CN105854959B - A kind of method of hydro-thermal method recycling incineration of refuse flyash - Google Patents
A kind of method of hydro-thermal method recycling incineration of refuse flyash Download PDFInfo
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- CN105854959B CN105854959B CN201610235237.7A CN201610235237A CN105854959B CN 105854959 B CN105854959 B CN 105854959B CN 201610235237 A CN201610235237 A CN 201610235237A CN 105854959 B CN105854959 B CN 105854959B
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- 239000010881 fly ash Substances 0.000 title claims abstract description 30
- 238000001027 hydrothermal synthesis Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004064 recycling Methods 0.000 title claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 23
- 239000000428 dust Substances 0.000 claims abstract description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- 235000019441 ethanol Nutrition 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical group CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 7
- 229910052700 potassium Inorganic materials 0.000 abstract description 6
- 229910052708 sodium Inorganic materials 0.000 abstract description 6
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052801 chlorine Inorganic materials 0.000 abstract description 4
- 238000012805 post-processing Methods 0.000 abstract description 4
- 150000003839 salts Chemical group 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 238000011068 loading method Methods 0.000 abstract description 2
- NWJUARNXABNMDW-UHFFFAOYSA-N tungsten vanadium Chemical compound [W]=[V] NWJUARNXABNMDW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 11
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011133 lead Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 2
- 150000002013 dioxins Chemical class 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 125000005909 ethyl alcohol group Chemical group 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Substances NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- -1 hydrazine compound Chemical class 0.000 description 2
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 2
- 230000002779 inactivation Effects 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 1
- 241000345998 Calamus manan Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 235000012950 rattan cane Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000000194 supercritical-fluid extraction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J27/187—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with manganese, technetium or rhenium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J27/195—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium or tantalum
- B01J27/198—Vanadium
-
- B01J35/615—
-
- B01J35/633—
-
- B01J35/647—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/06—Washing
Abstract
The invention discloses a kind of methods of hydro-thermal method recycling incineration of refuse flyash.This method first passes through the elements such as Na, K, Cl of part inorganic salts form in pretreatment removal flying dust, again by hydro-thermal reaction increase specific surface area compared with, increase Jie's micropore, then surface acidity position is increased by post-processing and removes alkalinous metal substance, finally obtain the denitration catalyst carrier of function admirable.Denitration catalyst carrier is made in incineration of refuse flyash by the present invention, and dangerous solid waste is transformed into the higher product of surcharge.Denitration catalyst carrier large specific surface area obtained, surface acidity position is sufficient, pore passage structure enriches, secures a small amount of metallics for having catalytic activity, denitration activity substance for loading the types such as vanadium tungsten, copper, iron can obtain excellent catalytic denitration performance.
Description
Technical field
The invention belongs to dangerous field of solid waste treating technology and technical field of air pollution control, and in particular to one
The method of kind hydro-thermal method recycling incineration of refuse flyash.
Background technology
With the rapid development of social economy, China city and residents in rural community yield rapid growth.At house refuse
Reason method mainly has landfill, compost, burning etc..Burning can make rubbish volume reduction 80~90%, waste gas of incineration can be used for heat supply, hair
Electricity, to achieve the purpose that resource reutilization.China's most laboratories start in urban construction large size waste-to-energy plant at present,
Part remote mountain areas starts to build Small-sized living garbage incinerator.It is about rubbish quality 2~5% that consumer waste incineration, which will generate,
Flying dust, it is necessary to as dangerous fixed-end forces.Flying dust main component includes the members such as Ca, Si, K, Na, Zn, Pb, Cu, Cd, Cl, S, C
Element, and certain density heavy metal is carried secretly He bioxin.As garbage incineration technology is constantly promoted in China, incineration of refuse flyash
Yield increasingly increase, processing pressure increase severely.
Flyash treatment method mainly has：Cement solidification, chemical agent stabilization, high-temperature heat treatment, supercritical fluid extraction, water
Heat treatment etc..In recent years, hydrothermal technology has received widespread attention.This method utilize flying dust in the source Al, Si or additional Al,
Heavy metal synthetic aluminosilicate salt mineral and is stable in mineral by the sources Si under alkaline condition, have the innoxious degree of flying dust it is high,
The advantages that product can recycle after processing.As Chinese patent CN 200710040771.3 discloses a kind of incineration of refuse flyash
Hydro-thermal treatment method, this method into flying ash plus water form ash/water mixed system, ash/water mixed system is heated to
It is charged with the solution of hydrazine compound after boil under atmospheric pressure, stirs evenly, and continues to heat up, is protected after reaching predetermined temperature
Temperature makes hydrazine compound solution be reacted with flying dust Zhong bioxin, while part heavy metal ion is stablized.German scholar
A.P.Bayuseno et al. using flying dust hydro-thermal reaction be made Al substitution tobermorite and plus rattan stone (A.P.Bayuseno,
W.W.Schmahl, Th.Mullejans, Hydrothermal processing of MSWI Fly Ash-towards new
Stable minerals and fixation of heavy metals.Journal of Hazardous Materials,
2009,167 (1-3)：250-259.).
Invention content
The purpose of the present invention is to provide a kind of methods of hydro-thermal method recycling incineration of refuse flyash.Specifically originally
Invention is to be modified processing to incineration of refuse flyash by hydro-thermal method, produces denitration catalyst carrier product.This method
The elements such as Na, K, Cl of part inorganic salts form in pretreatment removal flying dust are first passed through, then specific surface is increased by hydro-thermal reaction
Product compared with, increase Jie's micropore, then increased by post-processing and surface acidity position and remove alkalinous metal substance, it is excellent to finally obtain performance
Good denitration catalyst carrier.
The object of the invention is realized by following technical step：
A kind of method of hydro-thermal method recycling incineration of refuse flyash, the method are to first pass through pretreatment removal flying dust
The elements such as Na, K, Cl of middle part inorganic salts form, then by hydro-thermal reaction increase specific surface area compared with, increase Jie's micropore, then
Increase surface acidity position by post-processing and remove alkalinous metal substance, finally obtains the denitration catalyst carrier of function admirable,
Complete incineration of refuse flyash recycling.
The method of the hydro-thermal method recycling incineration of refuse flyash specifically includes following steps：
(1) flying dust pre-processes：Incineration of refuse flyash is soluble in water, it stirs 0.5~2 hour, filtering, obtains pretreatment and fly
Ash；
(2) hydro-thermal reaction：Lye, organic solvent are measured, is added after mixing and pre-processes flying dust, stirring 2~10 hours, then
It moves into reaction kettle and carries out hydro-thermal reaction；
(3) it post-processes：The precipitation after hydro-thermal process is taken out, dilute acid wash to pH value is less than 2, then is washed with deionized
It to neutrality, is then impregnated 6 hours or more with ethyl alcohol, finally filters, dries and obtain denitration catalyst carrier product.
In above-mentioned steps (2), lye is the sodium hydroxide or potassium hydroxide solution of 1~10mol/L, and organic solvent is first
One kind in alcohol, ethyl alcohol, propyl alcohol and hydrazine hydrate.
In above-mentioned steps (2), the volume ratio of lye and organic solvent is preferably (10~1)：1, liquid-solid ratio is preferably 2~10
Every gram of milliliter.Liquid-solid ratio of the present invention refers to the volume mass ratio of lye and organic solvent and incineration of refuse flyash, single
Position is ml/g.
In above-mentioned steps (2), water heating kettle compactedness is preferably 60~80%, and hydrothermal temperature is preferably 140~250
DEG C, the hydro-thermal reaction time is preferably 12~48 hours.
In above-mentioned steps (3), diluted acid is preferably in the dilute sulfuric acid, dilute oxalic acid, dilute hydrochloric acid solution of 0.05~0.20mol/L
It is a kind of.
Denitration catalyst carrier must have larger specific surface area, sufficient surface acidity position, abundant pore passage structure,
Na, K etc., which must be controlled, can lead to the content of active component serious inactivation substance, and avoid noxious material from discharging into environment
In.Flying dust pretreatment can remove Cl, avoid it from being reacted with organic matter in hydrothermal reaction process and generate dioxins materials.Flying dust
Pretreatment can remove Na, K, it is avoided to remain in the active component inactivation for leading to load in most middle product.Hydro-thermal reaction is in high temperature
, dioxins materials are carried out under high pressure to be degraded by dechlorination hydrogenation reaction, and inorganic oxide, salts substances can be reformed into
The abundant structure of bigger serface, Jie's micropore.Post-processing weak acid scrubbing process can increase surface acidity position, and remove hydro-thermal reaction
The excessive lye of addition, deionized water washing process can remove the excessive anion that weak acid scrubbing process is brought into.Zn,Pb,Cu,
The heavy metal elements such as Cr, Ni are fixed in denitration catalyst carrier product, and Cr, Cu, Zn, Ni etc. live with catalytic denitration
Property, the activity of denitrating catalyst can be enhanced.
Compared with prior art, the present invention has the following advantages and beneficial effects：
(1) denitration catalyst carrier is made in incineration of refuse flyash by the present invention, by dangerous solid waste be transformed into surcharge compared with
High product.
(2) denitration catalyst carrier large specific surface area produced by the present invention, surface acidity position is sufficient, pore passage structure is abundant,
A small amount of metallics for having catalytic activity is secured, the denitration activity substance for loading the types such as vanadium tungsten, copper, iron can use
Obtain excellent catalytic denitration performance.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto.
Embodiment 1
40 grams of incineration of refuse flyash are taken, are stirred 0.5 hour, filtering obtains pretreatment flying dust.It is a concentration of to measure 150mL
Sodium hydroxide solution, the 50mL absolute ethyl alcohols of 10mol/L, after mixing be added pretreatment flying dust, stir 2 hours, then according to
60% compactedness moves into reaction kettle.Hydro-thermal reaction 48 hours at 150 DEG C take out precipitation, use 0.1mol/L after cooling
Dilute sulfuric acid wash to pH value be less than 2, be then washed with deionized to neutrality, then with ethyl alcohol impregnate 6 hours, finally filtering,
Drying obtains denitration catalyst carrier product.
Embodiment 2
40 grams of incineration of refuse flyash are taken, are stirred 2 hours, filtering obtains pretreatment flying dust.Measure a concentration of 1mol/L of 50mL
Sodium hydroxide solution, 30mL absolute methanols, pretreatment flying dust is added after mixing, stirs 10 hours, is then filled out according to 80%
Degree of filling moves into reaction kettle.Precipitation is taken out, with the dilute hydrochloric acid of 0.2mol/L in hydro-thermal reaction 12 hours at 250 DEG C after cooling
Washing to pH value is less than 2, is then washed with deionized to neutrality, then is impregnated 12 hours with ethyl alcohol, finally filters, drying obtains
Denitration catalyst carrier product.
Embodiment 3
40 grams of incineration of refuse flyash are taken, are stirred 1 hour, filtering obtains pretreatment flying dust.Measure a concentration of 2mol/ of 360mL
Sodium hydroxide solution, the 40mL hydrazine hydrates of L, after mixing be added pretreatment flying dust, stir 4 hours, then according to 70% filling
Degree moves into reaction kettle.Hydro-thermal reaction 24 hours at 200 DEG C are taken out precipitation, are washed with dilute oxalic acid of 0.05mol/L after cooling
It washs to pH value and is less than 2, be then washed with deionized to neutrality, then impregnated 8 hours with ethyl alcohol, finally filtered, drying is taken off
Denox catalyst vector product.
Embodiment 4
40 grams of incineration of refuse flyash are taken, are stirred 1 hour, filtering obtains pretreatment flying dust.Measure a concentration of 5mol/ of 150mL
Pretreatment flying dust is added in potassium hydroxide solution, the 150mL absolute ethyl alcohols of L after mixing, stir 6 hours, then filled out according to 70%
Degree of filling moves into reaction kettle.Precipitation is taken out, with the dilute sulfuric acid of 0.1mol/L in hydro-thermal reaction 24 hours at 180 DEG C after cooling
Washing to pH value is less than 2, is then washed with deionized to neutrality, then is impregnated 12 hours with ethyl alcohol, finally filters, drying obtains
Denitration catalyst carrier product.
The specific surface area of incineration of refuse flyash and denitration catalyst carrier obtained, Kong Rong, grain size such as table described in embodiment 1
Shown in 1：
Incineration of refuse flyash and the specific surface area of denitration catalyst carrier obtained, Kong Rong, grain size described in 1 embodiment 1 of table
Such as table 2 of the Contents of Main Components of incineration of refuse flyash and denitration catalyst carrier obtained described in embodiment 1 is (single
Position：Wt% shown in)：
The Contents of Main Components of incineration of refuse flyash and denitration catalyst carrier obtained described in 2 embodiment 1 of table
Note："/" indicates to be not detected less than detection limit
After the vanadic anhydride for being 2% by denitration catalyst carrier product load quality score made from embodiment 1, take off
Nitre activity is as shown in table 3：
Denitration activity after denitration catalyst carrier load active component made from 3 embodiment 1 of table
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (4)
1. a kind of method of hydro-thermal method recycling incineration of refuse flyash, which is characterized in that the described method comprises the following steps：
(1) incineration of refuse flyash is soluble in water, it stirs 0.5~2.0 hour, filtering, obtains pretreatment flying dust；
(2) step (1) pretreatment flying dust obtained is added after mixing lye and organic solvent, stirs 2~10 hours, then moves
Enter and carries out hydro-thermal reaction in reaction kettle；
(3) precipitation after step (2) hydro-thermal process is taken out, dilute acid wash to pH value is less than 2, then is washed with deionized into
Property, it is then impregnated 6 hours or more with ethyl alcohol, finally filters, dries and obtain denitration catalyst carrier；The diluted acid be 0.05~
One kind in the dilute sulfuric acid of 0.20mol/L, dilute oxalic acid and dilute hydrochloric acid solution.
2. the method for hydro-thermal method recycling incineration of refuse flyash according to claim 1, which is characterized in that step
(2) lye described in is the sodium hydroxide solution or potassium hydroxide solution of 1~10mol/L, and the organic solvent is methanol, second
One kind in alcohol, propyl alcohol.
3. the method for hydro-thermal method recycling incineration of refuse flyash according to claim 1, which is characterized in that step
(2) volume ratio of lye described in and organic solvent is (10~1)：1, liquid-solid ratio is 2~10 milliliters every gram in step (2).
4. the method for hydro-thermal method recycling incineration of refuse flyash according to claim 1, which is characterized in that step
(2) water heating kettle compactedness described in is 60~80%, and hydrothermal temperature is 140~250 DEG C, and the hydro-thermal reaction time is 12~48
Hour.
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| CN115814807A (en) * | 2021-12-31 | 2023-03-21 | 广东职业技术学院 | Load skeleton prepared from nickel slag, incineration fly ash and arsenic alkali slag and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050862A (en) * | 2007-05-17 | 2007-10-10 | 同济大学 | Hydrothermal processing method for garbage burning flyash |
| CN102513329A (en) * | 2011-11-17 | 2012-06-27 | 浙江大学 | Harmless treatment method for urban garbage incineration fly ash |
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