CN205990437U - A kind of autoclave liquid-level auto-control device - Google Patents
A kind of autoclave liquid-level auto-control device Download PDFInfo
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- CN205990437U CN205990437U CN201620922528.9U CN201620922528U CN205990437U CN 205990437 U CN205990437 U CN 205990437U CN 201620922528 U CN201620922528 U CN 201620922528U CN 205990437 U CN205990437 U CN 205990437U
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- valve
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- autoclave
- liquid level
- control system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
A kind of autoclave liquid-level auto-control device, including the guide wave radar liquid level gauge being arranged in autoclave and un-contact radar liquid level meter, the standard current signal of guide wave radar liquid level gauge and un-contact radar liquid level meter is connected respectively to Distributed Control System DCS；The control signal of Distributed Control System DCS connects 1# blow-off valve and 2# blow-off valve respectively, and blow-off valve is connected with autoclave 5# compartment.This utility model takes double liquid level detection, intelligent decision in kettle, and the reliability of Level Detection greatly improves；The use of cellular blow-off valve expenditure and pressure device, effectively reduces differential pressure before and after blow-off valve simultaneously；The application of blow-off valve Intelligent Control Strategy, avoid blow-off valve and be operated in small guide vane, effectively alleviate ore pulp the washing away, corroding and cavitation to blow-off valve valve internal component of high flow rate, turbulence-like, extend the service life of blow-off valve to a great extent, achieve the continuous detecting of autoclave liquid level and accurate control, have very big utilization and extention to be worth in identical process similarity.
Description
Technical field
This utility model belongs to reactor automatic control technology field, is related to a kind of reactor automatic control device, tool
Body is related to the autoclave liquid-level auto-control device be applied to pressurized acid leaching technique.
Background technology
Pressurized acid leaching is an important link in electrowinning with insoluble anode technical process, and electrowinning with insoluble anode technique is will be non-
Metallize after high nickel matte or the levigate classification of nickel ore concentrate, carry out Selectively leaching through two sections of normal pressures and two-stage nitration pressurization, nickel cobalt is immersed
Go out and enter solution, copper, ferrum suppress in slag, leachate adopts organic extractant separation nickel cobalt, enter after nickel sulfate solution oil removing
Winning cell.There is oxygen evolution reaction on electrolytic deposition process middle-jiao yang, function of the spleen and stomach pole plate, in solution, nickel ion reduces precipitation on negative electrode, form final producing
Product electro deposited nickel.It is short that this technique has a technological process, and metal recovery rate is high, the excellent feature of product quality, and technological equipment is in nickel
Refine industry is in the leading level in the world.
Autoclave is the important process equipment of pressurized acid leaching, using totally-enclosed quantity-produced pattern, inside sets some partition walls,
It is divided into 5 compartments, each compartment respectively has a stirring slurry, an oxygen channel and steam-coil-heater pipeline.Through normal pressure leaching and
The ore pulp of pressurization pre-preg enters autoclave by force (forcing) pump, and the temperature of autoclave passes through each compartment steam of governor valve control
The quantity of steam of coil pipe controls at 145～165 DEG C.The amount of oxygen entering each compartment is detected simultaneously, and pass through regulating valve
Automatically controlled.Pressure in autoclave passes through autoclave tail gas governor valve control within the limits prescribed.Ore pulp is from pressurization
The 1# compartment of kettle is passed through, under a certain pressure while heating, while react, more gradually flowed through by way of overflow 2#, 3#, 4# every
Room, is finally overflowed to 5# compartment, is provided with Level Detection instrument in autoclave 5# compartment, entered by the blow-off valve of 5# compartment tail end
Row Liquid level.
In prior art, only 1 liquidometer is installed in 5# compartment, is mounted with 1 blow-off valve in discharge gate, often occurs
Liquidometer fault, simultaneously because in kettle medium be 165 DEG C about dilute sulfuric acid nickel minerals slurry（Ore pulp is contained within copper sulfide, nickel sulfide, red
The alloying pellets such as iron mine, ferrum oxide, ferrous oxide, silicon dioxide）, and before and after blow-off valve, pressure reduction is larger, discharge valve core, valve seat
Washed away due to burn into, the reason frequent breakage such as cavitation, whole production system is often because liquidometer fault or blow-off valve damage quilt
Urgent pressure and temperature reducing stop production to overhaul.Although having selected multiple liquidometers at present, also multiple spies are carried out to the material of regulating valve, structure
Rope, but all produce effects less.
Utility model content
Technical problem to be solved in the utility model is to provide one kind to be applied to add for shortcoming of the prior art
Autoclave liquid-level auto-control device in pressure acid leaching process, is often broken down with solving liquidometer in existing process, controls row
Material valve service life is short, and liquid level is difficult to the technical problem controlling.
In order to achieve the above object, this utility model employs the following technical solutions：
A kind of autoclave liquid-level auto-control device, including the guide wave radar liquid level gauge being arranged in autoclave and noncontact
Formula radar level gauge, the standard current signal of described guide wave radar liquid level gauge and un-contact radar liquid level meter is connected respectively to collection
Scattered control system DCS；The control signal of described Distributed Control System DCS connects 1# blow-off valve and 2# blow-off valve, described row respectively
Material valve is connected with autoclave 5# compartment.
Blow-off valve expenditure and pressure device is connected between described blow-off valve and autoclave.
Described 1# blow-off valve expenditure and pressure device is connected with 1# blow-off valve, and described 2# blow-off valve expenditure and pressure device is arranged with 2#
Material valve connects, and described 1# blow-off valve is connected with autoclave respectively with 2# blow-off valve.
This utility model takes double liquid level detection, intelligent decision in kettle, and the reliability of Level Detection greatly improves；Simultaneously
The use of cellular blow-off valve expenditure and pressure device, effectively reduces differential pressure before and after blow-off valve；Blow-off valve Intelligent Control Strategy
Application, it is to avoid blow-off valve is operated in small guide vane, and the ore pulp effectively alleviating high flow rate, turbulence-like is to blow-off valve valve internal component
Wash away, corrode and cavitation, extend the service life of blow-off valve to a great extent it is achieved that the continuous detecting of autoclave liquid level
Control with accurate, have very big utilization and extention to be worth in identical process similarity.
Brief description
Fig. 1 is this utility model schematic diagram；
Fig. 2 is this utility model 1# blow-off valve expenditure and pressure apparatus structure schematic diagram；
In figure：1st, un-contact radar liquid level meter；2nd, guide wave radar liquid level gauge；3rd, 1# blow-off valve；4th, 2# blow-off valve；5th, collect
Scattered control system DCS；6th, 1# blow-off valve expenditure and pressure device；7th, 2# blow-off valve expenditure and pressure device；8th, autoclave.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail：
As shown in Figure 1 and Figure 2, a kind of autoclave liquid-level auto-control device, including being arranged on 5# compartment in autoclave 8
Guide wave radar liquid level gauge 2 and un-contact radar liquid level meter 1, the mark of guide wave radar liquid level gauge 2 and un-contact radar liquid level meter 1
Quasi- current signal introduces Distributed Control System DCS5 respectively；Blow-off valve expenditure and pressure device is connected between blow-off valve and autoclave 8.
The control signal of wherein Distributed Control System DCS5 connects 1# blow-off valve and 2# blow-off valve, described 1# blow-off valve expenditure and pressure respectively
Device 6 is connected with 1# blow-off valve 3, and described 2# blow-off valve expenditure and pressure device 7 is connected with 2# blow-off valve 4, and 1# blow-off valve 3 and 2# arrange
Material valve 4 is connected with autoclave 8 respectively.
DCS system 5 is entered to the standard current signal of the un-contact radar liquid level meter 1 introducing and guide wave radar liquid level gauge 2
Row intelligent decision, therefrom selects Optimal Signals to participate in controlling as the correct liquid level signal of autoclave 8, another one signal
Shown, as Liquid level reference signal.Distributed Control System DCS5 requires according to different control, implements different controls
System strategy：When " control of position formula " shape got to by " position formula control/continuous control " switching switch of Distributed Control System DCS5 host computer
During state, liquid level in autoclave 8 is entered with line position formula and controls, when " continuous control " state got to by this switch, to liquid level in autoclave 8
Carry out specific continuous control.
In order to achieve the above object, this utility model employs the following technical solutions：
1st, due to autoclave 8 be totally-enclosed quantity-produced pattern it is necessary to ensure that in kettle Level Detection accuracy, because
This installs the different liquidometer of 2 Cleaning Principle, respectively guide wave radar liquid level gauge 2 and contactless radar liquid in autoclave 8
Position meter 1, carries out intelligent decision by Distributed Control System DCS5 system, and whether 2 liquidometer work are normal, therefrom select one
Measured value confirms accurate liquidometer as the Level Detection instrument participating in autoclave liquid automatic control, and it is input to collecting and distributing control
The measurement signal that the standard current signal of system DCS5 processed is adjusted as liquid level.
2nd, install cellular expenditure and pressure device after blow-off valve additional, effectively reduce pressure reduction before and after blow-off valve, alleviate high stream
The erosive wear that the nickel sulfate ore pulp of speed and turbulence-like causes to blow-off valve valve internal component metal surface, extends blow-off valve and uses the longevity
Life.
3rd, through dissection and analysis are carried out to the blow-off valve damaging, find blow-off valve in small guide vane, flow rate of pulp improves, punching
Brush point is more concentrated, even more serious to the erosive wear of blow-off valve valve internal component, therefore blow-off valve will be avoided as far as possible to be operated in
Less than the 50% of aperture, takes following Intelligent Control Strategy for this：
（1）Setting " position formula control/continuous control " switching switch on Distributed Control System DCS5 host computer, when this
When " control of position formula " state got to by switch, liquid level in autoclave is entered with line position formula and controls, when " continuous control " shape got to by this switch
During state, the specific continuous control to liquid level in autoclave.
（2）Position formula controls：Bound control is carried out to autoclave liquid level, by Liquid level in kettle in Distributed Control System
Between the liquid level bound that DCS5 sets.When autoclave liquid level is more than liquid level upper limit set-point, Distributed Control System DCS5 is given
2 blow-off valves of autoclave export a standard-sized sheet signal simultaneously, and 2 blow-off valve standard-sized sheets carry out discharge；When liquid level is less than under liquid level
During limit set-point, Distributed Control System DCS5 exports a fully closed signal, 2 blow-off valves to 2 blow-off valves of autoclave simultaneously
Close All, stops discharge, when rising to again more than liquid level upper limit set-point etc. liquid level, repeats said process.Using this control
Mode processed, in kettle, liquid level has larger fluctuation, circulation change between bound.
（3）Continuous control：In Distributed Control System DCS5,2 PID regulator of configuration and setting, use Distributed Control System
The liquid level accelerometer measurement signals that DCS5 selectes correspond to respectively as the measured value of 2 PID regulator, the output valve of 2 PID regulator
2 blow-off valves（1#PID actuator corresponds to 1# blow-off valve, and 2#PID actuator corresponds to 2# blow-off valve）, to 2 PID regulator respectively
Input different set-points, the set-point of 1#PID actuator is less than the set-point of 2#PID actuator.When autoclave continuously produces
When, 1#PID actuator is devoted oneself to work first, according to the deviation of measured value and set-point, enters PID arithmetic, prepares output 1# row
Material valve 3 Regulate signal, Distributed Control System DCS5 is compared judgement to 1# blow-off valve 3 Regulate signal, when output signal is less than
12mADC（Corresponding valve opening is less than 50%）When, Distributed Control System DCS5 exports 4mADC signal, 1# to 1# blow-off valve 3
Blow-off valve 3 is according to this signal of telecommunication Close All.When output signal is more than or equal to 12mA（Corresponding valve opening is more than or equal to 50%）
When, Distributed Control System DCS5 exports continuous Regulate signal to 1# blow-off valve 3（Range of signal 12mA-20 mADC）, 1# discharge
Valve 3 is continuously adjusted according to this signal of telecommunication, and valve opening changes between 50%-100%.In kettle, liquid level along with charging and is arranged
Breaking of doses balance changes, and when 1# blow-off valve 3 is fully open, but in kettle, liquid level continuously rises to reach 2#PID actuator
Set-point when, 2#PID actuator is devoted oneself to work, and Distributed Control System DCS5 equally compares to 2# blow-off valve 4 Regulate signal
Relatively judge, when output signal is less than 12mADC, Distributed Control System DCS5 exports 4mADC signal, 2# discharge to 2# blow-off valve 4
Valve Close All, when output signal is more than or equal to 12mA, Distributed Control System DCS5 exports continuous regulation to 2# blow-off valve 4
Signal（Range of signal 12mA-20 mADC）, 2# blow-off valve 4 continuously adjusted according to this signal of telecommunication, and valve opening is in 50%-
Change between 100%.When liquid level declines and is less than the set-point of 2#PID actuator, 2# blow-off valve 4 Close All, 1# blow-off valve
3 are continuously adjusted according to Regulate signal, when liquid level continues the set-point declining and being less than 1#PID actuator, two discharges
Valve Close All.
Claims (3)
1. a kind of autoclave liquid-level auto-control device it is characterised in that：Including being arranged on autoclave（8）Interior guided wave radar liquid
Position meter（2）And un-contact radar liquid level meter（1）, described guide wave radar liquid level gauge（2）And un-contact radar liquid level meter（1）'s
Standard current signal connects Distributed Control System DCS respectively（5）；Described Distributed Control System DCS（5）Control signal connect respectively
Connect 1# blow-off valve（3）With 2# blow-off valve（4）；Described 1# blow-off valve（3）With 2# blow-off valve（4）With autoclave（8）Connection.
2. a kind of autoclave liquid-level auto-control device according to claim 1 it is characterised in that：Described blow-off valve with plus
Pressure kettle（8）Between connect blow-off valve expenditure and pressure device.
3. a kind of autoclave liquid-level auto-control device according to claim 2 it is characterised in that：Described collecting and distributing control system
System DCS（5）Control signal connect 1# blow-off valve respectively（3）With 2# blow-off valve（4）；Described 1# blow-off valve expenditure and pressure device
（6）With 1# blow-off valve（3）Connect, described 2# blow-off valve expenditure and pressure device（7）With 2# blow-off valve（4）Connect, described 1# discharge
Valve（3）With 2# blow-off valve（4）Respectively with autoclave（8）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620922528.9U CN205990437U (en) | 2016-08-23 | 2016-08-23 | A kind of autoclave liquid-level auto-control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620922528.9U CN205990437U (en) | 2016-08-23 | 2016-08-23 | A kind of autoclave liquid-level auto-control device |
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| Publication Number | Publication Date |
|---|---|
| CN205990437U true CN205990437U (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620922528.9U Expired - Fee Related CN205990437U (en) | 2016-08-23 | 2016-08-23 | A kind of autoclave liquid-level auto-control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455374A (en) * | 2019-08-16 | 2019-11-15 | 泰兴金江化学工业有限公司 | A kind of monitoring system of acetate esterifying kettle liquid level |
-
2016
- 2016-08-23 CN CN201620922528.9U patent/CN205990437U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455374A (en) * | 2019-08-16 | 2019-11-15 | 泰兴金江化学工业有限公司 | A kind of monitoring system of acetate esterifying kettle liquid level |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180428 Address after: 737103 Xinhua Road, Jinchang City, Gansu Province, No. 12, Xinhua Road Patentee after: Jinchuan group information and Automation Engineering Co.,Ltd. Address before: No. 98 Jinchuan Road, Jinchang, Gansu Patentee before: JINCHUAN GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 |
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| CF01 | Termination of patent right due to non-payment of annual fee |