CN102159889A

CN102159889A - Method and device for feeding conveyable materials to reaction furnaces

Info

Publication number: CN102159889A
Application number: CN2009801291139A
Authority: CN
Inventors: 库尔特·希姆尔弗洛恩德波茵特纳
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-05
Filing date: 2009-06-05
Publication date: 2011-08-17
Anticipated expiration: 2029-06-05
Also published as: CN102159889B; WO2009146935A3; WO2009146935A2; EP2297519A2; EP2297519B1

Abstract

The invention relates to a method and a device for feeding conveyable materials to reaction furnaces by means of a hollow space that feeds into the furnace space by way of a connecting tube, said hollow space being sealed air-tight from the exterior air. A tube configured as a lance (6) is fed from the hollow space, which is sealed air-tight from the exterior air, into the furnace space (7), said tube having a cross-sectional area that is less than the conveying line connected upstream, wherein an air or gas stream flows into the furnace space (7) from the region of the hollow space upstream of the lance, said space being sealed air-tight from the exterior air, and is conveyed into the starting region of the lance by way of a mechanical conveyor (5, 15) operating at zero pressure.

Description

In reacting furnace, carry the method and apparatus of the material that can carry

The present invention relates to reacting furnace

The interior conveying

Can carry

The method and apparatus of material.

" material " also comprises composite material in the present invention." can carry " in the present invention the meaning to be meant that material can flow and/or can spray and/or can topple over and/or present pasty state.Especially, principle of the present invention can advantageously be applied in the furnace charge of residue formation that pulverize, dry or that mix with liquid is provided in the combustion furnace.Favourable application is in manufacture of cement fuel to be provided in the stove, perhaps is delivered into the shaft furnace pressure area that bears hyperpressure with respect to atmospheric pressure in pig iron manufacturing.

Material to be carried can comprise solid particle and liquid.The Size Distribution of solid With its character, and the character of contained liquid and component can change on a large scale.Contained solid can be or contain hard particle (for example metallic particles, mineralogical composition, siliceous composition) and softer particle, such as natural or staple fibre, textile composition, animal and plant residue, plastics and foamed plastics, or the like.Liquid is different (water, oil, varnish, adhesive, other chemicals, tar ...) in also can be on a large scale.

Especially, pulverize the bulk material (Sch ü ttg ü tern) of gained by rubbish as light fraction, it is actually dry, and contain quite high fibre fractionation or fibrous composition, and contain metal hardly, by the present invention, make the input of this bulk material be greatly simplified.This class bulk material has quite high calorific value in the ordinary course of things for its quality.

AT 502 048 B1 have described the method and apparatus that bulk material is transported to processing unit (plant), have solid-state and liquid composition in this bulk material.After when bulk material at first is being transported to device with the conveyer of pressurized operation not under the environmental pressure near, pressurizes and deliver into device through narrow spray gun thus by pump.In fact this method only can just can be used during pump pressure when material, and for many bulk materials, those bulk materials of liquid containing component hardly particularly, and this method also is not suitable for.

DE 199 09 132 A1 have described the conveying of bulk material, and it is by means of the gas transportation section from the reservoir vessel to the cupola furnace.Reservoir vessel and transfer pipeline

Than under the hyperbar as the cupola furnace.From the transfer pipeline effluent air bulk material is transported in the stove with high speed.Because such relation in fact also can not be flashed back to induction system from stove.The problem that such make exists is that the excellent degree of function has very strong dependence to the characteristic of bulk material, and is accompanied by bulk material and has a lot of air to be brought into the cupola furnace, makes so the accurate control of burning is become more difficult.Generally speaking, reservoir vessel is not the sleeve position place that is located immediately at by the furnace wall, and typically apart from it ten meters to 100 meters.Can supply for a plurality of sleeve position from a reservoir vessel by the furnace wall.The conveying of gas pipeline that will rectificate, the skew of discontinuous straight line like this, minimum or when in the cupola furnace pressure oscillation being arranged, course of conveying becomes and is very easy to be disturbed in the change of the material behavior of material to be transported thus.

EP 0 060 137 A1 have introduced the gas transportation section of granular fuel.Consistent in air pressure in the tank of material and the transportation section.Material flows out from tank, and import the gas transportation section subsequently will be by as the quantitative conveying worm of conveying worm (Dosierschnecke) work Realize.Therefore, than aforementioned method, to less depend on the characteristic of bulk material at least to the controllability of input quantity of material in the transportation section.Then have in other respects with DE 199 09 132 A1 in same problem.

EP 48008 A1, EP 299231 A1, EP 302047 A1, WO 9746719 A1, WO9911825 A1 and WO 200148251 A1 are relevant with the so-called Corex method that is used for raw steel production.From the raw material memory, the granular feedstock that is easy to spray is input to the reaction compartment that is arranged in raw material memory below through the whereabouts section that is formed by airtight pipeline.Therefore, not to have realized that raw material flows out (Austrag) from the metering of raw material storage container, the quantitative conveying worm of carrying by short straight section in the horizontal direction realizes that raw material enters the metering input of reaction compartment from vertical whereabouts section exactly.

Showed the application that quantitative conveying worm is same among US 17 94455 A, but wherein furnace inner space is not to be under the pressurized conditions yet.

EP 0 662 926 B1 and DE 102 02 490 C1 have introduced by the conveying of conveying worm from storage container that lower pressure is wherein arranged to the stove that elevated pressures is arranged.The conveyor zones of conveying worm will be provided with the zone of the cross-sectional area that reduces, and waits to carry this area of material complete filling, so just should be able to realize desired sealing (Abdichtung) between two zones.This method may be only works to high bulk material of moisture content and relatively low pressure, and this is because otherwise do not reach enough good compactness.Reduce its specific area (spezifische by compacting (Verdichtung) material

), brought the difficulty of burnup in stove (Abbrand) thus.

DE 2 249 453 A1 have showed by two conveying worms granular fuel have been delivered to conveying equipment in the furnace inner space under the pressurized conditions.First conveying worm material never extraction place under the superpressure condition see off, and they are compressed into closely knit embolism (Pfropfen) in its end.Scrape broken embolism at the sole edge once more by equipment, scrape broken material and sent in the stove by second conveying worm.Second transportation section under stress, its pressure is the same with the pressure of furnace inner space.Generally speaking, the method for introduction is only carried the group of material to very closely knit waiting and is only worked when the low pressure, and also necessarily requires very many monitoring and management.

Basic task of the present invention is, sets up the method and apparatus that is used for to reacting furnace and the material that conveying can be carried in reacting furnace, also has superpressure in reacting furnace.With respect to the fluctuation of Size Distribution and some other material behavior of the composition of waiting to carry material, particle, conveying should play a role reliably.Its particle has the drying material of big coefficient of friction also should be able to be transferred for tube wall etc.Should mandatory requirement do not carry the material conveying gas that component is very high or carry air to introduce reacting furnace with waiting.

Should conscientiously calculate and concern by position very complicated usually in the passage area of furnace wall, pressure and temperature.

When very long transportation section can include direction change, the section cross section of rising and dispensing point, conveying also should play a role safely and reliably.

For finish this task be recommended in one with the isolated cavity of outside air airtight (druckdicht) in carry material to be carried to reacting furnace, wherein in cavity, in fact have than the higher at least slightly air pressure of furnace pressure.Here, cavity leads to furnace inner space through connecting pipe, and this connecting pipe is formed as spray gun, it have than the cross-sectional area that reduces to some extent along separate routes of conveying.In the beginning zone of spray gun, material to be carried relies on not the mechanical conveying equipment of pressurized operation to be sent to.

Air or air-flow are owing to superpressure flows to the furnace inner space from passing through spray gun with the airtight isolated cavity of outside air.

Material be not through pump be exactly through gate and with the running status of isolate from outer air under the reservoir vessel input form in the cavity of transportation section.In the design of using gate, preferably storage container itself is formed as gate.

Thus, realized with the cavity of isolate from outer air in conveying, the air pressure in cavity will be higher than furnace pressure at least a little, the danger of flashing back from stove is not that not exist fully be exactly can be controlled well.In cavity, equipment as rotary valve, movable flap (Pendelklappen), the sensor that flashes back, it can be triggered to isolate furnace inner space, or the device of a similar effect, they should avoid flashing back and resilience from furnace inner space, and under the general work situation, should allow material to be carried to pass through, and it is unnecessary that they oneself just become, and perhaps they can be realized than cost savings ground more simply and therefore.In transfer pipeline, conveying equipment must be in face of the furnace pressure work that raises, and this just makes to carry and is very easy to.

Because the spray gun of introducing by the furnace wall has smaller cross-sectional area, so the area requirements on the furnace wall is very little, and from the counter-pressure of stove do not produce spray gun from stove press from, excessive power.Cross spray gun from the air in spray gun zone or air communication and flow to method in the stove by making, spray gun can cool down.

In a very favorable embodiment, wait to carry material with the cavity of the airtight isolation of outside air with interior, be arranged in away from the transfer pipeline zone at reacting furnace place and move by the mechanical conveying equipment of pressurized operation not.With the airtight isolated cavity of outside air in, not the mechanical conveying equipment of pressurized operation not only be applied in directly from reservoir vessel output or directly input advance reacting furnace, and it is whole apart from some sections number Mi Yuan, transport path with reacting furnace especially also to be applied in storage container.Have sharp part especially and also be, this conveying equipment be applied in upwards and/or crooked section zone on, and/or before the branch point of transportation section and afterwards because there are more problems in other conveying equipments in this class section zone.

The mechanical conveying equipment of pressurized operation is not meant in the present invention, conveying function and do not require what transport and wait to carry on the material and exert pressure for their part along the transportation section, do not require that perhaps gaseous state or liquid pumped (conveying) medium move material to be carried, realize carrying but wait to carry material in fact directly to contact therein by surface with the conveying equipment motion.The mechanical conveying equipment of pressurized operation does not cause transfer pipeline to be assigned to the different pressures zone usually.An example of this type of conveying equipment is a conveyer belt.Non-pressurized conveying causes not relying on the length of transportation section, and the pressure that is transferred in the material does not have change, and the pressure that perhaps surrounds in the gas of material does not change yet.Therefore it is different from the pressure-bearing conveying, might also can not have problems for forming transportation section long and rising and/or crooked especially and/or that twist.Therefore, therefrom transport the reservoir vessel of material, it also can be placed in the place very far away apart from reacting furnace, can avoid the space problem at reacting furnace place thus.

Carry with the mechanical conveying equipment of this not pressurized operation particularly advantageously to be, carry logistics in course of conveying, be broken down into a series of little, between the be separated from each other component (Teilmenge) of motion.Thus, conveying equipment refers to for example chain-linked conveyer, conveying worm, extraction conveyer, the ribbon conveyer that push rod is arranged, cup type conveyer, or the like, in these conveyers, all wait to carry material to be divided into component, and these components not be used in each other to exert pressure between the component that order links to each other and just can just can move by the motion parts of conveying equipment.(different in this, such as, the component of carrying in each stroke by piston pump successively enters pipeline subsequently, and for indispensable at ducted conveying function be that these transport portions are exerted pressure each other).

By material is dropped into cavity through fire door and reservoir vessel, rather than through the method for pump, material just no longer needs to carry out causing the compression of burnup degradation, and needs less management.When reservoir vessel self is preferably formed gate, reservoir vessel alternately links to each other with outside air and once and in this case is filled, other times then break away from outside air, and are connected to and the airtight isolated cavity of surrounding air, and emptying therein.

With the cavity of isolate from outer air in reacting furnace, carry the material that can carry by the mechanical conveying equipment of pressurized operation not, with this transmission with as spray gun connecting pipe that form, that enter furnace inner space to make up is particularly advantageous, described spray gun have its with respect to the cross-sectional area that reduces of transfer pipeline.And this all is highly significant to each other specific embodiment by the sleeve pipe of furnace wall almost.

By the mechanical conveying equipment of pressurized operation and the combination of air or air-flow are not sent material to be carried to spray gun, and make it pass spray gun, so both can avoid the decay of mechanical conveying equipment performance, promptly relatively slowly and the hear resistance variation, also can avoid the decay of gas transfer pipeline performance, i.e. air or the gas demand of easily stopping up and raising, and made full use of the strong point of every method.

Preferably material is transported to the front portion of spray gun, because this structure is simple and easy and reliable by conveying worm.

Preferably with Shaftless screw conveyor material is transported to the front portion of spray gun in addition, because can avoid well thus stopping up, and air or air-flow are subjected to obstruction seldom when entering spray gun.

Also maybe advantageously, material is transported to the front portion of spray gun, sends the material that is dropped into to and broken up (auflockern) well because can make by such impeller by impeller.

By the spray gun porch, never outstanding, sharp-pointed hollow main body on the side of the mechanical conveying equipment of pressurized operation

The tip, and by air or gas are flowed out from one or more openings in the zone at the tip of main body, wherein air or the gas method under the condition that the pressure higher than furnace pressure is arranged can be avoided well in the obstruction danger of spray gun porch.Sharp-pointed main body can form by a hollow shaft of the conveying worm of driving (achsgef ü hrt).

With the airtight isolated cavity of outside air in preferably also carry in that spray gun is anterior by no axial screw conveyer.Can on very long section, save so local, save ground, space, reduce control ground and have the high security ground of avoiding stopping up to transmit the material of different conveying characteristics with very big bandwidth.

By using the compressed result of material during the mechanical conveying equipment of pressurized operation can not obtain moving in transfer pipeline, and coincidence is opposite, and its change is broken up.Breaing up advantageously to influence the burnup phenomenon that is transferred material in the stove.

Non-pressurized conveying causes not relying on the length of transportation section, and the pressure that is transferred in the material does not change, and the pressure that perhaps surrounds in the gas of material does not change yet.Therefore it is different from the pressure-bearing conveying, might not can have problems for the transportation section that forms very long and that rise and/or crooked and/or distortion.

First additional aspect of the present invention relate to a kind of by with outside air airtight isolated, and lead to the cavity of furnace inner space is carried the material that can carry in reacting furnace method through connecting pipe, wherein, material with the reservoir vessel that with outside air airtight isolated cavity link to each other is dropped into cavity with its inner space in working order the time through gate, and wherein material to use at least one not the mechanical conveying equipment of pressurized operation at least one section part, carry, this section part is not only away from storage container but also away from reacting furnace.

In the favourable design of this additional aspect, material with the airtight isolated cavity of external air pressure in by no axial screw conveyor delivery.

In other favourable design of this additional aspect, form as spray gun with the connecting pipe of the airtight isolated cavity of outside air to furnace inner space, than transfer pipeline its have the cross-sectional area that reduces, and air or air communication are crossed spray gun and are flow to furnace inner space.To this, in favourable design, material is conveyed into the beginning zone of spray gun by the mechanical conveying equipment of pressurized operation not.

In other designs of this additional aspect of invention, in the raw steel manufacturing residue and/or residue are transported to the pressure area of shaft furnace (Schachtofen).

Second additional aspect of the present invention relates to a kind of by airtight isolated with outside air, and in reacting furnace, carry the conveying equipment of the material that can carry through the cavity that connecting pipe is led to furnace inner space, wherein this equipment comprises material gate and storage container, wherein storage container descends in working order and links to each other with the airtight isolated cavity of outside air, and wherein, at least one not mechanical conveying equipment of pressurized operation is installed at least one section zone in this cavity, and this section zone is not only away from storage container but also away from reacting furnace.

In the favourable design of this second additional aspect, higher air or gas pressure in the reacting furnace arranged in the cavity, and forms spray gun to the connecting pipe of furnace inner space, its have than the littler cross-sectional area of transfer pipeline.

In other designs of second additional aspect of the present invention, in the cavity that constitutes connecting pipe spray gun, that arrive furnace inner space, the not mechanical conveying equipment of pressurized operation is installed, its effect extends to the beginning zone of spray gun.In a favourable design, the mechanical conveying equipment of pressurized operation is not a Shaftless screw conveyor.In another favourable design, the mechanical conveying equipment of pressurized operation is not an impeller.

In other designs of second additional aspect of the present invention, and be full of inert gas in the airtight isolated cavity of outside air.To this, in a favourable design, comprise the storage container that forms blender with the airtight isolated cavity of outside air.

In other designs of second additional aspect of the present invention, the material that is transferred is residue and/or residue, and the pressure span of shaft furnace is led in the transportation section in the raw steel production.

Embodiments of the invention and other favourable details can illustrate by accompanying drawing.

Shown in it:

Fig. 1: the schematic diagram of first embodiment.

Fig. 2: the schematic diagram of second embodiment.

Fig. 3: the schematic diagram of the 3rd embodiment.

Fig. 4: the schematic diagram of the 4th embodiment.

Reference numeral shown in the accompanying drawing is:

1 is delivered into the material in the stove

2 storage containers (separating with outside air under the duty)

3 conveying worms

Send the space in 4 transportation sections

The conveying worm of 5 transportation section ends

6 spray guns towards furnace inner space

7 furnace inner spaces

7.1 furnace wall

8 gas transportation sections

The pump of the material that 12 pump pressures are to be carried

13 flexible conveying worms

Send the space in 14 transportation sections

15 impellers

21 air pumps

22 air pumps

23 compressed air pipings

24 compressed air pipings

25 air pumps

26 air pumps

27 air pumps

33 conveying worms

Pressure in the p1 transfer pipeline

Pressure in the p2 furnace inner space

According to Fig. 1, no matter the material 1 that flows out from storage container 2 in which way is transported to by one or more conveying worm 3 and submits space 4, and uses conveying worm 5 subsequently material 1 is transported in the furnace inner space 7 through the opening the furnace wall 7.1 by the spray gun 6 that is formed pipeline from submitting space 4.Storage container and transfer pipeline all and isolate from outer air, and it has the same high air pressure of pressure stage p2 (perhaps gas pressure) p1 with furnace inner space 7 at least.

Conveying worm 3,5 streams with material in the transfer pipeline 1 are divided into aliquot batching (Charge), and conveying worm 3,5 is in respectively between two conveyer helixes, and advance material along throughput direction.So the compression of material can not occur, transmit and do not have pipeline, wherein lay respectively at the friction that material after the quite long section and material before must resist on the tube wall and continue propelling because be different from pressure-bearing in pressure pipeline.Storage container 2 or the applicable pump that replaces can be placed in the far place of reacting furnace that should carry into apart from material.Therefore, can avoid space problem in the reacting furnace near zone.

Can replenish well by the transportation section where necessary according to mechanical conveying equipment of the present invention, not pressurized operation, this transportation section is to carry gas.For a plurality of reason-reaction forces, space lack, the burnup performance-when the cross-sectional area of the pipeline that is denoted as spray gun 6 is as far as possible little, described pipeline enters in the stove 7 by furnace wall 7.1, so in most of the cases is very favourable.Therefore, need treat the very high speed of mobile bulk material herein than common transfer pipeline.Therefore,, advantageously, in this class spray gun 6, at least not only carry by mechanical conveying equipment for space problem with for the reason of the heat that in this class zone, exists, but at least by carrying gas to support conveying.

In example, carry gas to enter transfer pipeline, and finally flow away with the pressure stage p2 in the furnace inner space 7 by spray gun 6 by

pump

21 and 22 according to Fig. 1 and Fig. 2.Because the spatial relationship of the high-temperature of high furnace pressure and porch existence, this feeding manner are favourable for the pressure area that fuel or reaction material is fed in shaft furnace in the raw steel production especially.

For fear of obstruction at spray gun 6 entrance area places, use a conveying worm 5, the internal diameter of its diameter and spray gun 6 is complementary, so that material is put into the spray gun from the conveying scope that big cross-sectional area is arranged, this spray gun has very little comparatively speaking conveying cross section.Because the diameter that it is less, conveying worm 5 must be relative to rotating fast.Under high spiral revolution, because centrifugal force problem that cause, that the spiral spacer space is filled by material to be carried can be improved substantially by making the pressure area p2 of air stream from the pressure area p1 inflow stove of conveyance conduit.When spray gun 6 only simply linearly the time, only need conveying worm 5 material to be transported to the beginning zone of spray gun 6.By the very fast rotation of conveying worm 5, material is broken up to a great extent, has improved the burnup performance thus.

On the position of conveying worm 5, impeller 15 (Fig. 3) can be used the not mechanical conveying equipment of pressurized operation of conduct.Atwirl in this motor-driven, use is equipped with blade or similarly at the wheel of the part of peripheral projection, the stream of material to be carried is transported near the wheel, and resolves into the independent aliquot batching (Einzelchargen) of separation by impeller or similar portions, and is dished out by centrifugal force.

Thus, the transmission of the input position (Einbringungsstelle) of material from storage container 2 to stove mainly realizes by the conveying equipment of machinery, and by pressure or compressed air, conveying function to a great extent and do not rely on the concrete property of waiting to carry material unlike known make.

Thus, according to Fig. 1 and Fig. 2 by only in the last part of transfer pipeline by the conveying gas that is fed forward, also can be set very for a short time whenever necessary with the amount of the proportional required conveying gas of amount of material to be carried.Thus, transmit than depending critically upon the material of carrying air, conveying machinery device meeting little effect is to the control of reaction in furnace.

Be according to the modification of the embodiment of Fig. 2 and difference according to the embodiment of Fig. 1, flexible conveying worm 13 had been installed before last conveying worm 5, this conveying worm 5 has obtained the support of the air-flow carried in spray gun 6.Conveying worm 13 is made of the flexible pipe of flexible Shaftless screw conveyor and this flexible Shaftless screw conveyor of encirclement.This embodiment is favourable than the form of implementation of rigidity, because just can carry out the management work that the input often needs in reacting furnace so more quickly.

The compressed air piping 24 of mark shows by a dotted line in Fig. 2, and carrying air is not directly to be transported to transfer pipeline in spray gun, has been transported to the section start of the flexible part in transportation section exactly.If situation needs, flexible conveyor section also can only realize with flexible pipe, and the conveying worm of wherein not installing.

Fig. 3 has drawn another modification of the present invention, wherein from the perimeter with pressure p 0 to the input of carrying scope p1 not by the reservoir vessel 2 of filling discontinuously, but continuously or the realization of approximate continuous ground by enough airtight pump 12.The pump of this type of purposes for example can buy by the title of solid piston pump.Pump 12 wait to carry material by flexible pipe deliver to be formed in this example impeller 15, the mechanical conveying equipment of pressurized operation not.This motor-driven is atwirl, use is equipped with blade or similarly at the wheel of the part of peripheral projection, the pipeline that forms with material of pressure by pump 12 is broken into the aliquot batching of separation again where necessary, and it is thrown to spray gun 6, is transported in the furnace inner space 7 by this spray gun 6.Material enters and the motion by spray gun 6 also needs the auxiliary of air stream, the generation of air stream be by in transfer pipeline by pump 27 air or gas compress into spray gun 6 the method realization.Other mechanical conveying equipment can also be set between pump and reacting furnace input position certainly.

Fig. 4 shows, and is not precluded within the transfer pipeline of each and isolate from outer air, and material is also by carrying gas to carry through segment section 8.Particularly this all is very significant for very wide transportation section and uncomplicated material.Preferably, for there not being section part branch and straight line, can setting up good gas and carry, just by the conveying of carrying gas.So can not blow into too much air yet, may paint, carry air right side after arriving this section 8 to be absorbed by pump 26 as Fig. 4.

The input that particularly ought enter furnace inner space can also realize by bigger cross-sectional area, and when being not extra high temperature with having of the part furnace inner space of input range adjacency, the input that material enters in the stove also can realize under the condition of input air not having.

The method according to this invention and equipment according to the present invention is particularly advantageous is, it can be used in granular, dry or moistening waste material and residue input reacting furnace, because the density of these materials or mixture is very big, fluctuation that determine, that can have influence on the physical characteristic of " flowability " and " conveying " before this destroys hardly, and because the method according to this invention or equipment according to the present invention still play a role very reliably with respect to this fluctuation.

The method according to this invention and equipment advantageous particularly part according to the present invention are that it can be applicable on the stove, need should be mentioned that the stove that is used for manufacture of cement, especially for the blast furnace of raw steel production.For these two kinds of stoves, residue and waste material can be useful and the burning of environmental sound ground, and receive the bonus effect of saving fossil fuel.By the method according to this invention with according to equipment of the present invention, multiple class, different residues and waste material can be transfused under the condition of using economy.For in the special rigorous environment in blast furnace place, method of the present invention or equipment according to the present invention are having good especially effectiveness aspect the reliability of function.

At least the transportation section, with the zone of the cavity of isolate from outer air in to be provided with inert gas environment be favourable, this cavity is positioned at away from spray gun 6 places, and carries out non-pressurized machinery therein and carry.Can avoid fire and blast in the transfer pipeline so at an easy rate.For example can import the air that an amount of nitrogen or carbon dioxide or oxygen content reduce continuously in reservoir vessel 2 and in the transfer pipeline by pump 21 according to Fig. 1 and Fig. 2.In addition, in case need in the unit interval, more carry the conveying gas of gas or other classes, can be supplemented with the pump 22 that carries out pump pressure pointedly at the transfer pipeline end extraly for spray gun 6.

All requirements under many applicable cases, the material that is made of different single components, wait to be transported to reacting furnace is admixed together, and/or makes their reach the state that can carry or the state that keeps it to carry through mixing or stirring.Carry out when mixing or being stirred in the reservoir vessel 2, and fill with inert gas according to described method when reservoir vessel 2, lighting with explosion danger in this class mixing or whipping process just can be avoided at leisure so.Reservoir vessel 2 self can be embodied as rotation, correspondingly with outside air airtight or might be cylinder mixer under the superpressure condition, and/or comprise agitator.

Claims

1. method of in reacting furnace, carrying the material that to carry, this method is by airtight isolated with outside air, the cavity that leads to furnace inner space by connecting pipe is carried the material that can carry in reacting furnace, it is characterized in that, carry described material (1) by the connecting pipe that is formed spray gun (6), so that described material (1) is from entering described furnace inner space (7) with the airtight isolated described cavity of outside air, wherein, described spray gun has the cross-sectional area that the transfer pipeline that connects with respect to the upstream reduces, wherein, air or air-flow flow to described furnace inner space (7) from the upstream that is positioned at described spray gun and with the zone of the airtight isolated described cavity of outside air, and by the mechanical conveying equipment (5 of pressurized operation not, 15) be transported in the beginning zone of described spray gun.

2. the method for claim 1 is characterized in that, is transported to by no axial screw conveyer (5) in the beginning zone of described spray gun (6).

3. the method for claim 1 is characterized in that, is transported to by impeller (15) in the beginning zone of described spray gun (6).

4. the described method of one of claim as described above, it is characterized in that, never be extruded with the tip of sharp-pointed hollow main body on the side of the described mechanical conveying equipment of pressurized operation in the porch of described spray gun, and air or gas flow out from one or more openings in the zone at the tip of described main body, and the higher pressure of air pressure than described furnace inner space (7) is arranged in described main body.

5. the described method of one of claim as described above, it is characterized in that, described material is dropped in the described cavity through gate and reservoir vessel (2), the inner space of described reservoir vessel is descended in working order and is linked to each other with the airtight isolated described cavity of outside air, and wherein to use at least one not the mechanical conveying equipment of pressurized operation (3,13) at least one section part, carry, described section part is not only away from described storage container but also away from described reacting furnace.

6. method as claimed in claim 5 is characterized in that, with the airtight isolated described cavity of outside air in carry by Shaftless screw conveyor (3,13).

7. the described method of one of claim as described above is characterized in that waste material and/or residue are transfused to reacting furnace.

8. method as claimed in claim 7 is characterized in that material is transfused to the pressure area of shaft furnace in the raw steel manufacturing.

9. equipment of in reacting furnace, carrying the material that to carry, this equipment is by isolated with the outside air hermetic seal, lead to into the cavity of furnace inner space by connecting pipe and in reacting furnace, carry the material that to carry, it is characterized in that being formed the connecting pipe of spray gun (6), described spray gun (6) is from leading to furnace inner space (7) with the airtight isolated cavity of outside air, wherein said spray gun has the cross-sectional area that the transfer pipeline that connects with respect to the upstream reduces, in the upstream that is positioned at described spray gun and with the zone of the airtight isolated described cavity of outside air air pressure or the gas pressure higher with respect to described furnace inner space are arranged, in described cavity, the front portion of described spray gun (6) is equipped with in the zone effect of beginning of described spray gun, the mechanical conveying equipment (5 of pressurized operation not, 15).

10. equipment as claimed in claim 9 is characterized in that, conveying worm (5) is installed in the beginning zone of described spray gun (6).

11. equipment as claimed in claim 10 is characterized in that, described conveying worm (5) does not have axle.

12. equipment as claimed in claim 9 is characterized in that, impeller (15) is installed in the beginning zone of described spray gun (6).

13. as the described equipment of one of claim 9 to 12, it is characterized in that, described equipment comprises the gate and the storage container of described material, wherein said storage container descends in working order and links to each other with the airtight isolated described cavity of outside air, and at least one not mechanical conveying equipment of pressurized operation (3,13) wherein is installed at least one section zone in this cavity, and described section zone is not only away from described storage container but also away from described reacting furnace (7).

14. equipment as claimed in claim 13 is characterized in that, the described mechanical conveying equipment of pressurized operation (3,13) is not a Shaftless screw conveyor.

15. as the described equipment of one of claim 9 to 14, it is characterized in that, with the airtight isolated described cavity of outside air in be filled with inert gas.

16. equipment as claimed in claim 15 is characterized in that, comprises the reservoir vessel (2) that is formed blender with the airtight isolated described cavity of outside air.

17. as the described equipment of one of claim 9 to 16, it is characterized in that, never be extruded with the tip of sharp-pointed hollow main body on the side of the described mechanical conveying equipment of pressurized operation (5,15) in the porch of described spray gun (6), described tip is provided with at least one opening, and has pressure to be higher than the air pressure of air pressure in the described furnace inner space (7) in sharp-pointed hollow described main body.

18., it is characterized in that the material that is transferred of input reacting furnace is residue and/or waste material as the described equipment of one of claim 9 to 17.

19. equipment as claimed in claim 18 is characterized in that, leads to the pressure area of shaft furnace at spray gun (6) described in the raw steel production.