CN104759108B - Three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression - Google Patents
Three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression Download PDFInfo
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- CN104759108B CN104759108B CN201510124920.9A CN201510124920A CN104759108B CN 104759108 B CN104759108 B CN 104759108B CN 201510124920 A CN201510124920 A CN 201510124920A CN 104759108 B CN104759108 B CN 104759108B
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- 238000001704 evaporation Methods 0.000 title claims abstract description 82
- 239000007788 liquid Substances 0.000 title claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 230000005494 condensation Effects 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 239000010408 film Substances 0.000 claims description 55
- 238000000926 separation method Methods 0.000 claims description 34
- 239000012141 concentrate Substances 0.000 claims description 18
- 239000011552 falling film Substances 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 abstract description 25
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002918 waste heat Substances 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002829 reduced Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- 238000004166 bioassay Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003139 buffering Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000036961 partial Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000717 retained Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention provides a kind of three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression, it comprises original fluid container, original fluid container connects feed pump successively, condensed water preheater, after raw vapor preheater, be connected with integral type falling liquid film circulating and evaporating separator, form one-level circulating line and secondary circulating line, and there is second steam circulation pipe, B-grade condensation water circulating pipe and secondary fixed gas circulating line, realizing energy reclaims, the effect that vapor recycle is used, the present invention can meet the concentrated production requirement of continuous feed and discharge, stop and the circulation timei of material is shortened in the application of degree of depth inspissator greatly, the composition of the thermal sensitivity in solution of adequately protecting, adopt the waste heat of the pre-recuperation of heat condensed water of condensed water, adopt compressor to collect indirect steam, make indirect steam circulating-heating be evaporated material, greatly save the energy.
Description
Technical field
The present invention relates to a kind of continuous concentration system, be specially a kind of energy-conservation continuous concentration device, be i.e. the continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression.
Background technology
Concentrating is an important step during Chinese medicine is produced. And traditional concentrator is first material to be packed into evaporimeter, then make after equipment operation a period of time, in the time that solution circulation is concentrated to finite concentration, then opens discharging pump and discharge concentrate, again open inlet valve after emptying and pack stoste into Deng concentrate, repeat said process. This just makes production gap carry out producing continuously, has occurred the drawback that evaporation efficiency is low, production capacity is little, artificial intensity is large, cannot meet the demand of modern production. In addition, traditional evaporation concentration equipment conventionally need to be in equipment the circulating and evaporating long period, be heated oversize, large havoc the thermal sensitivity composition of feed liquid. And, the indirect steam that traditional concentrator normally produces evaporimeter and condensed water are directly discharged or are discharged after condensing plant condensation, the latent heat of indirect steam and the waste heat of condensed water are so not only wasted, waste the energy, also increase condensing plant condensation indirect steam and condensed water, waste the energy, not only increased investment but also not environmental protection and economy. For this reason, can be continuously gentle to realize material concentrated, and inspissator that again can Low Temperature Difference evaporation is most important for improving the quality of products.
As the publication number Chinese patent economic benefits and social benefits falling liquid film MVP vapo(u)rization system that is CN104307195A, it adopts the mode of economic benefits and social benefits falling film evaporation, adopt twice concentrate discharge, use twice steam and condensed water, increase greatly the quantity of equipment, the waste heat of simultaneously having wasted indirect steam and condensed water, causes energy waste, can not realize quantity-produced demand simultaneously.
Summary of the invention
The object of the invention is: a kind of continuous feed, discharging are provided and can save the energy and the continuous concentration device of rapid evaporation at a lower temperature.
The invention provides a kind of three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression, it comprises original fluid container, original fluid container connects feed pump successively, condensed water preheater, after raw vapor preheater, be connected with integral type falling liquid film circulating and evaporating separator, described integral type falling liquid film circulating and evaporating separator comprises one-level falling film heating device and primary separator, described one-level falling film heating device is divided into evaporation tube I and evaporation tube II, the bottom of described primary separator is divided into separation chamber's I and separation chamber's II, described separation chamber I and II upper end, separation chamber are communicated with, the bottom of described separation chamber I is communicated with the one-level charging aperture of integral type falling liquid film circulating and evaporating separator by one-level circulating pump, form one-level circulating line, the bottom of described separation chamber II is communicated with the secondary charging aperture of integral type falling liquid film circulating and evaporating separator by secondary circulating pump, form secondary circulating line,
Described secondary circulating line is connected with the degree of depth concentrator feed mouth of degree of depth inspissator, described degree of depth inspissator comprises three grades of falling film heating devices and three grades of separators, the bottom of described three grades of separators is communicated with degree of depth concentrator feed mouth by three grades of circulating pumps, form three grades of circulating lines, described three grades of circulating lines are provided with concentrate discharge nozzle;
System is provided with compressor, between itself and integral type falling liquid film circulating and evaporating separator and degree of depth inspissator, be provided with second steam circulating line, second steam circulating line is as follows: between the top of described primary separator and degree of depth inspissator, be provided with one-level secondary and go out jet chimney, the top of described three grades of separators is provided with secondary secondary and goes out jet chimney, secondary secondary goes out jet chimney end and is connected with compressor, between the one-level shell side of described compressor and integral type falling liquid film circulating and evaporating separator, be provided with one-level secondary and enter jet chimney, between the secondary shell side of described compressor and degree of depth inspissator, be provided with secondary secondary and enter jet chimney,
System is also provided with condensate water pot, between itself and integral type falling liquid film circulating and evaporating separator and degree of depth inspissator, be provided with B-grade condensation water circulating pipe, B-grade condensation water circulating pipe is as follows: between described condensate water pot and integral type falling liquid film circulating and evaporating separator, be provided with one-level condensed water discharge pipe road, between described condensate water pot and degree of depth inspissator, be provided with B-grade condensation water discharge pipe road, the bottom of described condensate water pot is connected with condensed water preheater by condensate pump, and described condensed water preheater is connected with condensed water discharge pipe road;
System is also provided with fixed gas cooler, knockout drum and vavuum pump, and between integral type falling liquid film circulating and evaporating separator and degree of depth inspissator, be provided with secondary fixed gas circulating line, secondary fixed gas circulating line is as follows: described fixed gas cooler one end is connected with knockout drum, the lower end of described knockout drum is connected with condensate water pot by secondary fixed gas equalizing main, described knockout drum upper end is connected with vavuum pump, between the other end of described fixed gas cooler and integral type falling liquid film circulating and evaporating separator, be provided with the one-level pipeline of finding time, between the other end of described fixed gas cooler and degree of depth inspissator, be provided with secondary evacuation tube, between condensate water pot and integral type falling liquid film circulating and evaporating separator, be provided with one-level fixed gas equalizing main, between condensate water pot and degree of depth inspissator, be provided with secondary fixed gas equalizing main.
The longitudinal central axis line of described primary separator is provided with baffle plate, and primary separator is divided into separation chamber's I and separation chamber's II by described baffle plate.
The vacuum degree control of described separation chamber I, separation chamber's II and three grades of separators is 20-85kpa.
The top of described evaporation tube I and evaporation tube II is respectively equipped with independently liquid distributor.
Concentrate discharge nozzle is provided with discharging flow meter.
Described condensed water preheater and raw vapor preheater are plate type heat exchanger, tubular heat exchanger or spiral tube exchanger.
Between described secondary circulating line and one-level circulating line, be provided with and turn material control valve.
Described compressor is high-speed centrifugal compressor, roots-type compressor, low-speed centrifugal vapour compression machine or screw vapour compression machine.
The compression temperature rise of described compressor is 6-23 DEG C.
The outlet conduit place of described three grades of circulating pumps is provided with densitometer, and described density is counted tuning-fork type or pressure type.
The beneficial effect of the invention is: the present invention can meet the concentrated production requirement of continuous feed and discharge; stop and the circulation timei of material is shortened in the application of degree of depth inspissator greatly; the composition of the thermal sensitivity in solution of adequately protecting; adopt the waste heat of the pre-recuperation of heat condensed water of condensed water; adopt compressor to collect indirect steam; make indirect steam circulating-heating be evaporated material, greatly save the energy.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the enlarged diagram at A place in Fig. 1.
Fig. 3 is the enlarged diagram at B place in Fig. 1.
Fig. 4 is the enlarged diagram at C place in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention is further illustrated:
As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the invention provides a kind of three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression, it comprises original fluid container 30, original fluid container 30 connects feed pump 31 successively, condensed water preheater 27, after raw vapor preheater 34, be connected with integral type falling liquid film circulating and evaporating separator 2, described integral type falling liquid film circulating and evaporating separator 2 comprises one-level falling film heating device 4 and primary separator 5, described one-level falling film heating device 4 is divided into evaporation tube I and evaporation tube II, the bottom of described primary separator 5 is divided into separation chamber's I 6 and separation chamber's II 7, described separation chamber I 6 and separation chamber's II 7 upper ends are communicated with, the bottom of described separation chamber I 6 is communicated with the one-level charging aperture 61 of integral type falling liquid film circulating and evaporating separator 2 by one-level circulating pump 13, form one-level circulating line, the bottom of described separation chamber II 7 is communicated with the secondary charging aperture 62 of integral type falling liquid film circulating and evaporating separator 2 by secondary circulating pump 16, form secondary circulating line,
First evaporator is start vaporizer in evaporation tube I, and the material concentrated through one-level overflows to secondary evaporimeter bottom by the dividing plate of separation chamber's I bottom, then is that evaporation tube II is further evaporated by secondary evaporimeter. After double flash evaporation, the concentration of material can improve 7-8 doubly.
Described secondary circulating line is connected with the degree of depth concentrator feed mouth 63 of degree of depth inspissator 3, described degree of depth inspissator 3 comprises three grades of falling film heating devices 9 and three grades of separators 10, the bottom of described three grades of separators 10 is communicated with degree of depth concentrator feed mouth 63 by three grades of circulating pumps 20, form three grades of circulating lines, the discharging opening that described three grades of circulating lines are provided with 22, three grades of circulating pumps 20 of concentrate discharge nozzle is connected with the final storage tank of concentrate by concentrate discharge nozzle 22.
Material after secondary is concentrated starts to turn material to three grades of falling film heating devices 9 by the valve on degree of depth concentrator feed pipe 18 again, in degree of depth inspissator, the concentration of material can reach setting value, again by after densitometer 58 detection assay, by the continuous discharge of concentrate discharge nozzle 22.
System is provided with compressor 1, between itself and integral type falling liquid film circulating and evaporating separator 2 and degree of depth inspissator 3, be provided with second steam circulating line, second steam circulating line is as follows: between the top of described primary separator 5 and degree of depth inspissator, be provided with one-level secondary and go out jet chimney 52, the top of described three grades of separators 10 is provided with secondary secondary and goes out jet chimney 53, secondary secondary goes out jet chimney 53 ends and is connected with compressor 1, between the one-level shell side 8 of described compressor 1 and integral type falling liquid film circulating and evaporating separator 2, be provided with one-level secondary and enter jet chimney 54, between described compressor 1 and the secondary shell side 11 of degree of depth inspissator, be provided with secondary secondary and enter jet chimney 55,
Indirect steam cyclic process of the present invention is achieved in that described indirect steam is to come from the top of primary separator 5 of integrated evaporator and the top of three grades of separators 10 of degree of depth inspissator, this two parts indirect steam (temperature is at 50-90 DEG C) pools together and enters into compressor 1, raise by temperature and pressure after compressor 1 compression, temperature can promote 6-22 DEG C, can select the different temperature difference according to different materials, then compressed indirect steam temperature can reach 58-112 DEG C, then this part steam is utilized again and goes respectively the shell side of integral type falling liquid film circulating and evaporating separator 2 and degree of depth falling film condenser 3 to continue the material that heating is concentrated. steam condensate (SC) is pooled to condensate water pot 25, then gets by condensate pump 26.
System is also provided with condensate water pot 25, between itself and integral type falling liquid film circulating and evaporating separator 2 and degree of depth inspissator 3, be provided with B-grade condensation water circulating pipe, B-grade condensation water circulating pipe is as follows: between described condensate water pot and integral type falling liquid film circulating and evaporating separator 2, be provided with one-level condensed water discharge pipe road 49, between described condensate water pot and degree of depth inspissator 3, be provided with B-grade condensation water discharge pipe road 51, the bottom of described condensate water pot 25 is connected with condensed water preheater by condensate pump 26, and described condensed water preheater is connected with condensed water discharge pipe road 28;
Evaporative condenser coolant-temperature gage after use is higher, and the hot water of getting by condensate pump 26 enters into the material that condensed water preheater 27 goes heating to be concentrated, and has reclaimed the partial heat energy of system. In the process that maintains system vacuum, the part steam that vavuum pump is taken out of also can, for heating material, reclaim heat energy wherein.
System is also provided with fixed gas cooler 38, knockout drum 39 and vavuum pump 42, and be provided with secondary fixed gas circulating line between integral type falling liquid film circulating and evaporating separator 2 and degree of depth inspissator 3, secondary fixed gas circulating line is as follows: described fixed gas cooler 38 one end are connected with knockout drum 39, the lower end of described knockout drum 39 is connected with condensate water pot 25 by secondary fixed gas equalizing main 47, described knockout drum 39 upper ends are connected with vavuum pump 42, between the other end of described fixed gas cooler 38 and integral type falling liquid film circulating and evaporating separator 2, be provided with the one-level pipeline 36 of finding time, between the other end of described fixed gas cooler 38 and degree of depth inspissator 3, be provided with secondary evacuation tube 37, between condensate water pot 25 and integral type falling liquid film circulating and evaporating separator 2, be provided with one-level fixed gas equalizing main 46, between condensate water pot 25 and degree of depth inspissator 3, be provided with secondary fixed gas equalizing main 47.
In order effectively to improve thickening efficiency, the longitudinal central axis line of described primary separator 5 is provided with baffle plate 64, and primary separator 5 is divided into separation chamber's I 6 and separation chamber's II 7 by described baffle plate 64.
The top of described evaporation tube I and evaporation tube II is respectively equipped with independently liquid distributor.
Concentrate discharge nozzle 22 is provided with discharging flow meter 23.
Described condensed water preheater 27 and raw vapor preheater 34 are plate type heat exchanger, tubular heat exchanger or spiral tube exchanger.
Between described secondary circulating line and one-level circulating line, be provided with and turn material control valve 24.
Described compressor is high-speed centrifugal compressor, roots-type compressor, low-speed centrifugal vapour compression machine or screw vapour compression machine.
The compression temperature rise of described compressor is 6-23 DEG C.
The outlet conduit place of described three grades of circulating pumps 20 is provided with densitometer, and described density is counted tuning-fork type or pressure type.
Stoste after original fluid container 30 bufferings uses feed pump 31 to integral type falling liquid film circulating and evaporating separator 2 interior feed after 33 meterings of pan feeding flowmeter. Feed liquid is in pumping procedure, first through 27 heat exchange of condensed water preheater, after heat exchange, temperature approaches the evaporating temperature (50-90 DEG C) of setting, make to have after the condensed water cooling of higher temperature through condensed water discharge pipe road 28 discharge systems simultaneously, then feed liquid enters the interior further preheating of raw vapor preheater 34, the feed liquid that is preheating to boiling point continuously by feed pipe 35 by the liquid distributor uniform-flow of one-level falling film heating device 4 upper ends to evaporation tube, be membranaceous and flow down along evaporation tube inwall, thereby carry out heat exchange and be subject to thermal evaporation with the heating steam in pipe outer wall one-level shell side 8. Due to the effect of vacuum, indirect steam flows rapidly to bottom, has accelerated the speed that liquid film declines. Gas-liquid enters the primary separator 5 of integral type falling liquid film circulating and evaporating separator 2 bottoms, then enters one-level circulating line and under the effect of one-level circulating pump 13, circulates concentrated. Due to difference in specific gravity, gas-liquid in centrifugal action next stage separator 5 is thoroughly separated, isolated indirect steam goes out jet chimney 52 through one-level secondary and delivers to compressor 1, delivers to shell side and emit the solution in Topography evaporation tube after compressor 1 compression heats up, boosts. Concentrate is under the effect of secondary circulating pump 16 in a part of penetration depth inspissator 3 of degree of depth concentrator feed pipe 18, and another part continues to participate in circulation in integral type falling liquid film circulating and evaporating separator 2. The feed liquid of penetration depth inspissator 3 circulates and is subject to thermal evaporation, gas-liquid separation in three grades of separators 10 through three grades of circulation pipe I 19, three grades of circulation pipe II 21 in three grades of falling film heating devices 9 under the effect of three grades of circulating pumps 20. Isolated indirect steam through secondary secondary go out jet chimney 53, one-level secondary goes out jet chimney 52 and enters compressor 1, after compressor 1 compression heats up, boosts, deliver to shell side and emit Topography feed liquid. Feed concentration in the densitometer 58 on-line monitoring degree of depth inspissators 3 of three grades of circulation pipe II 21. A concentrate part is expelled to the final storage tank of concentrate through concentrate discharge nozzle 22 under the effect of three grades of circulating pumps 20, and another part continues to participate in circulation. Concentrate discharge nozzle 22 is provided with discharging flow meter 23 can on-line monitoring concentrate discharge rate.
One-level condensed water discharge pipe road 49 and the B-grade condensation water discharge pipe road 51 of the condensed water heater via bottom that condensation is got off are discharged in condensate water pot 25. Condensed water in condensate water pot 25 preheats stoste enter condensed water preheater 27 under condensate pump 26 effects in. In order to maintain intrasystem pressure balance, one-level shell side 8, secondary shell side 11 are respectively equipped with the one-level fixed gas equalizing main 46 and the secondary fixed gas equalizing main 47 that are connected with condensate water pot 25. For feed liquid is evaporated at low temperatures, the vacuum of system maintains with the discharge of fixed gas and is completed by the vavuum pump 42 of finding time on pipeline 43, is provided with ball valve 40 and fixed gas control valve 41 and is used for the vacuum of control system on the pipeline 43 of finding time before vavuum pump 42. The vacuum that regulates separation chamber's I 6, separation chamber's II 7 and three grades of separators 10 by fixed gas control valve, makes vacuum degree control at 20-85kpa.
Original fluid container 30 is respectively equipped with cleaning fluid inlet pipe and stoste inlet pipe, described cleaning fluid inlet pipe is provided with manual ball valve 29, for opened manually cleaning fluid inlet pipe, so that the cleaning operation after using, then the bottom of separation chamber's I 6 and separation chamber's II 7 is on its circulating line, to be respectively equipped with slag-drip opening I 44 and slag-drip opening II 45, for discharging the slag of depositing of integral type falling liquid film circulating and evaporating separator.
On one-level condensed water discharge pipe road 49 and B-grade condensation water discharge pipe road 51, be respectively equipped with the first visor 48 and the second visor 50, whether the condensed water in pipeline discharged for observing.
Equipment provided by the present invention can meet the concentrated production requirement of continuous feed and discharge, on the basis of integral type falling liquid film circulating and evaporating separator 2, increase degree of depth inspissator 63, can reach more highly enriched requirement within a short period of time, shorten heating material concentration time, the heat-sensitive substance in can the retained product of larger limit. Material is concentrated to and finally becomes more and more sticky, and the application of degree of depth inspissator has reduced the difficulty of operating maintenance maintenance, easy to clean. Adopt water circulation vavuum pump to extract incoagulable gas out and maintain intrasystem vacuum, ensureing solution explosive evaporation under negative pressure, temperature is low, and composition is survivable. Adopt condensed water preheater to carry out preheating to material, reclaim the waste heat of condensed water, adopt compressor to collect indirect steam, reuse the latent heat of indirect steam, saved the energy, save condensing plant, reduce the consumption of cooling water, the cost that has reduced enterprise, has increased enterprise income, can also reduce environmental pollution simultaneously. The application of Computer Control Technology has realized in good time detection and the control to key technological parameter in important production process, serialization and automation that Chinese medicine is produced are realized, improve production efficiency, reduced production cost, to the important in inhibiting that improves the quality of products.
Embodiment should not be considered as limitation of the present invention, but any improvement of doing based on spirit of the present invention, all should be within protection scope of the present invention.
Claims (10)
1. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression, it is characterized in that: it comprises original fluid container (30), original fluid container (30) connects feed pump (31) successively, condensed water preheater (27), after raw vapor preheater (34), be connected with integral type falling liquid film circulating and evaporating separator (2), described integral type falling liquid film circulating and evaporating separator (2) comprises one-level falling film heating device (4) and primary separator (5), described one-level falling film heating device (4) is divided into evaporation tube I and evaporation tube II, the bottom of described primary separator (5) is divided into separation chamber's I (6) and separation chamber's II (7), described separation chamber I (6) and separation chamber's II (7) upper end are communicated with, the bottom of described separation chamber I (6) is communicated with the one-level charging aperture (61) of integral type falling liquid film circulating and evaporating separator (2) by one-level circulating pump (13), form one-level circulating line, the bottom of described separation chamber II (7) is communicated with the secondary charging aperture (62) of integral type falling liquid film circulating and evaporating separator (2) by secondary circulating pump (16), form secondary circulating line,
Described secondary circulating line is connected with the degree of depth concentrator feed mouth (63) of degree of depth inspissator (3), described degree of depth inspissator (3) comprises three grades of falling film heating devices (9) and three grades of separators (10), the bottom of described three grades of separators (10) is communicated with degree of depth concentrator feed mouth (63) by three grades of circulating pumps (20), form three grades of circulating lines, described three grades of circulating lines are provided with concentrate discharge nozzle (22);
System is provided with compressor (1), between itself and integral type falling liquid film circulating and evaporating separator (2) and degree of depth inspissator (3), be provided with second steam circulating line, second steam circulating line is as follows: between the top of described primary separator (5) and degree of depth inspissator, be provided with one-level secondary and go out jet chimney (52), the top of described three grades of separators (10) is provided with secondary secondary and goes out jet chimney (53), secondary secondary goes out jet chimney (53) end and is connected with compressor (1), between the one-level shell side of described compressor (1) and integral type falling liquid film circulating and evaporating separator (2), be provided with one-level secondary and enter jet chimney (54), between described compressor (1) and the secondary shell side of degree of depth inspissator, be provided with secondary secondary and enter jet chimney (55),
System is also provided with condensate water pot (25), between itself and integral type falling liquid film circulating and evaporating separator (2) and degree of depth inspissator (3), be provided with B-grade condensation water circulating pipe, B-grade condensation water circulating pipe is as follows: between described condensate water pot and integral type falling liquid film circulating and evaporating separator (2), be provided with one-level condensed water discharge pipe road (49), between described condensate water pot and degree of depth inspissator (3), be provided with B-grade condensation water discharge pipe road (51), the bottom of described condensate water pot (25) is connected with condensed water preheater by condensate pump (26), described condensed water preheater is connected with condensed water discharge pipe road (28),
System is also provided with fixed gas cooler (38), knockout drum (39) and vavuum pump (42), and be provided with secondary fixed gas circulating line between integral type falling liquid film circulating and evaporating separator (2) and degree of depth inspissator (3), secondary fixed gas circulating line is as follows: described fixed gas cooler (38) one end is connected with knockout drum (39), the lower end of described knockout drum (39) is connected with condensate water pot (25) by secondary fixed gas equalizing main (47), described knockout drum (39) upper end is connected with vavuum pump (42), between the other end of described fixed gas cooler (38) and integral type falling liquid film circulating and evaporating separator (2), be provided with the one-level pipeline (36) of finding time, between the other end of described fixed gas cooler (38) and degree of depth inspissator (3), be provided with secondary evacuation tube (37), between condensate water pot (25) and integral type falling liquid film circulating and evaporating separator (2), be provided with one-level fixed gas equalizing main (46), between condensate water pot (25) and degree of depth inspissator (3), be provided with secondary fixed gas equalizing main (47).
2. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 1, it is characterized in that, the longitudinal central axis line of described primary separator (5) is provided with baffle plate (64), and primary separator (5) is divided into separation chamber's I (6) and separation chamber's II (7) by described baffle plate (64).
3. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 1 and 2, is characterized in that, the vacuum degree control of described separation chamber I (6), separation chamber's II (7) and three grades of separators (10) is 20-85kpa.
4. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 1, is characterized in that, the top of described evaporation tube I and evaporation tube II is respectively equipped with independently liquid distributor.
5. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 1, is characterized in that, concentrate discharge nozzle (22) is provided with discharging flow meter (23).
6. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 1, it is characterized in that, described condensed water preheater (27) and raw vapor preheater (34) are plate type heat exchanger, tubular heat exchanger or spiral tube exchanger.
7. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 1, is characterized in that, be provided with and turn material control valve (24) between described secondary circulating line and one-level circulating line.
8. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 1, it is characterized in that, described compressor is high-speed centrifugal compressor, roots-type compressor, low-speed centrifugal vapour compression machine or screw vapour compression machine.
9. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 8, is characterized in that, the compression temperature rise of described compressor is 6-23 DEG C.
10. three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression according to claim 1, is characterized in that, the outlet conduit place of described three grades of circulating pumps (20) is provided with densitometer, and described density is counted tuning-fork type or pressure type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510124920.9A CN104759108B (en) | 2015-03-23 | 2015-03-23 | Three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression |
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| CN201510124920.9A CN104759108B (en) | 2015-03-23 | 2015-03-23 | Three grades of continuous falling liquid film circulating and evaporating concentration systems with function of mechanical steam recompression |
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| CN104759108A CN104759108A (en) | 2015-07-08 |
| CN104759108B true CN104759108B (en) | 2016-05-04 |
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| CN104096370B (en) * | 2013-04-13 | 2017-04-26 | 郭朝军 | Multistage evaporating column used for carrying out evaporation process to salt-containing water through air |
| CN204522328U (en) * | 2015-03-23 | 2015-08-05 | 河北乐恒化工设备制造有限公司 | Three grades with function of mechanical steam recompression continuous falling liquid film circulating and evaporating concentration systems |
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Address after: 065000 Industrial Road two, Chao Bai He Industrial Park, Dachang Hui Autonomous County, Langfang, Hebei Patentee after: Hebei Le Heng energy saving equipment Co., Ltd. Address before: 065000 Industrial Road two, Chao Bai He Industrial Park, Dachang Hui Autonomous County, Langfang, Hebei Patentee before: Hebei Le Heng chemical industry equipment Manufacturing Co., Ltd |