CN104748571B - Mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger and exhaust heat recovering method - Google Patents
Mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger and exhaust heat recovering method Download PDFInfo
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- CN104748571B CN104748571B CN201510167087.6A CN201510167087A CN104748571B CN 104748571 B CN104748571 B CN 104748571B CN 201510167087 A CN201510167087 A CN 201510167087A CN 104748571 B CN104748571 B CN 104748571B
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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
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The present invention provides a kind of mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger, including slag runner masonry and locomotive；Described slag runner masonry is uncovered, is provided with lower branch air duct in it, and this lower branch air duct connects with the hot-blast outlet being arranged on slag runner masonry；Also there is in described slag runner masonry the circulation passage for slag circulation；Described locomotive includes top cover, and this top cover is provided with branch air duct；When top cover and the described slag runner masonry of described locomotive close up, described top cover cover slag runner masonry uncovered on, described upper branch air duct connects with circulation passage, lower branch air duct respectively.During deslagging, the present invention is in closed state, effectively prevents hyperthermia radiation thermal burn skin, significantly improve the labor condition of production scene, keep the safety in production also more secure, in the slag runner closed, utilize the high-grade waste heat of slag runner masonry, top cover accumulation heat recovery high-temperature fusion slag.
Description
Technical field
The present invention relates to the waste-heat recovery device in the fields such as metallurgy, phosphorous chemical industry and energy-conserving and environment-protective, particularly relate to a kind of regenerative heat exchanger utilizing mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger to reclaim high-temperature fusion slag high-grade waste heat.
Background technology
The fields such as metallurgy, phosphorous chemical industry and energy-conserving and environment-protective all produce this side-product of high-temperature fusion slag in process of production.These high-temperature fusion slags all have the feature such as high temperature, high enthalpy, belong to the residual heat resources of high-quality.If blast furnace slag is the by-product of blast furnace ironmaking, its temperature discharged from blast furnace is at 1450～1650 DEG C, and heat content is about 1870MJ/t；The melted phosphorus slag that yellow phosphorus electric furnace is discharged is typically in about 1400 DEG C, and its heat content is 1887.83kJ/kg, specific heat capacity is 1.256kJ/ (kg DEG C).In current commercial production, first high-temperature fusion slag is discharged into uncovered slag runner about 10 meters long from the slag-drip opening of high temperature furnace, is then discharged in uncovered granulating pit again and carries out Water Quenching, it is not yet seen the report recycling high temperature smelting furnace slag runner accumulation of heat.The structure of uncovered slag runner is generally: the material directly contacted with slag adopts the graphite casting bed of material high temperature resistant, resistance to chemical attack, peripheral employing refractory brick marshalling.Existing high-temperature fusion slag flows through the mode of production of uncovered slag runner, there is following hidden danger and shortcoming: (1) wastes the hyperthermia radiation heat of slag in a large number；(2) heat of slag runner accumulation is not recycled yet and is wasted；(3) labor condition of production scene worsens, and the easy skin ambustion of hyperthermia radiation thermal capacitance exists potential safety hazard.Therefore, carry out the hyperthermia radiation heat of high temperature smelting furnace slag runner and the recovery of accumulation heat, be that relevant industries are saved energy and reduce the cost and carry out the effective behave kept the safety in production.
Application number be 201310421159.6 application for a patent for invention disclose a kind of bottom blowing composite molten slag runner, including the outer slag runner of cement, the support of ditch body, ditch body and operculum colpi, the bottom of the outer slag runner of cement is provided with ditch body and supports, the top that ditch body supports is provided with ditch body and the operculum colpi that refractory material is made, the inner surface of operculum colpi is provided with accumulation of heat masonry, slag runner is surrounded between ditch body and operculum colpi, it is provided with copper cooling wall bottom ditch body, cooling water pipe is set in copper cooling wall, the bottom of copper cooling wall is provided with bottom blowing air hose, and bottom blowing air hose is provided with injection tube and upwards communicates with slag runner.Although slag runner is designed to close-shaped by this invention, and injection tube is set bottom slag runner, air is sprayed into the slag runner in slag runner, but rational air flow pipe is not designed in this invention in slag runner, after air sprays into slag runner heat exchange, can only discharging from the two ends of slag runner, heat energy recycle is inefficient；It addition, the operculum colpi of this composite molten slag runner is fixedly installed on above ditch body, after completing deslagging, operator can only enter from the two ends of slag runner, overhauls after slag runner is cleared up, very inconvenient, there is also potential safety hazard.
Summary of the invention
The technical problem to be solved is to provide a kind of mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger, the portable top cover of design, by top cover being close on uncovered slag runner, avoid the waste of heat of slags, and by appropriate design air channel, effectively reclaim the high-grade waste heat of high-temperature fusion slag.
Mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger provided by the present invention, it is characterised in that: include slag runner masonry and locomotive；Described slag runner masonry is uncovered, is provided with lower branch air duct in it, and this lower branch air duct connects with the hot-blast outlet being arranged on slag runner masonry；Also there is in described slag runner masonry the circulation passage for slag circulation；Described locomotive includes top cover, and this top cover is provided with branch air duct；When top cover and the described slag runner masonry of described locomotive close up, described top cover cover slag runner masonry uncovered on, described upper branch air duct connects with circulation passage, lower branch air duct respectively.When the top cover of locomotive closes up with slag runner masonry, high temperature furnace starts deslagging, and slag enters in slag runner masonry, locomotive top cover and slag runner masonry accumulate substantial amounts of heat, when high temperature furnace stops deslagging, opening air-introduced machine, air sucks from slag runner two ends, and flow through branch air duct, lower branch air duct, and discharge from hot-blast outlet, in air flow process, the heat of accumulation is discharged by top cover and slag runner masonry, add hot-air and become high-temperature hot-air, reclaim the high-grade waste heat of high-temperature fusion slag；When the heat of top cover and slag runner block body accumulation discharges totally, locomotive leaves slag runner, and whole slag runner is completely unlimited, is available for operator's cleaning or maintenance slag runner.
For ease of the setting of upper branch air duct, being hung with some suspended roof bricks in described top cover, upper branch air duct is opened on suspended roof brick.With polylith suspended roof brick, each suspended roof brick can be chained together by pin rod, hangs gusset hung on top cover by pin rod again through holding, thus being arranged on top cover by suspended roof brick.Owing to each suspended roof brick being all prefabricated with upper branch air duct, each upper branch air duct connects, for simplifying design, upper branch air duct may be designed to T-type structure, the T-shaped horizontal ends of the upper branch air duct on each suspended roof brick is interconnected, when locomotive top cover closes up with slag runner masonry, the T-shaped upper branch air duct being interconnected connects with lower branch air duct.
For improving afterheat of slags recovering effect, it is to avoid heat loss, in top cover, it is filled with heat-preservation cotton.
Owing to design of cover is in the side of locomotive, counterweight can be set on locomotive, it is to avoid locomotive crank.Outer cover of steel plate also can be adopted outside locomotive to be coated with, increase the durability of locomotive.Move for ease of locomotive, can at slag runner masonry side designed path, locomotive moves in orbit, and track end arranges limited block, it is to avoid locomotive drops out track.
Preferably, described slag runner masonry includes the graphite casting bed of material, gitter brick and insulating brick；Described gitter brick is arranged on the outside of the graphite casting bed of material, and described insulating brick is arranged on the outside of gitter brick；Described circulation passage is arranged on the graphite casting bed of material；Described lower branch air duct is opened on gitter brick.
Owing to graphite outside block of the casting bed of material has some gitter bricks, on each gitter brick, prefabricated through hole is as lower branch air duct, for ease of the connection of each lower branch air duct Yu hot-blast outlet, simplifies design, be provided with in slag runner masonry connect with hot-blast outlet collect air channel, this collects air channel and connects with lower branch air duct.
After locomotive top cover and slag runner masonry close up, top cover should and slag runner masonry between keep seal, it is to avoid heat loss, be respectively equipped with labyrinth on the upper edge of slag runner masonry both sides, being provided with airtight and watertight padding in described labyrinth, the opening of this labyrinth is towards locomotive side；Described locomotive top cover is provided with the projection coordinated with described labyrinth；When top cover covers after on slag runner masonry is uncovered, protrude out into labyrinth, and compress in airtight and watertight padding, it is achieved the sealing between locomotive and slag runner masonry.
For improving the durability of slag runner masonry, also can set up outer cover of steel plate outside slag runner masonry, now, labyrinth is arranged on outer cover of steel plate.
The present invention also provides for a kind of high-temperature fusion slag exhaust heat recovering method, it is characterised in that comprise the following steps:
(1) locomotive is moved to slag runner masonry direction, until the top cover of locomotive and described slag runner masonry close up, top cover cover slag runner masonry uncovered on；
(2) high-temperature fusion slag enters the slag circulation passage of slag runner masonry from high temperature furnace slag-drip opening, and slag is in circulation passage flow process, and by radiating, conducting, convection heat transfer' heat-transfer by convection mode heats locomotive top cover, slag runner masonry；
(3) when the slag in high temperature furnace slag-drip opening stopping deslagging, circulation passage flows to end, being sucked from the two ends of slag runner masonry by cold air, cold air is discharged from hot-blast outlet after flowing through branch air duct, lower branch air duct；Air is in flow process, and top cover, slag runner are built the heat of body accumulation and cold air is heated to be high-temperature hot-air；
(4) when the heat of top cover, slag runner block body accumulation discharges totally, open locomotive and leave slag runner.
The present invention is compared with existing actual production situation, hence it is evident that have the advantage that
(1) the hyperthermia radiation heat of high-temperature fusion slag is recycled；
(2) recycle slag runner and build the heat of body accumulation, owing to being closed by slag runner by top cover, heat loss while recycling, can be prevented effectively from；
(3) because whole tapping process is to complete in the slag runner closed, effectively prevent hyperthermia radiation thermal burn skin, significantly improve the labor condition of production scene, keep the safety in production also more secure.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram (when top cover and slag runner close up) of the present invention；
Fig. 2 is the overall structure schematic diagram (when top cover separates with slag runner) of the present invention；
Fig. 3 is the enlarged drawing at I place in Fig. 1.
In figure: 1. top cover, 2. suspended roof brick, 3. pin rod, 4. hold and hang gusset, 5. go up branch air duct, 6. heat-preservation cotton, 7. outer cover of steel plate, 8. limited block, 9. guide rail, 10. counterweight, 11. locomotives, 12. times branch air ducts, 13. gitter brick, 14. inlet scoops, 15. slags, 16. collect air channel, 17. hot-blast outlet, the 18. graphite casting bed of materials, 19. insulating bricks, 20. slag runner masonry, 21. airtight and watertight paddings, 22. labyrinth.
Detailed description of the invention
As shown in Figure 1, 2, 3, the present invention includes locomotive 11, slag runner masonry 20, guide rail 9.Locomotive 11 includes top cover 1, counterweight 10, outer cover of steel plate 7, and owing to top cover 1 is arranged on the side of locomotive 11, counterweight 10 can effectively guarantee locomotive entirety steadily of centre of gravity, and the outer cover of steel plate 7 outside locomotive can strengthen the use durability degree of locomotive.Locomotive 11 is positioned on guide rail 9, moves along guide rail 9, and the end of guide rail 9 is provided with limited block 8, it is prevented that locomotive 11 skids off track.Being hung with some suspended roof bricks 2 in top cover 1, be prefabricated with branch air duct 5 in suspended roof brick 2, upper branch air duct 5 may be designed to T-type structure, and the lower end of T-shaped upper branch air duct is as inlet scoop 14；Each suspended roof brick 2 is serially connected side by side by pin rod 3, then is hung gusset 4 be arranged on top cover by pin rod by holding, thus suspended roof brick 2 is hung on top cover, and the horizontal part connection of the T-shaped upper branch air duct of each suspended roof brick.For avoiding heat loss, in top cover 2, it is filled with heat-preservation cotton 6.Slag runner masonry 20 includes graphite the casting bed of material 18, insulating brick 19, gitter brick 13；The graphite casting bed of material 18 is designed to the U-shape structure circulation passage as slag 15, and outside block of the graphite casting bed of material 18 has gitter brick 13, and outside block of gitter brick 13 has insulating brick 19.Being prefabricated with through hole on gitter brick 19 as lower branch air duct 12, lower branch air duct 12 connects with the hot-blast outlet 17 being arranged on slag runner masonry 20；Owing to gitter brick quantity is more, every piece of gitter brick having lower branch air duct, can arrange and collect air channel 16 in slag runner masonry 20, each lower branch air duct connects with collecting air channel, collects air channel 16 and connects with hot-blast outlet 17.For strengthening seal, the upper edge of the both sides of slag runner masonry 20 is respectively provided with one labyrinth 22, is filled with airtight and watertight padding 21 in labyrinth 22, and the opening of labyrinth 22 points to locomotive 11；Labyrinth 22 may be designed to U-shape structure, and U-shaped opening points to locomotive；Correspondingly, locomotive 11 is provided with projection, and when locomotive closes up with slag runner masonry, the projection on locomotive inserts labyrinth 22, compresses airtight and watertight padding 21.For strengthening the durability degree of slag runner masonry 20, slag runner masonry 20 is outside may also set up outer cover of steel plate, and now, labyrinth is arranged on outer cover of steel plate.
Specific works mode of the present invention is as follows: before each deslagging, first locomotive 11 is shifted to slag runner masonry 20, until the airtight and watertight padding 21 compressed in labyrinth 22, top cover 1 and slag runner masonry 20 close up (see accompanying drawing 1).High-temperature fusion slag starts to discharge from the slag-drip opening of high temperature furnace, directly fall on the graphite casting bed of material 18, in the process flowing through the graphite casting bed of material 18, the suspended roof brick 2 being suspended on top cover 1 is heated by radiant heat transfer mode, the mode adopting conduction and convection heat transfer' heat-transfer by convection heats slag runner masonry 20 so that suspended roof brick 2 and slag runner masonry 20 accumulate substantial amounts of heat gradually.When the slag-drip opening of high temperature furnace stops deslagging, when slag 15 on the graphite casting bed of material 18 flows to end, open air-introduced machine (external device of the present invention), air sucks from slag runner two ends, flow into the inlet scoop 14 of suspended roof brick 2, branch air duct 5 in entrance, then along the horizontal part of T-shaped upper branch air duct respectively to the left, flow to the right, flow into the lower branch air duct 12 of both sides gitter brick 13 still further below, the cold air heat exchange of the heat of accumulation Yu suction is become high-temperature hot-air by suspended roof brick 2 and slag runner masonry 20 simultaneously, and collect in collecting air channel 16, afterheat boiler system is delivered to for output steam through hot-blast outlet 17, or it is used as dry medium, combustion air etc., reclaim the high-grade waste heat of high temperature smelting furnace slag runner.When in suspended roof brick 2 and slag runner masonry 20, the heat of accumulation discharges totally, then opening locomotive 11 and leave slag runner, move on to limited block 8 place along guide rail 9 and stop, whole slag runner opens wide (see accompanying drawing 2) completely, is available for operator's cleaning or maintenance slag runner.
Claims (10)
1. a mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger, it is characterised in that: include slag runner masonry and locomotive；Described slag runner masonry is uncovered, is provided with lower branch air duct in it, and this lower branch air duct connects with the hot-blast outlet being arranged on slag runner masonry；Also there is in described slag runner masonry the circulation passage for slag circulation；Described locomotive includes top cover, and this top cover is provided with branch air duct；When top cover and the described slag runner masonry of described locomotive close up, described top cover cover slag runner masonry uncovered on, described upper branch air duct connects with circulation passage, lower branch air duct respectively.
2. mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger as claimed in claim 1, it is characterised in that: being hung with some suspended roof bricks in described top cover, described upper branch air duct is opened on suspended roof brick.
3. mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger as claimed in claim 2, it is characterised in that: described upper branch air duct is T-shaped, and the T-shaped horizontal ends of the upper branch air duct on each suspended roof brick is interconnected.
4. as claimed in claim 2 or claim 3 mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger, it is characterised in that: by pin rod string together, this pin rod hangs gusset be arranged on described top cover by holding described suspended roof brick.
5. the mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger as described in claim 1,2 or 3, it is characterised in that: it is filled with heat-preservation cotton in described top cover.
6. the mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger as described in claim 1,2 or 3, it is characterised in that: also including track, described locomotive slides in orbit；The end of described track is provided with limited block.
7. mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger as claimed in claim 1, it is characterised in that: described slag runner masonry includes the graphite casting bed of material, gitter brick and insulating brick；Described gitter brick is arranged on the outside of the graphite casting bed of material, and described insulating brick is arranged on the outside of gitter brick；Described circulation passage is arranged on the graphite casting bed of material；Described lower branch air duct is opened on gitter brick.
8. as claimed in claim 7 mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger, it is characterised in that: being provided with in described slag runner masonry and collect air channel with described hot-blast outlet connects, this collects air channel and connects with described lower branch air duct.
9. the mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger as described in claim 1,2,3,7 or 8, it is characterized in that: the upper edge of described slag runner masonry both sides is respectively equipped with labyrinth, being provided with airtight and watertight padding in described labyrinth, the opening of this labyrinth is towards locomotive side；Described locomotive top cover is provided with the projection coordinated with described labyrinth.
10. the regenerative heat exchanger used described in claim 1 carries out exhaust heat recovering method, it is characterised in that comprise the following steps:
(1) locomotive is moved to slag runner masonry direction, until the top cover of locomotive and described slag runner masonry close up, top cover cover slag runner masonry uncovered on；
(2) high-temperature fusion slag enters the slag circulation passage of slag runner masonry from high temperature furnace slag-drip opening, and slag is in circulation passage flow process, and by radiating, conducting, convection heat transfer' heat-transfer by convection mode heats locomotive top cover, slag runner masonry；
(3) when the slag in high temperature furnace slag-drip opening stopping deslagging, circulation passage flows to end, being sucked from the two ends of slag runner masonry by cold air, cold air is discharged from hot-blast outlet after flowing through branch air duct, lower branch air duct；Air is in flow process, and top cover, slag runner are built the heat of body accumulation and cold air is heated to be high-temperature hot-air；
(4) when the heat of top cover, slag runner block body accumulation discharges totally, open locomotive and leave slag runner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510167087.6A CN104748571B (en) | 2015-04-09 | 2015-04-09 | Mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger and exhaust heat recovering method |
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| CN201510167087.6A CN104748571B (en) | 2015-04-09 | 2015-04-09 | Mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger and exhaust heat recovering method |
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| CN104748571A CN104748571A (en) | 2015-07-01 |
| CN104748571B true CN104748571B (en) | 2016-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112984536A (en) * | 2021-03-23 | 2021-06-18 | 华能青岛热电有限公司 | Heat recycling device for boiler slag removal tank |
| CN114774603B (en) * | 2022-04-29 | 2024-01-30 | 马鞍山钢铁股份有限公司 | Recycling system of high-temperature radiant heat of blast furnace tapping channel |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4426067A (en) * | 1983-01-07 | 1984-01-17 | The Calumite Company | Metallic sectional liquid-cooled runners |
| JP2000319712A (en) * | 1999-04-30 | 2000-11-21 | Nippon Steel Corp | Water-cooled slag runner |
| CN101886149A (en) * | 2010-07-08 | 2010-11-17 | 无锡市东方环境工程设计研究所有限公司 | High temperature liquid slag recovery method |
| CN103060495B (en) * | 2013-01-18 | 2014-12-17 | 北京科技大学 | Spiral vibrating bed waste heat recovery device in melted blast furnace slag granulation process |
| CN103952502A (en) * | 2013-11-08 | 2014-07-30 | 西南科技大学 | Molten slag waste heat recovery device |
| CN204535438U (en) * | 2015-04-09 | 2015-08-05 | 南京圣诺热管有限公司 | Mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger |
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