CN1070219A - Method for making briquette - Google Patents
Method for making briquette Download PDFInfo
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- CN1070219A CN1070219A CN 92106644 CN92106644A CN1070219A CN 1070219 A CN1070219 A CN 1070219A CN 92106644 CN92106644 CN 92106644 CN 92106644 A CN92106644 A CN 92106644A CN 1070219 A CN1070219 A CN 1070219A
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- coal
- ignition dope
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Abstract
A kind of Method for making briquette.It adds ignition dope in the raw material that coal dust, binding agent and water are formed.Its composition quality ratio is followed successively by catalyzer SODIUMNITRATE 30～38%, oxidant potassium permanganate 0.3～1%, sulphur-fixing agent yellow soda ash 2～4%, all the other are scarifying agent sodium-chlor.The present invention can economize on coal 10～25%, reduces SO
2Quantity discharged 70～80% has reduced oke exhaust blackness, NO quantity discharged and SO simultaneously
2Emission concentration improves 80～150 ℃ of fire box temperatures.It can be widely used in the making of civilian and industrial moulded coal.
Description
The present invention relates to civilian and industrial Method for making briquette.
Civilian and the industrial moulded coal in past is a raw material with coal dust, binding agent and water mostly, through mix, pressure forming makes.Come to this such as, city civil honeycomb briquette up to now and to make.In the raw material that this Method for making briquette adopted, binding agent can be a clay, also can be that cement adds 2～10% polyvinyl alcohol or lime processing industry salt.Application number be 90104112.2 and two patent applications of 91102123.X disclose such compound binding agent.But, do not add ignition dope in the raw material that above-mentioned prior art adopted mostly.Therefore, the burning of moulded coal is complete inadequately, calorific value is low; " evil mind " phenomenon is arranged in the moulded coal that fired, and moulded coal is nonflammable, and the waste of the energy is bigger.In addition,, be thermal decomposited into products such as free carbon black, so form black smoke and SO because the volatile matter in the moulded coal can perfect combustion
2, discharge such as NO, both polluted family, also polluted atmosphere, environment.Application number is that patent application employing lime and the industrial table salt of 91102123.X is compound binding agent.Industrial table salt has bulk preferably effect.But because lack catalyzer, oxygenant and sulphur-fixing agent, its combustion-supporting effect is undesirable, and it is also relatively poor to reduce the degree of polluting.
Purpose of the present invention just is to overcome above-mentioned shortcoming and defect, and a kind of Method for making briquette that can make thermo-efficiency height, good energy-conserving effect, moulded coal that pollution is few is provided.The moulded coal of making of present method should be able to the overheavy firing effect, improves fire box temperature, reduces boiler slag carbon content, eliminates " evil mind " phenomenon, reduces oke exhaust blackness, reduces SO
2, NO quantity discharged and concentration thereof, and can suitably adopt coal dust inferior to do raw material to be used to make moulded coal.
In order to achieve the above object, Method for making briquette of the present invention is mixed into mixture by the raw material stirring that coal dust, binding agent and water are constituted, and mixture operation such as plus-pressure moulding in mould is constituted.Also to add in the said raw material and account for quality of pc than 1.5～4 ‰ ignition dope.Its making method is: will account for quality of pc earlier and be dissolved in fully in the water of capacity than 1.5～4 ‰ ignition dope, and be added in the coal dust and mix thoroughly; In coal dust, add binding agent more in proportion; Add an amount of water and coal dust again and mix (generally being to add water while stirring); At last mixture is sent into the moulding of mould plus-pressure.The consumption of water is not strict, gets final product in right amount, but is difficult for very few or too much.The too loose not easy-formation of mixture when very few, moulded coal is frangible in the time of too much.The proportioning of binding agent belongs to prior art, but all is difficult for too much or very few.The moulded coal light that suppresses when an amount of, big, the difficult fragmentation of intensity.The add-on of ignition dope is advisable to account for 1.5～4 ‰ of quality of pc ratio, and effect is best.When very few, a little less than the combustion-supporting effect too.In the time of too much, cause waste.Cost improves.When making moulded coal, also can add coal dust together than 1.5～4 ‰ ignition dope and binding agent according to a certain ratio and stir accounting for quality of pc, the limit adds waterside stirring, plus-pressure moulding at last again.
The ignition dope that adds in the Method for making briquette raw material of the present invention is made of catalyzer, oxygenant, sulphur-fixing agent and scarifying agent, is a kind of sodium-chlor base coal burning accelerator.Catalyzer is a SODIUMNITRATE, and its mass ratio is 30～38%, and oxygenant is a potassium permanganate, and its mass ratio is 0.3～1%, and sulphur-fixing agent is a yellow soda ash, and its mass ratio is 2～4%, and all the other are sodium-chlor, and sodium-chlor is the scarifying agent.
Ignition dope main component sodium-chlor is a kind of scarifying agent.It can impel coal explosion and coal seam at high temperature bulk, has further improved intensity of combustion, and helps storage, the transportation of ignition dope, the safety that guarantees to use.The fusing point of sodium-chlor is higher, and under burner hearth high temperature, its crystal can explosion in the coal seam, stirred the gas in coal seam and the coal seam, burnt grain surface combustion product is comparatively fast broken away from, impel the combustion air scorching hot burnt grain surface of contact rapidly, help the perfect combustion and the after-flame of coal.Owing to become flexible the coal seam, also helped combustion air and in the coal seam, circulate.But when sodium chloride content was too high, the redundance effect was not discharged from very much.Content is crossed when hanging down, and the coal seam explosion is insufficient, and it is inhomogeneous to burn.
Potassium permanganate is a kind of oxygenant.Raw coal evaporates moisture in burner hearth after, temperature rises to when beginning to separate out the part volatile combustible matter, decomposes precipitated oxygen with regard to the composition of some potassium permanganate, and in the raw coal volatile combustible matter separate out temperature range approximately from 300 ℃ to more than 600 ℃.The decomposition temperature difference of oxygenant can progressively be decomposed precipitated oxygen in coal, this carbon granules to inflammable gas in the after-flame flue gas and suspension plays very big effect, thereby has reduced the consumption of coal and the blackness of flue gas.Potassium permanganate decomposes the back at a lower temperature and generates high oxide.This kind high oxide at high temperature still can progressively generate suboxide and precipitated oxygen.Quicken to have formed the coal combustion of semicoke shape or burnt shape carbon, form flameless combustion, improved the radiant heat density of burner hearth.The potassium permanganate mass ratio is that 0.3～1% o'clock effect is best.Content is crossed when hanging down, the oxygen deficiency, and it is insufficient to burn.When content was high, cost improved, and benefit reduces.
SODIUMNITRATE is a kind of catalyzer.It can impel coal seam burning by different level in burner hearth.Temperature with the coal seam progressively raises, and raw coal is progressively separated out volatile combustible matter.Catalyzer can be separated out with it basically synchronously, to remedy oxygen content of coal tolerance deficiency, promotes that the flame in this stage is prosperous, the burning complete, thereby reduces the blackness of exhaustion in this stage significantly.Ignition dope is a precipitated oxygen in the coal seam, and easy and inflammable gas mixing makes the ignition of flammable vapour temperature range big, and it is more thorough that the carbon grain combustion that wherein suspends is got.The adding of catalyzer impels semicoke, char combustion in inflammable gas, suspension carbon granules and the coal seam in the burner hearth complete, and fire box temperature is improved, thereby improves the thermo-efficiency of moulded coal.The mass ratio of SODIUMNITRATE is that 30～38% o'clock effects are best, and catalysis evenly, fully.Content is crossed when hanging down, and catalysis is not thorough.During too high levels, sodium chloride content reduces, and the coal seam explosion is not even, airiness is not enough, incomplete combustion.
Yellow soda ash is a kind of sulphur-fixing agent, has the function of solid sulphur, deodorizing, removing surface of burner hearth cigarette ash dirt.It can make slagging scorification thing porous and loose, and the bonding force of weakening Jiao and contact surface makes cinder be easy to efflorescence and removes.Simultaneously, it is with SO
2Obnoxious flavoures such as NO are fixed, make it to discharge with slag, thereby greatly reduce SO
2, NO quantity discharged and concentration thereof.The sulphur-fixing agent mass ratio is 2～5% o'clock, and effect is best.SO
2, NO quantity discharged and density loss effect thereof fairly obvious, it is fairly obvious that cigarette ash dirt is removed effect.When yellow soda ash was very few, sulfide, emitting nitride were many and dense, atmosphere pollution.In the time of too much, redundance is not had an effect and is discharged from, and causes waste, and cost also increases.This ignition dope is sulfur-bearing not, does not also have corrosive nature.
The adding of ignition dope impels inflammable gas suspension carbon granules in the burner hearth and the semicoke in the coal seam, and char combustion is complete, impels fire box temperature to raise naturally.Because the raising of fire box temperature impels the moulded coal sufficient combustion rapid again conversely, make burning form good mechanism, improved thermo-efficiency greatly, eliminated " evil mind ".
The ignition dope that the present invention uses is water-soluble, is sprayed to mix in the coal dust all after can be water-soluble and uses, and also pressed powder can be spread in the coal dust, and the adding additives mix adds water after evenly and mixes use again thoroughly again.Binding agent can be lime, cement etc., also can be clay.When using clay, cost is low, and is effective, and its mass ratio can be 2～16% of a coal dust.When using clay, the moulded coal that burnt easily crushing is discharged from grey-way, and is civilian convenient especially.
The task of Method for making briquette of the present invention comes to this and finishes.
The moulded coal energy overheavy firing effect that Method for making briquette of the present invention is made improves fire box temperature, reduces boiler slag carbon content, eliminates moulded coal " evil mind " phenomenon, reduces oke exhaust blackness, minimizing SO
2, the quantity discharged of NO and concentration thereof, thus reach thermo-efficiency height, fractional energy savings height, pollute few effect.In addition, present method can also suitably be mixed coal dust inferior and be made moulded coal.The moulded coal coal saving rate that present method is made can reach 15～25%, and fire box temperature can improve 80～150 ℃, SO
2Quantity discharged can reduce by 70～80%.SO
2Concentration reduces by 50～55%, and the NO quantity discharged reduces by 25～30%.Simultaneously, the present invention has also reduced funnel temperature, has improved intensity of combustion.The product that the present invention produces is nontoxic, non-corrosiveness, low environment pollutes, and is safe in utilization, can be widely used in civilian and industry in.
Below in conjunction with embodiment the present invention is done further explanation.
Embodiment 1: a kind of Method for making briquette.In the raw material of moulded coal, to add the ignition dope that accounts for quality of pc 4%.The composition quality ratio of ignition dope is followed successively by SODIUMNITRATE 30%, potassium permanganate 0.4%, yellow soda ash 3%, and surplus is sodium-chlor.They are mixed into solid powdery, and water-soluble back adds in the coal dust mixes thoroughly, and adding additives and water are mixed the plus-pressure moulding thoroughly again.Use this moulded coal fire box temperature to improve 100 ℃, coal saving rate reaches 15%, SO
2Quantity discharged reduces by 70%, and the NO quantity discharged reduces by 27%.
Embodiment 2: a kind of Method for making briquette.To add in the moulded coal raw material that to account for quality of pc be 1.5 ‰ ignition dope.Ignition dope composition quality ratio is followed successively by SODIUMNITRATE 38%, potassium permanganate 0.3%, yellow soda ash 4%, and surplus is sodium-chlor.It is Powdered to be mixed into soluble solids, and water-soluble back adds in the coal dust mixes thoroughly, and adding additives is mixed thoroughly in proportion again, and the limit adds the waterside and mixes thoroughly again, puts into the mould plus-pressure at last and makes moulded coal.Use this moulded coal, fire box temperature improves 110 ℃, and coal saving rate is 16%, SO
2Quantity discharged reduces by 80%, and the NO quantity discharged reduces by 25%, SO
2Concentration reduces by 30%.
Embodiment 3: a kind of Method for making briquette.The adding mass ratio is 2 ‰ ignition dope in the coal dust.Its composition quality ratio of ignition dope is followed successively by SODIUMNITRATE 36%, potassium permanganate 1%, yellow soda ash 2%, and surplus is sodium-chlor.After using the moulded coal of present method making, fire box temperature improves 80 ℃, and coal saving rate reaches 18%, SO
2Quantity discharged reduces by 75%, and the NO quantity discharged reduces by 25%, SO
2Quantity discharged reduces by 55%.
Embodiment 4: a kind of Method for making briquette.Adding mass ratio in the coal dust is 2.5 ‰ ignition dopes.The composition quality ratio is followed successively by SODIUMNITRATE 32%, potassium permanganate 0.3%, yellow soda ash 2.5%, and surplus is sodium-chlor.Be mixed into the soluble solids powder.The moulded coal that uses present method to make, fire box temperature improves 150 ℃, and coal saving rate reaches 25%, SO
2Concentration reduces by 54%, SO
2Quantity discharged reduces by 76%.
Embodiment 5: a kind of Method for making briquette.The adding mass ratio is 3 ‰ ignition dope in the coal dust.Ignition dope composition quality ratio is followed successively by SODIUMNITRATE 34.8%, potassium permanganate 0.35%, yellow soda ash 3.2%, and surplus is sodium-chlor.Be mixed into the soluble solids powder.The moulded coal that uses present method to make, fire box temperature improves 140 ℃, and coal saving rate reaches 19%, SO
2Concentration reduces by 50%, SO
2Quantity discharged reduces by 77%.
The moulded coal of the foregoing description production does not have corrosion, and is pollution-free, and safety is nontoxic, and the coal saving rate height can be widely used in the civilian and industry.
Claims (2)
1, a kind of by the raw material Stir that coal dust, binding agent and water are constituted mix be mixed into mixture, with mixture Method for making briquette that operation constituted such as plus-pressure moulding in mould, it is characterized in that also will adding the ignition dope that accounts for quality of pc 1.5～4 ‰ in the said raw material, the ignition dope of this proportioning mixed in the coal dust after soluble in water fully mix thoroughly, add binding agent again and water is mixed thoroughly, plus-pressure moulding in mould at last.
2, according to the described Method for making briquette of claim 1, it is characterized in that the ignition dope that adds in the said raw material is 30～38% catalyzer SODIUMNITRATE by mass ratio, mass ratio is that 0.3～1% oxidant potassium permanganate, mass ratio are constituted by 2～4% sulphur-fixing agent yellow soda ash and remaining scarifying agent sodium-chlor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106644 CN1070219A (en) | 1992-07-27 | 1992-07-27 | Method for making briquette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106644 CN1070219A (en) | 1992-07-27 | 1992-07-27 | Method for making briquette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1070219A true CN1070219A (en) | 1993-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106644 Pending CN1070219A (en) | 1992-07-27 | 1992-07-27 | Method for making briquette |
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| CN (1) | CN1070219A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052749C (en) * | 1998-03-18 | 2000-05-24 | 山西大学 | Fully fly-ash industrial briquet coal and making method thereof |
| CN1062299C (en) * | 1997-07-09 | 2001-02-21 | 沈涛 | Binder for waterproof stoving-free formed coal |
| CN1064994C (en) * | 1995-01-28 | 2001-04-25 | 西安正阳环保能源有限公司 | Sulfur-immobilizing coal-saving additive |
| CN101077986B (en) * | 2006-05-25 | 2010-11-03 | 林鼎华 | Multifunctional and highly effective synthesis ammonia gas preparation molded coal cementing agent |
| CN102272271A (en) * | 2009-01-16 | 2011-12-07 | 西门子Vai金属科技有限责任公司 | Method for producing pressed articles containing coal particles |
-
1992
- 1992-07-27 CN CN 92106644 patent/CN1070219A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064994C (en) * | 1995-01-28 | 2001-04-25 | 西安正阳环保能源有限公司 | Sulfur-immobilizing coal-saving additive |
| CN1062299C (en) * | 1997-07-09 | 2001-02-21 | 沈涛 | Binder for waterproof stoving-free formed coal |
| CN1052749C (en) * | 1998-03-18 | 2000-05-24 | 山西大学 | Fully fly-ash industrial briquet coal and making method thereof |
| CN101077986B (en) * | 2006-05-25 | 2010-11-03 | 林鼎华 | Multifunctional and highly effective synthesis ammonia gas preparation molded coal cementing agent |
| CN102272271A (en) * | 2009-01-16 | 2011-12-07 | 西门子Vai金属科技有限责任公司 | Method for producing pressed articles containing coal particles |
| CN102272271B (en) * | 2009-01-16 | 2015-11-25 | 西门子Vai金属科技有限责任公司 | Containing the manufacture method of the stampings of coal particle |
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