CN203517865U - Boiler liner of circulating fluidized bed boiler - Google Patents
Boiler liner of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN203517865U CN203517865U CN201320528229.3U CN201320528229U CN203517865U CN 203517865 U CN203517865 U CN 203517865U CN 201320528229 U CN201320528229 U CN 201320528229U CN 203517865 U CN203517865 U CN 203517865U
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- boiler
- layer
- abrasion
- fluidized bed
- circulating fluidized
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Abstract
The utility model discloses a boiler liner of a circulating fluidized bed boiler. The boiler liner comprises an abrasion-resistant castable refractory layer, a heat insulation castable layer and an aluminium silicate fiber board layer; the abrasion-resistant castable refractory layer is provided with a plurality of expansion gaps; the expansion gaps penetrate through the abrasion-resistant castable refractory layer and reach the heat insulation castable layer; a castable refractory precast block is embedded in the portion, making contact with the expansion gaps, of the heat insulation castable layer. According to the structure of the boiler liner of the circulating fluidized bed boiler, the abrasion-resistant castable refractory precast block is additionally arranged behind the expansion gaps, and therefore even if hot fume enters the labyrinth gaps, it is guaranteed that the boiler liner is prevented from burning out because the hot fume can not make contact with heat insulation and heat preservation material by means of blocking of the castable refractory precast block, and operation safety and reliability are enhanced.
Description
Technical field
The utility model relates to a kind of furnace lining for CFBB.
Background technology
Furnace lining is that the adiabatic flue inwall that is laid on CFBB carries out abrasionproof refractory protection; furnace lining material is comprised of three-decker from inside to outside conventionally; ground floor is abrasion-proof and refractory pouring material layer; directly contact with high-temperature flue gas; the 2nd layer is the adiabatic cast bed of material, and the 3rd layer is the spacing flaggy of alumina silicate, the 2nd; 3 layers of Main Function are heat-insulation and heat-preservation, reduce the radiation loss of boiler.
Furnace lining is the indispensable part of CFBB, the quality of its performance and structure directly affects safe, the normally operation of boiler, therefore, reasonably furnace lining structure and good construction, the operation and maintenance of science, be the necessary condition that guarantees the normal operation of boiler unit.The basic role of furnace lining is boiler to carry out abrasionproof refractory protection and adiabatic heat-insulation, thereby improves the economy of boiler efficiency and power plant.Therefore,, when processing furnace lining structure, choosing furnace lining material and lining building, should give one's full attention to a series of basic demands such as furnace lining fire-resistant (mill), thermal insulation, expansion, sealing and appearance protections.While moving due to boiler thermal-state, flue-gas temperature is conventionally at 800 ~ 900 ℃, hardware is heated and can expands, and the swell-shrinking property extreme difference of wearing-proof refractory material, the swell-shrinking property of heat-insulating material is fine, it can be with hardware free wxpansion, and abrasion-proof and refractory pouring material construction cannot free wxpansion after solidifying, and therefore in flame retardant coating, dilatation joint must be set.
The effect of dilatation joint is preset clearance (guaranteeing oneself the expansion of boiler component after being heated), reduces the heat expansion stress of furnace lining material itself and limit crackle in wear-resisting (fire) layer and continue to expand, therefore in casting type wear-resisting (fire) layer, must stay and establish dilatation joint, in heat-insulation layer, can consider not stay dilatation joint.Dilatation joint can be the dilatation joint of 5mm (during reserved dilatation joint, in seam, filling in glued board) by leaving and taking wide every 600mm left and right in width and length (highly) direction, between each dilatation joint, should be staggered in arrangement (being "T"-shaped staggered), reasonably dilatation joint design can guarantee the safe and stable operation of passing by one's way, and guarantees that furnace lining does not come off.
When in boiler running process, furnace lining is built by laying bricks or stones, in seam, the glued board of filling can come off very soon, hot flue gas enters and directly contacts with adiabatic castable along seam, and the high-temperature behavior of adiabatic castable is poor, be easy to burn out, once be burned, will form penetrability crack, cause metal wall to burn red, cause that whole furnace lining material comes off, affect safe operation of the boiler, cause the accidents such as blowing out
As shown in Figure 1, for fear of the generation of the problems referred to above, existing furnace lining is all provided with " Z " shape labyrinth type dilatation joint of bending, increase the resistance that flue gas is scurried into, reduce the possibility of flue gas, but have flue gas, scurried into, caused flue gas directly to contact with adiabatic castable.
Utility model content
For the technical problem of above-mentioned existence, the utility model provides a kind of Circulating Fluidized Bed Boiler Furnace Lining, utilizes castable refractory prefabricated section blocking-up dilatation joint, avoids dilatation joint directly to contact with adiabatic LIFT.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of Circulating Fluidized Bed Boiler Furnace Lining, comprises the abrasion-proof and refractory pouring material layer of laying successively from inside to outside, the adiabatic cast bed of material, alumina silicate fibre flaggy; On described abrasion-proof and refractory pouring material layer, be provided with some dilatation joints; Described dilatation joint runs through abrasion-proof and refractory pouring material layer, the sensible adiabatic cast bed of material; The part that described adiabatic pouring layer contacts with dilatation joint is inlaid with castable refractory prefabricated section.
As a kind of preferred, described dilatation joint is " Z " shape labyrinth type.Increase the resistance that flue gas is scurried into, further reduced the possibility of flue gas.
Usefulness of the present utility model is: the Circulating Fluidized Bed Boiler Furnace Lining with said structure, after dilatation joint, set up a prefabricated abrasion-proof and refractory prefabricated section, even if having hot flue gas scurries into from labyrinth type seam, also because stopping of refractory precast block cannot contact heat-insulating material, thereby guaranteed that furnace lining structure is not burned, increased the security reliability of operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing Circulating Fluidized Bed Boiler Furnace Lining.
Fig. 2 is structural representation of the present utility model.
Mark in figure: 1 abrasion-proof and refractory pouring material layer, the 2 adiabatic cast bed of materials, 3 alumina silicate fibre flaggies, 4 dilatation joints, 5 castable refractory prefabricated sections.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 2:
The utility model comprises the abrasion-proof and refractory pouring material layer 1 of laying successively from inside to outside, the adiabatic cast bed of material 2, alumina silicate fibre flaggy 3; On described abrasion-proof and refractory pouring material layer 1, be provided with some dilatation joints 4; Described dilatation joint 4 runs through abrasion-proof and refractory pouring material layer 1, the sensible adiabatic cast bed of material 2; The part that described adiabatic pouring layer 2 contacts with dilatation joint 4 is inlaid with castable refractory prefabricated section 5.Described dilatation joint is preferably " Z " shape labyrinth type.
In the time of work, even if flue gas can pass through the mazy dilatation joint of " Z " shape, also can thoroughly be blocked by castable refractory prefabricated section 5, avoid flue gas directly to contact with the adiabatic cast bed of material 2.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. a Circulating Fluidized Bed Boiler Furnace Lining, comprises the abrasion-proof and refractory pouring material layer of laying successively from inside to outside, the adiabatic cast bed of material, alumina silicate fibre flaggy; On described abrasion-proof and refractory pouring material layer, be provided with some dilatation joints; Described dilatation joint runs through abrasion-proof and refractory pouring material layer, the sensible adiabatic cast bed of material; It is characterized in that: the part that described adiabatic pouring layer contacts with dilatation joint is inlaid with castable refractory prefabricated section.
2. a kind of Circulating Fluidized Bed Boiler Furnace Lining according to claim 1, is characterized in that: described dilatation joint is " Z " shape labyrinth type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528229.3U CN203517865U (en) | 2013-08-28 | 2013-08-28 | Boiler liner of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528229.3U CN203517865U (en) | 2013-08-28 | 2013-08-28 | Boiler liner of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203517865U true CN203517865U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320528229.3U Expired - Lifetime CN203517865U (en) | 2013-08-28 | 2013-08-28 | Boiler liner of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203517865U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833686A (en) * | 2017-03-14 | 2017-06-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of combined type dry quenched coke oven chute bracket structure |
| CN111795379A (en) * | 2020-08-07 | 2020-10-20 | 无锡华光环保能源集团股份有限公司 | Circulating fluidized bed boiler for burning biomass |
-
2013
- 2013-08-28 CN CN201320528229.3U patent/CN203517865U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833686A (en) * | 2017-03-14 | 2017-06-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of combined type dry quenched coke oven chute bracket structure |
| CN111795379A (en) * | 2020-08-07 | 2020-10-20 | 无锡华光环保能源集团股份有限公司 | Circulating fluidized bed boiler for burning biomass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |