CN206249113U - The online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit - Google Patents
The online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit Download PDFInfo
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- CN206249113U CN206249113U CN201621381339.1U CN201621381339U CN206249113U CN 206249113 U CN206249113 U CN 206249113U CN 201621381339 U CN201621381339 U CN 201621381339U CN 206249113 U CN206249113 U CN 206249113U
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Abstract
The utility model discloses a kind of online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit, including upper liquid pump, chemical tank, measuring pump, online pH detectors, flow cell, atomizer and PLC control cabinet, upper liquid pump is connected with the entrance point of chemical tank, the port of export of chemical tank is connected with the entrance point of the measuring pump with electronic Fill argon clamping fixture, the entrance point of measuring pump is provided with imported valve and filter, and the port of export of measuring pump connects the atomizer in destilling tower overhead line by connecting pipe；Oil water separator is provided with destilling tower overhead line, the port of export of oil water separator is connected in flow cell, online pH detectors are provided with flow cell, online pH detectors are electrically connected to PLC control cabinet, and PLC control cabinet electrically connects electronic stroke device.
Description
Technical field
The utility model belongs to atmospheric and vacuum distillation unit chemistry loading techniques field, is primarily related to a kind of Atmospheric vacuum and steams
The online anti-corrosion injecting intelligent controlling device of distillation unit, is applied to the filling of the online anti-corrosion injecting of atmospheric and vacuum distillation unit.
Background technology
The corrosive medium of decompressor low-temperature corrosion is mainly the H of HC1 mono-2 S—H2O, corrosion location is atmospheric and vacuum distillation unit
Primary distillation tower, atmospheric tower and vacuum tower top and the condenser system of tower top.The reason for corrosion is containing a certain amount of chlorination in crude oil
Thing, even if also containing micro magnesium salts, calcium salt even sodium salt after desalination, MgC1 and CaC1 starts hydrolysis below 200 DEG C,
NaC1 is also hydrolyzed at 300 DEG C, generates hydrogen chloride, and the environment for meeting liquid phase water produces hydrochloric acid, and produces strong corrosion
Effect：
Circulation is formed, aggravates equipment corrosion, cause shut-down, yield to decline, or even great accident can be caused, caused
Artificial injures and deaths.
In addition, being that medicament is directly injected into gas phase pipeline, gas-liquid mixed effect using pipeline when to tower top injection in technique
Rate is low, causes consumption dosage big, wastes medicament, and anticorrosion ability is bad.
The intelligent control system for adding agent station of atmospheric and vacuum distillation unit of production at present is made up of PLC and color touch screen
Control system, is to add PPM values beforehand through touch-screen setting injecting, and can receive oil flow signal to realize medicament
Fluence fluctuates and fluctuates with oil flow, it is possible to by measuring the flowmeter of pump discharge, reach closed loop to correct measuring pump
Flow, makes metering pump discharge more accurate, and can realize remote operation.The ratio that adds of current system medicament is according to corruption
Degree of corrosion regulation adds dosage by the theory that experience is manually calculated, although control realizes automatic fixed ratio and adds medicament, by fixed
Than adding into whether the medicament in atmospheric and vacuum distillation unit plays due effect, the anti-corrosion of Ta Nei and pipeline can be reached will
Ask, the pH value in overhead condensation water can be made（Between 7.5-8.5）Qualified index is reached, is required for manual sampling tower top cold
Solidifying water carries out laboratory assays determination, and then according to analysis data, constantly regulation suitably adds PPM during scheduling and planning
Value, makes its metastable automatic feeding medicament.
The content of the invention
In order to solve problems of the prior art, the purpose of utility model is to provide a kind of atmospheric and vacuum distillation unit and exists
Line anti-corrosion injecting intelligent controlling device, pH value of the utility model in condensed water come automatic detection, adjust automatically adding amount,
Its pH value is reached optimum value, injecting is in on-line monitoring automatic running state, optimize technique anti-corrosion, slow down burn into and prolong
Length goes into operation the time between overhauls(TBO), finds hidden danger, avoids accident, reduces unplanned parking, improves Atmospheric vacuum process units injecting system
Intelligent automatic operation level.
In order to realize above-mentioned technical proposal, the utility model uses technical scheme as described below：
A kind of online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit, including upper liquid pump, chemical tank, measuring pump,
Online pH detectors, flow cell, atomizer and PLC control cabinet, upper liquid pump is connected with the entrance point of chemical tank, and chemical tank goes out
Mouth end is connected with the entrance point of the measuring pump with electronic Fill argon clamping fixture, and the entrance point of measuring pump is provided with imported valve and mistake
Filter, the port of export of measuring pump connects the atomizer in destilling tower overhead line by connecting pipe；Destilling tower top
Oil water separator is provided with pipeline, the port of export of oil water separator is connected in flow cell, is provided with flow cell online
PH detectors, online pH detectors are electrically connected to PLC control cabinet, and PLC control cabinet electrically connects electronic stroke device.
Further, the measuring pump is provided with least a set of.
Further, also including Central Control Room, the PLC control cabinet is by wired or wireless transmission means and Central Control Room
Host computer realizes communication.
Further, the entrance point of measuring pump is provided with imported valve and filter.
Due to using above-mentioned technical proposal, the utility model has following superiority：
The utility model can be in real time automatic detection condensed water by online pH detectors pH value, then by PLC
The adding amount of switch board adjust automatically measuring pump, enables its pH value to reach the optimum value of 7.5-8.5, and injecting is in on-line monitoring
Automatic running state, optimize Process anti-corrosion, slow down burn into extension go into operation the time between overhauls(TBO), find hidden danger, avoid accident, reduce
Unplanned parking, improves the intelligent automatic operation level of Atmospheric vacuum process units injecting system.
Brief description of the drawings
Fig. 1 is structure diagram of the present utility model；
Fig. 2 is control system electrical schematic diagram of the present utility model；
In figure：1st, upper liquid pump；2nd, chemical tank；3rd, measuring pump, 4, electronic Fill argon clamping fixture；5th, atomizer；6th, destilling tower；
7th, oil water separator；8th, flow cell；9th, online pH detectors；10th, PLC control cabinet；11st, Central Control Room.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the technical solution of the utility model.
As shown in figure 1, a kind of online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit, including upper liquid pump 1, medicament
Case 2, measuring pump 3, online pH detectors 9, flow cell 8, atomizer 5 and PLC control cabinet 10, upper liquid pump 1 enter with chemical tank 2
Mouthful end connection, the port of export of chemical tank 2 is connected with the entrance point of the measuring pump 3 for carrying electronic Fill argon clamping fixture, and measuring pump 3 enters
Mouth end is provided with imported valve and filter, and the port of export of measuring pump 3 is connected by connecting pipe and is located at destilling tower overhead line
Interior atomizer 5；Oil water separator 7 is provided with destilling tower overhead line, the port of export of oil water separator 7 is connected to circulation
In pond 8, online pH detectors 9 are provided with flow cell 8, online pH detectors 9 are electrically connected to PLC control cabinet 10, PLC controls
Cabinet 10 electrically connects electronic stroke device 4.
Described PLC control cabinet 10 is used to control the startup and stopping of measuring pump 3, while can also be set by it
PLC control system is used to receive the signal of the online transmission of pH detectors 9, and outputs signal to electronic stroke after analysis, calculating
Controller 4.
In actual production, more than one of destilling tower setting, therefore, correspondence destilling tower sets the measuring pump of equal number
3, thus can be by individually controlling the adding amount of each measuring pump.
For the ease of real-time management, control and the requirement of client, the utility model also includes Central Control Room, the PLC controls
Cabinet processed 10 realizes communication by the PLC control system in it through the host computer in wired or wireless transmission means and Central Control Room 11.
Operation principle of the present utility model is：
The import of liquid pump 1 is linked into barreled with corrosion inhibiter leather hose, liquid pump 1 in startup will neutralize corrosion inhibiter and be pumped into
To in chemical tank 2, liquid pump 1 in closing；The imported valve of the entrance point of measuring pump 3 is opened, the neutralization corrosion inhibiter gravity flow in chemical tank 2
To measuring pump 3, measuring pump 3 is started by PLC control cabinet 10, then neutralize corrosion inhibiter and destilling tower tower is injected into by atomizer 5
On push pipe line；The online real-time detection of pH detectors 9 flows into the pH value of the condensed water in flow cell, and the pH value of detection is transferred to
PLC control cabinet 10, then by the analysis of the PLC control system in PLC control cabinet 10, calculating, outputs signal to electronic stroke
Controller 4, electronic Fill argon clamping fixture 4 can automatically adjust the stroke of the plunger of measuring pump 3 to adjust flow, so that in condensed water
PH value ensure between 7.5-8.5, effectively slow down the corrosion of tower top, pipe-line equipment, condenser system.
Described online pH detectors 9 have automatic telescopic cleaning function.
In addition, can pass through wireless by between the communication module and Central Control Room in PLC control cabinet on the spot according to user's request
Or wired mode communication, facilitate and remote monitoring is realized to pH value monitoring index；Wired communications signal is RS-485, communications protocol
Modbus。
Set as a example by three by measuring pump, the control circuit to control measuring pump and its electronic Fill argon clamping fixture of institute's band enters
Row explanation, as shown in Fig. 2 it is made up of air switch, contactor, electrothermal relay, change-over switch etc..SW1 is gone into automatic position
Put, close KM1, then the first metering pump startup, the first electronic Fill argon clamping fixture receives PLC control cabinet according to overhead condensation water pH value
The signal for transmitting, automatically adjusts the ram travel of the first measuring pump to adjust flow；Equally, SW2 is gone into automated location, is closed
KM2, then second measure pump startup, and the second electronic Fill argon clamping fixture receives what PLC control cabinet was transmitted according to overhead condensation water pH value
Signal, automatically adjusts the ram travel of the second measuring pump to adjust flow；Equally, SW3 is gone into automated location, close KM3, then
3rd metering pump startup, the 3rd electronic Fill argon clamping fixture receives the signal that PLC control cabinet is transmitted according to overhead condensation water pH value, from
The ram travel of the 3rd measuring pump of regulation is moved to adjust flow.
Claims (4)
1. the online anti-corrosion injecting intelligent controlling device of a kind of atmospheric and vacuum distillation unit, it is characterised in that：Including upper liquid pump, medicament
Case, measuring pump, online pH detectors, flow cell, atomizer and PLC control cabinet, upper liquid pump are connected with the entrance point of chemical tank,
The port of export of chemical tank is connected with the entrance point of measuring pump with electronic Fill argon clamping fixture, the entrance point of measuring pump be provided with into
Mouth valve and filter, the port of export of measuring pump connect the atomizer in destilling tower overhead line by connecting pipe；
Oil water separator is provided with destilling tower overhead line, the port of export of oil water separator is connected in flow cell, in flow cell
Online pH detectors are provided with, online pH detectors are electrically connected to PLC control cabinet, and PLC control cabinet electrically connects electronic stroke device.
2. the online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit according to claim 1, it is characterised in that：Institute
State measuring pump be provided with it is at least a set of.
3. the online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit according to claim 1, it is characterised in that：Also
Including Central Control Room, the PLC control cabinet realizes communication by the host computer in wired or wireless transmission means and Central Control Room.
4. the online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit according to claim 1 and 2, its feature exists
In：The entrance point of measuring pump is provided with imported valve and filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621381339.1U CN206249113U (en) | 2016-12-16 | 2016-12-16 | The online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621381339.1U CN206249113U (en) | 2016-12-16 | 2016-12-16 | The online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206249113U true CN206249113U (en) | 2017-06-13 |
Family
ID=59008911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621381339.1U Active CN206249113U (en) | 2016-12-16 | 2016-12-16 | The online anti-corrosion injecting intelligent controlling device of atmospheric and vacuum distillation unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206249113U (en) |
-
2016
- 2016-12-16 CN CN201621381339.1U patent/CN206249113U/en active Active
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