CN105624715A - Acid regeneration system achieving acid blending in temperature control self-adaptive manner and control method of acid regeneration system - Google Patents
Acid regeneration system achieving acid blending in temperature control self-adaptive manner and control method of acid regeneration system Download PDFInfo
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- CN105624715A CN105624715A CN201610111383.9A CN201610111383A CN105624715A CN 105624715 A CN105624715 A CN 105624715A CN 201610111383 A CN201610111383 A CN 201610111383A CN 105624715 A CN105624715 A CN 105624715A
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- tower
- water
- jet cleaning
- acid
- spray liquid
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- 239000002253 acid Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims description 18
- 230000008929 regeneration Effects 0.000 title abstract description 6
- 238000011069 regeneration method Methods 0.000 title abstract description 6
- 238000002156 mixing Methods 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 116
- 239000007921 spray Substances 0.000 claims abstract description 93
- 238000001816 cooling Methods 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 238000010521 absorption reaction Methods 0.000 claims abstract description 45
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 66
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 60
- 239000003546 flue gas Substances 0.000 claims description 60
- 239000012530 fluid Substances 0.000 claims description 38
- 239000007789 gas Substances 0.000 claims description 23
- 238000000746 purification Methods 0.000 claims description 22
- 239000002826 coolant Substances 0.000 claims description 16
- 239000000498 cooling water Substances 0.000 claims description 9
- 230000001172 regenerating effect Effects 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000003860 storage Methods 0.000 abstract description 4
- 238000001723 curing Methods 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013005 condensation curing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/36—Regeneration of waste pickling liquors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses an acid regeneration system achieving acid blending in a temperature control self-adaptive manner. The acid regeneration system comprises an absorption tower, a jet washing tower and a spray cooling tower which are sequentially connected. A spray liquid outlet of the jet washing tower is communicated with a first spray liquid inlet of the jet washing tower and a spray liquid inlet of the absorption tower through a pipeline. A spray liquid outlet of the spray cooling tower is communicated with a spray liquid inlet of the spray cooling tower and a second spray liquid inlet of the jet washing tower through a pipeline. A jet washing pump is mounted at the position, at the spray liquid outlet of the jet washing tower, of the corresponding pipeline. An absorption tower spray flowmeter and an absorption tower spray control valve are mounted at the positions, at the spray liquid inlet of the absorption tower, of the corresponding pipeline. A spray cooling pump, a circulating liquid cooler and a circulating liquid outlet thermometer are mounted at the positions, at the spray liquid outlet of the spray cooling tower, of the corresponding pipeline. According to the acid regeneration system achieving acid blending in the temperature control self-adaptive manner, HCl recovery is achieved without adding a rinse water storage and supply system.
Description
Technical field
The present invention relates to stainless steel steel rolling spent acid solution recovery technology field, particularly relate to acid purification system and control method thereof that a kind of temperature control self-adaptation joins acid.
Background technology
The spent acid solution that cold-rolling pickling band steel produces, has extremely strong corrodibility. If do not processed, environment will be caused serious pollution, simultaneously due to the discharge that spent acid is a large amount of, also result in the raising of pickling cost. Now for, in the process of spent pickle liquor, spray roasting technique is wherein advanced reclaiming process.
In spray roasting acid regeneration process, spent acid generation chemical reaction, produces free HCl, after being absorbed by absorption tower, forms regenerating acid, repeatedly washs to meet qualified discharge requirement more simultaneously before being disposed to air.
In the middle of actual engineering production run, it is necessary to using outer rinse water of joining that the HCl in absorption tower carries out spray pouring absorption, this just needs to increase rinse water and stores and supply system, causes cost recovery height.
Summary of the invention
The main purpose of the present invention is to provide a kind of temperature control self-adaptation to join sour acid purification system and control method thereof, it is intended to avoid being reclaimed by HCl when increasing rinse water storage and supply system.
For achieving the above object, the present invention provides a kind of temperature control self-adaptation to join the acid purification system of acid, comprises the absorption tower, jet cleaning tower and the water cooling tower that connect successively, wherein,
The spray liquid outlet of described jet cleaning tower is connected with the spray liquid entrance of its first spray liquid entrance and absorption tower by pipeline, the spray liquid outlet of described water cooling tower is connected by the 2nd spray liquid entrance of pipeline with its spray liquid entrance and jet cleaning tower, the pipeline in the spray liquid exit of described jet cleaning tower is provided with jet cleaning pump, the pipeline of the spray liquid ingress on described absorption tower is provided with absorption tower spray flow meter and absorption tower spray pouring control valve, the pipeline in the spray liquid exit of described water cooling tower is provided with spraying cooling pump, for circulation fluid water cooler and the circulation fluid temperature out meter of chilling spray liquid, the pipeline of the 2nd spray liquid ingress of described jet cleaning tower is provided with the spray of jet cleaning column separator and drenches control valve, the room, chamber of described jet cleaning tower and water cooling tower is separately installed with jet cleaning column separator liquidometer and water cooling tower separator liquidometer.
Preferably, pipeline is provided with between the exhanst gas outlet on described absorption tower and the smoke inlet of jet cleaning tower behind absorption tower flue gas pressures meter after flue-gas temperature meter and absorption tower.
Preferably, pipeline is provided with between the exhanst gas outlet of described jet cleaning tower and the smoke inlet of water cooling tower after jet cleaning tower flue gas pressures meter after flue-gas temperature meter and jet cleaning tower.
Preferably, the pipeline of the smoke outlet of described water cooling tower is provided with flue-gas temperature meter and exhaust gas fan after water cooling tower.
Preferably, described circulation fluid water cooler is water cooling equipment.
Preferably, the cooling water inlet of described circulation fluid water cooler is connected to water source with water coolant by pipeline, the cooling water outlet of described circulation fluid water cooler is connected with water coolant backwater source by pipeline, and the pipeline at the cooling water inlet place of described circulation fluid water cooler is provided with water coolant water supply control valve.
Preferably, described jet cleaning tower adopts the split-type structural of band separator, adopts spray to drench, to reach better dust removing effects above the separator of band filler.
The present invention proposes a kind of control method based on above-mentioned acid purification system further, comprises the following steps:
It is carried out reverse spray through spray liquid after entering the absorption tower of band filler and drenches and absorb by baking flue gas, forms regenerating acid for again utilizing to be absorbed by the sour gas in flue gas;
Baking flue gas after absorbing enters jet cleaning tower, contacts dedusting with the spray liquid in jet cleaning pump;
Baking flue gas after dedusting enters water cooling tower and it is lowered the temperature by spray liquid heat exchange, and the baking flue gas after cooling delivers to vent gas washing system for discharge by the suction of exhaust gas fan.
Preferably, according to the reading of jet cleaning column separator liquidometer and water cooling tower separator liquidometer, the temperature of adjustment circulation fluid water cooler cooling Posterior circle liquid and water coolant are to water regulating valve.
The temperature control self-adaptation that the present invention proposes joins the acid purification system of acid, with the use of water coolant to curing flue gas lower the temperature, to spray liquid recycle, make it to reach by the object of the water vapor condensation curing in flue gas, meet and absorb the requirement that acid gas produces regenerating acid required water, achieve the recovery to HCl, the storage of rinse water and corresponding rinse water supply system can be saved simultaneously, thus greatly save investment. It is condensed owing to curing water vapors a large amount of in flue gas, the total amount of baking flue gas is reduced greatly, is conducive to the optimization of exhaust gas fan type selecting, reduces investment outlay. In addition, jet cleaning tower has been set up, it is possible to removed by iron oxide dusts a large amount of in the middle of baking flue gas so that spraying cooling circulation fluid is cleaned before water cooling tower, circulation fluid water cooler can not be resulted in blockage etc. and to destroy, it is to increase the work-ing life of circulation fluid water cooler. Finally, by arranging water cooling tower, to curing, flue gas cool-down makes large quantity of moisture condensation wherein enter circulation fluid, and this process is of value to the removal of the flue gas impurity of system with qualified discharge.
Accompanying drawing explanation
Fig. 1 is the structural representation that temperature control self-adaptation of the present invention joins the acid purification system preferred embodiment of acid.
In figure: 1-absorption tower, 2-jet cleaning tower, 3-water cooling tower, 4-exhaust gas fan, 5-jet cleaning pump, 6-spraying cooling pump, 7-circulation fluid water cooler, flue-gas temperature meter behind 8-absorption tower, flue gas pressures meter behind 9-absorption tower, flue-gas temperature meter after 10-jet cleaning tower, flue gas pressures meter after 11-jet cleaning tower, flue-gas temperature meter after 12-water cooling tower, 13-absorption tower spray flow meter, control valve is drenched in the spray of 14-absorption tower, 15-circulation fluid temperature out meter, 16-water coolant water supply control valve, control valve is drenched in the spray of 17-jet cleaning column separator, 18-jet cleaning column separator liquidometer, 19-water cooling tower separator liquidometer.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
The present invention proposes the acid purification system that a kind of temperature control self-adaptation joins acid.
Reference Fig. 1, Fig. 1 are the structural representation that temperature control self-adaptation of the present invention joins the acid purification system preferred embodiment of acid.
In this preferred embodiment, a kind of temperature control self-adaptation joins the acid purification system of acid, comprises the absorption tower 1, jet cleaning tower 2 and the water cooling tower 3 that connect successively, wherein,
The spray liquid outlet of jet cleaning tower 2 is connected with the spray liquid entrance of its first spray liquid entrance and absorption tower 1 by pipeline, the spray liquid outlet of water cooling tower 3 is connected by the 2nd spray liquid entrance of pipeline with its spray liquid entrance and jet cleaning tower 2, the pipeline in the spray liquid exit of jet cleaning tower 2 is provided with jet cleaning pump 5, the pipeline of the spray liquid ingress on absorption tower 1 is provided with absorption tower spray flow meter 13 and absorption tower spray pouring control valve 14, the pipeline in the spray liquid exit of water cooling tower 3 is provided with spraying cooling pump 6, for circulation fluid water cooler 7 and the circulation fluid temperature out meter 15 of chilling spray liquid, the pipeline of the 2nd spray liquid ingress of jet cleaning tower 2 is provided with the spray of jet cleaning column separator and drenches control valve 17, the room, chamber of jet cleaning tower 2 and water cooling tower 3 is separately installed with jet cleaning column separator liquidometer 18 and water cooling tower separator liquidometer 19.
Control absorption tower spray according to absorption tower spray flow meter 13 and drench control valve 14, thus regulate the flow of spray liquid, discharge after the sour gas in flue gas is fully absorbed formation regenerating acid. Jet cleaning column separator liquidometer 18 and water cooling tower separator liquidometer 19 are respectively used to detect the store content of spray liquid in jet cleaning tower 2 and water cooling tower 3.
Further, pipeline is provided with between the exhanst gas outlet on absorption tower 1 and the smoke inlet of jet cleaning tower 2 behind absorption tower flue gas pressures meter 9 after flue-gas temperature meter 8 and absorption tower.
Further, pipeline is provided with between the exhanst gas outlet of jet cleaning tower 2 and the smoke inlet of water cooling tower 3 after jet cleaning tower flue gas pressures meter 11 after flue-gas temperature meter 10 and jet cleaning tower.
Further, the pipeline of the smoke outlet of water cooling tower 3 is provided with flue-gas temperature meter 12 and exhaust gas fan 4 after water cooling tower.
In the present embodiment, circulation fluid water cooler 7 is water cooling equipment. In circulation fluid water cooler 7, heat transfer process is indirect heat exchange. The cooling water inlet of circulation fluid water cooler 7 is connected to water source with water coolant by pipeline, the cooling water outlet of circulation fluid water cooler 7 is connected with water coolant backwater source by pipeline, and the pipeline at the cooling water inlet place of circulation fluid water cooler 7 is provided with water coolant water supply control valve 16. By the aperture of controlled cooling model water water supply control valve 16, regulate the temperature of circulation fluid.
Further, jet cleaning tower 2 adopts the split-type structural of band separator, adopts spray to drench, to reach better dust removing effects above the separator of band filler.
The working process of acid purification system that this temperature control self-adaptation joins acid is as follows: it is carried out reverse spray through spray liquid (circulation fluid namely extracted through jet cleaning pump 5) after entering the absorption tower 1 of band filler and drenches and absorb by baking flue gas, the sour gas in flue gas absorbs formation regenerating acid for again utilizing;
Baking flue gas after absorbing enters jet cleaning tower 2, contacts dedusting (metal oxide Dust Capacity in baking flue gas is reduced) with the spray liquid in jet cleaning pump 5;
Baking flue gas after dedusting enters water cooling tower 3, with spray liquid (circulation fluid through the jet cleaning pump 5 extracts) contact heat-exchanging (this process mainly removes the water vapour in baking flue gas) in water cooling tower 3, baking flue gas delivers to vent gas washing system for discharge by the suction of exhaust gas fan 4 after lowering the temperature. Now, the spray liquid in water cooling tower 3 contacts rear direct heat exchange with baking flue gas, and its temperature raises, then again through circulation fluid water cooler 7, by reaching its cooling with the indirect heat exchange of water coolant. Spray liquid after cooling deliver to again in water cooling tower 3 for again with baking flue gas heat exchange.
Temperature (reading temperature by circulation fluid temperature out meter 15) after regulating circulation fluid to cool according to jet cleaning column separator liquidometer 18 and water cooling tower separator liquidometer 19, make it to meet mating of condensation water quantity and absorption tower 1 spray flux, and then controlled cooling model water water supply control valve 16.
Temperature control self-adaptation provided by the invention joins the acid purification system of acid, with the use of water coolant to curing flue gas lower the temperature, to spray liquid recycle, make it to reach by the object of the water vapor condensation curing in flue gas, meet and absorb the requirement that acid gas produces regenerating acid required water, achieve the recovery to HCl, the storage of rinse water and corresponding rinse water supply system can also be saved simultaneously, thus greatly save investment. It is condensed owing to curing water vapors a large amount of in flue gas, the total amount of baking flue gas is reduced greatly, is conducive to the optimization of exhaust gas fan type selecting, saves investment. In addition, jet cleaning tower 2 has been set up, it is possible to removed by iron oxide dusts a large amount of in the middle of baking flue gas so that spraying cooling circulation fluid is cleaned before water cooling tower 3, thus circulation fluid water cooler 7 can not be resulted in blockage etc. and to destroy, it is to increase the work-ing life of circulation fluid water cooler 7. Finally, by arranging water cooling tower 3, to curing, flue gas cool-down makes large quantity of moisture condensation wherein enter circulation fluid, and this process is of value to the removal of the flue gas impurity of system with qualified discharge.
The present invention proposes a kind of control method that temperature control self-adaptation joins the acid purification system of acid further.
In this preferred embodiment, a kind of control method based on above-mentioned acid purification system, comprises the following steps:
It is carried out reverse spray through spray liquid after entering the absorption tower of band filler and drenches and absorb by baking flue gas, forms regenerating acid for again utilizing to be absorbed by the sour gas in flue gas;
Baking flue gas after absorbing enters jet cleaning tower, contacts dedusting with the spray liquid in jet cleaning pump;
Baking flue gas after dedusting enters water cooling tower and it is lowered the temperature by spray liquid heat exchange, and the baking flue gas after cooling delivers to vent gas washing system for discharge by the suction of exhaust gas fan.
Specifically, according to the reading of jet cleaning column separator liquidometer and water cooling tower separator liquidometer, the temperature of adjustment circulation fluid water cooler cooling Posterior circle liquid and water coolant are to water regulating valve, thus realize curing mating of condensation water quantity and absorption tower spray flux in flue gas, and then meet the requirement absorbing acid gas production regenerating acid required water.
These are only the preferred embodiments of the present invention; not thereby the patent scope of the present invention is limited; every equivalent structure conversion utilizing specification sheets of the present invention and accompanying drawing content to do, or directly or indirectly it is used in other relevant technical fields, all it is included in the scope of patent protection of the present invention with reason.
Claims (9)
1. a temperature control self-adaptation joins sour acid purification system, it is characterised in that, comprise the absorption tower, jet cleaning tower and the water cooling tower that connect successively, wherein,
The spray liquid outlet of described jet cleaning tower is connected with the spray liquid entrance of its first spray liquid entrance and absorption tower by pipeline, the spray liquid outlet of described water cooling tower is connected by the 2nd spray liquid entrance of pipeline with its spray liquid entrance and jet cleaning tower, the pipeline in the spray liquid exit of described jet cleaning tower is provided with jet cleaning pump, the pipeline of the spray liquid ingress on described absorption tower is provided with absorption tower spray flow meter and absorption tower spray pouring control valve, the pipeline in the spray liquid exit of described water cooling tower is provided with spraying cooling pump, for circulation fluid water cooler and the circulation fluid temperature out meter of chilling spray liquid, the pipeline of the 2nd spray liquid ingress of described jet cleaning tower is provided with the spray of jet cleaning column separator and drenches control valve, the room, chamber of described jet cleaning tower and water cooling tower is separately installed with jet cleaning column separator liquidometer and water cooling tower separator liquidometer.
2. temperature control self-adaptation as claimed in claim 1 joins the acid purification system of acid, it is characterised in that, pipeline is provided with between the exhanst gas outlet on described absorption tower and the smoke inlet of jet cleaning tower behind absorption tower flue gas pressures meter after flue-gas temperature meter and absorption tower.
3. temperature control self-adaptation as claimed in claim 1 joins the acid purification system of acid, it is characterized in that, pipeline is provided with between the exhanst gas outlet of described jet cleaning tower and the smoke inlet of water cooling tower after jet cleaning tower flue gas pressures meter after flue-gas temperature meter and jet cleaning tower.
4. temperature control self-adaptation as claimed in claim 1 joins the acid purification system of acid, it is characterised in that, the pipeline of the smoke outlet of described water cooling tower is provided with flue-gas temperature meter and exhaust gas fan after water cooling tower.
5. temperature control self-adaptation as claimed in claim 1 joins the acid purification system of acid, it is characterised in that, described circulation fluid water cooler is water cooling equipment.
6. temperature control self-adaptation as claimed in claim 5 joins the acid purification system of acid, it is characterized in that, the cooling water inlet of described circulation fluid water cooler is connected to water source with water coolant by pipeline, the cooling water outlet of described circulation fluid water cooler is connected with water coolant backwater source by pipeline, and the pipeline at the cooling water inlet place of described circulation fluid water cooler is provided with water coolant water supply control valve.
7. temperature control self-adaptation as described in claim 1 to 6 joins the acid purification system of acid, it is characterised in that, described jet cleaning tower adopts the split-type structural of band separator, adopts spray to drench, to reach better dust removing effects above the separator of band filler.
8. join the control method of the acid purification system of acid based on temperature control self-adaptation described in any one in claim 1 to 7 for one kind, it is characterised in that, comprise the following steps:
It is carried out reverse spray through spray liquid after entering the absorption tower of band filler and drenches and absorb by baking flue gas, forms regenerating acid for again utilizing to be absorbed by the sour gas in flue gas;
Baking flue gas after absorbing enters jet cleaning tower, contacts dedusting with the spray liquid in jet cleaning pump;
Baking flue gas after dedusting enters water cooling tower and it is lowered the temperature by spray liquid heat exchange, and the baking flue gas after cooling delivers to vent gas washing system for discharge by the suction of exhaust gas fan.
9. control method as claimed in claim 8, it is characterised in that, according to the reading of jet cleaning column separator liquidometer and water cooling tower separator liquidometer, the temperature of adjustment circulation fluid water cooler cooling Posterior circle liquid and water coolant are to water regulating valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610111383.9A CN105624715B (en) | 2016-02-29 | 2016-02-29 | The acid purification system and its control method of the adaptive complex acid of temperature control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610111383.9A CN105624715B (en) | 2016-02-29 | 2016-02-29 | The acid purification system and its control method of the adaptive complex acid of temperature control |
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| CN105624715B CN105624715B (en) | 2017-12-22 |
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Cited By (1)
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| CN106215646A (en) * | 2016-08-15 | 2016-12-14 | 中冶南方工程技术有限公司 | Spent solution regeneration system, cooling system and regenerated acid production method thereof and cooling means |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106215646A (en) * | 2016-08-15 | 2016-12-14 | 中冶南方工程技术有限公司 | Spent solution regeneration system, cooling system and regenerated acid production method thereof and cooling means |
| CN106215646B (en) * | 2016-08-15 | 2019-04-19 | 中冶南方工程技术有限公司 | Spent solution regeneration system, cooling system and its regenerated acid production method and cooling means |
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| Publication number | Publication date |
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| CN105624715B (en) | 2017-12-22 |
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