CN109280013A - A method of automatically switching hydrogenation source - Google Patents
A method of automatically switching hydrogenation source Download PDFInfo
- Publication number
- CN109280013A CN109280013A CN201710594891.1A CN201710594891A CN109280013A CN 109280013 A CN109280013 A CN 109280013A CN 201710594891 A CN201710594891 A CN 201710594891A CN 109280013 A CN109280013 A CN 109280013A
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- China
- Prior art keywords
- hydrogen
- recycling
- outsourcing
- source
- hydrogenation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C213/00—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
- C07C213/02—Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions involving the formation of amino groups from compounds containing hydroxy groups or etherified or esterified hydroxy groups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
The invention discloses a kind of methods for automatically switching hydrogenation source, which is characterized in that the hydrogen source is to recycle based on the hydrogen of dehydration processes, supplemented by outsourcing hydrogen make；Wherein, recycling hydrogen usage is 80%, outsourcing hydrogen usage 20%；The dehydration processes Hydrogen Vapor Pressure of recycling is 0.8MPa, is directly used in hydrogenation process after surge tank buffers；Outsourcing bottled hydrogen or long tube vehicle Hydrogen Vapor Pressure are 15MPa, and increased pressure is that 0.8MPa is used for hydrogenation process.For the present invention by automatically controlling to greatest extent using recycling hydrogen, reaching reduces cost purpose；And controlled by PLC system and realize and automatically switch, a large amount of manpowers can be both reduced in this way, while the too low situation of device capbility caused by solving because of artificial inspection not in time；Compared with prior art, it has the characteristics that economize on resources, reduces manpower, reduces cost.
Description
Technical field
The present invention relates to switching hydrogenation source technology field, more particularly to a kind of automatic switchover hydrogenation source
Method.
Background technique
Present isopropyl methoxalamine industrialized production mainly includes following three processes:
(1) propylene glycol monomethyl ether dehydrogenation methoxy acetone
(2) methoxy acetone and 2- ethyl -6- methylaniline are by adding hydrogen condensation to generate 2- ethyl -6- methyl-N- (1 ' -
Methoxyl group -2 '-propyl) aniline (abbreviation amidogen ether), t=50 DEG C of reaction condition, p=0.5-0.8MPa
Amidogen ether is reacted with chloracetyl chloride generates isopropyl methoxalamine.Wherein the preparation of amidogen ether is the key that production isopropyl methoxalamine
Step.
The hydrogen source in hydrogenation process mainly has following three aspects at present:
(1) bottled hydrogen or long tube vehicle hydrogen are bought.
(2) self-built hydrogen generator station, with methanol conversion or ammonia cracking hydrogen production.
Methanol reforming hydrogen manufacturing: CH3OH→CO+2H2 CO+H2O→CO2+H2
Ammonia cracking hydrogen production: 2NH3-3H2+N2
(3) it recycles the hydrogen of dehydration processes and outsourcing hydrogen combines
Therefore, how to provide a kind of with the automatic switchover hydrogenation source for economizing on resources, reducing manpower, reducing cost characteristics
Method the problem of being those skilled in the art's urgent need to resolve.
Summary of the invention
In view of this, the present invention provides a kind of with the automatic switchover for economizing on resources, reducing manpower, reducing cost characteristics
The method in hydrogenation source.
To achieve the above object, the invention provides the following technical scheme:
A method of automatically switching hydrogenation source, which is characterized in that the hydrogen source is to recycle the hydrogen of dehydration processes
Based on, supplemented by outsourcing hydrogen make；Wherein, recycling hydrogen usage is 80%, outsourcing hydrogen usage 20%；The recycling hydrogen pressure
Power is 0.8MPa；The outsourcing Hydrogen Vapor Pressure is 15MPa.
Preferably, in a kind of above-mentioned method for automatically switching hydrogenation source, the recycling hydrogen of dehydration processes and outer is recycled
Purchase the mutual switching between hydrogen phase；Recycle the mutual switching between dehydration processes and self-built hydrogen station hydrogen supply；Other two kinds or
Two or more gas sources supply the mutual switching between the gas source of same device.
It can be seen via above technical scheme that compared with prior art, automatically switching to add the present disclosure provides a kind of
The method of hydrogen source, which is characterized in that the hydrogen source is to recycle based on the hydrogen of dehydration processes, supplemented by outsourcing hydrogen make；
Wherein, recycling hydrogen usage is 80%, outsourcing hydrogen usage 20%；The dehydration processes Hydrogen Vapor Pressure of recycling is 0.8MPa, through slow
Hydrogenation process is directly used in after rushing tank buffering；Outsourcing bottled hydrogen or long tube vehicle Hydrogen Vapor Pressure are 15MPa, and increased pressure is
0.8MPa is used for hydrogenation process.For the present invention by automatically controlling to greatest extent using recycling hydrogen, reaching reduces cost purpose；
And controlled by PLC system and realize automatic switchover, a large amount of manpowers can be both reduced in this way, while being solved because artificial inspection is too late
The too low situation of Shi Zaocheng device capbility；Compared with prior art, it has the spy economize on resources, reduce manpower, reducing cost
Point.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawing is flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of automatic switchovers with economize on resources, reduce manpower, reduction cost characteristics to add
The method of hydrogen source.
Attached drawing 1 is please referred to, for a kind of method for automatically switching hydrogenation source disclosed by the invention, is specifically included:
The hydrogen source is to recycle based on the hydrogen of dehydration processes, supplemented by outsourcing hydrogen make；Wherein, hydrogen usage is recycled
It is 80%, outsourcing hydrogen usage 20%；The recycling Hydrogen Vapor Pressure is 0.8MPa；The outsourcing Hydrogen Vapor Pressure is 15MPa.
For the present invention by automatically controlling to greatest extent using recycling hydrogen, reaching reduces cost purpose；And pass through PLC
System control, which is realized, automatically switches, and can both reduce a large amount of manpowers in this way, while device caused by solving because of artificial inspection not in time
The too low situation of production capacity；Compared with prior art, it has the characteristics that economize on resources, reduces manpower, reduces cost.
In order to further optimize the above technical scheme, to recycle based on the hydrogen of dehydration processes, supplemented by outsourcing hydrogen make
Method as hydrogen source for hydrogenation system (recycling hydrogen usage be 80%, outsourcing hydrogen usage 20%).By controlling automatically
For system to greatest extent using recycling hydrogen, reaching reduces cost purpose.
In order to further optimize the above technical scheme, the dehydration processes Hydrogen Vapor Pressure of recycling is 0.8MPa, slow through surge tank
Hydrogenation process is directly used in after punching.Outsourcing bottled hydrogen or long tube vehicle Hydrogen Vapor Pressure are 15MPa, and increased pressure is 0.8MPa use
In hydrogenation process.
In order to further optimize the above technical scheme, hydrogenation reaction early period, since reactant concentration is high, reaction rate is fast,
Big with amounts of hydrogen, reacting kettle inner pressure is low, thus recycles hydrogen using not storable low pressure.The hydrogenation reaction later period, due to anti-
The reduction of object concentration is answered, reaction rate reduces, reduced with amounts of hydrogen, reacting kettle inner pressure increases, and utilizes storable outsourcing hydrogen.
It in order to further optimize the above technical scheme, is the Hydrogen Vapor Pressure and hydrogen of hydrogen recovery system during balanced production
The storage problem of tolerance, every reaction kettle initial reaction stage is using recycling hydrogen, when pressure reaches certain setting in air inflow and kettle
When numerical value, automatically switch in outsourcing hydrogen gas lines.Material in reactor is set to continue the successive reaction in the case where being not less than current pressure,
Until reaching reaction end.Other reaction kettles also press the progress of this program.Recycling hydrogen system pressure mistake can be avoided the occurrence of in this way
The case where high or reaction later period, reaction rate reduced due to hypotony.
In order to further optimize the above technical scheme, because in production process reaction kettle quantity it is more, and same time every
Reactiveness locating for reaction kettle is different, unstable with hydrogen.It depends merely on artificial inspection and adjusts intake valve size, switch gas source pipe
Line, not only heavy workload, the reactiveness for fully meeting each kettle are also extremely difficult.For this purpose, by giving flowmeter and pressure gauge
Certain numerical value is set, is controlled by PLC system and realizes automatic switchover, can both reduce a large amount of manpowers in this way, while solving because of people
The situation for causing device capbility too low not in time for inspection.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (2)
1. a kind of method for automatically switching hydrogenation source, which is characterized in that the hydrogen source is with the hydrogen for recycling dehydration processes
It is main, supplemented by outsourcing hydrogen make；Wherein, recycling hydrogen usage is 80%, outsourcing hydrogen usage 20%；The recycling Hydrogen Vapor Pressure
For 0.8MPa；The outsourcing Hydrogen Vapor Pressure is 15MPa.
2. a kind of method for automatically switching hydrogenation source according to claim 1, which is characterized in that method includes: recycling
Mutual switching between the recycling hydrogen and outsourcing hydrogen phase of dehydration processes；It recycles between dehydration processes and self-built hydrogen station hydrogen supply
Mutual switching；Other two or more gas sources supply the mutual switching between the gas source of same device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594891.1A CN109280013A (en) | 2017-07-19 | 2017-07-19 | A method of automatically switching hydrogenation source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594891.1A CN109280013A (en) | 2017-07-19 | 2017-07-19 | A method of automatically switching hydrogenation source |
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| Publication Number | Publication Date |
|---|---|
| CN109280013A true CN109280013A (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710594891.1A Pending CN109280013A (en) | 2017-07-19 | 2017-07-19 | A method of automatically switching hydrogenation source |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203498281U (en) * | 2013-10-15 | 2014-03-26 | 平顶山市神马万里化工股份有限公司 | Hydrogen replenishing system used in crude benzene refining |
| CN104445068A (en) * | 2014-11-21 | 2015-03-25 | 山东侨昌化学有限公司 | Recovery method of by-product hydrogen in production process of metolachlor |
| CN105523947A (en) * | 2016-01-19 | 2016-04-27 | 江苏长青农化南通有限公司 | Refined metolachlor continuous asymmetric hydrogenation reaction process |
| CN205328609U (en) * | 2016-01-26 | 2016-06-22 | 平顶山市神马万里化工股份有限公司 | Hydrogeneous tail gas recycle system of cyclohexanol apparatus for producing |
| CN205560277U (en) * | 2016-03-22 | 2016-09-07 | 南京晨虹氢业有限公司 | Hydrogen busbar electric system |
-
2017
- 2017-07-19 CN CN201710594891.1A patent/CN109280013A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203498281U (en) * | 2013-10-15 | 2014-03-26 | 平顶山市神马万里化工股份有限公司 | Hydrogen replenishing system used in crude benzene refining |
| CN104445068A (en) * | 2014-11-21 | 2015-03-25 | 山东侨昌化学有限公司 | Recovery method of by-product hydrogen in production process of metolachlor |
| CN105523947A (en) * | 2016-01-19 | 2016-04-27 | 江苏长青农化南通有限公司 | Refined metolachlor continuous asymmetric hydrogenation reaction process |
| CN205328609U (en) * | 2016-01-26 | 2016-06-22 | 平顶山市神马万里化工股份有限公司 | Hydrogeneous tail gas recycle system of cyclohexanol apparatus for producing |
| CN205560277U (en) * | 2016-03-22 | 2016-09-07 | 南京晨虹氢业有限公司 | Hydrogen busbar electric system |
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