CN107641526A - The method of controlling security of nitrogen in a kind of acetylene production - Google Patents
The method of controlling security of nitrogen in a kind of acetylene production Download PDFInfo
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- CN107641526A CN107641526A CN201710834877.4A CN201710834877A CN107641526A CN 107641526 A CN107641526 A CN 107641526A CN 201710834877 A CN201710834877 A CN 201710834877A CN 107641526 A CN107641526 A CN 107641526A
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- internally piloted
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Abstract
The invention discloses a kind of method of controlling security of nitrogen in acetylene production, when DCS is normally controlled, the safety operation of nitrogen in small hopper A, hopper B, hopper C, acetylene generator is controlled by DCS, any appliance pressure >=20KPa, all nitrogen internally piloted valves are closed, emptying internally piloted valve are opened, when the secondary teletransmission instrument failure of pressure, to enter nitrogen flow as main control parameters, nitrogen stream gauge shows >=20m3During/h, close all nitrogen internally piloted valves, open emptying internally piloted valve, when DCS exceptions or during whole system power failure state, any of the above-described equipment pressure >=20KPa, then all nitrogen mechanical safety valves are closed automatically, open emptying mechanical safety valve, increase small hopper A, hopper B nitrogen internally piloted valve hardware interlock control method, so that it is guaranteed that pressure is normal in system, solve when have a power failure moment and the rupture pressure disc rupture that may trigger in the case of the whole dead electricity of UPS or the serious accident exploded in whole facility, improve security reliability.
Description
Technical field
The present invention relates to the control method of acetylene production process process area nitrogen, nitrogen in especially a kind of acetylene production
Method of controlling security.
Background technology
At present, known acetylene production process technology is very ripe.Technical process is：Second is produced using carbide
Alkynes.The calcium carbide block of certain specification after crushing is entered into the small hopper A of acetylene generator, hopper B, hopper C again through bucket elevator
Occur into generator in storehouse, calcium carbide and water reaction generation acetylene gas, enter next production process by certain technical process.On
State technical process to control using DCS Distributed Control Systems more, DCS Distributed Control Systems are made up of hardware and software, wherein hardware
Including field control station, active station, engineer station, communication netting twine etc.；Software includes operating system platform and industrial controlling
DCS configuration softwares, DCS hardware configurations used and software merit rating are had nothing in common with each other, wherein in acetylene generator nitrogen charging and blanking process
Small hopper A, hopper B, hopper C displacements are particularly important with the security control of feeding stage.The problem of presently, there are be：When the wink that has a power failure
Between, and the now whole dead electricity of UPS, control system can may cause a large amount of nitrogen by all valve openings or in unknown state
Gas enters small hopper A, hopper B, hopper C, acetylene generator, and atmospheric valve is closed, if now middle control active station is in blank screen shape
State, pressure change can not be monitored, in-situ processing runaway condition, scene viewing can not be gone once to show, then can cause hopper and storage
It is in communication with the outside between bucket or hopper and acetylene generator, above-mentioned facility is in larger pressure, causes rupture pressure disc to rupture or draw
The serious accident of blast in whole facility is played, therefore serious potential safety hazard be present.
The content of the invention
It is beneficial to acetylene technological operation it is an object of the invention to provide one kind, strengthens in security control, suitable acetylene production
The method of controlling security of nitrogen.
The method of controlling security of nitrogen in a kind of acetylene production, when DCS is normally controlled, small hopper A, storage are controlled by DCS
The safety operation of nitrogen, mainly has the following steps in bucket B, hopper C, acetylene generator：When small hopper A, hopper B, hopper C, second
Any appliance pressure >=20KPa in alkynes generator, all nitrogen internally piloted valves are closed, while open emptying internally piloted valve immediately；When small
In hopper A, hopper B, hopper C, acetylene generator during the secondary teletransmission instrument failure of any appliance pressure, using enter nitrogen flow as
Main control parameters, nitrogen stream gauge show >=20m3During/h, all nitrogen internally piloted valves are closed, while open emptying automatic control immediately
Valve；
When DCS exceptions or during whole system power failure state, set when any in small hopper A, hopper B, hopper C, acetylene generator
Standby pressure >=20KPa, then all nitrogen mechanical safety valves close automatically, open emptying mechanical safety valve；Increase small hopper simultaneously
A, the hardware interlock control method of hopper B nitrogen internally piloted valve, can not be opened simultaneously, to ensure that pressure is normal in system.
The method of controlling security of nitrogen in a kind of acetylene production as described above, when its above-mentioned DCS is normally controlled, small hopper
A, any appliance pressure >=20KPa in hopper B, hopper C, acetylene generator, prioritizing selection any of which equipment pressure >=20KPa
When, then perform and close nitrogen internally piloted valve A, nitrogen internally piloted valve B, nitrogen internally piloted valve D, while open emptying internally piloted valve immediately；
The method of controlling security of nitrogen in a kind of acetylene production as described above, when its above-mentioned DCS is normally controlled, pressure is secondary remote
Instrument failure is passed, small hopper A, hopper B, acetylene generator any appliance nitrogen stream gauge show >=20m3During/h, nitrogen is closed
Internally piloted valve A, nitrogen internally piloted valve B, nitrogen internally piloted valve D, while emptying internally piloted valve is opened immediately；
The method of controlling security of nitrogen in a kind of acetylene production as described above, its is above-mentioned when DCS exceptions or whole system is lost
During electricity condition, as any appliance pressure >=20KPa in small hopper A, hopper B, hopper C, acetylene generator, then nitrogen machine security
Valve A, B, D are closed automatically, open emptying mechanical safety valve, while when DCS is normally controlled, any of the above-described equipment pressure >=
20KPa, then nitrogen mechanical safety valve A, B, D close automatically, open emptying mechanical safety valve.
Because the present invention is analyzed the potential safety hazard of nitrogen in acetylene production layer by layer, and adds security control side
Method, solve when the moment that has a power failure, and the now whole dead electricity of UPS, control system can close all valves or in unknown shape
State, the problem of causing a large amount of nitrogen to enter system, also therefore avoid between hopper and hopper or hopper and acetylene generator with it is outer
Boundary connects, and causes rupture pressure disc to rupture or causes the serious accident of blast in whole facility, improves security reliability.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 be the embodiment of the present invention 1 acetylene production in nitrogen related process schematic flow sheet.
In Fig. 1,1 is charging conveyor；2 be small hopper A devices；3 be emptying device；4 be hopper B devices；5 be hopper C
Device；6 be acetylene generator device；21 be small hopper A nitrogen inlets, and 22 be the secondary teletransmission instrument A of pressure；23 be nitrogen flow
Count A；24 be nitrogen internally piloted valve A；25 be nitrogen mechanical safety valve A；31 be the secondary teletransmission instrument E of pressure；32 be emptying machinery peace
Full valve；33 be emptying internally piloted valve；41 be hopper B nitrogen inlets, and 42 be the secondary teletransmission instrument B of pressure；43 be nitrogen stream gauge B；
44 be nitrogen internally piloted valve B；45 be nitrogen mechanical safety valve B；51 be the secondary teletransmission instrument C of hopper C pressure；61 be acetylene generator
Nitrogen inlet, 62 be the secondary teletransmission instrument D of pressure；63 be nitrogen stream gauge D；64 be nitrogen internally piloted valve D；65 be nitrogen machinery peace
Full valve D.
Embodiment
Referring to the drawings 1, the embodiment of the present invention 1 is a kind of method of controlling security of nitrogen in acetylene production, is normally controlled in DCS
When processed, the safety operation of nitrogen in small hopper A1, hopper B4, hopper C5, acetylene generator 6 is controlled by DCS, mainly there is following step
Suddenly：As any appliance pressure >=20KPa in small hopper A1, hopper B4, hopper C5, acetylene generator 6, all nitrogen automatic controls are closed
Valve 24,44,64, while emptying internally piloted valve 33 is opened immediately；When in small hopper A1, hopper B4, hopper C5, acetylene generator 6
When the secondary teletransmission instrument 22 of one equipment pressure, 42,51,62 failure, to enter nitrogen flow as main control parameters, nitrogen flow
Meter 23,43,63 displays >=20m3During/h, all nitrogen internally piloted valves 24,44,64 are closed, while open emptying internally piloted valve 33 immediately；
When DCS exceptions or during whole system power failure state, when appointing in small hopper A1, hopper B4, hopper C5, acetylene generator 6
One equipment pressure >=20KPa, then all nitrogen mechanical safety valves 25,45,65 closing automatically, opens emptying mechanical safety valve 32；
Simultaneously increase small hopper A1, hopper B4 nitrogen internally piloted valve 24,44 hardware interlock control method, can not open simultaneously, with true
Pressure is normal in insurance system.
The method of controlling security of nitrogen in a kind of acetylene production as described above, when its above-mentioned DCS is normally controlled, small hopper
Any appliance pressure >=20KPa in A1, hopper B4, hopper C5, acetylene generator 6, prioritizing selection any of which equipment pressure >=
During 20KPa, then perform and close all nitrogen internally piloted valves 24,44,64, while open emptying internally piloted valve 33 immediately；
The method of controlling security of nitrogen in a kind of acetylene production as described above, when its above-mentioned DCS is normally controlled, small hopper A1,
Hopper B4, any appliance nitrogen stream gauge 23 of acetylene generator 6,43,63 displays >=20m3During/h, all nitrogen internally piloted valves are closed
24th, 44,64, while emptying internally piloted valve 33 is opened immediately；
The method of controlling security of nitrogen in a kind of acetylene production as described above, its is above-mentioned when DCS exceptions or whole system is lost
During electricity condition, as any appliance pressure >=20KPa in small hopper A1, hopper B4, hopper C5, acetylene generator 6, then all nitrogen
Mechanical safety valve 25,45,65 is closed automatically, opens emptying mechanical safety valve 32, while when DCS is normally controlled, it is any of the above-described
Equipment pressure >=20KPa, then all nitrogen mechanical safety valves 25,45,65 closing automatically, opens emptying mechanical safety valve 32.
The present invention mainly be the increase in the safety operation of mechanical safety valve, while add DCS control nitrogen internally piloted valve and
The control method of internally piloted valve is vented, it is other identical with prior art.
Claims (4)
- A kind of 1. method of controlling security of nitrogen in acetylene production, it is characterised in that：When DCS is normally controlled, controlled by DCS small The safety operation of nitrogen, mainly has the following steps in hopper A, hopper B, hopper C, acetylene generator：When small hopper A, hopper B, Any appliance pressure >=20KPa in hopper C, acetylene generator, all nitrogen internally piloted valves are closed, while open emptying automatic control immediately Valve；When the secondary teletransmission instrument failure of any appliance pressure in small hopper A, hopper B, hopper C, acetylene generator, with into nitrogen Throughput is main control parameters, and nitrogen stream gauge shows >=20m3During/h, all nitrogen internally piloted valves are closed, while open immediately It is vented internally piloted valve；When DCS exceptions or during whole system power failure state, when in small hopper A, hopper B, hopper C, acetylene generator Any appliance pressure >=20KPa, then all nitrogen mechanical safety valves close automatically, open emptying mechanical safety valve；Increase simultaneously Small hopper A, hopper B nitrogen internally piloted valve hardware interlock control method, can not open simultaneously, to ensure that pressure is just in system Often.
- 2. the method for controlling security of nitrogen in a kind of acetylene production as claimed in claim 1, it is characterised in that：The DCS is just Often during control, any appliance pressure >=20KPa in small hopper A, hopper B, hopper C, acetylene generator, any of which equipment pressure During >=20KPa, then perform and close nitrogen internally piloted valve A, nitrogen internally piloted valve B, nitrogen internally piloted valve D, while open emptying automatic control immediately Valve.
- 3. the method for controlling security of nitrogen in a kind of acetylene production as claimed in claim 1, it is characterised in that：The DCS is just Often during control, the secondary teletransmission instrument failure of pressure, small hopper A, hopper B, acetylene generator any appliance nitrogen stream gauge are shown ≥20m3During/h, nitrogen internally piloted valve A, nitrogen internally piloted valve B, nitrogen internally piloted valve D are closed, while opens emptying internally piloted valve immediately.
- 4. the method for controlling security of nitrogen in a kind of acetylene production as claimed in claim 1, it is characterised in that：It is described to work as DCS When abnormal or during whole system power failure state, when any appliance pressure in small hopper A, hopper B, hopper C, acetylene generator >= 20KPa, then nitrogen mechanical safety valve A, B, D close automatically, open emptying mechanical safety valve, while when DCS is normally controlled, on Any appliance pressure >=20KPa is stated, then nitrogen mechanical safety valve A, B, D are closed automatically, open emptying mechanical safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710834877.4A CN107641526B (en) | 2017-09-15 | 2017-09-15 | Safety control method for nitrogen in acetylene production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710834877.4A CN107641526B (en) | 2017-09-15 | 2017-09-15 | Safety control method for nitrogen in acetylene production |
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| CN107641526A true CN107641526A (en) | 2018-01-30 |
| CN107641526B CN107641526B (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710834877.4A Active CN107641526B (en) | 2017-09-15 | 2017-09-15 | Safety control method for nitrogen in acetylene production |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642528A (en) * | 2013-12-11 | 2014-03-19 | 甘肃银光聚银化工有限公司 | Calcium carbide preparing and feeding automatic control system of acetylene generator |
| CN204779493U (en) * | 2015-05-26 | 2015-11-18 | 广西德陆科技有限公司 | Full automatic material conveying system of acetylene gas generator |
-
2017
- 2017-09-15 CN CN201710834877.4A patent/CN107641526B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642528A (en) * | 2013-12-11 | 2014-03-19 | 甘肃银光聚银化工有限公司 | Calcium carbide preparing and feeding automatic control system of acetylene generator |
| CN204779493U (en) * | 2015-05-26 | 2015-11-18 | 广西德陆科技有限公司 | Full automatic material conveying system of acetylene gas generator |
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| CN107641526B (en) | 2020-07-03 |
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Address after: North Road 832000 the Xinjiang Uygur Autonomous Region Shihezi Development Zone No. 36 Applicant after: Shihezi Tianyu new solid chemical Co. Ltd. Applicant after: Xinjiang Tianye (Group) Co., Ltd. Address before: North Road 832000 the Xinjiang Uygur Autonomous Region Shihezi Development Zone No. 36 Applicant before: SHIHEZI DEVELOPMENT ZONE TIANYE CHEMICAL CO., LTD. Applicant before: Xinjiang Tianye (Group) Co., Ltd. |
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