CN203642724U - Pyrite concentrate acid manufacturing workshop section molten slag waste heat utilization system - Google Patents
Pyrite concentrate acid manufacturing workshop section molten slag waste heat utilization system Download PDFInfo
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- CN203642724U CN203642724U CN201320887767.1U CN201320887767U CN203642724U CN 203642724 U CN203642724 U CN 203642724U CN 201320887767 U CN201320887767 U CN 201320887767U CN 203642724 U CN203642724 U CN 203642724U
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- Prior art keywords
- waste heat
- hot
- air
- slag
- molten slag
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- 239000002893 slag Substances 0.000 title claims abstract description 57
- 239000002918 waste heat Substances 0.000 title claims abstract description 20
- 239000012141 concentrate Substances 0.000 title claims abstract description 15
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052683 pyrite Inorganic materials 0.000 title claims abstract description 15
- 239000011028 pyrite Substances 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 239000002253 acid Substances 0.000 title abstract description 3
- 238000007602 hot air drying Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 16
- 238000012216 screening Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model discloses a pyrite concentrate acid manufacturing workshop section molten slag waste heat utilization system, and belongs to the technical field of sulfuric acid production. The system comprises a hot air drying device 1, a screening device 2, a fluidized bed roaster 3, a waste heat boiler 4, a roasting furnace fan 5, a dust removal device 6, a dust removal fan 7, a slag collecting device 9, a cooling and humidifying roller 10 and a hot air fan 11. The hot air drying device 1, the screening device 2, the fluidized bed roaster 3 and the waste heat boiler 4 are connected in sequence, and the roasting furnace fan 5 is arranged at an air inlet of the fluidized bed roaster 3. The slag collecting device 9 is arranged between the fluidized bed roaster 3 and the cooling and humidifying roller 10, and the slag collecting device 9, the hot air fan 11, the hot air drying device 1, the dust removal device 6 and the dust removal fan 7 are connected through pipelines in sequence to form a hot air channel. The waste heat of molten slag is utilized by the system, and energy consumption is reduced.
Description
Technical field
The utility model belongs to gas washing in SA production technical field, particularly a kind of pyrite concentrate relieving haperacidity workshop section molten slag bootstrap system.
Background technology
Sulfuric acid is as a kind of common raw material of industry, and it has all brought into play great function in every field.In chemical fertilizer production field, as can be used a large amount of sulfuric acid in composite fertilizer's production process, manufacturer of composite fertilizer can adopt sulphur ore deposit self-control sulfuric acid.Sulphur ore deposit produces sulfuric acid and mainly adopts oxidizing process first to obtain sulfur dioxide, and sulfur dioxide, water and oxygen reaction obtain sulfuric acid.Conventionally adopt fluidizing reactor and air reaction to obtain sulfur dioxide at sulphur ore deposit oxidation operation.In prior art, need to be equipped with a hot-blast stove tcrude ore is dried entering fluidized bed roasting stokehold, the outdoor raw ore moisture content of storing up is down to 6% by 14%, be convenient to fluidizing reactor and carry out calcination process.
Particularly, referring to Fig. 1, existing pyrite concentrate relieving haperacidity workshop section melting furnace system comprises the structures such as hot-blast stove, screening plant, fluidizing reactor, waste heat boiler, roaster blower fan and cooling humidifying roller, wherein, hot-blast stove, screening plant, fluidizing reactor and waste heat boiler are connected successively, and roaster blower fan is connected with fluidizing reactor with cooling humidifying roller.Its technological process is: tcrude ore enters fluidizing reactor by raw material workshop through hot-blast stove oven dry, screening after processing, the boiler smoke producing enters follow-up waste heat boiler and carries out energy recovery, and the molten slag (mean temperature is 900 ℃ of left and right) of generation enters cooling humidifying roller and enters interim slag field after cooling.
Applicant is in the time realizing this patent, find very high from fluidizing reactor slag temperature out, on average up to 900 ℃ of left and right, not only increase the processing load of cooling humidifying roller if directly send into cooling humidifying roller (also will process the waste residue that other operations produce) simultaneously, also caused the waste of heat energy.
Summary of the invention
In order to utilize the waste heat heat energy in slag, the utility model embodiment provides a kind of pyrite concentrate relieving haperacidity workshop section molten slag bootstrap system, and this system is arranged molten slag heat outward for fluidized bed furnace and collected to substitute original hot-blast stove and dry thermal source as raw ore.Described technical scheme is as follows:
The utility model embodiment provides a kind of pyrite concentrate relieving haperacidity workshop section molten slag bootstrap system, this system comprises hot-air drying unit 1, screening plant 2, fluidizing reactor 3, waste heat boiler 4, roaster blower fan 5, dust arrester 6, dedusting fan 7, slag collection device 9, cooling humidifying roller 10 and air-heater 11, described hot-air drying unit 1, screening plant 2, fluidizing reactor 3 and waste heat boiler 4 are connected successively, and the air inlet of described fluidizing reactor 3 is provided with described roaster blower fan 5; Between described fluidizing reactor 3 and cooling humidifying roller 10, be provided with described slag collection device 9, described slag collection device 9, air-heater 11, hot-air drying unit 1, dust arrester 6 and dedusting fan 7 are connected to form hot blast air channel successively by pipeline.
Wherein, the hot-air drying unit 1 in the utility model embodiment is drying roller.
Wherein, slag collection device 9 in the utility model embodiment comprises disk feeder 91 and hopper 92, described fluidizing reactor 3, disk feeder 91, hopper 92 and cooling humidifying roller 10 are connected successively, and described air-heater 11 is connected with described hopper 92 by pipeline.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
The utility model provides pyrite concentrate relieving haperacidity workshop section molten slag bootstrap system, this system is drawn out to the molten slag of fluidizing reactor separately in slag collection device, by air-introduced machine, heat is wherein introduced in newly-increased hot-air drying unit, tcrude ore utilizes this hot blast to be dried, the steam and the part dust that generate, outer row after purifying by dust arrester, the slag after heat exchange enters humidification roller again, enters slag field after fully cooling.This system has been utilized molten slag waste heat, has reduced energy resource consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing pyrite concentrate relieving haperacidity workshop section melting furnace system;
Fig. 2 is the structural representation of the pyrite concentrate relieving haperacidity workshop section molten slag bootstrap system that provides of the utility model embodiment.
In figure: 1 hot-air drying unit, 2 screening plants, 3 fluidizing reactors, 4 waste heat boilers, 5 roaster blower fans, 6 dust arresters, 7 dedusting fans, 8 chimneys, 9 slag collection devices, 91 disk feeders, 92 hoppers, 10 cooling humidifying rollers, 11 air-heaters.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 2, the utility model embodiment provides a kind of pyrite concentrate relieving haperacidity workshop section molten slag bootstrap system, and this system comprises hot-air drying unit 1, screening plant 2, fluidizing reactor 3, waste heat boiler 4, roaster blower fan 5, dust arrester 6, dedusting fan 7, chimney 8, slag collection device 9, cooling humidifying roller 10 and air-heater 11.Wherein, hot-air drying unit 1, screening plant 2, fluidizing reactor 3 and waste heat boiler 4 are connected and (between hot-air drying unit 1, screening plant 2 and fluidizing reactor 3, are connected by conveyer belt successively, fluidizing reactor 3 is connected by pipeline with waste heat boiler 4), the air inlet of fluidizing reactor 3 is provided with roaster blower fan 5 for air is provided.It is mainly that the discharge end of a upper structure and the feed end of next structure are connected between fluidizing reactor 3 and cooling humidifying roller 10, to be provided with slag collection device 9(, can be connected by conveyer belt as required), slag collection device 9, air-heater 11, hot-air drying unit 1, dust arrester 6, dedusting fan 7 and chimney 8 are by pipeline (it is mainly that the air outlet of a upper structure and the air intake vent of next structure are connected) composition hot blast air channel that is connected successively, this air channel is that the passage of hot blast is for drying to the raw ore of hot-air drying unit 1 the end of line gas disposal of going forward side by side.Wherein, slag collection device 9 is for collecting slag; Air-heater 11 is for extracting the waste heat of sirocco reclamation slag; Hot-air drying unit 1 is for realizing the oven dry to raw ore by hot blast; Dust arrester 6, dedusting fan 7 and chimney 8 carry out purified treatment for realizing to hot blast, prevent contaminated environment.
Wherein, the hot-air drying unit 1 in the utility model embodiment is drying roller.
Wherein, referring to Fig. 2, slag collection device 9 in the utility model embodiment comprises disk feeder 91 and hopper 92, fluidizing reactor 3, disk feeder 91, hopper 92 and cooling humidifying roller 10 are connected successively, and (it is mainly that the discharge end of a upper structure and the feed end of next structure are connected, can be connected by conveyer belt as required), air-heater 11 air inlets are connected by pipeline with the air outlet of hopper 92, on hopper 92, offer air intake.
Below in conjunction with Fig. 2, the effect of native system is described, the present embodiment improves for original 5 2,400,000 kilocalorie hot-blast stoves, and the gross data of original system is as follows:
Every hot-blast stove coal consumption: 640kg/h;
Hot-blast stove efficiency: 75%;
Hot-blast stove coal consumption: 640 ÷ 1000 × 5 × 24 × 330=25344t/a;
Coal-fired capacity calorific value: 25344 × 1000 × 5000 × 4.1816=5.3 × 1011kj/a;
Hot-blast stove produces heat energy situation: 5.3 × 1011 × 75%=3.97 × 1011kj/a;
3.97 × 1011kj/a >, 11.48 × 1010kj/a, adopts at present 5 hot-blast stoves to reach and produces the effect that tcrude ore is dried.
The gross data of the system after technological transformation is as follows:
970kg/ ton sulfuric acid (mark ore deposit, ore deposit consumption);
Ton acid produces slag: 0.89 ton;
Slag specific heat: 1.37kj/(kg ℃);
Slag mean temperature: 900 ℃;
If heat energy makes full use of rear slag temperature: 35 ℃;
Produce sulfuric acid: 500000 ÷ 970 × 1000=515464t/a;
Produce slag: 515464 × 0.89=458763t/a;
Heat of slags: 458763 × 1000 × 1.37 × (900-35)=5.437 × 1011kj/a;
The heat of slags rate of recovery: 75%;
Slag heat-recoverable: 5.437 × 1011 × 75%=4.08 × 1011kj/a;
Heat 4.08 × 1011kj/a that slag reclaims is greater than heat 3.97 × 1011kj/a that hot-blast stove provides, therefore adopt the heat reclaiming tcrude ore can be dried, this technique has good stability.
Heat-recoverable 4.08 × 1011kj/a after this project completes, substitute the corresponding minimizing coal consumption of hot-blast stove 25344t/a completely, by coal-fired 652 yuan of calculating per ton, can save every year coal-fired 1,652 ten thousand yuan, the corresponding saving electric weight of technological transformation 19611504kwh/a, by 0.56 yuan of calculating of every kilowatt hour electric weight, 1,098 ten thousand yuan of economize on electricity incomes.
The utility model provides pyrite concentrate relieving haperacidity workshop section molten slag bootstrap system, this system is drawn out to the molten slag of fluidizing reactor separately in slag collection device, by air-introduced machine, heat is wherein introduced in newly-increased hot-air drying unit, tcrude ore utilizes this hot blast to be dried, the steam and the part dust that generate, outer row after purifying by dust arrester, the slag after heat exchange enters humidification roller again, enters slag field after fully cooling.This system has been utilized molten slag waste heat, has reduced energy resource consumption.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. pyrite concentrate relieving haperacidity workshop section molten slag bootstrap system, comprise screening plant (2), fluidizing reactor (3), waste heat boiler (4), roaster blower fan (5) and cooling humidifying roller (10), described screening plant (2), fluidizing reactor (3) and waste heat boiler (4) are connected successively, and the air inlet of described fluidizing reactor (3) is provided with described roaster blower fan (5), it is characterized in that, described system also comprises slag collection device (9), air-heater (11), hot-air drying unit (1), dust arrester (6) and dedusting fan (7), between described fluidizing reactor (3) and cooling humidifying roller (10), be provided with described slag collection device (9), the discharge end of described hot-air drying unit (1) is connected with the feed end of described screening plant (2), described slag collection device (9), air-heater (11), hot-air drying unit (1), dust arrester (6) and dedusting fan (7) are connected to form hot blast air channel successively by pipeline.
2. pyrite concentrate relieving haperacidity according to claim 1 workshop section molten slag bootstrap system, is characterized in that, described hot-air drying unit (1) is drying roller.
3. pyrite concentrate relieving haperacidity according to claim 1 workshop section molten slag bootstrap system, it is characterized in that, described slag collection device (9) comprises disk feeder (91) and hopper (92), described fluidizing reactor (3), disk feeder (91), hopper (92) and cooling humidifying roller (10) are connected successively, and described air-heater (11) is connected with described hopper (92) by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320887767.1U CN203642724U (en) | 2013-12-31 | 2013-12-31 | Pyrite concentrate acid manufacturing workshop section molten slag waste heat utilization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320887767.1U CN203642724U (en) | 2013-12-31 | 2013-12-31 | Pyrite concentrate acid manufacturing workshop section molten slag waste heat utilization system |
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| Publication Number | Publication Date |
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| CN203642724U true CN203642724U (en) | 2014-06-11 |
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| CN201320887767.1U Expired - Lifetime CN203642724U (en) | 2013-12-31 | 2013-12-31 | Pyrite concentrate acid manufacturing workshop section molten slag waste heat utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344740A (en) * | 2014-11-07 | 2015-02-11 | 苏州工业园区姑苏科技有限公司 | Heat-transferred residual heat utilization device |
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2013
- 2013-12-31 CN CN201320887767.1U patent/CN203642724U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344740A (en) * | 2014-11-07 | 2015-02-11 | 苏州工业园区姑苏科技有限公司 | Heat-transferred residual heat utilization device |
| CN104344740B (en) * | 2014-11-07 | 2016-08-17 | 苏州工业园区姑苏科技有限公司 | One picks shifting residual heat using device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 431915 phosphating Industrial Zone, Hubei Province, Zhongxiang, Jingmen, Hubei Patentee after: HUBEI EZHONG ECOLOGICAL ENGINEERING Co.,Ltd. Address before: 431915 phosphating Industrial Zone, Hubei Province, Zhongxiang, Jingmen, Hubei Patentee before: HUBEI E'ZHONG CHEMICAL CO.,LTD. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |