CN106085535A - A kind of moulded coal and preparation method thereof - Google Patents
A kind of moulded coal and preparation method thereof Download PDFInfo
- Publication number
- CN106085535A CN106085535A CN201610399277.5A CN201610399277A CN106085535A CN 106085535 A CN106085535 A CN 106085535A CN 201610399277 A CN201610399277 A CN 201610399277A CN 106085535 A CN106085535 A CN 106085535A
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- Prior art keywords
- coal
- moulded coal
- binding agent
- moulded
- dried
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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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- 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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
-
- 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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/105—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with a mixture of organic and inorganic binders
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/24—Mixing, stirring of fuel components
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/30—Pressing, compressing or compacting
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/32—Molding or moulds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention provides a kind of moulded coal and preparation method thereof.The moulded coal that the present invention provides includes coal and is binding agent prepared by the brown coal of 1:0.3 1:1.5 3, biomass fiber and strong base solution by mass ratio.The method preparing this moulded coal is: first prepare binding agent with brown coal, biomass fiber and strong base solution, then by binding agent and coal dust mix homogeneously, then sends in former compressing, is finally dried by moulded coal.The present invention provide briquet quality is good, low cost, environmentally friendly.The method preparing above-mentioned moulded coal provided by the present invention is very simple, easy industrial application.
Description
Technical field
The invention belongs to the preparation field of moulded coal, be specifically related to a kind of moulded coal and preparation method thereof.
Background technology
Biomass resource is one of abundant regenerative resource, and biomass coal is the new technique that development in recent years is got up,
By economizing on coal with biomass for the dual function of coal, reduce greenhouse gases CO2With coal-fired SO2Discharge, be conducive to alleviate weather become
Warm Acid Rain Pollution, is respectively provided with important meaning to protection environment and the saving energy, is an important directions of shaped coal technology development.
Summary of the invention
It is an object of the invention to provide a kind of moulded coal with low cost, environment amenable and preparation method thereof.
According to the present invention, first provide a kind of moulded coal, including coal and binding agent, it is characterised in that described binding agent includes
Brown coal, biomass fiber and strong base solution；The mass ratio of described brown coal, described biomass fiber and described strong base solution is 1:
0.3-1:1.5-3。
Further, the maximum particle diameter of described brown coal is 60-100 mesh.
Further, the mean diameter≤3mm of described biomass fiber.
Further, the concentration of described strong base solution is 1-5%.
Further, described moulded coal is pyrolysis moulded coal.
The present invention also provides for a kind of method preparing above-mentioned moulded coal, comprises the following steps:
Described binding agent is prepared with described brown coal, described biomass fiber and described strong base solution；
By described binding agent and coal dust mix homogeneously, prepare mixture；
Described mixture is sent in former compressing, prepares moulded coal；
Described moulded coal is dried.
Further, described binding agent is 0.02-0.06:1 with the mass ratio of described coal dust.
Further, the mean diameter≤3mm of described coal dust.
Further, the pressure of described former is 10-50MPa.
Further, described being dried is dried for two-part；The temperature that first paragraph is dried is 50-60 DEG C, and drying time is 1-
2h；The temperature that second segment is dried is 100-105 DEG C, and drying time is 1-2h.
The moulded coal that the present invention provides, intensity is good, and its volatile matter content is high, is particularly suitable for pyrolysis.Binding agent former
Material has biomass fiber, can reduce CO2And SO2Discharge.Additionally, due to the raw material sources that binding agent is used are extensive, price is low
Honest and clean, reduce the production cost of moulded coal.
The method preparing above-mentioned moulded coal provided by the present invention is very simple, and the requirement to relevant device is the lowest, easily
Industrial application.
Detailed description of the invention
Embodiments of the invention are specifically described below, illustrate the present invention with more readily apparent.Obviously, described embodiment is
A part of embodiment of the present invention rather than whole embodiment.Based on embodiments of the invention, those of ordinary skill in the art exist
The every other embodiment obtained on the premise of not paying creative work, broadly falls into the scope of protection of the invention.
The open a kind of moulded coal of the present invention, including coal and binding agent, it is characterised in that described binding agent includes brown coal, biology
Matter fiber and strong base solution；The mass ratio of described brown coal, described biomass fiber and described strong base solution is 1:0.3-1:1.5-
3。
In the binding agent of the moulded coal that the present invention provides, brown coal are masterbatch, will not increase type pit ash.Corruption in brown coal powder
Growing acid and have viscosity with strong base solution at the raw humate that can react, humate, wherein, sodium humate is a kind of conventional
Briquette binder.
Biomass fiber and strong base solution react generation alkali cellulose, are a kind of stickums, and activity is the highest.Fiber interlocks
It is wound around, can combine firmly with coal dust, therefore can effectively suppress generation and the development of moulded coal internal tiny crack, raising type
The shock resistance of coal.Additionally, the volatile matter of biomass fiber is less than coal higher than coal, thermal decomposition degree.The present invention uses biomass
Fiber, as binding agent raw material, had both achieved effective utilization of biomass resource, and can reduce the cost of binding agent, had
Environmental protection, advantage with low cost.
Biomass fiber used by the present invention can be rice straw, corn stalk, wheat stalk, wood flour or other.Caulis et Folium Oryzae straw
Stalk, corn stalk, wheat stalk and wood flour belong to the waste material producing or processing, and price is the cheapest.Due to calorific value and recycling property
Not quite, these four biomass fiber major part abandoned or on-site incineration, not only cause the waste of resource, also can cause environment
Pollute.
Find through the substantial amounts of experiment of inventor, described brown coal, described biomass fiber and the quality of described strong base solution
Than during for 1:0.3-1:1.5-3, the reaction between brown coal, biological fiber and strong base solution is relatively more complete, the bonding energy of binding agent
Power is strong, and the intensity of the moulded coal prepared is good, volatile matter is high.The concrete ratio of brown coal, biological fiber and strong base solution is by bonding coal
Character determine.
Further, the maximum particle diameter of described brown coal is 60-100 mesh.
Further, the mean diameter≤3mm of described biological fiber.
In the present invention, the particle diameter of brown coal and the particle diameter of biomass fiber are not required to be particularly limited to.But the particle diameter of brown coal and
The particle diameter of biomass fiber is too big, and its difficulty is reacted completely with strong base solution, and the binding agent bond effect prepared is very poor.Inventor's warp
Crossing substantial amounts of experiment to find, as mean diameter≤3mm that the maximum particle diameter of brown coal is 60-100 mesh, biological fiber, it is with strong
The reaction of aqueous slkali is more preferable, and is more beneficial for the intensity of the moulded coal prepared.
Further, the concentration of described strong base solution is 1-5%.
Inventor finds through substantial amounts of experiment, and when the concentration of strong base solution is 1-5%, it is fine with brown coal powder and biomass
The reaction of dimension is more preferable, and the binding agent prepared is better.
Further, described moulded coal is pyrolysis moulded coal.
Moulded coal provided by the present invention, owing to containing biomass fiber, than common moulded coal volatile matter more in its binding agent
Height, is therefore highly suitable for pyrolysis, is processed further, obtains being worth higher product.
The method preparing above-mentioned moulded coal that the present invention provides, comprises the following steps:
Described binding agent is prepared with described brown coal, described biomass fiber and described strong base solution；
By described binding agent and coal dust mix homogeneously, prepare mixture；
Described mixture is sent in former compressing, prepares moulded coal；
Described moulded coal is dried.
In above-mentioned preparation method, prepare the concrete operation step of its binding agent with brown coal, biomass fiber and strong base solution
And process conditions are not particularly limited, as long as can make react completely between three kinds of raw materials.
Above-mentioned preparation method is very simple, and the requirement to relevant device is the lowest, easy industrial application.
Further, described binding agent is 0.02-0.06:1 with the mass ratio of described coal dust.
In the present invention, binding agent is not required for being particularly limited to the mass ratio of coal dust.If binding agent is too much, not only can waste
Binding agent, increases cost, and the moulded coal prepared is soft, poorly enters former.Additionally, the follow-up dry of moulded coal also can be affected
Dry.Experiment finds, binding agent and the mass ratio of coal dust are that 0.02-0.06:1 is proper, and the briquet quality prepared is good.
Further, the mean diameter≤3mm of described coal dust.
In the present invention, coal particle size is not required to be particularly limited to.Coal particle size is little, and specific surface area is big, can be more with binding agent
Good combines.Inventor finds through substantial amounts of experiment, during the mean diameter≤3mm of coal dust, and prepared briquet quality
Good.
Further, the pressure of described former is 10-50MPa.
Former pressure is too small, and the intensity of moulded coal is low；Pressure is excessive, and former loss is big, and energy consumption is the biggest.This
In invention, the pressure of former is that 10-50MPa can meet requirement.
Further, being dried after briquette molding is dried for two-part；The temperature that first paragraph is dried is 50-60 DEG C, is dried
Time is 1-2h；The temperature that second segment is dried is 100-105 DEG C, and drying time is 1-2h.
The moulded coal moisture prepared by said method is high, is dried if being directly entered under hot environment, the water on moulded coal surface
Divide evaporation rapidly, and internal moisture cannot be diffused into surface rapidly, can cause hot-spot phenomenon, it is possible to type can be caused
The pyrolysis of coal.Employing two-part is dried, high after baking temperature is the lowest, can form certain temperature and humidity on moulded coal surface poor,
The moisture making inside is constantly evaporated, and drying effect is good, and the quality of the moulded coal obtained is good.
In the embodiment of the present invention, cold strength, calorific intensity, heat stability and ash fusibility is used to evaluate the intensity of moulded coal.
The detection method that its detection method is conventional in being industry.
In specific examples below, weighing raw materials used the most by weight, every part of weight is consistent.
Embodiment 1
First, raw material is prepared.The present embodiment uses rice straw and the sodium hydroxide solution of 1%.Rice straw is crushed
It is 3mm to mean diameter, brown coal crushing is become brown coal powder, cross 60 mesh sieves, take the powder that sieves standby.
Further, compound binding agent is prepared.Take 1 part of brown coal powder, 3 parts of sodium hydroxide solutions add in agitator tank, 95 DEG C of water
1h is stirred under conditions of bath heating.It is subsequently adding 0.3 part of rice straw and is stirred for 0.5h.
Further, moulded coal is prepared.Jet coal is crushed to the powdery granule that mean diameter is 3mm, weigh 215 parts standby
With.By long flame coal dust and compound binding agent mix homogeneously, send in the former that pressure is 10MPa and prepare moulded coal.By moulded coal
Sending in two-part drying equipment and be dried, the temperature that first paragraph is dried is 50 DEG C, and drying time is 2h；Second segment is dried
Temperature is 105 DEG C, and drying time is 1h..
Test the cold strength of dried moulded coal, calorific intensity, heat stability and ash fusibility.
The cold strength of moulded coal is 1075N/, and calorific intensity is 803N/, and heat stability is 70%, and softening temperature ST point is
1250℃。
Embodiment 2
First, raw material is prepared.The present embodiment uses rice straw and the sodium hydroxide solution of 5%.Rice straw is crushed
It is 2mm to mean diameter, brown coal crushing is become brown coal powder, cross 100 mesh sieves, take the powder that sieves standby.
Further, compound binding agent is prepared.Take 1 part of brown coal powder, 1.5 parts of sodium hydroxide solutions add in agitator tank, 70 DEG C
45min is stirred under conditions of heating in water bath.It is subsequently adding 1 part of rice straw and is stirred for 45min.
Further, moulded coal is prepared.Jet coal is crushed to the powdery granule that mean diameter is 2mm, weigh 87.5 parts standby
With.By long flame coal dust and compound binding agent mix homogeneously, send in the former that pressure is 50MPa and prepare moulded coal.By moulded coal
Sending in two-part drying equipment and be dried, the temperature that first paragraph is dried is 60 DEG C, and drying time is 1h；Second segment is dried
Temperature is 100 DEG C, and drying time is 2h.
Test the cold strength of dried moulded coal, calorific intensity, heat stability and ash fusibility.
The cold strength of moulded coal is 1143N/, and calorific intensity is 946N/, and heat stability is 75%, and softening temperature ST point is
1300℃。
Embodiment 3
First, raw material is prepared.The present embodiment uses rice straw and the sodium hydroxide solution of 3%.Rice straw is crushed
It is 3mm to mean diameter, brown coal crushing is become brown coal powder, cross 80 mesh sieves, take the powder that sieves standby.
Further, compound binding agent is prepared.Take 1 part of brown coal powder, 2 parts of sodium hydroxide solutions add in agitator tank, 80 DEG C of water
45min is stirred under conditions of bath heating.It is subsequently adding 0.6 part of rice straw and is stirred for 45min.
Further, moulded coal is prepared.Jet coal is crushed to the powdery granule that mean diameter is 3mm, weigh 60 parts standby.
By long flame coal dust and compound binding agent mix homogeneously, send in the former that pressure is 30MPa and prepare moulded coal.Moulded coal is sent into
Being dried in two-part drying equipment, the temperature that first paragraph is dried is 55 DEG C, and drying time is 1.5h；The temperature that second segment is dried
Degree is 103 DEG C, and drying time is 1.5h.
Test the cold strength of dried moulded coal, calorific intensity, heat stability and ash fusibility.
The cold strength of moulded coal is 1080N/, and calorific intensity is 865N/, and heat stability is 78%, and softening temperature ST point is
1320℃。
The cold strength of the moulded coal that the embodiment cited by the present invention is prepared is more than 1000N/, and calorific intensity is more than 800N/
Individual, heat stability is more than 70%, and softening temperature ST point is more than 1250 DEG C.The moulded coal prepared can be further fed into dry ash extraction gas
Change in stove and be pyrolyzed.As can be seen here, the briquette strength height of present invention offer, Heat stability is good, ash fusibility are high, prepare
Moulded coal is readily transported, stores and uses.
To sum up, it can be deduced that, the moulded coal that the present invention provides, intensity is good, and its volatile matter content is high, is particularly suitable for heat
Solve.The raw material of binding agent has biomass fiber, can reduce CO2And SO2Discharge.Additionally, due to the raw material that binding agent is used comes
Source is extensive, cheap, reduces the production cost of moulded coal.
The method preparing above-mentioned moulded coal provided by the present invention is very simple, and the requirement to relevant device is the lowest, easily
Industrial application.
Again illustrate, the foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention made, the mutual knot of technical characteristic between the most each embodiment
Close, or be directly or indirectly used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. a moulded coal, including coal and binding agent, it is characterised in that described binding agent includes brown coal, biomass fiber and highly basic
Solution；The mass ratio of described brown coal, described biomass fiber and described strong base solution is 1:0.3-1:1.5-3.
Moulded coal the most according to claim 1, it is characterised in that the maximum particle diameter of described brown coal is 60-100 mesh.
Moulded coal the most according to claim 1, it is characterised in that the mean diameter≤3mm of described biomass fiber.
Moulded coal the most according to claim 1, it is characterised in that the concentration of described strong base solution is 1-5%.
Moulded coal the most according to claim 1, it is characterised in that described moulded coal is pyrolysis moulded coal.
6. a preparation method for moulded coal as described in arbitrary in claim 1-5, comprises the following steps:
Described binding agent is prepared with described brown coal, described biomass fiber and described strong base solution；
By described binding agent and coal dust mix homogeneously, prepare mixture；
Described mixture is sent in former compressing, prepares moulded coal；
Described moulded coal is dried.
Preparation method the most according to claim 6, it is characterised in that described binding agent with the mass ratio of described coal dust is
0.02-0.06:1。
Preparation method the most according to claim 6, it is characterised in that the mean diameter≤3mm of described coal dust.
Preparation method the most according to claim 6, it is characterised in that the pressure of described former is 10-50MPa.
Preparation method the most according to claim 6, it is characterised in that described being dried is that two two-parts are dried；First paragraph is done
Dry temperature is 50-60 DEG C, and drying time is 1-2h；The temperature that second segment is dried is 100-105 DEG C, and drying time is 1-2h.
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| CN201610399277.5A CN106085535A (en) | 2016-06-07 | 2016-06-07 | A kind of moulded coal and preparation method thereof |
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| CN201610399277.5A CN106085535A (en) | 2016-06-07 | 2016-06-07 | A kind of moulded coal and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108192679A (en) * | 2018-01-26 | 2018-06-22 | 上海泽玛克敏达机械设备有限公司 | A kind of moulded coal and its preparation method and application |
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| CN108192679A (en) * | 2018-01-26 | 2018-06-22 | 上海泽玛克敏达机械设备有限公司 | A kind of moulded coal and its preparation method and application |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161109 |