CN118308153A - Special decoking agent for rotary kiln ring formation and preparation method thereof - Google Patents
Special decoking agent for rotary kiln ring formation and preparation method thereof Download PDFInfo
- Publication number
- CN118308153A CN118308153A CN202410419544.5A CN202410419544A CN118308153A CN 118308153 A CN118308153 A CN 118308153A CN 202410419544 A CN202410419544 A CN 202410419544A CN 118308153 A CN118308153 A CN 118308153A
- Authority
- CN
- China
- Prior art keywords
- rotary kiln
- special
- agent
- decoking
- ring formation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005235 decoking Methods 0.000 title claims abstract description 42
- 238000007363 ring formation reaction Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 239000004067 bulking agent Substances 0.000 claims abstract description 7
- 239000007800 oxidant agent Substances 0.000 claims abstract description 7
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- WMVRXDZNYVJBAH-UHFFFAOYSA-N dioxoiron Chemical compound O=[Fe]=O WMVRXDZNYVJBAH-UHFFFAOYSA-N 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000004939 coking Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 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
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 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
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a special decoking agent for rotary kiln ring formation and a preparation method thereof, and particularly relates to the field of decoking agents. The invention provides a special decoking agent for rotary kiln ring formation, which comprises the following raw materials: the oxidant sodium carbonate, the bulking agent sodium bicarbonate, the carbon particles, the catalyst ferric oxide and the activated carbon. The preparation method comprises the following steps: and stirring the raw materials, uniformly mixing, and drying to obtain the special decoking agent for the rotary kiln ring formation. The special decoking agent for rotary kiln ring formation prepared by the invention can well play roles of decoking and preventing coking in material combustion, so that equipment runs normally, and good benefits of energy conservation and synergy are achieved.
Description
Technical Field
The invention belongs to the field of decoking agents, and particularly relates to a special decoking agent for rotary kiln ring formation and a preparation method thereof.
Background
The ring formation of the rotary kiln is a common phenomenon in the operation of enterprises at present, and is a great difficulty in the operation. The rotary kiln is a long cylindrical container made of refractory materials, one end of the rotary kiln is a material inlet, and the other end of the rotary kiln is a heat source. The rotary kiln is widely applied to cement production, metallurgy, chemical industry, construction and other industries, and is an important device for manufacturing cement, lime, kaolin, titanium dioxide, iron ore particles and other products.
However, the problem of ring formation of the rotary kiln has become a common phenomenon in the running of enterprises at present, and is also a great difficulty in the running. The ring forming of the rotary kiln is the annular adhesion phenomenon of furnace burden which occurs on the inner wall of a high-temperature zone in the rotary kiln. The phenomenon of slight sticking is called kiln coating, and if sticking occurs, it affects the normal operation of the furnace, which is called looping. The main reason for the adhesion growth is the oxidizing atmosphere in the kiln, and the secondary reason is that the floating bodies (FeO) with too high temperature in the kiln, insufficient reducing agent in the material layer or low reduction enter a high temperature zone. The mechanism of adhesion in the kiln is as follows: the pellets are subjected to friction and stress in the kiln, and the generated mixture of mineral powder and coal ash is subjected to oxidation action of furnace gas when rotating from the point A to the point B, so that the partially reduced mineral powder is oxidized into a float body (FeO), and forms low-melting-point ferric silicate with SiO 2 in the coal ash, and is softened and adhered to the furnace wall at the temperature of 1050-1100 ℃. When FeO is not much formed, the adhered powder can be peeled off by self weight. When the oxidizing atmosphere is strong or the temperature is too high, more low-melting materials are formed, the viscosity is increased, the kiln is not peeled off until the point C, the kiln coating is formed, and if the kiln coating is adhered continuously, the kiln coating forms a loop. It is known that the phenomenon of ring formation of the rotary kiln causes a great deal of fuel waste, equipment damage and product quality degradation, greatly increases labor force and production instability, however, no good solution exists at present. Therefore, how to research a decoking agent capable of effectively removing the ring formation of the rotary kiln is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a special decoking agent for rotary kiln ring formation and a preparation method thereof.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a special decoking agent for rotary kiln ring formation, which comprises the following raw materials: oxidizing agent, bulking agent, carbon particles and catalyst.
Further, the raw materials comprise the following components in parts by mass: 10-20 parts of oxidant, 10-20 parts of bulking agent, 10-20 parts of carbon particles and 20-40 parts of catalyst.
Further, the oxidizing agent includes sodium carbonate.
Further, the bulking agent comprises sodium bicarbonate.
Further, the carbon particles have a particle size of 3-6mm.
Further, the catalyst includes iron dioxide and activated carbon.
Further, the mass ratio of the ferric oxide to the activated carbon is 1:1.
The invention also provides a preparation method of the special decoking agent for rotary kiln ring formation, which comprises the following steps:
And stirring the raw materials, uniformly mixing, and then drying at 110 ℃ for 120min to obtain the special decoking agent for the rotary kiln ring formation.
Compared with the prior art, the invention has the following beneficial effects:
the special decoking agent prepared by the invention can well play roles of decoking and coking prevention in the combustion process of the decoking agent and materials, so that equipment runs normally, and good benefits of energy conservation and synergy are achieved. And because ash with low heat conductivity is removed, the combustion heat conductivity is directly improved, and the heat loss is reduced, thereby saving energy. And also reduces the emission of harmful gases, reduces environmental pollution, reduces the corrosion rate of metals, and prolongs the service life of related equipment.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
The "parts" described in the examples of the present invention are all in parts by mass.
Example 1
The special decoking agent for rotary kiln ring formation comprises the following raw materials:
10 parts of sodium carbonate, 15 parts of sodium bicarbonate, 20 parts of carbon particles, 12 parts of ferric oxide and 12 parts of activated carbon.
A preparation method of a special decoking agent for rotary kiln ring formation comprises the following steps: the raw materials are stirred and mixed uniformly, and then dried for 120min at 110 ℃ to obtain the decoking agent special for rotary kiln ring formation.
Example 2
The special decoking agent for rotary kiln ring formation comprises the following raw materials:
20 parts of sodium carbonate, 10 parts of sodium bicarbonate, 15 parts of carbon particles, 10 parts of ferric oxide and 10 parts of activated carbon.
A preparation method of a special decoking agent for rotary kiln looping is the same as in example 1.
Example 3
The special decoking agent for rotary kiln ring formation comprises the following raw materials:
16 parts of sodium carbonate, 20 parts of sodium bicarbonate, 10 parts of carbon particles, 20 parts of ferric oxide and 20 parts of activated carbon.
A preparation method of a special decoking agent for rotary kiln looping is the same as in example 1.
Comparative example 1
The special decoking agent for rotary kiln ring formation is different from the embodiment 1 in that the catalyst is 24 parts of ferric oxide;
the rest of the raw materials are the same as in example 1.
A preparation method of a special decoking agent for rotary kiln looping is the same as in example 1.
Comparative example 2
The special decoking agent for rotary kiln ring formation is different from the embodiment 1 in that the catalyst is 24 parts of active carbon;
the rest of the raw materials are the same as in example 1.
A preparation method of a special decoking agent for rotary kiln looping is the same as in example 1.
Performance testing
The performances of the special decoking agents for rotary kiln ring-forming prepared in the above examples 1-3 and comparative examples 1-2 were tested, and the test results are shown in table 1.
TABLE 1
As is clear from Table 1, the temperature of the comparative examples 1 and2 was maintained at 110℃or higher by the above-mentioned color measurement and the temperature measurement by the temperature measuring gun at the beginning of the operation, and the temperatures of the comparative examples were lowered to 100℃or lower with the lapse of time, resulting in serious ring formation and the kiln had to be stopped.
After the decoking agent is added, the temperature is kept above 110 ℃, so that the long time can be greatly prolonged, and the kiln is not required to be stopped for ring formation during the whole year.
And the coal saving rate can be seen from the coal saving rate, the coal saving rate is more than 15% after the decoking agent is used, and compared with comparative examples 1 and 2 without the decoking agent, the energy sources are greatly reduced.
In the foregoing, the protection scope of the present invention is not limited to the preferred embodiments, and any person skilled in the art, within the scope of the present invention, should be covered by the protection scope of the present invention by equally replacing or changing the technical scheme and the inventive concept thereof.
Claims (8)
1. The special decoking agent for the rotary kiln ring formation is characterized by comprising the following raw materials: oxidizing agent, bulking agent, carbon particles and catalyst.
2. The decoking agent special for rotary kiln looping according to claim 1, wherein the raw materials are as follows in parts by mass: 10-20 parts of oxidant, 10-20 parts of bulking agent, 10-20 parts of carbon particles and 20-40 parts of catalyst.
3. The rotary kiln looper-specific decoking agent of claim 1, wherein the oxidizing agent comprises sodium carbonate.
4. The rotary kiln looper-specific decoking agent of claim 1, wherein the bulking agent comprises sodium bicarbonate.
5. The decoking agent special for rotary kiln looping according to claim 1, wherein the granularity of the carbon particles is 3-6 mm.
6. The decoking agent special for rotary kiln looping of claim 1, wherein the catalyst comprises iron dioxide and activated carbon.
7. The decoking agent special for rotary kiln looping according to claim 6, wherein the mass ratio of the ferric oxide to the activated carbon is 1:1.
8. A method for preparing a decoking agent special for rotary kiln looping according to any one of claims 1 to 7, comprising the following steps:
And stirring the raw materials, uniformly mixing, and then drying at 110 ℃ for 120min to obtain the special decoking agent for the rotary kiln ring formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410419544.5A CN118308153A (en) | 2024-04-09 | 2024-04-09 | Special decoking agent for rotary kiln ring formation and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410419544.5A CN118308153A (en) | 2024-04-09 | 2024-04-09 | Special decoking agent for rotary kiln ring formation and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118308153A true CN118308153A (en) | 2024-07-09 |
Family
ID=91721888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410419544.5A Pending CN118308153A (en) | 2024-04-09 | 2024-04-09 | Special decoking agent for rotary kiln ring formation and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118308153A (en) |
-
2024
- 2024-04-09 CN CN202410419544.5A patent/CN118308153A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2441083C1 (en) | Method of fabricating vanadium products by fluidisation | |
| US4257806A (en) | Fired iron-ore pellets having macro pores and process for producing the same | |
| CN101302456A (en) | Highly effective coal combustion improver and preparation thereof | |
| CN114804678A (en) | Composite cement raw material grinding-aiding coal-saving agent and preparation method and application thereof | |
| JP4236714B2 (en) | Cement manufacturing method | |
| CN110002859B (en) | Corrosion-resistant ceramic roller and preparation method thereof | |
| CN108191269A (en) | A kind of production method of active lime | |
| CN118308153A (en) | Special decoking agent for rotary kiln ring formation and preparation method thereof | |
| CN113528812A (en) | Preparation method of wear-resistant alkaline pellets | |
| US11891677B2 (en) | Additive for reducing the roasting temperature of fluxed magnetite pellets and a method of using it | |
| CN115043433B (en) | Treatment process of oil-containing catalyst | |
| CN114524442B (en) | Method for recycling and clean utilization of aluminum ash in grinding station | |
| CN108191268A (en) | A kind of method for refining of active metallurgical lime | |
| CN113233920A (en) | Modification method for improving chlorine corrosion resistance of refractory material | |
| CN112665404A (en) | Method for reducing emission of nitric oxide in rotary kiln waste gas | |
| CN118217798B (en) | Polygonal desulfurizing agent for pure dry desulfurizing process and preparation method thereof | |
| CN112209644B (en) | Method for producing silicate cement clinker by using high-sulfur coal as chromium removal agent | |
| CN214502124U (en) | Magnesite low-nitrogen calcining device | |
| CN109554208A (en) | A kind of high efficiency coal-saving agent | |
| CN106367155A (en) | Desulfidation, denitration and decoking clean catalytic seriflux capable of saving coal | |
| CN118184208B (en) | Mineralization catalyst for dry-method cement rotary kiln clinker production and preparation method thereof | |
| CN113735452B (en) | High-strength refractory fiber and preparation method thereof | |
| CN118146013A (en) | Method for inhibiting carbon deposition of alumina-based refractory material in CO atmosphere | |
| SU1620429A1 (en) | Method of producing portland cement clinker | |
| CN117801862A (en) | Coal-saving catalyst and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |