CN109679704A - A kind of boiler decoking agent - Google Patents
A kind of boiler decoking agent Download PDFInfo
- Publication number
- CN109679704A CN109679704A CN201811509269.7A CN201811509269A CN109679704A CN 109679704 A CN109679704 A CN 109679704A CN 201811509269 A CN201811509269 A CN 201811509269A CN 109679704 A CN109679704 A CN 109679704A
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- CN
- China
- Prior art keywords
- parts
- boiler
- nitrate
- coal
- coke
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- 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
-
- 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
-
- 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
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
Abstract
The present invention relates to a kind of boiler decoking agents, in parts by weight include: 20-30 parts of aluminum nitrate, 15-25 parts of borax, 20-30 parts of copper nitrate, 10-20 parts of ammonium nitrate, 5-10 parts of ammonium hydrogen carbonate, 6-10 parts of manganese dioxide, 10-15 parts of sodium citrate, 3-5 parts of sodium carbonate, 0.15-1 parts of rare earth addition.Beneficial effects of the present invention are as follows: promoting coal dust firing, reduce coking.The copper ion generated in coke-removing agent can react with coal ash, reduce the ignition point of carbon distribution, promote the burning of coal dust, simultaneously, inventors be surprised to learn that the presence of manganese dioxide more makes this process reaction rapider, the synergistic effect of manganese dioxide and copper nitrate is so that decoking effect is more preferable.Sodium citrate is mutually cooperateed with other components, and when with one combust of coal, smoke absorption sulfur dioxide can be removed in advance in burner hearth, in addition, its buffer function enhances absorption process, the exhaust gas containing sulfur dioxide from 500ppm to 5% can be handled, desulfurization degree is up to 80-90%, solves the problems, such as secondary pollution.
Description
Technical field
The present invention relates to chemical fields, and in particular to a kind of boiler decoking agent.
Background technique
Boiler coke is problem commonplace in operation, and burning boiler is since heat intensity is big, and ignition temperature is high, in pot
Furnace designs unreasonable or coal quality and changes etc. under the influence of various responsible factors, it is easy to serious coking and dust stratification are formed,
Coking is even more serious during high load capacity, and coking is a kind of biggish operational defect of harmfulness, and hot gas temperature can be caused to increase, and fishes out slag
Machine, slag crusher operation are difficult, fall down burnt sub cold water tube wall is smashed from pipe of bulk in furnace sometimes and spray water outward, cause to put out
The harm such as fiery blowing out.
The boiler coke in especially Large-scale machine set power plant is more serious, generally requires to tie using manually devoking in operational process
Coke is serious to cause blowing out manually to beat coke, seriously affects coal-burning power plant's safe operation, increases the labor intensity of worker, while
There is very big security risk to decoking work.
Existing liquid coke inhibitor quickly volatilizees under the high temperature conditions, does not mix like water and fire, it is difficult to which useful effect is in burnt body；And
Existing solid-state coke-removing agent sorting is improper, and proportion is unreasonable, is corrosive when in use to metal pipe-wall, while can not accomplish to remove
While big burnt old burnt inhibit that new coke button is prevented to be formed again.
In view of this, the present invention is specifically proposed.
Summary of the invention
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of boiler decoking agents, at least can be
Solve the function that desulfurization is realized while coke button in boiler.
Technical scheme is as follows:
A kind of boiler decoking agent includes: in parts by weight
Further, above-mentioned boiler decoking agent includes: in parts by weight
Further, above-mentioned boiler decoking agent is in solid granular.
Further, above-mentioned boiler decoking agent, grain graininess are 250-300 mesh.
Further, above-mentioned boiler decoking agent, grain graininess are 300 mesh.
Further, above-mentioned boiler decoking agent, the rare earth addition are nanoscale bastnaesite powder.
Beneficial effects of the present invention are as follows:
1, promote coal dust firing, reduce coking.The copper ion generated in coke-removing agent can react with coal ash, reduce carbon distribution
Ignition point, promote the burning of coal dust, meanwhile, inventors be surprised to learn that, the presence of manganese dioxide more makes this process reaction more
Rapidly, the synergistic effect of manganese dioxide and copper nitrate is so that decoking effect is more preferable.
2, sodium citrate is mutually cooperateed with other components, and when with one combust of coal, flue gas can be removed in advance in burner hearth
Sulfur dioxide absorption can be handled useless from 500ppm to 5% containing sulfur dioxide in addition, its buffer function enhances absorption process
Gas, desulfurization degree are up to 80-90%, solve the problems, such as secondary pollution.
3, ammonium nitrate is inside coke-removing agent and other collocation high temperature time-division solutions form nitrite and oxygen, toward inside focus layer
Infiltration, effectively quickly allows coke button to be cracked, can directly remove big coke.
4, borax, ammonium hydrogen carbonate, sodium carbonate and rare earth addition can reduce coking, make coke button shortcake, with the portion in coal dust
Divide substance to can produce reaction, coke button is made to generate uniform bubble, big burnt old coke fast decoupled is promoted voluntarily to fall off；Ammonium nitrate simultaneously
Minute explosive occurs at high temperature under high pressure, the shock wave of generation can realize decoking ash-removal effect.
5, boiler service life can be extended.Aluminum nitrate generates reaction under high temperature environment, can be formed in boiler heating surface
Fine and close aluminum oxide film forms protective film erosion resistant coating in furnace periphery of inner wall.
Specific embodiment
The present invention is described in detail below with reference to embodiment.
Embodiment 1
A kind of boiler decoking agent, component and weight percent are as follows: 20 parts of aluminum nitrate, 15 parts of borax, 15 parts of copper nitrate, nitre
20 parts of sour ammonium, 10 parts of ammonium hydrogen carbonate, 6 parts of manganese dioxide, 10 parts of sodium citrate, 5 parts of sodium carbonate, 0.15 part of rare earth addition.
Above-mentioned boiler decoking agent is the solid particle of 250 mesh of partial size mixed by said components.
Embodiment 2
A kind of boiler decoking agent includes following components in parts by weight: 20 parts of aluminum nitrate, 21 parts of borax, and 28 parts of copper nitrate,
15 parts of ammonium nitrate, 9 parts of ammonium hydrogen carbonate, 8 parts of manganese dioxide, 15 parts of sodium citrate, 3 parts of sodium carbonate, 1 part of rare earth addition.
Above-mentioned boiler decoking agent is the solid particle of 300 mesh of partial size mixed by said components.
Embodiment 3
A kind of boiler decoking agent includes following components in parts by weight: 20 parts of aluminum nitrate, 25 parts of borax, and 21 parts of copper nitrate,
20 parts of ammonium nitrate, 8 parts of ammonium hydrogen carbonate, 10 parts of manganese dioxide, 10 parts of sodium citrate, 4.5 parts of sodium carbonate, 0.5 part of rare earth addition.
Above-mentioned boiler decoking agent is the solid particle of 280 mesh of partial size mixed by said components.
Embodiment 4
A kind of boiler decoking agent includes following components in parts by weight: 20 parts of aluminum nitrate, 15 parts of borax, and 25 parts of copper nitrate,
19 parts of ammonium nitrate, 10 parts of ammonium hydrogen carbonate, 10 parts of manganese dioxide, 10 parts of sodium citrate, 3.5 parts of sodium carbonate, rare earth addition 0.75
Part.
Above-mentioned boiler decoking agent is the solid particle of 275 mesh of partial size mixed by said components.
Embodiment 5
A kind of boiler decoking agent includes following components in parts by weight: 20 parts of aluminum nitrate, 25 parts of borax, and 20 parts of copper nitrate,
20 parts of ammonium nitrate, 5 parts of ammonium hydrogen carbonate, 10 parts of manganese dioxide, 10 parts of sodium citrate, 4 parts of sodium carbonate, 0.6 part of rare earth addition.
Above-mentioned boiler decoking agent is the solid particle of 290 mesh of partial size mixed by said components.
Embodiment 6
A kind of boiler decoking agent includes following components in parts by weight: 30 parts of aluminum nitrate, 15 parts of borax, and 30 parts of copper nitrate,
10 parts of ammonium nitrate, 10 parts of ammonium hydrogen carbonate, 6 parts of manganese dioxide, 15 parts of sodium citrate, 3 parts of sodium carbonate, 0.7 part of rare earth addition.
Above-mentioned boiler decoking agent is the solid particle of 300 mesh of partial size mixed by said components.
Embodiment 7
A kind of boiler decoking agent includes following components in parts by weight: 23 parts of aluminum nitrate, 22 parts of borax, and 23 parts of copper nitrate,
18.5 parts of ammonium nitrate, 6 parts of ammonium hydrogen carbonate, 9 parts of manganese dioxide, 11.5 parts of sodium citrate, 4.2 parts of sodium carbonate, rare earth addition
0.65 part.
Above-mentioned boiler decoking agent is the solid particle of 285 mesh of partial size mixed by said components.
Embodiment 8
A kind of boiler decoking agent includes following components in parts by weight: 28 parts of aluminum nitrate, 17 parts of borax, and 28 parts of copper nitrate,
11 parts of ammonium nitrate, 9 parts of ammonium hydrogen carbonate, 7 parts of manganese dioxide, 14 parts of sodium citrate, 4 parts of sodium carbonate, 0.5 part of rare earth addition.
Above-mentioned boiler decoking agent is the solid particle of 295 mesh of partial size mixed by said components.
Embodiment 9
A kind of boiler decoking agent includes following components in parts by weight: 26 parts of aluminum nitrate, 19 parts of borax, and 25 parts of copper nitrate,
14 parts of ammonium nitrate, 7 parts of ammonium hydrogen carbonate, 7.9 parts of manganese dioxide, 12 parts of sodium citrate, 3.8 parts of sodium carbonate, rare earth addition 0.7
Part.
Above-mentioned boiler decoking agent is the solid particle of 260 mesh of partial size mixed by said components.
Experimental example
In order to verify the using effect of boiler decoking agent of the invention, using above-mentioned 9 embodiments, control group and blank group
Carry out boiler clinker removal effect test.Pilot boiler uses the same model of same manufacturer with a batch of 11, same by equivalent
After kind fired coal combustion test, the coking effect of ten pilot boilers is similar.The control group uses mixed by following parts by weight
The mixture that the component of conjunction is constituted: 40 parts of aluminum nitrate, 35 parts of borax, 16 parts of copper nitrate, 7 parts of ammonium nitrate.
11 pilot boilers number 1-11 respectively, is separately added into 11 parts of coals of equivalent；1-9 pilot boiler is by giving coal point
The coke-removing agent in the embodiment 1-9 of equivalent is added；Any equivalent with the coke-removing agent in embodiment 1-9 is added in No. 10 pilot boilers
Above-mentioned control group mixture；No. 11 pilot boilers blank group as a control group.It is carried out using above-mentioned 11 pilot boilers
Combustion test examines cinder and desulfurization results after combustion.As a result as shown in the table:
In table, cinder transformation period refers to that the time changed occurs in the sub- situation of coke of the cinder after using coke-removing agent.In table
Desulfurization degree be to detect in coal combustion exhaust after the content of sulfur dioxide, utilize No. 1-9 data to calculate with No. 11 blank group data
It obtains, wherein the SO 2 in waste gas content of No. 10 control groups and No. 11 blank groups are substantially without difference, so ignore not
Meter.
As can be seen from the above table, there is boiler decoking agent of the invention more preferable decoking effect to have both desulfurization effect.This hair
Bright coke-removing agent is swift in response, and can quickly remove that dissolution is burnt fast, the same day takes effect, and is suitable for each coal, and raw material is cheap is easy to get, makes
Standby simple process is used conveniently and safely, nonhazardous, corrosion-free, pollution-free.After being mixed into high-temperature burner hearth with coal, decoking
Agent can be adsorbed on focus layer surface, quickly permeate toward focus layer inner deep, and the oxygen released forces hard big coke block to be cracked
Burning changes focus layer internal crystal framework, promotes coke button, loose voluntarily to fall off, removing the coke button to get off during this reaction
Become the same soft uniform pinhole shape of image planes packet, while burnt, old burnt except bulk, and inhibit the new burnt formation of prevention,
The same day adds medicament, and the same day sees effect, especially regardless of coal regardless of the coal of which coal mine, as long as coking adds this coke-removing agent,
Afternoon after 8 dosings of morning it is seen that remove the burnt son to get off be it is loose, this effect speeds is fast and loose, in decoking
Have both desulfurization effect again simultaneously.The dedicated chemicals feeder that adds can be used from giving coal point in the position of addition coke-removing agent of the invention and method
Addition can also be added by negative-pressure pipeline or conveyer belt.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention
Within enclosing, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of boiler decoking agent, which is characterized in that include: in parts by weight
2. boiler decoking agent as described in claim 1, which is characterized in that include: in parts by weight
3. boiler decoking agent as claimed in claim 1 or 2, which is characterized in that be in solid granular.
4. boiler decoking agent as claimed in claim 3, which is characterized in that grain graininess is 250-300 mesh.
5. boiler decoking agent as claimed in claim 4, which is characterized in that grain graininess is 300 mesh.
6. boiler decoking agent as claimed in claim 1 or 2, which is characterized in that the rare earth addition is nanoscale fluorine carbon
Cerium miberal powder end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811509269.7A CN109679704A (en) | 2018-12-11 | 2018-12-11 | A kind of boiler decoking agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811509269.7A CN109679704A (en) | 2018-12-11 | 2018-12-11 | A kind of boiler decoking agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109679704A true CN109679704A (en) | 2019-04-26 |
Family
ID=66187153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811509269.7A Pending CN109679704A (en) | 2018-12-11 | 2018-12-11 | A kind of boiler decoking agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109679704A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110982579A (en) * | 2019-12-19 | 2020-04-10 | 湖北美和科技有限公司 | Boiler coking inhibitor and preparation method thereof |
| CN114317062A (en) * | 2022-01-26 | 2022-04-12 | 华润电力（渤海新区）有限公司 | Coke inhibiting and removing agent and method for removing coke between screens by using same |
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| CN1730630A (en) * | 2005-08-18 | 2006-02-08 | 金余兴 | High-performance energy-saving rare earth deashing and delayed action activator for boiler, and its manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110982579A (en) * | 2019-12-19 | 2020-04-10 | 湖北美和科技有限公司 | Boiler coking inhibitor and preparation method thereof |
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| CN114317062A (en) * | 2022-01-26 | 2022-04-12 | 华润电力（渤海新区）有限公司 | Coke inhibiting and removing agent and method for removing coke between screens by using same |
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Application publication date: 20190426 |
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