CN104729314A - Condenser for aluminum oxide roaster smoke steam recovery - Google Patents
Condenser for aluminum oxide roaster smoke steam recovery Download PDFInfo
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- CN104729314A CN104729314A CN201510119108.7A CN201510119108A CN104729314A CN 104729314 A CN104729314 A CN 104729314A CN 201510119108 A CN201510119108 A CN 201510119108A CN 104729314 A CN104729314 A CN 104729314A
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- condenser
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The invention provides a condenser for aluminum oxide roaster smoke steam recovery and belongs to energy saving and emission reducing devices in the aluminum oxide production process. The condenser achieves smoke steam recovery and reduces haze resources. According to the condenser, aluminum oxide roaster smoke steam is cooled through three methods and condensed into water, and smoke steam recovery is achieved. The 150 DEG C overheated smoke steam is ejected out of a smoke pipe in the high-temperature and high-speed state and enters the condenser under the guidance of an apron, and first cooling is achieved through three-time expansion deformation cooling of a drum type container; second cooling is conducted through heat exchange carried out through a three-level evaporator; third cooling is conducted by conducing spraying twice to absorb heat of evaporation. The steam containing aluminum oxide dust is transformed into a dilute emulsion through three-time cooling, and the emulsion passes through a flow guide channel and flows out of a water outlet. The recovered emulsion is centralized into a special pipe and directly sent back to an aluminum oxide raw material workshop or used for other purposes. The dust is removed while crystal water is recovered and a humid environment and heat pollution are eliminated.
Description
Technical field:
The present invention relates to the device that a kind of alumina roasting furnace cigarette vapour reclaims, belong to the energy-saving and emission-reduction field of aluminum oxide production process.
Background technology:
The key equipment roaster of Alumina Corporation has a large amount of high temperature cigarette vapour to discharge every day, with the discharge of overheated steam, causes humid ambient and thermal pollution; Also have some aluminium oxide attritive powders do not reclaimed by electric cleaner also emptying with steam natural in cigarette vapour, cause haze to originate, more exacerbate the pollution to human and environment.
For the process of roaster high temperature cigarette vapour, at present, major part research is all the waste heat utilizing cigarette vapour, carries out heat exchange.Cold water and high temperature cigarette vapour are passed through separately independently equipment, reverse flow, and utilize waste heat to obtain high-temperature-hot-water, and then be used, these all do not have fundamentally contaminated solution problem.
The present invention intends the condenser adopting a kind of alumina roasting furnace cigarette vapour to reclaim, and cigarette vapour is directly changed into aqueous water and reclaims, containing aluminium oxide in the emulsion of formation.While recovered steam water, elimination wet environment and thermal pollution, also reach the object eliminating dust.The high-temp liquid reclaimed directly can send alumina raw material process workshop back to, not only accomplishes benign cycle, and also a saving a large amount of industrial waters; Also may be used for warming heat supply, the cryogenic liquid after heat supply cooling, further after precipitation or centrifuge process, aluminium oxide finished product can be recovered as; Liquid after part process can also be used for the water spray operation in alumina raw material goods yard, prevents bauxite from flying upward the dust pollution caused plant area and surrounding environment.
This be for alumina roasting furnace cigarette vapour reclaim new approaches, newly design.Through retrieval, before, state, inside and outsidely same patent of invention is not had to deliver, so, determine to apply for patent of invention.
Summary of the invention:
The present invention implements cooling to alumina roasting furnace cigarette vapour by three kinds of methods, and the object of cigarette vapour is reclaimed in final realization.The overheated cigarette vapour of 150 DEG C, with high temperature, fast state ejection chimney, under the guiding protecting skirt, enters condenser, and first method is the triple-expansion distortion cooling of high temperature gas by drum type container; Second method is that high temperature gas carries out heat exchange cooling by three grades of evaporimeters; The third method is by twice cryogenic liquid spraying, absorbs heat of vaporization cooling.Three coolings make gas be converted to liquid, and liquid, through flow-guiding channel, flows out from delivery port.The liquid reclaimed focuses in a special pipes, directly sends alumina raw material workshop back to or regards other use.
Condenser mainly have employed refrigerator principle, alumina roasting furnace cigarette vapour belongs to alkalescent, so evaporator material need use copper material, when roaster cigarette vapour contacts with evaporator surface, release the latent heat of vaporization and become condensate water, the latent heat released passes to air by the condenser of condenser outside, carries out heat exchange.Like this, high temperature cigarette vapour is constantly condensed by evaporimeter.When cigarette vapour is cooled and liquefies, its specific volume sharply reduces, and causes local depression in device inside, like this, reduces vapour lock, is conducive to passing through of follow-up cigarette vapour.
According to claim, the technical problem that patent of the present invention will solve is as follows:
1. the condenser of an alumina roasting furnace cigarette vapour recovery, in drum shape metal shell, respectively evaporator device is housed, automatic temp controller and gap spray equipment, it is characterized in that: the configuration design of device becomes three grades of drum type metal shells, and wall is covered with insulation material in the enclosure, evaporimeter is the principal heat exchange equipment of high temperature cigarette vapour cooling, become certain angle of inclination to intersect installation by two groups of evaporimeters to form, separately have two groups of sprinkling equipments from top to down, gap sprays low temperature water smoke.
2. the condenser of a kind of alumina roasting furnace cigarette vapour recovery according to claim 1, it is characterized in that: the inwall of metal cydariform shell is covered with insulation material, material surface is smooth, and be furnished with flow-guiding channel, be connected and fixed by ring flange between three grades of drum type shells, monolithic case is supported by a metal chassis of outside.
3. the condenser of a kind of alumina roasting furnace cigarette vapour recovery according to claim 1, it is characterized in that: two groups that become certain angle of inclination to intersect to install, three grades of evaporimeters select the copper product of anti-weak base, size and the drum type inwall of evaporimeter match, the pipeline of evaporimeter is equipped with fin, evaporator surface leaves pilot flow tank.
4. the condenser of a kind of alumina roasting furnace cigarette vapour recovery according to claim 1, it is characterized in that: be arranged on respectively two groups of sprinkling equipments above the second level and third level drum type equipment from top to down, the cooling water smoke of gap ejection, water smoke adopts and reversely to contact with high temperature cigarette vapour.
As follows for solving the technical scheme that above technical problem takes:
One, the design of three grades of drum type metal shells can make the roaster cigarette gas integration stages entered increase, according to thermodynamic principles, gas is while volumetric expansion, automatically the temperature of self can be reduced, be conducive to the conversion of vapour-liquid, also be conducive to reducing condensate water generation flash distillation, the inwall of metal cydariform shell is covered with insulation material, ensure that there is the environment of a low temperature condenser inside, the smooth surface of insulation material, and be furnished with flow-guiding channel, be conducive to liquefaction water flow and recovery, be connected and fixed by ring flange (band seal groove) between three grades of drum type shells, monolithic case is supported by a metal chassis of outside.
Two, the copper product of anti-weak base (aluminium hydroxide) selected by the two groups of evaporimeters becoming certain angle of inclination intersection to install, size and the drum type inwall of evaporimeter match, the pipeline of evaporimeter is equipped with fin, these schemes expand the contact area of cigarette vapour and evaporimeter most possibly, the pilot flow tank that evaporator surface all leaves, be convenient to condensed water and flow rapidly to inwall recovery, two groups of evaporimeters are respectively by the independent timing separately of two frequency modulation compressor bank on the platform of external metallization chassis, Interleaved control, temperature detection and temperature controlled sensor evaporimeter be equipped with.
Three, two groups of sprinkling equipments of alumina roasting furnace cigarette recovery device for steam, be arranged on the top of the second level and third level drum type equipment respectively, according to thermodynamic principles, using the little droplet sprayed as core, similar rain making, in supersaturated vapor, also can form large water droplet by condensing vapour further, while realizing cooling, be more conducive to withdrawal liquid.Water smoke absorbs heat of vaporization, can reduce cigarette stripping temperature further, and the vaporization completely and the economize energy that are conducive to water smoke are sprayed in gap.
The beneficial effect of patent of the present invention:
One, high in technological content: the condenser that alumina roasting furnace cigarette vapour reclaims is an innovation technically, combines the cooling measure of three kinds of forms, can realize reclaiming while aluminum oxide dust and the crystallization water.
Two, practical: the recovery of the condenser not only practical alumina roasting furnace cigarette vapour that alumina roasting furnace cigarette vapour reclaims, and, can apply for the enterprise such as petrochemical industry, heating power.The exhaust steam of current China 60% and condensate-water polishing do not give power, and waste heat overbottom pressure can not get utilizing fully.According to statistics, be about 4.5 hundred million tons by as the exhaust steam of waste vapour, discharge of wastewater and condensate water total amount every year, not only waste water resource, also add coal consumption.
Three, energy-saving and emission-reduction: country is be not more than 50mg/m to the alumina powder discharge standard in roaster cigarette vapour
3, the condenser that alumina roasting furnace cigarette vapour reclaims estimates that reclaiming aluminum oxide dust rate reaches 80 ~ 90%, like this, can make discharge standard reach 5 ~ 10mg/m
3below, greatly reducing the pollution of alumina powder foot couple environment, also reclaimed a large amount of crystallizations water simultaneously, improved ambient contamination, avoid consumption and the waste of steam, achieving the maximum utilization to reclaiming cigarette vapour.
Four, economic benefit: if every platform alumina roasting furnace is by the aluminium oxide output of 1350 tons/day, one day recyclable crystallization water, 714.7 tons of water and 144 kilograms of alumina powders (rate of recovery 80%), 1 year recyclable 260865.5 tons of crystallization water, water per ton, by 3 yuan, 1 year is 78.26 ten thousand yuan; Being figured in by the aluminium oxide of recovery, same 1 year 5.26 tons, recyclable aluminium oxide, if 2500 yuan, aluminium oxide per ton, 1 year is 13.2 ten thousand yuan.If have 4 roasters by an Alumina Corporation, then the value reclaiming the crystallization water for 1 year is 313.04 ten thousand yuan, and reclaiming aluminium oxide value is 52.8 ten thousand yuan; Meanwhile, the large water gaging of long-term recovery and aluminium oxide recycling, also will the good economic benefit of generation and social benefit.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, patent of the present invention is further illustrated.
Accompanying drawing is the condenser structural representation that alumina producer baking furnace fume reclaims,
1. evaporimeter A in figure; 2. delivery port; 3. protect skirt; 4. securing loop ring; 5. roaster chimney; 6. chassis; 7. the soft hook rope of flat horizontal stroke; 8. fixed support; 9. evaporimeter B; 10. drum type shell
Detailed description of the invention:
Intend the technical measures taked:
1, the evaporimeter (1) in accompanying drawing and (9) are the critical components of this device, for the contact area increasing cigarette vapour and condenser is also equipped with sieve-type deflector and temperature sensor on an evaporator, while sieve-type deflector makes cigarette vapour unimpeded, also the globule that condenser condenses collected and deliver to delivery port (2), according to the signal that temperature sensor is passed back, the real-time status of condenser work can be detected.Every one-level evaporimeter first will weld by package shell in the past, and interface section will add one section of sleeve pipe, prevents leakage of refrigerant.
2, quality and the fixation of whole device are not only undertaken in the chassis (6) in accompanying drawing, but also are provided with compressor and condenser, and the two and evaporimeter form refrigeration system.
3, for convenience of interior construction, three grades of cydariform shells (10) in accompanying drawing are respectively connected into one by ring flange.Whole condenser arrangement is subject to Force system by the soft hook rope (7) of balance and fixing garter spring (4) composition triangle, and condenser is fixed on roaster chimney (5) top by fixed support (8).Four with the soft hook rope of balance adjustment function, one hook tight roaster chimney, the other end is fixed on chassis, and its effect, except bearing pulling force, can also regulate the perpendicularity of cigarette recovery device for steam, thus ensure that stability and the security of retracting device.
4, cydariform shell wall thickness 4 ~ 5mm, makes three drum type structures, and each drum is in-built is mutually two groups of cross evaporimeter A and B.Leaving one section of space between cydariform outer casing bottom and roaster chimney, is the temperature that nature reduces overheated cigarette vapour on the one hand; Ensure that roaster blower pressure is not interrupted on the other hand.Meanwhile, the diameter of cydariform shell, slightly larger than roaster chimney diameter, protects the effect that skirt (3) guides in addition, ensures that cigarette vapour all can pass through condenser.
5, this device adopts PLC control system, automatically controls condenser temperature by temperature control sensor, ensures that condensing is most effective, again not ice gambling; The high-pressure hydraulic pump of water smoke is sprayed in gap, and also controlled by PLC, the time is adjusted by scene.Connection between required cable and wire wiring and freezing equipment, it should be noted that the environmental condition in high temperature, high humidity and high-altitude
6, steam-refrigerated circulation is made up of compression process, condensation process, expansion process, evaporation process.Utilize limited cold-producing medium exactly in the refrigeration system closed, repeatedly by refrigerant compression, condensation, expansion, evaporation, constantly in the heat absorption of evaporimeter place, high temperature cigarette vapour is lowered the temperature.The timing of two frequency modulation compressors, staggered work, every platform unit work 30 points, has a rest 20 minutes.A unit job is after 20 minutes, and another unit is also started working, and after 10 minutes, last compressor emergency shutdown was had a rest.So, iterative cycles.Both ensured that condenser internal temperature was stablized, ensured again that unit was normally had a rest.Also can according to the temperature information fed back, the atmospheric temperature different according to outside regulates automatically.The cooling system of condenser is fixed on chassis, and compressor will have rainproof measure.
Claims (4)
1. the condenser of an alumina roasting furnace cigarette vapour recovery, in drum shape metal shell, respectively evaporator device is housed, automatic temp controller and gap spray equipment, it is characterized in that: the configuration design of device becomes three grades of drum type metal shells, and wall is covered with insulation material in the enclosure, evaporimeter is the principal heat exchange equipment of high temperature cigarette vapour cooling, become certain angle of inclination to intersect installation by two groups of evaporimeters to form, separately have two groups of sprinkling equipments from top to down, gap sprays low temperature water smoke.
2. the condenser of a kind of alumina roasting furnace cigarette vapour recovery according to claim 1, it is characterized in that: the inwall of metal cydariform shell is covered with insulation material, material surface is smooth, and be furnished with flow-guiding channel, be connected and fixed by ring flange between three grades of drum type shells, monolithic case is supported by a metal chassis of outside.
3. the condenser of a kind of alumina roasting furnace cigarette vapour recovery according to claim 1, it is characterized in that: two groups that become certain angle of inclination to intersect to install, three grades of evaporimeters select the copper product of anti-weak base, size and the drum type inwall of evaporimeter match, the pipeline of evaporimeter is equipped with fin, evaporator surface leaves pilot flow tank.
4. the condenser of a kind of alumina roasting furnace cigarette vapour recovery according to claim 1, it is characterized in that: be arranged on respectively two groups of sprinkling equipments above the second level and third level drum type equipment from top to down, the cooling water smoke of gap ejection, water smoke adopts and reversely to contact with high temperature cigarette vapour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119108.7A CN104729314A (en) | 2015-03-13 | 2015-03-13 | Condenser for aluminum oxide roaster smoke steam recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119108.7A CN104729314A (en) | 2015-03-13 | 2015-03-13 | Condenser for aluminum oxide roaster smoke steam recovery |
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| Publication Number | Publication Date |
|---|---|
| CN104729314A true CN104729314A (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510119108.7A Pending CN104729314A (en) | 2015-03-13 | 2015-03-13 | Condenser for aluminum oxide roaster smoke steam recovery |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1161136A (en) * | 1997-08-26 | 1999-03-05 | Sumitomo Metal Ind Ltd | Operation of coke dry quenching facility |
| CN201028468Y (en) * | 2007-03-29 | 2008-02-27 | 上海理工大学 | High-temperature high-pressure natural circulation dry coke quenching exhaust-heat boiler |
| CN101903732A (en) * | 2007-12-18 | 2010-12-01 | 联合热交换技术股份公司 | Modular heat exchange system |
| CN201740408U (en) * | 2009-12-18 | 2011-02-09 | 南京凯盛开能环保能源有限公司 | Electric boiler flue gas waste heat recovery system with settlement heat storage chamber |
| CN102531081A (en) * | 2010-12-15 | 2012-07-04 | 张广林 | Method for treating wastewater from vanadium plant by using waste gas from roasting furnace |
| CN203820474U (en) * | 2014-05-25 | 2014-09-10 | 杨武 | Flue gas waste heat recovery and utilization device for aluminium hydroxide calcinator |
-
2015
- 2015-03-13 CN CN201510119108.7A patent/CN104729314A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1161136A (en) * | 1997-08-26 | 1999-03-05 | Sumitomo Metal Ind Ltd | Operation of coke dry quenching facility |
| CN201028468Y (en) * | 2007-03-29 | 2008-02-27 | 上海理工大学 | High-temperature high-pressure natural circulation dry coke quenching exhaust-heat boiler |
| CN101903732A (en) * | 2007-12-18 | 2010-12-01 | 联合热交换技术股份公司 | Modular heat exchange system |
| CN201740408U (en) * | 2009-12-18 | 2011-02-09 | 南京凯盛开能环保能源有限公司 | Electric boiler flue gas waste heat recovery system with settlement heat storage chamber |
| CN102531081A (en) * | 2010-12-15 | 2012-07-04 | 张广林 | Method for treating wastewater from vanadium plant by using waste gas from roasting furnace |
| CN203820474U (en) * | 2014-05-25 | 2014-09-10 | 杨武 | Flue gas waste heat recovery and utilization device for aluminium hydroxide calcinator |
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Application publication date: 20150624 |
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