CN1776285A - Method for prevent vibration of water return pipeline for alumina plant - Google Patents
Method for prevent vibration of water return pipeline for alumina plant Download PDFInfo
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- CN1776285A CN1776285A CN 200510003322 CN200510003322A CN1776285A CN 1776285 A CN1776285 A CN 1776285A CN 200510003322 CN200510003322 CN 200510003322 CN 200510003322 A CN200510003322 A CN 200510003322A CN 1776285 A CN1776285 A CN 1776285A
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- water
- heat exchanger
- pipe
- alumina
- return pipeline
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Abstract
The invention sets up water - water heat exchanger at technical return pipe of alumina plant. Heat exchanger of low temperature water is carried out between water - water heat exchanger and technical return water in high temperature. Being desalted water in second stage from self-contained thermal power station, the low temperature water enters into pipe (1). Technical return water enters into pipe of going to the heat exchanger, and exits from the heat exchanger. Eliminating flows of liquid-steam two phases in return pipe, the invention solves issue of vibration in return pipe thoroughly. More over, the invention is in favor of use of heat energy, suitable to alumina plant with self-contained thermal power station.
Description
Technical field
The present invention relates to the production technology of aluminium oxide, specifically, relate to the method that prevents technology vibration of water return pipeline in the alumina factory.
Technical background
The industrial pipeline vibration is a kind of very general phenomenon, and the influence factor of vibration is a lot, and the pipe vibration that has liquid-vapour two-phase flow in the pipeline and cause is wherein just arranged.
In the alumina technology production procedure, stripping and liquor evaporating plant have a large amount of steam condensate (technology backwater) to need to reclaim, usually the recovery process that adopts is: water of condensation is by entering recovery tank to the development unit dilatation, and then delivers to alumina plant self-contained cogeneration power plant by waterback pump.The steam condensate of stripping and liquor evaporating plant is the water under the saturation state, and its pressure is 0.6MPa, and temperature is 158 ℃, because reclaiming system is far away apart from stripping and liquor evaporating plant, the pipe resistance loss is bigger.Along with the reduction of pressure, water of condensation can produce vaporization, causes specific volume increase, flow velocity to improve.Further resistance loss forms vicious circle, produces liquid-vapour two-phase flow in pipeline, thereby causes pipe vibration.For this vibration, adopt the method for reinforcing pipes support to tackle usually, can only take stopgap measures like this, can not fundamentally eliminate pipe vibration.At present, alumina factory does not have the method that solves this difficult problem as yet
Summary of the invention
Purpose of the present invention just is to provide a kind of method that effectively prevents vibration of water return pipeline for alumina plant, with thorough solution technology vibration of water return pipeline problem.
The inventor is through observing and research, and identification will solve the pipe vibration problem, must solve the vaporization problem of water of condensation, prevents that just water of condensation from becoming saturation state under pressure reduction situation.
Based on this understanding, the present invention is achieved in that
Water-water heat source exchanger is set on water return pipeline for alumina plant, utilizes low temperature water to pass through water-water heat source exchanger and alumina factory high-temperature technology backwater carries out heat exchange.For alumina factory, it is the most suitable as low temperature water that the required secondary demineralized water of cogeneration power plant is provided in utilization for oneself.
Above-mentioned water-water heat source exchanger is the coil type heat exchanger of indirect heat exchange or the tubular heat exchanger of indirect heat exchange, the secondary demineralized water that temperature is lower passes through by pipe is interior, the higher technology backwater of temperature passes through between pipe, because the promotion of the temperature difference, two kinds of water carry out heat exchange at tube wall, thereby reduced return water temperature, made it become unsaturated water.Backwater can not produce vaporization with the reduction of pressure like this, has eliminated the situation of liquid in the water return pipeline-vapour two-phase flow.Provide the heat of the required secondary desalination water recovery process backwater of cogeneration power plant for oneself, improved the temperature of self, also can improve the thermal efficiency of providing the cogeneration power plant boiler for oneself.
Method of the present invention has not only fundamentally solved the problem of vibration of water return pipeline, and helps the heat energy utilization of the full factory of alumina factory.This method is applicable to and has the alumina factory of providing cogeneration power plant for oneself.
Description of drawings
Accompanying drawing 1 is a schematic flow sheet of the present invention.1 for to provide the required secondary demineralized water in-and-out pipe of cogeneration power plant for oneself among the figure, and 2 is water-water heat source exchanger, and 3 is the in-and-out pipe of technology backwater.
Embodiment
Certain alumina factory, the technology backwater of its stripping and liquor evaporating plant are the water under the saturation state, and its pressure is 0.6MPa, and temperature is 158 ℃, and the water yield is: stripping 70m
3/ h, evaporation 30m
3/ h.On the stripping of this factory and evaporation technology water return pipeline a coiled water-water heat source exchanger 2 is set respectively, its heat exchange area is respectively 15.3m
2, 8.9m
2Walk in the pipeline 1 as low temperature water with the secondary demineralized water of providing cogeneration power plant for oneself, the amount of secondary demineralized water is 65m
3/ h.The technology backwater enters away from pipeline 3 between the pipe of heat exchanger 2, goes out heat exchanger 2 again.
Claims (3)
1 one kinds of methods that prevent vibration of water return pipeline for alumina plant is characterized in that: water-water heat exchanger is set on water return pipeline for alumina plant, utilizes low temperature water to carry out heat exchange by water-water heat exchanger and alumina factory high-temperature technology backwater.
2 in accordance with the method for claim 1, it is characterized in that: for alumina factory, it is the most suitable as low temperature water that the required secondary demineralized water of cogeneration power plant is provided in utilization for oneself.
3 in accordance with the method for claim 1, it is characterized in that described water-water heat exchanger is the coil pipe type heat exchanger of indirect heat exchange, or the tubular heat exchanger of indirect heat exchange, the lower secondary demineralized water of temperature is by process in the pipe, and the higher technology backwater of temperature passes through between pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510003322 CN1776285A (en) | 2005-12-15 | 2005-12-15 | Method for prevent vibration of water return pipeline for alumina plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510003322 CN1776285A (en) | 2005-12-15 | 2005-12-15 | Method for prevent vibration of water return pipeline for alumina plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1776285A true CN1776285A (en) | 2006-05-24 |
Family
ID=36765941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510003322 Pending CN1776285A (en) | 2005-12-15 | 2005-12-15 | Method for prevent vibration of water return pipeline for alumina plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1776285A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851038A (en) * | 2010-04-14 | 2010-10-06 | 广西三宝山新技术水处理有限公司 | High-temperature condensed water temperature-lowering and desalting method |
| CN102107974A (en) * | 2009-12-28 | 2011-06-29 | 中国铝业股份有限公司 | Method for utilizing residual heat of poor-quality digesting backwater of aluminum oxide |
| CN107120703A (en) * | 2017-06-13 | 2017-09-01 | 湖州万隆住宅环保科技有限公司 | A kind of anti-resonance smoke exhaust pipe |
-
2005
- 2005-12-15 CN CN 200510003322 patent/CN1776285A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107974A (en) * | 2009-12-28 | 2011-06-29 | 中国铝业股份有限公司 | Method for utilizing residual heat of poor-quality digesting backwater of aluminum oxide |
| CN101851038A (en) * | 2010-04-14 | 2010-10-06 | 广西三宝山新技术水处理有限公司 | High-temperature condensed water temperature-lowering and desalting method |
| CN107120703A (en) * | 2017-06-13 | 2017-09-01 | 湖州万隆住宅环保科技有限公司 | A kind of anti-resonance smoke exhaust pipe |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |