CN102531007A - Whole plant live steam condensed water heat energy recycling device of aluminum oxide production - Google Patents
Whole plant live steam condensed water heat energy recycling device of aluminum oxide production Download PDFInfo
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- CN102531007A CN102531007A CN2010106050468A CN201010605046A CN102531007A CN 102531007 A CN102531007 A CN 102531007A CN 2010106050468 A CN2010106050468 A CN 2010106050468A CN 201010605046 A CN201010605046 A CN 201010605046A CN 102531007 A CN102531007 A CN 102531007A
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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
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Abstract
The invention discloses a whole plant live steam condensed water heat energy recycling device of aluminum oxide production. According to the device, the inlet of a condensed water tank (1) is connected with an evaporation plant, a pre-desilication device and a decomposition pipe type heat exchanger inlet pipe respectively, the outlet of the condensed water tank (1) is connected with a first plate heat exchanger (4) and a second plate heat exchanger (5) through a first condensate pump (2) and a second condensate pump (3) respectively; a decomposition concentrate heat exchange mother liquor inlet pipe is connected with the inlet of an evaporation dope storage tank (6), the outlet of the evaporation dope storage tank (6) is connected with the first plate heat exchanger (4) and the second plate heat exchanger (5) through a first evaporation dope pump (7) and a second evaporation dope pump (8) respectively; and the outlet of the first plate heat exchanger (4) is connected with a good condensed water chute which is used for evaporating the dope and rinsing and a pipe leading to the evaporation plant respectively, and the outlet of the second plate heat exchanger (5) is connected with a mixing pipe leading to the circulating mother liquor storage tank and a pipe leading to a boiler room respectively. By adopting the whole plant live steam condensed water heat energy recycling device, the recycling problem of the heat energy of the live steam condensed water can be solved.
Description
Technical field
The present invention relates to full factory live steam condensed water heat energy recycle device in a kind of alumina producing.
Background technology
In whole alumina producing; Heating medium during low pressure live steam (the about 6bar of pressure, about 158 ℃ of the temperature) conduct that workshop sections such as evaporator station, desiliconization in advance, the heating of decompositionization clear liquid need adopt the thermal power plant boiler room is produced, the live steam heating medium forms live steam condensed water (the about 6bar of pressure after discharging the latent heat of vaporization after the heat exchange; About 158 ℃ of temperature); Directly send the thermal power plant boiler room then back to through behind the pressure and temperature reducing, remake the additional water into boiler, the partial heat energy of water of condensation is failed to obtain efficient recovery and is fallen with regard to Direct Loss like this; Thereby cause the thermal waste of steam condensate in the alumina producing, increased the production hear rate.
Mother liquor (vaporizing raw liquor) after decomposing in the alumina producing is delivered to evaporation section after seminal fluid heat exchange workshop section is warming up to about 85 ℃; Vaporizing raw liquor passes through low pressure live steam (the about 6bar of pressure in evaporator station; About 158 ℃ of temperature) more than the heat temperature raising to 120 ℃ and through becoming mother liquid evaporation after the flash concentration, delivers to the circulating mother liquor allotment workshop section incoming stock grinder section in the good back of allotment again and prepare burden.Because the steam consumption of evaporation section accounts for whole alumina producing energy consumption about 30%; Therefore low if get into the temperature of vaporizing raw liquor of evaporation section; Can cause required live steam consumption increasing in the evaporative process; Thereby increased the steam-water ratio of evaporation, caused the alumina producing energy consumption to increase, strengthened production cost and working cost.
Summary of the invention
The technical problem that the present invention will solve is: full factory live steam condensed water heat energy recycle device in a kind of alumina producing is provided; Thereby this device can improve temperature of vaporizing raw liquor practices thrift the evaporator station steam consumption; Thereby the heat energy that can recycle live steam condensed water again reduces the water of condensation thermosteresis, to overcome the deficiencies such as thermal waste that prior art exists.
The present invention adopts following technical scheme: the import of condensation water pot 1 adds thermalization stillness of night live steam condensed water pipe A, is come live steam condensed water pipe B, come live steam condensed water pipe C to be connected by preparatory desiliconization by evaporator station respectively with by decomposing tubular heat exchanger, and outlet is passed through cold first water extraction pump 2, second water extraction pump 3 respectively and is connected with first plate-type heat exchanger 4, second plate-type heat exchanger 5; Decompose the seminal fluid heat exchange and come the mother liquor pipe to be connected with 6 imports of vaporizing raw liquor storage tank, vaporizing raw liquor storage tank 6 exports and passes through the first vaporizing raw liquor pump 7, the second vaporizing raw liquor pump 8 respectively and be connected with first plate-type heat exchanger 4, second plate-type heat exchanger 5; 4 outlets of first plate-type heat exchanger connect good water of condensation barrel F, the devaporation station of devaporation stoste and washing respectively and use pipe G, and 5 outlets of second plate-type heat exchanger connect respectively goes the allotment of circulating mother liquor storage tank with managing D, going to the boiler house with pipe E; On condensation water pot 1 outlet conduit, conductivity meter 12 is set.
On the water of condensation import and export of first plate-type heat exchanger 4, second plate-type heat exchanger 5 and vaporizing raw liquor import and export pipeline, TM 10 is set.
On the vaporizing raw liquor pipeline of first plate-type heat exchanger 4, second plate-type heat exchanger 5, pressure warning unit 11 is being set.
On the first vaporizing raw liquor pump 7, the second vaporizing raw liquor pump 8, frequency transformer is set.
Liquidometer 9 is set on condensation water pot 1.
Do not reclaim the device of heat energy compares with the direct back boiler of general live steam condensed water room cooling decompression; Flow process of the present invention is simple; Though increased heat-exchanger rig, reduced the reducing-and-cooling plant of the former usefulness of boiler systems, so facility investment be few; And heat energy can be recycled effectively, its energy-saving effect and remarkable in economical benefits.The present invention has not only solved each workshop live steam condensed water heat energy recycle problem of alumina producer; Live steam condensed water cooling decompression and heat-energy losses of causing before getting into the boiler house have been avoided; Simultaneously; The present invention can improve temperature of vaporizing raw liquor effectively, has practiced thrift the required live steam consumption of evaporator station heating evaporation stoste, thereby has reduced the production energy consumption of aluminum oxide; On condensation water pot 1 outlet conduit, conductivity meter is set, is used to measure the water quality requirement that whether reaches oiler feed from next its specific conductivity of live steam condensed water of full factory, form water quality safety bypass flow process.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention.
Among the figure, A representes to add thermalization stillness of night live steam condensed water pipe by decomposing tubular heat exchanger, and B representes to come the live steam condensed water pipe by evaporator station; C representes to come the live steam condensed water pipe by preparatory desiliconization; D representes the allotment of circulating mother liquor storage tank with pipe, and E representes the boiler house with pipe, and F representes the good water of condensation barrel of devaporation stoste and washing; G representes the devaporation station with pipe, and H representes to come the mother liquor pipe by decomposing the seminal fluid heat exchange.
Embodiment
Embodiments of the invention: as shown in Figure 1; The import of condensation water pot 1 adds thermalization stillness of night live steam condensed water pipe A, is come live steam condensed water pipe B, come live steam condensed water pipe C to be connected by preparatory desiliconization by evaporator station respectively with by decomposing tubular heat exchanger, and outlet is passed through cold first water extraction pump 2, second water extraction pump 3 respectively and is connected with first plate-type heat exchanger 4, second plate-type heat exchanger 5; Decompose the seminal fluid heat exchange and come the mother liquor pipe to be connected with 6 imports of vaporizing raw liquor storage tank, vaporizing raw liquor storage tank 6 exports and passes through the first vaporizing raw liquor pump 7, the second vaporizing raw liquor pump 8 respectively and be connected with first plate-type heat exchanger 4, second plate-type heat exchanger 5; 4 outlets of first plate-type heat exchanger connect good water of condensation barrel F, the devaporation station of devaporation stoste and washing respectively and use pipe G, and 5 outlets of second plate-type heat exchanger connect respectively goes the allotment of circulating mother liquor storage tank with managing D, going to the boiler house with pipe E; On condensation water pot 1 outlet conduit, conductivity meter 12 is set.Conductivity meter is measured the water quality requirement that whether reaches oiler feed from next its specific conductivity of live steam condensed water of full factory; Qualified (the specific conductivity≤5 μ S/cm of specific conductivity; 25 ℃) water of condensation directly after heat exchange cooling, deliver to the boiler house as boiler replenishing water; The water of condensation of specific conductivity defective (specific conductivity＞5 μ S/cm, 25 ℃) is used hot water as each workshop of full factory in the good condensate draining that is pumped to the vaporizing raw liquor workshop, form water quality safety bypass flow process.
On the water of condensation import and export of first plate-type heat exchanger 4, second plate-type heat exchanger 5 and vaporizing raw liquor import and export pipeline, TM 10 is set.Water of condensation and temperature of vaporizing raw liquor before and after the thermometer measure heat exchange; And judge the heat exchange effect of plate-type heat exchanger, the temperature out of regulating vaporizing raw liquor flow control water of condensation and vaporizing raw liquor according to the import and export temperature of heat transferring medium.
On the vaporizing raw liquor pipeline of first plate-type heat exchanger 4, second plate-type heat exchanger 5, pressure warning unit 11 is being set.The manometry vaporizing raw liquor gets into the pressure reduction of first plate-type heat exchanger 4, second plate-type heat exchanger, 5 front and back, judges the situation that scabs of first plate-type heat exchanger 4, second plate-type heat exchanger, 5 inner plates, confirms whether plate cleans or change.
On the first vaporizing raw liquor pump 7, the second vaporizing raw liquor pump 8, frequency transformer is set.Frequency transformer is regulated the vaporizing raw liquor flow that gets into first plate-type heat exchanger 4, second plate-type heat exchanger 5, with the live steam condensed water flow matches, makes temperature after the live steam condensed water heat exchange cooling below 95 ℃.
Liquidometer 9 is set on condensation water pot 1.Liquidometer is monitored measurement to the water of condensation liquid level in the condensation water pot 1; During high liquid level warning valve opening on the inlet pipe of condensation water pot 1 is turned down; During low liquid level warning valve opening on the outlet pipe of first condensate pump 2, second condensate pump 3 is turned down, make liquid level in the condensation water pot 1 in normal range.
Working process of the present invention is following: the live steam condensed water (about 158 ℃) that comes from each workshop section of full factory is delivered to first plate-type heat exchanger 4, second interchanger 5 through first condensate pump 2, second condensate pump 3 and is that vaporizing raw liquor carries out heat exchange from the seed precipitation solution that decomposes through condensation water pot 1 compiles after, the live steam condensed water after the cooling is delivered to the boiler house as boiler replenishing water.Part vaporizing raw liquor is delivered to through the first vaporizing raw liquor pump 7 and is directly delivered to evaporator station after 4 heat exchange of first plate-type heat exchanger heat up as the evaporation charging; Part vaporizing raw liquor is delivered to deliver to after 5 heat exchange of second plate-type heat exchanger heat up through the second vaporizing raw liquor pump 8 and is joined mining mother liquor as raw material after the circulating mother liquor storage tank is allocated.On first plate-type heat exchanger 4, second interchanger, 5 charging and discharging pipes, TM 10 is set, controls the drop temperature of vaporizing raw liquor and live steam condensed water through the flow of the first speed control by frequency variation vaporizing raw liquor pump 7, the second speed control by frequency variation vaporizing raw liquor pump 8.On the vaporizing raw liquor charging and discharging pipe of first plate-type heat exchanger 4, second interchanger 5, pressure warning unit 11 is set, judges whether to clean or change plate through input and output material pressure reduction.On condensation water pot 1 outlet pipe, conductivity meter 12 is set; Qualified (the specific conductivity≤5 μ S/cm of specific conductivity; 25 ℃) water of condensation after first plate-type heat exchanger 4, second interchanger, 5 heat exchange cooling, deliver to the boiler house as boiler replenishing water; The water of condensation of specific conductivity defective (specific conductivity＞5 μ S/cm, 25 ℃) directly send the good condensate draining in vaporizing raw liquor workshop as full station-service hot water, forms water quality safety bypass flow process.Liquidometer 9 is set on condensation water pot 1; Water of condensation liquid level in the condensation water pot 1 is monitored measurement; During high liquid level warning valve opening on the inlet pipe of condensation water pot 1 is turned down, during low liquid level warning valve opening on the outlet pipe of first condensate pump 2, second condensate pump 3 is turned down.
Claims (5)
1. full factory live steam condensed water heat energy recycle device in the alumina producing; It is characterized in that: the import of condensation water pot (1) adds thermalization stillness of night live steam condensed water pipe (A), is come live steam condensed water pipe (B), come live steam condensed water pipe (C) to be connected by preparatory desiliconization by evaporator station respectively with by decomposing tubular heat exchanger, and outlet is connected with first plate-type heat exchanger (4), second plate-type heat exchanger (5) through cold first water extraction pump (2), second water extraction pump (3) respectively; Decompose the seminal fluid heat exchange and come the mother liquor pipe to be connected with vaporizing raw liquor storage tank (6) import, vaporizing raw liquor storage tank (6) outlet is connected with first plate-type heat exchanger (4), second plate-type heat exchanger (5) through the first vaporizing raw liquor pump (7), the second vaporizing raw liquor pump (8) respectively; First plate-type heat exchanger (4) outlet connects good water of condensation barrel (F), the devaporation station of devaporation stoste and washing respectively and uses pipe (G), and second plate-type heat exchanger (5) outlet connects respectively goes the allotment of circulating mother liquor storage tank with managing (D), going to the boiler house with pipe (E); On condensation water pot (1) outlet conduit, conductivity meter (12) is set.
2. full factory live steam condensed water heat energy recycle device in the alumina producing according to claim 1 is characterized in that: on the water of condensation import and export of first plate-type heat exchanger (4), second plate-type heat exchanger (5) and vaporizing raw liquor import and export pipeline, TM (10) is set.
3. full factory live steam condensed water heat energy recycle device is characterized in that: on the vaporizing raw liquor pipeline of first plate-type heat exchanger (4), second plate-type heat exchanger (5), pressure warning unit (11) is being set in the alumina producing according to claim 1.
4. full factory live steam condensed water heat energy recycle device is characterized in that: on the first vaporizing raw liquor pump (7), the second vaporizing raw liquor pump (8), frequency transformer is set in the alumina producing according to claim 1.
5. full factory live steam condensed water heat energy recycle device is characterized in that: liquidometer (9) is set on condensation water pot (1) in the alumina producing according to claim 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106050468A CN102531007A (en) | 2010-12-26 | 2010-12-26 | Whole plant live steam condensed water heat energy recycling device of aluminum oxide production |
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| CN2010106050468A CN102531007A (en) | 2010-12-26 | 2010-12-26 | Whole plant live steam condensed water heat energy recycling device of aluminum oxide production |
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| CN102531007A true CN102531007A (en) | 2012-07-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992363A (en) * | 2012-10-24 | 2013-03-27 | 广西华银铝业有限公司 | Steam waste heat recovery of dissolved and diluted slurry |
| CN105271326A (en) * | 2014-06-27 | 2016-01-27 | 沈阳铝镁设计研究院有限公司 | Method for improving water-return ratio of primary water in evaporation system |
| CN105314663A (en) * | 2015-12-11 | 2016-02-10 | 东北大学设计研究院（有限公司） | Device for recycling red mud disposal backwater in aluminum oxide plant and use method of device |
| CN107176618A (en) * | 2017-06-22 | 2017-09-19 | 湖南纳动环保节能科技有限公司 | A kind of equipment for the method and its use for improving alumina producer temperature of vaporizing raw liquor |
| CN112344756A (en) * | 2020-09-24 | 2021-02-09 | 靖西天桂铝业有限公司 | Unqualified new steam condensate water waste heat utilization and secondary recovery method |
| CN112429756A (en) * | 2020-12-17 | 2021-03-02 | 中铝国际工程股份有限公司 | Method and device for controlling temperature of first decomposition tank |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992363A (en) * | 2012-10-24 | 2013-03-27 | 广西华银铝业有限公司 | Steam waste heat recovery of dissolved and diluted slurry |
| CN105271326A (en) * | 2014-06-27 | 2016-01-27 | 沈阳铝镁设计研究院有限公司 | Method for improving water-return ratio of primary water in evaporation system |
| CN105314663A (en) * | 2015-12-11 | 2016-02-10 | 东北大学设计研究院（有限公司） | Device for recycling red mud disposal backwater in aluminum oxide plant and use method of device |
| CN107176618A (en) * | 2017-06-22 | 2017-09-19 | 湖南纳动环保节能科技有限公司 | A kind of equipment for the method and its use for improving alumina producer temperature of vaporizing raw liquor |
| CN112344756A (en) * | 2020-09-24 | 2021-02-09 | 靖西天桂铝业有限公司 | Unqualified new steam condensate water waste heat utilization and secondary recovery method |
| CN112429756A (en) * | 2020-12-17 | 2021-03-02 | 中铝国际工程股份有限公司 | Method and device for controlling temperature of first decomposition tank |
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Application publication date: 20120704 |