CN207276722U - A kind of immersion type stainless steel is without nitric acid acidwashing device - Google Patents
A kind of immersion type stainless steel is without nitric acid acidwashing device Download PDFInfo
- Publication number
- CN207276722U CN207276722U CN201720989732.7U CN201720989732U CN207276722U CN 207276722 U CN207276722 U CN 207276722U CN 201720989732 U CN201720989732 U CN 201720989732U CN 207276722 U CN207276722 U CN 207276722U
- Authority
- CN
- China
- Prior art keywords
- descaling bath
- acid
- stainless steel
- jet pipe
- nitric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
A kind of immersion type stainless steel be the utility model is related to without nitric acid acidwashing device, it includes descaling bath, acid cycle pipeline and circulating pump, some upper jet pipes and some lower jet pipes are equipped with descaling bath, upper jet pipe is located at the middle part or top of descaling bath, lower jet pipe is located at the bottom of descaling bath, the lower end of acid cycle pipeline is connected with the bottom of descaling bath, the upper end of acid cycle pipeline is connected with each upper jet pipe and lower jet pipe, acid cycle pipeline is equipped with circulating pump, and the bottom of descaling bath is communicated with acid solution evacuated tube.The beneficial effects of the utility model are：The acid dip pickle can realize stainless-steel sheet, tubing, wire rod etc. without nitric acid acidwashing, avoid producing the nitrogenous exhaust gas of high pollution and nitrogenous effluent during pickling, when pickling can flexibly control the oxidation-reduction potential of pickling temperature and pickle, easy to use；Watertight sealing mechanism is set at the top of descaling bath, and the acid mist of generation is discharged by special acid mist discharge line, improves production environment, reduce to human injury.
Description
Technical field
Acid-washing stainless steel field is the utility model is related to, refers in particular to a kind of immersion type stainless steel without nitric acid acidwashing device.
Background technology
Stainless steel steel mill at present, acid washing process for stainless steel H2SO4Pickling+(HNO3+ HF) pickling, due to being used during pickling
HNO3, acid cleaning process can produce a large amount of nitrogenous effluents and nitrogenous exhaust gas, and environmental pollution and human body harm are larger.Chinese Ministry of Environmental Protection's pin
Stringent nitrogen pollutant discharge standard has been formulated steel industry, and nitric acid mist highest allows concentration of emission by original 420mg/m3
Fall below 150mg/m3, sewage discharge total nitrogen concentration need to be less than 15mg/L.
At present, the nitrogenous exhaust gas concentration being discharged into during most of steel mill's acid-washing stainless steel in air is more than 500mg/m3, contain
Nitrogen discharge of wastewater concentration is in 1000mg/L or so, in order to meet new environmental requirement, it is necessary to new environmental protection equipment is added, so that
Equipment investment and follow-up operation maintenance cost are added, causes a ton steel the production cost increases 50~200 yuan.
At present, in order to make the nitrogenous effluent of acid cleaning process generation and nitrogenous exhaust gas up to standard, some domestic steel mills draw from foreign countries
, can be without using nitric acid, so as to avoid producing nitrogenous effluent and nitrogenous useless during pickling into new without nitric acid acidwashing technique
Gas, still, has nitration mixture pickling system and does not adapt to new no nitric acid acidwashing technique at present.
Utility model content
In order to solve the above technical problems, the main mesh of the utility model is to provide a kind of immersion type stainless steel without nitric acid acidwashing
Device.
To reach above-mentioned purpose, the technical solution of the utility model application is：A kind of immersion type stainless steel is without nitric acid acidwashing
Device, it includes descaling bath, acid cycle pipeline and circulating pump, some upper jet pipes and some lower sprays is equipped with the descaling bath
Pipe, the upper jet pipe are located at the middle part or top of the descaling bath, and the lower jet pipe is located at the bottom of the descaling bath, the acid
The lower end of liquid circulating line is connected with the bottom of the descaling bath, the upper end of the acid cycle pipeline and each upper jet pipe
And lower jet pipe connects, the acid cycle pipeline is equipped with the circulating pump, and the bottom of the descaling bath is communicated with acid solution row
Blank pipe.
Based on the above technical solutions, the utility model can also do following improvement.
Further, it is additionally provided with heat exchanger on the acid cycle pipeline, the heat exchange coil of the heat exchanger and annealing furnace
Fume afterheat system connectivity.The test temperature scope that pickle can be heated to specify by heat exchanger.
Further, the addition tank for storing hydrogen peroxide solution is further included, the bottom of the addition tank is added by hydrogen peroxide
Pipeline is added to be connected with the acid cycle pipeline.Suitable hydrogen peroxide can be supplemented into descaling bath by adding tank to adjust pickling
The oxidation-reduction potential of liquid.
Further, the open top periphery of the descaling bath is equipped with seal groove, is placed with the seal groove for sealing
The open-topped capping of descaling bath, the side wall upper part of the descaling bath are connected with acid mist discharge line.Water-filling in seal groove,
Play the role of water-stop, prevent the acid mist in descaling bath or pernicious gas from being escaped from the open top of descaling bath.In descaling bath
During ligand acid solution, capping can be removed, it is easy to use with capping is put back to closing again after complete acid solution.
Further, the descaling bath is equipped with the potentiometer for being used for measuring its interior acid solution oxidation-reduction potential.Potentiometer can
The oxidation-reduction potential of acid solution in descaling bath is obtained in real time, to instruct supplement acid solution in due course or hydrogen peroxide solution to ensure the oxygen of acid solution
Change reduction potential within the specific limits.
Further, it is equipped with the descaling bath and is used to fixing the stent that stainless steel treats pickling part, the stent is by stainless steel
Treat that pickling part is fixed between the upper jet pipe and lower jet pipe.Stent will treat that pickling part is fixed between upper and lower jet pipe, be conducive to
Improve pickling efficiency.
Compared with prior art, the beneficial effects of the utility model are：The acid dip pickle can realize stainless-steel sheet, pipe
Material, wire rod etc. without nitric acid acidwashing, avoid producing the nitrogenous exhaust gas of high pollution and nitrogenous effluent during pickling, when pickling can flexibly control
The oxidation-reduction potential of pickling temperature and pickle, it is easy to use；Watertight sealing mechanism is set at the top of descaling bath, the acid mist of generation by
Special acid mist discharge line discharge, improves production environment, reduces to human injury.
Brief description of the drawings
Fig. 1 is structure diagram of the immersion type stainless steel without nitric acid acidwashing device provided by the utility model.
In attached drawing, parts list represented by the reference numerals is as follows：
1. add tank；2. acid mist discharge line；3. dioxygen Water flow control valve；4. circulating pump；5. heat exchanger；6. capping；
7. potentiometer；8. acid cycle pipeline；9. lower jet pipe；Jet pipe on 10.；11. descaling bath；12. seal groove；13. discharging of waste liquid valve.
Embodiment
The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
In the description of the utility model, term " interior ", " outer ", " longitudinal direction ", " transverse direction ", " on ", " under ", " top ", " bottom "
Orientation or position relationship Deng instruction are based on orientation shown in the drawings or position relationship, are for only for ease of and describe this practicality newly
Type rather than require the utility model must be with specific azimuth configuration and operation, therefore be not construed as to the utility model
Limitation.
As shown in Figure 1, the utility model provides a kind of immersion type stainless steel without nitric acid acidwashing device, it includes：
Capping 6 is placed in seal groove 12, by watertight pickling bath 11, prevents acid mist from being overflowed from acid tank 11；
Acid solution in descaling bath 11 is heated to design temperature by heat exchanger 5；
Acid solution in descaling bath 11 is sprayed onto in descaling bath 11 by upper jet tube 10 and bottom jet pipe 9 forms turbulence acid dip；
The oxidation-reduction potential of pickle is measured by potentiometer 7, and is converted into signal and feeds back to hydrogen peroxide flow control
Valve 3, according to the flow for detecting potential height control hydrogen peroxide, makes pickle redox reaction potential be maintained at a certain range
It is interior.Addition tank can add pipeline by hydrogen peroxide and be connected with acid cycle pipeline, can also directly be connected with descaling bath, Huo Zhetong
Cross triple valve to be respectively communicated with descaling bath and acid cycle pipeline, by controlling triple valve that hydrogen peroxide optionally is sent into acid
Liquid circulating line is sent directly into descaling bath.
Acid mist during pickling is discharged by acid mist emission pipeline 2, and the waste liquid in descaling bath 11 is discharged by waste solution channel, is given up
The discharging of waste liquid valve 13 on discharging of waste liquid pipeline is opened when liquid discharges.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modification, equivalent replacement, improvement and so on, should be included in the guarantor of the utility model
Within the scope of shield.
Claims (6)
1. a kind of immersion type stainless steel is without nitric acid acidwashing device, it is characterised in that including descaling bath (11), acid cycle pipeline
(8) and circulating pump (4) some upper jet pipes (10) and some lower jet pipes (9), the upper jet pipe, are equipped with the descaling bath (11)
(10) it is located at the middle part or top of the descaling bath (11), the lower jet pipe (9) is located at the bottom of the descaling bath (11), described
The lower end of acid cycle pipeline (8) is connected with the bottom of the descaling bath (11), the upper end of the acid cycle pipeline (8) with it is every
A upper jet pipe (10) and lower jet pipe (9) connect, and the acid cycle pipeline (8) is equipped with the circulating pump (4), described
The bottom of descaling bath (11) is communicated with acid solution evacuated tube.
2. a kind of immersion type stainless steel according to claim 1 is without nitric acid acidwashing device, it is characterised in that the acid solution is followed
Heat exchanger (5), the heat exchange coil of the heat exchanger (5) and the fume afterheat system connectivity of annealing furnace are additionally provided with endless tube road (8).
3. a kind of immersion type stainless steel according to claim 1 is without nitric acid acidwashing device, it is characterised in that further includes and is used for
The addition tank (1) of hydrogen peroxide solution is stored, pipeline and the acid cycle are added in the bottom of the addition tank (1) by hydrogen peroxide
Pipeline (8) connects.
4. a kind of immersion type stainless steel according to claim 1 is without nitric acid acidwashing device, it is characterised in that the descaling bath
(11) open top periphery is equipped with seal groove (12), is placed with the seal groove (12) for sealing the descaling bath (11)
Open-topped capping (6), the side wall upper part of the descaling bath (11) are connected with acid mist discharge line (2).
5. a kind of immersion type stainless steel according to claim 1 is without nitric acid acidwashing device, it is characterised in that the descaling bath
(11) it is equipped with the potentiometer (7) for being used for measuring its interior acid solution oxidation-reduction potential.
6. a kind of immersion type stainless steel according to any one of claims 1 to 5 is without nitric acid acidwashing device, it is characterised in that
It is equipped with the descaling bath (11) and is used to fix the stent that stainless steel treats pickling part, stainless steel is treated that pickling part is fixed by the stent
Between the upper jet pipe (10) and lower jet pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720989732.7U CN207276722U (en) | 2017-08-08 | 2017-08-08 | A kind of immersion type stainless steel is without nitric acid acidwashing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720989732.7U CN207276722U (en) | 2017-08-08 | 2017-08-08 | A kind of immersion type stainless steel is without nitric acid acidwashing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207276722U true CN207276722U (en) | 2018-04-27 |
Family
ID=61985837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720989732.7U Expired - Fee Related CN207276722U (en) | 2017-08-08 | 2017-08-08 | A kind of immersion type stainless steel is without nitric acid acidwashing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207276722U (en) |
-
2017
- 2017-08-08 CN CN201720989732.7U patent/CN207276722U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204799086U (en) | Glass kiln flue gas desulfurization denitration processing system | |
| CN204799101U (en) | Boiler flue gas desulfurization denitration processing system | |
| CN103979627A (en) | Multistage efficient gas stripping system of ammonia nitrogen wastewater | |
| CN207276722U (en) | A kind of immersion type stainless steel is without nitric acid acidwashing device | |
| CN204352742U (en) | Chemical washing and low temperature plasma coupling processing exhaust gas apparatus | |
| CN218743910U (en) | Tail slag treatment device for preparing hydrogen fluoride | |
| CN207276728U (en) | A kind of stainless steel is continuously without the nitric acid acidwashing circulatory system | |
| CN207276724U (en) | A kind of new type stainless steel. corrosion resistance is without nitric acid acidwashing device | |
| CN206688457U (en) | A kind of chemical emission processing unit | |
| CN211612237U (en) | Pickling bath exhaust treatment device | |
| CN202270453U (en) | Waste gas purifying system in metal acid cleaning | |
| CN212403772U (en) | Turbulent air flotation and electric adsorption synergistic H removal2S and S=Device for measuring the position of a moving object | |
| CN204973533U (en) | Cold rolled stainless steel pickling exhaust purification system | |
| CN202803069U (en) | Device capable of reducing content of acid and iron oxide powder in acid regeneration tail gas | |
| CN206168199U (en) | Desulfurizing tower with hold one's breath and aeration equipment | |
| CN105714324A (en) | Waste water electrolysis oxygen production device | |
| CN206391852U (en) | Biomass boiler nitrogen rejection facility | |
| CN217068296U (en) | Adsorption spraying device based on waste gas in sewage treatment | |
| CN204395751U (en) | CIT workshop acid mist purifying tower | |
| CN220939933U (en) | Denitration and carbon monoxide removal integrated device | |
| CN218357521U (en) | Additional defoaming agent device for desulfurization absorption tower demister washing water pipeline | |
| CN209221860U (en) | A kind of wet flue gas denitration absorbent blowing device | |
| CN212819110U (en) | Anticorrosion flue gas absorption tower convenient to gas-liquid fuses | |
| CN209735316U (en) | Boiler flue gas denitrification equipment | |
| CN217996982U (en) | Biological desulfurization is fenton processing system in coordination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180427 Termination date: 20210808 |