CN102199465A - Additive for coal - Google Patents
Additive for coal Download PDFInfo
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- CN102199465A CN102199465A CN201110084612XA CN201110084612A CN102199465A CN 102199465 A CN102199465 A CN 102199465A CN 201110084612X A CN201110084612X A CN 201110084612XA CN 201110084612 A CN201110084612 A CN 201110084612A CN 102199465 A CN102199465 A CN 102199465A
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- coal
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Abstract
The invention discloses an additive which is added into coal and capable of improving burning conditions of coal. The additive consists of the following components in part by weight: 13 to 16 parts of potassium nitrate or potassium permanganate, 4 to 8 parts of lead nitrate, 60 to 71 parts of sodium chloride and 2 to 5 parts of potassium chlorate. Tests show that: when the additive is added, the burning conditions of coal is improved, the temperatures of inner flame and middle flame are both raised, the fame length, flame density and flame area are increased, the burning rate of the burning area is increased, the radiation and convection heat transfers are improved, the energy density of fuel in unit area is improved, and the temperature of the burning area is raised, and thus, the combustion efficiency of a boiler is improved, and a large amount of coal is saved.
Description
Technical field
The present invention relates to a kind ofly in coal, add, to improve the additive of fired coal combustion situation.
Background technology
For improving coal-fired combustion case, reduce and pollute, available technology adopting in fire coal, suitably add some properties-correcting agent.Chinese invention patent application 98112676 discloses a kind of process for preparing energy-saving quickly-burning gray honeycombed briquet, this patent application is the material that interpolation mainly is made up of Potcrate, saltpetre, Repone K, ferric oxide, bulk material, lime in existing yellow female honeycomb briquette etc., reach and both save energy coal, it is fast to start to exchange fire again, the flame height, eliminate coal sulphur foul smell, reduce the environmental pollution effect.Chinese invention patent application 92115150.0 discloses the energy-conservation pollution reducing coal additive of a kind of coal, this additive mainly by potassium permanganate, sodium-chlor, yellow soda ash by a certain percentage thorough mixing make.Add this additive in hard coal or the bituminous coal together burning by a certain percentage according to this patent application is described, can improve boiler thermal output and coal saving rate, can also eliminate the factor that directly causes environmental pollution greatly.Chinese invention patent application 97105071.6 discloses a kind of coal-fired fume-eliminating energy-saving additive, contain saltpetre, SODIUMNITRATE, salt of wormwood, yellow soda ash, ferrous sulfate in the raw materials used component, the weight ratio of each component is: saltpetre 0.1～0.4, SODIUMNITRATE 0.1～0.4, salt of wormwood 0.1～0.5, yellow soda ash 2～8, ferrous sulfate 0.2～0.6.It is the obnoxious flavoures such as sulfurous gas, hydrogenchloride and oxynitride in directly removing smoke in the coal burning process by additive, can also improve thermal value 400,000 kilocalorie/tons, the thermal value that is equivalent to 80-100 kilogram coal has reduced the burning cost, has purified the flue gas of boiler.The disclosed high efficient coal additive of China invention 200610032354.X is made up of the miscellany of sweetening agent, raising agent, ignition dope, smoke suppressor and inhibiter, contains CaO, NH in the sweetening agent
4HCO
3, ZnO, SiO
2Composition; Contain NaHCO in the raising agent
3, KAl (SO
4)
212H
2O, acidifying coal gangue composition; Contain Fe in the ignition dope
2O
3, MgO, KCl composition; Inhibiter is a humic acids; KMnO
4Being smoke suppressor, also is ignition dope; NaNO
3Being ignition dope, also is inhibiter.
But existing these additive for fire coal preparation costs are higher relatively, and its usage quantity is relatively large, added organic substance or other similar substance in quite a few in addition, in the new pollution substance discharging of its unavoidable generation in burning back.
Summary of the invention
The invention provides a kind of prior art deficiency that overcomes, manufacturing cost is lower, and usage quantity is less, the better alkene coal additive of result of use.
Additive for fire coal of the present invention form and weight ratio be:
Saltpetre or potassium permanganate 13-16 weight part, lead nitrate 4-8 weight part, sodium-chlor 60-71 weight part, Potcrate 2-5 weight part.
The sulphur-fixing agent of 22-30% that also has the gross weight of (saltpetre or potassium permanganate+lead nitrate+sodium-chlor+Potcrate) in the additive for fire coal of the present invention.Used sulphur-fixing agent can be a yellow soda ash among the present invention, it also can be calcium oxide, it also can be the mixture of yellow soda ash and calcium oxide, wherein the sodium carbonate add-on is the 10-15% of the gross weight of (saltpetre or potassium permanganate+lead nitrate+sodium-chlor+Potcrate), and the calcium oxide add-on is the 12-15% of the gross weight of (saltpetre or potassium permanganate+lead nitrate+sodium-chlor+Potcrate).
In the additive for fire coal of the present invention, saltpetre, Potcrate and high manganese potassium are oxygenant, produce certain comburant oxygen in burning; Sodium-chlor is raising agent, can play loose coal-fired effect in combustion processes, and the oxygen that enters in the combustion zone can be contacted with fire coal better, improves combustion conditions; Yellow soda ash and calcium oxide are sulphur-fixing agent, and the sulphur in the fire coal is combined with it, prevent to form sulfur oxide emissions and pollute.Also can be added with lead nitrate among the present invention, can further promote combustion processes as catalyzer.
After in fire coal, adding the present invention the coal fugitive constituent is fully decomposed, and reach certain concentration, form combustion gases, participate in burning, thereby play the effect of combustion-supporting and energy-saving.Can make that carbon content is reduced to below 6.2% in the lime-ash after the burning.
Additive for fire coal of the present invention has following advantage:
1, adds the temperature that has improved flame internal flame, middle flame behind the additive for fire coal of the present invention, the length of flame, flame density and flame area have been increased greatly, rate of combustion in the combustion zone is accelerated, radiation and convective heat transfer increase, improved the energy density of unit surface fuel, increase the temperature of combustion zone, thus improved boiler efficiency of combustion, saved a large amount of fire coals.
2, the present invention is specially adapted to the pressed powder burning of coal, and the powder coal combustion loss is reduced below 10%, and gas the heat loss due to incomplete combustion reduce to below 3%.
3, can obviously lower the discharging of flue gas, the flue gas lingemann blackness is cut down more than 20%.
4, coal-fired coal saving rate can reach 15-25% behind use the present invention.
The results showed that additive for fire coal of the present invention can make the burner hearth core temperature improve more than 100 ℃, efficiency of combustion improves more than 10%, reduces boiler slag carbon content below 20%, SO
2Quantity discharged reduces more than 15～30%, coal saving rate 15～25%.
Embodiment
The present invention is below in conjunction with the most preferred embodiment explanation:
Press saltpetre 8～10, sodium-chlor 38～45, high manganese potassium 5～10, yellow soda ash 10～15, Potcrate 1.5～3, calcium oxide 12～15, lead nitrate 3～5 takes by weighing each component, and above each component is weight part.Each component is dissolved in the water of 10～20 times of weight, the back ratio in 1.5 kilograms of solids quality of coal interpolation per ton that stirs is sprayed onto in the fire coal equably and gets final product.The fire coal that sprays the additive aqueous solution of the present invention can be gone into stove and be burnt.
Carried out the Actual combustion test on December 30th, 2008, being tried the boiler model is DZL6-125-A II, the coal-fired two class brown coal that adopt the solid powdery of Jingyuan, Gansu Coal Production, and the test coal amount is per hour 500 kilograms, the blower fan condition is fixed in the test.Experimental test result such as table 1.
Table 1
| Sequence number | Test duration | Fire box temperature ℃ | Coal conveyor rotating speed r/h |
| 1 | 12:00 | 726 | 500 |
| 2 | 12:05 | 736 | 500 |
| 3 | 12:10 | 750 | 500 |
| 4 | 12:15 | 752 | 500 |
| 5 | 12:20 | 747 | 500 |
| 6 | 12:25 | 746 | 500 |
| 7 | 12:30 | 743 | 500 |
| 8 | 12:35 | 751 | 500 |
| 9 | 12:40 | 777 | 500 |
| 10 | 12:45 | 805 | 500 |
| 11 | 12:50 | 788 | 500 |
| 12 | 12:55 | 785 | 500 |
| 13 | 13:00 | 763 | 500 |
| 14 | 13:05 | 793 | 500 |
| 15 | 13:10 | 765 | 500 |
| 16 | 13:15 | 763 | 500 |
| 17 | 13:20 | 788 | 500 |
| 18 | 13:25 | 802 | 500 |
| 19 | 13:30 | 804 | 500 |
| 20 | 13:35 | 798 | 500 |
| 21 | 13:40 | 808 | 500 |
| 22 | 13:45 | 802 | 500 |
| 23 | 13:50 | 792 | 500 |
| 24 | 13:55 | Slagging-off |
Comparative example carries out on the same day with last test, uses with preceding table 1 and tests identical fire coal and consumption, and the blower fan controlled variable but does not add additive for fire coal of the present invention as hereinbefore in the fire coal, tried the operation of boiler trouble-free burning before the test, test result such as table 2.
Table 2:
| Sequence number | Test duration | Fire box temperature ℃ | Coal conveyor rotating speed r/h |
| 1 | 10:00 | 632 | 500 |
| 2 | 10:05 | 626 | 500 |
| 3 | 10:10 | 587 | 500 |
| 4 | 10:15 | 584 | 500 |
| 5 | 10:20 | 600 | 500 |
| 6 | 10:25 | 606 | 500 |
| 7 | 10:30 | 600 | 500 |
| 8 | 10:35 | 601 | 500 |
| 9 | 10:40 | 597 | 500 |
| 10 | 10:45 | 591 | 500 |
| 11 | 10:50 | 574 | 500 |
| 12 | 10:55 | 553 | 500 |
| 13 | 11:00 | 523 | 500 |
| 14 | 11:05 | 514 | 500 |
| 15 | 11:10 | 504 | 500 |
| 16 | 11:15 | 505 | 500 |
| 17 | 11:20 | 511 | 500 |
| 18 | 11:25 | 510 | 500 |
| 19 | 11:30 | 517 | 500 |
| 20 | 11:35 | 530 | 500 |
| 21 | 11:40 | 555 | 500 |
| 22 | 11:45 | 611 | 500 |
| 23 | 11:50 | 683 | 500 |
| 24 | 11:55 | Slagging-off |
Claims (5)
1. additive for fire coal is characterized in that it consists of:
Saltpetre or potassium permanganate 13-16Wt part lead nitrate 4-8Wt part sodium-chlor 60-71Wt part Potcrate 2-5Wt part.
2. additive for fire coal according to claim 1 is characterized in that the sulphur-fixing agent of the 22-30% of the gross weight that it also has (saltpetre or potassium permanganate+lead nitrate+sodium-chlor+Potcrate) in forming.
3. additive for fire coal according to claim 4 is characterized in that used sulphur-fixing agent is a yellow soda ash.
4. additive for fire coal according to claim 4 is characterized in that used sulphur-fixing agent is a calcium oxide.
5. additive for fire coal according to claim 2, it is characterized in that used sulphur-fixing agent is yellow soda ash and calcium oxide, wherein the sodium carbonate add-on is the 10-15% of the gross weight of (saltpetre or potassium permanganate+lead nitrate+sodium-chlor+Potcrate), and the calcium oxide add-on is the 12-15% of the gross weight of (saltpetre or potassium permanganate+lead nitrate+sodium-chlor+Potcrate).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110084612XA CN102199465A (en) | 2011-04-03 | 2011-04-03 | Additive for coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110084612XA CN102199465A (en) | 2011-04-03 | 2011-04-03 | Additive for coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102199465A true CN102199465A (en) | 2011-09-28 |
Family
ID=44660456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110084612XA Pending CN102199465A (en) | 2011-04-03 | 2011-04-03 | Additive for coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102199465A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666631A (en) * | 2013-12-02 | 2014-03-26 | 南昌大学 | Preparation method of coal additive |
| CN104789295A (en) * | 2015-04-16 | 2015-07-22 | 廖德仲 | Cement rotary kiln liquid coal combustion promoting sulfur-fixing agent and production method thereof |
| CN105296050A (en) * | 2015-10-15 | 2016-02-03 | 阳开金 | Coal-saving combustion-supporting agent and preparation method thereof |
| CN108251677A (en) * | 2018-01-24 | 2018-07-06 | 株洲创林合金有限责任公司 | A kind of metal smelting deslagging agent and preparation method thereof |
| CN111171890A (en) * | 2020-03-18 | 2020-05-19 | 中山市绿浪助剂有限公司 | Energy-saving coal combustion improver |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134096A (en) * | 1984-07-25 | 1986-02-18 | Osaka Gas Co Ltd | Solid fuel |
| CN1386833A (en) * | 2001-05-17 | 2002-12-25 | 张千民 | Sandwith compound as environmentally friendly energy-saving combustion promoter and its preparing process |
| CN1563296A (en) * | 2004-03-23 | 2005-01-12 | 张千民 | Environmental protection type energy saving combustion adjuvant in sandwich compound form for coal |
| CN101089153A (en) * | 2006-06-14 | 2007-12-19 | 宫志利 | Industrial hot puffed briquette |
| CN101434884A (en) * | 2007-11-16 | 2009-05-20 | 范伟光 | Energy-saving coal combustion adjuvant and preparation thereof |
-
2011
- 2011-04-03 CN CN201110084612XA patent/CN102199465A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134096A (en) * | 1984-07-25 | 1986-02-18 | Osaka Gas Co Ltd | Solid fuel |
| CN1386833A (en) * | 2001-05-17 | 2002-12-25 | 张千民 | Sandwith compound as environmentally friendly energy-saving combustion promoter and its preparing process |
| CN1563296A (en) * | 2004-03-23 | 2005-01-12 | 张千民 | Environmental protection type energy saving combustion adjuvant in sandwich compound form for coal |
| CN101089153A (en) * | 2006-06-14 | 2007-12-19 | 宫志利 | Industrial hot puffed briquette |
| CN101434884A (en) * | 2007-11-16 | 2009-05-20 | 范伟光 | Energy-saving coal combustion adjuvant and preparation thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103666631A (en) * | 2013-12-02 | 2014-03-26 | 南昌大学 | Preparation method of coal additive |
| CN104789295A (en) * | 2015-04-16 | 2015-07-22 | 廖德仲 | Cement rotary kiln liquid coal combustion promoting sulfur-fixing agent and production method thereof |
| CN105296050A (en) * | 2015-10-15 | 2016-02-03 | 阳开金 | Coal-saving combustion-supporting agent and preparation method thereof |
| CN108251677A (en) * | 2018-01-24 | 2018-07-06 | 株洲创林合金有限责任公司 | A kind of metal smelting deslagging agent and preparation method thereof |
| CN111171890A (en) * | 2020-03-18 | 2020-05-19 | 中山市绿浪助剂有限公司 | Energy-saving coal combustion improver |
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Application publication date: 20110928 |