CN201852825U - High-concentration alkaline liquid detecting device - Google Patents
High-concentration alkaline liquid detecting device Download PDFInfo
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- CN201852825U CN201852825U CN201020255061XU CN201020255061U CN201852825U CN 201852825 U CN201852825 U CN 201852825U CN 201020255061X U CN201020255061X U CN 201020255061XU CN 201020255061 U CN201020255061 U CN 201020255061U CN 201852825 U CN201852825 U CN 201852825U
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- pipe
- static mixer
- concentration
- test sample
- meter
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Abstract
The utility model provides a high-concentration alkaline liquid detecting device which comprises a static mixer, a sample detecting pipe and a pH meter, wherein an inlet of the static mixer is connected with two input pipes, each input pipe is provided with a metering pump, a liquid discharging opening of the static mixer is connected with an input opening at the lower part of the sample detecting pipe by a transfusion pipe, a probe of the pH meter is inserted from the top of the sample detecting pipe, and a liquid discharging opening at the upper part of the sample detecting pipe is connected with a discharge pipe. The high-concentration alkaline liquid detecting device is formed by simple connection of a plurality of parts by a bypass of an alkaline liquid circulation loop of a system, so that the aim for detecting the industrial high-concentration alkaline liquid is achieved.
Description
Technical field
The utility model relates to the high-concentration alkali liquor pick-up unit.
Background technology
The industrial gaseous waste that contains chlorine and hydrogen chloride gas that produces in the commercial production need be through handling, and could discharge after up to standard.China Patent No. is that 200720005231.7 utility model patent instructions discloses a kind of emission-control equipment, need use the alkali lye of high concentration as absorbing agent for this class emission-control equipment, absorb chlorine and hydrogen chloride gas in the waste gas, therefore for real-time control, detection concentration of lye, it is most important to grasp alkali lye pH value, but, there is not effective method so far at present for the aqueous slkali real-time concentration of high concentration and the detection of corresponding pH value.Mainly be because in general water solution system, C
H+And C
OH-The ion concentration product is 10
14, the corresponding pH=14-lgC of alkali lye
Oh-, corresponding pH value effective range is between 0-14, and the highly corrosive of alkali lye itself proposed higher requirement to the material of detecting instrument, so also just do not have instrument can directly detect demonstration above effective range.
Summary of the invention
The purpose of this utility model is to propose a kind ofly can carry out that the pH value detects and high-concentration alkali liquor pick-up unit simple in structure to high-concentration alkali liquor.
For achieving the above object, the utility model is taked following technical scheme: the high-concentration alkali liquor pick-up unit that the utility model proposes has static mixer, test sample pipe and pH meter, the import of static mixer is connected with two input pipes, every input pipe is provided with volume pump, be connected by woven hose between the input port, bottom of the leakage fluid dram of static mixer and test sample pipe, the probe of pH meter inserts from test sample pipe top, and the top leakage fluid dram of test sample pipe is connected with delivery pipe.
On two input pipes and all be in the volume pump water inlet end and be provided with valve.
Described static mixer is a simple helix type static mixer.
Described volume pump is the valveless volume pump.
Calculate the principle ionic product as can be known by the pH value, at a certain temperature, [H in the water solution system
+] and [OH
-] product of concentration is a constant, this constant is called the ionic product of solution.The pH value of solution value is the negative logarithm of pH, and its mathematical notation formula is: pH=-lg[H
+].The concentration of solution is with acid, basicity becomes corresponding relation, and pH meter detects is that pH in the solution also is an acidity, and hydrogen ion and the hydroxide ion ion concentration in solution is long-pending to be constant, and the pH value of solution is the negative logarithm of pH.Therefore, the pH value differs 1, and the concentration corresponding relation just differs 10
1Doubly.In 4% concentration NaOH solution system, OH
-Volumetric molar concentration is 1mol/l, H
+Concentration then is 10
-14Mol/l, ionic product pH meter calculation value is 14; In the 40% concentration NaOH solution system, OH
-Volumetric molar concentration is 10mol/l, then H
+Concentration then is 10
-15Mol/l, theoretical ionic product calculated value is 10
-14Mol/l, theoretical pH meter calculation value is 15.So industrial use surpasses the alkali lye of 4% concentration, general pH instrument is accurately to detect.This device is got quantitative alkali lye, replenishes the service water dilution alkali lye of fixed proportion, shows the pH value after being diluted to the scope that the pH detecting instrument can detect.The pH numerical value that dilution is reduced is added on the value of pH detecting instrument detection demonstration, by calculating the pH value and the concentration that can obtain alkali lye.The utility model simply is formed by connecting with several parts as the bypass of the alkali lye circulation line of system, reaches the purpose that detects high alkali liquid.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail below, wherein Fig. 1 is the utility model diagrammatic sketch.
Embodiment
Embodiment 1 sees Fig. 1, present embodiment has simple helix type (PK type) static mixer 1, test sample pipe 2 and pH meter 3, the import of static mixer 1 is connected with two input pipes 4, every input pipe 4 is provided with valveless volume pump 5, be connected by woven hose 6 between the input port, bottom of the leakage fluid dram of static mixer 1 and test sample pipe 2, the probe 3-1 of pH meter 3 inserts from test sample pipe 2 tops, and the top leakage fluid dram of test sample pipe 2 is connected with delivery pipe 7.On two input pipes 4 and respectively be in valveless volume pump 5 water inlet ends and be provided with valve 8.
This device passes through a volume pump 5 is drawn regime flow on the alkali lye circulation line of system alkali lye, and flow is a preset value in controlled range.And simultaneously by another volume pump, certain multiplying power n flow according to the alkali lye preset value is drawn service water, note, but the pH value of diluted alkali lye should be in conventional pH meter sensing range, service water and alkali lye fully mix by static mixing gas, and dilution back concentration of lye is 1/ (n+1), and the pH value of this moment is B, add the pH decline numerical value lg (n+1) that the fixed dilution ratio is reduced, the true pH value=B+lg of alkali lye (n+1) in the final system.
Application examples: from the alkali lye of major cycle pipe and service water flow proportional according to 1: 9, behind the abundant mixing of static mixer, enter the test sample pipe, by detecting, the pH meter displayed value is 13.631, and then the long-pending calculated value of getting behind the negative logarithm of the industrial soda ion concentration in the major cycle pipe is 13.631+1=14.631.
Above-mentioned calculating can manually be finished, and generally can calculate by the programming controller of system, directly the true pH value of alkali lye in the display system.
Claims (4)
1. high-concentration alkali liquor pick-up unit, it is characterized in that: have static mixer (1), test sample pipe (2) and pH meter (3), the import of static mixer (1) is connected with two input pipes (4), every input pipe is provided with volume pump (5), be connected by woven hose (6) between the input port, bottom of the leakage fluid dram of static mixer (1) and test sample pipe (2), the probe (3-1) of pH meter (3) inserts from test sample pipe (2) top, and the top leakage fluid dram of test sample pipe (2) is connected with delivery pipe (7).
2. high-concentration alkali liquor pick-up unit according to claim 1 is characterized in that: two input pipes (4) are gone up and all are in volume pump (5) water inlet end and are provided with valve (8).
3. high-concentration alkali liquor pick-up unit according to claim 1 is characterized in that: described static mixer (1) is a simple helix type static mixer.
4. high-concentration alkali liquor pick-up unit according to claim 1 is characterized in that: described volume pump (5) is the valveless volume pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020255061XU CN201852825U (en) | 2010-07-12 | 2010-07-12 | High-concentration alkaline liquid detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020255061XU CN201852825U (en) | 2010-07-12 | 2010-07-12 | High-concentration alkaline liquid detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201852825U true CN201852825U (en) | 2011-06-01 |
Family
ID=44095213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020255061XU Expired - Fee Related CN201852825U (en) | 2010-07-12 | 2010-07-12 | High-concentration alkaline liquid detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201852825U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830095A (en) * | 2020-06-24 | 2020-10-27 | 宁波大地化工环保有限公司 | Method and device for testing pH of high-temperature high-salinity liquid |
| CN115253948A (en) * | 2022-07-27 | 2022-11-01 | 赞宇科技集团股份有限公司 | Continuous production device and process for cocoamidopropyl dimethyl betaine |
-
2010
- 2010-07-12 CN CN201020255061XU patent/CN201852825U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830095A (en) * | 2020-06-24 | 2020-10-27 | 宁波大地化工环保有限公司 | Method and device for testing pH of high-temperature high-salinity liquid |
| CN115253948A (en) * | 2022-07-27 | 2022-11-01 | 赞宇科技集团股份有限公司 | Continuous production device and process for cocoamidopropyl dimethyl betaine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20140712 |
|
| EXPY | Termination of patent right or utility model |