CN108611453A - A kind of device and method of recycling high-temperature slag heat - Google Patents

A kind of device and method of recycling high-temperature slag heat Download PDF

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Publication number
CN108611453A
CN108611453A CN201810382128.7A CN201810382128A CN108611453A CN 108611453 A CN108611453 A CN 108611453A CN 201810382128 A CN201810382128 A CN 201810382128A CN 108611453 A CN108611453 A CN 108611453A
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CN
China
Prior art keywords
heat
slag
lead
pool
temperature
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.)
Pending
Application number
CN201810382128.7A
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Chinese (zh)
Inventor
陆建宁
杨桂兰
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NANJING HUADIAN ENERGY-SAVING AND ENVIRONMENTAL PROTECTION EQUIPMENT Co Ltd
Original Assignee
NANJING HUADIAN ENERGY-SAVING AND ENVIRONMENTAL PROTECTION EQUIPMENT Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NANJING HUADIAN ENERGY-SAVING AND ENVIRONMENTAL PROTECTION EQUIPMENT Co Ltd filed Critical NANJING HUADIAN ENERGY-SAVING AND ENVIRONMENTAL PROTECTION EQUIPMENT Co Ltd
Priority to CN201810382128.7A priority Critical patent/CN108611453A/en
Publication of CN108611453A publication Critical patent/CN108611453A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B3/00General features in the manufacture of pig-iron
    • C21B3/04Recovery of by-products, e.g. slag
    • C21B3/06Treatment of liquid slag
    • C21B3/08Cooling slag
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004Systems for reclaiming waste heat
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The present invention provides a kind of device of recycling high-temperature slag heat, and device is used to recycle the heat of the slag flowed out in high-temperature smelting pot, and device includes slag conveying device, slag conveying device for the slag flowed out in high-temperature smelting pot to be transported to molten slag bath;The slag is transported in the lead pool being connected with molten slag bath by molten slag bath for accommodating the slag flowed out out of high-temperature smelting pot;Lead pool bottom is provided with heat-transfer pipe, and thermal resistance agent is used to heat-transfer pipe and lead pool being connected as an entirety, and heat transfer medium is provided in heat-transfer pipe;Solid slag liquid conveying device through lead pool solid slag after cooling for that will transfer out;It is provided with protection device of air above molten slag bath, lead pool, heat-exchanger rig is connected with the heat-transfer pipe that lead pool bottom is arranged, for heat transfer medium to be transported in heat-exchanger rig.A kind of device of recycling high-temperature slag heat of the present invention can realize the quick absorption of the residual temperature of high-temperature slag, and will not cause environmental pollution, simple in structure at low cost.

Description

A kind of device and method of recycling high-temperature slag heat
Technical field
The present invention relates to high-temperature slag fields, in particular to a kind of device of recycling high-temperature slag heat.
Background technology
There are many high-temperature slags in engineering, if the blast furnace of steel and iron industry will produce slag, one ton of iron of refining about produces Raw 300kg blast furnace slags, tapping temperature are up to 1400 DEG C or so, are calculated according to avergae specific heat 1.05KJ/ (kgK), then blast furnace slag The sensible heat taken away is up to about 2.7 × 108GJ, and it is about 9,200,000 tons to be converted into standard coal.Bath of glass is also molten in Improving Glass Manufacturing Processes Melt state.
Therefore, high-temperature slag is very good heat source.The sensible heat for how preferably recycling high-temperature slag saves industry Energy emission reduction improves energy utilization rate, is a most important problem.
Currently, home and abroad carries out cooling processing still based on water quenching to slag, and water quenching technique has used largely Cooling water, there are 1.5 tons to be evaporated in about 10 tons of water, cause water resource waste to a certain extent.The high temperature of slag Sensible heat does not recycle, and wastes.
For the Exposure degree of blast furnace slag, Europe and Japan and other countries have more early carried out relevant research, with strongest influence power Be dry granulation methods.Dry granulation methods can contact with clinker to avoid water and generate the pollution environmental gas such as sulfide, together Shi Jieyue water resources.Slag granulating should be become tiny solid-state slag particle first, then the sensible heat effect of recycling high temperature slag particle More preferably.But cost in this way is higher.
The method of slag dry granulation includes following several:
(1) wind quenching method:Using high-speed air impact grinding by slag and recycle sensible heat method heat.Mitsubishi develops heavy industry Wind quenching law technology and device are worked out at first with Japanese state-run KK (being now JFE), and total heat recovery rate is up to 81.3%.But work Skill is complex.
(2) revolving cup method:It is atomized slag rotating cup and air blast by the effect of combination, and it is glassy to cool down drop generation rapidly Product, and it is fluidized a recuperation of heat twice in succession.
(3) non-dry granulation exhaust heat recovering method:It is based on generating in being chemically reacted using absorption heat of slags Research in terms of fuel.
Invention content
Present invention aims at a kind of quick absorptions for the residual temperature that can realize high-temperature slag of offer, and will not cause environment Pollution, the device of recycling high-temperature slag heat at low cost simple in structure.
In order to realize this purpose, the present invention provides a kind of devices of recycling high-temperature slag heat, and described device is for recycling The heat of the slag flowed out in high-temperature smelting pot, described device include that slag conveying device, molten slag bath, lead pool, solid slag are defeated Device, protection device of air, heat-exchanger rig are sent, wherein:
The slag conveying device is used to the slag flowed out in high-temperature smelting pot being transported to molten slag bath;
The slag is transported to the lead being connected with molten slag bath by molten slag bath for accommodating the slag flowed out out of high-temperature smelting pot In liquid pool;
Lead liquid is provided in lead pool, lead pool bottom is provided with heat-transfer pipe, wherein between the heat-transfer pipe and lead pool It is provided with thermal resistance agent, the thermal resistance agent is used to heat-transfer pipe and lead pool being connected as an entirety, is provided in the heat-transfer pipe Heat transfer medium;
Solid slag liquid conveying device through lead pool solid slag after cooling for that will transfer out;
Protection device of air is provided with above the molten slag bath, lead pool, the protection device of air is used for molten slag bath and lead Liquid pool conveying protection gas, for preventing slag from being contacted with air;
Heat-exchanger rig is connected with the heat-transfer pipe that lead pool bottom is arranged, for heat transfer medium to be transported to heat-exchanger rig It is interior.
Further, height of the height for one side pool side that aforementioned molten slag bath is connect with lead pool less than the another side of molten slag bath Degree, and the pool side height on described one side being connect with lead pool is equal to the pond height of lead pool.
Further, previous heat transfer medium is delivered to heat-exchanger rig by pump.
Further, previous heat transfer medium is conduction oil.
Further, aforementioned protective gas is inert gas.
Further, the proportion of aforementioned lead liquid is 11.2.
Further, the proportion of aforementioned slag is 0.4-1.2.
The present invention also provides a kind of methods of recycling high-temperature slag heat to be included the following steps using above-mentioned apparatus:
(1) high temperature slag liquid is delivered to by slag conveying device in molten slag bath, then is delivered in lead pool;
(2) in lead pool, the temperature of high temperature slag liquid is for 1400 DEG C or more and proportion 7.8 hereinafter, and the fusing point of lead liquid 328 DEG C, 1740 DEG C of boiling point and proportion are 0.4-1.2;In lead pool, lead liquid and the layering of high temperature slag liquid, lead liquid level is in lower layer, height Warm slag liquid is located at upper layer, and high temperature slag liquid transfers heat to lead liquid;
(3) lead liquid transfers heat to thermal resistance agent, and thermal resistance agent transfers heat to the heat transfer medium in heat-transfer pipe, and heat transfer is situated between Matter transfers heat to heat exchange in heat-exchanger rig;
(4) solid slag conveying device will be transferred out through lead pool solid slag after cooling.
Optionally, protection device of air is passed through to molten slag bath, lead pool protects the time of gas molten to be delivered in high temperature slag liquid Before slag bath and lead pool.
By the above technology contents it is found that the present invention recycling high-temperature slag heat device, due to molten slag bath and lead pool company The height of one side pool side connect is less than the height of the another side of molten slag bath, and the pool side height on described one side being connect with lead pool It is high equal to the pond of lead pool, so the slag in molten slag bath can be automatically flowed into lead pool, improve production efficiency.
Since the proportion of lead liquid is 11.2, the proportion of slag is 0.4-1.2, so slag and lead liquid will not in lead pool Automatic mixing, can realize layering, so slag can be detached quickly with lead liquid.
Due to heat transfer medium by pump be delivered to heat-exchanger rig, when heat transfer medium is after absorbing enough heats, pump The heat transfer medium in lead night bottom of pond portion is transported to cooling in heat-exchanger rig, heat transfer medium after cooling goes successively to lead pool absorption Heat so recycles, just the heat transfer of high temperature melting slag liquid is come out, realizes the purpose of cooling.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived that describe in greater detail below are at this Sample design it is not conflicting in the case of can be viewed as the disclosure subject matter a part.In addition, required guarantor All combinations of the theme of shield are considered as a part for the subject matter of the disclosure.
Can be more fully appreciated from the following description in conjunction with attached drawing present invention teach that foregoing and other aspect, reality Apply example and feature.The feature and/or advantageous effect of other additional aspects such as illustrative embodiments of the present invention will be below Description in it is obvious, or by according to present invention teach that specific implementation mode practice in learn.
Description of the drawings
Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or approximately uniform group each of is shown in each figure It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled. Now, by example and the embodiments of various aspects of the invention will be described in reference to the drawings, wherein:
Fig. 1 is the structural schematic diagram of the device of the recycling high-temperature slag heat of the present invention.
Specific implementation mode
In order to know more about the technology contents of the present invention, spy lifts specific embodiment and institute's accompanying drawings is coordinated to be described as follows.
Various aspects with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations. It is not intended to cover all aspects of the invention for embodiment of the disclosure.It should be appreciated that a variety of designs and reality presented hereinbefore Those of apply example, and describe in more detail below design and embodiment can in many ways in any one come it is real It applies, this is because design disclosed in this invention and embodiment are not limited to any embodiment.In addition, disclosed by the invention one A little aspects can be used alone, or otherwise any appropriately combined be used with disclosed by the invention.
As shown in Figure 1, a kind of device of recycling high-temperature slag heat, described device are used to recycle the molten of the interior outflow of high-temperature smelting pot The heat of slag 3, described device include slag conveying device 1, molten slag bath 2, lead pool 6, solid slag conveying device 8, protection gas Device 9, heat-exchanger rig, wherein:The slag conveying device 1 is used to the slag 3 flowed out in high-temperature smelting pot being transported to molten slag bath 2。
The slag 3 is transported to and is connected with molten slag bath 2 for accommodating the slag 3 flowed out out of high-temperature smelting pot by molten slag bath 2 Lead pool 6 in.The height for one side pool side that molten slag bath 2 is connect with lead pool 6 is less than the height of the another side of molten slag bath 2, and The pond that the pool side height on described one side being connect with lead pool 6 is equal to lead pool 6 is high.It is not required to using the molten slag bath 2 of this structure Additionally to apply driving force can be delivered to the slag 3 in molten slag pond in lead pool 6, save energy.
Lead liquid 7 is provided in lead pool 6,6 bottom of lead pool is provided with heat-transfer pipe 4, wherein the heat-transfer pipe 4 and lead liquid Thermal resistance agent 5 is provided between pond 6, the thermal resistance agent 5 is used to heat-transfer pipe 4 and lead pool 6 being connected as an entirety, the heat transfer It is provided with heat transfer medium in pipe 4.Heat transfer medium is conduction oil.
Heat transfer medium is delivered to heat-exchanger rig by pump.In use, when the heat transfer medium positioned at 6 bottom of lead pool When absorbing enough heats, which is transported in heat-exchanger rig and exports the heat in heat transfer medium by pump;Work as biography After the heat of thermal medium is released, which is delivered to the heat that absorption slag 3 is continued in 6 bottom of lead pool by pump.
Since the proportion of lead liquid 7 is 11.2, the proportion of slag 3 is 0.4-1.2.So slag 3 is located at the solid of lead liquid 7 Slag liquid conveying device through 6 solid slag 3 after cooling of lead pool for that will transfer out.
The molten slag bath 2,6 top of lead pool are provided with protection device of air 9, and the protection device of air 9 is used for molten slag bath 2 Protection gas is conveyed with lead pool 6, for preventing slag 3 from being contacted with air.Protective gas is inert gas.
Heat-exchanger rig is connected with the heat-transfer pipe 4 that 6 bottom of lead pool is arranged, for heat transfer medium to be transported to heat-exchanger rig It is interior.
The operation principle of the device of the recycling high-temperature slag heat of the present invention is as follows:The pyrosol exported in high-temperature smelting pot is logical It crosses slag conveying device 1 to be input in molten slag bath 2, since the height for the pool side being connected with lead pool 6 in molten slag bath 2 is less than close The height of slag conveying device 1, so the slag 3 in 3 stove of slag is automatically entered into lead pool 6, due to the lead in lead pool 6 The proportion of liquid 7 is higher than the proportion of slag 3, so slag 3 is located at the top of lead liquid 7, since the bottom of lead pool 6 is provided with heat transfer The temperature of absorption so heat transfer medium absorbs the temperature of the slag 3 in lead pool 6, and is transmitted to heat exchange dress by medium by pump In setting, after heat-exchanger rig absorbs the heat in heat transfer medium, heat transfer medium is transferred to by pump in lead pool 6, in lead pool 6 The slag 3 of solidification is exported by solid slag conveying device 8.
By the above technology contents it is found that the present invention recycling high-temperature slag heat device, due to molten slag bath 2 and lead pool 6 The height of one side pool side of connection is less than the height of the another side of molten slag bath 2, and the pool side on described one side being connect with lead pool 6 The pond that height is equal to lead pool 6 is high, so the slag 3 in molten slag bath 2 can be automatically flowed into lead pool 6, improves life Produce efficiency.
Since the proportion of lead liquid 7 is 11.2, the proportion of slag 3 is 0.4-1.2, so slag 3 and lead liquid in lead pool 6 7 will not mix automatically, can realize layering, so slag 3 can be detached quickly with lead liquid 7.
Due to heat transfer medium by pump be delivered to heat-exchanger rig, when heat transfer medium is after absorbing enough heats, pump The heat transfer medium in lead night bottom of pond portion is transported to cooling in heat-exchanger rig, heat transfer medium after cooling goes successively to the suction of lead pool 6 Heat is received, so recycles, just the heat transfer of 3 liquid of high-temperature slag is come out, realizes the purpose of cooling.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause This, the scope of protection of the present invention is defined by those of the claims.

Claims (8)

1. a kind of device of recycling high-temperature slag heat, described device are used to recycle the heat of the slag flowed out in high-temperature smelting pot, Be characterized in that, described device include slag conveying device, molten slag bath, lead pool, solid slag conveying device, protection device of air, Heat-exchanger rig, wherein:
The slag conveying device is used to the slag flowed out in high-temperature smelting pot being transported to molten slag bath;
The slag is transported to the lead pool being connected with molten slag bath by molten slag bath for accommodating the slag flowed out out of high-temperature smelting pot It is interior;
Lead liquid is provided in lead pool, lead pool bottom is provided with heat-transfer pipe, wherein being arranged between the heat-transfer pipe and lead pool There are thermal resistance agent, the thermal resistance agent to be used to heat-transfer pipe and lead pool being connected as an entirety, heat transfer is provided in the heat-transfer pipe Medium;
Solid slag liquid conveying device through lead pool solid slag after cooling for that will transfer out;
Protection device of air is provided with above the molten slag bath, lead pool, the protection device of air is used for molten slag bath and lead pool Conveying protection gas;
Heat-exchanger rig is connected with the heat-transfer pipe that lead pool bottom is arranged, for heat transfer medium to be transported in heat-exchanger rig.
2. the device of recycling high-temperature slag heat according to claim 1, which is characterized in that the molten slag bath connects with lead pool The height of one side pool side connect is less than the height of the another side of molten slag bath, and the pool side height on described one side being connect with lead pool It is high equal to the pond of lead pool.
3. the device of recycling high-temperature slag heat according to claim 1, which is characterized in that the heat transfer medium is defeated by pumping It send to heat-exchanger rig.
4. the device of recycling high-temperature slag heat according to claim 1, which is characterized in that the heat transfer medium is heat conduction Oil.
5. the device of recycling high-temperature slag heat according to claim 1, which is characterized in that the protective gas is indifferent gas Body.
6. the device of recycling high-temperature slag heat according to claim 1, which is characterized in that the proportion of the lead liquid is 11.2。
7. the device of recycling high-temperature slag heat according to claim 1, which is characterized in that the proportion of the slag is 0.4- 1.2。
8. a kind of method of recycling high-temperature slag heat, it is characterised in that:Using claim 1 to 7 any one of them device, Include the following steps:
(1) high temperature slag liquid is delivered to by slag conveying device in molten slag bath, then is delivered in lead pool;
(2) in lead pool, the temperature of high temperature slag liquid is for 1400 DEG C or more and proportion 7.8 hereinafter, and the fusing point 328 of lead liquid DEG C, 1740 DEG C of boiling point and proportion be 0.4-1.2;In lead pool, lead liquid and the layering of high temperature slag liquid, lead liquid level is in lower layer, high temperature Slag liquid is located at upper layer, and high temperature slag liquid transfers heat to lead liquid;
(3) lead liquid transfers heat to thermal resistance agent, and thermal resistance agent transfers heat to the heat transfer medium in heat-transfer pipe, and heat transfer medium will It exchanges heat in heat transfer to heat-exchanger rig;
(4) solid slag conveying device will be transferred out through lead pool solid slag after cooling.
CN201810382128.7A 2018-04-26 2018-04-26 A kind of device and method of recycling high-temperature slag heat Pending CN108611453A (en)

Priority Applications (1)

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CN201810382128.7A CN108611453A (en) 2018-04-26 2018-04-26 A kind of device and method of recycling high-temperature slag heat

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Application Number Priority Date Filing Date Title
CN201810382128.7A CN108611453A (en) 2018-04-26 2018-04-26 A kind of device and method of recycling high-temperature slag heat

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111549189A (en) * 2020-05-07 2020-08-18 南京华电节能环保设备有限公司 High-efficiency recycling device for waste heat of high-temperature molten slag

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB417286A (en) * 1932-11-25 1934-10-02 George Kenneth Williams Improvements in and connected with the refining of lead
KR20090036352A (en) * 2007-10-09 2009-04-14 재단법인 포항산업과학연구원 Apparatus for recycling heat of slag
CN104962670A (en) * 2015-07-14 2015-10-07 中冶南方工程技术有限公司 Method for recovering waste heat of melting slag
CN105463139A (en) * 2015-11-13 2016-04-06 中能京蓝(北京)环保工程有限公司 Recovery method and device for sensible heat of fusion slag
CN105907905A (en) * 2016-06-22 2016-08-31 中冶东方工程技术有限公司 Molten slag waste heat recycling device
CN208201018U (en) * 2018-04-26 2018-12-07 南京华电节能环保设备有限公司 A kind of device recycling high-temperature slag heat

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB417286A (en) * 1932-11-25 1934-10-02 George Kenneth Williams Improvements in and connected with the refining of lead
KR20090036352A (en) * 2007-10-09 2009-04-14 재단법인 포항산업과학연구원 Apparatus for recycling heat of slag
CN104962670A (en) * 2015-07-14 2015-10-07 中冶南方工程技术有限公司 Method for recovering waste heat of melting slag
CN105463139A (en) * 2015-11-13 2016-04-06 中能京蓝(北京)环保工程有限公司 Recovery method and device for sensible heat of fusion slag
CN105907905A (en) * 2016-06-22 2016-08-31 中冶东方工程技术有限公司 Molten slag waste heat recycling device
CN208201018U (en) * 2018-04-26 2018-12-07 南京华电节能环保设备有限公司 A kind of device recycling high-temperature slag heat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111549189A (en) * 2020-05-07 2020-08-18 南京华电节能环保设备有限公司 High-efficiency recycling device for waste heat of high-temperature molten slag
CN111549189B (en) * 2020-05-07 2022-03-04 南京华电节能环保股份有限公司 High-efficiency recycling device for waste heat of high-temperature molten slag

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