CN116003145A - Plastic for incinerator and preparation method thereof - Google Patents
Plastic for incinerator and preparation method thereof Download PDFInfo
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- CN116003145A CN116003145A CN202310056229.6A CN202310056229A CN116003145A CN 116003145 A CN116003145 A CN 116003145A CN 202310056229 A CN202310056229 A CN 202310056229A CN 116003145 A CN116003145 A CN 116003145A
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- 239000004033 plastic Substances 0.000 title claims abstract description 83
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 235000019738 Limestone Nutrition 0.000 claims abstract description 30
- 239000006028 limestone Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 26
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 21
- 239000011707 mineral Substances 0.000 claims abstract description 21
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 14
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000004927 clay Substances 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical group O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 46
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 32
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical group [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 32
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 31
- 238000010438 heat treatment Methods 0.000 claims description 31
- 238000002156 mixing Methods 0.000 claims description 26
- 239000002135 nanosheet Substances 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims description 8
- 239000007767 bonding agent Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009415 formwork Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 22
- 238000004108 freeze drying Methods 0.000 description 11
- 229920001568 phenolic resin Polymers 0.000 description 8
- 239000005011 phenolic resin Substances 0.000 description 8
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 230000002194 synthesizing effect Effects 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002064 nanoplatelet Substances 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 2
- 229910001950 potassium oxide Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Gasification And Melting Of Waste (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the field of refractory materials, and particularly discloses a plastic for an incinerator and a preparation method thereof; the incinerator plastic comprises a component A and a component B; wherein the component a comprises clay and divalent metal oxide; the component B comprises limestone, mineral powder and a binding agent. The plastic for the incinerator, which is prepared by the invention, has high density, high strength and stable volume, is not easy to crack or shrink, can be used for different parts and different working conditions in the incinerator, and solves the problem of shorter service life of the existing plastic; the plastic for the incinerator, which is prepared by the invention, can be constructed by adopting a smearing and formwork tamping method according to different construction parts, does not need to harden for a long time, is convenient to use and is beneficial to construction.
Description
Technical Field
The invention belongs to the field of refractory materials, and particularly relates to a plastic for an incinerator and a preparation method thereof.
Technical Field
The incinerator is used for incinerating garbage, which is an important way for purifying ecological environment, and can effectively relieve garbage pollution. The incinerator is a harmless treatment device which uses the combustion of fuel such as coal, fuel oil, fuel gas and the like to burn and carbonize objects to be treated at high temperature so as to achieve the aim of disinfection, and is commonly used for harmless treatment of medical and domestic waste products and animals. The average temperature is typically over 850 degrees celsius during operation of the incinerator, and can reach and be maintained above 1000 degrees celsius during actual operation. Therefore, the incinerator needs to be protected by using refractory materials inside the incinerator, and the refractory materials can play a role in seamless masonry in the hearth.
The plastic is an unshaped refractory material which has higher plasticity in a longer time and is in a hard mud paste shape, the materials are mainly clay and high aluminum, and also siliceous, magnesian, chromite, silicon carbide and the like, and when in use, the mixture is compacted or rammed, and a compact lining and a structure can be formed after baking. However, in actual work, it is found that the existing refractory plastic often has the phenomena of surface pulverization, cracks, concave-convex surfaces and the like along with the extension of the service time of the kiln, so that the damage generated after the incinerator is operated continuously for a long time is often required to be repaired, the working efficiency is reduced, and the production cost is increased.
Thus, there is a need for a new incinerator plastic to maintain long-term stable operation of the incinerator.
Disclosure of Invention
In order to solve the technical problems, the invention provides a plastic for an incinerator, which comprises a component A and a component B; wherein the component a comprises clay and divalent metal oxide; the component B comprises limestone, mineral powder and a binding agent.
In some embodiments, the weight portion ratio of the component A to the component B is 52-83:10.2-17.7.
in some embodiments, in the component a, the weight part ratio of the clay to the divalent metal oxide is 50-80:2-3;
in the component B, the weight part ratio of the limestone, the fly ash and the bonding agent is 0.2-0.7:3-6:7-11.
in some of these embodiments, the divalent metal oxide is nickel oxide; the clay is montmorillonite clay.
In some of these embodiments, the chemical composition of the ore fines includes silica, alumina, ferric oxide, calcium oxide, magnesium oxide, potassium oxide, and sodium oxide.
In some embodiments, the silica, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, potassium oxide and sodium oxide are 29-55 parts by weight: 12-30:1-4:2-8:1-5:1-3:1-2.
in some of these embodiments, the nickel oxide is nanoplatelet nickel oxide.
In some embodiments, the nanoplatelets nickel oxide have a thickness of 10nm or less.
In some of these embodiments, the limestone has a particle size of 1-3mm.
In some of these embodiments, the binder is a modified phenolic resin.
In some of these embodiments, the modified phenolic resin is a nitrile rubber modified phenolic resin.
In some of these embodiments, after mixing phenol with nitrile rubber powder, excess formaldehyde is added and the modified phenolic resin is synthesized at 90-120 ℃ with metal oxide as catalyst.
The invention also provides a preparation method of the incinerator plastic, which comprises the steps of mixing and heating the component A and the component B to obtain the incinerator plastic.
In some of these embodiments, the temperature at which the component a and the component B are mixed and heated is 40-60 ℃.
In some of these embodiments, the clay of component a is mixed with water and then heated, freeze-dried and crushed, and then mixed and co-heated with the divalent metal oxide; and then mixing and heating the mixture with the component B to obtain the plastic for the incinerator.
In some of these embodiments, the freeze-dried crushed clay has a particle size of 3-8mm.
In some embodiments, the weight ratio of clay to water is 100:25-35.
the invention also provides the application of any incinerator plastic or the incinerator plastic prepared by any preparation method in manufacturing and/or repairing the incinerator.
Compared with the prior art, the invention has the beneficial effects that:
the plastic for the incinerator, which is prepared by the invention, has low apparent porosity, low heat conductivity coefficient and high flexural strength, and meanwhile, has small volume change and good high temperature resistance under the condition of rapid temperature change; the plastic for the incinerator, which is prepared by the invention, has high density, high strength and stable volume, is not easy to crack or shrink, and can be used for different parts and different working conditions in the incinerator. Therefore, the plastic for the incinerator prepared by the invention solves the problem of shorter service life of the existing plastic. The plastic for the incinerator, which is prepared by the invention, can be constructed by adopting a smearing and formwork tamping method according to different construction parts, does not need to harden for a long time, is convenient to use and is beneficial to construction. The plastic material for the incinerator disclosed by the invention has the advantages of few raw materials, simple process, suitability for industrial application and wide application prospect
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The raw materials used in the present invention are all commercially available.
Example 1 preparation of Plastic for incinerator
A plastic for an incinerator, which comprises a component A and a component B; wherein, the component A comprises montmorillonite clay and nano-sheet nickel oxide; the component B comprises limestone, mineral powder and modified phenolic resin. The weight part ratio of montmorillonite clay to nano-sheet nickel oxide is 80:3, a step of; the weight part ratio of limestone, mineral powder and modified phenolic resin is 0.7:6:11. wherein, the thickness of the nano-sheet nickel oxide is 3nm; the particle size of limestone is 1mm.
The preparation method of the plastic for the incinerator comprises the following steps:
mixing phenol with nitrile rubber powder, adding excessive formaldehyde, and synthesizing modified phenolic resin at 90 deg.c with metal oxide as catalyst.
Mixing 80 parts by weight of montmorillonite clay with 20 parts by weight of water, heating to 50 ℃, preserving heat for 10min, freeze-drying and crushing, mixing with 3 parts by weight of nano-sheet nickel oxide, and co-heating at 30 ℃ for 10min; wherein the grain size of the montmorillonite clay after freeze drying and crushing is 3mm. Mixing and heating the mixture with 0.7 part by weight of limestone, 6 parts by weight of mineral powder and 11 parts by weight of modified phenolic resin to 60 ℃ and then preserving heat for 40min to obtain the plastic for the incinerator.
Example 2 preparation of Plastic for incinerator
A plastic for an incinerator, which comprises a component A and a component B; wherein, the component A comprises montmorillonite clay and nano-sheet nickel oxide; the component B comprises limestone, mineral powder and modified phenolic resin. The weight part ratio of montmorillonite clay to nano-sheet nickel oxide is 50:2; the weight part ratio of limestone, mineral powder and modified phenolic resin is 0.2:3:7. wherein, the thickness of the nano-sheet nickel oxide is 10nm; the method comprises the steps of carrying out a first treatment on the surface of the The particle size of limestone is 3mm.
The preparation method of the plastic for the incinerator comprises the following steps:
mixing phenol with nitrile rubber powder, adding excessive formaldehyde, and synthesizing modified phenolic resin at 120 deg.c with metal oxide as catalyst.
50 parts by weight of montmorillonite clay is mixed with 17.5 parts by weight of water, then the mixture is heated to 40 ℃ and then is kept warm for 5 minutes, freeze-dried and crushed, and then the mixture is mixed with 2 to 3 parts by weight of nano-sheet nickel oxide and is heated at 40 ℃ for 30 minutes; wherein the grain size of the montmorillonite clay after freeze drying and crushing is 8mm. Mixing and heating the mixture with 0.2 part by weight of limestone, 3 parts by weight of mineral powder and 7 parts by weight of modified phenolic resin to 40 ℃ and then preserving heat for 20min to obtain the plastic for the incinerator.
Example 3 preparation of Plastic for incinerator
A plastic for an incinerator, which comprises a component A and a component B; wherein, the component A comprises montmorillonite clay and nano-sheet nickel oxide; the component B comprises limestone, mineral powder and modified phenolic resin. The weight portion ratio of montmorillonite clay to nano-sheet nickel oxide is 60:2.5; the weight part ratio of limestone, mineral powder and modified phenolic resin is 0.5:4:9. wherein, the thickness of the nano-sheet nickel oxide is 6nm; the particle size of limestone is 2mm.
The preparation method of the plastic for the incinerator comprises the following steps:
mixing phenol with nitrile rubber powder, adding excessive formaldehyde, and synthesizing modified phenolic resin at 110 ℃ by using metal oxide as a catalyst.
Mixing 60 parts by weight of montmorillonite clay with 18 parts by weight of water, heating to 45 ℃, preserving heat for 7min, freeze-drying, crushing, mixing with 2.5 parts by weight of nano-sheet nickel oxide, and heating at 35 ℃ for 20min; wherein the grain size of the montmorillonite clay after freeze drying and crushing is 5mm. Mixing and heating the mixture with 0.5 part by weight of limestone, 4 parts by weight of mineral powder and 9 parts by weight of modified phenolic resin to 50 ℃ and then preserving heat for 30min to obtain the plastic for the incinerator.
Example 4 preparation of Plastic for incinerator
A plastic for an incinerator, which comprises a component A and a component B; wherein, the component A comprises montmorillonite clay and nano-sheet nickel oxide; the component B comprises limestone, mineral powder and modified phenolic resin. The weight portion ratio of montmorillonite clay to nano-sheet nickel oxide is 65:3, a step of; the weight part ratio of limestone, mineral powder and modified phenolic resin is 0.7:3:8. wherein, the thickness of the nano-sheet nickel oxide is 2nm; the particle size of limestone is 3mm.
The preparation method of the plastic for the incinerator comprises the following steps:
mixing phenol with nitrile rubber powder, adding excessive formaldehyde, and synthesizing modified phenolic resin at 110 ℃ by using metal oxide as a catalyst.
Mixing 65 parts by weight of montmorillonite clay with 19.5 parts by weight of water, heating to 40 ℃, preserving heat for 10min, freeze-drying, crushing, mixing with 3 parts by weight of nano-sheet nickel oxide, and heating at 35 ℃ for 30min; wherein the grain size of the montmorillonite clay after freeze drying and crushing is 4mm. Mixing and heating the mixture with 0.7 part by weight of limestone, 3 parts by weight of mineral powder and 8 parts by weight of modified phenolic resin to 49 ℃ and then preserving heat for 20min to obtain the plastic for the incinerator.
Example 5 preparation of Plastic for incinerator
A plastic for an incinerator, which comprises a component A and a component B; wherein, the component A comprises montmorillonite clay and nano-sheet nickel oxide; the component B comprises limestone, mineral powder and phenolic resin. The weight portion ratio of montmorillonite clay to nano-sheet nickel oxide is 65:3, a step of; the weight part ratio of limestone, mineral powder and phenolic resin is 0.7:3:8. wherein, the thickness of the nano-sheet nickel oxide is 10nm; the particle size of limestone is 1mm.
The preparation method of the plastic for the incinerator comprises the following steps:
mixing 65 parts by weight of montmorillonite clay with 23 parts by weight of water, heating to 40 ℃, preserving heat for 10min, freeze-drying, crushing, mixing with 3 parts by weight of nano-sheet nickel oxide, and co-heating at 40 ℃ for 30min; wherein the grain size of the montmorillonite clay after freeze drying and crushing is 3mm. Mixing and heating the mixture with 0.7 part by weight of limestone, 3 parts by weight of mineral powder and 8 parts by weight of phenolic resin to 49 ℃ and then preserving heat for 20 minutes to obtain the plastic for the incinerator.
Example 6 preparation of Plastic for incinerator
A plastic for an incinerator, which comprises a component A and a component B; wherein, the component A comprises montmorillonite clay and nano-sheet nickel oxide; the component B comprises limestone, mineral powder and phenolic resin. The weight part ratio of montmorillonite clay to nano-sheet nickel oxide is 50:2; the weight part ratio of limestone, mineral powder and phenolic resin is 0.2:3:7. wherein, the thickness of the nano-sheet nickel oxide is 2nm; the particle size of the montmorillonite clay is 4mm; the particle size of limestone is 3mm.
The preparation method of the plastic for the incinerator comprises the following steps:
mixing 50 parts by weight of montmorillonite clay with 12.5 parts by weight of water, heating to 40 ℃, preserving heat for 5min, freeze-drying, crushing, mixing with 2-3 parts by weight of nano-sheet nickel oxide, and heating at 30 ℃ for 20min; wherein the grain size of the montmorillonite clay after freeze drying and crushing is 4mm. Mixing and heating the mixture with 0.2 part by weight of limestone, 3 parts by weight of mineral powder and 7 parts by weight of phenolic resin to 40 ℃ and then preserving heat for 20 minutes to obtain the plastic for the incinerator.
Test example 1 Performance test of incinerator Plastic prepared in examples 1 to 5
1. Method for measuring apparent porosity
(1) By a volume of 125cm 3 And weigh the dry sample mass m 1 ；
(2) After the sample is vacuumized, adding liquid to fully saturate the sample, and weighing the mass m of the saturated sample in the air 3 ；
(3) Apparent mass m of saturated sample 2 I.e. the mass of the saturated sample minus the mass of the displaced liquid when the saturated sample is completely submerged in the immersion liquid.
And (3) calculating: apparent porosity= (m) 3 -m 1 )÷(m 3 -m 2 )
2. Method for measuring heat conductivity coefficient
The plastic material is prepared into 30cm x 5cm blocks by a mould, and the blocks are placed into a protective hot plate heat conduction instrument to measure the heat conductivity coefficient.
3. Method for measuring flexural strength
The breaking strength refers to the ultimate breaking stress of the material when the unit area of the material bears bending moment, the test is carried out on a universal material tester, and a plastic test piece is a cylinder with the height of 10-16 mm and 120 mm.
TABLE 1
The apparent porosity is also called open porosity, and refers to the percentage of the volume of open pores in a refractory product to the total volume of the product, and can reflect the densification degree of the refractory material. As is clear from Table 1, the microstructure of the plastic for incinerator prepared according to the present invention is dense, reflecting the rationality of the size composition, molding and sintering of the plastic for incinerator in the present invention during the preparation process.
From the temperature change of the furnace body. Because of the temperature gradient along the thickness direction of the furnace wall, the furnace wall has a medium temperature section, and the change forms of the temperature gradient are nonlinear relations under the specific condition of heating the furnace wall. If the medium temperature strength of the material is low, there is a risk of delamination. The plastic for the incinerator has a compact fiber net structure, so that the strength of the plastic for the incinerator is greatly improved, and the layering and peeling risks are reduced.
In summary, the binders used in examples 1 to 4 were modified nitrile rubber-modified phenolic resins, and the binders used in examples 5 to 6 were non-modified phenolic resins, and from the results, it was found that incinerator plastic materials with low apparent porosity, low thermal conductivity and high flexural strength could be prepared using both binders; compared with the use of unmodified phenolic resin as the bonding agent, the nitrile rubber modified phenolic resin is used as the bonding agent, so that the apparent porosity and the heat conductivity coefficient can be further reduced, and the flexural strength can be further enhanced.
Test example 2 measurement of the change rate of the heating wire of the incinerator-use plastic prepared in examples 1 to 5
The change of the heating wire refers to the irreversible change of the length of the unshaped refractory material after heating, and is divided into a change of the drying wire and a change of the wire after burning. Because the unshaped refractory is generally not molded or burned, but is directly used for building thermal equipment by adding the bonding agent, the nature and the quantity of the added bonding agent are very important. During heating, shrinkage or expansion is necessarily generated due to the physicochemical reaction, and thus, the change of the heating wire is an important parameter for measuring the properties of the plastic. The method for measuring the change rate of the plastic heating wire for the incinerator comprises the following steps: adding water into the plastic to prepare a cuboid sample with the length of 160mm and 40mm, heating to 11015 ℃, drying to constant quantity, measuring the length unchanged before and after drying, calculating the change of a drying line, heating to a certain temperature, preserving heat for 3 hours, cooling, and determining the change of the plastic line after burning according to the length change rate of extension or shortening. The results are shown in Table 2.
TABLE 2 Plastic heating wire Change Rate for super incinerator (%)
When the unburned refractory material is subjected to high temperature in use, the volume is contracted due to sintering, and an expanding agent can be added to counteract the contraction, so that the purpose of volume stability is achieved. The plastic for the incinerator prepared by the invention has small volume change in the experiment of rapid temperature rise and drop, namely has strong tolerance to large-span temperature change and good high temperature resistance. The plastic for the incinerator disclosed by the invention does not use an expanding agent, but can achieve the effect of maintaining the volume stability of the refractory material. When the boiler needs frequent temperature change due to work, the boiler is not easy to crack or shrink, so that cracks are generated on the furnace wall.
In conclusion, the plastic for the incinerator, which is prepared by the invention, has low apparent porosity, low heat conductivity coefficient and high flexural strength, and meanwhile, under the condition of rapid temperature change, the plastic for the incinerator, which is prepared by the invention, has small volume change and good high temperature resistance; the plastic for the incinerator, which is prepared by the invention, has high density, high strength and stable volume, is not easy to crack or shrink, and can be used for different parts and different working conditions in the incinerator.
Example 7
Under the same technological conditions, montmorillonite clay with different particle sizes and nano-sheet nickel oxide are mixed and mixed to prepare plastic for an incinerator, and the specific steps are as follows: the preparation method is the same as in example 2, except that montmorillonite clay with different particle sizes is mixed, and the specific particle sizes and proportions of the montmorillonite clay are as follows:
(1) Montmorillonite clay with particle size of 3mm and montmorillonite clay with particle size of 5mm respectively account for 50%;
(2) Montmorillonite clay with particle size of 3mm and montmorillonite clay with particle size of 8mm respectively account for 50%;
(3) Montmorillonite clay with particle size of 5mm and montmorillonite clay with particle size of 8mm respectively account for 50%;
(4) The montmorillonite clay with the grain size of 3mm, the montmorillonite clay with the grain size of 5mm and the montmorillonite clay with the grain size of 8mm respectively account for 25%, 50% and 25%;
(5) The montmorillonite clay with the grain size of 3mm, the montmorillonite clay with the grain size of 5mm and the montmorillonite clay with the grain size of 8mm respectively account for 25%, 25% and 50%;
(6) The montmorillonite clay with the particle size of 3mm, the montmorillonite clay with the particle size of 5mm and the montmorillonite clay with the particle size of 8mm respectively account for 50%, 25% and 25%.
Test example 3
The performance of the six incinerator plastic materials prepared in example 7 was measured according to the measurement methods of test examples 1 and 2, and the results are shown in tables 3 to 4.
TABLE 3 Table 3
TABLE 4 Plastic heating wire Change Rate for super incinerator (%)
| (1) | (2) | (3) | (4) | (5) | (6) | |
| 110℃ | -0.18 | -0.14 | -0.18 | -0.13 | -0.16 | -0.15 |
| 1200℃ | 0.21 | 0.19 | 0.21 | 0.17 | 0.24 | 0.21 |
According to the results, compared with examples 1-6, the plastic for the incinerator, which is prepared by mixing montmorillonite clay with different particle sizes, has lower apparent porosity, lower heat conductivity coefficient and higher flexural strength; in addition, the best results are obtained in the case of the schemes (2) and (4) in example 7.
In conclusion, the invention provides the incinerator plastic with lower apparent porosity, lower heat conductivity coefficient and higher flexural strength and the preparation method thereof through optimizing the raw materials and the process conditions; the plastic material for the incinerator disclosed by the invention is less in raw material, simple in process, suitable for industrial application and wide in application prospect.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. A plastic for an incinerator, which is characterized by comprising a component A and a component B; wherein the component a comprises clay and divalent metal oxide; the component B comprises limestone, mineral powder and a binding agent.
2. The incinerator plastic according to claim 1, wherein the weight ratio of the component a to the component B is 52-83:10.2-17.7.
3. the incinerator plastic according to claim 2, wherein in the component a, the weight ratio of the clay to the divalent metal oxide is 50-80:2-3;
in the component B, the weight part ratio of the limestone, the fly ash and the bonding agent is 0.2-0.7:3-6:7-11.
4. the incinerator plastic according to claim 1, wherein the divalent metal oxide is nickel oxide; the clay is montmorillonite clay.
5. The incinerator plastic material according to claim 4, wherein the nickel oxide is nano-sheet nickel oxide.
6. The incinerator plastic according to any one of claims 1 to 5, wherein the binder is modified phenolic resin.
7. The incinerator plastic according to claim 6, wherein the modified phenolic resin is nitrile rubber modified phenolic resin.
8. A method for preparing the incinerator plastic according to any one of claims 1 to 7, comprising mixing and heating the component a and the component B to obtain the incinerator plastic.
9. The method according to claim 8, wherein the clay in the component a is mixed with water and then heated, and then freeze-dried and pulverized, and then mixed with the divalent metal oxide to be co-heated; and then mixing and heating the mixture with the component B to obtain the plastic for the incinerator.
10. Use of a plastic for incinerator according to any one of claims 1 to 7 or prepared by a method of preparation according to any one of claims 8 to 9 for the manufacture and/or repair of incinerators.
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| CN202310056229.6A CN116003145B (en) | 2023-01-18 | 2023-01-18 | Plastic for incinerator and preparation method thereof |
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| CN116003145B CN116003145B (en) | 2023-12-19 |
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| JPH1179871A (en) * | 1997-08-27 | 1999-03-23 | Harima Ceramic Co Ltd | Lining structure of incinerator |
| WO2016072572A1 (en) * | 2014-11-07 | 2016-05-12 | 김종혁 | Purifying catalyst for incinerator |
| CN109422529A (en) * | 2017-08-24 | 2019-03-05 | 江南大学 | A kind of high intensity CFB boiler high-alumina refractory is moldable |
| CN110128156A (en) * | 2019-06-19 | 2019-08-16 | 武汉市科达耐火有限责任公司 | Blast furnace iron notch mud covers reparation plastic refractory and preparation method thereof |
| CN113582588A (en) * | 2021-08-06 | 2021-11-02 | 河北雄安京德高速公路有限公司 | High-skid-resistance asphalt mixture and preparation method thereof |
| CN115010485A (en) * | 2022-05-06 | 2022-09-06 | 山西格盟中美清洁能源研发中心有限公司 | Refractory material for melting furnace and preparation method thereof |
-
2023
- 2023-01-18 CN CN202310056229.6A patent/CN116003145B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1179871A (en) * | 1997-08-27 | 1999-03-23 | Harima Ceramic Co Ltd | Lining structure of incinerator |
| WO2016072572A1 (en) * | 2014-11-07 | 2016-05-12 | 김종혁 | Purifying catalyst for incinerator |
| CN109422529A (en) * | 2017-08-24 | 2019-03-05 | 江南大学 | A kind of high intensity CFB boiler high-alumina refractory is moldable |
| CN110128156A (en) * | 2019-06-19 | 2019-08-16 | 武汉市科达耐火有限责任公司 | Blast furnace iron notch mud covers reparation plastic refractory and preparation method thereof |
| CN113582588A (en) * | 2021-08-06 | 2021-11-02 | 河北雄安京德高速公路有限公司 | High-skid-resistance asphalt mixture and preparation method thereof |
| CN115010485A (en) * | 2022-05-06 | 2022-09-06 | 山西格盟中美清洁能源研发中心有限公司 | Refractory material for melting furnace and preparation method thereof |
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| CN116003145B (en) | 2023-12-19 |
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