CN106316167A - Production process of oil shale tailings powder suspension lime kiln - Google Patents
Production process of oil shale tailings powder suspension lime kiln Download PDFInfo
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- CN106316167A CN106316167A CN201610854065.1A CN201610854065A CN106316167A CN 106316167 A CN106316167 A CN 106316167A CN 201610854065 A CN201610854065 A CN 201610854065A CN 106316167 A CN106316167 A CN 106316167A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
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Abstract
The invention relates to a production process of an oil shale tailings powder suspension lime kiln. The oil shale tailings powder suspension lime kiln is characterized in that during production, two raw materials including coal powder and oil shale tailings powder are prepared; a kiln tail high-temperature fan is started to generate operation air flow through pipeline extraction and discharging; after the hot air flow in a pipeline completely operates, the oil shale tailings powder is fed into a feeding opening; the ascending mixed air flow of the mixed hot air flow is subjected to circulation gas-solid separation through five serially connected suspension coolers; lime solid particles are subjected to circulation gas-solid separation through three serially connected suspension coolers; when being cooled to the temperature below 100 DEG C, the lime solid particles enter a lime cabin through a baiting pipe; the waste gas temperature in the suspension preheater is gradually lowered to 300 DEG C to 350 DEG C; after the temperature lowering to 200 DEG C through a humidity increasing tower, solid particles in waste gas are sequentially subjected to sedimentation, kiln tail fan treatment and kiln tail chimney purification through a kiln tail dust collector, and the waste gas is exhausted; the lime powder separated out through the kiln tail dust collector is conveyed into the limb cabin through a pipeline.
Description
Technical field
The present invention relates to kiln transformation and fire the production technology of oil shale tailings, especially a kind of oil shale ground slag suspends
The production technology in limekiln.
Background technology
At present, oil shale is a kind of sedimentary rock containing oil, and reserves are the hugest, is converted to shale oil and about reaches 4500
Hundred million tons, exceed world petroleum resource amount；Indonesia's oil shale, after distillation system extracts oil product, produces the ground slag of 80%, granularity
Less than 1, ground slag be mainly composed of CaCO3, content is 85%, can produce active lime；Domestic oil shale ground slag
Process equipment and method less, if directly discharge can serious environment pollution, the tailings to the granularity less than 1, it is impossible to use
Rotary kiln and shaft furnace produce active lime, and China's active lime uses rotary kiln and two kinds of production methods of shaft furnace, is desirable that and adopts
With block limestone, the limestone granularity scope that rotary kiln uses is 20～50, and the limestone granularity scope that shaft furnace uses is
40～80, oil shale tailings cannot produce active lime with rotary kiln and shaft furnace；Active lime as smelting, chemical industry, build
Build, health care, the basic material of the industry such as firepower electrical plant desulfurization, application is more and more extensive, and demand increases year by year, market
Have a extensive future；Meanwhile, the current production capacity surplus situation of Cement Market in recent years is progressively aggravated, Cement Market continued downturn, cement
Price significantly drops, and part of cement factory and office are in half end-of-life state.
In view of above-mentioned many reasons, with oil shale ground slag as raw material, pre existing is utilized to decompose the portion of clinker line
Subpackage is standby and facility, and improve pre existing decomposing clinker line is Calx line, needs to increase Calx in precalcining system bottom and hangs
Floating cooling system, it is possible to produce qualified Calx, it is proposed that the production technology of a kind of oil shale ground slag suspension lime kiln.
Summary of the invention
The invention aims to overcome the process equipment of current domestic oil shale ground slag and method less, if directly
Run in and put meeting serious environment pollution, the tailings to the granularity less than 1, it is impossible to produce active lime with rotary kiln and shaft furnace,
China's active lime uses rotary kiln and two kinds of production methods of shaft furnace, is desirable that the block limestone of employing, the stone that rotary kiln uses
Lime stone particle size range is 20～50, and the limestone granularity scope that shaft furnace uses is 40～80, and oil shale tailings cannot be used back
Rotary kiln and shaft furnace produce active lime；Active lime is as row such as smelting, chemical industry, building, health care, firepower electrical plant desulfurization
The basic material of industry, application is more and more extensive, and demand increases year by year, wide market；Meanwhile, current water in recent years
Mud market production capacity surplus situation is progressively aggravated, Cement Market continued downturn, and cement price significantly drops, part of cement factory and office in
Half end-of-life state is by reasonably design, it is provided that the production method of a kind of oil shale ground slag suspension lime kiln, with oil shale tail
Ground-slag is raw material, utilizes pre existing to decompose part equipment and the facility of clinker line, improves pre existing and decompose clinker line
For Calx line, need to increase Calx suspension cooling system in precalcining system bottom, it is possible to produce qualified Calx, can
Turn waste into wealth, create economic benefit, solid waste zero-emission can be realized again, protect environment.
The present invention, in order to realize above-mentioned goal of the invention, adopts the following technical scheme that: a kind of oil shale ground slag suspends
The production technology in limekiln, described oil shale ground slag suspension lime kiln, be by: C1 suspended preheater, C2 suspended preheater,
C3 suspended preheater, C4 suspended preheater, C5 gas-solid separator, dore furnace, the first suspension cooler, the second suspension cooler,
3rd suspension cooler, spout, material distributing valve, burner of decomposition furnace, conditioning Tower, kiln tail high-temperature blower, kiln tail dust-precipitator, kiln tail
Blower fan, kiln tail chimney, rotary kiln tail are constituted；Conditioning Tower side arranges rotary kiln tail, and rotary kiln tail is provided above dore furnace；Humidification
Tower opposite side arranges kiln tail chimney, sets gradually kiln tail high-temperature blower and kiln tail dust-precipitator and kiln between conditioning Tower and kiln tail chimney
A tail wind machine, arranges tandem tube between conditioning Tower bottom and kiln tail high-temperature blower and kiln tail dust-precipitator and kiln a tail wind machine and kiln tail chimney
Road；Kiln tail dust-precipitator end opening arranges Calx conveyance conduit, and the Calx conveyance conduit port of export arranges lime bin；
C4 suspended preheater 5 and C5 gas-solid separator, the thermal current pipeline of dore furnace bottom it is respectively provided with above dore furnace
Mouth is provided above burner of decomposition furnace；Between C4 suspended preheater end opening and side, dore furnace bottom, blanking pipe is set；Decompose
Stove is suitable for reading and arranges rising heat of mixing airflow line between side, C5 gas-solid separator top, and C5 gas-solid separator is suitable for reading to be hanged with C4
Rising heat of mixing airflow line is set between floating side, preheater top, below C5 gas-solid separator, material distributing valve is set；
C5 gas-solid separator is provided above on C3 suspended preheater, side, C3 suspended preheater top and C4 suspended preheater
Rising heat of mixing airflow line is set between Kou；The rising mixing steam of C3 suspended preheater end opening and C5 gas-solid separator upper end
Arranging blanking pipe between flow tube road, C3 suspended preheater side arranges C2 suspended preheater, and C3 suspended preheater is suitable for reading and C2
Rising heat of mixing airflow line, C2 suspended preheater end opening and C4 suspended preheater upper end are set between suspended preheater side
Rise and between heat of mixing airflow line, blanking pipe is set；
C3 suspended preheater is provided above C1 suspended preheater, C1 suspended preheater side suitable for reading with C2 suspended preheater it
Between rising heat of mixing airflow line is set, rise heat of mixing airflow line stage casing and spout be set, C1 suspended preheater end opening with
Arranging blanking pipe between the rising heat of mixing airflow line of C3 suspended preheater upper end, C1 suspended preheater is suitable for reading and conditioning Tower
Exhaust output tube road is set between suitable for reading；
Dore furnace side sets gradually the first suspension cooler, the second suspension cooler, the 3rd suspension cooler, dore furnace
End opening and the first suspension cooler suitable for reading between thermal current pipeline is set, the 3rd suspension cooler be provided above first suspension cooling
Device, the 3rd suspension cooler side arranges the second suspension cooler, on the first suspension cooler side and the second suspension cooler
Rising heat of mixing airflow line is set between Kou, rises and between heat of mixing airflow line and material distributing valve, blanking pipe is set, first
Arranging blanking pipe between the rising heat of mixing airflow line of suspension cooler end opening and the 3rd suspension cooler upper end, the 3rd hangs
Floating cooler is suitable for reading mixes unheated air pipeline, unheated air pipeline bottom with arranging between the second suspension cooler side to rise
Unheated air air inlet is set, the rising mixing unheated air pipe of the second suspension cooler end opening and the 3rd suspension cooler side
Arranging blanking pipe between road, the 3rd suspension cooler end opening arranges blanking pipe；
During production, standby two kinds of raw materials: coal dust is the fuel of burner of decomposition furnace；The granularity oil shale ground slag less than 1
For raw material；
Starting kiln tail high-temperature blower and produce operation air-flow by pipeline pump drainage, air is upper by the 3rd suspension cooler side
Rise mixed airflow pipeline and enter the 3rd suspension cooler.
After thermal current runs completely in pipeline, oil shale ground slag being sent into spout, oil shale ground slag is by rising
Heat of mixing airflow line enters in C1 suspended preheater, by C1 suspended preheater gas solid separation and preheating solid particle to
Lower flowing, enters C2 suspended preheater, by C2 suspended preheater gas solid separation and preheating by rising heat of mixing airflow line
Solid particle flow downward, by rise heat of mixing airflow line enter C3 suspended preheater, by C3 suspended preheater gas
Gu separate and the solid particle of preheating flows downward, enter C4 suspended preheater by rising heat of mixing airflow line, pass through C4
600 DEG C of solid particles of suspended preheater gas solid separation and preheating flow downward, and enter dore furnace and realize CaCO3It is decomposed into CaO
And CO2, enter C5 gas-solid separator by rising heat of mixing airflow line, solid by the Calx of C5 gas-solid separator gas solid separation
Body granule flows downward and enters suspension cooling system.
After temperature in dore furnace rises to 850 DEG C～900 DEG C, pass sequentially through C5 suspended preheater 5, C4 suspended preheater,
C3 suspended preheater, C2 suspended preheater, the top of C1 suspended preheater, during by C1 suspended preheater top, C1 suspends pre-
EGT in hot device progressively declines and is down to 300 DEG C～350 DEG C；Then it is cooled to less than 200 DEG C by conditioning Tower and enters kiln tail
High-temperature blower, then pass sequentially through kiln tail dust-precipitator the Solid micro in waste gas is settled, kiln a tail wind machine, kiln tail chimney clean
Discharging after change, the isolated pulverized limestone of kiln tail dust-precipitator delivers into lime bin by pipeline.
Lime solids granule is entered first hanged by material distributing valve and the rising mixed airflow pipeline of C5 gas-solid separator bottom
In floating cooler, the suspension thermal current in the first suspension cooler is entered in dore furnace by thermal current pipeline；First suspension is cold
But the mixed airflow in device is flowed downward in entrance the 3rd suspension cooler by the solid particle after gas solid separation and cooling；
Meanwhile, the rising mixed airflow pipeline in the 3rd suspension cooler enters the second suspension cooler, hangs by second
After floating cooler gas solid separation, the solid particle of cooling flows downward and enters unheated air pipeline, and unheated air passes through air inlet
Entering and enter after unheated air pipeline in the 3rd suspension cooler, solid particle simultaneously enters the along with rising unheated air pipeline
After three suspension cooler carry out gas solid separation, when the lime solids granule in the 3rd suspension cooler is cooled to less than 100 DEG C
Flow downward, enter lime bin by the blanking pipe of end opening.
Beneficial effect: the present invention, with oil shale ground slag as raw material, utilizes pre existing to decompose the part dress of clinker line
Standby and facility, improve pre existing decomposing clinker line is Calx line, needs to increase Calx in precalcining system bottom and suspends cold
But system, it is possible to produce qualified Calx, improves utilization rate of equipment and installations, increases Business Economic Benefit, can turn waste into wealth,
Solid waste zero-emission can be realized again, protect environment.
Accompanying drawing explanation
Fig. 1 is: general assembly structural representation.
In Fig. 1: C1 suspended preheater 1, C2 suspended preheater 2, C3 suspended preheater 3, C4 suspended preheater 4, C5 gas-solid
Separator 5, dore furnace the 6, first suspension cooler the 7, second suspension cooler the 8, the 3rd suspension cooler 9, spout 10, sub-material
Valve 11, burner of decomposition furnace 12, conditioning Tower 13, kiln tail high-temperature blower 14, kiln tail dust-precipitator 15, kiln a tail wind machine 16, kiln tail chimney
17, rotary kiln tail 18.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
Conditioning Tower 13 side arranges rotary kiln tail 18, and rotary kiln tail 18 is provided above dore furnace 6；Conditioning Tower 13 opposite side sets
Put kiln tail chimney 17, between conditioning Tower 13 and kiln tail chimney 17, set gradually kiln tail high-temperature blower 14 and kiln tail dust-precipitator 15 and kiln
A tail wind machine 16, conditioning Tower 13 bottom and kiln tail high-temperature blower 14 and kiln tail dust-precipitator 15 and kiln a tail wind machine 16 and kiln tail chimney 17 it
Between serial pipe is set；Kiln tail dust-precipitator 15 end opening arranges Calx conveyance conduit, and the Calx conveyance conduit port of export arranges lime bin；
C4 suspended preheater 5 and C5 gas-solid separator 5, the steam flow tube of dore furnace 6 bottom it is respectively provided with above dore furnace 6
Road junction is provided above burner of decomposition furnace 12；Between C4 suspended preheater 4 end opening and side, dore furnace 6 bottom, tremie pipe is set
Road；Dore furnace 6 is suitable for reading and arranges rising heat of mixing airflow line, C5 gas-solid separator 5 between side, C5 gas-solid separator 5 top
Rising heat of mixing airflow line is set between suitable for reading and side, C4 suspended preheater 4 top, arranges below C5 gas-solid separator 5 point
Material valve 11；
C5 gas-solid separator 5 is provided above C3 suspended preheater 3, side, C3 suspended preheater 3 top and C4 suspension preheating
Rising heat of mixing airflow line is set between device 4 is suitable for reading；C3 suspended preheater 3 end opening and the rising of C5 gas-solid separator 5 upper end
Arranging blanking pipe between heat of mixing airflow line, C3 suspended preheater 3 side arranges C2 suspended preheater 2, C3 suspension preheating
Device 3 is suitable for reading and arranges rising heat of mixing airflow line between C2 suspended preheater 2 side, and C2 suspended preheater 2 end opening hangs with C4
Between the rising heat of mixing airflow line of floating preheater 4 upper end, blanking pipe is set；
C3 suspended preheater 3 is provided above on C1 suspended preheater 1, C1 suspended preheater 1 side and C2 suspended preheater 2
Rising heat of mixing airflow line is set between Kou, rises heat of mixing airflow line stage casing and spout 10, C1 suspended preheater 1 are set
Arranging blanking pipe between the rising heat of mixing airflow line of end opening and C3 suspended preheater 3 upper end, C1 suspended preheater 1 is suitable for reading
And exhaust output tube road is set between conditioning Tower 13 is suitable for reading；
Dore furnace 6 side sets gradually first suspension cooler the 7, second suspension cooler the 8, the 3rd suspension cooler 9, point
Solve stove 6 end opening and the first suspension cooler 7 suitable for reading between thermal current pipeline is set, the 3rd suspension cooler 9 is provided above first
Suspension cooler 7, the 3rd suspension cooler 9 side arranges the second suspension cooler 8, the first suspension cooler 7 side and second
Rising heat of mixing airflow line is set between suspension cooler 8 is suitable for reading, rises and set between heat of mixing airflow line and material distributing valve 11
Put blanking pipe, set between the rising heat of mixing airflow line of the first suspension cooler 7 end opening and the 3rd suspension cooler 9 upper end
Putting blanking pipe, the 3rd suspension cooler 9 is suitable for reading mixes unheated air pipe with arranging between the second suspension cooler 8 side to rise
Road, unheated air pipeline bottom arranges unheated air air inlet, the second suspension cooler 8 end opening and the 3rd suspension cooler 9 one
Arranging blanking pipe between the rising mixing unheated air pipeline of side, the 3rd suspension cooler 9 end opening arranges blanking pipe；
During production, standby two kinds of raw materials: coal dust is the fuel of burner of decomposition furnace 12；The granularity oil shale tailings less than 1
Powder is raw material；
Starting kiln tail high-temperature blower 14 and produce operation air-flow by pipeline pump drainage, air is by the 3rd suspension cooler 9 side
Rising mixed airflow pipeline enter the 3rd suspension cooler 9.
Embodiment 2
After thermal current runs completely in pipeline, oil shale ground slag being sent into spout 10, oil shale ground slag is by upper
Rise heat of mixing airflow line to enter in C1 suspended preheater 1, by C1 suspended preheater 1 gas solid separation and preheating solid
Grain flows downward, and enters C2 suspended preheater 2, by C2 suspended preheater 2 gas solid separation by rising heat of mixing airflow line
Flow downward with the solid particle of preheating, enter C3 suspended preheater 3 by rising heat of mixing airflow line, suspended by C3 pre-
The solid particle of hot device 3 gas solid separation and preheating flows downward, and enters C4 suspended preheater by rising heat of mixing airflow line
4, flowed downward by 600 DEG C of solid particles of C4 suspended preheater 4 gas solid separation and preheating, enter dore furnace 6 and realize CaCO3
It is decomposed into CaO and CO2, enter C5 gas-solid separator 5, by C5 gas-solid separator 5 gas-solid by rising heat of mixing airflow line
The lime solids granule separated flows downward and enters suspension cooling system.
Embodiment 3
After temperature in dore furnace 6 rises to 850 DEG C～900 DEG C, pass sequentially through C5 suspended preheater 5, C4 suspended preheater
4, C3 suspended preheater 3, C2 suspended preheater 2, the top of C1 suspended preheater 1, during by C1 suspended preheater 1 top, C1
EGT in suspended preheater 1 progressively declines and is down to 300 DEG C～350 DEG C；Then it is cooled to less than 200 DEG C by conditioning Tower 13
Enter kiln tail high-temperature blower 14, then pass sequentially through kiln tail dust-precipitator 15 Solid micro in waste gas is settled, kiln a tail wind
Machine 16, kiln tail chimney 17 are discharged after purifying, and the isolated pulverized limestone of kiln tail dust-precipitator 15 delivers into lime bin by pipeline.
Embodiment 4
Lime solids granule enters first by material distributing valve 11 and the rising mixed airflow pipeline of C5 gas-solid separator 5 bottom
In suspension cooler 7, the suspension thermal current in the first suspension cooler 7 is entered in dore furnace 6 by thermal current pipeline；First hangs
Mixed airflow in floating cooler 7 is flowed downward by the solid particle after gas solid separation and cooling and enters the 3rd suspension cooler
In 9；
Meanwhile, the rising mixed airflow pipeline in the 3rd suspension cooler 9 enters the second suspension cooler 8, by second
After suspension cooler 8 gas solid separation, the solid particle of cooling flows downward and enters unheated air pipeline, and unheated air passes through air intake
Mouth enters in the 3rd suspension cooler 9 after entering unheated air pipeline, and solid particle enters along with rising unheated air pipeline simultaneously
Entering after the 3rd suspension cooler 9 carries out gas solid separation, the lime solids granule in the 3rd suspension cooler 9 is cooled to 100 DEG C
Flow downward time following, enter lime bin by the blanking pipe of end opening.
Claims (4)
1. a production technology for oil shale ground slag suspension lime kiln, described oil shale ground slag suspension lime kiln, be by:
C1 suspended preheater (1), C2 suspended preheater (2), C3 suspended preheater (3), C4 suspended preheater (4), C5 gas-solid separator
(5), dore furnace (6), the first suspension cooler (7), the second suspension cooler (8), the 3rd suspension cooler (9), spout
(10), material distributing valve (11), burner of decomposition furnace (12), conditioning Tower (13), kiln tail high-temperature blower (14), kiln tail dust-precipitator (15),
Kiln a tail wind machine (16), kiln tail chimney (17), rotary kiln tail (18) are constituted；It is characterized in that: conditioning Tower (13) side arranges revolution
Kiln tail (18), rotary kiln tail (18) is provided above dore furnace (6)；Conditioning Tower (13) opposite side arranges kiln tail chimney (17), humidification
Kiln tail high-temperature blower (14) and kiln tail dust-precipitator (15) and kiln a tail wind machine is set gradually between tower (13) and kiln tail chimney (17)
(16), conditioning Tower (13) bottom and kiln tail high-temperature blower (14) and kiln tail dust-precipitator (15) and kiln a tail wind machine (16) and kiln tail chimney
(17) serial pipe is set between；Kiln tail dust-precipitator (15) end opening arranges Calx conveyance conduit, and the Calx conveyance conduit port of export sets
Put lime bin；
Dore furnace (6) top is respectively provided with C4 suspended preheater (5) and C5 gas-solid separator (5), the steam of dore furnace (6) bottom
Flow tube road junction is provided above burner of decomposition furnace (12)；Set between C4 suspended preheater (4) end opening and dore furnace (6) side, bottom
Put blanking pipe；Dore furnace (6) is suitable for reading and arranges rising heat of mixing airflow line between C5 gas-solid separator (5) side, top,
C5 gas-solid separator (5) is suitable for reading and arranges rising heat of mixing airflow line, C5 gas-solid between C4 suspended preheater (4) side, top
Separator (5) lower section arranges material distributing valve (11)；
C5 gas-solid separator (5) is provided above C3 suspended preheater (3), and C3 suspended preheater (3) side, top and C4 suspend pre-
Rising heat of mixing airflow line is set between hot device (4) is suitable for reading；On C3 suspended preheater (3) end opening and C5 gas-solid separator (5)
Arranging blanking pipe between the rising heat of mixing airflow line of end, C3 suspended preheater (3) side arranges C2 suspended preheater
(2), C3 suspended preheater (3) is suitable for reading and arranges rising heat of mixing airflow line between C2 suspended preheater (2) side, and C2 suspends
Between the rising heat of mixing airflow line of preheater (2) end opening and C4 suspended preheater (4) upper end, blanking pipe is set；
C3 suspended preheater (3) is provided above C1 suspended preheater (1), C1 suspended preheater (1) side and C2 suspended preheater
(2) arranging rising heat of mixing airflow line between suitable for reading, rise heat of mixing airflow line stage casing and arrange spout (10), C1 suspends
Arranging blanking pipe between the rising heat of mixing airflow line of preheater (1) end opening and C3 suspended preheater (3) upper end, C1 suspends
Preheater (1) is suitable for reading and conditioning Tower (13) suitable for reading between exhaust output tube road is set；
Dore furnace (6) side sets gradually the first suspension cooler (7), the second suspension cooler (8), the 3rd suspension cooler
(9), dore furnace (6) end opening and the first suspension cooler (7) suitable for reading between thermal current pipeline, the 3rd suspension cooler (9) are set
Being provided above the first suspension cooler (7), the 3rd suspension cooler (9) side arranges the second suspension cooler (8), and first suspends
Cooler (7) side and the second suspension cooler (8) suitable for reading between arrange rising heat of mixing airflow line, rise heat of mixing air-flow
Between pipeline and material distributing valve (11), blanking pipe is set, the first suspension cooler (7) end opening and the 3rd suspension cooler (9) upper end
Rising heat of mixing airflow line between blanking pipe is set, the 3rd suspension cooler (9) is suitable for reading with the second suspension cooler (8)
Arranging rising mixing unheated air pipeline between side, unheated air pipeline bottom arranges unheated air air inlet, and second suspends
Between the rising mixing unheated air pipeline of cooler (8) end opening and the 3rd suspension cooler (9) side, blanking pipe is set, the
Three suspension cooler (9) end opening arranges blanking pipe；
During production, standby two kinds of raw materials: coal dust is the fuel of burner of decomposition furnace (12)；The granularity oil shale ground slag less than 1
For raw material；
Starting kiln tail high-temperature blower (14) and produce operation air-flow by pipeline pump drainage, air is by the 3rd suspension cooler (9) side
Rising mixed airflow pipeline enter the 3rd suspension cooler (9).
The production technology of a kind of oil shale ground slag suspension lime kiln the most according to claim 1, it is characterised in that: 1 pipe
After thermal current runs completely in road, oil shale ground slag being sent into spout (10), oil shale ground slag is by rising the heat of mixing
Airflow line enters in C1 suspended preheater (1), by C1 suspended preheater (1) gas solid separation and preheating solid particle to
Lower flowing, enters C2 suspended preheater (2), by C2 suspended preheater (2) gas solid separation by rising heat of mixing airflow line
Flow downward with the solid particle of preheating, enter C3 suspended preheater (3) by rising heat of mixing airflow line, suspended by C3
The solid particle of preheater (3) gas solid separation and preheating flows downward, and enters C4 suspension in advance by rising heat of mixing airflow line
Hot device (4), is flowed downward by 600 DEG C of solid particles of C4 suspended preheater (4) gas solid separation and preheating, enters dore furnace
(6) CaCO is realized3It is decomposed into CaO and CO2, enter C5 gas-solid separator (5), by C5 gas by rising heat of mixing airflow line
The lime solids granule of solid separator (5) gas solid separation flows downward and enters suspension cooling system.
The production technology of a kind of oil shale ground slag suspension lime kiln the most according to claim 1, it is characterised in that: decompose
After temperature in stove (6) rises to 850 DEG C～900 DEG C, pass sequentially through C5 suspended preheater (5), C4 suspended preheater (4), C3 hang
Floating preheater (3), C2 suspended preheater (2), the top of C1 suspended preheater (1), during by C1 suspended preheater (1) top,
EGT in C1 suspended preheater (1) progressively declines and is down to 300 DEG C～350 DEG C；Then it is cooled to 200 by conditioning Tower (13)
Enter kiln tail high-temperature blower (14) below DEG C, then pass sequentially through kiln tail dust-precipitator (15) Solid micro in waste gas is sunk
Fall, kiln a tail wind machine (16), kiln tail chimney (17) are discharged after purifying, and kiln tail dust-precipitator (15) isolated pulverized limestone is defeated by pipeline
It is fed into lime bin.
The production technology of a kind of oil shale ground slag suspension lime kiln the most according to claim 1, it is characterised in that: Calx
Solid particle enters the first suspension cooling by material distributing valve (11) and the rising mixed airflow pipeline of C5 gas-solid separator (5) bottom
In device (7), the suspension thermal current in the first suspension cooler (7) is entered in dore furnace (6) by thermal current pipeline；First suspends
Mixed airflow in cooler (7) is flowed downward by the solid particle after gas solid separation and cooling and enters the 3rd suspension cooler
(9) in；
Meanwhile, the rising mixed airflow pipeline in the 3rd suspension cooler (9) enters the second suspension cooler (8), by second
After suspension cooler (8) gas solid separation, the solid particle of cooling flow downward entrance unheated air pipeline, unheated air pass through into
Air port enters in the 3rd suspension cooler (9) after entering unheated air pipeline, and solid particle is same along with rising unheated air pipeline
In time, enter after the 3rd suspension cooler (9) carries out gas solid separation, and the lime solids granule in the 3rd suspension cooler (9) is cooled
Flow downward during to less than 100 DEG C, enter lime bin by the blanking pipe of end opening.
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| CN107759115A (en) * | 2017-12-12 | 2018-03-06 | 泰安中意重型工业设备有限公司 | The new process for calcining and device of a kind of powdered lime |
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