CN105713695A - Method for manufacturing coal briquettes and device thereof - Google Patents
Method for manufacturing coal briquettes and device thereof Download PDFInfo
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- CN105713695A CN105713695A CN201510795164.2A CN201510795164A CN105713695A CN 105713695 A CN105713695 A CN 105713695A CN 201510795164 A CN201510795164 A CN 201510795164A CN 105713695 A CN105713695 A CN 105713695A
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- 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
- C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
- C10L5/16—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders with bituminous binders, e.g. tar, pitch
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- 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
-
- 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
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- 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
- C10L5/12—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with 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
- 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
- C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic 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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
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- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention provides a method for manufacturing coal briquettes and a device thereof. The method includes a raw material coal supply step for supplying the raw material coal with a certain grain size; a binder and curing agent supply step for supplying a binder and a curing agent mixed in the raw material coal; a mixing step for mixing the raw material coal supplied by the raw material coal supply step and the binder and the curing agent supplied by the binder and the curing agent supply step; a first coal briquette manufacturing step for performing molding on a mixing coal of the raw material coal, the binder and the curing agent in the mixing step so as to manufacture the coal briquettes; a grain screening step for screening the coal briquettes with a grain more than the standard grain and powder coal briquettes with the grain less than the standard grain from the coal briquettes manufactured in the first coal briquette manufacturing step; and a second coal briquette manufacturing step for performing molding on the powder coal briquettes after the powder coal briquettes screened by the grain screening step are received, and manufacturing the coal briquettes.
Description
Technical field
The present invention relates to a kind of method manufacturing moulded coal and equipment thereof, especially manufacture method and the equipment thereof of the moulded coal being used as thermal source and reducing agent in ironmaking technique of fusion and reduction.More particularly it relates to an powder moulded coal is made directly molding to improve the method manufacturing moulded coal and the equipment thereof of briquetting process efficiency, described powder moulded coal results from the manufacturing process of the moulded coal in ironmaking technique of fusion and reduction for melting gasification furnace.
Background technology
In blast furnace iron-making process, ironmaking technique of fusion and reduction is directly to use the common coal being difficult to be used as fuel and reducing agent and directly use the iron ore technique to manufacture molten iron as source of iron.In ironmaking technique of fusion and reduction, the FINEX technique adopting the melting gasification furnace being connected with fluid bed reduction reactor is typical practical technology.Make for the moulded coal of melting gasification furnace and stored afterwards, during now carrying, the chute (chute) between conveyer belt and conveyer belt can be subject to shock of a fall, and set down weight can be subject at warehouse (bin), therefore it should be ensured that sufficient cold conditions quality.
In order to ensure cold conditions quality, feed coal is broken into suitable granularity and manufactures mixed coal, be dried to after being blended into improving the additive of hot quality and there is suitable moisture, and use binding agent and firming agent to be finally made moulded coal.
After moulded coal manufacturing process, producing the powder moulded coal of about 10%～15% in the process stored, the granularity of these powder moulded coals is below standard particle size, thus can not load melting gasification furnace.The powder moulded coal so produced is used further to material treatment process or hybrid technique.The standard particle size that can load the moulded coal of melting gasification furnace can be 5mm～50mm.
The powder moulded coal produced in moulded coal manufacturing process proportion in moulded coal yield is relatively big, is about 10%～15%.These powder moulded coals are used further to feed coal and load technique or hybrid technique, but surcharge can occur its operation of equipment and maintenance for this input, causes that moulded coal manufacturing cost rises.And, powder moulded coal being used for from the warehouse (stockhouse) producing powder moulded coal feed coal again and loads technique, meeting is in distance and is spatially very limited, thus investment burden is big.Moreover, the equipment put into re-use there will be various problem, therefore causes that briquetting process operating rate reduces.
When re-using powder moulded coal, the uneven meeting such as the granularity of powder moulded coal or moisture causes briquet quality deviation occur, and stable moulded coal task management is negatively affected.Especially, when the reduction of cold conditions quality causes that powder moulded coal generation amount increases, underproduce relative to melting gasification furnace aequum moulded coal, melting gasification furnace working performance can be caused also cannot to improve.In order to re-use powder moulded coal, if the method adopted compared with technique is the same, load at feed coal in technique or hybrid technique and re-use powder moulded coal, then make consumption can account for the about 5wt%～20wt% of feed coal, thus be same rank with existing moulded coal production capacity, although loss will not be had but nonsensical, it is only re-use.
In order to solve the problems referred to above, it is loaded into the warehouse (Stockhouse) of melting gasification furnace at generation powder moulded coal simultaneously, the powder moulded coal produced in technique is adjusted to there is suitable moisture, moulded coal is produced by straight forming when not adding binding agent, re-use technique simplifying existing powder moulded coal, reduce the surcharge occurred in processing procedure.Owing to powder moulded coal does not use together with feed coal, the mass deviation of moulded coal can be reduced, and by powder moulded coal straight forming and load smelting furnace at warehouse (stockhouse) together with common moulded coal after producing moulded coal, and then production capacity is increased to existing moulded coal production capacity plus powder moulded coal generation rate.
Summary of the invention
Technical problem
It is an object of the invention to provide a kind of method manufacturing moulded coal and equipment thereof, it is loaded into the warehouse (Stockhouse) of melting gasification furnace at generation powder moulded coal simultaneously, the powder moulded coal produced in moulded coal manufacturing process is adjusted to there is suitable moisture, moulded coal is produced by straight forming when not adding binding agent, re-use technique simplifying existing powder moulded coal, reduce the surcharge occurred in processing procedure, owing to powder moulded coal does not use together with feed coal, the mass deviation of moulded coal can be reduced, and by powder moulded coal straight forming and load smelting furnace at warehouse (stockhouse) together with common moulded coal after producing moulded coal, and then production capacity is increased to existing moulded coal production capacity plus powder moulded coal generation rate.
Technical scheme
According to the present invention one exemplary, it is possible to provide a kind of method manufacturing moulded coal, including:
Feed coal supply step, supply has the feed coal of a certain size granularity；
Binding agent and firming agent supply step, supply is mixed into the binding agent in described feed coal and firming agent；
Blend step, will be mixed by the feed coal of described feed coal supply step supply and the binding agent and firming agent by described binding agent and firming agent supply step supply；
First moulded coal manufacturing step, is shaped manufacturing moulded coal to the Mixture Density Networks mixing described feed coal and binding agent and firming agent in described blend step；
Particle filter step, the powder moulded coal below the moulded coal filtering out more than standard particle size the moulded coal manufactured by described first moulded coal manufacturing step and standard particle size；And
Second moulded coal manufacturing step, receives after the powder moulded coal that described particle filter step filters out, is shaped manufacturing moulded coal to powder moulded coal.
Described method can include moulded coal storing step, is arranged between described first moulded coal manufacturing step and described particle filter step, to be stored in the moulded coal manufactured by described first moulded coal manufacturing step, and is fed to described particle filter step.
Described method can include moisture and add step, is arranged between described particle filter step and described second moulded coal manufacturing step, to add moisture to described powder moulded coal so that the moisture of the powder moulded coal filtered out in described particle filter step can be adjusted to that suitable moisture.
The feed coal accounting for 90% that granularity is below 5mm can be fed to described blend step by described feed coal supply step.
Described binding agent can be more than one binding agents in the binding agents such as bitumen (bitumen), starch, molasses, waterglass, artificial asphalt (pitch), macromolecule resin.
Described firming agent can be more than one the firming agent in Calx, slaked lime, limestone, calcium carbonate, cement, bentonite, clay, Silicon stone, silicate, dolomite, phosphoric acid, sulphuric acid and oxide.
Moulded coal more than the standard particle size that described particle filter step filters out can load melting gasification furnace.
Described moulded coal storing step can be fed at the moulded coal manufactured by described second moulded coal manufacturing step.
The granularity of described powder moulded coal be more than 3mm account for more than 20%, particle mean size can be 1mm～30mm.
The density of described powder moulded coal can be 0.9g/cm3～1.6g/cm3。
Described powder moulded coal adds step from described moisture and receives moisture, suitable moisture can be adjusted to 3%～10%.
Additionally, according to the present invention one exemplary, it is possible to provide a kind of equipment manufacturing moulded coal, including:
Feed coal warehouse, for storing the feed coal of the granularity with a certain size；
Binding agent feeding mechanism, for supplying the binding agent being mixed in described feed coal；
Firming agent feeding mechanism, for supplying the firming agent being mixed in described feed coal；
Mixing arrangement, is used for the feed coal by described feed coal warehouse supply and the binding agent by described binding agent feeding mechanism supply and is mixed by the firming agent of described firming agent feeding mechanism supply；
First forming machine, for being shaped manufacturing moulded coal to by the Mixture Density Networks of described mixing arrangement mixed material coal and binding agent and firming agent；
Granularity sieving machine, is used for filtering out the powder moulded coal of below the moulded coal of more than standard particle size and standard particle size from the moulded coal made by described first forming machine；And
Second forming machine, for being shaped manufacturing moulded coal to the powder moulded coal filtered out by described granularity sieving machine.
Described equipment can include moulded coal warehouse, is arranged between described first forming machine and described granularity sieving machine, for storing the moulded coal manufactured by described first forming machine, and is fed to described granularity sieving machine.
Described equipment can include moisture adding apparatus, is arranged between described granularity sieving machine and described second forming machine, for adding moisture to described powder moulded coal so that the moisture of the powder moulded coal that described granularity sieving machine filters out can be adjusted to that suitable moisture.
Described feed coal warehouse can store granularity be below 5mm account for 90% feed coal.
Described binding agent can be more than one the binding agent in the binding agents such as bitumen, starch, molasses, waterglass, artificial asphalt, macromolecule resin.
Described firming agent can be more than one the firming agent in Calx, slaked lime, limestone, calcium carbonate, cement, bentonite, clay, Silicon stone, silicate, dolomite, phosphoric acid, sulphuric acid and oxide.
The moulded coal more than standard particle size filtered out by described granularity sieving machine can load melting gasification furnace.
Described moulded coal warehouse can be fed to by the moulded coal of described second forming machine manufacture.
The granularity of described powder moulded coal be more than 3mm account for more than 20%, particle mean size can be 1mm～30mm.
The density of described powder moulded coal can be 0.9g/cm3～1.6g/cm3。
Described powder moulded coal receives moisture from described moisture adding apparatus, suitable moisture can be adjusted to 3%～10%.
Advantageous effects
Manufacture the powder moulded coal produced in storage process after moulded coal need conveying equipment to re-use, and in accordance with an exemplary embodiment of the invention, it is possible to reduce run and safeguard the financial burden of these equipment, equipment may finally be simplified, such that it is able to reduce investment cost.
In addition, do not mix use with feed coal due to powder moulded coal, the granularity of powder moulded coal can be reduced and briquet quality deviation that moisture deviation causes, and the local straight forming production moulded coal of melting gasification furnace can be loaded at generation powder moulded coal simultaneously, therefore hourly output increases, and can improve moulded coal manufacturing process whole efficiency.
Accompanying drawing explanation
Fig. 1 is the figure illustrating the moulded coal apparent density change according to comprcssive strength.
Fig. 2 is the schematic diagram of the moulded coal manufacture method of the present invention one exemplary.
Fig. 3 is the schematic diagram of the moulded coal manufacture equipment of the present invention one exemplary.
Detailed description of the invention
Below, the exemplary that present invention will be described in detail with reference to the accompanying, so that those skilled in the art can easily implement the present invention.Those skilled in the art's reason should be understood that on the basis without departing from idea of the invention and scope, the various different modes deformation implementation of exemplary as herein described.Adopt identical accompanying drawing labelling to represent same or analogous part in the accompanying drawings as far as possible.
Term as used herein is simply for the purpose describing specific embodiment, and is not intended to the restriction present invention.Unless separately provided substantially contrary implication in context, otherwise singulative used herein is also intended to include plural form.It should also be understood that, term " includes " and " comprising " is not refer specifically to some characteristic, field, integer, step, action, key element and/or composition, and gets rid of the existence of other characteristics, field, integer, step, action, key element, composition and/or group or additional.
It is equivalent in meaning that the implication that all terms used herein (include technical term and scientific terminology) and those skilled in the art are generally understood that.For there being the term of definition inside dictionary, it should be interpreted as having the meaning consistent with correlation technique document and content disclosed herein, and should not explain their meaning with idealization or excessively formal implication.
(technical problem of the present invention solves principle)
In moulded coal manufacturing process produce powder moulded coal substantially by the ropy moulded coal produced at briquetting process initial period, molding time produce moulded coal outside non-forming area produce powder moulded coal and conveying during generation broken moulded coal form.Manufacturing the ratio produced after moulded coal and be about more than 80%, therefore the moisture of powder moulded coal is about 1%～10%, granularity be more than 3mm account for 20%, particle mean size is about 1mm～30mm.The density of powder moulded coal is 1.0g/cm3～1.6g/cm3It is relatively lower than normal moulded coal, but is relatively higher than the feed coal before molding.When powder moulded coal is made directly molding, owing to molding instability causes briquet quality to reduce, thus usability aspect existing problems.In order to powder moulded coal being made directly molding and guaranteeing cold strength, it is possible to be made directly molding after being adjusted to suitable moisture, thus can ensure that quality.Because powder moulded coal is in high-density state through first time moulding process, and reshaping density will increase relative to existing moulded coal, it is possible to guarantee quality.
Fig. 1 is the figure illustrating the moulded coal apparent density change according to comprcssive strength.The comprcssive strength of moulded coal can be subject to the very big impact of density, and when using identical binding agent and firming agent, density more increases, and comprcssive strength more increases.
The powder moulded coal produced in storage process after moulded coal manufacturing process is adjusted to suitable moisture by the method according to the invention, it is made directly molding again to manufacture moulded coal, use raising moulded coal production capacity, simplify powder moulded coal and re-use technique, and then improve moulded coal manufacturing process efficiency.
Fig. 2 is the schematic diagram of the moulded coal manufacture method of the present invention one exemplary.
With reference to Fig. 2, the method manufacturing moulded coal of the present invention one exemplary comprises the steps that
Feed coal supply step S10, supply has the feed coal of a certain size granularity；
Binding agent and firming agent supply step S20, supply is mixed into the binding agent in described feed coal and firming agent；
Blend step S30, mixes the feed coal being supplied step S10 supply by described feed coal and binding agent and the firming agent supplied by described binding agent and firming agent supply step S20；
First moulded coal manufacturing step S40, is shaped manufacturing moulded coal to the Mixture Density Networks mixing described feed coal and binding agent and firming agent in described blend step S30；
Particle filter step S60, the powder moulded coal below the moulded coal filtering out more than standard particle size the moulded coal manufactured by described first moulded coal manufacturing step S40 and standard particle size；And
Second moulded coal manufacturing step S80, receives after the described particle filter step S60 powder moulded coal filtered out, is shaped manufacturing moulded coal to powder moulded coal.
Described method can include moulded coal storing step S50, is arranged between described first moulded coal manufacturing step S40 and described particle filter step S60, to be stored in the moulded coal manufactured by described first moulded coal manufacturing step S40, and is fed to described particle filter step S60.
Described method can include moisture and add step S70, it is arranged between described particle filter step S60 and described second moulded coal manufacturing step S80, to add moisture to described powder moulded coal so that the moisture at the described particle filter step S60 powder moulded coal filtered out can be adjusted to that suitable moisture.
The feed coal accounting for 90% that granularity is below 5mm can be fed to described blend step S40 by described feed coal supply step S10.
Described binding agent can be more than one the binding agent in the binding agents such as bitumen, starch, molasses, waterglass, artificial asphalt, macromolecule resin.
Described firming agent can be more than one the firming agent in Calx, slaked lime, limestone, calcium carbonate, cement, bentonite, clay, Silicon stone, silicate, dolomite, phosphoric acid, sulphuric acid and oxide.
Step S20 is supplied at described binding agent and firming agent, can to the binding agent of described blend step S30 rationing 1wt%～15wt% and rationing firming agent.
Mixture Density Networks at described blend step S30 mixed material coal and binding agent, firming agent is fed to described first moulded coal manufacturing step S40, and at described first moulded coal manufacturing step S40, described Mixture Density Networks is shaped and manufactures moulded coal.Moulded coal storing step S50 can be fed at the moulded coal manufactured by described first moulded coal manufacturing step S40 to be stored.
Moulded coal more than the described particle filter step S60 standard particle size filtered out can load melting gasification furnace 10.The standard particle size that can load the moulded coal of melting gasification furnace can be 5mm～50mm.
Described moulded coal storing step S50 can be fed at the moulded coal manufactured by described second moulded coal manufacturing step S80.
It addition, the moisture of described powder moulded coal is 1%～10%, granularity be more than 3mm account for more than 20%, particle mean size can be 1mm～30mm.The density of described powder moulded coal can be 0.9g/cm3～1.6g/cm3.Described powder moulded coal is added step S70 by described moisture and receives moisture, suitable moisture can be adjusted to 3%～10%.
Fig. 3 is the schematic diagram of the moulded coal manufacture equipment of the present invention one exemplary.
With reference to Fig. 3, the equipment manufacturing moulded coal of the present invention one exemplary, it may include:
Feed coal warehouse 1, for storing the feed coal of the granularity with a certain size；
Binding agent feeding mechanism 2, for supplying the binding agent being mixed in described feed coal；
Firming agent feeding mechanism 3, for supplying the firming agent being mixed in described feed coal；
Mixing arrangement 4, is used for the feed coal by described feed coal warehouse supply and the binding agent by described binding agent feeding mechanism supply and is mixed by the firming agent of described firming agent feeding mechanism supply；
First forming machine 5, for being shaped manufacturing moulded coal to by the Mixture Density Networks of described mixing arrangement mixed material coal and binding agent and firming agent；
Granularity sieving machine 7, is used for filtering out the powder moulded coal of below the moulded coal of more than standard particle size and standard particle size from the moulded coal made by described first forming machine；And
Second forming machine 9, for being shaped manufacturing moulded coal to the powder moulded coal filtered out by described granularity sieving machine 7.
Described equipment can include moulded coal warehouse 6, is arranged between described first forming machine 5 and described granularity sieving machine 7, for storing the moulded coal manufactured by described first forming machine 5, and is fed to described granularity sieving machine 7.
And, described equipment can include moisture adding apparatus 8, is arranged between described granularity sieving machine 7 and described second forming machine 9, for adding moisture to described powder moulded coal so that the moisture of the powder moulded coal that described granularity sieving machine sieve 7 is selected can be adjusted to that suitable moisture.
Described feed coal warehouse 1 can store granularity be below 5mm account for 90% feed coal.
Described binding agent can be more than one the binding agent in the binding agents such as bitumen, starch, molasses, waterglass, artificial asphalt, macromolecule resin.
Described binding agent feeding mechanism 2 can to the described binding agent of described mixing arrangement 4 rationing 1%wt～15wt%.
Described firming agent can be more than one the firming agent in Calx, slaked lime, limestone, calcium carbonate, cement, bentonite, clay, Silicon stone, silicate, dolomite, phosphoric acid, sulphuric acid and oxide.
Described firming agent feeding mechanism 3 can to firming agent described in described mixing arrangement 4 rationing.
The Mixture Density Networks of mixed material coal and binding agent, firming agent is fed to the first forming machine 5, and described Mixture Density Networks is shaped and manufactures moulded coal by described first forming machine 5.The moulded coal manufactured by described first forming machine 5 can be stored in moulded coal warehouse 6.
The moulded coal more than standard particle size filtered out by described granularity sieving machine 7 can load melting gasification furnace 10.
Described second forming machine 9 is connected with described moulded coal warehouse 6, described second forming machine 9 moulded coal manufactured can be fed to described moulded coal warehouse 6.
In addition, in the moulded coal produced by the first forming machine 5, ropy moulded coal or during described moulded coal warehouse 6 is carried powder moulded coal below the standard particle size that produces because of the set down weight in shock of a fall and warehouse, its generation amount can account for the 5%～20% of the moulded coal total amount produced by the first forming machine 5.
The moisture of powder moulded coal is 1%～10%, granularity be more than 3mm account for more than 20%, particle mean size can be 1mm～30mm.The density of powder moulded coal can be 0.9g/cm3～1.6g/cm3.Powder moulded coal receives moisture from described moisture adding apparatus 8, suitable moisture can be adjusted to 3%～10%.The moulded coal manufactured in the second forming machine 9 that the controlled powder moulded coal of suitable moisture is shaped, its intensity can be 95%～150% relative to existing common moulded coal.The production capacity of the second forming machine 9 that powder moulded coal is shaped can be 5%～30% relative to the production capacity of the second forming machine 5.
Below, illustrate that the moulded coal of the present invention one exemplary manufactures the operation of equipment with reference to Fig. 3.
Mixing arrangement 4 receives feed coal from the feed coal warehouse 1 being used for storing the feed coal accounting for 90% that granularity is below 5mm, also receive selected from bitumen from described binding agent feeding mechanism 2, starch, molasses, waterglass, artificial asphalt, more than one binding agent 1wt%～15wt% in the binding agents such as macromolecule resin, quantitatively receive from described firming agent feeding mechanism 3 selected from Calx, slaked lime, limestone, calcium carbonate, cement, bentonite, clay, Silicon stone, silicate, dolomite, phosphoric acid, more than one firming agent in sulphuric acid and oxide, again by feed coal and binding agent, firming agent mixes.
Mixture Density Networks at described mixing arrangement 4 mixed material coal and binding agent, firming agent is fed to the first forming machine 5, and described first forming machine 5 manufactures moulded coal with Mixture Density Networks.
The moulded coal manufactured by described first forming machine 5 is stored into moulded coal warehouse 6, before loading melting gasification furnace 10, filtered out the moulded coal of more than standard particle size by granularity sieving machine 7 and load melting gasification furnace 10, and the powder moulded coal below standard particle size receives moisture from moisture adding apparatus 8, it is adjusted to after there is suitable moisture and is fed to the second forming machine 9, described second forming machine 9 powder moulded coal manufactures moulded coal, described second forming machine 9 moulded coal manufactured is fed to moulded coal warehouse 6.
Below, by experiment example the present invention is described in detail.
(experimental example)
Manufactured common moulded coal and manufactured moulded coal separately according to the powder moulded coal characteristic produced in actual moulded coal manufacturing process, powder moulded coal the moulded coal manufactured is to adopt identical moulded coal manufacture method to manufacture as raw material powder moulded coal.
Now, the particle mean size of powder moulded coal is adjusted to 4mm, and moisture is adjusted to 6wt%, 8wt%, 10wt% respectively.In order to assess the cold strength of manufactured moulded coal, measure comprcssive strength.
[table 1]
As shown in table 1, in experimental example 1, under the state that powder moulded coal granularity is identical, having manufactured moulded coal after moisture is adjusted to 6%, its result is increased to 66.5kgf relative to common moulded coal comprcssive strength by 58.8kgf.
And, such as experimental example 2, it being adjusted to after 8% by moisture to manufacture the result of moulded coal, its comprcssive strength increases severely as 92.2kgf.
Such as experimental example 3, being adjusted to after 10% by moisture to manufacture the result of moulded coal, its comprcssive strength is that 45.6kgf slightly reduces relative to common moulded coal, but usability aspect does not have too big problem.
Symbol description
1. feed coal warehouse 2. binding agent feeding mechanism
3. firming agent feeding mechanism 4. mixing arrangement
5. the first forming machine 6. moulded coal warehouse
7. granularity sieving machine 8. moisture adding apparatus
9. the second forming machine 10. melting gasification furnace
Claims (22)
1. the method manufacturing moulded coal, including:
Feed coal supply step, supply has the feed coal of a certain size granularity；
Binding agent and firming agent supply step, supply is mixed into the binding agent in described feed coal and firming agent；
Blend step, will be mixed by the feed coal of described feed coal supply step supply and the binding agent and firming agent by described binding agent and firming agent supply step supply；
First moulded coal manufacturing step, is shaped manufacturing moulded coal to the Mixture Density Networks mixing described feed coal and binding agent and firming agent in described blend step；
Particle filter step, the powder moulded coal below the moulded coal filtering out more than standard particle size the moulded coal manufactured by described first moulded coal manufacturing step and standard particle size；And
Second moulded coal manufacturing step, receives after the powder moulded coal that described particle filter step filters out, is shaped manufacturing moulded coal to powder moulded coal.
2. method according to claim 1, including:
Moulded coal storing step, is arranged between described first moulded coal manufacturing step and described particle filter step, for being stored in the moulded coal manufactured by described first moulded coal manufacturing step, and is fed to described particle filter step.
3. method according to claim 1 and 2, including:
Moisture adds step, is arranged between described particle filter step and described second moulded coal manufacturing step, to add moisture to described powder moulded coal so that the moisture of the powder moulded coal filtered out in described particle filter step can be adjusted to that suitable moisture.
4. method according to claim 3, wherein,
The feed coal accounting for 90% that granularity is below 5mm is fed to described blend step by described feed coal supply step.
5. method according to claim 4, wherein,
Described binding agent is more than one binding agents in the binding agents such as bitumen, starch, molasses, waterglass, artificial asphalt, macromolecule resin.
6. method according to claim 5, wherein,
Described firming agent is more than one the firming agent in Calx, slaked lime, limestone, calcium carbonate, cement, bentonite, clay, Silicon stone, silicate, dolomite, phosphoric acid, sulphuric acid and oxide.
7. method according to claim 6, wherein,
Moulded coal more than the standard particle size that described particle filter step filters out loads melting gasification furnace.
8. method according to claim 3, wherein,
It is fed to described moulded coal storing step at the moulded coal manufactured by described second moulded coal manufacturing step.
9. method according to claim 4, wherein,
The granularity of described powder moulded coal be more than 3mm account for more than 20%, particle mean size is 1mm～30mm.
10. method according to claim 9, wherein,
The density of described powder moulded coal is 0.9g/cm3～1.6g/cm3。
11. method according to claim 10, wherein,
Described powder moulded coal adds step from described moisture and receives moisture, and suitable moisture is adjusted to 3%～10%.
12. manufacture an equipment for moulded coal, including:
Feed coal warehouse, for storing the feed coal of the granularity with a certain size；
Binding agent feeding mechanism, for supplying the binding agent being mixed in described feed coal；
Firming agent feeding mechanism, for supplying the firming agent being mixed in described feed coal；
Mixing arrangement, is used for the feed coal by described feed coal warehouse supply and the binding agent by described binding agent feeding mechanism supply and is mixed by the firming agent of described firming agent feeding mechanism supply；
First forming machine, for being shaped manufacturing moulded coal to by the Mixture Density Networks of described mixing arrangement mixed material coal and binding agent and firming agent；
Granularity sieving machine, is used for filtering out the powder moulded coal of below the moulded coal of more than standard particle size and standard particle size from the moulded coal made by described first forming machine；And
Second forming machine, for being shaped manufacturing moulded coal to the powder moulded coal filtered out by described granularity sieving machine.
13. equipment according to claim 12, including:
Moulded coal warehouse, is arranged between described first forming machine and described granularity sieving machine, for storing the moulded coal manufactured by described first forming machine, and is fed to described granularity sieving machine.
14. the equipment according to claim 12 or 13, including:
Moisture adding apparatus, is arranged between described granularity sieving machine and described second forming machine, for adding moisture to described powder moulded coal so that the moisture of the powder moulded coal that described granularity sieving machine filters out can be adjusted to that suitable moisture.
15. equipment according to claim 14, wherein,
In described feed coal warehouse store granularity be below 5mm account for 90% feed coal.
16. equipment according to claim 15, wherein,
Described binding agent is more than one the binding agent in the binding agents such as bitumen, starch, molasses, waterglass, artificial asphalt, macromolecule resin.
17. equipment according to claim 16, wherein,
Described firming agent is more than one the firming agent in Calx, slaked lime, limestone, calcium carbonate, cement, bentonite, clay, Silicon stone, silicate, dolomite, phosphoric acid, sulphuric acid and oxide.
18. equipment according to claim 17, wherein,
The moulded coal more than standard particle size filtered out by described granularity sieving machine loads melting gasification furnace.
19. equipment according to claim 14, wherein,
It is fed to described moulded coal warehouse by the moulded coal of described second forming machine manufacture.
20. equipment according to claim 15, wherein,
The granularity of described powder moulded coal be more than 3mm account for more than 20%, particle mean size is 1mm～30mm.
21. equipment according to claim 20, wherein,
The density of described powder moulded coal is 0.9g/cm3～1.6g/cm3。
22. equipment according to claim 21, wherein,
Described powder moulded coal receives moisture from described moisture adding apparatus, and suitable moisture is adjusted to 3%～10%.
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| CN110184102A (en) * | 2019-05-31 | 2019-08-30 | 安徽科达洁能股份有限公司 | A kind of production method of moulded coal |
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