CN104165368A - Apparatus for cooling exhaust gases - Google Patents
Apparatus for cooling exhaust gases Download PDFInfo
- Publication number
- CN104165368A CN104165368A CN201310340465.7A CN201310340465A CN104165368A CN 104165368 A CN104165368 A CN 104165368A CN 201310340465 A CN201310340465 A CN 201310340465A CN 104165368 A CN104165368 A CN 104165368A
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- China
- Prior art keywords
- waste gas
- portion section
- equipment
- heat
- boiler portion
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
- F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Apparatus for cooling of exhaust gases, in particular exhaust gases from the production of pig iron, with a preferably a vertically oriented, or substantially vertically oriented first boiler section connected to a furnace, the exhaust gas vertically upward flows through the first boiler section, a second vertical or substantially vertical boiler section is connected to the first boil portion, the exhaust gas vertically upward flows through the second boiler section, a third boil portion is connected the second boil portion, the exhaust gas flows vertically upwards through the third boil portion and can be cooled to a temperature of 550 DEG C to 750 DEG C, a fourth boiler section is connected with the third boil portion, wherein the exhaust gas passes through the fourth boiler section vertically down and cooled to a temperature of less than 300 DEG C.
Description
Technical field
The present invention relates to a kind of equipment for cooling exhaust, the waste gas particularly manufactured from the pig iron, comprise and be preferably connected on stove, vertically-oriented or vertically-oriented the first boiler portion section substantially, this the first boiler portion section is by waste gas percolation straight up, wherein vertical connecting or vertical the second boiler portion section substantially in the first boiler portion section, this second vertical boiler portion section is by waste gas percolation straight down.
Background technology
The equipment of the above-mentioned type is for example known by EP1 772 672A1.The equipment for cooling exhaust so proved in practice.In putting into practice known equipment for example the waste gas from the smelting reduction stove for pig iron manufacture by means of heat exchanger, be cooled to the temperature of 750 ℃.Utilization can not realize the further cooling of waste gas reliably by the known equipment of prior art.
Summary of the invention
The technical problem to be solved in the present invention is to provide the equipment of described one type of beginning, and it allows reliable cooling exhaust, and it can realize effective utilization of exhaust energy, and it can realize and be characterised in that the short investment payback time very simply.
In order to solve the problems of the technologies described above, equipment of the present invention is characterised in that, in the second boiler portion section, connect the 3rd boiler portion section, waste gas is flowed straight up and preferably can be cooled to the temperature of 550 ℃ to 750 ℃ by the 3rd boiler portion section, in the 3rd boiler portion section, connect the 4th boiler portion section, waste gas is guided and is cooled to by the 4th boiler portion section the temperature that is less than 300 ℃ straight down.Particularly preferably be equipment according to the present invention for the cooling waste gas of manufacturing from the pig iron.The carbon dioxide content for example from the waste gas of pig iron manufacture with the carbon monoxide content of about 12 percents by volume, the hydrogen content of about 4 percents by volume and about 27 percents by volume.Likely, from the waste gas of pig iron manufacture, be greater than the sulphur hydrogen and the nitrogen oxide that is greater than 20ppm of 400ppm.
An important embodiment of the present invention is characterised in that, by the mobile waste gas of each single boiler portion's section, in crossing, depresses.The internal gas pressure of the flow channel in each single boiler portion section advantageously higher than atmospheric pressure 0.6 to 1bar, preferably higher than atmospheric pressure 0.7 to 0.9bar and particularly preferably higher than the about 0.8bar of atmospheric pressure.Infiltrate waste gas in the first boiler portion section and conventionally there is 1200 ℃ to 1600 ℃, preferably 1300 ℃ to 1500 ℃, the gas temperature of about 1450 ℃ particularly preferably.
The stove preferably pig iron is manufactured stove.This stove can be blast furnace alternatively.According to an embodiment, on this stove, connect the exhaust steam passage portion section of a level, should in the exhaust steam passage portion section of level, connect the first boiler portion section.On the upper end of the first boiler portion section, waste gas imports in the second boiler portion section via turning part section.A dust discharger is preferably set on the bottom of the second boiler portion section, and the dust comprising in waste gas by this dust discharger is collected and is removable from the second boiler portion section.Likely, every Nm
3the waste gas dust and the every Nm that comprise 10 to 60 grams
3waste gas preferably comprise the dust of about 20 grams.
Suggestion waste gas in the 3rd boiler portion section is cooled to a temperature, and it compares preferably little about 80 ℃ to 120 ℃ and preferred embodiment little about 100 ℃ according to one with the temperature of waste gas on end in the second boiler portion section.Particularly preferably, waste gas has the temperature of about 700 ℃ to 800 ℃ on the end of the second boiler portion section.
Suggestion waste gas is cooled in the first boiler portion section and/or in the second boiler portion section, and at least a portion of the heat that its mode is container is passed to cooling medium.Advantageously cooling medium is conducted through cooling tube in the first boiler portion section and/or in the second boiler portion section, the inwall of this cooling tube lining the first boiler portion section and/or the inwall of the second boiler portion section.Likely, cooling medium is conducted through curtain wall in the second boiler portion section, and wherein in curtain wall, heat is passed to cooling medium from waste gas.
According to a particularly preferred embodiment, the inwall of the 3rd boiler portion section is designed to be with tube passage.Band tube passage particularly refers to, and the exhaust steam passage providing by the 3rd boiler portion section has a wall, and this wall adds and is lined with cooling tube.By cooling tube, advantageously cooling medium is directed.In the 3rd boiler portion section, preferably connect an other turning part section, in this turning part section, waste gas is directed in the 4th boiler portion section.
Preferably the waste gas in the 4th boiler portion section has the temperature of 600 ℃ to 700 ℃.The input of the 4th boiler portion section particularly refers to portion's section of the 4th boiler portion section, and this section is connected in described other turning part section.Particularly preferably, the waste gas on the input of the 4th boiler portion section has the temperature of about 680 ℃.Suggestion waste gas has the temperature of about 250 ℃ on the output of the 4th boiler portion section.The output of the 4th boiler portion section preferably refers to the 4th boiler portion section and the opposed end of input the 4th boiler portion section.
According to an embodiment, the 4th boiler portion section has a pressure vessel, is provided for the mobile vertical shaft of waste gas in this pressure vessel.Preferred flow vertical shaft so seals hermetically with respect to pressure vessel convection cell, makes waste gas only from the 3rd boiler portion section, flow into and flow vertical shaft.The input end segments of preferred flow vertical shaft is separated hermetically with respect to the inner chamber convection cell of pressure vessel.Likely, flow that to be designed to the inner chamber of pressure vessel be fluid communication for the end back to the 3rd boiler portion section of vertical shaft.In principle likely, be cooled to maximum 300 ℃ and preferably approximately the waste gas of 250 ℃ of temperature from the vertical shaft that flows, in the end back to the 3rd boiler portion section of the vertical shaft that flows, discharge and penetrate in pressure vessel.According to a preferred embodiment, pressure in pressure vessel or the waste gas in the inner chamber of pressure vessel just in time equals or roughly just in time equals the pressure (operating pressure) of the waste gas in mobile vertical shaft.Advantageously pressure vessel and/or mobile vertical shaft can, higher than atmospheric pressure 0.6bar to 1bar, preferably move under the operating pressure higher than atmospheric pressure 0.7bar to 0.9bar, preferably move under the operating pressure higher than the about 0.8bar of atmospheric pressure.Suggestion pressure vessel and/or mobile vertical shaft are pressure stabilitys, until for example 1.6 of atmospheric pressure times.Suggestion pressure vessel has cross section circular, circular substantially.The diameter of pressure vessel can be 5 to 10m and preferably 6 to 7 meters.The vertical shaft that advantageously flows utilizes holding element to be fixed in pressure vessel.Except holding element, between pressure vessel and mobile vertical shaft, preferably there is not contact.Be arranged in pressure vessel to the centering of preferred flow vertical shaft, a free space is wherein set between pressure vessel and mobile vertical shaft.This free space between pressure vessel and mobile vertical shaft preferably can not be by waste gas percolation.The 4th boiler portion section is so connected to described other turning part section or is connected in the 3rd boiler portion section, and waste gas is only directed in the mobile vertical shaft of the 4th boiler portion section.The vertical shaft that advantageously flows has enclosing or sidewall, its particularly by with respect to carbon monoxide, hydrogen sulfide and glassware for drinking water, have a repellence or corrosion-resistant material manufacture.Pressure vessel can have for example length of 30mm together with the mobile vertical shaft arranging therein.
Within the scope of the invention, in the vertical shaft that flows, at least one heat-exchange device is set, utilizes described heat-exchange device, heat can be passed to cooling medium from waste gas.Cooling medium is water or steam particularly.Cooling medium is water or steam particularly.Preferably the Btu utilization heat-exchange device of waste gas is passed to cooling medium, wherein preferably produces steam or overheated steam.Heat-exchange device for example can have 10 within the scope of the invention to 15m
2, 14m preferably approximately
2cross-sectional area.Utilization is according to equipment of the present invention, and the heat of waste gas can be passed to cooling medium, until waste gas is for example cooled to 300 ℃ and the temperature of 250 ℃ preferably approximately.Advantageously utilize to utilize equipment according to the present invention to compare and can obtain larger quantity of steam with utilizing by putting into practice known equipment.
Advantageously in the vertical shaft that flows, a plurality of heat exchanger devices are set.According to an embodiment, 4 to 10 heat exchanger devices are set in the mobile vertical shaft of pressure vessel.According to a particularly preferred embodiment, mobile vertical shaft has eight heat exchanger devices.
According to a particularly preferred embodiment, in the vertical shaft that flows, two groups of heat exchanger devices are set.Preferably utilize first group of heat exchanger device waste gas to be cooled to the temperature of about 350 ℃ to 450 ℃, be preferably cooled to the temperature of about 400 ℃.Within the scope of the invention, second group of heat exchanger device of exhaust gas utilization is cooled to the temperature of 200 ℃ to 300 ℃ and is preferably cooled to the temperature of about 250 ℃.
Advantageously described first group for example has four heat exchanger devices, these heat exchanger devices layout that is connected in parallel to each other.According to an embodiment, second group of heat exchanger device arranged in series.Likely, first group and second component do not have the heat exchanger device of equal number, for example four heat exchanger devices.
Advise that a heat exchanger device has at least one cooling tube, this cooling tube is wound in a plane or the cooling worm in a plane substantially.Advantageously heat exchanger device has a plurality of cooling tubes, and wherein, these cooling tubes are wound into respectively in a plane or the cooling worm in a plane (pipe coiled pipe) and the medium percolation that is in the same way cooled respectively substantially.Preferably, the cooling worm of a heat exchanger device is arranged in parallel or is connected to one for the intake line of cooling medium.Advantageously, each cooling worm of a heat exchanger device forms identical or substantially the samely.Particularly preferably, each single plane is parallel to each other or is substantially directed in parallel to each other.According to an embodiment, heat exchanger device has 10 to 60, preferred 20 to 30 cooling tubes.Particularly preferably, a heat exchanger device has 24 cooling tubes.In principle likely, the cooling tube arranging in each adjacent plane misplaces toward each other and arranges.
Already proved advantageously, the cooling worm separate provision by heat exchanger device is transverse to the flow direction of waste gas or the cooling and plane of level or substantial horizontal orientation.Guaranteed that in this way waste gas at least one heat exchanger device described in percolation in the situation that streaming described cooling tube obtains thus favourable cooling effect and realizes the effective heat of heat from waste gas to cooling medium and transmit.Preferably heat-exchange device have 10 to 40, preferred 15 to 30 cooling and planes.According to an embodiment, a heat exchanger device has 24 cooling and planes.
According to an embodiment, the cooling tube of a heat exchanger device or the vertical spacing of cooling and plane are 50 to 200mm and are preferably approximately 100mm.The vertical thickness of heat exchanger device is preferably 1000 to 4000mm and be preferably 2000 to 2500mm.According to a particularly preferred embodiment, the vertical thickness of heat exchanger device is about 2300mm.Thickness refers to the size of heat exchanger device in vertical direction or exhaust gas flow direction especially.
Within the scope of the invention, the vertical spacing between two heat exchanger devices is 600mm to 1200mm.Preferably the vertical spacing between two heat exchanger devices is 800mm to 1000mm.
Suggestion, heat exchanger device has the cross section of rectangle or substantial rectangular.Particularly preferably, heat exchanger device has foursquare cross section.For example, the side length of the foursquare cross section of heat exchanger device is 3.7 meters long.Likely, all heat exchanger devices in pressure vessel have identical or substantially the same cross-sectional area.
Advantageously at least one cleaning device can move in portion's section on a top of the vertical shaft that flows (waste gas can be cooled to the temperature of 500 ℃ at the most in portion's section on this top) and can from the vertical shaft that flows, shift out.Advantageously utilize cleaning device can remove the deposit on heat exchanger device.In principle likely, all heat exchanger devices in heat exchanger device can be removed deposit by means of being moved in the vertical shaft that flows and from the extensible cleaning device of vertical shaft that flows.Suggestion cleaning device is designed to the preferably nozzle of rotation, by described nozzle heat exchanger device, can be loaded cleaning agent.Advantageously, cleaning device is only just moved into and flows in vertical shaft when cleaned dose of heat exchanger device loads.If do not realize the clean of heat-exchange device in portion's section on the top of the vertical shaft that flows, so under the state of cleaning device in shifting out or cleaning device from the vertical shaft that flows, shift out.The cleaning device that is advantageously designed to the nozzle of rotation has two preferably along the opposed nozzle bore of diameter on a free end, by these nozzle bore cleaning agents, when heat exchanger device is clean, is discharged from.Particularly preferably cleaning device is arranged in portion's section on top of the vertical shaft that flows between two adjacent heat exchanger devices.In other words, utilize the cleaning device in the mobile vertical shaft on top, the deposit on the heat exchanger device of two settings adjacent one another are can be removed.
According to a favourable embodiment, in portion's section of a bottom of the vertical shaft that flows, (in the portion's section in this bottom, waste gas has the temperature that is less than 500 ℃) arranges at least one and extend into enduringly the fixing cleaning device in flow channel, and it preferably has a plurality of nozzle bores.Within the scope of the invention, by nozzle bore, cleaning agent is injected on heat exchanger device.According to an embodiment, fixing cleaning device can not remove from the vertical shaft that flows, and wherein the displacement of fixing cleaning device so realizes when fixing cleaning device operation, make all or substantially all deposits on heat exchanger device be removed.Suggestion arranges a fixing cleaning device between two adjacent heat exchanger devices.Nozzle bore in fixing cleaning device is preferably so arranged in fixing cleaning device, makes to realize above fixing cleaning device is vertical and the cleaning agent loading of the heat exchanger device arranging below fixing cleaning device is vertical.Particularly preferably cleaning device and/or fixing cleaning device are carbon black hair-dryers.Cleaning agent is overheated steam preferably.In principle likely, application of air and/or nitrogen are as cleaning agent.
The present invention be take such understanding as basis, utilize according to equipment of the present invention in the future the waste gas of spontaneous iron be cooled to reliably the temperature of about 250 ℃.At this, utilize less structure consumes likely, the heat comprising in waste gas is for generation of overheated steam.Equipment according to the present invention is characterised in that advantageously less water consumption.In addition the present invention is based on such understanding, according to equipment of the present invention, can be incorporated into without problems the existing equipment for the cooling waste gas of manufacturing from the pig iron.According to the feature of equipment of the present invention, be in addition the investment payback time (payback period) of making us unexpectedly short.
Accompanying drawing explanation
The present invention elaborates by means of the accompanying drawing that an embodiment is only shown.Accompanying drawing schematically illustrates:
Fig. 1 illustrates the side view according to equipment of the present invention;
Fig. 2 illustrates according to the viewgraph of cross-section of the pressure vessel of Fig. 1.
The specific embodiment
A kind of equipment shown in Figure 1, it is for the cooling waste gas of manufacturing from the pig iron.This equipment has a stove 1, and waste gas is discharged from this stove.In the upper area 2 of stove 1, on stove 1, connect an exhaust steam passage 3, it has a first boiler portion section 4, one the second boiler portion section 5, the 3rd boiler portion section 6 and a 4th boiler portion section 7, is connected on stove.Waste gas is cooled to a temperature in exhaust steam passage 3 airtight and that be cooled, and this temperature is approximately 250 ℃ in this embodiment.Be not shown specifically in the accompanying drawings the further discharge after out from exhaust steam passage 3 of the waste gas that is cooled.
In this embodiment and with reference to the accompanying drawings 1, on the upper area 2 of stove 1, first connect exhaust steam passage portion section 8 level or that tilt a little, this exhaust steam passage portion section is transitioned in the first vertical boiler portion section 4.Waste gas then flow in the second vertical boiler portion section 5 via turning part section 9, and in this boiler portion section, waste gas is again guided downward.Exhaust steam passage 3 has the shape of the U putting upside down, has the exhaust steam passage portion section 8 of connection level thereon, and it is set up and being connected of the upper area 2 of stove 1.Waste gas from the upper area 2 inflow exhaust gas channel part sections 8 of stove has the temperature of about 1450 ℃ according to this embodiment and than the gas in overpressure of the high 0.8bar of atmospheric pressure.
Do not illustrate in the accompanying drawings, the wall of the first boiler portion section is cooling by cooling medium, and described cooling medium is directed by the cooling tube of the inwall of covering first passage portion section.Do not illustrate equally, in the second boiler portion section 5, be provided for the curtain wall of cooling exhaust.On end bottom side or foot's side of the second boiler portion section 5, a dust discharger 10 is set, utilizes this dust discharger can from exhaust steam passage 3, remove at the dust of separating from waste gas in service of exhaust steam passage 3.
The second boiler portion section 5 utilizes transition piece 11 to be connected in the 3rd boiler portion section 6, thus waste gas in the vertical direction percolation the 3rd boiler portion section 6 from bottom to top.Not shown in this embodiment, the inwall of the 3rd boiler portion section 6 utilizes pipe to cover, and cooling medium flows through these pipes.On upper end or in head side, in the 3rd boiler portion section, by means of an other turning part section 12, connect the 4th boiler portion section 7 that is designed to pressure vessel 13.In the 4th boiler portion section 7, waste gas flows in the contrary direction of the exhaust gas flow direction with in the 3rd boiler portion section 6.
Shown in Figure 1, a mobile vertical shaft 14 is set in pressure vessel 13, waste gas streams excess pressure container 13 in this mobile vertical shaft.In this external accompanying drawing 1, can find out, eight heat-exchange device 15a, 15b are set in mobile vertical shaft 14, wherein between two adjacent heat-exchange devices, mounting design becomes the cleaning device of carbon black hair-dryer 16a, 16b respectively.Preferably and according to this embodiment, additional carbon black hair-dryer 16a is set above the heat-exchange device 15a towards described other turning part section 12.Carbon black hair-dryer 16a 1 is designed to movably carbon black hair-dryer with reference to the accompanying drawings, and it is only just moved into and flows in vertical shaft 14 when needs clean heat-exchange device 15a.Carbon black hair-dryer 16b is designed to fixing carbon black hair-dryer, and it is positioned at enduringly and flows in vertical shaft 14.Attached not shown at these, heat-exchange device 15a, 15b can utilize the overheated steam being flowed out by carbon black hair-dryer 16a, 16b to load, to remove the deposit on heat-exchange device 15a, 15b.
Preferably and according to this embodiment, waste gas is imported in the mobile vertical shaft 14 of pressure vessel 13 with the temperature of about 680 ℃, and on the end of the pin side of the mobile vertical shaft 14 of pressure vessel 13, leave mobile vertical shaft with the temperature of about 250 ℃.The further heat treatment of waste gas after leaving pressure vessel 13 is not shown in the accompanying drawings.
In addition shown in Figure 1, each heat-exchange device 15a forms first group of heat-exchange device, wherein the heat-exchange device 15a layout that is connected in parallel to each other.Each heat-exchange device 15b forms second group of heat-exchange device 1 and is arranged in series with each other.Cooling medium is arranged in pin side the heat-exchange device 15b that enters and leave in head side by discharge line 20 as heated cooling medium in the heat-exchange device 15b flowing in vertical shaft 14 at one by intake line 19.Each single heat-exchange device 15a of first group sets respectively to the intake line for cooling medium that does not utilize Reference numeral to represent with for the discharge line of heated cooling medium.
According to heat-exchange device 15a, the 15b of Fig. 1, have respectively cooling tube 17, wherein each cooling tube 17 is wound into coiled pipe and on a plane or roughly arrange in a plane.By cooling tube 17, according to this embodiment, provide respectively heat-exchange device 15a, 15b, it has 24 transverse to the cooling and plane K of exhaust gas flow direction orientation.The cutaway view of cooling and plane K is shown in Figure 2.Visible in accompanying drawing 2, each cooling tube 17 guides and guides from pressure vessel 13 from the vertical shaft 14 that flows.Unshowned, cooling tube 17 is connected to a unshowned intake line for cooling medium in accompanying drawing 2.Two vertical spacings that are arranged on adjacent to each other the cooling and plane K in heat-exchange device 15a, 15b are 100mm in this embodiment.Preferably and with reference to the accompanying drawings 1, two heat-exchange device 15a, 15b are set in mobile vertical shaft 14, make the vertical spacing between these two heat-exchange devices be respectively 1000mm.
Flow vertical shaft 14 2 cross sections with a rectangle preferably and with reference to the accompanying drawings, the vertical shaft 14 that wherein flows is separated hermetically with inner chamber 18 convection cells of pressure vessel 13.This means, by the mobile waste gas of vertical shaft 14 that flows, can not enter into the inner chamber 18 of pressure vessel 13.The cross section that is arranged on flow heat-exchange device 15a, 15b in vertical shaft 13 corresponds essentially to the cross section of the vertical shaft 13 that flows.The vertical shaft 13 that flows in this embodiment has foursquare cross section, and it has the lateral length of 3.7m.
Formation due to heat-exchange device 15a, 15b, in mobile vertical shaft 14, guarantee, waste gas and cooling tube multi-touch, thereby guaranteed waste gas and cooling tube 17 multi-touchs, thereby guaranteed the strong energy exchange between waste gas and the cooling medium in pressure vessel 13 or in heat-exchange device 15a, 15b.In this way likely, utilize less cooling medium application, heat-exchange device 15a, the 15b of exhaust gas utilization in pressure vessel 13 is reliably from being cooled to 250 ℃ according to 680 ℃ of this embodiment.
Claims (15)
1. for cooling exhaust, the equipment of the waste gas in particularly manufacturing from the pig iron, comprise and be preferably connected on stove (1), vertically-oriented or vertically-oriented the first boiler portion section (4) substantially, this the first boiler portion section (4) is by waste gas percolation straight up, wherein in the upper vertical connecting of the first boiler portion section (4) or vertical the second boiler portion section (5) substantially, this second vertical boiler portion section (5) is by waste gas percolation straight down, it is characterized in that, in upper the 3rd boiler portion section (6) that connects of the second boiler portion section (5), waste gas is flowed straight up and preferably can be cooled to the temperature of 550 ℃ to 750 ℃ by the 3rd boiler portion section (6), in upper the 4th boiler portion section (7) that connects of the 3rd boiler portion section (6), waste gas is guided and is cooled to by the 4th boiler portion section (7) temperature that is less than 300 ℃ straight down.
2. equipment as claimed in claim 1, is characterized in that, the waste gas on the input of the 4th boiler portion section (7) has the temperature of 600 ℃ to 700 ℃.
3. equipment as claimed in claim 1 or 2, is characterized in that, the waste gas on the output of the 4th boiler portion section (7) has the temperature of about 250 ℃.
4. the equipment as described in one of above-mentioned claims 1 to 3, it is characterized in that, the 4th boiler portion section (7) has pressure vessel (13), in this pressure vessel (13), be provided for the mobile vertical shaft (14) of waste gas, and mobile vertical shaft (14) so seals hermetically with respect to pressure vessel (13) convection cell, waste gas is only flow into mobile vertical shaft (14) from the 3rd boiler portion section (6).
5. the equipment as described in one of the claims 1 to 4, it is characterized in that, at least one heat-exchange device (15a, 15b) is set in mobile vertical shaft (14), utilize described heat-exchange device (15a, 15b) heat can be passed to cooling medium from waste gas.
6. the equipment as described in one of the claims 1 to 5 item, is characterized in that, in mobile vertical shaft (14), a plurality of heat-exchange devices (15a, 15b) is set.
7. the equipment as described in claim 5 or 6, is characterized in that, a heat-exchange device (15a, 15b) has at least one cooling tube (17), and described cooling tube (17) is wound in a plane or the cooling worm in a plane substantially.
8. equipment as claimed in claim 7, it is characterized in that, a heat-exchange device (15a, 15b) have a plurality of cooling tubes (17), 10 to 60 cooling tubes (17) for example, these cooling tubes (17) are wound into respectively in a plane or the cooling worm in a plane and respectively equidirectional the medium percolation that is cooled substantially.
9. equipment as claimed in claim 8, is characterized in that, the cooling worm separate provision by heat-exchange device (15a, 15b) is transverse to the flow direction of waste gas or the cooling and plane (K) of level or substantial horizontal orientation.
10. the equipment as described in one of the claims 7 to 9, is characterized in that, the vertical spacing of each cooling and plane (K) is 50mm to 200mm, 100mm preferably approximately.
11. equipment as described in one of the claims 5 to 10, is characterized in that, the vertical spacing between two heat-exchange devices (15a, 15b) is 600mm to 1200mm.
12. equipment as described in one of the claims 5 to 11, is characterized in that, heat-exchange device (15a, 15b) has cross section rectangle or substantial rectangular.
13. equipment as described in one of the claims 5 to 12, it is characterized in that, portion's section that cleaning device (16a) can move into a top of mobile vertical shaft (14) neutralizes from wherein shifting out, in portion's section on this top, waste gas can be cooled to the temperature of 500 ℃ at the most, utilizes these cleaning devices (16a) can remove the deposit on heat-exchange device (15a).
14. equipment as claimed in claim 13, is characterized in that, cleaning device (16a) is designed to the preferably nozzle of rotation, and heat-exchange device (15a) can be loaded cleaning agent by these nozzles.
15. equipment as described in one of the claims 5 to 14, it is characterized in that, in portion's section of a bottom of the vertical shaft that flows, arrange and stretch into enduringly the cleaning device (16b) in vertical shaft, that there are a plurality of nozzle bores that flows, in portion's section of this bottom, waste gas has the temperature that is less than 500 ℃, and cleaning agent is sprayed on heat-exchange device (15b) by these nozzle bores.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202013102155.5 | 2013-05-16 | ||
| DE202013102155U DE202013102155U1 (en) | 2013-05-16 | 2013-05-16 | Device for cooling exhaust gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104165368A true CN104165368A (en) | 2014-11-26 |
Family
ID=48784212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310340465.7A Pending CN104165368A (en) | 2013-05-16 | 2013-08-07 | Apparatus for cooling exhaust gases |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104165368A (en) |
| DE (1) | DE202013102155U1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786397A (en) * | 2005-12-14 | 2006-06-14 | 孙克勤 | Chimney with preventing flue permeating corrosion and its method |
| EP1772672A1 (en) * | 2005-10-05 | 2007-04-11 | Oschatz Gmbh | Device for cooling exhaust gases |
| CN101025338A (en) * | 2005-10-05 | 2007-08-29 | 奥莎茨有限公司 | Apparatus for cooling waste gases |
| CN101078520A (en) * | 2007-07-05 | 2007-11-28 | 四川艾普高温技术应用有限责任公司 | High concentration organic waste liquid burning process and device |
| CN201053687Y (en) * | 2007-05-21 | 2008-04-30 | 张家港海陆锅炉有限公司 | High temperature high pressure natural circulation dry quenching coke residual heat boiler evaporator |
| CN103047659A (en) * | 2013-01-20 | 2013-04-17 | 北京华电光大新能源环保技术有限公司 | Burning process and burning boiler for processing high-density saliferous organic wastewater |
-
2013
- 2013-05-16 DE DE202013102155U patent/DE202013102155U1/en not_active Expired - Lifetime
- 2013-08-07 CN CN201310340465.7A patent/CN104165368A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1772672A1 (en) * | 2005-10-05 | 2007-04-11 | Oschatz Gmbh | Device for cooling exhaust gases |
| CN101025338A (en) * | 2005-10-05 | 2007-08-29 | 奥莎茨有限公司 | Apparatus for cooling waste gases |
| CN1786397A (en) * | 2005-12-14 | 2006-06-14 | 孙克勤 | Chimney with preventing flue permeating corrosion and its method |
| CN201053687Y (en) * | 2007-05-21 | 2008-04-30 | 张家港海陆锅炉有限公司 | High temperature high pressure natural circulation dry quenching coke residual heat boiler evaporator |
| CN101078520A (en) * | 2007-07-05 | 2007-11-28 | 四川艾普高温技术应用有限责任公司 | High concentration organic waste liquid burning process and device |
| CN103047659A (en) * | 2013-01-20 | 2013-04-17 | 北京华电光大新能源环保技术有限公司 | Burning process and burning boiler for processing high-density saliferous organic wastewater |
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| Publication number | Publication date |
|---|---|
| DE202013102155U1 (en) | 2013-06-06 |
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Application publication date: 20141126 |