CN103874898A - Low temperature gas supply device, heat transfer medium-cooling device, and low temperature reaction control device - Google Patents
Low temperature gas supply device, heat transfer medium-cooling device, and low temperature reaction control device Download PDFInfo
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- CN103874898A CN103874898A CN201280048779.3A CN201280048779A CN103874898A CN 103874898 A CN103874898 A CN 103874898A CN 201280048779 A CN201280048779 A CN 201280048779A CN 103874898 A CN103874898 A CN 103874898A
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- 238000001816 cooling Methods 0.000 title claims description 67
- 238000006243 chemical reaction Methods 0.000 title claims description 63
- 230000008676 import Effects 0.000 claims description 53
- 230000008520 organization Effects 0.000 claims description 41
- 239000003595 mist Substances 0.000 claims description 31
- 238000007599 discharging Methods 0.000 claims description 12
- 239000000376 reactant Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 abstract description 21
- 239000002826 coolant Substances 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 482
- 229910052757 nitrogen Inorganic materials 0.000 description 241
- 239000007789 gas Substances 0.000 description 229
- 239000007788 liquid Substances 0.000 description 105
- 238000007710 freezing Methods 0.000 description 26
- 230000008014 freezing Effects 0.000 description 26
- 230000001105 regulatory effect Effects 0.000 description 24
- 230000004087 circulation Effects 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- 230000001276 controlling effect Effects 0.000 description 12
- 238000002309 gasification Methods 0.000 description 9
- 230000006641 stabilisation Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000541 pulsatile effect Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- ILEDWLMCKZNDJK-UHFFFAOYSA-N esculetin Chemical compound C1=CC(=O)OC2=C1C=C(O)C(O)=C2 ILEDWLMCKZNDJK-UHFFFAOYSA-N 0.000 description 1
- 125000001153 fluoro group Chemical class F* 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
- F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
This low temperature gas supply device is provided with: a first heat exchanger; a mixing means; and a first control means. The first heat exchanger discharges a mixed gas as a low temperature gas coolant and discharges a low temperature-liquefied gas as a vaporized gas by introducing said low temperature-liquefied gas and the mixed gas, which is the vaporized gas of the low temperature-liquefied gas mixed with a gas of a temperature higher than the low temperature-liquefied gas, and causing same to exchange heat with each other. The mixing means mixes the gas with the vaporized gas discharged from the first heat exchanger and discharges same as a mixed gas. Based on the difference between the temperature detected for the low temperature gas coolant and the intended temperature, the first control means adjusts the respective amounts of the gas and the vaporized gas introduced into the mixing means and regulates the temperature of the low temperature gas coolant to the intended temperature.
Description
Technical field
The present invention relates to a kind of cryogenic gas feedway, thermophore cooling device and low-temp reaction control device.
The Patent that the application proposed in Japan based on October 11st, 2011 requires priority No. 2011-223716, and here cites its content.
Background technology
In the chemical reaction process such as organic synthesis and crystallization, require the high temperature control of precision under low-temperature space.Therefore, shown in patent documentation, sometimes use low-temperature reactor as described later.In described low-temperature reactor, use the double-deck container that has the independently groove (sleeve pipe) that can make thermophore circulation in the arranged outside of reactive tank, be controlled as the thermophore of low temperature to this cannula portion supplying temperature, thereby by cooling the reactant liquor of the reactive tank inside temperature that is adjusted into regulation.
The thermophore of supplying with to reactive tank, in heat exchanger, carry out heat exchange with the liquefied gas at low temp (as liquid nitrogen) of the temperature lower than the freezing point of heat carrier etc., thereby to be cooled to after the mode controlled temperature below the temperature of regulation, be fed in the sleeve pipe of reactive tank.
In this cooling device, need to prevent freezing of thermophore in heat exchanger.That is, this is because when the thermophore in heat exchanger freezes, understands inaccessible runner, therefore has the thermophore situation about cannot carry out that circulates.In addition, in the time that because thermophore freezes, runner is inaccessible, it is large that the pressure loss of heat exchanger becomes, thereby need the pump of technical requirement harshness at design aspect, and increase the heat intrusion of pump, therefore increases the cooling use amount with liquefied gas at low temp.
In the past, for the carrying out that prevents that thermophore from freezing, the chilling temperature of heat carrier must be set as to enough temperature higher than thermophore freezing point., cannot give full play to the low-temperature characteristics that thermophore should have.
Several technology for avoiding thermophore described above to freeze are disclosed.For example, patent documentation 1 is realized by arranging according to the thermophore of the heat exchanger mechanism that the differential pressure of thermophore of oral area or the boil-off gas temperature of the liquefied gas at low temp export department of heat exchanger block the supply of cryogenic gas of coming in and going out.In addition, patent documentation 2 is realized to control liquefied gas at low temp quantity delivered by the temperature that detects heat exchanger heat transfer face.
According to disclosed technology in above-mentioned patent documentation, although can prevent the carrying out that the thermophore of the heat exchanger inside causing because of the too much supply of liquefied gas at low temp solidifies, can produce solidifying of thermophore that degree is not light.
On the other hand, the method of solidifying as the thermophore that further positively suppresses heat exchanger inside, can consider the method for the temperature of adjusting the liquefied gas at low temp of supplying with to heat exchanger, the method for specifically liquefied gas at low temp being supplied with to heat exchanger under the state heating up.
Be by liquefied gas at low temp and the method for the gas at normal temperature of for example one species of gas that temperature is high in contrast mixing in the method that liquefied gas at low temp is heated up.But, when using when simple blender, there is the problem that produces the unstable and pulsation of temperature in mixed cryogenic gas.For example, because the temperature difference between liquid nitrogen and normal temperature nitrogen is larger, and liquid nitrogen has larger low-temperature heat quantity with less flow, therefore have and be difficult to control tiny flow quantity, and produce because of the pulsation of the flow of mixed low temperature nitrogen or mix the unsettled problem of the bad temperature causing.In order addressing the above problem, to need for example good or larger blender of disclosed efficiency in patent documentation 3, and cause that the cost of equipment improves.
Patent documentation 1: Unexamined Patent 11-037623 communique
Patent documentation 2: JP 2009-287822 communique
Patent documentation 3: Unexamined Patent 09-287883 communique
Summary of the invention
The present invention proposes in view of the above problems, a kind of cryogenic gas feedway is provided, thermophore cooling device and low-temp reaction control device, described cryogenic gas feedway can be supplied with the cryogenic gas cold-producing medium of being controlled exactly and stably, described thermophore cooling device imports this cryogenic gas cold-producing medium, and can discharge by and this cryogenic gas cold-producing medium between heat exchange, controlled exactly and stably and noncondensing thermophore, described low-temp reaction control device can utilize this thermophore, under the humidity province of wide region, realize stable control.
The present invention, in order to address the above problem, adopts following technical scheme.
(1) a cryogenic gas feedway, possesses:
First Heat Exchanger, be mixed with mist and the described liquefied gas at low temp of the gasifying gas after gasifying liquefied gas at low temp and the gas that temperature is high compared with described liquefied gas at low temp by importing, and make described mist and described liquefied gas at low temp carry out each other heat exchange, thereby discharge described mist as cryogenic gas cold-producing medium, and described liquefied gas at low temp is discharged as described gasifying gas;
Mixed organization, the described gasifying gas that mixes described gas and discharge from described First Heat Exchanger, and discharge as described mist; With
The first controlling organization, difference between the temperature based on described cryogenic gas cold-producing medium is detected and the target temperature of described cryogenic gas cold-producing medium, adjustment imports to described gas and the described gasifying gas amount separately of described mixed organization, thereby is described target temperature by the temperature control of described cryogenic gas cold-producing medium.
(2) a cryogenic gas feedway, possesses:
First Heat Exchanger, by importing liquefied gas at low temp and the high gas of temperature compared with described liquefied gas at low temp, and make described liquefied gas at low temp and described gas carry out each other heat exchange, thereby discharge as gas after the gasifying gas after described gasifying liquefied gas at low temp and heat exchange respectively, wherein, after described heat exchange, gas is the described gas after heat exchange;
Mixed organization, mixes gas and described gasifying gas from the described heat exchange of described First Heat Exchanger discharge, and discharges as cryogenic gas cold-producing medium; With
The first controlling organization, difference between the temperature based on described cryogenic gas cold-producing medium is detected and the target temperature of described cryogenic gas cold-producing medium, adjust the amount of the gas that temperature is high compared with importing to the described liquefied gas at low temp of described First Heat Exchanger and import to the amount of the described gasifying gas of described mixed organization, thereby being described target temperature by the temperature control of described cryogenic gas cold-producing medium.
(3) the cryogenic gas feedway as described in (1) or (2), described mixed organization is injector.
(4) a thermophore cooling device, possesses:
Cryogenic gas feedway as described in (1) or the cryogenic gas feedway as described in (2);
The second heat exchanger, make the described cryogenic gas cold-producing medium of the described controlled temperature of discharging from described cryogenic gas feedway and circulating path touring thermophore carry out each other heat exchange; With
The second controlling organization, difference between the temperature based on described thermophore is detected and the target temperature of this thermophore, adjustment imports to the amount of the described cryogenic gas cold-producing medium of described the second heat exchanger, thus the target temperature that is described thermophore by the temperature control of described thermophore.
(5) a low-temp reaction control device, possesses:
Thermophore cooling device as described in (4); With
Low-temp reaction groove, is constituted as the described thermophore that imports the described controlled temperature that circulates in described circulating path, thus by cooling the reactant liquor of reactive tank inside be adjusted into temperature required.
(6) a thermophore cooling device, possesses:
First Heat Exchanger, be mixed with mist and the described liquefied gas at low temp of the gasifying gas after gasifying liquefied gas at low temp and the gas that temperature is high compared with described liquefied gas at low temp by importing, and make described mist and described liquefied gas at low temp carry out each other heat exchange, thereby discharge described mist as cryogenic gas cold-producing medium, and described liquefied gas at low temp is discharged as described gasifying gas;
Mixed organization, the described gasifying gas that mixes described gas and discharge from described First Heat Exchanger, and discharge as described mist;
The first controlling organization, difference between the temperature based on described cryogenic gas cold-producing medium is detected and the target temperature of described cryogenic gas cold-producing medium, adjustment imports to the amount of the described gas of described mixed organization, thereby is described target temperature by the temperature control of described cryogenic gas cold-producing medium;
The second heat exchanger, make the described cryogenic gas cold-producing medium of the described controlled temperature of discharging from described First Heat Exchanger and circulating path touring thermophore carry out each other heat exchange; With
The second controlling organization, the difference between the temperature based on described thermophore is detected and the target temperature of this thermophore, adjusts the amount of described gas, thus the target temperature that is described thermophore by the temperature control of described thermophore.
(7) a thermophore cooling device, possesses:
First Heat Exchanger, by importing liquefied gas at low temp and the high gas of temperature compared with described liquefied gas at low temp, and make described liquefied gas at low temp and described gas carry out each other heat exchange, thereby discharge as gas after the gasifying gas after described gasifying liquefied gas at low temp and heat exchange respectively, wherein, after described heat exchange, gas is the described gas after heat exchange;
Mixed organization, mixes gas and described gasifying gas from the described heat exchange of described First Heat Exchanger discharge, and discharges as cryogenic gas cold-producing medium;
The first controlling organization, difference between the temperature based on described cryogenic gas cold-producing medium is detected and the target temperature of described cryogenic gas cold-producing medium, adjustment imports to the amount of the described gasifying gas of described mixed organization, thereby is described target temperature by the temperature control of described cryogenic gas cold-producing medium;
The second heat exchanger, make the described cryogenic gas cold-producing medium of the described controlled temperature of discharging from described First Heat Exchanger and circulating path touring thermophore carry out each other heat exchange; With
The second controlling organization, the difference between the temperature based on described thermophore is detected and the target temperature of this thermophore, adjusts the amount of described gas, thus the target temperature that is described thermophore by the temperature control of described thermophore.
(8) a low-temp reaction control device, possesses:
Thermophore cooling device as described in (6) or the thermophore cooling device as described in (7); With
Low-temp reaction groove, is constituted as the described thermophore that imports the described controlled temperature that circulates in described circulating path, thus by cooling the reactant liquor of reactive tank inside be adjusted into temperature required.
Cryogenic gas feedway of the present invention is due to liquefied gas at low temp and temperature are mixed after minimizing temperature difference higher than the gas of this low-temperature liquid gas temperature, therefore realize uniformly and mixing, and can avoid the particularity of mixed organization, expand the range of choice of mixed organization.In addition, owing to having mixed two kinds of close gases of temperature, the stable temperature control of the cryogenic gas cold-producing medium therefore being undertaken by the flow adjustment of the each gas before mixing.Particularly, by the ripple control of flow of pulsatile change that mixes the bad temperature causing, therefore control and become stable owing to can avoid resulting from.In addition, even if the target temperature of cryogenic gas cold-producing medium changes, also can suitably follow the value of target temperature.On the other hand, the low-temperature heat quantity of liquefied gas at low temp effectively can be used in the generation of cryogenic gas cold-producing medium.
In addition, in the situation that selecting injector as mixed organization, even also easily mix in the case of the pressure of two kinds of close gases of temperature differs from one another.In addition, can make equipment miniaturization compared with using the situation of general blender.
Thermophore cooling device of the present invention is owing to passing through to import to the second heat exchanger the cryogenic gas cold-producing medium of temperature stabilization, thereby be controlled at exactly and stably the temperature of thermophore touring in circulating path, therefore can the target temperature of thermophore of the freezing point of having considered thermophore set betterly., can, in the case of not producing in the second interchanger the freezing of thermophore, the target temperature of thermophore be set as approaching to the freezing point of this thermophore.Thus, can prevent by the pressure loss in the inaccessible of the circulating path that freezes to cause and the path that caused by this obturation, and suppress excessive heat and invade, can Labor-saving as device entirety.
Low-temp reaction control device of the present invention, owing to can using the thermophore that is controlled at exactly and stably the low temperature of the freezing point that approaches thermophore, carries out low temperature control to reactive tank, and therefore the stable control under wide region humidity province becomes possibility.
Brief description of the drawings
Fig. 1 is the system diagram representing as the cryogenic gas feedway that is suitable for the first embodiment of the present invention, thermophore cooling device and low-temp reaction control device.
Fig. 2 is the system diagram representing as the cryogenic gas feedway that is suitable for the second embodiment of the present invention, thermophore cooling device and low-temp reaction control device.
Fig. 3 is the system diagram representing as the cryogenic gas feedway that is suitable for the 3rd embodiment of the present invention, thermophore cooling device and low-temp reaction control device.
Fig. 4 is the system diagram representing as the cryogenic gas feedway that is suitable for the 4th embodiment of the present invention, thermophore cooling device and low-temp reaction control device.
Detailed description of the invention
Adopt accompanying drawing to being elaborated as the cryogenic gas feedway, thermophore cooling device and the low-temp reaction control device that are suitable for the first embodiment of the present invention below.
In addition, the accompanying drawing adopting in the following description for ease of understanding feature, sometimes amplifies and represents characteristic for the purpose of convenience, and the dimension scale of each structural element etc. are not necessarily identical with reality.
(the first embodiment)
First, the structure that is suitable for the first embodiment of the present invention related cryogenic gas feedway 100A, thermophore cooling device 200A and low-temp reaction control device 300A is described.Fig. 1 is the system diagram of the first embodiment of cryogenic gas feedway of the present invention, thermophore cooling device and low-temp reaction control device.
As shown in Figure 1, the related cryogenic gas feedway 100A of the first embodiment of the present invention possesses: normal temperature path 1A, imports the normal temperature nitrogen (GN that is in a ratio of high-temperature gas with liquefied gas at low temp described later from one end
2) NNG; Low temperature path 2A, imports the liquid nitrogen (LN as liquefied gas at low temp from one end
2) LN(for example ,-196 DEG C); Mixed path 3A, flows through for mist described later and low temperature nitrogen cold-producing medium; Injector (mixed organization) 4A, the gas (calling " liquid nitrogen gasifying gas " in the following text) the normal temperature nitrogen N NG that mixing imports from the other end of normal temperature path 1A and the other end from low temperature path 2A import, liquid nitrogen LN gasifies, to generate mist CG; First Heat Exchanger 5A, perforation by low temperature path 2A to First Heat Exchanger 5A, import above-mentioned liquid nitrogen LN and discharge above-mentioned liquid nitrogen LN as liquid nitrogen gasifying gas LNG, by the perforation of mixed path 3A to First Heat Exchanger 5A, import above-mentioned mist CG and discharge above-mentioned mist CG as low temperature nitrogen cold-producing medium CNG on the other hand; The first Temperature Detector 6A, the temperature of the low temperature nitrogen cold-producing medium CNG of the downstream flow of the First Heat Exchanger 5A of detection in mixed path 3A; The first thermoregulator (the first controlling organization) 7A, based on the detected temperatures of being measured by the first Temperature Detector 6A, output the first control signal CS1; Flow rate regulating valve 8A, based on the first control signal CS1, adjusts the flow of the normal temperature nitrogen N NG that flows to normal temperature path 1A; Adjust valve 9A with first flow, based on the first control signal CS1, be adjusted at the flow of the liquid nitrogen gasifying gas LNG of the downstream flow of the First Heat Exchanger 5A in the 2A of low temperature path.
In addition, in the inside of First Heat Exchanger 5A, low temperature path 2A and mixed path 3A are parallel, and are configured to respectively mobile liquid nitrogen LN and mist CG in low temperature path 2A and mixed path 3A and carry out each other heat exchange.Particularly, low temperature path 2A and mixed path 3A arrange as these liquid nitrogens LN and mist CG flow along opposite directions, become adverse current.
In addition, the related thermophore cooling device 200A of the first embodiment of the present invention is made up of following structure: as the cryogenic gas feedway 100A of said structure; Add thermophore circulating path 21, for thermophore HM circulation; The second heat exchanger 22, be constituted as by the parallel of mixed path 3A and thermophore circulating path 21 and the perforation to the second heat exchanger 22, make respectively mobile low temperature nitrogen cold-producing medium CNG and thermophore HM in mixed path 3A and thermophore circulating path 21 carry out each other heat exchange; Thermophore circulating pump 23, makes thermophore HM in the interior circulation of thermophore circulating path 21; The second Temperature Detector 24, the temperature of the thermophore HM detecting in the 21 interior circulations of thermophore circulating path; The second thermoregulator 25, based on the detected temperatures of being measured by the second Temperature Detector 24, output the second control signal CS2; The second flow rate regulating valve 26, based on the second control signal CS2, is adjusted at the flow of low temperature nitrogen cold-producing medium CNG mobile in mixed path 3A; With reserve tank 27, for absorbing the temperature variant expansion of companion and the contraction of thermophore.
In addition, the related low-temp reaction control device 300A of the first embodiment of the present invention is by the thermophore cooling device 200A as said structure with add low-temp reaction groove 31 and form.At this, low-temp reaction groove 31 at least possesses can make the sleeve pipe 31a of thermophore HM circulation and the stirring motor 31b for stirring reaction liquid.
Below, the first embodiment as constituted above related cryogenic gas feedway 100A, thermophore cooling device 200A and action and its effect of low-temp reaction control device 300A are described.
Import liquid nitrogen (LN from one end of low temperature path 2A
2) LN, and import to First Heat Exchanger 5A.Liquid nitrogen LN by First Heat Exchanger 5A and mixed path 3A in mist CG between heat exchange, become liquid nitrogen gasifying gas LNG.The liquid nitrogen gasifying gas LNG discharging from First Heat Exchanger 5A and being imported in injector 4A from the normal temperature nitrogen N NG of one end importing of normal temperature path 1A on the other hand, and utilize the pressure differential of these gases and mix.The mist CG discharging from injector 4A is imported in First Heat Exchanger 5A, carry out and low temperature path 2A in liquid nitrogen LN between heat exchange, and by turbulence effects and by samming, and discharge as low temperature nitrogen cold-producing medium CNG.
The first Temperature Detector 6A detects the temperature of the low temperature nitrogen cold-producing medium CNG of the downstream flow of the First Heat Exchanger 5A in mixed path 3A.Corresponding the first control signal CS1 of difference between the first thermoregulator 7A output and the detected temperatures of being measured by the first Temperature Detector 6A and low temperature nitrogen cold-producing medium CNG temperature required (target temperature).Flow rate regulating valve 8A, based on the first control signal CS1, adjusts the flow of the normal temperature nitrogen N NG that flows to normal temperature path 1A.First flow is adjusted valve 9A based on the first control signal CS1, is adjusted at the flow of the liquid nitrogen gasifying gas LNG of the downstream flow of the First Heat Exchanger 5A in the 2A of low temperature path.So, by adjust the FEEDBACK CONTROL of valve 9A as structure taking the first Temperature Detector 6A, the first thermoregulator 7A, flow rate regulating valve 8A and first flow, low temperature nitrogen cold-producing medium CNG is adjusted to temperature required.
In addition, can import in the primary side adjustment of First Heat Exchanger 5A the flow of the liquid nitrogen gasifying gas LNG of injector 4A, but because so become the structure of the flow of the gas of adjusting the single-phase after the secondary side of First Heat Exchanger 5A, i.e. liquid nitrogen gasifying gas LNG, i.e. conduct gasification, so with regulate First Heat Exchanger 5A primary side, follow compared with the flow situation of liquid nitrogen LN of phase transformation, can carry out accurate Flow-rate adjustment.
As above, be adjusted to temperature required low temperature nitrogen cold-producing medium CNG and be fed into the second heat exchanger 22, and by heat exchange, carry out cooling for thermophore HM mobile in thermophore circulating path 21.At this, the second Temperature Detector 24 detects the temperature at the thermophore HM of thermophore circulating path 21 interior circulations.Corresponding the second control signal CS2 of difference between the second thermoregulator 25 outputs and the detected temperatures of being measured by the second Temperature Detector 24 and thermophore HM temperature required (target temperature).The second flow rate regulating valve 26, based on the second control signal CS2, is adjusted at the flow of low temperature nitrogen cold-producing medium CNG mobile in mixed path 3A.So, by the FEEDBACK CONTROL taking the second Temperature Detector 24, the second thermoregulator 25 and the second flow rate regulating valve 26 as structure, thermophore HM is adjusted to temperature required.
As above be adjusted to temperature required thermophore HM is supplied to low-temp reaction groove 31 sleeve pipe 31a by the action of thermophore circulating pump 23.Thus, the reactant liquor of reactive tank inside is cooled and is adjusted into the temperature of regulation.
As above, first embodiment of the invention, owing to by First Heat Exchanger 5A, liquid nitrogen LN being transformed to the liquid nitrogen gasifying gas LNG of the temperature that approaches normal temperature nitrogen N NG, and mix described normal temperature nitrogen N NG and described liquid nitrogen gasifying gas LNG, therefore can realize uniform mixing.In addition, owing to adopting injector 4A in this mixing, even if therefore the pressure of described normal temperature nitrogen N NG and described liquid nitrogen gasifying gas LNG differs from one another, also can easily realize mixing, in addition, can make equipment miniaturization compared with using the situation of general blender.
In addition, owing to by First Heat Exchanger 5A, liquid nitrogen LN being transformed to the liquid nitrogen gasifying gas LNG of the temperature that approaches normal temperature nitrogen N NG, and mix described normal temperature nitrogen N NG and described liquid nitrogen gasifying gas LNG, the stable temperature control of the low temperature nitrogen cold-producing medium CNG therefore being undertaken by the flow adjustment of normal temperature nitrogen N NG and liquid nitrogen gasifying gas LNG.Particularly, owing to can avoiding resulting from, by the ripple control of flow of pulsatile change that mixes the bad temperature causing, therefore to make to control stabilisation.In addition, even if the target temperature of low temperature nitrogen cold-producing medium CNG changes, also can suitably follow this target temperature value.On the other hand, the low-temperature heat quantity of liquid nitrogen LN effectively can be used in the generation of low temperature nitrogen cold-producing medium CNG.
In addition, due to the flow of the low temperature nitrogen cold-producing medium CNG by controlling temperature stabilization, be controlled at exactly and stably the temperature of thermophore HM touring in thermophore circulating path 21, therefore can set more ideally the target temperature of the thermophore HM of the freezing point of having considered thermophore HM., can, in the case of not producing in the second heat exchanger 22 the freezing of thermophore HM, the target temperature of thermophore HM be set as approaching to the freezing point of this thermophore HM.Thus, can prevent by the pressure loss in the inaccessible of the thermophore circulating path 21 that freezes to cause and the path that caused by this obturation, and suppress excessive heat and invade, totally can Labor-saving as device.
In addition, when low-temp reaction groove 31 uses exactly and stably controls when approaching the thermophore HM of low temperature of freezing point of thermophore HM, can at lower temperature, stably control reactive tank, thereby can carry out the temperature control of wide region.
(the second embodiment)
Secondly, the second embodiment of the present invention is described.Fig. 2 is the system diagram of the second embodiment of cryogenic gas feedway of the present invention, thermophore cooling device and low-temp reaction control device.
As shown in Figure 2, the related cryogenic gas feedway 100B of the second embodiment of the present invention possesses: normal temperature path 1B, imports normal temperature nitrogen (GN from one end
2) NNG; Low temperature path 2B, imports liquid nitrogen (LN from one end
2) LN(for example ,-196 DEG C); Mixed path 3B, for low temperature nitrogen flow of refrigerant described later; First Heat Exchanger 5B, carry out each other heat exchange by the normal temperature nitrogen N NG that makes to import from normal temperature path 1B and the liquid nitrogen LN importing from low temperature path 2B, thereby discharge as gas (calling " liquid nitrogen gasifying gas " in the following text) LNG of nitrogen CNNG after heat exchange and liquid nitrogen LN gasification result respectively; Injector 4B, mixes nitrogen CNNG and liquid nitrogen gasifying gas LNG from the heat exchange of First Heat Exchanger 5B discharge, and generates low temperature nitrogen cold-producing medium CNG; The first Temperature Detector 6B, the temperature of detection mobile low temperature nitrogen cold-producing medium CNG in mixed path 3B; The first thermoregulator 7B, based on the detected temperatures of being measured by the first Temperature Detector 6B, output the first control signal CS1; Flow rate regulating valve 8B, based on the first control signal CS1, adjusts the flow of the normal temperature nitrogen N NG that flows to normal temperature path 1B; Adjust valve 9B with first flow, based on the first control signal CS1, be adjusted at the flow of the liquid nitrogen gasifying gas LNG of the downstream flow of the First Heat Exchanger 5B in the 2B of low temperature path.
In addition, in the inside of First Heat Exchanger 5B, normal temperature path 1B and low temperature path 2B are parallel, and are configured to respectively mobile normal temperature nitrogen N NG and liquid nitrogen LN in normal temperature path 1B and low temperature path 2B and carry out each other heat exchange.Particularly, normal temperature path 1B and low temperature path 2B arrange and flow along identical direction into these normal temperature nitrogen N NG and liquid nitrogen LN.
In addition, the related thermophore cooling device 200B of the second embodiment of the present invention is except comprising that the thermophore cooling device 200A related with the first embodiment is identical as the cryogenic gas feedway 100B of said structure.
In addition, the related low-temp reaction control device 300B of the second embodiment of the present invention is except comprising that the low-temp reaction control device 300A related with the first embodiment is identical as the thermophore cooling device 200B of said structure.
Below, the first embodiment as constituted above related cryogenic gas feedway 100B, thermophore cooling device 200B and action and its effect of low-temp reaction control device 300B are described.
Import normal temperature nitrogen N NG from one end of normal temperature path 1B, and import to First Heat Exchanger 5B.In addition, import liquid nitrogen (LN from one end of low temperature path 2B
2) LN, and import to First Heat Exchanger 5B.First Heat Exchanger 5B carries out heat exchange each other by the normal temperature nitrogen N NG that makes to import from normal temperature path 1B and the liquid nitrogen LN importing from low temperature path 2B, thereby discharges as having reduced gas (calling " liquid nitrogen gasifying gas " in the following text) LNG of nitrogen CNNG and liquid nitrogen LN gasification result after the heat exchange of temperature difference.Injector 4B, by nitrogen CNNG and liquid nitrogen gasifying gas LNG the heat exchange of discharging from First Heat Exchanger 5B, utilizes the pressure differential of these gases to mix, to generate low temperature nitrogen cold-producing medium CNG.
The first Temperature Detector 6B detects the temperature of mobile low temperature nitrogen cold-producing medium CNG in mixed path 3B.Corresponding the first control signal CS1 of difference between the first thermoregulator 7B output and the detected temperatures of being measured by the first Temperature Detector 6B and low temperature nitrogen cold-producing medium CNG temperature required (target temperature).Flow rate regulating valve 8B, based on the first control signal CS1, is adjusted at the flow of the normal temperature nitrogen N NG of the upstream flow of the First Heat Exchanger 5B in the 1B of normal temperature path.First flow is adjusted valve 9B based on the first control signal CS1, is adjusted at the flow of the liquid nitrogen gasifying gas LNG of the downstream flow of the First Heat Exchanger 5B in the 2B of low temperature path.So, by adjust the FEEDBACK CONTROL of valve 9B as structure taking the first Temperature Detector 6B, the first thermoregulator 7B, flow rate regulating valve 8B and first flow, low temperature nitrogen cold-producing medium CNG is adjusted to temperature required.
In addition, can import in the primary side adjustment of First Heat Exchanger 5B the gasifying gas flow of injector 4B, but because so become adjust First Heat Exchanger 5B secondary side, liquid nitrogen gasifying gas LNG, as the structure of the flow of the gas of the single-phase after gasification, so compared with regulating the situation of flow of liquid nitrogen LN primary side, that follow phase transformation of First Heat Exchanger 5B, can carry out accurate Flow-rate adjustment.
As above, be adjusted to temperature required low temperature nitrogen cold-producing medium CNG and be supplied to the second heat exchanger 22, by heat exchange, carry out cooling for thermophore HM mobile in thermophore circulating path 21.At this, the second Temperature Detector 24 detects the temperature at the thermophore HM of thermophore circulating path 21 interior circulations.Corresponding the second control signal CS2 of difference between the second thermoregulator 25 output and the detected temperatures of being measured by the second Temperature Detector 24 and thermophore HM temperature required.The second flow rate regulating valve 26, based on the second control signal CS2, is adjusted at the flow of low temperature nitrogen cold-producing medium CNG mobile in mixed path 3B.So, by the FEEDBACK CONTROL taking the second Temperature Detector 24, the second thermoregulator 25 and the second flow rate regulating valve 26 as structure, thermophore HM is adjusted to temperature required.
As above be adjusted to temperature required thermophore HM is fed into low-temp reaction groove 31 sleeve pipe 31a by the action of thermophore circulating pump 23.Thus, the reactant liquor of reactive tank inside is cooled and is adjusted into the temperature of regulation.
As above, second embodiment of the invention, due to nitrogen CNNG and described liquid nitrogen gasifying gas LNG after the described heat exchange of mixing, therefore can realize uniform mixing.In addition, owing to adopting injector 4B in this mixing, though therefore after described heat exchange the pressure of nitrogen CNNG and described liquid nitrogen gasifying gas LNG differ from one another, also can easily realize mixing, in addition, can make equipment miniaturization compared with using the situation of general blender.
In addition, owing to by First Heat Exchanger 5B, normal temperature nitrogen N NG and liquid nitrogen LN being transformed to nitrogen CNNG and liquid nitrogen gasifying gas LNG after the heat exchange that has reduced temperature difference, and mix these gas, the stable temperature control of the low temperature nitrogen cold-producing medium CNG therefore being undertaken by the flow adjustment of normal temperature nitrogen N NG and liquid nitrogen gasifying gas LNG.Particularly, owing to can avoiding resulting from, by the ripple control of flow of pulsatile change that mixes the bad temperature causing, therefore to make to control stabilisation.In addition, even if the target temperature of low temperature nitrogen cold-producing medium CNG changes, also can suitably follow target temperature value.On the other hand, the low-temperature heat quantity of liquid nitrogen LN effectively can be used in the generation of low temperature nitrogen cold-producing medium CNG.
In addition, due to the flow of the low temperature nitrogen cold-producing medium CNG by controlling temperature stabilization, be controlled at exactly and stably the temperature of thermophore HM touring in thermophore circulating path 21, therefore can set more ideally the target temperature of the thermophore HM of the freezing point of having considered thermophore HM., can, in the case of not producing in the second heat exchanger 22 the freezing of thermophore HM, the target temperature of thermophore HM be set as approaching to the freezing point of this thermophore HM.Thus, can prevent by the pressure loss in the inaccessible of the thermophore circulating path 21 that freezes to cause and the path that caused by this obturation, and suppress excessive heat and invade, can Labor-saving as device entirety.
In addition, when low-temp reaction groove 31 uses exactly and stably controls when approaching the thermophore HM of low temperature of freezing point of thermophore HM, can at lower temperature, stably control reactive tank, thereby can carry out the temperature control of wide region.
(the 3rd embodiment)
Secondly, the 3rd embodiment of the present invention is described.Fig. 3 is the system diagram of the 3rd embodiment of cryogenic gas feedway of the present invention, thermophore cooling device and low-temp reaction control device.
As shown in Figure 3, the related cryogenic gas feedway 100C of the 3rd embodiment of the present invention possesses: normal temperature path 1C, imports the normal temperature nitrogen (GN that is in a ratio of high-temperature gas with liquefied gas at low temp described later from one end
2) NNG; Low temperature path 2C, imports the liquid nitrogen (LN as liquefied gas at low temp from one end
2) LN(for example ,-196 DEG C); Mixed path 3C, for mist described later and low temperature nitrogen flow of refrigerant; Injector (mixed organization) 4C, mix the normal temperature nitrogen N NG importing from the other end of normal temperature path 1C and gas (calling " liquid nitrogen gasifying gas " in the following text) LNG that import from the other end of low temperature path 2C, liquid nitrogen LN gasification result, generate mist CG; First Heat Exchanger 5C, perforation by low temperature path 2C to First Heat Exchanger 5C, import above-mentioned liquid nitrogen LN and discharge as liquid nitrogen gasifying gas LNG, by the perforation of mixed path 3C to First Heat Exchanger 5C, import above-mentioned mist CG and discharge as low temperature nitrogen cold-producing medium CNG on the other hand; The first Temperature Detector 6C, the temperature of the low temperature nitrogen cold-producing medium CNG of the downstream flow of the First Heat Exchanger 5C of detection in mixed path 3C; The first thermoregulator (the first controlling organization) 7C, based on the detected temperatures of being measured by the first Temperature Detector 6C, output the first control signal CS1; Flow rate regulating valve 8C, based on the second control signal CS2 exporting from the second thermoregulator 25 described later, adjusts the flow of the normal temperature nitrogen N NG that flows to normal temperature path 1C; Adjust valve 9C with first flow, based on the first control signal CS1, be adjusted at the flow of the liquid nitrogen gasifying gas LNG of the downstream flow of the First Heat Exchanger 5C in the 2C of low temperature path.
In addition, in the inside of First Heat Exchanger 5C, low temperature path 2C and mixed path 3C are parallel, and are configured to respectively mobile liquid nitrogen LN and mist CG in low temperature path 2C and mixed path 3C and carry out each other heat exchange.Particularly, low temperature path 2C and mixed path 3C arrange as these liquid nitrogens LN and mist CG flow along opposite directions, become adverse current.
In addition, the related thermophore cooling device 200C of the 3rd embodiment of the present invention is made up of following structure: as the cryogenic gas feedway 100C of said structure; Add thermophore circulating path 21, for thermophore HM circulation; The second heat exchanger 22, be constituted as by the parallel of mixed path 3C and thermophore circulating path 21 and the perforation to the second heat exchanger 22, make respectively mobile low temperature nitrogen cold-producing medium CNG and thermophore HM in mixed path 3C and thermophore circulating path 21 carry out each other heat exchange; Thermophore circulating pump 23, makes thermophore HM in the interior circulation of thermophore circulating path 21; The second Temperature Detector 24, the temperature of the thermophore HM detecting in the 21 interior circulations of thermophore circulating path; The second thermoregulator 25, based on the detected temperatures of being measured by the second Temperature Detector 24, output the second control signal CS2; With reserve tank 27, for absorbing the temperature variant expansion of companion and the contraction of thermophore.
In addition, the related low-temp reaction control device 300C of the 3rd embodiment is except comprising that low-temp reaction control device 300A, the 300B related with first and second embodiment are identical as the thermophore cooling device 200C of said structure.
Below, the 3rd embodiment as constituted above related cryogenic gas feedway 100C, thermophore cooling device 200C and action and its effect of low-temp reaction control device 300C are described.
Import liquid nitrogen (LN from one end of low temperature path 2C
2) LN, and import to First Heat Exchanger 5C.Liquid nitrogen LN by First Heat Exchanger 5C and mixed path 3A in mist CG between heat exchange, become liquid nitrogen gasifying gas LNG.The liquid nitrogen gasifying gas LNG discharging from First Heat Exchanger 5C and being imported in injector 4C from the normal temperature nitrogen N NG of one end importing of normal temperature path 1C on the other hand, and utilize the pressure differential of these gases and mix.The mist CG discharging from injector 4C is imported in First Heat Exchanger 5C, carry out and low temperature path 2C in liquid nitrogen LN between heat exchange, and by turbulence effects and by samming, being discharged from as low temperature nitrogen cold-producing medium CNG.
The first Temperature Detector 6C detects the temperature of the low temperature nitrogen cold-producing medium CNG of the downstream flow of the First Heat Exchanger 5C in mixed path 3C.Corresponding the first control signal CS1 of difference between the first thermoregulator 7C output and the detected temperatures of being measured by the first Temperature Detector 6C and low temperature nitrogen cold-producing medium CNG temperature required (target temperature).The second control signal CS2 of flow rate regulating valve 8C based on exporting from the second thermoregulator 25, is adjusted at the flow of normal temperature nitrogen N NG mobile in the 1C of normal temperature path.First flow is adjusted valve 9C based on the first control signal CS1, is adjusted at the flow of the liquid nitrogen gasifying gas LNG of the downstream flow of the First Heat Exchanger 5C in the 2C of low temperature path.
In addition, can import in the primary side adjustment of First Heat Exchanger 5C the flow of the liquid nitrogen gasifying gas LNG of injector 4C, but because so become the structure of the flow of the gas of adjusting the single-phase after the secondary side of First Heat Exchanger 5C, i.e. liquid nitrogen gasifying gas LNG, i.e. conduct gasification, therefore with regulate First Heat Exchanger 5C primary side, follow compared with the situation of flow of the liquid nitrogen LN of phase transformation, can carry out accurate Flow-rate adjustment.
The low temperature nitrogen cold-producing medium CNG deriving from heat exchanger 5C is fed into the second heat exchanger 22, by the cooling thermophore HM mobile in thermophore circulating path 21 of heat exchange.At this, the second Temperature Detector 24 detects the temperature at the thermophore HM of thermophore circulating path 21 interior circulations.Corresponding the second control signal CS2 of difference between the second thermoregulator 25 outputs and the detected temperatures of being measured by the second Temperature Detector 24 and thermophore HM temperature required (target temperature).
As above, by adjusting valve 9C, the second Temperature Detector 24 and the second thermoregulator 25 FEEDBACK CONTROL as structure taking the first Temperature Detector 6C, the first thermoregulator 7C, flow rate regulating valve 8C, first flow, low temperature nitrogen cold-producing medium CNG and thermophore HM are adjusted to temperature required.
Be adjusted to temperature required thermophore HM is fed into low-temp reaction groove 31 sleeve pipe 31a by the action of thermophore circulating pump 23.Thus, the reactant liquor of reactive tank inside is cooled and is adjusted into the temperature of regulation.
As above, according to the 3rd embodiment of the present invention, owing to by First Heat Exchanger 5C, liquid nitrogen LN being transformed to the liquid nitrogen gasifying gas LNG of the temperature that approaches normal temperature nitrogen N NG, and mix described normal temperature nitrogen N NG and described liquid nitrogen gasifying gas LNG, therefore can realize uniform mixing.In addition, owing to adopting injector 4C in this mixing, even if therefore the pressure of described normal temperature nitrogen N NG and described liquid nitrogen gasifying gas LNG differs from one another, also can easily realize mixing, in addition, can make equipment miniaturization compared with using the situation of general blender.
In addition, owing to by First Heat Exchanger 5C, liquid nitrogen LN being transformed to the liquid nitrogen gasifying gas LNG of the temperature that approaches normal temperature nitrogen N NG, and mix described normal temperature nitrogen N NG and described liquid nitrogen gasifying gas LNG, the stable temperature control of the low temperature nitrogen cold-producing medium CNG therefore being undertaken by the flow adjustment of normal temperature nitrogen N NG and liquid nitrogen gasifying gas LNG.Particularly, owing to can avoiding resulting from, by the ripple control of flow of pulsatile change that mixes the bad temperature causing, therefore to make to control stabilisation.In addition, even if the target temperature of low temperature nitrogen cold-producing medium CNG changes, also can suitably follow target temperature value.On the other hand, the low-temperature heat quantity of liquid nitrogen LN effectively can be used in the generation of low temperature nitrogen cold-producing medium CNG.
In addition, due to by the low temperature nitrogen cold-producing medium CNG that imports temperature stabilization to the second heat exchanger 22, thereby be controlled at exactly and stably the temperature of thermophore HM touring in thermophore circulating path 21, therefore can set more ideally the target temperature of the thermophore HM of the freezing point of having considered thermophore HM., can, in the case of not producing in the second heat exchanger 22 the freezing of thermophore HM, the target temperature of thermophore HM be set as approaching to the freezing point of this thermophore HM.Thus, can prevent by the pressure loss in the inaccessible of the thermophore circulating path 21 that freezes to cause and the path that caused by this obturation, and suppress excessive heat and invade, can Labor-saving as device entirety.
In addition, when low-temp reaction groove 31 uses exactly and stably controls when approaching the thermophore HM of low temperature of freezing point of thermophore HM, can at lower temperature, stably control reactive tank, thereby can carry out the temperature control of wide region.
But, cryogenic gas feedway 100A, the thermophore cooling device 200A of the first above-mentioned embodiment and low-temp reaction control device 300A be the low temperature nitrogen cold-producing medium CNG based on being detected by Temperature Detector 6A temperature (, the temperature of the low temperature nitrogen cold-producing medium CNG of the downstream flow of the First Heat Exchanger 5A in mixed path 3A), adjust the structure of flow of the normal temperature nitrogen N NG importing to normal temperature path 1A and the liquid nitrogen gasifying gas LNG importing to low temperature path 2A.Therefore, the temperature with the low temperature nitrogen cold-producing medium CNG being detected by Temperature Detector 6A be in required scope after, the flow of low temperature nitrogen cold-producing medium CNG of deriving from heat exchanger 5A can not change and stable advantage.
On the other hand, concerning low-temp reaction control device 300A, the low-temperature heat quantity needing in thermophore HM in the case of load due in low-temp reaction groove 31 increases increases, have and need to increase for carrying out the situation of the flow of the low temperature nitrogen cold-producing medium CNG of heat exchange with thermophore HM.In cryogenic gas feedway 100A, the thermophore cooling device 200A and low-temp reaction control device 300A of the first embodiment, in the case of the aperture of flow rate regulating valve 26 is made as maximum, the flow maximum of low temperature nitrogen cold-producing medium CNG.
In contrast to this, cryogenic gas feedway 100C, the thermophore cooling device 200C of the 3rd embodiment and low-temp reaction control device 300C be the thermophore HM based on being detected by the second Temperature Detector 24 temperature (, the temperature of the thermophore HM of the downstream flow of the second heat exchanger 22 in thermophore circulating path 21), adjust the structure that conduct is used for the flow of the normal temperature nitrogen N NG of the bare flow of the flow increase and decrease that makes low temperature nitrogen cold-producing medium CNG.Therefore, the low-temperature heat quantity needing in thermophore HM in the load increase due in low-temp reaction groove 31 increases, thereby needing increases for carrying out in the situation of flow of the low temperature nitrogen cold-producing medium CNG of heat exchange with thermophore HM, can make the flow of the low temperature nitrogen cold-producing medium CNG deriving from the first heat exchanger 5C is required value according to the temperature increase and decrease of thermophore HM.Therefore, in order to obtain the cooling required low-temperature heat quantity of thermophore HM, can adjust the temperature of low temperature nitrogen cold-producing medium CNG and flow the two, and realize the more stable temperature control of thermophore HM.
Further, owing to can omitting the flow rate regulating valve 26 using in the first embodiment, therefore miniaturization and the cost degradation of device become possibility.
(the 4th embodiment)
Secondly, the 4th embodiment of the present invention is described.Fig. 4 is the system diagram of the 4th embodiment of cryogenic gas feedway of the present invention, thermophore cooling device and low-temp reaction control device.
As shown in Figure 4, the related cryogenic gas feedway 100D of the 4th embodiment of the present invention possesses: normal temperature path 1D, imports normal temperature nitrogen (GN from one end
2) NNG; Low temperature path 2D, imports liquid nitrogen (LN from one end
2) LN(for example ,-196 DEG C); Mixed path 3D, flows through for low temperature nitrogen cold-producing medium described later; First Heat Exchanger 5D, carry out each other heat exchange by the normal temperature nitrogen N NG that makes to import from normal temperature path 1D and the liquid nitrogen LN importing from low temperature path 2D, thereby discharge as gas (calling " liquid nitrogen gasifying gas " in the following text) LNG of nitrogen CNNG after heat exchange and liquid nitrogen LN gasification result respectively; Injector 4D, mixes nitrogen CNNG and liquid nitrogen gasifying gas LNG from the heat exchange of First Heat Exchanger 5D discharge, generates low temperature nitrogen cold-producing medium CNG; The first Temperature Detector 6D, the temperature of detection mobile low temperature nitrogen cold-producing medium CNG in mixed path 3D; The first thermoregulator 7D, based on the detected temperatures of being measured by the first Temperature Detector 6D, output the first control signal CS1; Flow rate regulating valve 8D, based on the second control signal CS2 described later, adjusts the flow of the normal temperature nitrogen N NG that flows to normal temperature path 1D; Adjust valve 9D with first flow, based on the first control signal CS1, be adjusted at the flow of the liquid nitrogen gasifying gas LNG of the downstream flow of the First Heat Exchanger 5D in the 2D of low temperature path.
In addition, in the inside of First Heat Exchanger 5B, normal temperature path 1D and low temperature path 2D are parallel, and are configured to respectively mobile normal temperature nitrogen N NG and liquid nitrogen LN in normal temperature path 1D and low temperature path 2D and carry out each other heat exchange.Particularly, normal temperature path 1D and low temperature path 2D arrange as these normal temperature nitrogen N NG and liquid nitrogen LN are flowed along identical direction.
In addition, the related thermophore cooling device 200D of the 4th embodiment of the present invention is made up of following structure: as the cryogenic gas feedway 100D of said structure; Add thermophore circulating path 21, for thermophore HM circulation; The second heat exchanger 22, be constituted as by the parallel of mixed path 3A and thermophore circulating path 21 and the perforation to the second heat exchanger 22, make respectively mobile low temperature nitrogen cold-producing medium CNG and thermophore HM in mixed path 3A and thermophore circulating path 21 carry out each other heat exchange; Thermophore circulating pump 23, makes thermophore HM in the interior circulation of thermophore circulating path 21; The second Temperature Detector 24, the temperature of the thermophore HM detecting in the 21 interior circulations of thermophore circulating path; The second thermoregulator 25, based on the detected temperatures of being measured by the second Temperature Detector 24, output the second control signal CS2; With reserve tank 27, for absorbing the temperature variant expansion of companion and the contraction of thermophore.
In addition, the related low-temp reaction control device 300D of the 4th embodiment of the present invention is except comprising that low-temp reaction control device 300A, 300B, the 300C related with the first to the 3rd embodiment are identical as the thermophore cooling device 200D of said structure.
Below, the 4th embodiment as constituted above related cryogenic gas feedway 100D, thermophore cooling device 200D and action and its effect of low-temp reaction control device 300D are described.
Import normal temperature nitrogen N NG from one end of normal temperature path 1D, and import to First Heat Exchanger 5D.In addition, import liquid nitrogen (LN from one end of low temperature path 2D
2) LN, and import to First Heat Exchanger 5D.First Heat Exchanger 5D carries out heat exchange each other by the normal temperature nitrogen N NG that makes to import from normal temperature path 1D and the liquid nitrogen LN importing from low temperature path 2D, thereby discharges as having reduced gas (calling " liquid nitrogen gasifying gas " in the following text) LNG of nitrogen CNNG and liquid nitrogen LN gasification result after the heat exchange of temperature difference.Injector 4D, by nitrogen CNNG and liquid nitrogen gasifying gas LNG the heat exchange of discharging from First Heat Exchanger 5D, utilizes the pressure differential of these gases to mix, to generate low temperature nitrogen cold-producing medium CNG.
The first Temperature Detector 6D detects the temperature of mobile low temperature nitrogen cold-producing medium CNG in mixed path 3D.Corresponding the first control signal CS1 of difference between the first thermoregulator 7D output and the detected temperatures of being measured by the first Temperature Detector 6D and low temperature nitrogen cold-producing medium CNG temperature required (target temperature).The second control signal CS2 of flow rate regulating valve 8D based on being exported by the second thermoregulator 25, is adjusted at the flow of the normal temperature nitrogen N NG of the upstream flow of the First Heat Exchanger 5D in the 1D of normal temperature path.First flow is adjusted valve 9D based on the first control signal CS1, is adjusted at the flow of the liquid nitrogen gasifying gas LNG of the downstream flow of the First Heat Exchanger 5D in the 2D of low temperature path.
In addition, can import in the primary side adjustment of First Heat Exchanger 5D the gasifying gas flow of injector 4D, but because so become the structure of the flow of the gas of adjusting the single-phase after the secondary side of First Heat Exchanger 5D, i.e. liquid nitrogen gasifying gas LNG, i.e. conduct gasification, therefore with adjust First Heat Exchanger 5D primary side, follow compared with the situation of flow of the liquid nitrogen LN of phase transformation, can carry out accurate flow adjustment.
The low temperature nitrogen cryogen CNG deriving from injector 4D is fed into the second heat exchanger 22, carries out cooling by heat exchange to thermophore HM mobile in thermophore circulating path 21.At this, the second Temperature Detector 24 detects the temperature at the thermophore HM of thermophore circulating path 21 interior circulations.Corresponding the second control signal CS2 of difference between the second thermoregulator 25 output and the detected temperatures of being measured by the second Temperature Detector 24 and thermophore HM temperature required.
As above, by adjusting valve 9D, the second Temperature Detector 24 and the second thermoregulator 25 FEEDBACK CONTROL as structure taking the first Temperature Detector 6D, the first thermoregulator 7D, flow rate regulating valve 8D, first flow, low temperature nitrogen cold-producing medium CNG and thermophore HM are adjusted to temperature required.
Be adjusted to temperature required thermophore HM is fed into low-temp reaction groove 31 sleeve pipe 31a by the action of thermophore circulating pump 23.Thus, the reactant liquor of reactive tank inside is cooled and is adjusted into the temperature of regulation.
As above,, according to the 4th embodiment of the present invention, due to nitrogen and described liquid nitrogen gasifying gas after the described heat exchange of mixing, therefore can realize uniform mixing.In addition, owing to adopting injector 4D in this mixing, though therefore after described heat exchange the pressure of nitrogen and described liquid nitrogen gasifying gas differ from one another, also can easily realize mixing, in addition, can make equipment miniaturization compared with using the situation of general blender.
In addition, owing to by First Heat Exchanger 5D, normal temperature nitrogen N NG and liquid nitrogen LN being transformed to nitrogen CNNG and liquid nitrogen gasifying gas LNG after the heat exchange that has reduced temperature difference, and mix these gas, the stable temperature control of the low temperature nitrogen cold-producing medium CNG therefore being undertaken by the flow adjustment of normal temperature nitrogen N NG and liquid nitrogen gasifying gas LNG.Particularly, owing to can avoiding resulting from, by the ripple control of flow of pulsatile change that mixes the bad temperature causing, therefore to make to control stabilisation.In addition, even if the target temperature of low temperature nitrogen cold-producing medium CNG changes, also can suitably follow target temperature value.On the other hand, the low-temperature heat quantity of liquid nitrogen LN effectively can be used in the generation of low temperature nitrogen cold-producing medium CNG.
In addition, due to by the low temperature nitrogen cold-producing medium CNG that imports temperature stabilization to the second heat exchanger 22, thereby be controlled at exactly and stably the temperature of thermophore HM touring in thermophore circulating path 21, therefore can set more ideally the target temperature of the thermophore HM of the freezing point of having considered thermophore HM., can, in the case of not producing in the second heat exchanger 22 the freezing of thermophore HM, the target temperature of thermophore HM be set as approaching to the freezing point of thermophore HM.Thus, can prevent by the pressure loss in the inaccessible of the thermophore circulating path 21 that freezes to cause and the path that caused by this obturation, and suppress excessive heat and invade, can Labor-saving as device entirety.
In addition, when low-temp reaction groove 31 uses exactly and stably controls when approaching the thermophore HM of low temperature of freezing point of thermophore HM, can at lower temperature, stably control reactive tank, thereby can carry out the temperature control of wide region.
But, cryogenic gas feedway 100B, the thermophore cooling device 200B of the second above-mentioned embodiment and low-temp reaction control device 300B be the low temperature nitrogen cold-producing medium CNG based on being detected by Temperature Detector 6B temperature (, the temperature of the low temperature nitrogen cold-producing medium CNG of the downstream flow of the injector 4B in mixed path 3B), adjust the structure of flow of the normal temperature nitrogen N NG importing to normal temperature path 1B and the liquid nitrogen gasifying gas LNG importing to low temperature path 2B.Therefore, the temperature with the low temperature nitrogen cold-producing medium CNG being detected by Temperature Detector 6B be in required scope after, the flow of low temperature nitrogen cold-producing medium CNG of deriving from injector 4B can not change and stable advantage.
On the other hand, concerning low-temp reaction control device 300B, the low-temperature heat quantity needing in thermophore HM in the case of load due in low-temp reaction groove 31 increases increases, have and need to increase for carrying out the situation of the flow of the low temperature nitrogen cold-producing medium CNG of heat exchange with thermophore HM.In cryogenic gas feedway 100B, the thermophore cooling device 200B and low-temp reaction control device 300B of the second embodiment, in the case of the aperture of flow rate regulating valve 26 is made as maximum, the flow maximum of low temperature nitrogen cold-producing medium CNG.
In contrast to this, cryogenic gas feedway 100D, the thermophore cooling device 200D of the 4th embodiment and low-temp reaction control device 300D be the thermophore HM based on being detected by the second Temperature Detector 24 temperature (, the temperature of the thermophore HM of the downstream flow of the second heat exchanger 22 in thermophore circulating path 21), adjust the structure as the flow of the normal temperature nitrogen N NG of the bare flow of the flow increase and decrease for making low temperature nitrogen cold-producing medium CNG.Therefore, the low-temperature heat quantity needing in thermophore HM in the load increase due in low-temp reaction groove 31 increases, thereby needing increases for carrying out in the situation of flow of the low temperature nitrogen cold-producing medium CNG of heat exchange with thermophore HM, can make the flow of the low temperature nitrogen cold-producing medium CNG deriving from injector 4D is required value according to the temperature increase and decrease of thermophore HM.Therefore, can adjust the temperature of low temperature nitrogen cold-producing medium CNG and flow the two, to obtain the cooling required low-temperature heat quantity of thermophore HM, and realize the more stable temperature control of thermophore HM.
Further, owing to can omitting the flow rate regulating valve 26 using in the second embodiment, therefore miniaturization and the cost degradation of device become possibility.
(variation of each embodiment)
The cryogenic gas feedway 100A to 100D that first to fourth above-mentioned embodiment is related, except thermophore cooling device 200A to 200D, can also be applicable in following device.
That is, applicable to carrying out in the cooling bath of food freezing or metal heat treatmet, by supply with the cryogenic gas adjusted by temperature in advance in groove, thereby without agitation fan etc. and cooling object equably.In addition, applicable to thering is the sleeve pipe around reactive tank and the reactive tank that stockpiles reactant liquor or being arranged at the heat exchanger in reactive tank, to the low-temp reaction control device of supplying with cryogenic gas in sleeve pipe or heat exchanger, can be by supplying with the cryogenic gas that be adjusted by temperature in advance, thereby in the case of not make the reactant liquor of heat-transfer area carry out freezing cooling.Further, applicable to coming cooling, condensing with solenoid or other heat exchangers or solidifying in the cold trap of steam, can be by the cryogenic gas that makes to be adjusted by temperature in advance by heat exchanger inside, thus condensing and solidify steam at accurate and uniform temperature.
In addition, in the explanation of each embodiment of the invention described above, flow rate adjusting mechanism using flow rate regulating valve as normal temperature nitrogen N NG and the flow rate adjusting mechanism of liquid nitrogen gasifying gas LNG illustrate, but be not limited to this, can adopt other suitable flow rate adjusting mechanisms such as such as mass flow controller.
In addition, can adopt for example double hose heat exchanger, plate type heat exchanger, plate fin heat exchanger, shell-and-tube heat exchanger, tank and coil exchanger as the second heat exchanger.Particularly, preferred plate type heat exchanger.Because this heat exchanger is high efficiency heat exchanger, and contribute to the miniaturization of device.In addition, preferably using the high efficiency heat exchanger such as board-like as First Heat Exchanger.Because because temperature end temperature difference is little, can easily mix, and can realize miniaturization.
Further, in above-mentioned each embodiment, adopt normal temperature nitrogen N NG and liquid nitrogen LN, but may not be one species, can also mix different types of gas.As object gas, except nitrogen, can use the fluorine class cold-producing medium of oxygen, argon, carbon dioxide, LNG or halocarbon or HFC etc. etc.The gas of any temperature in addition, as long as the temperature higher than liquefied gas at low temp, is not limited to normal temperature, even also can mix with liquefied gas at low temp.
Utilizability in industry
Cryogenic gas feedway of the present invention, thermophore cooling device and low-temp reaction control device can be used in the temperature control in the chemical reaction process such as organic synthesis and crystallization.
Description of reference numerals
100A, 100B, 100C, 100D ... cryogenic gas feedway
1A, 1B, 1C, 1D ... normal temperature path
2A, 2B, 2C, 2D ... low temperature path
3A, 3B, 3C, 3D ... mixed path
4A, 4B, 4C, 4D ... injector (mixed organization)
5A, 5B, 5C, 5D ... First Heat Exchanger
6A, 6B, 6C, 6D ... the first Temperature Detector
7A, 7B, 7C, 7D ... the first thermoregulator (the first controlling organization)
8A, 8B, 8C, 8D ... flow rate regulating valve
9A, 9B, 9C, 9D ... the first control valve
200A, 200B, 200C, 200D ... thermophore cooling device
21 ... thermophore circulating path
22 ... the second heat exchanger
23 ... thermophore circulating pump
24 ... the second Temperature Detector
25 ... the second thermoregulator
26 ... the second control valve
27 ... reserve tank
300A, 300B, 300C, 300D ... low-temp reaction control device
31 ... low-temp reaction groove
31a ... sleeve pipe
31b ... stirring motor
Claims (8)
1. a cryogenic gas feedway, possesses:
First Heat Exchanger, be mixed with mist and the described liquefied gas at low temp of the gasifying gas after gasifying liquefied gas at low temp and the gas that temperature is high compared with described liquefied gas at low temp by importing, and make described mist and described liquefied gas at low temp carry out each other heat exchange, thereby discharge described mist as cryogenic gas cold-producing medium, and described liquefied gas at low temp is discharged as described gasifying gas;
Mixed organization, the described gasifying gas that mixes described gas and discharge from described First Heat Exchanger, and discharge as described mist; With
The first controlling organization, difference between the temperature based on described cryogenic gas cold-producing medium is detected and the target temperature of described cryogenic gas cold-producing medium, adjustment imports to described gas and the described gasifying gas amount separately of described mixed organization, thereby is described target temperature by the temperature control of described cryogenic gas cold-producing medium.
2. a cryogenic gas feedway, possesses:
First Heat Exchanger, by importing liquefied gas at low temp and the high gas of temperature compared with described liquefied gas at low temp, and make described liquefied gas at low temp and described gas carry out each other heat exchange, thereby discharge as gas after the gasifying gas after described gasifying liquefied gas at low temp and heat exchange respectively, wherein, after described heat exchange, gas is the described gas after heat exchange;
Mixed organization, mixes gas and described gasifying gas from the described heat exchange of described First Heat Exchanger discharge, and discharges as cryogenic gas cold-producing medium; With
The first controlling organization, difference between the temperature based on described cryogenic gas cold-producing medium is detected and the target temperature of described cryogenic gas cold-producing medium, adjust the amount of the gas that temperature is high compared with importing to the described liquefied gas at low temp of described First Heat Exchanger and import to the amount of the described gasifying gas of described mixed organization, thereby being described target temperature by the temperature control of described cryogenic gas cold-producing medium.
3. cryogenic gas feedway according to claim 1 and 2, wherein,
Described mixed organization is injector.
4. a thermophore cooling device, possesses:
Cryogenic gas feedway as claimed in claim 1 or cryogenic gas feedway as claimed in claim 2;
The second heat exchanger, make the described cryogenic gas cold-producing medium of the described controlled temperature of discharging from described cryogenic gas feedway and circulating path touring thermophore carry out each other heat exchange; With
The second controlling organization, difference between the temperature based on described thermophore is detected and the target temperature of this thermophore, adjustment imports to the amount of the described cryogenic gas cold-producing medium of described the second heat exchanger, thus the target temperature that is described thermophore by the temperature control of described thermophore.
5. a low-temp reaction control device, possesses:
Thermophore cooling device as claimed in claim 4; With
Low-temp reaction groove, is constituted as the described thermophore that imports the described controlled temperature that circulates in described circulating path, thus by cooling the reactant liquor of reactive tank inside be adjusted into temperature required.
6. a thermophore cooling device, possesses:
First Heat Exchanger, be mixed with mist and the described liquefied gas at low temp of the gasifying gas after gasifying liquefied gas at low temp and the gas that temperature is high compared with described liquefied gas at low temp by importing, and make described mist and described liquefied gas at low temp carry out each other heat exchange, thereby discharge described mist as cryogenic gas cold-producing medium, and described liquefied gas at low temp is discharged as described gasifying gas;
Mixed organization, the described gasifying gas that mixes described gas and discharge from described First Heat Exchanger, and discharge as described mist;
The first controlling organization, difference between the temperature based on described cryogenic gas cold-producing medium is detected and the target temperature of described cryogenic gas cold-producing medium, adjustment imports to the amount of the described gas of described mixed organization, thereby is described target temperature by the temperature control of described cryogenic gas cold-producing medium;
The second heat exchanger, make the described cryogenic gas cold-producing medium of the described controlled temperature of discharging from described First Heat Exchanger and circulating path touring thermophore carry out each other heat exchange; With
The second controlling organization, the difference between the temperature based on described thermophore is detected and the target temperature of this thermophore, adjusts the amount of described gas, thus the target temperature that is described thermophore by the temperature control of described thermophore.
7. a thermophore cooling device, possesses:
First Heat Exchanger, by importing liquefied gas at low temp and the high gas of temperature compared with described liquefied gas at low temp, and make described liquefied gas at low temp and described gas carry out each other heat exchange, thereby discharge as gas after the gasifying gas after described gasifying liquefied gas at low temp and heat exchange respectively, wherein, after described heat exchange, gas is the described gas after heat exchange;
Mixed organization, mixes gas and described gasifying gas from the described heat exchange of described First Heat Exchanger discharge, and discharges as cryogenic gas cold-producing medium;
The first controlling organization, difference between the temperature based on described cryogenic gas cold-producing medium is detected and the target temperature of described cryogenic gas cold-producing medium, adjustment imports to the amount of the described gasifying gas of described mixed organization, thereby is described target temperature by the temperature control of described cryogenic gas cold-producing medium;
The second heat exchanger, make the described cryogenic gas cold-producing medium of the described controlled temperature of discharging from described First Heat Exchanger and circulating path touring thermophore carry out each other heat exchange; With
The second controlling organization, the difference between the temperature based on described thermophore is detected and the target temperature of this thermophore, adjusts the amount of described gas, thus the target temperature that is described thermophore by the temperature control of described thermophore.
8. a low-temp reaction control device, possesses:
Thermophore cooling device as claimed in claim 6 or thermophore cooling device as claimed in claim 7; With
Low-temp reaction groove, is constituted as the described thermophore that imports the described controlled temperature that circulates in described circulating path, thus by cooling the reactant liquor of reactive tank inside be adjusted into temperature required.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-223716 | 2011-10-11 | ||
| JP2011223716 | 2011-10-11 | ||
| PCT/JP2012/076315 WO2013054844A1 (en) | 2011-10-11 | 2012-10-11 | Low temperature gas supply device, heat transfer medium-cooling device, and low temperature reaction control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103874898A true CN103874898A (en) | 2014-06-18 |
| CN103874898B CN103874898B (en) | 2016-03-30 |
Family
ID=48081897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280048779.3A Expired - Fee Related CN103874898B (en) | 2011-10-11 | 2012-10-11 | Cryogenic gas feedway, thermophore cooling device and low-temp reaction control device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20140366575A1 (en) |
| JP (1) | JP5651246B2 (en) |
| CN (1) | CN103874898B (en) |
| SG (1) | SG11201400732RA (en) |
| WO (1) | WO2013054844A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482418A (en) * | 2015-08-28 | 2017-03-08 | 楚天科技股份有限公司 | Freeze dryer gas/liquid nitrogen refrigeration system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109550416B (en) * | 2018-12-15 | 2021-09-10 | 力合科技（湖南）股份有限公司 | Dynamic gas distribution and supply device |
| CN116422222B (en) * | 2023-06-13 | 2023-09-01 | 福建德尔科技股份有限公司 | Flow control system for automatically mixing fluorine gas and nitrogen gas |
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| DE102005004665A1 (en) * | 2005-02-02 | 2006-08-10 | Messer Group Gmbh | Method and device for filling pressure vessels with non-liquefied gases or gas mixtures |
| US8474273B2 (en) * | 2009-10-29 | 2013-07-02 | Air Products And Chemicals, Inc. | Apparatus and method for providing a temperature-controlled gas |
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2012
- 2012-10-11 JP JP2013538566A patent/JP5651246B2/en active Active
- 2012-10-11 WO PCT/JP2012/076315 patent/WO2013054844A1/en active Application Filing
- 2012-10-11 SG SG11201400732RA patent/SG11201400732RA/en unknown
- 2012-10-11 CN CN201280048779.3A patent/CN103874898B/en not_active Expired - Fee Related
- 2012-10-11 US US14/345,523 patent/US20140366575A1/en not_active Abandoned
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|---|---|---|---|---|
| JPH0747251A (en) * | 1993-08-06 | 1995-02-21 | Toho Asechiren Kk | Generation of mixed gas |
| JPH07180936A (en) * | 1993-11-01 | 1995-07-18 | Boc Group Inc:The | Low-temperature heat-exchange system and freeze drier |
| JPH09166376A (en) * | 1995-09-15 | 1997-06-24 | L'air Liquide | Refrigeration system and cooling method |
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| CN106482418A (en) * | 2015-08-28 | 2017-03-08 | 楚天科技股份有限公司 | Freeze dryer gas/liquid nitrogen refrigeration system |
Also Published As
| Publication number | Publication date |
|---|---|
| SG11201400732RA (en) | 2014-09-26 |
| US20140366575A1 (en) | 2014-12-18 |
| CN103874898B (en) | 2016-03-30 |
| JP5651246B2 (en) | 2015-01-07 |
| WO2013054844A1 (en) | 2013-04-18 |
| JPWO2013054844A1 (en) | 2015-03-30 |
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