CN102029134A - Control method of tail oxygen content in oxygen-enriched oxidation process of cyclohexane - Google Patents
Control method of tail oxygen content in oxygen-enriched oxidation process of cyclohexane Download PDFInfo
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- CN102029134A CN102029134A CN2010105227545A CN201010522754A CN102029134A CN 102029134 A CN102029134 A CN 102029134A CN 2010105227545 A CN2010105227545 A CN 2010105227545A CN 201010522754 A CN201010522754 A CN 201010522754A CN 102029134 A CN102029134 A CN 102029134A
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Abstract
The invention relates to a control method of tail oxygen content in an oxygen-enriched oxidation process of cyclohexane. The control method is used for controlling the tail oxygen content through online monitoring of gas phase tail oxygen content and in-time treatment when the oxygen content is super-high by using reaction kettles. The control method is characterized in that: in a cyclohexanone device, tail gas pipelines and a total tail oxygen pipeline of the first three reaction kettles from an upper position to a lower position according to a procedure are respectively provided with an online oxygen analyzer; when the numerical value of any one of the online analyzers exceeds a standard, an alarm or interlocking is started to emergently inject nitrogen into the reaction kettles. Through the perfect control method of the tail oxygen content, the invention ensures that the gas phase oxygen content of the reaction kettles in the oxygen-enriched oxidation process of the cyclohexane cannot exceed the standard, thereby controlling explosion hazards.
Description
Technical field
The present invention relates to the control method of the tail oxygen content of reaction system in a kind of oxidizing cyclohexane using oxygen enriched technology, the timely processing when relating generally to a kind of on-line monitoring of the gas phase tail oxygen content by reactor and oxygen content superelevation is with the method for control tail oxygen content.
Background technology
At present, it is reported that the Ba Ling petrochemical industry has realized the industrialization of oxidizing cyclohexane using oxygen enriched technology.Document " the dangerous research of gas-phase space in the oxidizing cyclohexane using oxygen enriched reactor " (Yin Huaqing etc., " Hunan University's journal (natural science edition) ", the 36th the 5th phase of volume) studied " cyclohexane-oxygen-nitrogen " blast ternary diagram under 160 ℃, 1MPa condition, drawing pimelinketone device reactor air phase boundary oxygen content is 9.4%, but does not study the concrete scheme of control tail oxygen content.Do not appear in the newspapers about the technology of oxidizing cyclohexane using oxygen enriched technology tail Control for Oxygen Content method and to lead.
Oxidizing cyclohexane using oxygen enriched technological reaction still gas phase contains cyclohexane and oxygen, if oxygen content exceeds standard and then might cause gas phase to fire, the present invention guarantees that by perfect tail Control for Oxygen Content method reactor gas phase oxygen content does not exceed standard in the oxidizing cyclohexane using oxygen enriched technology, thereby control fires danger.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the control method of tail oxygen content in a kind of perfect oxidizing cyclohexane using oxygen enriched technology, timely processing when gas phase tail oxygen content on-line monitoring by reactor and oxygen content superelevation is with control tail oxygen content, the gas phase oxygen content that guarantees reactor in the oxidizing cyclohexane using oxygen enriched technology does not exceed standard, thereby control fires danger.
The control method of the tail oxygen content of reaction system in a kind of oxidizing cyclohexane using oxygen enriched technology, main by reactor gas phase tail oxygen content on-line monitoring and the timely processing during the oxygen content superelevation with control tail oxygen content, pimelinketone device contains 6 reactors, be made as 1# to 6# reactor successively to the downstream from the upstream by flow process, exhaust pipe and total tail oxygen pipeline at 1#, 2#, 3# reactor respectively dispose an online oxygen analyzer, any one online oxygen analyzer numerical value exceeds standard then to start and reports to the police or interlocking, to the urgent nitrogen injection of reactor.
The present invention guarantees that the reactor gas phase can not fire when oxidizing cyclohexane using oxygen enriched, has effectively guaranteed the safety of pimelinketone device reaction system.
Preferably, report to the police when the oxygen content that analyzes when any one online oxygen analyzer surpasses certain value (value is in the 3.5%-5% interval), the workman should diagnose the oxygen content reason that exceeds standard rapidly during warning, takes the respective handling measure; Surpass certain value (value is in the 5%-8% interval) interlocking, cut off gas feed during interlocking, promptly pour nitrogen, and by the processing of stopping in emergency.
The specific embodiment
The control method of the tail oxygen content of reaction system in a kind of oxidizing cyclohexane using oxygen enriched technology, main by reactor gas phase tail oxygen content on-line monitoring and the timely processing during the oxygen content superelevation with control tail oxygen content, pimelinketone device contains 6 reactors, is made as 1 by flow process successively from the upstream to the downstream
#To 6
#Reactor respectively disposes an online oxygen analyzer at exhaust pipe and total tail oxygen pipeline of 1#, 2#, 3# reactor.Report to the police when the oxygen content that analyzes when any one online oxygen analyzer surpasses certain value (value is in the 3.5%-5% interval), the workman should diagnose the oxygen content reason that exceeds standard rapidly during warning, takes the respective handling measure; Surpass certain value (value is in the 5%-8% interval) interlocking, cut off gas feed during interlocking, promptly pour nitrogen, and by the processing of stopping in emergency.
The present invention guarantees that the reactor gas phase can not fire when oxidizing cyclohexane using oxygen enriched, has effectively guaranteed the safety of pimelinketone device reaction system.
Embodiment 1
Pimelinketone device contains 6 reactors, is made as 1# to 6# reactor successively to the downstream from the upstream by flow process, respectively disposes an online oxygen analyzer at exhaust pipe and total tail oxygen pipeline of 1#, 2#, 3# reactor.Report to the police when the oxygen content that analyzes when any one online oxygen analyzer surpasses 3.5%, the workman should diagnose the oxygen content reason that exceeds standard rapidly during warning, takes the respective handling measure, surpass 5% o'clock interlocking, cut off gas feed during interlocking, promptly pour nitrogen, and by the processing of stopping in emergency.
Embodiment 2
Pimelinketone device contains 6 reactors, is made as 1# to 6# reactor successively to the downstream from the upstream by flow process, respectively disposes an online oxygen analyzer at exhaust pipe and total tail oxygen pipeline of 1#, 2#, 3# reactor.Report to the police when the oxygen content that analyzes when any one online oxygen analyzer surpasses 4%, the workman should diagnose the oxygen content reason that exceeds standard rapidly during warning, takes the respective handling measure, surpass 6% o'clock interlocking, cut off gas feed during interlocking, promptly pour nitrogen, and by the processing of stopping in emergency.
Claims (5)
1. the control method of tail oxygen content in the oxidizing cyclohexane using oxygen enriched technology, timely processing when gas phase tail oxygen content on-line monitoring by reactor and oxygen content superelevation is with control tail oxygen content, it is characterized in that, in pimelinketone device, the exhaust pipe of the reactor of first three by flow process from the upstream to the downstream and total tail oxygen pipeline respectively dispose an online oxygen analyzer, any one online oxygen analyzer numerical value exceeds standard then to start and reports to the police or interlocking, to the urgent nitrogen injection of reactor.
2. the control method of tail oxygen content according to claim 1, it is characterized in that, pimelinketone device contains 6 reactors, is made as No. 1 to No. 6 reactor successively to the downstream from the upstream by flow process, respectively disposes an online oxygen analyzer on the exhaust pipe of No. 1, No. 2, No. 3 reactor and total tail oxygen pipeline.
3. the control method of tail oxygen content as claimed in claim 1 or 2, it is characterized in that, report to the police when the oxygen content that analyzes when any one online oxygen analyzer surpasses certain value that the workman should diagnose the oxygen content reason that exceeds standard rapidly during warning, take the respective handling measure, value is in the 3.5%-5% interval.
4. as the control method of tail oxygen content as described in the claim 3, it is characterized in that, interlock when the oxygen content that analyzes when any one online oxygen analyzer surpasses certain value, cut off gas feed during interlocking, promptly pour nitrogen, and by the processing of stopping in emergency, value is in the 5%-8% interval.
5. as the control method of tail oxygen content as described in the claim 4, it is characterized in that, report to the police when the oxygen content that analyzes when any one online oxygen analyzer surpasses 4% that the workman should diagnose the oxygen content reason that exceeds standard rapidly during warning, takes the respective handling measure; Surpass 6% o'clock interlocking, cut off gas feed during interlocking, promptly pour nitrogen, and by the processing of stopping in emergency.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105227545A CN102029134A (en) | 2010-10-28 | 2010-10-28 | Control method of tail oxygen content in oxygen-enriched oxidation process of cyclohexane |
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| CN2010105227545A CN102029134A (en) | 2010-10-28 | 2010-10-28 | Control method of tail oxygen content in oxygen-enriched oxidation process of cyclohexane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007675A (en) * | 2014-04-11 | 2014-08-27 | 中国石油化工股份有限公司 | Control method for preventing explosion of oxidized tail gas in technology for producing hydrogen peroxide with anthraquinone method |
| CN104778811A (en) * | 2015-04-20 | 2015-07-15 | 中国石油化工股份有限公司 | Alarming method for gas-liquid phase reaction kettle in startup ventilation process |
| CN107219823A (en) * | 2016-03-22 | 2017-09-29 | 中国石油化工股份有限公司 | Under the conditions of fresh catalyst in the tail gas of cyclohexanone oxamidinating technique oxygen content method of controlling security |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007675A (en) * | 2014-04-11 | 2014-08-27 | 中国石油化工股份有限公司 | Control method for preventing explosion of oxidized tail gas in technology for producing hydrogen peroxide with anthraquinone method |
| CN104778811A (en) * | 2015-04-20 | 2015-07-15 | 中国石油化工股份有限公司 | Alarming method for gas-liquid phase reaction kettle in startup ventilation process |
| CN107219823A (en) * | 2016-03-22 | 2017-09-29 | 中国石油化工股份有限公司 | Under the conditions of fresh catalyst in the tail gas of cyclohexanone oxamidinating technique oxygen content method of controlling security |
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Application publication date: 20110427 |