CN205474036U - Hysteresis quality pH controlling means - Google Patents
Hysteresis quality pH controlling means Download PDFInfo
- Publication number
- CN205474036U CN205474036U CN201620129076.9U CN201620129076U CN205474036U CN 205474036 U CN205474036 U CN 205474036U CN 201620129076 U CN201620129076 U CN 201620129076U CN 205474036 U CN205474036 U CN 205474036U
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- China
- Prior art keywords
- pipeline
- acid solution
- reactor
- solution
- acidizing fluid
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- 230000001276 controlling effect Effects 0.000 title abstract description 4
- 239000002253 acid Substances 0.000 claims description 42
- 239000000376 reactant Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000012295 chemical reaction liquid Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 18
- 229910052759 nickel Inorganic materials 0.000 description 9
- 239000003792 electrolyte Substances 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 235000011149 sulphuric acid Nutrition 0.000 description 5
- 239000001117 sulphuric acid Substances 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 2
- 238000005363 electrowinning Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101710009096 PLC6 Proteins 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003111 delayed Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000029219 regulation of pH Effects 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 230000000699 topical Effects 0.000 description 1
Abstract
The utility model discloses a hysteresis quality pH controlling means, the device include reation kettle, are equipped with the level gauge in the reation kettle, and reation kettle's top is equipped with reaction liquid input pipeline and acidizing fluid interpolation pipeline, and the acidizing fluid is added the pipeline and is linked to each other with the acidizing fluid elevated tank, and the reation kettle bottom is equipped with solution output pipeline, and the acidizing fluid is equipped with acidizing fluid flow control valve on adding the pipeline, and solution output pipeline's end is equipped with the pH meter, and pH meter, acidizing fluid flow control valve, level gauge link to each other with PLC. The utility model provides a problem of local solution mixes in the production process of decoppering agent because in the fluctuation of pipeline flow, reation kettle the insufficient and pH control hysteresis that causes for dynamic system, can realize the flow according to the change accurate control acidizing fluid interpolation of liquid level among the reation kettle, reach the purpose of accurate controlled reaction solution pH value.
Description
Technical field
This utility model belongs to nickel electrowinning production technical field, is specifically related to a kind of hysteresis quality pH and controls device.
Background technology
In the production process of nickel electrowinning, nickel electrolyte needs to carry out copper removal process, and during copper-stripping reaction due to system pH on reaction effect play conclusive impact, it requires that the pH value of system maintains constant level, therefore need the pH of nickel electrolyte is accurately controlled before copper-stripping reaction is carried out.The pH value that nickel electrolyte crosses Cheng Qian in entrance copper-stripping reaction is higher, and pH is adjusted by general employing sulphuric acid.In actual production technique, on the one hand being affected by upper one filter progress, it is not stationary value that the nickel electrolyte flow of Cheng Qian pH regulator reactor is crossed in entrance copper-stripping reaction, and liquid outlet quantity is steady state value, the change of system flow makes the regulation of pH there is hysteresis quality, which increases the control difficulty of pH；On the other hand the production of pH regulator reactor is a continuous process, and except pH regulator reactor exists liquid while feed liquor, and the volume ratio of pH regulator reactor is relatively big, and the hysteresis quality of reaction system is relatively big, further increases the control difficulty of pH.For these reasons, the pH entering copper-stripping reaction liquid is difficult to control at required steady state value.Taper into owing to entering the flow of the nickel electrolyte of pH regulator reactor, therefore, there is not full packages phenomenon for carrying the pipeline of nickel electrolyte, effusion meter error in dipping in the case of not full packages is relatively big, and this makes it difficult to determine sulphuric acid by the way of calculating nickel electrolyte flow.Current operational approach is directly associated with sulphuric acid adjusting control valve by pH meter, the valve opening that sulphuric acid adds is regulated by pH setting value, and then control sulphuric acid, but this method is difficult to solve pH regulator and controls the problem of hysteresis quality, and the pH value of copper-stripping reaction liquid still can not reach accurately to control.
Utility model content
The purpose of this utility model is to solve technical problem of the prior art, it is provided that a kind of can realization accurately controls, according to the change of liquid level in reactor, the flow that acid solution is added, and hysteresis quality pH accurately controlling reacting solution pH value controls device.
In order to achieve the above object, this utility model is by the following technical solutions: a kind of hysteresis quality pH controls device, including reactor, it is provided with liquidometer in described reactor, the top of described reactor is provided with reactant liquor input channel and acid solution adds pipeline, described acid solution is added pipeline and is connected with acid solution head tank, solution output channel it is provided with bottom described reactor, described acid solution is added pipeline and is provided with acid solution flow control valve, the end of described solution output channel is provided with pH meter, and described pH meter, acid solution flow control valve, liquidometer are connected with PLC.
Further, described reactant liquor input channel is provided with reactant liquor input stop valve.
Further, described solution output channel is provided with solution output stop valve.
Further, described liquid level is calculated as radar level gauge.
This utility model hinge structure has the advantages that this utility model regulates the addition of acid solution according to solution level change in reactor, the hysteresis quality that can overcome pH regulator affects, acid solution addition passes through acid solution Flux Valve Control, the valve opening of acid solution flow control valve and liquid level change are associated, and set up ratio corresponding relation, pH meter presets the pH value needing to control, when again going into operation after first production or maintenance, reactor feed liquor and liquid outlet quantity all remain constant, the aperture of acid solution flow control valve is adjusted by PLC according to the setting value of pH meter, until pH measured value is consistent with setting value result, now the valve opening of acid solution flow control valve is maintained certain value MV0, now switch to normal production process, when normally producing, impact due to upper track filter progress, the reactant liquor flow entering reactor can taper into, in this can cause reactor, liquid level produces change, liquid level changing value is set to △ L by control, when the amount of solution entering reactor is more than liquid outlet quantity, △ L be on the occasion of, when the amount of solution and liquid outlet quantity entering reactor is equal, △ L is zero, when the amount of solution entering reactor is less than liquid outlet quantity, △ L is negative value, PLC finds out valve opening and the relation of △ L of acid solution flow control valve by regulation, and then in former valve opening MV0On the basis of increase accordingly, constant or reduce, finally guarantee that pH stable controls in setting value.This utility model solve in the production process of decoppering agent due in the fluctuation of pipeline flow, reactor the pH that is insufficient and that cause for dynamical system of topical solutions mixing control delayed problem, reach accurately to control the purpose of reacting solution pH value.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
This utility model reference implication is as follows: 1, acid solution head tank；2, acid solution flow control valve；3, reactant liquor input stop valve；4, reactor；5, liquidometer；6、PLC；7, solution output stop valve；8, pH meter；9, reactant liquor input channel；10, acid solution adds pipeline；11, solution output channel.
Detailed description of the invention
The utility model is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
nullAs shown in Figure 1，A kind of hysteresis quality pH controls device，Including reactor 4，Liquidometer 5 it is provided with in reactor 4，Liquidometer 5 is radar level gauge，Liquid level in detecting reactor 4，The top of reactor 4 is provided with reactant liquor input channel 9 and acid solution adds pipeline 10，Reactant liquor input channel 9 is provided with reactant liquor input stop valve 3，Reactant liquor input channel 9 is closed during for safeguarding，Acid solution is added pipeline 10 and is connected with the acid solution head tank 1 storing acid solution，Solution output channel 11 it is provided with bottom reactor 4，Solution output channel 11 is provided with solution output stop valve 7，Solution output channel 11 is closed during for safeguarding，The end of solution output channel 11 is provided with pH meter 8，The pH of solution in detecting reactor 4，Acid solution is added pipeline 10 and is provided with acid solution flow control valve 2，Acid solution flow control valve 2、PH meter 8、Liquidometer 5 is connected with PLC 6.
When again going into operation after first production or maintenance, PLC6 sets gradually the concentration of acid solution, the concentration of reactant liquor and flow, solution output channel flow and the pH value of target solution in advance；The acid solution of reactant liquor and acid solution head tank 1 is added pipeline 10 by reactant liquor input channel 9 and acid solution respectively and is entered in reactor 4, reactant liquor and acid solution are flowed out by solution output channel 11 after reacting in reactor 4, feed back in PLC 6 when pH meter 8 is by the fructufy of detection；PLC
The valve opening of acid solution flow control valve 2 is adjusted by 6 according to the desired value of pH meter 8 setting, until the measured value of pH meter 8 feedback terminates regulation time equal with the desired value of setting, now acid solution flow control valve 2 initial opening is maintained certain value, switches to normal production process；When normally producing, liquid level information in reactor 4 is fed back in PLC 6 by liquidometer 5, PLC 6 calculates liquid level result of variations, when the amount of solution entered in reactor 4 is more than liquid outlet quantity, liquid level changing value △ L be on the occasion of, when the amount of solution entered in reactor 4 and liquid outlet quantity are equal, △ L is zero, and when the amount of solution entered in reactor 4 is less than liquid outlet quantity, △ L is negative value, PLC 6 finds out valve opening and the relation of liquid level changing value △ L of acid solution flow control valve 2 by regulation, and by PLC
6 matchings obtain controlling formula
MV= MV0 + K △ L 100%
MV acid solution Flow-rate adjustment valve opening (%)；
MV0Acid solution flow control valve initial opening
Reactor liquid level change (m) in the △ L unit interval；
K coefficient of relationship.
The valve opening of acid solution flow control valve 2 is calculated according to the above-mentioned formula simulated, PLC 6 constantly automatically controls acid solution flow control valve 2 and is adjusted to corresponding aperture, and then keep measured value and the setting value of pH meter 8 to keep consistent, thus the purpose of solution ph in reaching accurately to control reactor 4.
Claims (4)
1. hysteresis quality pH controls device, including reactor (4), it is characterized in that: in described reactor (4), be provided with liquidometer (5), the top of described reactor (4) is provided with reactant liquor input channel (9) and acid solution adds pipeline (10), described acid solution is added pipeline (10) and is connected with acid solution head tank (1), described reactor (4) bottom is provided with solution output channel (11), the end of described solution output channel (11) is provided with pH meter (8), described acid solution is added pipeline (10) and is provided with acid solution flow control valve (2), described acid solution flow control valve (2), pH meter (8), liquidometer (5) and PLC(6) it is connected.
A kind of hysteresis quality pH the most according to claim 1 controls device, it is characterised in that: described reactant liquor input channel (9) is provided with reactant liquor input stop valve (3).
A kind of hysteresis quality pH the most according to claim 1 controls device, it is characterised in that: described solution output channel (11) is provided with solution output stop valve (7).
A kind of hysteresis quality pH the most according to claim 1 controls device, it is characterised in that: described liquidometer (5) is radar level gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620129076.9U CN205474036U (en) | 2016-02-19 | 2016-02-19 | Hysteresis quality pH controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620129076.9U CN205474036U (en) | 2016-02-19 | 2016-02-19 | Hysteresis quality pH controlling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205474036U true CN205474036U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620129076.9U Active CN205474036U (en) | 2016-02-19 | 2016-02-19 | Hysteresis quality pH controlling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205474036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603467A (en) * | 2016-02-19 | 2016-05-25 | 金川集团股份有限公司 | Hysteretic pH value control device and control method |
-
2016
- 2016-02-19 CN CN201620129076.9U patent/CN205474036U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603467A (en) * | 2016-02-19 | 2016-05-25 | 金川集团股份有限公司 | Hysteretic pH value control device and control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |