CN206762891U - A kind of discarded SCR denitration acidolysis pilot-plant - Google Patents
A kind of discarded SCR denitration acidolysis pilot-plant Download PDFInfo
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- CN206762891U CN206762891U CN201720493365.1U CN201720493365U CN206762891U CN 206762891 U CN206762891 U CN 206762891U CN 201720493365 U CN201720493365 U CN 201720493365U CN 206762891 U CN206762891 U CN 206762891U
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- kettle
- steam
- acidolysis
- pilot
- scr denitration
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Abstract
It the utility model is related to a kind of discarded SCR denitration acidolysis pilot-plant, the device includes kettle, exhaust outlet and charging aperture are provided with the top of the kettle, the kettle is internally provided with steam pipe coil and compressed air hose, the compressed air hose extends to the bottom of the kettle, the steam pipe coil is provided with steam inlet and steam (vapor) outlet, and the steam inlet and steam (vapor) outlet extend to the exterior upper portion of kettle, and the bottom of the kettle is provided with discharge port.The utility model is good to the acidolysis effect for discarding SCR denitration, is heated by introducing steam, there is provided the energy needed for material reaction, so as to improve acidolysis efficiency, improve the Ti rate of recovery.
Description
Technical field
The utility model belongs to chemical reaction equipment technical field, is related to a kind of discarded SCR denitration acidolysis pilot scale
Device.
Background technology
SCR dead catalyst contains the TiO of 80% and the above2Carrier, if SCR dead catalyst is handled using land-fill method, this
The waste of large area land resource can be caused, will also result in secondary environmental pollution, meanwhile, the TiO in SCR dead catalyst2Have
Very high recycling value, the high added value comprehensive reutilization technical research of SCR dead catalyst are significant.With sulfuric acid process
Titanium white production raw material titanium ore is compared, and because Fe impurity contents are less in SCR dead catalyst, it is incomplete with sulfuric acid reaction, leads
Cause acidolysis rate is low, and the Ti rate of recovery is not high, it is necessary to designs trial assembly in a kind of discarded SCR denitration acidolysis of acidolysis efficiency high
Put.
The content of the invention
In view of this, the purpose of this utility model is to provide a kind of discarded SCR denitration simple in construction, acidolysis efficiency high and urged
Agent acidolysis pilot-plant.
Therefore, the utility model provides a kind of discarded SCR denitration acidolysis pilot-plant, including kettle, the kettle
Exhaust outlet and charging aperture are provided with the top of body, the kettle is internally provided with steam pipe coil and compressed air hose, the pressure
Contracting air hose extends to the bottom of the kettle, and the steam pipe coil is provided with steam inlet and steam (vapor) outlet, and the steam enters
Mouth and steam (vapor) outlet extend to the exterior upper portion of kettle, and the bottom of the kettle is provided with discharge port.
As an improvement structure is arranged on the inwall of kettle the steam pipe coil in the shape of a spiral.
As an improvement the compressed air hose is provided with compressed air inlet, set at the compressed air inlet
Stop valve.
As an improvement butterfly valve is set at the steam inlet.
As an improvement ball valve is set at the discharge port.
As an improvement bearing is set outside the kettle.
The beneficial effects of the utility model are：The utility model is good to the acidolysis effect for discarding SCR denitration, steams
Vapour constantly carries out heat exchange by steam pipe coil to reaction mass, temperature needed for material reaction is maintained, by introducing steam
Heating, there is provided the energy needed for material reaction, so as to improve acidolysis efficiency, improve the Ti rate of recovery.It is new using this practicality
The device of type carries out the acidolysis of discarded SCR denitration, and following technique effect can be achieved：After material being put into pilot-plant,
By ending the appropriate air supply of valve regulation, compressed air hose is sent into air to bottom of device, in the strength of compressed air
Under stirring, discarded SCR powders are made to be sufficiently mixed uniformly with the concentrated sulfuric acid, now, the heat of dilution of the concentrated sulfuric acid is not enough to trigger material master
Reaction occurs, and appropriate quantity of steam need to be adjusted by butterfly valve, constantly heat exchange is carried out to reaction mass through steam pipe coil, when main anti-
After should starting, quantity of steam, temperature when maintenance main reaction starts are adjusted again, and stops compressed air stirring, be incubated instead
Answer certain time, gas is discharged into exhaust treatment system through steam vent caused by reaction.After reaction terminates, stop steam heating, from
50~60 DEG C are so cooled to, and opening stop valve adjusts appropriate air supply, under compressed air stirring, is added through charging aperture
A certain amount of leaching water, solid formation is dissolved, the leachate that solid formation obtains after being dissolved completely, enters press filtration work through ball valve control
Sequence prepares titanium liquid.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing illustrates：
Fig. 1 is discarded SCR denitration acidolysis pilot-plant structure chart.
Description of reference numerals：1 kettle；2 steam pipe coils；3 charging apertures；4 compressed air hoses；5 exhaust outlets；6 discharge ports；7 steam
Vapor outlet；8 steam inlets；9 compressed air inlets；10 bearings；11 butterfly valves；12 stop valves；13 ball valves.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in figure 1, a kind of discarded SCR denitration acidolysis pilot-plant, including kettle 1, the top of kettle 1 are set
There are exhaust outlet 5 and charging aperture 3, kettle 1 is internally provided with steam pipe coil 2 and compressed air hose 4, and the compressed air hose 4 extends
To the bottom of the kettle 1, compressed air hose 4 has compressed air inlet 9, and wherein compressed air inlet 9 extends to kettle 1
Exterior upper portion, stop valve 12 is set at compressed air inlet 9, steam inlet 8 and steam (vapor) outlet are provided with the steam pipe coil 2
7, wherein steam inlet 8 and steam (vapor) outlet 7 extends to the exterior upper portion of kettle 1, and the steam pipe coil 2 in the shape of a spiral arrange by structure
On the inwall of kettle, butterfly valve 11 is set, and the bottom of the kettle 1 is provided with discharge port 6, set at discharge port 6 at steam inlet 8
Place valve 13, the outside of kettle 1 set bearing 10.
Operation principle of the present utility model is as follows：After putting into material into kettle 1 by charging aperture 3, pass through stop valve 12
Appropriate air supply is adjusted, compressed air hose 4 is sent into air into kettle 1, under the strong stirring of compressed air, makes to give up
Abandon SCR powders to be sufficiently mixed uniformly with the concentrated sulfuric acid, now, the heat of dilution of the concentrated sulfuric acid is not enough to trigger material main reaction to occur, and needs
Appropriate quantity of steam is adjusted by butterfly valve 11, heat exchange constantly is carried out to reaction mass through steam pipe coil 2, when main reaction starts
Afterwards, quantity of steam, temperature when maintenance main reaction starts are adjusted again by butterfly valve 11, and closes stop valve 12, it is empty to stop compression
Gas agitating, insulation reaction certain time is carried out, gas is discharged into exhaust treatment system through exhaust outlet 5 caused by reaction.Reaction terminates
Afterwards, butterfly valve 11 is closed, stops steam heating, naturally cools to 50~60 DEG C, and opening stop valve 12, adjust appropriate compressed air
Amount, under compressed air stirring, a certain amount of leaching water is added through charging aperture 3, solid formation is dissolved, after solid formation is dissolved completely
Obtained leachate, controlled through ball valve 13, titanium liquid is prepared into press filtration process.
Embodiment 1
Added into Fig. 1 shown devices compared to 90% concentrated sulfuric acid that waste catalyst volume ratio is 2.0 times, open cut-off
The appropriate air supply of valve regulation, under compressed air stirring, waste catalyst is put into, after stirring 30min, is passed through by butterfly valve
Steam, after material main reaction starts, stop air stirring, and adjust quantity of steam, temperature when maintenance main reaction starts, reaction
7~8 hours, stop steam heating, naturally cool to 50~60 DEG C, and opening stop valve adjusts appropriate air supply, is pressing
Under contracting air stirring, added through charging aperture compared to the leaching water that waste catalyst volume ratio is 4.0 times, dissolve solid formation, Gu
The leachate that phase thing obtains after being dissolved completely, controlled through ball valve into press filtration process and prepare titanium liquid, TiO2The rate of recovery is
80.37%.
Embodiment 2
The device that the present embodiment uses is different from embodiment 1, and difference is, is not provided with steam pipe coil 8 and butterfly valve 11, to dress
Put middle add and adjust appropriate compressed air compared to 90% concentrated sulfuric acid that waste catalyst volume ratio is 2.0 times, opening stop valve
Amount, under compressed air stirring, waste catalyst is put into, is stirred 7~8 hours, is added by charging aperture compared to waste catalyst
Agent volume ratio is 4.0 times of leaching water, dissolves solid formation, the leachate that solid formation obtains after being dissolved completely, is controlled through ball valve
Titanium liquid, TiO are prepared into press filtration process2The rate of recovery is 34.14%.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model has been described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The scope of restriction.
Claims (6)
1. a kind of discarded SCR denitration acidolysis pilot-plant, including kettle, it is characterised in that set at the top of the kettle
Exhaust outlet and charging aperture are equipped with, the kettle is internally provided with steam pipe coil and compressed air hose, and the compressed air hose prolongs
The bottom of the kettle is extended, the steam pipe coil is provided with steam inlet and steam (vapor) outlet, and the steam inlet and steam go out
Mouth extends to the exterior upper portion of kettle, and the bottom of the kettle is provided with discharge port.
A kind of 2. discarded SCR denitration acidolysis pilot-plant as claimed in claim 1, it is characterised in that the steam
Structure is arranged on the inwall of kettle coil pipe in the shape of a spiral.
A kind of 3. discarded SCR denitration acidolysis pilot-plant as claimed in claim 1, it is characterised in that the compression
Air hose is provided with compressed air inlet, and stop valve is set at the compressed air inlet.
A kind of 4. discarded SCR denitration acidolysis pilot-plant as claimed in claim 1, it is characterised in that the steam
Entrance sets butterfly valve.
A kind of 5. discarded SCR denitration acidolysis pilot-plant as claimed in claim 1, it is characterised in that the discharging
Ball valve is set at mouthful.
A kind of 6. discarded SCR denitration acidolysis pilot-plant as claimed in claim 1, it is characterised in that the kettle
Outside sets bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720493365.1U CN206762891U (en) | 2017-05-05 | 2017-05-05 | A kind of discarded SCR denitration acidolysis pilot-plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720493365.1U CN206762891U (en) | 2017-05-05 | 2017-05-05 | A kind of discarded SCR denitration acidolysis pilot-plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206762891U true CN206762891U (en) | 2017-12-19 |
Family
ID=60649252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720493365.1U Active CN206762891U (en) | 2017-05-05 | 2017-05-05 | A kind of discarded SCR denitration acidolysis pilot-plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206762891U (en) |
-
2017
- 2017-05-05 CN CN201720493365.1U patent/CN206762891U/en active Active
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