CN204469256U - A kind of safe and efficient environment-friendly type distilling apparatus - Google Patents
A kind of safe and efficient environment-friendly type distilling apparatus Download PDFInfo
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- CN204469256U CN204469256U CN201520150146.4U CN201520150146U CN204469256U CN 204469256 U CN204469256 U CN 204469256U CN 201520150146 U CN201520150146 U CN 201520150146U CN 204469256 U CN204469256 U CN 204469256U
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Abstract
The utility model discloses a kind of safe and efficient environment-friendly type distilling apparatus, comprise distiller, heat-exchange system, solvent receiving slit, single-stage high-speed centrifugal vapour compression machine, vacuum buffer tank and without oily vertical type vacuum pump, distiller is connected with heat-exchange system by gas phase pipe, heat-exchange system is three grades of heat-exchange systems, it comprises first-class heat exchanger, secondary heat exchanger and three grades of heat exchangers, and each equipment is connected to form the loop of circulation distillation.The utility model is in the process of whole circulation distillation, system is in air-tight state, do not distill tail gas release, heat exchanger adopts multi-stage heat exchanger to arrange, relatively traditional distillation mode more efficient energy-saving, is easier to control, more environmental protection, run more steady, after instrument and meter for automation is set, can fully automatic operation be realized.While significantly improving solvent recovering rate, the security of distilling apparatus can be improved, and significantly reduces risk of environmental pollution.
Description
Technical field
The utility model belongs to technical field of chemical, specifically relates to a kind of safe and efficient environment-friendly type distilling apparatus.
Background technology
As everyone knows, the characteristic of Chemical Manufacture is inflammable, explosive, poisonous, the contour hazard property of corrosivity.Except " the dangerous technique of the Fifteenth National Congress " of " national security supervision general bureau is about the notice of dangerous chemical process catalogue announcing the supervision of first batch of emphasis " (the safety supervision house steward three (2009) No. 116) that issue except State Administration of Quality and Technical Supervision 2009, chemical industry distilling apparatus is also listed in the object of emphasis supervision by various places safety manufacture supervising department.Distilling apparatus in actual Chemical Manufacture is also the device of Frequent Accidents, particularly solvent recovery, mother liquor recovering device, because the component of raffinate after solvent recovery is very complicated, significantly improves the danger of device in still-process after heating.The higher then danger of solvent recovering rate is larger, if reduce solvent recovering rate, vinasse significantly increases, and while enterprise brings economic loss, also brings problem and the risk of environmental pollution of raffinate process.
Summary of the invention
Technical problem to be solved in the utility model is just to provide a kind of safe and efficient environment-friendly type distilling apparatus, while significantly improving solvent recovering rate, can improve the security of distilling apparatus, and significantly reduce risk of environmental pollution.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of safe and efficient environment-friendly type distilling apparatus, comprise distiller, heat-exchange system, solvent receiving slit, single-stage high-speed centrifugal vapour compression machine, vacuum buffer tank and without oily vertical type vacuum pump, described distiller is connected with heat-exchange system by gas phase pipe, described heat-exchange system is three grades of heat-exchange systems, it comprises first-class heat exchanger, secondary heat exchanger and three grades of heat exchangers, described first-class heat exchanger is provided with one-level vapour liquid separator, described secondary heat exchanger is chilled brine condenser, described chilled brine condenser is provided with secondary vapour liquid separator, described three grades of heat exchangers are hot-water heater, described one-level vapour liquid separator is all connected with the inlet of solvent receiving slit with the liquid outlet of secondary vapour liquid separator, the gas outlet of described one-level vapour liquid separator is connected with the air inlet of single-stage high-speed centrifugal vapour compression machine, the gas outlet of described single-stage high-speed centrifugal vapour compression machine is all connected with the air inlet of vacuum buffer tank with the gas outlet of secondary vapour liquid separator, the gas outlet of described vacuum buffer tank is connected with the air inlet without oily vertical type vacuum pump, the described gas outlet without oily vertical type vacuum pump is connected with device for absorbing tail gas or incinerator.
Distiller is the distil container of distillation still or other form band intensification cooling functions, distiller is provided with nitrogen interface, gas phase pipe, nitrogen return pipe and other safety attachments, adopt nitrogen can reach the object of circulation distillation as systemic circulation medium, also effectively can completely cut off air thus significantly improve the security of device.Distilling apparatus is in the process of whole circulation distillation, and system is in air-tight state, does not distill tail gas release, relatively traditional distillation mode, distilling apparatus of the present utility model more environmental protection.Also other inert gases can be selected according to process conditions.Heat exchanger adopts multi-stage heat exchanger to arrange, and regulates rear stage heat exchanger to be in negative pressure state to distiller through vacuum control valve, significantly reduces solvent boiling point and makes distillation more energy-conservation.And secondary heat exchanger is in barotropic state, improve the boiling point of solvent, make the easier condensation liquefaction of solvent.The distillation mode more efficient energy-saving that this distilling apparatus is relatively traditional, is easier to control, and runs more steady, can realize fully automatic operation after arranging instrument and meter for automation.In addition, also multi-stage heat exchanger can be increased according to process conditions, also can multi-stage heat exchanger connected mode be selected for parallel connection according to process conditions or be connected in series mode, also can use other heat transferring mediums according to process conditions, such as recirculated water, freezing liquid, hot water, steam, heat conduction wet goods.
Distilling apparatus of the present utility model, before distillation, by the nitrogen valve on distiller to nitrogen injection in system, opens single-stage high-speed centrifugal vapour compression machine, nitrogen circulation in beginning system subsequently, then opens distiller and three grades of heat exchanger heating.After solvent evaporation with stream of nitrogen gas through first-class heat exchanger time condensation under from flowing to one-level vapour liquid separator, liquid phase through tapping valve to solvent recovery receiving slit, the solvent gas phase component of non-total condensation with stream of nitrogen gas through single-stage high-speed centrifugal compressor, again cool to gas buffer tank, to secondary heat exchanger, liquid phase is through tapping valve to solvent receiving slit, and a small amount of remaining gas phase enters distiller through nitrogen reflux pipe by bottom after the heating of three grades of heat exchangers.The control valve of vacuum can be regulated to carry out vacuum in regulating system according to process conditions condition in circulation still-process, also can regulate distiller and three grades of heat exchanger heat exchange medium temperatures according to process conditions thus control distillation speed.After can selecting to close single-stage high-speed centrifugal compressor according to process conditions after circulation distillation terminates, open and without oily vertical type vacuum pump, the solvent remained in distiller is steamed to the greatest extent.
Preferably, described distiller is provided with nitrogen return pipe, and described nitrogen return pipe is provided with check-valves.Nitrogen return pipe arranges check-valves and inserts distiller inner bottom part, nitrogen return pipe adopts plug-type design, can make device in running, the nitrogen be heated is entered with lower bottom part by distiller liquid level, solvent also plays the effect of stirring while being heated, solvent is heated evenly, heat transfer efficiency is higher.
Preferably, described one-level vapour liquid separator and secondary vapour liquid separator are equipped with liquid level gauge and tapping valve.Automatically can control liquid level, liquid level sensor and tapping valve also can be adopted to link and realize liquid automatic control.
Preferably, be also provided with gas buffer tank between the gas outlet of described vacuum buffer tank and the air inlet without oily vertical type vacuum pump, the air inlet of described gas buffer tank is provided with vacuum breaker, and described vacuum breaker is used for regulating system vacuum.
The safe and efficient environment-friendly type distilling apparatus of one of the present utility model, in the process of whole circulation distillation, system is in air-tight state, do not distill tail gas release, heat exchanger adopts multi-stage heat exchanger to arrange, relatively traditional distillation mode more efficient energy-saving, be easier to control, more environmental protection, runs more steady, can realize fully automatic operation after arranging instrument and meter for automation.While significantly improving solvent recovering rate, the security of distilling apparatus can be improved, and significantly reduces risk of environmental pollution.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Fig. 1 is the structural representation of a kind of safe and efficient environment-friendly type distilling apparatus embodiment 1 of the utility model.
Detailed description of the invention
As shown in Figure 1, for the preferred embodiment 1 of a kind of safe and efficient environment-friendly type distilling apparatus of the utility model, comprise distiller 1, heat-exchange system, solvent receiving slit 6, single-stage high-speed centrifugal vapour compression machine 7, vacuum buffer tank 8 and without oily vertical type vacuum pump 9, described distiller 1 is connected with heat-exchange system by gas phase pipe, described heat-exchange system is three grades of heat-exchange systems, it comprises first-class heat exchanger 2, secondary heat exchanger 4 and three grades of heat exchangers 5, described first-class heat exchanger 2 is provided with one-level vapour liquid separator 21, described secondary heat exchanger 4 is chilled brine condenser, described chilled brine condenser is provided with secondary vapour liquid separator 41, described three grades of heat exchangers 5 are hot-water heater, described one-level vapour liquid separator 21 is all connected with the inlet of solvent receiving slit 6 with the liquid outlet of secondary vapour liquid separator 41, the gas outlet of described one-level vapour liquid separator 21 is connected with the air inlet of single-stage high-speed centrifugal vapour compression machine 7, the gas outlet of described single-stage high-speed centrifugal vapour compression machine 7 is all connected with the air inlet of vacuum buffer tank 8 with the gas outlet of secondary vapour liquid separator 41, the gas outlet of described vacuum buffer tank 8 is connected with the air inlet without oily vertical type vacuum pump 9, the described gas outlet without oily vertical type vacuum pump 9 is connected with device for absorbing tail gas or incinerator.
Distiller 1 is the distil container of distillation still or other form band intensification cooling functions, distiller 1 is provided with nitrogen interface, gas phase pipe, nitrogen return pipe 11 and other safety attachments, adopt nitrogen can reach the object of circulation distillation as systemic circulation medium, also effectively can completely cut off air thus significantly improve the security of device.Distilling apparatus is in the process of whole circulation distillation, and system is in air-tight state, does not distill tail gas release, relatively traditional distillation mode, distilling apparatus of the present utility model more environmental protection.Also other inert gases can be selected according to process conditions.Heat exchanger adopts multi-stage heat exchanger to arrange, and regulates rear stage heat exchanger 2 to distiller 1 to be in negative pressure state, significantly reduce solvent boiling point and make distillation more energy-conservation through vacuum control valve.And secondary heat exchanger 4 is in barotropic state, improve the boiling point of solvent, make the easier condensation liquefaction of solvent.The distillation mode more efficient energy-saving that this distilling apparatus is relatively traditional, is easier to control, and runs more steady, can realize fully automatic operation after arranging instrument and meter for automation.In addition, also multi-stage heat exchanger can be increased according to process conditions, also can multi-stage heat exchanger connected mode be selected for parallel connection according to process conditions or be connected in series mode, also can use other heat transferring mediums according to process conditions, such as recirculated water, freezing liquid, hot water, steam, heat conduction wet goods.
Distilling apparatus of the present utility model, before distillation, by the nitrogen valve on distiller 1 to nitrogen injection in system, opens single-stage high-speed centrifugal vapour compression machine 7, nitrogen circulation in beginning system subsequently, then opens distiller 1 and three grades of heat exchangers 5 heat.After solvent evaporation with stream of nitrogen gas through first-class heat exchanger 2 time condensation under from flowing to one-level vapour liquid separator 21, liquid phase through tapping valve to solvent recovery receiving slit 6, the solvent gas phase component of non-total condensation with stream of nitrogen gas through single-stage high-speed centrifugal compressor 7, again cool to gas buffer tank 3, to secondary heat exchanger 4, liquid phase is through tapping valve to solvent receiving slit 6, and a small amount of remaining gas phase enters distiller 1 through nitrogen reflux pipe 11 by bottom after three grades of heat exchangers 5 heat.The control valve of vacuum can be regulated to carry out vacuum in regulating system according to process conditions condition in circulation still-process, also can regulate distiller 1 and three grades of heat exchanger 5 heat exchange medium temperatures according to process conditions thus control distillation speed.After can selecting to close single-stage high-speed centrifugal compressor 7 according to process conditions after circulation distillation terminates, open and without oily vertical type vacuum pump 9, solvent residual in distiller 1 is steamed to the greatest extent.
Described distiller 1 is provided with nitrogen return pipe 11, and described nitrogen return pipe 11 is provided with check-valves.Nitrogen return pipe 11 arranges check-valves and inserts distiller 1 inner bottom part, nitrogen return pipe 11 adopts plug-type design, can make device in running, the nitrogen be heated is entered with lower bottom part by distiller 1 liquid level, solvent also plays the effect of stirring while being heated, solvent is heated evenly, heat transfer efficiency is higher.
Described one-level vapour liquid separator 21 and secondary vapour liquid separator 41 are equipped with liquid level gauge and tapping valve.Automatically can control liquid level, liquid level sensor and tapping valve also can be adopted to link and realize liquid automatic control.
Also be provided with gas buffer tank 3 between the gas outlet of described vacuum buffer tank 8 and the air inlet without oily vertical type vacuum pump 9, the air inlet of described gas buffer tank 3 is provided with vacuum breaker, and described vacuum breaker is used for regulating system vacuum.
The foregoing is only specific embodiment of the utility model, but technical characteristic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and the change done or modification are all encompassed among the scope of the claims of the present utility model.
Claims (4)
1. a safe and efficient environment-friendly type distilling apparatus, it is characterized in that: comprise distiller (1), heat-exchange system, solvent receiving slit (6), single-stage high-speed centrifugal vapour compression machine (7), vacuum buffer tank (8) and without oily vertical type vacuum pump (9), described distiller (1) is connected with heat-exchange system by gas phase pipe, described heat-exchange system is three grades of heat-exchange systems, it comprises first-class heat exchanger (2), secondary heat exchanger (4) and three grades of heat exchangers (5), described first-class heat exchanger (2) is provided with one-level vapour liquid separator (21), described secondary heat exchanger (4) is chilled brine condenser, described chilled brine condenser is provided with secondary vapour liquid separator (41), described three grades of heat exchangers (5) are hot-water heater, described one-level vapour liquid separator (21) is all connected with the inlet of solvent receiving slit (6) with the liquid outlet of secondary vapour liquid separator (41), the gas outlet of described one-level vapour liquid separator (21) is connected with the air inlet of single-stage high-speed centrifugal vapour compression machine (7), the gas outlet of described single-stage high-speed centrifugal vapour compression machine (7) is all connected with the air inlet of vacuum buffer tank (8) with the gas outlet of secondary vapour liquid separator (41), the gas outlet of described vacuum buffer tank (8) is connected with the air inlet without oily vertical type vacuum pump (9), the described gas outlet without oily vertical type vacuum pump (9) is connected with device for absorbing tail gas or incinerator.
2. the safe and efficient environment-friendly type distilling apparatus of one according to claim 1, is characterized in that: described distiller (1) is provided with nitrogen return pipe (11), described nitrogen return pipe (11) is provided with check-valves.
3. the safe and efficient environment-friendly type distilling apparatus of one according to claim 1, is characterized in that: described one-level vapour liquid separator (21) and secondary vapour liquid separator (41) are equipped with liquid level gauge and tapping valve.
4. the safe and efficient environment-friendly type distilling apparatus of one according to claim 1, it is characterized in that: between the gas outlet of described vacuum buffer tank (8) and the air inlet without oily vertical type vacuum pump (9), be also provided with gas buffer tank (3), the air inlet of described gas buffer tank (3) is provided with vacuum breaker, and described vacuum breaker is used for regulating system vacuum.
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| CN201520150146.4U CN204469256U (en) | 2015-03-17 | 2015-03-17 | A kind of safe and efficient environment-friendly type distilling apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104971511A (en) * | 2015-03-17 | 2015-10-14 | 浙江中山化工集团股份有限公司 | Safe, highly-efficient and environment-friendly distillation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104971511A (en) * | 2015-03-17 | 2015-10-14 | 浙江中山化工集团股份有限公司 | Safe, highly-efficient and environment-friendly distillation device |
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