CN204421409U - The direct evaporative freezing device that within a kind of subzero 40 degrees Celsius, reaction condition controls - Google Patents
The direct evaporative freezing device that within a kind of subzero 40 degrees Celsius, reaction condition controls Download PDFInfo
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- CN204421409U CN204421409U CN201420770515.5U CN201420770515U CN204421409U CN 204421409 U CN204421409 U CN 204421409U CN 201420770515 U CN201420770515 U CN 201420770515U CN 204421409 U CN204421409 U CN 204421409U
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- retort
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Abstract
The utility model discloses the direct evaporative freezing device that within a kind of subzero 40 degrees Celsius, reaction condition controls.This device is made up of compressor, oil eliminator, condenser, choke valve, jacketed evaporator, control sensor critical piece.The principle utilizing refrigerant vapor to absorb amount of heat carries out work, realizes the kind of refrigeration cycle of compression → condensation → expansion → evaporation endothermic → compression.This device adopts cold-producing medium directly in the cooling of reacting kettle jacketing evaporation realization response system, for alternative conventional method, the danger that organic refrigerant is inflammable and explosive can be eliminated, also effectively solve refrigeration system cold energy and lose large problem, be more suitable for large-scale industrial production application.
Description
Technical field
The utility model is used for the production of pharmaceutical chemistry synthesis, is a kind of process units for controlling synthetic reaction under cryogenic.
Background technology
Along with the fast development of medical science, new medicine and medicine synthesis technique constantly occur.But corresponding equipment development relatively lags behind, make many new technologies well can not realize suitability for industrialized production application.The device that subzero 40 degrees centigrade reaction conditions control at present normally adopts liquid nitrogen through refrigerant displacement or the direct mode cooled, and there is not yet with the report of chiller refrigerants in the direct evaporation mode cooling of retort chuck.
Summary of the invention
The utility model adopts a kind of device, for the control of reaction condition within subzero 40 degrees Celsius.Reach 40 degrees below zero reaction condition, general freezer salt solution cannot meet the demands.Normally adopt organic solvent as refrigerant (as ethylene glycol etc.) liquid nitrogen or the method coordinating super low temperature refrigeration agent refrigerator.But such method has some problems, mainly contain some: first, organic solvent is combustible and explosive articles mostly, and a large amount of use has certain danger; Secondly, according to refrigerator, then the process need from evaporimeter to reaction controlling is through 2 heat exchanges, and each exchange process all needs certain temperature difference, make the cooling effect of this sample loading mode poor, corresponding Cooling capacity exchanging be reached and must adopt larger refrigerator; Be exactly that such apparatus system is more in addition, add the kinetic energy that refrigerant is carried, cold energy loss is larger.This device adopts cold-producing medium directly to enter reactor cooling, for alternative conventional method, can solve problem above well.
The utility model discloses following technology contents for achieving the above object:
The direct evaporative freezing device that within subzero 40 degrees Celsius, reaction condition controls, comprises retort jacketed evaporator 7, retort inner bag 9, compressor 1, oil eliminator 3, condenser 2, choke valve 8, sewage draining exit 6, the cooling water inlet 5 of condenser 2, the coolant outlet 4 as evaporimeter; Wherein said retort jacketed evaporator 7 and retort inner bag 9 are integral device, and retort jacketed evaporator 7 connects refrigeration system, and retort inner bag 9 is reaction systems, install the annex such as stirring 10 grade that reaction system is required; Compressor 1, oil eliminator 3 and condenser 2 are Condensing units of a set of combination, can combine installation, to reduce space, it is characterized in that when equipment is not too large:
The jacketed evaporator 7 of a, retort is as a part for freezing unit, after cold-producing medium is compressed into high-temperature gas by compressor 1, Normal Atmospheric Temperature Liquid is cooled to through condenser 2, retort jacketed evaporator 7 is directly entered again after choke valve 8 reduces pressure, and jacketed evaporator absorption reaction system heat and after flashing to gas, suck compressor compression cycle again.
The form of b, compressor 1 and the type of cooling of condenser 2 can according to on-the-spot physical condition flexible Application; When adopting the compressor of single machine two-stage, the recirculated water that factory usually can be adopted the most general is as the cooling water of condenser 2; During according to single-stage compressor, use general freezer salt solution better as the cooling water effect of condenser;
The specification of c, retort and Condensing units are suitably supporting, and time the refrigerating capacity of usual Condensing units is slightly bigger, the use surplus of retort is larger, can control refrigerating capacity by shutting down;
D, apparatus system can pass through temperature, pressure, flow, timer realize automatically or semiautomatic control; Different sensor accuracies is adopted to realize corresponding precision controlling.
Cold-producing medium described in the utility model directly enters retort jacketed evaporator 7, its refrigerant inlet is the top at jacketed evaporator, refrigerant liquid after throttling enters after jacketed evaporator due to Action of Gravity Field, fall to jacketed evaporator bottom and evaporate, according to different refrigerating capacity requirements, can be formed in jacketed evaporator and evaporate liquid level accordingly, cold-producing medium comprises the refrigerant gas entering jacketed evaporator with gaseous state and enters compressor 1 import from superposed outlet discharge, outlet and the mutual opposite of import are arranged, separated by retort inner bag, there is the path of hemicycle, what arranging like this can ensure cold-producing medium can not walk short circuit.Multipurpose sewage draining exit 6 is set bottom jacketed evaporator, may be used for oil return, blowdown.
Described cold-producing medium is current conventional inorganic compound, hydrocarbon, fluorine Lyons and azeotropic (non-azeotrope) mixture refrigerant.What cold-producing medium of concrete use depends on that the evaporating temperature that needs provide and compressor 1 are suitable for kind.Filling of cold-producing medium can use the angle valve passage (when gaseous state fills) of compressor or the angle valve passage (when liquid state fills) of condenser.
When described condenser 2 cooling water uses chilled brine, condenser tries not to use copper material, because chilled brine has certain corrosivity to copper material; If the chilled brine of ammonia machine, then prohibit the use.Use after now can being replaced as non-corrosiveness refrigerant by heat exchanger.Displacement apparatus is as Fig. 2: cool brine returns 12, cool brine comes 13 to come 14 by heat exchanger and refrigerant, refrigerant goes freezing unit 16 to carry out heat exchange, and refrigerant sends into heat exchanger 11 by refrigerant circulation pump 15, and cooled refrigerant 16 sends into compressor bank.
The described retort jacketed evaporator 7 as evaporimeter makes according to the requirement of the cold-producing medium used, the design pressure of jacketed evaporator 7 should leave enough surpluses, the material of equipment adopts stainless steel as far as possible, as USU304, USU316 etc., also need to consider that reaction system is to material requirement simultaneously.
Described choke valve 8 refers to the expansion valve for automatically regulating open degree, comprises inner equilibrium film heating power expansion valve, outer Balanced films heating power expansion valve or inner equilibrium bellows-type heating power expansion valve, outer balance bellows heating power expansion valve and electric expansion valve.
Described sensor controls, and refer to the control by the control realization reaction system to Condensing units startup-shutdown, can be realized the coupling of freezing unit and the large width of reaction system by this control, equipment applicability obtains very large expansion.The reaction condition that the utility model is applicable within subzero 40 degrees Celsius controls, and temperature control scope, from room temperature to subzero 40 degrees Celsius, is equipped with the lower cold-producing medium of the evaporating temperatures such as R13 according to single machine compression with double stage machine, can expand downwards to subzero 60 degrees centigrade.
Evaporimeter of the present utility model is a part for refrigerator group system, forms a complete freezing unit with other parts such as compressor 1, condensers 2.Therefore the parameter designing of retort jacketed evaporator 7 should match with the parameter of unit, and only in refrigerating capacity index, Condensing units can be more slightly bigger than evaporimeter.Retort is except outside the Pass jacketed evaporator 7 phase, and the design of other parts designs according to processing parameter.
Installation of the present utility model is consistent with common freezing unit.Condensing units and retort (evaporimeter) are installed nearby, need to meet anti-explosion safety simultaneously; The electrical device of isolating if necessary should effectively be isolated, and can arrange divider wall and isolate.
The utility model can carry out semi-automatic or Non-follow control automatically by the parameters such as temperature, pressure, time and respective sensor.Operation sequence and method and common freezing unit basically identical.The loop condition of cold-producing medium and lubricating oil also with common freezing unit without obvious difference.
The utility model mainly completes following work:
One. the utility model combines reaction system and refrigeration system, making it becomes an entirety, the efficiency of refrigeration system is performed to ultimate attainment.The chuck of retort is as the evaporimeter circulated, and the inner bag of splendid attire reactant liquor is immersed in the low-temperature refrigerant of jacketed evaporator.The heat of the direct absorption reaction liquid of cold-producing medium and evaporating, this mode efficiency is high, good cooling effect.
Two. the utility model is made up of compressor 1, oil eliminator 3, condenser 2, choke valve 8, jacketed evaporator 7, control sensor critical piece.Operation principle utilizes refrigerant vapor to absorb the physical property of amount of heat to carry out work, realizes the kind of refrigeration cycle of the second compression of compression → condensation → expansion → evaporation endothermic → again.Its course of work: be collapsed into high temperature, gases at high pressure by driven by power after the gaseous refrigerant inhalation machine compression of low temperature, the highly pressurised liquid becoming normal temperature after lubricating oil after condenser 2 is by recirculated water (or cool brine) cooling down is isolated through oil eliminator 3, in evaporimeter, absorb a large amount of heat energy through choke valve 8 expenditure and pressure and evaporate again and become low temperature, low-pressure gas, be inhaled into compressor 1 compression again and enter next circulation, repetitive cycling like this reaches the object of cooling.The fuel tank that the isolated lubricating oil of oil eliminator 3 utilizes pressure reduction to be directly pressed into compressor recycles.Control sensor and the real time data of reaction system directly can be sent to refrigeration system, automatically controlled by the parameter pre-set; Also can carry out Artificial Control according to the requirement of reaction system simultaneously.
Three. key point of the present utility model is the evaporimeter of the jacketed evaporator of retort as freezing unit and the integrated setting of reaction system and freezing unit.The temperature control chuck of reaction system, as the evaporimeter of refrigeration unit, not only avoids and conducts by refrigerant a large amount of cold loss of energy caused, and also because decreasing link, reduces the requirement of the evaporating temperature to cold-producing medium.
Common refrigeration system in the heat exchanging process of refrigerant due to heat radiation and refrigerant circulation power can lose part cold, when freezing unit is operated in close to limiting condition, the loss of this cold can consume most of power of freezing unit, make the refrigeration work consumption of reaction system not enough, affect the control of response parameter.The utility model does not have heat radiation and the power loss of refrigerant, can the usefulness of the freezing unit of maximized performance.
In the system that refrigerant exchanges, the heat exchange of the evaporating temperature of freezing unit and the heat transfer of refrigerant and refrigerant and reaction system all needs certain temperature difference, to ensure that certain exchange rate controls to the temperature meeting reaction system.The temperature difference of the larger needs of heat exchange amount is also higher, and the temperature difference that a usual heat exchange needs is more than 15 degree.So the exchange process of 2 times just needs the temperature difference of 30 degree, if the control temperature of reaction system is 40 degrees below zero Celsius, so the evaporating temperature of cold-producing medium just needs to reach subzero 70 degree Celsius.And the evaporating temperature of the good cold-producing medium of Performance Ratio reaches less than this temperature now.The utility model directly in the evaporation of retort jacketed evaporator, eliminates an exchange process, reduces the evaporating temperature of cold-producing medium and the temperature difference of reaction system control, leaves leeway to selecting of cold-producing medium.
Four. the utility model commonly uses major parameter:
Five. the major function of each critical piece
Compressor 1: the gas refrigerant gas of low-temp low-pressure being compressed into HTHP.
Oil eliminator 3: the compressor lubricant oil that the cryogen gaseous with HTHP is taken out of is separated and pushed back compressor sump and reuses.
Condenser 2: the refrigerant gas of HTHP, after having water quench, is condensed into highly pressurised liquid.
Choke valve 8: with adjustment, highly pressurised liquid is reduced pressure into low pressure by flow-control and make it to absorb heat and evaporating, control the liquid level of evaporimeter simultaneously.
Jacketed evaporator 7 evaporimeter: the heat of refrigerant liquid absorption reaction system in evaporimeter of low pressure and evaporate the gas becoming low-temp low-pressure, is contracted by compressor again suction pressure, enters next circulation.
Accompanying drawing illustrates:
Fig. 1 is the direct evaporative freezing device schematic diagram that within subzero 40 degrees Celsius, reaction condition controls;
Fig. 2 is refrigerant displacement apparatus schematic diagram;
Wherein
1, compressor 2, condenser 3, oil eliminator 4, coolant outlet
5, cooling water inlet 6, sewage draining exit 7, jacketed evaporator 8, choke valve
9, retort inner bag 10, stir 11, heat exchanger 12, cool brine return 13, cool brine comes
14, refrigerant comes 15, refrigerant circulation pump 16, refrigerant remove freezing unit.
Detailed description of the invention
Referring to drawings and Examples, the utility model is described in detail.Following each embodiment only for illustration of
The utility model and being not limitation of the utility model.
Embodiment 1
The direct evaporative freezing device that within subzero 40 degrees Celsius, reaction condition controls, comprises retort jacketed evaporator 7, retort inner bag 9, compressor 1, oil eliminator 3, condenser 2, choke valve 8, sewage draining exit 6, the cooling water inlet 5 of condenser 2, the coolant outlet 4 as evaporimeter; Wherein said retort jacketed evaporator and retort inner bag 9 are integral device, and retort jacketed evaporator 7 connects refrigeration system, and retort inner bag 9 is reaction systems, install the indispensable annex such as stirring 10, sealing that reaction system is required; Compressor 1, oil eliminator 3 and condenser 2 are Condensing units of a set of combination, combine installation, to reduce space, it is characterized in that:
The jacketed evaporator of a, retort is as a part for freezing unit, after cold-producing medium becomes high temperature, gases at high pressure by compressor compresses, normal temperature high voltage liquid is cooled to through condenser 2, retort jacketed evaporator is directly entered again after choke valve 8 reduces pressure, and jacketed evaporator absorption reaction system heat and after flashing to gas, suck compressor compression cycle again.
B, compressor adopt the compressor of single machine two-stage, and the employing recirculated water of condenser 2 is as the cooling water of condenser;
The refrigerating capacity larger than the heat exchanger efficiency of retort 20% of c, Condensing units;
D, apparatus system realize semiautomatic control by temperature sensor; Control accuracy ± 2 DEG C;
Embodiment 2
The direct evaporative freezing device that within subzero 40 degrees Celsius of a kind of 500L retort specification, reaction condition controls.
1) nominal volume 500L in retort tank, inner bag diameter 800CM, heat exchange area 2.5 square meter, USU304 material.
2) jacketed evaporator 7 evaporator capacity 120L, external diameter 900CM, USU304 material.
3) compressor 1 power 18.5KW, single-stage compressor.
4) condenser 2 heat exchange area 6 square meter, carbon steel material, circulating water, water temperature 10 ~ 40 DEG C.
Embodiment 3
The direct evaporative freezing device that within subzero 40 degrees Celsius of a kind of 1000L retort specification, reaction condition controls.
1) nominal volume 1000L in retort tank, inner bag diameter 1200CM, heat exchange area 4.5 square meter, USU304 material.
2) jacketed evaporator 7 evaporator capacity 200L, external diameter 1300CM, USU304 material.
3) compressor 1 power 30KW, single-stage compressor.
4) condenser 2 heat exchange area 8 square meter, carbon steel material, cool brine cools, water temperature-15 ~ 0 DEG C.
Embodiment 4
The direct evaporative freezing device that within subzero 40 degrees Celsius of a kind of 500L retort specification, reaction condition controls.
1) nominal volume 500L in retort tank, inner bag diameter 800CM, heat exchange area 2.5 square meter, USU304 material.
2) jacketed evaporator 7 evaporator capacity 120L, external diameter 900CM, USU304 material.
3) compressor 1 power 18.5KW, single-stage compressor.
4) condenser 2 heat exchange area 4 square meter, red copper material, cool brine changes the freezing liquid cooling of ethylene glycol but, cool brine temperature-15 ~ 0 DEG C.
Cool brine conversion ethylene glycol freezing liquid displacement heat exchanger 4 square meter stainless steel plate type heat exchanger.
Claims (7)
1. the direct evaporative freezing device that reaction condition controls within subzero 40 degrees Celsius, comprises retort jacketed evaporator (7), retort inner bag (9), compressor (1), oil eliminator (3), condenser (2), choke valve (8), sewage draining exit (6), the cooling water inlet (5) of condenser (2), the coolant outlet (4) as evaporimeter; Wherein said retort jacketed evaporator (7) and retort inner bag (9) are integral device, and retort jacketed evaporator (7) connects refrigeration system, and retort inner bag (9) is reaction system, is provided with the required stirring of reaction system (10); Compressor (1), oil eliminator (3) and condenser (2) are the Condensing units of a set of combination; It is characterized in that:
The jacketed evaporator (7) of a, retort is as a part for freezing unit, after cold-producing medium is compressed into high-temperature gas by compressor (1), Normal Atmospheric Temperature Liquid is cooled to through condenser (2), retort jacketed evaporator (7) is directly entered again after choke valve (8) decompression, and jacketed evaporator (7) absorption reaction system heat and after flashing to gas, suck compressor (1) compression cycle again;
The form of b, compressor (1) and the type of cooling of condenser (2) can be determined according to on-the-spot physical condition; When adopting compressor (1) of single machine two-stage, adopt recirculated water as the cooling water of condenser (2); During according to single-stage compressor (1), use general freezer salt solution as the cooling water of condenser (2);
The specification of c, retort and Condensing units are suitably supporting, and the refrigerating capacity of Condensing units is a bit larger tham the cold energy demand of retort, can control refrigerating capacity by shutting down;
D, apparatus system are realized automatically or semiautomatic control by temperature, pressure, flow, timer; Different sensor accuracies is adopted to realize corresponding precision controlling.
2. the direct evaporative freezing device that reaction condition controls within a kind of subzero 40 degrees Celsius according to claim 1, it is characterized in that cold-producing medium directly enters retort jacketed evaporator (7), its entrance is the top in jacketed evaporator (7), refrigerant liquid after throttling enters after jacketed evaporator (7) due to Action of Gravity Field, fall to jacketed evaporator (7) bottom and evaporate, according to different refrigerating capacity requirements, in jacketed evaporator (7), formation evaporates liquid level accordingly; The gas of cold-producing medium evaporation, comprises the gas on a small quantity entering jacketed evaporator with gaseous state and enters compressor (1) import from superposed outlet discharge; Outlet and the mutual opposite of import are arranged, and separated, have the path of hemicycle by retort inner bag; Jacketed evaporator (7) bottom arranges multipurpose sewage draining exit (6).
3. the direct evaporative freezing device that reaction condition controls within a kind of subzero 40 degrees Celsius according to claim 1, is characterized in that described cold-producing medium is inorganic compound, hydrocarbon, fluorine Lyons, azeotropic mixture refrigerant and non azeotropic mixture refragerant.
4. the direct evaporative freezing device that reaction condition controls within a kind of subzero 40 degrees Celsius according to claim 1, it is characterized in that described condenser (2) cooling water uses during chilled brine and be replaced as non-corrosiveness refrigerant by heat exchanger, cool brine returns (12), cool brine comes (13) and goes freezing unit (16) to carry out heat exchange by heat exchanger and refrigerant next (14), refrigerant, refrigerant (14) sends into heat exchanger (11) by refrigerant circulation pump (15), and cooled refrigerant (16) sends into compressor bank.
5. the direct evaporative freezing device that reaction condition controls within a kind of subzero 40 degrees Celsius according to claim 1, is characterized in that the material of described retort jacketed evaporator (7) equipment as evaporimeter adopts stainless steel.
6. the direct evaporative freezing device that reaction condition controls within a kind of subzero 40 degrees Celsius according to claim 1, it is characterized in that described choke valve (8) refers to the expansion valve for automatically regulating open degree, comprising inner equilibrium film heating power expansion valve, outer Balanced films heating power expansion valve, inner equilibrium bellows-type heating power expansion valve, outer balance bellows heating power expansion valve and electric expansion valve.
7. the direct evaporative freezing device that reaction condition controls within a kind of subzero 40 degrees Celsius according to claim 1, is characterized in that described sensor controls, refers to the control by the control realization reaction system to Condensing units startup-shutdown.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420770515.5U CN204421409U (en) | 2014-12-10 | 2014-12-10 | The direct evaporative freezing device that within a kind of subzero 40 degrees Celsius, reaction condition controls |
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| CN201420770515.5U CN204421409U (en) | 2014-12-10 | 2014-12-10 | The direct evaporative freezing device that within a kind of subzero 40 degrees Celsius, reaction condition controls |
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| CN204421409U true CN204421409U (en) | 2015-06-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110134162A (en) * | 2019-05-23 | 2019-08-16 | 上海友尹化工装备有限公司 | A kind of chemical reaction temperature automatic control system of ultralow temperature |
| CN115727559A (en) * | 2022-11-17 | 2023-03-03 | 安徽金禾实业股份有限公司 | A combination formula refrigeration ice maker for ketene dimer production |
-
2014
- 2014-12-10 CN CN201420770515.5U patent/CN204421409U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110134162A (en) * | 2019-05-23 | 2019-08-16 | 上海友尹化工装备有限公司 | A kind of chemical reaction temperature automatic control system of ultralow temperature |
| CN110134162B (en) * | 2019-05-23 | 2024-01-16 | 上海友尹化工装备有限公司 | Ultralow-temperature automatic control system for chemical reaction temperature |
| CN115727559A (en) * | 2022-11-17 | 2023-03-03 | 安徽金禾实业股份有限公司 | A combination formula refrigeration ice maker for ketene dimer production |
| CN115727559B (en) * | 2022-11-17 | 2024-01-26 | 安徽金禾实业股份有限公司 | Combined type refrigerating ice machine for diketene production |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20191210 |