CN104848212B - The method that a kind of solid sulphur controlled temperature combustion of gangue is utilized with lime-ash efficient coupling - Google Patents
The method that a kind of solid sulphur controlled temperature combustion of gangue is utilized with lime-ash efficient coupling Download PDFInfo
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- CN104848212B CN104848212B CN201510273842.9A CN201510273842A CN104848212B CN 104848212 B CN104848212 B CN 104848212B CN 201510273842 A CN201510273842 A CN 201510273842A CN 104848212 B CN104848212 B CN 104848212B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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Abstract
The method that the solid sulphur controlled temperature combustion of gangue of the present invention is utilized with lime-ash efficient coupling, belongs to solid waste resource recovery and utilizes technical field；A kind of gangue method that solid sulphur controlled temperature combustion is utilized with lime-ash efficient coupling is provided, the technology ensure that CFBB being capable of safe and stable, reliable operation, meet in the case where extensive coal storage is carried out, efficient, accurate, automatic coal blending is realized, while make use of flyash on a large scale；Comprise the following steps：The step of a, inferior fuel carry out sieving approach；The step of fuel after b, sieving approach carries out mixture；The step of c, the fuel of mixture carry out Based Intelligent Control and burn；The step of lime-ash carries out temperature control and cools down after d, burning；The step of e, the flyash of cooling carry out superfine grinding；Present invention is mainly applied in terms of CFBB controlled temperature combustion and lime-ash efficient utilization.
Description
Technical field
The method that a kind of solid sulphur controlled temperature combustion of gangue of the present invention is utilized with lime-ash efficient coupling, belongs to solid waste goods and materials
Source utilizes technical field.
Background technology
In prior art, the structure of CFBB coal feed system is as coal dust coal stove：Mainly by vapour
Colm near car transport outsourcing, is blended into part gangue, after simple process, buffering enters boiler controller system.Due to coal
Source is more miscellaneous, and ature of coal fluctuation is big, and caloric value stability is poor, and Jing often has super grain phenomenon, reduces boiler efficiency, is unfavorable for power plant just
Often, steady production.
Some Enterprises are that external fire coal is sent to Coal Stack Yard, then are then led to again carrying out coal piling and coal blending with multiple stage loading machine
Cross the stokehold coal bunker that fire coal is transported to belt feeder boiler.Before raw coal enters storage coal canopy, no separating measure, the sieve of raw coal
Point, breaker, be arranged on storage coal canopy and stokehold finished product coal bunker between induction system in.In this coal-fired preparation system,
The screening of raw coal, breaker can not ensure that the at the uniform velocity continuous of fire coal is supplied.
The CFBB in minority power station mixes burned coal gangue fuel, and which prepares crushing system and only arranges one-level or two-stage
Ring hammer type coarse crushing crusher machine, some factories are even without two grades of fine crushers of setting.Due to being not added with screening plant, and crushing steps
Not enough, this causes granularity uneven, crosses grain, and it is serious to cross Fragmentation Phenomena, machine utilization increase, high energy consumption, and it is unbroken completely
Lump coal, can also make coal breaker that chute blockage failure also occurs, and be a big potential risk of the continuous safe operation of generating set, and will make
Entered in bed in a large number into large coal particles.As-fired coal can not meet the requirement of CFBB mostly, just have influence on boiler
Often run.The coal-fired technique using the broken four roads screening of two-stage of CFBB in indivedual power stations prepares coal-fired, the technique
Relatively reduce machine utilization, it is to avoid large coal particles enter boiler in a large number.But its percentage of damage to raw material is low, small scale is difficult
To meet extensive coal supply.
At present, coal blending is generally all manually or machinery is estimated coal blending by material quantity, and this mode coal piling work is strong
Degree is big, the poor working environment of workman, but coal blending effect is not fine, it is difficult to ensure that the dispensing quality of fire coal.And any point
Failure makes wherein one belt stop transport, and can all cause the coal supply of boiler nervous, affect the normal operation of boiler；Stockyard material extracting operation
Equipment typically adopts bucket wheel reclaimer or combination bucket-wheel stacker reclaimer, and during mixture coal operation, two reclaimer devices are worked simultaneously, by
In by dump landslide and two machine integrations of operation are asynchronous etc. that factor is affected, the more difficult control of chlorine adding ratio, coal blending accuracy are poor.It is a kind of
Mixture coal control system and method based on silo（CN 102756925）, the pre- of every kind of coal product is calculated according to predetermined coal product ratio
If feeding coal；Control according to the unit interval load of batcher of the default feeding coal of calculating by the plurality of silo of adjustment
The discharging of the plurality of silo is made, to obtain the mixture coal that mixed ratio is predetermined coal product ratio.It realizes efficiently, accurately, automatically
Change coal blending.But it, for fat coal, and is many cylinder devices that the equipment is, the high cost of system, fixed investment are big, are not suitable for poor quality
Coal measures system is used.
With colm raw material worse and worse, mix cash material bulk and hard rock is more, existing raw material processing system only has one-level
Coarse crushing, the equipment pressure of causing are too big, frequently occur failure, and operating efficiency is low, high energy consumption, load machine operation frequently, deposit safely
In hidden danger, and in handling failure, the system is unable to feeding, causes coal yard material nervous, have impact on the operation peace of unit
Entirely.Therefore, it is necessary to be improved to the deficiency in the presence of prior art.
The content of the invention
In the presence of overcoming the shortcomings of prior art, there is provided a kind of solid sulphur controlled temperature combustion of gangue and the efficient coupling of lime-ash
The method that utilizes of conjunction, the production line ensure that CFBB can safe and stable, reliable operation, satisfaction carrying out
In the case of extensive coal storage, efficient, accurate, automatic coal blending is realized.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：
A kind of production line of circulating fluid bed boiler inferior fuel, comprises the following steps：
The step of a, inferior fuel carry out sieving approach；
The step of fuel after b, sieving approach carries out mixture；
The step of c, the fuel of mixture carry out Based Intelligent Control and burn；
The step of lime-ash carries out temperature control and cools down after d, burning；
The step of e, the flyash of cooling carry out superfine grinding.
The a steps are specially：
Coarse crushing is carried out to fuel：Fuel enters tilting automatic material distributing device, and oversize Jing jaw crushers enter belt
Machine, screenings Jing oscillating feeders enter belt feeder；
The above-mentioned coarse crushing for carrying out, it is ensured that feeding granularity≤300mm, saves loading machine and aids in clear double-edged fine-toothed comb, and size block point
Walking material is not entered, fritter is directly entered belt feeder, and bulk enters newly-increased disintegrating apparatus；Using modified jaw crusher, it is ensured that
Major diameter material is directly broken to below 300mm, is adapted to the requirement of two grades of coarse breaking machines, and is adapted to high rigidity material, wearability
By force, the parts replacement cycle is long.
Two-stage crushing is carried out to fuel：Fuel enters circular vibrating screen extension set, and oversize is handled and picks up belt feeder and enter two-stage crushing
Machine；
Above-mentioned second-time breakage, to granularity 0～300mm coal charges, carries out sieving will not occurring for guarantee granularity≤50mm
It is broken, carry out artificial hand and pick up cash avoiding the pure spoil of a large amount of bulks from entering crushing system, increase energy consumption, damage equipment.
Above-mentioned secondary breaker；For a kind of disintegrating machine of discaling roll, its discaling roll is that its structure is double made by wear-resistant material
Keyway, tooth cap and the rod-toothed crusher of the broken main wheel of the multi-stage serial connection sleeve type that tooth set integrally combines, improve transmission force intensity,
Avoid producing in the case of high rigidity is difficult broken cannot normal operating, the breaking strength of the disintegrating machine is high, and disposal ability is big, uses
Life-span length, the cost of overhaul are low, it is to avoid super grain occur and cross crushing phenomenon significantly reducing during material is broken, improve work and imitate
Rate.
Fuel is carried out in small, broken bits：Above-mentioned circular vibrating screen extension set screenings Jing fine crushers a enters transporting something containerized belt feeder, above-mentioned fuel Jing
Fuel after intermediate crusher screenings respectively again Jing after fine crusher b and cylinder round sifter enters transporting something containerized belt feeder.
Above-mentioned technique carries out crushing performance test according to fuel characteristic and boiler demand, it is ensured that fuel crushing curve meets pot
Stove is required.Occur that crushing occurred in breakable fuel and granularity occurs in the hard material such as gangue using process avoids
Underproof phenomenon.Also the pure spoil of no calorific value is eliminated, its mill to circulating fluid-bed is reduced through broken simultaneously
Damage, increased the stability of operation.
The step of fuel to after sieving approach carries out mixture is specially：
First time mixture：Fuel after sieving approach and other fuel or combustion adjuvant are added into the blanking tower of umbrella shape mixture tower
Inside mixed, the blanking tower is cylinder, its surrounding is staggeredly provided with coal dropping port in differing heights；
Second mixture：The blanking tower of above-mentioned umbrella shape mixture tower is located at the centre of closed type coal storing cabin, mixed in blanking tower
Close fuel Jing coal dropping port overflows and enter closed type coal storing cabin, complete mixing；
Third time mixture：The bottom that there is coal outlet, the closed type coal storing cabin lower end of above-mentioned closed type coal storing cabin is arranged
There is a vibration coal feeder, Jing coal outlets fall into the mixture coal belt of vibration coal feeder and complete to mix again fuel successively；
4th mixture：Fuel has different outlets fuel or sulphur-fixing agent before entering boiler on mixture coal belt is mixed again
Unification is same to enter boiler.
Above-mentioned four mixture processes are specially：The blanking tower of the umbrella shape batch mixing coal storage system for cylinder, its surrounding not
Coal dropping port is provided with high cross, after two kinds of different fuels carry out mixed once wherein, by overflow along tower body surrounding umbrella shape
Direction enters closed type coal storing cabin and forms taper dump, and fuel carries out secondary mixing in this process, in gravity and the work of inertia
With under, make varigrained fuel form certain distribution proportion；There are two discharge coals on the ground of closed new umbrella shape batch mixing coal store
Mouthful, often arranging under coal outlet has ten adjustable vibration feeders, and the motor of feeder is furnished with variable-frequency governor, vibration coal feeder and matches somebody with somebody
Mixed coal belt is put, with the movement of mixed coal belt, the fuel third time of vertical direction is mixed and fallen in belt by oscillating feeder
On, on mixed coal belt, the fuel of different outlets is in layer together entered with sulphur-fixing agent mixing when into stokehold coal feeder
In stove, the 4th mixing is completed.
The step of fuel to mixture carries out Based Intelligent Control is specially：
Each fuel and mixture situation are carried out to closed type coal storing cabin and other coal stores carries out real-time monitoring：According to predetermined coal
Product ratio calculates the default feeding coal of every kind of coal product, according to the default feeding coal for calculating, by adjusting the plurality of batcher
Unit interval load controlling in the coal store discharging of different atures of coal, is the mixed of predetermined coal product ratio to obtain mixed ratio
Coal blending, when the inventory for measuring is more than the default feeding coal, the load for controlling vibration coal feeder reduces；When the thing for measuring
When doses is less than the default feeding coal, the load increase of vibration coal feeder is controlled；
Coal property test is carried out to the fuel on mixture coal belt：Real-time monitoring is carried out to the fuel on mixture coal belt, is sentenced
Whether disconnected fuel value is up to standard, the height of sulfur content and fuel particle size, and vibration is adjusted using feed-back regulatory mechanism to coal
Machine ruuning situation.
Above-mentioned Based Intelligent Control is specially：According to monitoring situation on mixed coal belt on-line, the distribution feelings of fuel in coal store
Condition, realizes the control to fuel quantity and non-homogeneity coal proportioning by the rotating speed of adjustment vibration coal feeder, while also having ature of coal
By inspection, detection function, is judged whether coal blending quality is up to standard, feeder ruuning situation is adjusted using feed-back regulatory mechanism, realize
Ature of coal requirement up to standard, and avoid mixed process from producing a large amount of airborne dusts.
Combustion apparatus in the step c is circulating fluid-bed, and ignition temperature is 750 DEG C ~ 880 DEG C, it is optimum for 810 DEG C ~
880℃。
During above-mentioned CFBC, different purposes can be realized according to the composition of gangue, gangue includes
Carbon-contained organic matter and inorganic mineral, the carbon-contained organic matter carry out the heat of burning generation and can be used to be generated electricity, inorganic ore deposit
Thing is activated by the heat that carbon-contained organic matter burning is produced, and can realize different purposes according to the type of product after activation.
In the Step d cooling using geomantic omen drum slag cooling, wind and water combined cold slag one or two, temperature control exists
750 DEG C ~ 100 DEG C, outlet temperature is 100 DEG C.
In the step e, superfine grinding is using ball milling, air draught mill or power plant's superheated steam airflow milling.
Above-mentioned grinding particle diameter is according to aluminium content in raw material, purposes adjustment in 10 μm of corresponding particle diameter, scope specific surface area
10000 product, alumina content >=30% chemical utilization extract aluminum oxide, silica, alumina content≤30% building materialsization profit
With.
The step of also adding combustion adjuvant before the step of fuel to after sieving approach carries out mixture.
The step of addition combustion adjuvant, includes combustion adjuvant is sieved and crushed.
It is described that the step that combustion adjuvant is sieved and crushed is specially：Combustion adjuvant is added into tilting automatic feed dividing dress
Put, oversize Jing boulder crushers enter fine crusher, screenings is directly entered fine crusher, and Jing fine crushers combustion adjuvant out enters cylinder
Screening machine, arranges outside the percutaneous band machine of oversize of cylinder round sifter, and the percutaneous band machine of screenings enters umbrella shape mixture tower.
The present invention compared with prior art it is had the advantage that for：
Present invention uses level Four screening and tertiary crusher system, make use of tilting automatic feed dividing before coal charge process
Device, screens out the coal charge for not needing jaw crushing in a large number, also using screening and be used in combination with broken in coal charge grinding process,
Enable the conveying of fire coal to ensure at the uniform velocity continuous supply, can not only make the energy consumption of disintegrating machine reduce by 70%, but also completely eliminate
Chute blockage failure in coal-fired course of conveying, also having eradicated affects a big potential risk of the continuous safe operation of generating set；This
It is bright to realize Low investment, reduced and crushed, reduced investment power consumption and the cost of overhaul；The present invention coal breakage tower bottom opened up it is multiple fall
Coal mouth, by being controlled achievable coal blending to the charger under coal dropping port.
Above-mentioned coal blending and conveying device has further the advantage that by all kinds of means：
Coal piling and coal blending are carried out using combination bucket-wheel stacker reclaimer, it is ensured that the quality of coal blending, alleviate the work of workman
Intensity, improves the working environment of workman；The conveying by all kinds of means of fire coal is realized, coal handling system configuration is made more flexibly, conveniently,
So as to improve the protection of boiler fired coal supply, solve in prior art as any belt is stopped transport, can all make pot
The coal supply of stove is nervous, the technical problem for affecting boiler normally to produce.
By above-mentioned technical proposal, large-scale coal storage is carried out using silo, instead of prior art and taken using bucket wheel formula
Material machine or combination bucket-wheel stacker reclaimer carry out the mode of coal blending, the transmission of the belt feeder by being arranged on multiple discharging openings below silo
Direction arranges, and colm and combustion adjuvant is uniformly mixed, and the discharging of the batcher of each discharge outlet is controlled by control unit
Amount, efficiently, accurately, automatically to carry out coal blending.According to preferred embodiment, in the case of using belt conveyer scale, Ke Yijie
Close the feedback information of belt conveyer scale, the feeding coal of monitor in real time batcher such that it is able to preferably carry out mixture coal control, and run
Efficiency high, cost of investment be low and good energy-conserving effect.
, after airflow milling crushing, its meso-position radius is up to less than 10 μm, and particle size distribution is narrow for flyash.By air-flow
The ultra-fine grinding of mill, thick many empty vitreums are crushed, and the bonding of its glass particle is released from, and increases pearl shape particulate, improves
Surface characteristic, improves the grain effect and micro aggregate effect of solid sulfur ash.
The adhesion of thick vitreum especially porous and particle through ultra-fine grinding, is destroyed, vitreous surface is destroyed
Firm diaphragm, increases internal solvable SiO2, Al2O3 dissolution, specific surface area increase, reaction contact surface, and bioactive molecule increases
Plus, improve the chemical characteristic of flyash.
The innovative point of the present invention：By fine crusher arranged in series, can meet big using two little fine crusher cooperations of exerting oneself
Go out the preparation of fuel process that Force system conveying carrys out fuel；Crushed by level Four screening and three-level and solve crushing excessively and particle diameter for fuel
Excessive problem；It is arranged in juxtaposition by two rotary screens, reduces equipment investment and save field space.The present invention can be adapted to crush various coals
Material, applicability are very powerful；Coal-fired conveying can ensure at the uniform velocity continuous supply, completely eliminate the chute blockage in coal-fired course of conveying
Failure, also having eradicated affects a big potential risk of the continuous safe operation of generating set；By the multiple ingredients mouths in coal breakage tower bottom
Carry out fuel mixture.Technology that gangue recirculating fluidized bed controlled temperature combustion, temperature control are cooled down and flyash fine is coupled, realizes
Gangue thermal activation and mechanical force activating, make gangue extract the recovery rate of aluminium in aluminium polychloride technique more than 92%, by combustion
The control optimization of burning system, makes gangue stably feed, stably burns；Ignition temperature is stable at 810 ~ 880 DEG C, and synthesis desulfurating rate reaches
To more than 95%, gangue furnace entering volume accounts for the total fuel quantity of stove more than 85%.Superfined flyash is added to more than 60%, saves and takes up an area,
Reduce investment.
Description of the drawings
The specific embodiment of the present invention is described in further detail below by accompanying drawing.
Fig. 1 is the process chart of the present invention.
Specific embodiment
Example below combines accompanying drawing, and the invention will be further described.
Example below is a specific embodiment of the present invention, is not intended to limit the scope protected by the present invention.
As shown in figure 1, tilting automatic feeding device is provided with by coal yard, which includes：The mixed cash automatic feed dividing coal of tilting
1 jaw crushing of comb；2 oscillating feeders, 1 deduster.Carry out coarse crushing, it is ensured that feeding granularity≤300mm, save conveying
Mixture energy.
1 inferior fuel belt conveyor is set（Treating capacity Q=700t/h, 0～300mm of granularity）, 1 tramp iron separator（Place is right
Answer magnetic induction intensity >=150mT）, 1 circle is set and is shaken classifying screen（Sieve aperture 50mm, flow Q=700t/h, material size 0～
300mm）, 1 classifying screen deduster, 2 lump coal ribbon conveyers of setting（Handpicking belt）（Flow Q=150t/h, speed V=
0.34m/s）1 intermediate crusher is set（Rod-toothed crusher, material size≤a small amount of granularity 500mm of 300mm permissions, marker size≤
50mm, treating capacity Q=250t/h）The toothed roller type secondary breaker second layer arranges 2 fine crushers（Model：Reversible hammer type fine crusher
1820, material size≤50mm, marker size≤10mm treating capacities 400t/h, motor N=710kW/6000V）1 collection is set
Fortune belt feeder（Q=700t/h, 0～10mm of granularity）；1 drum-type screening machine；2 belt cleaners；1 is arranged outward belt feeder.
The outer inferior fuel for being provided with tilting automatic feeding device to receive to transport, tilting autofeed dress between broken
Iron double-edged fine-toothed comb is put, the supplied materials of its inclined sliding has carried out primary screening, and screenings grain graininess≤300mm, Jing chutes are reached
Described 2 oscillating feeder that lower floor is arranged, oversize are crushed into jaw crusher by chute.Give through vibration
The fuel granularity of material machine and jaw crusher is approximately less than 300mm, maximum to be less than 500mm, and the fuel for sieving and being broken exists
Transport in the presence of belt feeder between broken between broken.Travelling belt leading portion is provided with dust arrester carries out dedusting.
Tramp iron separator is installed at the top 400mm of the superiors' belt feeder head, granularity is less than the fuel of 300mm through removing
Ironware carries out second screening except falling into head chute after iron and reaching next layer of circular vibrating screen.On-the-sieve material（50 ~ 300mm of granularity）Jing
Before sieving, chute reaches the lump coal ribbon conveyer of lower floor（Handpicking belt）, screenings（Granularity≤50mm）Reach through the lower funnel of sieve
3rd fine crusher a.Lump coal ribbon conveyer（Handpicking belt）Supplied materials is equipped with two workmans to be carried out to the bulk spoil on belt
Third time is screened, and bulk spoil still entered picking slate chute, and the supplied materials by artificial selection（Granularity≤300mm）In belt
Head chute is delivered under machine effect, the second intermediate crusher is reached by head chute.Through the fuel of intermediate crusher（Granularity≤
50mm）By 2 fine crusher a of disintegrating machine discharge chute, b carries out in small, broken bits respectively, and fine granularity can reach below 10mm.Fine crusher
A, b discharge is reached respectively through chute transporting something containerized belt feeder and drum-type screening machine, directly passes through to slip through the material of fine crusher a
Groove reach transporting something containerized belt, and through fine crusher b particle then pass through chute arrival drum-type screening machine to can not be in small, broken bits stone
Block carries out the 4th screening, stone（Granularity 10mm ~ 300mm）Discharge outside outer row's belt feeder, and below granularity 10mm
Supplied materials reaches transporting something containerized belt through chute.Transporting something containerized belt feeder is by all fuel transports to coal breakage tower.
Secondary breaker, is transformed to the axle of former secondary breaker, has made double bond into by the single key slot of original rapid wear
Groove, improves transmission force intensity, it is to avoid produces operation in the case of high rigidity hardly possible is broken, meets use requirement.It is thick by former two grades
The tooth set of broken machine and tooth plate have carried out modernization overlay, eliminate original tooth set, eliminate original plate shape tooth, be changed to tooth cap
Type and the broken main wheel of the multi-stage serial connection sleeve type that tooth set integrally combines, and tested in material, it is finally reached and does not change
In the case of existing equipment size and shell, the effect of service life is normally used and is improved.
Before the sieve of system, the lower leakage of chute, sieve and fine crusher discharge chute are metal structure, and are provided with inner liner abrasive resistant steel plate.
During mixture, the coal conduit of new umbrella shape batch mixing coal storage system, which is located at the closed type coal storing cabin central authorities, coal
Material is flowed out from the coal breakage tower, and the closed type coal storing cabin is stored in stack.It receives the colm from four sieves, three broken system
Production line supplied materials, it is also possible to while receiving combustion-supporting fuel.The multistage batch mixing of the closed type coal storing cabin Jing, the coal charge of different coal product exist
Coal store distribution on ground is different, and they fall through into the motor oscillating feeder from the corresponding coal dropping port, and then fall into
Travelling belt reaches CFB boiler.
In intelligence control system, coal blending control system control unit controls the motor oscillating feeder.First, according to pre-
Determine the default feeding coal that coal product ratio calculates every kind of coal product, according to the default feeding coal for calculating, by adjusting the plurality of feed
The unit interval load of machine controlling in the coal store discharging of different atures of coal, to obtain mixed ratio as predetermined coal product ratio
Mixture coal.Described control unit is controlled when it is determined that being more than the default feeding coal by the inventory that the belt conveyer scale is measured
So that the load of the motor oscillating feeder corresponding to the belt conveyer scale reduces；When it is determined that the material measured by the belt conveyer scale
When amount is less than the default feeding coal, control causes the load increase of the batcher corresponding to the belt conveyer scale.Meanwhile, it is described
Coal Blending System is equipped with coal property test function, by inspection, the feeding coal of monitor in real time batcher judges whether coal blending calorific value is up to standard,
It is using feed-back regulatory mechanism come regulation motor vibration coal feeder ruuning situation such that it is able to preferably carry out mixture coal control, real
The requirement up to standard of existing ature of coal.
Above-mentioned mixture raw material burns in circulating fluid-bed, control charging air feed, makes ignition temperature at 750 DEG C ~ 880 DEG C, excellent
810 DEG C ~ 880 DEG C are selected, during above-mentioned CFBC, different purposes, gangue can be realized according to the composition of gangue
Include carbon-contained organic matter and inorganic mineral, the carbon-contained organic matter carries out the heat of burning generation and can be used to be generated electricity,
Inorganic mineral is activated by the heat that carbon-contained organic matter burning is produced, and can realize different using according to the type of product after activation
On the way.
In the Step d cooling using geomantic omen drum slag cooling, wind and water combined cold slag one or two, temperature control exists
750 DEG C ~ 100 DEG C, outlet temperature is 100 DEG C.Discharging Jing power plant superheated steam airflow milling grinding, adjusts in 10 μ of corresponding particle diameter
M, the product of scope specific surface area 10000, raw alumina content >=30% extract its yield of aluminium chloride up to 92%, aluminum oxide
Content≤30% building materialsization is utilized, and superfined flyash is in additions such as cement, coating up to more than 60%.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although
With reference to the foregoing embodiments the present invention has been described in detail, it will be understood by those within the art that；Which still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (6)
1. the method that a kind of solid sulphur controlled temperature combustion of gangue is utilized with lime-ash efficient coupling, it is characterised in that comprise the following steps：
The step of a, inferior fuel carry out sieving approach；
The a steps are specially：
Coarse crushing is carried out to fuel：Fuel enters tilting automatic material distributing device, and oversize Jing jaw crushers enter belt feeder, sieves
Lower thing Jing oscillating feeders enter belt feeder；
Two-stage crushing is carried out to fuel：Fuel enters circular vibrating screen extension set, and oversize is handled and picks up belt feeder and enter secondary breaker；
Fuel is carried out in small, broken bits：Above-mentioned circular vibrating screen extension set screenings Jing fine crushers a enters transporting something containerized belt feeder, broken in above-mentioned fuel Jing
Fuel after machine screenings respectively again Jing after fine crusher b and cylinder round sifter enters transporting something containerized belt feeder；
The step of fuel after b, sieving approach carries out mixture；
The b step is specially：
First time mixture：Fuel after sieving approach is added to enter in the blanking tower of umbrella shape mixture tower with other fuel or combustion adjuvant
Row mixing, the blanking tower are cylinder, and its surrounding is staggeredly provided with coal dropping port in differing heights；
Second mixture：The blanking tower of above-mentioned umbrella shape mixture tower is located at the centre of closed type coal storing cabin, the mixing combustion in blanking tower
Material Jing coal dropping port overflows enter closed type coal storing cabin, complete mixing；
Third time mixture：There is coal outlet the lower end of above-mentioned closed type coal storing cabin, and the bottom of the closed type coal storing cabin is provided with and shakes
Dynamic feeder, Jing coal outlets fall into the mixture coal belt of vibration coal feeder and complete to mix again fuel successively；
4th mixture：Fuel has different outlets fuel or sulphur-fixing agent before entering boiler on mixture coal belt mixes one again
It is same to enter boiler；
The step of c, the fuel of mixture carry out Based Intelligent Control and burn；
The step c is specially：
Each fuel and mixture situation are carried out to closed type coal storing cabin and other coal stores carries out real-time monitoring：According to predetermined coal product ratio
Example calculates the default feeding coal of every kind of coal product, according to the default feeding coal for calculating, by the unit interval for adjusting multiple batchers
Load controlling in the coal store discharging of different atures of coal, to obtain the mixture coal that mixed ratio is predetermined coal product ratio, when
When the inventory for measuring is more than the default feeding coal, the load for controlling vibration coal feeder reduces；When the inventory for measuring it is little
When the default feeding coal, the load increase of vibration coal feeder is controlled；
Coal property test is carried out to the fuel on mixture coal belt：Real-time monitoring is carried out to the fuel on mixture coal belt, combustion is judged
Expect calorific value whether up to standard, sulfur content height and fuel particle size, vibration coal feeder fortune is adjusted using feed-back regulatory mechanism
Market condition；
The step of lime-ash carries out temperature control and cools down after d, burning；
In the Step d cooling using geomantic omen drum slag cooling, wind and water combined cold slag one or two, temperature control 750 DEG C ~
100 DEG C, outlet temperature is 100 DEG C；
The step of e, the flyash of cooling carry out superfine grinding.
2. the method that a kind of solid sulphur controlled temperature combustion of gangue according to claim 1 is utilized with lime-ash efficient coupling, which is special
Levy and be：Combustion apparatus in the step c is circulating fluid-bed, and ignition temperature is 750 DEG C ~ 880 DEG C.
3. the method that a kind of solid sulphur controlled temperature combustion of gangue according to claim 1 is utilized with lime-ash efficient coupling, which is special
Levy and be：In the step e, superfine grinding is using ball milling, air draught mill or power plant's superheated steam airflow milling.
4. the method that a kind of solid sulphur controlled temperature combustion of gangue according to claim 1 is utilized with lime-ash efficient coupling, which is special
Levy and be：The step of also adding combustion adjuvant before the b step.
5. the method that a kind of solid sulphur controlled temperature combustion of gangue according to claim 4 is utilized with lime-ash efficient coupling, which is special
Levy and be, it is described addition combustion adjuvant the step of include combustion adjuvant is sieved and crushed.
6. the method that a kind of solid sulphur controlled temperature combustion of gangue according to claim 5 is utilized with lime-ash efficient coupling, which is special
Levy and be, it is described that the step that combustion adjuvant is sieved and crushed is specially：Combustion adjuvant is added into tilting automatic material distributing device,
Oversize Jing boulder crushers enter fine crusher, and screenings is directly entered fine crusher, and Jing fine crushers combustion adjuvant out enters rotary screen
Extension set, arranges outside the percutaneous band machine of oversize of cylinder round sifter, and the percutaneous band machine of screenings enters umbrella shape mixture tower.
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| CN113008017B (en) * | 2021-04-23 | 2023-12-26 | 徐州无废城市技术研究院有限公司 | Coal-fired power plant solid waste and wastewater cooperative treatment system and method |
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| FR2528543A1 (en) * | 1982-06-15 | 1983-12-16 | Fives Cail Babcock | METHOD OF COMBUSTION OF FLUIDIZED BED OF POOR FUELS, ESPECIALLY HOT OR BITUMINOUS SCHISTES, AND INSTALLATION FOR CARRYING OUT SAID METHOD |
| CN1996403A (en) * | 2006-12-28 | 2007-07-11 | 中国铝业股份有限公司 | Constant feeding control method for rotary kiln |
| CN101519614B (en) * | 2009-03-04 | 2012-10-17 | 中国化学工程股份有限公司 | Process for dryness, formation and further processing of water-enriched lignite |
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