CN201462881U - Cement kiln pulverized coal burner - Google Patents
Cement kiln pulverized coal burner Download PDFInfo
- Publication number
- CN201462881U CN201462881U CN2009200830971U CN200920083097U CN201462881U CN 201462881 U CN201462881 U CN 201462881U CN 2009200830971 U CN2009200830971 U CN 2009200830971U CN 200920083097 U CN200920083097 U CN 200920083097U CN 201462881 U CN201462881 U CN 201462881U
- Authority
- CN
- China
- Prior art keywords
- resistant
- cement kiln
- flame retardant
- heat
- retardant coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a cement kiln pulverized coal burner of which the tail end of a fireproof layer is sheathed with a heat-resistant and wear-resistant device. The outer wall of a heat-resisting steel pipe of the cement kiln pulverized coal burner is cast with a fireproof layer. The tail end of the fireproof layer is sheathed with a heat-resistant and wear-resistant ceramic pipe to protect the castables of the fireproof layer and achieve the purpose of protecting the core of the pulverized coal burner. An expansion gap is arranged between the ceramic pipe and the fireproof layer and filled with heat-resistant elastic filler. The cement kiln pulverized coal burner is heat-resistant, especially the tail end part thereof is heat-resistant, is not oxidized, wear-resistant, has higher mechanical strength and rigidity, excellent toughness and shock resistance, good integrity, little environmental pollution, easy installation, prolonged service life and reasonable overhaul cycle, and achieves the effects of reducing cost, saving energy and reducing emission.
Description
Technical field
The utility model relates to a kind of cement kiln coal injection pipe of the terminal socket heat resistant and wear resistant damage device at flame retardant coating, belong to the cement kiln technical field of burner.
Background technology
The working environment of cement kiln coal injection pipe is about 1400 ℃, and its flame temperature is worked in alkaline atmosphere about 2000 ℃ for a long time, and the variations in temperature of coal powder injection pipe end is very frequent, the temperature difference is very big, therefore requires very high to its thermal shock resistance.Simultaneously, washing away that coal powder injection pipe end is subjected to all the time in kiln that washing away of air-flow, especially bottom be subjected to is more serious, and this air-flow clips the clinker dust in the kiln, and therefore, the coal powder injection pipe needs enough wearabilities.
General technology generally is to adopt pouring fireproof material on the heat resisting pipe of coal powder injection pipe now.This just requires to pour into a mould material will possess good fire resistance and good wearability simultaneously.But domestic most of mould material has fire resistance preferably, but wearability is relatively poor.The general material feeding life-span of watering only is 3 months generally, uses sometimes and will fall that piece peels off and must repair or change because of watering material feeding in several days.Because it is integrated poured on the steel pipe of burner coal powder injection pipe watering material feeding, changing at every turn and repairing all needs burner integral demounting and installation are had a strong impact on the normal operation of production line like this.Water material feeding and damage, also can cause the steel construction of coal powder injection pipe to damage.
Use the cement kiln of multiple wind duct combusting device, because secondary air flow is many, it is big to go into the kiln wind speed, cooling machine and kiln centerline offset in addition, the secondary wind of going into kiln is also with eddy motion, the secondary wind that have a large amount of thin grog particles enter the terminal bottom that will directly wash away coal powder injection pipe flame retardant coating behind the rotary kiln, cause the terminal bottom of flame retardant coating to water material feeding and damage at first.Special make production line often suspend, change and material feeding is watered in repairing because coal powder injection pipe end waters material feeding and very easily damages.Make the burner life cycle shorten greatly, the labor intensive material resources have been brought time cost and economic loss to producer.
Summary of the invention
The utility model is at above defective, proposes a kind of cement kiln coal injection pipe of the terminal socket heat resistant and wear resistant damage device at flame retardant coating.
The technical solution of the utility model is as follows:
A kind of cement kiln coal injection pipe by heat resisting pipe be cast in that the flame retardant coating of outer wall of steel pipe is compound to be constituted, is with earthenware at the flame retardant coating of coal powder injection pipe end, leaves dilatation joint in the middle of earthenware and the flame retardant coating, and resistant to elevated temperatures elasticity inserts is arranged in the dilatation joint.
Described earthenware comprises mesh skeleton and aggregate, and skeleton is made by heat resisting steel, and aggregate is the Ceramic Composite material, takes integrated poured mode to be shaped.
Inserts in the described dilatation joint is a high alumina matter cellucotton inserts.
Described flame retardant coating is the mullite pouring material flame retardant coating.
The beneficial effect that the utility model reaches:
The utility model has effectively been protected flame retardant coating by the terminal socket earthenware at coal powder injection pipe flame retardant coating, avoids flame retardant coating to be subjected to airflow scouring, is worn and torn.Owing in dilatation joint, used the elasticity inserts, make earthenware and flame retardant coating in conjunction with compactness, can not slide.
Earthenware is compound by mesh skeleton and aggregate, and both high temperature resistant, not oxidation, wear-resistant also is not easy embrittlement.
Because the coefficient of expansion of flame retardant coating and earthenware is different, the elasticity inserts makes both be difficult for breaking because of the stress that its strain produced.Like this, prolonged the service life and the time between overhauls(TBO) of coal powder injection pipe, reached and reduce cost the effect of energy-saving and emission-reduction.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to zoomed-in view.
Code name is represented among the figure: the 1-earthenware; The 2-dilatation joint; The 3-flame retardant coating; The 4-heat resisting pipe.
The specific embodiment
Referring to Fig. 1, Fig. 2: the utility model is a kind of cement kiln coal injection pipe of the terminal socket heat resistant and wear resistant damage device at flame retardant coating.This cement kiln coal injection pipe is by heat resisting pipe 4 and be cast in that the flame retardant coating 3 of outer wall of steel pipe is compound to be constituted, and is with earthenware 1 at the flame retardant coating of coal powder injection pipe end, leaves dilatation joint 2 in the middle of earthenware 1 and the flame retardant coating 3, and resistant to elevated temperatures elasticity inserts is arranged in the dilatation joint 2.
The heat resisting pipe 4 of this cement kiln coal injection tube core external diameter φ Dmm (the coal powder injection pipe size decision that D is suitable for by all types of cement kilns), outer wall is cast with flame retardant coating 3.Flame retardant coating 3 adopts mullite pouring material, external diameter φ (D+80 * 2) mm, and thick 80mm with heat resisting pipe 4 integrated poured moulding, avoids high-temperature flue gas directly to contact with steel pipe, can protect coal powder injection pipe steel construction part effectively.
Flame retardant coating 3 ends of this cement kiln coal injection pipe are with the earthenware 1 that heat resistant and wear resistant decreases, and protect the material feeding of watering of flame retardant coating 3 ends, finally reach the purpose of protection coal powder injection tube core body.This earthenware 1 main refractory ceramics that adopts is made internal diameter φ (D+90 * 2) mm, external diameter φ (D+110 * 2) mm, thick 20mm, long 600mm, the about 100Kg of weight.Earthenware 1 is made up of abrasive aggregates and skeleton, density 〉=3.0g/cm3, and intensity can reach 100MPa, be that castable refractory can't be reached, and skeleton is made by heat resisting steel, and combination is good between the aggregate.Have higher mechanical strength and rigidity, can effectively prevent the breakage that impulsive force causes and peel off, have good toughness and shock resistance.Because it is integrated poured that the wear-resistant ceramic sleeve pipe has been taked, and because the coefficient of expansion of ceramic material is low, so its volume stability can not produce the crack, thereby good integrity.Simultaneously, the AL2O3 proportion is more than or equal to 85% in the earthenware aggregate, and the SiC proportion makes its refractoriness up to 1790 ℃ more than or equal to 10%, and resistance to elevated temperatures is very good.Because the wear-resistant ceramic sleeve pipe is an Inorganic Non-metallic Materials, main component is that silicate is close with the earth's lithosphere composition, can not cause soil property to worsen and heavy-metal pollution, can influence ecological environment, and be a kind of product of environmental type.
This earthenware 1 is the annulus column, directly is enclosed within flame retardant coating 3 ends during installation, leaves the thick dilatation joint of 10mm 2 during design, with resistant to elevated temperatures elasticity inserts---and high alumina matter cellucotton is filled.Owing in dilatation joint 2, used the elasticity inserts, make earthenware 1 and flame retardant coating 3 in conjunction with compact, can not slide.Because it is different with the coefficient of expansion of pottery to water material feeding, under different temperatures, can produce strain, the elasticity inserts makes both be difficult for breaking because of the stress that its strain produced.
This cement kiln coal injection pipe does not need often to change and material feeding is watered in repairing, and service life and time between overhauls(TBO) prolong, and has reached to reduce cost the effect of energy-saving and emission-reduction.
Claims (4)
1. cement kiln coal injection pipe, constitute with the flame retardant coating that is cast in outer wall of steel pipe is compound by heat resisting pipe, it is characterized in that: the flame retardant coating at coal powder injection pipe end is with earthenware, leaves dilatation joint in the middle of earthenware and the flame retardant coating, and resistant to elevated temperatures elasticity inserts is arranged in the dilatation joint.
2. cement kiln coal injection pipe according to claim 1 is characterized in that: described earthenware comprises mesh skeleton and aggregate, and skeleton is made by heat resisting steel, and aggregate is the Ceramic Composite material, takes integrated poured mode to be shaped.
3. cement kiln coal injection pipe according to claim 1 is characterized in that: the inserts in the described dilatation joint is a high alumina matter cellucotton inserts.
4. cement kiln coal injection pipe according to claim 1 is characterized in that: described flame retardant coating is the mullite pouring material flame retardant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200830971U CN201462881U (en) | 2009-07-30 | 2009-07-30 | Cement kiln pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200830971U CN201462881U (en) | 2009-07-30 | 2009-07-30 | Cement kiln pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201462881U true CN201462881U (en) | 2010-05-12 |
Family
ID=42390233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200830971U Expired - Lifetime CN201462881U (en) | 2009-07-30 | 2009-07-30 | Cement kiln pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201462881U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265299A (en) * | 2013-04-17 | 2013-08-28 | 无锡远能耐火材料有限公司 | Andalusite corundum gunning mix |
| CN104534499A (en) * | 2014-12-30 | 2015-04-22 | 广东梅雁吉祥水电股份有限公司 | Coal spraying gun with combined high-temperature-resistant structure |
| CN105135875A (en) * | 2015-08-24 | 2015-12-09 | 安徽芜湖海螺建筑安装工程有限责任公司 | Ash deposition prevention construction method for head of rotary cement kiln coal-injection duct |
| CN105622120A (en) * | 2016-01-07 | 2016-06-01 | 无锡远能耐火材料有限公司 | Injection material |
| CN112728531A (en) * | 2020-12-24 | 2021-04-30 | 天津南极星隔热材料有限公司 | A anti structure that explodes for protecting coal injection pipe |
-
2009
- 2009-07-30 CN CN2009200830971U patent/CN201462881U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265299A (en) * | 2013-04-17 | 2013-08-28 | 无锡远能耐火材料有限公司 | Andalusite corundum gunning mix |
| CN104534499A (en) * | 2014-12-30 | 2015-04-22 | 广东梅雁吉祥水电股份有限公司 | Coal spraying gun with combined high-temperature-resistant structure |
| CN104534499B (en) * | 2014-12-30 | 2016-08-17 | 广东梅雁吉祥水电股份有限公司 | Coal powder lance with combination type high-temperature-resistant structure |
| CN105135875A (en) * | 2015-08-24 | 2015-12-09 | 安徽芜湖海螺建筑安装工程有限责任公司 | Ash deposition prevention construction method for head of rotary cement kiln coal-injection duct |
| CN105135875B (en) * | 2015-08-24 | 2017-03-22 | 安徽芜湖海螺建筑安装工程有限责任公司 | Ash deposition prevention construction method for head of rotary cement kiln coal-injection duct |
| CN105622120A (en) * | 2016-01-07 | 2016-06-01 | 无锡远能耐火材料有限公司 | Injection material |
| CN112728531A (en) * | 2020-12-24 | 2021-04-30 | 天津南极星隔热材料有限公司 | A anti structure that explodes for protecting coal injection pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201462881U (en) | Cement kiln pulverized coal burner | |
| CN107032810B (en) | Gunning mix with excellent bonding performance for sintering large flue and preparation method | |
| CN102191066B (en) | Coke dry quenching slope air course supporting brick overhaul construction process | |
| CN103396140B (en) | High-temperature walking beam furnace beam and column insulation lining slag-adhesion-preventing coating | |
| CN101565316A (en) | Preparation method of high-temperature abrasion proof ceramic wafer | |
| CN101353260B (en) | Steel fibre enhanced fire resistant refractory castable of desulphurization hot-metal tank edge | |
| CN104402462B (en) | A kind of stopper and technique thereof producing mineral wool flow control for blast furnace slag | |
| CN102603318B (en) | Long-service-life lining material for whole pipeline of large and medium sized blast furnace hot blast stove | |
| CN104312599A (en) | Protector for water seal tank of dry quenching furnace mouth and manufacturing method of protector | |
| CN102757247A (en) | Silicon nitride bonded silicon carbide thermal-shock-resistant castable | |
| CN104829244A (en) | Tertiary air duct curve prefabricated component for cement kiln | |
| CN205843376U (en) | A kind of new type high temperature ceramic fibre liner structure | |
| CN104829242A (en) | Preparation method of tertiary air duct curve prefabricated component used for cement kiln | |
| CN102617160A (en) | Prefabticated member for coal nozzle of cement kiln and preparation method thereof | |
| CN208803104U (en) | Integrated poured blast furnace crucibe | |
| CN111995405A (en) | High-temperature-resistant heat-preservation permanent lining for steel ladle | |
| CN103922761A (en) | Low-zirconium mullite draft tube brick and preparation method thereof | |
| CN103388055B (en) | Furnace beam and vertical column fire-resistant thermal insulation lining structure of walking beam furnace for heating high-temperature oriented silicon steel and manufacturing method of structure | |
| CN201012926Y (en) | Hole-drilling iron-opening brick | |
| CN104387093A (en) | Flow controlling water gap for production of mineral wool from blast furnace slag and production process thereof | |
| CN206521438U (en) | A kind of circle fluidized-bed gasification furnace builds formula inboard wall of burner hearth by laying bricks or stones | |
| JP5896148B2 (en) | Blast furnace air tuyere | |
| CN202954052U (en) | Novel blast-furnace crucible | |
| CN103214248A (en) | Blast furnace on-line extruding repairing material with high intensity, and good volume and thermal shock stability | |
| CN103033057B (en) | A kind of burner refractory lining body for cement kiln is prefabricated builds block and production method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |