CN1062753A - Coal-saving additive - Google Patents
Coal-saving additive Download PDFInfo
- Publication number
- CN1062753A CN1062753A CN 91109451 CN91109451A CN1062753A CN 1062753 A CN1062753 A CN 1062753A CN 91109451 CN91109451 CN 91109451 CN 91109451 A CN91109451 A CN 91109451A CN 1062753 A CN1062753 A CN 1062753A
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- CN
- China
- Prior art keywords
- coal
- additive
- saving
- saving additive
- cao
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- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
A kind of coal-saving additive is with CaMg (CO
3)
2Make for main raw material, join a certain proportion of CaO, NaNO
3And Fe
3O
2Make.It is all applicable that this additive can be used for the above raw coal of 3950kCa/kg, also can be used for coal gangue, high tile phase ash or low grade coal and mix use with raw coal and additive.Can improve the combustion efficacy of raw coal, solve the problem of the utilization of waste material of coal gangue, blast furnace dust.This additive has raw material and is easy to get, the advantage that producing and manufacturing technique is simple, with low cost.
Description
The present invention is a kind of coal-saving additive, is used for the interpolation material of coal burning process.
Present existing coal-saving additive has, and is basic raw material with the industrial and mining waste, is equipped with that an amount of metallic compound, metal tailings and organic chemicals and wood chip make, as application number: 89102573.1, coal saving combustion additive; Also have the steel powder that is cut is added in the incendiary coal and goes, make it play moulding, combustion-supporting effect, have as application number: 89103255.X, a kind of combustion energy saving additive, these coal-saving additives certain economize on coal, combustion-supporting effect, but effect is not ideal enough.
The objective of the invention is to propose a kind of new coal-saving additive.This additive not only can improve the efficiency of combustion of raw material, reduces the consumption of raw coal, simultaneously, can also make coal gangue, blast furnace dust and raw coal and coal-saving additive be mixed together burning, to solve the problem of coal gangue and blast furnace dust utilization of waste material.
Main technical schemes of the present invention is that this coal-saving additive is with CaMg(CO
3)
2Bai Fangshi is a main raw material, joins a certain proportion of Fe
2O
3Ferric oxide, Cao calcium oxide and NaNo
3SODIUMNITRATE is made.
Technique effect of the present invention is, because the composition of Cao is arranged, Cao content is increased to has avoided occurring the minimum fusing point of lime-ash zone more than 55%, thereby improved ash melting point in this coal-saving additive of one, the lime-ash coking amount is reduced, help the abundant burning of coal; Its two since additive in contain Cao, CaMg(Co
3)
2Gu the sulphur composition, lime-ash solution neutral and alkali oxide compound increases, and slag viscosity is reduced, and it is loose that lime-ash becomes, and carbon content in coal is also corresponding to become loose, and combustion processes expands to the internal-combustion of carbonaceous volume by single surface combustion like this; Its three additives composition produces O in the inner gasification of carbon granules
2Very fast with its velocity of diffusion of Co, cause burning to be mixed to loose carbon-coating.CaMg(Co in addition
3)
2The Cao, the volume ratio CaCo of Mgo that decompose
3, MgCo
3Few, increased CaMg(Co
3)
2With the gap on C surface, the coal combustion reaction surface is increased, combustive activation can reduce, and has improved the combustion reactions activity, has played the overheavy firing effect, makes incendiary more abundant; It is four because the additive composition is participated in desulfurization reaction and famous thermite reaction, and these all are heat-producing chemical reactions, thus fire box temperature is raise greatly, so more help the abundant burning of coal.Therefore, this coal-saving additive has the raising efficiency of combustion, improves the function of combustionvelocity, by the evidence effect stability.Boiler thermal output raising 10～15%, fire box temperature are improved more than 100 ℃, and combustionvelocity improves 10%, and coal saving rate can reach 28%.This additive not only is adapted to raw coal simultaneously, and can be used for coal gangue, makes itself and raw coal, additive mixed firing in blast furnace dust or the low grade coal, solves utilization of waste material.This additive has that raw material is easy to get, processing method is simple, cost is low, the high advantage of tariff of economizing on coal.
Realize that most preferred embodiment of the present invention is, this coal-saving additive is with CaMg(Co
3)
2For main raw material adds a certain proportion of Fe
2O
3, NaNo
3, Cao makes, the weight ratio of its composition is CaMg(Co
3)
2Be 70～20%, Fe
2O
3Be 20～5%, cao is 7～55%, NaNo
3Be 3～20%.
NaNo in this coal-saving additive
3Also available ammonium nitrate or other gunpowder residues replace, and its weight ratio is 3～20%; The activator species that also can add a little cupric oxide class simultaneously is to increase its intensity of activation.
The manufacture method of this coal-saving additive is, with cao, CaMg(Co
3)
2Be broken for 5～10mm granularity, or directly buy cao, the CaMg(Co of 5～10mm granularity
3)
2, then with Fe
2O
3And NaNo
3Directly add, the pack that stirs promptly can be finished product.Guard against damp, waterproof keeping.
The using method of this coal-saving additive is: additive mixes its weight proportion of raw coal and is: raw coal 94～96%, coal-saving additive 6～4%; Additive mixes that its weight proportion is in the coal gangue: raw coal 78～82%, coal gangue 15～13%, coal-saving additive 7～5%; Additive mixes that its weight proportion is raw coal 80～83%, blast furnace dust 13～12%, coal-saving additive 7～5% in the blast furnace dust.
This coal-saving additive all is suitable at the above raw coal of 3950kca/kg for calorific value.
This coal-saving additive also can be used for the manufacturing processed of industrial shaping coal, mixes the certain proportion additive, can improve the efficiency of combustion of moulded coal.
Claims (3)
1, a kind of coal-saving additive is characterized in that this coal-saving additive is with CaMg (CO
3)
2Be main raw material, join a certain proportion of Fe
2O
3, CaO and NaNO
3Make, the weight ratio of its composition is CaMg (CO
3)
2Be 70～20%, Fe
2O
3Be 20～5%, CaO is 7～55%, NaNO
3Be 3～20%.
2, coal-saving additive according to claim 1 is characterized in that, NaNo
3Available ammonium nitrate or other gunpowder residues replace, and its weight ratio is 3～20%.
3, according to claim 1,2 described additives, it is characterized in that, also can add the activator species of a little cupric oxide class in its composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109451 CN1026495C (en) | 1991-11-22 | 1991-11-22 | Coal-saving additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109451 CN1026495C (en) | 1991-11-22 | 1991-11-22 | Coal-saving additive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1062753A true CN1062753A (en) | 1992-07-15 |
| CN1026495C CN1026495C (en) | 1994-11-09 |
Family
ID=4909829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91109451 Expired - Fee Related CN1026495C (en) | 1991-11-22 | 1991-11-22 | Coal-saving additive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1026495C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058983C (en) * | 1997-09-17 | 2000-11-29 | 四川鉴威篁氏净化粉有限责任公司 | Efficient purifying granulated coal and its preparation method |
-
1991
- 1991-11-22 CN CN 91109451 patent/CN1026495C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058983C (en) * | 1997-09-17 | 2000-11-29 | 四川鉴威篁氏净化粉有限责任公司 | Efficient purifying granulated coal and its preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1026495C (en) | 1994-11-09 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |