CN207025034U - Industrial kiln gas accumulation of heat denitrification apparatus - Google Patents

Industrial kiln gas accumulation of heat denitrification apparatus Download PDF

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Publication number
CN207025034U
CN207025034U CN201621442168.9U CN201621442168U CN207025034U CN 207025034 U CN207025034 U CN 207025034U CN 201621442168 U CN201621442168 U CN 201621442168U CN 207025034 U CN207025034 U CN 207025034U
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heat
denitration
heat storage
storage unit
denitrification
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钟贵全
杨玉地
郭科宏
石为华
宋敏洁
吴道洪
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Shenwu Technology Group Corp Co Ltd
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Shenwu Technology Group Corp Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The utility model discloses industrial kiln gas accumulation of heat denitrification apparatus, including:First heat storage unit, high-temperature thermal storage body is provided with first heat storage unit, and the top of first heat storage unit has the first opening;Second heat storage unit, Pen An areas and denitration heat-accumulating area are followed successively by from the bottom to top in second heat storage unit, reductant nozzle is provided with the Pen An areas, denitration heat storage is provided with the denitration heat-accumulating area, the top of second heat storage unit has the second opening, and the second heat storage unit bottom is connected with the bottom of first heat storage unit.Regenerative Combustion System and flue gas denitrification system are integrated in one by the industrial kiln gas accumulation of heat denitrification apparatus, and the denitration process to flue gas is thus realized while Mist heat recovering, and the industrial kiln gas accumulation of heat denitrification apparatus has accumulation of heat and denitration dual-use function.

Description

Industrial kiln gas accumulation of heat denitrification apparatus
Technical field
The utility model belongs to qi exhaustion nitre energy-conserving and environment-protective field, specifically, the utility model is related to industrial kiln gas and stores Thermal denitration device.
Background technology
With the rapid development of China's economy, the fossil fuel equal energy source such as natural gas, oil and coal obtains more extensive Using so that environmental problem is increasingly serious, therefore causes a series of environmental problems, such as acid rain, depletion of the ozone layer, greenhouse effects Deng so that our living environment is further severe.Energy resource structure of the China based on coal determine China nitrogen oxides and Sulfur oxide emission is constantly in high situation, the discharge of a large amount of pollution gas so that environmental problem is increasingly tight It is high, the production and living of our people are not only had a strong impact on, and be unfavorable for the sustainable development of China's economy.Therefore, environment is asked Topic has obtained national increasing concern.
The NO of mankind's activity dischargeXMore than 90% comes from fuel combustion process.It is various industrial furnaces, Civil energy-saving cooking stove, motor-driven During high temperature combustion of fuel in car and other internal combustion engines, the nitrogen substance oxidation generation NO in fuelX, participate in burning air in N2And O2Also NO can be generatedX.From the point of view of energy resource structure, in primary energy and the power generation energy resource composition in China, coal occupies definitely Leading position.And the coal in China more than 80% directly burns, particularly for power station, Industrial Boiler and civil boiler In.Therefore, in considerably long period, the NO in flue gasXDischarge is to cause China air NOXOne principal element of pollution, how Reduce the NO of fixed source emissionXIt is the important topic that atmospheric environment is administered.
Denitrating flue gas belongs to burning post-processing technology, and the smoke evacuation system of many developed countries all needs to install denitrating flue gas dress Put.Denitration method for flue gas is more, but the only selective catalytic reduction for obtaining a large amount of commercial Applications at present is urged with selectively non- Change reducing process, other method is in experimental study stage or pilot scale stage at present.
Utility model content
The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality It is to propose industrial kiln gas accumulation of heat denitrification apparatus with a new purpose, the industrial kiln gas accumulation of heat denitrification apparatus is by accumulation of heat Combustion system is integrated in one with flue gas denitrification system, is thus realized while Mist heat recovering at the denitration to flue gas Reason, the storage industry kiln gas accumulation of heat denitrification apparatus have accumulation of heat and denitration dual-use function.
According to one side of the present utility model, the utility model proposes industrial kiln gas accumulation of heat denitrification apparatus, including:
First heat storage unit, high-temperature thermal storage body is provided with first heat storage unit, the top of first heat storage unit has First opening;
Second heat storage unit, Pen An areas and denitration heat-accumulating area, the spray ammonia are followed successively by from the bottom to top in second heat storage unit Reductant nozzle is provided with area, denitration heat storage, the top tool of second heat storage unit are provided with the denitration heat-accumulating area There is the second opening, the second heat storage unit bottom is connected with the bottom of first heat storage unit.
By using the industrial kiln gas accumulation of heat denitrification apparatus of the utility model above-described embodiment, high-temperature flue gas is first by One opening enters in the first heat storage unit, enters after high-temperature thermal storage body carries out accumulation of heat in the second heat storage unit, flue gas stores second Successively by reductant nozzle, denitration heat storage in hot portion, the reducing agent sprayed into first with reductant nozzle is mixed, then is passed through Cross the accumulation of heat of denitration heat storage while denitration reaction occurs, finally discharged by the second opening.
The utility model industry kiln gas accumulation of heat denitrification apparatus is using collection accumulation of heat and the novel denitration of denitration function integration Heat storage, its surface is smooth, wear-resisting, denitration heat storage service life length, adapts to 600 DEG C or so flue gases of higher temperature and enters institute State denitration heat storage, flue gas can carry out denitration reaction without depth dedusting, and stability is good, and light-off temperature is low, have at 180 DEG C compared with Good denitration efficiency, denitration efficiency is high, reduces and denitration heat storage usage amount is commonly used in current industry field, and denitration cost is low. Secondly, high-temperature flue gas caused by burning enters accumulation of heat denitration region after high-temperature thermal storage body recovery is cooled to 300 DEG C~700 DEG C, Cancel low-temperature heat accumulating body, using denitration heat storage, the further accumulation of heat of flue gas completes denitration reaction while cooling, removes nitrogen oxidation Externally discharged after thing, energy-efficient, environmentally friendly, system compact.In addition, flue gas enters denitration heat storage, it is complete in denitration heat storage Into further cooling and being sufficiently mixed, until denitration catalyst reaction is completed, ammonia-spraying grid need to be set by eliminating conventional denitrating system Etc device.
In addition, can also be had according to the industrial kiln gas accumulation of heat denitrification apparatus of the utility model above-described embodiment following attached The technical characteristic added:
In the utility model, multiple denitration heat storages, the out of stock heat-accumulating area bag are provided with the denitration heat-accumulating area Center and external zones are included, the denitration that the denitration accumulation of heat volume density arranged in the center is more than arrangement in the external zones stores Hot volume density.
In the utility model, the denitration heat storage of the center is into multiple rows of more column distributions.
In the utility model, the center is rectangular area, and the external zones is rectangular box-like, and the external zones encloses Set around the center.
In the utility model, the denitration heat storage of the external zones is divided into multi-turn, and denitration heat storage described in multi-turn from It is nested successively from inside to outside to set.
In the utility model, multiple denitration heat storages of each circle are circumferentially spaced arrangement.
In the utility model, the denitration heat storage of any one circle encloses denitration heat storage in the circumferential direction with adjacent one Interlaced arrangement.
In the utility model, reducing agent spray includes multiple, and the reductant nozzle is atomizer.
In the utility model, the atomizer is ammonia atomization nozzle or urea atomizer.
Brief description of the drawings
Fig. 1 is the structural representation according to the industrial kiln gas accumulation of heat denitrification apparatus of the utility model one embodiment.
Fig. 2 is the structural representation according to the industrial kiln gas accumulation of heat denitrification apparatus of the utility model one embodiment.
Fig. 3 is the knot of denitration heat-accumulating area in the industrial kiln gas accumulation of heat denitrification apparatus according to the utility model one embodiment Structure schematic diagram.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.
According to one side of the present utility model, the utility model proposes industrial kiln gas accumulation of heat denitrification apparatus, such as Fig. 1 Shown, the industrial kiln gas accumulation of heat denitrification apparatus of the utility model embodiment includes:First heat storage unit 10 and the second heat storage unit 20, Wherein, high-temperature thermal storage body 11 is provided with the first heat storage unit 10, the top of first heat storage unit 20 has the first opening 12;The Pen An areas and denitration heat-accumulating area are followed successively by two heat storage units 20 from the bottom to top, reductant nozzle 21 is provided with the Pen An areas, Denitration heat storage 22 is provided with the denitration heat-accumulating area, the top of second heat storage unit 20 has the second opening 23, described The bottom of second heat storage unit 20 is connected with the bottom of first heat storage unit 10.
By using the industrial kiln gas accumulation of heat denitrification apparatus of the utility model above-described embodiment, high-temperature flue gas is first by One opening 12 enters in the first heat storage unit 10, enters after high-temperature thermal storage body 11 carries out accumulation of heat in the second heat storage unit 20, flue gas Successively by reductant nozzle 21, denitration heat storage 22 in the second heat storage unit 20, what is sprayed into first with reductant nozzle 21 goes back Former agent is mixed, then denitration reaction occurs simultaneously by the accumulation of heat of denitration heat storage 22, finally by the discharge of the second opening 24.
The utility model industry kiln gas accumulation of heat denitrification apparatus is using collection accumulation of heat and the novel denitration of denitration function integration Heat storage, its surface is smooth, wear-resisting, denitration heat storage service life length, adapts to 600 DEG C or so flue gases of higher temperature and enters institute State denitration heat storage, flue gas can carry out denitration reaction without depth dedusting, and stability is good, and light-off temperature is low, have at 180 DEG C compared with Good denitration efficiency, denitration efficiency is high, reduces and denitration heat storage usage amount is commonly used in current industry field, and denitration cost is low. Secondly, high-temperature flue gas caused by burning enters accumulation of heat denitration region after high-temperature thermal storage body recovery is cooled to 300 DEG C~700 DEG C, Cancel low-temperature heat accumulating body, using denitration heat storage, the further accumulation of heat of flue gas completes denitration reaction while cooling, removes nitrogen oxidation Externally discharged after thing, energy-efficient, environmentally friendly, system compact.In addition, flue gas enters denitration heat storage, it is complete in denitration heat storage Into further cooling and being sufficiently mixed, until denitration catalyst reaction is completed, ammonia-spraying grid need to be set by eliminating conventional denitrating system Etc device.
According to embodiment of the present utility model, multiple denitration heat storages, the out of stock accumulation of heat are provided with denitration heat-accumulating area Area includes center and external zones, and the denitration accumulation of heat volume density arranged in the center is more than the de- of the interior arrangement of the external zones Nitre accumulation of heat volume density.Inventor has found, by the way that multiple denitration heat storages are arranged in out of stock heat-accumulating area in the manner described above, It is optimal in reducing agent dosage equal conditions, denitration efficiency.
According to embodiment of the present utility model, as described in Figure 3, the denitration heat storage of the center divides into multiple rows of multiple row Cloth.The center is rectangular area, and the external zones is rectangular box-like, and the external zones is set around the center, institute The denitration heat storage for stating external zones is divided into multi-turn, and the nested setting successively from inside to outside of denitration heat storage described in multi-turn.Each circle Multiple denitration heat storages be circumferentially spaced arrangement.Thus, inventor has found, using above-mentioned arrangement, denitration accumulation of heat Body distribution more rule, it is possible thereby to which so that uniform denitration reaction occurs for flue gas.Above-mentioned special denitration accumulation of heat is used simultaneously Body arrangement, denitration cost is reduced while ensure that removal of nitrogen oxide rate.
Inventor has found, is more than external zones by the exhaust gas volumn of center, thus by the denitration heat storage of center in tight Close multiple rows of more column distributions, external zones are set around the center, and it arranges that density is less than center, it is possible thereby to so that logical A small amount of flue gas of a large amount of flue gases and external zones of crossing center can reach equal denitration dynamics, and then improve denitration efficiency And denitration effect.
According to specific embodiment of the utility model, the denitration heat storage 22 in denitration heat-accumulating area mainly uses band denitration work( The denitration heat storage 221 and common heat storage 222 of energy arrange that is, all installation band is de- for denitration region center according to Fig. 3 modes The denitration heat storage of nitre function;Denitration heat storage of the periphery with denitration function is fitted into common heat storage interval, is taken off Nitre surface of heat accumulator is coated with metal ion.
According to specific embodiment of the utility model, as shown in figure 3, the arrangement section of the denitration heat storage in denitration region with Exemplified by 9 × 9 pieces, the heat storage of denitration function, four peripheral rows, the four equal arranged for interval of row are all arranged in center 5 × 5.Pass through Engineering experiment verifies that the arrangement that the utility model uses, in reducing agent dosage equal conditions, denitration efficiency is better than other cloth Put mode.
According to embodiment of the present utility model, the denitration heat storage of any one circle is with an adjacent circle denitration heat storage in institute State circumferential upper interlaced arrangement.It is possible thereby to so that flue gas obtains equably denitration process.
According to specific embodiment of the utility model, for reductant nozzle including multiple, reductant nozzle is atomizer.By This uses effervescent atomization technology, and using high pressure air as atomizing medium, it is small mist to make the moment atomization that reducing agent sprays Drop, droplets particles can reach less than 40 μm, can be good at being well mixed with flue gas.
According to specific embodiment of the utility model, atomizer is ammonia atomization nozzle or urea atomizer.By This sprays into ammoniacal liquor or urea into flue gas as reducing agent.The oxide or metal alkaline in flue gas can effectively be reduced Compound.According to specific embodiment of the utility model, when atomizer is urea atomizer, i.e., using urea as reduction Agent is, it is necessary to which reducing agent spray is most arranged in the first heat storage unit and is located at high-temperature thermal storage body downstream.Urea liquid needs steam conduct It is atomized and transports medium.Thus former agent spray is most arranged in the first heat storage unit and is located at high-temperature thermal storage body downstream, can be by For high-temperature gas sensible heat to urea liquid heating atomization, atomizer need to use exotic material, and Nozzle angle, aperture etc. Parameter influences atomizing effect.
Industrial furnace is that gas fuel combustion directly heats mode, and raw material is low through the processing of coal-based direct reduction rotary hearth furnace in stove The metallized pellet that the pressing such as grade iron ore powder and carbon, binding agent forms, industrial furnace running temperature are 1600 DEG C.Gas fires Material is burnt by being arranged on the spout of body of heater side wall and spraying into stove, material melted by heating and slag sluicing system is carried out in stove, by slag Iron or other metallic elements control below 2%.Carbon residue in material is protected with generating CO after metallized pellet further reaction Reducing atmosphere inside industrial furnace has been demonstrate,proved, regenerative apparatus is flowed through together with flue gas caused by gas fuel combustion and carries out fume afterheat Discharged out of the furnace after recovery and removal of nitrogen oxide processing.
Illustrated by taking side industry kiln gas accumulation of heat denitrification apparatus as an example, the burner hearth internal high temperature flue gas is from industrial furnace The spout arranged on side wall comes out, and after the high-temperature thermal storage body, temperature is after 1500 DEG C or so are reduced to 700 DEG C~800 DEG C Enter the denitration heat storage under conditions of the reducing agent spout sprays into reducing agent, complete sinking for uniformly mixing and dust Drop, flue-gas temperature enter denitration heat storage at 600 DEG C or so, due to using novel denitration heat storage, adapt to flue gas higher temperatures Degree enters the denitration heat storage, further reduces temperature and carries out denitration reactions for 420 DEG C or so to catalyst activity temperature province, Go after denitrification to enter flue through reversal valve through the exhanst gas outlet, temperature is arranged outside less than 150 DEG C.The reducing agent Sprayed by reductant nozzle, after being mixed with the flue gas after high-temperature thermal storage body recovery waste heat, together into denitration heat storage simultaneously Uniformly mixing, and the sedimentation of dust is completed in the denitration heat storage with denitrating catalyst, reduction reaction occurs, removes nitrogen Oxide, removal efficiency is up to more than 90%.Using novel denitration heat storage, reduce and denitration storage is commonly used in current industry field Hot body usage amount, denitration cost is reduced, and anti-clogging, Corrosion Protection obtain larger raising.
According to specific embodiment of the utility model, in the bottom of the first heat storage unit 10, under high-temperature thermal storage body 11 Side is provided with decanting zone, slows down in the region flue gas flow rate, and the dust natural subsidence in flue gas is got off, subsequently into Pen An areas and It is outer after denitration heat-accumulating area removing nitrogen oxides to arrange.According to specific embodiment of the utility model, decanting zone is additionally provided with flue gas blowback System, the partial fume after denitration process are returned, and regularly decanting zone is carried out to purge ash disposal processing, can be moderately lowered into The dust content of denitration heat-accumulating area., can be fine meanwhile the CO also having in the flue gas reacts favourable to Catalytic Decomposition of Nitric Oxide Improve the reactivity of denitrating catalyst in ground.
In order to facilitate the industrial kiln gas accumulation of heat denitrification apparatus of the utility model above-described embodiment is understood, below to utilizing work The method of the industrial kiln gas of industry kiln gas accumulation of heat denitrification apparatus processing is described in detail.
According to embodiment of the present utility model, this method includes:Industrial kiln gas is entered in the first heat storage unit and pass through height Intermediate temperature regenerator body carries out the first cooling, to obtain low-temperature flue gas;Make low-temperature flue gas enter the second heat storage unit in and reductant nozzle The reducing agent mixing of penetrating, to obtain mixed flue gas;The mixed flue gas is set to carry out the second cooling simultaneously by denitration heat storage It is catalyzed the low-temperature mixed flue gas and reduction reaction occurs, is discharged to obtain flue gas after denitration.
The method of the industrial kiln gas of processing of the utility model embodiment is new using collection accumulation of heat and denitration function integration Type denitration heat storage, its surface is smooth, wear-resisting, denitration heat storage service life length, adapts to 600 DEG C or so flue gases of higher temperature Into the denitration heat storage, flue gas can carry out denitration reaction without depth dedusting, and stability is good, and light-off temperature is low, 180 DEG C have preferable denitration efficiency, denitration efficiency is high, reduces and denitration heat storage usage amount is commonly used in current industry field, denitration into This is low.Secondly, high-temperature flue gas caused by burning takes off after high-temperature thermal storage body recovery is cooled to 300 DEG C~700 DEG C into accumulation of heat Nitre area, cancel low-temperature heat accumulating body, using denitration heat storage, the further accumulation of heat of flue gas completes denitration reaction while cooling, removes Externally discharged after nitrogen oxides, energy-efficient, environmentally friendly, system compact.In addition, flue gas enters denitration heat storage, in denitration accumulation of heat Complete further to cool and be sufficiently mixed in vivo, until denitration catalyst reaction is completed, spray need to be set by eliminating conventional denitrating system The device of ammonia grid etc.
According to specific embodiment of the utility model, denitration heat storage includes ceramic honeycomb thermal accumulator body and loads the ceramics Out of stock catalyst on honeycomb heat accumulation body, the out of stock catalyst include tungsten zirconium mixed oxide and precious metals pt, wherein, it is described The load capacity of tungsten zirconium mixed oxide is 5-30 weight %, and the load capacity of precious metals pt is 0.01-2.0 weight %.Wherein, it is described Ceramic honeycomb thermal accumulator body is made up of inorganic powder and additive, and the inorganic powder includes 20-30 weight % flint clay, 3-8 Weight % corundum, 1-5 weight % aluminum oxide, 8-12 weight % kaolin, 15-20 weight % feldspar, 10-20 weights % quartz and 10-15 weight % cordierite are measured, the mol ratio of tungsten and zirconium is (0.5~5) in the tungsten zirconium mixed oxide: 1。
According to embodiment of the present utility model, denitration heat storage can be spherical, strip or honeycomb ceramics shape etc..If denitration stores Hot body is spherical, and denitration heat storage diameter can be 3~6mm;If denitration heat storage is strip, denitration heat storage is cylindrical Shape, diameter can be 3~6mm, and length can be 10~60mm;Can be cuboid, pros if denitration heat storage is cellular Body, or circle, sector, ellipse etc., size typically can be 150mm × 150mm × 150mm or 250mm × 200mm × 150mm etc., the section of through hole is square on denitration heat storage, size be 10mm × 10mm, 15mm × 15mm or 20mm × 20mm, or hole section are circle, then aperture is 10mm, 15mm or 20mm.Profile, size, aperture can according to specific operating mode, make Determined after being considered with composite factors such as environment.Honeycomb ceramics shape is preferable, because the specific surface area phase of honeycombed catalyst Big compared with the catalyst of other shapes, the contact surface of catalyst and reaction medium is bigger, and catalytic reaction is more efficient.When catalyst is During honeycomb ceramics shape, the specific surface area of catalyst is in 500m2/m3More than, mechanical strength > 8MPa, the removal efficiency of nitrogen oxides is reachable More than 90%.
According to embodiment of the present utility model, the horizontal section of the Faveolate denitration heat storage with denitration function is square, chi Very little is 150mm × 150mm × 200mm, and through hole is from the square that section is 20mm × 20mm on denitration heat storage.Due to from work Contain a large amount of dust in the high-temperature flue gas that industry stove comes out, but the utility model is according to the applicable type of furnace, creatively by denitration accumulation of heat Intensive centered on denitration heat storage arrangement design in area, periphery is sparse, and high-temperature dust-containing flue gas is first out of first heat storage unit Natural subsidence, subsequently into denitration heat storage, the part dust in flue gas can be settled, avoid high-temperature region heat storage and block. And the utility model, using the denitration heat storage that metal ion is coated with surface, its channel inner surface is smooth, wear-resisting, has Good anti-stifled, corrosion resistance, can reach from the cellular heat storage and arrangement with denitration function of above-mentioned size Good denitration effect, denitration cost are low.
Industrial furnace uses heat storage type combustion mode, passes through thing in caused heat stove during gas fuel combustion Material, the gaseous fuel and/or air for participating in burning are heated by the hold over system after recovery high-temperature flue gas waste heat respectively, can be by gas Fuel and/or air are preheated to more than 1000 DEG C respectively, 1500 DEG C or so of industrial furnace running temperature.The flue gas is mainly by burning During caused CO2, the CO compositions that are thermally generated of the carbon during nitrogen oxides and material melting, be also accompanied by thing in stove Expect caused a large amount of dust in course of reaction.The flue gas enters de- after the hold over system recovery heat being arranged at nozzle Nitre system, the nitrogen oxides in flue gas react in the presence of denitrating catalyst with reducing agent, or with the reproducibility in flue gas Gas CO reaction generations N2, reach the removing nitrogen oxides i.e. purpose of denitrating flue gas.
The industrial furnace material is black, the coloured or nonmetallic pellet handled through coal-based direct reduction rotary hearth furnace, 700 DEG C hot charging or the metallized pellet (DRI) of cold charge, therefore, material is heated reduction reaction occurs while can be accompanied by it is substantial amounts of Dust produces.
Under at least being had according to industrial the kiln gas accumulation of heat denitrification apparatus and method of denitration of the utility model above-described embodiment One of row advantage:
(1) novel denitration heat storage is used, surface is smooth, wear-resisting, denitration heat storage service life length, adapts to higher temperatures 600 DEG C or so flue gases of degree enter denitration heat storage, and flue gas can carry out denitration reaction without depth dedusting, and stability is good, rise and live Temperature is low, there is preferable denitration efficiency at 180 DEG C, and denitration efficiency is high, reduces and denitration heat storage is commonly used in current industry field Usage amount, denitration cost are low;
(2) high-temperature flue gas caused by burning takes after accumulation of heat recovery is cooled to 300 DEG C~700 DEG C into accumulation of heat denitration, Cancel low-temperature heat accumulating body, using denitration heat storage, the further accumulation of heat of flue gas completes denitration reaction while cooling, removes nitrogen oxidation Externally discharged after thing, energy-efficient, environmentally friendly, system compact;
(3) flue gas enters denitration heat storage, completes further to cool and be sufficiently mixed in denitration heat storage, until denitration Catalytic reaction is completed, and the device of ammonia-spraying grid etc need to be set by eliminating conventional denitrating system;
(4) special denitration heat storage arrangement, reduces denitration cost while ensure that removal of nitrogen oxide rate.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally;Can be Mechanically connect or electrically connect;Can be joined directly together, can also be indirectly connected by intermediary, can be two The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term Identical embodiment or example need not be directed to by stating.Moreover, specific features, structure, material or the feature of description can be Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area Technical staff can be carried out the different embodiments or example and the feature of different embodiments or example described in this specification With reference to and combination.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Claims (9)

  1. A kind of 1. industrial kiln gas accumulation of heat denitrification apparatus, it is characterised in that including:
    First heat storage unit, high-temperature thermal storage body is provided with first heat storage unit, and the top of first heat storage unit has first Opening;
    Second heat storage unit, is followed successively by Pen An areas and denitration heat-accumulating area in second heat storage unit from the bottom to top, in the Pen An areas Reductant nozzle is provided with, is provided with denitration heat storage in the denitration heat-accumulating area, the top of second heat storage unit has the Two openings, the second heat storage unit bottom is connected with the bottom of first heat storage unit.
  2. 2. industrial kiln gas accumulation of heat denitrification apparatus according to claim 1, it is characterised in that set in the denitration heat-accumulating area Multiple denitration heat storages are equipped with, the denitration heat-accumulating area includes center and external zones, and the denitration arranged in the center stores Hot volume density is more than the denitration accumulation of heat volume density of arrangement in the external zones.
  3. 3. industrial kiln gas accumulation of heat denitrification apparatus according to claim 2, it is characterised in that the denitration of the center stores Hot body is into multiple rows of more column distributions.
  4. 4. industrial kiln gas accumulation of heat denitrification apparatus according to claim 3, it is characterised in that the center is rectangle region Domain, the external zones are rectangular box-like, and the external zones is set around the center.
  5. 5. industrial kiln gas accumulation of heat denitrification apparatus according to claim 4, it is characterised in that the denitration of the external zones stores Hot body is divided into multi-turn, and the nested setting successively from inside to outside of denitration heat storage described in multi-turn.
  6. 6. industrial kiln gas accumulation of heat denitrification apparatus according to claim 5, it is characterised in that multiple denitrations of each circle store Hot body is circumferentially spaced arrangement.
  7. 7. industrial kiln gas accumulation of heat denitrification apparatus according to claim 6, it is characterised in that the denitration accumulation of heat of any one circle Body encloses denitration heat storage interlaced arrangement in the circumferential direction with adjacent one.
  8. 8. industrial kiln gas accumulation of heat denitrification apparatus according to claim 1, it is characterised in that the reductant nozzle includes Multiple, the reductant nozzle is atomizer.
  9. 9. industrial kiln gas accumulation of heat denitrification apparatus according to claim 8, it is characterised in that the atomizer is ammoniacal liquor Atomizer or urea atomizer.
CN201621442168.9U 2016-12-26 2016-12-26 Industrial kiln gas accumulation of heat denitrification apparatus Active CN207025034U (en)

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