Because position of circular fluid-bed boiler is different its construction technology is different, and technology of different construction of material of fireproof, wear-resisting also differs, boiler of fluid-bed of some homebred 300MW loop is below craft of construction of material of fireproof, wear-resisting:
Of 1. firebox prevent grind material construction craft
If the graph is shown 1 times, the wear-resisting on canal of wall of water-cooling of bottom of firebox of boiler of fluid-bed of the annulus that it is abide is pouring the construction craft of makings, wear-resisting material is in pipe by solder apparently metallic pin is secured. Because this area is area of firebox bottom close look, its stock concentration is very high, mix reach onflow flow is very strong, wear away so very serious. Grind to prevent, the fireproof, wear-resisting that in bottom close look area needs line to have certain ply is pouring makings.
Sketch map 1
Need lays wear-resisting is pouring makings area still has alar wall to be in charge of bottom of type water-cooling wall, equip wall office in pipe especially, because of this area wear away quite serious. If the graph is shown 2 times, to the fireproof material is larger special area inside furnace, need will be fireproof material is statified and pouring.
Sketch map 2
2. answers those who expect unit is in-house to prevent grind material construction craft
Answer those who expect unit is in-house to prevent grind material construction craft, basically be the configuration that adopts wear-resisting material and insulation material to cooperate, have the following kinds of main type:
(Liner of 1) wear-resisting brick + type of heat preservation brick
Expand to solve each calm interval stays have expand seam, the plaster that has 2mm stays to seam between wear-resisting brick and wear-resisting brick namely. And for the quality wear-resisting brick statified deliver steel casing to go up, set the bracket of tall tepid strong steeliness in proper height.
(2) wear-resisting brick 10 heat preservation are pouring makings type
Expand definitely for solution likewise each calm interval stays have expand seam, the plaster that has 2mm also stays to seam between wear-resisting brick and wear-resisting brick namely. Same every removed and certain height sets a brick to hold in the palm statified uninstall. This kind of type agrees with more complex etc does not suit steel casing shape the place of heat preservation brick.
(3) wear-resisting is pouring expect + heat preservation is pouring makings type
If the graph is shown 3 times, for wear-resisting pouring expect + heat preservation is pouring makings type, type of this kind of structure is to press definite pattern to decorate " Y " form the in order to that catch a hammer secures wear-resisting liner, catch hammer and wear-resisting to solve a metal pouring between makings lukewarm bilge difference, catch a hammer to go up thick short for Zhejiang Province of 1mm wanting besmear is green, avoid to heat up voice to issue the expands to differ and cause fireproof material craze as a result of metallic pin and fireproof material, wear-resisting is pouring at the same time makings need to join stainless steel fiber by the scale of 2% , same wear-resisting liner should stay have expand appropriately seam.
Sketch map 3
3. segregator is prevented in-housely grind material construction craft
Because segregator is the crucial part in circular fluid-bed boiler, to segregator of high temperature heat insulation, basically use a few kinds as follows to prevent grind design configuration:
(Liner of 1) wear-resisting brick + type of heat preservation brick
If the graph is shown 4 times, for wear-resisting brick liner + type of heat preservation brick, expand to solve each calm interval stays have expand seam, the plaster that has 2mm stays to seam between wear-resisting brick and wear-resisting brick namely, wear-resisting brick is statified the consolidate pulling a hook that uses solder to go up in steel casing, and for the quality wear-resisting brick statified deliver steel casing to go up, set the bracket of tall tepid strong steeliness in proper height. This kind of type suits large area plane or round dambered surface.
Sketch map 4
(2) wear-resisting brick 10 heat preservation are pouring makings form
If the graph is shown 5 times, for wear-resisting brick 10 heat preservation are pouring makings form, expand to solve likewise each calm interval stays have expand seam, the plaster that has 2mm stays to seam between wear-resisting brick and wear-resisting brick namely, on wear-resisting brick useful the groove that secures at pulling a hook, and for the quality wear-resisting brick statified deliver steel casing to go up, set the bracket of tall tepid strong steeliness in proper height. This kind of form agrees with more complex etc does not suit steel casing shape the place of heat preservation brick.
Sketch map 5
(3) is used fixed those who catch hammer and high temperature fired brick is pouring makings configuration
If the graph is shown 6 times, secure to use those who catch hammer and high temperature fired brick is pouring makings configuration, in wear-resisting firebrick the position of more difficult construction, use wear-resisting commonly fireproof and pouring makings will come true prevent grind a design, as a result of pouring after the conserve process of makings wants to be installed inside segregator, undertake, suffer an environment, heat conditional limitation, pouring the wear-resisting function of makings wants under wear-resisting firebrick. Be in pouring steel fiber is added in makings, still should increase the density that catch a hammer appropriately.
Sketch map 6
(4) is statified pull the configuration that hook a brick
If the graph is shown 7 times, for statified pull the configuration that hook a brick, the cylinder part in segregator and awl paragraph the part all adopts wedge wear-resisting brick and this kind of structure that the brick that pull a hook cooperates, can prevent the desquamation of wear-resisting firebrick effectively, make any wear-resisting firebrick that become independent together fall off likely hardly.
Sketch map 7
(5) pulls hook wedge brick configuration
If the graph is shown 8 times, hook wedge brick to pull configuration, it is the angle that uses wedge to pull hook brick, make two wedge pull the L1 that hooks the planar wedge brick between the brick to all be less than L2, make its emergence difficult, can ensure those who move is safe. The cylinder part that basically is used in segregator and awl paragraph part.
Sketch map 8
4.Fireproof wear-resisting material uses the issue that man-hour should note
(All 1) metals and pouring makings interface should besmear brush bitumen or tangle on paper of fiber of pottery and porcelain.
(2) pulls those who hook a brick to pull the clearance that hook groove to should use plaster cram entirely.
(The plaster between firebrick of 3) all wear-resisting is seamed should <2mm.
(4) the plaster between every wear-resisting firebrick should cram, cannot stay have crack, otherwise the flue gas when boiler moves is met take advantage of a loophole and into, aggravate wear-resisting is fireproof the corrode caustic of liner or flake.
(5) builds wear-resisting firebrick in build by laying bricks or stones when, in principle does not want cut, if want cut truly when, every brick cannot <1/2, when cannot be being satisfied, can adopt at the same time cut two means.
(6) stands by all bricks that push pulled from bottom to top to all have each pull a hook, on all splint that prop up, a brick all should be chief body brick and cooperate to go out expand seam, in order to form the boiler setting body with a stable whole.
(The plaster between all 7) bricks is seamed all answer daub is fireproof plaster, all bricks should the edge seams photograph build by laying bricks or stones, be like bricky horn or end panel happening is broken, good brick changes when crackle.
(Rubber hammer or wooden hammer clap apply when 8) bricklaying, make the brick is united in wedlock cheek by jowl, do not use hammer.
(9) wear-resisting is fireproof and pouring when makings construction, answer to control the amount that add water strictly, add water quantity to be 6〜8% commonly, agitate is needed all , use water quality Ying Weijie is clean, its PH value should be in 6〜8, chloric ionic content should not exceed 150ppm, forbidden use water exceeding bid and the water that have suspension thing.
(10) is pouring the appliance that makings construction process uses must clean, be not polluted, prevent chemical pollution especially.
(11) is pouring expect with application when construction oscillatory machine shapes, brace up pound all , vibrating head is taken out slowly when vibration, lest make pouring makings generation cavity.
(12) is noted makings should check after drawing of patterns pouring the packing of makings, usable hammer clap is attacked, if give out ringing echo, make clear pouring substance is relatively thick. Face of beehive, hemp cannot appear in the meantime. If area of area of beehive, hemp is larger, should certain partly new construction.
(The via checking qualification wear-resisting after 13) model is fireproof and pouring after makings liner passes day of 5〜7 of normal temperature conserve, can undertake drying-out.
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