CN202067165U - Automatic control system for atmospheric and vacuum distillation unit tower top corrosion - Google Patents
Automatic control system for atmospheric and vacuum distillation unit tower top corrosion Download PDFInfo
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- CN202067165U CN202067165U CN2010206748244U CN201020674824U CN202067165U CN 202067165 U CN202067165 U CN 202067165U CN 2010206748244 U CN2010206748244 U CN 2010206748244U CN 201020674824 U CN201020674824 U CN 201020674824U CN 202067165 U CN202067165 U CN 202067165U
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- ammonia
- corrosion inhibiter
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- 230000007797 corrosion Effects 0.000 title claims abstract description 188
- 238000005260 corrosion Methods 0.000 title claims abstract description 188
- 238000005292 vacuum distillation Methods 0.000 title claims abstract description 34
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 158
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 79
- 241000282326 Felis catus Species 0.000 claims description 51
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 34
- 229910052786 argon Inorganic materials 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004821 distillation Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000003112 inhibitor Substances 0.000 abstract 5
- 238000000034 method Methods 0.000 description 8
- 230000003628 erosive effect Effects 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The utility model discloses an automatic control system for atmospheric and vacuum distillation unit tower top corrosion to solve the problem that the atmospheric and vacuum distillation unit tower top corrosion can not be well controlled via the prior art. The automatic control system comprises an ammonia drum (12), a corrosion inhibitor pot (11), an ammonia-injection pump (5), an ammonia-injection pump stroke controller (4), a corrosion inhibitor pump (10), a corrosion inhibitor pump stroke controller (9), an ammonia-injection controller (1), a corrosion inhibitor controller (6), a corrosion detection electrode (7), a corrosion signal transmitter (8), an on-line pH meter (2), a pH signal transmitter (3), etc. A program module for determining the type of the to-be-replaced corrosion inhibitor is also included. The automatic control system is mainly applicable to the automatic control of the tower top corrosion of the atmospheric and vacuum distillation unit of an oil refinery.
Description
Technical field
The utility model belongs to oil refinery equipment anticorrosion technique field, relates in particular to a kind of atmospheric and vacuum distillation unit cat head corrosion automatic control system.
Background technology
Along with the fast development of China's oil refining industry, the continuous increase of high sulfur-bearing saliferous crude runs, the corrosion of refinery decompressioning device's overhead system is on the rise, and becomes the subject matter of confining device long period safe handling.For the corrosion of atmospheric and vacuum distillation unit cat head, remain at present by annotating corrosion inhibiter to cat head and annotating ammonia and solve.The method of injecting is by ram pump corrosion inhibiter and ammonia to be injected cat head; Injection rate IR is to adopt manually-operated, and according to assay cat head iron ion content and divide dried up pH value and by virtue of experience, the travel of plunger by the adjusting pump decides.This method is difficult to the erosion of control tower top rot for the frequent refinery that changes of the character of present many kinds of the refining crude oil and the crude oil of refining; Even, regulate injection rate IR according to analysis result and also exist very big hysteresis phenomenon for the very abundant operating personnel of anticorrosion experience.
" the automatic loading system of atmospheric and vacuum distillation unit corrosion inhibiter " literary composition that 2008 the 3rd periodicals of " petrochemical complex corrosion and protection " magazine are stepped on is introduced, automatically annotate by implementing corrosion inhibiter at atmospheric and vacuum distillation unit, can improve the steady rate of corrosion inhibiter filling, control tower top rot erosion effectively.Though this loading system has solved the automatic control problem of pH value, exists following shortcoming: when the corrosion of (1) cat head is still serious, can't judge the type that when needs to change corrosion inhibiter.(2) adopt the frequency converter timing technology to realize the adjusting of corrosion inhibiter fluence, frequency need remain on particular range, otherwise cisco unity malfunction.Frequency converter itself is not explosion-proof in addition, in the explosion-proof cabinet that is not easy to again pack into; This is restricted its use, must be put into non-explosion-proof district (as operation room), makes troubles to use.(3) only by the erosion of control pH value control tower top rot, can not control the cat head corrosion that other factors causes.
Summary of the invention
The purpose of this utility model provides a kind of atmospheric and vacuum distillation unit cat head corrosion automatic control system, can not control problems such as atmospheric and vacuum distillation unit cat head corrosion well to solve prior art.
For addressing the above problem, the technical solution adopted in the utility model is: a kind of atmospheric and vacuum distillation unit cat head corrosion automatic control system, it is characterized in that: this system is provided with the ammonia jar, the corrosion inhibiter jar, annotate ammonia pump, annotate the ammonia pump Fill argon clamping fixture, the corrosion inhibiter pump, corrosion inhibiter pump stroke controller, annotate the ammonia controller, the corrosion inhibiter controller, annotating ammonia controller and corrosion inhibiter controller is installed in the explosion-proof instrument switch board, on the cat head volatilization line of atmospheric and vacuum distillation unit distillation column, be provided with corrosion detecting electrode and corrosion signal transmitting device, on the separation water pipeline, be provided with online pH meter and pH signal transmitting device, annotate between the inlet and ammonia jar of ammonia pump, between the inlet of corrosion inhibiter pump and the corrosion inhibiter jar, annotate between ammonia pump and corrosion inhibiter delivery side of pump and the cat head volatilization line, be respectively equipped with pipeline, between the input end of the output terminal of pH signal transmitting device and notes ammonia controller, between the input end of the output terminal of notes ammonia controller and notes ammonia pump Fill argon clamping fixture, between the output terminal of corrosion signal transmitting device and the input end of corrosion inhibiter controller, between the input end of the output terminal of corrosion inhibiter controller and corrosion inhibiter pump stroke controller, be respectively equipped with signal transmssion line, described atmospheric and vacuum distillation unit cat head corrosion automatic control system also is provided with the corrosion inhibiter type and changes judge module.
Operating process of the present utility model sees the explanation of this instructions embodiment part for details.From operating process as can be seen, employing the utlity model has following beneficial effect: (1) the utility model is provided with the corrosion inhibiter type and changes judge module, can judge when needs are changed the corrosion inhibiter type according to the corrosion data signal that corrosion signal transmitting device sends, thereby prevent that heavy corrosion from appearring in cat head, and the waste of using unsuitable corrosion inhibiter to cause.(2) annotate the travel of plunger of ammonia pump and control ammonia agent fluence with annotating the control of ammonia pump Fill argon clamping fixture, control the corrosion inhibiter fluence with the travel of plunger of corrosion inhibiter pump stroke controller control corrosion inhibiter pump.It all is explosion-proof annotating ammonia pump Fill argon clamping fixture and corrosion inhibiter pump stroke controller itself, annotates ammonia controller and corrosion inhibiter controller and can be installed on easily in the explosion-proof instrument switch board.Like this, just there is not the not explosion-proof problem that causes of frequency converter itself in the prior art in the utility model, does not also have the problem of frequency converter frequency of utilization aspect simultaneously.(3) not only by the erosion of control pH value control tower top rot, but also the corrosion data signal that sends according to corrosion signal transmitting device, by changing the corrosion inhibiter fluence or changing the corrosion inhibiter type, control the cat head that causes by various factors effectively and corrode.(4) can realize corroding online detection and robotization control, anticorrosion process is strengthened, avoid manually-operated to be difficult to control tower top rot erosion, and produce medicament proportioning and fluence error, have problem such as hysteresis phenomenon, improve medicament and inject precision.
The utility model is particularly useful for refining the frequent refinery that changes of character of the many kinds crude oil and the crude oil of refining.The cat head corrosion rate of atmospheric and vacuum distillation unit is remained on for a long time≤0.3 millimeter/year claimed range in, divide dried up pH value to remain on about 7, anticorrosion ability is reliably guaranteed, corrosion environment fundamentally improves.Like this, the equipment material of atmospheric and vacuum distillation unit can use carbon steel, needn't carry out upgrade of material, can save great amount of investment.For example, under≤0.3 millimeter/year corrosion rate, the carbon steel fuse of atmospheric and vacuum distillation unit cold exchange device (comprising all inner members such as heat exchanger tube, back up pad) is the longest can be used 7 years; Can also reduce shut-down (breakdown) mainteance thus, prolong the production time, can save substantial contribution again.After the cat head corrosion of atmospheric and vacuum distillation unit is controlled, subsequent machining technology also is highly profitable, for example can avoids a series of problems such as catalyst poisoning inactivation that produced because of the cat head corrosion.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.The drawings and specific embodiments do not limit the claimed scope of the utility model.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model atmospheric and vacuum distillation unit cat head corrosion automatic control system.
Embodiment
Referring to Fig. 1, atmospheric and vacuum distillation unit cat head corrosion automatic control system of the present utility model (abbreviating cat head corrosion automatic control system as) is provided with ammonia jar 12, corrosion inhibiter jar 11, notes ammonia pump 5, annotates ammonia pump Fill argon clamping fixture 4, corrosion inhibiter pump 10, corrosion inhibiter pump stroke controller 9, annotates ammonia controller 1, corrosion inhibiter controller 6.Annotating ammonia controller 1 and corrosion inhibiter controller 6 is installed in the explosion-proof instrument switch board 18.On the cat head volatilization line 15 of atmospheric and vacuum distillation unit distillation column 13, be provided with corrosion detecting electrode 7 and corrosion signal transmitting device 8, on separation water pipeline 14, be provided with online pH meter 2 and pH signal transmitting device 3.Above-mentioned device all is that this area is used always.Wherein, annotate ammonia pump 5 and corrosion inhibiter pump 10 and be generally ram pump or membrane pump.Distillation column 13 is represented primary tower, atmospheric tower or the vacuum distillation tower in the atmospheric and vacuum distillation unit.One end of cat head volatilization line 15 links to each other with the top of distillation column 13, and the other end links to each other with the top of oil-water separator 16.An end that separates water pipeline 14 links to each other with the bottom of oil-water separator 16, and the other end is outlet.
Annotate between the inlet and ammonia jar 12 of ammonia pump 5, between the inlet and corrosion inhibiter jar 11 of corrosion inhibiter pump 10, the outlet and the cat head of notes ammonia pump 5 and corrosion inhibiter pump 10 volatilize between the line 15, is respectively equipped with pipeline.The output terminal of pH signal transmitting device 3 and annotate between the input end of ammonia controller 1, between the output terminal of annotating ammonia controller 1 and the input end of annotating ammonia pump Fill argon clamping fixture 4, corrode between the input end of the output terminal of signal transmitting device 8 and corrosion inhibiter controller 6, between the input end of the output terminal of corrosion inhibiter controller 6 and corrosion inhibiter pump stroke controller 9, be respectively equipped with signal transmssion line.Annotate ammonia pump Fill argon clamping fixture 4 and directly link to each other with notes ammonia pump 5, corrosion inhibiter pump stroke controller 9 directly links to each other with corrosion inhibiter pump 10.Among Fig. 1, pipeline represents that with fine line the arrow on the pipeline is represented ammonia, corrosion inhibiter, oil gas respectively or divided dried up flow direction; Signal transmssion line dots, and the arrow on the signal transmssion line is represented the transmission direction of electric signal.
Described atmospheric and vacuum distillation unit cat head corrosion automatic control system also is provided with the corrosion inhibiter type and changes the determining program module.The corrosion inhibiter type is changed and is provided with corrosion inhibiter type replacing determining program in the determining program module; This program is formed the corrosion inhibiter type and is changed the determining program module with storer.The corrosion inhibiter type is changed the determining program module can judge when needs are changed the corrosion inhibiter type according to the corrosion data signal that corrosion signal transmitting device 8 sends.
Referring to Fig. 1, atmospheric and vacuum distillation unit cat head corrosion automatic control system of the present utility model can be provided with pH value display unit 171, corrosion inhibiter fluence display unit 172, ammonia agent fluence display unit 173, the information that supplies operating personnel to observe decorrelation.Above-mentioned unit and corrosion inhibiter type are changed the determining program module, and the warning device (not shown in figure 1) of replacing corrosion inhibiter type hereinafter described, all are to be located in the dcs 17 of refinery generally; Like this, operating personnel just can grasp the situation that cat head corrodes at any time at operation room, judge simultaneously whether the type of corrosion inhibiter needs to change.Between the input end of the output terminal of pH signal transmitting device 3 and pH value display unit 171, between the input end of the output terminal of corrosion inhibiter pump stroke controller 9 and corrosion inhibiter fluence display unit 172, annotate between the input end of the output terminal of ammonia pump Fill argon clamping fixture 4 and ammonia agent fluence display unit 173, be respectively equipped with signal transmssion line.
Above-mentioned pH value display unit 171, ammonia agent fluence display unit 173 also can be located at and annotate on the ammonia controller 1; Corrosion inhibiter fluence display unit 172 and corrosion inhibiter type are changed determining program module (and warning device of replacing corrosion inhibiter type hereinafter described) and also can be located on the corrosion inhibiter controller 6.
Atmospheric and vacuum distillation unit generally is provided with primary tower, atmospheric tower and vacuum distillation tower; Carry out cat head when anticorrosion, each tower is installed a cover cat head corrosion of the present utility model automatic control system respectively and get final product (figure summary).In the three cover cat head corrosion automatic control systems three are overlapped ammonia jars 12, corrosion inhibiter jar 11, notes ammonia pump 5, annotate ammonia pump Fill argon clamping fixture 4, corrosion inhibiter pump 10, corrosion inhibiter pump stroke controller 9, are annotated ammonia controller 1, corrosion inhibiter controller 6 and explosion-proof instrument switch board 18, can be installed on respectively on three carriages, form three skid-mounted type devices 19, also can be installed on the carriage, form a skid-mounted type device (shared) by three towers.When three cover cat head corrosion automatic control systems were provided with a skid-mounted type device, ammonia jar 12 and corrosion inhibiter jar 11 can be provided with one respectively, and be shared by three cover cat head corrosion automatic control systems.
Below in conjunction with Fig. 1 operating process of the present utility model is described.Adopt the cat head corrosion automatic control process of the utility model scheme, comprise following three aspects.
1. pH value control.Annotating ammonia pump 5 is injected into the ammonia in the ammonia jar 12 in the cat head volatilization line 15 through pipeline.Online pH meter 2 detects to separate and divides dried up pH value in the water pipeline 14, by pH signal transmitting device 3 detected pH value signal is sent to through signal transmssion line and annotates ammonia controller 1.Annotate ammonia controller 1 the standard pH value of pH value signal and setting (for example 7) compared, calculate difference, and through signal transmssion line to annotating ammonia pump Fill argon clamping fixture 4 transmission pH value control signals.Annotating ammonia pump Fill argon clamping fixture 4 regulates the travel of plunger of annotating ammonia pump 5 according to pH value control signal, divide dried up pH value to remain on specialized range interior (for example 6.5～7.5) in the water pipeline 14 regulate to annotate the ammonia agent fluence of ammonia pump 5, finally to make to separate to cat head volatilization line 15.
Simultaneously, pH signal transmitting device 3 also is sent to pH value display unit 171 with the pH value signal through signal transmssion line, annotates ammonia pump Fill argon clamping fixture 4 ammonia agent fluence signal is sent to ammonia agent fluence display unit 173 through signal transmssion line.
2. corrosion rate control.Corrosion inhibiter pump 10 is injected into the corrosion inhibiter in the corrosion inhibiter jar 11 in the cat head volatilization line 15 through pipeline.Corrosion detecting electrode 7 detects the corrosion data of cat head volatilization line 15, by corrosion signal transmitting device 8 detected corrosion data signal is sent to corrosion inhibiter controller 6 through signal transmssion line.Corrosion inhibiter controller 6 compares the standard corrosion rate (for example 0.3 millimeter/year) of corrosion data signal and setting, calculates to exceed value, and transmits the corrosion data control signal through signal transmssion line to corrosion inhibiter pump stroke controller 9.Corrosion inhibiter pump stroke controller 9 is regulated the travel of plunger of corrosion inhibiter pump 10 according to the corrosion data control signal, to regulate the corrosion inhibiter fluence of corrosion inhibiter pump 10, finally make the corrosion rate of cat head volatilization line 15 remain in the specialized range (for example≤0.3 millimeter/year) to cat head volatilization line 15.
Simultaneously, corrosion inhibiter pump stroke controller 9 is sent to corrosion inhibiter fluence display unit 172 with corrosion inhibiter fluence signal through signal transmssion line.
3. the corrosion inhibiter type is changed.Corrosion signal transmitting device 8 is sent to dcs 17 with the volatilize corrosion data signal of line 15 of cat head through signal transmssion line, changes the determining program module by the corrosion inhibiter type and receives this signal (not shown in figure 1).When strengthening corrosion inhibiter pump 10 through pipeline during to the corrosion inhibiter fluence of cat head volatilization line 15, the corrosion inhibiter type is changed the corrosion data signal of the cat head volatilization line 15 that the determining program module can transmit corrosion signal transmitting device 8 and the standard corrosion rate (for example 0.3 millimeter/year) of setting compares.If after strengthening the corrosion inhibiter fluence, the corrosion rate of cat head volatilization line 15 still can not be less than or equal to the standard corrosion rate of setting, separate simultaneously in the water pipeline 14 and divide dried up pH value again within the limits prescribed, just illustrate that this corrosion inhibiter does not play corrosion-resisting function.At this moment, the corrosion inhibiter type is changed the determining program module promptly can make the judgement of changing the corrosion inhibiter type, and will judge that signal is sent to warning device (figure slightly) through signal transmssion line.After warning device sends the alerting signal of changing the corrosion inhibiter type, by the corrosion inhibiter type in the artificial replacing corrosion inhibiter jar 11.Those skilled in the art can work out out used corrosion inhibiter type at an easy rate and change determining program, and described module and warning device are set; Detailed description is omitted.
By the operation of above three aspects, can make the cat head corrosion of atmospheric and vacuum distillation unit obtain excellent real-time, control automatically.
Claims (3)
1. an atmospheric and vacuum distillation unit cat head corrodes automatic control system, it is characterized in that: this system is provided with ammonia jar (12), corrosion inhibiter jar (11), annotate ammonia pump (5), annotate ammonia pump Fill argon clamping fixture (4), corrosion inhibiter pump (10), corrosion inhibiter pump stroke controller (9), annotate ammonia controller (1), corrosion inhibiter controller (6), annotating ammonia controller (1) and corrosion inhibiter controller (6) is installed in the explosion-proof instrument switch board (18), on the cat head volatilization line (15) of atmospheric and vacuum distillation unit distillation column (13), be provided with corrosion detecting electrode (7) and corrosion signal transmitting device (8), on separation water pipeline (14), be provided with online pH meter (2) and pH signal transmitting device (3), annotate between the inlet and ammonia jar (12) of ammonia pump (5), between the inlet of corrosion inhibiter pump (10) and the corrosion inhibiter jar (11), annotate between the outlet and cat head volatilization line (15) of ammonia pump (5) and corrosion inhibiter pump (10), be respectively equipped with pipeline, between the input end of the output terminal of pH signal transmitting device (3) and notes ammonia controllers (1), between the input end of the output terminal of notes ammonia controllers (1) and notes ammonia pump Fill argon clamping fixtures (4), between the output terminal of corrosion signal transmitting device (8) and the input end of corrosion inhibiter controller (6), between the input end of the output terminal of corrosion inhibiter controller (6) and corrosion inhibiter pump stroke controller (9), be respectively equipped with signal transmssion line, described atmospheric and vacuum distillation unit cat head corrosion automatic control system also is provided with the corrosion inhibiter type and changes judge module.
2. atmospheric and vacuum distillation unit cat head corrosion automatic control system according to claim 1, it is characterized in that: this system is provided with pH value display unit (171), corrosion inhibiter fluence display unit (172), ammonia agent fluence display unit (173), be located in the dcs (17) of refinery, between the input end of the output terminal of pH signal transmitting device (3) and pH value display unit (171), between the input end of the output terminal of corrosion inhibiter pump stroke controller (9) and corrosion inhibiter fluence display unit (172), between the output terminal of notes ammonia pump Fill argon clamping fixtures (4) and the input end of ammonia agent fluence display unit (173), be respectively equipped with signal transmssion line, described corrosion inhibiter type is changed judge module and is located in the dcs (17).
3. atmospheric and vacuum distillation unit cat head corrosion automatic control system according to claim 1 and 2, it is characterized in that: ammonia jar (12), corrosion inhibiter jar (11), notes ammonia pump (5), notes ammonia pump Fill argon clamping fixture (4), corrosion inhibiter pump (10), corrosion inhibiter pump stroke controller (9), notes ammonia controller (1), corrosion inhibiter controller (6) and explosion-proof instrument switch board (18) are installed on the carriage, form a skid-mounted type device (19).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206748244U CN202067165U (en) | 2010-12-16 | 2010-12-16 | Automatic control system for atmospheric and vacuum distillation unit tower top corrosion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206748244U CN202067165U (en) | 2010-12-16 | 2010-12-16 | Automatic control system for atmospheric and vacuum distillation unit tower top corrosion |
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| Publication Number | Publication Date |
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| CN202067165U true CN202067165U (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206748244U Expired - Lifetime CN202067165U (en) | 2010-12-16 | 2010-12-16 | Automatic control system for atmospheric and vacuum distillation unit tower top corrosion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361652A (en) * | 2012-03-29 | 2013-10-23 | 中国石油化工股份有限公司 | Neutralizing corrosion inhibitor for distilling apparatuses and preparation method thereof |
| CN104862003A (en) * | 2015-05-26 | 2015-08-26 | 邓万军 | Long-period running management system for crude oil atmospheric and vacuum distillation unit |
| CN114911279A (en) * | 2021-02-08 | 2022-08-16 | 中国石油化工股份有限公司 | Storage, distillation device tower top pH value regulation and control method, device and equipment |
-
2010
- 2010-12-16 CN CN2010206748244U patent/CN202067165U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361652A (en) * | 2012-03-29 | 2013-10-23 | 中国石油化工股份有限公司 | Neutralizing corrosion inhibitor for distilling apparatuses and preparation method thereof |
| CN104862003A (en) * | 2015-05-26 | 2015-08-26 | 邓万军 | Long-period running management system for crude oil atmospheric and vacuum distillation unit |
| CN104862003B (en) * | 2015-05-26 | 2016-05-25 | 大连碧水蓝天环保科技工程有限公司 | Crude oil atmospheric vacuum distillation device long-term operation management system |
| CN114911279A (en) * | 2021-02-08 | 2022-08-16 | 中国石油化工股份有限公司 | Storage, distillation device tower top pH value regulation and control method, device and equipment |
| CN114911279B (en) * | 2021-02-08 | 2024-05-28 | 中国石油化工股份有限公司 | Memory, distillation device top pH value regulating and controlling method, device and equipment |
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| C14 | Grant of patent or utility model | ||
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Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: Luoyang Petrochemical Engineering Corporation /SINOPEC Patentee after: Sinopec Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee before: Luoyang Petrochemical Engineering Co., China Petrochemical Group Patentee before: Sinopec Corp. |
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Granted publication date: 20111207 |
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| CX01 | Expiry of patent term |