CN201203355Y - Heat radiation reutilization apparatus of cement rotary kiln barrel - Google Patents
Heat radiation reutilization apparatus of cement rotary kiln barrel Download PDFInfo
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- CN201203355Y CN201203355Y CNU2008200827993U CN200820082799U CN201203355Y CN 201203355 Y CN201203355 Y CN 201203355Y CN U2008200827993 U CNU2008200827993 U CN U2008200827993U CN 200820082799 U CN200820082799 U CN 200820082799U CN 201203355 Y CN201203355 Y CN 201203355Y
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Abstract
The utility model discloses a dispersed heat reclamation utilization device of cement rotary kiln shell, which comprises a plurality of heat exchange covers arranged segmentally arranged on the rotary kiln shell, a heat preservation layer is arranged on the outer surface of the heat exchange cover, a sealing device is arranged between both ends of the heat exchange cover and the rotary kiln shell, the inner surface of the heat exchange cover and the outer surface of the rotary kiln shell form a sealed heat exchange cavity by the sealing device, the bottom of the heat exchange cover is provided with an inlet communicated with the heat exchange cavity, the top of the heat exchange cover is provided with an outlet communicated with the heat exchange cavity, the bottom of the heat exchange cover is connected with a slide device to realize axial displacement, the sealing device comprises a fixed base on the outer surface of the rotary kiln shell, a movable sealing ring is arranged at one side of the fixed base, the bottom of the movable sealing ring is hermetically connected with the rotary kiln shell by a heat-resistant rubber I, an automatic- advancing static sealing ring is arranged between the movable sealing ring and the end face of heat exchange cover, the top of the automatic- advancing static sealing ring is connected hermetically with the end face of the heat exchange cover by a heat-resistant rubber II, the automatic-advancing static sealing ring is connected with an elastic static sealing ring, a sealing packing is arranged between the elastic static sealing ring and the movable sealing ring.
Description
Technical field
The utility model relates to the recycle device of a kind of cement burning with the rotary kiln barrel radiation heat.
Background technology
As shown in Figure 1 and Figure 2, existing cement burning cylinder of rotary kiln internal temperature height, although adopt various heat-insulation and heat-preservation measures, be refractory brick 13 and kliner coating 14 at present, but the cylinder of rotary kiln surface temperature is still higher, and the cylinder of rotary kiln steel plate should bear the sound load that cylinder of rotary kiln 1 own wt, refractory brick 13 weight and material 15 cause under the higher temperature of cylinder of rotary kiln surface, transmit rotation torque again, operating mode is comparatively abominable.Because cylinder of rotary kiln mostly adopts the manufacturing of Q235 steel plate to form, therefore the cylinder of rotary kiln surface temperature must be controlled in the allowable temperature scope, generally can not be higher than 400 ℃, therefore control the cylinder of rotary kiln surface temperature except provision for thermal insulations such as reinforcement refractory brick, also need make its outer surface energy efficiently radiates heat.The cylinder of rotary kiln of cement production enterprise relies on natural air cooled heat radiation at present, radiation loss is serious thus: be example with the precalciner kiln, the cylinder of rotary kiln average surface temperature is about 270 ℃, the radiation loss that brings thus accounts for more than 5% of clinker hear rate, with more representational 2500t/d precalciner kiln is example, 300 day, ton heat consumption of clinker 770kcal/t.cl, rotary kiln barrel radiation 5% that effectively turn round per year calculate, and the radiation loss in 1 year is 2.89 * 10
7Kcal amounts to 4130 tons of standard coals.The higher part of Kiln Shell Temperature also needs to use blower fan air blast cooling, expend a part of electric energy again, be example still with the 2500t/d precalciner kiln, about year power consumption 250,000 kwh, in heat-energy losses, also need consume electric power, therefore from long-term interest, the manufacture of cement industry is recycled the cylinder of rotary kiln distribute heat, and the research of saving energy and reduce the cost is necessary.
On the other hand, because the influence that interior each section high temperature gas flow variations in temperature of cement rotary kiln and material distribute adds the variation of refractory brick, kliner coating in the rotary kiln, the cement rotary kiln barrel temperature is uneven distribution vertically, and range of temperature is between 120～400 ℃.When serious situation such as brick occurring falling, the cylinder of rotary kiln surface can local overheating, is commonly called as " hot spot ".
Up to the present, cement industry does not also utilize method preferably to rotary kiln barrel radiation.Some cement production enterprises of the domestic north are useful on the utilization that produces hot water heating.Method is that (clinkering zone or intermediate zone are by the kiln hood position) installs semi-enclosed heat shield (totally-enclosed meeting brings kiln cylinder body overtemperature problem) at the higher position of kiln cylinder body surface temperature, in this heat shield, install the heat exchanging water pipe towards the rotary kiln side, water flowing in water pipe, the radiation heat transfer of the kiln cylinder body surface heat exchanging water pipe that the dependence temperature is higher is obtained hot water and is used for heating, but the thermal efficiency is very low.Do not see the external cement industry report that heat radiation effectively utilizes to rotary kiln up till now yet.
China national Department of Intellectual Property discloses the invention of a kind of " method and the device of dry method cement rotary kiln surface UTILIZATION OF VESIDUAL HEAT IN " by name on May 23rd, 2007, publication number is CN1967120, it can carry out certain utilization to the rotary kiln surface waste heat, but has the following disadvantages:
According to description of the invention, residual heat using device constitutes by being enclosed in the sealed hollow shell that the cylinder of rotary kiln outer surface plays evaporimeter and superheater effect, between sealing hollow shell and rotary kiln shell (kiln cylinder body) a little space is arranged.Shown in the accompanying drawing, the sealed hollow shell is enclosed with the heat-insulation layer that one deck plays heat-blocking action towards atmospheric side to specifications.From the heat transfer theory analysis, radiation heat transfer between cylinder of rotary kiln and the sealed hollow shell (heat-obtaining device) can calculate by the radiation heat transfer between the interior involucrum: the average surface temperature of cylinder of rotary kiln is got 270 ℃, the average surface temperature of sealed hollow shell internal layer (towards the rotary kiln side) is got 120 ℃ (being difficult to produce water vapour when being lower than 120 ℃), considering simultaneously adopts various measures improves surperficial blackness, under more favourable situation, radiation heat transfer efficient is about 30%; Considers the conduction heat exchange again, between cylinder of rotary kiln and the hollow shell the air gap is arranged, and air wherein is static that because the thermal conductivity of air is low, thereby the efficient of conduction heat exchange is very low.
By above analytical calculation, the heat exchange efficiency of this residual heat using device is low, the more important thing is that (otherwise heat radiation is serious because the sealed hollow shell is surrounded by heat-insulation layer outward, more steam is given birth in difficult labour), under the low situation of heat exchange efficiency, influence the heat radiation of cylinder of rotary kiln, must cause the overtemperature of kiln cylinder body, this is that rotary kiln device does not allow situation about occurring.Further, according to description of the invention, this use device can not detect the cylinder of rotary kiln surface temperature that is wrapped in hollow shell inside, and then can not monitor working conditions change in the kiln (as main kliner coating length etc.) indirectly, more can't find rotary kiln " hot spot " accident that reasons such as " falling brick " causes, so objectively there are many deficiencies in this residual heat using device.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of cement rotary kiln barrel radiation recycle device, can effectively solve present cement industry to the inefficient problem of the UTILIZATION OF VESIDUAL HEAT IN of cylinder of rotary kiln.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of cement rotary kiln barrel radiation recycle device, comprise some heat exchange covers that segmentation is provided with on the cylinder of rotary kiln, the heat exchange cover outer surface is provided with heat-insulation layer, it is characterized in that: be provided with sealing device between heat exchange cover two ends and the cylinder of rotary kiln, heat exchange cover inner surface and cylinder of rotary kiln outer surface form the heat exchanging chamber of sealing by sealing device, heat exchange cover bottom is provided with the import that communicates with heat exchanging chamber, heat exchange cover top is provided with the outlet that communicates with heat exchanging chamber, and heat exchange cover bottom connects carriage and realizes the axial displacement of heat exchange cover.
Further, sealing device comprises the holder on the cylinder of rotary kiln outer surface, holder one side is provided with rotary packing ring, rotary packing ring bottom is by the temperature resistant rubber I cylinder of rotary kiln that is tightly connected, be provided with automatic propelling stationary seal ring between rotary packing ring and the heat exchange cover end face, automatically advance the stationary seal ring top by the temperature resistant rubber II heat exchange cover end face that is tightly connected, advance stationary seal ring to connect the elasticity stationary seal ring automatically, be provided with sealed packing between elasticity stationary seal ring and the rotary packing ring.
Further, automatically two bolting of horizontal distribution were on heat exchange cover end face about the propelling stationary seal ring passed through, automatically advance between stationary seal ring and the bolt and be provided with sliding sleeve, the sliding sleeve width is greater than the stationary seal ring width, and the sliding sleeve both sides are fixed on the bolt by adjusting nut.
Further, the elasticity stationary seal ring is two circular-arc projectioies that distribute up and down, and projection is provided with groove I, and rotary packing ring is provided with the groove II corresponding with groove I, and sealed packing is sandwiched between groove I and the groove II.
Further, carriage comprises the pulley that is arranged on heat exchange cover bottom and is supported in ground fixed mount, and fixed mount is provided with the slide rail corresponding with pulley, and the fixed mount both sides are provided with the limited block of pulley by bolt.
Further, the heat exchange cover is provided with and the outer corresponding thermometric window of automatic scan temperature measurer direction of cylinder of rotary kiln.
Further, the thermometric window connects automatic stay-furring tool, automatically stay-furring tool comprises movable stand, the movable stand bottom connects screw mandrel and moves horizontally, the movable stand top connects the positioning and guiding bar, movable stand one side connects window cleaner, and window cleaner props up the thermometric window by the spring that is located in the movable stand, and the window cleaner both sides connect retainer spring.
The utility model has following effect owing to adopted technique scheme:
When adopting water as heat transferring medium, directly be full of water on the cylinder of rotary kiln surface or steam water interface carries out heat exchange to cylinder of rotary kiln, utilize the rotation of rotary kiln and be installed in helical blade on the cylinder of rotary kiln, add strong convection and flow-disturbing effect, increase heat exchange area, in the case, water to the cylinder of rotary kiln surface mainly with the heat exchange of phase-change heat-exchange mode, convection current simultaneously is effective with the conduction heat exchange, the heat exchange efficiency height, except heat exchange cover outer surface thermal insulation layer and the sealed at both ends radiation loss that causes, can all absorb the cylinder of rotary kiln surface radiating, estimate that the heat exchange efficiency on cylinder of rotary kiln surface can reach more than 90% in its heat exchanging cover, the cooling effect on cylinder of rotary kiln surface is better than the natural air cooled mode of former dependence.At the evaporator section position that produces low temperature and low pressure steam, the cylinder of rotary kiln surface temperature can be lower than 200 ℃, cylinder of rotary kiln surface temperature at steam superheating section position can be controlled in 300 ℃, favourable to the cylinder of rotary kiln armor plate strength, can exempt simultaneously the way of using the blower fan air blast cooling because of former natural air cooled weak effect, saves energy.And can directly produce low temperature and low pressure steam and be used for cement plant cogeneration as filling, the efficiency of utilization height.Through estimation, about 70% cylinder of rotary kiln surface radiating can be converted into electric energy, is example with the 2500t/d precalciner kiln still, and can generate electricity 700 * 10 every year
4About kwh, save about 2800 tons/year of standard coal.
The utility model carries out the principle design at the cement rotary kiln operating mode, and the cylinder of rotary kiln surface temperature can be effectively controlled and be lower than the surface temperature under original natural air cooled situation in the heat exchange cover; The heat exchange cover can be followed kiln " up-downgoing " slippage and limited block is arranged, the sealed packing fast changeable, the heat exchange cover is provided with the thermometric window that the cylinder of rotary kiln surface temperature measurement is used, rotary packing ring is installed on the cylinder of rotary kiln in " the flexible connection " mode, solved the constraint of when being welded on the cylinder of rotary kiln cylinder of rotary kiln nominal situation being out of shape, thereby avoided to cause and easily fallen refractory brick and the concentrated problem of cylinder of rotary kiln " necking down " stress in the kiln, cylinder of rotary kiln in the superheat section heat exchanging chamber is provided with automatic snaking device, evaporator section is difficult for incrustation, in addition by the installing of segmentation on cylinder of rotary kiln heat exchange cover, avoided the wheel band of cylinder of rotary kiln, measures such as support roller have no adverse effects to cement rotary kiln equipment and operation behind installing heat exchange cover.Heat exchanging chamber is interior except making water as the heat transferring medium, also can use other heat transferring medium of heat conduction wet goods, when using conduction oil, to cylinder of rotary kiln surface direct heat transfer, the deep fat after the heat exchange can use steam generator production steam to be used for generating or directly be used for heating etc. for heat exchanger by forced circulation.
To sum up, of the present utility model practical, energy-conservation obvious with economic benefit.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is existing cement rotary kiln barrel structural representation;
Fig. 2 is an A-A sectional drawing among Fig. 1;
Fig. 3 is the structural representation of a kind of cement rotary kiln barrel radiation recycle device of the utility model;
Fig. 4 is a B-B echelon sectional view among Fig. 3;
Fig. 5 is an I place structure enlarged diagram among Fig. 3;
Fig. 6 is an II place structure enlarged diagram among Fig. 3;
Fig. 7 is an III place structure enlarged diagram among Fig. 4;
Fig. 8 is the fundamental diagram of automatic stay-furring tool in the utility model;
Fig. 9 is the workflow diagram of embodiment one in the utility model;
Figure 10 is the cutaway view of cylinder of rotary kiln among the utility model embodiment two;
Figure 11 is the workflow diagram of embodiment two in the utility model.
The specific embodiment
Embodiment one:
With demineralized water or demineralized water as heat transferring medium, by directly producing the low-temp low-pressure that has certain degree of superheat (0.2～0.3Mpa, 150～170 ℃) steam behind the heat exchange cover, the filling that this steam is used as the cement plant pure low-temperature cogeneration enters the steam turbine filling mouth, and the pushing turbine rotation also drives generator for electricity generation; Or all produce the low-temp low-pressure saturated vapor, this saturated vapor enters cement plant pure low-temperature cogeneration boiler low-temperature low-pressure steam section, is used for generating again behind boiler overheating.Producing low temperature and low pressure steam in heat exchanging chamber, is that cylinder of rotary kiln intensity is allowed to bear.
The cement rotary kiln barrel radiation recycle device comprises the heat exchange cover 2 that segmentation is provided with on the cylinder of rotary kiln 1, after two semicircle cylindrical shells that heat exchange cover 2 is made by steel plate connect by flange cylinder of rotary kiln 1 is encased.Heat exchange cover 2 outer surfaces are provided with heat-insulation layer 21, scatter and disappear to prevent heat.Be provided with sealing device between heat exchange cover 2 two ends and the cylinder of rotary kiln 1, heat exchange cover 2 inner surfaces and cylinder of rotary kiln 1 outer surface form the heat exchanging chamber 3 that seals by sealing device, are full of heat transferring medium in the heat exchanging chamber 3, and heat transferring medium adopts demineralized water or demineralized water.Cylinder of rotary kiln 1 outer surface in the heat exchanging chamber 3 is welded with helical blade 18, can increase heat exchange area, utilizes the rotation of cylinder of rotary kiln 1 to produce the flow-disturbing effect by the heat transferring medium in the helical blade 18 heat exchanging chambeies 3 simultaneously, strengthens the heat exchange effect.
As shown in Figure 9, heat exchange cover 2 comprises 1#, 2#, 3#, 4#, 5# and 6# heat exchange cover.6# heat exchange cover is positioned at cylinder of rotary kiln afterbody 12, is used for feed-water preheating; 1#, 2#, 3# heat exchange cover are positioned at cylinder of rotary kiln 1 clinkering zone, and 5# heat exchange cover is positioned at cylinder of rotary kiln 1 intermediate zone, and wherein 1# heat exchange cover position contains the salband of a small amount of cylinder of rotary kiln 1, and these four heat exchange covers are made evaporimeter and used, and are used to produce steam; 4# heat exchange cover is positioned at cylinder of rotary kiln 1 intermediate zone, uses as superheater.
As Fig. 3 and shown in Figure 5, be provided with sealing device between heat exchange cover 2 two ends and the cylinder of rotary kiln 1, sealing device comprises the holder 47 that is welded on cylinder of rotary kiln 1 outer surface, holder 47 1 sides are provided with rotary packing ring 41, rotary packing ring 41 is made by steel plate, rotary packing ring 41 bottoms are by the temperature resistant rubber I42 cylinder of rotary kiln 1 that is tightly connected, can solve the sealing between rotary packing ring 41 and the cylinder of rotary kiln 1, when when cylinder of rotary kiln 1 distortion such as " losing circle " taking place under operating mode simultaneously, allow rotary packing ring 41 to produce relative microdisplacement with cylinder of rotary kiln 1.Be provided with automatic propelling stationary seal ring 44 between rotary packing ring 41 and the heat exchange cover end face 24, automatically advance stationary seal ring 44 to make by steel plate, automatically advance stationary seal ring 44 tops by the temperature resistant rubber II45 heat exchange cover end face 24 that is tightly connected, can solve the sealing between automatic propelling stationary seal ring 44 and the heat exchange cover end face 24, and temperature resistant rubber II45 can axially produce along cylinder of rotary kiln 1 and stretch when advancing stationary seal ring 44 to move automatically, guarantees sealing effectiveness.Automatically advance stationary seal ring 44 to be fixed on the heat exchange cover end face 24 by two bolts 441 of horizontal distribution up and down, automatically advance between stationary seal ring 44 and the bolt 441 and be provided with sliding sleeve 442, sliding sleeve 442 width are greater than advancing stationary seal ring 44 width automatically, sliding sleeve 442 both sides are fixed on the bolt 441 by adjusting nut 444, simultaneously the bolt 441 of top is further fixing by pull bar 443, advances stationary seal ring 44 to slide on can adjusting sliding sleeve 442 between the nut 444 in both sides automatically.When sealed packing 43 wearing and tearing, because therefore the pressure of heat transferring medium promote to advance automatically stationary seal ring 44 to move to rotary packing ring 41 directions greater than external atmosphere pressure in the heat exchanging chamber 3, the wearing and tearing of compensation sealing packing 43 keep seal clearance constant.Automatically advance stationary seal ring 44 to be provided with elasticity stationary seal ring 46, be provided with sealed packing 43 between elasticity stationary seal ring 46 and the rotary packing ring 41.Elasticity stationary seal ring 46 is made by temperature resistant rubber, and elasticity stationary seal ring 46 is two circular-arc projectioies that distribute up and down, is equipped with groove I on the projection, and rotary packing ring is provided with the groove II48 corresponding with groove I, and sealed packing 43 is sandwiched between groove I and the groove II48.Be filled with hydraulic oil in the elasticity stationary seal ring 46, its oil pressure is higher than the pressure of heat transferring medium in the heat exchanging chamber 3, under operating mode, when rotary packing ring 41 causes micro-deformation because of cylinder of rotary kiln 1 various distortion, elasticity stationary seal ring 46 can be followed its micro-deformation, guarantees the sealing function of sealed packing 43 thus.On-the-spot turning is carried out in the rotation (about linear velocity 0.7m/s) that the processing and utilization rotary packing ring 41 of groove II48 is installed the back cylinder of rotary kiln makes that rotary packing ring 41 end faces are smooth, car goes out annular ditch groove II48, simultaneously to giving car light with the contact-making surface of sealed packing 43 in the groove II48 and polishing is handled.When sealed packing 43 serious wear,, reduce influence to the kiln running rate as long as the hydraulic oil in the release elasticity stationary seal ring 46 can be changed sealed packing 43 fast.
As Fig. 3 and shown in Figure 6, heat exchange cover 2 bottoms connect carriage, carriage comprises four pulleys 51 that are arranged on heat exchange cover 2 bottoms and is supported in ground four fixed mounts 52, fixed mount 52 is provided with the slide rail 53 corresponding with pulley 51, slide rail 53 is consistent with the gradient of cylinder of rotary kiln 1, fixed mount 52 both sides are provided with the limited block 55 of pulley 51 by bolt 54, and limited block 55 is fixed in bolt 54 1 ends, adjust the displacement that bolt 54 can limit pulley 51.When cylinder of rotary kiln 1 needed " up " or " descending " in operating mode, heat exchange cover 2 can be followed cylinder of rotary kiln 1 slippage, and the sealing device at the cover of heat exchange simultaneously 2 two ends can produce displacement, and seal clearance is not had influence.
As Fig. 4 and shown in Figure 7, in order to prevent of the influence of thermometric window 17 incrustation to thermometric, in thermometric window 17, be equiped with automatic stay-furring tool 6, automatically stay-furring tool 6 comprises movable stand 61, movable stand 61 bottoms connect screw mandrel 62 and move horizontally, movable stand 61 tops connect positioning and guiding bar 63, screw mandrel 62 rotations drive movable stand 61 and move, positioning and guiding bar 63 can prevent that movable stand 61 from rotating, thereby guarantee that movable stand 61 moves horizontally, movable stand 61 1 sides connect window cleaner 64, and window cleaner 64 props up thermometric window 17 by the spring 65 that is located in the movable stand 61, window cleaner 64 both sides connect retainer spring 66, can prevent that window cleaner 64 positions are offset.Automatically can also install the cylinder of rotary kiln stay-furring tool on the stay-furring tool 6, the cylinder of rotary kiln stay-furring tool comprises the snaking sheet 67 that is arranged on movable stand 61 opposite sides, snaking sheet 67 props up cylinder of rotary kiln 1 outer surface by the spring II68 that is located in the movable stand 61, snaking sheet 67 bottoms connect support spring 69, can prevent that snaking sheet 67 positions are offset.
As shown in Figure 8, one end of screw mandrel 62 passes heat exchange cover 2 by sealed support 75 and connects driving pulley 71, driving pulley 71 is driven by motor 74, motor 74 connects counting and positive and negative rotating controller 73 automatically, automatically counting is connected revolution detector 72 with positive and negative rotating controller 73, revolution detector 72 detects screw mandrel 62 number of revolutions, automatically count by automatic counting and positive and negative rotating controller 73, when the numerical value of automatic counting arrives a certain numerical value, show when the unidirectional stroke of automatic stay-furring tool 6 arrival is expired journey, automatically counting and 74 counter-rotatings of positive and negative rotating controller 73 control motors, make automatic stay-furring tool 6 realize oppositely moving thermometric window 17 is cleaned repeatedly, be provided with the cylinder of rotary kiln stay-furring tool then snaking sheet 67 can carry out snaking to cylinder of rotary kiln 1 outer surface.
Automatic stay-furring tool 6 in these four the heat exchange covers of 1#, 2#, 3# and 5# that use as evaporimeter is not installed the cylinder of rotary kiln stay-furring tool, installing cylinder of rotary kiln stay-furring tool during 4# heat exchange cover uses as superheater.
The low temperature and low pressure steam that has certain degree of superheat with production is an example: 4# heat exchange cover uses as superheater, considered that the torrid zone easily produced incrustation scale, on the cylinder of rotary kiln in the 4# heat exchange cover helical blade 18 is not set, automatically installing cylinder of rotary kiln stay-furring tool on the stay-furring tool 6 can be removed the incrustation on the cylinder of rotary kiln 1 continuously automatically during operating mode; When adopting the chemical method scale removal, this heat exchange cover still can install the helical blade that is welded on the cylinder of rotary kiln additional, to increase the heat exchange effect.As shown in Figure 9, feedwater and separate by drum 82 after water cause 6# heat exchange cover, inject from the import 22 of heat exchange cover 2 bottoms, and draw from the outlet 23 at these heat exchange cover 2 tops behind higher cylinder of rotary kiln 1 surface (greater than the 100 ℃) heat convection of temperature.Guide to respectively in 1#, 2#, 3# and four the heat exchange covers of 5# that use as evaporimeter by carbonated drink pipeline and control valve I84, the operation principle of four heat exchange covers is identical: inject heat exchanging chamber 3 by the water after the preheating of 6# heat exchange cover from bottom inlet 22, higher cylinder of rotary kiln 1 surface (greater than 150 ℃) of water and temperature directly contacts free-convection boiling or nucleate boiling takes place, steam bubble rises to the gas collection district on heat exchanging chamber 3 tops, and the saturated vapor in gas collection district or steam water interface cause drum 82 by the jet chimney of heat exchanging chamber 3 top exits 23.Cause 4# heat exchange cover by the saturated vapor after drum 82 separation, saturated vapor is introduced from 4# heat exchange cover bottom inlet 22, after higher cylinder of rotary kiln 1 surface (greater than the 200 ℃) heat exchange of temperature, form superheated steam (about 30 ℃ of the degrees of superheat), gas collection district by heat exchanging chamber 3 tops and jet chimney cause generating and are used for the filling of steam turbine with the low temperature and low pressure steam plenum chamber, and the pushing turbine rotation is the drive generator for electricity generation also.
Can be designed to Natural Circulation as required between drum and the evaporimeter, also can adopt repeatedly forced circulation mode.When adopting repeatedly the forced circulation mode, need to connect circulating pump 83 and be used for forced circulation.
When all producing the low-temp low-pressure saturated vapor, 4# heat exchange cover uses as evaporimeter.
Embodiment two:
Present embodiment uses conduction oil to be heat transferring medium, conduction oil in the mode of forced circulation by the heat exchange cover to the cylinder of rotary kiln surface heat exchanging, conduction oil after heat exchange heats up produces steam by steam generator and is used for generating, and the conduction oil after also heat exchange can being heated up directly causes transducing head and is used for heating etc.
The cement rotary kiln barrel radiation recycle device comprises cylinder of rotary kiln 1, and segmentation is provided with heat exchange cover 2 on the cylinder of rotary kiln 1, after two semicircle cylindrical shells that heat exchange cover 2 is made by steel plate connect by flange cylinder of rotary kiln 1 is encased.Heat exchange cover 2 outer surfaces are provided with heat-insulation layer 21, scatter and disappear to prevent heat.Be provided with sealing device between heat exchange cover 2 two ends and the cylinder of rotary kiln 1, heat exchange cover 2 inner surfaces and cylinder of rotary kiln 1 outer surface form the heat exchanging chamber 3 of sealing by sealing device, be full of heat transferring medium in the heat exchanging chamber 3, heat transferring medium adopts heat-conductive characteristic conduction oil preferably, the thermal conductivity factor of homemade WD-350 conduction oil in the time of 200 ℃ is 0.452KJ/mhr ℃, and serviceability temperature can reach 300 ℃.As shown in Figure 10 and Figure 11, cylinder of rotary kiln 1 outer surface in the heat exchanging chamber 3 is provided with helical blade 18.Heat exchange cover 2 comprises 7#, 8#, 9# and 10# heat exchange cover.The heat exchange cover is not installed because of cylinder of rotary kiln 1 temperature lower (about 150 ℃) in kiln tail 12 positions.
As Fig. 3 and shown in Figure 5, sealing device between heat exchange cover 2 two ends and the cylinder of rotary kiln 1, comprise the holder 47 that is welded on cylinder of rotary kiln 1 outer surface, holder 47 1 sides are provided with rotary packing ring 41, rotary packing ring 41 is made by steel plate, rotary packing ring 41 bottoms are by the temperature resistant rubber I42 cylinder of rotary kiln 1 that is tightly connected, can solve the sealing between rotary packing ring 41 and the cylinder of rotary kiln 1, when when cylinder of rotary kiln 1 distortion such as " losing circle " taking place under operating mode simultaneously, allow rotary packing ring 41 to produce relative microdisplacement with cylinder of rotary kiln 1.Be provided with automatic propelling stationary seal ring 44 between rotary packing ring 41 and the heat exchange cover end face 24, automatically advance stationary seal ring 44 to make by steel plate, automatically advance stationary seal ring 44 tops by the temperature resistant rubber II45 heat exchange cover end face 24 that is tightly connected, can solve the sealing between automatic propelling stationary seal ring 44 and the heat exchange cover end face 24, and temperature resistant rubber II45 can axially produce along cylinder of rotary kiln 1 and stretch when advancing stationary seal ring 44 to move automatically, guarantees sealing effectiveness.Automatically advance stationary seal ring 44 to be fixed on the heat exchange cover end face 24 by two bolts 441 of horizontal distribution up and down, automatically advance between stationary seal ring 44 and the bolt 441 and be provided with sliding sleeve 442, sliding sleeve 442 width are greater than advancing stationary seal ring 44 width automatically, sliding sleeve 442 both sides are fixed on the bolt 441 by adjusting nut 444, simultaneously the bolt 441 of top is further fixing by pull bar 443, advances stationary seal ring 44 to slide on can adjusting sliding sleeve 442 between the nut 444 in both sides automatically.When sealed packing 43 wearing and tearing, because therefore the pressure of heat transferring medium promote to advance automatically stationary seal ring 44 to move to rotary packing ring 41 directions greater than external atmosphere pressure in the heat exchanging chamber 3, the wearing and tearing of compensation sealing packing 43 keep seal clearance constant.Automatically advance stationary seal ring 44 to be provided with elasticity stationary seal ring 46, be provided with sealed packing 43 between elasticity stationary seal ring 46 and the rotary packing ring 41.Elasticity stationary seal ring 46 is made by temperature resistant rubber, and elasticity stationary seal ring 46 is two circular-arc projectioies that distribute up and down, is equipped with groove I on the projection, and rotary packing ring is provided with the groove II48 corresponding with groove I, and sealed packing 43 is sandwiched between groove I and the groove II48.Be filled with hydraulic oil in the elasticity stationary seal ring 46, its oil pressure is higher than the pressure of heat transferring medium in the heat exchanging chamber 3, under operating mode, when rotary packing ring 41 causes micro-deformation because of cylinder of rotary kiln 1 various distortion, elasticity stationary seal ring 46 can be followed its micro-deformation, guarantees the sealing function of sealed packing 43 thus.On-the-spot turning is carried out in the rotation (about linear velocity 0.7m/s) that the processing and utilization rotary packing ring 41 of groove II48 is installed the back cylinder of rotary kiln makes that rotary packing ring 41 end faces are smooth, car goes out annular ditch groove II48, simultaneously to giving car light with the contact-making surface of sealed packing 43 in the groove II48 and polishing is handled.When sealed packing 43 serious wear,, reduce influence to the kiln running rate as long as the hydraulic oil in the release elasticity stationary seal ring 46 can be changed sealed packing 43 fast.According to the actual seal request of present embodiment, can only use a sealed packing.
As Fig. 3 and shown in Figure 6, heat exchange cover 2 bottoms connect carriage, carriage comprises four pulleys 51 that are arranged on heat exchange cover 2 bottoms and is supported in ground four fixed mounts 52, fixed mount 52 is provided with the slide rail 53 corresponding with pulley 51, slide rail 53 is consistent with the gradient of cylinder of rotary kiln 1, fixed mount 52 both sides are provided with the limited block 55 of pulley 51 by bolt 54, and limited block 55 is fixed in bolt 54 1 ends, adjust the displacement that bolt 54 can limit pulley 51.When cylinder of rotary kiln 1 needed " up " or " descending " in operating mode, heat exchange cover 2 can be followed cylinder of rotary kiln 1 slippage, and the sealing device at the cover of heat exchange simultaneously 2 two ends can produce displacement, and seal clearance is not had influence.
In order to prevent of the influence of thermometric window 17 incrustation to thermometric, in thermometric window 17, be equiped with automatic stay-furring tool 6, automatically stay-furring tool 6 comprises movable stand 61, movable stand 61 bottoms connect screw mandrel 62 and move horizontally, movable stand 61 tops connect positioning and guiding bar 63, screw mandrel 62 rotations drive movable stand 61 and move, positioning and guiding bar 63 can prevent that movable stand 61 from rotating, thereby guarantee that movable stand 61 moves horizontally, movable stand 61 1 sides connect window cleaner 64, window cleaner 64 props up thermometric window 17 by the spring 65 that is located in the movable stand 61, and window cleaner 64 both sides connect retainer spring 66, can prevent that window cleaner 64 positions are offset.
One end of screw mandrel 62 passes heat exchange cover 2 by sealed support 75 and connects driving pulley 71, driving pulley 71 is driven by motor 74, motor 74 connects counting and positive and negative rotating controller 73 automatically, automatically counting is connected revolution detector 72 with positive and negative rotating controller 73, revolution detector 72 detects screw mandrel 62 number of revolutions, automatically count by automatic counting and positive and negative rotating controller 73, when the numerical value of automatic counting arrives a certain numerical value, indicate when the unidirectional stroke of automatic stay-furring tool 6 arrival is expired journey, automatically counting and 74 counter-rotatings of positive and negative rotating controller 73 control motors make automatic stay-furring tool 6 realize oppositely moving thermometric window 17 is cleaned repeatedly.
As shown in Figure 10 and Figure 11, being used for generating with conduction oil by steam generator 85 generation steam is example: oil return or cold oil after steam generator 85 heat exchange, inject from the import 22 of heat exchange cover 2 bottoms by oil circulating pump 86, the cylinder of rotary kiln 1 of higher with temperature in heat exchanging chamber 3 (average about 300 ℃) directly contacts, absorb cylinder of rotary kiln 1 surperficial heat with convection current and conduction heat exchange mode, the deep fat (about 200 ℃) after heat exchange heats up is guided to steam generator 85 generation steam and is used for generating.Steam generator can be designed to produce the low-temp low-pressure that has certain degree of superheat (0.2～0.3Mpa.150～170 ℃) steam and be used for the steam turbine filling; Also can be designed to produce the saturated low-pressure steam about 1.3Mpa, incorporate the saturated vapor that the cement plant boiler of power generation by waste heat is produced into, after overheated, be used for generating.Conduction oil after steam generator 85 heat exchange cooling is sent into heat-exchanger rig by oil circulating pump 86 after measures such as Oil-gas Separation, filtration, finish a thermodynamic cycle.Fuel reserve tank is set in the circulatory system, in the airtight heat exchanging chamber of each section heat exchange cover emergent equipment water jetting cooler is set.When heat exchange is broken down with circulation system, the conduction oil in faulty section or the whole heat exchange cover is caused fuel reserve tank, emergent water inlet 25 interim water sprays cool off from the cylinder of rotary kiln bottom.
As shown in figure 11, in the inlet and outlet of fuel channel design of heat exchange cover, the characteristics inhomogeneous at the cylinder of rotary kiln surface temperature distribution and change is bigger, water conservancy diversion oil content multichannel turnover heat exchange oil pocket, each is provided with oily temperature-oil inlet quantity automatic regulating system along separate routes, can regulate control valve II92 automatically according to the oil outlet temperature that Temperature Detector I91 measures and control corresponding oil inlet quantity.The circulation oil mass of each heat exchange cover is distributed and can be regulated the oil inlet quantity that control valve III93 controls correspondence automatically according to the oil outlet temperature that Temperature Detector II94 measures.Designed branch road binders temperature-oil inlet quantity automatic adjustment circuit in above-mentioned single heat exchange cover, oily temperature-the oil inlet quantity a plurality of " interior ring " that forms each heat exchange cover " inside " of heat-exchange system is regulated oily temperature-oil inlet quantity overall " outer shroud " adjusting control of control and heat exchange cover, to realize balanced heat exchange and cooling to the cylinder of rotary kiln surface, make the oily temperature after the heat exchange be in optimum value, improve heat exchange efficiency, guarantee the safe handling of cylinder of rotary kiln.Above-mentioned automatic control system can be used Programmable Logic Controller (PLC) control.Each the measuring point temperature of tubular axis direction that also can utilize cylinder of rotary kiln automatic temperature measurement instrument to record realizes Kiln Shell Temperature-heat exchange is controlled automatically with the many closed loops of oil mass nested " precisely ".
Claims (7)
1, a kind of cement rotary kiln barrel radiation recycle device, comprise upward some heat exchange covers (2) of segmentation setting of cylinder of rotary kiln (1), heat exchange cover (2) outer surface is provided with heat-insulation layer (21), it is characterized in that: be provided with sealing device between described heat exchange cover (2) two ends and the described cylinder of rotary kiln (1), described heat exchange cover (2) inner surface and described cylinder of rotary kiln (1) outer surface form the heat exchanging chamber (3) of sealing by described sealing device, described heat exchange cover (2) bottom is provided with the import (22) that communicates with described heat exchanging chamber (3), described heat exchange cover (2) top is provided with the outlet (23) that communicates with described heat exchanging chamber (3), and described heat exchange cover (2) bottom connects carriage and realizes moving axially.
2, cement rotary kiln barrel radiation recycle device according to claim 1, it is characterized in that: described sealing device comprises the holder (47) on cylinder of rotary kiln (1) outer surface, holder (47) one sides are provided with rotary packing ring (41), rotary packing ring (41) bottom is by temperature resistant rubber I (42) the described cylinder of rotary kiln (1) that is tightly connected, be provided with automatic propelling stationary seal ring (44) between described rotary packing ring (41) and the described heat exchange cover end face (24), automatically advance stationary seal ring (44) top by temperature resistant rubber II (45) the described heat exchange cover end face (24) that is tightly connected, described automatic propelling stationary seal ring (44) connects elasticity stationary seal ring (46), is provided with sealed packing (43) between elasticity stationary seal ring (46) and the described rotary packing ring (41).
3, cement rotary kiln barrel radiation recycle device according to claim 2, it is characterized in that: described automatic propelling stationary seal ring (44) is fixed on the described heat exchange cover end face (24) by two bolts (441) of horizontal distribution up and down, be provided with sliding sleeve (442) between described automatic propelling stationary seal ring (44) and the described bolt (441), described sliding sleeve (442) width is greater than described automatic propelling stationary seal ring (44) width, and described sliding sleeve (442) both sides are fixed on the described bolt (441) by adjusting nut (444).
4, cement rotary kiln barrel radiation recycle device according to claim 2, it is characterized in that: described elasticity stationary seal ring (46) is two circular-arc projectioies that distribute up and down, projection is provided with groove I, described rotary packing ring (41) is provided with the groove II (48) corresponding with described groove I, and described sealed packing (43) is sandwiched between described groove I and the groove II (48).
5, cement rotary kiln barrel radiation recycle device according to claim 1, it is characterized in that: described carriage comprises the pulley (51) that is arranged on described heat exchange cover (2) bottom and is supported in ground fixed mount (52), fixed mount (52) is provided with the slide rail (53) corresponding with described pulley (51), and described fixed mount (52) both sides are provided with the limited block (55) of described pulley (51) by bolt (54).
6, cement rotary kiln barrel radiation recycle device according to claim 1 is characterized in that: described heat exchange cover (2) is provided with and the corresponding thermometric window (17) of the outer automatic scan temperature measurer of cylinder of rotary kiln (1) direction.
7, cement rotary kiln barrel radiation recycle device according to claim 6, it is characterized in that: described thermometric window (17) connects automatic stay-furring tool (6), automatically stay-furring tool (6) comprises movable stand (61), movable stand (61) bottom connects screw mandrel (62) and moves horizontally, described movable stand (61) top connects positioning and guiding bar (63), described movable stand (61) one sides connect window cleaner (64), window cleaner (64) props up described thermometric window (17) by the spring (65) that is located in the described movable stand (61), and described window cleaner (64) both sides connect retainer spring (66).
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008200827993U CN201203355Y (en) | 2008-01-25 | 2008-01-25 | Heat radiation reutilization apparatus of cement rotary kiln barrel |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008200827993U CN201203355Y (en) | 2008-01-25 | 2008-01-25 | Heat radiation reutilization apparatus of cement rotary kiln barrel |
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| CN201203355Y true CN201203355Y (en) | 2009-03-04 |
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| CNU2008200827993U Expired - Lifetime CN201203355Y (en) | 2008-01-25 | 2008-01-25 | Heat radiation reutilization apparatus of cement rotary kiln barrel |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290190B (en) * | 2008-01-25 | 2010-10-13 | 钱建荣 | Cement rotary kiln barrel radiation, reclaiming and utilizing device |
| CN102052828A (en) * | 2009-11-05 | 2011-05-11 | 中国铝业股份有限公司 | Industrial rotary kiln residual heat utilizing device |
| CN102102944A (en) * | 2009-09-07 | 2011-06-22 | 厦门热工环保系统工程有限公司 | Flue gas waste heat recovery method for rotary kiln |
| CN102269516A (en) * | 2010-06-02 | 2011-12-07 | 刘小琴 | Heat collecting device for reclaiming waste heat of rotary kiln barrel |
| CN102636022A (en) * | 2012-04-28 | 2012-08-15 | 中国科学院广州能源研究所 | Cylinder wall residual heat recovery and heat transfer device of dry method cement rotary kiln |
| CN103148699A (en) * | 2011-12-06 | 2013-06-12 | 洛阳蓝海实业有限公司 | High-efficiency waste heat utilization device for cylinder surface of rotary kiln |
| CN103471411A (en) * | 2013-10-12 | 2013-12-25 | 攀枝花学院 | Waste heat recovery device for outer wall of cement rotary kiln |
| CN104930866A (en) * | 2015-06-09 | 2015-09-23 | 尹明和 | Cement kiln steam heat exchanger |
| CN105135894A (en) * | 2015-07-03 | 2015-12-09 | 中信重工机械股份有限公司 | Device and technique using rotary kiln barrel heat to generate power |
| CN106440770A (en) * | 2016-08-29 | 2017-02-22 | 洛阳堆金环保设备有限公司 | Rotary kiln with waste heat utilization system for roasting molybdenum oxide |
| CN109883202A (en) * | 2019-03-27 | 2019-06-14 | 福建德科达环保有限责任公司 | A kind of production method of environment protection type heat insulating kiln |
| CN110793337A (en) * | 2018-08-02 | 2020-02-14 | 天壕环境股份有限公司 | Rotary kiln barrel waste heat recovery system |
| CN111504054A (en) * | 2020-04-16 | 2020-08-07 | 江苏中意建筑材料有限公司 | Dry-process hollow rotary kiln for preparing aluminate cement |
| CN112460599A (en) * | 2020-12-10 | 2021-03-09 | 江苏海建股份有限公司 | Industrial salt pyrolysis carbonization rotary kiln barrel |
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- 2008-01-25 CN CNU2008200827993U patent/CN201203355Y/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101290190B (en) * | 2008-01-25 | 2010-10-13 | 钱建荣 | Cement rotary kiln barrel radiation, reclaiming and utilizing device |
| CN102102944A (en) * | 2009-09-07 | 2011-06-22 | 厦门热工环保系统工程有限公司 | Flue gas waste heat recovery method for rotary kiln |
| CN102052828A (en) * | 2009-11-05 | 2011-05-11 | 中国铝业股份有限公司 | Industrial rotary kiln residual heat utilizing device |
| CN102269516A (en) * | 2010-06-02 | 2011-12-07 | 刘小琴 | Heat collecting device for reclaiming waste heat of rotary kiln barrel |
| CN103148699A (en) * | 2011-12-06 | 2013-06-12 | 洛阳蓝海实业有限公司 | High-efficiency waste heat utilization device for cylinder surface of rotary kiln |
| CN102636022A (en) * | 2012-04-28 | 2012-08-15 | 中国科学院广州能源研究所 | Cylinder wall residual heat recovery and heat transfer device of dry method cement rotary kiln |
| CN103471411B (en) * | 2013-10-12 | 2015-10-07 | 攀枝花学院 | Waste heat recovery device |
| CN103471411A (en) * | 2013-10-12 | 2013-12-25 | 攀枝花学院 | Waste heat recovery device for outer wall of cement rotary kiln |
| CN104930866A (en) * | 2015-06-09 | 2015-09-23 | 尹明和 | Cement kiln steam heat exchanger |
| CN104930866B (en) * | 2015-06-09 | 2017-03-29 | 尹明和 | Cement kiln vapor heat exchanger |
| CN105135894A (en) * | 2015-07-03 | 2015-12-09 | 中信重工机械股份有限公司 | Device and technique using rotary kiln barrel heat to generate power |
| CN106440770A (en) * | 2016-08-29 | 2017-02-22 | 洛阳堆金环保设备有限公司 | Rotary kiln with waste heat utilization system for roasting molybdenum oxide |
| CN110793337A (en) * | 2018-08-02 | 2020-02-14 | 天壕环境股份有限公司 | Rotary kiln barrel waste heat recovery system |
| CN109883202A (en) * | 2019-03-27 | 2019-06-14 | 福建德科达环保有限责任公司 | A kind of production method of environment protection type heat insulating kiln |
| CN111504054A (en) * | 2020-04-16 | 2020-08-07 | 江苏中意建筑材料有限公司 | Dry-process hollow rotary kiln for preparing aluminate cement |
| CN112460599A (en) * | 2020-12-10 | 2021-03-09 | 江苏海建股份有限公司 | Industrial salt pyrolysis carbonization rotary kiln barrel |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090304 Effective date of abandoning: 20080125 |