CN104965048B - Liquid ammonia content rapid measurement method - Google Patents
Liquid ammonia content rapid measurement method Download PDFInfo
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- CN104965048B CN104965048B CN201510276777.5A CN201510276777A CN104965048B CN 104965048 B CN104965048 B CN 104965048B CN 201510276777 A CN201510276777 A CN 201510276777A CN 104965048 B CN104965048 B CN 104965048B
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Abstract
The invention relates to a liquid ammonia processing method, and concretely relates to a liquid ammonia content rapid measurement method. Constant volume sampling is carried out to reduce the measurement error caused by unable close-range accurate reading of the sampling volume due to natural volatilization of liquid ammonia and the smell of volatilized ammonia; an evaporation sealing device is adopted to avoid the error brought by the entrance of extraneous impurities to an evaporation device in the transportation and evaporation process of a liquid ammonia sample; and rapid measurement is realized to reduce the volatilization speed, reduce the evaporation loss of impurity water of the liquid ammonia and reduce the measurement error. Sample low-temperature heating is carried out to make an experiment result meet an error requirement and improve the analysis speed in order to meet practical production requirements; and constant volume sampling is carried out to realize safe sampling of the liquid ammonia and avoid body damages to sampling personnel. The evaporation sealing device is arranged to reduce damages of the liquid ammonia to human body in the sample sending process. A special evaporation frame is arranged to improve the safety in the liquid ammonia evaporation process.
Description
Technical field
The present invention relates to liquid ammonia treatment process, in particular to a kind of liquefied ammonia content method for fast measuring.
Background technology
Liquefied ammonia belongs to broad-spectrum chemical products, belongs to hazardous chemical again, has one in actual samples and measurement
The risk of a little personal injuries.Liquefied ammonia tank car or ammonia storage tank probe tube or blow-off pipe are generally passed through in liquefied ammonia sampling, to empty sampling, by liquid
Ammonia is put to Li Senke receiver.Liquefied ammonia exist 3.0mpa about pressure, the probe tube that has of scene is flexible pipe, easy during sampling
Shake, in the easy splash of liquefied ammonia to the sampling person, causes freezing injury；Wind vector, liquefied ammonia volatilize naturally all easily to sampling
People brings certain injury risk.Simultaneously as the abnormal smells from the patient of the natural volatilization of liquefied ammonia and ammonia volatilization makes the sampling people cannot low coverage
From reading sample volume exactly, there is certain measurement error.
The measuring method adopting at present mainly has volumetric method and gravimetric method, for Grade A (ammonia content >=99.8%) and conjunction
The liquefied ammonia of lattice product (ammonia content >=99.6%) can be measured using the fairly simple volumetric method of operation.Measure in volumetric method
In, Li Senke receiver is uncovered, and the liquefied ammonia taking needs to deliver to laboratory, and extraneous impurity is easily accessible in analytical tool, band
Come analytical error or even the accuracy of impact analysis result；Meanwhile, in handling process, uncovered liquefied ammonia is in boiling-like body,
Easily spill, easily bring personal injury and cause measurement inaccurate.Naturally the time that volatilization needs in fume hood is long,
20 DEG C of room temperature, humidity is in 40% laboratory environment, and liquefied ammonia evaporates into room temperature needs 6 hours about, and analysis time is long, chemical examination
Result is delayed, can not meet the production requirements such as field unloading ammonia.Liquefied ammonia volatilizees naturally, and the time is long, and in liquefied ammonia, moisture is also waved simultaneously
Send out, cause measurement result less than normal.
The Chinese invention patent of such as Application No. 201210495942.2, it discloses one kind and unloads ammonia device, including collection
Flow container, defeated ammonia pipe, unload ammonia pump and tank used for storing ammonia；Ammon entry hole is provided with liquid collecting tank and tank used for storing ammonia tank body and goes out ammonia mouth, defeated
Ammonia pipe is connected with the ammon entry hole on liquid collecting tank；Shut-off valve is provided with tube for transfusion；This apparatus structure is simple, easy to implement, can have
Effect prevents ammoniacal liquor when unloading ammonia from leaking, it is to avoid, to air, water body and soil pollution, safe operation is reliable for leakage ammonia.But this unloads ammonia dress
Put and there is no safe sampler and defecator it is impossible to meet liquefied ammonia sampling and wanting in realization purification during unloading safely
Ask.
For example Authorization Notice No. is the Chinese utility model patent of cn203363667u again, it discloses a kind of ammonia factory tank car
Unload ammonia device, including ammonia collecting tank, ammonia collecting tank connects ammonia condenser by pipeline, and ammonia condenser connects ammonia pressure by pipeline
Machine, also includes oil filling riser, and the liquid-phase outlet of oil filling riser connects ammonia collecting tank by pipeline, and pipeline and ammonia pressure are passed through in the gas phase import of oil filling riser
Pipeline between machine and ammonia condenser connects.This ammonia factory tank car unloads ammonia device and passes through to arrange oil filling riser, and the liquid phase of oil filling riser is collected with ammonia
Groove connects, gas phase is connected with ammonia compressor outlet line, for giving ammonia collecting tank ammoniated in normal production using liquefied ammonia tank vehicle,
Do not affect device normally to run, and realize economical operation.But this unloads and is not provided with liquefied ammonia sampling analysis device in ammonia device.But this unloads
Ammonia device does not have safe sampler and defecator it is impossible to meet liquefied ammonia sampling and realization purification during unloading safely
Require.
Content of the invention
The liquefied ammonia content method for fast measuring of the present invention, the sampler of setting piston structure, sampler setting elasticity
Interface, realizes the tight connection with liquefied ammonia tank car probe tube or ammonia tank probe tube；By the motion of piston, realize the closing of liquefied ammonia
Sampling, instead front samples to empty, and liquefied ammonia splashes and liquefied ammonia evaporation brings injury to sampling personnel；Sampler passes through to taking
Sample cavity constant volume, realizes constant volume samapling, it is to avoid cannot accurately read liquefied ammonia sample volume in the environment of liquefied ammonia volatilization, raising takes
The accuracy of sample result.
In order to realize above-mentioned purpose of design, the scheme that the present invention adopts is as follows,
A kind of liquefied ammonia content method for fast measuring, comprises the following steps:
Elastic interface in sampler is connected with liquefied ammonia tank car probe tube or ammonia tank probe tube, by closing bayonet socket,
Realize closely connecting；
Hand push piston is pushed into sampling cavity bottom, the constant volume of sampling cavity is 200ml, closes setting-out valve, is pulled outwardly hand push and lives
Fill in outermost end, realize closing constant volume samapling；
Setting-out pipe is pressed close to the inwall of receiver, open and put valve in a suitable place to breed, hand push piston is pushed into bottom, the liquefied ammonia got is tried
Sample is put in receiver；
After discharging liquid ammonia sample, the elastic construction part of closed evaporating device is connected with receiver；
Receiver and closed evaporating device are fixed on break-in test tube support；
Waste liquid processor discharges water to initial liquid level, adjust main support height, enclosed area in adjustment closed evaporating device
The angle of domain and ammonia emission pipe is it is ensured that in ammonia emission pipe insertion waste liquid processor water, make cooling water fall within waste liquid processor
Interior；
Adjust the length of telescopic bar of the first extension tongs and the second extension tongs it is ensured that receiver is in suitable angle；
Low-temperature heat is carried out to liquid ammonia sample；
Low-temperature heat is evaporated completely to liquefied ammonia, stops heating in water bath, receiver and break-in test tube support is moved into fume hood, treats
Tubing surfaces drying is anhydrous, is conventionally chemically examined；
The water level of waste liquid processor reaches maximum water level, opens drain valve, waste water is drained into centralised arrangement, by adjusting
Whole cooling water inflow and drain valve are it is ensured that suitable liquid level, it is to avoid volatilization ammonia emission, in the air, brings pollution to environment.
In any of the above-described scheme preferably, this measuring method is passed through to substitute currently using the method for liquefied ammonia closing sampling
Uncovered to empty sampling, because liquefied ammonia sampling is with certain pressure, it is to avoid during sampling, liquefied ammonia splashes and liquefied ammonia evaporates to sampling
The injury of personnel.
In any of the above-described scheme preferably, the method that this measuring method adopts constant volume samapling, by sampler
Constant volume, realizes once accurately sampling, it is to avoid cannot accurately read liquefied ammonia sample volume in the environment of liquefied ammonia volatilization, improves sampling
The accuracy of result.
In any of the above-described scheme preferably, this measuring method adopts the quick evaporation method of liquefied ammonia, improves liquefied ammonia measurement
Speed, by the method for heating in water bath or the permanent heat of low temperature, carries out liquefied ammonia volatilization in the range of 0-10 DEG C, improves evaporation rate, subtract
Few because liquefied ammonia volatilizees, the time is long, and in liquefied ammonia, the impurity volatile quantity such as moisture is also big, reduces measurement error.
In any of the above-described scheme preferably, the method that this measuring method adopts liquefied ammonia closed evaporating, reduces in transport
With the entrance of introduced contaminants during analysis, improve measurement accuracy.
In any of the above-described scheme preferably, this measuring method adopts method of disposal in liquefied ammonia evaporation exhaust gas centralized, reduces
Pollution to chemical examination environment, clean environment firendly.
In any of the above-described scheme preferably, described liquid ammonia sample low-temperature heat includes mode and the low temperature of heating in water bath
Permanent hot mode.
In any of the above-described scheme preferably, the mode of described heating in water bath is to open cooler cock it is ensured that cooling water
Equably drench part on liquefied ammonia in receiver, the temperature of cooling water can not be higher than 10 DEG C, take responsible measures, it is to avoid cooling water
Pollution liquid ammonia sample.
In any of the above-described scheme preferably, described low temperature perseverance hot mode is that the surface temperature ensureing receiver is less than
Room temperature, avoids impurity pollution liquid ammonia sample using forced ventilation.
In any of the above-described scheme preferably, when the water level of described waste liquid processor reaches maximum water level, the row of unlatching
Water valve, waste water is drained into centralised arrangement, by adjusting cooling water inflow and drain valve it is ensured that suitable liquid level.
In any of the above-described scheme preferably, described closed evaporating device includes evaporating area and ammonia emission area.
In any of the above-described scheme preferably, described evaporating area is placed up incline structure, lower end width, and top is narrow,
Become narrow gradually, the ammonia volatilizing upwards, collide sloping portion, in the reflowable receiver to Li Senke of the impurity carrying, reduce and divide
Analysis error.
In any of the above-described scheme preferably, described evaporating area and ammonia emission area are connected by elastic interface, angle
Flexibly arrange, convenient analysis test sample.
In any of the above-described scheme preferably, described break-in test tube support include main support, top end holder, first stretch
Pincers, the second extension tongs and bayonet socket, break-in test tube support conveniently can be fixed on surrounding with 360 degree of rotation adjustment direction by bayonet socket
Firm place, is evaporated.
In any of the above-described scheme preferably, described sampler be airtight constant volume sampler, it include elastic interface,
Probe tube, sampling cavity, hand push piston, setting-out pipe and setting-out valve.
In any of the above-described scheme preferably, the height of described main support can up-down adjustment；Main support is provided with anti-skidding
Lancet and Antiskid handle.
In any of the above-described scheme preferably, one end of the first extension tongs and the second extension tongs is provided with anti-skid structure, Gu
Determine receiver；The other end of the first extension tongs and the second extension tongs is fixed on test tube main support by bayonet socket.
In any of the above-described scheme preferably, the bottom of described ammonia emission pipe is stretched in waste liquid processor.
In any of the above-described scheme preferably, described waste liquid processor is provided with drain valve；Pipeline after drain valve
On be connected with scupper hose.
Brief description
Fig. 1 is the structure diagram of a preferred embodiment of Liquid Ammonia Treatment system in liquefied ammonia content method for fast measuring.
Fig. 2 is the structural representation according to liquefied ammonia rapid measurement device in the liquefied ammonia content method for fast measuring of the present invention.
Label in accompanying drawing:
Constant volume sampler 1, break-in test tube support 2, closed evaporating device 3, liquid waste treating apparatus 4, elastic interface 5, sampling
Pipe 6, sampling cavity 7, hand push piston 8, setting-out pipe 9, main support 10, top end holder 11, the first extension tongs 12, the second extension tongs 13,
Bayonet socket 14, receiver 15, ammonia emission pipe 16, sloping portion 17, setting-out valve 18, drain valve 19.
Specific embodiment
That the following description is substantially merely exemplary and be not intended to limit the disclosure, application or purposes.Below
In conjunction with Figure of description, the specific embodiment of liquefied ammonia content method for fast measuring of the present invention is further described.
The liquefied ammonia content method for fast measuring of the present invention, by constant volume samapling, break-in test tube support, evaporation locking device and
Sample low-temperature heat collective effect realizes the safely and fast mensure of liquefied ammonia content.
By following effect has been reached using the measuring method of the present invention: improve the safety of analysis:
Firstth, pass through constant volume samapling.Realize the safety sampling of liquefied ammonia, it is to avoid the personal injury to sampling personnel；Setting is steamed
Send out locking device, the liquefied ammonia during minimizing sample presentation is to personal injury；By spy's evaporation jig, improve in liquefied ammonia volatilization process
Safety.
Secondth, improve precision of analysis.By constant volume samapling, reduce and waved due to the natural volatilization of liquefied ammonia and ammonia
The abnormal smells from the patient sent out makes sampling people closely cannot read sample volume, the measurement error causing exactly；By evaporating locking device,
Avoid in liquid ammonia sample transport and evaporation process, extraneous impurity enters in evaporator, brings error；Quick by realizing
Measurement, reduces evaporation rate, reduces the evaporation loss of liquefied ammonia water impurity, reduces measurement error.
As shown in Figure 1 and Figure 2, a kind of liquefied ammonia content method for fast measuring, comprises the following steps:
Elastic interface in sampler is connected with liquefied ammonia tank car probe tube or ammonia tank probe tube, by closing bayonet socket,
Realize closely connecting；
Hand push piston 8 is pushed into sampling cavity 7 bottom, the constant volume of sampling cavity 7 is 200ml, closes setting-out valve 18, outwards shakes hands
Push piston 8, to outermost end, realizes closing constant volume samapling；
Setting-out pipe 9 is pressed close to the inwall of receiver 15, open and put valve 18 in a suitable place to breed, hand push piston 8 is pushed into bottom, by get
Liquid ammonia sample is put in receiver 15；
After discharging liquid ammonia sample, the elastic construction part of closed evaporating device 3 is connected with receiver 15；
Receiver 15 and closed evaporating device 3 are fixed on break-in test tube support 2；
Waste liquid processor 4 discharges water to initial liquid level, adjust main support 10 height, seal in adjustment closed evaporating device 3
The angle of closed region and ammonia emission pipe 16 is it is ensured that in ammonia emission pipe insertion waste liquid processor water, make cooling water fall within waste liquid
In processor 4；
Adjust the length of telescopic bar of the first extension tongs 12 and the second extension tongs 13 it is ensured that receiver 15 is in suitable angle；
Low-temperature heat is carried out to liquid ammonia sample；
Low-temperature heat is evaporated completely to liquefied ammonia, stops heating in water bath, receiver 15 and break-in test tube support 2 are moved into ventilation
Cupboard, treats that tubing surfaces drying is anhydrous, is conventionally chemically examined；
The water level of waste liquid processor 4 reaches maximum water level, opens drain valve 19, waste water is drained into centralised arrangement, leads to
Cross adjustment cooling water inflow and drain valve 19 it is ensured that suitable liquid level, it is to avoid volatilization ammonia emission, in the air, brings dirt to environment
Dye.
In the present embodiment, this measuring method is by substituting current uncovered sky is taken using the method for liquefied ammonia closing sampling
Sample, because liquefied ammonia sampling is with certain pressure, it is to avoid during sampling, liquefied ammonia splashes and liquefied ammonia evaporates the injury to sampling personnel.
In the present embodiment, the method that this measuring method adopts constant volume samapling, by sampler constant volume, realizing once
Accurately sample, it is to avoid cannot accurately read liquefied ammonia sample volume in the environment of liquefied ammonia volatilization, improve the accuracy of sampling result.
In the present embodiment, this measuring method adopts the quick evaporation method of liquefied ammonia, improves liquefied ammonia measuring speed, by water-bath
Heating or the method for the permanent heat of low temperature, carry out liquefied ammonia volatilization in the range of 0-10 DEG C, improve evaporation rate, reduce due to liquefied ammonia volatilization
Time is long, and in liquefied ammonia, the impurity volatile quantity such as moisture is also big, reduces measurement error.
In the present embodiment, the method that this measuring method adopts liquefied ammonia closed evaporating, reduces during transport and analysis
The entrance of introduced contaminants, improves measurement accuracy.
In the present embodiment, this measuring method adopts method of disposal in liquefied ammonia evaporation exhaust gas centralized, reduces to chemical examination environment
Pollution, clean environment firendly.
In the present embodiment, described liquid ammonia sample low-temperature heat includes mode and the low temperature perseverance hot mode of heating in water bath.
In the present embodiment, the mode of described heating in water bath is to open cooler cock it is ensured that cooling water equably drenches is holding
Part on liquefied ammonia in receiver 15, the temperature of cooling water can not be higher than 10 DEG C, takes responsible measures, it is to avoid cooling water pollution liquefied ammonia tries
Sample.
In the present embodiment, described low temperature perseverance hot mode is that the surface temperature ensureing receiver 15 is less than room temperature, adopts
Forced ventilation avoids impurity pollution liquid ammonia sample.
In the present embodiment, when the water level of described waste liquid processor 4 reaches maximum water level, open drain valve 19, will give up
Water is drained into centralised arrangement, by adjusting cooling water inflow and drain valve 19 it is ensured that suitable liquid level.
In the present embodiment, described closed evaporating device 3 includes evaporating area and ammonia emission area.
In the present embodiment, described evaporating area is placed up incline structure, lower end width, and top is narrow, becomes narrow gradually, upwards
The ammonia of volatilization, collides sloping portion, in the reflowable receiver to Li Senke of the impurity carrying, reduces analytical error.
In the present embodiment, described evaporating area and ammonia emission area are connected by elastic interface, and angle is flexibly arranged, convenient
Analysis test sample.
In the present embodiment, described break-in test tube support 2 include main support 10, top end holder 11, the first extension tongs 12,
Two extension tongs 13 and bayonet socket 14, break-in test tube support 2 conveniently can be fixed on surrounding with 360 degree of rotation adjustment direction by bayonet socket 14
Firm place, be evaporated.
In the present embodiment, described sampler is airtight constant volume sampler 1, and it includes elastic interface 5, probe tube 6, takes
Sample chamber 7, hand push piston 8, setting-out pipe (9) and setting-out valve 18.
In the present embodiment, the height of described main support 10 can up-down adjustment；Main support 10 is provided with anti-skidding lancet and prevents
Sliding handle.
In the present embodiment, receiver selects Li Senke receiver, and it is mainly used in measuring liquefied ammonia content and impurity.
In the present embodiment, one end of the first extension tongs 12 and the second extension tongs 13 is provided with anti-skid structure, fixing receiver
15；The other end of the first extension tongs 12 and the second extension tongs 13 is fixed on test tube main support 10 by bayonet socket.
In the present embodiment, the bottom of described ammonia emission pipe 16 is stretched in waste liquid processor 4.
In the present embodiment, described waste liquid processor 4 is provided with drain valve 19；It is connected with pipeline after drain valve 19
Scupper hose.
Another aspect of the present invention discloses a kind of liquefied ammonia safe and simple measurement apparatus, as shown in Figure 1 and Figure 2.
A kind of liquefied ammonia content safe and simple measurement apparatus, this device realizes the peace of liquefied ammonia by way of multiple unit constructions
Entirely quickly measure, this measurement apparatus is provided with airtight constant volume sampler 1, break-in test tube support 2, closed evaporating device 3 and waste liquid
Reason device 4.By being applied in combination of above-mentioned part, realize the safe and simple measurement of liquefied ammonia.
This device realizes the sealing constant volume samapling of liquefied ammonia by specific assignment sampling device, improves the accuracy of sampling, realizes safety
Sampling；Setting receiver closed evaporating area, reduces the pollution in experimentation；Setting can be propped up the safety test tube of multi-angle rotary
Frame is it is ensured that sample and the safety in evaporation process and practicality；Setting waste liquid absorption plant, realizes clean environment firendly.
In the present embodiment, described airtight constant volume sampler 1 includes elastic interface 5, probe tube 6, sampling cavity 7, hand push work
Plug 8, setting-out pipe 9 and setting-out valve 18.
Airtight constant volume sampler 1 can be used alone, and realizes the closing of liquefied ammonia, safety, constant volume samapling.Airtight constant volume samapling
Device 1 is applied in combination with break-in test tube support 2, closed evaporating device 3, liquid waste treating apparatus 4, meets safely, conveniently dividing of liquefied ammonia
Analysis requires.
In the present embodiment, the front end of described probe tube 6 is connected with elastic interface 5；The rear end of probe tube 6 and sampling cavity 7
Connect；Sampling cavity 7 is connected with setting-out pipe 9.Elastic interface 5 achieves and closely the connecting of liquefied ammonia tank car probe tube or ammonia tank probe tube
Connect.
In the present embodiment, the constant volume of described sampling cavity 7 is 200ml, and error is ± 5ml, by piston operation, realizes liquid
The accurate sealing of ammonia measures；Heat insulation handle is arranged on sampling cavity 7, uses for when sampling, it is to avoid cold injury.
Referring next to shown in Fig. 2, the structural representation of liquefied ammonia content safe and simple measurement apparatus.
In the present embodiment, described break-in test tube support 2 include main support 10, top end holder 11, the first extension tongs 12,
Two extension tongs 13 and bayonet socket 14.
In the present embodiment, the height of described main support 10 can up-down adjustment, highly can be adjusted flexibly, according to concrete chemical examination
Condition adjustment height；Main support 10 is provided with anti-skidding lancet and Antiskid handle.Main support is provided with anti-skidding lancet, middle and upper part top
It is provided with Antiskid handle between support 11 and extension tongs 12.
In the present embodiment, one end of described first extension tongs 12 and the second extension tongs 13 is provided with anti-skid structure, and fixation is held
Receiver 15；The other end of the first extension tongs 12 and the second extension tongs 13 is fixed on test tube main support 10 by bayonet socket, Ke Yiling
Adjust upper-lower height alively.
In the present embodiment, receiver preferentially selects Li Senke receiver, and it is mainly used in measuring the purity of liquefied ammonia.Protection
Gb536-65 liquid synthesizes ammonia standard.Capacity 500ml, tubule indexes 0.02ml, tubule capacity 2ml, and extra heavy pipe indexes 10ml, total length
440mm.Thicken high-boron-silicon glass from high-quality to produce, have good physicochemical property, precisely, groove is clear for capacity, in strict accordance with
Industry standard executes, and technique is particular about, good looking appearance, and packaging is particular about！
In the present embodiment, the adjustable in length of described first extension tongs 12 and the second extension tongs 13.
The first extension tongs 12(top in break-in test tube support 2), the second extension tongs 13(bottom) can be adjusted by screw
Whole length, realizes fixed analytical tool and keeps the suitable inclination number of degrees.
In the present embodiment, described bayonet socket 14 can be with 360 degree of rotation adjustment direction.Bayonet socket 14 is connected by fixed screw,
Can 360 ° of adjustment direction, convenient utilize surrounding fixed position, break-in test tube support 2 is fixed on the position of needs.
In the present embodiment, described closed evaporating device 3 includes sloping portion 17 and ammonia emission pipe 16.
In the present embodiment, described closed evaporating device 3 is the structure that is inclined upwardly, and one end band of sloping portion 17 is flexible
Sealed interface is connected with receiver 15.
In the present embodiment, described sloping portion 17 is lower end width, the structure becoming narrow gradually from lower end to top.Rake
Points 17 top is narrow, becomes narrow gradually from top to bottom, and the impurity reducing in liquefied ammonia evaporation carries, and the narrowest place internal diameter 30cm is it is ensured that steam
Send out speed, reduce evaporation error.
In the present embodiment, the top of described sloping portion 17 and the top of ammonia emission pipe 16 are provided with elastic interface.Can
Realize 45 ° of adjustment to 135 ° of angles, facilitate test sample.
In the present embodiment, the internal diameter of described ammonia emission pipe 15 is 30cm.
In the present embodiment, described top end holder 11 is provided with mounting structures, and one end support of this mounting structures is steamed in closing
The top of transmitting apparatus 3；The other end of mounting structures is connected by bayonet socket with main support 10, and height can be adjusted flexibly.
In the present embodiment, the bottom of described ammonia emission pipe 16 is stretched in waste liquid processor 4.
In the present embodiment, described waste liquid processor 4 is provided with drain valve 19；It is connected with pipeline after drain valve 19
Boiled off liquor access centralized processor can be processed, be reduced the pollution to environment by scupper hose.
In the present embodiment, described waste liquid processor 4 carries initial water level line and maximum water level.Experiment starts, and gives up
Water level in liquid processor 4 must not be less than initial water bit line；In evaporation process, the water level in waste liquid processor 4 must not be higher than
High-water line.
In sum, the liquefied ammonia content safe and simple measurement apparatus of the present invention have the advantage that airtight constant volume sampler 1
Can be used alone, realize the closing of liquefied ammonia, safety, constant volume samapling；Airtight constant volume sampler 1 and break-in test tube support 2, closing
Vaporising device 3, liquid waste treating apparatus 4 are applied in combination, and the safely, conveniently analysis meeting liquefied ammonia requires；In break-in test tube support 2
First extension tongs 12(top), the second extension tongs 13(bottom) length can be adjusted by screw, realize fixed analyser
Device keeps the suitable inclination number of degrees；Break-in test tube support 2 can 360 degree of adjustment direction, convenient utilize surrounding fixed position, will become
It is fixed on the position of needs to test tube support 2；The lower end width of the sloping portion 17 of closed evaporating device 3, top is narrow, from top to bottom
Become narrow gradually, the impurity reducing in liquefied ammonia evaporation carries, the narrowest place internal diameter 30cm, it is ensured that evaporation rate, reduces evaporation error.
It will be apparent to those skilled in the art that the liquefied ammonia content safe and simple measurement apparatus of the present invention are included in this specification
The combination in any of each several part.As space is limited and in order that description is simple and clear, these combinations are not discussed in detail by here one by one, but
After having seen this specification, the scope of the present invention that the combination in any of each several part being made up of this specification is constituted has not been sayed certainly
Bright.
Claims (14)
1. a kind of liquefied ammonia content method for fast measuring is it is characterised in that comprise the following steps:
Elastic interface in sampler is connected with liquefied ammonia tank car probe tube or ammonia tank probe tube, by closing bayonet socket, realizes
Closely connect, described sampler is airtight constant volume sampler (1), and it includes elastic interface (5), probe tube (6), sampling cavity
(7), hand push piston (8), setting-out pipe (9) and setting-out valve (18)；
Hand push piston (8) is pushed into sampling cavity (7) bottom, the constant volume of sampling cavity (7) is 200ml, closes setting-out valve (18), outwards
Handle push piston (8), to outermost end, realizes closing constant volume samapling；
Setting-out pipe (9) is pressed close to the inwall of receiver (15), open setting-out valve (18), hand push piston (8) is pushed into bottom, will take
To liquid ammonia sample be put in receiver (15)；
After discharging liquid ammonia sample, the elastic construction part of closed evaporating device (3) is connected with receiver (15)；
Receiver (15) and closed evaporating device (3) are fixed in break-in test tube support (2)；
Waste liquid processor (4) discharges water to initial liquid level, adjust main support (10) highly, in adjustment closed evaporating device (3)
The angle of closed area and ammonia emission pipe (16) is it is ensured that in ammonia emission pipe insertion waste liquid processor water, make cooling water fall within
In waste liquid processor (4)；
Adjust the length of telescopic bar of the first extension tongs (12) and the second extension tongs (13) it is ensured that receiver (15) is at suitable angle
Degree；
Low-temperature heat is carried out to liquid ammonia sample；
Low-temperature heat is evaporated completely to liquefied ammonia, stops heating in water bath, and receiver (15) and break-in test tube support (2) are moved into ventilation
Cupboard, treats that tubing surfaces drying is anhydrous, is conventionally chemically examined；
The water level of waste liquid processor (4) reaches maximum water level, opens drain valve (19), waste water is drained into centralised arrangement, leads to
Cross adjustment cooling water inflow and drain valve (19) it is ensured that suitable liquid level, it is to avoid volatilization ammonia emission, in the air, brings to environment
Pollution.
2. liquefied ammonia content method for fast measuring as claimed in claim 1 is it is characterised in that this measuring method is by adopting liquefied ammonia
The method of closing sampling substitute current uncovered to empty sampling, because liquefied ammonia sampling is with certain pressure, it is to avoid liquid during sampling
Ammonia splashes and liquefied ammonia evaporates the injury to sampling personnel.
3. liquefied ammonia content method for fast measuring as claimed in claim 1 is it is characterised in that this measuring method adopts constant volume samapling
Method, by sampler constant volume, realizing once accurately sampling, it is to avoid cannot accurately read in the environment of liquefied ammonia volatilization
Liquefied ammonia sample volume, improves the accuracy of sampling result.
4. liquefied ammonia content method for fast measuring as claimed in claim 1 is it is characterised in that this measuring method adopts liquefied ammonia quick
Evaporation method, improves liquefied ammonia measuring speed, by the method for heating in water bath or the permanent heat of low temperature, carries out liquefied ammonia in the range of 0-10 DEG C
Volatilization, improves evaporation rate, and minimizing is long due to the liquefied ammonia volatilization time, and in liquefied ammonia, moisture impurity volatile quantity is also big, reduces measurement and misses
Difference.
5. liquefied ammonia content method for fast measuring as claimed in claim 1 is it is characterised in that this measuring method adopts liquefied ammonia to close
The method of evaporation, reduces the entrance of introduced contaminants during transport and analysis, improves measurement accuracy.
6. liquefied ammonia content method for fast measuring as claimed in claim 1 is it is characterised in that this measuring method adopts liquefied ammonia to evaporate
Method of disposal in exhaust gas centralized, reduces the pollution to chemical examination environment, clean environment firendly.
7. liquefied ammonia content method for fast measuring as claimed in claim 1 is it is characterised in that described liquid ammonia sample low-temperature heat bag
Include mode and the low temperature perseverance hot mode of heating in water bath.
8. liquefied ammonia content method for fast measuring as claimed in claim 7 is it is characterised in that the mode of described heating in water bath is to open
Open cooler cock it is ensured that cooling water equably drenches part on liquefied ammonia in receiver (15), the temperature of cooling water can not be higher than 10
DEG C, take responsible measures, it is to avoid cooling water pollution liquid ammonia sample.
9. liquefied ammonia content method for fast measuring as claimed in claim 7 is it is characterised in that described low temperature perseverance hot mode is to ensure
The surface temperature of receiver (15) is less than room temperature, avoids impurity pollution liquid ammonia sample using forced ventilation.
10. liquefied ammonia content method for fast measuring as claimed in claim 1 is it is characterised in that the water of described waste liquid processor (4)
When position reaches maximum water level, open drain valve (19), waste water is drained into centralised arrangement, by adjusting cooling water inflow and draining
Valve (19) is it is ensured that suitable liquid level.
11. liquefied ammonia content method for fast measurings as claimed in claim 1 are it is characterised in that described break-in test tube support (2) is wrapped
Include main support (10), top end holder (11), the first extension tongs (12), the second extension tongs (13) and bayonet socket (14), bayonet socket (14) can
With 360 degree of rotation adjustment direction, the convenient firm place that break-in test tube support (2) is fixed on surrounding, it is evaporated.
12. liquefied ammonia content method for fast measurings as claimed in claim 11 are it is characterised in that the height of described main support (10)
Can up-down adjustment；Main support (10) is provided with anti-skidding lancet and Antiskid handle.
13. liquefied ammonia content method for fast measurings as claimed in claim 1 are it is characterised in that the first extension tongs (12) and second
One end of extension tongs (13) is provided with anti-skid structure, fixing receiver (15)；First extension tongs (12) and the second extension tongs (13)
The other end is fixed on test tube main support (10) by bayonet socket.
14. liquefied ammonia content method for fast measurings as claimed in claim 1 are it is characterised in that set on described waste liquid processor (4)
There is drain valve (19)；It is connected with scupper hose on pipeline after drain valve (19).
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| CN111398086A (en) * | 2020-04-02 | 2020-07-10 | 台州龙江化工机械科技有限公司 | Liquid ammonia water content measuring device and measuring method thereof |
| EP4184130A1 (en) * | 2021-11-19 | 2023-05-24 | Yara International ASA | System for monitoring the liquid level in a mixture of a gas and a liquid comprising two intermiscible components having different densities and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05264537A (en) * | 1992-03-19 | 1993-10-12 | Meidensha Corp | Method and apparatus for measuring concentration of organic acid and ammonia for digested sludge |
| JP2003279556A (en) * | 2002-03-26 | 2003-10-02 | Sumitomo Metal Mining Co Ltd | Method of quantitatively determining ammonia |
| HRPK20030176B3 (en) * | 2003-03-11 | 2007-04-30 | Vukomanović Stevan | Device for automatic and programmed sampling and dosing of liquid mediums |
| JP4574328B2 (en) * | 2004-11-10 | 2010-11-04 | キヤノン株式会社 | Sample temperature controller |
| CN201083640Y (en) * | 2007-09-13 | 2008-07-09 | 宝山钢铁股份有限公司 | Liquid ammonia sampling device |
| CN202339287U (en) * | 2011-11-23 | 2012-07-18 | 攀钢集团钛业有限责任公司 | Titanium tetrachloride sampler |
| CN202533313U (en) * | 2012-02-17 | 2012-11-14 | 中国石油天然气股份有限公司 | Evaporation device for liquid ammonia analysis |
| CN202793854U (en) * | 2012-07-16 | 2013-03-13 | 新疆石油勘察设计研究院（有限公司） | Saturated liquid airtight sampling device capable of avoiding flash evaporation |
| CN203941032U (en) * | 2014-05-30 | 2014-11-12 | 中国石油化工股份有限公司 | Sulfide hydrogen sewage closed sampling device |
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