CN104998695A - Preparation method for blast furnace slag particle supported catalyst - Google Patents
Preparation method for blast furnace slag particle supported catalyst Download PDFInfo
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- CN104998695A CN104998695A CN201510433296.0A CN201510433296A CN104998695A CN 104998695 A CN104998695 A CN 104998695A CN 201510433296 A CN201510433296 A CN 201510433296A CN 104998695 A CN104998695 A CN 104998695A
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- blast furnace
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- 239000002245 particle Substances 0.000 title claims abstract description 54
- 239000002893 slag Substances 0.000 title claims abstract description 54
- 239000003054 catalyst Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims description 6
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims description 6
- GNHOJBNSNUXZQA-UHFFFAOYSA-J potassium aluminium sulfate dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GNHOJBNSNUXZQA-UHFFFAOYSA-J 0.000 claims description 6
- 238000010298 pulverizing process Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000779 smoke Substances 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 229910000805 Pig iron Inorganic materials 0.000 description 3
- 230000003203 everyday effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 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
- 150000004645 aluminates Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
- Catalysts (AREA)
Abstract
The invention relates to a preparation method for a blast furnace slag particle supported catalyst, and belongs to the technical field of blast furnace slag treatment methods and blast furnace slag treatment equipment. Blast furnace slag generated by iron smelting is prepared into the catalyst, operation is easy, the blast furnace slag particle supported catalyst is free of secondary pollution to the environment in the production process, capable of effectively adsorbing and eliminating nitrogen oxide in boiler smoke of a power plant and high in adsorption performance, and therefore the blast furnace slag waste resources are efficiently utilized. The method is unique and easy to implement, and embodiments prove that the prepared blast furnace slag particle catalyst is placed into a filter net in the boiler smoke of the power plant, so that the removal rate of the nitrogen oxide is up to above 96.6% through the detection result, and the content reaches the national emission standards.
Description
Technical field
The present invention relates to a kind of blast furnace slag particulate load method for preparing catalyst, belong to blast-furnace slag processing method and equipment technical field.
Background technology
The refuse of discharging from blast furnace when blast furnace slag is manUfaCtUre of pig iron, when furnace temperature reaches 1400 ~ 1600 DEG C, furnace charge melting, gangue in ore, the ash content in coke and cosolvent and other impurity that can not enter in the pig iron form the slag floated over above molten iron for master with silicate and aluminate, can be divided into conversion pig slag, foundry iron slag, ferromanganese ore slag etc.
Often produce the 1t pig iron according to statistics and probably produce 300 ~ 350kg blast furnace slag, calculating according to producing iron annual production 46994 ten thousand t China's year, producing the quantity of slag up to 14,000 ten thousand t, therefore carrying out recovery and the comprehensive utilization of blast furnace slag, be have to be important thing.Current blast furnace molten slag can adopt various processes to become following various material.Grain slag, slag rubble, expanded slag and slag pearl etc. are normally processed into blast furnace slag in China.But the human and material resources of often at substantial in the process of process, and during process, expense is expensive especially, and the grain slag made, slag rubble, expanded slag and slag pearl do not meet use standard yet, cause the serious wasting of resources to it.
Summary of the invention
The technical problem that the present invention mainly solves: for current blast furnace slag reclaim and comprehensive utilization process in the manpower of often at substantial, material resources, expense when processing of producing is expensive especially, what the various slag stones after making had does not meet use standard, cause the drawback of the serious wasting of resources, provide a kind of blast furnace slag particulate load method for preparing catalyst, blast furnace slag is prepared into catalyst by the method, operation is simple, in production process for environment without any harm, and have significant removal effect for nitrogen oxide in the boiler smog in power plant, therefore make use of blast furnace slag waste resource efficiently.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) get 200 ~ 400g blast furnace slag, put into micronizer and pulverize, then put it in container, add the hydrochloric acid solution that 80 ~ 150mL mass fraction is 35%, stir 20 ~ 35min, filter and use deionized water rinsing;
(2) particle after filtration is put into drying oven dry, take out dried particle and put into smelting furnace, temperature is adjusted to 1500 ~ 1700 DEG C, until particle all melts;
(3) being 3 ~ 10 DEG C by temperature and being stored in pressure is hydrogen in 8MPa container, cools fast, and puts it in pulverizer, be ground into the particle of particle diameter 5 ~ 10mm to the blast furnace slag particle of melting;
(4) pour in container by the particle after pulverizing, adding 20 ~ 30ml mass concentration is wherein 0.5mol/L nickel sulfate solution, 20 ~ 30g neopelex and 50 ~ 60mL absolute ethyl alcohol mixing and stirring; (5) get 3 ~ 4g Potassium aluminum sulfate dodecahydrate more slowly to add in above-mentioned mixed liquor, and with mass fraction be 35% hydrochloric acid solution the pH of mixed liquor is adjusted to 3 ~ 5, heating 30 ~ 45min, filters while hot; (6) solid after filtering is spent deionized water, then to put into temperature be 80 ~ 120 DEG C of roasting kiln roastings, taken out, grind to form 40 ~ 60 object particles after roasting 30 ~ 60min.
Blast furnace slag is primarily of CaO, SiO
2, Al
2o
3composition, by blast furnace slag is ground into particle, adds hydrochloric acid solution wherein, removes CaO, increases the surface area of particle simultaneously; Again by its melting, use the cold hydrogen of high pressure to cool fast, remove the sulphur-containing substance in blast furnace slag, form microcellular structure simultaneously; Again modification is carried out to it, make its heavy metal material have Adsorption and decomposition effect, use Al simultaneously
2o
3eliminate the acid-base material in water.
The invention has the beneficial effects as follows:
(1) the various expensive expense produced and the human and material resources expended in a large number have been saved in production process;
(2) can effectively adsorb for nitrogen oxide in the boiler smog in power plant and eliminate, adsorptivity be larger, make use of blast furnace slag waste resource more efficiently;
(3) operation is simple, also more friendly for environment, can not produce any secondary pollution problem.
Detailed description of the invention
First get 200 ~ 400g blast furnace slag, put into micronizer and pulverize, then put it in container, add the hydrochloric acid solution that 80 ~ 150mL mass fraction is 35%, stir 20 ~ 35min, filter and use deionized water rinsing; Then the particle after filtration is put into drying oven dry, take out dried particle and put into smelting furnace, temperature is adjusted to 1500 ~ 1700 DEG C, until particle all melts; Following temperature is 3 ~ 10 DEG C and is stored in pressure is hydrogen in 8MPa container, cools fast, and puts it in pulverizer, be ground into the particle of particle diameter 5 ~ 10mm to the blast furnace slag particle of melting; Pour in container by the particle after pulverizing subsequently, adding 20 ~ 30ml mass concentration is wherein 0.5mol/L nickel sulfate solution, 20 ~ 30g neopelex and 50 ~ 60mL absolute ethyl alcohol mixing and stirring; Get 3 ~ 4g Potassium aluminum sulfate dodecahydrate more slowly to add in above-mentioned mixed liquor, and with mass fraction be 35% hydrochloric acid solution the pH of mixed liquor is adjusted to 3 ~ 5, heating 30 ~ 45min, filters while hot; Finally the solid after filtering is spent deionized water, then to put into temperature be 80 ~ 120 DEG C of roasting kiln roastings, taken out, grind to form 40 ~ 60 object particles after roasting 30 ~ 60min.
First get 200g blast furnace slag, put into micronizer and pulverize, then put it in container, add the hydrochloric acid solution that 80mL mass fraction is 35%, stir 20min, filter and use deionized water rinsing; Then the particle after filtration is put into drying oven dry, take out dried particle and put into smelting furnace, temperature is adjusted to 1500 DEG C, until particle all melts; Following temperature is 3 DEG C and is stored in pressure is hydrogen in 8MPa container, cools fast, and puts it in pulverizer, be ground into the particle of particle diameter 5mm to the blast furnace slag particle of melting; Pour in container by the particle after pulverizing subsequently, adding 20ml mass concentration is wherein 0.5mol/L nickel sulfate solution, 20g neopelex and 50mL absolute ethyl alcohol mixing and stirring; Get 3g Potassium aluminum sulfate dodecahydrate more slowly to add in above-mentioned mixed liquor, and with mass fraction be 35% hydrochloric acid solution the pH of mixed liquor is adjusted to 3, heating 30min, filters while hot; Finally the solid after filtering is spent deionized water, then to put into temperature be 80 DEG C of roasting kiln roastings, taken out, grind to form 40 object particles after roasting 30min.
This example operation is simple, the 20g blast furnace slag beaded catalyst made is put into certain power plant high be the boiler smoke of 80 meters screen pack in, detect nitrogen oxide in smog every day, continuous 15 days, testing result show that the content of nitrogen oxide is from 300mg/m
3be reduced to 10mg/m
3, clearance is up to 96.6%.
First get 300g blast furnace slag, put into micronizer and pulverize, then put it in container, add the hydrochloric acid solution that 100mL mass fraction is 35%, stir 30min, filter and use deionized water rinsing; Then the particle after filtration is put into drying oven dry, take out dried particle and put into smelting furnace, temperature is adjusted to 1600 DEG C, until particle all melts; Following temperature is 7 DEG C and is stored in pressure is hydrogen in 8MPa container, cools fast, and puts it in pulverizer, be ground into the particle of particle diameter 8mm to the blast furnace slag particle of melting; Pour in container by the particle after pulverizing subsequently, adding 25ml mass concentration is wherein 0.5mol/L nickel sulfate solution, 25g neopelex and 55mL absolute ethyl alcohol mixing and stirring; Get 3.5g Potassium aluminum sulfate dodecahydrate more slowly to add in above-mentioned mixed liquor, and with mass fraction be 35% hydrochloric acid solution the pH of mixed liquor is adjusted to 4, heating 40min, filters while hot; Finally the solid after filtering is spent deionized water, then to put into temperature be 110 DEG C of roasting kiln roastings, taken out, grind to form 50 object particles after roasting 50min.
This example operation is simple, the 15g blast furnace slag beaded catalyst made is put into certain power plant high be the boiler smoke of 80 meters screen pack in, detect nitrogen oxide in smog every day, continuous 15 days, testing result show that the content of nitrogen oxide is from 300mg/m
3be reduced to 6mg/m
3, clearance is up to 98%.
First get 400g blast furnace slag, put into micronizer and pulverize, then put it in container, add the hydrochloric acid solution that 150mL mass fraction is 35%, stir 35min, filter and use deionized water rinsing; Then the particle after filtration is put into drying oven dry, take out dried particle and put into smelting furnace, temperature is adjusted to 1700 DEG C, until particle all melts; Following temperature is 10 DEG C and is stored in pressure is hydrogen in 8MPa container, cools fast, and puts it in pulverizer, be ground into the particle of particle diameter 10mm to the blast furnace slag particle of melting; Pour in container by the particle after pulverizing subsequently, adding 30ml mass concentration is wherein 0.5mol/L nickel sulfate solution, 30g neopelex and 60mL absolute ethyl alcohol mixing and stirring; Get 4g Potassium aluminum sulfate dodecahydrate more slowly to add in above-mentioned mixed liquor, and with mass fraction be 35% hydrochloric acid solution the pH of mixed liquor is adjusted to 5, heating 45min, filters while hot; Finally the solid after filtering is spent deionized water, then to put into temperature be 120 DEG C of roasting kiln roastings, taken out, grind to form 60 object particles after roasting 60min.
This example operation is simple, the 30g blast furnace slag beaded catalyst made is put into certain power plant high be the boiler smoke of 80 meters screen pack in, detect nitrogen oxide in smog every day, continuous 15 days, testing result show that the content of nitrogen oxide is from 300mg/m
3be reduced to 3mg/m
3, clearance is up to 99%.
Claims (1)
1. a blast furnace slag particulate load method for preparing catalyst, is characterized in that concrete steps are:
(1) get 200 ~ 400g blast furnace slag, put into micronizer and pulverize, then put it in container, add the hydrochloric acid solution that 80 ~ 150mL mass fraction is 35%, stir 20 ~ 35min, filter and use deionized water rinsing;
(2) particle after filtration is put into drying oven dry, take out dried particle and put into smelting furnace, temperature is adjusted to 1500 ~ 1700 DEG C, until particle all melts;
(3) being 3 ~ 10 DEG C by temperature and being stored in pressure is hydrogen in 8MPa container, cools fast, and puts it in pulverizer, be ground into the particle of particle diameter 5 ~ 10mm to the blast furnace slag particle of melting;
(4) pour in container by the particle after pulverizing, adding 20 ~ 30ml mass concentration is wherein 0.5mol/L nickel sulfate solution, 20 ~ 30g neopelex and 50 ~ 60mL absolute ethyl alcohol mixing and stirring; (5) get 3 ~ 4g Potassium aluminum sulfate dodecahydrate more slowly to add in above-mentioned mixed liquor, and with mass fraction be 35% hydrochloric acid solution the pH of mixed liquor is adjusted to 3 ~ 5, heating 30 ~ 45min, filters while hot; (6) solid after filtering is spent deionized water, then to put into temperature be 80 ~ 120 DEG C of roasting kiln roastings, taken out, grind to form 40 ~ 60 object particles after roasting 30 ~ 60min.
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| CN201510433296.0A CN104998695A (en) | 2015-07-22 | 2015-07-22 | Preparation method for blast furnace slag particle supported catalyst |
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| CN107008145A (en) * | 2017-05-25 | 2017-08-04 | 广西壮族自治区环境保护科学研究院 | A kind of filtering material and its application in degraded VOCs |
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- 2015-07-22 CN CN201510433296.0A patent/CN104998695A/en not_active Withdrawn
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| CN111659410A (en) * | 2020-06-24 | 2020-09-15 | 南京溙科新材料科技有限公司 | Porous ceramic membrane dedusting, denitration and dioxin removal catalyst taking blast furnace slag as raw material and preparation method thereof |
| CN111659410B (en) * | 2020-06-24 | 2022-11-29 | 南京溙科新材料科技有限公司 | Porous ceramic membrane dedusting, denitration and dioxin removal catalyst taking blast furnace slag as raw material and preparation method thereof |
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Application publication date: 20151028 |
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