CN105017178A - Deoxidation method for HPPO technology mixed gas - Google Patents
Deoxidation method for HPPO technology mixed gas Download PDFInfo
- Publication number
- CN105017178A CN105017178A CN201510496104.0A CN201510496104A CN105017178A CN 105017178 A CN105017178 A CN 105017178A CN 201510496104 A CN201510496104 A CN 201510496104A CN 105017178 A CN105017178 A CN 105017178A
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- deoxidation
- propylene
- gas mixture
- hydrogen
- oxygen
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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
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- 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)
- Epoxy Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a deoxidation method for HPPO technology mixed gas. The problems that in the prior art, a propylene buffering tank is prone to burning and explosion, and nitrogen consumption is large are mainly solved. By the adoption of the deoxidation method for the HPPO technology mixed gas, a deoxidation reactor is arranged between a circular propylene compressor and the propylene buffering tank, the technology mixed gas and hydrogen are mixed through a gas mixer, then enter the deoxidation reactor and make contact with a catalyst, the catalyst makes oxygen and the hydrogen to react while propylene does not react with the hydrogen, materials at an outlet of the deoxidation reactor enter the propylene buffering tank, and the technical scheme well solves the problems. The deoxidation method can be used for deoxidizing the HPPO technology mixed gas.
Description
Technical field
The present invention relates to a kind of method of deoxidation of HPPO technique gas mixture.
Background technology
Propylene oxide is very important organic compound raw material, is the third-largest propylene analog derivative being only second to polypropylene and vinyl cyanide.Propylene oxide has two large main applications, and one is for the production of propylene dibasic alcohol, and one is used to produce polyvalent alcohol.Polyvalent alcohol is the main raw material producing urethane, and polyurethane material purposes widely, can replace rubber, nylon etc. for multiple occasion, as lagging material, coating, sizing agent, foam, elastomerics etc.And propylene dibasic alcohol is the main raw of production cosmetic, wetting Agent for Printing Inks, deicing fluid, lubricating fluid additive.
HPPO (hydrogene peroxide propylene oxide) technique is a kind of novel Synthesis of Propylene Oxide, this technique is using hydrogen peroxide and propylene as raw material, reaction generates propylene oxide and water, compare conventional epoxy oxide production process, HPPO technique has that clean environment firendly, Infrastructure are few, the advantage of no coupling product, but this technique also exists corresponding problem.Can there is decomposition in hydrogen peroxide in technological process, and the concentration of oxygen in circulation propylene is increased, and easily produces and fire operating mode, and then cause danger classes to raise in propylene surge tank.
CN201310076350.1 provides a kind of method of deoxidation of coalbed methane containing oxygen, it is characterized in that: coalbed methane containing oxygen and artificial coal gas are passed into and is equipped with in the reactor of catalyzer, under the effect of catalyzer, make the oxygen in the carbon monoxide in artificial coal gas and hydrogen and coal-seam gas carry out reacting and generate carbonic acid gas and water and reach the object removing oxygen.
Industrial in order to address this problem the method adopting nitrogen dilution or discharge torch, the method nitrogen consumption of nitrogen dilution is large, and the method propylene of discharge torch is wasted in a large number, and two kinds of methods all have impact on economic benefit.Therefore develop suitable deoxidization technique and deoxidation treatment carried out to this circulation propylene, to reduction plant energy consumption, increase economic efficiency significant.
Summary of the invention
Technical problem to be solved by this invention is the problem that in prior art, propylene surge tank easily fires, nitrogen consumption is large, provides a kind of method of deoxidation of new HPPO technique gas mixture.The method is used for, in the deoxidation of HPPO technique gas mixture, having the advantage that propylene surge tank is not easy to blast, nitrogen consumption is little.
For solving the problem, the technical solution used in the present invention is as follows: a kind of method of deoxidation of HPPO technique gas mixture, produce between the circulation propylene compressor of propylene oxide full scale plant and propylene surge tank at peroxide passivation and deoxidation reactor is set, the technique gas mixture of described full scale plant and hydrogen enter deoxidation reactor after gas mixer mixing, with catalyst exposure, described catalyzer can make that oxygen and hydrogen react and propylene and hydrogen do not react, and deoxidation reactor outlet material enters propylene surge tank; Wherein, the technique gas mixture pipeline before entering gas mixer arranges oxygen content analyser, and form three with the feed valve on hydrogen pipeline and get two interlocked control, control the aperture of hydrogen feed valve; Establish oxygen content analyser at deoxidation reactor top, and form three with the control valve put on scare line at deoxidation reactor top and get two interlocked control, start interlocking when oxygen volume content is more than 5%, deoxidation reactor top gas mixture is disposed to torch; Propylene surge tank arranges oxygen content analyser, and forms three with the control valve put on scare line on propylene surge tank and get two interlocked control, start interlocking when oxygen volume content is more than 5%, the gas mixture of propylene surge tank is disposed to torch.
In technique scheme, preferably, measure the oxygen content of deoxidation reactor import and outlet, calculate the DNA vaccine of catalyzer, the DNA vaccine of described catalyzer is greater than 90%.
In technique scheme, preferably, the reaction conditions of described deoxidation reactor is: temperature of reaction is 50 ~ 100 DEG C; Reaction pressure is 0 ~ 0.5MPaA.
In technique scheme, preferably, described catalyzer is precious metal palladium system dehydrogenation catalyst.
In technique scheme, preferably, when the oxygen volume content at deoxidation reactor top is more than 1% alarm, after reporting to the police, operator need check hydrogen inlet, temperature of reaction and the residence time, and the activity of sampling and testing catalyzer.
The present invention can remove peroxide passivation and produce oxygen after propylene oxide reaction in gas mixture, reduce the oxygen concentration in gas mixture, the inside oxygen level of propylene surge tank in technique is not exceeded standard, does not form the system of firing, the safety of effective guarantee device reaction system; Decrease simultaneously the consumption of the method nitrogen of original nitrogen dilution and oxygen too high time propylene row torch a large amount of wastes, improve economic benefit, achieve good technique effect.
Below by embodiment, the invention will be further elaborated, but be not limited only to the present embodiment.
Embodiment
[embodiment 1]
A kind of method of deoxidation of HPPO technique gas mixture, produce between the circulation propylene compressor of propylene oxide full scale plant and propylene surge tank at peroxide passivation and deoxidation reactor is set, the technique gas mixture of described full scale plant and hydrogen enter deoxidation reactor after gas mixer mixing, with catalyst exposure, described catalyzer is precious metal palladium system dehydrogenation catalyst.The reaction conditions of described deoxidation reactor is: temperature of reaction is 100 DEG C, and reaction pressure is 0.5MPaA.Described catalyzer can make that oxygen and hydrogen react and propylene and hydrogen do not react, and deoxidation reactor outlet material enters propylene surge tank; Wherein, the technique gas mixture pipeline before entering gas mixer arranges oxygen content analyser, and form three with the feed valve on hydrogen pipeline and get two interlocked control, control the aperture of hydrogen feed valve, namely control the mol ratio of hydrogen and oxygen; Oxygen content analyser is established at deoxidation reactor top, and form three with the control valve put on scare line at deoxidation reactor top and get two interlocked control, when the oxygen volume content at deoxidation reactor top is more than 1% alarm, after reporting to the police, operator need check hydrogen inlet, temperature of reaction and the residence time, and the activity of sampling and testing catalyzer.Start interlocking when oxygen volume content is more than 5%, deoxidation reactor top gas mixture is disposed to torch; Propylene surge tank arranges oxygen content analyser, and forms three with the control valve put on scare line on propylene surge tank and get two interlocked control, start interlocking when oxygen volume content is more than 5%, the gas mixture of propylene surge tank is disposed to torch.
[embodiment 2]
According to the condition described in embodiment 1 and step, the reaction conditions of described deoxidation reactor is: temperature of reaction is 50 DEG C, and reaction pressure is normal pressure.
[embodiment 3]
According to the condition described in embodiment 1 and step, the reaction conditions of described deoxidation reactor is: temperature of reaction is 80 DEG C, and reaction pressure is 0.2MPaA.
Obviously, method of the present invention can remove the oxygen in peroxide passivation production propylene oxide tail gas, reduces the oxygen concentration in gas mixture, the inside oxygen level of propylene surge tank in technique is not exceeded standard, do not form the system of firing, the safety of effective guarantee device reaction system; Decrease simultaneously the consumption of nitrogen and oxygen too high time propylene row torch a large amount of wastes, improve economic benefit.
Claims (5)
1. the method for deoxidation of a HPPO technique gas mixture, produce between the circulation propylene compressor of propylene oxide full scale plant and propylene surge tank at peroxide passivation and deoxidation reactor is set, the technique gas mixture of described full scale plant and hydrogen enter deoxidation reactor after gas mixer mixing, with catalyst exposure, described catalyzer can make that oxygen and hydrogen react and propylene and hydrogen do not react, and deoxidation reactor outlet material enters propylene surge tank; Wherein, the technique gas mixture pipeline before entering gas mixer arranges oxygen content analyser, and form three with the feed valve on hydrogen pipeline and get two interlocked control, control the aperture of hydrogen feed valve; Establish oxygen content analyser at deoxidation reactor top, and form three with the control valve put on scare line at deoxidation reactor top and get two interlocked control, start interlocking when oxygen volume content is more than 5%, deoxidation reactor top gas mixture is disposed to torch; Propylene surge tank arranges oxygen content analyser, and forms three with the control valve put on scare line on propylene surge tank and get two interlocked control, start interlocking when oxygen volume content is more than 5%, the gas mixture of propylene surge tank is disposed to torch.
2. the method for deoxidation of a kind of HPPO technique gas mixture according to claim 1, is characterized in that measuring the oxygen content of deoxidation reactor import and outlet, and calculate the DNA vaccine of catalyzer, the DNA vaccine of described catalyzer is greater than 90%.
3. the method for deoxidation of a kind of HPPO technique gas mixture according to claim 1, is characterized in that the reaction conditions of described deoxidation reactor is: temperature of reaction is 50 ~ 100 DEG C; Reaction pressure is 0 ~ 0.5MPaA.
4. the method for deoxidation of a kind of HPPO technique gas mixture according to claim 1, is characterized in that described catalyzer is precious metal palladium system dehydrogenation catalyst.
5. the method for deoxidation of a kind of HPPO technique gas mixture according to claim 1, it is characterized in that when the oxygen volume content at deoxidation reactor top is more than 1% alarm, after reporting to the police, operator need check hydrogen inlet, temperature of reaction and the residence time, and the activity of sampling and testing catalyzer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496104.0A CN105017178B (en) | 2015-08-13 | 2015-08-13 | The method of deoxidation of HPPO technique gaseous mixtures |
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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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| CN105017178A true CN105017178A (en) | 2015-11-04 |
| CN105017178B CN105017178B (en) | 2017-12-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642082A (en) * | 2016-01-08 | 2016-06-08 | 河南骏化发展股份有限公司 | Tail gas treatment device and process for preparing epoxy propane through hydrogen peroxide epoxidation propylene |
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 |
Non-Patent Citations (1)
| Title |
|---|
| 王松汉: "《石油化工设计手册》", 31 January 2002, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642082A (en) * | 2016-01-08 | 2016-06-08 | 河南骏化发展股份有限公司 | Tail gas treatment device and process for preparing epoxy propane through hydrogen peroxide epoxidation propylene |
| 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 |
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| CN105017178B (en) | 2017-12-19 |
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Effective date of registration: 20170927 Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant after: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. Applicant after: Sinopec Corp. Address before: 100728 Chaoyangmen street, Beijing, No. 22, No. Applicant before: Sinopec Corp. Applicant before: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. |
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