CN105536636A - Stripping liquid mixed acid recovery and measurement method and system - Google Patents
Stripping liquid mixed acid recovery and measurement method and system Download PDFInfo
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- CN105536636A CN105536636A CN201510891053.1A CN201510891053A CN105536636A CN 105536636 A CN105536636 A CN 105536636A CN 201510891053 A CN201510891053 A CN 201510891053A CN 105536636 A CN105536636 A CN 105536636A
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- concentration
- mea
- stripper
- nitration mixture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
- B01F35/8821—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances involving controlling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/022—Liquids
- G01N2291/0224—Mixtures of three or more liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02809—Concentration of a compound, e.g. measured by a surface mass change
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a stripping liquid mixed acid recovery and measurement method and system. The method includes the steps of: 1) receiving regenerated stripping liquid, measuring the concentration of MEA with an ultrasonic concentration meter 1; 2) adding MEA component, using the ultrasonic concentration meter 1 to measure the MEA concentration, if the concentration is higher than 23.75%, adding BDG, if the concentration is less than 23.75%, adding MEA, then using the ultrasonic concentration meter 1 to measure the MEA concentration, and repeating the step until the MEA concentration is 23.75%; and 3) adding pure water, using an ultrasonic concentration meter 2 to measure the pure water concentration, and performing blending to a pure water concentration of 20%, thus obtaining a stripping liquid finished product. The structure of the system comprises an electronic balance (2), the ultrasonic concentration meter 1 (3), the ultrasonic concentration meter (4) and a magnetic pump (5). The method and the system provided by the invention employ two ultrasonic concentration meters to measure the concentration of MEA and pure water in the stripping liquid respectively, and then calculate the concentration of BDG according to the result, thereby improving the concentration accuracy of the stripping liquid finished product and reducing the cost.
Description
[technical field]
The present invention relates to stripper recovery technology field, specifically a kind of stripper reclaims nitration mixture and measuring method and system.
[background technology]
At present, in liquid crystal panel production process, stripper can be used in a large number.Stripper by separating and removing impurities after distillation, only can retain principle active component, recycling.The stripping liquid for regenerating of recycling, because concentration does not meet need of production, therefore, again through nitration mixture process, by adding necessary composition, must carry out the finished product stripper that proportioning again becomes qualified.
Existing nitration mixture process, first receives stripping liquid for regenerating, uses optical profile type densimeter, measures the concentration of MEA and BDG wherein, then according to measurement result, adds MEA, BDG or the pure water of corresponding weight in order, go out finished product stripper with proportioning.Finally in order to determine that whether finished product stripper is qualified, also needing to reuse same optical profile type densimeter, measuring the concentration of MEA, BDG wherein, pure water, if defective, after can only discarding, again regenerating process.
In addition, in existing system, ensure that two large emphasis elements of stripper quality are electronic scale and optical profile type densimeter.Wherein, electronic scale can reach ± high accuracy of 0.01Kg, stability is also very high, and the life-span is very long; But optical profile type densimeter is because self peculiar factor, and certainty of measurement is relatively low, usually ensure precision can only reach ± 1%, price is also extremely expensive, thus becomes the stable the biggest factor of influential system.And because the associated components life-spans such as the light source bulb in optical system, shadow shield, optical splitter, lens are short, must regularly replace light source bulb, the first-class parts of optical frames, operation cost is high.
[summary of the invention]
Object of the present invention is exactly will solve above-mentioned deficiency and provide a kind of stripper to reclaim nitration mixture and measuring method and system, traditional optical profile type densimeter is substituted by adopting ultrasonic wave densimeter, namely two ultrasonic wave densimeters are used to measure the concentration of MEA in stripper and pure water respectively, the concentration of BDG is calculated again according to result, thus improve the concentration precision of finished product stripper, reduce cost.
Design a kind of stripper for achieving the above object and reclaim nitration mixture and measuring method, comprise the following steps:
1) receive stripping liquid for regenerating, only containing MEA and BDG two kinds of compositions in this stripping liquid for regenerating, use ultrasonic wave densimeter one to measure the concentration of MEA, because in stripper regenerative process, MEA is excluded, the concentration therefore recorded is on the low side compared with finished product stripper;
2) add MEA composition, use ultrasonic wave densimeter one to measure MEA concentration, if concentration is higher than 23.75%, then add BDG, if concentration is lower than 23.75%, then add MEA, re-use ultrasonic wave densimeter one and measure MEA concentration, repeat this step, until MEA concentration is 23.75%;
3) add pure water, use ultrasonic wave densimeter two to measure pure water concentration, proportioning to pure water concentration is 20%, and namely the concentration of MEA, BDG, pure water is respectively MEA19%, BDG61%, pure water 20%, and get product stripper.
Step 2) in, the addition of MEA or BDG adopts electronic scale to measure.
Step 3) in, after each constituent concentration of finished product stripper is qualified, the finished product stripper in nitration mixture groove is transferred in pan tank stand-by.
Present invention also offers a kind of stripper and reclaim nitration mixture and measuring system, comprise electronic scale 2, ultrasonic wave densimeter 1, ultrasonic wave densimeter 24 and magnetic drive pump 5, described electronic scale 2 is located on nitration mixture groove 10, the arrival end of described nitration mixture groove 10 connects MEA pipeline 6 respectively, BDG pipeline 7, pure water pipeline 8, the port of export of described nitration mixture groove 10 connects ultrasonic wave densimeter 1 by pipeline, ultrasonic wave densimeter 24, be connected in parallel between described ultrasonic wave densimeter 1 and ultrasonic wave densimeter 24, described ultrasonic wave densimeter 1, the other end of ultrasonic wave densimeter 24 connects magnetic drive pump 5 arrival end by pipeline.
Described nitration mixture groove 10 bottom is provided with waste discharge mouth, and described waste discharge mouth connects waste discharge pump 9 by pipeline, and the other end of described waste discharge pump 9 connects waste liquid tank 9 by pipeline.
Described magnetic drive pump 5 tilting is installed, and the port of export of described magnetic drive pump 5 connects waste discharge pump 9 by pipeline.
Described MEA pipeline 6, BDG pipeline 7, pure water pipeline 8 are all provided with electronic valve.
Described waste discharge pump 9 is arranged on the minimum point that stripper reclaims nitration mixture and measuring system.
The horizontal pipe that described stripper reclaims nitration mixture and measuring system all adopts the gradient to install, and its gradient is 5:100.
Compared with the existing technology, tool has the following advantages in the present invention:
(1) ultrasonic wave densimeter is adopted to substitute traditional optical profile type densimeter, namely 2 ultrasonic wave densimeters are used to measure the concentration of MEA in stripper and pure water respectively, calculate the concentration of BDG again according to result, improve the concentration precision of finished product stripper, reduce cost;
(2) ultrasonic wave densimeter is without the need to regularly surely changing assembly, and without the need to follow-up operating cost, has saved the operating cost of optical profile type densimeter periodic replacement assembly;
(3) maintainability of ultrasonic wave densimeter is far away higher than optical profile type densimeter, reduces the risk of the system failure, improves the production efficiency of equipment, and equipment when safeguarding that reduces stops safeguarding risk;
(4) improve the structure of existing system, traditional air driven pump is replaced with big flow magnetic pump, reduce nitration mixture time and delivery time, improve production output;
(5) improve the pipeline of existing system, ensure that noresidue stripper in pipeline, improve recovery quality;
(6) add waste discharge pump, thus can Liquid Residue in emptying nitration mixture groove and pipeline, avoid the impact on concentration during nitration mixture again.
[accompanying drawing explanation]
Fig. 1 is the principle schematic that in the present invention, stripper reclaims nitration mixture and measuring system;
In figure: 1, waste liquid tank 2, electronic scale 3, ultrasonic wave densimeter 1, ultrasonic wave densimeter 25, magnetic drive pump 6, MEA pipeline 7, BDG pipeline 8, pure water pipeline 9, waste discharge pump 10, nitration mixture groove.
[detailed description of the invention]
The invention provides a kind of stripper and reclaim nitration mixture and measuring method, comprise the following steps:
1) receive stripping liquid for regenerating, only containing MEA and BDG two kinds of compositions in this stripping liquid for regenerating, use ultrasonic wave densimeter one to measure the concentration of MEA, because in stripper regenerative process, MEA is excluded, the concentration therefore recorded is on the low side compared with finished product stripper;
2) MEA composition is added, ultrasonic wave densimeter one is used to measure MEA concentration, if concentration is higher than 23.75%, then add BDG, if concentration is lower than 23.75%, then add MEA, re-use ultrasonic wave densimeter one and measure MEA concentration, repeat this step, until MEA concentration is 23.75%, wherein, the addition of MEA or BDG adopts electronic scale to measure;
3) add pure water, use ultrasonic wave densimeter two to measure pure water concentration, proportioning to pure water concentration is 20%, and namely the concentration of MEA, BDG, pure water is respectively MEA19%, BDG61%, pure water 20%, and get product stripper; After each constituent concentration of this finished product stripper is qualified, then the finished product stripper in nitration mixture groove is transferred in pan tank stand-by.
As shown in Figure 1, present invention also offers a kind of stripper and reclaim nitration mixture and measuring system, comprise electronic scale 2, ultrasonic wave densimeter 1, ultrasonic wave densimeter 24 and magnetic drive pump 5, electronic scale 2 is located on nitration mixture groove 10, the arrival end of nitration mixture groove 10 connects MEA pipeline 6 respectively, BDG pipeline 7, pure water pipeline 8, the port of export of nitration mixture groove 10 connects ultrasonic wave densimeter 1 by pipeline, ultrasonic wave densimeter 24, be connected in parallel between ultrasonic wave densimeter 1 and ultrasonic wave densimeter 24, ultrasonic wave densimeter 1, the other end of ultrasonic wave densimeter 24 connects magnetic drive pump 5 arrival end by pipeline.
Wherein, nitration mixture groove 10 bottom is provided with waste discharge mouth, and waste discharge mouth connects waste discharge pump 9 by pipeline, and the other end of waste discharge pump 9 connects waste liquid tank 9 by pipeline; Magnetic drive pump 5 tilting is installed, and the port of export of magnetic drive pump 5 connects waste discharge pump 9 by pipeline, and waste discharge pump 9 is arranged on the minimum point that stripper reclaims nitration mixture and measuring system; MEA pipeline 6, BDG pipeline 7, pure water pipeline 8 are all provided with electronic valve; The horizontal pipe that stripper reclaims nitration mixture and measuring system all adopts the gradient to install, and its gradient is 5:100.
Below in conjunction with specific embodiment, the present invention is made the following instructions:
Stripping liquid for regenerating is grouped into by three kinds of one-tenth, and its concentration is: MEA19%, BDG61%, pure water 20%.Be specially:
The first step, proportioning go out by MEA and BDG form in the middle of mixed liquor, in the middle mixed liquor of guarantee, the concentration of MEA is 19/ (19+61)=23.75%.Now, in mixed liquor, only have 2 kinds of compositions, No. 1, ultrasonic wave densimeter accurately measurement MEA concentration wherein can be used.
Second step, then in middle mixed liquor (MEA concentration is known), add pure water and obtain finished product stripper.Use No. 2, ultrasonic wave densimeter to measure the concentration of pure water, ensure pure water concentration 20%.
3rd step, through calculating, each component ratio of finished product stripper is: MEA19%, BDG61%, pure water 20%.
In the production process of nitration mixture, first, receive regenerated liquid, now only have regenerated liquid MEA, BDG two kinds of compositions, ultrasonic wave densimeter one can be used to measure the concentration of MEA, because MEA is excluded in regenerative process, therefore concentration is usually on the low side.Then, add MEA, mixed liquor in the middle of generating, after completing, MEA measured by use ultrasonic wave densimeter one, ensures that its concentration is 23.75%; If concentration is defective, higher, add BDG, on the low side, add MEA, re-use ultrasonic wave densimeter one after completing and measure MEA concentration; Repeat this step until MEA concentration is qualified; Because addition is controlled by electronic scale, usually once can be qualified.Finally, add pure water, after completing, use ultrasonic wave densimeter two is measured, and proportioning is to pure water concentration 20%, and like this, the concentration of MEA/BDG/ pure water is: MEA80%x23.75%=19%, BDG80%x (1-23.75%)=61%, pure water 20%.After each constituent concentration is qualified, finished product stripper in nitration mixture groove is transferred in pan tank.As defective, can calculate according to existing concentration the weight mixed calculation again again adding MEA/BDG/ pure water, also again can live again in waste discharge to waste liquid tank.
After finished product stripper transfers to pan tank, in nitration mixture groove and pipeline thereof, still residual a small amount of stripper, wherein containing pure water.If can not get rid of residual stripper completely, during next batch nitration mixture, receive regenerated liquid, when using ultrasonic wave densimeter one to measure concentration, pure water then can interfere with the concentration of MEA, causes concentration inaccurate.Therefore, must existing system be transformed, guarantee noresidue.
In the present invention, the air driven pump used in traditional structure is replaced by magnetic drive pump, forbids installing non-return valve after this magnetic drive pump, magnetic drive pump tilts to install, and ensures that entrance is in least significant end; And non-return valve in traditional air driven pump, must be had, after pump, ducted stripper cannot reflux, and cannot get rid of.Horizontal pipe in system is all made the gradient and is installed, and its gradient is 5:100, to guarantee that horizontal pipe leans on gravity reflux noresidue.The present invention installs waste discharge pump in the minimum point of system, can follow waste liquid in pipeline by emptying nitration mixture groove, the stripper being back to minimum point is all discharged to waste liquid tank.
The present invention, by the restriction of above-mentioned embodiment, change, the modification done, substitutes, combines, simplifies under other any does not deviate from Spirit Essence of the present invention and principle, all should be equivalent substitute mode, is included within protection scope of the present invention.
Claims (9)
1. stripper reclaims nitration mixture and a measuring method, it is characterized in that, comprises the following steps:
1) receive stripping liquid for regenerating, only containing MEA and BDG two kinds of compositions in this stripping liquid for regenerating, use ultrasonic wave densimeter one to measure the concentration of MEA, because in stripper regenerative process, MEA is excluded, the concentration therefore recorded is on the low side compared with finished product stripper;
2) add MEA composition, use ultrasonic wave densimeter one to measure MEA concentration, if concentration is higher than 23.75%, then add BDG, if concentration is lower than 23.75%, then add MEA, re-use ultrasonic wave densimeter one and measure MEA concentration, repeat this step, until MEA concentration is 23.75%;
3) add pure water, use ultrasonic wave densimeter two to measure pure water concentration, proportioning to pure water concentration is 20%, and namely the concentration of MEA, BDG, pure water is respectively MEA19%, BDG61%, pure water 20%, and get product stripper.
2. stripper as claimed in claim 1 reclaims nitration mixture and measuring method, it is characterized in that: step 2) in, the addition of MEA or BDG adopts electronic scale to measure.
3. stripper as claimed in claim 1 reclaims nitration mixture and measuring method, it is characterized in that: step 3) in, after each constituent concentration of finished product stripper is qualified, the finished product stripper in nitration mixture groove is transferred in pan tank stand-by.
4. a stripper reclaims nitration mixture and measuring system, it is characterized in that: comprise electronic scale (2), ultrasonic wave densimeter one (3), ultrasonic wave densimeter two (4) and magnetic drive pump (5), described electronic scale (2) is located on nitration mixture groove (10), the arrival end of described nitration mixture groove (10) connects MEA pipeline (6) respectively, BDG pipeline (7), pure water pipeline (8), the port of export of described nitration mixture groove (10) connects ultrasonic wave densimeter one (3) by pipeline, ultrasonic wave densimeter two (4), be connected in parallel between described ultrasonic wave densimeter one (3) and ultrasonic wave densimeter two (4), described ultrasonic wave densimeter one (3), the other end of ultrasonic wave densimeter two (4) connects magnetic drive pump (5) arrival end by pipeline.
5. stripper as claimed in claim 4 reclaims nitration mixture and measuring system, it is characterized in that: described nitration mixture groove (10) bottom is provided with waste discharge mouth, described waste discharge mouth connects waste discharge pump (9) by pipeline, and the other end of described waste discharge pump (9) connects waste liquid tank (9) by pipeline.
6. stripper as claimed in claim 5 reclaims nitration mixture and measuring system, it is characterized in that: described magnetic drive pump (5) tilting is installed, and the port of export of described magnetic drive pump (5) connects waste discharge pump (9) by pipeline.
7. the stripper as described in claim 5 or 6 reclaims nitration mixture and measuring system, it is characterized in that: (8) are all provided with electronic valve for described MEA pipeline (6), BDG pipeline (7), pure water pipeline.
8. stripper as claimed in claim 7 reclaims nitration mixture and measuring system, it is characterized in that: described waste discharge pump (9) is arranged on the minimum point that stripper reclaims nitration mixture and measuring system.
9. stripper as claimed in claim 8 reclaims nitration mixture and measuring system, it is characterized in that: the horizontal pipe that described stripper reclaims nitration mixture and measuring system all adopts the gradient to install, and its gradient is 5:100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891053.1A CN105536636A (en) | 2015-12-04 | 2015-12-04 | Stripping liquid mixed acid recovery and measurement method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891053.1A CN105536636A (en) | 2015-12-04 | 2015-12-04 | Stripping liquid mixed acid recovery and measurement method and system |
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| Publication Number | Publication Date |
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| CN105536636A true CN105536636A (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510891053.1A Pending CN105536636A (en) | 2015-12-04 | 2015-12-04 | Stripping liquid mixed acid recovery and measurement method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589632A (en) * | 2018-12-24 | 2019-04-09 | 上海盛剑环境***科技股份有限公司 | A kind of recovery method of stripper |
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| CN1373393A (en) * | 2001-02-06 | 2002-10-09 | 长濑产业株式会社 | Developing liquid mfg. device and method |
| JP2002324754A (en) * | 2001-02-06 | 2002-11-08 | Hirama Rika Kenkyusho:Kk | Refined developer solution preparing apparatus and method thereof |
| CN102658040A (en) * | 2012-04-25 | 2012-09-12 | 无锡新矿微控电子科技有限公司 | Digital emulsion proportioning device |
| CN103728847A (en) * | 2012-10-11 | 2014-04-16 | 松下电器产业株式会社 | Anti-corrosion agent stripping liquid mixing method and device |
| CN205182656U (en) * | 2015-12-04 | 2016-04-27 | 冠礼控制科技（上海）有限公司 | Nitration mixture and measurement system are retrieved to stripper |
-
2015
- 2015-12-04 CN CN201510891053.1A patent/CN105536636A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373393A (en) * | 2001-02-06 | 2002-10-09 | 长濑产业株式会社 | Developing liquid mfg. device and method |
| JP2002324754A (en) * | 2001-02-06 | 2002-11-08 | Hirama Rika Kenkyusho:Kk | Refined developer solution preparing apparatus and method thereof |
| CN102658040A (en) * | 2012-04-25 | 2012-09-12 | 无锡新矿微控电子科技有限公司 | Digital emulsion proportioning device |
| CN103728847A (en) * | 2012-10-11 | 2014-04-16 | 松下电器产业株式会社 | Anti-corrosion agent stripping liquid mixing method and device |
| CN205182656U (en) * | 2015-12-04 | 2016-04-27 | 冠礼控制科技（上海）有限公司 | Nitration mixture and measurement system are retrieved to stripper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589632A (en) * | 2018-12-24 | 2019-04-09 | 上海盛剑环境***科技股份有限公司 | A kind of recovery method of stripper |
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Application publication date: 20160504 |