CN101261086A - Trihydrate alumina gas phase fluidization calcining furnace lining - Google Patents
Trihydrate alumina gas phase fluidization calcining furnace lining Download PDFInfo
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- CN101261086A CN101261086A CNA2007100551358A CN200710055135A CN101261086A CN 101261086 A CN101261086 A CN 101261086A CN A2007100551358 A CNA2007100551358 A CN A2007100551358A CN 200710055135 A CN200710055135 A CN 200710055135A CN 101261086 A CN101261086 A CN 101261086A
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Abstract
The invention provides a hydrafil dilute phase fluidizaton roasting furnace brick lining, comprising a furnace body top, an ascending tube wagon top, a furnace body side wall, a conic cylinder, a separator, a gas duct, a central cylinder and a furnace brick lining on a steering cylinder body, wherein, the furnace brick lining mainly consists of a fiber mat layer, a light castable refractory layer and a heavy castable refractory layer, the inside of the furnace brick lining is provided with at least one flexible suspension or points-shaped heat resisting metal clip respectively connecting the furnace body top, the ascending tube wagon top, the furnace body side wall, the conic cylinder, the separator, the gas duct, the central cylinder, the fiber mat layer on the steering cylinder body, the light castable refractory layer, the heavy castable refractory layer and the outside wall into a whole. The hydrafil dilute phase fluidizaton roasting furnace brick lining is provided with various refractory materials comprehensively, solves the problems of the system loss, the common crackle, the shedding of the material at the expanding position and the unreasonable structure caused by the high temperature of the furnace brick lining and realizes the obvious economic benefits of reaching production targets, exceeding the production goal, saving energy, decreasing the energy consumption and prolonging the service life.
Description
Technical field
The present invention relates to the roaster in the Non-ferrous Metallurgy, specifically a kind of furnace lining that is used on the large-scale aluminum hydroxide dilute phase fluidization roasting furnace.
Background technology
The employed large-scale aluminum hydroxide dilute phase fluidization roasting furnace of China is mainly from abroad at present, its main equipment has fluidization flash roaster (FFC), the recirculating fluidized bed roaster (CFBC) of German LURGI, F.L.Smith's gas suspension calcination stove (GSC) (hereinafter to be referred as the GSC stove) of the U.S. aluminium of the U.S., and the equipment of China's use in recent years is in the majority with the gas suspension calcination stove (GSC) that F.L.Smith produces.Introducing large-scale aluminum hydroxide dilute phase fluidization roasting furnace is AI
2O
3Last one critical process of producing, fire proof material of furnace lining structural design, material setting, construction, the comprehensive factor of baker running technology are to implement " kiln " whole theory, carry out the key of furnace lining.
AL (OH)
3Roasting is a kind of based on dilute phase, the calciner of rare concentrated phase combination, the metallurgical furnace, the GSC stove whole system that are a kind of combined type complexity are airtight, carry and transferring heat energy is finished technological requirement by three-dimensional, go wrong and cause the total system operation to depart from even the system oscillation out-of-control condition because individual links also appears in system heat sources and air source less easily.Therefore system is except that having possessed the operation control function of disturbing comprehensive quick tracking reaction, also require the stability of whole system, and furnace lining changes because of wearing and tearing, ablation etc. cause inner cavity size, and leakage will influence production efficiency, production stability and the production maintenance cost of whole system.Because wind, heat, material flow all come from outside the system, can control respectively.The damage of internal system refractory lining just becomes main uncontrollable jamming pattern and can't eliminate.The subject matter that system occurs aspect liner in when operation is: one, system surfaces temperature height, and former designing requirement surface temperature is lower than 100 ℃, and average 150 ℃ of body of heater surface temperature in the actual moving process, system's heat loss is bigger.Two, the increment of the free silica in the middle of the product is bigger, and one of reason is that the relatively poor and surface checking of the anti-wear performance of refractory material comes off.Three, the tapering of the import of whirlwind and body of heater particularly in the middle of the system occurs than multiple cracks, mainly is that structural design shortcoming and the inhomogeneous of material heat expansion are caused.Four, the dilatation joint that refractory material is reserved in the system is more, and the material of selecting for use at the expansion joint (E.J.) place comes off after high temperature and wind, causes material to expose the false.Five, the place of F type hanger brick and sidewall rigidity anchoring top link is adopted on part top, because structure problem is heated inhomogeneous especially and furnace lining generation mechanical structure when changing, more serious quick-fried brick occurs, waters the material feeding obscission.Six, at fourth stage cooling whirlwind and first order preheating whirlwind, because temperature is lower, do not design liner, and be to use the form of outer insulation to reduce heat radiation, whirlwind tube serious wear influences the life-span.Seven, be difficult for repairing during local brick loose or dislocation.In view of China's roaster is introduced the time limit early, the damage focus of furnace lining is " GSC " stove furnace lining, structure of refractory designs congenital existing problems, the proportioning combination of multiple refractory material is not in place, various constructions expansions are reserved with problem, and can subject matter be come system to carry out refractory material with the whole theory of stove liner.
Summary of the invention
The objective of the invention is, be intended to solve above-mentioned in-problem deficiency, a kind of trihydrate alumina gas phase fluidization calcining furnace lining is disclosed, except that implementing optimization of material and import substitution, system loss and common crackle, the expansion place material that causes with the common Yin Gaowen of solution furnace lining comes off, the problem of unreasonable structure.
The present invention is the deficiency that addresses the above problem, the technical scheme that is adopted is: a kind of trihydrate alumina gas phase fluidization calcining furnace lining, comprise the furnace body top, the tedge oblique top, sidewall of the furnace body, the awl tube, separator, flue, central tube, turn to the furnace lining on the cylindrical shell, furnace lining is mainly by fibre felt layer, the light weight castable refractory layer, the heavy refractory casting bed of material is formed, the flexibility that is provided with at least one in the furnace lining layer is hung or point-like heating resisting metal anchoring piece, and its flexibility is hung or point-like heating resisting metal anchoring piece pushes up furnace body respectively, the tedge oblique top, sidewall of the furnace body, the awl tube, separator, flue, central tube, turn to the fibre felt layer on the cylindrical shell, the light weight castable refractory layer, the heavy refractory casting bed of material and outer wall connect into an integral body.
The present invention, comprise that being provided with flexibility in the furnace lining layer of furnace body top, tedge oblique top hangs, its flexibility hangs respectively that fixedly girder steel and shell connect into an integral body with fibre felt layer, light weight castable refractory layer, the heavy refractory casting bed of material and the furnace roof of furnace body top, tedge oblique top.
The present invention, comprise sidewall of the furnace body, awl tube, separator, flue, central tube, turn to and be provided with point-like heating resisting metal anchoring piece in the furnace lining layer on the cylindrical shell, its point-like heating resisting metal anchoring piece respectively with sidewall of the furnace body, bore tube, separator, flue, central tube, turn to fibre felt layer, light weight castable refractory layer, the heavy refractory casting bed of material and outer wall on the cylindrical shell to connect into an integral body.
Flexibility of the present invention is hung, by heat-resistance stainless steel muscle suspender belt with hang anchored brick and form.Form flexible hang hang anchored brick, its top is provided with hangs the anchored brick boss.Form the flexible heat-resistance stainless steel muscle suspender belt of hanging, the lower end is provided with U-lag, its with hang the anchored brick boss and be connected.
Point-like heating resisting metal anchoring piece of the present invention is Y shape, and the V-arrangement of front end is connected with castable refractory, and the other end is connected with outer wall.
Central tube of the present invention, turn to, also be provided with on the cylindrical shell, cone intermediate zone in length and breadth the anchor ear beam and reinforce.
The cylindrical shell that turns to of the present invention, the heavy refractory casting bed of material in its corner both sides≤100cm scope, 〉=turn to 0.5 times thickness of the heavy refractory casting bed of material of cylindrical shell craspedodrome place.
Separator of the present invention, sidewall of the furnace body, flue, the collar tie beam of anchor ear in length and breadth that also uses heat-resistance stainless steel to do skeleton carries out integral reinforcing to furnace lining.
The position that tedge oblique top of the present invention and high temperature gas flow antikinesis are concentrated also is provided with furnace lining and strengthens intermediate zone, 0 of the thickness of reinforcement intermediate zone 〉=normal lining thickness.3 times of thickness.
Advantage of the present invention is:
1, furnace lining of the present invention is mainly by fibre felt layer, the light weight castable refractory layer, the heavy refractory casting bed of material is formed, the flexibility that is provided with at least one in the furnace lining layer is hung or point-like heating resisting metal anchoring piece, its flexibility is hung or point-like heating resisting metal anchoring piece pushes up furnace body respectively, the tedge oblique top, sidewall of the furnace body, the awl tube, separator, flue, central tube, turn to the fibre felt layer on the cylindrical shell, the light weight castable refractory layer, the heavy refractory casting bed of material and outer wall connect into an integral body, substitute original furnace lining flexible heat-insulating layer+work pouring layer, thoroughly solved AL-SI fibre pouring baker, the common fault of aquation.
2, central tube of the present invention, turn to, on the cylindrical shell, awl tube except that adopting technical solution of the present invention, also be provided with in length and breadth the anchor ear beam and reinforce, its impact resistance is strengthened greatly.
3, separator of the present invention, sidewall of the furnace body, flue are except that adopting technical solution of the present invention, and the collar tie beam of anchor ear in length and breadth that also uses heat-resistance stainless steel to do skeleton carries out integral reinforcing to furnace lining, has improved service life greatly.
4, the position that tedge alms bowl of the present invention pushes up and the high temperature gas flow antikinesis is concentrated also is provided with the furnace lining intermediate zone except that adopting technical solution of the present invention, and the reinforcement of furnace lining intermediate zone has improved the impact of high temperature gas flow antikinesis.
5, sidewall of the furnace body of the present invention adopts the high temperature alloy metal anchorage, and the fixedly anchor force of furnace sidewall is become the compound furnace wall that tractive force is formed, but the motion of the expansion of adaptation material and furnace wall.
6, the material feeding of watering of the present invention's use is unsetting castable refractory, promptly antiacid caustic corrosion abrasion-proof and refractory pouring material and light weight castable refractory, and market is on sale, has substituted DCL-40, DCL-45, DCL-50, DCL-55 import material.Antiacid alkali corrodes abrasion-proof and refractory and improves greatly.
7, the comprehensive compatibility of the present invention is provided with the variety classes refractory material, can on GSC, FFC, CFBC stove, build novel furnace lining, solved that system loss and common crackle, the expansion place material that the common Yin Gaowen of furnace lining causes comes off, the problem of unreasonable structure, can realize reaching product, overfulfil a production target, energy-conservation, consumption reduction, long service life distinct economic and social benefit.
Description of drawings
Fig. 1 is that flexibility of the present invention is hung schematic diagram;
Fig. 2 is a point-like heating resisting metal anchoring piece schematic diagram of the present invention;
Fig. 3 is the V-arrangement schematic diagram of point-like heating resisting metal anchoring piece front end of the present invention;
Fig. 4 is that the flexible schematic diagram of hanging is adopted on furnace body of the present invention top;
Fig. 5 is that flexibility of the present invention adds the rigidity heat-insulation layer and waters the furnace wall schematic diagram that material feeding is formed;
Fig. 6 is that cone intermediate zone of the present invention is provided with horizontal anchor ear beam schematic diagram;
Fig. 7 is that flue gas outlet reinforcement intermediate zone of the present invention is hung the lining schematic diagram;
Fig. 8 is that flue gas of the present invention outlet is strengthened intermediate zone and hung A-A in the lining schematic diagram to enlarged diagram.
Mark among the figure: 1, flexibility is hung; 2, heat-resistance stainless steel muscle suspender belt; 3, hang anchored brick; 4, hang the anchored brick boss; 5, point-like heating resisting metal anchoring piece; 6, V-arrangement; 7, fixing girder steel; 8, fibrofelt; 9, light weight castable refractory; 10, heavy castable refractory; 11, the furnace body top adopts flexibility to hang; 12, sidewall wall; 13, sidewall furnace shell; 14, central tube furnace shell; 15, point-like heating resisting metal anchoring piece; 16, water material feeding; 17, central tube transversely strengthening anchor ear beam; 18, intermediate zone transversely strengthening anchor ear beam; 19, turn to; 20, turn to furnace shell; 21, light weight castable refractory; 22, point-like heating resisting metal anchoring piece; 23, water material feeding; 24, water material feeding.
The specific embodiment
As Fig. 4, shown in Figure 5, a kind of trihydrate alumina gas phase fluidization calcining furnace lining of the present invention, mainly contain fibrofelt 8, light weight castable refractory 9, heavy castable refractory 10 formations, on furnace roof or furnace wall according to different environmental conditions, be respectively arranged with flexibility and hang 1 or point-like heating resisting metal anchoring piece 5, furnace lining use flexibility hang 1 or point-like heating resisting metal anchoring piece 5 fibrofelt 8, light weight castable refractory 9, heavy castable refractory 10 are connected into an integral body with furnace roof or furnace wall.
As shown in Figure 1, flexibility hangs 1 by heat-resistance stainless steel muscle suspender belt 2 with hang anchored brick 3 and form, be provided with and hang anchored brick boss 4 hanging upper end on the anchored brick 3, lower end at heat-resistance stainless steel muscle suspender belt 2 is provided with U-lag, hanging anchored brick boss 4 is connected with the U-lag that lower end at heat-resistance stainless steel muscle suspender belt 2 is provided with, the other end of heat-resistance stainless steel muscle suspender belt 2 is connected with furnace roof, and it has formed flexibility and has hung.
As shown in Figure 2, point-like heating resisting metal anchoring piece 5 is a Y shape, and the V-arrangement 6 of one end is arranged on and waters in the material feeding, and the other end is arranged on the furnace wall, is connected the fibrofelt on the furnace lining 8, light weight castable refractory 9, heavy castable refractory 10 as a whole with the furnace wall.
As shown in Figure 6, also be provided with transversely strengthening anchor ear beam 5 on the cone intermediate zone, it has increased the intensity of intermediate zone.
As Fig. 7, shown in Figure 8, located to strengthen the lining thickness of intermediate zone in flue gas outlet etc., the thickness of the unsetting castable refractory of its steering angle both sides is greater than 0.3 times thickness of the thickness of normal unsetting castable refractory.
Embodiment 1
Adopt Denmark Smith 1400T/D AL (OH)
3Dilute phase fluidization roasting furnace.
Its newly-built furnace lining structure is designed to: cooling cyclone CO1, CO2, CO3, main roaster PO4, hot blast separate whirlwind tube PO3, cyclone preheater PO2, tedge oblique top and furnace body top and are designed to flexibility and hang 1 and add castable refractory, keep furnace roof stable, PO3 top flue is partly reinforced with the high temperature skeleton;
The rigidity thrust anchored brick of sidewall of the furnace body is changed into point-like heating resisting metal anchoring piece 5, and the fixedly anchor force that becomes sidewall adapts to furnace wall expansion change direction into traction force;
Lax position and heat-resisting alloy anchoring piece critical, that furnace lining is carried out at the turnover position are reinforced between all structure sheafs of GSC stove;
The tremie pipe of all wear-resisting furnace linings of GSC stove adds the operation of anchoring piece systems stabilisation;
Main roaster PO4 and hot blast separator PO3 intermediate zone adopt the flexible combination furnace lining, adapt to the huge tear edge that produces on the technology operation furnace structure.Cooling cyclone CO1, cyclone preheater PO2 etc. have the core separator central tube to link to each other with the edge to adopt flexible reinforcement stable center tube;
Cooling cyclone CO1, CO2, CO3, main roaster PO4, hot blast separator PO3, separation preheater PO2, lower cone are all established anchor ear beam reinforcing in length and breadth and the cast Lip river serial LH-1500 of China antiacid (alkali) the corrosion abrasion-proof and refractory pouring material that heat resisting steel is anchoring piece, and cone installs manhole additional;
All GSC furnace lining constructions are the sandwich construction of flexible heat-insulating+rigidity insulation+working lining structure, solve this import kiln common fault of Al-Si fiber aquation;
Replace all " frame expands greater than the 1cm precompensation around the rigid fiber felt " according to refractory material character accurate Calculation expansion clearance to conceal the type flexible expansion, prevented that peeling off, fall piece along dilatation joint after furnace lining from putting into operation runs the problem that material burns furnace shell.
Claims (11)
1, a kind of trihydrate alumina gas phase fluidization calcining furnace lining, comprise the furnace body top, the tedge oblique top, sidewall of the furnace body, the awl tube, separator, flue, central tube, turn to the furnace lining on the cylindrical shell, furnace lining is mainly by fibrofelt (8) layer, light weight castable refractory (9) layer, heavy castable refractory (10) layer is formed, it is characterized in that: the flexibility that is provided with at least one in the furnace lining layer is hung (1) or point-like heating resisting metal anchoring piece (5), and its flexibility hangs (1) or point-like heating resisting metal anchoring piece (5) pushes up furnace body respectively, the tedge oblique top, sidewall of the furnace body, the awl tube, separator, flue, central tube, turn to fibrofelt (8) layer on the cylindrical shell, light weight castable refractory (9) layer, heavy castable refractory (10) layer connects into an integral body with outer wall.
2, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1, it is characterized in that: comprise that being provided with flexibility in the furnace lining layer of furnace body top, tedge oblique top hangs (1), its flexibility is hung (1) and respectively fibrofelt (8) layer, light weight castable refractory (9) layer, heavy castable refractory (10) layer of furnace body top, tedge oblique top is connected into an integral body with outer wall.
3, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1, it is characterized in that: comprise sidewall of the furnace body, awl tube, separator, flue, central tube, turn to and be provided with point-like heating resisting metal anchoring piece (5) in the furnace lining layer on the cylindrical shell, its point-like heating resisting metal anchoring piece (5) respectively with sidewall of the furnace body, awl tube, separator, flue, central tube, turn to fibrofelt (8) layer on the cylindrical shell, light weight castable refractory (9) layer, heavy castable refractory (10) layer and outer wall to connect into an integral body.
4, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1, it is characterized in that: described flexibility is hung (1), by heat-resistance stainless steel muscle suspender belt (2) with hang anchored brick (3) and form.
5, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1, it is characterized in that: described flexibility is hung (1), forms flexibility and hangs its top of anchored brick (3) of hanging of (1) and be provided with and hang anchored brick boss (4).
6, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1, it is characterized in that: described flexibility is hung (1), form flexibility and hang the heat-resistance stainless steel muscle suspender belt (2) of (1), the lower end is provided with U-lag, and it is connected with the anchored brick boss (4) of hanging on hanging anchored brick (3).
7, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1 is characterized in that: described point-like heating resisting metal anchoring piece (5), be Y shape, and the V-arrangement of front end (6) is connected with castable refractory, and the other end is connected with outer wall.
8, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1 is characterized in that: described central tube, turn to, cylindrical shell, cone excessively be with and also be provided with in length and breadth anchor ear beam (17) and reinforce.
9, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1, it is characterized in that: the described cylindrical shell that turns to, heavy castable refractory (23) layer in its corner (19) both sides≤100cm scope is greater than 0 of heavy castable refractory (24) layer that turns to cylindrical shell craspedodrome place.5 times thickness.
10, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1 is characterized in that: described separator, sidewall of the furnace body, flue, the collar tie beam of anchor ear in length and breadth that also uses heat-resistance stainless steel to do skeleton carries out integral reinforcing to furnace lining.
11, a kind of trihydrate alumina gas phase fluidization calcining furnace lining according to claim 1, it is characterized in that: the position that described tedge oblique top and high temperature gas flow antikinesis are concentrated also is provided with furnace lining and strengthens intermediate zone (18), strengthens the 0.3 times thickness of the thickness of intermediate zone (18) greater than normal lining thickness.
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Assignee: Powder technology special refractories Co., Ltd of Lip river, Luoyang City China Assignor: Li Chaoxia Contract record no.: 2011990000834 Denomination of invention: Trihydrate alumina gas phase fluidization calcining furnace lining Granted publication date: 20101006 License type: Exclusive License Open date: 20080910 Record date: 20110829 |