CN1789193B - Beams for processing lumpy materials for kilns - Google Patents

Abstract

The invention is referred to support/protection elements that can be used in kilns for the calcination and sintering of materials in lumps such as limestone, dolomite and likely. In particular the invention is related to a support/protection beam and/or a burner beam and/or a beam for combustion gases discharge and/or combustion air suction beam, the beam being cooled by means of diathermic oil. The kiln comprises at least one burning zone which is combinated with at least one combustor, and the combustor is provided with a vault construction which is supported by the beam.

Description

Beams for kilns processing lumpy materials

Technical field

The present invention is the device that supports and protect the kiln combustion chamber arch bridge of processing lumpy materials.Bulk material is meant the high carbon acid calcium of alligatoring or the different big or small primary building stones or the former unprocessed dolomites of high carbon acid magnesium/calcium carbonate content.The present invention refers in particular to and is used to calcine bulk material such as Wingdale, rhombspar or the similar support/protector of the kiln of bulk material.

Background technology

The processing of above-mentioned bulk material is in order to produce for example unslaked lime, perhaps usually, from solid matter, to isolate volatile fraction exactly, and this processing is to accomplish through the bulk material in the heating and calcining kiln.

Particularly, bulk material such as Wingdale, rhombspar or analogous material are designed to annular column formula from kiln top feed molar ratio such as kiln type, have vertical axis roughly.Material order from top to bottom passes preheating zone, calcining zone, second calcining zone, the 3rd calcining zone, homogeneous band, cooling zone, goes out strip.Calcining zone has been arranged 2 or 3 combustion chambers, is preferably adverse current, and the bottom of calcining zone is furnished with the first layer combustion chamber along the kiln perisporium, disposes burner; Second calcining zone is preferably adverse current, and its underpart is furnished with second layer combustion chamber along the kiln perisporium, disposes burner; The homogeneous band is and stream that recycle gas flows along same direction with the material that from calcining zone, comes out because the effect of injector flows downward.Cooling zone is in the anti-stream; Going out strip is used for by the discharging of calcined materials.

Calcining zone is along the vertical axis longitudinal extension, and several combustion chambers divide multilayer radially to arrange continuously.The setting of combustion chamber be the circular portion device outside the kiln sleeve, and another part is pyramid in sleeve, top is constructed with refractory brick usually, support section then is an arch bridge structure, this has just formed calcining zone.When filling in the kiln when treating the incinerating material, almost to fill in the sleeve and treat the incinerating material, bulk material is distributed in around the upper and lower arch bridge.During calcining, calcining zone moves down into the bottom calcining zone to material from top.The function of combustion chamber arch bridge is the load of propping material, and generally speaking, except the load on arch bridge top itself, the load of material is very big.

In addition, arch bridge is to be arch by three layers of synergetic refractory brick to build by laying bricks or stones, and wherein one deck defines the vault of combustion chamber, and thereby directly contacts with hot combustion gas.

Because the vault of domes is bearing high temperature continuously, behind the operation certain hour, time or length or weak point sometimes even have only time of some months, serious wearing and tearing will occur, need to change refractory brick.The wearing and tearing of this vault can make the support to arch bridge weaken gradually, thereby cause caving in of whole arch bridge, and the result can cause the stoppage in transit of whole kiln system.

This technical problem requires to find out a method and avoids above-mentioned serious inconvenience, and this is the background of the present invention just.

Summary of the invention

This problem is through using a kind of member and support and protecting the combustion chamber arch bridge of the kiln of processing Wingdale or this type of rhombspar material to solve, and this member can be resisted because the vault of arch bridge is exposed to the wearing and tearing that caused in the high temperature atmosphere.

Therefore, first purpose of the present invention provides a kind of support/protector, and a kind of beam of kiln promptly is provided; Said kiln is used to calcine the bulk material of the level attitude of the treatment zone that is positioned at said kiln, and wherein, said beam comprises wound oil cooling circuit; And wherein, said kiln comprises at least one calcining zone, is combined with at least one combustion chamber in the said calcining zone; Said combustion chamber is provided with a vault construction, and said domes are supported by said beam.。

Second purpose of the present invention provides a kind of kiln that is used to process Wingdale and rhombspar and analogue, and this kiln has above-mentioned support/protector.

Further characteristics of the present invention and advantage will become more apparent in conjunction with the drawings to a relevant explanation that embodiment did.This embodiment is an exemplary embodiments, the present invention is not made any restriction, and accompanying drawing is listed below.

Description of drawings

Fig. 1 is the side cutaway view of the kiln of a processing lumpy materials, and this stove has according to support/protector of the present invention;

Fig. 2 is a partial view along the section of the II-II line of the kiln among Fig. 1;

Fig. 3 is the sectional view along the III-III line among Fig. 2;

Fig. 4 is the sectional view along the IV-IV line among Fig. 2;

Fig. 5 A is the horizontal section skeleton view according to the detailed structure of support/protector of the present invention;

Fig. 5 B is the horizontal section skeleton view of detailed structure of the part of Fig. 5 A shown device;

Fig. 5 C is the horizontal section skeleton view of Fig. 5 B shown device;

Fig. 5 D is the longitudinal sectional view of Fig. 5 B shown device, is equipped with cooling fluid circulation system;

Fig. 6 A is the transverse sectional view of the support/protector of the first flexible example according to the present invention;

Fig. 6 B is the longitudinal profile side-view of Fig. 6 A shown device;

Fig. 7 A is the transverse sectional view of the support/protector of the second flexible example according to the present invention;

Fig. 7 B is the longitudinal sectional view of Fig. 7 A shown device;

Fig. 7 C is the base plane sectional view of Fig. 7 B shown device;

Fig. 8 is that the present invention supports/the cooling loop synoptic diagram of protector;

Fig. 9 is the transverse sectional view according to the device of the of the present invention the 3rd flexible example.

Embodiment

Fig. 1 is an instance of the kiln of calcining bulk material such as Wingdale or rhombspar.The design of kiln is the ring-shaped shaft kiln type preferably, but also can be the shaft furnace of circular, square or square-section, or two thorax kiln that is accumulation of heat kiln.

Kiln 1 is well known in the art, extends along the X-X vertical axis, comprises from top to bottom: preheating zone 2, and the material of treating calcination is from pack in the kiln via the device (not shown) of a routine here; Calcining zone, adverse current, against the combustion chamber of the two-layer band burner of kiln wall periphery, i.e. upper combustion chamber 3 and lower combustion chamber 4; Homogeneous band 5, and stream, here, recycle gas moves down along same direction with the material that from calcining zone, flows down under the effect of injector; Cooling zone 6, adverse current; And gone out strip 7 by calcined materials.Such stove in German patent DE 3140582, describing can be used as reference.

Column 8 in known manner; The mode of for example mentioning in the German patent DE 3140582 is inserted in the kiln; Formed an annular tubular space 12 between the outer wall 9 of column 8 and the inner-wall surface 10 of kiln outer wall 11, treated the incinerating furnace charge from top to bottom, flowed along this annular space.Column 8 bottoms are by 13 sealings of a wall, and the column top is by 14 sealings of a lid, and for example lid can be tapered.In addition, column 8 is divided into upward inner core 16 and doffing 17 by an across bulkhead 15.Specifically, last inner core 16 has separated above-mentioned calcining zone, and doffing 17 is via cooling air perforate 18 communicate with annular tubular space 12 (Fig. 1 only shows a perforate).

In addition, each calcining zone all is furnished with a corresponding combustion chamber, and first calcining zone 3 is furnished with combustion chamber 19, the second calcining zones 4 and is furnished with combustion chamber 20.Combustion chamber placement is in the bottom of every layer of calcining zone, like this, and the mode that combustion gases can be common ascension on the side direction.

Preferably shown in Fig. 2 to Fig. 5 D, the first layer combustion chamber 19 limits and is separated into corresponding calcining zone with second layer combustion chamber 20 a pyramid structure 22.

Specifically, pyramid structure 22 comprises top 23 and vault part 24 (Fig. 4).

A special benefits according to the present invention is, vault part 24 has a series of domes, and these domes are not to be supported by the kiln inwall in known manner, but by supports/protector, just, beam 26 carryings.

Each combustion chamber in first combustion chamber 19 and second combustion chamber 20 is all installed traditional burner (not shown in Fig. 1 to Fig. 5 D) usually; This burner can use gaseous state, solid-state and/or fuel that efflorescence is solid-state, is installed in kiln 1 an outside surface upper combustion chamber ingress 27 or their side.

The beam that beam 26 is preferably jumped and extended along the X-X axle is preferably shown in Fig. 5 B.Beam 26 is radially installed, two on each arch bridge, and the X-X axle approximate vertical of the Y-Y axle of beam and kiln itself is seen Fig. 2.In addition, after beam inserted the combustion chamber, its far-end 28 was supported on the lining 29 of interior refractory wall of kiln 1, and near-end 30 is supported near the base plate 31 the entry of combustion chamber 27, and the relative kiln outer wall of this base plate is laterally, sees Fig. 3.

Shown in Fig. 5 A, beam 26 has the xsect of a T shape, has termination 32 and beam body 33.Termination and beam body have interlayer 34, so that cooling fluid flows.Cooling fluid can preferably be selected through any type of channel flow in interlayer as the case may be, for example, can be the passage that arrow indicated among Fig. 5 C and the 5D.

The centre of the beam body 33 of beam 26 can hold burner easily, and especially burner pipe 35, and preferably shown in Fig. 5 B, the cavity 36 of particular design can hold the burner that quantity does not wait.Cavity 36 can be a plurality of, and preferably shown in Fig. 5 A, each cavity is separated by a longitudinal baffle 37.Burner pipe 35 comprises burner pipe 38, and the parallel beam 26 that stretches into of burner pipe is preferably pressed one for one.Burner pipe 38 is preferably entangled by hollow chamber 39 (hollow), and this chamber can make combustion air flow to each or one group of burner pipe, so that control air distributes better, can make and measure and regulate flow incessantly.Particularly, combustion air is through preferably forcing to get into beam at the opening (not shown) of kiln 1 bottom, being similar to the passage shown in Fig. 7 A and the 7B through one and getting into beam.Above-mentioned opening also can be used for circulating combustion gas.

Burner pipe 35 or chamber 39 all are supported on the baffle plate 37 through separator, and hold in the palm in the bottom of same chamber 39 through one group of wheel 60 (seeing Fig. 5 B), and this group wheel can make and insert one group of jet pipe 35 and chamber 39 easily.In addition, burner pipe with separator 41 device in chamber, to avoid managing and the contacting of chamber wall.

Shown in Fig. 5 B, burner pipe 35 1 ends 42 openings are installed on the corresponding opening 43 of beam 26 outer walls; These openings 43 are in the different positions along beam, so that fuel different location in the beam is flowed out and walked in kiln according to predetermined point.Like this, can make the blended air/fuel along the beam uniformly distributing.

Beam 26 is made by the steel that high temperaturesteel maybe can bear the working temperature of kiln 1.In fact, because cooling system (following will the introduction) is arranged, the temperature that the beam ability is 200 ℃-300 ℃ gets final product.Cooling system can make temperature-stable remain on this scope.In a word, the material of beam can be the non-steel alloy of high-quality well known in the art, special non-steel alloy and Special Alloy Steel.All above-mentioned steel grades can both bear said temperature and bear tangible load, and its physical strength is suitable for making the beam that above-mentioned kiln is used.

Just can satisfy above-mentioned requirements: P275N (No.1.0486), P275NH (No.1.0487), P275NL1 (No.1.0488) or P275NL2 (No.1.1104) such as following steel grade).

As implied above, beam 26 is effectively cooled off by cooling fluid through a recycle system.Preferably, heat-eliminating medium should have the material of heat conductivility, like water, MO, vegetables oil or synthetic oil (MONSANTO), biphenyl and verivate thereof, four aryl silicon ester, soluble salt mixture, liquid prod such as glycerine, silicone grease, naphthalene derivatives.In these oil; Best is the mineral substance thermal oil that is used to cool off boiler, heat exchanger or similar devices; For instance, available these oil grades are on the market: ESSOTHERM 300 (ESSO), TEXATHER 46 (TEXACO) or SHELL THERMIA OILB.

Heat-eliminating medium circulates in the interlayer 34 at above-mentioned beam 26 under the certain pressure condition, is not higher than 300 ℃ so that the temperature of beam remains on.The heat-eliminating medium part heat that produces that will burn is taken away, thereby makes beam keep good maintenance and working order.

What Fig. 5 C and 5D arrow were indicated is that heat-eliminating medium round-robin in the interlayer 34 of beam 26 is given an example.

Specifically, Fig. 8 is used for thermal oil is sent into loop and round-robin instance thereof in the beam.Comprise first heat exchanger 44 ' in the loop, can be tubular type, it has or be not with radiator element 45 ', the band recovery of heat (shown in the outlet/inlet arrow of heat exchanger 44 '); Second heat exchanger 44 can be flange-cooled heat exchanger, has fan 45 to take out waste gas (or recovery).Above-mentioned two kinds of heat exchangers can be above-mentioned beam cooling in a conventional manner.

Thermal oil passes strainer then, and is not shown, and it can be conventional pattern, so that thermal oil keeps clean.

In the downstream of strainer, a little settling vessel (not shown) is arranged, can last impurity possible in the thermal oil be rejected, form an interference-free coverage area like this, circulating oil pump is run well.

In the settling vessel downstream, pump group 46 is installed, two impeller pumps are arranged, every pump is equipped with phonomoter, and other has a diesel-powered pump (inlet parallel of all three pumps is installed, so that guarantee that the pressure of exit collector is identical with flow).This system generally has only the work (another electric pump is subsequent use, just when thermal oil pressure or flow reduction, starts) in two electric pumps.The diesel motor pump is when having a power failure, to start, and in such cases, motor-mount pump has just been stopped transport.Like this, just guarantee the working life of beam, made thermal oil in beam, keep circulation, kept the cooling of beam, guaranteed the normal operation of whole kiln system.

Fuel feeding one side of a pump from Heat-transfer Oil Pump, an oil pipe 48 is introduced oil-feed scoop 49 with oil, and first via pipe 50 is from being connected to a beam of first group of two beam 26 here.Heat-eliminating medium gets into another root beam that is arranged in different level via the second road pipe 51.Then, Third Road pipe 52 is led the outlet of second beam getting back to first group of beam with medium, and medium is imported second beam of different levels by the four road pipe 53.At last, the five road pipe 54 imports exit collector 55 with medium, gets into heat exchanger 44 ' via used oil pipe 56 media.

It is pointed out that this concrete recycle system makes cooling medium consumption lower, particularly using under the heat conduction oil condition, therefore, can practice thrift the medium circulation total amount and improve overall system efficiency.

Oily expansion slot 47 is installed in the kiln top, to guarantee pump group stability hydraulic and the slight expansion because of the caused oil volume of the temperature difference of working temperature (being about 200 ℃) and envrionment temperature is compensated.

At last, an oil storage vessel 48 ' is installed in ground, guarantees the recoverable amount of the oil of continous-stable in the recycle system, in addition, when stopping the kiln maintenance (for example changing beam), can intrasystem oil can be stored in this oil storage vessel.

Be necessary as required or preference is considered above-mentioned cooling loop is improved.Can consider that such as the pipeline branch line one in one group of beam of first via pipe and same level is connected; The second road pipe imports another root beam of same group on the same level with medium; The Third Road pipe imports medium on first beam of one group of different levels, and the five road pipe imports exit collector with medium.

Can be recovered under the situation of waste heat in the kiln when not planning maybe to use legacy system to reclaim, also can cancel above-mentioned first heat exchanger 44 '.

In any case, those skilled in the art might improve this oil circulating system.

By means of the traditional PLC system, whole cooling system is operation automatically usually.

Fig. 6 A and Fig. 6 B have shown the different structure form of beam 26.

Particularly, beam 126 sees from the structure angle, is equivalent to the half the of beam 26, or a part in two parts that are equivalent to opened in 37 minutes by wash plate, therefore these beams of illustrated in detail no longer below.With the identical parts of label representative that marked among Fig. 5 A to Fig. 5 D.

The benefit of using beam 126 to bring is through this structure, and combustion gases are only generated at an end of beam, just generates at the end towards the outside, combustion chamber.Therefore, a other end at beam has burner pipe just passable when concrete the application, and this just makes whole kiln be simple and easy to make, and has reduced the size of beam, has increased the calcining surface and has reduced consumption.

In addition, the similar beam of a kind of and above-mentioned beam can be used for the cross section for circular, square or rectangle but be not the annular kiln.This embedding beam, can be avoided no-good burner pipe is installed on the kiln wall, and only need the burner pipe towards kiln central authorities near the kiln wall across the cross section of kiln, also need not install the outside simultaneously and/or peripheral burner conducts heat to lime building stones bed.

According to another embodiment of the present invention, beam 226 is similar with the beam 26 among Fig. 5 C, but does not have termination 32, dividing plate 37 and burner pipe 35, and this beam is shown among Fig. 7 A and the 7B.

Particularly, it is the orthogonal cross section basically that beam 226 has one, has and roughly the same sandwich system 234 noted earlier.In addition, centre portions has cavity 261, is suitable for warm air and/or waste gas circulation, to form a suitable recycle system.In fact, beam 226 can dispose opening 262, is installed in the side towards kiln bottom, and warm air (suitable blower fan) in a conventional manner is forced the two ends that the cavity 261 of flowing through gets into beams, arrives burner and realizes best combustion.

Combustion gases can also be sucked in the beam in inside, flow along aforesaid same loop path then, but get into a traditional recovery system.

In addition, beam 226 can also be with opening 262, and just simply as the support/protector of combustion chamber vault, method of cooling is the same.

Another function of beam 226 is as the beam that works the effect of bleeding, and also cool off by preceding method, and it is installed in the restriction that receives the back calcining zone in the shaft furnace equally, and beam is therein across its entire cross section extension, and is embedded in the pending material.

Beam of the present invention preferably can serve as a contrast thermal insulation and refractory materials, and for example refractory brick and/or mould material are to avoid contacting of the lower beam of Wingdale and surface temperature in the calcining zone.If Wingdale contacts with beam under the operational conditions of kiln, Wingdale is cooled off by beam; If beam surface lining is gone up thermal insulation and/or refractory materials, Wingdale is not directly contacted with beam, then can avoid Wingdale to be cooled off by beam.

The quantity of the beam of installing can not wait, and distributes in two ways: along the same Z-axis of every layer of combustion chamber distribute or should be two-layer in the staggered distribution of Z-axis of each layer.Beam is installed the very high combustion gases adverse current of temperature that bottom calcining zone burning is produced along same Z-axis; With the complete incinerating unslaked lime of calcining zone contacts on top, can cause the crystalline structure that concentrates lime like this, reduce its specific surface area and reduce the consequence of activity of lime.

Also will consider no matter use gaseous fuel, liquid fuel or efflorescence solid fuel, the fuel flow of every group of burner pipe should be controlled effectively and measure under automatic mode, and the fuel flow of each burner pipe is answered automatic or manual control and measured.Under the situation of using gaseous fuel, as previously mentioned, be the system of a use variable valve by PLC control.The PLC system is according to the opening degree regulate fuel flow of preset value through regulating variable valve.This system uses operating sensor, and to system, system constantly compares signal of receiving and preset value transmitter, sends conditioning signal then with signal transmitting, drives the device of regulated valve opening degree.When using liquid fuel, should use volume pump; When using the efflorescence solid fuel, should use dynamic measurement system and static system to distribute fuel, traditional distribution device such as rotary valve, metering screw or splitter etc. can use, and by PLC system operation and adjusting.The combustion air flow also can be regulated by variable valve, with suitable instrument measurement.These systems are all by PLC system operation and adjusting; Can be the flow of each burner fuel metering and combustion air; Thereby the distribution that obtains different heats and combustion air in the kiln and the interior negative pressure of kiln and/or malleation are complementary; Produce high reactivity degree material, can produce sintered material and produce various intermediate characteristic.

As previously mentioned, can cool off with various media easily according to hobby or special requirement according to beam of the present invention.

In fact, if aforesaid annular canister kiln, available any medium cooling, preferably like softening water, or further preferably, with aforesaid thermal oil (mineral oil).If beam is imbedded the shaft furnace of furnace charge, then best heat-eliminating medium should be the mineral substance thermal oil.

In fact, the pipeline that water-cooling system adopts wants big with valve volume with respect to the oil cooling system, and needs to use softening water, with avoid trouble and lime carbonate in beam, deposit made troubles.This makes equipment size bigger, and running cost is higher.

On the other hand, thermal oil cooling system size is less, and kiln system is become simply, and reason is that the size of pipeline and valve is little, and equipment and parts are compact.Simultaneously, the running cost of whole kiln system can reduce greatly, because after moving several years, just needs to change thermal oil.

In addition, use thermal oil can also reclaim preheating,, improve the efficient of kiln greatly through heat exchanger preheated-combustion-supporting wind.

Using another huge meliority of the beam of thermal oil is to make the oily interlayer of beam very little; Because the whole volume of the beam in the various kilns of calcining bulk material all reduces, this has just strengthened the effective calcining area and the output of bulk material, and under any circumstance; Can both make the material in the kiln be easy to descend; Thereby from technological angle, the processing efficiency of bulk material is higher.Specifically, through detecting, compare with traditional sucrose, the heat-eliminating medium flow velocity of the beam of this use thermal oil and heat-eliminating medium circulation interlayer cross section can reduce 30%.

Certainly, those skilled in the art can further improve support/protector according to the present invention, proposes new embodiment, and adapting to special needs, but all these are included in protection scope of the present invention that said claim limits.

Such as, the shape of beam, size and thickness can move but all remain foregoing mode in any case after changing according to the change of concrete structure condition.During particularly when the vault of the bridge that supports top, combustion chamber fully phases out or according to concrete needs and/or condition vault number change, the size of beam and thickness will strengthen.

Quantity, position and the type, particularly burner pipe of burner can be positioned at Liang Tishang such as can the combustion fuel of burner pipe being exported according to some special needs change in the beam, and be parallel with the beam-ends head.Like this, just can use the efflorescence solid fuel in the conventional mode.In addition, as previously mentioned, the technician can be applied to different kiln types with beam, and like shaft furnace, round kiln, rectangular kiln or rectangle kiln, and foregoing beam does not have support function and is embedded in the kiln type in the furnace charge material bed.

In addition, beam can be positioned in the kiln according to such scheme, also can locate with additive method, such as can be according to kiln type and/or the treatment type that will carry out, with beam radially locate with corresponding one or two level in one or two combustion chamber on.Certainly, in this case, beam can be changed size or shape as stated.

According to another embodiment of the present invention, see the beam 326 of Fig. 9, its shape and section basically with Fig. 7 A in beam 226 identical, comprise a cavity 361, several burner pipes 335 are contained in this cavity.Burner pipe 335 is surrounded by chamber 339, this combustion chamber identical with shown in Fig. 5 A.Particularly, the opening end 342 of burner pipe shown in the figure 335 is corresponding with opening 343 positions of the beam outer wall of one side towards the kiln bottom.This particular location is suitable for using the efflorescence solid fuel.In addition, burner pipe 335 in groups slips in the cavity 361 by wheel 360, this wheel the same with shown in Fig. 5 B.

Beam 326 has dual meliority, and that is exactly its cavity 361 two groups of burner pipes 335 of can packing into, is separated by a dividing plate 337, and this dividing plate is with identical shown in Fig. 5 A.

Further the advantage of flexible example is to make the calcining ability to turn over some, particularly under the situation of using the efflorescence solid fuel.

In sum, clearly, the shape of beam, whether have burner and the location of burner in beam, can change by the technician according to specific needs.

For example wheel 60,360 can slide on the insertion plane in the hollow chamber 39,339 of beam 26,326, and the end of beam has a falling ramp to arrive the correct working position of burner pipe with indication, and avoids the end to expose from correct position accident.Selectively, wheel can slide on the slide rail above the beam cavity bottom, and burner pipe is contained in the chamber.

Claims (32)

1. the beam (26 of kiln (1); 126; 226; 326), said kiln is used to calcine the treatment zone (2,3,4,5 that is positioned at said kiln; The bulk material of level attitude 6), wherein, said beam is formed by the high temperaturesteel manufacturing, it is characterized in that; Comprise wound oil cooling circuit, and wherein, said kiln comprises at least one calcining zone (3,4); Be combined with at least one combustion chamber (19,20) in the said calcining zone, said combustion chamber is provided with a vault construction (24), and said domes are supported by said beam.

2. beam (26 according to claim 1; 126; 226; 326), wherein, said wound oil cooling circuit comprises the interlayer (34) of the hollow that forms along the neighboring area of beam, and the cooling oil said interlayer of flowing through is taken away heat from all beam surfaces, make beam keep the constant optimal working temp.

3. beam (26 according to claim 1 and 2; 126; 226; 326), wherein, said beam is selected from the beam that burner beam, exhaust gas emission beam, combustion air are bled beam or formed by the arbitrary combination of above-mentioned beam.

4. beam (26 according to claim 1; 126; 226; 326), wherein, said beam prolongs along a longitudinal axis (Y-Y), and comprises at least one cavity (36; 261; 361), be suitable for combustion air and/or waste gas through and/or hold burner (35; 335), the longitudinal axis of said beam (Y-Y) is vertical with the vertical longitudinal axis (X-X) of said kiln.

5. beam according to claim 4 (26) comprises two cavitys (36), and it is separated by a wash plate (37), and said two cavitys all hold a burner (35) at least.

6. beam according to claim 4 (26) has at least a burner (35) individually or in groups to be centered on by the chamber (39) that combustion air is passed through in the said cavity.

7. beam according to claim 6 (26), wherein said chamber (39) is connected with said wash plate (37) through first separator (40), and said first separator (40) is perpendicular to said wash plate (37).

8. according to each described beam (26) among the claim 6-7, between the wall of said burner (35) and said chamber (39), include second separator (41) and contact with the wall of said chamber (39) to avoid said burner (35).

9. beam (26 according to claim 5; 326), comprise wheel (60; 360), said wheel is feasible can be with said burner (35; 335) insert beam and from said beam, pulling out.

10. beam (26 according to claim 4; 126; 226; 326), wherein, said burner (35; 335) prolong along the longitudinal axis (Y-Y) of said beam, and stop at different distance place along the longitudinal axis (Y-Y) of said beam.

11. beam (26 according to claim 10; 326), wherein, said burner (35; 335) comprise pipeline (38), the opening end (42 of said pipeline; 342) with the different positions that is positioned at said beam along the longitudinal axis of said beam on hole (43; 343) corresponding.

12. beam according to claim 4 (26), its xsect is T-shaped, and has termination (32) and beam body (33).

13. beam according to claim 12 (26), the termination of said beam (32) accommodate the interlayer (34) of the hollow that forms along the neighboring area of said termination, its with said beam body in the interlayer (34) that holds link to each other.

14. beam according to claim 13 (26), the beam body (33) of said beam comprises at least one cavity (36), and said cavity is surrounded by said interlayer (34).

15. beam (26 according to claim 4; 126; 226), include the opening (262) that is installed on a side of said kiln bottom, said opening is suitable for making combustion air or waste gas to pass through, and gets into the inside of said beam with the outside from said beam.

16. beam according to claim 4 (126), wherein, its transverse section roughly is half T shape, comprises a cavity (36) that is suitable for holding burner (35), and said burner has the opening end of only opening in a side of said half T shape (42).

17. beam according to claim 4 (226); Wherein, Its transverse section is roughly rectangular; Have the cavity (261) that an interlayer by hollow (234) defines, said cavity is used to make combustion air or waste gas to pass through, and said interlayer (34) is used to that cooling oil is passed through and the neighboring area of the said beam in said interlayer edge forms.

18. beam (26 according to claim 1; 126; 226), wherein, said beam is made by steel and said steel are selected from following grade of steel: P275N, P275NH, P275NL1, P275NL2.

19. beam (26 according to claim 1; 126; 226), wherein, said cooling oil is the thermal oil that is used to cool off boiler, heat exchanger.

20. beam (26 according to claim 19; 126; 226), wherein, said cooling oil can be selected from vegetables oil or MO.

21. beam (26 according to claim 20; 126; 226), wherein, said cooling oil is selected from the mineral substance thermal oil of the following trade mark: ESSOTHERM 300, TEXATHER 46 or SHELL THERMIA OIL B.

22. beam (26 according to claim 1; 126; 226), comprise the outer lining that thermal insulation material is formed.

23. beam (26 according to claim 1; 126; 226), also comprise a flow control system, said flow control system comprises variable valve and volume pump.

24. beam (26 according to claim 1; 126; 226), also comprise a flow control system, said flow control system has a dynamic measurement system and a static allocation system.

25. according to claim 23 or 24 described beams (26; 126; 226), also comprise the combustion-supporting air flow adjustable valve.

26. beam (26 according to claim 25; 126; 226), comprise a combustion air measuring apparatus.

27. be used to calcine the kiln (1) of bulk material; Comprise at least one calcining zone (3,4), be combined with at least one combustion chamber (19 in the said calcining zone; 20); Said combustion chamber is provided with a vault construction (24), it is characterized in that, said domes are by supporting according to each described beam among the claim 1-26.

28. want 27 described kilns according to right, wherein said kiln is the shaft furnace of annular, circular, square or square-section, two thorax kiln or accumulation of heat kiln.

29. be used to calcine the kiln of bulk material; It is the shaft furnace of the circle of building along vertical longitudinal axis, square or square-section; Comprise preheating zone, at least one calcining zone, cooling zone from top to bottom and go out strip; It is characterized in that said calcining zone comprises that at least one is according to each described beam (26 among the claim 1-26; 126; 226; 326), said beam is across the xsect of whole said kiln, thereby is embedded in the pending furnace charge.

30. according to the described kiln of claim 27,28 or 29 (1), wherein, said beam (26; 126; 226; 326) radially arrange that be positioned at along on one or more level attitudes of the vertical longitudinal axis (X-X) of said kiln, the longitudinal axis of said like this beam (Y-Y) is vertical with the vertical longitudinal axis (X-X) of said kiln for two one group.

31. according to the described kiln of claim 27,28 or 29, wherein, said beam be single or radially two one group, along the vertical longitudinal axis of said kiln, said relatively axis staggered arrangement is on one or more level attitudes.

32. be used to calcine the kiln (1) of bulk material, said kiln is the shaft furnace type of annular cross section, along vertically longitudinal axis (X-X) prolongation, comprises preheating zone (2) from top to bottom; Last calcining layer (3), its arranged beneath has first combustion chamber (19); Following calcining layer (4), its arranged beneath has second combustion chamber (20); Cooling zone (6); And go out strip (7), and it is characterized in that said first combustion chamber (19) and second combustion chamber (20) are equipped with vault parts (24), said vault parts are by beam (26; 126; 226; 326) support, said beam is by the high temperaturesteel manufacturing, and by the heat-conducting fluid cooling, said heat-conducting fluid is selected from water, biphenyl and verivate thereof, four aryl silicon ester, dissolved salt mixture, glycerine, silicone grease or naphthalene derivatives.

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