CN104748571A - Mobile top cover type high-temperature molten slag trough heat accumulated type heat exchanger and waste heat recovery method - Google Patents
Mobile top cover type high-temperature molten slag trough heat accumulated type heat exchanger and waste heat recovery method Download PDFInfo
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- CN104748571A CN104748571A CN201510167087.6A CN201510167087A CN104748571A CN 104748571 A CN104748571 A CN 104748571A CN 201510167087 A CN201510167087 A CN 201510167087A CN 104748571 A CN104748571 A CN 104748571A
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- slag runner
- top cover
- slag
- masonry
- branch air
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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 invention discloses a mobile top cover type high-temperature molten slag trough heat accumulated type heat exchanger and a waste heat recovery method. The mobile top cover type high-temperature molten slag trough heat accumulated type heat exchanger comprises a slag trough brickwork and a mobile trolley; the slag trough brickwork is open, a lower branch air passage is arranged therein, and the lower branch air passage is communicated with a hot air outlet in the slag trough brickwork; a slag flow passage is arranged in the slag trough brickwork; the mobile trolley comprises a top cover, and the top cover is provided with an upper branch air passage; when the top cover of the mobile trolley is combined with the slag trough brickwork, the top cover covers the opening of the slag trough brickwork, and the upper branch air passage is respectively communicated with the flow passage and lower branch air passage. When discharging slag, the mobile top cover type high-temperature molten slag trough heat accumulated type heat exchanger is located at closed state, the skin burn due to high-temperature radiation is effectively avoided, the working conditions of the production site are obviously improved, and the safety production is better guaranteed; in the closed slab trough, the slag trough brickwork and top cover accumulate heat to recycle the high-grade waste heat of the high-temperature molten 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 byproduct 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.As the accessory substance that blast furnace slag is blast furnace ironmaking, its temperature of discharging from blast furnace is at 1450 ~ 1650 DEG C, and heat content is about 1870MJ/t; The melting phosphorus slag that yellow phosphorus electric furnace is discharged is generally at about 1400 DEG C, and its heat content is 1887.83kJ/kg, specific heat capacity is 1.256kJ/ (kg DEG C).In current industrial production, first high-temperature fusion slag is discharged into the uncovered slag runner of about 10 meters long from the slag-drip opening of high temperature furnace, and then is discharged in uncovered granulating pit and carries out Water Quenching, it is not yet seen the report recycling the accumulation of heat of high temperature smelting furnace slag runner.The structure of uncovered slag runner is generally: the material directly contacted with slag adopts graphite that is high temperature resistant, resistance to chemical attack to cast the bed of material, peripherally adopts 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) working condition of production scene worsens, and the easy skin ambustion of hyperthermia radiation thermal capacitance, exists potential safety hazard.Therefore, carrying out the hyperthermia radiation heat of high temperature smelting furnace slag runner and the recovery of accumulation heat, is that relevant industries are saved energy and reduce the cost and carry out effective behave of keeping 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, comprise 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 the ditch body and operculum colpi that refractory material makes, the inner surface of operculum colpi is provided with accumulation of heat masonry, slag runner is surrounded between ditch body and operculum colpi, copper cooling wall is provided with bottom ditch body, cooling water pipe is established 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 circulation pipeline is not designed in this invention in slag runner, air sprays into slag runner and after heat exchange, can only discharge from the two ends of slag runner, heat energy recycle efficiency is not high; In addition, the operculum colpi of this composite molten slag runner is fixedly installed on above ditch body, and after completing deslagging, operator can only enter from the two ends of slag runner, clears up rear maintenance to slag runner, very inconvenient, also there is potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger, design portable top cover, 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, is characterized in that: comprise 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 is communicated with the hot-blast outlet be arranged on slag runner masonry; Also there is in described slag runner masonry the circulation passage for slag circulation; Described locomotive comprises top cover, and this top cover is provided with branch air duct; When the top cover of described locomotive and described slag runner masonry close up, described top cover cover slag runner masonry uncovered on, described upper branch air duct is communicated with circulation passage, lower branch air duct respectively.When the top cover of locomotive and slag runner masonry close up, high temperature furnace starts deslagging, and slag enters in slag runner masonry, locomotive top cover and slag runner masonry accumulate a large amount of heats, when high temperature furnace stops deslagging, open 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, top cover and slag runner masonry are by the thermal release of accumulation out, add hot-air and become high-temperature hot-air, reclaim the high-grade waste heat of high-temperature fusion slag; When top cover and slag runner build the thermal release of body accumulation totally, locomotive leaves slag runner, and whole slag runner is completely unlimited, can for operator's cleaning or maintenance slag runner.
For ease of the setting of upper branch air duct, be hung with some suspended roof bricks in described top cover, upper branch air duct is opened on suspended roof brick.Owing to there being polylith suspended roof brick, each suspended roof brick is chained together by pin rod, then hangs gusset hung on top cover by pin rod by holding, thus is arranged on top cover by suspended roof brick.Due to each suspended roof brick being all prefabricated with upper branch air duct, each upper branch air duct is communicated with, for simplified design, upper branch air duct can 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 and slag runner masonry close up, the T-shaped upper branch air duct be interconnected is communicated with lower branch air duct.
For improving afterheat of slags recovering effect, avoiding heat loss, in top cover, being filled with heat-preservation cotton.
Because design of cover is in the side of locomotive, counterweight can be set on locomotive, avoid locomotive crank.Locomotive outside also can adopt outer cover of steel plate coated, increases 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, avoids locomotive to drop out track.
Preferably, described slag runner masonry comprises graphite the 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.
Build due to graphite casting bed of material outside and have some gitter bricks, on each gitter brick, prefabricated through hole is as lower branch air duct, for ease of being communicated with of each lower branch air duct and hot-blast outlet, and simplified design, be provided with in slag runner masonry be communicated with hot-blast outlet gather air channel, this gathers air channel and is communicated with lower branch air duct.
After locomotive top cover and slag runner masonry close up, top cover should and slag runner masonry between keep sealing, avoid heat loss, be respectively equipped with labyrinth on the upper edge of slag runner masonry both sides, be 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, projection enters labyrinth, and on press seal filler, realizes the sealing between locomotive and slag runner masonry.
For improving the durability of slag runner masonry, outer cover of steel plate also can be set up in slag runner masonry outside, now, is arranged on outer cover of steel plate by labyrinth.
The present invention also provides a kind of high-temperature fusion slag exhaust heat recovering method, it is characterized in that, comprises 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, in circulation passage flow process, heats locomotive top cover, slag runner masonry by radiation, conduction, convection heat transfer' heat-transfer by convection mode;
(3) when high temperature furnace slag-drip opening stops the slag in deslagging, circulation passage to flow to end, sucked at the two ends of cold air from slag runner masonry, cold air is discharged from hot-blast outlet after flowing through branch air duct, lower branch air duct; Air is in flow process, and cold air is heated to be high-temperature hot-air by the heat that top cover, slag runner build body accumulation;
(4) when top cover, slag runner build the thermal release of body accumulation totally, open locomotive and leave slag runner.
The present invention is compared with existing actual production situation, and obvious tool has the following advantages:
(1) the hyperthermia radiation heat of high-temperature fusion slag is recycled;
(2) recycle the heat that slag runner builds body accumulation, owing to being closed by slag runner by top cover, while recycling, effectively can avoid heat loss;
(3) because whole tapping process completes in the slag runner closed, effectively prevent hyperthermia radiation thermal burn skin, significantly improve the working condition of production scene, keep the safety in production also more secure.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention (when top cover and slag runner close up);
Fig. 2 is 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 bricks, 14. inlet scoops, 15. slags, 16. gather air channel, 17. hot-blast outlets, the 18. graphite casting bed of materials, 19. insulating bricks, 20. slag runner masonries, 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 comprises top cover 1, counterweight 10, outer cover of steel plate 7, and because top cover 1 is arranged on the side of locomotive 11, counterweight 10 effectively can guarantee the overall steadily of centre of gravity of locomotive, 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, prevents locomotive 11 from skidding off track.Be 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 can 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 hangs gusset 4 be arranged on top cover by pin rod by holding, thus hangs on top cover by suspended roof brick 2, and the horizontal part of the T-shaped upper branch air duct of each suspended roof brick is communicated with.For avoiding heat loss, in top cover 2, be filled with heat-preservation cotton 6.Slag runner masonry 20 comprises graphite the casting bed of material 18, insulating brick 19, gitter brick 13; The graphite casting bed of material 18 is designed to the circulation passage of U-shaped structure as slag 15, and the outside of the graphite casting bed of material 18 is built gitter brick 13, and the outside of gitter brick 13 is built insulating brick 19.Gitter brick 19 is prefabricated with through hole as lower branch air duct 12, lower branch air duct 12 is communicated with the hot-blast outlet 17 be arranged on slag runner masonry 20; Because gitter brick quantity is more, every block gitter brick has lower branch air duct, can arrange in slag runner masonry 20 and gather air channel 16, each lower branch air duct with gather air channel and be communicated with, gather air channel 16 and be communicated 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 can be designed to U-shaped structure, and U-shaped opening points to locomotive; Correspondingly, locomotive 11 is provided with projection, and when locomotive and slag runner masonry close up, the projection on locomotive inserts labyrinth 22, press seal filler 21.For strengthening the durability degree of slag runner masonry 20, slag runner masonry 20 outside also can arrange 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 compress the airtight and watertight padding 21 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 drop 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 be suspended on top cover 1 is heated by radiant heat transfer mode, adopt the mode of conduction and convection heat transfer to heat slag runner masonry 20, make suspended roof brick 2 and slag runner masonry 20 accumulate a large amount of heats 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, enter branch air duct 5, then the horizontal part along T-shaped upper branch air duct is distinguished left, flow to the right, flow into the lower branch air duct 12 of both sides gitter brick 13 downwards, the cold air heat exchange of the heat of accumulation and suction is become high-temperature hot-air by suspended roof brick 2 and slag runner masonry 20 simultaneously, and collect gathering in air channel 16, afterheat boiler system is delivered to for output steam through hot-blast outlet 17, or be used as drying 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 accumulation thermal release totally, then open locomotive 11 leave slag runner, along guide rail 9 move on to limited block 8 place stop, whole slag runner completely open wide (see accompanying drawing 2), can for operator cleaning or maintenance slag runner.
Claims (10)
1. a mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger, is characterized in that: comprise 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 is communicated with the hot-blast outlet be arranged on slag runner masonry; Also there is in described slag runner masonry the circulation passage for slag circulation; Described locomotive comprises top cover, and this top cover is provided with branch air duct; When the top cover of described locomotive and described slag runner masonry close up, described top cover cover slag runner masonry uncovered on, described upper branch air duct is communicated 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 characterized in that: be 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 characterized in that: described upper branch air duct is T-shaped, the T-shaped horizontal ends of the upper branch air duct on each suspended roof brick is interconnected.
4. mobile top cap type high temperature smelting furnace slag runner regenerative heat exchanger as claimed in claim 2 or claim 3, is characterized 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, is characterized in that: be 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 characterized in that: also comprise 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, is characterized in that: described slag runner masonry comprises graphite the 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. move top cap type high temperature smelting furnace slag runner regenerative heat exchanger as claimed in claim 7, it is characterized in that: be provided with in described slag runner masonry be communicated with described hot-blast outlet gather air channel, this gathers air channel and is communicated 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, be 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. use the regenerative heat exchanger described in claim 1 to carry out an exhaust heat recovering method, it is characterized 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, in circulation passage flow process, heats locomotive top cover, slag runner masonry by radiation, conduction, convection heat transfer' heat-transfer by convection mode;
(3) when high temperature furnace slag-drip opening stops the slag in deslagging, circulation passage to flow to end, sucked at the two ends of cold air from slag runner masonry, cold air is discharged from hot-blast outlet after flowing through branch air duct, lower branch air duct; Air is in flow process, and cold air is heated to be high-temperature hot-air by the heat that top cover, slag runner build body accumulation;
(4) when top cover, slag runner build the thermal release of body accumulation totally, open locomotive and leave slag runner.
Priority Applications (1)
| 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 true CN104748571A (en) | 2015-07-01 |
| CN104748571B CN104748571B (en) | 2016-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114774603A (en) * | 2022-04-29 | 2022-07-22 | 马鞍山钢铁股份有限公司 | Recycling system for high-temperature radiant heat of blast furnace tapping channel |
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| GB2133517A (en) * | 1983-01-07 | 1984-07-25 | Calumite Co | A runner for a blast furnace |
| 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 |
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| 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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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2133517A (en) * | 1983-01-07 | 1984-07-25 | Calumite Co | A runner for a blast furnace |
| 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114774603A (en) * | 2022-04-29 | 2022-07-22 | 马鞍山钢铁股份有限公司 | Recycling system for high-temperature radiant heat of blast furnace tapping channel |
| 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 |
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| CN104748571B (en) | 2016-06-29 |
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