CN216737937U - Ternary precursor waste water treatment noncondensable gas condensate recovery system - Google Patents
Ternary precursor waste water treatment noncondensable gas condensate recovery system Download PDFInfo
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- CN216737937U CN216737937U CN202123208430.7U CN202123208430U CN216737937U CN 216737937 U CN216737937 U CN 216737937U CN 202123208430 U CN202123208430 U CN 202123208430U CN 216737937 U CN216737937 U CN 216737937U
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Abstract
The utility model discloses a ternary precursor waste water treatment noncondensable gas condensate recovery system, including noncondensable gas plate heat exchanger, vapour and liquid separator, falling film evaporation ware and forced circulation evaporimeter, vapour and liquid separator includes liquid phase export and gaseous phase export, and the liquid phase export inserts steam condensate pipeline. The utility model discloses be connected vapour and liquid separator's liquid phase and steam condensate pipeline, collect the retrieval and utilization with the comdenstion water in the noncondensable gas together with the steam condensate water, and do not get into MVR evaporation system's stoste transition jar, MVR evaporation system's load has been reduced, the heat energy comdenstion water in the noncondensable gas has obtained the retrieval and utilization, when the comdenstion water in the noncondensable gas passes through the second passageway simultaneously, preheat wherein ternary precursor waste water with first passageway heat transfer, make the waste heat in the noncondensable gas obtain the utilization, energy saving and consumption reduction has been realized, the system is simple in structure, high durability and convenient use, and good effects.
Description
Technical Field
The utility model relates to a ternary cathode material makes the field, especially relates to a ternary precursor waste water treatment noncondensable gas condensate water recovery system.
Background
At present, the lithium ion battery occupies a larger market share in the field of wide portable electronic equipment by virtue of the advantages of high specific capacity, long cycle life, low self-discharge rate, no memory effect, environmental friendliness and the like, and is generally recognized as the most development potential power battery for the electric vehicle. The ternary nickel-cobalt-manganese positive electrode material is an important lithium ion battery positive electrode material, has the important advantages of better performance than lithium cobaltate, lower cost than lithium cobaltate, higher energy density than lithium iron phosphate and the like, and gradually becomes a mainstream positive electrode material of an automobile power battery.
In the preparation process of the anode material, the preparation process of the precursor accounts for 60%, and the quality of the precursor directly influences the performance of the anode material. The common ternary cathode material is prepared by mixing and calcining secondary spherical particles formed by agglomeration of fine grains of nickel-cobalt-manganese hydroxide and lithium hydroxide. At present, the production of ternary precursor mainly adopts coprecipitation method, i.e. nickel salt, cobalt salt, manganese salt or aluminium salt is prepared into salt solution according to a certain proportion, nickel hydroxide cobalt manganese \ aluminium precipitate is formed under the condition of alkali liquor and complexing agent, and then the qualified product is obtained through the steps of centrifugal washing, slurrying, drying and the like. In the production of the ternary precursor material, the waste water in the production process mainly comprises mother liquor and washing water generated in the synthesis reaction, aging and washing working sections, and the waste water contains pollution factors such as ammonia nitrogen, alkali, heavy metals (nickel, cobalt, manganese) and the like.
At present, an MVR (mechanical Vapor recompression) evaporation system is adopted to treat wastewater generated in the production process of a ternary precursor material, in a conventional MVR evaporation system, non-condensed steam generated by a falling-film evaporator and a forced circulation evaporator is exhausted from a gas-liquid separation tank, and a liquid phase enters a stock solution transition tank of the MVR evaporation system for re-evaporation treatment, wherein the system mainly has the following problems: 1. the load of an MVR evaporation system is increased, and the energy consumption is increased; 2. the condensed water is not recycled, which causes waste.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the problems that in the prior art, when the MVR evaporation system is adopted to treat wastewater generated in the production process of a ternary precursor material, the non-condensed steam generated by the falling-film evaporator and the forced circulation evaporator is exhausted from a steam-liquid separation tank in a gas phase, and a liquid phase enters the MVR evaporation system to be evaporated again, so that the load of the MVR evaporation system is increased, the energy consumption is increased, and meanwhile, the condensate water is not recycled, so that the waste is caused, the ternary precursor wastewater treatment non-condensed steam condensate water recovery system is provided.
In order to realize the purpose, the utility model discloses a technical scheme be:
a ternary precursor wastewater treatment non-condensable gas condensate water recovery system, which comprises a non-condensable gas plate type heat exchanger, a gas-liquid separator, a falling film evaporator and a forced circulation evaporator, the non-condensable gas plate type heat exchanger comprises a first channel and a second channel exchanging heat with the first channel, the outlet of the first channel is connected with the falling-film evaporator, the falling-film evaporator is connected with the forced circulation evaporator, the falling film evaporator is provided with a first non-condensable gas outlet, the forced circulation evaporator is provided with a second non-condensable gas outlet and a third non-condensable gas outlet, the first non-condensable gas outlet, the second non-condensable gas outlet and the third non-condensable gas outlet are all connected with the inlet of the second channel through pipelines, the outlet of the second channel is connected with the gas-liquid separator, the gas-liquid separator comprises a liquid phase outlet and a gas phase outlet, and the liquid phase outlet is connected into the steam condensate pipeline.
And the ternary precursor wastewater enters the first channel of the non-condensable gas plate type heat exchanger from the inlet of the first channel.
Adopt a ternary precursor waste water treatment noncondensable gas condensate water recovery system, will vapour and liquid separator's liquid phase with steam condensate water pipeline is connected, collects the retrieval and utilization with the comdenstion water in the noncondensable gas together with steam condensate water, and does not get into MVR evaporating system's stoste transition jar, has reduced MVR evaporating system's load, and the heat energy comdenstion water in the noncondensable gas has obtained the retrieval and utilization, and the comdenstion water in the noncondensable gas passes through simultaneously during the second passageway, with first passageway heat transfer preheats ternary precursor waste water wherein for waste heat in the noncondensable gas has obtained the utilization, has realized energy saving and consumption reduction, this system simple structure, convenient to use, it is respond well.
Preferably, the ternary precursor wastewater treatment non-condensable gas condensate water recovery system further comprises a homogenizing tank, and the homogenizing tank is connected with the inlet of the first channel.
Preferably, the ternary precursor wastewater treatment non-condensable gas condensate water recovery system further comprises a distilled water plate type heat exchanger and a fresh steam plate type heat exchanger, wherein the first channel outlet is connected with the distilled water plate type heat exchanger, the distilled water plate type heat exchanger is connected with the fresh steam plate type heat exchanger, and the fresh steam plate type heat exchanger is connected with the falling film evaporator.
Preferably, the falling film evaporator is connected with a falling film separator.
Preferably, a crystallization separator is arranged on a circulation chain of the forced circulation evaporator, and the falling-film evaporator is connected with the crystallization separator.
Further preferably, the crystallization separator is connected with a cyclone separator, the cyclone separator is connected with a thickener, the thickener is connected with a centrifugal machine, the centrifugal machine is connected with a drying system, and the drying system is connected with a packaging system.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
a ternary precursor waste water treatment noncondensable gas condensate water recovery system, will vapour and liquid separator's liquid phase with steam condensate water pipeline is connected, collects the retrieval and utilization with the comdenstion water in the noncondensable gas together with steam condensate water, and does not get into MVR evaporating system's stoste transition jar, has reduced MVR evaporating system's load, and the heat energy comdenstion water in the noncondensable gas has obtained the retrieval and utilization, and the comdenstion water in the noncondensable gas passes through simultaneously during the second passageway, with first passageway heat transfer preheats ternary precursor waste water wherein for waste heat in the noncondensable gas has obtained the utilization, has realized energy saving and consumption reduction, this system simple structure, convenient to use, it is respond well.
Drawings
FIG. 1 is a schematic diagram of a ternary precursor wastewater treatment non-condensable gas condensate water recovery system.
The labels in the figure are: 1-a homogenizing pool, 2-a non-condensable gas plate type heat exchanger, 3-a gas-liquid separator, 4-a distilled water plate type heat exchanger, 5-a fresh steam plate type heat exchanger, 6-a falling film evaporator, 7-a falling film separator, 8-a forced circulation evaporator, 9-a crystallization separator, 10-a cyclone separator, 11-a thickener, 12-a centrifugal machine, 13-a drying system, 14-a packaging system, 15-a liquid phase outlet, 16-a gas phase outlet, 17-a first non-condensable gas outlet, 18-a second non-condensable gas outlet and 19-a third non-condensable gas outlet.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Examples
As shown in figure 1, a ternary precursor waste water treatment noncondensable gas condensate water recovery system, including homogeneity pond 1, noncondensable gas plate heat exchanger 2, vapour and liquid separator 3, distilled water plate heat exchanger 4, bright steam plate heat exchanger 5, falling film evaporator 6 and forced circulation evaporimeter 8.
The non-condensable gas plate heat exchanger 2 comprises a first channel and a second channel for exchanging heat with the first channel, the homogenizing pool 1 is connected with an inlet of the first channel, ternary precursor wastewater is firstly treated by the homogenizing pool 1 and then sent into the non-condensable gas plate heat exchanger 2, an outlet of the first channel is connected with the distilled water plate heat exchanger 4, the distilled water plate heat exchanger 4 is connected with the fresh steam plate heat exchanger 5, the fresh steam plate heat exchanger 5 is connected with the falling film evaporator 6, and the falling film evaporator 6 is connected with the falling film separator 7.
Be equipped with crystallization separator 9 on the circulation chain of forced circulation evaporimeter 8, falling film evaporimeter 6 is connected crystallization separator 9, be equipped with first noncondensable gas export 17 on the falling film evaporimeter 6, be equipped with second noncondensable gas export 18 and third noncondensable gas export 19 on the forced circulation evaporimeter 8, first noncondensable gas export 17 second noncondensable gas export 18 with third noncondensable gas export 19 all is through the pipe connection the entry of second passageway, the exit linkage of second passageway gas-liquid separator 3, gas-liquid separator 3 includes liquid phase export 15 and gaseous phase export 16, liquid phase export 15 connects into steam condensate pipe.
The crystallization separator 9 is connected with a cyclone separator 10, the cyclone separator 10 is connected with a thickener 11, the thickener 11 is connected with a centrifuge 12, the centrifuge 12 is connected with a drying system 13, and the drying system 13 is connected with a packaging system 14.
The non-condensable gas plate type heat exchanger 2, the distilled water plate type heat exchanger 4 and the fresh steam plate type heat exchanger 5 can preheat ternary precursor wastewater; after treatment, condensed water in the non-condensable gas enters the steam condensed water pipeline through the liquid phase outlet 15 for collection and utilization, and the non-condensable gas is discharged through the gas phase outlet 16.
A ternary precursor waste water treatment noncondensable gas condensate water recovery system, will vapour and liquid separator 3's liquid phase with steam condensate water pipeline is connected, collects the retrieval and utilization with the comdenstion water in the noncondensable gas together with steam condensate water, and does not get into MVR evaporating system's stoste transition jar, has reduced MVR evaporating system's load, and the heat energy comdenstion water in the noncondensable gas has obtained the retrieval and utilization, and the comdenstion water in the noncondensable gas passes through simultaneously during the second passageway, with first passageway heat transfer preheats ternary precursor waste water wherein for waste heat in the noncondensable gas has obtained the utilization, has realized energy saving and consumption reduction, this system simple structure, convenient to use, it is respond well.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The ternary precursor wastewater treatment non-condensable gas condensate water recovery system is characterized by comprising a non-condensable gas plate type heat exchanger (2), a gas-liquid separator (3), a falling-film evaporator (6) and a forced circulation evaporator (8), wherein the non-condensable gas plate type heat exchanger (2) comprises a first channel and a second channel for heat exchange with the first channel, an outlet of the first channel is connected with the falling-film evaporator (6), the falling-film evaporator (6) is connected with the forced circulation evaporator (8), a first non-condensable gas outlet (17) is formed in the falling-film evaporator (6), a second non-condensable gas outlet (18) and a third non-condensable gas outlet (19) are formed in the forced circulation evaporator (8), the first non-condensable gas outlet (17), the second non-condensable gas outlet (18) and the third non-condensable gas outlet (19) are all connected with an inlet of the second channel through pipelines, the outlet of the second channel is connected with the gas-liquid separator (3), the gas-liquid separator (3) comprises a liquid phase outlet (15) and a gas phase outlet (16), and the liquid phase outlet (15) is connected into a steam condensate pipeline.
2. The ternary precursor wastewater treatment non-condensable gas condensate water recovery system according to claim 1, further comprising a homogenizing tank (1), wherein the homogenizing tank (1) is connected with an inlet of the first channel.
3. The ternary precursor wastewater treatment non-condensable gas condensate water recovery system according to claim 1, further comprising a distilled water plate type heat exchanger (4) and a fresh steam plate type heat exchanger (5), wherein the first channel outlet is connected with the distilled water plate type heat exchanger (4), the distilled water plate type heat exchanger (4) is connected with the fresh steam plate type heat exchanger (5), and the fresh steam plate type heat exchanger (5) is connected with the falling film evaporator (6).
4. The ternary precursor wastewater treatment non-condensable gas condensate water recovery system according to claim 1, wherein the falling film evaporator (6) is connected with a falling film separator (7).
5. The ternary precursor wastewater treatment non-condensable gas condensate water recovery system according to any one of the claims 1 to 4, wherein a crystallization separator (9) is arranged on the circulation chain of the forced circulation evaporator (8), and the falling film evaporator (6) is connected with the crystallization separator (9).
6. The ternary precursor wastewater treatment non-condensable gas condensate water recovery system according to claim 5, wherein the crystallization separator (9) is connected with a cyclone separator (10), the cyclone separator (10) is connected with a thickener (11), the thickener (11) is connected with a centrifuge (12), the centrifuge (12) is connected with a drying system (13), and the drying system (13) is connected with a packaging system (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123208430.7U CN216737937U (en) | 2021-12-20 | 2021-12-20 | Ternary precursor waste water treatment noncondensable gas condensate recovery system |
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| CN202123208430.7U CN216737937U (en) | 2021-12-20 | 2021-12-20 | Ternary precursor waste water treatment noncondensable gas condensate recovery system |
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2021
- 2021-12-20 CN CN202123208430.7U patent/CN216737937U/en active Active
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