CN205839134U - A kind of device reducing cold-rolling pickling acid consumption - Google Patents
A kind of device reducing cold-rolling pickling acid consumption Download PDFInfo
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- CN205839134U CN205839134U CN201620801541.9U CN201620801541U CN205839134U CN 205839134 U CN205839134 U CN 205839134U CN 201620801541 U CN201620801541 U CN 201620801541U CN 205839134 U CN205839134 U CN 205839134U
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- acid
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- bearing wastewater
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Abstract
This utility model relates to a kind of device reducing cold-rolling pickling acid consumption, including acid regeneration device, described acid regeneration device includes that the roaster, cyclone separator, preconcentrator, absorption tower and scrubbing tower, preconcentrator and the absorption tower that are sequentially connected with by pipeline additionally connect regenerated acid tank；Roaster top acid pickle entrance connects the acid pickle pipeline that cold-rolling pickling workshop section comes；Described acid pickle pipeline connects the acid pickle spray equipment on scrubbing tower by acid pickle spray piping, connect the acid-bearing wastewater spray equipment on absorption tower by acid-bearing wastewater spray piping, acid pickle spray piping and acid-bearing wastewater spray piping set spray pump one, spray pump two respectively.The acid pickle that pickling zone is produced by this utility model introduces and replaces demineralized water to carry out absorbing spray and wash spray in acid regeneration device, acid pickle recycles in acid regeneration device can increase the response rate of regenerated acid, also demineralized water and usage amount containing aqueous slkali can be greatly decreased simultaneously, thus reduce production cost.
Description
Technical field
This utility model relates to cold rolling acid regeneration technical field, particularly relates to a kind of dress reducing cold-rolling pickling acid consumption
Put.
Background technology
Steel plate can generate iron scale at surface of steel plate after rolling, needs by acid cleaning process, iron scale to be removed,
Therefore pickling is requisite one important step during cold-reduced sheet produces；Acid regeneration is exactly the spent acid produced in pickling process
Be regenerated as can again with hydrochloric acid, the most also can produce highly purified brown iron oxide, be used for manufacturing hard disc of computer, soft
Dish etc..
The most conventional acid regeneration device includes roaster, cyclone separator, preconcentrator, absorption tower and scrubbing tower,
HCL in produced flue gas during wherein absorption tower uses the method absorption acid regeneration spraying demineralized water, scrubbing tower uses spray
Tail gas is washed by the method drenching demineralized water.Pickling zone needs to consume a large amount of acid, and acid-bearing wastewater finally needs substantial amounts of containing
In aqueous slkali and after could discharge, and cold rolling acid regeneration process also needs to substantial amounts of demineralized water, causes production cost high.
Summary of the invention
This utility model provides a kind of device reducing cold-rolling pickling acid consumption, is drawn by the acid pickle that pickling zone produces
Entering to replace in acid regeneration device demineralized water to carry out absorbing spray and wash spray, acid pickle recycles in acid regeneration device can
Increase the response rate of regenerated acid, demineralized water and usage amount containing aqueous slkali also can be greatly decreased simultaneously, thus reduce production cost.
In order to achieve the above object, this utility model realizes by the following technical solutions:
A kind of device reducing cold-rolling pickling acid consumption, including acid regeneration device, described acid regeneration device includes by pipe
Roaster, cyclone separator, preconcentrator, absorption tower and scrubbing tower, preconcentrator and absorption tower that road is sequentially connected with are additionally
Connect regenerated acid tank；Roaster top acid pickle entrance connects the acid pickle pipeline that cold-rolling pickling workshop section comes；Described acid pickle pipe
Road connects the acid pickle spray equipment on scrubbing tower by acid pickle spray piping, is connected by acid-bearing wastewater spray piping and absorbs
Spray pump one, spray is set respectively on acid-bearing wastewater spray equipment on tower, acid pickle spray piping and acid-bearing wastewater spray piping
Pump two.
Described acid-bearing wastewater spray piping is provided with acid-bearing wastewater storage tank, and acid-bearing wastewater tank top sets liquidometer and acid is dense
Degree analyser, acid-bearing wastewater storage tank side is provided with supplementary acid solution entrance and supplementary water inlet, and acid-bearing wastewater storage tank additionally connects again
Raw acid tank.
Described acid pickle spray piping, acid-bearing wastewater spray piping and acid-bearing wastewater storage tank and the connection pipeline of regenerated acid tank
Upper set valve respectively.Described spray pump one and spray pump two are all provided with stand-by pump, and stand-by pump is installed in the parallel branch of main pipeline.
Described acid pickle spray equipment is respectively provided at top and the middle part of scrubbing tower, and acid-bearing wastewater spray equipment is respectively provided at
The top on absorption tower and middle part.
Compared with prior art, the beneficial effects of the utility model are:
Being introduced by the acid pickle produced by pickling zone replaces demineralized water to carry out absorbing spray and washing in acid regeneration device
Washing spray, acid pickle recycles in acid regeneration device can increase the response rate of regenerated acid, desalination also can be greatly decreased simultaneously
Water and the usage amount containing aqueous slkali, thus reduce production cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is certain factory acid in February, 2015 in May, 2016 consumption cartogram in this utility model embodiment.
In figure: 1. acid pickle pipeline 2. roaster 3. cyclone separator 4. preconcentrator 5. absorption tower 6. is washed
Tower 7. regenerated acid tank 8. acid pickle spray piping 9. spray pump 1 acid-bearing wastewater spray piping 11. spray pump 2 12.
Acid-bearing wastewater storage tank 13. liquidometer 14. acid concentration analyser 15. valve
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described further:
As it is shown in figure 1, a kind of device reducing cold-rolling pickling acid consumption described in the utility model, including acid regeneration device,
Roaster 2 that described acid regeneration device includes being sequentially connected with by pipeline, cyclone separator 3, preconcentrator 4, absorption tower 5 and
Scrubbing tower 6, preconcentrator 4 and absorption tower 5 additionally connect regenerated acid tank 7；Roaster 2 top acid pickle entrance connects cold-rolling pickling
The acid pickle pipeline 1 that workshop section comes；Described acid pickle pipeline 1 connects the acid pickle on scrubbing tower 6 by acid pickle spray piping 8 and sprays
Shower device, connects the acid-bearing wastewater spray equipment on absorption tower 5, acid pickle spray piping 8 by acid-bearing wastewater spray piping 10
With set spray pump 1, spray pump 2 11 on acid-bearing wastewater spray piping 10 respectively.
Described acid-bearing wastewater spray piping 10 is provided with acid-bearing wastewater storage tank 12, and acid-bearing wastewater storage tank 12 top sets liquidometer
13 and acid concentration analyser 14, acid-bearing wastewater storage tank 12 side is provided with supplementary acid solution entrance and supplementary water inlet, and acid-bearing wastewater stores up
Tank 12 additionally connects regenerated acid tank 7.
Described acid pickle spray piping 8, acid-bearing wastewater spray piping 10 and acid-bearing wastewater storage tank 12 and the company of regenerated acid tank 7
Valve 15 is set respectively on adapter road.
Described spray pump 1 and spray pump 2 11 are all provided with stand-by pump, and stand-by pump is installed in the parallel branch of main pipeline.
Described acid pickle spray equipment is respectively provided at top and the middle part of scrubbing tower 6, and acid-bearing wastewater spray equipment sets respectively
Top and middle part on absorption tower 5.
When using acid regeneration device, the iron scale on steel plate is dissolved by hydrochloric acid solution, contains in simultaneous oxidation iron sheet
Other element such as Si, Cr, Mn, AI, Mg, P, C dissolve after also go in spent acid, spent acid send after regeneration, with ferrum and Cl-Again
Being transformed into free hydrochloric acid, ferrum is also with the isolated in form of brown iron oxide out simultaneously.
The reaction equation of regeneration of hydrochloric acid is:
FeCl2+2H2O+1/2O2=Fe2O3+4HCl；
2FeCl3+3H2O=Fe2O3+6HCl；
The reaction equation that ferrum oxide dissolves is:
Fe2O3+ 6HCl=2FeCl3+3H2O；
Fe3O4+ 8HCl=2FeCl3+FeCl2+4H2O；
FeO+2HCl=FeCl2+H2O；
The brown iron oxide major part generated is down at the bottom of roaster, and small part is calcined gas and takes out of, at cyclone separator
In be separated and return roaster.Roasting gas is by entering absorption tower after cyclone separator and preconcentrator, from containing acid
The acid-bearing wastewater that wastewater storage tank is extracted out sprays into from top, absorption tower, washs with roasting gas counter current contacting, inhales through absorption tower
Receiving the roasting gas after HCL and introduced scrubbing tower by absorbing tower top through smoke exhaust fan, the acid pickle drawn from acid pickle pipeline is being washed
Washing top of tower to spray as cleaning mixture, arrange in air after flue gas is scrubbed, the washings in scrubbing tower can also be used for absorption tower
Spray.
Following example are implemented under premised on technical solutions of the utility model, give detailed embodiment
With concrete operating process, but protection domain of the present utility model is not limited to following embodiment.Side used in following embodiment
Method is conventional method if no special instructions.
[embodiment]
In February, 2015, to December, is provided without the consumption of the acid cleaning process acid before device described in the utility model as shown in table 1；
Table 1
| Unit | In February, 2015 | March | April | May | June | July | August | JIUYUE | October | November | December |
| A13 | 4.19 | 4.68 | 3.82 | 3.5 | 3.5 | 4.69 | 4.16 | 3.77 | 3.78 | 4.16 | 3.69 |
| B11 | 4.95 | 5.18 | 8.22 | 6.61 | 5.62 | 4.84 | 4.26 | 4.74 | 5.39 | 4.38 | 3.88 |
In January, 2016 to May, use the acid cleaning process acid consumption after this utility model as shown in table 2
Table 2
| Unit | In January, 2016 | February | March | April | May |
| A13 | 2.27 | 2.79 | 2.25 | 2.37 | 2.58 |
| B11 | 2.66 | 2.7 | 2.49 | 2.57 | 2.15 |
The acid consumption cartogram in this factory in February, 2015 in May, 2016 is as shown in Figure 2.
The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not
Being confined to this, any those familiar with the art is in the technical scope that this utility model discloses, according to this practicality
Novel technical scheme and conceive equivalent or change in addition, all should contain within protection domain of the present utility model.
Claims (5)
1. can reduce a device for cold-rolling pickling acid consumption, including acid regeneration device, described acid regeneration device includes passing through pipeline
The roaster, cyclone separator, preconcentrator, absorption tower and scrubbing tower, preconcentrator and the absorption tower that are sequentially connected with additionally connect
Connect regenerated acid tank；Roaster top acid pickle entrance connects the acid pickle pipeline that cold-rolling pickling workshop section comes；It is characterized in that, described
Acid pickle pipeline connects the acid pickle spray equipment at scrubbing tower top by acid pickle spray piping, by acid-bearing wastewater shower
Spray is set respectively on acid-bearing wastewater spray equipment on connection absorption tower, road, acid pickle spray piping and acid-bearing wastewater spray piping
Pump one, spray pump two.
A kind of device reducing cold-rolling pickling acid consumption the most according to claim 1, it is characterised in that described acid-bearing wastewater
Spray piping is provided with acid-bearing wastewater storage tank, and acid-bearing wastewater tank top sets liquidometer and acid concentration analyser, and acid-bearing wastewater stores up
Tank side is provided with supplementary acid solution entrance and supplementary water inlet, and acid-bearing wastewater storage tank additionally connects regenerated acid tank.
A kind of device reducing cold-rolling pickling acid consumption the most according to claim 1, it is characterised in that described acid pickle sprays
Shower pipe road, acid-bearing wastewater spray piping and acid-bearing wastewater storage tank set valve on the connection pipeline of regenerated acid tank respectively.
A kind of device reducing cold-rolling pickling acid consumption the most according to claim 1, it is characterised in that described spray pump one
Being all provided with stand-by pump with spray pump two, stand-by pump is installed in the parallel branch of main pipeline.
A kind of device reducing cold-rolling pickling acid consumption the most according to claim 1, it is characterised in that described acid pickle liquid
Spray equipment is respectively provided at top and the middle part of scrubbing tower, acid-bearing wastewater spray equipment be respectively provided at absorption tower top and in
Portion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620801541.9U CN205839134U (en) | 2016-07-28 | 2016-07-28 | A kind of device reducing cold-rolling pickling acid consumption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620801541.9U CN205839134U (en) | 2016-07-28 | 2016-07-28 | A kind of device reducing cold-rolling pickling acid consumption |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330495A (en) * | 2017-06-28 | 2018-07-27 | 柳州钢铁股份有限公司 | Remove the method and its circulatory system of the crystallization of acid purification system feeding line |
| CN112620232A (en) * | 2020-12-10 | 2021-04-09 | 华菱安赛乐米塔尔汽车板有限公司 | Process method for reducing scaling of acid regeneration ferrous chloride washing tower filler |
-
2016
- 2016-07-28 CN CN201620801541.9U patent/CN205839134U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330495A (en) * | 2017-06-28 | 2018-07-27 | 柳州钢铁股份有限公司 | Remove the method and its circulatory system of the crystallization of acid purification system feeding line |
| CN112620232A (en) * | 2020-12-10 | 2021-04-09 | 华菱安赛乐米塔尔汽车板有限公司 | Process method for reducing scaling of acid regeneration ferrous chloride washing tower filler |
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