CN105017178B - The method of deoxidation of HPPO technique gaseous mixtures - Google Patents
The method of deoxidation of HPPO technique gaseous mixtures Download PDFInfo
- Publication number
- CN105017178B CN105017178B CN201510496104.0A CN201510496104A CN105017178B CN 105017178 B CN105017178 B CN 105017178B CN 201510496104 A CN201510496104 A CN 201510496104A CN 105017178 B CN105017178 B CN 105017178B
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- deoxidation
- propylene
- hydrogen
- surge tank
- deoxidation reactor
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/12—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with hydrogen peroxide or inorganic peroxides or peracids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/04—Compounds containing oxirane rings containing only hydrogen and carbon atoms in addition to the ring oxygen atoms
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Epoxy Compounds (AREA)
Abstract
The present invention relates to a kind of method of deoxidation of HPPO techniques gaseous mixture, mainly solves the problems, such as that propylene surge tank easily fires in the prior art, nitrogen consumption is big.The present invention is by using a kind of method of deoxidation of HPPO techniques gaseous mixture, deoxidation reactor is set between circulation propylene compressor and propylene surge tank, technique gaseous mixture and hydrogen enter deoxidation reactor after gas mixer mixes, contacted with catalyst, the catalyst can make oxygen and hydrogen reacts and propylene and hydrogen do not react, the technical scheme that deoxidation reactor outlet material enters propylene surge tank preferably solves above mentioned problem, in the deoxidation available for HPPO technique gaseous mixtures.
Description
Technical field
The present invention relates to a kind of method of deoxidation of HPPO techniques gaseous mixture.
Background technology
Expoxy propane is very important organic compound raw material, is the third-largest propylene for being only second to polypropylene and acrylonitrile
Analog derivative.Expoxy propane has two big main applications, first, for producing propylene dihydric alcohol, first, for producing polyalcohol.It is more
First alcohol is the primary raw material for producing polyurethane, and polyurethane material purposes is very extensive, rubber, nylon etc. can be replaced to be used for a variety of
Occasion, such as insulation material, coating, adhesive, foam, elastomer.And propylene dihydric alcohol is production cosmetics, NMF, prevented
Freeze liquid, lubricate the main material of solution additive.
HPPO (hydrogene peroxide propylene oxide) technique is a kind of new production of propylene oxide
Technique, the technique are given birth to using hydrogen peroxide and propylene as raw material, reaction generation expoxy propane and water compared to conventional epoxy propane
Production. art, HPPO techniques have the advantages of few clean environment firendly, infrastructure, no coupling product, but there is also ask accordingly for the technique
Topic.Decomposition can occur for hydrogen peroxide in technical process so that the concentration of oxygen increases in circulation propylene, in propylene surge tank
It is also easy to produce and fires operating mode, and then causes danger classes to raise.
CN201310076350.1 provides a kind of method of deoxidation of coalbed methane containing oxygen, it is characterized in that：By coalbed methane containing oxygen
It is passed through with artificial coal gas in the reactor equipped with catalyst, carbon monoxide and hydrogen in artificial coal gas is made in the presence of catalyst
Gas carries out reaction generation carbon dioxide and water with the oxygen in coal bed gas and reaches the purpose of removing oxygen.
The method for industrially diluting to solve this problem using nitrogen or discharging torch, the method nitrogen of nitrogen dilution
Consumption is big, and the method propylene for discharging torch largely wastes, and both of which have impact on economic benefit.Therefore develop suitable de-
Oxygen technique to the circulation propylene carry out deoxidation treatment, to reduce plant energy consumption, increase economic efficiency it is significant.
The content of the invention
The technical problems to be solved by the invention, which are that propylene surge tank easily fires, nitrogen consumption is big in the prior art, asks
A kind of topic, there is provided method of deoxidation of new HPPO technique gaseous mixtures.This method is used in the deoxidation of HPPO technique gaseous mixtures, has
The advantages of propylene surge tank is not easy to blast, nitrogen consumption is small.
To solve the above problems, the technical solution adopted by the present invention is as follows：A kind of method of deoxidation of HPPO techniques gaseous mixture,
Deoxidation reactor is set between the circulation propylene compressor and propylene surge tank of peroxide passivation production expoxy propane commercial plant,
The technique gaseous mixture and hydrogen of the commercial plant enter deoxidation reactor after gas mixer mixes, and are contacted with catalyst,
The catalyst can make oxygen and hydrogen reacts and propylene and hydrogen do not react, and deoxidation reactor outlet material enters
Propylene surge tank；Wherein, oxygen content analyzer, and and hydrogen are set on the technique gaseous mixture pipeline before entering gas mixer
Inlet valve on air pipe forms two from three interlocked control, controls the aperture of hydrogen inlet valve；Oxygen is set at the top of deoxidation reactor
Gas content analyzer, and two from three interlocked control is formed with the control valve put on flare line at the top of deoxidation reactor, work as oxygen
Start interlocking when volume content is more than 5%, gaseous mixture is emitted into torch at the top of deoxidation reactor；Oxygen is set on propylene surge tank
Gas content analyzer, and two from three interlocked control is formed with the control valve put on flare line on propylene surge tank, work as oxysome
Start interlocking when product content is more than 5%, the gaseous mixture of propylene surge tank is emitted into torch.
In above-mentioned technical proposal, it is preferable that deoxidation reactor import is measured with the oxygen content exported, calculating is urged
The DNA vaccine of agent, the DNA vaccine of the catalyst are more than 90%.
In above-mentioned technical proposal, it is preferable that the reaction condition of the deoxidation reactor is：Reaction temperature is 50~100 DEG C；
Reaction pressure is 0~0.5MPaA.
In above-mentioned technical proposal, it is preferable that the catalyst is precious metal palladium system dehydrogenation catalyst.
In above-mentioned technical proposal, it is preferable that the oxygen volume content at the top of deoxidation reactor is more than 1% alarm, report
Operating personnel need to check hydrogen inlet, reaction temperature and residence time, and the activity of sampling and testing catalyst after police.
The present invention can remove the oxygen in gaseous mixture after peroxide passivation production expoxy propane reacts, and reduce in gaseous mixture
Oxygen concentration so that the inside oxygen content of propylene surge tank is not exceeded in technique, does not form the system of firing, and effective guarantee device is anti-
Answer the safety of system；Propylene row's torch when reducing the consumption and too high oxygen of the method nitrogen of original nitrogen dilution simultaneously
It is a large amount of to waste, economic benefit is improved, achieves preferable technique effect.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Embodiment
【Embodiment 1】
A kind of method of deoxidation of HPPO techniques gaseous mixture, in the circulation propylene of peroxide passivation production expoxy propane commercial plant
Deoxidation reactor is set between compressor and propylene surge tank, and the technique gaseous mixture and hydrogen of the commercial plant are through gas mixing
Enter deoxidation reactor after device mixing, contacted with catalyst, the catalyst is precious metal palladium system dehydrogenation catalyst.The deoxidation
The reaction condition of reactor is：Reaction temperature is 100 DEG C, reaction pressure 0.5MPaA.The catalyst can make oxygen and hydrogen
React and propylene and hydrogen do not react, deoxidation reactor outlet material enters propylene surge tank；Wherein, into gas
Oxygen content analyzer is set on the technique gaseous mixture pipeline before body blender, and forms three with the inlet valve on hydrogen pipeline and takes
Two interlocked controls, the aperture of hydrogen inlet valve is controlled, that is, control the mol ratio of hydrogen and oxygen；Oxygen is set at the top of deoxidation reactor
Gas content analyzer, and two from three interlocked control is formed with the control valve put on flare line at the top of deoxidation reactor, when de-
Oxygen volume content at the top of oxygen reactor is more than 1% alarm, and operating personnel need to check hydrogen inlet, reaction temperature after alarm
Degree and residence time, and the activity of sampling and testing catalyst.Start interlocking, deoxidation reactor when oxygen volume content is more than 5%
Top gaseous mixture is emitted into torch；On propylene surge tank set oxygen content analyzer, and with setting fire on propylene surge tank
Control valve on torch pipe line forms two from three interlocked control, starts interlocking when oxygen volume content is more than 5%, propylene surge tank
Gaseous mixture is emitted into torch.
【Embodiment 2】
According to the condition and step described in embodiment 1, the reaction condition of the deoxidation reactor is：Reaction temperature is 50
DEG C, reaction pressure is normal pressure.
【Embodiment 3】
According to the condition and step described in embodiment 1, the reaction condition of the deoxidation reactor is：Reaction temperature is 80
DEG C, reaction pressure 0.2MPaA.
Obviously, method of the invention can remove the oxygen in peroxide passivation production expoxy propane tail gas, reduce gaseous mixture
In oxygen concentration so that the inside oxygen content of propylene surge tank is not exceeded in technique, does not form the system of firing, effective guarantee dress
Put the safety of reaction system；A large amount of wastes of propylene row torch, are improved when reducing the consumption and too high oxygen of nitrogen simultaneously
Economic benefit.
Claims (1)
- A kind of 1. method of deoxidation of HPPO techniques gaseous mixture, in the circulation propylene pressure of peroxide passivation production expoxy propane commercial plant Deoxidation reactor is set between contracting machine and propylene surge tank, and the technique gaseous mixture and hydrogen of the commercial plant are through gas mixer Enter deoxidation reactor after mixing, contacted with catalyst, the catalyst can make oxygen and hydrogen react and propylene and hydrogen Gas does not react, and deoxidation reactor outlet material enters propylene surge tank；Wherein, the technique before gas mixer is entered is mixed Close and oxygen content analyzer is set on air pipe, and two from three interlocked control is formed with the inlet valve on hydrogen pipeline, control hydrogen The aperture of gas inlet valve；Set oxygen content analyzer at the top of deoxidation reactor, and with the torch pipe of setting fire at the top of deoxidation reactor Control valve on line forms two from three interlocked control, starts interlocking when oxygen volume content is more than 5%, is mixed at the top of deoxidation reactor Close gas and be emitted into torch；Oxygen content analyzer is set on propylene surge tank, and with putting flare line on propylene surge tank On control valve formed two from three interlocked control, when oxygen volume content is more than 5% start interlocking, the gaseous mixture of propylene surge tank It is emitted into torch；Deoxidation reactor import is measured with the oxygen content exported, calculates the DNA vaccine of catalyst, it is described to urge The DNA vaccine of agent is more than 90%；The reaction condition of the deoxidation reactor is：Reaction temperature is 50~100 DEG C；Reaction pressure For 0~0.5MPa；The catalyst is precious metal palladium system dehydrogenation catalyst；Oxygen volume content at the top of deoxidation reactor surpasses 1% alarm is crossed, operating personnel need to check hydrogen inlet, reaction temperature and residence time after alarm, and sampling and testing is catalyzed The activity of agent.
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| CN201510496104.0A CN105017178B (en) | 2015-08-13 | 2015-08-13 | The method of deoxidation of HPPO technique gaseous mixtures |
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| CN105017178B true CN105017178B (en) | 2017-12-19 |
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| CN105642082B (en) * | 2016-01-08 | 2018-06-15 | 河南骏化发展股份有限公司 | Hydrogen peroxide epoxidation propylene prepares the exhaust gas processing device and technique of propylene oxide |
| CN115707508B (en) * | 2021-08-19 | 2024-10-22 | 中国石油化工股份有限公司 | Application of gaseous alkane in treatment of tail gas containing chloropropene and oxygen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943650A (en) * | 1989-01-30 | 1990-07-24 | The Boc Group, Inc. | Process for the production of nitriles |
| CN101223152A (en) * | 2005-06-29 | 2008-07-16 | 巴斯福股份公司 | Process for producing propylene oxide |
| CN102103368A (en) * | 2010-10-27 | 2011-06-22 | 中国石油化工股份有限公司 | Method for monitoring and controlling reactor oxygen concentration in epichlorohydrin production process |
-
2015
- 2015-08-13 CN CN201510496104.0A patent/CN105017178B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4943650A (en) * | 1989-01-30 | 1990-07-24 | The Boc Group, Inc. | Process for the production of nitriles |
| CN101223152A (en) * | 2005-06-29 | 2008-07-16 | 巴斯福股份公司 | Process for producing propylene oxide |
| CN102103368A (en) * | 2010-10-27 | 2011-06-22 | 中国石油化工股份有限公司 | Method for monitoring and controlling reactor oxygen concentration in epichlorohydrin production process |
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