CN109458773A - A kind of downward film evaporator bidirectional-reflux pipeline - Google Patents
A kind of downward film evaporator bidirectional-reflux pipeline Download PDFInfo
- Publication number
- CN109458773A CN109458773A CN201811540286.7A CN201811540286A CN109458773A CN 109458773 A CN109458773 A CN 109458773A CN 201811540286 A CN201811540286 A CN 201811540286A CN 109458773 A CN109458773 A CN 109458773A
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- China
- Prior art keywords
- steam
- pipe
- separator
- fixedly connected
- evaporator
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
Abstract
The invention discloses a kind of downward film evaporator bidirectional-reflux pipelines, including evaporator shell, liquid distributor, discharge bucket and separator；The present invention passes through setting steam pipe, the steam of separator discharge preheats the water of outlet pipe discharge after entering steam pipe, preheated water carries out consumed energy consumption when heating evaporation again to be reduced, the steam of generation flows back into air inlet again and heats to the liquid machine in heating tube, recycles；By the way that the pipeline for conveying water in steam pipe is arranged to coiled pipe, the heat exchange area between the steam of separator discharge is increased, heat transfer is accelerated, reduces thermal loss；By the way that the steam (vapor) outlet of the upper end of separator is set to taper, steam can slide intracavitary to liquefying after pre-cooling liquefaction along the inner wall of steam pipe, be discharged eventually by leakage fluid dram, steam (vapor) outlet is big top and small bottom, in the opposing steam flow to separator after avoiding liquefaction.
Description
Technical field
The present invention relates to vaporizer technology field, specially a kind of downward film evaporator bidirectional-reflux pipeline.
Background technique
Falling film evaporation is that feed liquid is added from falling film evaporator heating room upper tube box, through liquid distribution and film formation device,
It is even to be assigned in each heat exchanger tube, under gravity and vacuum induced and airflow function, flowed from above to below at uniformly membranaceous.It flows over
Cheng Zhong is heated by shell side heat medium and is vaporized, and the steam and liquid phase of generation enter the separation chamber of evaporator jointly, and vapour-liquid is through abundant
Separation, steam enter condenser condensation (single-action operation) or enter lower 1st effective evaporator as heat medium, to realize multiple-effect
Operation, liquid phase are then discharged by separation chamber.Downward film evaporator is widely used in the water of the industries such as medicine, food, chemical industry, light industry or has
The evaporation and concentration of machine solvent solutions is dense, and can be widely used for the liquid waste processing of the above industry.Heat sensitive material is especially adapted for use in,
The equipment is operated continuously under the conditions of vacuum and low temperature, with evaporability is high, energy-saving, operating cost is low and can protect
Exhibit material invariance in evaporation process.
There are some drawbacks when in use in existing falling film evaporator:
1. the cooling water being discharged from falling film evaporator recycles again, need to reheat it, and heats water
Consumed energy consumption is higher when it being made to generate steam；
2. the steam that separator is isolated in single-stage evaporator is discharged after passing through cooling liquid, heat cannot get benefit
With；
3. preheat using the steam that separator is isolated to cooling water, steam condensing reflux is easy to appear to steaming
The situation in device is sent out, keeps separator separating effect unobvious.
Summary of the invention
The purpose of the present invention is to provide a kind of downward film evaporator bidirectional-reflux pipelines, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of downward film evaporator bidirectional-reflux pipeline,
Including evaporator shell, liquid distributor, discharge bucket and separator, the upper end of the evaporator shell connects by the way that ring flange is fixed
It is connected to liquid distributor, and the upper end of liquid distributor offers feed inlet, the lower end of the evaporator shell passes through ring flange
It is fixedly connected with discharge bucket, the outer surface of the evaporator shell is arranged with insulating layer, and the side wall of the evaporator shell opens up
There is air inlet, the inside of the evaporator shell is fixedly installed with fixed disc, the evaporation close to the side of liquid distributor
The inner vertical direction of device shell is provided with plural groups heating tube, and heating tube runs through the upper surface of fixed disc, the heating
The inside of liquid distributor, and the lower end in contact with liquid distributor, the outer surface of the evaporator shell are led in the upper end of pipe
The side lower end opposite with air inlet offers water outlet, and the end of water outlet is fixedly connected with outlet pipe by ring flange, institute
It states the side wall of discharge bucket and outlet pipe is ipsilateral is fixedly connected with connecting tube, and the end of connecting tube and the outer surface of separator are fixed
Connection, the upper end of the separator be welded with steam pipe, and steam pipe is internally provided with coiled pipe, the lower end of the coiled pipe
It is fixedly connected with the end of outlet pipe, the lower end of the discharge bucket is fixedly connected with drainage conduit, and the outer surface of drainage conduit is fixed
Valve is installed, the lower end of the separator is fixedly connected with discharge branch pipe, and the appearance of the end of discharge branch pipe and drainage conduit
Face is fixedly connected.
Preferably, the inner wall of the evaporator shell is welded with fixed ring close to the side of liquid distributor, fixed ring
Upper surface is provided with fixed disc, and fixed disc is contacted with fixed ring, offers at left and right sides of the upper surface of fixed disc
Threaded hole, the position that the upper surface of fixed ring corresponds to threaded hole offer the thread groove of same diameter, are bolted with spiral shell in threaded hole
Bolt, fixed disc are fixedly connected by bolt with fixed ring.
Preferably, the upper surface of the fixed disc offers plural groups circular through hole, and circular through hole is in fixed disc
Upper surface is arranged in arrays, and circular through hole diameter is identical as heating tube, and the outer surface of the heating tube is welded with baffle ring, and baffle ring
Diameter be greater than circular through hole diameter, the lower surface of baffle ring is contacted with the upper surface of fixed disc.
Preferably, the outer surface of the outlet pipe is fixedly installed with water pump, and the end of outlet pipe is bolted with bridge piece, even
The upper end for connecing bend pipe is bolted with coiled pipe, and the upper end of the coiled pipe is fixedly connected with straight tube, and straight tube passes through the upper of steam pipe
Outside is led on surface.
Preferably, the bridge piece passes through the outer surface of steam pipe, and the outer surface of bridge piece and steam pipe connect
Sealing ring is provided between contacting surface, the outer surface of straight tube is arranged with insulating layer.
Preferably, the inside of the separator has been welded with demarcation plate by upper end, and steam (vapor) outlet is offered on demarcation plate, steams
The lower end of vapor outlet is tapered, and upper end is tubule, and the interior of steam pipe is led in the upper surface that the upper end of the tubule passes through separator
Portion.
Preferably, liquefaction chamber, the upper end for the chamber that liquefies and steam pipe are formed between the demarcation plate and the upper surface of separator
Lower end connection, the outer surface of separator, which is located above demarcation plate, offers leakage fluid dram.
Compared with prior art, the beneficial effects of the present invention are: structure of the invention setting rationally, functional, have with
Lower advantage:
1. the steam of separator discharge, which enters after steam pipe, carries out pre-add to the water of outlet pipe discharge by setting steam pipe
Heat, preheated water carries out consumed energy consumption when heating evaporation again to be reduced, and the steam of generation flows back into air inlet to adding again
Liquid machine in heat pipe is heated, and is recycled；
2. being increased between the steam of separator discharge by the way that the pipeline for conveying water in steam pipe is arranged to coiled pipe
Heat exchange area, accelerate heat transfer, reduce thermal loss；
3. steam, can be along steam after pre-cooling liquefaction by the way that the steam (vapor) outlet of the upper end of separator is set to taper
The inner wall of pipe slides intracavitary to liquefying, and is discharged eventually by leakage fluid dram, and steam (vapor) outlet is big top and small bottom, the steaming after avoiding liquefaction
Vapour flows back into separator.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is heating tube of the present invention and fixed ring scheme of installation；
Fig. 3 is a-quadrant enlarged diagram in Fig. 1.
In figure: 1 evaporator shell, 2 liquid distributors, 3 discharge buckets, 4 insulating layers, 5 feed inlets, 6 air inlets, 7 fixed circles
Plate, 701 circular through holes, 701 threaded holes, 8 heating tubes, 9 baffle rings, 10 fixed rings, 11 outlet pipes, 12 drainage conduits, 13 connecting tubes, 14
Separator, 15 discharge branch pipes, 16 steam pipes, 17 steam (vapor) outlets, 18 liquefaction chambers, 19 bridge pieces, 20 coiled pipes.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It please refers to Fig.1 to Fig.3, the present invention provides a kind of technical solution: a kind of downward film evaporator bidirectional-reflux pipeline,
As shown in Figure 1, including evaporator shell 1, liquid distributor 2, discharge bucket 3 and separator 14, the upper end of evaporator shell 1 passes through
Ring flange is fixedly connected with liquid distributor 2, and the upper end of liquid distributor 2 offers feed inlet 5, under evaporator shell 1
End is fixedly connected with discharge bucket 3 by ring flange, and the outer surface of evaporator shell 1 is arranged with insulating layer 4, evaporator shell 1
Side wall offers air inlet 6, and the inside of evaporator shell 1 is fixedly installed with fixed disc 7 close to the side of liquid distributor 2,
The inner vertical direction of evaporator shell 1 is provided with plural groups heating tube 8, and heating tube 8 runs through the upper surface of fixed disc 7,
The inside of liquid distributor 2, and the lower end in contact with liquid distributor 2 are led in the upper end of heating tube 8, evaporator shell 1 it is outer
The surface side lower end opposite with air inlet 6 offers water outlet, and the end of water outlet is fixedly connected with water outlet by ring flange
Pipe 11, the side wall and outlet pipe 11 of discharge bucket 3 are ipsilateral to be fixedly connected with connecting tube 13, and the end of connecting tube 13 and separator 14
Outer surface be fixedly connected, the upper end of separator 14 is welded with steam pipe 16, and steam pipe 16 is internally provided with coiled pipe 20,
The lower end of coiled pipe 20 is fixedly connected with the end of outlet pipe 11, and the lower end of discharge bucket 3 is fixedly connected with drainage conduit 12, and discharge
The outer surface of pipe 12 is fixedly installed with valve, and the lower end of separator 14 is fixedly connected with discharge branch pipe 15, and discharge branch pipe 15
End is fixedly connected with the outer surface of drainage conduit 12.
Further, the inner wall of evaporator shell 1 is welded with fixed ring 10, fixed ring close to the side of liquid distributor 2
10 upper surface is provided with fixed disc 7, and fixed disc 7 is contacted with fixed ring 10, the left and right two of the upper surface of fixed disc 7
Side offers threaded hole 702, and the position that the upper surface of fixed ring 10 corresponds to threaded hole 702 offers the thread groove of same diameter,
Bolt is bolted in threaded hole 702, fixed disc 7 is fixedly connected by bolt with fixed ring 10, and fixed ring 10 is to fixed disc 7
Play the role of fixed and edge supports.
Further, the upper surface of fixed disc 7 offers plural groups circular through hole 701, and circular through hole 701 is justified fixed
The upper surface of plate 7 is arranged in arrays, and 701 diameter of circular through hole is identical as heating tube 8, and the outer surface of heating tube 8 is welded with baffle ring
9, and the diameter of baffle ring 9 is greater than the diameter of circular through hole 701, the lower surface of baffle ring 9 is contacted with the upper surface of fixed disc 7, is kept off
Heating tube 8 is stuck on fixed disc 7 by ring 9, when a certain heating tube 8, which generates crack, to be needed replacing, directly by heating tube 8 from
It is drawn upwardly out in circular through hole 701.
Further, the outer surface of outlet pipe 11 is fixedly installed with water pump, and the end of outlet pipe 11 is bolted with bridge piece
19, the upper end of bridge piece 19 is bolted with coiled pipe 20, and the upper end of coiled pipe 20 is fixedly connected with straight tube, and straight tube passes through steam
Outside is led in the upper surface of pipe 16, and straight tube is connect with extraneous heating device, and heating device adds water preheated in straight tube
The steam of heat, generation is flowed back into evaporator again by air inlet 6, by being preheated in steam pipe 16, is reduced
Water is by thermal evaporation required energy consumption.
Further, bridge piece 19 passes through the outer surface of steam pipe 16, and the outer surface of bridge piece 19 and steam pipe
Sealing ring is provided between 16 contact surface, the outer surface of straight tube is arranged with insulating layer 4, and insulating layer 4 avoids the water in straight tube from existing
Temperature falls back to and is not preheated when reaching heating device again before.
Further, the inside of separator 14 has been welded with demarcation plate by upper end, and steam (vapor) outlet 17 is offered on demarcation plate,
The lower end of steam (vapor) outlet 17 is tapered, and upper end is tubule, and steam pipe 16 is led in the upper surface that the upper end of tubule passes through separator 14
Inside, by after gas-liquid separation, steam flows in steam pipe 16 separator 14 from steam (vapor) outlet 17, on steam (vapor) outlet 17 is arranged to
It holds small lower end big, avoids in steam pipe 16 after steam progress heat exchange, steam liquefied flows back into separation from steam (vapor) outlet 17
In device 14.
Further, liquefaction chamber 18 is formed between demarcation plate and the upper surface of separator 14, the upper end for the chamber 18 that liquefies and steaming
The lower end of steam pipe 16 is connected to, and the outer surface of separator 14, which is located above demarcation plate, offers leakage fluid dram, after steam liquefied along
The inner wall of steam pipe 16 slides to liquefaction chamber 18, and is finally discharged from leakage fluid dram.
Working principle: feed liquid is added from the feed inlet 5 of evaporator upper end, is evenly distributed to through liquid distributor 2 and is respectively added
In heat pipe 8, under gravity and vacuum induced and airflow function, flowed from above to below at uniformly membranaceous, by air inlet 6 to steaming
Send out and input steam in device shell 1, steam heats the feed liquid in heating tube 8, is vaporized, the steam of generation and liquid phase continue to
The lower section of heating tube 8 flows away, and liquid phase enters discharge bucket 3, opens valve, is discharged from drainage conduit 12, and gas-liquid mixture then passes through company
Adapter tube 13 enters in separator 14, the centrifugation through separator 14, and liquid phase is discharged from the discharge branch pipe 15 of 14 lower end of separator,
It is mixed with the liquid phase in drainage conduit 12, gas phase then passes through steam (vapor) outlet 17 and enters in steam pipe 16, steam and material in evaporator
After liquid carries out heat exchange, cooling liquid is finally flowed out from outlet pipe 11, water is pumped in coiled pipe 20 by water pump, steam
Steam in pipe 16 heats the water in coiled pipe 20 in advance, and preheated water is discharged from the straight tube of 20 upper end of coiled pipe,
After evaporating using heating devices heat, steam is flowed back into again in air inlet 6, edge after the steam pre-cooling liquefaction in steam pipe 16
16 inner wall of steam pipe be slipped to liquefaction chamber 18 in, finally from leakage fluid dram be discharged.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of downward film evaporator bidirectional-reflux pipeline, including evaporator shell (1), liquid distributor (2), discharge bucket
(3) and separator (14), the upper end of the evaporator shell (1) is fixedly connected with liquid distributor (2) by ring flange, and liquid
The upper end of body distributor (2) offers feed inlet (5), and the lower end of the evaporator shell (1) is fixedly connected with by ring flange
Discharge bucket (3), it is characterised in that: the outer surface of the evaporator shell (1) is arranged with insulating layer (4), the evaporator shell
(1) side wall offers air inlet (6), and the inside of the evaporator shell (1) is close to the fixed peace in the side of liquid distributor (2)
Equipped with fixed disc (7), the inner vertical direction of the evaporator shell (1) is provided with plural groups heating tube (8), and heating tube
(8) run through the upper surface of fixed disc (7), the inside of liquid distributor (2), and and liquid are led in the upper end of the heating tube (8)
The lower end in contact of body distributor (2), the side lower end that the outer surface of the evaporator shell (1) is opposite with air inlet (6) open up
There is water outlet, the end of water outlet is fixedly connected with outlet pipe (11) by ring flange, the side wall of the discharge bucket (3) and water outlet
(11) are ipsilateral is fixedly connected with connecting tube (13) for pipe, and the outer surface of the end of connecting tube (13) and separator (14) is fixed connects
It connects, the upper end of the separator (14) is welded with steam pipe (16), and steam pipe (16) is internally provided with coiled pipe (20), institute
The lower end for stating coiled pipe (20) is fixedly connected with the end of outlet pipe (11), and the lower end of the discharge bucket (3) is fixedly connected with row
Expects pipe (12), and the outer surface of drainage conduit (12) is fixedly installed with valve, the lower end of the separator (14) is fixedly connected with row
Expect branch pipe (15), and the end of discharge branch pipe (15) is fixedly connected with the outer surface of drainage conduit (12).
2. a kind of downward film evaporator bidirectional-reflux pipeline according to claim 1, it is characterised in that: the evaporator
The inner wall of shell (1) is welded with fixed ring (10) close to the side of liquid distributor (2), and the upper surface of fixed ring (10) is provided with
Fixed disc (7), and fixed disc (7) is contacted with fixed ring (10), is offered at left and right sides of the upper surface of fixed disc (7)
Threaded hole (702), the position that the upper surface of fixed ring (10) corresponds to threaded hole (702) offer the thread groove of same diameter, spiral shell
Bolt is bolted in pit (702), fixed disc (7) is fixedly connected by bolt with fixed ring (10).
3. a kind of downward film evaporator bidirectional-reflux pipeline according to claim 2, it is characterised in that: the fixed circle
The upper surface of plate (7) offers plural groups circular through hole (701), and circular through hole (701) is in square in the upper surface of fixed disc (7)
Battle array arrangement, circular through hole (701) diameter is identical as heating tube (8), and the outer surface of the heating tube (8) is welded with baffle ring (9), and
The diameter of baffle ring (9) is greater than the diameter of circular through hole (701), and the lower surface of baffle ring (9) and the upper surface of fixed disc (7) connect
Touching.
4. a kind of downward film evaporator bidirectional-reflux pipeline according to claim 1, it is characterised in that: the outlet pipe
(11) outer surface is fixedly installed with water pump, and the end of outlet pipe (11) is bolted with bridge piece (19), bridge piece (19)
Upper end is bolted with coiled pipe (20), and the upper end of the coiled pipe (20) is fixedly connected with straight tube, and straight tube passes through steam pipe (16)
Upper surface lead to outside.
5. a kind of downward film evaporator bidirectional-reflux pipeline according to claim 4, it is characterised in that: the connecting bending
It manages (19) and passes through the outer surface of steam pipe (16), and set between the outer surface of bridge piece (19) and the contact surface of steam pipe (16)
It is equipped with sealing ring, the outer surface of straight tube is arranged with insulating layer (4).
6. a kind of downward film evaporator bidirectional-reflux pipeline according to claim 1, it is characterised in that: the separator
(14) inside has been welded with demarcation plate by upper end, offers on demarcation plate steam (vapor) outlet (17), the lower end of steam (vapor) outlet (17)
Tapered, upper end is tubule, and the inside of steam pipe (16) is led in the upper surface that the upper end of the tubule passes through separator (14).
7. a kind of downward film evaporator bidirectional-reflux pipeline according to claim 6, it is characterised in that: the demarcation plate
Liquefaction chamber (18) is formed between the upper surface of separator (14), the liquefy upper end of chamber (18) and the lower end company of steam pipe (16)
Logical, the outer surface of separator (14), which is located above demarcation plate, offers leakage fluid dram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811540286.7A CN109458773A (en) | 2018-12-17 | 2018-12-17 | A kind of downward film evaporator bidirectional-reflux pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811540286.7A CN109458773A (en) | 2018-12-17 | 2018-12-17 | A kind of downward film evaporator bidirectional-reflux pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109458773A true CN109458773A (en) | 2019-03-12 |
Family
ID=65613477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811540286.7A Pending CN109458773A (en) | 2018-12-17 | 2018-12-17 | A kind of downward film evaporator bidirectional-reflux pipeline |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109985408A (en) * | 2019-05-10 | 2019-07-09 | 张健 | Lye preconcentrator |
| CN110559672A (en) * | 2019-09-30 | 2019-12-13 | 安徽鸿昌糖业科技有限公司 | circulating evaporator |
| CN113786634A (en) * | 2021-10-11 | 2021-12-14 | 苏州环诺环保科技有限公司 | Combined silicon carbide film system evaporator |
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|---|---|---|---|---|
| CN2069294U (en) * | 1990-06-22 | 1991-01-16 | 国营常熟制药机械厂 | Disassemble board type evaporator |
| RU1813469C (en) * | 1990-12-10 | 1993-05-07 | Украинский Научно-Исследовательский И Конструкторский Институт Химического Машиностроения | Draining film evaporator |
| CN205073697U (en) * | 2015-10-23 | 2016-03-09 | 江西新信化学有限公司 | Falling film evaporator |
| CN105727580A (en) * | 2016-05-11 | 2016-07-06 | 金溪县绿萃香精香料有限公司 | Falling-film evaporator for preparing spices |
| CN106178557A (en) * | 2016-08-30 | 2016-12-07 | 洛阳双瑞特种装备有限公司 | A kind of vertical tube falling vaporizer |
| CN108651932A (en) * | 2018-05-02 | 2018-10-16 | 门源兴农蜂业有限公司 | A kind of honey process units and its application method |
| CN209386622U (en) * | 2018-12-17 | 2019-09-13 | 江苏世林博尔制冷设备有限公司 | A kind of downward film evaporator bidirectional-reflux pipeline |
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2018
- 2018-12-17 CN CN201811540286.7A patent/CN109458773A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069294U (en) * | 1990-06-22 | 1991-01-16 | 国营常熟制药机械厂 | Disassemble board type evaporator |
| RU1813469C (en) * | 1990-12-10 | 1993-05-07 | Украинский Научно-Исследовательский И Конструкторский Институт Химического Машиностроения | Draining film evaporator |
| CN205073697U (en) * | 2015-10-23 | 2016-03-09 | 江西新信化学有限公司 | Falling film evaporator |
| CN105727580A (en) * | 2016-05-11 | 2016-07-06 | 金溪县绿萃香精香料有限公司 | Falling-film evaporator for preparing spices |
| CN106178557A (en) * | 2016-08-30 | 2016-12-07 | 洛阳双瑞特种装备有限公司 | A kind of vertical tube falling vaporizer |
| CN108651932A (en) * | 2018-05-02 | 2018-10-16 | 门源兴农蜂业有限公司 | A kind of honey process units and its application method |
| CN209386622U (en) * | 2018-12-17 | 2019-09-13 | 江苏世林博尔制冷设备有限公司 | A kind of downward film evaporator bidirectional-reflux pipeline |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109985408A (en) * | 2019-05-10 | 2019-07-09 | 张健 | Lye preconcentrator |
| CN110559672A (en) * | 2019-09-30 | 2019-12-13 | 安徽鸿昌糖业科技有限公司 | circulating evaporator |
| CN113786634A (en) * | 2021-10-11 | 2021-12-14 | 苏州环诺环保科技有限公司 | Combined silicon carbide film system evaporator |
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