CN102052664A - Steam backwater processing system for process heating in alumina factory - Google Patents
Steam backwater processing system for process heating in alumina factory Download PDFInfo
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- CN102052664A CN102052664A CN2009103088812A CN200910308881A CN102052664A CN 102052664 A CN102052664 A CN 102052664A CN 2009103088812 A CN2009103088812 A CN 2009103088812A CN 200910308881 A CN200910308881 A CN 200910308881A CN 102052664 A CN102052664 A CN 102052664A
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Abstract
The invention discloses a steam backwater processing system for process heating in an alumina factory. The water inlet end of a plate-type heat exchanger (1) is connected with process backwater and a salt water removal pipe in a salt water removal station respectively; the water outlet end of the plate-type heat exchanger (1) is directly connected with an oxygenated water tank of a boiler room or is connected with a main valve (3), a drain flash tank (4), a backwater tank (5) and a pump (6) in sequence, and the water outlet pipe of the pump (6) is connected to the oxygenated water tank of the boiler room; the drain flash tank (4) is arranged above the backwater tank (5); a water quality monitoring system (7) is arranged inside the backwater tank (5) and connected with the main valve (3); and an auxiliary valve (2) is also connected with the water outlet end of the plate-type heat exchanger (1) and connected with the water quality monitoring system (7). The processing system can prevent steam-water mixture from entering into a deaerator directly and prevent the vibration of a pipeline; and the monitoring system is additionally arranged, so that the quality of water entering into the deaerator can meet the requirements for the operation of a boiler steam engine.
Description
Technical field
The present invention relates to a kind of alumina plant steam backwater treatment system.
Background technology
At a lot of processing factories such as alumina producer, need with the heat medium of steam as material, mode of heating is an indirect, backwater is delivered to the boiler room system.
Generally, the process steam backwater processing method of factory hour is directly arranged trench at flow, then get back to the boiler room when flow is big, the water of getting back to the boiler room then directly enters the deoxygenation water tank, and this return water mode has following shortcoming: 1, coming backwater from technology is steam water interface, directly enter the deoxygenation water tank, enter the oxygen-eliminating device pipe vibration.2, because process system is comparatively complicated, when process system broke down, material from leakage had impurity and sneaks in the backwater to backwater, if backwater directly enters oxygen-eliminating device, entered the safe operation that boiler and steam turbine system will have a strong impact on equipment.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of alumina plant heating steam backwater treatment system is provided, and this backwater treatment system can prevent that steam water interface from directly entering oxygen-eliminating device, prevents pipe vibration; Increase monitoring system simultaneously, guarantee that the water quality that enters oxygen-eliminating device satisfies boiler steam turbine service requirement, to overcome the deficiency of existing system.
The present invention takes following technical scheme: the water inlet end of plate type heat exchanger connects technology respectively and comes backwater and desalted water station to come the desalination water pipe, its water side one is directly to connect boiler room deoxygenation water tank, the one, connect valve, dewatering capacity-enlarging device, recovery tank, pump successively, the outlet pipe of pump connects boiler room deoxygenation water tank.
The dewatering capacity-enlarging device is above recovery tank.
In recovery tank, be provided with water quality monitoring system.
Water quality monitoring system is connected with main valve.
The auxiliary connection valve also in the water side of plate type heat exchanger.
Auxiliary-valve is connected with water quality monitoring system.
The dewatering capacity-enlarging device is used for getting rid of the steam of backwater.
Water quality monitoring system is used for monitoring the impurity of backwater.
During work: technology comes backwater to come demineralized water by the plate type heat exchanger heating from desalted water station, improve the demineralized water temperature, reduced the consumption of oxygen-eliminating device heating steam, reduced return water temperature, backwater through supercooling enters the dewatering capacity-enlarging device that is positioned over the recovery tank top, backwater gravity flow by further dilatation enters recovery tank, small amount of steam is emptying then, backwater is sent by pumping to the deoxygenation water tank in the recovery tank, in recovery tank, be provided with the instrument of on-line monitoring backwater water quality, when water quality can not satisfy the boiler feedwater requirement, then by closing main valve, with the unlatching auxiliary-valve backwater is drained into trench, avoid boiler and steam turbine are produced harm.
Description of drawings
Fig. 1 is a flowage structure schematic diagram of the present invention.
The specific embodiment
Embodiments of the invention: device of the present invention: plate type heat exchanger 1, auxiliary-valve 2, main valve 3, dewatering capacity-enlarging device 4, recovery tank 5, pump 6, all can directly adopt the finished product sold on the market or do certainly.Its annexation is: the water inlet end of plate type heat exchanger 1 connects technology respectively and comes backwater and desalted water station to come the desalination water pipe, its water side one is directly to connect boiler room deoxygenation water tank, the one, connect main valve 3, dewatering capacity-enlarging device 4, recovery tank 5, pump 6 successively, the outlet pipe of pump 6 connects boiler room deoxygenation water tank.
Dewatering capacity-enlarging device 4 is in the over top of recovery tank 5.
In recovery tank 5, be provided with water quality monitoring system 7.
Water quality monitoring system 7 is connected with main valve 3.
The auxiliary connection valve 2 also in the water side of plate type heat exchanger 1.
Auxiliary-valve 2 is connected with water quality monitoring system 7.
During work, technology comes backwater to come demineralized water by plate type heat exchanger 1 heating from desalted water station, improve the demineralized water temperature, reduced the consumption of oxygen-eliminating device heating steam, reduced return water temperature, backwater through supercooling enters the dewatering capacity-enlarging device 4 that is positioned over recovery tank 5 tops, backwater by further dilatation enters recovery tank 5, small amount of steam is emptying then, and backwater is delivered to the deoxygenation water tank by pump 6 in the recovery tank 5, is provided with the instrument 7 of on-line monitoring backwater water quality in recovery tank, when water quality can not satisfy the boiler feedwater requirement, then backwater is drained into trench, avoid boiler and steam turbine are produced harm by closing main valve 3 and opening auxiliary-valve 2.
Claims (6)
1. an alumina plant heats with steam backwater treatment system, it is characterized in that: the water inlet end of plate type heat exchanger (1) connects technology respectively and comes backwater and desalted water station to come the desalination water pipe, its water side one is directly to connect boiler room deoxygenation water tank, the one, connect main valve (3), dewatering capacity-enlarging device (4), recovery tank (5), pump (6) successively, the outlet pipe of pump (6) connects boiler room deoxygenation water tank.
2. alumina plant according to claim 1 steam backwater treatment system, it is characterized in that: dewatering capacity-enlarging device (4) is in the top of recovery tank (5).
3. alumina plant according to claim 1 is characterized in that: be provided with water quality monitoring system (7) in recovery tank (5) with steam backwater treatment system.
4. alumina plant according to claim 3 steam backwater treatment system, it is characterized in that: water quality monitoring system (7) is connected with main valve (3).
5. alumina plant according to claim 1 is characterized in that with steam backwater treatment system: the auxiliary connection valve (2) also in the water side of plate type heat exchanger (1).
6. alumina plant according to claim 5 steam backwater treatment system, it is characterized in that: auxiliary-valve (2) is connected with water quality monitoring system (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103088812A CN102052664A (en) | 2009-10-27 | 2009-10-27 | Steam backwater processing system for process heating in alumina factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103088812A CN102052664A (en) | 2009-10-27 | 2009-10-27 | Steam backwater processing system for process heating in alumina factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102052664A true CN102052664A (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103088812A Pending CN102052664A (en) | 2009-10-27 | 2009-10-27 | Steam backwater processing system for process heating in alumina factory |
Country Status (1)
| Country | Link |
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| CN (1) | CN102052664A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644757A (en) * | 2018-07-09 | 2018-10-12 | 中铝集团山西交口兴华科技股份有限公司 | A kind of recovery system and its control method of dissolution return water |
| CN109611821A (en) * | 2018-12-24 | 2019-04-12 | 新奥数能科技有限公司 | A kind of boiler supply water deaerating system and deoxidation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3313111A (en) * | 1965-04-30 | 1967-04-11 | Electrodyne Res Corp | Startup system for a once through steam generator including a startup balancing heatexchanger |
| CN2097346U (en) * | 1991-01-11 | 1992-02-26 | 卢秉威 | Continuous and regular desludging energy-collector for boiler |
| CN2097958U (en) * | 1991-01-15 | 1992-03-04 | 徐鑫富 | Multi-purpose boiler |
| CN2937832Y (en) * | 2006-08-16 | 2007-08-22 | 辽宁省锅炉技术研究所 | On-line water quantity automatic monitoring and blow-down system of steam boiler |
-
2009
- 2009-10-27 CN CN2009103088812A patent/CN102052664A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3313111A (en) * | 1965-04-30 | 1967-04-11 | Electrodyne Res Corp | Startup system for a once through steam generator including a startup balancing heatexchanger |
| CN2097346U (en) * | 1991-01-11 | 1992-02-26 | 卢秉威 | Continuous and regular desludging energy-collector for boiler |
| CN2097958U (en) * | 1991-01-15 | 1992-03-04 | 徐鑫富 | Multi-purpose boiler |
| CN2937832Y (en) * | 2006-08-16 | 2007-08-22 | 辽宁省锅炉技术研究所 | On-line water quantity automatic monitoring and blow-down system of steam boiler |
Non-Patent Citations (1)
| Title |
|---|
| 陈晓春等: "工业锅炉余热综合利用", 《设备管理与维修》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644757A (en) * | 2018-07-09 | 2018-10-12 | 中铝集团山西交口兴华科技股份有限公司 | A kind of recovery system and its control method of dissolution return water |
| CN109611821A (en) * | 2018-12-24 | 2019-04-12 | 新奥数能科技有限公司 | A kind of boiler supply water deaerating system and deoxidation method |
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Application publication date: 20110511 |