CN103551064A - Method for automatically regulating concentration of ethanol - Google Patents

Method for automatically regulating concentration of ethanol Download PDF

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Publication number
CN103551064A
CN103551064A CN201310540568.8A CN201310540568A CN103551064A CN 103551064 A CN103551064 A CN 103551064A CN 201310540568 A CN201310540568 A CN 201310540568A CN 103551064 A CN103551064 A CN 103551064A
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Prior art keywords
solution
concentration
volume
blend tank
ethanol
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CN201310540568.8A
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Chinese (zh)
Inventor
卢佩
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CHANGZHOU MACRO-E ENERGY-SAVING TECHNOLOGY Co Ltd
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CHANGZHOU MACRO-E ENERGY-SAVING TECHNOLOGY Co Ltd
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Priority to CN201310540568.8A priority Critical patent/CN103551064A/en
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Abstract

The invention relates to the technical field of ethanol blending and in particular relates to a method for automatically regulating concentration of ethanol. The method for automatically regulating the concentration of the ethanol comprises the following steps: (1) mounting a liquid level transmitter (LC) on a blending tank, so as to measure the volume of a solution in the blending tank (the cross section area of the blending tank is known); (2) mounting a concentration meter on a circulating pipeline, so as to measure the concentration of the solution in the blending tank. The method for automatically regulating the concentration of the ethanol can realize blending of specified ethanol concentration, the concentration of an input solution can be detected, blending of an ethanol solution is facilitated, various blending requirements can be met, the operation is easy, blending is rapid, the cost is low, and the using effect is good.

Description

Concentration of alcohol automatic governing method
Technical field
The present invention relates to ethanol proportion technique field, especially a kind of concentration of alcohol automatic governing method.
Background technology
In extracting technique of Chinese medicine, ethanol is as extracting solvent, and its concentration plays conclusive effect to the quality of the recovery rate of active ingredient and even Chinese medicine; In order to save alcohol consumption reduction, ethanol usually recycles, and first as solvent, leaches active ingredient that is:, then by concentration process, reclaims Diluted Alcohol, then obtains dense ethanol (reclaiming ethanol) by rectifying.Therefore ethanol allotment is normally carried out the accurately process of allotment by the recovery ethanol of concentration the unknown (or applying mechanically ethanol) and purified water according to the concentration of process requirements.Technological requirement distributing precision is high on the one hand, on the other hand, reclaims concentration of alcohol the unknown and changes, and this brings difficulty to accurate control of dynamically allotment.
Realize the method for solution automatic governing, many employing LOAD CELLSs control weight, or flowmeter at present detects the modes such as flow, needs the concentration of known added solution simultaneously.In food processing, liquid preparation and Chemical Manufacture, all have a wide range of applications.But above method cost is high, equipment installation requirement is high, many traditional Chinese medicine enterprises cannot be accepted.
In addition, in actual allocation process, owing to being subject to the impact of instrument measurement error, environment temperature and pipeline residual liquid, all can there is larger error in the Mathematical Modeling of which kind of concocting method and actual proportioning result.For this reason, people supplement the deficiency of Mathematical Modeling conventionally with additional predicting means, or object model is revised online.
Summary of the invention
Large in order to overcome existing concentration of alcohol mixing ratio error, and the high deficiency of production cost, the invention provides a kind of concentration of alcohol automatic governing method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of concentration of alcohol automatic governing method, is characterized in that:
(1), fluid level transmitter (LC) is installed on blend tank, in order to measure liquor capacity in blend tank (blend tank cross-sectional area is known); Densimeter is installed on circulation line, in order to measure solution concentration in blend tank.
(2), establishing allotment solution aimed concn is that target volume is
Figure 781323DEST_PATH_IMAGE001
; The solution concentration existing at present in blend tank is
Figure 698463DEST_PATH_IMAGE002
, volume is
Figure 478200DEST_PATH_IMAGE003
, owing to being the surplus solution of last allotment, therefore ,
Figure 969673DEST_PATH_IMAGE003
for known; The concentration of the solution 1 of allocating is
Figure 792135DEST_PATH_IMAGE004
, volume is , the concentration of solution 2 is
Figure 789227DEST_PATH_IMAGE006
, volume is
Figure 458106DEST_PATH_IMAGE007
..., solution
Figure 982628DEST_PATH_IMAGE008
concentration be
Figure 736957DEST_PATH_IMAGE009
, volume is .Their relation can be by following equation expression:
Figure 528513DEST_PATH_IMAGE011
Known when solution concentration, according to " right-angled intersection method ", realize by multiple percentage concentration solution mixed preparing desired concn solution.If for concentration solution concentration from high to low,
Figure 199983DEST_PATH_IMAGE013
for concentration solution from high to low volume required,
Figure 255532DEST_PATH_IMAGE014
for wanting to join the concentration of solution,
Figure 899003DEST_PATH_IMAGE015
for wanting to join the volume of solution.If
Figure 234170DEST_PATH_IMAGE016
all be greater than
Figure 494250DEST_PATH_IMAGE014
,
Figure 573064DEST_PATH_IMAGE017
all be less than
Figure 71042DEST_PATH_IMAGE014
, wherein for a kind of solution concentration wherein, have
Figure 324485DEST_PATH_IMAGE019
Figure 206991DEST_PATH_IMAGE020
…
Figure 90633DEST_PATH_IMAGE021
Figure 33181DEST_PATH_IMAGE022
…
Figure 173624DEST_PATH_IMAGE024
:
In formula
Figure 759643DEST_PATH_IMAGE026
be required solution
Figure 216032DEST_PATH_IMAGE027
volume.
Owing to having carried volume to be in blend tank when obtaining each solution concentration
Figure 440340DEST_PATH_IMAGE028
solution, so, also need volume to be
Figure 501837DEST_PATH_IMAGE029
raw material.
(3), the concentration of automatic acquisition input solution, method is: to delivered volume in blend tank, be first
Figure 317346DEST_PATH_IMAGE030
solution
Figure 729873DEST_PATH_IMAGE031
(
Figure 757872DEST_PATH_IMAGE030
<
Figure 470613DEST_PATH_IMAGE032
), after utilizing densimeter to measure after mixing to mix, solution concentration is
Figure 660286DEST_PATH_IMAGE033
,
Figure 560109DEST_PATH_IMAGE034
can obtain by following formula:
Figure 906645DEST_PATH_IMAGE035
To delivered volume in blend tank, be again
Figure 208314DEST_PATH_IMAGE036
solution 2(
Figure 100046DEST_PATH_IMAGE036
<
Figure 487165DEST_PATH_IMAGE032
), after utilizing densimeter to measure after mixing to mix, solution concentration is
Figure 856967DEST_PATH_IMAGE037
,
Figure 278721DEST_PATH_IMAGE006
can obtain by following formula:
Figure 75776DEST_PATH_IMAGE038
By that analogy, to delivered volume in blend tank, be
Figure 684611DEST_PATH_IMAGE039
solution
Figure 389262DEST_PATH_IMAGE027
(
Figure 399944DEST_PATH_IMAGE028
< ),
Figure 745922DEST_PATH_IMAGE040
can obtain by following formula:
Figure 457526DEST_PATH_IMAGE041
If blend tank cross-sectional area is
Figure 322714DEST_PATH_IMAGE042
(
Figure 992730DEST_PATH_IMAGE042
for fixed value), the liquid level of measuring is in real time
Figure 576158DEST_PATH_IMAGE043
, liquor capacity
Figure 825874DEST_PATH_IMAGE044
.Above formula can be expressed as by liquid level:
。
The invention has the beneficial effects as follows, this concentration of alcohol automatic governing method can realize specifying the proportioning of concentration of alcohol, and can detect the concentration of input solution, facilitate the allotment of ethanolic solution, meet the requirement of various proportionings, convenient use, allotment is fast, and with low cost, result of use is good.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is principle schematic of the present invention.
The specific embodiment
If Fig. 1 is structural representation of the present invention, a kind of concentration of alcohol automatic governing method, is characterized in that:
(1), fluid level transmitter (LC) is installed on blend tank, in order to measure liquor capacity in blend tank (blend tank cross-sectional area is known); Densimeter is installed on circulation line, in order to measure solution concentration in blend tank.
(2), establishing allotment solution aimed concn is
Figure 652064DEST_PATH_IMAGE014
, target volume is
Figure 722789DEST_PATH_IMAGE001
; The solution concentration existing at present in blend tank is , volume is
Figure 147134DEST_PATH_IMAGE003
, owing to being the surplus solution of last allotment, therefore
Figure 627794DEST_PATH_IMAGE002
,
Figure 712380DEST_PATH_IMAGE003
for known; The concentration of the solution 1 of allocating is
Figure 569477DEST_PATH_IMAGE004
, volume is
Figure 263764DEST_PATH_IMAGE005
, the concentration of solution 2 is
Figure 446483DEST_PATH_IMAGE006
, volume is
Figure 491800DEST_PATH_IMAGE007
..., solution
Figure 887009DEST_PATH_IMAGE008
concentration be , volume is
Figure 55002DEST_PATH_IMAGE010
.Their relation can be by following equation expression:
Figure 322035DEST_PATH_IMAGE046
Known when solution concentration, according to " right-angled intersection method ", realize by multiple percentage concentration solution mixed preparing desired concn solution.If
Figure 52094DEST_PATH_IMAGE047
for concentration solution concentration from high to low,
Figure 455393DEST_PATH_IMAGE048
for concentration solution from high to low volume required,
Figure 714337DEST_PATH_IMAGE014
for wanting to join the concentration of solution,
Figure 750557DEST_PATH_IMAGE049
for wanting to join the volume of solution.If
Figure 487569DEST_PATH_IMAGE050
all be greater than
Figure 10954DEST_PATH_IMAGE014
,
Figure 971957DEST_PATH_IMAGE051
all be less than
Figure 948003DEST_PATH_IMAGE014
, wherein for a kind of solution concentration wherein, have
Figure 998501DEST_PATH_IMAGE020
…
Figure 727423DEST_PATH_IMAGE021
…
Figure 341441DEST_PATH_IMAGE024
:
Figure 338085DEST_PATH_IMAGE025
In formula
Figure 220590DEST_PATH_IMAGE026
be required solution volume.
Owing to having carried volume to be in blend tank when obtaining each solution concentration solution, so, also need volume to be
Figure 484715DEST_PATH_IMAGE029
raw material.
(3), the concentration of automatic acquisition input solution, method is: to delivered volume in blend tank, be first
Figure 905332DEST_PATH_IMAGE030
solution
Figure 909060DEST_PATH_IMAGE031
(
Figure 756931DEST_PATH_IMAGE030
<
Figure 682161DEST_PATH_IMAGE032
), after utilizing densimeter to measure after mixing to mix, solution concentration is
Figure 437628DEST_PATH_IMAGE033
,
Figure 764704DEST_PATH_IMAGE034
can obtain by following formula:
Figure 49055DEST_PATH_IMAGE035
To delivered volume in blend tank, be again
Figure 743472DEST_PATH_IMAGE036
solution 2(
Figure 505892DEST_PATH_IMAGE036
<
Figure 687475DEST_PATH_IMAGE032
), after utilizing densimeter to measure after mixing to mix, solution concentration is
Figure 673885DEST_PATH_IMAGE037
,
Figure 573708DEST_PATH_IMAGE006
can obtain by following formula:
By that analogy, to delivered volume in blend tank, be
Figure 707066DEST_PATH_IMAGE039
solution
Figure 333220DEST_PATH_IMAGE027
( <
Figure 355719DEST_PATH_IMAGE032
), can obtain by following formula:
Figure 308949DEST_PATH_IMAGE041
If blend tank cross-sectional area is
Figure 698211DEST_PATH_IMAGE042
(
Figure 871703DEST_PATH_IMAGE042
for fixed value), the liquid level of measuring is in real time , liquor capacity
Figure 381499DEST_PATH_IMAGE044
.Above formula can be expressed as by liquid level:
。
The concentration of target ethanol
Figure 923656DEST_PATH_IMAGE014
and volume , establishing
Figure 724439DEST_PATH_IMAGE001
general 3.3
Figure 307867DEST_PATH_IMAGE052
, be 75%.Concentration after having allocated if last
Figure 74014DEST_PATH_IMAGE053
be 74.5%, ethanol volume in current blend tank
Figure 383773DEST_PATH_IMAGE003
be 0.6
Figure 736388DEST_PATH_IMAGE052
.First by PLC, controlled to open and reclaim ethanol valve and delivery pump is carried in blend tank
Figure 789795DEST_PATH_IMAGE054
recovery ethanol.Then the mixed concentration of alcohol of working concentration instrumentation amount
Figure 629575DEST_PATH_IMAGE055
, reclaim concentration of alcohol
Figure 641393DEST_PATH_IMAGE056
=
Figure 933834DEST_PATH_IMAGE057
.According to formula
Figure 790932DEST_PATH_IMAGE046
draw so, allocate the volume of required recovery ethanol
Figure 667938DEST_PATH_IMAGE059
, the recovery ethanol volume needing for the second time
Figure 713254DEST_PATH_IMAGE060
; The volume that needs purified water
Figure 639622DEST_PATH_IMAGE061
.By PLC, controlled to open and reclaim ethanol valve and delivery pump is carried in blend tank
Figure 188415DEST_PATH_IMAGE062
recovery ethanol, finally open purified water valve and delivery pump and input volume in blend tank
Figure 276457DEST_PATH_IMAGE063
purified water.
Concentration after having allocated if last
Figure 323916DEST_PATH_IMAGE053
be 74.5%, ethanol volume in current blend tank
Figure 257237DEST_PATH_IMAGE003
be 0.6
Figure 926116DEST_PATH_IMAGE052
.The amount that needs allotment
Figure 716217DEST_PATH_IMAGE001
be 3.3
Figure 204967DEST_PATH_IMAGE052
,
Figure 207558DEST_PATH_IMAGE014
be 75%.
1, " finished product ethanol+purified water " pattern:
1. parameter setting: input ethanol allotment amount
Figure 262102DEST_PATH_IMAGE001
with required allotment concentration
Figure 426367DEST_PATH_IMAGE014
if finished product concentration of alcohol does not arrange, by by 95% operation or keep last value.
2. PLC will automatically calculate and prepare.
First calculate the finished product amount of alcohol that need add
Figure 667993DEST_PATH_IMAGE064
,
Figure 739854DEST_PATH_IMAGE065
for finished product concentration of alcohol.Open corresponding pump and valve input finished product ethanol, read in real time the level value of blend tank
Figure 117746DEST_PATH_IMAGE066
, and automatically calculate
Figure 718491DEST_PATH_IMAGE067
, when
Figure 463724DEST_PATH_IMAGE068
time, close respective pump and valve.Liquid level is now
Figure 808118DEST_PATH_IMAGE069
.
Then calculate the purifying water yield that need add
Figure 368412DEST_PATH_IMAGE070
.Open again corresponding pump and valve input purified water, read in real time the level value of blend tank
Figure 874480DEST_PATH_IMAGE066
, when
Figure 90698DEST_PATH_IMAGE071
time, close respective pump and valve.
3. read concentration value: add
Figure 504362DEST_PATH_IMAGE072
with
Figure 637272DEST_PATH_IMAGE073
after, starting the self-loopa of blend tank allotment ethanol, time delay a period of time (stablizing) is read concentration measurement
Figure 314241DEST_PATH_IMAGE074
.
If 4. concentration measurement
Figure 752175DEST_PATH_IMAGE075
, meeting allowable error, allotment finishes.
If
Figure 969530DEST_PATH_IMAGE076
, to blend tank input purified water
Figure 176520DEST_PATH_IMAGE077
,
Figure 289970DEST_PATH_IMAGE078
, restart circulation, read
Figure 746359DEST_PATH_IMAGE074
, until
Figure 970667DEST_PATH_IMAGE075
, allotment finishes.
If
Figure 297743DEST_PATH_IMAGE079
, to blend tank input finished product ethanol
Figure 113252DEST_PATH_IMAGE080
.Restart circulation, read
Figure 260200DEST_PATH_IMAGE074
, until
Figure 570090DEST_PATH_IMAGE075
, allotment finishes.
2, " recovery ethanol+purified water " pattern:
1. parameter setting: input ethanol allotment amount
Figure 751672DEST_PATH_IMAGE001
with required allotment concentration
Figure 206924DEST_PATH_IMAGE014
.
2. PLC will automatically calculate and prepare.
3. obtain recovery concentration of alcohol: first by adding finished product ethanol to calculate the recovery amount of alcohol that need add
Figure 637906DEST_PATH_IMAGE081
,
Figure 204016DEST_PATH_IMAGE065
for finished product concentration of alcohol.Order .Open respective pump and valve, to blend tank input, reclaim ethanol, measuring method is the same, works as input after, close corresponding pump and valve.Start blend tank self-loopa, after time delay a period of time, read concentration value
Figure 518957DEST_PATH_IMAGE084
.Reclaim concentration of alcohol
Figure 888758DEST_PATH_IMAGE085
.
4. calculate and reclaim amount of alcohol added
Figure 44933DEST_PATH_IMAGE086
, the amount that need to add is again
Figure 373146DEST_PATH_IMAGE087
, the purifying water yield that need add .And automatically add respectively
Figure 889895DEST_PATH_IMAGE089
with
Figure 681003DEST_PATH_IMAGE073
.
5. read concentration value: start the self-loopa of blend tank allotment ethanol, time delay a period of time (stablizing) is read concentration value
Figure 648959DEST_PATH_IMAGE084
.
If meet error requirements, allotment finishes, otherwise by " finished product ethanol+purified water " pattern 4. method automatically revise.
" Diluted Alcohol+purified water " pattern is identical with " reclaiming ethanol+purified water " mode method, need to first obtain the concentration of Diluted Alcohol." finished product ethanol+Diluted Alcohol " pattern, is the concentration that will first obtain Diluted Alcohol, and the method for calculating is first by adding water, to calculate after the amount that need to add, and adds
Figure 745091DEST_PATH_IMAGE090
amount of calculation, then read concentration measurement, calculate the concentration of Diluted Alcohol, other is identical with above method.

Claims (1)

1. a concentration of alcohol automatic governing method, is characterized in that:
(1), fluid level transmitter (LC) is installed on blend tank, in order to measure liquor capacity in blend tank (blend tank cross-sectional area is known); Densimeter is installed on circulation line, in order to measure solution concentration in blend tank.
(2), establishing allotment solution aimed concn is
Figure 978069DEST_PATH_IMAGE001
, target volume is
Figure 252DEST_PATH_IMAGE002
; The solution concentration existing at present in blend tank is
Figure 651813DEST_PATH_IMAGE003
, volume is
Figure 431550DEST_PATH_IMAGE004
, owing to being the surplus solution of last allotment, therefore
Figure 889076DEST_PATH_IMAGE003
,
Figure 703449DEST_PATH_IMAGE004
for known; The concentration of the solution 1 of allocating is
Figure 525911DEST_PATH_IMAGE005
, volume is
Figure 855261DEST_PATH_IMAGE006
, the concentration of solution 2 is
Figure 54162DEST_PATH_IMAGE007
, volume is
Figure 723040DEST_PATH_IMAGE008
..., solution
Figure 716404DEST_PATH_IMAGE009
concentration be
Figure 46234DEST_PATH_IMAGE010
, volume is
Figure 48825DEST_PATH_IMAGE011
.Their relation can be by following equation expression:
Figure 572210DEST_PATH_IMAGE012
Known when solution concentration, according to " right-angled intersection method ", realize by multiple percentage concentration solution mixed preparing desired concn solution.If
Figure 798792DEST_PATH_IMAGE013
for concentration solution concentration from high to low,
Figure 40418DEST_PATH_IMAGE014
for concentration solution from high to low volume required,
Figure 581120DEST_PATH_IMAGE015
for wanting to join the concentration of solution,
Figure 21329DEST_PATH_IMAGE016
for wanting to join the volume of solution.If all be greater than ,
Figure 492128DEST_PATH_IMAGE018
all be less than
Figure 724526DEST_PATH_IMAGE015
, wherein
Figure 496173DEST_PATH_IMAGE019
for a kind of solution concentration wherein, have
Figure 10593DEST_PATH_IMAGE020
Figure 893098DEST_PATH_IMAGE021
…
Figure 245582DEST_PATH_IMAGE022
Figure 188130DEST_PATH_IMAGE023
…
:
Figure 581569DEST_PATH_IMAGE026
In formula
Figure 757335DEST_PATH_IMAGE027
be required solution
Figure 682566DEST_PATH_IMAGE028
volume.
Owing to having carried volume to be in blend tank when obtaining each solution concentration
Figure 906874DEST_PATH_IMAGE029
solution, so, also need volume to be
Figure 296267DEST_PATH_IMAGE030
raw material.
(3), the concentration of automatic acquisition input solution, method is: to delivered volume in blend tank, be first
Figure 315038DEST_PATH_IMAGE031
solution
Figure 727565DEST_PATH_IMAGE032
( <
Figure 500928DEST_PATH_IMAGE033
), after utilizing densimeter to measure after mixing to mix, solution concentration is
Figure 956180DEST_PATH_IMAGE034
,
Figure 590424DEST_PATH_IMAGE035
can obtain by following formula:
Figure 218852DEST_PATH_IMAGE036
To delivered volume in blend tank, be again solution 2(
Figure 146673DEST_PATH_IMAGE037
< ), after utilizing densimeter to measure after mixing to mix, solution concentration is
Figure 700331DEST_PATH_IMAGE038
,
Figure 856506DEST_PATH_IMAGE007
can obtain by following formula:
Figure 715878DEST_PATH_IMAGE039
By that analogy, to delivered volume in blend tank, be
Figure 324714DEST_PATH_IMAGE040
solution
Figure 232627DEST_PATH_IMAGE041
( <
Figure 775046DEST_PATH_IMAGE033
),
Figure 871178DEST_PATH_IMAGE042
can obtain by following formula:
If blend tank cross-sectional area is
Figure 510287DEST_PATH_IMAGE044
(
Figure 649144DEST_PATH_IMAGE044
for fixed value), the liquid level of measuring is in real time
Figure 294889DEST_PATH_IMAGE045
, liquor capacity
Figure 810184DEST_PATH_IMAGE046
.Above formula can be expressed as by liquid level:
Figure 529878DEST_PATH_IMAGE047
。
CN201310540568.8A 2013-11-05 2013-11-05 Method for automatically regulating concentration of ethanol Pending CN103551064A (en)

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN106422858A (en) * 2016-11-04 2017-02-22 苏州浙远自动化工程技术有限公司 Automatic alcohol concentration regulating device and method
CN107281972A (en) * 2017-05-11 2017-10-24 广东卓信环境科技股份有限公司 The standard control method and device that material is prepared
CN107970472A (en) * 2016-10-21 2018-05-01 伊西康公司 Carried out disinfection agent dynamic dosage by concentrate compensation of degrading
CN109012444A (en) * 2018-08-02 2018-12-18 迪瑞医疗科技股份有限公司 A kind of concentration washing lotion automatic mixing system and matching method
CN109364787A (en) * 2018-11-19 2019-02-22 云南昆船环保技术有限公司 A kind of alcohol concentration auto-scheduling system and its concocting method
CN110302715A (en) * 2019-05-31 2019-10-08 江苏哈工药机科技股份有限公司 A kind of cannboid extraction ethyl alcohol intelligent allocation system and its intelligent allocation method
CN114522552A (en) * 2022-02-08 2022-05-24 格林爱科(荆门)新能源材料有限公司 Preparation method of high-concentration nickel-cobalt binary solution

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107970472A (en) * 2016-10-21 2018-05-01 伊西康公司 Carried out disinfection agent dynamic dosage by concentrate compensation of degrading
CN106422858A (en) * 2016-11-04 2017-02-22 苏州浙远自动化工程技术有限公司 Automatic alcohol concentration regulating device and method
CN107281972A (en) * 2017-05-11 2017-10-24 广东卓信环境科技股份有限公司 The standard control method and device that material is prepared
CN107281972B (en) * 2017-05-11 2020-10-27 广东卓信环境科技股份有限公司 Standard control method and device for material preparation
CN109012444A (en) * 2018-08-02 2018-12-18 迪瑞医疗科技股份有限公司 A kind of concentration washing lotion automatic mixing system and matching method
CN109364787A (en) * 2018-11-19 2019-02-22 云南昆船环保技术有限公司 A kind of alcohol concentration auto-scheduling system and its concocting method
CN110302715A (en) * 2019-05-31 2019-10-08 江苏哈工药机科技股份有限公司 A kind of cannboid extraction ethyl alcohol intelligent allocation system and its intelligent allocation method
CN114522552A (en) * 2022-02-08 2022-05-24 格林爱科(荆门)新能源材料有限公司 Preparation method of high-concentration nickel-cobalt binary solution

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Application publication date: 20140205