CN205983246U - Feeding mother liquor acidity regulation and controlling system of crystallizer - Google Patents
Feeding mother liquor acidity regulation and controlling system of crystallizer Download PDFInfo
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- CN205983246U CN205983246U CN201620877518.8U CN201620877518U CN205983246U CN 205983246 U CN205983246 U CN 205983246U CN 201620877518 U CN201620877518 U CN 201620877518U CN 205983246 U CN205983246 U CN 205983246U
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Abstract
The utility model discloses feeding mother liquor acidity regulation and controlling system of crystallizer belongs to chemical industry crystallization field. The utility model aims to provide a regulation and controlling system who carries out timely adjustment and control to feeding mother liquor acidity. Including sulphur ammonium mother liquor tube, connecting pipe, aqueous ammonia case, aqueous ammonia conveyer pipe and line mixer, line mixer's mother liquor entry is connected with sulphur ammonium mother liquor tube, mother liquid outlet is connected with the other end of connecting pipe, install the pan feeding control valve on sulphur ammonium mother liquor tube, install discharge control valve on the connecting pipe, aqueous ammonia conveyer pipe one end is connected with aqueous ammonia case, the other end and line mixer's aqueous ammonia entry linkage, be equipped with the defeated entry control valve of the ammonia water metering pump and the aqueous ammonia on aqueous ammonia conveyer pipe. This feeding mother liquor acidity regulation and controlling system of crystallizer, the acidity of transferring timely adjustment sulphur ammonium mother liquor avoids absorbing the too high adverse effect who leads to the fact product quality of mother liquor acidity, improves sulphur ammonium product quality, and, whole governing system simple structure, convenient operation.
Description
Technical field
This utility model belongs to chemical crystallization field, particularly the charging mother solution acidity regulation and control system of crystallizer.
Background technology
Acid wash supporting DTB crystallization produce ammonium sulfate principle be：In pickling tower, divide two sections with containing a certain amount of free acid
Ammonium sulfate liquor the ammonia in coke-stove gas is carried out spraying, absorbs generation ammonium sulfate liquor.Due to acid ammonium sulfate liquor constantly
Absorbing ammonia, wherein (NH4)2SO4Percentage composition can improve constantly, the proportion of ammonium sulfate liquor also improves constantly, and treats Recycling Mother Solution
In groove, the proportion of ammonium sulfate liquor reaches 1.24～1.25g/cm3Afterwards, with pump, ammonium sulfate liquor is delivered to draft tube baffle crystallizer to carry out
Controlledly crystallize.In crystallizer, under vacuum, ammonium sulfate liquor is heated evaporation and is concentrated, ammonium sulfate crystallization,
Then by ammonia sulfate crystal with crystallization pumping toward drying unit, through magma thickening, centrifugation, be dried after be packaged as product.
Research shows：The acidity of ammonium sulfate liquor has certain impact to the width of crystallizing metastable zone.When crystalline mother solution acidity
When being worth too low, obtained crystalline product is elongated six prismatics having cementing trend, even acicular crystal.Cementing trend thin
Long six prismatic crystals have the characteristics that steadiness is poor, easy fragmentation, during magma conveying and product centrifugation, being dried,
Because the friction between crystal grain and crystal grain and between crystal grain and equipment, collision effect cause the granularity of final ammonium sulfate product
Less than normal.In order to obtain, granule is larger, the fuller product of crystal formation, and crystalline mother solution acidity Control is more closed between 1.5～2.0%
Suitable.
Now, the ammonium sulfate liquor that absorptive unit produces directly is delivered to crystallizer with pump, therefore, the mother solution acidity of crystallizer
Place one's entire reliance upon absorption mother liquor acidity Control.In order to ensure the absorption efficiency of ammonia, acid wash supporting DTB crystallization processes require to absorb
Mother solution acidity Control is 2.8～3.2% about；And tradition saturator method produces the absorption mother liquor acidity Control of ammonium sulfate process more
Height, often reaches 4～8%.Therefore, the mother solution acidity after crystallized device evaporation and concentration can uprise, the granule of impact ammonium sulfate products
Degree and particle size distribution.
Utility model content
Technical problem to be solved in the utility model is that the charging mother solution acidity adjustment providing a kind of crystallizer controls system
System, carries out timely adjustment and control to the charging mother solution acidity of crystallizer.
The technical solution adopted in the utility model is：The charging mother solution acidity regulation and control system of crystallizer, including sulphur ammonium
Mother solution pipe and one end are connected to the connecting tube of the feeding mouth of crystallizer, also include ammonia feeding mechanism and pipe-line mixer；
Described pipe-line mixer includes mother solution entrance, ammonia inlet and mother liquor outlet；The mother solution of described pipe-line mixer enters
Mouth is connected with ammonium sulfate liquor pipe；The mother liquor outlet of described pipe-line mixer is connected with the other end of connecting tube；Enter in mother solution
On the ammonium sulfate liquor pipe of mouth side, pan feeding control valve is installed, the connecting tube of mother liquor outlet side is provided with discharging control valve；
Described ammonia feeding mechanism includes ammonia case and ammonia delivery pipe；Described ammonia delivery pipe one end is with ammonia case even
Connect, the other end is connected with the ammonia inlet of pipe-line mixer；
Ammonia dosing pump and ammonia input control valve are provided with ammonia delivery pipe.
Further, including bypass pipe；Described bypass pipe one end is connected to ammonium sulfate liquor pipe, and the other end is connected to connection
Pipe；The junction point of described bypass pipe and ammonium sulfate liquor pipe is located at the front side of pan feeding control valve；Bypass control is provided with bypass pipe
Valve processed.
Further, probe tube is provided with connecting tube.
Further, the junction point of described probe tube and connecting tube is located between discharging control valve and mother liquor outlet.
Further, including hot-water line, described hot-water line includes the first arm and the second arm；Described first arm and mother
Liquid entrance is connected, and described second arm is connected with the ammonia inlet of pipe-line mixer.
Further, described ammonia case is provided with pipeline charging aperture and manual charging aperture.
The beneficial effects of the utility model are：The charging mother solution acidity regulation and control system of this crystallizer, by opening ammonia
Water input control valve, makes the ammonia in ammonia case enter pipe-line mixer by ammonia delivery pipe by ammonia inlet, mixes in pipeline
In clutch, ammonia mixes with through the ammonium sulfate liquor that ammonium sulfate liquor pipe flow enters, just the acidity of adjustable timely adjustment ammonium sulfate liquor, it is to avoid
The too high adverse effect that product quality is caused of absorption mother liquor acidity, improves ammonium sulfate products quality；And, whole regulating system knot
Structure is simple, easy to operate.
Brief description
Fig. 1 is this utility model structural representation.
In figure, crystallizer 1, feeding mouth 101, ammonium sulfate liquor pipe 2, pan feeding control valve 21, discharging control valve 22, line-blending
Device 3, mother solution entrance 31, ammonia inlet 32, mother liquor outlet 33, ammonia case 4, pipeline charging aperture 41, manual charging aperture 42, ammonia are defeated
Send pipe 5, ammonia dosing pump 51, ammonia input control valve 52, hot-water line 6, the first arm 61, the second arm 62, probe tube 7, connect
Adapter 8, bypass pipe 9, bypass control valve (BCV) 91.
Specific embodiment
With reference to the accompanying drawings and examples this utility model is described further as follows：
The charging mother solution acidity regulation and control system of crystallizer, as shown in figure 1, include ammonium sulfate liquor pipe 2 and one end connection
In the connecting tube 8 of the feeding mouth 101 of crystallizer 1, also include ammonia feeding mechanism and pipe-line mixer 3；Described pipe-line mixer 3
Including mother solution entrance 31, ammonia inlet 32 and mother liquor outlet 33；Mother solution entrance 31 and the ammonium sulfate liquor pipe of described pipe-line mixer 3
2 are connected；The mother liquor outlet 33 of described pipe-line mixer 3 is connected with the other end of connecting tube 8；Sulfur in mother solution entrance 31 side
On ammonium mother solution pipe 2, pan feeding control valve 21 is installed, the connecting tube 8 of mother liquor outlet 33 side is provided with discharging control valve 22；Institute
State ammonia feeding mechanism and include ammonia case 4 and ammonia delivery pipe 5；Described ammonia delivery pipe 5 one end is connected with ammonia case 4, another
End is connected with the ammonia inlet 32 of pipe-line mixer 3；Ammonia dosing pump 51 is provided with ammonia delivery pipe 5 and ammonia input controls
Valve 52.
The charging mother solution acidity regulation and control system of this crystallizer, ammonium sulfate liquor flows into through ammonium sulfate liquor pipe 2, is entered by mother solution
Mouth 31 entrance pipe-line mixers 3, flow out through mother liquor outlet 33, flow into crystallizer 1 through connecting tube 8.When flowing into through ammonium sulfate liquor pipe 2
Ammonium sulfate liquor acidity too high when, need adjust ammonium sulfate liquor acidity, then, just open ammonia input control valve 52, make
Ammonia in ammonia case 4 enters pipe-line mixer 3 by ammonia delivery pipe 5 by ammonia inlet 32, ammonia in pipe-line mixer 3
Mix with through the ammonium sulfate liquor that ammonium sulfate liquor pipe 2 flows into, adjust the acidity of ammonium sulfate liquor, finally, the sulphur ammonium adjusting acidity is female
Liquid, that is, feed mother solution and flow out through mother liquor outlet 33.Ammonia dosing pump 51 is used for the ammonia that metering inputs to pipe-line mixer 3
Amount.
The charging mother solution acidity regulation and control system of this crystallizer, can enter to the acidity of the ammonium sulfate liquor entering crystallizer 1
Row timely adjustment and control, it is to avoid the too high adverse effect that product quality is caused of absorption mother liquor acidity, improve ammonium sulfate products matter
Amount；And, whole regulating system structure is simple, easy to operate.
In order to also ammonium sulfate liquor can be inputted to crystallizer 1 during pipe-line mixer 3 fault, ensure the normal of crystallizer 1
Produce.Preferably, including bypass pipe 9；Described bypass pipe 9 one end is connected to ammonium sulfate liquor pipe 2, and the other end is connected to connecting tube 8；
The junction point of described bypass pipe 9 and ammonium sulfate liquor pipe 2 is located at the front side of pan feeding control valve 21；Bypass pipe 9 is provided with bypass
Control valve 91.Bypass control valve (BCV) 91 is used for controlling bypass pipe 9 to work.
The acidity value of ammonium sulfate liquor entering crystallizer 1 for ease of sample analysis is it is preferred that be provided with connecting tube 8
Probe tube 7.
In connecting tube 8, the closer to the position of mother liquor outlet 33, the result of sampling detection more can accurately reflect tight line-blending
The acidity value of the mixed mother solution of device 3, therefore it is preferred that described probe tube 7 is located at discharging control valve with the junction point of connecting tube 8
Between 22 and mother liquor outlet 33.
In order to clean the pipe-line mixer after use 3 it is preferred that including hot-water line 6, described hot-water line 6 includes first
Pipe 61 and the second arm 62；Described first arm 61 is connected with mother solution entrance 31, described second arm 62 and pipe-line mixer 3
Ammonia inlet 32 be connected.
Preferably, described ammonia case 4 is provided with pipeline charging aperture 41 and manual charging aperture 42.Adjust the ammonia of charging mother solution acidity
Water voluntarily can be produced using ammonia process units it is also possible to direct buy；Pipeline charging aperture 41 is used for receiving ammonia production dress
Put the ammonia of output；Manual charging aperture 42 is used for for outsourcing ammonia pouring into ammonia case 4.
Claims (6)
1. the charging mother solution acidity regulation and control system of crystallizer, is connected to crystallizer (1) including ammonium sulfate liquor pipe (2) and one end
Feeding mouth (101) connecting tube (8) it is characterised in that：Also include ammonia feeding mechanism and pipe-line mixer (3)；
Described pipe-line mixer (3) includes mother solution entrance (31), ammonia inlet (32) and mother liquor outlet (33)；Described line-blending
The mother solution entrance (31) of device (3) is connected with ammonium sulfate liquor pipe (2)；The mother liquor outlet (33) of described pipe-line mixer (3) and company
The other end of adapter (8) is connected；Pan feeding control valve (21) is provided with the ammonium sulfate liquor pipe (2) of mother solution entrance (31) side,
Discharging control valve (22) is provided with the connecting tube (8) of mother liquor outlet (33) side；
Described ammonia feeding mechanism includes ammonia case (4) and ammonia delivery pipe (5)；Described ammonia delivery pipe (5) one end and ammonia
Case (4) connects, and the other end is connected with the ammonia inlet (32) of pipe-line mixer (3)；
Ammonia dosing pump (51) and ammonia input control valve (52) are provided with ammonia delivery pipe (5).
2. crystallizer as claimed in claim 1 charging mother solution acidity regulation and control system it is characterised in that：Including bypass pipe
(9)；Described bypass pipe (9) one end is connected to ammonium sulfate liquor pipe (2), and the other end is connected to connecting tube (8)；Described bypass pipe (9)
It is located at the front side of pan feeding control valve (21) with the junction point of ammonium sulfate liquor pipe (2)；Bypass pipe (9) is provided with bypass control valve (BCV)
(91).
3. crystallizer as claimed in claim 1 or 2 charging mother solution acidity regulation and control system it is characterised in that：Connecting
It is provided with probe tube (7) on pipe (8).
4. crystallizer as claimed in claim 3 charging mother solution acidity regulation and control system it is characterised in that：Described probe tube
(7) and connecting tube (8) junction point be located between discharging control valve (22) and mother liquor outlet (33).
5. crystallizer as claimed in claim 1 or 2 charging mother solution acidity regulation and control system it is characterised in that：Including heat
Water pipe (6), described hot-water line (6) includes the first arm (61) and the second arm (62)；Described first arm (61) is entered with mother solution
Mouth (31) is connected, and described second arm (62) is connected with the ammonia inlet (32) of pipe-line mixer (3).
6. crystallizer as claimed in claim 1 or 2 charging mother solution acidity regulation and control system it is characterised in that：Described ammonia
Water tank (4) is provided with pipeline charging aperture (41) and manual charging aperture (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877518.8U CN205983246U (en) | 2016-08-12 | 2016-08-12 | Feeding mother liquor acidity regulation and controlling system of crystallizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877518.8U CN205983246U (en) | 2016-08-12 | 2016-08-12 | Feeding mother liquor acidity regulation and controlling system of crystallizer |
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| Publication Number | Publication Date |
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| CN205983246U true CN205983246U (en) | 2017-02-22 |
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ID=59976856
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|---|---|---|---|
| CN201620877518.8U Active CN205983246U (en) | 2016-08-12 | 2016-08-12 | Feeding mother liquor acidity regulation and controlling system of crystallizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285154A (en) * | 2017-12-29 | 2018-07-17 | 攀钢集团西昌钢钒有限公司 | Precipitation ammonium sulfate device for making |
| CN108658096A (en) * | 2017-03-31 | 2018-10-16 | 上海宝钢化工有限公司 | Ammonium sulfate production method using coke oven gas as raw material |
-
2016
- 2016-08-12 CN CN201620877518.8U patent/CN205983246U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658096A (en) * | 2017-03-31 | 2018-10-16 | 上海宝钢化工有限公司 | Ammonium sulfate production method using coke oven gas as raw material |
| CN108658096B (en) * | 2017-03-31 | 2021-11-05 | 宝武炭材料科技有限公司 | Ammonium sulfate production method using coke oven gas as raw material |
| CN108285154A (en) * | 2017-12-29 | 2018-07-17 | 攀钢集团西昌钢钒有限公司 | Precipitation ammonium sulfate device for making |
| CN108285154B (en) * | 2017-12-29 | 2021-08-17 | 攀钢集团西昌钢钒有限公司 | Device is prepared to heavy vanadium ammonium sulfate |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |