CN209438075U - Four-effect evaporation equipment - Google Patents
Four-effect evaporation equipment Download PDFInfo
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- CN209438075U CN209438075U CN201822022592.3U CN201822022592U CN209438075U CN 209438075 U CN209438075 U CN 209438075U CN 201822022592 U CN201822022592 U CN 201822022592U CN 209438075 U CN209438075 U CN 209438075U
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Abstract
The utility model relates to a kind of four-effect evaporation equipment, the steam (vapor) outlet of one effect heat exchange tank is connected with the steam inlet of two effect heat exchange tanks, two effect preheating cans, two effect heat exchange tanks, two effect preheating cans steam (vapor) outlets be connected with the steam inlet of triple effect heat exchange tank, triple effect preheating can, triple effect heat exchange tank, triple effect preheating can steam (vapor) outlet be connected with the steam inlet of quadruple effect heat exchange tank, quadruple effect preheating can；The material outlet of quadruple effect preheating can is connected with the material inlet of triple effect preheating can, the material outlet of triple effect preheating can is connected with the material inlet of two effect preheating cans, the material outlet of two effect preheating cans is connected with the material inlet of an effect heat exchange tank, the material outlet of one effect heat exchange tank is connected with the material inlet of two effect heat exchange tanks, the material outlet of two effect heat exchange tanks is connected with the material inlet of triple effect heat exchange tank, and the material outlet of triple effect heat exchange tank is connected with the material inlet of quadruple effect heat exchange tank.The utility model provides a kind of four-effect evaporation equipment that steam utilization effect can be improved.
Description
Technical field
The utility model relates to the four-effect evaporation equipment in evaporation equipment field.
Background technique
In the manufacturing process of glutamic acid, glutamic acid is a necessary production stage by evaporation purification.For enterprise
For, steam mono-consumption is to influence the most important factor of operating cost.Due to energy prices in recent years go up it is very fast, steam cost compared with
Height, and steam consumption quantity is larger in industrial process, thus the height of large-scale plant steam mono-consumption influences the overall cost of product
It is larger.Existing evaporation equipment can not accomplish the reasonable utilization of steam, therefore cause the usage amount of steam larger.
Utility model content
The purpose of this utility model is to provide a kind of four-effect evaporation equipment that steam utilization effect can be improved.
In order to solve the above technical problems, the technical solution in the utility model is as follows:
A kind of four-effect evaporation equipment, including an effect evaporation element, two effect evaporation elements, triple effect evaporation unit and four-effect evaporation
Unit, an effect evaporation element include an effect heat exchange tank, and two effect evaporation elements include two effect heat exchange tanks and two effect preheating cans, and triple effect steams
Bill member includes triple effect heat exchange tank and triple effect preheating can, and four-effect evaporation unit includes quadruple effect heat exchange tank and quadruple effect preheating can, is respectively changed
Hot tank, preheating can include steam inlet, steam (vapor) outlet, material inlet and material outlet, the steam (vapor) outlet of an effect heat exchange tank with
Two effect heat exchange tanks, the steam inlet of two effect preheating cans are connected, and two effect heat exchange tanks, the steam (vapor) outlet of two effect preheating cans and triple effect exchange heat
Tank, the steam inlet of triple effect preheating can are connected, triple effect heat exchange tank, the steam (vapor) outlet of triple effect preheating can and quadruple effect heat exchange tank, quadruple effect
The steam inlet of preheating can is connected；The material outlet of quadruple effect preheating can is connected with the material inlet of triple effect preheating can, triple effect preheating
The material outlet of tank is connected with the material inlet of two effect preheating cans, the material of the material outlet of two effect preheating cans and an effect heat exchange tank
Import is connected, and the material outlet of an effect heat exchange tank is connected with the material inlet of two effect heat exchange tanks, the material outlet of two effect heat exchange tanks
It is connected with the material inlet of triple effect heat exchange tank, the material outlet of triple effect heat exchange tank is connected with the material inlet of quadruple effect heat exchange tank.
One effect evaporation element further includes an effect knockout drum, and two effect evaporation elements further include two effect knockout drums, triple effect evaporation list
Member further includes triple effect knockout drum, and four-effect evaporation unit further includes quadruple effect knockout drum, and each knockout drum all has material inlet, material goes out
Mouth and steam (vapor) outlet, each heat exchange tank all have secondary steam outlet, and the material inlet and one of an effect knockout drum imitates the two of heat exchange tank
Secondary steam (vapor) outlet is connected, and the material pipe between the material outlet of an effect knockout drum and an effect heat exchange tank, two effect heat exchange tanks is connected,
The steam (vapor) outlet of one effect knockout drum is connected with the steam inlet of two effect heat exchange tanks；The material inlet of two effect knockout drums and two effects exchange heat
The secondary steam outlet of tank is connected, the materail tube between the material outlet of two effect knockout drums and two effect heat exchange tanks, triple effect heat exchange tank
Road is connected, and the steam (vapor) outlet of two effect knockout drums is connected with the steam inlet of triple effect heat exchange tank；The material inlet of triple effect knockout drum with
The secondary steam outlet of triple effect heat exchange tank is connected, between the material outlet and triple effect heat exchange tank, quadruple effect heat exchange tank of triple effect knockout drum
Material pipe be connected, the steam (vapor) outlet of triple effect knockout drum is connected with the steam inlet of quadruple effect heat exchange tank.
It is connected with circulation material conveying pipeline between the material inlet and material outlet of each heat exchange tank, is arranged on circulation material conveying pipeline
There is circulating pump.
Despumation device, Despumation device packet are provided between material inlet and steam (vapor) outlet in the separation tank of knockout drum
It includes cone cap and lower conical ring setting up and down, bores the small head end of cap and lower conical ring upward and axis vertically extends, knockout drum
The small head end upper conical ring directed downwardly on the upside of lower conical ring is additionally provided in tank body, the small head end of upper conical ring is downwardly projecting to be extend into
The inner hole upper end of lower conical ring, the inner wall extending direction for boring cap intersect with the inner wall of upper conical ring, bore to be formed between cap and upper conical ring and remove
Foam channel.
The periphery of lower conical ring is fixed on the inner wall of the tank body, and cone cap is fixed on tank body by the lifting of vertical connection strap
Top, the vertical connection strap have at least two, and each vertical connection strap is two neighboring vertically to connect along the circumferentially-spaced arrangement for boring cap
Gas passage is formed between narrow bars.
Four-effect evaporation equipment further includes condensed water discharge pipe road, and condensation-water drain is provided on each heat exchange tank, and two effects are changed
Hot tank, triple effect heat exchange tank, the condensation-water drain of quadruple effect heat exchange tank are in parallel with the condensed water discharge pipe road, condensed water discharge pipe
The first flash-off steam pipeline being connected with the steam inlet of triple effect heat exchange tank is connected on road, condensed water discharge pipe is also connected on road
There is the second flash-off steam pipeline being connected with the steam inlet of the quadruple effect heat exchange tank, the first flash-off steam pipeline is in two effects and changes
Between the condensation-water drain of hot tank and the condensation-water drain of triple effect heat exchange tank, the second flash-off steam pipeline is in triple effect heat exchange tank
Between condensation-water drain and the condensation-water drain of quadruple effect heat exchange tank.
The utility model has the following beneficial effects: when in use, the mainstream of steam is sequentially that an effect heat exchange tank → bis- effects are changed
Hot tank, two effect preheating can → triple effect heat exchange tanks, triple effect preheating can → quadruple effect heater, quadruple effect preheating can, along flowing through for steam
The temperature in direction, steam is also lower and lower, however the mainstream of material is sequentially, quadruple effect preheating can → triple effect preheating can → bis- effects
A preheating can → effect heat exchange tank → bis- effect heat exchange tank → triple effect heat exchange tank → quadruple effect heat exchange tanks, such material are entering an effect heat exchange
It has been preheated using the waste heat of steam before tank, has improved the utilizing status of steam.
Further, the material through initial gross separation can generate the secondary steam with a small amount of liquid mist drop, and secondary steam enters
Knockout drum is separated, and the material isolated enters this effect circulation, and the steam for separating generation then enters in the heat exchange tank of next effect
It continues with, can further reduce steam usage amount.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the utility model；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is the structural schematic diagram of knockout drum in Fig. 1.
Specific embodiment
The implementation of four-effect evaporation equipment is for example shown in Fig. 1 ~ 3 in the utility model: including an effect evaporation element, two effect evaporations
Unit, triple effect evaporation unit, four-effect evaporation unit and condenser 26, an effect evaporation element include an effect heat exchange tank 19 and an effect point
From tank 18, two effect evaporation elements include that two effect heat exchange tanks 17, two imitate preheating can 16 and two effect knockout drums 15, triple effect evaporation unit packet
Include triple effect heat exchange tank 14, triple effect preheating can 13 and triple effect knockout drum 12, four-effect evaporation unit includes that quadruple effect heat exchange tank 11, quadruple effect are pre-
Hot tank 10 and quadruple effect knockout drum 35.
The structure of each heat exchange tank is all the same, and heat exchange tank belongs to the prior art, and heat exchange tank includes the heat exchange tank tank being vertically arranged
Body is provided with spaced apart upper perforated plate and lower perforated plate up and down in the tank that exchanges heat, multiple change is distributed on upper perforated plate, lower perforated plate
Heat pipe, the upper end of heat exchanger tube flush setting with the upper face of upper perforated plate, and the lower end of heat exchanger tube flushes with the upper face of lower perforated plate and sets
It sets, top, the bottom for the tank that exchanges heat are respectively arranged with material inlet and material outlet, on the tank that exchanges heat in upper perforated plate under
It is provided with steam inlet and steam (vapor) outlet between tube sheet, secondary steaming is provided on the upside of the bottom for the tank that exchanges heat and material outlet
Vapor outlet, figure middle term 30 indicate that the material inlet of heat exchange tank, item 33 indicate that the material outlet of heat exchange tank, item 31 indicate heat exchange tank
Steam inlet, item 34 indicate that the steam (vapor) outlet of heat exchange tank, item 36 indicate the secondary steam outlet of heat exchange tank, also to set on each heat exchange tank
It is equipped with condensation-water drain 32.The structure of each preheating can is also identical, and preheating can also belongs to the prior art, preheating can and heat exchange tank class
Seemingly, only size is a little bit smaller, and each preheating can also has material inlet, material outlet, steam inlet and steam (vapor) outlet, figure middle term 28
Indicate that the material inlet of preheating can, item 35 indicate that the material outlet of preheating can, item 29 indicate the steam inlet of preheating can, 27 table of item
Show the steam (vapor) outlet of preheating can.
The structure of each knockout drum is also all the same, and knockout drum includes that lower end is provided with material inlet, upper end is provided with steam and goes out
Mouthful separation tank 4, the bottom for separating tank is provided with material outlet, the extending direction of the material inlet of knockout drum with point
It is consistent from the tangential direction of tank.It is provided with Despumation device between material inlet and steam (vapor) outlet in separation tank, removes
Foam device includes the cone cap 9 set gradually along the vertical direction, upper conical ring 8 and lower conical ring 7, and cone cap 9, upper conical ring 8, lower conical ring 7 are equal
Be coaxially set with tank body, bore the small head end of cap 9 and lower conical ring 7 upward, the small head end of upper conical ring downward, upper conical ring, lower conical ring
Periphery with inner tank wall welding be connected, the small head end of upper conical ring extend into the inner hole upper end of lower conical ring, the microcephaly of upper conical ring
The downwardly projecting upper end in lower conical ring is held, tilts the gear extended downward outside structure, the lower end of upper conical ring so as to form one
Welding is connected at the top of side and lower conical ring.Cone cap is lifted on the top of separation tank, adjacent vertical connection by vertical connection strap 2
Gas passage is formed between item, bores and is arranged independently of one another between cap and upper conical ring, bores the inner wall extending direction and upper conical ring of cap
Inner wall intersection, bores and forms foam removal channel 3 between cap and upper conical ring.The stub end maximum gauge for boring cap is greater than the small head end of lower conical ring
Minimum diameter.Figure middle term 1 indicates that the steam (vapor) outlet of knockout drum, item 6 indicate that the material inlet of knockout drum, item 5 indicate knockout drum
Material outlet.
The secondary steam for containing foam and gas when use enters in separation tank through the material inlet of knockout drum, and two
Secondary steam is along the tube wall tangential flow of separation tank, and in foam uphill process, the foam on separation tank periphery, which rises, is met
To lower conical ring, under the liquid attached jet in foam, a foam removal is realized, lower end protrudes from the upper conical ring of lower conical ring, can be to avoid
Liquid flows to upside because of pressure, and the foam rising in the middle part of tank body encounters cone cap, after cone cap foam removal, the bubble containing gas
Foam strikes on conical ring again, carries out foam removal again, last gas is through gas passage, the steam between adjacent vertical connection strap
Outlet discharge, liquid are then discharged through material outlet.
In the present embodiment, moved towards about material, the material inlet phase of the material outlet and triple effect preheating can of quadruple effect preheating can
Even, the material outlet of triple effect preheating can is connected with the material inlet of two effect preheating cans, the material outlet and an effect of two effect preheating cans
The material inlet of heat exchange tank is connected, and the material outlet of an effect heat exchange tank is connected with the material inlet of two effect heat exchange tanks, two effect heat exchange
The material outlet of tank is connected with the material inlet of triple effect heat exchange tank, the material outlet of triple effect heat exchange tank and the material of quadruple effect heat exchange tank
Import is connected.In addition, being connected with circulation material conveying pipeline 40, circulation material conveying pipe between the material inlet and material outlet of each heat exchange tank
Road is provided with circulating pump 21.The secondary steam outlet of one effect heat exchange tank is connected with the material inlet of an effect knockout drum, an effect point
Material outlet from tank is connected with the material pipe between an effect heat exchange tank, two effect heat exchange tanks；The secondary steam of two effect heat exchange tanks
Outlet with two effect knockout drums material inlet be connected, two imitate knockout drums material outlet and two imitate heat exchange tanks, triple effect heat exchange tank it
Between material pipe be connected；The secondary steam outlet of triple effect heat exchange tank is connected with the material inlet of triple effect knockout drum, triple effect separation
Material pipe between the material outlet of tank and triple effect heat exchange tank, quadruple effect heat exchange tank is connected；The secondary steam of quadruple effect heat exchange tank goes out
Mouth is connected with the material inlet of quadruple effect knockout drum, and the material outlet of quadruple effect knockout drum is connected with the material outlet of quadruple effect heat exchange tank,
Figure middle term 23 indicates material-handling pump.
It is moved towards about steam, the steam inlet that high temperature, the high steam of vapour source imitate heat exchange tank through one enters equipment, an effect
The steam (vapor) outlet of heat exchange tank, one imitate the steam (vapor) outlet of knockout drum and provide steaming for the steam inlets of two effect heat exchange tanks, two effect preheating cans
Vapour；Two effect heat exchange tanks, two effect preheating cans, two effect knockout drums steam (vapor) outlet be triple effect heat exchange tank, triple effect preheating can steam into
Mouth provides steam；Triple effect heat exchange tank, triple effect preheating can, triple effect knockout drum steam (vapor) outlet be quadruple effect heat exchange tank, quadruple effect preheating can
Steam inlet provide steam.The steam (vapor) outlet of quadruple effect heat exchange tank, quadruple effect preheating can and quadruple effect knockout drum is connected with condenser, cold
The water outlet of condenser 26 is provided with the first condensed water water pump 25.
The condensation-water drain of one effect heat exchange tank is provided with the second condensed water water pump 20.Four-effect evaporation equipment further includes condensed water
Discharge line, third condensed water water pump 24 is provided on condensed water discharge pipe road, and two effect heat exchange tanks, triple effect heat exchange tank, quadruple effect change
The condensation-water drain of hot tank is in parallel with the condensed water discharge pipe road, is connected on condensed water discharge pipe road and triple effect heat exchange tank
Connected the first flash-off steam pipeline 22 of steam inlet, be also connected with and the quadruple effect heat exchange tank on condensed water discharge pipe road
The second connected flash-off steam pipeline 42 of steam inlet, the first flash-off steam pipeline be in the condensation-water drains of two effect heat exchange tanks with
Between the condensation-water drain of triple effect heat exchange tank, the condensation-water drain that the second flash-off steam pipeline is in triple effect heat exchange tank is changed with quadruple effect
Between the condensation-water drain of hot tank.
The main body trend of material is in the present embodiment: material liquid holding vessel (not shown) → quadruple effect preheating can → triple effect
A preheating can → bis- effect preheating cans → effect heat exchange tank → bis- effect heat exchange tank → triple effect heat exchange tank → quadruple effect heat exchange tank → finished product storage tanks
(not shown).In each effect evaporation element, after material enters the tank body of heat exchange tank, flow downward along each heat exchanger tube,
The heat of the outer steam of absorption tube generates explosive vaporization in flow process, and feed liquid and the secondary steam evaporated are preliminary in heat exchange tank
Separation, the secondary steam through initial gross separation also enters in knockout drum entrainment of a small amount of liquid mist drop to be separated again, after separation
Material continues to participate in circulation in this effect, enters two effect systems after meeting concentration necessary, until reaching after four-effect evaporation unit
Finished product requirement, is delivered to next workshop section through material-handling pump.To meet above-mentioned job control demand, each material in the present embodiment
The corresponding position of conveyance conduit is provided with corresponding switch valve (not shown).
About condensed water, the condensed water that an effect heat exchange tank generates directly is drained by the second condensed water water pump, two effect heat exchange tanks,
The condensed water that triple effect heat exchange tank, quadruple effect heat exchange tank generate then is connected with condensed water discharge pipe road, and each effect condensed water is next in inflow
When effect system.It since condensate temperature is higher than next effect, therefore flashes, the steam after flash distillation can be used as the heating of next effect
Steam, the latent heat that can make full use of condensed water in this way reach energy-efficient purpose.
Claims (6)
1. a kind of four-effect evaporation equipment, it is characterised in that: including an effect evaporation element, two effect evaporation elements, triple effect evaporation unit
With four-effect evaporation unit, an effect evaporation element includes an effect heat exchange tank, and two effect evaporation elements include that two effect heat exchange tanks and two effects are pre-
Hot tank, triple effect evaporation unit include triple effect heat exchange tank and triple effect preheating can, and four-effect evaporation unit includes quadruple effect heat exchange tank and quadruple effect
Preheating can, each heat exchange tank, preheating can include steam inlet, steam (vapor) outlet, material inlet and material outlet, and one imitates heat exchange tank
Steam (vapor) outlet is connected with the steam inlet of two effect heat exchange tanks, two effect preheating cans, the steam (vapor) outlet of two effect heat exchange tanks, two effect preheating cans
It is connected with the steam inlet of triple effect heat exchange tank, triple effect preheating can, triple effect heat exchange tank, the steam (vapor) outlet of triple effect preheating can and quadruple effect change
Hot tank, the steam inlet of quadruple effect preheating can are connected；The material outlet of quadruple effect preheating can is connected with the material inlet of triple effect preheating can,
The material outlet of triple effect preheating can is connected with the material inlet of two effect preheating cans, and the material outlet of two effect preheating cans and an effect exchange heat
The material inlet of tank is connected, and the material outlet of an effect heat exchange tank is connected with the material inlet of two effect heat exchange tanks, two effect heat exchange tanks
Material outlet is connected with the material inlet of triple effect heat exchange tank, the material outlet of triple effect heat exchange tank and the material inlet of quadruple effect heat exchange tank
It is connected.
2. four-effect evaporation equipment according to claim 1, it is characterised in that: an effect evaporation element further includes effect separation
Tank, two effect evaporation elements further include two effect knockout drums, and triple effect evaporation unit further includes triple effect knockout drum, and four-effect evaporation unit also wraps
Quadruple effect knockout drum is included, each knockout drum all has material inlet, material outlet and steam (vapor) outlet, and each heat exchange tank all has secondary steam
Outlet, the material inlet of an effect knockout drum are connected with the secondary steam outlet of an effect heat exchange tank, the material outlet of an effect knockout drum
Material pipe between an effect heat exchange tank, two effect heat exchange tanks is connected, and the steam (vapor) outlet and two of an effect knockout drum imitates heat exchange tanks
Steam inlet is connected；The material inlet of two effect knockout drums is connected with the secondary steam outlet of two effect heat exchange tanks, two effect knockout drums
Material pipe between material outlet and two effect heat exchange tanks, triple effect heat exchange tank is connected, the steam (vapor) outlet and triple effect of two effect knockout drums
The steam inlet of heat exchange tank is connected；The material inlet of triple effect knockout drum is connected with the outlet of the secondary steam of triple effect heat exchange tank, triple effect
Material pipe between the material outlet of knockout drum and triple effect heat exchange tank, quadruple effect heat exchange tank is connected, and the steam of triple effect knockout drum goes out
Mouth is connected with the steam inlet of quadruple effect heat exchange tank.
3. four-effect evaporation equipment according to claim 2, it is characterised in that: the material inlet and material outlet of each heat exchange tank
Between be connected with circulation material conveying pipeline, be provided with circulating pump on circulation material conveying pipeline.
4. four-effect evaporation equipment according to claim 2, it is characterised in that: in the separation tank of knockout drum in material into
Despumation device is provided between mouth and steam (vapor) outlet, Despumation device includes cone cap and lower conical ring setting up and down, bores cap and lower cone
The small head end of ring is upward and axis vertically extends, and it is directed downwardly positioned at lower conical ring that small head end is additionally provided in separation tank
The upper conical ring of upside, the downwardly projecting inner hole upper end for extending into lower conical ring of the small head end of upper conical ring, bores the inner wall extending direction of cap
Intersect with the inner wall of upper conical ring, bores and form foam removal channel between cap and upper conical ring.
5. four-effect evaporation equipment according to claim 4, it is characterised in that: the tank body is fixed in the periphery of lower conical ring
On inner wall, cone cap is fixed on the top of tank body by the lifting of vertical connection strap, and the vertical connection strap has at least two, each vertical
Connection strap forms gas passage between the circumferentially-spaced arrangement for boring cap, two neighboring vertical connection strap.
6. four-effect evaporation equipment described in any one according to claim 1 ~ 5, it is characterised in that: four-effect evaporation equipment further includes
Condensed water discharge pipe road is provided with condensation-water drain, two effect heat exchange tanks, triple effect heat exchange tank, quadruple effect heat exchange tank on each heat exchange tank
Condensation-water drain it is in parallel with the condensed water discharge pipe road, the steaming with triple effect heat exchange tank is connected on condensed water discharge pipe road
The first connected flash-off steam pipeline of vapor inlet, be also connected on condensed water discharge pipe road with the steam of the quadruple effect heat exchange tank into
The second connected flash-off steam pipeline of mouth, the first flash-off steam pipeline are in condensation-water drain and the triple effect heat exchange of two effect heat exchange tanks
Between the condensation-water drain of tank, the second flash-off steam pipeline is in the cold of the condensation-water drain of triple effect heat exchange tank and quadruple effect heat exchange tank
Between condensate outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822022592.3U CN209438075U (en) | 2018-12-04 | 2018-12-04 | Four-effect evaporation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822022592.3U CN209438075U (en) | 2018-12-04 | 2018-12-04 | Four-effect evaporation equipment |
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| Publication Number | Publication Date |
|---|---|
| CN209438075U true CN209438075U (en) | 2019-09-27 |
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ID=68012188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822022592.3U Active CN209438075U (en) | 2018-12-04 | 2018-12-04 | Four-effect evaporation equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN209438075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109316770A (en) * | 2018-12-04 | 2019-02-12 | 河南潜合环保科技有限公司 | A kind of four-effect evaporation equipment |
| CN110639219A (en) * | 2019-10-31 | 2020-01-03 | 湖南汉华京电清洁能源科技有限公司 | Multi-effect evaporation process and system thereof |
-
2018
- 2018-12-04 CN CN201822022592.3U patent/CN209438075U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109316770A (en) * | 2018-12-04 | 2019-02-12 | 河南潜合环保科技有限公司 | A kind of four-effect evaporation equipment |
| CN109316770B (en) * | 2018-12-04 | 2023-08-11 | 河南潜合环保科技有限公司 | Four-effect evaporation equipment |
| CN110639219A (en) * | 2019-10-31 | 2020-01-03 | 湖南汉华京电清洁能源科技有限公司 | Multi-effect evaporation process and system thereof |
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