and this composite fluxing agent is by mass percentage containing 66.67% paper mill sludge and 33.33% Wingdale.
Paper mill sludge powder sample and limestone powder sample are mixed and made into composite fluxing agent with the ratio of 4:3 by embodiment 3 by mass percentage, and this composite fluxing agent is by mass percentage containing 57.14% paper mill sludge and 42.86% Wingdale.
Paper mill sludge powder sample and limestone powder sample are mixed and made into composite fluxing agent with the ratio of 3:1 by embodiment 4 by mass percentage, and this composite fluxing agent is by mass percentage containing 75% paper mill sludge and 25% Wingdale.
Paper mill sludge powder sample and limestone powder sample are mixed and made into composite fluxing agent with the ratio of 3:2 by embodiment 5 by mass percentage, and this composite fluxing agent is by mass percentage containing 60% paper mill sludge and 40% Wingdale.
Composite fluxing agent of the present invention in use according to the requirement of vapourizing furnace to coal ash melting property, can suitably regulate proportioning and the addition thereof of composite fluxing agent.
The coal ash melting property of this composite fluxing agent of embodiment 6 on high ash melting point coal sample affects experimental study.Specifically in table four and table five.
The fusing assistant technical analysis of table one paper mill sludge and Elemental analysis data:
Table two paper mill sludge flux constituents is analyzed and grey melt temperature analytical data:
The elemental analysis data of table three Wingdale sample:
| Sequence number | Analysis project | Unit | Limestone powder |
| 1 | Calcium carbonate (CaCO 3) | ％ | 99.14 |
| 2 | Magnesium oxide (MgO) | ％ | 0.35 |
| 3 | Moisture (planar water) | ％ | 0.02 |
| 4 | Impurity | ％ | 0.49 |
The grey chemical composition analytical data of table four coal sample:
Table five composite fluxing agent is on the impact of coal ash melting property:
Remarks: adding proportion is the ratio that the add-on of fusing assistant accounts for fusing assistant and feed coal gross weight.
Table six without Wingdale, the example effects of fluxing (being added to example with coal sample 2) when simple paper mill sludge fusing assistant heavy dose is added:
| Sequence number | Adding proportion | Texturing temperature | Softening temperature | Hemispherical temperature | Yield temperature |
| 1 | 0.99％ | 1417 | ＞1450℃ | ＞1450℃ | ＞1450℃ |
| 2 | 1.96％ | 1389 | ＞1450℃ | ＞1450℃ | ＞1450℃ |
| 3 | 2.91％ | 1382 | 1431 | 1442 | ＞1450℃ |
| 4 | 3.85％ | 1358 | 1416 | 1421 | 1430 |
| 5 | 4.76％ | 1361 | 1415 | 1418 | 1424 |
| 6 | 5.40％ | 1360 | 1396 | 1401 | 1408 |
| 7 | 6.54％ | 1374 | 1392 | 1397 | 1407 |
| 8 | 7.41％ | 1369 | 1400 | 1404 | 1406 |
| 9 | 8.26％ | 1361 | 1403 | 1409 | 1413 |
| 10 | 10％ | 1368 | 1405 | 1410 | 1416 |
| 11 | 11％ | 1376 | 1402 | 1410 | 1416 |
| 12 | 12％ | 1378 | 1408 | 1414 | 1422 |
| 13 | 13％ | 1354 | 1408 | 1414 | 1419 |
| 14 | 14％ | 1332 | 1381 | 1388 | 1397 |
| 15 | 15％ | 1292 | 1365 | 1386 | 1389 |
| 16 | 16％ | 1274 | 1345 | 1360 | 1371 |
| 17 | 17％ | 1277 | 1308 | 1314 | 1321 |
| 18 | 18％ | 1204 | 1273 | 1285 | 1299 |
| 19 | 19％ | 1233 | 1248 | 1258 | 1265 |
| 20 | 20％ | 1200 | 1238 | 1244 | 1249 |
| 21 | 21％ | 1220 | 1232 | 1237 | 1241 |
| 22 | 22％ | 1213 | 1232 | 1238 | 1243 |
| 23 | 23％ | 1219 | 1227 | 1231 | 1238 |
| 24 | 24％ | 1219 | 1225 | 1231 | 1238 |
| 25 | 25％ | 1213 | 1224 | 1230 | 1235 |
| 26 | 26％ | 1194 | 1221 | 1229 | 1237 |
| 27 | 27％ | 1209 | 1226 | 1230 | 1236 |
| 28 | 28％ | 1215 | 1223 | 1230 | 1239 |
| 29 | 29％ | 1187 | 1222 | 1227 | 1234 |
| 30 | 30％ | 1218 | 1228 | 1235 | 1255 |
| 31 | 31％ | 1212 | 1236 | 1244 | 1250 |
| 32 | 32％ | 1236 | 1245 | 1253 | 1265 |
| 33 | 33％ | 1232 | 1249 | 1258 | 1269 |
| 34 | 34％ | 1239 | 1258 | 1278 | 1286 |
| 35 | 35％ | 1227 | 1263 | 1279 | 1292 |
| 36 | 36％ | 1252 | 1278 | 1286 | 1295 |
| 37 | 37％ | 1238 | 1294 | 1312 | 1322 |
| 38 | 38％ | 1262 | 1305 | 1326 | 1334 |
| 39 | 39％ | 1263 | 1318 | 1329 | 1336 |
| 40 | 40％ | 1280 | 1329 | 1340 | 1349 |
| 41 | 41％ | 1303 | 1335 | 1355 | 1362 |
| 42 | 42％ | 1313 | 1349 | 1354 | 1358 |
| 43 | 43％ | 1274 | 1346 | 1360 | 1371 |
| 44 | 44％ | 1332 | 1350 | 1360 | 1367 |
| 45 | 45％ | 1296 | 1356 | 1362 | 1368 |
| 46 | 46％ | 1280 | 1358 | 1364 | 1370 |
| 47 | 47％ | 1290 | 1358 | 1363 | 1368 |
| 48 | 48％ | 1300 | 1357 | 1366 | 1371 |
| 49 | 49％ | 1332 | 1359 | 1365 | 1375 |
| 50 | 50％ | 1288 | 1360 | 1366 | 1371 |
| 51 | 55％ | 1321 | 1368 | 1377 | 1382 |
| 52 | 60％ | 1352 | 1364 | 1370 | 1375 |
| 53 | 65％ | 1324 | 1344 | 1358 | 1380 |
| 54 | 70％ | 1314 | 1331 | 1338 | 1342 |
| 55 | 75％ | 1333 | 1349 | 1354 | 1360 |
| 56 | 80％ | 1350 | 1372 | 1373 | 1385 |
| 57 | 85％ | 1371 | 1375 | 1382 | 1392 |
| 58 | 90％ | 1280 | 1376 | 1386 | 1392 |
| 59 | 95％ | 1294 | 1372 | 1386 | 1391 |
The patent of invention that comparative example 1CN1970698 discloses " a kind of fusing assistant reducing coal ash fusion temperature and preparation method thereof ", fusing assistant described in it is that described fusing assistant has following component (% by weight): CaCO for reducing producing the ash fusion point of lime-ash in coal gasification course and the additive added in coal
382% ~ 93%; Fe
2o
32% ~ 16%, surplus is MgCO
3.This solubility promoter addition accounts for 25% ~ 32% of solubility promoter and feed coal gross weight, as follows to the ash fusion point test-results of Huainan coal:
From previous embodiment and comparative example: composite fluxing agent of the present invention is applied to high ash melting point coal sample, its test-results reducing coal ash fusion temperature shows, effectively can reduce the adding of this composite fluxing agent below coal ash fusion temperature temperature to 1400 DEG C, make high ash melting point coal sample also go for the vapourizing furnace application of slag tap technology.There are three distinguishing features simultaneously:
1, suitability is extensive, all has good reduction ash fusion point temperature action to high-ash-fusion coal widely; Its flexible ratio, respond well, easy to use;
2, consumption is few, and ash fusion point temperature reduction amplitude is large; Wingdale usage quantity is less, can effectively alleviate or avoid current vapourizing furnace to adopt merely to add the method for Wingdale to reduce coal ash fusion temperature, easily produces and adds too much and cause the problem of stifled slag;
3, adopt composite fluxing agent of the present invention, composite auxiliary solvent addition reduces as the addition of fusing assistant than simple Wingdale and the simple paper mill sludge that uses of using.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. one kind is reduced the composite fluxing agent of gasified pulverized coal slag ash fusion point temperature, it is characterized in that: described fusing assistant is mixed with the ratio of 1:1 ~ 3:1 by paper mill sludge powder sample and limestone powder sample, described paper mill sludge contains organism, empty butt thermal value is 800 kilocalories/kg ~ 1000 kilocalorie/kg, basic oxide mass content more than 50%, its chemical composition and mass content thereof are: CaO 40% ~ 56%, MgO 3% ~ 12%, Al
2o
33% ~ 12%, Fe
2o
39% ~ 15%, SiO
214% ~ 20%, SO
3< 3%, TiO
2< 0.8%, and mass content is the alkalimetal oxide of less than 1% and a small amount of impurity.
2. the composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature as claimed in claim 1, is characterized in that composite fluxing agent chemical composition and mass content thereof consist of: CaO 52% ~ 56%, MgO 2% ~ 9%, Al
2o
32% ~ 9%, Fe
2o
35% ~ 15%, SiO
210% ~ 18%, TiO
20.15 ~ 0.3%, K
2o 0.1% ~ 0.2%, Na
2o 0.05% ~ 0.2%, SO
30.8% ~ 1.6%, MnO0.02% ~ 0.08% and a small amount of impurity.
3. the composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature as claimed in claim 1, is characterized in that: described fusing assistant is mixed with the ratio of mass ratio 1:1 by paper mill sludge powder sample and limestone powder sample.
4. the composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature as claimed in claim 1, is characterized in that: described fusing assistant is mixed with the ratio of mass ratio 2:1 by paper mill sludge powder sample and limestone powder sample.
5. the composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature as claimed in claim 1, is characterized in that: described fusing assistant is mixed with the ratio of mass ratio 4:3 by paper mill sludge powder sample and limestone powder sample.
6. the composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature as claimed in claim 1, is characterized in that: described fusing assistant is mixed with the ratio of mass ratio 3:1 by paper mill sludge powder sample and limestone powder sample.
7. the composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature as claimed in claim 1, is characterized in that: described fusing assistant is mixed with the ratio of mass ratio 3:2 by paper mill sludge powder sample and limestone powder sample.
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| CN105400570A (en) * | 2015-12-21 | 2016-03-16 | 神华集团有限责任公司 | Method for reducing coal ash melting temperature |
| CN105542820A (en) * | 2015-12-21 | 2016-05-04 | 神华集团有限责任公司 | Coal blending method for coal for gasification furnace |
| CN105567271A (en) * | 2015-12-21 | 2016-05-11 | 神华集团有限责任公司 | Method for mixing coal for solid-state deslagging coal chemistry industry device |
| CN109705918A (en) * | 2017-10-25 | 2019-05-03 | 中国石油化工股份有限公司 | A kind of composite fluxing agent and its preparation method and application improving coal ash |
| CN111534355A (en) * | 2020-04-01 | 2020-08-14 | 绍兴凤登环保有限公司 | Fluxing agent for reducing coal ash melting point |
| CN115261097A (en) * | 2022-09-06 | 2022-11-01 | 山西潞安煤基清洁能源有限责任公司 | Preparation method of raw material coal fluxing agent of liquid slag-discharging gasification furnace |
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| CN105400570A (en) * | 2015-12-21 | 2016-03-16 | 神华集团有限责任公司 | Method for reducing coal ash melting temperature |
| CN105542820A (en) * | 2015-12-21 | 2016-05-04 | 神华集团有限责任公司 | Coal blending method for coal for gasification furnace |
| CN105567271A (en) * | 2015-12-21 | 2016-05-11 | 神华集团有限责任公司 | Method for mixing coal for solid-state deslagging coal chemistry industry device |
| CN105400570B (en) * | 2015-12-21 | 2018-01-16 | 神华集团有限责任公司 | A kind of method for reducing coal ash melting temperature |
| CN105542820B (en) * | 2015-12-21 | 2018-06-26 | 神华集团有限责任公司 | A kind of blending method of gasification furnace coal |
| CN109705918A (en) * | 2017-10-25 | 2019-05-03 | 中国石油化工股份有限公司 | A kind of composite fluxing agent and its preparation method and application improving coal ash |
| CN109705918B (en) * | 2017-10-25 | 2021-12-17 | 中国石油化工股份有限公司 | Composite fluxing agent for improving fusion characteristics of coal ash and preparation method and application thereof |
| CN111534355A (en) * | 2020-04-01 | 2020-08-14 | 绍兴凤登环保有限公司 | Fluxing agent for reducing coal ash melting point |
| CN115261097A (en) * | 2022-09-06 | 2022-11-01 | 山西潞安煤基清洁能源有限责任公司 | Preparation method of raw material coal fluxing agent of liquid slag-discharging gasification furnace |
| CN115261097B (en) * | 2022-09-06 | 2024-01-19 | 山西潞安煤基清洁能源有限责任公司 | Preparation method of raw material coal fluxing agent of liquid slag-discharging gasifier |
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