CN108916868B - A kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method - Google Patents
A kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method Download PDFInfo
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- CN108916868B CN108916868B CN201810610474.6A CN201810610474A CN108916868B CN 108916868 B CN108916868 B CN 108916868B CN 201810610474 A CN201810610474 A CN 201810610474A CN 108916868 B CN108916868 B CN 108916868B
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- Prior art keywords
- electric heating
- weep hole
- heating sheets
- fluidized bed
- thermocouple
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
- F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying methods, the following steps are included: opening up weep hole: being blocked respectively to material returning device and cyclone dip-leg and material returning device and the connectivity part of burner hearth return port, several weep holes are opened up out on material returning device cylinder；Electric heating sheets are installed: upwards every 500 ± 50mm winding, one circle electric heating sheets since the lower part of material returning device cylinder；Installation thermocouple: thermocouple is fixed at weep hole；Heat up: electric heating sheets, which are powered, to heat up, and carries out baker, makes to be warming up to 110-315 DEG C at thermal insulation layer castable and keep for 24 hours until being discharged at weep hole without steam；After baker, electric heating sheets power-off removes electric heating sheets and thermocouple, closes weep hole.The present invention directly can heat the thermal insulation layer castable of material return device for circulating fluidized bed boiler lining by way of the heating of outside, can fast and effeciently remove the free water in thermal insulation layer castable, save the energy, reduce baker cost.
Description
Technical field
The present invention relates to the low temperature baker field of pipeline castable lining more particularly to a kind of circulating fluidized bed boiler returning charges
Device lining low temperature furnace drying method.
Background technique
Circulating fluidized bed boiler (CFBB) material returning device is the pipeline for connecting cyclone dip-leg and burner hearth emulsion zone, by revolving
The coal ash particle that wind separator is isolated returns to burner hearth by material returning device and participates in fluidisation, burning.Current CFBB material returning device cylinder
Refractory liner uses multilayer insulation wear resistance lining structure.Generally use two layers or two layers or more of castable refractory lining structure.
Thermal insulation layer is generally the lesser inorganic material of the thermal coefficients such as heat insulating casting material, ceramic fiber cotton or calcium silicate board.
Often there is wearing layer cracking, thermal insulation layer erosion phenomenon after long-term use in CFBB material returning device Shell Lining, needs
Lining is carried out to reform.New work or the refractory liner reformed need to carry out ability after baker processing due to containing larger amount of moisture
It comes into operation.Common baker mode includes two kinds: entire boiler baker and independent baker after blocking to material returning device entrance together.It is right
Baker after material returning device Shell Lining individually repairs, usually independent baker.Common furnace drying method include: firewood baker,
The hot fume stove quality of coal-fired baker, fuel oil baker, combustion gas baker, electric oven etc., intermediate fuel oil or combustion gas is best, using most
It is extensive.
The independent baker of material returning device cylinder refractory liner has the following problems: need to material returning device and cyclone dip-leg and
It is blocked with burner hearth return port to reduce fuel consumption, expends biggish artificial and working hour, material.Due on material returning device cylinder
Only there is a manhole at lectulum position, burner can only be arranged at manhole, and manhole is in material returning device middle position, it is necessary to be adopted
The measure of hot fume raising and lowering is taken so that entire temperature of furnace lining is evenly distributed, in this way increases baker difficulty.No matter which is taken
Kind method baker belongs to single-side heating of the insulating and wearing-resistant lining since heated working face, and wearing layer is initially heated, is dehydrated,
Finally by the own moisture removal in heat insulating casting material.Wearing layer casting Material is close greatly, the porosity is low, liter when to avoid baker
Warm excessive velocities cause wearing layer to burst, and mostly use the measures such as addition anti-knock agent that wearing layer lining is allow to be rapidly heated at present.
Containing the moisture much larger than wearing layer castable in heat insulating casting material, and the thickness of general heat insulating casting material is also larger, total moisture
Content is big, forms vapor rapid spatial expansion in temperature-rise period, be easy to cause the cracking of wearing layer.Therefore, baker needs slow
Slow heating will also carry out constant temperature in certain temperature so that the moisture in lining sufficiently removes, generally require 5-7 days time,
A large amount of fuel and artificial is expended, it is with high costs.
The presence of problem above keeps material return device for circulating fluidized bed boiler refractory liner maintenance time long, costly, serious to make
The about rapid starting/stopping of equipment.
Summary of the invention
The present invention provides a kind of material return device for circulating fluidized bed boiler lining to solve shortcoming in the prior art
Low temperature furnace drying method, outside heating by way of directly to the thermal insulation layer castable of material return device for circulating fluidized bed boiler lining into
Row heating, can fast and effeciently remove the free water in thermal insulation layer castable, save the energy, reduce baker cost.
In order to solve the above technical problems, the present invention adopts the following technical scheme: a kind of material return device for circulating fluidized bed boiler serves as a contrast
In low temperature furnace drying method, comprising the following steps:
A, it opens up weep hole: the connection of material returning device and cyclone dip-leg and material returning device and burner hearth return port is punished
It is not blocked, the hydrofuge of the moisture discharge when opening up out several for baker on material returning device cylinder in thermal insulation layer castable
Thermal insulation layer castable surface is exposed in hole；
B, electric heating sheets are installed: upwards every 500 ± 50mm winding, one circle electric heating since the lower part of material returning device cylinder
Piece, until the junction of material returning device cylinder and cyclone dip-leg；
C, thermocouple is installed: thermocouple is fixed at weep hole, for measuring the thermal insulation layer exposed at weep hole casting
The temperature of material；
D, heat up: electric heating sheets, which are powered, to heat up, and carries out baker, makes to be warming up to 110-315 DEG C at thermal insulation layer castable and protect
It holds for 24 hours until being discharged at weep hole without steam；
E, after baker, electric heating sheets power-off removes electric heating sheets and thermocouple, and by weep hole welded closure.
Preferably, in a step, each weep hole is evenly distributed on material returning device cylinder, and the area of single weep hole >=
50*50mm, the spacing of each adjacent two weep hole is between 500-1000mm, positioned at the weep hole of material returning device cylinder different height
It is staggeredly arranged, weep hole is avoided at metal anchorage.
Preferably, it is covered with heat-insulation blanket on the outside of the electric heating sheets in b step, heat is prevented to scatter and disappear into air, led to
It crosses bandage or iron wire electric heating sheets and heat-insulation blanket are fixed on material returning device cylinder.
Preferably, during the baker of Step d, when the temperature of thermal insulation layer castable is between 100-150 DEG C, with 5-15
DEG C/speed of h heats up, stop heating when being warming up to 150 DEG C, and observe the hydrofuge gas situation of weep hole, until weep hole
Until place is discharged without steam.
Preferably, it in step e, is welded at weep hole using weep hole cover plate and closes weep hole, and in weep hole
Fiberfill fibers cotton is to seal clearance between cover plate and thermal insulation layer castable.
Preferably, the shape of the weep hole is rectangle or circle.
Preferably, heat-insulation blanket is made of nano heat insulating material or ceramic fibre, heat-insulation blanket with a thickness of 10-50mm, every
Flameproof fabric is coated on the outside of hot blanket.
Preferably, the heating of electric heating sheets is controlled by control cabinet, each electric heating sheets by electric heating sheets conducting wire with
Control cabinet connects, and during baker, control cabinet is fed back to by thermocouple monitoring temperature, and by the temperature signal measured, by controlling
The heating power of cabinet control electric heating sheets.
Preferably, the quantity of thermocouple and the quantity of electric heating sheets match, and each thermocouple is distinguished by control cabinet
Corresponding a piece of electric heating sheets.
Preferably, thermocouple is provided with one, and single thermocouple corresponds to multi-disc electric heating sheets by control cabinet simultaneously.
By adopting the above technical scheme, the invention has the following advantages that
The present invention is mainly used winds electric heating sheets directly from outside to the progress of thermal insulation layer castable on material returning device cylinder
The method of heating carries out low temperature baker to material return device for circulating fluidized bed boiler lining, can fast and effeciently remove thermal insulation layer casting
Free water in material (first heats internally positioned wearing layer castable, then transfers heat to thermal insulation layer and pour compared to previous baker mode
Moisture removal is removed in material feeding), problem core can be directed at and save the energy, eliminate and thermal insulation layer castable is expected by wearing layer casting
Thermal losses reduces baker total used time, baker most can be completed for 24 hours fastly, greatly reduces time cost and human cost, and by
It can be rapidly heated when the temperature of thermal insulation layer castable is 0-100 DEG C, thermal storage time can be shortened.
Simultaneously as the thermal coefficient of thermal insulation layer castable is larger, make in wearing layer castable in the higher Shi Caihui of temperature
Free moisture removing, and the moisture in thermal insulation layer castable at this time has removed major part, forms the negligible amounts of vapor,
Therefore the explosion of wearing layer castable is not will cause.
To sum up, the present invention is mainly by way of the heating of outside directly to the heat-insulated of material return device for circulating fluidized bed boiler lining
Layer castable is heated, and the free water in thermal insulation layer castable is removed, and furnace drying time is short, the casting of good operation conditions, thermal insulation layer
The free water removal of material is thorough, saves the energy, and avoid the explosion risk of wearing layer castable.
Detailed description of the invention
Fig. 1 is furnace drying method schematic diagram of the invention；
In figure: 1, material returning device cylinder, 2, weep hole, 3, electric heating sheets, 4, thermocouple wire, 5, control cabinet, 6, electric heating
Piece conducting wire, 7, thermal insulation layer castable, 8, wearing layer castable, 9, metal anchorage, 10, heat-insulation blanket, 11, flameproof fabric.
Specific embodiment
As shown in Figure 1, a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method of the invention, including following step
It is rapid:
A, it opens up weep hole 2: the connection of material returning device and cyclone dip-leg and material returning device and burner hearth return port is punished
It is not blocked, manhole door is crack, the water when opening up out several for baker on material returning device cylinder 1 in thermal insulation layer castable 7
Divide the weep hole 2 of discharge, exposes 7 surface of thermal insulation layer castable.
Each weep hole 2 is evenly distributed on material returning device cylinder 1, area >=50*50mm of single weep hole 2, per adjacent
Between 500-1000mm, the weep hole 2 positioned at 1 different height of material returning device cylinder is staggeredly arranged the spacing of two weep holes 2, row
Wet hole 2 is avoided at metal anchorage 9.The shape of weep hole 2 can be rectangle or circle, and the weep hole 2 if it is design is round
Shape, the welding rod that diameter 3.2mm or more can be used burn hole.
B, electric heating sheets 3 are installed: being added upwards every 500 ± 50mm winding, one circle electricity since the lower part of material returning device cylinder 1
Backing 3, until the junction of material returning device cylinder 1 and cyclone dip-leg.
The outside of electric heating sheets 3 coats heat-insulation blanket 10, and the heat for preventing electric heating sheets 3 from generating scatters and disappears into air, passes through
Electric heating sheets 3 and heat-insulation blanket 10 are fixed on material returning device cylinder 1 by bandage or iron wire；Heat-insulation blanket 10 uses nano heat insulating material
Or ceramic fibre is made, heat-insulation blanket 10 with a thickness of 10-50mm, the outside of heat-insulation blanket 10 is coated with flameproof fabric 11；Electric heating sheets 3
Maximum heating temperature >=500 DEG C, the power of monolithic electric heating sheets 3 is 1-30KW, the shape of electric heating sheets 3 can be it is band-like,
Sheet or other shapes are realized anticreep by using potsherd isolation.
C, thermocouple is installed: thermocouple is fixed at weep hole 2, is poured for measuring the thermal insulation layer exposed at weep hole 2
The temperature of material feeding 7.
As needed, thermocouple can individually correspond to a piece of electric heating sheets 3 by control cabinet or correspond to multi-disc electricity simultaneously and add
Backing 3, for example, the quantity of setting thermocouple and the quantity of electric heating sheets 3 match, each thermocouple individually corresponds to a piece of electricity
Heating sheet 3 is easy to implement the accurate control of monolithic electric heating sheets 3；Or one or more thermocouples, the same thermocouple are set
Corresponding multi-disc electric heating sheets 3, i.e. control cabinet 5 control more near the thermocouple according to the temperature signal that the same thermocouple measures
Piece electric heating sheets 3 save component while realizing control function.
D, it heats up: heating rate, thermostat temperature and soaking time being arranged by control cabinet 5, then starts control cabinet 5, makes
Electric heating sheets 3, which are powered, to heat up, and carries out baker, for the temperature of thermal insulation layer castable 7 at 100 DEG C or less, thermal insulation layer castable 7 is always
In heat storage state, the free water in thermal insulation layer castable 7 will not be discharged, and heating rate can be controlled according to actual needs,
It can heat up, can also be heated up according to the speed of 20 DEG C/h according to the speed of 10 DEG C/h, thermal insulation layer castable 7
It when temperature is between 100-150 DEG C, is heated up with the speed of 10 DEG C/h, stops heating when being warming up to 150 DEG C, keep the temperature
And every two hours observe weep hole 2 hydrofuge gas situation, until weep hole 2 at without steam be discharged until, general used time 24-36h；
The heating of electric heating sheets 3 is controlled by control cabinet 5, and each electric heating sheets 3 pass through electric heating sheets conducting wire 6 and control
Cabinet 5 connects, and electric heating sheets conducting wire 6 is protected with heat-insulated and protection against electric shock measure, such as using ceramic tube, potsherd, electric heating sheets
Conducting wire 6 must not be contacted directly with circumferential metal object, the length of electric heating sheets conducting wire 6 under the premise of meeting actual use as far as possible
It is short.
Temperature controller is installed, thermocouple is controlled by the temperature in thermocouple wire 4 and control cabinet 5 in control cabinet 5
The temperature signal measured during baker, by thermocouple monitoring temperature, and is fed back to the temperature control in control cabinet 5 by instrument connection
Instrument processed under the automatic control of temperature controller, requires, uniformly according to preset speed and soaking time according to heating
Heating, and heating and power-off can be automatically controlled compared with set temperature value by the temperature value to thermocouple actual measurement, control
Cabinet 5 processed has control function of power simultaneously, can be prevented according to the difference adjust automatically heating power of set temperature and observed temperature
Only heated current is fluctuated, reaches uniformly heated purpose.
E, after baker, control cabinet 5 is closed, electric heating sheets 3 power off, and remove electric heating sheets 3 and thermocouple, and use row
2 cover plate of wet hole by 2 welded closure of weep hole, while between 2 cover plate of weep hole and thermal insulation layer castable 7 fiberfill fibers cotton to
Seal clearance.
Thermal insulation layer castable 7 is the refractory material that bulk density is small, the porosity is big, generally cement combination castable, is used
Water is larger.The purpose of baker is main or removes the free moisture of thermal insulation layer castable 7.Directly added using electric heating sheets 3
The method of hot thermal insulation layer castable 7 makes free water in thermal insulation layer castable 7 at a lower temperature (generally 110-150 DEG C)
It is discharged with vapor form, problem core can be directed at and saves the energy.Free water in thermal insulation layer castable 7 forms vapor
It is largely discharged from weep hole 2, while heat can be transmitted to wearing layer castable 8 and be heated it, the trip in wearing layer castable 8
It can be discharged from 8 surface of wearing layer castable from water.
Wearing layer castable 8 is fine and close castable, and amount of water is small, the porosity is low.Heating is returned first when electric heating sheets 3 heat
Glassware cylinder 1, followed by thermal insulation layer castable 7 can also act on heating wearing layer castable 8 due to the heat bridge of metal anchorage 9.
Since the thermal coefficient of thermal insulation layer castable 7 is larger, keep the free moisture in wearing layer castable 8 de- in the higher Shi Caihui of temperature
It removes, and the moisture in thermal insulation layer castable 7 at this time has removed major part, forms the negligible amounts of vapor, therefore will not make
At the explosion of wearing layer castable 8.
Using not more than 315 DEG C of oven drying temperature of the above method, baker can carry out muffle kiln or benefit after the completion
Slow heating when with furnace lifting toast and can come into operation between high temperature, short time.The above method can promote the use of similar pipeline and pour
The low temperature baker or winter protection baker of material feeding lining.
The electric heating sheets 3, heat-insulation blanket 10, thermocouple and control cabinet 5 are existing conventional equipment, and specific structure is no longer detailed
It states.The multi-channel temperature control of the model XMTJK801/2 of Yuyao City Teng Hui temperature controller Watch Factory production can be used in temperature controller
Device.
The present embodiment not makes any form of restriction shape of the invention, material, structure etc., all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, belong to the technology of the present invention side
The protection scope of case.
Claims (10)
1. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method, it is characterised in that: the following steps are included:
A, it opens up weep hole: material returning device and cyclone dip-leg and material returning device and the connectivity part of burner hearth return port is carried out respectively
It blocks, the weep hole of the moisture discharge when opening up out several for baker on material returning device cylinder in thermal insulation layer castable exposes
Thermal insulation layer castable surface；
B, install electric heating sheets: since the lower part of material returning device cylinder upwards every 500 ± 50mm winding one circle electric heating sheets, one
Until the junction of material returning device cylinder and cyclone dip-leg；
C, thermocouple is installed: thermocouple is fixed at weep hole, for measuring the thermal insulation layer castable exposed at weep hole
Temperature；
D, heat up: electric heating sheets, which are powered, to heat up, and carries out baker, makes to be warming up to 110-315 DEG C at thermal insulation layer castable and keep for 24 hours
Until at weep hole without steam discharge；
E, after baker, electric heating sheets power-off removes electric heating sheets and thermocouple, and by weep hole welded closure.
2. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 1, it is characterised in that:
In a step, each weep hole is evenly distributed on material returning device cylinder, area >=50*50mm of single weep hole, per adjacent two
The spacing of a weep hole is between 500-1000mm, and the weep hole positioned at material returning device cylinder different height is staggeredly arranged, weep hole
It avoids at metal anchorage.
3. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 1, it is characterised in that:
It is covered with heat-insulation blanket on the outside of electric heating sheets in b step, prevents heat to scatter and disappear into air, passes through bandage or iron wire
Electric heating sheets and heat-insulation blanket are fixed on material returning device cylinder.
4. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 1, it is characterised in that:
During the baker of Step d, when the temperature of thermal insulation layer castable is between 100-150 DEG C, carried out with the speed of 5-15 DEG C/h
Heating stops heating when being warming up to 150 DEG C, and observes the hydrofuge gas situation of weep hole, until being without steam discharge at weep hole
Only.
5. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 1, it is characterised in that:
It in step e, is welded at weep hole using weep hole cover plate and closes weep hole, and be poured in weep hole cover plate and thermal insulation layer
Fiberfill fibers cotton is to seal clearance between material.
6. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 2, it is characterised in that:
The shape of the weep hole is rectangle or circle.
7. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 3, it is characterised in that:
Heat-insulation blanket is made of nano heat insulating material or ceramic fibre, heat-insulation blanket with a thickness of 10-50mm, be coated on the outside of heat-insulation blanket
Flameproof fabric.
8. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 4, it is characterised in that:
The heating of electric heating sheets is controlled by control cabinet, and each electric heating sheets are connect by electric heating sheets conducting wire with control cabinet, baker
In the process, by thermocouple monitoring temperature, and the temperature signal measured is fed back into control cabinet, by control cabinet control electric heating sheets
Heating power.
9. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 8, it is characterised in that:
The quantity of thermocouple and the quantity of electric heating sheets match, and each thermocouple passes through control cabinet and respectively corresponds a piece of electric heating
Piece.
10. a kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method according to claim 8, feature exist
In: thermocouple is provided with one, and single thermocouple corresponds to multi-disc electric heating sheets by control cabinet simultaneously.
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| CN201810610474.6A CN108916868B (en) | 2018-06-14 | 2018-06-14 | A kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method |
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| CN201810610474.6A CN108916868B (en) | 2018-06-14 | 2018-06-14 | A kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method |
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| CN108916868B true CN108916868B (en) | 2019-09-10 |
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| CN114659376B (en) * | 2022-04-11 | 2023-07-28 | 宁夏昌茂祥冶炼有限公司 | Submerged arc furnace baking method with three-phase electrode and control device thereof |
| CN114752419B (en) * | 2022-05-17 | 2023-03-14 | 安徽理工大学 | Gasifier drying device capable of automatically adjusting temperature |
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| CN101387408A (en) * | 2007-09-11 | 2009-03-18 | 李朝侠 | Domestic lining structure for large-sized circulating fluidized bed boiler |
| CN102788508A (en) * | 2011-07-21 | 2012-11-21 | 宁波连通设备制造有限公司 | Furnace drying method of industrial furnace module and furnace drying device for industrial furnace module |
| WO2013044280A1 (en) * | 2011-09-28 | 2013-04-04 | Gragger Helmut | Oven |
| CN103939937A (en) * | 2014-04-15 | 2014-07-23 | 邹平耀华特耐科技有限公司 | Quick repair method for boiler lining material |
| CN104019446A (en) * | 2014-06-19 | 2014-09-03 | 宜兴瑞泰耐火材料工程有限公司 | Energy-saving environmentally-friendly boiler baking method for CFB boiler wear-resisting lining engineering |
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- 2018-06-14 CN CN201810610474.6A patent/CN108916868B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387408A (en) * | 2007-09-11 | 2009-03-18 | 李朝侠 | Domestic lining structure for large-sized circulating fluidized bed boiler |
| CN102788508A (en) * | 2011-07-21 | 2012-11-21 | 宁波连通设备制造有限公司 | Furnace drying method of industrial furnace module and furnace drying device for industrial furnace module |
| WO2013044280A1 (en) * | 2011-09-28 | 2013-04-04 | Gragger Helmut | Oven |
| CN103939937A (en) * | 2014-04-15 | 2014-07-23 | 邹平耀华特耐科技有限公司 | Quick repair method for boiler lining material |
| CN104019446A (en) * | 2014-06-19 | 2014-09-03 | 宜兴瑞泰耐火材料工程有限公司 | Energy-saving environmentally-friendly boiler baking method for CFB boiler wear-resisting lining engineering |
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| CN108916868A (en) | 2018-11-30 |
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