CN108443708A - A kind of liquefied ammonia security control method - Google Patents
A kind of liquefied ammonia security control method Download PDFInfo
- Publication number
- CN108443708A CN108443708A CN201810216472.9A CN201810216472A CN108443708A CN 108443708 A CN108443708 A CN 108443708A CN 201810216472 A CN201810216472 A CN 201810216472A CN 108443708 A CN108443708 A CN 108443708A
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- Prior art keywords
- liquefied ammonia
- tank
- spray
- interlocking
- emergency
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/03—Control means
- F17C2250/036—Control means using alarms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0447—Composition; Humidity
- F17C2250/0452—Concentration of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/035—Dealing with losses of fluid
- F17C2260/036—Avoiding leaks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/035—Dealing with losses of fluid
- F17C2260/037—Handling leaked fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/042—Reducing risk of explosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/044—Avoiding pollution or contamination
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Separation By Absorption (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of liquefied ammonia security control methods, in DCS normal controls, when liquefied ammonia security control system is in auto state, reach setting alarm ceiling value E, F alarm when liquefied ammonia gas alarm instrument detects liquefied ammonia concentration, reach setting and alarm high ceiling value G, H, or exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, the interlocking of liquefied ammonia pressure tank, the mating interlocking of axial flow blower are opened when liquefied ammonia pressure reaches setting alarm ceiling value I, J alarm, reaches alarm high ceiling value M, N of setting.Any of the above-described operation is manually operable, when indoor temperature is higher, spray system can be opened manually manually to be cooled down, when DCS exceptions or when whole system power failure state, liquefied ammonia security control system can open spray emergency system, emergency system is sprayed when abnormal one-touch execution to spray emergency system manually, and above-mentioned control method is conducive to liquefied ammonia storage, security protection and emergency flight control operation, is suitble to liquefied ammonia security protection and emergency flight control in liquefied ammonia production.
Description
Technical field
The present invention relates to industrial liquefied ammonia production process field liquefied ammonia to produce, the control method of storage, and especially one
The security protection of liquefied ammonia and emergent controlling party in kind liquefied ammonia production.
Background technology
Currently, well known liquefied ammonia production Technology is very ripe.Liquefied ammonia is mainly used for nitric acid, urea and other chemistry
Fertilizer can be used as the raw material of medicine and pesticide, also act as refrigerant.At present because freezer equipment is more, refrigeration process is complicated, to liquid
The demand of ammonia increasingly increases, and ammonia is gaseous state at normal temperatures, and ammonia is cooled under -33.4 DEG C or room temperature under normal pressure and is pressurized to
1.554MPa is changed into liquid, and when leaking, gasification is diffused into air part liquefied ammonia rapidly, and liquefied ammonia belongs to high poison with ammonia
Gas, steam is mixed with air easily forms explosive mixture, and not only so that air pollutes, while there may be quick-fried
It is fried, cause serious personnel and economic loss.This makes the peace of the safety in production Yu leakage of liquefied ammonia in production process, liquefied ammonia storage
It is entirely more prominent with emergent problem.The real-time monitoring system of liquefied ammonia or ammonia mostly uses the control of DCS Distributed Control Systems, DCS collection
It dissipates control system to be made of hardware and software, wherein hardware includes field control station, active station, engineer station, communication cable etc.；
Software includes the DCS configuration softwares of operating system platform and industrial controlling, and DCS hardware configurations used and software configuration respectively have not
Together, wherein ammonia concentration monitoring and alarm, ammonia gas alarm and spray system interlocking, the security control of the emergent slot of liquefied ammonia
It is particularly important.Presently, there are the problem of be：
1, the volatile gasification of liquefied ammonia and liquefied ammonia transport easier than gas and storage convenience, such as occur leakage, easily cause to burn
Explosion or intoxication accident, disposition are careless, it will cause serious consequence；
2, secondary explosion occurs for the contacts such as liquefied ammonia environment easy to pollute, hot conditions, and therefore, disposition cooling difficulty is very big；
3, when the moment that has a power failure, and the whole dead electricity of UPS at this time, complex control system often open all valves when having a power failure
Unknown state is opened or be in, a large amount of ammonias may be caused to gush out, imponderable loss and security risk occurs.
Invention content
The purpose of the present invention is to provide one kind being conducive to liquefied ammonia storage, security protection and emergency flight control operation, is suitble to liquefied ammonia
The security protection of liquefied ammonia and emergent control method in production.
A kind of liquefied ammonia security control method, in DCS normal controls, when liquefied ammonia security control system is in auto state,
Reach setting alarm ceiling value E, F alarm when liquefied ammonia gas alarm instrument detects liquefied ammonia concentration, reach the high limit of setting alarm
Value G, H opens exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, the interlocking of liquefied ammonia pressure tank, the mating interlocking of axial flow blower.
Above-mentioned control system controls exhaust fan unlatching when automatically engaging, by DCS, spray system is opened, air inducing emergency system is opened,
Liquefied ammonia presses can system unlatching, the mating unlatching of axial flow blower.When liquefied ammonia pressure reaches setting alarm ceiling value I, J alarms, reaches and sets
Surely alarm high ceiling value M, N opens exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, the interlocking of liquefied ammonia pressure tank, axis stream wind
The mating interlocking of machine；Above-mentioned control system is when automatically engaging, by DCS control exhaust fans are opened, spray system is opened, air inducing is answered
Anxious system is opened, liquefied ammonia pressure can system selectively unlocks, the mating unlatching of axial flow blower；Any of the above-described operation can grasp manually
Make, can open and stop exhaust fan interlocking manually, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia press tank selective interlock,
The mating interlocking of axial flow blower.When indoor temperature is higher, spray system can be opened manually and be cooled down manually；When DCS exceptions
Or when whole system power failure state, liquefied ammonia security control system can open spray emergency system, and spraying emergency system when abnormal can
One-touch unlatching sprays emergency system manually.
A kind of liquefied ammonia security control method as described above, default liquefied ammonia gas alarm instrument detected value ceiling value E, F, Gao Gao
Limit value G, H preset teletransmission pressure gauge detected value ceiling value I, J, preset teletransmission pressure gauge detected value high ceiling value M, N.
A kind of liquefied ammonia security control method as described above, when above-mentioned DCS normal controls, at liquefied ammonia security control system
In auto state, reaches setting alarm ceiling value E, F alarm when liquefied ammonia gas alarm instrument detects liquefied ammonia concentration, reaches setting
Alarm high ceiling value G, H when, open exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank selectively join
Lock, the mating interlocking of axial flow blower；Above-mentioned control system is when automatically engaging, by DCS control exhaust fans are opened, spray system is sprayed
Water drenching internally piloted valve is opened, and feeding spraying pump is opened, lower layer's spray S type coil pipe internally piloted valves are opened；Upper layer spray S type coil pipe internally piloted valves are opened
It opens, underground liquefied ammonia slot charging internally piloted valve is opened in above-mentioned air inducing emergency system, and liquefied ammonia emergency pump is opened, liquefied ammonia emergency tank liquid level is big
In the half of emergent groove depth；Above-mentioned liquefied ammonia pressure can system alternative opens liquefied ammonia and tank internally piloted valve, liquefied ammonia is pressed to press tank pressure
Contracting machine, liquefied ammonia pressure tank charging internally piloted valve carry out emergent pressure tank tank switching operation；Above-mentioned axial flow blower is mating（It blows）With axial flow blower
It is mating（It blows）It opens simultaneously.
A kind of liquefied ammonia security control method as described above, when above-mentioned DCS normal controls, at liquefied ammonia security control system
In auto state, beaten when liquefied ammonia pressure reaches setting alarm ceiling value I, J alarm, reaches setting alarm high ceiling value M, N
Open exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank selective interlock, the mating interlocking of axial flow blower.On
Control system is stated when automatically engaging, by DCS control exhaust fans are opened, spray system shower water internally piloted valve is opened, feeding spraying pump
It opens, lower layer's spray S type coil pipe internally piloted valves unlatching, upper layer sprays S type coil pipe internally piloted valves and opens, in above-mentioned air inducing emergency system
Meet above-mentioned condition while liquefied ammonia emergency tank liquid level is more than the half of emergent groove depth, liquefied ammonia slot charging internally piloted valve in underground is opened
It opening, liquefied ammonia emergency pump is opened, and above-mentioned liquefied ammonia pressure can system alternative opens liquefied ammonia and tank internally piloted valve, liquefied ammonia is pressed to press tank compressor,
Liquefied ammonia pressure tank charging internally piloted valve carries out emergent pressure tank tank switching operation；Above-mentioned axial flow blower is mating（It blows）It is mating with axial flow blower
（It blows）It opens simultaneously.
A kind of liquefied ammonia security control method as described above, when above-mentioned DCS normal controls, at liquefied ammonia security control system
In manual mode, any of the above-described operation can be manually operated, and can open and stop exhaust fan interlocking, spray system connection manually
The emergent interlocking of lock, air inducing, liquefied ammonia pressure tank selective interlock, the mating interlocking of axial flow blower.
A kind of liquefied ammonia security control method as described above, above-mentioned indoor temperature of working as is higher, can open spray manually
System carries out manual spraying cooling, and spray system shower water internally piloted valve is opened, and feeding spraying pump is opened, lower layer sprays S type coil pipes
Internally piloted valve is opened, and upper layer sprays S type coil pipe internally piloted valves and opens.
A kind of liquefied ammonia security control method as described above, when above-mentioned DCS exceptions or when whole system power failure state, liquid
Ammonia security control system can open spray emergency system, can not such as be automatically turned in the presence of abnormal, and spray emergency system can manual one
Key swich opens head tank by spray emergency button and meets an urgent need internally piloted valve, and by injector, shower water is met an urgent need -35 in head tank
DEG C chilled brine runs leakage ammonia, cooling for spray-absorption.
A kind of liquefied ammonia security control method as described above, liquefied ammonia emergency tank liquid level is more than liquid wherein in air inducing emergency system
The half of the emergent groove depth of ammonia, while liquid level installs far transmission level meter instruction, liquid level warning and interlocking additional.
It is -35 DEG C of chilled brines in the emergent head tank of a kind of liquefied ammonia security control method as described above, wherein shower water,
For spray and absorb run leakage ammonia and meanwhile for system cool down.
A kind of device for liquefied ammonia security control method as described above, liquefied ammonia security control device are mainly stored up by liquefied ammonia
There are trench cofferdam, liquefied ammonia to store up premises face, liquid ammonia storage tank in room（A/B/C/D）, the emergent system of exhaust fan system, spray system, air inducing
System, liquefied ammonia pressure can system, axial fan system, spray emergency system composition.Liquefied ammonia gas alarm instrument（Storage tank and storage room）With storage
Tank teletransmission pressure gauge detects exception in real time, starts security control device by imposing a condition when liquefied ammonia security control system is normal,
When DCS exceptions or when whole system power failure state, liquefied ammonia security control system can open spray emergency system.
The liquefied ammonia stores up room, is inside provided with trench cofferdam, and liquefied ammonia stores up premises face, liquid ammonia storage tank（A/B/C/D）, storage tank teletransmission
Pressure gauge, liquefied ammonia gas alarm instrument（Storage tank and storage room）, exhaust fan interlocking, spray system interlocking, air inducing emergency system, liquefied ammonia pressure
Can system, axial fan system.
The exhaust fan system, is provided with exhaust fan, and in 3 meters far from ground fore-and-aft distance of room of liquefied ammonia storage place, transverse direction away from
From 6 meters one.
The spray system is provided with upper layer spray S type coil pipes, and lower layer sprays S type coil pipes, and lower layer sprays S types coil pipe certainly
Valve is controlled, upper layer sprays S type coil pipe internally piloted valves, cross shower, and upper layer spray S type coil pipes are located at liquefied ammonia storage roof portion fore-and-aft distance 1
At rice, lower layer's spray S type coil pipes are located at below the spray S types coil pipe of upper layer at 1 meter of fore-and-aft distance, the spray in the spray system
S types coil pipe is in each liquid ammonia storage tank（A/B/C/D）And liquefied ammonia pressure tank has a setting for tank, the unlatching of spray system water can run to
Shower water main pipe line and upper layer spray S types coil pipe after shower water internally piloted valve in spray system, lower layer sprays at S type coil pipes, liquefied ammonia
Storage tank（A/B/C/D）And liquefied ammonia presses tank for tank top S type coil pipes.
The air inducing emergency system, is provided with air inducing emergency pipe line, liquefied ammonia air inducing emergency pump, and underground liquefied ammonia slot feeds automatic control
Valve, air inducing emergency pipe line one end lead in liquefied ammonia storage room, and the other end is connected with liquefied ammonia air inducing emergency pump, then passes through underground liquefied ammonia slot
Feed internally piloted valve, towards liquefied ammonia emergency tank in meet an urgent need about 20 centimetres of trench bottom away from liquefied ammonia below liquid level.
The liquefied ammonia presses can system, is provided with liquid ammonia storage tank（A/B/C/D）, liquefied ammonia pressure tank pipeline, liquefied ammonia pressure tank internally piloted valve,
Liquefied ammonia presses tank compressor, liquefied ammonia that tank is pressed to feed internally piloted valve, and liquefied ammonia presses tank for tank, standby tank teletransmission pressure gauge, standby tank gas alarm instrument.
The liquid ammonia storage tank（A/B/C/D）Emergent discharge unit is connect with liquefied ammonia pressure tank pipeline, and tank internally piloted valve, liquefied ammonia pressure are pressed by liquefied ammonia
Tank compressor, liquefied ammonia press tank to feed internally piloted valve to liquefied ammonia pressure tank for tank, and liquefied ammonia presses tank to be equipped with standby tank teletransmission pressure for tank
Meter, standby tank gas alarm instrument, liquefied ammonia pressure tank are equipped with shower water S type coil pipes for tank tank top, with feeding spraying pump in spray system,
Manifold is sprayed after shower water internally piloted valve to be connected.
The axial fan system, is provided with axial flow blower（It blows）, axial flow blower（Air-breathing）.Axial flow blower（It blows）Peace
A sidewalls lower end is installed therein far from 40 centimeters of ground, axial flow blower（Air-breathing）It is mounted on and flow fan（It blows）Opposing sides
Lower end is far from 200 centimeters of ground.
The shower water emergency system is provided with shower water and meets an urgent need head tank, and head tank meet an urgent need internally piloted valve, and injector sprays
Emergency button is drenched, the emergent head tank exit of the shower water is equipped with the emergent internally piloted valve of head tank, injector, and shower water is met an urgent need
There are -35 DEG C of chilled brines to run leakage ammonia, cooling for spray-absorption in head tank, spray emergency button is opened for one-touch manually
The emergent internally piloted valve of head tank is closed, the shower water emergency system is connected with shower water main pipe line in spray system, liquid ammonia storage tank（A/
B/C/D）And liquefied ammonia pressure tank is for tank top S types coil pipe and spray manifold phases after feeding spraying pump, shower water internally piloted valve in spray system
Even.In spray system exception, the emergent internally piloted valve of one-touch switch head tank, interior -35 DEG C of the emergent head tank of shower water are cold manually
Shower water main pipe line and upper layer spray S types coil pipe, lower layer's spray after shower water internally piloted valve can be run into spray system by freezing brine
It drenches at S type coil pipes, liquid ammonia storage tank（A/B/C/D）And liquefied ammonia presses tank for tank top S type coil pipes.
Liquefied ammonia as described above stores up room, is inside provided with liquefied ammonia storage premises face, is tilted for 15 degree from ground center to four sides cofferdam
In order to spray overflow, preservative treatment is made in liquefied ammonia storage premises face at angle.
Liquefied ammonia as described above stores up room, is inside provided with trench cofferdam, height 50 centimetres, 50 centimetres of width, anti-corrosion is made in inside
Processing, cofferdam terminal are communicated with liquefied ammonia emergency tank, for storing in spray overflow liquid and conducting fluid to liquefied ammonia emergency tank.
Spray S type coil pipe entrances in upper layer as described above are equipped with upper layer spray S type coil pipe internally piloted valves, and lower layer sprays S
Type coil pipe entrance is equipped with lower layer's spray S type coil pipe internally piloted valves, and upper layer sprays S types coil pipe and sprays S type coil pipe imports with lower layer
Manifold input ends are equipped with shower water internally piloted valve, feeding spraying pump.
Upper layer spray S types coil pipe as described above sprays S type coil pipes with lower layer and is equipped with cross shower.
Cross shower as described above is by taking over, take over five is logical, shower elbow, shower connector, shower form, assembling side
Just.It takes over and is connect with spray supply mains, take over five is logical to be connect with shower short circuit by silk mouth, then by shower short circuit and shower elbow
It is connected by silk mouth, shower elbow is connect with shower connector by silk mouth, and shower connector is connect with shower by matching mantle fiber mouth
Composition, it is easy to assembly.
The take over five of cross shower as described above is logical can to install 4 showers, can multi-angle sprayed, with abundant
It absorbs and cools down.
Shower connector one end as described above shower elbow is connected by silk mouth, and the other end is connected with shower by matching mantle fiber mouth
It connects, the shower connector has short circuit sleeve, connection lifting lug, is welded to connect with silk braid, and short circuit sleeve inner has through-hole.
Shower edge as described above, at 15 degree of angles, is sprayed with horizontal plane α with abundant mist.
Because the security risk of liquefied ammonia is analyzed layer by layer during the present invention produces liquefied ammonia, and adds security control row
The interlocking of gas fan, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank interlocking control method solve liquefied ammonia space gases concentration
It is exceeded to be solved when the moment that has a power failure with the exceeded security risk of pressure of storage tank and the emergent problem of safeguard protection, spray emergency system,
And all valves can be closed or be in unknown state by the whole dead electricity of UPS, control system at this time, and a large amount of ammonias is caused to enter
Therefore the problem of space, also avoids ammonia because concentration, pressure or high temperature cause the serious accident exploded in entire facility, carries
Security reliability is risen.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the liquefied ammonia security control method related process flow diagram of the embodiment of the present invention 1；
Fig. 2 be the embodiment of the present invention 1 liquefied ammonia security control device in cross shower Structure and Process schematic diagram；
Fig. 3 be the embodiment of the present invention 1 liquefied ammonia security control device in shower connector construction schematic diagram；
Fig. 4 be the embodiment of the present invention 1 liquefied ammonia security control device in gondola water faucet structure schematic diagram；
Fig. 5 is the liquid ammonia storage tank control logic schematic diagram of the embodiment of the present invention 1；
In Fig. 1,1 stores up room for liquefied ammonia；2 be trench cofferdam；3 store up premises face for liquefied ammonia；4 be axial flow blower（It blows）；5 store up for liquefied ammonia
Tank；6 be storage tank teletransmission pressure gauge；7 be liquefied ammonia gas alarm instrument（Storage tank and storage room）；8 spray S type coil pipes for upper layer；9 be lower layer
Spray S type coil pipes；10 be cross shower；11 spray S type coil pipe internally piloted valves for lower layer；12 spray S type coil pipe internally piloted valves for upper layer；
13 be air inducing emergency pipe line；14 be exhaust fan；15 be axial flow blower（Air-breathing）；16 press tank pipeline for liquefied ammonia；17 press tank for liquefied ammonia
Internally piloted valve；18 press tank compressor for liquefied ammonia；19 press tank to feed internally piloted valve for liquefied ammonia；20 press tank for tank for liquefied ammonia；21 is remote for standby tank
Pass pressure gauge；22 be standby tank gas alarm instrument；23 feed internally piloted valve for underground liquefied ammonia slot；24 be liquefied ammonia emergency tank；25 be liquefied ammonia
Air inducing emergency pump；26 be shower water internally piloted valve；27 be feeding spraying pump；28 be the emergent head tank of shower water；29 is emergent for head tank
Internally piloted valve；30 be injector；31 be spray emergency button.
In Fig. 2,101 be to take over；102 is logical for take over five；103 be shower elbow；104 be shower connector；105 be flower
It spills；106 be shower short circuit.
In Fig. 3,1041 it is silk braid, 1042 is connection lifting lug, 1043 is short circuit sleeve.
Specific implementation mode
With reference to attached drawing 1-5, the embodiment of the present invention 1 is a kind of liquefied ammonia security control method, in DCS normal controls,
Preset liquefied ammonia gas concentration alarm ceiling value E (120ppm), F (35LEL%), the high ceiling value G (150ppm) of setting alarm, H
(50LEL%) presets 7 DEG C of the liquid ammonia storage tank A/B teletransmission pressure gauge detected value ceiling value I of ammonia storage tank two (1.4Mpa), -35
DEG C two C/D teletransmission pressure gauge detected value ceiling value J (1.1Mpa) of ammonia storage tank, preset 7 DEG C of liquid ammonia storage tank ammonia storage tank two
The high ceiling value M (1.6Mpa) of A/B teletransmission pressure gauge detected values, the high limit of two C/D teletransmission pressure gauges detected values of -35 DEG C of ammonia storage tanks
Value N (1.3Mpa).
Liquefied ammonia security control system is in auto state, is set when liquefied ammonia gas alarm instrument 7,22 detects that liquefied ammonia concentration reaches
Surely alarm ceiling value E (120ppm), F (35LEL%) alarm, reach setting and alarm high ceiling value G (150ppm), H
(50LEL%), the interlocking of opening exhaust fan, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia press tank interlocking, axial flow blower to match associating
Lock.Above-mentioned control system is when automatically engaging, by DCS control exhaust fans 14 are opened, spray system is opened, air inducing emergency system
It opens, liquefied ammonia pressure can system is opened, the mating unlatching of axial flow blower.When liquefied ammonia pressure reach setting alarm ceiling value I (1.4Mpa),
J (1.1Mpa) alarms reach the high ceiling value M (1.6Mpa) of setting alarm, the interlocking of N (1.3Mpa) opening exhaust fans, spray system
Interlocking, the emergent interlocking of air inducing, the interlocking of liquefied ammonia pressure tank, the mating interlocking of axial flow blower；Above-mentioned control system when automatically engaging, by
DCS control exhaust fans 14 are opened, spray system is opened, air inducing emergency system is opened, liquefied ammonia pressure can system selectively unlocks, axis stream
Matched with blower is opened；Any of the above-described operation can be manually operated, and can open and stop exhaust fan interlocking, spray system manually
Interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank selective interlock, the mating interlocking of axial flow blower.It, can be manual when indoor temperature is higher
Spray system is opened manually to be cooled down；When DCS exceptions or when whole system power failure state, liquefied ammonia security control system can be held
Open spray emergency system.
A kind of liquefied ammonia security control method as described above, when above-mentioned DCS normal controls, at liquefied ammonia security control system
In auto state, when liquefied ammonia gas alarm instrument detects that liquefied ammonia concentration reaches setting alarm ceiling value E (120ppm), F
(35LEL%) alarm, reach setting alarm high ceiling value G (150ppm), H (50LEL%) when, open exhaust fan interlocking, spray
The emergent interlocking of system interlock, air inducing, liquefied ammonia pressure tank selective interlock, the mating interlocking of axial flow blower.Above-mentioned control system is automatic
When input, by DCS control exhaust fans 14 are opened, spray system shower water internally piloted valve 26 is opened, the unlatching of feeding spraying pump 27, lower layer
S type coil pipes internally piloted valve 11 is sprayed to open；Upper layer sprays S type coil pipes internally piloted valve 12 and opens, underground liquid in above-mentioned air inducing emergency system
Ammonia slot feeds internally piloted valve 23 and opens；Liquefied ammonia emergency pump 25 is opened, 24 liquid level of liquefied ammonia emergency tank is more than the two of entire emergent groove depth
/ mono-；Above-mentioned liquefied ammonia pressure can system alternative opens liquefied ammonia pressure tank internally piloted valve 17, and liquefied ammonia presses tank compressor 18, liquefied ammonia to press tank
Charging internally piloted valve 19 carries out emergent pressure tank tank switching operation；Above-mentioned axial flow blower is mating（It blows）4 is mating with axial flow blower（It blows）
15 open simultaneously.
A kind of liquefied ammonia security control method as described above, when above-mentioned DCS normal controls, at liquefied ammonia security control system
In auto state, sets alarm ceiling value I (1.4Mpa), J (1.1Mpa) alarm when liquefied ammonia pressure reaches, reaches setting alarm
Exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure are opened when high ceiling value M (1.6Mpa), N (1.3Mpa)
The mating interlocking of tank selective interlock, axial flow blower.Above-mentioned control system is opened when automatically engaging by DCS control exhaust fans 14
It opens, spray system shower water internally piloted valve 26 is opened, the unlatching of feeding spraying pump 27,11 unlatching of lower layer's spray S type coil pipes internally piloted valve, upper layer
It sprays S type coil pipes internally piloted valve 12 to open, meets above-mentioned condition 24 liquid level of liquefied ammonia emergency tank simultaneously in above-mentioned air inducing emergency system
More than half；Underground liquefied ammonia slot charging internally piloted valve 23 is opened, and liquefied ammonia emergency pump 25 is opened, and above-mentioned liquefied ammonia pressure can system is optional
Selecting property opens liquefied ammonia pressure tank internally piloted valve 17, and liquefied ammonia presses tank compressor 18, liquefied ammonia pressure tank charging internally piloted valve 19 to carry out emergent pressure tank and fall
Tank operates；Above-mentioned axial flow blower is mating（It blows）4 is mating with axial flow blower（It blows）15 open simultaneously.
A kind of liquefied ammonia security control method as described above, when above-mentioned DCS normal controls, at liquefied ammonia security control system
In manual mode, any of the above-described operation can be manually operated, and can open and stop exhaust fan interlocking, spray system connection manually
The emergent interlocking of lock, air inducing, liquefied ammonia pressure tank selective interlock, the mating interlocking of axial flow blower.
A kind of liquefied ammonia security control method as described above, above-mentioned indoor temperature of working as is higher, can open spray manually
System carries out manual spraying cooling, and spray system shower water internally piloted valve 26 is opened, and feeding spraying pump 27 is opened, lower layer sprays S types
Coil pipe internally piloted valve 11 is opened, and upper layer sprays S type coil pipes internally piloted valve 12 and opens.
A kind of liquefied ammonia security control method as described above, when above-mentioned DCS exceptions or when whole system power failure state, liquid
Ammonia security control system can open spray emergency system, can not such as be automatically turned in the presence of abnormal, and spray emergency system can manual one
Key swich opens the emergent internally piloted valve 29 of head tank by spray emergency button 30, by injector 30, by the emergent high position of shower water
- 35 DEG C of chilled brines run leakage ammonia, cooling for spray-absorption in slot 28.
A kind of liquefied ammonia security control method as described above, wherein 24 liquid level of liquefied ammonia emergency tank is more than in air inducing emergency system
The half of entire emergent groove depth, while liquid level installs far transmission level meter instruction, liquid level warning and interlocking additional.
A kind of liquefied ammonia security control method as described above, wherein shower water are met an urgent need, and head tank 28 is interior to freeze salt for -35 DEG C
Water.For spray and absorb run leakage ammonia and meanwhile for system cool down.
A kind of device for liquefied ammonia security control method as described above, liquefied ammonia security control device are mainly stored up by liquefied ammonia
There are trench cofferdam 2, liquefied ammonia to store up premises face 3, liquid ammonia storage tank in room 1（A/B/C/D）5, exhaust fan system, spray system, air inducing are answered
Anxious system, liquefied ammonia pressure can system, axial fan system, spray emergency system composition.Liquefied ammonia gas alarm instrument（Storage tank and storage room）7
Detection is abnormal in real time with storage tank teletransmission pressure gauge 6, starts security control by imposing a condition when liquefied ammonia security control system is normal
Device, when DCS exceptions or when whole system power failure state, liquefied ammonia security control system can open spray emergency system.
The liquefied ammonia stores up room 1, is inside provided with trench cofferdam 2, and liquefied ammonia stores up premises face 3, liquid ammonia storage tank（A/B/C/D）5, storage tank
Teletransmission pressure gauge 6, liquefied ammonia gas alarm instrument（Storage tank and storage room）7, exhaust fan interlocking, spray system interlocking, air inducing emergency system,
Liquefied ammonia presses can system, axial fan system.
The exhaust fan system is provided with exhaust fan 14, and at 3 meters away from ground fore-and-aft distance of room 1 of liquefied ammonia storage, laterally
Distance 6 meters one；
The spray system is provided with upper layer spray S types coil pipe 8, and lower layer sprays S types coil pipe 9, and lower layer sprays S type coil pipe automatic controls
Valve 11, upper layer spray S type coil pipes internally piloted valve 12, cross shower 10, and it is longitudinal positioned at 1 top of liquefied ammonia storage room that upper layer sprays S types coil pipe 8
At 1 meter of distance, lower layer sprays S types coil pipe 9 and is located at 1 meter of upper layer 8 lower section fore-and-aft distance of spray S types coil pipe, the spray system
In spray S types coil pipe in each liquid ammonia storage tank（A/B/C/D）5 and liquefied ammonia pressure tank have a setting for 20 tank deck of tank, spray system
System water unlatching can run into spray system shower water main pipe line and upper layer spray S types coil pipe, lower layer after shower water internally piloted valve 26
It sprays at S type coil pipes, liquid ammonia storage tank（A/B/C/D）5 and liquefied ammonia press tank for 20 top S type coil pipes of tank at.
The air inducing emergency system is provided with air inducing emergency pipe line 13, liquefied ammonia air inducing emergency pump 2, the charging of underground liquefied ammonia slot
Internally piloted valve 23,13 one end of air inducing emergency pipe line lead in liquefied ammonia storage room 1, and the other end is connected with liquefied ammonia air inducing emergency pump 2, then passes through
Underground liquefied ammonia slot feeds internally piloted valve 23, leads in liquefied ammonia emergency tank 24 about 20 centimetres away from 24 bottom of liquefied ammonia emergency tank below liquid level.
The liquefied ammonia presses can system, is provided with liquid ammonia storage tank（A/B/C/D）5, liquefied ammonia presses tank pipeline 16, liquefied ammonia to press tank automatic control
Valve 17, liquefied ammonia press tank compressor 18, liquefied ammonia that tank is pressed to feed internally piloted valve 19, and liquefied ammonia presses tank for tank 20, and standby tank teletransmission pressure gauge 21 is standby
Tank gas alarm instrument 22, the liquid ammonia storage tank（A/B/C/D）5 emergent discharge units are connect with liquefied ammonia pressure tank pipeline 16, by liquid
Ammonia presses tank internally piloted valve 17, liquefied ammonia to press tank compressor 18, liquefied ammonia that tank is pressed to feed internally piloted valve 19 to liquefied ammonia pressure tank for tank 20, and liquefied ammonia presses tank
Standby 20 tank body of tank is equipped with standby tank teletransmission pressure gauge 21, standby tank gas alarm instrument 22.
The axial fan system, is provided with axial flow blower（It blows）4, axial flow blower（Air-breathing）15.Axial flow blower（It blows
Gas）4 sidewalls lower ends installed therein are far from 40 centimeters of ground, axial flow blower（Air-breathing）15 are mounted on and flow fan（It blows）
4 opposing sides lower ends are far from 200 centimeters of ground.
The shower water emergency system is provided with shower water and meets an urgent need head tank 28, and head tank is met an urgent need internally piloted valve 29, injector
30, emergency button 31 is sprayed, emergent 28 exit of head tank of the shower water is equipped with the emergent internally piloted valve 29 of head tank, injector
30, shower water, which is met an urgent need in head tank 28, has -35 DEG C of chilled brines to run leakage ammonia, cooling for spray-absorption, sprays emergency button
31 for the emergent internally piloted valve of manual one-touch switch head tank 29.The shower water emergency system and shower water in spray system are total
Pipeline is connected, liquid ammonia storage tank（A/B/C/D）5 and liquefied ammonia pressure tank for feeding spraying pump 27 in 20 top S types coil pipe of tank and spray system,
Manifold is sprayed after shower water internally piloted valve 26 to be connected.In spray system exception, the manual emergent internally piloted valve of one-touch switch head tank
29, emergent 28 interior -35 DEG C of chilled brines of head tank of shower water, which can be run, to be sprayed into spray system after shower water internally piloted valve 26
At supply mains's line and upper layer spray S types coil pipe 8, lower layer's spray S type coil pipes at the top of 9, liquid ammonia storage tank at S type coil pipes.
Liquefied ammonia as described above stores up room 1, is inside provided with liquefied ammonia storage premises face 3, inclines for 15 degree from ground center to four sides cofferdam
In order to spray overflow, preservative treatment is made in liquefied ammonia storage premises face 3 at oblique angle.
Liquefied ammonia as described above stores up room 1, is inside provided with trench cofferdam 2, height 50 centimetres, 50 centimetres of width, inside is prevented
Corruption processing, cofferdam terminal are communicated with liquefied ammonia emergency tank 24, for storing spray overflow liquid and conducting fluid to liquefied ammonia emergency tank
In 24.
8 entrance of upper layer spray S types coil pipe as described above is equipped with upper layer spray S type coil pipes internally piloted valve 12, lower layer's spray
9 entrance of leaching S types coil pipe is equipped with lower layer's spray S type coil pipes internally piloted valve 11, and upper layer sprays S types coil pipe 8 and sprays S type disks with lower layer
9 intake header input end of pipe is equipped with shower water internally piloted valve 26, feeding spraying pump 27.
Upper layer spray S types coil pipe 8 as described above sprays S types coil pipe 9 with lower layer and is equipped with cross shower 10.
Cross shower 10 as described above by take over 101, take over five logical 102, shower elbow 103, shower connector 104,
Shower 105 forms, easy to assembly.Take over 101 connect with spray supply mains, and take over five logical 102 passes through silk mouth with shower short circuit 106
Connection, then connect by silk mouth with shower elbow 103 by shower short circuit 106, shower elbow 103 passes through with shower connector 104
Silk mouth connection, shower connector 104 and shower 105 are connect by matching mantle fiber mouth and are formed, easy to assembly.
The take over five logical 102 of cross shower 10 as described above can install 4 showers 105, can multi-angle sprayed
Leaching, to fully absorb and cool down.
104 one end shower elbow 103 of shower connector as described above is connected by silk mouth, the other end and shower 105 by
It being connected with mantle fiber mouth, the shower connector 104 has short circuit sleeve 1043, connection lifting lug 1042, is welded to connect with silk braid 1041,
There is through-hole inside short circuit sleeve 1043.
105 edge of shower as described above, at 15 degree of angles, is sprayed with horizontal plane α with abundant mist.
The above is the preferred preposition embodiment of the present invention, it is noted that is not exhaustively or by this to send out
It is bright to be limited to disclosed form and do not departing from principle of the present invention for those skilled in the art
Under the premise of, can also make several improvements and retouch, these improvements and modifications be in order to better illustrate the principles of the present invention and
Practical application, and make those skilled in the art it will be appreciated that the present invention is suitable for carrying for special-purpose to design
The various embodiments of various modifications.
Because the security risk of liquefied ammonia is analyzed layer by layer during the present invention produces liquefied ammonia, and adds security control row
The methods of the interlocking of gas fan, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank selective interlock, the mating interlocking of axial flow blower
Solve the problems, such as that liquefied ammonia space gases concentration over-standard and the exceeded security risk of pressure of storage tank and safeguard protection are emergent, in high temperature shape
When state, spray system can carry out hand automatic switchover, and spraying cooling is carried out to ammonia storage tank area.Spray emergency system, which solves to work as, stops
Electric moment, and all valves can be closed or be in unknown state by the whole dead electricity of UPS at this time, control system, lead to a large amount of ammonia
Gas enters the problem of space, also therefore ammonia is avoided to cause the considerable safety to explode in entire facility because of concentration, pressure or high temperature
Accident improves security reliability.
Liquefied ammonia gas alarm is preset in above-described embodiment, pressure alarm reference value can rule of thumb need to take multiple, tool
Body value and size, the space layout of liquid ammonia storage tank, liquefied ammonia storage room have particularly important relationship.
The present invention is mainly the increase in exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank selectivity
It interlocks, the safety operation of the mating interlocking of axial flow blower, while increasing the controlling party of one-touch switch spray emergency system manually
Method is other identical as prior art.
Claims (19)
1. a kind of liquefied ammonia security control method, it is characterised in that：In DCS normal controls, liquefied ammonia security control system is in certainly
When dynamic state, reaches setting alarm ceiling value E, F alarm when liquefied ammonia gas alarm instrument detects liquefied ammonia concentration, reaches setting report
Alert high ceiling value G, H open exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, the interlocking of liquefied ammonia pressure tank, axial flow blower
Mating interlocking, above-mentioned control system is when automatically engaging, by DCS control exhaust fans are opened, spray system is opened, air inducing is met an urgent need
System is opened, liquefied ammonia pressure can system is opened, the mating unlatching of axial flow blower, when liquefied ammonia pressure reaches setting alarm ceiling value I, J report
It is alert, reach alarm high ceiling value M, N of setting and open exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank connection
Lock, the mating interlocking of axial flow blower；Above-mentioned control system is when automatically engaging, by DCS control exhaust fans are opened, spray system is opened
It opens, air inducing emergency system is opened, liquefied ammonia pressure can system selectively unlocks, the mating unlatching of axial flow blower；Any of the above-described operation
With manual operation, exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank choosing can be opened and stopped manually
The interlocking of selecting property, the mating interlocking of axial flow blower can open spray system manually and be cooled down manually when indoor temperature is higher；When
When DCS exceptions or when whole system power failure state, liquefied ammonia security control system can open spray emergency system, the liquefied ammonia security
Control method is configured with liquefied ammonia security control device.
2. a kind of liquefied ammonia security control method as described in claim 1, it is characterised in that：The default liquefied ammonia gas alarm instrument
Detected value ceiling value E, F, high ceiling value G, H preset teletransmission pressure gauge detected value ceiling value I, J, preset teletransmission pressure gauge detection
It is worth high ceiling value M, N.
3. a kind of liquefied ammonia security control method as described in claim 1, it is characterised in that：When the DCS normal controls, liquefied ammonia
Security control system is in auto state, when liquefied ammonia gas alarm instrument detects that liquefied ammonia concentration reaches setting alarm ceiling value E, F
Alarm, reach setting alarm high ceiling value G, H when, open exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, liquid
Ammonia presses tank selective interlock, the mating interlocking of axial flow blower；Above-mentioned control system is opened when automatically engaging by DCS control exhaust fans
It opens, spray system shower water internally piloted valve is opened, feeding spraying pump unlatching, lower layer's spray S type coil pipe internally piloted valves unlatching；Upper layer sprays S
Type coil pipe internally piloted valve is opened, and underground liquefied ammonia slot charging internally piloted valve is opened in above-mentioned air inducing emergency system, the unlatching of liquefied ammonia emergency pump, liquid
Ammonia emergency tank liquid level is more than the half of emergent groove depth；Above-mentioned liquefied ammonia pressure can system alternative opens liquefied ammonia and presses tank automatic control
Valve, liquefied ammonia press tank compressor, liquefied ammonia pressure tank charging internally piloted valve to carry out emergent pressure tank tank switching operation；Above-mentioned axial flow blower is mating（It blows
Gas）It is mating with axial flow blower（It blows）It opens simultaneously.
4. a kind of liquefied ammonia security control method as described in claim 1, it is characterised in that：When the DCS normal controls, liquefied ammonia
Security control system is in auto state, sets alarm ceiling value I, J alarm when liquefied ammonia pressure reaches, reaches setting alarm height
Exhaust fan interlocking, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank selective interlock, axis stream wind are opened when ceiling value M, N
The mating interlocking of machine, above-mentioned control system are opened, spray system shower water internally piloted valve when automatically engaging by DCS control exhaust fans
It opens, feeding spraying pump is opened, lower layer's spray S type coil pipe internally piloted valves are opened, and upper layer sprays S type coil pipe internally piloted valves and opens, above-mentioned to draw
Liquefied ammonia emergency tank liquid level is more than the half of emergent groove depth, underground liquefied ammonia to the above-mentioned condition that meets in wind emergency system simultaneously
Slot feeds internally piloted valve and opens, and liquefied ammonia emergency pump is opened, and above-mentioned liquefied ammonia pressure can system alternative opens liquefied ammonia and presses tank internally piloted valve, liquid
Ammonia presses tank compressor, liquefied ammonia pressure tank charging internally piloted valve to carry out emergent pressure tank tank switching operation；Above-mentioned axial flow blower is mating（It blows）With
Axial flow blower is mating（It blows）It opens simultaneously.
5. a kind of liquefied ammonia security control method as described in claim 1, it is characterised in that：When the DCS normal controls, liquefied ammonia
Security control system is in manual mode, and any of the above-described operation can be manually operated, and can open and stop exhaust fan manually
Interlocking, spray system interlocking, the emergent interlocking of air inducing, liquefied ammonia pressure tank selective interlock, the mating interlocking of axial flow blower.
6. a kind of liquefied ammonia security control method as described in claim 1, it is characterised in that：The indoor temperature of working as is higher, can
Carry out manual spraying cooling to open spray system manually, spray system shower water internally piloted valve opened, feeding spraying pump opens, under
Layer spray S type coil pipe internally piloted valves are opened, and upper layer sprays S type coil pipe internally piloted valves and opens.
7. a kind of liquefied ammonia security control method as described in claim 1, it is characterised in that：When the DCS exceptions or entire system
When system power failure state, liquefied ammonia security control system can open spray emergency system, can not such as be automatically turned in the presence of abnormal, spray is answered
Anxious system can open the emergent internally piloted valve of head tank by one-touch switch by spray emergency button manually, by injector, by shower water
- 35 DEG C of chilled brines run leakage ammonia, cooling for spray-absorption in emergent head tank.
8. a kind of liquefied ammonia security control method as described in claim 1, it is characterised in that：Liquefied ammonia in the air inducing emergency system
Emergency tank liquid level be more than liquefied ammonia meet an urgent need groove depth half, while liquid level install additional far transmission level meter instruction, liquid level warning and
Interlocking.
9. a kind of liquefied ammonia security control method as described in claim 1, it is characterised in that：The shower water is met an urgent need in head tank
For -35 DEG C of chilled brines, runs the ammonia of leakage for spraying and absorbing while cooling down for system.
10. a kind of control device that a kind of liquefied ammonia security control method as described in claim 1 is realized, it is characterised in that：Institute
A kind of device for liquefied ammonia security control method stated in liquefied ammonia storage room mainly by having trench cofferdam, liquefied ammonia to store up premises face, liquid
Ammonia storage tank（A/B/C/D）, exhaust fan system, spray system, air inducing emergency system, liquefied ammonia pressure can system, axial fan system, spray
Drench emergency system composition, liquefied ammonia gas alarm instrument（Storage tank and storage room）Exception is detected in real time with storage tank teletransmission pressure gauge, works as liquefied ammonia
Start security control device by imposing a condition when security control system is normal, when DCS exceptions or when whole system power failure state,
Liquefied ammonia security control system can open spray emergency system.
11. a kind of control device that a kind of liquefied ammonia security control method as claimed in claim 10 is realized, it is characterised in that：Institute
Liquefied ammonia storage room is stated, trench cofferdam is inside provided with, liquefied ammonia stores up premises face, liquid ammonia storage tank（A/B/C/D）, storage tank teletransmission pressure gauge, liquid
Ammonia gas alarm（Storage tank and storage room）, exhaust fan interlocking, spray system interlocking, air inducing emergency system, liquefied ammonia pressure can system, axis
Flow fan system, the liquefied ammonia store up room, are inside provided with trench cofferdam, height 50 centimetres, 50 centimetres of width, inside is made at anti-corrosion
Reason, cofferdam terminal are communicated with liquefied ammonia emergency tank, described for storing in spray overflow liquid and conducting fluid to liquefied ammonia emergency tank
Liquefied ammonia store up room, be inside provided with liquefied ammonia storage premises face, from ground center to 15 degree of four sides cofferdam inclination angle in order to spray overflow,
Make preservative treatment in liquefied ammonia storage premises face.
12. a kind of control device that a kind of liquefied ammonia security control method as claimed in claim 10 is realized, it is characterised in that：Institute
Exhaust fan system is stated, is provided with exhaust fan, and at 3 meters far from ground fore-and-aft distance of room of liquefied ammonia storage, lateral distance 6 meters one.
13. a kind of control device that a kind of liquefied ammonia security control method as claimed in claim 10 is realized, it is characterised in that：Institute
Spray system is stated, upper layer spray S type coil pipes are provided with, lower layer sprays S type coil pipes, and lower layer sprays S type coil pipe internally piloted valves, upper layer spray
S type coil pipe internally piloted valves, cross shower are drenched, upper layer spray S type coil pipes are located at liquefied ammonia 1 meter of roof portion fore-and-aft distance of storage, lower layer's spray
Leaching S type coil pipes are located at below the spray S types coil pipe of upper layer at 1 meter of fore-and-aft distance, and the spray S type coil pipes in the spray system are every
There is setting at the top of one liquid ammonia storage tank.
14. a kind of control device that a kind of liquefied ammonia security control method as claimed in claim 10 is realized, it is characterised in that：Institute
Air inducing emergency system is stated, air inducing emergency pipe line, liquefied ammonia air inducing emergency pump are provided with, underground liquefied ammonia slot feeds internally piloted valve, and air inducing is answered
Anxious pipeline one end leads in liquefied ammonia storage room, and the other end is connected with liquefied ammonia air inducing emergency pump, then feeds automatic control by underground liquefied ammonia slot
Valve, towards liquefied ammonia emergency tank in meet an urgent need about 20 centimetres of trench bottom away from liquefied ammonia below liquid level.
15. a kind of control device that a kind of liquefied ammonia security control method as claimed in claim 10 is realized, it is characterised in that：Institute
Liquefied ammonia pressure can system is stated, liquid ammonia storage tank is provided with（A/B/C/D）, liquefied ammonia pressure tank pipeline, liquefied ammonia pressure tank internally piloted valve, liquefied ammonia pressure tank pressure
Contracting machine, liquefied ammonia press tank to feed internally piloted valve, and liquefied ammonia presses tank for tank, standby tank teletransmission pressure gauge, standby tank gas alarm instrument, the liquefied ammonia storage
Tank（A/B/C/D）Emergent discharge unit is connect with liquefied ammonia pressure tank pipeline, presses tank internally piloted valve, liquefied ammonia to press tank compressor by liquefied ammonia,
Liquefied ammonia presses tank to feed internally piloted valve to liquefied ammonia pressure tank for tank, and liquefied ammonia presses tank to be equipped with standby tank teletransmission pressure gauge, standby tank gas for tank
Body alarm, liquefied ammonia pressure tank are equipped with shower water S type coil pipes for tank tank top.
16. a kind of control device that a kind of liquefied ammonia security control method as claimed in claim 10 is realized, it is characterised in that：Institute
Axial fan system is stated, axial flow blower is provided with（It blows）, axial flow blower（Air-breathing）, axial flow blower（It blows）Installed therein one
Sidewalls lower end is far from 40 centimeters of ground, axial flow blower（Air-breathing）It is mounted on and flow fan（It blows）Opposing sides lower end is far from ground
200 centimeters.
17. a kind of control device that a kind of liquefied ammonia security control method as claimed in claim 10 is realized, it is characterised in that：Institute
Shower water emergency system to be stated, shower water is provided with and meets an urgent need head tank, head tank meet an urgent need internally piloted valve, injector, spray emergency button,
The shower water meet an urgent need head tank exit be equipped with head tank meet an urgent need internally piloted valve, injector, shower water meet an urgent need head tank in have-
35 DEG C of chilled brines run leakage ammonia, cooling for spray-absorption, and spray emergency button is used for manual one-touch switch head tank and answers
Anxious internally piloted valve, the shower water emergency system are connected with shower water main pipe line in spray system, in spray system exception, manually
One-touch switch head tank is met an urgent need internally piloted valve, and shower water -35 DEG C of chilled brines in head tank of meeting an urgent need can be run to spray system
Shower water main pipe line and upper layer spray S types coil pipe after middle shower water internally piloted valve, lower layer sprays at S type coil pipes, liquid ammonia storage tank top S
At type coil pipe.
18. a kind of liquefied ammonia security control device as described in claim 13 or 17, it is characterised in that：The spray system or
Shower water emergency system sprays S type coil pipe entrances and is equipped with upper layer spray S type coil pipe internally piloted valves at the middle and upper levels, and lower layer sprays S types
Coil pipe entrance is equipped with lower layer's spray S type coil pipe internally piloted valves, and upper layer sprays S types coil pipe and lower layer, and to spray S type coil pipe imports total
Pipe input end is equipped with shower water internally piloted valve, feeding spraying pump.
19. a kind of liquefied ammonia security control device as claimed in claim 18, it is characterised in that：The upper layer sprays S type disks
Pipe sprays S type coil pipes with lower layer and is equipped with cross shower, and the cross shower is by taking over, take over five is logical, shower elbow, shower
Connector, shower composition, it is easy to assembly, it takes over and is connect with spray supply mains, take over five is logical to be connect with shower short circuit by silk mouth,
It is connect again by silk mouth with shower elbow by shower short circuit, shower elbow is connect with shower connector by silk mouth, shower connection
Device and shower are connect by matching mantle fiber mouth and are formed, and easy to assembly, the take over five of the cross shower is logical can to install 4 showers,
Can multi-angle sprayed, to fully absorb and cool down, shower connector one end shower elbow is connected by silk mouth, the other end
It is connect with shower by matching mantle fiber mouth, the shower connector has short circuit sleeve, connection lifting lug, is welded to connect with silk braid, short circuit set
Cylinder is internal to have through-hole, the shower edge, at 15 degree of angles, to be sprayed with abundant mist with horizontal plane α.
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| CN201810216472.9A CN108443708B (en) | 2018-03-16 | 2018-03-16 | Liquid ammonia security control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163216A (en) * | 2018-09-26 | 2019-01-08 | 苏州市创优净化科技有限公司 | A kind of safety intelligent type liquid ammonia vaporization system |
| CN109621624A (en) * | 2018-12-18 | 2019-04-16 | 安徽海螺集团有限责任公司 | The control method of safety instrumented systems in carbon dioxide capture system liquefied ammonia region |
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| CN109163216B (en) * | 2018-09-26 | 2024-02-09 | 苏州市创优净化科技有限公司 | Safe intelligent liquid ammonia vaporization system |
| CN109621624A (en) * | 2018-12-18 | 2019-04-16 | 安徽海螺集团有限责任公司 | The control method of safety instrumented systems in carbon dioxide capture system liquefied ammonia region |
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