CN105861107A - Ash removal and antiseptic treatment process for pulverized coal fired boiler - Google Patents
Ash removal and antiseptic treatment process for pulverized coal fired boiler Download PDFInfo
- Publication number
- CN105861107A CN105861107A CN201610264044.4A CN201610264044A CN105861107A CN 105861107 A CN105861107 A CN 105861107A CN 201610264044 A CN201610264044 A CN 201610264044A CN 105861107 A CN105861107 A CN 105861107A
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- CN
- China
- Prior art keywords
- fired boiler
- coal fired
- pulverized
- strong oxidizer
- boiler
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
- C10L9/12—Oxidation means, e.g. oxygen-generating compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/04—Use of additives to fuels or fires for particular purposes for minimising corrosion or incrustation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/06—Use of additives to fuels or fires for particular purposes for facilitating soot removal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/02—Treating solid fuels to improve their combustion by chemical means
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses an ash removal and antiseptic treatment process for a pulverized coal fired boiler, comprising the following steps: a, carrying out alkalifying treatment on anthracite with sodium hydroxide, pulverizing the alkalified anthracite into powder; b, respectively pulverizing potassium nitrate, potassium chlorate, charcoal and iodine-containing sodium chloride into powder, then evenly mixing the powder to compose a strong oxidizer; and c, evenly mixing the alkalified anthracite powder with the strong oxidizer composed of the potassium nitrate, potassium chlorate, charcoal and iodine-containing sodium chloride, and delivering the mixture into a pulverized coal fired boiler by an air pump to carry out combustion. The ash removal and antiseptic treatment process has antiseptic effects on boiler headers, preheaters and pipe walls, is capable of quickly shedding ash scale from the surfaces, and can reduce the coal consumption of boilers and improve efficiency.
Description
Technical field
The present invention relates to pulverized-coal fired boiler technical field, especially, relate to the deashing anticorrosion treatment technology of a kind of pulverized-coal fired boiler.
Background technology
Pulverized-coal fired boiler is during burning, water-cooling wall and superheater etc. can produce serious dust stratification, and the thermal efficiency that the result of dust stratification will cause boiler reduces, blocking exhaust gases passes, and cause superheat steam temperature to raise, thus endanger the safe operation of boiler, boiler water wall possibly even can be caused to be heated uneven and cause the disastrous effect of squib, and boiler dust stratification in combustion is a kind of vicious cycle phenomenon from aggravation, if obviously the phenomenon of collecting ash effectively not being processed, by the safe and economical operation of serious harm boiler.In order to reasonably use fuel, save the energy, alleviate atmospheric pollution, protection environment, to remove the cigarette (grey) that is attached on boiler tube bundle dirty, is a problem anxious to be resolved.
Solution is selective sootblowing at present, and soot blowing can only blow the floating ash on boiler tube bundle off, and it is helpless to the flue dust hard scale of boiler tube bundle formation, can only manually root out, but after radiation heating-surface back and convection heating surface, cannot be carried out manually rooting out because being stopped by above tube bank, cause boiler thermal output to decline.Proving according to test, the thermal resistance of cigarette (grey) hard scale is 400 times of steel plate (pipe), the most generally endangers cigarette (grey) hard scale on boiler tube bundle and there is no good plan.
Summary of the invention
Present invention aim at providing the deashing anticorrosion treatment technology of a kind of pulverized-coal fired boiler, to solve in prior art, the intractable problem of cigarette (grey) hard scale in pulverized-coal fired boiler.
For achieving the above object, the present invention provides the deashing anticorrosion treatment technology of a kind of pulverized-coal fired boiler, comprises the following steps: a, anthracite Caustic soda is carried out basification after be crushed to powdery；B, by potassium nitrate, potassium chlorate, Linesless charcoal and it is crushed to powdery containing sodium iodide chloride respectively, then mix homogeneously composition strong oxidizer；C, alkalization coal dust and potassium nitrate, potassium chlorate, Linesless charcoal and the strong oxidizer containing sodium iodide chloride composition are mixed homogeneously after, send into burning in pulverized-coal fired boiler with air pump.
Further, described alkalization coal dust and described strong oxidizer, the coal dust that alkalizes as described in every 100kg adds the proportioning of strong oxidizer described in 0.8kg-1kg and mixes.
Further, the particle diameter of described alkalization coal dust is less than 0.2mm.
Further, described potassium nitrate, described potassium chlorate, described Linesless charcoal are less than 0.15mm with the described particle diameter containing sodium iodide chloride.
The method have the advantages that
This deashing anticorrosion process connects case to boiler, preheater, tube wall have antisepsis, and its surface black dirt is had fast-falling ability, boiler can be made to reduce coal consumption, improve efficiency.
Detailed description of the invention
Hereinafter embodiments of the invention are described in detail.
The preferred embodiments of the present invention provide the deashing anticorrosion treatment technology of a kind of pulverized-coal fired boiler, comprise the following steps: a, anthracite Caustic soda is carried out basification after be crushed to powdery；B, by potassium nitrate, potassium chlorate, Linesless charcoal and it is crushed to powdery containing sodium iodide chloride respectively, then mix homogeneously composition strong oxidizer；C, alkalization coal dust and potassium nitrate, potassium chlorate, Linesless charcoal and the strong oxidizer containing sodium iodide chloride composition are mixed homogeneously after, send into burning in pulverized-coal fired boiler with air pump.This deashing anticorrosion process connects case to boiler, preheater, tube wall have antisepsis; a protective layer can be formed in metal surface, prevent the sour gas (such as the sulfur dioxide) corrosion to metal surface, and its surface black dirt is had fast-falling ability; boiler can be made to reduce coal consumption, improve efficiency.
Preferably, described alkalization coal dust and described strong oxidizer, the coal dust that alkalizes as described in every 100kg adds the proportioning of strong oxidizer described in 0.8kg-1kg and mixes.
Preferably, for ensureing that alkalization coal dust fully burns with the strong oxidizer of interpolation, the particle diameter of described alkalization coal dust is less than 0.2mm.Described potassium nitrate, described potassium chlorate, described Linesless charcoal and the described particle diameter containing sodium iodide chloride are less than 0.15mm.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention；For a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (4)
1. the deashing anticorrosion treatment technology of a pulverized-coal fired boiler, it is characterised in that comprise the following steps:
A, anthracite Caustic soda is carried out basification after be crushed to powdery；
B, by potassium nitrate, potassium chlorate, Linesless charcoal and it is crushed to powdery containing sodium iodide chloride respectively, then mix homogeneously composition strong oxidizer；
C, alkalization coal dust and potassium nitrate, potassium chlorate, Linesless charcoal and the strong oxidizer containing sodium iodide chloride composition are mixed homogeneously after, send into burning in pulverized-coal fired boiler with air pump.
The deashing anticorrosion treatment technology of pulverized-coal fired boiler the most according to claim 1, it is characterised in that:
Described alkalization coal dust and described strong oxidizer, the coal dust that alkalizes as described in every 100kg adds the proportioning of strong oxidizer described in 0.8kg-1kg and mixes.
The deashing anticorrosion treatment technology of pulverized-coal fired boiler the most according to claim 1 and 2, it is characterised in that:
The particle diameter of described alkalization coal dust is less than 0.2mm.
The deashing anticorrosion treatment technology of pulverized-coal fired boiler the most according to claim 1 and 2, it is characterised in that:
Described potassium nitrate, described potassium chlorate, described Linesless charcoal and the described particle diameter containing sodium iodide chloride are less than 0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610264044.4A CN105861107A (en) | 2016-04-26 | 2016-04-26 | Ash removal and antiseptic treatment process for pulverized coal fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610264044.4A CN105861107A (en) | 2016-04-26 | 2016-04-26 | Ash removal and antiseptic treatment process for pulverized coal fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105861107A true CN105861107A (en) | 2016-08-17 |
Family
ID=56629086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610264044.4A Pending CN105861107A (en) | 2016-04-26 | 2016-04-26 | Ash removal and antiseptic treatment process for pulverized coal fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105861107A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059360A (en) * | 1990-08-30 | 1992-03-11 | 朱朝木 | Formula of dust-removing anti-corrosion agent for boiler and production method |
-
2016
- 2016-04-26 CN CN201610264044.4A patent/CN105861107A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059360A (en) * | 1990-08-30 | 1992-03-11 | 朱朝木 | Formula of dust-removing anti-corrosion agent for boiler and production method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |