CN110186287A - A kind of high temperature sludge residual-heat utilization method and system - Google Patents
A kind of high temperature sludge residual-heat utilization method and system Download PDFInfo
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- CN110186287A CN110186287A CN201910459146.5A CN201910459146A CN110186287A CN 110186287 A CN110186287 A CN 110186287A CN 201910459146 A CN201910459146 A CN 201910459146A CN 110186287 A CN110186287 A CN 110186287A
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- temperature sludge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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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
Abstract
The invention discloses a kind of high temperature sludge residual-heat utilization method and systems, this method utilization rate of waste heat is high, device structure is simple and reliable, technology controlling and process is simple and convenient, and certain high temperature sludges are compensated for, such as magnesium metal reduction slag, calcium metal reducing slag, poor thermal conductivity lead to the deficiency of UTILIZATION OF VESIDUAL HEAT IN difficulty.High temperature sludge residual-heat utilization method, the sensible heat carried using working medium extraction high temperature sludge, the waste heat being extracted into of going forward side by side is delivered to be utilized with heat unit, the high temperature sludge is insoluble or poorly soluble in working medium or extraction thermal medium, and the method for the sensible heat that the working medium extraction high temperature sludge carries is direx process or indirect extraction.High temperature sludge afterheat utilizing system, including high temperature sludge storehouse, the hot storehouse of extraction, sedimentation basin, working medium storage pool；The connection of high temperature sludge orlop portion extracts hot storehouse, and the high-pressure working medium import in the hot storehouse of extraction connects working medium storage pool, and the hot storehouse bottom slag discharge of extraction connects sedimentation basin, and the sedimentation basin connects working medium storage pool.
Description
Technical field
The present invention relates to a kind of high temperature sludge residual-heat utilization method and systems, belong to chemical residual heat utilization technology field.
Background technique
The metallurgy, the energy such as heat power plant boiler, blast furnace, ferrosilicon process reducing metal magnesium, aluminothermic process reducing metal calcium
High temperature sludge, the reducing slag etc. of industry discharge, maximum temperature carries a large amount of sensible heat up to 1600 DEG C, if not to the waste heat
It is improper to be recycled or recycle, and will cause the profligacy of the energy.By taking the magnesium of ferrosilicon process reducing metal as an example, every production
1 ton of magnesium metal about generates 5.5 tons of reduction magnesium slags, about 1200 DEG C of temperature or so when reduction magnesium slag leaves reductive jar.Jiangxi science and engineering
University's Chen Jin Puritanism, which is awarded etc., to be calculated, then 1200 ~ 25 DEG C of this temperature ranges, and the specific heat capacity of reduction magnesium slag is a 871J/kg* DEG C of left side
It is right, that is, to restore magnesium slag caused by every 1 ton of magnesium metal of production, be cooled to 25 DEG C from 1200 DEG C, the sensible heat discharged is equivalent to combustion
Burn the heat that about 192.5kg mark coal is discharged.The current magnesium-smelting silicothermic process in China is produced per year by 900,000 tons of calculating, reduction magnesium slag waste heat benefit
It is calculated with the rate of recovery by 60%, the waste heat of recycling is equivalent to about the heat of 10.5 ten thousand tons of mark coal combustion release, reduces simultaneously
The discharge of the harmful substances such as carbon dioxide, sulfur dioxide, dust had not only had huge economic value, but also had very big society
And the value of environmental protection.
The industry of processing in to(for) reduction magnesium slag at present, one is lag cooler is passed through, using cooling water to the reduction magnesium of heat
Slag carries out spraying cooling, while generating a small amount of hot water and vapor.Its shortcoming is that lag cooler belongs to semi-open campaign-styled system
System, it is difficult to realize the sealing of system, the collection of hot water separation, vapor is difficult to realize, and use value is not high.Another kind is
By waste heat boiler, the disadvantage is that the equipment is static heat transfer, heat transfer efficiency is low, processing capacity is limited.The third is that shell and tube changes
Hot device is made to restore the top-down whereabouts of magnesium slag using gravity, passes through tubular heat exchanger, heating heat exchanger in dropping process
In working-medium water, the disadvantage is that since the thermal conductivity of reduction magnesium slag is poor, when tubulation spacing is larger, thermally conductive journey is big, heat utilization efficiency
It is low, and when tubulation spacing is smaller, the poor fluidity of slag is easy " choking ", and in addition high temperature reduction slag has certain caking property, long
After time operation, it is easy to appear stain pipe but is difficult to clear up.
For thermal power plant high temperature sludge, processing mode common at present is followed one is by the cooling slag of recirculated cooling water
Ring water brings slag waste heat into cooling tower and is discharged into atmosphere, although solving the problems, such as slag rapid cooling, slag heat could not be effective
It utilizes, influences boiler thermal efficiency, and fighting for mastery for recirculated water also results in the waste of water resource to a certain extent, while to environment
Also result in thermal pollution.Be for second using fluidized bed slag cooler, by fluidizing agent (air or low-temperature flue gas) to high temperature sludge into
After row is cooling, low temperature slag is discharged into slag removing system, and heated fluidizing agent carries a small amount of fine grained and sends burner hearth back to by backwind tube.
Blast furnace cinder is liquid at high temperature, during discharging sensible heat, is gradually cooled down, it may occur that phase transformation, solidification, if
Heat recovery is directly carried out by heat exchanger, can solidify, be adhered on heat exchanger, so first often through being granulated in advance to obtain
Solid granulates or thin slice are carrying out waste heat recycling.The typical process of smelting iron blast furnace dross sensible heat recycling has, Chinese Academy of Sciences's process
Logical wait of engineering research institute Xu Yong describes in " Development of Heat Recovery From Blast Furnace Slag Using Dry Granulation Methods " text: cooler drum method is molten
Slag flake curing process, continuous casting and rolling method slag tabular curing process, mechanical mixing method granulating slag melts technique, rotating cylinder
Method slag granulating technique, Merotec slag granulating technique, wind crush method blast furnace cinder Exposure degree technique, rotating cup granulated slag
Several typical blast furnace cinder Exposure degree techniques such as Exposure degree technology, there is respective deficiency.Such as waste heat recycling system
Complicated, complex process control difficulty of system etc..Using high-temperature slag granulation process, return make a part from liquid to solid sensible heat with
Phase transformation heat leakage.
Summary of the invention
The present invention overcomes above-mentioned the deficiencies in the prior art, provides a kind of high temperature sludge residual-heat utilization method and system, we
Method and system waste heat utilization rate are high, device structure is simple and reliable, technology controlling and process is simple and convenient, and compensate for certain high temperature sludges,
Such as magnesium metal reduction slag, calcium metal reducing slag, poor thermal conductivity lead to the deficiency of UTILIZATION OF VESIDUAL HEAT IN difficulty.
The present invention is implemented with the following technical solutions:
A kind of high temperature sludge residual-heat utilization method, the sensible heat carried using working medium extraction high temperature sludge, the waste heat conveying being extracted into of going forward side by side
Extremely utilized with heat unit, comprising the following steps:
1) high temperature sludge come out from high temperature sludge storehouse is cooling at the beginning of feeding cinder notch cooling jacket；
2) enter the hot storehouse of extraction by just cooling high temperature sludge, mixed with the working medium or extraction thermal medium extracted in hot storehouse, high temperature sludge and work
Heat exchange occurs for matter or extraction thermal medium, and the heat that working medium or extraction thermal medium absorb is delivered to be utilized with heat unit, high temperature sludge
Cooling becomes low temperature slag, and the working medium or extraction thermal medium are recycled；
3) the low temperature slag after heat exchange carries out two-stage with working medium or multi stage precipitation separates, and low temperature slag discharge, working medium enters working medium storage
Slot, then be pumped into the hot storehouse of extraction and carry out extracting hot use next time；
4) working medium is first preheated before entering the hot storehouse of extraction, and the preheating passes through the first order after step 3) heat exchange and the
The working medium that the second-order separation generates is realized.
The high temperature sludge is insoluble or poorly soluble in working medium or extraction thermal medium, and contact with slag of working medium or extraction thermal medium not shadow
Ring the subsequent use of slag, it is easy to accomplish the separation of extraction thermal medium or working medium and slag.
The method for the sensible heat that the working medium extraction high temperature sludge carries is direx process or indirect extraction.
The direx process is that working medium is directly contacted with high temperature sludge, and the heat in extraction high temperature sludge to equalized temperature is real
Now the waste heat of high temperature sludge is recycled, process of the process route including but not limited to following progress: working medium mix with high temperature sludge extract it is hot,
Working medium is separated with slag, working medium circulation, slag are discharged, working medium preheating.
The indirect extraction is to be contacted by working medium with high temperature sludge, extracts sensible heat entrained by high temperature sludge, recycles high temperature
Working medium preheats extraction thermal medium, realizes the waste heat recycling of high temperature sludge；Process route including but not limited to next coming in order into
Capable process:
Working medium and the mixing extraction heat of high temperature sludge, the heat exchange by hot working fluid and medium, extraction thermal medium circulation, extraction thermal medium and working medium
Separation, slag discharge, working medium preheating, extraction thermal medium preheating.
The extraction thermal medium is water.
A kind of high temperature sludge afterheat utilizing system, including high temperature sludge storehouse, the hot storehouse of extraction, sedimentation basin, working medium storage pool；The high temperature
Cinder notch is fed in the setting of slag orlop portion, the slag inlet fed cinder notch connection and extract hot storehouse, the top the extraction Re Cang setting high-pressure working medium into
Mouthful, the high-pressure working medium import connects working medium storage pool, and slag-drip opening, the slag-drip opening connection precipitating is arranged in the hot orlop portion of extraction
Pond, the sedimentation basin connect working medium storage pool；The slag-drip opening is provided with slag-discharging device；
The high temperature sludge storehouse is formed by refractory material laying, described to feed setting hello slag device in cinder notch, and the cinder notch outer wall of feeding is set
It is equipped with cooling jacket, recirculated cooling water is set in cooling jacket；
The extraction thermal medium or working medium of high temperature sludge waste heat, extraction thermal medium or work after the recovery waste heat are provided in the hot storehouse of extraction
Matter, which is led to, uses heat unit；
The sedimentation basin is one or more levels sedimentation basin, and the precipitating bottom of pond portion is provided with cold slag outlet, and overflow port is arranged in top,
The overflow port connects working medium storage pool；
Working medium storage pool top be arranged connect by working medium output channel with high-pressure pump the high-pressure working medium for extracting hot storehouse into
Mouthful, the working medium storage pool is additionally provided with working medium supplement pipeline.
Preferably, the hot storehouse of the extraction include top slag inlet, the main heat exchanger positioned at slag inlet lower part, high-pressure working medium into
Mouthful, extraction thermal region and bottom slag discharge positioned at lower part, the main heat exchanger includes circulating water intake and circulating water outlet, described
Circulating water intake connects cooling water outlet, the circulating water outlet connection heat unit, and the top the extraction Re Cang setting one is arrived more
A high-pressure working medium import, the high-pressure working medium import are set to main heat exchanger top；Cooling water is arranged in the cooling jacket lower part
Cooling water outlet is arranged in import, top, and the cooling water inlet connects water tank by high-pressure hydraulic pump；The heat with heat unit
Water inlet connects circulating water outlet, and cooling water outlet connects water tank, and the water tank is additionally provided with water supply pipe.
Preferably, the hot storehouse of the extraction include top slag inlet, superposed vapor region, steam (vapor) outlet, slag trap and
Slag inlet is arranged in extraction thermal region positioned at lower part, the hot the top of the warehouse of extraction, and the slag inlet is provided with slag feed pipe, the hot storehouse of extraction
Top be arranged steam (vapor) outlet, extract the top Re Cang Steam area in be arranged slag trap, the slag trap be located at slag feed pipe outlet and
Between steam (vapor) outlet, the top extraction Re Cang is arranged one or more high-pressure working medium imports, the high-pressure working medium import be set into
Slag pipe exports top, and the high-pressure working medium import is provided with high-pressure nozzle, and the slag-drip opening in the hot orlop portion of extraction is provided with deslagging
Device；The hot import with heat unit connects steam (vapor) outlet, and cold outlet connects working medium storage pool.
Compared with prior art, the beneficial effects of the present invention are:
The present invention carries out high temperature sludge UTILIZATION OF VESIDUAL HEAT IN using extraction thermal method, and the extraction thermal method, which refers to, extracts what high temperature sludge carried using working medium
Sensible heat, the waste heat being extracted into of going forward side by side are delivered to the method utilized with heat unit, the extraction heat refer to using working medium or other
The operation that medium extracts the heat of high temperature sludge.The present invention contacts extraction with the direct of high temperature sludge by working medium or extraction thermal medium
Wherein entrained sensible heat is taken, one solves the problems, such as that the pre- heat recovery efficiency due to caused by slag poor thermal conductivity is low；Furthermore
Solve the problems, such as that high-temperature slag granulation leads to phase transformation heat waster, is not granulated and can not effectively recycle heat.Improve high temperature sludge institute
Carry the recycling efficiency of sensible heat.
Detailed description of the invention
Fig. 1 is directly to extract thermal method process route chart.
Fig. 2 is directly to extract thermal method waste heat recycling system structural schematic diagram.
Fig. 3 is to extract thermal method process route chart indirectly.
Fig. 4 is to extract thermal method waste heat recycling system structural schematic diagram indirectly.
In figure, high temperature sludge storehouse 1 feeds cinder notch 2, the hot storehouse 3 of extraction, first stage precipitation tank 4, working medium storage pool 5, feeds slag device 6, slag inlet
7, steam (vapor) outlet 8, high-pressure working medium import 9, slag-drip opening 10, with heat unit 11, cold sender property outlet 12, working medium storage pool 13, deslagging
Device 14, second-level settling pond 15, vapor region 16, slag trap 17, extraction thermal region 18, slag feed pipe 19, cold slag outlet 22, working medium output
Pipeline 23, high-pressure pump 24, working medium supplement pipeline 25, filter device 26, temperature measuring equipment 27, heat exchanger 28, cooling jacket 29, cooling
Water inlet 291, cooling water outlet 292, pressure sensor 31, pressure relief safety valve 32, high-pressure hydraulic pump 40, water tank 41, main heat exchange
Device 42, circulating water intake 421, circulating water outlet 422, water supply pipe 44, working medium 50, slag 52.
Specific embodiment
The present invention will be further described with attached drawing with reference to embodiments:
So-called extraction thermal method is directly contacted with high temperature sludge by extraction thermal medium or working medium, after extracting sensible heat entrained by high temperature sludge,
Extraction thermal medium or working medium are separated with slag after cooling, are entered by heated extraction thermal medium heating working medium or directly heated working medium
Use heat unit.
1. a kind of high temperature sludge residual-heat utilization method of the present invention, the sensible heat carried using working medium extraction high temperature sludge, extraction of going forward side by side
To waste heat be delivered to and utilized with heat unit, comprising the following steps:
1) high temperature sludge come out from high temperature sludge storehouse is cooling at the beginning of feeding cinder notch cooling jacket；
2) enter the hot storehouse of extraction by just cooling high temperature sludge, mixed with the working medium or extraction thermal medium extracted in hot storehouse, high temperature sludge and work
Heat exchange occurs for matter or extraction thermal medium, and the heat that working medium or extraction thermal medium absorb is delivered to be utilized with heat unit, high temperature sludge
Cooling becomes low temperature slag, and the working medium or extraction thermal medium are recycled；
3) the low temperature slag after heat exchange carries out two-stage with working medium or multi stage precipitation separates, and low temperature slag discharge, working medium enters working medium storage
Slot, then be pumped into the hot storehouse of extraction and carry out extracting hot use next time；
4) working medium is first preheated before entering the hot storehouse of extraction, and the preheating passes through the first order after step 3) heat exchange and the
The working medium that the second-order separation generates is realized.
The high temperature sludge is insoluble or poorly soluble in working medium or extraction thermal medium, and contact with slag of working medium or extraction thermal medium not shadow
Ring the subsequent use of slag, it is easy to accomplish the separation of extraction thermal medium or working medium and slag.
The method for the sensible heat that the working medium extraction high temperature sludge carries is direx process or indirect extraction.
The direx process is that working medium is directly contacted with high temperature sludge, the heat in extraction high temperature sludge to equalized temperature, two
After the separation of person, heated working medium is entered by duplex matter system with heat unit heat supply.It realizes and the waste heat of high temperature sludge is recycled,
Process route is including but not limited to following process: working medium is separated with high temperature sludge mixing extraction heat, working medium with slag, working medium circulation, slag are arranged
Out, working medium preheats.
The indirect extraction is to be contacted by working medium with high temperature sludge, extracts sensible heat entrained by high temperature sludge, recycles high temperature
Working medium preheats extraction thermal medium, and heated extraction thermal medium is entered by duplex matter system with heat unit heat supply.It realizes
The waste heat of high temperature sludge recycles；Process route is including but not limited to next coming in order process:
Working medium and the mixing extraction heat of high temperature sludge, the heat exchange by hot working fluid and medium, extraction thermal medium circulation, extraction thermal medium and working medium
Separation, slag discharge, working medium preheating, extraction thermal medium preheating.
The extraction thermal medium is water.
2. a kind of high temperature sludge afterheat utilizing system, including high temperature sludge storehouse, the hot storehouse of extraction, sedimentation basin, working medium storage pool；The height
Cinder notch is fed in the setting of warm slag orlop portion, and the slag inlet fed cinder notch connection and extract hot storehouse, high-pressure working medium is arranged in the top extraction Re Cang
Import, the high-pressure working medium import connect working medium storage pool, and slag-drip opening is arranged in the hot orlop portion of extraction, and the slag-drip opening connection is heavy
Shallow lake pond, the sedimentation basin connect working medium storage pool；The slag-drip opening is provided with slag-discharging device；
The high temperature sludge storehouse is formed by refractory material laying, described to feed setting hello slag device in cinder notch, and the cinder notch outer wall of feeding is set
It is equipped with cooling jacket, recirculated cooling water is set in cooling jacket；
The extraction thermal medium or working medium of high temperature sludge waste heat, extraction thermal medium or work after the recovery waste heat are provided in the hot storehouse of extraction
Matter, which is led to, uses heat unit；
The sedimentation basin is one or more levels sedimentation basin, and the precipitating bottom of pond portion is provided with cold slag outlet, and overflow port is arranged in top,
The overflow port connects working medium storage pool；
Working medium storage pool top be arranged connect by working medium output channel with high-pressure pump the high-pressure working medium for extracting hot storehouse into
Mouthful, the working medium storage pool is additionally provided with working medium supplement pipeline.
3. indirectly in the high temperature sludge waste heat recycling system of extraction heat,
A kind of high temperature sludge afterheat utilizing system, including high temperature sludge storehouse 1, the hot storehouse 3 of extraction, sedimentation basin, working medium storage pool 5；
High temperature sludge orlop portion, which is arranged, feeds cinder notch 2, the slag inlet 7 fed the connection of cinder notch 2 and extract hot storehouse, described to extract on hot storehouse 3
High-pressure working medium import 9 is arranged in portion, and the high-pressure working medium import 9 connects working medium storage pool 5, and deslagging is arranged in hot 3 bottom of storehouse of extraction
Mouth 10, the slag-drip opening 10 connect sedimentation basin, and the sedimentation basin connects working medium storage pool 5；
The high temperature sludge storehouse 1 is formed by refractory material laying, and hello slag device 6 is arranged in described feed in cinder notch 2, described to feed outside cinder notch 2
Wall is provided with cooling jacket 29, and recirculated cooling water is arranged in cooling jacket, and cooling water inlet is arranged in 29 lower part of cooling jacket
291, cooling water outlet 292 is arranged in top, and the cooling water inlet 291 connects water tank 41 by high-pressure hydraulic pump 40；
The hot storehouse 3 of the extraction include top slag inlet 7, positioned at 7 lower part of slag inlet main heat exchanger 42, high-pressure working medium import 9, be located at
The extraction thermal region 18 and bottom slag discharge 10 of lower part, the main heat exchanger 42 include circulating water intake 421 and circulating water outlet
422, the circulating water intake 421 connects cooling water outlet 292, the connection of circulating water outlet 422 heat unit 11, the extraction
One or more high-pressure working medium imports 9 are arranged in hot 3 top of storehouse, and the high-pressure working medium import 9 is set to 42 top of main heat exchanger；It is described
Slag-drip opening 10 is provided with slag-discharging device 14；Slag-discharging device is connect with hot storehouse lower tapping hole is extracted, and while being used for deslagging, and may be implemented
Extract the sealing pressure maintaining in hot storehouse.
5 top of the working medium storage pool setting connects the hot storehouse 3 of extraction by working medium output channel 23 and high-pressure pump 24
High-pressure working medium import 9, the working medium storage pool 5 are additionally provided with working medium supplement pipeline 25；
Working medium storage pool effect is: 1) supplement working medium storage, 2) reflux working medium storage, 3) by sedimentation basin separation it is clear
Clear working medium recycling storage, 4) high-pressure pump and the storehouse pumping line Xiang Cuire offer cold conditions working medium are provided.
Be additionally provided with filter device 26 in the working medium output channel 23, prevent a small amount of impurity in working medium storage pool 13 into
Enter high-pressure pump, result in blockage or damage, to influence going on smoothly for production.
It is described to use heat unit 11 for steam turbine, heating radiator.
The hot water inlet with heat unit 11 connects circulating water outlet 422, and cooling water outlet connects water tank 41, the storage
Water tank is additionally provided with water supply pipe 44.
Pressure sensor 31 and pressure relief safety valve 32 are additionally provided at the top of the hot storehouse 3 of extraction.
The sedimentation basin is one or more levels sedimentation basin, and the precipitating bottom of pond portion is provided with cold slag outlet, and top setting is overflow
Head piece, the overflow port connect working medium storage pool；
When 3.1 sedimentation basins are concatenated multifeed clarifier, effect is to make the mixing from the slag that hot storehouse is discharged and working medium is extracted
Object carries out precipitation and separation.The precipitating bottom of pond portion is provided with cold slag outlet 22；The connection of first stage precipitation tank 4 extracts hot storehouse slag-drip opening 10,
Overflow port is set at the top of the first stage precipitation tank 4, and the overflow port connects second-level settling pond 15, sets at the top of the second-level settling pond
Overflow port connection next stage sedimentation basin is set, afterbody sedimentation basin overflow port connects working medium storage pool 13；
Heat exchanger 18 is additionally provided in the first stage precipitation tank, the heat exchanger 28 connects the pipeline of cooling water inlet 291, and right
Cooling water carries out the pre-heat treatment.
High temperature sludge is stored in high temperature sludge storehouse by transport, enters the hot storehouse of extraction by feeding slag device, and drop to working medium 50 in storehouse
Liquid level increases its temperature hereinafter, discharging heat to working medium 50.Reducing slag after heat release sinks to slag notch position below the hot storehouse of extraction
It sets, realizes the first separation of slag and working medium, lower section first stage precipitation tank is entered by slag tapping equipment, carries out the secondary of slag 52 and working medium 50
Separation；The working medium of primary sedimentation separation overflow port above first stage precipitation tank enters second-level settling pond and carries out slag and working medium three times
Separation ... flows back to the hot storehouse of extraction by working medium output channel 23 and high-pressure pump 24 and continues to participate in extraction heat until clarification working medium pond.
Medium water in water tank is by high-pressure hydraulic pump, after the preheating such as preheating heat exchanger, water jacket, into the hot storehouse of extraction
Main heat exchanger, through extraction heat after working medium heating, become the hot water or vapor for reaching working condition, entered by circulating line
With heat unit heat supply.The extraction thermal medium water that cooling or condensation obtains after heat supply, flows back into water tank by pipeline.
When 3.2 sedimentation basins are first stage precipitation tank,
The sedimentation basin is first stage precipitation tank, and the connection of first stage precipitation tank 4 extracts hot storehouse slag-drip opening 10, the first stage precipitation tank 4
Bottom is provided with cold slag outlet 22, and overflow port is arranged in top, and the overflow port connects working medium storage pool 13；
Heat exchanger 18 is additionally provided in the sedimentation basin, the heat exchanger 28 connects the pipeline of cooling water inlet 291, and to cooling
Water carries out the pre-heat treatment.
4. in the high temperature sludge waste heat recycling system of directly extraction heat,
A kind of high temperature sludge afterheat utilizing system, including high temperature sludge storehouse 1, the hot storehouse 3 of extraction, sedimentation basin, working medium storage pool 5；
High temperature sludge orlop portion, which is arranged, feeds cinder notch 2, the slag inlet 7 fed the connection of cinder notch 2 and extract hot storehouse, described to extract on hot storehouse 3
High-pressure working medium import 9 is arranged in portion, and the high-pressure working medium import 9 connects working medium storage pool 5, and deslagging is arranged in hot 3 bottom of storehouse of extraction
Mouth 10, the slag-drip opening 10 connect sedimentation basin, and the sedimentation basin connects working medium storage pool 5；
The high temperature sludge storehouse 1 is formed by refractory material laying, is neither failed due to the high temperature of slag in storehouse, and can prevent in storehouse
The loss of sensible heat entrained by high temperature sludge.Its role is to store the high temperature sludge come from the transport of slag source, ensure whole system work
Sustainability.
Described to feed setting hello slag device 6 in cinder notch 2,2 outer wall of cinder notch of feeding is provided with cooling jacket 29, sets in cooling jacket
Set recirculated cooling water；Slag device is fed to connect with the extraction top Re Cang slag inlet, for ensure in slag storehouse high temperature sludge persistently, evenly into
Extract hot storehouse, meanwhile, and may be implemented to extract the sealing in hot storehouse, prevent from extracting the leakage that steam is generated in hot storehouse.
The hot storehouse 3 of extraction includes top slag inlet 7, superposed vapor region 16, steam (vapor) outlet 8,17 and of slag trap
The equal working regions of extraction thermal region 18 and component positioned at lower part, are working medium and high temperature sludge carries out extraction thermal response and generates the ground of steam
Side.The slag inlet 7 is provided with slag feed pipe 19, and hot 3 top of storehouse of extraction is arranged steam (vapor) outlet 8, extracts the steam dome on the top Re Cang
Slag trap 17 is set in domain, and the slag trap 17 is located between the outlet and steam (vapor) outlet of slag feed pipe 19, and slag trap is to slag inlet
The winged slag that fugitive dust generates plays barrier effect, to purify steam, prevents steam zone slag.The top the extraction Re Cang setting one is arrived more
A high-pressure working medium import, the high-pressure working medium import are set to the outlet top of slag feed pipe 19, and the high-pressure working medium import 9 is arranged
There is high-pressure nozzle, the slag-drip opening 10 of hot 3 bottom of storehouse of extraction is provided with slag-discharging device 14；Slag-discharging device and the hot storehouse lower tapping hole of extraction connect
It connects, while being used for deslagging, and may be implemented to extract the sealing pressure maintaining in hot storehouse.
It is described to use heat unit 11 for steam turbine, heating radiator.The hot import connection steam of heat unit 11 goes out
Mouthful, cold outlet connects working medium storage pool 13.
13 top of the working medium storage pool setting connects the hot storehouse 3 of extraction by working medium output channel 23 and high-pressure pump 24
High-pressure working medium import 20, the working medium storage pool 13 are additionally provided with working medium supplement pipeline 25.
Hello the cinder notch and slag inlet outer wall are additionally provided with cooling jacket 29, and recirculated cooling water is arranged in cooling jacket.
The slag trap 17 is single-layer or multi-layer mesh structure, and when using multilayered structure, each interlayer is using dislocation pore structure.
Pressure sensor 31 and pressure relief safety valve 32 are additionally provided at the top of the hot storehouse 3 of extraction.
The sedimentation basin is one or more levels sedimentation basin, and the precipitating bottom of pond portion is provided with cold slag outlet, and top setting is overflow
Head piece, the overflow port connect working medium storage pool 13；
When 4.1 sedimentation basins are concatenated multifeed clarifier,
The precipitating bottom of pond portion is provided with cold slag outlet 22；The connection of first stage precipitation tank 4 extracts hot storehouse slag-drip opening 10, the level-one precipitating
Overflow port is set at the top of pond 4, and the overflow port connects second-level settling pond 15, and setting overflow port connects at the top of the second-level settling pond
Next stage sedimentation basin, afterbody sedimentation basin overflow port connect working medium storage pool 13；
Temperature measuring equipment 27 is also set up in the first stage precipitation tank and working medium storage pool.
Heat exchanger 28 is additionally provided in the first stage precipitation tank, the heat exchanger connects working medium output channel, and to working medium
The pre-heat treatment is carried out, to further increase high temperature sludge sensible heat utilization efficiency.
The process route of high temperature sludge: high temperature reduction slag is stored in high temperature sludge storehouse after transport, passes through feeding below slag storehouse
Slag device, which is sent into, to be extracted hot storehouse and drops to liquid level in storehouse hereinafter, carrying out heat exchange with working medium in storehouse, and working medium is made to be heated and gasify to be formed
Refrigerant vapor.Slag after heat release is deposited to slag notch position below the hot storehouse of extraction by gravity in working medium, realizes slag and working medium
First separation, by slag tapping equipment enter lower section first stage precipitation tank, carry out slag and working medium secondary separation.Primary sedimentation separation
Working medium overflow port above first stage precipitation tank enters second-level settling pond and carries out separating three times for slag and working medium ... until clarification work
Matter storage pool.
The process route of working medium: clarification working medium storage pool is collected simultaneously reflux working medium, precipitating recycling working medium after steam condensation
And the working medium for replenishment system loss.Working medium in clarification working medium storage pool is pumped into the hot storehouse of extraction by high-pressure pump, leads to
It crosses spray system supplement and extracts in hot storehouse the working medium because of gasification and deslagging consumption, while spray drop is carried out to the fugitive dust of slag inlet
Dirt；Entered by steam (vapor) outlet and steam line with heat unit by thermal evaporation refrigerant vapor, passes through return pipe after exothermic condensation
Road flows back into clarification working medium storage pool.
When 4.2 sedimentation basins are first stage precipitation tank,
The first stage precipitation tank connection extracts hot storehouse slag-drip opening 10, and the first stage precipitation tank bottom is provided with cold slag outlet 22, top
Overflow port is set, and the overflow port connects working medium storage pool 13；
Temperature measuring equipment 27 is also set up in the first stage precipitation tank and working medium storage pool.
Heat exchanger 28 is additionally provided in the first stage precipitation tank, the heat exchanger connects working medium output channel, and to working medium
The pre-heat treatment is carried out, to further increase high temperature sludge sensible heat utilization efficiency.
This system be applicable in but be not limited to thermal reduction prepare magnesium, calcium, sodium, in iron and other industrial processes powdery or
The recycling of sensible heat entrained by the high temperature waste residue such as microgranular clinker, reducing slag can improve efficiency of energy utilization and subtract
Few thermal pollution, reduces the discharge of the exhaust gas such as carbon dioxide, sulfur dioxide indirectly, has good society and economy value and environment
Value.
The basic principles, main features and advantages of the present invention have been shown and described above, description more has
Body is in detail, and but it cannot be understood as limitations on the scope of the patent of the present invention.It should be pointed out that for this field
For those of ordinary skill, without departing from the inventive concept of the premise, various modifications and improvements can be made, these all belong to
In protection scope of the present invention.
Claims (9)
1. a kind of high temperature sludge residual-heat utilization method, which is characterized in that the sensible heat carried using working medium extraction high temperature sludge, extraction of going forward side by side
To waste heat be delivered to and utilized with heat unit, comprising the following steps:
1) high temperature sludge come out from high temperature sludge storehouse is cooling at the beginning of feeding cinder notch cooling jacket；
2) enter the hot storehouse of extraction by just cooling high temperature sludge, mixed with the working medium or extraction thermal medium extracted in hot storehouse, high temperature sludge and work
Heat exchange occurs for matter or extraction thermal medium, and the heat that working medium or extraction thermal medium absorb is delivered to be utilized with heat unit, high temperature sludge
Cooling becomes low temperature slag, and the working medium or extraction thermal medium are recycled；
3) the low temperature slag after heat exchange carries out two-stage with working medium or multi stage precipitation separates, and low temperature slag discharge, working medium enters working medium storage
Slot, then be pumped into the hot storehouse of extraction and carry out extracting hot use next time；
4) working medium is first preheated before entering the hot storehouse of extraction, and the preheating passes through the first order after step 3) heat exchange and the
The working medium that the second-order separation generates is realized.
2. a kind of high temperature sludge residual-heat utilization method according to claim 1, which is characterized in that the high temperature sludge is insoluble or micro-
It is dissolved in working medium or extraction thermal medium, and the contact of working medium or extraction thermal medium with slag does not influence the subsequent use of slag, it is easy to accomplish extraction
The separation of thermal medium or working medium and slag.
3. a kind of high temperature sludge residual-heat utilization method according to claim 1, which is characterized in that the working medium extracts high temperature sludge
The method of the sensible heat of carrying is direx process or indirect extraction.
4. a kind of high temperature sludge residual-heat utilization method according to claim 3, which is characterized in that the direx process is work
Upright connect contacts with high temperature sludge, extracts the heat in high temperature sludge to equalized temperature, realizes the waste heat recycling to high temperature sludge, technique road
Process of the line including but not limited to following progress: working medium is separated with high temperature sludge mixing extraction heat, working medium with slag, working medium circulation, slag are arranged
Out, working medium preheats.
5. a kind of high temperature sludge residual-heat utilization method according to claim 3, which is characterized in that the indirect extraction is logical
It crosses working medium to contact with high temperature sludge, extracts sensible heat entrained by high temperature sludge, high temperature refrigerant is recycled to preheat extraction thermal medium, it is real
The waste heat recycling of existing high temperature sludge；The process that process route is carried out including but not limited to next coming in order:
Working medium and the mixing extraction heat of high temperature sludge, the heat exchange by hot working fluid and medium, extraction thermal medium circulation, extraction thermal medium and working medium
Separation, slag discharge, working medium preheating, extraction thermal medium preheating.
6. a kind of high temperature sludge residual-heat utilization method according to claim 1 or 5, which is characterized in that the extraction thermal medium is
Water.
7. a kind of high temperature sludge afterheat utilizing system, which is characterized in that including high temperature sludge storehouse, the hot storehouse of extraction, sedimentation basin, working medium storage
Pond；Cinder notch, the slag inlet fed cinder notch connection and extract hot storehouse, the top the extraction Re Cang setting are fed in the setting of high temperature sludge orlop portion
High-pressure working medium import, the high-pressure working medium import connect working medium storage pool, and slag-drip opening, the deslagging is arranged in the hot orlop portion of extraction
Mouth connection sedimentation basin, the sedimentation basin connect working medium storage pool；The slag-drip opening is provided with slag-discharging device；
The high temperature sludge storehouse is formed by refractory material laying, described to feed setting hello slag device in cinder notch, and the cinder notch outer wall of feeding is set
It is equipped with cooling jacket, recirculated cooling water is set in cooling jacket；
The extraction thermal medium or working medium of high temperature sludge waste heat, extraction thermal medium or work after the recovery waste heat are provided in the hot storehouse of extraction
Matter, which is led to, uses heat unit；
The sedimentation basin is one or more levels sedimentation basin, and the precipitating bottom of pond portion is provided with cold slag outlet, and overflow port is arranged in top,
The overflow port connects working medium storage pool；
Working medium storage pool top be arranged connect by working medium output channel with high-pressure pump the high-pressure working medium for extracting hot storehouse into
Mouthful, the working medium storage pool is additionally provided with working medium supplement pipeline.
8. a kind of high temperature sludge afterheat utilizing system according to claim 7, which is characterized in that the hot storehouse of extraction includes top
Slag inlet, the main heat exchanger positioned at slag inlet lower part, high-pressure working medium import, extraction thermal region and bottom slag discharge positioned at lower part,
The main heat exchanger includes circulating water intake and circulating water outlet, and the circulating water intake connects cooling water outlet, the circulation
One or more high-pressure working medium imports are arranged in water out connection heat unit, the top extraction Re Cang, and the high-pressure working medium import is set
It is placed in main heat exchanger top；Cooling water inlet is arranged in the cooling jacket lower part, and cooling water outlet, the cooling water is arranged in top
Import connects water tank by high-pressure hydraulic pump；The hot water inlet with heat unit connects circulating water outlet, cooling water outlet connection
Water tank, the water tank are additionally provided with water supply pipe.
9. a kind of high temperature sludge afterheat utilizing system according to claim 7, which is characterized in that the hot storehouse of extraction includes top
Slag inlet, superposed vapor region, steam (vapor) outlet, slag trap and the extraction thermal region positioned at lower part, the hot the top of the warehouse of extraction
Slag inlet is set, and the slag inlet is provided with slag feed pipe, and steam (vapor) outlet is arranged in the top extraction Re Cang, extracts the steam on the top Re Cang
Slag trap is set in region, and the slag trap is located between slag feed pipe outlet and steam (vapor) outlet, the top the extraction Re Cang setting one
To multiple high-pressure working medium imports, the high-pressure working medium import is set to slag feed pipe outlet top, the high-pressure working medium import setting
There is high-pressure nozzle, the slag-drip opening in the hot orlop portion of extraction is provided with slag-discharging device；The hot import connection steam of heat unit goes out
Mouthful, cold outlet connects working medium storage pool.
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