CN107676627A - The method of controlling security of producing ethylene with acetylene hydrogenation device - Google Patents
The method of controlling security of producing ethylene with acetylene hydrogenation device Download PDFInfo
- Publication number
- CN107676627A CN107676627A CN201711020298.2A CN201711020298A CN107676627A CN 107676627 A CN107676627 A CN 107676627A CN 201711020298 A CN201711020298 A CN 201711020298A CN 107676627 A CN107676627 A CN 107676627A
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- Prior art keywords
- acetylene
- hydrogen
- sets
- instrument
- producing ethylene
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/02—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
- C07C5/08—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of carbon-to-carbon triple bonds
- C07C5/09—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of carbon-to-carbon triple bonds to carbon-to-carbon double bonds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
-
- 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
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of method of controlling security of producing ethylene with acetylene hydrogenation device, including hydrogen gas pipeline and acetylene air inlet pipeline, hydrogen gas pipeline is provided with two sets of hydrogen flowing quantity instrument, a set of hydrogen stop valve and a set of hydrogen regulating valve, the acetylene air inlet pipeline is provided with two sets of acetylene flow instruments, a set of acetylene interlocking stop valve and a set of acetylene regulating valve, in addition to a set of PLC control system；Using the regulation of acetylene single loop and adoption rate setting regulation hydrogen loop, ensure that hydrogen, alkynes ratio are more than 1/3, so as to reduce acetylene partial pressure, ensure the safety of whole control method, while acetylene partial pressure is controlled, hydrogen alkynes ratio is accurately controlled as far as possible, so as to reduce hydrogen circulation amount, reaches safety, low consumption, the purpose of environmental protection.
Description
Technical field
The present invention relates to a kind of producing ethylene with acetylene hydrogenation technology, more particularly to a kind of safety of producing ethylene with acetylene hydrogenation device
Control method.
Background technology
Producing ethylene with acetylene hydrogenation is technology newly developed, lacks control method, according to experimental data, when hydrogen alkynes ratio is 1:When 3,
Reaction generation ethylene efficiency highest, according to the characteristic of acetylene, can explode as its hypertonia (1.5MPa), it is therefore necessary to
The pressure of accurate control acetylene, meanwhile, reaction pressure is higher, and the volume of reactor is smaller, is advantageous to industrialization and scale, because
This just needs under the premise that security is guaranteed, to improve reaction pressure as far as possible, therefore ensures partial pressure and control of the acetylene in gaseous mixture
Hydrogen manufacturing alkynes is than the key as producing ethylene with acetylene hydrogenation technology.
At present, for producing ethylene with acetylene hydrogenation technology, the actual control method not referred to.
The content of the invention
It is an object of the invention to provide a kind of method of controlling security of producing ethylene with acetylene hydrogenation device.
The purpose of the present invention is achieved through the following technical solutions：
The method of controlling security of the producing ethylene with acetylene hydrogenation device of the present invention,
Including hydrogen gas pipeline and acetylene air inlet pipeline, the hydrogen gas pipeline is provided with two sets of hydrogen flowing quantity instrument
Table, a set of hydrogen stop valve and a set of hydrogen regulating valve, the acetylene air inlet pipeline are provided with two sets of acetylene flow instruments, a set of
Acetylene interlocks stop valve and a set of acetylene regulating valve, in addition to a set of PLC control system；
After two sets of hydrogen flowing quantity instrument and/or the measurement error of two sets of acetylene flow instruments exceed defined error, hair
Go out to alarm and trigger interlocking, so as to close acetylene interlocking stop valve and hydrogen interlocking stop valve.
As seen from the above technical solution provided by the invention, producing ethylene with acetylene hydrogenation dress provided in an embodiment of the present invention
The method of controlling security put, it is as far as possible accurate to control hydrogen alkynes ratio while acetylene partial pressure is controlled, so as to reduce hydrogen circulation amount,
Ensure to react safe, smooth while reduce the purpose of energy consumption.
Brief description of the drawings
Fig. 1 is the system architecture signal of the method for controlling security of producing ethylene with acetylene hydrogenation device provided in an embodiment of the present invention
Figure.
Embodiment
The embodiment of the present invention will be described in further detail below.What is be not described in detail in the embodiment of the present invention is interior
Appearance belongs to prior art known to professional and technical personnel in the field.
The method of controlling security of the producing ethylene with acetylene hydrogenation device of the present invention, its preferable embodiment are：
Including hydrogen gas pipeline and acetylene air inlet pipeline, the hydrogen gas pipeline is provided with two sets of hydrogen flowing quantity instrument
Table, a set of hydrogen stop valve and a set of hydrogen regulating valve, the acetylene air inlet pipeline are provided with two sets of acetylene flow instruments, a set of
Acetylene interlocks stop valve and a set of acetylene regulating valve, in addition to a set of PLC control system；
After two sets of hydrogen flowing quantity instrument and/or the measurement error of two sets of acetylene flow instruments exceed defined error, hair
Go out to alarm and trigger interlocking, so as to close acetylene interlocking stop valve and hydrogen interlocking stop valve.
Measured value after the high choosing of two sets of acetylene flow instruments progress as acetylene flow instrument, two sets of hydrogen streams
Measured value after the low choosing of amount instrument progress as hydrogen flowing quantity instrument, for ensureing the safety of control method.
Using the regulation of acetylene single loop and adoption rate setting regulation hydrogen loop, ensure that hydrogen, alkynes ratio are more than 1/3, so as to
Acetylene partial pressure is reduced, ensures the safety of whole control method.
Using hydrogen, the alarm interlocking of acetylene ratio, when hydrogen, alkynes ratio are less than 1/3, start alarm interlocking.
Method of controlling security is realized by the PLC control system.
The method of controlling security of the producing ethylene with acetylene hydrogenation device of the present invention, it is as far as possible accurate while acetylene partial pressure is controlled
Really control hydrogen alkynes ratio, so as to reduce hydrogen circulation amount, reaches safety, low consumption, the purpose of environmental protection.
Specific embodiment：
As shown in figure 1, including two sets of acetylene flow instruments (FT-101A/B), two sets of hydrogen flowing quantity instrument (FI-102A/
B), a set of acetylene regulating valve (FV-101), a set of hydrogen regulating valve (FV-102), a set of acetylene interlocking stop valve (XV-101),
A set of hydrogen stop valve (XV-102) and a set of PLC control system.
Wherein：
Two sets of acetylene flow instruments, FT-101A, FT-101B, it is therefore an objective to overcome the error of acetylene flow instrument and improve second
The reliability of alkynes measurement, when the measured value of two sets of instrument is no more than setting, device is selected by FY-101 height, selects higher number
Value, as acetylene flow FI-101 measured value, single loop regulation is carried out, FV-101 aperture is controlled, to ensure acetylene flow
Stabilization, while passing ratio setting apparatus FY-100A, as the setting value in hydrogen loop, to control the flow of hydrogen.To ensure
The safety of device, lead to too small amount of hydrogen excess, reach the purpose that acetylene is completely reacted to ethene；When the measurement of two sets of instrument
When value exceedes setting, i.e. high alarm (︱ PV occur for difference in flow loop FID-101:FI-101A-PV:FI-101B ︱>1.5%)
When, start warning function, (the ︱ PV when high alarm occurs for FID-101:FI-101A-PV:FI-101B ︱>2%) when, connection is started
Lock I-101 and stop acetylene and hydrogen charging (shut-off XV-101 and XV-102).
Two sets of hydrogen flowing quantity instrument, FT-102A, FT-102B, it is therefore an objective to overcome the error of hydrogen flowing quantity instrument and improve hydrogen
The reliability of gas measurement, when the measured value of two sets of instrument is no more than setting, selects device by the way that FY-102 is low, selects relatively low number
Value, as hydrogen flowing quantity FI-102 measured value, ratio loop modulation is carried out, FV-102 aperture is controlled, to ensure hydrogen stream
The stabilization of amount；When the measured value of two sets of instrument exceedes setting, i.e. high alarm (︱ PV occur for difference in flow loop FID-102:FI-
102A-PV:FI-102B ︱>1.5%) when, warning function is started, (the ︱ PV when high alarm occurs for FID-102:FI-102A-
PV:FI-102B ︱>2%) when, start interlocking I-101 and stop acetylene and hydrogen charging (shut-off XV-101 and XV-102).
When hydrogen gas lines or production upstream line break down, hydrogen flowing quantity is caused to cannot be guaranteed requirement, i.e. hydrogen loop
Measured value is less than ratio setpoint (PV:FI-102-MV:FY-101A<1.5%) when, start alarm, work as PV:FI-102-MV:
FY-101A<When 1.5%, start interlocking I-101 and stop acetylene and hydrogen charging (shut-off XV-101 and XV-102).
Beneficial effects of the present invention are：
Under the premise that security is guaranteed, it is as far as possible accurate to control hydrogen alkynes ratio, so as to reach raising efficiency, reduce the mesh of energy consumption
's.
In Fig. 1：
Acetylene flow measurement loop FT-101A and FT-101B use vortex flow meter, and single table system accuracy is
0.75%, therefore when two sets of instrument measurement value errors are 1.5%, represent that instrument function is normal, technique is normal；Two sets of instrument are surveyed
Value error at 1.5%~2%, represent instrument function break down or external interference caused by transient effects, therefore only
Start alarm；When two sets of instrument measurement value errors are more than 2%, represent that instrument function can not ensure to keep the safety in production, start safety
Interlock circuit, stop acetylene and hydrogen charging.
Hydrogen flowing quantity measuring loop FT-102A and FT-102B use vortex flow meter, and single table system accuracy is
0.75%, therefore when two sets of instrument measurement value errors are 1.5%, represent that instrument function is normal, technique is normal；Two sets of instrument are surveyed
Value error at 1.5%~2%, represent instrument function break down or external interference caused by transient effects, therefore only
Start alarm；When two sets of instrument measurement value errors are more than 2%, represent that instrument function can not ensure to keep the safety in production, start safety
Interlock circuit, stop acetylene and hydrogen charging.
FID-101 display modules are used for the measurement error for detecting two acetylene flow instruments FT-101A and FT-101B.
FID-102 display modules are used for the measurement error for detecting two hydrogen flowing quantity instrument FT-102A and FT-102B.
FY-101 selecting modules are used for the value for selecting two acetylene flow instrument FT-101A and FT-101B measured values higher
And it is used for circuit controls.
FY-102 selecting modules are used for the value for selecting two hydrogen flowing quantity instrument FT-102A and FT-102B measured values relatively low
And it is used for circuit controls.
FY-100A ratio setting modules, for setting hydrogen alkynes ratio.
FY-100B is used to detect whether hydrogen flowing quantity meets hydrogen alkynes than needs, and when hydrogen flowing quantity can not meet to require,
Start interlock shutdown.
XV-101, acetylene pipeline stop valve, for cutting off acetylene flow.
XV-102, hydrogen gas lines stop valve, for cutting off hydrogen flowing quantity.
I-101, interlocking modules, according to acetylene and hydrogen flowing quantity, carry out logical operation and close stop valve.
Specifically adjustment process is：
By live flow instrument FT-101A, FT-101B, FT-102A, FT-102B by redundancy ai board, connect
Enter PLC control system, its signal uses two 4~20mADC+HART of line；By Field adjustment valve FV-101, FV-102 electric valve
Door holder accesses PLC control system by redundancy ao board, and its signal uses 4~20mADC+HART；Scene is opened
Valve XV-101, XV-102 magnetic valve are closed by relay and redundant digit output access PLC control system, its signal is using dry
Contact exports, and seals in 24VDC power supplys in relay side, drives live magnetic valve, the through and off of controlling switch valve.
In PLC control system, the acetylene flow for showing measurement, choosing are used for from display module FI-101A, FI-101B
By the use of high modeling block be used for compare FI-101A, FI-101B and using wherein numerical value it is high as output be sent into display module FI-101,
For showing safe acetylene flow；It is used for the hydrogen flowing quantity for showing measurement from display module FI-102A, FI-102B, selects
Low modeling block be used for compare FI-102A, FI-102B and using wherein numerical value it is low as output be sent into display module FI-102, use
In the acetylene flow of display safety.
It is used for single loop closed loop regulation acetylene flow from adjustment module FIC-101 in PLC control system, from regulation
Module FIC-102 is used for ratio closed loop regulation hydrogen flowing quantity, and its setting value derives from FY-100A, i.e., according to acetylene flow and in advance
The product of the ratio first set.
It is poor to be used for the measurement of two acetylene flow instruments of display from display module FID-101 in PLC control system, when
Difference is more than 1.5% alarm, starts interlocking when difference is more than 2%；It is used to show two hydrogen from display module FID-102
The measurement of throughput instrument is poor；When difference is more than 1.5% alarm, start interlocking when difference is more than 2%.
Ratio setting module FY-100A is selected in PLC control system, for setting hydrogen alkynes ratio, according to laboratory result,
Setting range is 3~4, i.e., hydrogen alkynes ratio is 3:1 to 4:Set between 1.
Ratio module is selected in PLC control system, for comparing whether safe hydrogen flowing quantity is less than according to acetylene stream
Amount setting needs flow, and starts alarm or the flow of interlocking close hydrogen and acetylene according to result.
In PLC control system, logical operation is selected and according to operation result, controlling switch valve XV-101's and XV-102
Break-make, so as to ensure the safe and smooth implementation of whole control method.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (5)
1. a kind of method of controlling security of producing ethylene with acetylene hydrogenation device, including hydrogen gas pipeline and acetylene air inlet pipeline, its
It is characterised by, the hydrogen gas pipeline is provided with two sets of hydrogen flowing quantity instrument (FI-102A/B), a set of hydrogen stop valve (XV-
102) and a set of hydrogen regulating valve (FV-102), the acetylene air inlet pipeline are provided with two sets of acetylene flow instrument (FT-101A/
B), a set of acetylene interlocking stop valve (XV-101) and a set of acetylene regulating valve (FV-101), in addition to a set of PLC control system；
After two sets of hydrogen flowing quantity instrument and/or the measurement error of two sets of acetylene flow instruments exceed defined error, report is sent
Warn and trigger interlocking, so as to close acetylene interlocking stop valve and hydrogen interlocking stop valve.
2. the method for controlling security of producing ethylene with acetylene hydrogenation device according to claim 1, it is characterised in that described two sets
Measured value after the high choosing of acetylene flow instrument progress as acetylene flow instrument, after two sets of hydrogen flowing quantity instrument carry out low choosing
As the measured value of hydrogen flowing quantity instrument, for ensureing the safety of control method.
3. the method for controlling security of producing ethylene with acetylene hydrogenation device according to claim 2, it is characterised in that using acetylene
Single loop adjusts and adoption rate setting regulation hydrogen loop, ensures that hydrogen, alkynes ratio are more than 1/3, so as to reduce acetylene partial pressure, ensures
The safety of whole control method.
4. the method for controlling security of producing ethylene with acetylene hydrogenation device according to claim 3, it is characterised in that using hydrogen
Gas, the alarm interlocking of acetylene ratio, when hydrogen, alkynes ratio are less than 1/3, start alarm interlocking.
5. the method for controlling security of the producing ethylene with acetylene hydrogenation device according to any one of Claims 1-4, its feature exist
In realizing method of controlling security by the PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020298.2A CN107676627A (en) | 2017-10-26 | 2017-10-26 | The method of controlling security of producing ethylene with acetylene hydrogenation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711020298.2A CN107676627A (en) | 2017-10-26 | 2017-10-26 | The method of controlling security of producing ethylene with acetylene hydrogenation device |
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| CN107676627A true CN107676627A (en) | 2018-02-09 |
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| CN201711020298.2A Pending CN107676627A (en) | 2017-10-26 | 2017-10-26 | The method of controlling security of producing ethylene with acetylene hydrogenation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425273A (en) * | 2020-10-10 | 2022-05-03 | 中国石油化工股份有限公司 | Control method and application of carbo-hydrogenation reactor |
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| CN204981160U (en) * | 2015-07-21 | 2016-01-20 | 北京神雾环境能源科技集团股份有限公司 | System for oxygen / coal jetting preparation carbide and ethylene |
| CN205405281U (en) * | 2016-02-18 | 2016-07-27 | 青海盐湖工业股份有限公司 | Unstripped gas proportion automatic control device in ethylene chlorate blender |
| CN205443125U (en) * | 2015-12-29 | 2016-08-10 | 北京华福工程有限公司 | Device of high concentration acetylene hydrogenation system ethylene |
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| CN106233061A (en) * | 2014-03-11 | 2016-12-14 | Mks 仪器公司 | For the real-time system monitoring the flow through mass flow controller and method |
| CN106362652A (en) * | 2016-09-26 | 2017-02-01 | 北京神雾环境能源科技集团股份有限公司 | Reaction system and method for preparing ethylene by using acetylene recovered from solvent |
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2017
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847250A (en) * | 1995-09-23 | 1998-12-08 | Basf Aktiengesellschaft | Supported palladium catalyst for selective catalytic hydrogenation of acetylene in hydrocarbonaceous streams |
| CN106233061A (en) * | 2014-03-11 | 2016-12-14 | Mks 仪器公司 | For the real-time system monitoring the flow through mass flow controller and method |
| CN105129800A (en) * | 2015-07-21 | 2015-12-09 | 北京神雾环境能源科技集团股份有限公司 | Process and system of preparing calcium carbide and ethylene through oxygen/coal injection |
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| CN205443125U (en) * | 2015-12-29 | 2016-08-10 | 北京华福工程有限公司 | Device of high concentration acetylene hydrogenation system ethylene |
| CN205405281U (en) * | 2016-02-18 | 2016-07-27 | 青海盐湖工业股份有限公司 | Unstripped gas proportion automatic control device in ethylene chlorate blender |
| CN105859501A (en) * | 2016-06-08 | 2016-08-17 | 北京神雾环境能源科技集团股份有限公司 | Reaction system and method for preparing ethylene by means of solvent reclamation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114425273A (en) * | 2020-10-10 | 2022-05-03 | 中国石油化工股份有限公司 | Control method and application of carbo-hydrogenation reactor |
| CN114425273B (en) * | 2020-10-10 | 2022-11-18 | 中国石油化工股份有限公司 | Control method and application of carbo-hydrogenation reactor |
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Application publication date: 20180209 |
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