CN202793047U - Ferroalloy electric furnace gas heat recovery boiler - Google Patents
Ferroalloy electric furnace gas heat recovery boiler Download PDFInfo
- Publication number
- CN202793047U CN202793047U CN2012205013292U CN201220501329U CN202793047U CN 202793047 U CN202793047 U CN 202793047U CN 2012205013292 U CN2012205013292 U CN 2012205013292U CN 201220501329 U CN201220501329 U CN 201220501329U CN 202793047 U CN202793047 U CN 202793047U
- Authority
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- China
- Prior art keywords
- cylinder
- partition wall
- header
- flue gas
- annular header
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001021 Ferroalloy Inorganic materials 0.000 title claims description 7
- 238000011084 recovery Methods 0.000 title 1
- 238000005192 partition Methods 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 239000002918 waste heat Substances 0.000 claims abstract description 11
- 230000005855 radiation Effects 0.000 claims abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000000779 smoke Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 9
- 229910000640 Fe alloy Inorganic materials 0.000 abstract description 8
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 4
- 150000001340 alkali metals Chemical class 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000004939 coking Methods 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 235000014171 carbonated beverage Nutrition 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
本实用新型公开了一种铁合金电炉烟气余热锅炉，它包括圆筒体和圆筒体内的竖直隔墙，圆筒体和竖直隔墙均为膜式水冷壁，竖直隔墙将圆筒体分隔成弧长不等的两段圆弧筒体，较长圆弧筒体和竖直隔墙之间围成辐射冷却室，较短圆弧筒体和隔墙之间围成对流换热室；辐射冷却室的上端有上环形集箱、下端有下环形集箱，上环形集箱通过上升管连接有位置高于所述圆筒体上端面的锅筒，锅筒有下降管连接到下环形集箱。通过辐射冷却室将高温含尘烟气冷却到碱金属烟尘的熔点温度以下变成尘粒析出下落，烟气继续经对流室的对流屏冷却后排放，克服了现有技术积灰、结焦的缺陷，为烟气的输送、深度净化创造了有力条件，也延长装置的使用寿命。还能产生蒸汽供使用。
The utility model discloses an iron alloy electric furnace flue gas waste heat boiler, which comprises a cylinder body and a vertical partition wall inside the cylinder body, the cylinder body and the vertical partition wall are both membrane-type water-cooled walls, and the vertical partition wall The cylinder is divided into two arc cylinders with different arc lengths. The longer arc cylinder and the vertical partition wall form a radiation cooling chamber, and the shorter arc cylinder and the partition wall form a convection cooling chamber. Heat chamber; the upper end of the radiation cooling chamber has an upper annular header, and the lower end has a lower annular header. The upper annular header is connected to a drum that is higher than the upper end surface of the cylinder through a rising pipe, and the drum is connected by a downcomer. to the lower ring header. The high-temperature dust-laden flue gas is cooled to below the melting point of the alkali metal fume through the radiation cooling chamber, and the dust particles are precipitated and fallen, and the flue gas continues to be discharged after being cooled by the convection screen in the convection chamber, which overcomes the defects of the existing technology of ash accumulation and coking , It creates powerful conditions for the transportation and deep purification of flue gas, and also prolongs the service life of the device. It can also generate steam for use.
Description
Technical field
The utility model relates to a kind of waste heat boiler, particularly a kind of smoke and waste steam boiler.
Background technology
At present, there are iron alloy electric furnace more than 1000 platforms in each ferroalloy enterprise of China, and the 16500kV.A electric furnace is one of electric furnace of the most frequently used specification.Along with the raising of technical equipment and environmental requirement, existing newly-built and electric furnace technological transformation adopts the totally enclosed type electric furnace mostly.Totally-enclosed electric furnace can produce a large amount of CO high-temperature high dust flue gases that contain in smelting process, the cooling of this high-temperature high dust flue gas and UTILIZATION OF VESIDUAL HEAT IN are problem demanding prompt solutions.
At present, the waste heat boiler for flue of China generally adopts the form waste heat boilers such as heat pipe boiler or water leg, all has dust deposition seriously and the normal phenomenon of moving even can not moving of impact.
The utility model content
The purpose of this utility model is and can effectively reduces flue-gas temperature, utilizes the waste heat boiler of pressing saturated vapor in the fume afterheat generation.
This iron alloy electric furnace smoke and waste steam boiler that the utility model provides, it is characterized in that: it comprises the vertical partition wall in cylinder and the cylinder, cylinder and vertical partition wall are fin panel casing, vertically partition wall is separated into two sections circular arc cylindrical shells that arc length does not wait with cylinder, surround radiant cooling room between ovaler arc cylindrical shell and the vertical partition wall, surround convection heat-exchange chamber between shorter circular arc cylindrical shell and the partition wall; The upper end of radiant cooling room has upper annular header, lower end that lower annular header is arranged, and upper annular header is connected with the drum that the position is higher than described cylinder upper surface by tedge, and drum has down-comer to be connected to lower annular header.
Described shorter circular arc cylindrical shell comprises the non-fin panel casing section of fin panel casing section and its lower end, the fin panel casing section is divided into two sections of upper shell and lower shells, every section two ends all are connected with perpendicular little annular header, each little annular header is connected with header of a plurality of levels uniformly along the circumference spacing, is connected with the convection current screen of fin panel casing between a header corresponding to every section cylindrical shell upper and lower side; Be connected with compensator between the little annular header of the little annular header of upper shell lower end and lower shell upper end.Described vertical partition wall comprises the vertical water screen tube on top and the horizontal water screen tube of its underpart, and the two ends that the upper end of vertical water screen tube is connected with header, horizontal water screen tube are connected with respectively vertical side header; Vertically the total height of partition wall is less than the height of described ovaler arc cylindrical shell.
The corresponding described upper shell section of described vertical partition wall stream interface is scribbled heat insulation pouring layer.
The big or small corresponding described cylinder size of described lower annular header, there is the conical ash bucket of convergent its lower end.
Little annular header, the header of described large annular header and upper shell upper end are located in the same horizontal plane; The non-fin panel casing metal cylinder corresponding with described cylinder arranged at the top on this plane, and this corresponding radiant cooling room place, cylindrical shell upper end has into mouth, corresponding convection cell place exhaust opening is arranged.
Enter the radiant cooling room of large cavity from the top from iron alloy electric furnace high-temperature dust-containing flue gas out, radiant heat transfer through fin panel casing, the flue gas of high temperature dust progressively is cooled to below the melting temperature of flue dust, makes flue dust become the solid grit and separate out and most of deposition is discharged from ash bucket.When flue gas arrives the bottom of radiant cooling room, flue gas in radiant cooling room behind the preliminary cooling and dedusting turns to enter the convection cell from the lower end of vertical partition wall and rises, further be cooled to the temperature of needs through the convection current screen of two stage membrane water-cooling wall, discharge from the exhaust opening of convection cell upper end at last, reach the effect that prevents dust stratification, coking, for conveying, the deep purifying of flue gas have been created strong condition, also service life of extension fixture.Fin panel casing utilizes drum to take full advantage of the sensible heat of flue gas as intermediate carrier in cooling high temperature flue gas, produces saturated vapor.In sum, the utility model also utilizes residual heat resources to produce economic benefit and energy savings when effectively solving coking and dust stratification.
Description of drawings
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is the plan structure schematic diagram (omission water pipe line) of Fig. 1.
The specific embodiment
As shown in Figure 1 and Figure 2, this iron alloy electric furnace smoke and waste steam boiler that the utility model provides, comprise the cylinder 3 and the vertical partition wall 19 that are fin panel casing, vertically partition wall 19 is separated into ovaler arc cylindrical shell 18 and the shorter circular arc cylindrical shell 20 that arc length does not wait with cylinder 3, surround radiant cooling room 1 between ovaler arc cylindrical shell 18 and the vertical partition wall 19, surround convection heat-exchange chamber 2 between shorter circular arc cylindrical shell 20 and the vertical partition wall 19.The upper end of radiant cooling room 1 has upper annular header 6, lower end that lower annular header 8 is arranged, and upper annular header 6 is connected with the drum drum 4 that the position is higher than the cylinder upper surface by tedge 16, and drum 4 has down-comer 15 to be connected to lower annular header 8.
Shorter circular arc cylindrical shell 20 comprises the non-fin panel casing section of fin panel casing section and its lower end, and the fin panel casing section is divided into 13 two sections of convection cell cylindrical shell 12 and lower convection cell cylindrical shells, and every section two ends all are connected with perpendicular little annular header 10.Little annular header 5 is connected with header 11 of a plurality of levels uniformly along the circumference spacing, is connected with the convection current screen 22 of fin panel casing between a header 11 corresponding to every section cylindrical shell upper and lower side.Be connected with compensator 26 between the little annular header 10 of the little annular header 10 of upper convection cell cylindrical shell 12 lower ends and lower convection cell cylindrical shell 13 upper ends.
Vertically partition wall 19 comprises the vertical water screen tube on top and the horizontal water screen tube of its underpart, and the two ends that the upper end of vertical water screen tube is connected with header 7, horizontal water screen tube are connected with respectively vertical side header 9; Vertically the total height of partition wall 19 is less than the height of ovaler arc cylinder 18.Vertically 12 sections of partition wall 19 corresponding upper convection cell cylindrical shells scribbles heat insulation pouring layer 27 to stream interface.
The header 7 of the little annular header 10 of upper annular header 6 and upper convection cell cylindrical shell 12 upper ends, vertical partition wall 19 upper ends is located in the same horizontal plane; The non-fin panel casing metal cylinder 21 corresponding with cylinder 3 arranged at the top on this plane, and this corresponding radiant cooling room 1 place, cylindrical shell upper end has smoke-intake pipe, corresponding convection heat-exchange chamber place that smoke exhaust pipe is arranged.
Operation principle of the present utility model is to utilize the low temperature feedwater to carry out heat exchange through fin panel casing and high-temperature electric resistance furnace flue gas, be cooled to send about 220 ℃ follow-up workshop section to purify and utilization the high-temperature electric resistance furnace flue gas, the heated while of water at low temperature can also produce steam by drum and produce economic benefit simultaneously.
Concrete workflow is as follows:
For flue gas system, the high-temperature electric resistance furnace flue gas enters radiant cooling room 1 from smoke inlet, guarantee that flue-gas temperature is down to below the alkali metal melting temperature, reaching alkali metal dirt separates out and most of purpose that deposits at radiant cooling room, low-temperature flue gas enters the convection heat transfer' heat-transfer by convection chamber through the further cooling of convection current screen of fin panel casing, flue gas is cooled to about 200 ℃ to discharge through the exhaust opening of upper convection cell cylindrical shell 12 upper ends, send follow-up workshop section to purify and utilize.Flue gas is when flowing through convection cell, and convection current is shielded dust stratification but noncoking, because radiant cooling room 1 is down to flue-gas temperature below the alkali metal melting temperature.The shunt valve of smoke-intake pipe and smoke exhaust pipe, connection smoke-intake pipe and smoke exhaust pipe all arranges butterfly valve 23.During start operating performance, the electric furnace flue gas temperature is lower than about 250 ℃, and directly by-passing goes to follow-up workshop section.
For therrmodynamic system, temperature is that the annular header 10 of 22 upper ends is shielded in the convection current that 120 ℃ feedwater is introduced in the convection cell cylindrical shell 12, corresponding a plurality of headers 11 are given in reallocation, each header 11 reallocation is to its convection current screen 22, feedwater imports upper convection cell cylindrical shell 12 lower ends from top to bottom again and props up accordingly header 11, after gather the little annular header 10 that enters convection cell cylindrical shell 12 lower ends, and then the little annular header 10 of 22 lower ends is shielded in the convection current that enters in the lower convection cell cylindrical shell 13, reallocation is to a header 11 of a plurality of corresponding convection current screens 22, and then distribute to corresponding convection current screen 22, water imports the header 11 that 22 upper ends are shielded in lower convection cell cylindrical shell 13 interior convection current from bottom to top again, after gather the little annular header 10 that enters lower convection cell cylindrical shell 13 upper ends, be the water a little less than saturation temperature in this annular header, deliver at last drum 4 and sent into again the lower annular header 8 of radiant cooling room 1 lower end by down-comer 15, the side header 9 of vertical partition wall 19, carry out forming the upper annular header 6 that steam water interface rises to radiant cooling room 1 upper end after the heat exchange heating through each water-cooling wall respectively again, the header 7 of vertical partition wall upper end, carbonated drink enters drum 4 by tedge 16, carry out at last carbonated drink separation in drum 4, saturation water reenters down-comer 15 Natural Circulation.The saturated vapor that produces is sent user or generating outside.
Supply channel is established feed-regulating valve 24 and backwater control valve 25.Nominal situation and worst hot case, feedwater is regulated according to the water level of drum 4; Worst cold case for guaranteeing the heat exchange efficiency of waste heat boiler, keeps the flue-gas temperature of exhaust opening not to be higher than 220 ℃, opens return water system, and regulates the heat convection ability that feedwater strengthens fin panel casing that strengthens.
The utility model is particularly suitable for supporting the use with the iron alloy electric furnace of 16500kV.A, and the design parameter of each parts is determined according to the duty parameter of iron alloy electric furnace.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205013292U CN202793047U (en) | 2012-09-27 | 2012-09-27 | Ferroalloy electric furnace gas heat recovery boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205013292U CN202793047U (en) | 2012-09-27 | 2012-09-27 | Ferroalloy electric furnace gas heat recovery boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202793047U true CN202793047U (en) | 2013-03-13 |
Family
ID=47820299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205013292U Expired - Fee Related CN202793047U (en) | 2012-09-27 | 2012-09-27 | Ferroalloy electric furnace gas heat recovery boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202793047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410514A (en) * | 2018-04-03 | 2018-08-17 | 山西阳煤化工机械（集团）有限公司 | The double headers of gasification furnace fin panel casing |
-
2012
- 2012-09-27 CN CN2012205013292U patent/CN202793047U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410514A (en) * | 2018-04-03 | 2018-08-17 | 山西阳煤化工机械（集团）有限公司 | The double headers of gasification furnace fin panel casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20200927 |