CN107917822A - The device and method for sampling and gasifying for more boiling point mixed liquors - Google Patents
The device and method for sampling and gasifying for more boiling point mixed liquors Download PDFInfo
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- CN107917822A CN107917822A CN201710184305.6A CN201710184305A CN107917822A CN 107917822 A CN107917822 A CN 107917822A CN 201710184305 A CN201710184305 A CN 201710184305A CN 107917822 A CN107917822 A CN 107917822A
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- spray chamber
- gasifier
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- chamber
- entrance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
Abstract
The present invention provides the device and method for sampling and gasifying for more boiling point mixed liquors, which includes sampling line and heated type gasifier；Spray chamber, the entrance of the outlet gasifier of spray chamber, and the cross-sectional area of the atomization chamber of spray chamber are provided with sampling line more than the entrance of spray chamber and the cross-sectional area of outlet.Mixed liquor absorbs heat after vaporization the steam that produces under the action of gravity and molecular thermalmotion in spray chamber, liquid weight molecule preferentially flows out spray chamber, gasifier is flowed into as early as possible, and in gasifier after endothermic gasification and be sufficiently mixed completely, avoid because of fractionation and caused by sampling deviation, so as to obtain homogeneous high-precision sample gas in gasifier exit, sampling quality is improved.
Description
Technical field
The invention belongs to liquid sample and field of gasification, and in particular, to for more boiling point mixed liquors sample and gasify
Device and method.
Background technology
More boiling point mixed liquors are widely present in nature and industrial production.When developing and utilizing this kind of mixed liquor, warp
Often require to extract it representative sample gas, to analyze it.If sampling is inaccurate, analysis result is with regard to nothing
Reference significance.Thus in industrial production, analysis, detection business procedure, the situation for avoiding sampling inaccurate that should try one's best occurs.It is but actual
In production process because in more boiling point mixed liquors, there are Multiple components, in mixed liquor in vaporescence, be easily fractionated
Phenomenon, so as to easily lead to taken sample and actual constituent deviation is excessive.Such as liquefied natural gas, the methane containing heterogeneity,
The component of a variety of different boilings such as ethane, propane, nitrogen.Under equal operating mode, usual low-boiling nitrogen first absorbs hot vapour,
It is the higher methane heat absorption vaporization of boiling point again, take second place ethane, again propane ...
The gaseous state and gas-liquid mixture molecule being fractionated into, the molecule containing a variety of different conditions.From molecular motion,
Under equal operating mode, there is very big difference in the speed of different molecular operation, and the usually light molecule speed of service is fast, weight molecule operation
Speed is slow, and the gas molecule speed of service is significantly larger than fluid molecule.The different motion characteristic of different molecular, is easy to cause and samples out
Existing deviation.
In order to solve the mixed liquor of this kind of more boiling components of such as liquefied natural gas because of fractionation and caused by harmful effect, people
Class have devised polytype sampler.Field is sampled in liquefied natural gas, company is permitted with French Ou Baitapiyouleya
Pi Aier Biellis Er Ehai invention a kind of liquefied natural gas sampling and vapourizing unit (refer to the patent No.：
The device that CN201180067294- samples liquefied natural gas and vaporizes) it is most representative.The device is described in the invention
Principle and implementation：Using special vapourizing unit, liquefied natural gas is set to be vaporized under 80 to 90bar supercriticality.
From the point of view of the actual product feature that principle and the said firm described in the invention produce, filled using the vaporization of this structure
Put, the pressure in vaporizer can not be made to remain in the range of 80 to 90bar all the time, thus actually can not be fundamentally
Solve the problems, such as fractionation reason and caused by sampling deviation, reason is as follows：
1st, it is expressly recited in the main vaporization member (see Fig. 3) of the invention, the primary structure of vaporizer, vaporizer both ends
There are two throttle orifices, ensure to vaporize indoor pressure as 80 to 90bar by the cooperation between holes, liquefied natural gas is existed
Supercriticality, i.e. temperature are less than -130 DEG C, and pressure completely vaporizes in the case of being higher than 80Bar.From the actual product of the said firm
With the overall structure (see Fig. 2) described in the invention and vaporizer (see Fig. 3) apparently, which is substantially a check valve, low
After warm liquified natural gas flows through check valve, if the pressure for running into vaporizer intracavitary enters the pressure before check valve less than liquid,
Check valve is opened, and liquid flows into vaporization chamber under the action of pressure difference.Liquified natural gas absorbs heat in vaporization chamber and makes the pressure of intracavitary
Power raises.It is slightly higher for the pressure in vaporization chamber under normal conditions when the pressure rise of intracavitary is to the state for meeting closed check valve
Enter the pressure of check valve in liquified natural gas, check valve is closed, and prevents liquid from continuing to flow into.From the point of view of the above process, remove
Non- closed check valve pressure is higher than 80BAR, vaporizes the enough heats of vaporization of indoor material absorbing, the second throttle orifice is enough as low as
Close to closed mode, after being gasified totally, gas is just excluded outside vaporizer, can just make the invention pressure to be maintained at 80 to
The state of 90bar.Otherwise technically it is very difficult to what is realized.General check valve, is closed in low-down pressure differential range
Close check valve, close check valve and can prevent to vaporize indoor pressure and continue to raise, be in the case of normal work, vaporization chamber
Interior pressure rise to 80bar above is it is difficult to.
2nd, in the invention, for vaporizer as in vacuum environment, external heat is difficult to reach vaporization chamber outer wall.From total
Apparently, only and its micro thermal energy is delivered to vaporization chamber outer wall, this heat is far smaller than liquefied natural gas and is gasified totally institute
The heat of vaporization needed, is insufficient to allow subcooled liquid to become gaseous state completely, this that is, in the case of normal work,
Enough heats of vaporization can be just drawn onto by vaporizing the indoor material demand long period.Only absorbing enough heats of vaporization by vaporizer makes
It is very low to vaporize the indoor efficiency being gasified totally.
3rd, in the invention, vaporize indoor second throttle orifice and be always on, in the case of normal work, which goes out
There are certain pressure difference in mouth and vaporization chamber.Under under the action of this pressure difference, indoor material, either gaseous state, or liquid are vaporized
State, or gas-liquid mixed state, simply by the presence of pressure difference, can all spill out by the second throttle orifice.When check valve is opened, vaporization chamber
The material of interior inflow is typically more than the material of outflow, vaporization chamber pressure rise when vaporizing of absorbing heat in vaporization chamber.Check valve disconnects
When, the material that flows into vaporization chamber is less than the material of outflow, and the material in vaporization chamber continues to absorb heat and continue to reduce, and pressure is lasting
Reduce.When the pressure in vaporization chamber is reduced to check valve unlocking condition, check valve is opened, and back flows back into liquid, is repeated above-mentioned
Process, work in cycles.The condition that check valve opens and closes, is determined by the mechanical performance of check valve in itself.
From the point of view of the real work principle of the invention device, even if vaporizing indoor operating pressure reaches 80bar, its internal pressure also can
Because the second throttle orifice flows out medium all the time and causes pressure to reduce.In general, liquefied natural gas main pipeline pressure is 2 to 3bar,
Sample reaches pressure at chamber input and is also very close to this numerical value.To be worked normally using the device of the invention, vaporizer
Pressure will necessarily be reduced in a certain period of time below main pipeline pressure, namely 2 to below 3bar.Therefore even if invention institute
In the presence of being vaporized under the supercriticality stated, 80 to 3bar range section will necessarily be operated in by vaporizing indoor pressure.
In this range section, refering to natural gas temperature and pressure dependence figure (see Fig. 1), at a temperature of -130 DEG C, the pressure of about 30bar
It is put into transformation of the gas phase to liquid phase.In other words, even if the device has been accomplished to completely vaporize under overcritical as described in document,
Steam after vaporization, also can again liquefy because vaporizer pressure is down in liquid range (about in 30bar) and form liquid point
Son, so as to cause fractionation situation to occur.
4th, in the invention, after gas outflow vaporizer, before the gasifying heater of heating is reached, this pressure makes to be in all the time
In low-pressure state, the material during this section, any moment can not all meet the 80Bar of the supercriticality described in document
High pressure requirement, so this section of medium is necessarily in the operating mode of gas-liquid common phase, the material in pipe is not absorbed to enough heat also, inevitable
There is the situation of fractionation.There is fractionation just to there is the greatest differences on molecular motion velocities, so that homogeneous gas can not be obtained
Body, sampling quality will be affected.
The content of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of more boiling point mixed liquor samplers and method, the dress
Put and method can guarantee that more boiling point mixed liquors, such as liquefied natural gas, even if in the case where there is fractionation, can also obtain stable
Homogeneous sample gas.Specifically, its technical solution is as follows：
The device for sampling and gasifying for more boiling point mixed liquors, including for gathering the sampling line and use of the mixed liquor
In the heated type gasifier that more boiling point mixed liquors gasify；
Spray chamber is provided with the sampling line, the entrance of gasifier described in the outlet of the spray chamber, and institute
Cross-sectional area of the cross-sectional area more than the outlet of the entrance and the spray chamber of the spray chamber of the atomization chamber of spray chamber is stated,
When entrance for the spray chamber is more than the spray chamber Opening pressure with the indoor pressure difference of atomization, the mixed liquor spray
Enter the atomization chamber of the spray chamber and absorb heat in the atomization chamber to vaporize.
As the improvement to technical solution, the entrance of the spray chamber is located at the top of the spray chamber；
And/or the entrance of the gasifier is located at the top of the gasifier.
As the improvement to technical solution, the spray chamber and gasifier in the vertical direction parallel arrangement.
As the improvement to technical solution, bypass off-load pipeline, the bypass off-load pipe are provided with the sampling line
Road includes unloading valve and bypass pipe.
As the improvement to technical solution, described device includes the vacuum casting component of closing, for accommodating the sampling
Pipeline, the pipeline in the gasifier, the bypass off-load pipeline；
Described device further includes vacuum generator, for forming vacuum environment in the vacuum casting component.
As the improvement to technical solution, the vacuum casting component is formed by some sections of housing combinations, described in some sections
Shell is connected by metal sealing flange-type connection component respectively between any two, and the metal sealing flange-type connection component includes
Corresponding first metal sealing flange plate and the second metal sealing flange plate, the first metal sealing flange plate and described
The contact site of two metal sealing flange plates is provided with metal o-ring, the first metal sealing flange plate and second gold medal
Belonging to sealing flange on piece and be provided with cutting edge, the cutting edge can cut the metal o-ring, and one in some sections of shells
Part is provided with display or implicit vacuum ripple tubular type expansion joint.
As the improvement to technical solution, the gasifier includes gasifier shell, heater element and is arranged on the gas
Change the spirality pipeline in device shell, the top of the spirality pipeline is the entrance of the gasifier, the gasifier shell
It is interior to be filled with Heat Conduction Material.
As the improvement to technical solution, the inlet of the spray chamber is provided with temperature sensor；
And/or sampling shut-off valve is provided with the sampling line；
And/or it is provided with vaccum stop valve between the vacuum generator and the vacuum casting component.
As the improvement to technical solution, the mixed liquor is liquefied natural gas.
The method for sampling and gasifying for more boiling point mixed liquors, utilizes the device according to any of the above-described technical solution
Gather the mixed liquor, the mixed liquor absorbs heat steam that vaporization produces in gravity and molecular thermalmotion in the spray chamber
Under effect, liquid weight molecule preferentially flows out spray chamber, flows into the gasifier, and the heat absorption gas completely in the gasifier as early as possible
Change, and molecule is further sufficiently mixed under Brownian movement effect, so as to obtain homogeneous stabilization in the gasifier exit
Sample gas.
The present invention at least has the advantages that：
(1) spray chamber and gasifier composition two-stage gasification system, after mixed liquor vaporizes in spray chamber, even if there is fractionation
Phenomenon, but due to the heat effect of gasifier so that molecule is further sufficiently mixed, so that in gas under Brownian movement effect
Change the sample gas that device outlet obtains homogeneous stabilization, improve sampling quality.
(2) by making the entrance of spray chamber be located at the top of spray chamber, the vaporific weight molecule of liquid of spray chamber bottom is sunk to
Spray chamber can be flowed out prior to gaseous light molecule, rapidly enter further heat absorption vaporization in gasifier.In spray chamber spray chamber sheet
Before the moment that body is again turned on, it has been entirely gas molecule state to be atomized indoor molecule, is so ensured that in spray chamber
The gas molecule that has entirely been gasified totally of medium.
(3) by making the entrance of gasifier be located at the top of gasifier, gravity can be relied on, it is preferential to ensure that liquid is big
The flow velocity of molecule, reduces the time difference that light molecule and weight molecule reach gasifier so that gasifier exit can obtain evener
The sample gas that matter is stablized.
(4) sampling line, gasifier etc. are all placed in vacuum environment, and tight using metal sealing flange and metal o-ring
Lattice seal, can effectively prevent external environment condition and sampling line, the temperature difference of gasifier avoid sampling line produce dew condensation phenomenon with
And thermal insulation.
(5) bypass off-load pipeline is provided with sampling line, pressure can be discharged in time when pressure is excessive in sampling line
Power.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is liquefied natural gas state transition graph；
Fig. 2 is the generally longitudinally profile of sampler in the prior art；
Fig. 3 is the part sectioned view of sampler in the prior art；
Fig. 4 is the three-dimensional profile figure for being used for the sampling of more boiling point mixed liquors and the device to gasify in the embodiment of the present invention；
Fig. 5 is the first overall profile for being used for the sampling of more boiling point mixed liquors and the device to gasify in the embodiment of the present invention；
Fig. 6 is the second overall profile for being used for the sampling of more boiling point mixed liquors and the device to gasify in the embodiment of the present invention；
Fig. 7 is the profile of gasifier and atomization chamber region in the embodiment of the present invention；
Fig. 8 is the profile in metal sealing flange-type connection component region in the embodiment of the present invention；
Fig. 9 is the profile of spray chamber in the embodiment of the present invention.
Main element symbol description：
1- samples pipe shell, the main flanges of 2-, 3- probe tube manual shutoff valve shells, 4- expansion joints, 5- metal sealing flanges
Type connection component, 6- probe tube automatic cut-off valve shells, 7- top assembly flanges, 8- gasifier shells, 9- atomization chamber enclosures,
10- heater elements, 11- control cabinets, 12- vacuum generators, 13- pressure vacuum gauges, 14- vaccum stop valves, outside 15- transverse direction vacuum
Package, 101- probe tubes, 102- probe tube hand stop valves, 104- bypass pipes, 105- probe tube automatic stop valves, 106- off-loads
Valve, 107- vapor lamps, 108- spray chambers, 1081- spray chamber bodies, 1082- reset assemblies, 1083- control valves, 109- temperature pass
Sensor mounting assembly, 110- gasifiers are into pipe carrier, 111- Special reducing pipes, 112- gasifier inner casings, 113- gasifiers and mist
Change the shell between room, 202- cylinders, 203- temperature sensors, 51- the first metal sealing flange plates, the second metal sealings of 52-
Flange plate, 53- metal o-rings.
Embodiment
Hereinafter, various embodiments of the present invention will be described more fully.The present invention can have various embodiments, and
It can adjust and change wherein.It should be understood, however, that：There is no various embodiments of the present invention are limited to spy disclosed herein
Determine the intention of embodiment, but should invention is construed as covering falling into the spirit and scope of various embodiments of the present invention
All adjustment, equivalent and/or alternatives.
Hereinafter, disclosed in the term " comprising " that can be used in various embodiments of the present invention or " may include " instruction
Function, operation or the presence of element, and do not limit the increase of one or more functions, operation or element.In addition, such as exist
Used in various embodiments of the present invention, term " comprising ", " having " and its cognate are meant only to represent special characteristic, number
Word, step, operation, the combination of element, component or foregoing item, and be understood not to exclude first one or more other
Feature, numeral, step, operation, element, component or foregoing item combination presence or one or more features of increase, numeral,
Step, operation, element, component or foregoing item combination possibility.
In various embodiments of the present invention, stating "or" or " at least one in A or/and B " includes what is listed file names with
Any combinations of word or all combinations.For example, " A or B " or " at least one in A or/and B " may include A, may include for statement
B may include A and B both.
The statement (" first ", " second " etc.) used in various embodiments of the present invention can be modified in various implementations
Various constituent element in example, but respective sets can not be limited into element.For example, presented above be not intended to limit the suitable of the element
Sequence and/or importance.The purpose presented above for being only used for differentiating an element and other elements.For example, the first user fills
Put and indicate different user device with second user device, although the two is all user apparatus.For example, each of the present invention is not being departed from
In the case of the scope of kind embodiment, the first element is referred to alternatively as the second element, and similarly, the second element is also referred to as first
Element.
It should be noted that：In the present invention, unless otherwise clear and definite regulation and definition, the art such as " installation ", " connection ", " fixation "
Language should be interpreted broadly, for example, it may be being fixedly connected, can also be detachably connected or be integrally connected；It can be machine
Tool is connected or is electrically connected；Can be directly connected to, and can be indirectly connected by intermediary；It can be two
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
In the present invention, those of ordinary skill in the art are it is to be appreciated that indicating position or position relationship in text
Term be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
The term used in various embodiments of the present invention is only used for the purpose of description specific embodiment and not anticipates
In limitation various embodiments of the present invention.As used herein, singulative is intended to also include plural form, unless context is clear
Chu it is indicated otherwise.Unless otherwise defined, otherwise all terms (including technical term and scientific terminology) used herein have
There is the implication identical with the normally understood implication of various embodiments of the present invention one skilled in the art.The term
(term such as limited in the dictionary generally used) is to be interpreted as having and situational meaning in the related technical field
Identical implication and the implication of Utopian implication or overly formal will be interpreted as having, unless in the various of the present invention
It is clearly defined in embodiment.
Embodiment 1
This example provides a kind of more boiling point mixed liquor samplers, which can guarantee that more boiling point mixed liquors, such as liquefies
Natural gas, even if in the case where there is fractionation, can also obtain stable homogeneous sample gas.
As shown in figure 4, the device for sampling and gasifying for more boiling point mixed liquors, including for gathering the probe tube of mixed liquor
Road and the heated type gasifier for more boiling point mixed liquors to be gasified.Specifically, as shown in figure 5, the sampling line includes insertion
Mixed liquor by subsequent pipeline is transported to gasifier by the probe tube 101 in subcooled liquid, probe tube 101 after gathering mixed liquor.
Preferably, the outside of probe tube 101 is provided with sampling pipe shell 1, and sampling pipe shell 1 is installed to by main flange 2
On main pipeline.Preferably, the mode of heating of gasifier is electrothermal.
In the present embodiment, spray chamber 108 is provided with sampling line, the outlet gasifier of spray chamber 108 enters
Mouthful, and the cross-sectional area of the atomization chamber of spray chamber 108 is more than the transversal of the outlet of the entrance and spray chamber 108 of spray chamber 108
Area.In this way, when the entrance of spray chamber 108 is more than 108 Opening pressure of spray chamber with the pressure difference in spray chamber 108, mixed liquor
Spray into the atomization chamber of spray chamber 108 and absorb heat in atomization chamber and vaporize.Mixed liquor, may be by complete gas after spray chamber 108
Change, it is also possible to which gas-liquid mixture phase, such as contains the vaporific molecule of a large amount of liquid.Mixed liquor absorbs heat what vaporization produced in spray chamber
For steam under the action of many kinds of force such as gravity and molecular thermalmotion, liquid weight molecule preferentially flows out spray chamber, flows into gasification as early as possible
Device, and in gasifier complete endothermic gasification and cause molecule Brownian movement effect under, molecule is further sufficiently mixed so that
The sample gas of homogeneous stabilization is obtained in gasifier exit.
Preferably, the entrance of spray chamber 108 is located at the top of spray chamber 108, i.e. spray chamber 108 is inversion type.Supercooled liquid
For body when entering spray chamber 108, the heat that can be drawn onto is typically seldom, is not enough to will go into the liquid in spray chamber 108
Body becomes gaseous state completely, and fractionation phenomenon inevitably occurs.Medium in spray chamber 108 is removed in spray chamber 108 again
The moment of secondary opening is outside gas, most periods is usually gas-liquid mixed state, namely contain the gas being gasified totally
State small molecule and the liquid macromolecular not being gasified totally.In general, under equal operating mode, low-boiling material first absorbs heat gas
Change, vaporized after high boiling material.According to molecular characterization, low-boiling point material is generally small molecule, and higher boiling molecule is general
For macromolecular.From molecular motion, small molecule movement velocity is fast, and macromolecular movement velocity is slow, liquid macromolecular movement speed
Degree is slower.Also, liquid macromolecular locomitivity is larger by the function influence of gravity.
In general, the vaporific macromolecular of liquid is under the effect of gravity, 108 bottom of spray chamber can be dropped down onto down.If spray chamber
108 mounting means taken other form, such as upward, except non-liquid macromolecular is being drawn onto enough heat, is gasified totally, is otherwise
Spray chamber 108 cannot all be flowed directly out.Liquid molecule heat absorption is a progressive process, needs the time.Particularly
When spray chamber 108 is placed in vacuum environment, to be drawn onto enough heat makes it be gasified totally, it is necessary to expend the very long time.
During it absorbs heat, gaseous molecular, the light molecule particularly to have gasified, has risen outflow spray chamber 108.Therefore use atomization
The mode that 108 entrance of room is located at lower part inevitably occurs that light molecule first flows out, and the phenomenon flowed out after weight molecule occurs.Add
The upper weight molecule speed of service is slow, and the light molecule speed of service is fast.This normally result in molecular chaperones in pipeline and actual constituent it
Between deviation increase.And the spray chamber 108 of inversion type is used, such harmful effect can be improved just.Gaseous light molecule, in gas
During liquid mixed state, the top of spray chamber 108 is usually risen to；The vaporific molecule of liquid, under gravity, accelerates, sinks to atomization
108 bottom of room.Because the cross-sectional area of the atomization chamber of spray chamber 108 is more than the cross-sectional area of the outlet of spray chamber 108, it exports phase
When the vaporific weight molecule of liquid in throttle orifice, sinking to 108 bottom of spray chamber can flow out spray chamber 108 prior to gaseous light molecule,
Rapidly enter further heat absorption vaporization in gasifier.Before the moment that spray chamber 108 is again turned on, the molecule in spray chamber 108
It has been entirely gas molecule state, has so ensured that the medium of spray chamber 108 is completely vaporized without remaining any liquid, from
And spray chamber is ensure that before each open, the gas molecule that the medium in spray chamber 108 has entirely been gasified totally.
Spray chamber 108 using the Another reason that also has of inversion type structure is examined based on molecular motion and Thermodynamics
Consider.It is preferential to ensure the outflow of liquid weight molecule, it is because the weight molecule speed of service is more many slowly than the light molecule speed of service, allows vaporific
Weight molecule flows out spray chamber 108 prior to light molecule, is placed on front end, light molecule is placed in rear end, can allow follow-up outflow mist
The probability of the vaporific weight molecule of liquid is hit in the light molecule increase for changing room 108, so as to accelerate the flow velocity of liquid molecule, reduces liquid weight
Molecule and light molecule reach the time difference of gasifier, the vaporific molecule of liquid and gaseous molecular is obtained more in gasifier
Sufficiently mixing, to obtain gas as homogeneous as possible.
There is one the reason is that the vaporific molecule of liquid without vaporization using inversion type spray chamber 108, it is also necessary to absorb big
The heat of amount could finally be gasified totally.Allow it prior to flowing out spray chamber 108 the vaporific molecule of liquid can be allowed to reach gasification as early as possible
Device, and complete endothermic gasification as early as possible.The heat that spray chamber 108 under usual such a structure can be absorbed from environment is very
Few.The vaporific weight molecule of liquid, which is gasified totally, needs substantial amounts of heat, is very slow if be gasified totally in spray chamber 108.
Allow it to flow to gasifier as early as possible, heated with electric heater, enough heats can be obtained rapidly, using the side of this inversion type
Formula, can reach and put forward efficient purpose.
It is spray chamber 108 is in ultralow temperature all the time as far as possible to also have a major reason using inversion type spray chamber 108
Working status, so as to ensure that subcooled liquid is always deeply undercooling state, so as to ensure that sample exists before spray chamber 108 is flowed into
Flow into before spray chamber 108 without fractionation phenomenon.In the case of using the spray chamber 108 of non-inverted formula, the mixing in spray chamber 108
Liquid will be inevitably fractionated, first in the state of cryogenic high pressure, by the first vapour such as low-boiling component, such as nitrogen, methane
Change and flow out spray chamber.Remaining is the molecule of higher, such as ethane, propane.And these remaining components, boiling point
Higher, corresponding evaporation conditions must be increased to by being atomized indoor temperature, could thoroughly be discharged it in outside spray chamber 108.
Temperature raises in spray chamber 108, to ensureing that 101 supercooled state of probe tube is very unfavorable, because the rise of temperature is easily led
Liquid to be sampled is caused fractionation phenomenon occur.Using the spray chamber 108 of inversion type, higher boiling component first flows out spray chamber 108, most
After remain low boiling point component so that being constantly in low boiling point component vapor state in spray chamber 108.It can so ensure to be atomized
Temperature in room 108, remains at below the evaporation conditions of low-boiling point liquid, temperature, pressure such as vaporizations such as nitrogen, methane
Under the conditions of, thus achieve the purpose that the spray chamber 108 is in lower temperature state all the time, so as to be easier to ensure supercooling
Liquid is not fractionated all the time before spray chamber 108 is entered, so as to ensure sampling quality.
Fig. 4, Fig. 5 and Fig. 9 show a kind of preferable spray chamber 108, and spray chamber 108 is arranged in atomization chamber enclosure 9.Mist
Changing room 108 includes spray chamber body 1081, control valve 1083 and reset assembly 1082, the top of spray chamber body 1081 be into
Mouthful, its entrance be shoulder hole structure, the cross-sectional area of the cross-sectional area in the upper level hole in stepped hole more than next stage hole.Atomization
The main body of the atomization chamber of room body 1081 is cylindrical cavities, and the upper and lower ends of the cylindrical cavities are round and smooth curved surface, are designed to justify
Sliding curved surface, it is ensured that without any lipid residue inside it.The bottom of spray chamber body 1081 is outlet, its outlet is rank
Terraced pore structure, the cross-sectional area in the upper level hole in stepped hole are less than the cross-sectional area in next stage hole.Preferably, control valve 1083
For round bead shape structure, it is preferable that reset assembly 1082 is spring.
Preferably, which further includes temperature sensor 203.Temperature sensor 203 passes through temperature sensor mounting assembly
109 are arranged on the inlet of spray chamber 108, for detecting 108 inlet temperature of spray chamber.Temperature sensor mounting assembly 109 is adopted
Made of the good material of heat-conductive characteristic：Such as copper, it may be necessary to made of other materials such as stainless steels, temperature sensing
Device mounting assembly 109 plays a part of to clamp at the same time, fixes probe tube 101.
Preferably, the entrance of gasifier is located at the top of gasifier.Fig. 5 shows a kind of preferable gasifier, including gas
Change device shell 8, gasifier inner casing 112, heater element 10 and the spiral shape vapor lamp 107 being arranged in gasifier inner casing 112, gas
The top for changing pipe 107 is the entrance of gasifier, and Heat Conduction Material is filled with gasifier shell 8 and gasifier inner casing 112.It is preferred that
Ground, Heat Conduction Material are pulverulent material (such as copper powder), or using process filling gaps such as welding, cast, it is expected to reach good
Good heat transfer and gasification result.
Preferably, as shown in fig. 7, spray chamber 108 and gasifier in the vertical direction parallel arrangement.By make the two
It is arranged in parallel on vertical direction, gravity can be made full use of, obtains optimal gasification result.
It should be strongly noted that it is only a kind of preferable mode that spray chamber 108 and gasifier, which are vertically arranged, such as installation
Occasion is limited, and in addition to being vertically arranged, spray chamber 108 and gasifier can also be obliquely installed.
Preferably, as shown in figure 5, being provided with bypass off-load pipeline in sampling line, bypass off-load pipeline includes unloading valve
106 and bypass pipe 104.When there is the situation of hypertonia, unloading valve 106 is opened, into high voltage protective state, excess pressure
Liquid flowed out by bypass pipe 104.
Preferably, the device include closing vacuum casting component, for accommodate the pipeline in sampling line, gasifier,
Off-load pipeline etc. is bypassed, which further includes vacuum generator 12, for forming vacuum environment in vacuum casting component.Pass through
Vacuum environment is formed in vacuum casting component, can be to avoid the gasification of ambient temperature effect mixed liquor.For example, avoid probe tube
Subcooled liquid and heat exchange with outside in road, and then avoid probe tube from producing dew condensation phenomenon, and avoid the heat of heater element 10
Amount is diffused into the external world, improves the thermal efficiency.
Preferably, vacuum casting component is formed by some sections of housing combinations, for example, sampling pipe shell 1, atomization chamber enclosure 9,
Gasifier shell 8 etc., some sections of shells are connected by metal sealing flange-type connection component 5 respectively between any two.Such as Fig. 8 institutes
Show, metal sealing flange-type connection component 5 includes corresponding first metal sealing flange plate 51 and the second metal sealing flange
The contact site of piece 52, the first metal sealing flange plate 51 and the second metal sealing flange plate 52 is provided with metal o-ring 53.
Cutting edge is provided with first metal sealing flange plate 51 and the second metal sealing flange plate 52, cutting edge can cut metal o-ring
53, the part in some sections of shells is provided with the expansion joint 4 of display or implicit vacuum ripple tubular type.
When first metal sealing flange plate 51 and the second metal sealing flange plate 52 compress, cutting edge incision metal o-ring 53
It is interior, realize the process reliably sealed.Using the sampling probe of the structure, the vacuum in vacuum chamber can be not only improved, may be used also
To break through the limitation of the heatproof of plastic cement sealing ring, vacuum probe is set to work long hours in high temperature, low temperature environment.In addition, adopt
With the connector of this structure, also acted on antidetonation etc., it can be ensured that sampling probe, which is operated in, to be vibrated in strong environment.Display
Or the expansion joint 4 of implicit vacuum ripple tubular type can correct installation deviation, the reliability and service life of bonding in vacuum are improved.
The structure of expansion joint 4 includes but not limited to structure shown in the drawings.In addition to this it is possible to increase by one according to actual installation condition
A little vacuum casting components, such as vacuum elbow.
Preferably, sampling shut-off valve is provided with sampling line.Specifically, sampling shut-off valve includes probe tube manual shutoff
Valve 102 and probe tube automatic stop valve 105.Probe tube manual shutoff valve shell is provided with outside probe tube hand stop valve 102
3, probe tube automatic cut-off valve shell 6,3 He of probe tube manual shutoff valve shell are provided with outside probe tube automatic stop valve 105
Probe tube automatic cut-off valve shell 6 is enclosed construction, for making probe tube hand stop valve 102 and probe tube automatic stop valve
105 are in vacuum state.Preferably, as shown in fig. 6, probe tube automatic stop valve 105 is opened and closed under the promotion of cylinder 202
Close.
Thus, such as probe tube 101, probe tube hand stop valve 102, pipe fitting, probe tube automatic stop valve 105, atomization
The grade of room 108 is all placed in the environment of vacuum.What vacuum environment ensured the heat bottom line of environment reaches sampling sample, so that
Prevent sampling from treating that liquid occurs because absorbing excessive heat, so as to ensure that sample sample was in all the time before spray chamber is entered
Cold state.
Preferably, vaccum stop valve 14 and pressure vacuum gauge are provided between vacuum generator 12 and vacuum casting component
13, vaccum stop valve 14 is used to cut off the connected state between vacuum generator 12 and vacuum casting component, pressure vacuum gauge 13
For monitoring the pressure in vacuum casting component.
Preferably, vacuum casting component includes a horizontal vacuum casting pipe 15, vacuum generator 12,13 and of pressure vacuum gauge
Vaccum stop valve 14 is installed at the horizontal vacuum casting 15 at the top of the device.It is above-mentioned when installing outdoors using this structure
Structure can be easily placed in outdoor case, improve waterproofing grade.
Preferably, perforate on gasifier shell 8, vapor lamp 107 are drawn from gasifier inner casing 112 by the hole.Gasification
There is the shell 113 between a gasifier and spray chamber between device shell 8 and atomization chamber enclosure 9, between gasifier and spray chamber
The inside of shell 113 installation vapor lamp 107.Thus, vapor lamp 107 can all be placed in vacuum environment, can prevent the pipe from absorbing heat
And produce dew condensation phenomenon.
Preferably, vacuum casting component includes a Special reducing pipe 111, probe tube 101, spray chamber 108, temperature sensor
The grade of mounting assembly 109 component is located in Special reducing pipe 111.By using above-mentioned Special reducing pipe 111, it is possible to reduce outside vacuum
The overall dimensions of shell, optimize structure.
Preferably, there is a gasifier on gasifier inner casing 112 into pipe carrier 110, can be by probe tube 101, spray chamber
108th, temperature sensor mounting assembly 109 is held, and prevents that its is sagging.
Preferably, which further includes top assembly flange 7, for the upper element of the device to be all placed in outdoor type
In metal box, top assembly flange 7 is connected with metal box bottom, and fixed.
Preferably, the top of the device is provided with control cabinet 11, is provided with control cabinet 11 for controlling heater element 10
Controller and power unit.
Present embodiment additionally provides the method for sampling and gasifying for more boiling point mixed liquors, is disclosed using present embodiment
Device collection mixed liquor, mixed liquor absorb heat in spray chamber 108 vaporization generation steam in gravity and the work of molecular thermalmotion
Under, liquid weight molecule preferentially flows out spray chamber 108, flows into gasifier, and the complete endothermic gasification in gasifier as early as possible, and make
Obtain molecule to be further sufficiently mixed under Brownian movement effect, so as to obtain the sample gas of homogeneous stabilization in gasifier exit.
It will be appreciated by those skilled in the art that attached drawing is a schematic diagram for being preferable to carry out scene, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
The invention described above sequence number is for illustration only, does not represent the quality of implement scene.
Disclosed above is only several specific implementation scenes of the present invention, and still, the present invention is not limited to this, Ren Heben
What the technical staff in field can think change should all fall into protection scope of the present invention.
Claims (10)
1. the device for sampling and gasifying for more boiling point mixed liquors, it is characterised in that including for gathering taking for the mixed liquor
Sample pipeline and the heated type gasifier for more boiling point mixed liquors to be gasified；
Spray chamber is provided with the sampling line, the entrance of gasifier described in the outlet of the spray chamber, and the mist
Change the cross-sectional area of the atomization chamber of room more than the cross-sectional area of the outlet of the entrance and the spray chamber of the spray chamber, be used for
When the entrance of the spray chamber is more than the spray chamber Opening pressure with the indoor pressure difference of atomization, the mixed liquor sprays into institute
State the atomization chamber of spray chamber and absorb heat in the atomization chamber and vaporize.
2. device according to claim 1, it is characterised in that the entrance of the spray chamber is located at the top of the spray chamber
Portion；
And/or the entrance of the gasifier is located at the top of the gasifier.
3. the apparatus of claim 2, it is characterised in that the spray chamber and the gasifier in the vertical direction are put down
Row arrangement.
4. device according to claim 3, it is characterised in that bypass off-load pipeline, institute are provided with the sampling line
Stating bypass off-load pipeline includes unloading valve and bypass pipe.
5. according to the device any one of claim 1-4, it is characterised in that described device includes the vacuum casting of closing
Component, for accommodating the pipeline in the sampling line, the gasifier, the bypass off-load pipeline；
Described device further includes vacuum generator, for forming vacuum environment in the vacuum casting component.
6. device according to claim 5, it is characterised in that the vacuum casting component by some sections of housing combinations and
Into some sections of shells are connected by metal sealing flange-type connection component respectively between any two, the metal sealing flange
Type connection component includes corresponding first metal sealing flange plate and the second metal sealing flange plate, first metal sealing
The contact site of flange plate and the second metal sealing flange plate is provided with metal o-ring, the first metal sealing flange
Cutting edge is provided with piece and the second metal sealing flange plate, the cutting edge can cut the metal o-ring, Ruo Ganduan
A part in the shell is provided with display or implicit vacuum ripple tubular type expansion joint.
7. device according to claim 6, it is characterised in that the gasifier include gasifier shell, heater element and
The spiral shape vapor lamp being arranged in the gasifier shell, the top of the vapor lamp is the entrance of the gasifier, described
Heat Conduction Material is filled with gasifier shell.
8. device according to claim 7, it is characterised in that the inlet of the spray chamber is provided with temperature sensor；
And/or sampling shut-off valve is provided with the sampling line；
And/or it is provided with vaccum stop valve between the vacuum generator and the vacuum casting component.
9. device according to claim 1, it is characterised in that the mixed liquor is liquefied natural gas, liquefied petroleum air-liquid
Change coal gas.
10. the method for sampling and gasifying for more boiling point mixed liquors, it is characterised in that using according to any in claim 1-9
Device described in gathers the mixed liquor, the mixed liquor absorb heat in the spray chamber vaporization generation steam in gravity and
Under the action of molecular thermalmotion, liquid weight molecule preferentially flows out spray chamber, flows into the gasifier as early as possible, and in the gasifier
Interior complete endothermic gasification, and molecule is further sufficiently mixed under Brownian movement effect, so that in the gasifier exit
Obtain the sample gas of homogeneous stabilization.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610877609 | 2016-10-09 | ||
| CN2016108776096 | 2016-10-09 |
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| CN107917822A true CN107917822A (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710184305.6A Pending CN107917822A (en) | 2016-10-09 | 2017-03-24 | The device and method for sampling and gasifying for more boiling point mixed liquors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108548693A (en) * | 2018-06-28 | 2018-09-18 | 山东晟原石化科技有限公司 | Vacuum is from cold insulation sampler |
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