CN109844435A

CN109844435A - Emission-control equipment and processing method

Info

Publication number: CN109844435A
Application number: CN201780064145.XA
Authority: CN
Inventors: 朴钟寅; 赵秉国; 郑殷镐
Original assignee: Posco Co Ltd
Current assignee: Posco Holdings Inc
Priority date: 2016-10-18
Filing date: 2017-10-13
Publication date: 2019-06-04
Anticipated expiration: 2037-10-13
Also published as: TW201819756A; KR101796083B1; EP3531052A1; EP3531052A4; WO2018074783A1; TWI663323B; CN109844435B; JP2019534951A

Abstract

The present invention provides emission-control equipment and applied to the waste gas processing method of the emission-control equipment, the device includes: pump unit, the pump unit extends along the direction of travel of trolley from the lower part of trolley and has race way separated from each other and discharging area, and trolley is mounted to that raw material can be handled while advancing along multiple sections；And stop member, the stop member are mounted on the boundary between race way and discharging area to seal the gap between trolley and pumping part, thus, it is possible to inhibit or prevent waste gas stream interfering with each other due to the Negative Pressure Difference between each section in equipment.

Description

Emission-control equipment and processing method

Technical field

This disclosure relates to emission-control equipment and processing method, and more particularly, to be able to suppress or prevent due to The emission-control equipment of interference between waste gas stream caused by the difference between negative pressure in the multiple regions of equipment and processing side Method.

Background technique

Sinter is produced using fine iron ore, lime stone, coke and anthracite as raw material, and then sinter is loaded onto height In furnace.In the blast furnace processing for producing molten iron, sinter is loaded into blast furnace together with iron ore and coke.Sinter Fine iron ore is sintered into the size used suitable for blast furnace by production technology.Sintering ore production technology include prepare raw material mixture and Mixture is heat-treated to sinter.Mixture is heat-treated to sinter usually to execute in sintering machine.

It is heat-treated by the mixture to raw material to produce the process of sinter and execute as described below: in trolley (truck) while moving on the direction that sintering machine extends, the mixture of raw material is loaded into sintering trolley with constant altitude On.The superficial layer of the mixture of raw material is lighted by igniting unit to form raceway zone (raceway) or combustion zone.Use exhaust gas Processing unit forces air to be input to downwards in sintering trolley so that raceway zone moves down, thus to the mixture of raw material into Row sintering, that is, production sinter.Then via in the unloading area that sintering machine is set crusher and cooler by sinter It is broken and cooling.Broken and cooling sinter is divided into the particle for being suitble to the 5mm used in blast furnace to 50mm, is then shifted To blast furnace.

For improve sintering machine function and energy-efficient sintered discharge gas circulating technology by Kinsey in 1975 in the U.S. AIME on announce.In this publication, cooling type sintering machine on a kind of machine is proposed, cooling type sintering machine has it on the machine The length of middle sintering machine is extended and cooler is added to the structure of sintering machine.This configuration includes sintering region and cooling Region.Gas is individually aspirated from sintering region and cooled region.Therefore, by the high-temp waste gas that will be discharged from cooled region as Hot-air is recycled in sintering region, proposes energy-saving sintering model.Then, during the 1970s and the eighties, Japan has submitted similar research or patent application with Europe.

It, can be by recycling the sensible heat of exhaust gas to be used to burn when sintered discharge gas circulating technology is applied to sintering machine processing It ties to reduce the required energy of sintering.After the first oil crisis, in the Japanese county Ge Shan in 1984, via cooling on machine Type sintering machine improves 4- sintering, then, the air recycling in the cooling segment of sintering machine is empty to be further used as sintering Gas.In addition, making the waste gas circulation from cooler to sintering machine using sintered discharge gas circulating technology in nine divisions of China in remote antiquity and Lu Dao.? NKK in 1991 is mounted with the second air blower to improve suction capactity and the in turn productivity of raising Fushan 4- sintering, and And recycled by the sinter exhaust unit of the exhaust gas of the second air blower recycling towards sintering machine, thus by being mounted on sintering machine In boiler improve Exposure degree ability, while increasing gas suction capactity.

The above method is intended to the amount by the way that the sensible heat transfer of exhaust gas to sinter layer or ignition furnace to be reduced to exhaust gas, while purport In energy conservation.For this purpose, sintered discharge gas circulating technology is applied to sintering machine process.

Simultaneously as the implementation of environmental policy regulation, the processing for handling oxysulfide SOx and nitrogen oxide NOx is set Standby investment and operating cost recently becomes burden.Therefore, the steel mill of each country is in response greenhouse gases regulation, and passes through It recycles the exhaust gas from sintering machine to the maximum extent to reduce energy consumption, while reducing the cost of investment for being used for pollution control equipment.

For example, Kitakyushu 3- sintering of NSC in 1992 while keeping the productivity and quality of sinter by improving Exhausted air quantity is reduced 28% to reduce the amount of exhaust gas by sintering machine.In 1994, German Lurgi develops EOS, and (discharge was excellent Change sintering, Emission Optimized Sintering) technology, and the Hoogovens that EOS technology is applied to Holland is sintered The amount of exhaust gas is reduced about 40% by factory.These cases are adapted to conform to international environment regulation, but the technology of these cases is not yet complete At.

In addition, since nineteen ninety-four, the FUTSU technological experiment room of NSC, the Voest-Alpine of Austria, Australia BHP and the Centro Sviluppo Materiali (CSM) of Italy have been devoted to make sintering processes to adapt at environmental protection Reason.Such a two stages ignition sintering method is being studied by Sumitomo company: on machine in cooling type sintering machine, raw material is independent It is loaded into upper stage and lower stage, and the material in upper stage and lower stage is lighted and is sintered, wherein come from upper stage Exhaust gas be used further to sintering lower stage material.

In order to improve the productivity of sinter, it is empty to increase sintering to there is the air blast capacity increased in emission-control equipment The method of air volume, and the method for being sintered volume of air is increased by the firing region of expansion sintering machine.In this regard, when When the air blast capacity of emission-control equipment increases, it is necessary to further extend for carrying out clean machine, and this to exhaust gas Outside, the maintenance cost of emission-control equipment increases.

Therefore, the Pu 4- sintering of POSCO has had been incorporated into sintered discharge gas circulating technology.In this regard, in order to cope with by In the increase of the inner capacities of blast furnace and high tapping handle and to the demand growing day by day of sinter, the firing region of sintering machine Extend and therefore sintering air mass flow correspondingly increases.Therefore, increase to cope with sintering air mass flow, it is another to be used for exhaust gas The air blower of circulation is added to emission-control equipment.

In this regard, when the maximum position of the ventilation resistance of sinter layer is defined as Abgasabsaugung position, the drum that adds Blower aspirates exhaust gas using high pressure at above-mentioned defined position, and the consumption of exhaust gas towards the oxygen of sinter layer is relatively small number of Rear end supply.Since the exhaust gas being drawn into the air blower added is recycled towards the top surface of sinter layer, can consistently protect Hold the total amount of exhaust gas.Therefore, even if the firing region for working as Pu 4- sintering increases and air blower is added to exhaust-gas treatment and fills When setting, existing structure relevant to the exhaust gas cleaning in emission-control equipment also can be used when not modified.

(relevant technical literature)

(patent document)

(patent document 1) KR10-2002-0014877A

(patent document 2) KR10-2016-0079240A

(non-patent literature)

The F.W.Kinsey of (non-patent literature 1) Dravo company, the " design parameter (Design cooling for machine Parameters for strand cooling) ", AIME, volume 34, ironmaking processes (Ironmaking proceeding), Page 85, (1975)

(non-patent literature 2) D.Schlebusch, F.Cappel, the " optimization (Optimization of sintering plant contamination control Of pollution control in sinter plant) ", the 6th sintering international symposium, page 403 to 408, Japan Nagoya, (1993)

Summary of the invention

Technical purpose

Present disclose provides a kind of emission-control equipment and method, it can inhibit or prevent the multiple regions due to equipment In negative pressure between difference caused by interference between waste gas stream.

Present disclose provides a kind of emission-control equipment and method, it can inhibit or prevent between the waste gas stream of equipment Interference, to improve the treatment effeciency of equipment.

Technical solution

According to exemplary implementation scheme, emission-control equipment includes: gas pumping array, and gas pumping array is in trolley Extending and be arranged in the lower section of trolley on direction of travel, trolley is arranged to move while handling raw material along multiple regions, In, gas pumping array has waste gas circulation region separated from each other and exhaust gas discharge areas；And gas barrier structure, gas The boundary between waste gas circulation region and exhaust gas discharge areas is arranged in barrier structure, with sealing gas pumping array and trolley Between the interval in boundary.

Gas pumping array may include the multiple bellows arranged along the direction of travel of trolley, wherein bellows are respectively provided with Along the upper end that the extension of gas pumping array is arranged side by side, wherein the upper end is coupled to each other, wherein in adjacent bellows Between define boundary between waste gas circulation region and exhaust gas discharge areas therebetween in the case where, gas barrier structure setting On the adjacent upper end of some bellows adjacent with boundary in the multiple bellows.

The gap in boundary between the top surface of gas barrier structure and the bottom surface of trolley be greater than in the margin of tolerance 0 and Less than or equal to 100mm.

According to exemplary implementation scheme, emission-control equipment includes: multiple bellows, traveling of the multiple bellows along trolley Direction is arranged and the lower section of trolley is arranged in, wherein trolley is arranged to move while handling raw material along multiple regions, In, the multiple bellows have waste gas circulation region separated from each other and exhaust gas discharge areas, wherein in the multiple bellows The upper end of some bellows projects upwards more than the upper end of remaining bellows of the multiple bellows, wherein the multiple bellows In some bellows be adjacent with the boundary between the waste gas circulation region and the exhaust gas discharge areas.

Some bellows in the multiple bellows include the first bellows and the second bellows, and the first bellows and the second bellows Defining boundary therebetween, the first bellows and the second bellows are separately positioned in waste gas circulation region and exhaust gas discharge areas, In, the gap between the bottom surface of the upper end relative trolley of the upper end of the first bellows and the second bellows can be greater than in the margin of tolerance 0 and be less than or equal to 100mm.

Emission-control equipment further includes gas barrier structure, and the upper end and second of the first bellows is arranged in gas barrier structure At the upper end of bellows, to seal the gap in boundary between some bellows in trolley and bellows.

Gas barrier structure may include the gas barrier body upwardly extended in the side that the direction of travel with trolley intersects and From gas barrier body baffle outstanding (flap) on the direction of travel of trolley.

Baffle can extend or from the upper of gas barrier body from least one of the upper end of gas barrier body and lower part Part between end and lower part extends.Baffle can be set at least one of waste gas circulation region and exhaust gas discharge areas In.Baffle can be set in the lower negative pressure region in waste gas circulation region and exhaust gas discharge areas.When bellows are towards gear When the sectional area of the upper end of plate is set as 1, the development length of baffle can be greater than 0 and be less than or equal to 2/3.

Gas barrier structure can also include at least one rib (rib) for being formed as projecting upwards from the top surface of baffle.Rib It can extend on the direction of travel of trolley；Or rib can be upwardly extended in the side that the direction of travel with trolley intersects.Gas Barrier structure may include multiple ribs, wherein and some ribs in the multiple rib can extend on the direction of travel of trolley, and Remaining rib in the multiple rib can be upwardly extended in the side that the direction of travel with trolley intersects.

Gas barrier structure can also include taper, direction of the taper in the end of the body from gas barrier structure to baffle On be downwardly projected in an inclined manner from the distal end of baffle.When the sectional area of the upper end towards baffle of bellows is set as 1, gear The summation of the development length on the direction of travel of trolley of plate and taper can be greater than 0 and be less than or equal to 2/3.

According to exemplary implementation scheme, waste gas processing method includes: that raw material is loaded into trolley and keeps trolley edge more A region is heat-treated the raw material in trolley while mobile；Using gas pumping array aspirates downwards the inside of trolley, Wherein, gas pumping array extends on the direction of travel of trolley and the lower section of trolley is arranged in, wherein gas pumping array tool There are waste gas circulation region separated from each other and exhaust gas discharge areas；And inhibit exhaust gas from waste gas circulation region and exhaust gas discharge region Lower negative pressure region in domain is flowed into the space between gas pumping array and trolley.

Inhibiting exhaust gas to be flowed into space from lower negative pressure region may include: to use setting in waste gas circulation region and give up The gas barrier structure of boundary between gas discharge areas.

Advantageous effects

According to the exemplary implementation scheme of the disclosure, can inhibit or prevent negative pressure in the multiple regions due to equipment it Between difference caused by interference between waste gas stream, to improve the treatment effeciency of equipment.

For example, defining exhaust gas in adjacent bellows when the embodiment of the disclosure is applied to sinter production process In the case where boundary between race way and exhaust gas discharge areas, the traveling side for being arranged in trolley is arranged in gas barrier structure On the adjacent upper end of the bellows adjacent with the boundary in upward multiple bellows.When raw material is loaded on trolley, trolley When gas while raw material is heat-treated in the traveling of the multiple region and trolley is aspirated downwards again, gas resistance Keep off structure inhibit gas from the lower negative pressure region in waste gas circulation region and exhaust gas discharge areas pass through gas pumping array with Interval between trolley flows to the high negative region in waste gas circulation region and exhaust gas discharge areas.

Alternatively, the upper end for some bellows being arranged in the multiple bellows on the direction of travel of trolley is than the multiple The upper end of remaining bellows in bellows projects upwards more, wherein some bellows in the multiple bellows are followed with exhaust gas Boundary between ring region and exhaust gas discharge areas is adjacent.In addition, gas barrier structure can be set in adjacent bellows On adjacent upper end.When raw material is loaded on trolley, trolley again while raw material is heat-treated along the multiple region advance, And when the gas in trolley is aspirated downwards, narrow gap or gas barrier structure can inhibit gas from waste gas circulation region And interval of the lower negative pressure region across gas pumping array and trolley in exhaust gas discharge areas flows to waste gas circulation High negative region in region and exhaust gas discharge areas.

Therefore, adjacent bellows are located at --- adjacent bellows are located at waste gas circulation region and exhaust gas discharge region In domain --- in boundary of the exhaust gas between waste gas circulation region and exhaust gas discharge areas will not be interfering with each other.Therefore, may be used To prevent exhaust gas to be back to waste gas circulation region from the lower negative pressure region in waste gas circulation region and exhaust gas discharge areas and give up High negative region in gas discharge areas.Therefore, waste gas stream both can be improved circulates efficiency and discharge flow efficiency, Total exhaust gas flow can be improved again.As a result, it is possible to increase the efficiency of sinter production process, and the burning of high quality can be produced Tie mine.

Detailed description of the invention

Fig. 1 is the schematic diagram according to the raw material processing device of the embodiment of the disclosure.

Fig. 2 is to show the schematic diagram of the emission-control equipment of the embodiment according to the disclosure.

Fig. 3 is the schematic diagram according to the gas barrier structure of the first remodeling embodiment of the disclosure.

Fig. 4 is the schematic diagram according to the gas barrier structure of the second remodeling embodiment of the disclosure.

Fig. 5 is the schematic diagram according to the gas barrier structure of the third of disclosure remodeling embodiment.

Fig. 6 is the schematic diagram according to the gas barrier structure of the 4th of the disclosure the remodeling embodiment.

Fig. 7 is the schematic diagram according to the gas barrier structure of the 5th of the disclosure the remodeling embodiment.

Fig. 8 is the schematic diagram according to the waste gas stream for gas pumping array of comparing embodiment.

Fig. 9 is the waste gas stream illustrated according in the embodiment of the disclosure and the gas pumping array of comparing embodiment The curve graph of numerical analysis.

Figure 10 is shown according to the embodiment of comparing embodiment and the disclosure to the waste gas stream in gas pumping array The photo of the result of the simplification simulated experiment of progress.

Figure 11, which is shown, to be indicated according to the embodiment of comparing embodiment and the disclosure to useless in gas pumping array The table of the result for the simplification simulated experiment that air-flow carries out.

Specific embodiment

Hereinafter, it will be described in detail with reference to the accompanying drawings the embodiment of the disclosure.However, the present disclosure is not limited to be described below Embodiment, but can implement in a variety of manners.The embodiment of the disclosure can be illustrated to allow to complete the disclosure It describes and conveys the scope of the present disclosure to those skilled in the art.Attached drawing can be amplified the embodiment to illustrate the disclosure. Throughout the drawings, identical appended drawing reference indicates identical element.

In the term for describing implementation of the disclosure scheme, " top " or " lower part " be finger top or under Portion.In addition, " top " or " lower section " is used for the space for indicating directly or indirectly to contact with the top of component or lower part.

Present disclose provides the flowing gas and the discharges that make circulation during the exhaust gas being configured to allow in sintering machine flowing Flowing gas between drain off and disturb repressed emission-control equipment and method in sintering machine, wherein the flowing gas of circulation Draining off between body and the flowing gas of discharge is disturbed originally can be due to the difference, such as between the negative pressure in the multiple regions of equipment The difference between negative pressure in bellows and occur.Hereinafter, it will be described in detail referring to the sinter production process at steel mill Embodiment.Obviously, the disclosure can be equally applicable to the exhaust gas flow control of various processing equipments.

When illustrating the embodiment of the disclosure, the raw material processing device of the embodiment according to the disclosure is described first, So that the disclosure is expressly understood.Referring to raw material processing device, will be described at the exhaust gas according to the embodiment of the disclosure Manage device and method.

Fig. 1 is the schematic diagram for applying the raw material processing device of emission-control equipment of the embodiment according to the disclosure. Fig. 2 is to illustrate the gas pumping array of the emission-control equipment of the embodiment according to the disclosure and showing for gas barrier structure It is intended to.

In addition, Fig. 3 to Fig. 7 is the schematic diagram according to the remodeling of the gas barrier structure of the embodiment of the disclosure.With regard to this For, Fig. 3 is the schematic diagram according to the gas barrier structure of the first remodeling embodiment of the disclosure.Fig. 4 is according to the disclosure Second remodeling embodiment gas barrier structure schematic diagram.Fig. 5 is embodiment of being retrofited according to the third of the disclosure The schematic diagram of gas barrier structure.Fig. 6 is the schematic diagram according to the gas barrier structure of the 4th of the disclosure the remodeling embodiment. Fig. 7 is the schematic diagram according to the gas barrier structure of the 5th of the disclosure the remodeling embodiment.

It referring to Fig.1, include trolley 10, raw material hopper 21, top according to the raw material processing device of the embodiment of the disclosure Sinter hopper 22, ignition furnace 30 and emission-control equipment 400.

The available raw material of raw material processing device and while moving raw material sequentially along multiple regions to raw material It is heat-treated.At least part of the exhaust gas generated from the multiple region can be in at least part in the multiple region Middle circulation.In the context of the present specification, raw material processing device can be sintering machine.It gives up for example, sintering machine can be to have The downward drawing-in type sintering machine of gas recycling configuration.

Trolley 10 can be configured to allow to be heat-treated the raw material in trolley 10 in the multiple region.At raw material Managing equipment includes multiple trolleies, and the multiple trolley continuously can be arranged and be coupled on the extending direction of raw material processing device Together.Trolley 10 can be configured to travel in the arranged direction in the multiple region.Trolley 10 is at the top of trolley It is open and be therefore mounted with raw material in the inner space in each trolley.The inner space of each trolley in these trolleies Corresponding to heat treatment space.Raw material can be loaded in inside trolley 10.

The bottom part 11 of trolley 10 can have the configuration that elongate strip (fire bars) is arranged with network.Pass through this structure Type, the inner space of trolley 10 can be with corresponding bellows gas connection as described later, the as a result, exhaust gas in inner space It can be aspirated downwards via bellows.

The upper end of raw material processing device can limit the transport path of trolley 10, and the lower part of raw material processing device can limit Determine the return path of trolley 10.Trolley 10 is advanced in a first direction along transport path, and therefore, is loaded in trolley 10 Raw material moves in a first direction while being heat-treated.When trolley enters return path, thermally treated sintering Mine is discharged into fragmentation cell (not shown), and then, and trolley is along return path in the second party opposite with first direction It travels upwardly and can then be back to transport path.

Transport path may include multiple regions.The multiple region includes: loading area, and raw material hopper 21 and top are burnt Knot mineral aggregate bucket 22 is located in the loading area；Ignition zone positioned at loading area downstream, ignition furnace 30 are located in the igniting In region；And the sintering region positioned at ignition zone downstream.Loading area, ignition zone and sintering region can be along raw materials Moving direction is sequentially arranged.

Loading area can be located at the upstream of transport path, and at loading area, raw material starts to move in transport path. In loading area, raw material is loaded in the inner space of trolley 10, to form raw material in the inner space of trolley 10 Layer.Ignition zone is located at the downstream of loading area in the direction of motion of raw material, and ignition zone can be in the movement of raw material Side upwardly extends.In ignition zone, it is loaded in upper end (hereinafter, referred to upper material layer) quilt of the raw material layer in trolley 10 It lights.

In sintering region, raceway zone is moved to raw material layer from the upper material layer for the raw material layer being loaded on trolley 10 Lower part (hereinafter, referred to " lower material layer ").The sintering region be the region for being sintered and cooling down to raw material layer and It is located at the downstream of ignition zone in the direction of motion of raw material.Raw material in each trolley 10 makes raw material along loading in each trolley Through heat-treated while region, ignition zone and mobile sintering zone sequence, to generate sinter.

Raw material is received in raw material hopper 21 and is located above trolley 10 in loading area by raw material hopper 21.Raw material Hopper 21 can be disposed with loading chute and drum feeder at the bottom opening of raw material hopper 21 and therefore can fill raw material It is loaded in trolley 10.In this regard, before loading, raw material can be subjected to vertically separating by hopper 21.

Raw material may include the raw material for sinter production.For example, by the way that source of iron, additive and solid fuel are carried out It mixes, humidify and granulate, raw material can have the particle size of several millimeters of magnitudes.In this regard, source of iron is with ferrous components Source, and source of iron may include iron ore and fine iron ore.Additive may include the lime as material calciferous Stone.Solid fuel may include the solid fuel based on coal, and the solid fuel based on coal includes coke blacking and anthracite.

Top sinter hopper 22 is located in loading area and in the direction of motion of raw material positioned at raw material hopper 21 Upstream.It can be by selecting particle size to provide top sinter for the sinter of such as 8mm to 15mm from sinter.Top Sinter can be loaded onto the inner space of trolley 10 before loading raw material to the inner space of trolley 10, so that former Material is prevented from being attached to the bottom of trolley 10 or is prevented from being passed down through the gap limited in the bottom of trolley 10.

Ignition furnace 30 is spaced apart on the direction of travel of trolley 10 with raw material hopper 21.Ignition furnace 30 can be located at trolley 10 Top.That is, ignition furnace 30 can be located on the direction that trolley 10 is advanced in the ignition zone of transport path The downstream of raw material hopper 21.Ignition furnace 30 is configured to downward jet flames and for by the way that flame is ejected into upper material layer On upper material layer heated.In this regard, flame can be lighted including the solid fuel in upper material layer.

It can be configured to according to the emission-control equipment 400 of the embodiment of the disclosure downward from the inner space of trolley 10 Intake-gas and raw material when each trolley is moved along the multiple region in the inner space of trolley 10 by carry out heat Recycle at least part of intake-gas between the multiple region.

It referring to Figures 1 and 2, may include gas barrier knot according to the emission-control equipment 400 of the embodiment of the disclosure Structure 413, gas pumping array, ventilation of gases pipe 420, waste gas circulation mechanism and waste gas emission machine structure.

The extension of the trolley direction of travel on the bottom of trolley 10 and along trolley 10 can be set in gas pumping array.Example Such as, gas pumping array can be in the case where the top end of gas pumping array wraps up the bottom of trolley 10 in the row of trolley 10 It is upwardly extended into side.More specifically, gas pumping array may include the multiple wind arranged along the trolley direction of travel of trolley 10 Case 410.Adjacent bellows in the multiple bellows 410 can have on the extending direction of gas pumping array each other side by side The adjacent upper end of arrangement.Each bellows in the multiple bellows 410 are via the bottom 11 for being limited to corresponding trolley 10 In gap and with the inner space gas connection of corresponding trolley 10.Each bellows in the multiple bellows 410 are right Negative pressure is generated in the inner space for the trolley answered, the gas in the inner space of corresponding trolley 10 is aspirated downwards, thus The raceway zone in raw material layer is allowed to be transferred to the lower material layer of raw material from the upper material layer of raw material.In this process, exhaust gas It is collected into the multiple bellows 410.

After trolley 10 is subjected to igniting from ignition furnace 30, each trolley is advanced in a first direction and is aspirated along gas Array is advanced.In this regard, gas pumping array generates the suction in downward direction in the inner space of corresponding trolley 10 Power.The suction force enables the air outside trolley 10 to flow into the inner space of corresponding trolley 10, and then makes interior Gas in portion space is guided downward, so that raceway zone be made to move down.When corresponding trolley 10 is by sintering region, return The bottom 11 that area reaches trolley 10 is revolved, to complete the sintering to raw material layer.As corresponding trolley 10 is towards transport path Terminal is mobile, and sinter has been cooled by.Cooling sinter can be discharged via sinter in the terminal point of transport path and be filled It sets and is discharged.

The bottom 11 of the multiple bellows 410 and trolley 10 separates scheduled gap.This is the trolley moved in order to prevent 10 gas in inner space of the multiple bellows 410 by trolley collides when aspirating downwards with bellows 410.In addition, when pair When the trolley answered passes through each region, the ventilation resistance in the inner space of trolley is based on raw material at each point in each region Sintering state variation.For this purpose, the bottom 11 of the multiple bellows 410 and trolley 10 separates scheduled gap, so as to effectively From the inner space intake-gas of trolley 10.That is, adjacent and contact the upper end of the multiple bellows 410 and trolley 10 Bottom 11 separate scheduled distance.

On the other hand, gas circulation area and gas discharge region separated from each other be can have in gas pumping array. Therefore, the multiple bellows 410 can be divided into the bellows 411 being arranged in gas circulation area and be arranged in gas discharge region Bellows 412 in domain.

The gas circulation area of gas pumping array can correspond to gas pumping array from sintering region in first Point extends to the part of the second point in sintering region.In this regard, first point be sintered in region can correspond to raw material layer In raceway zone reach the bottom 11 of trolley 10 to complete the point to the sintering of raw material layer.The second point being sintered in region can be with Ventilation resistance value corresponding to the raw material layer through being sintered begins to fall below the point of predetermined value.

Therefore, the starting point that the gas discharge region of gas pumping array corresponds to the slave transport path of gas pumping array is prolonged Extend to prolonging from the second point in sintering region for first point of part in sintering region as described above and gas pumping array Extend to the combination of the part of the terminal of transport path.It is followed that is, discharge areas can correspond to removing for gas pumping array Rest part except ring region.

First point be sintered in region and second point as described above are only used for illustrating embodiment of the disclosure.This public affairs It opens without being limited thereto.Sintering region can configure in various ways according to processing requirement.In addition, gas circulation area and gas discharge Above-mentioned division between region is only used for making the illustrative configuration in the various configurations of waste gas circulation.Gas circulation area and Gas discharging area can configure in various ways, so that exhaust gas be made to be discharged and recycle in various ways.

Before describing gas barrier structure 413, it will illustrate to be filled according to the exhaust-gas treatment of the embodiment of the disclosure first Set 400 ventilation of gases pipe 420, waste gas circulation mechanism and waste gas emission machine structure.

Processing unit includes multiple ventilation of gases pipes, and the multiple ventilation of gases pipe is arranged to along gas pumping array Extending direction be separated from each other.The multiple ventilation of gases pipe can correspondingly with the bottom of gas pumping array, i.e. described The bottom of multiple bellows 410 is connected to.Ventilation of gases pipe 420 can be divided into and be arranged in the bellows 411 in gas circulation area The ventilation of gases pipe 421 of connection and the ventilation of gases pipe 422 being connected to the bellows 412 being arranged in gas discharge region.

Waste gas circulation mechanism has and some ventilation of gases pipes in ventilation of gases pipe 420 --- for example, with being arranged in gas The ventilation of gases pipe 421 that bellows 411 in body circulation region are connected to --- the first end of connection and towards the multiple region The second end in interior predetermined position.Therefore, waste gas circulation mechanism can make the ventilation resistance from the raw material layer through being sintered maximum Point suction exhaust gas towards the predetermined dot cycle on the multiple region.

In this regard, the second end of waste gas circulation mechanism can be sintered and the terminal of transport path at first point of region Between open wide.In one embodiment, the second end of waste gas circulation mechanism can be towards being located at above-mentioned the of sintering region The point in some downstreams opens wide.This means that: the point downstream in the second end of waste gas circulation mechanism towards sintering region is opened wide, and is being burnt At the point downstream of tie region, relatively small number of oxygen is consumed.Obviously, the second end of waste gas circulation mechanism can be towards described more Each point in addition to above-mentioned point on a region opens wide.Hereinafter, reference will be carried out to the configuration of waste gas circulation mechanism, it should Waste gas circulation mechanism is configured to make from the exhaust gas direction sintering region of the maximum point suction of the ventilation resistance of the raw material layer through being sintered Downstream dot cycle.

Waste gas circulation mechanism may include circulation pipe 430, recycle gas blower 451 and gas discharge closure 460.Circulation pipe 430 An end with and the ventilation of gases pipe 421 that is connected to of the bellows 411 that are arranged in gas circulation area be connected to.Circulation pipe 430 The other end can be connected to gas discharge closure 460.Recycle gas blower 451 is, for example, the air blower for waste gas circulation.It follows Ring air blower 451 is mounted at a point of circulation pipe 430, to allow exhaust gas from an endwall flow of circulation pipe 430 to another One end.Due to the flowing, waste gas circulation stream can be generated in the bellows 411 being set in gas circulation area.

Gas discharge closure 460 can extend and be located above trolley 10 on the direction of travel of trolley 10.Gas discharge Cover 460 can extend between some point in the terminal and sintering region of transport path.The lower end of gas discharge closure 460 is spacious It opens, and the lower end of gas discharge closure 460 is towards trolley 10.It the upper end of gas discharge closure 460 can be with the institute of circulation pipe 430 State the other end connection.Gas discharge closure 460 receives the exhaust gas from circulation pipe 430 and supplies gas to trolley 10.As a result, Exhaust gas can be made to be recycled.

In ventilation of gases pipe 420, the ventilation of gases pipe 422 for being not connected to waste gas circulation mechanism can be with waste gas emission machine Structure connection.The exhaust gas being collected into the bellows 412 being set in gas discharge region can be discharged by waste gas emission machine structure To atmosphere.

Waste gas emission machine structure has first end and the second end.The first end of ventilation of gases pipe 420 and and bellows 412 The second gas ventilation duct group 422 of connection is connected to.The second end can be connected to airspace.Waste gas emission machine structure can will be received The exhaust gas collected in the bellows 412 being set in gas discharge region is discharged towards airspace.Waste gas emission machine structure can wrap Include elongate discharge room 440, contaminant collector 470, main blower 452 and gas discharge module 480.

Elongate discharge room 440 can be hollow.One end of elongate discharge room 440 can connect to be arranged in gas The ventilation of gases pipe 422 that bellows 412 in body discharge areas are connected to.The other end of elongate discharge room 440 can connect to gas Body discharges module 480.Main blower 452 is, for example, for discharging the air blower of exhaust gas and being mounted on the predetermined of drain chamber 440 At position.Main blower 452 can produce stream of the exhaust gas from an end of drain chamber 440 to the other end of drain chamber 440 It is dynamic.Via the flowing, waste gas stream can be generated in the bellows 412 being set in gas discharge region.Exhaust gas may contain dirt Contaminate object, such as dust, nitrogen oxides and oxysulfide.In order to filter these pollutants, in being flowed in exhaust gas for main blower 452 Upstream arrangement on direction has contaminant collector 470.Contaminant collector 470 may be mounted at the pre-determined bit of drain chamber 440 Set place.

Fragmentation cell (not shown) can be disposed in the downstream in sintering region.The sinter discharged from trolley 10 passes through broken Broken unit is fractured into scheduled size, and then, is sized at sieve (not shown) through broken ore.Screened Sinter can be supplied to other processing, such as blast furnace is handled, of the screened sinter based on screened sinter Particle size may be used as top sinter or can be re-used as raw material.

Meanwhile main blower 452 and recycle gas blower 451 have different suction position and suction areas.That is, Main blower 452 and recycle gas blower 451 are different for the position for the bellows that they must be acted on and number.Separately Outside, the ventilation level of the raw material layer on the bellows 412 for be connected to main blower 452 and in the trolley 10 that bellows 412 move, With leading to for the raw material layer on the bellows 411 for be connected to recycle gas blower 451 and in the trolley for the array that bellows 411 move 10 Wind levels are also different.Due to these differences, main blower 452 and recycle gas blower 451 have different operating pressures.

Therefore, it is applied to the negative pressure for the bellows 412 being set in gas discharge region by main blower 452 and is roused by circulation The negative pressure that blower 451 is applied to the bellows 411 being set in gas circulation area is different from each other.It is taken out by main blower 452 The amount of the exhaust gas of suction and the amount of the exhaust gas aspirated by recycle gas blower 451 are also different.For example, being applied by recycle gas blower 451 The size for adding to the negative pressure for the bellows 411 being set in gas circulation area can be set to than being applied to by main blower 452 The size of the negative pressure of bellows 412 in gas discharge region is big.Certainly, it is applied to by main blower 452 and is set to gas discharge The size of the negative pressure of bellows 412 in region can be set in gas circulation area than being applied to by recycle gas blower 451 The size of the negative pressure of bellows 411 is big.That is, the size of the negative pressure in gas discharge region may be bigger.

In this case, the exhaust gas in lower negative pressure region can flow back towards high negative pressure region.That is, having Boundary between the gas circulation area and gas discharge region of different negative pressure, it may occur however that the interference between waste gas stream, from And cause exhaust gas recirculation to the region with high negative pressure.The exhaust gas of reflux can aspirate battle array by the bottom 11 of trolley 10 and gas Gap between column flows into high negative pressure region.

By this method, due between main blower 452 and recycle gas blower 451 in operating pressure and suction force extremely Lack the difference in terms of one, the portion that must be disposed to gas discharge region in exhaust gas can be in gas pumping array Boundary between gas discharge region and gas circulation area flows back into the gas circulation area with high negative pressure.As a result, It is reduced by the Abgasabsaugung amount that main blower 452 carries out.This phenomenon be referred to as main blower 452 and recycle gas blower 451 it Between drain off and disturb.

According to the embodiment of the disclosure, in order to inhibit taking out between main blower 452 and recycle gas blower 451 in gas The draining off for boundary inhaled between the gas discharge region and gas circulation area of array is disturbed, and can be formed with gas in the boundary Body barrier structure 413, to be sealed to the gap between trolley 10 and gas pumping array.

Referring to Fig. 2, gas barrier structure 413 is upwardly extended in the side intersected with the direction of travel of trolley 10.Gas barrier Structure 413 can be formed as being in for example block-shaped.It is limited between waste gas circulation region and exhaust gas discharge areas in adjacent bellows Boundary in the case where, some wind adjacent with the boundary in the multiple bellows can be set in gas barrier structure 413 On the adjacent upper end of case.

In this regard, the gap between the top of gas barrier structure 413 and the bottom of trolley 10 can be in the margin of tolerance Inside it is greater than 0 but is less than or equal to 100mm.Herein, the margin of tolerance can refer to due to caused by the mechanically or electrically error of measuring device Tolerance.Alternatively, the margin of tolerance, which can refer to, can prevent between trolley 10 and gas barrier structure 413 due to the bottom of trolley 10 The minimum clearance of the malformation of portion part 11 and gas barrier structure 413 and recurring structure collision.

Gas barrier structure 413 can make between the bottom 11 of trolley 10 and the upper end of bellows gas discharge region with The gap turn narrow of boundary between gas circulation area.That is, gas barrier structure 413 can be basic by the gap Upper realization gas barrier effect.Therefore, gas can be suppressed from lower negative pressure region to the reflux of high negative pressure region.In no gas At the other positions of body barrier structure 413, exhaust gas can flow freely through trolley 10 bottom 11 and bellows top it Between interval.Therefore, in each of gas discharge region and gas circulation area, the pumping of exhaust gas can be steadily realized It inhales.

Gas barrier structure 413 according to the embodiment of the disclosure may include various remodeling as described below.

Referring to Fig. 3, the gas barrier structure 413A according to the first remodeling embodiment of the disclosure may include with it is small The gas barrier body 413 ' that upwardly extends of side of the direction of travel intersection of vehicle 10 and from gas barrier body 413 ' in trolley 10 The baffle 414 in wings or plate form extended on direction of travel.In this regard, baffle 414 can be from gas barrier body 413 ' upper end horizontally extends.

Baffle 414 limits airflow-resistive face above the bellows that baffle 414 is located, allow to directly to prevent exhaust gas from Lower negative pressure region, such as gas discharge region are back to high negative pressure region, such as gas circulation area.That is, baffle 414 It is of great significance in terms of fluid dynamics.Below in conjunction with to according to the gas pumping array of the embodiment of the disclosure and This is described according to the numerical analysis that the waste gas stream in the gas pumping array of comparing embodiment carries out.

In addition, baffle 414 can be used for receiving and supporting and be fallen by the opening in the bottom 11 that is limited to trolley 10 Thus raw material is further narrow as the gap between trolley 10 and gas pumping array.In this way, it is possible in gas discharge region Boundary between domain and gas circulation area realizes more effective airflow-resistive.

Referring to Fig. 5, retrofited the gas barrier structure 413C and as described above the of embodiment according to the third of the disclosure The gas barrier structure 413A of one remodeling can be different in terms of the height of baffle 414.That is, according to the third of the disclosure The gas barrier structure 413C for embodiment of retrofiting may include upwardly extending in the side intersected with the direction of travel of trolley 10 Gas barrier body 413 ' and extend on the direction of travel of trolley 10 from the lower part of gas barrier body 413 ' in wings or The baffle 414 of plate form.

By this method, in the various remodeling of the disclosure, baffle 414 can from the top section of gas barrier body 413 ' or Bottom part extends, or can extend from the middle section between the top section and bottom part of gas barrier body 413 '. That is, baffle 414 can extend from the various height of gas barrier body 413 '.

Referring to Fig. 3 and Fig. 5, baffle 414 can be located at least one in gas circulation area and gas discharge region In bellows in person.In this regard, baffle can be located at the lower negative pressure region in gas circulation area and gas discharge region In bellows.In addition, retrofit in the gas barrier structure 413D and the as will be described later 5th of the 4th remodeling as will be described later In gas barrier structure 413E, baffle 414 can have lower negative pressure in gas circulation area and gas discharge region In the bellows in region.In this regard, the first remodeling of the disclosure, third remodeling, the 4th remodeling and the 5th remodeling show and are located at Baffle 414 in the bellows of gas discharge region as lower negative pressure region.

On the contrary, the gas barrier structure 413B according to the second remodeling embodiment of the disclosure may include point referring to Fig. 4 It Wei Yu not a pair of of baffle 414 in the bellows of gas circulation area and the bellows of gas discharge region.In other words, according to this public affairs The gas barrier structure 413B for the second remodeling embodiment opened may include in the direction intersected with the direction of travel of trolley 10 The gas barrier body 413 ' of upper extension, in wings or plate form and on the direction of travel of trolley 10 from gas barrier body 413 ' protrude and are arranged in a pair of of baffle 414 in gas circulation area and gas discharge region.

Obviously, other than retrofiting as described above, the embodiment of the disclosure can also include various remodeling, including only Baffle 414 in the bellows in the high negative pressure region in gas circulation area and gas discharge region.That is, according to this The baffle 414 of disclosed remodeling can be located in the bellows of at least one of gas circulation area and gas discharge region.

According to the remodeling of the disclosure, when the width at the top towards baffle 414 of bellows is set as 1, the extension of baffle Length can be greater than 0 and be less than or equal to 2/3.If top towards baffle 414 of the development length of baffle 414 relative to bellows Width 1 for more than 2/3, then prevent the effect of exhaust gas recirculation from becoming larger, but exhaust gas flow into the bellows towards baffle in can become Difference.For this purpose, the development length of baffle 414 is equal to or less than 2/ for the width 1 at the top towards baffle 414 of bellows 3。

Referring to Fig. 6, the gas barrier structure 413D according to the 4th of the disclosure the remodeling embodiment can also include from gear At least one rib 415 that the top surface of plate 414 projects upwards.That is, according to the gas of the 4th of the disclosure the remodeling embodiment Body barrier structure 413D may include the gas barrier body 413 ' upwardly extended in the side intersected with the direction of travel of trolley 10, It is projected upwards on the direction of travel of trolley 10 from the baffle 414 of the extension of gas barrier body 413 ' and from the top surface of baffle 414 At least one rib 415.

In this regard, in fig. 6 it is shown that baffle 414, baffle 414 are arranged only in the bellows of gas discharge region simultaneously And extend from the lower part of gas barrier body 413 '.The present disclosure is not limited thereto.It can be with according to the baffle 414 of the 4th of the disclosure the remodeling It is only located in the bellows of gas circulation area or can be located at the bellows of gas discharge region and the bellows of gas circulation area Each of in.In addition, baffle 414 as described above can be from the part with different height --- including gas barrier body 413 ' upper and lower part --- extend.

Rib 415 can be it is multiple and can extend on the direction of travel of trolley or with vertical direction and trolley The side of both direction of travel intersection upwardly extends.In this regard, some ribs in multiple ribs 415 prolong on the direction of travel of trolley It stretches, and remaining rib in multiple ribs 415 is upwardly extended in the side intersected with both direction of travel of vertical direction and trolley, thus Network may be implemented.By using the network, the raw material fallen on the top surface of baffle 414 can be accommodated in grid In structure, to inhibit or prevent the reflux of exhaust gas.

In addition, the exhaust gas that above-mentioned rib 415 is flowed on the top surface in baffle 414 applies flow resistance, and can press down Exhaust gas processed flows to high negative pressure region from lower negative pressure region.

Referring to Fig. 7, the gas barrier structure 414E according to the 5th of the disclosure the remodeling can also include from the remote of baffle 414 Hold downward projection of taper 416 in an inclined manner.That is, gas barrier structure 414E may include in the row with trolley 10 Gas barrier body 413 ' that the side intersected into direction upwardly extends prolongs on the direction of travel of trolley 10 from gas barrier body 413 ' The baffle 414 stretched and be formed as on the direction from body 413 ' to the end of baffle 414 from the distal end of baffle 414 with the side of inclination The downward projection of taper 416 of formula.

Due to taper 461, the larger airflow-resistive region in the bellows towards baffle 414 can reliably ensure, simultaneously It can prevent the collision between gas barrier structure and the bottom 11 of trolley.For example, when the upper end towards baffle 414 of bellows When sectional area is set as 1, the overall elongation length on the direction of travel of trolley of baffle 414 and taper 416 can be greater than 0 and small In or equal to 2/3.

According to the feature for the gas barrier structure retrofited above can it is substituted for one another or be combined with each other, to form gas barrier The various configurations of structure.

It is filled according to the exhaust-gas treatment for raw material processing device of the another embodiment (the second embodiment) of the disclosure Set to be changed as follows: emission-control equipment may include the direction of motion arrangement along trolley and be arranged in below trolley Multiple bellows, wherein trolley is arranged to move while raw material is received in trolley along multiple regions, wherein described more A bellows have the waste gas circulation region being separated from each other and exhaust gas discharge areas, wherein some wind in the multiple bellows The upper end of case projects upwards more than the upper end of remaining bellows of the multiple bellows, wherein one in the multiple bellows A little bellows are adjacent with the boundary between waste gas circulation region and exhaust gas discharge areas.

In one embodiment, some bellows in the multiple bellows include the first bellows and the second bellows, and First bellows and the second bellows limit the boundary between the first bellows and the second bellows, and the first bellows and the second bellows difference It is arranged in waste gas circulation region and exhaust gas discharge areas, wherein the upper end of the first bellows and the upper end of the second bellows are relatively small Interval between the bottom surface of vehicle can fall in error range in the range of 0mm to 100mm but not include 0mm.

In this case, the boundary between gas discharge region and gas circulation area, in the upper of the first bellows It is provided with gas barrier structure at end and the upper end of the second bellows and between the upper end of the first bellows and the upper end of the second bellows, To reduce the gap between the bottom of trolley and bellows, more specifically, reduce trolley bottom and the first bellows upper end and Gap between the upper end of second bellows.In this regard, the configuration of gas barrier structure can be with the above-mentioned reality according to the disclosure The configuration for applying the gas barrier structure of mode is same or similar.The remaining part of emission-control equipment in the present embodiment can be with It is similar or identical with those of the embodiment above of disclosure component.

Gas barrier structure according to the second embodiment of the disclosure may include various remodeling.In this regard, according to The configuration of the gas barrier structure of the remodeling of second embodiment of the disclosure and operation can be with the first realities according to the disclosure It applies the configuration of the gas barrier structure of the above-mentioned remodeling of scheme and operates same or similar.

Fig. 8 is to show the schematic diagram of the waste gas stream of the gas pumping array according to comparing embodiment.In this regard, according to The gas pumping array of comparing embodiment does not have gas barrier structure, and therefore, between gas pumping array and trolley Gap is greater than 100mm as in conventional method.

Referring to Fig. 8, in comparing embodiment, gas barrier structure is not present, is arranged so that exhaust gas can pass through gas Put the boundary reflux between region and gas circulation area.In addition, passing through the exhaust gas of raw material layer can concentrate on as high negative pressure The gas circulation area in region.Therefore, when occur it is this drain off disturb when, the exhaust gas for the main blower being connected to gas discharge region Aspiration is reduced, and therefore, treatment effeciency may reduce.

For example, there are enough gaps between bellows and trolley, for conventional sintering machine to allow exhaust gas such as It is shown in fig. 8 to flow through the gap like that.When sintered discharge gas round-robin method is applied to the sintering machine with this configuration simultaneously And when the firing region increase of sintering machine, exhaust gas control cannot be reliably achieved by single air blower, and therefore, it is necessary to pacify Fill other air blower.When the operating of multiple air blowers, exhaust gas can pass through above-mentioned gap and flow backward, and exhaust gas control effect Rate can reduce.In the sintering machine for operating multiple air blowers, there should not be exhaust gas between the bellows for being connected to different air blowers Transmitting, so that exhaust gas control is effectively performed.

It, can using the sintering machine of two or more air blowers in the remodeling of embodiment of the present disclosure and embodiment Exhaust gas is efficiently controlled to use gas barrier structure.In order to illustrate according to the gas barrier structure of the embodiment of the disclosure Effect, the waste gas stream of comparing embodiment and the gas pumping array of the embodiment of the disclosure will numerical analysis and explain State the result of numerical analysis.

Fig. 9 is the waste gas stream shown according in the embodiment of the disclosure and the gas pumping array of comparing embodiment The curve graph of numerical analysis.(a) of Fig. 9 show in the gas pumping array according to comparing embodiment in gas discharge region The Numerical results of the waste gas stream of boundary between gas circulation area.(b) of Fig. 9 shows one according to the disclosure The waste gas stream of the boundary between gas discharge region and gas circulation area in the gas pumping array of a embodiment Numerical results.(c) of Fig. 9, which is shown, to be used according to the working as first remodeling of the disclosure including gas barrier body and one The boundary between gas discharge region and gas circulation area when the gas barrier structure of baffle in gas pumping array Waste gas stream Numerical results.

That is, (a) to (c) of Fig. 9 is shown based on whether arranging gas barrier body and whether arranging baffle pair The result for the flow analysis that waste gas stream carries out.In this regard, the pressure differential resetting between main blower and recycle gas blower at 200mmAq, and recycle gas blower negative pressure with higher.Fig. 9 (a) compared between (b) in, for compare implement Example, can be confirmed that the exhaust gas from gas discharge region is forced to flow back into gas circulation area, and for the reality of the disclosure Apply scheme, it can be seen that the exhaust gas recirculation is reduced significantly.

In this regard, until the exhaust gas recirculation of gas circulation area is reduced significantly, but the exhaust gas on gas barrier structure A part is still biased towards gas circulation area.In this regard, waste gas stream biasing can be since car interior.This is because Raw material layer in trolley has gap, and by the gap, the exhaust gas in raw material layer can be easily inclined towards gas circulation area It sets.

Simultaneously as trolley keeps traveling, therefore gas barrier structure must be spaced apart with the bottom of trolley.From Inside raw material layer, the exhaust gas of biasing can be flowed into gas circulation area along the top surface of gas barrier structure.In the disclosure It in remodeling, is biased to prevent or prevent, gas barrier structure has baffle.Baffle extends on the direction of travel of trolley.Make With this baffle arrangement, along gas barrier structure and waste gas stream on gas barrier structure do not biased, but it is basic On be equably divided into gas discharge region and gas circulation area.

In compared between (b) and (c) of Fig. 9, it can be seen that the gas barrier structure with gas barrier body and baffle Exhaust gas recirculation is more effectively inhibited than the gas barrier structure only with gas barrier body.That is, according to the disclosure The gas barrier structure of remodeling can also include baffle, more effectively to inhibit the reflux of exhaust gas.In this way, inventor is true The embodiment and its remodeling of the disclosure of accepting restrained effectively the reflux of exhaust gas.On the other hand, in order to observe the disclosure Whether at least one of gas barrier body and the baffle of remodeling of the disclosure of the present embodiment prevent exhaust gas recirculation, to gas Body stops the variation of the exhausted air quantity at body and baffle to measure.

Figure 10 show embodiment according to comparing embodiment and the disclosure and its remodeling in gas pumping array The photo of the result for the simplification simulated experiment that the waste gas stream in portion carries out.(a) of Figure 10 shows the simplification according to comparing embodiment The photo of the result of simulated experiment.(b) of Figure 10 shows the result of the simplification simulated experiment according to the embodiment of the disclosure Photo.(c) of Figure 10 shows the gas for being used to have gas barrier body and single baffle of the first remodeling according to the disclosure The photo of the result of the simplification simulated experiment of body barrier structure.

In this experiment, when the sectional area of the upper end of bellows is set as 1, the development length of baffle is set as 2/3.For Simplified simulated experiment has prepared simulation and has corresponded to each of comparing embodiment, the embodiment of the disclosure and its remodeling The geometry of internal structure of each gas pumping array simplify model.Each experiment is the sintering condition needle using sintering machine Each simplified model is carried out.

The result for simplifying simulated experiment is shown in FIG. 11.Figure 11, which is shown, to be indicated according to comparing embodiment, the disclosure The table of the result of the simplification simulated experiment for the waste gas stream in gas pumping array of embodiment and its remodeling.With regard to this Speech, in Figure 11, comparing embodiment corresponds to according to the simplification simulated experiment of the comparing embodiment of the disclosure as a result, embodiment party Case 1 corresponds to according to the simplification simulated experiment of the embodiment of the disclosure as a result, and embodiment 2 corresponds to according to the disclosure First remodeling the simplification simulated experiment for the barrier structure including gas barrier body and single baffle result.

Referring to these results, it can be seen that for the embodiment 1 with gas barrier body, compared with comparing embodiment, Reliably maintain exhaust gas flow.As can be seen that arriving gas compared with comparing embodiment for the embodiment 2 for further including baffle The exhaust gas flow in body circulation region increases 12%, and total flow increases 11%.It in other words, only include gas barrier body Gas barrier structure can inhibit drain off disturb while keep exhaust gas flow.The gas barrier structure for further including baffle can To inhibit to drain off simultaneously to disturb and increase the flow of exhaust gas.

The arrangement of baffle allow total exhaust gas flow and exhaust gas flow to gas circulation area it is all increased the reason is as follows that.By In effectively inhibiting or prevent draining off between gas discharge region and gas circulation area to disturb by baffle, therefore can be from Raw material layer in gas circulation area with relatively high ventilation resistance fully aspirates exhaust gas.

Specifically, the negative pressure in gas circulation area is not by the interference of the negative pressure in gas discharge region.Therefore, gas follows Wholly or largely raw material layer of the suction function in the gas circulation area with higher ventilation resistance in ring region.This permits Perhaps the exhaust gas flow in gas circulation area increases, while exhaust gas being allowed smoothly to be aspirated in gas discharge region.This can To increase total exhaust gas flow.

In the following, it is described that using the method according to the emission-control equipment processing exhaust gas of the embodiment of the disclosure. Waste gas processing method may include: that raw material is loaded into trolley, and to small while moving trolley along multiple regions Raw material in vehicle is heat-treated；The inside of the downward suction and pumping trolley of using gas pumping array；And gas is inhibited to follow from exhaust gas Lower negative pressure region in ring region and exhaust gas discharge areas is flowed into the space between gas pumping array and trolley.

In this regard, inhibiting exhaust gas to be flowed into space from lower negative pressure region may include: using setting in waste gas circulation The gas barrier structure of boundary between region and exhaust gas discharge areas.

Firstly, by raw material supply to raw material hopper.In this regard, raw material is by by fine iron ore, lime stone, thin coke It is mixed and is humidified with anthracite and their particles are melted into several millimeters to prepare.Ready raw material is loaded into raw material In hopper.In this regard, select the sinter with scheduled particle size as top sinter, and will be selected on Portion's sinter is loaded in the sinter hopper of top.

Then, raw material is loaded on trolley.Heat is carried out to raw material while moving trolley along the multiple region Processing.

Specifically, which includes: to travel trolley in the orientation of multiple regions；Use raw material hopper Raw material is loaded into trolley；Raw material is lighted to form raceway zone in the raw material of car interior with ignition furnace, and is made back Raw materials for sintering while rotation area is moved to lower part from the upper end in the inner space of trolley.

More specifically, trolley is along transport path multiple when raw material and upper sinter are fed respectively to corresponding hopper It advances in the orientation in region.Then, in the loading area in the multiple region, upper sinter is placed on trolley On bottom, then raw material is placed on the top surface of upper sinter, to form raw material layer.

When raw material layer formation, raw material layer is sequentially moved along ignition zone and sintering region.In ignition zone, light Raw material layer in raw material layer to form raceway zone.Then, sintering region in, make raceway zone from the upper material layer in raw material layer While being moved to lower material layer, raw material layer is heat-treated at a high temperature of about 1300 DEG C to 1400 DEG C, to form burning Tie mine.

While carrying out above-mentioned heat treatment process, using gas pumping array aspirates the gas of car interior and makes to give up Some waste gas circulations in gas pass through trolley and remaining gas are discharged.The bottom part down of trolley is arranged in simultaneously in gas pumping array Extend along the direction of trolley.Gas pumping array is divided into gas circulation area and gas discharge region.Gas pumping array can be with It is the gas pumping array as described above in the emission-control equipment according to the embodiment of the disclosure.It is taken out via the gas It inhales, raceway zone can be moved to lower part from the upper end in raw material layer, so that raw material is fully sintered.

Reflux inhibits operation that can occur together with being aspirated to car interior.It may include inhibiting that reflux, which inhibits operation, Gas is from the lower negative pressure region in waste gas circulation region and exhaust gas discharge areas across gas pumping array and trolley Interval flows to the high negative region in waste gas circulation region and exhaust gas discharge areas.In this regard, inhibit gas from lower It may include using being arranged between waste gas circulation region and exhaust gas discharge areas that negative pressure region, which flows to high negative region, The gas barrier structure defined above of boundary.

As described above, can be used in the operation of reflux for inhibiting exhaust gas by using gas barrier structure from gas At least one rib that the baffle of body barrier structure projects upwards more effectively inhibits the stream of exhaust gas to flow on the upper surface of baffle It is dynamic.

On the other hand, above to using the gas barrier structure according to the embodiment and use according to the reality The baffle and rib for applying the remodeling of scheme inhibit or prevent the reflux of exhaust gas from having carried out multiple description.Therefore, in order to avoid repetition is retouched It states, descriptions thereof will be omitted.

The sinter of completion is discharged into fragmentation cell in the end of transport path.The sinter of discharge passes through broken single Member and be crushed to scheduled particle size.It is sieved through broken ore by sifter.According to particle size, screened ore The blast furnace processing of most subsequent processing can be fed, or alternatively, may be used as top sinter, or alternatively, The ore of return is considered to reuse as raw material.

According to the embodiment of the disclosure, the side being arranged between waste gas circulation region and exhaust gas discharge areas can be used Gas barrier structure at boundary reduces the interval in boundary between gas pumping array and trolley.Therefore, it is burnt in production Knot mine can inhibit with during making waste gas circulation or prevent from making gas exist due to Negative Pressure Difference between discharge areas and race way Boundary between discharge areas and race way flows backward.Therefore, it can steadily ensure the stream of exhaust gas during operation Amount.

According to the remodeling of the disclosure, gas barrier structure has the combination of baffle or baffle and rib, so that total stream of exhaust gas The flow of amount and the exhaust gas wait be recycled can increase, and so as to further increase operating efficiency, and can obtain height The sinter of quality.

The embodiment above of the disclosure is merely to illustrate the disclosure, rather than for limiting the disclosure.In the disclosure The feature presented in the embodiment above can be combined with each other or be replaced to form various remodeling.It should be noted that these are retrofited It can be considered to fall into the scope of the present disclosure.The disclosure will be in the range of claim and its equivalent program in a variety of manners Implement.It will be appreciated by those skilled in the art that various embodiments are all possible in the scope of the present disclosure or spirit.

Claims

1. a kind of emission-control equipment, comprising:

Gas pumping array, the gas pumping array extend on the direction of travel of trolley and are arranged under the trolley Side, the trolley are arranged to move while handling raw material along multiple regions, wherein the gas pumping array has each other Separated waste gas circulation region and exhaust gas discharge areas；And

Gas barrier structure, the gas barrier structure are arranged between the waste gas circulation region and the exhaust gas discharge areas Boundary, to seal the interval in the boundary between the gas pumping array and the trolley.

2. emission-control equipment according to claim 1, wherein the gas pumping array includes the institute along the trolley Multiple bellows of direction of travel arrangement are stated,

Wherein, the multiple bellows are respectively provided with along the upper end that the extending direction of the gas pumping array is arranged side by side, wherein The upper end is coupled to each other,

The boundary between the waste gas circulation region and the exhaust gas discharge areas therebetween is defined in adjacent bellows In the case where, the adjacent of some bellows adjacent with the boundary in the multiple bellows is arranged in the gas barrier structure Upper end on.

3. emission-control equipment according to claim 1, wherein the top surface of the gas barrier structure and the trolley It is greater than 0 and less than or equal to 100mm in being spaced in the margin of tolerance for the boundary between bottom surface.

4. a kind of emission-control equipment, comprising:

Multiple bellows, the multiple bellows are arranged along the direction of travel of trolley and the lower section of the trolley are arranged in, wherein described Trolley is arranged to move while handling raw material along multiple regions, wherein the multiple bellows have exhaust gas separated from each other Race way and exhaust gas discharge areas,

Wherein, the upper end of some bellows in the multiple bellows is projected upwards than the upper end of remaining bellows of the multiple bellows More, wherein some bellows in the multiple bellows be with the waste gas circulation region and the exhaust gas discharge areas it Between boundary it is adjacent.

5. emission-control equipment according to claim 4, wherein some bellows in the multiple bellows include the first wind Case and the second bellows, first bellows and second bellows define the boundary therebetween, first bellows and institute The second bellows are stated to be separately positioned in the waste gas circulation region and the exhaust gas discharge areas,

Wherein, the interval energy between the bottom surface of the relatively described trolley in the upper end of first bellows and the upper end of second bellows Enough it is greater than 0 and is less than or equal to 100mm.

6. emission-control equipment according to claim 5, wherein the emission-control equipment further includes gas barrier knot Structure, the gas barrier structure are arranged at the upper end of first bellows and the upper end of second bellows and described first Between the upper end of bellows and the upper end of second bellows, to be sealed between some bellows in the trolley and the bellows The gap in the boundary.

7. emission-control equipment described in one according to claim 1 to 3 and 6, wherein the gas barrier structure packet It includes: the gas barrier body extended along the direction intersected with the direction of travel of the trolley；And described in the trolley The baffle extended on direction of travel from the gas barrier body.

8. emission-control equipment according to claim 7, wherein the baffle is from the upper end of the gas barrier body under At least one of portion extends or extends from the part between the upper end and the lower part of the gas barrier body.

9. emission-control equipment according to claim 7, wherein the baffle plate setting is in the waste gas circulation region and institute It states at least one of exhaust gas discharge areas.

10. emission-control equipment according to claim 7, wherein the baffle plate setting in the waste gas circulation region and In lower negative pressure region in the exhaust gas discharge areas.

11. emission-control equipment according to claim 7, wherein when the section of the upper end towards the baffle of bellows When product is set as 1, the development length of the baffle is greater than 0 and is less than or equal to 2/3.

12. emission-control equipment according to claim 7, wherein the gas barrier structure further includes being formed as from institute State at least one rib that the top surface of baffle projects upwards.

13. emission-control equipment according to claim 12, wherein the rib is on the direction of travel of the trolley Extend；Or the rib can be upwardly extended in the side that the direction of travel with the trolley intersects.

14. emission-control equipment according to claim 13, wherein the gas barrier structure includes multiple ribs, wherein Some ribs in the multiple rib extend on the direction of travel of the trolley, and remaining rib in the multiple rib with The side of the direction of travel intersection of the trolley upwardly extends.

15. emission-control equipment according to claim 7, wherein the gas barrier structure further includes taper, the tip From the remote of the baffle on the direction of end of the portion in the gas barrier body from the gas barrier structure to the baffle End is downwardly projected in an inclined manner.

16. emission-control equipment according to claim 15, wherein when the section of the upper end towards the baffle of bellows When product is set as 1, the summation of the development length on the direction of travel of the trolley of the baffle and the taper is big In 0 and be less than or equal to 2/3.

17. a kind of waste gas processing method, comprising:

Raw material is loaded into trolley and while moving the trolley along multiple regions to the raw material in the trolley It is heat-treated；

Using gas pumping array aspirates downwards the inside of the trolley, wherein the gas pumping array is in the trolley Extend and be arranged in the lower section of the trolley on direction of travel, wherein the gas pumping array has exhaust gas separated from each other Race way and exhaust gas discharge areas；And

Exhaust gas is inhibited to be flowed into the gas from the lower negative pressure region in the waste gas circulation region and the exhaust gas discharge areas In space between body pumping array and the trolley.

18. according to the method for claim 17, wherein inhibit the exhaust gas to be flowed into from the lower negative pressure region described It include: the gas barrier using the boundary being arranged between the waste gas circulation region and the exhaust gas discharge areas in space Structure.