CN106635220A - Specific system for improving strength of pyrolytic semi-coke molded pellet of lignite and application thereof - Google Patents
Specific system for improving strength of pyrolytic semi-coke molded pellet of lignite and application thereof Download PDFInfo
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- CN106635220A CN106635220A CN201611035464.1A CN201611035464A CN106635220A CN 106635220 A CN106635220 A CN 106635220A CN 201611035464 A CN201611035464 A CN 201611035464A CN 106635220 A CN106635220 A CN 106635220A
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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
- C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
- C10L5/28—Heating the shaped fuels, e.g. briquettes; Coking the 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
- C10L5/36—Shape
-
- 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
- C10L2290/02—Combustion or pyrolysis
-
- 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
- C10L2290/28—Cutting, disintegrating, shredding or grinding
-
- 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
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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)
- Coke Industry (AREA)
Abstract
The invention discloses a specific system for improving the strength of a pyrolytic semi-coke molded pellet of lignite and an application thereof. The specific system for improving the strength of a pyrolytic semi-coke molded pellet of lignite is disclosed for the first time and comprises a quick pyrolysis device, a grinding device, a blending device, a molding device and a sintering device. The invention further discloses a method for improving the strength of a pyrolytic semi-coke molded pellet of lignite by utilizing the specific system. The method comprises the following steps: (1) pyrolyzing lignite in the quick pyrolysis device to obtain semi-coke, grinding the semi-coke in the grinding device, and uniformly mixing with clay in the blending device to obtain a mixed material; (2) molding the mixed material in the molding device to obtain molded pellets; and (3) sintering the molded pellets in the sintering device, and cooling to obtain the product. According to the method, the pyrolytic semi-coke of lignite is mixed with clay and molded, and the molded pellets are sintered in a muffle furnace, so that the strength of the molded pellets can be reinforced. The specific system has a simple process route, low equipment investment and low process cost.
Description
Technical field
The present invention relates to a kind of improve the dedicated system that brown coal pyrolysis char is molded ball intensity, further relate to using described special
System improves the method that brown coal pyrolysis char is molded ball intensity.
Background technology
Semicoke is with the weak bonding or non-caking coal of high volatile as raw material, in Jing, in low temperature distillation charing removing coal
Product after tar material and most of volatile is high containing ash with its fixed carbon height, resistivity as a kind of novel carbon material
Part characteristic that low, sulfur content is low, phosphorus content is low and cheap price, it is just progressively expanded using many industries.
The semicoke product that brown coal are produced after upgrading, because fine granularity is more, and its density is little and relatively crisp, part
Bulky grain is also easily crushed, thus there is easy-weathering airborne dust, the difficulty such as pollution is big, cannot transport, and semicoke product has viscous inside it
The gelatinous layer of property is then isolated in pyrolytic process as leading products, therefore semicoke product its mouldability extreme difference, substantially do not have
Standby shaping characteristic.For the semicoke product after brown improving quality of coal by pyrolysis, mainly add some organic binder bonds and other additions
Agent is molded, and additive high cost and is changed a lot using semicoke characteristic after additive, is difficult later use, and part
Pyrolysis project then directly transports semicoke, dust pollution in its transport, banking process and its serious.
The A of Chinese patent application publication No. CN 103074139 discloses a kind of to rich in semicoke shaping after the pyrolysis of water brown coal
Method for upgrading, be mainly characterized in that：The first step, semicoke is mixed with dried brown coal：It is brown that water is will be enriched in first
Semicoke after pyrolysis of coal after upgrading is delivered to mixing homogenizing heating cabinet after homogenizing bin, while will be done by brown coal drying system
Brown coal after dry are also fed into mixing homogenizing heating cabinet；Second step, the inside toward mixing homogenizing heating cabinet is passed through steam, to semicoke
Heated while mixing with dry brown coal；3rd step, the compound after homogenized heating is entered on superelevation pressing machine
The heat tracing surge bunker of side, and subsequently enter superelevation pressing machine；4th step, compound send into superelevation pressing machine carry out high pressure into
Type, compound is sieved after the high pressure binder free extrusion molding of superelevation pressing machine by vibratory sieve, wherein sieving
Qualified product, as final products, by moulded coal induction system is cooled and solidified after follow-up cooling, passivation technology process
Be sent to moulded coal stockyard, and sieve underproof product then by revert system return in homogenizing bin with semicoke stockyard in semicoke
It is homogenizing, it is to be homogenised after with semicoke in the lump by semicoke induction system send into mix be homogenized heating cabinet in carry out again with drying
Brown coal afterwards are mixed, and wherein returning charge and former semicoke are mainly carried out preliminary homogenisation by homogenizing bin, by the material of homogenizing bin
Mixing homogenizing heating cabinet is transported to, in mixing homogenizing heating cabinet, then is mixed with the dried brown coal for newly entering,
Change, heat, be heated to entering subsequently continue after uniform temperature being molded.The technology has three below shortcoming：(1) firstly the need of by partly
Burnt product is heated after being blended with brown coal with steam, considerably increases the complexity of energy consumption and technology；(2) technology will mix
Good material is molded with high-pressure ball press, and high-pressure ball press equipment investment is big, high energy consumption；(3) the shaping ball of the technology by
Need to add water in technique, so finally needing drying, this undoubtedly increased equipment investment and moulding process cost.
The A of Chinese patent application publication No. CN 102766497 discloses a kind of shaped device of lignite semi-coke powder, its bag
Include：Feed bin, screw(-type) feeder, first order double-shaft stirring mixer, second level double-shaft stirring mixer, reactor, planetary type wheel
Mill and high-pressure ball press, wherein screw(-type) feeder are arranged under the feed bin of the lignite semi-coke powder for holding setting grain particles
Side, sends lignite semi-coke powder and the starchy binder for being proportional to inject into coupled first order Double shaft stirring mixing
Machine, reactor is arranged on first order double-shaft stirring mixer top, sprays into the water smoke containing the first setting ratio moisture and by reacting
Kettle liquid-containing binder of the injection containing the second setting ratio moisture is carried out being sent into after first order mixing and is connected to first order twin shaft
Second level double-shaft stirring mixer after stirring mixer；After second level double-shaft stirring mixer is to first order mixing
Lignite semi-coke powder carries out second level mixing；Planetary type wheel mill is double with the second level by inclination angle belt conveyor and electric three passes
Axle stirring mixer is connected, and the material after planetary type wheel mill is mixed to the second level entered by chute is rolled；In
Between surge bunker be connected with planetary type wheel mill by the first conveyer, material after rolling caching；High-pressure ball press passes through skin
Band conveyer is connected with intermediate buffering storehouse, and the material after belt conveyor will be rolled sends into high-pressure ball press, forms the ball of shaping
Group.The shortcoming of the technology is mainly complex process, and equipment is various, and only mixed material aspect has just carried out Multi-stage stirring, and
High-pressure ball press is used, the equipment investment of whole technology is high, causes economy bad.
Therefore, in the urgent need to developing a kind of new technology improving the intensity that brown coal pyrolysis char is molded ball so as to Neng Gouman
Sufficient prior art airborne dust is big, seriously polluted, the problems such as cannot transport.
The content of the invention
First technical problem to be solved by this invention is to provide a kind of raising brown coal pyrolysis char shaping ball intensity
Dedicated system.
Second technical problem to be solved by this invention is to provide a kind of using dedicated system raising brown coal pyrolysis
The method that semicoke is molded ball intensity.
To solve above-mentioned technical problem, the technical solution used in the present invention is：
The present invention discloses first the dedicated system that a kind of raising brown coal pyrolysis char is molded ball intensity, including：Fast speed heat
Solution device, the rapid pyrolysis apparatus are provided with the discharging opening of brown coal charging aperture and brown coal pyrolysis char；
Breaker, the breaker is provided with the discharging opening of semicoke charging aperture and broken rear semicoke；
Mixing device, the mixing device is provided with product discharge mouth after charging aperture and mixing；
Shaped device, the shaped device is provided with the discharging opening of pelletizing after the charging aperture of material to be formed and shaping；
Sintering equipment, the sintering equipment is provided with the discharging opening of pelletizing after the charging aperture of shaping pelletizing and sintering.
Wherein, the discharging opening of the rapid pyrolysis apparatus is connected with the semicoke charging aperture of the breaker；It is described broken
The discharging opening of device is connected with the charging aperture of the mixing device；After the mixing of the mixing device product discharge mouth with it is described into
The charging aperture of the material to be formed of type device is connected；The discharging opening of pelletizing and the sintering equipment after the shaping of the shaped device
Shaping pelletizing charging aperture be connected.
It is further preferred that the discharging opening of the rapid pyrolysis apparatus passes through the charging of heat-resisting pipeline and the breaker
Mouth is connected.
" connected " of the present invention can be fixedly connected, or be detachably connected；Can be mechanically connected, also may be used
Be electrical connection；Can be directly connected to, or be indirectly connected to by intermediary.
Mixing device of the present invention is batch mixer.
The shaped device is low pressure to roll-in mechanism of qi.Preferably to roll-in ball machine.
The sintering equipment is Muffle furnace.
Any batch mixer and to roll-in ball machine be applied to the present invention.
The present invention improves the dedicated system that brown coal pyrolysis char is molded ball intensity, and rapid pyrolysis apparatus is brown described in brown coal Jing
Coal charging aperture enters rapid pyrolysis apparatus, and brown coal are pyrolyzed in rapid pyrolysis apparatus and obtain semicoke；Breaker described in semicoke Jing
Semicoke charging aperture enter breaker, semicoke is crushed in breaker particle diameter≤2 millimeter；Semicoke after broken and glutinous
Respectively the charging aperture of mixing device enters mixing device to soil described in Jing, is well mixed in mixing device, obtains compound；Mixing
The charging aperture of the material to be formed of shaped device enters shaped device described in material Jing, compound is molded in shaped device and is obtained
Shaping ball；The charging aperture of the shaping pelletizing of sintering equipment described in shaping ball warp enters sintering equipment, by shaping ball in sintering equipment
In be sintered, then cool down, take out shaping ball.
The present invention further discloses a kind of improve the side that brown coal pyrolysis char is molded ball intensity using the dedicated system
Method, including：(1) brown coal are pyrolyzed in rapid pyrolysis apparatus and obtain semicoke, semicoke is filled after crushing in breaker in batch mixing
It is well mixed with clay in putting, obtains compound；(2) compound is molded in shaped device and obtains being molded ball；(3) will shaping
Ball is sintered in sintering equipment, cooling, obtains final product.
Wherein, the consumption of step (1) clay is the 3-10% of the semicoke quality after brown coal pyrolysis.Step (1) will be brown
Semicoke after pyrolysis of coal is crushed to particle diameter≤2 millimeter.The time of step (1) mixing is 3-6 minutes.
The pressure of step (2) shaping is 14～22MPa.The temperature of step (3) sintering is 900-1400 DEG C, is burnt
The time of knot is 30-60 minutes.
Brown coal pyrolysis char is different from other coals, and brown coal porosity itself is flourishing, the semicoke porosity meeting formed after pyrolysis
Further increase, and lignite semi-coke fragility height, plasticity are poor, therefore the semicoke traditional approach that brown coal pyrolysis is obtained is difficult into
Type, even if shaping, type ball intensity cannot also meet moulded coal industrial requirements.
The present invention is molded after the brown coal pyrolysis char powder by certain particle size uniformly mixes with a certain amount of clay
(for example, with traditional to roll-in ball machine), is then put into shaping ball in closed and nitrogen oxygen-free environment high temperature Muffle furnace,
It is sintered at a temperature of 900 DEG C -1400 DEG C, when clay is during heating, reaches uniform temperature (800 DEG C -900 DEG C)
Afterwards, when continuing to rise high-temperature, eutectic material starts fusing in clay, and liquid phase occurs and gradually increases, and is filled in solid particle
Between, due to the effect of liquid phase surface tension so that no cofusing particle is further drawn close, cause volume contraction drastically, the porosity
Decline, density is improved, and then increased the intensity of shaping ball.The present invention by such mode solve brown coal pyrolysis char into
Need to add water shaping and cause subsequent forming ball needs drying etc. in type hardly possible, complex forming technology, shaping high cost and technique
Problem.
The high-temperature heating of the medium-sized ball of the present invention is carried out in Muffle furnace, and the time of sintering is 30-60 minutes.
The time of sintering is less than 30 minutes, and sintering is insufficient, and eutectic material cannot fully melt and play a role in clay；
When reaching 60 minutes, sintering is fully completed sintering, but more than 60 minutes after, sintering no longer plays a role, and continues to extend and wastes
Heat.
The compression strength tested respectively before prepared shaping ball sintering and after sintering of the invention, before shaping ball sintering
Compression strength average out to 105-137N/ balls, the compression strength average out to 451-537N/ balls after sintering.
The brown coal that the present invention does not have limitation, all kinds to the brown coal are applied to the present invention；And all kinds
Clay be within the scope of the program of the present invention.
Technical solution of the present invention compared with prior art, has the advantages that：
The present invention only uses conventional, inexpensive inorganic substances as binding agent, such as clay.Additionally, binding agent plus
It is less to enter amount, therefore greatly reduces the cost of molding adhesive.Relative to other forming techniques, the present invention need not be straight
Connecing can just produce intensity and be molded ball well using forming machine.Present invention process route is simple, greatly reduces shaping
The number of devices of technique, reduces multistage mixing equipment, binding agent reactor and steam-heating apparatus etc., therefore saves
Equipment investment, reduces process costs.The present invention does not need high-pressure ball press to be molded, it is only necessary to using traditional low pressure
To roll-in ball machine, ball press equipment investment is reduced.The present invention is put into the low-intensity shaping ball after roller press briquetting
Sintering and then increase shaping ball intensity in Muffle furnace, the increase to be molded ball intensity provides a kind of brand-new thinking.
Description of the drawings
Fig. 1 is the system structure diagram that the present invention prepares formed coke using pyrolysis char；
Fig. 2 is the flow chart of the method that the present invention improves brown coal pyrolysis char shaping ball intensity using the dedicated system.
Specific embodiment
Further describe the present invention with reference to specific embodiment, advantages of the present invention and feature will be with description and
It is apparent.It should be understood that the embodiment is only exemplary, any restriction is not constituted to the scope of the present invention.This area
Technical staff should be understood that without departing from the spirit and scope of the invention can to the details of technical solution of the present invention and
Form is modified or is replaced, but these modifications or replacement each fall within protection scope of the present invention.
As shown in figure 1, the invention provides a kind of improve the dedicated system that brown coal pyrolysis chars is molded ball intensity, including：
Rapid pyrolysis apparatus 100, the rapid pyrolysis apparatus 100 are provided with the discharging of brown coal charging aperture and brown coal pyrolysis char
Mouthful；
Breaker 200, the breaker 200 is provided with the discharging opening of semicoke charging aperture and broken rear semicoke；
Mixing device 300, the mixing device 300 is provided with product discharge mouth after charging aperture and mixing；
Shaped device 400, the shaped device 400 is provided with the discharging of pelletizing after the charging aperture of material to be formed and shaping
Mouthful；
Sintering equipment 500, the sintering equipment 500 is provided with the discharging opening of pelletizing after the charging aperture of shaping pelletizing and sintering.
Wherein, the discharging opening of rapid pyrolysis apparatus 100 is connected with the semicoke charging aperture of breaker 200；Breaker 200
Discharging opening be connected with the charging aperture of mixing device 300；Product discharge mouth and shaped device 400 after the mixing of mixing device 300
Material to be formed charging aperture be connected；The shaping ball of the discharging opening of pelletizing and sintering equipment 500 after the shaping of shaped device 400
The charging aperture of group is connected.
It is further preferred that the discharging opening of rapid pyrolysis apparatus 100 is by heat-resisting pipeline and the charging aperture of breaker 200
It is connected.
" connected " of the present invention can be fixedly connected, or be detachably connected；Can be mechanically connected, also may be used
Be electrical connection；Can be directly connected to, or be indirectly connected to by intermediary.
Used as the specific embodiment of the present invention, mixing device 300 is batch mixer；Shaped device 400 is low pressure to roll-in
Mechanism of qi, preferably to roll-in ball machine；Sintering equipment 500 is Muffle furnace.Any batch mixer and to roll-in ball machine suitable for this
It is bright.
The present invention improves the dedicated system that brown coal pyrolysis chars is molded ball intensity, brown coal Jing rapid pyrolysis apparatus 100 it is brown
Coal charging aperture enters rapid pyrolysis apparatus 100, and brown coal are pyrolyzed in rapid pyrolysis apparatus 100 and obtain semicoke；The broken dresses of semicoke Jing
The semicoke charging aperture for putting 200 enters breaker 200, and semicoke is crushed into particle diameter≤2 millimeter in breaker 200；It is broken
Semicoke and the charging aperture of clay difference Jing mixing devices 300 afterwards enters mixing device 300, mixes equal in mixing device 300
It is even, obtain compound；The charging aperture of the material to be formed of compound Jing shaped devices 400 enters shaped device 400, by compound
The shaping in shaped device 400 obtains being molded ball；The charging aperture of the shaping pelletizing of shaping ball warp sintering equipment 500 enters sintering dress
500 are put, shaping ball is sintered in sintering equipment 500, then cooled down, take out shaping ball.
Embodiment 1
Brown coal pyrolysis char principal character：Be dried base fix carbon content 63.13%, moisture 7.54%, particle diameter 2mm and
Below；
Binding agent：Clay；
On the basis of semicoke, 1kg semi-coke powders are weighed, 30g clays mix semicoke using the vertical R02 batch mixers of being permitted of love with clay
3min is closed, compound is molded (to roll-in ball machine), the pressure of shaping is 14MPa, then shaping ball is put into Muffle furnace
In be sintered, 1100 DEG C of sintering temperature, sintering time 30 minutes.
The compression strength before shaping ball sintering and after sintering, the compression strength average out to being molded before ball sintering are tested respectively
105N/ balls, the compression strength average out to 451N/ balls after sintering.
Embodiment 2
Brown coal pyrolysis char principal character：Be dried base fix carbon content 63.13%, moisture 7.54%, particle diameter 2mm and
Below；
Binding agent：Clay；
On the basis of semicoke, 1kg semi-coke powders are weighed, 50g clays mix semicoke using the vertical R02 batch mixers of being permitted of love with clay
3min is closed, compound is molded (to roll-in ball machine), the pressure of shaping is 14MPa, then shaping ball is put into Muffle furnace
In be sintered, 1100 DEG C of sintering temperature, sintering time 40 minutes.
The compression strength before shaping ball sintering and after sintering, the compression strength average out to being molded before ball sintering are tested respectively
137N/ balls, the compression strength average out to 507N/ balls after sintering.
Embodiment 3
Brown coal pyrolysis char principal character：Be dried base fix carbon content 63.13%, moisture 7.54%, particle diameter 2mm and
Below；
Binding agent：Clay；
On the basis of semicoke, 1kg semi-coke powders are weighed, 50g clays mix semicoke using the vertical R02 batch mixers of being permitted of love with clay
3min is closed, compound is molded (to roll-in ball machine), the pressure of shaping is 14MPa, then shaping ball is put into Muffle furnace
In be sintered, 1300 DEG C of sintering temperature, sintering time 40 minutes.
The compression strength before shaping ball sintering and after sintering, the compression strength average out to being molded before ball sintering are tested respectively
137N/ balls, the compression strength average out to 534N/ balls after sintering.
Embodiment 4
Brown coal pyrolysis char principal character：Be dried base fix carbon content 63.13%, moisture 7.54%, particle diameter 2mm and
Below；
Binding agent：Clay；
On the basis of semicoke, 1kg semi-coke powders are weighed, 100g clays mix semicoke using the vertical R02 batch mixers of being permitted of love with clay
6min is closed, compound is molded (to roll-in ball machine), the pressure of shaping is 22MPa, then shaping ball is put into Muffle furnace
In be sintered, 1400 DEG C of sintering temperature, sintering time 30 minutes.
The compression strength before shaping ball sintering and after sintering, the compression strength average out to being molded before ball sintering are tested respectively
137N/ balls, the compression strength average out to 537N/ balls after sintering.
Embodiment 5
Brown coal pyrolysis char principal character：Be dried base fix carbon content 63.13%, moisture 7.54%, particle diameter 2mm and
Below；
Binding agent：Clay；
On the basis of semicoke, 1kg semi-coke powders are weighed, 50g clays mix semicoke using the vertical R02 batch mixers of being permitted of love with clay
5min is closed, compound is molded (to roll-in ball machine), the pressure of shaping is 20MPa, then shaping ball is put into Muffle furnace
In be sintered, 900 DEG C of sintering temperature, sintering time 60 minutes.
The compression strength before shaping ball sintering and after sintering, the compression strength average out to being molded before ball sintering are tested respectively
135N/ balls, the compression strength average out to 506N/ balls after sintering.
Claims (10)
1. it is a kind of to improve the dedicated system that brown coal pyrolysis char is molded ball intensity, it is characterised in that to include：
Rapid pyrolysis apparatus, the rapid pyrolysis apparatus are provided with the discharging opening of brown coal charging aperture and brown coal pyrolysis char；
Breaker, the breaker is provided with the discharging opening of semicoke charging aperture and broken rear semicoke；
Mixing device, the mixing device is provided with product discharge mouth after charging aperture and mixing；
Shaped device, the shaped device is provided with the discharging opening of pelletizing after the charging aperture of material to be formed and shaping；
Sintering equipment, the sintering equipment is provided with the discharging opening of pelletizing after the charging aperture of shaping pelletizing and sintering；
Wherein, the discharging opening of the rapid pyrolysis apparatus is connected with the semicoke charging aperture of the breaker；The breaker
Discharging opening be connected with the charging aperture of the mixing device；Product discharge mouth and the shaping dress after the mixing of the mixing device
The charging aperture of the material to be formed put is connected；After the shaping of the shaped device discharging opening of pelletizing and the sintering equipment into
The charging aperture of type pelletizing is connected.
2. according to the dedicated system described in claim 1, it is characterised in that：The discharging opening of the rapid pyrolysis apparatus is by heat-resisting
Pipeline is connected with the charging aperture of the breaker.
3. according to the dedicated system described in claim 1, it is characterised in that：The mixing device is batch mixer；The shaping dress
Low pressure is set to roll-in ball machine.
4. according to the dedicated system described in claim 1, it is characterised in that：The sintering equipment is Muffle furnace.
5. the method that brown coal pyrolysis char is molded ball intensity is improved using the dedicated system described in claim 1-4 any one,
Characterized in that, including：
(1) brown coal are pyrolyzed in rapid pyrolysis apparatus and obtain semicoke, after semicoke is broken in breaker in mixing device
It is well mixed with clay, obtains compound；(2) compound is molded in shaped device and obtains being molded ball；(3) shaping ball is existed
It is sintered in sintering equipment, cools down, obtains final product.
6. in accordance with the method for claim 5, it is characterised in that：The consumption of step (1) clay is after brown coal pyrolysis
The 3-10% of semicoke quality.
7. in accordance with the method for claim 5, it is characterised in that：Semicoke after step (1) is pyrolyzed in brown coal is crushed to particle diameter
≤ 2 millimeters.
8. in accordance with the method for claim 5, it is characterised in that：The time of step (1) mixing is 3-6 minutes.
9. in accordance with the method for claim 5, it is characterised in that：The pressure of step (2) shaping is 14～22MPa.
10. in accordance with the method for claim 5, it is characterised in that：The temperature of step (3) sintering is 900-1400 DEG C,
The time of sintering is 30-60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611035464.1A CN106635220A (en) | 2016-11-16 | 2016-11-16 | Specific system for improving strength of pyrolytic semi-coke molded pellet of lignite and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611035464.1A CN106635220A (en) | 2016-11-16 | 2016-11-16 | Specific system for improving strength of pyrolytic semi-coke molded pellet of lignite and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048119A (en) * | 2017-11-16 | 2018-05-18 | 北京神雾电力科技有限公司 | High temperature coke powder processing system and method under pyrolysis oven cyclone dust collectors |
| CN110358597A (en) * | 2019-06-26 | 2019-10-22 | 江苏凤谷节能科技有限公司 | A kind of the clean solid fuel preparation process and its system modified based on semi-coke |
-
2016
- 2016-11-16 CN CN201611035464.1A patent/CN106635220A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048119A (en) * | 2017-11-16 | 2018-05-18 | 北京神雾电力科技有限公司 | High temperature coke powder processing system and method under pyrolysis oven cyclone dust collectors |
| CN108048119B (en) * | 2017-11-16 | 2023-07-21 | 北京恒丰亚业科技发展有限公司 | System and method for treating high-temperature coke powder under cyclone dust collector of pyrolysis furnace |
| CN110358597A (en) * | 2019-06-26 | 2019-10-22 | 江苏凤谷节能科技有限公司 | A kind of the clean solid fuel preparation process and its system modified based on semi-coke |
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