CN203959865U - Based on the blast furnace slag flushing water purification system of function of mechanical steam recompression technology - Google Patents
Based on the blast furnace slag flushing water purification system of function of mechanical steam recompression technology Download PDFInfo
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- CN203959865U CN203959865U CN201420391182.5U CN201420391182U CN203959865U CN 203959865 U CN203959865 U CN 203959865U CN 201420391182 U CN201420391182 U CN 201420391182U CN 203959865 U CN203959865 U CN 203959865U
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Abstract
A kind of blast furnace slag flushing water purification system based on function of mechanical steam recompression technology, include liquid storage tank, in liquid storage tank, be provided with the heat exchanger tube for carrying out heat exchange with blast furnace slag quenching water, blast furnace slag quenching water in liquid storage tank and the secondary steam exit end producing after heat-exchanging tube bundle heat exchange are connected the inlet end of compressor by secondary steam discharge line, liquid storage tank is also provided with concentrated blast furnace slag quenching water exit end, concentrated blast furnace slag quenching water exit end is connected follow-up concentrated blast furnace slag flushing water treatment device by concentrated solution pipeline with the concentrated solution valve being arranged on concentrated solution pipeline, the compressed vapour exit end of compressor connects the compressed vapour inlet end that is arranged on the heat exchanger tube in liquid storage tank by compressed vapour discharge line, the exit end with the water of condensation after blast furnace slag flushing hydrothermal exchange in heat exchanger tube is connected condensing water conduit.The utility model water quality is after treatment higher, and temperature, pressure and enthalpy loss are less, the convenient later use to blast furnace slag quenching water.
Description
Technical field
The utility model relates to a kind of blast furnace slag flushing water purification system.Particularly relate to a kind of blast furnace slag flushing water purification system based on function of mechanical steam recompression technology.
Background technology
The features such as it is huge that the blast furnace slag quenching water of steel industry has the water yield, and impurity is more.Flushing cinder water technology has several different methods, as the slag bath precipitator method, Lhasa method, Ying Bafa etc.At present, iron and steel enterprise is often first used aforesaid method to process after blast furnace slag quenching water, then naturally cooling, recycles.But multiple treatment process exists the too much problem of the thin slag of the suspension in flushing cinder recirculated water, can cause the Wear and plug of e-quipment and pipe.After using filter method in the end to process, in flushing cinder recirculated water, suspended substance is less, but filter tank, the end needs timing back flushing, and the method can not solve the problem that contains iron, chlorine plasma impurity in water simultaneously, in long-time running, and corrosive pipeline outstanding problem.
Blast furnace slag quenching water is a kind of waste heat source of low temperature, because its water yield is large, has considerable recovery value.A lot of researchists have proposed method and the imagination of used heat in multiple recovery blast furnace slag quenching water, using blast furnace slag flushing water warm is to be simply the most also current most widely used blast furnace slag quenching water waste heat recovery mode, and the heat pump that uses heat to drive to carry out cooling be method further.But near changes in temperature demand iron and steel enterprise is often less, still has a large amount of heat energy to be discharged in air, has wasted the energy, has also caused thermal pollution.Comprise that suspended substance and the corrosive impurity that all can in blast furnace slag quenching water, be contained perplex for the multiple heat recovery system of warm cooling, and inconvenient large-scale promotion.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of after function of mechanical steam recompression technical finesse, removes the suspended substance that contains in blast furnace slag quenching water and the blast furnace slag flushing water purification system based on function of mechanical steam recompression technology of corrosive impurity.
The technical scheme that the utility model adopts is: a kind of blast furnace slag flushing water purification system based on function of mechanical steam recompression technology, include the liquid storage tank that inlet end is connected with blast furnace slag flushing water source with the liquid flowing valve being arranged in described blast furnace slag quenching water input duct by blast furnace slag quenching water input duct, in described liquid storage tank, be provided with the heat exchanger tube for carrying out heat exchange with described blast furnace slag quenching water, wherein, blast furnace slag quenching water in described liquid storage tank and the secondary steam exit end producing after heat-exchanging tube bundle heat exchange are connected the inlet end of compressor by secondary steam discharge line, described liquid storage tank is also provided with the concentrated blast furnace slag quenching water exit end in the time that blast furnace slag quenching water reaches setting concentration, described concentrated blast furnace slag quenching water exit end is connected follow-up concentrated blast furnace slag flushing water treatment device by concentrated solution pipeline with the concentrated solution valve being arranged on concentrated solution pipeline, the compressed vapour exit end of described compressor connects the compressed vapour inlet end that is arranged on the heat exchanger tube in liquid storage tank by compressed vapour discharge line, the exit end with the water of condensation after blast furnace slag flushing hydrothermal exchange in described heat exchanger tube is connected condensing water conduit.
In described blast furnace slag quenching water input duct, be also provided with liquid feeding pump.
On described concentrated solution pipeline, be also provided with concentrate pump.
Blast furnace slag flushing water purification system based on function of mechanical steam recompression technology of the present utility model, water quality is after treatment higher, and temperature, pressure and enthalpy loss are less, the convenient later use to blast furnace slag quenching water.After the utility model system stable operation, except to compressor energy supply, without providing generating steam required additional heat to system again, can complete the concentrated operation of waste water, feed small part energy, can obtain more heat energy, saved mass energy.
Brief description of the drawings
Fig. 1 is one-piece construction schematic diagram of the present utility model.
In figure
1: liquid storage tank 2: compressor
3: liquid feeding pump 4: concentrate pump
5: liquid flowing valve 6: concentrated solution valve
7: blast furnace slag quenching water input duct 8: concentrated solution pipeline
9: condensing water conduit 10: secondary steam discharge line
11: compressed vapour discharge line 12: heat exchanger tube
Embodiment
Below in conjunction with embodiment and accompanying drawing, the blast furnace slag flushing water purification system based on function of mechanical steam recompression technology of the present utility model is described in detail.
Blast furnace slag flushing water purification system based on function of mechanical steam recompression technology of the present utility model, include the liquid storage tank 1 that inlet end is connected with blast furnace slag flushing water source with the liquid flowing valve 5 being arranged in described blast furnace slag quenching water input duct 7 by blast furnace slag quenching water input duct 7, in described blast furnace slag quenching water input duct 7, be also provided with liquid feeding pump 3, blast furnace slag quenching water enters in liquid storage tank 1 by liquid feeding pump 3 and liquid flowing valve 5 successively.In described liquid storage tank 1, be provided with the heat exchanger tube 12 for carrying out heat exchange with described blast furnace slag quenching water, wherein, blast furnace slag quenching water in described liquid storage tank 1 and the secondary steam exit end producing after heat-exchanging tube bundle 12 heat exchanges are connected the inlet end of compressor 2 by secondary steam discharge line 10, described liquid storage tank 1 is also provided with the concentrated blast furnace slag quenching water exit end in the time that blast furnace slag quenching water reaches setting concentration, described concentrated blast furnace slag quenching water exit end is connected follow-up concentrated blast furnace slag flushing water treatment device by concentrated solution pipeline 8 with the concentrated solution valve 6 being arranged on concentrated solution pipeline 8, on described concentrated solution pipeline 8, be also provided with concentrate pump 4, the described concentrated blast furnace slag quenching water of discharging from liquid storage tank 1 is connected follow-up concentrated blast furnace slag flushing water treatment device successively with concentrate pump 4 by concentrated solution valve 6.The compressed vapour exit end of described compressor 2 connects by compressed vapour discharge line 11 the compressed vapour inlet end that is arranged on the heat exchanger tube 12 in liquid storage tank 1, and the exit end with the water of condensation after blast furnace slag flushing hydrothermal exchange in described heat exchanger tube 12 is connected condensing water conduit 9.
The technical process of the blast furnace slag flushing water purification system of the utility model based on function of mechanical steam recompression technology is as follows:
Blast furnace slag quenching water is by blast furnace slag quenching water input duct 7, liquid feeding pump 3 and liquid flowing valve 5 enter liquid storage tank 1, in liquid storage tank 1, produce secondary steam by the compressed vapour heat exchange evaporation in restraining with inflow heat exchanger, secondary steam enters compressor 2 by secondary steam discharge line 10, after compressed, improve temperature, pressure and enthalpy, compressed vapour enters in the heat exchanger tube 12 in liquid storage tank 1 by compressed vapour discharge line 11, after blast furnace slag quenching water heat exchange in compressed vapour in heat exchanger tube 12 and liquid storage tank 1, be condensed, after water of condensation is concentrated, warp is discharged by condensing water conduit 9, in the time that the blast furnace slag quenching water in liquid storage tank 1 reaches the higher concentration of setting, open concentrated solution valve 6 and concentrate pump 4, concentrated solution is discharged to follow-up concentrated blast furnace slag flushing water treatment device by concentrated solution pipeline 8 to be focused on.
The concentrated waste water of discharging by concentrated solution pipeline 8, can be set as higher concentration, need to be according to the characteristic of concentrated solution, and design facilitates the concentrated solution pipeline 8 of its discharge.
In above-mentioned technical process, the water of condensation of discharging by condensing water conduit 9, after evaporation and condensation, the insoluble suspended substance and the corrosive ion that in water, contain are less, and compared with undressed blast furnace slag quenching water, the not too large loss of its temperature, pressure, enthalpy, can carry out recycle after waste heat recovery by multiple Waste Heat Recovery System (WHRS).
When blast furnace slag flushing water purification system based on function of mechanical steam recompression technology of the present utility model has just started, need to heat the interior blast furnace slag quenching water of liquid storage tank 1, make it produce secondary steam, the secondary steam producing when the interior blast furnace slag quenching water evaporation concentration of liquid storage tank 1 can be compressed again through compressor 2, its pressure and temperature is raise, thereby can provide enough " thermal source " for the blast furnace slag quenching water in subsequent evaporation liquid storage tank 1, system flow is looped.Because blast furnace slag quenching water itself has had higher temperature, and some compressors (as lobed rotor compressor etc.) have that suction function makes to seal tank internal pressure and vaporization temperature reduces, so the required heat of evaporation blast furnace slag quenching water also decreases.Along with the operation of system, new blast furnace slag quenching water is admitted to liquid storage tank by blast furnace slag quenching water input duct, and the temperature in liquid storage tank and pressure can raise gradually, in the time reaching a certain ultimate value, and energy reserving balance, system reaches steady-working state.
Claims (3)
1. the blast furnace slag flushing water purification system based on function of mechanical steam recompression technology, include the liquid storage tank (1) that inlet end is connected with blast furnace slag flushing water source with the liquid flowing valve (5) being arranged in described blast furnace slag quenching water input duct (7) by blast furnace slag quenching water input duct (7), it is characterized in that, in described liquid storage tank (1), be provided with the heat exchanger tube (12) for carrying out heat exchange with described blast furnace slag quenching water, wherein, blast furnace slag quenching water in described liquid storage tank (1) and the secondary steam exit end producing after heat-exchanging tube bundle (12) heat exchange are connected the inlet end of compressor (2) by secondary steam discharge line (10), described liquid storage tank (1) is also provided with the concentrated blast furnace slag quenching water exit end in the time that blast furnace slag quenching water reaches setting concentration, described concentrated blast furnace slag quenching water exit end is connected follow-up concentrated blast furnace slag flushing water treatment device by concentrated solution pipeline (8) with the concentrated solution valve (6) being arranged on concentrated solution pipeline (8), the compressed vapour exit end of described compressor (2) connects the compressed vapour inlet end that is arranged on the heat exchanger tube (12) in liquid storage tank (1) by compressed vapour discharge line (11), the exit end with the water of condensation after blast furnace slag flushing hydrothermal exchange in described heat exchanger tube (12) is connected condensing water conduit (9).
2. the blast furnace slag flushing water purification system based on function of mechanical steam recompression technology according to claim 1, is characterized in that, in described blast furnace slag quenching water input duct (7), is also provided with liquid feeding pump (3).
3. the blast furnace slag flushing water purification system based on function of mechanical steam recompression technology according to claim 1, is characterized in that, on described concentrated solution pipeline (8), is also provided with concentrate pump (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420391182.5U CN203959865U (en) | 2014-07-15 | 2014-07-15 | Based on the blast furnace slag flushing water purification system of function of mechanical steam recompression technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420391182.5U CN203959865U (en) | 2014-07-15 | 2014-07-15 | Based on the blast furnace slag flushing water purification system of function of mechanical steam recompression technology |
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| CN203959865U true CN203959865U (en) | 2014-11-26 |
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| CN201420391182.5U Withdrawn - After Issue CN203959865U (en) | 2014-07-15 | 2014-07-15 | Based on the blast furnace slag flushing water purification system of function of mechanical steam recompression technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150549A (en) * | 2014-07-15 | 2014-11-19 | 天津大学 | Blast furnace slag flushing water purifying system based on mechanical steam recompressing technology |
-
2014
- 2014-07-15 CN CN201420391182.5U patent/CN203959865U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150549A (en) * | 2014-07-15 | 2014-11-19 | 天津大学 | Blast furnace slag flushing water purifying system based on mechanical steam recompressing technology |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20150923 |
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| RGAV | Abandon patent right to avoid regrant |