CN112945794B - Used for detecting SO of activated carbon fiber pair 2 Method for measuring adsorption amount - Google Patents
Used for detecting SO of activated carbon fiber pair 2 Method for measuring adsorption amount Download PDFInfo
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- CN112945794B CN112945794B CN202110141697.4A CN202110141697A CN112945794B CN 112945794 B CN112945794 B CN 112945794B CN 202110141697 A CN202110141697 A CN 202110141697A CN 112945794 B CN112945794 B CN 112945794B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/04—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to the technical field of activated carbon, in particular to a method for detecting SO pairs of activated carbon fibers 2 A novel method for adsorbing amount. The method comprises placing a sample to be measured in a sealed gas washing bottle after the sample to be measured has constant weight, and measuring the sample SO 2 After the adsorption is saturated, the residual SO in the bottle 2 Blowing out gas, absorbing with absorption liquid from the gas washing bottle of the sand core, measuring with iodometry, and calculating to obtain SO 2 The amount of adsorption of (3). The method is safer, has low cost, good repeatability and high accuracy, and is suitable for quantitatively measuring SO in samples in small laboratories 2 The amount of adsorption of (3).
Description
Technical Field
The invention relates to the technical field of activated carbon, in particular to a method for detecting SO (SO) pair of activated carbon fibers 2 A novel method for adsorbing amount.
Background
The current problem of environmental pollution has more serious influence on economic and social development, and China still uses coal as a main fuel to carry out thermal power generation at present. With the rapid development of the current national economy, the energy consumption of resident electricity consumption and enterprises and heavy industries is continuously improved, SO that the SO of the power plant is increased 2 The discharge capacity is also rising continuously. Meanwhile, the automobile inventory in China is high year by year, and further SO (sulfur oxide) is caused 2 The amount of discharge of (c) increases. SO (SO) 2 Can damage respiratory system, impair brain memory function, and SO 2 Can be converted into acid rain under certain conditions, which causes the conditions of building corrosion, plant death and the like. SO of China 2 The discharge amount is about 2000 million tons throughout the year, and the life quality of people is seriously harmed, SO that SO is reduced 2 Or by being able to absorb SO efficiently 2 The purifier absorbs SO 2 It becomes very important.
With the continuous improvement of the living standard and the modernization of the living style, people pay more attention to the indoor air quality, and particularly residents living near power plants and factories are still difficult to isolate SO by closing the door and closing the window 2 And (3) harmful gases. As a novel functional adsorption material, the activated carbon fiber has the characteristics of large specific surface area, large adsorption capacity, high adsorption and desorption speed, easy regeneration and the like, and is widely researched to be used as novel SO 2 Adsorbing material for making air conditioner filter screen and airA great deal of experiments are available for detecting SO of different modified activated carbon fibers in filter elements, masks and the like of purifiers 2 The adsorption capacity of (2). However, laboratory tests are currently used to detect SO in a material 2 Adsorption experiments require large SO 2 Detection equipment, large volume, and high purity SO 2 The steel cylinder is also comparatively complicated to operate, potential safety hazard appears easily, and the requirement to experiment operating personnel's quality level is higher. Therefore, a set of SO-activated carbon fiber pairs which can be operated simply, safely and accurately is designed 2 The adsorption amount detection device has important significance.
Disclosure of Invention
The invention aims to provide a method for detecting SO by activated carbon fiber 2 A novel method for adsorption capacity, and aims to design a set of SO-pair activated carbon fiber which can be simply operated, is safe and has accurate data 2 An adsorption amount detecting device. The device can effectively measure the SO of the activated carbon fiber material by referring to and improving the national environmental protection Bureau Standard HJ/T56-2000 iodine measurement method for measuring the sulfur dioxide in the exhaust gas of the solid pollution source 2 The adsorption capacity of (2). The improved device has low requirement on a laboratory and does not need to be provided with a large SO 2 Detection equipment, and no need of high-purity SO 2 The steel cylinder has simple and convenient operation and safe experimental operation. A set of SO-activated carbon fiber pairs which can be operated simply, safely and accurately is designed 2 SO of adsorption quantity detection device for small laboratory 2 Adsorption studies are of great significance.
To achieve the above object, the present invention provides a method for detecting SO in activated carbon fiber 2 A novel method of adsorbing an amount, the method comprising the steps of:
(1) Preparation of high-concentration SO 2
30g of Na was placed in a 250mL round-bottomed flask 2 SO 3 The upper end of the long-neck funnel is plugged with a 2-hole rubber plug and is inserted into a 100mL long-neck funnel and a right-angle conduit, one end of the conduit is connected into a water tank to collect tail gas, all the ports are sealed by vacuum grease, 20mL concentrated sulfuric acid is filled into the long-neck funnel, the piston of the long-neck funnel is opened, and gas is treatedAfter 10min, connecting the conduit with a gas collecting bag, and collecting high concentration SO 2 ；
(2) Adsorption of SO 2
Drying the detection material at 80 ℃ for 4h, taking out the detection material after constant weight, weighing, and recording m ACF Then placing the sample to be tested in a 250mL gas washing bottle coated with vacuum grease, coating vacuum grease on two ends of the gas washing bottle, clamping the gas washing bottle by using a water stop clamp to manufacture a sealing effect, and then sucking 5mL of high-concentration SO from the gas collection bag by using a sample injector 2 Injecting into a gas washing bottle and standing for 48 hours;
(3)SO 2 determination of the content
Connecting the air inlet of a gas washing bottle with an air pump provided with a one-way valve, connecting the other end of the gas washing bottle with a sand core absorption bottle provided with 50mL of absorption liquid, then opening a water stop clamp and the air pump to blow air, controlling the air flow speed at about 0.5L/min, blowing for 1h, and connecting the tail gas of the sand core absorption bottle with an aqueous solution containing methyl orange to judge whether SO exists or not 2 Transferring the absorption solution into an iodometry bottle, washing the absorption bottle with a small amount of absorption solution twice, transferring into the iodometry bottle, shaking, adding 50mL of 2g/L starch solution, titrating to blue with 0.010mol/L iodine standard solution, and recording consumption V 1 (mL), an empty bottle not containing activated carbon fiber is injected with 5mL of high-concentration SO 2 Performing air blowing absorption, and recording the final consumption V of the iodine standard solution 0 (mL), another blank absorption solution of the same volume was taken and blank titration was performed in the same manner, and the consumption V was recorded 2 (mL)；
(4) SO absorption by activated carbon fibers 2 And (3) calculating the content:
in the formula:
k: adsorption of SO by activated carbon fiber 2 Content (mg/g);
V 0 :5ml of high-concentration SO 2 Volume of iodine standard solution consumed (mL);
V 1 : residual SO after adsorption of activated carbon fiber 2 Volume of iodine standard solution consumed (mL);
C(1/2I 2 ): iodine standard solution concentration (mol/L);
32.0: mass of sulfur dioxide (mg) equivalent to 1ml of 1mol/L iodine standard solution;
m ACF : mass (g) of activated carbon fiber.
Preferably, the detection material in step (2) is one or more of activated carbon fibers.
Compared with the prior art, the invention has the beneficial effects that:
1. the method does not need large SO 2 The detection device is suitable for detecting SO by using small laboratory detection materials 2 The adsorption measurement is carried out, and the technical level requirement on experimenters is not high;
2. the method does not need to prepare SO 2 The steel cylinder improves the safety of experimental operation;
3. the method is an improvement based on the reference of national institute of environmental protection Standard HJ/T56-2000 iodine method for measuring Sulfur dioxide in solid pollution Source exhaust, has effective data, and can quickly measure the SO of the activated carbon fiber 2 The amount of adsorption of (3).
Drawings
FIG. 1 shows the generation and collection of SO according to the present invention 2 A schematic view of the apparatus;
FIG. 2 shows the generation and collection of SO according to the present invention 2 A device diagram;
FIG. 3 shows activated carbon fiber to SO 2 A schematic view of the assay device;
FIG. 4 shows SO of activated carbon fibers 2 Adsorption amount-time change chart.
Detailed Description
The present invention will be further described with reference to examples.
Example 1
Preparation of high-concentration SO 2
30gNa was placed in a 250mL round bottom flask 2 SO 3 The upper end was plugged with a 2-hole rubber stopper and inserted into a 100mL long-necked funnel and a right-angle catheter. One end of the conduit is connected with a water tank to collect tail gas. After all the joints are sealed with vacuum grease, the sealing method isThe long-neck funnel was charged with 20mL of concentrated sulfuric acid. Opening the piston of the long-neck funnel, connecting the guide pipe with the air collecting bag after gas generation for 10min, and collecting high-concentration SO 2 。
Example 2
Adsorption of SO 2
Drying the activated carbon fiber at 80 ℃ for 4h, taking out the activated carbon fiber after constant weight, weighing, and recording m ACF . And then placing the sample to be detected in a 250mL gas washing bottle coated with vacuum grease, coating vacuum grease on two ends of the gas washing bottle, and clamping by using a water stop clamp to manufacture a sealing effect. Then 5mL of high-concentration SO is absorbed from the gas collection bag by a sample injector 2 Injecting into a gas washing bottle and standing for 48h.
Example 3
SO 2 Determination of the content
SO 2 The content determination mainly refers to the iodine content determination method for sulfur dioxide in solid pollution source exhaust of national environmental protection agency standard HJ/T56-2000, the air inlet of a gas washing bottle is connected to an air pump with a one-way valve, the other end of the gas washing bottle is connected to a sand core absorption bottle with 50mL of absorption liquid, then a water stop clamp and the air pump are opened to blow air, the air flow speed is controlled to be about 0.5L/min, and the air is blown for 1h. The tail gas of the sand core absorption bottle is introduced into the aqueous solution containing methyl orange to judge whether SO exists or not 2 Escape occurs.
Then transferring the absorption liquid into an iodine measuring flask, washing the absorption flask with a small amount of absorption liquid twice, transferring into the iodine measuring flask, shaking, adding 50mL of 2g/L starch solution, titrating to blue with 0.010mol/L iodine standard solution, and recording consumption V 1 (mL)。
Injecting 5ml of high-concentration SO2 into an empty bottle without activated carbon fiber for air blowing absorption, and recording the final consumption V of the iodine standard solution 0 (mL)。
Taking another blank absorption liquid with the same volume, carrying out blank titration by the same method, and recording consumption V 2 (mL)。
Example 4
SO absorption by activated carbon fiber 2 And (3) calculating the content:
in the formula:
k: adsorbing SO2 content (mg/g) by using activated carbon fibers;
V 0 : volume (mL) of 5mL of high concentration SO2 depleted iodine standard solution;
V 1 : the volume (mL) of iodine standard solution consumed by residual SO2 after adsorption of activated carbon fiber;
C(1/2I 2 ): iodine standard solution concentration (mol/L);
32.0: mass (mg) of sulfur dioxide equivalent to 1mL of 1mol/L iodine standard solution;
m ACF : mass (g) of activated carbon fiber.
FIGS. 1 and 2 illustrate SO generation and collection 2 The device has simple operation and collected SO 2 The determination shows that the purity is as high as 98.53 percent, which indicates that the device can well prepare high-purity SO 2 For detection.
FIG. 3 shows activated carbon fiber pair SO 2 Schematic of the apparatus for the assay, the entire apparatus being closed and SO being used 2 The detector detects that no air leakage phenomenon exists in the whole process, the tail gas absorption device is methyl orange solution, and no color change reaction occurs, which indicates that SO which is not absorbed by the activated carbon fiber 2 All the SO is absorbed by the absorption liquid, and the SO of the activated carbon fiber pair can be accurately calculated after the absorption liquid is measured by the iodine standard solution 2 The amount of adsorption of (3).
FIG. 4 shows SO of activated carbon fibers 2 The adsorption capacity-time change chart shows that the activated carbon fiber pair SO changes along with the time 2 Gradually increases and reaches saturation.
Claims (1)
1. Used for detecting SO of activated carbon fiber pair 2 A method for adsorption amount characterized by: the method comprises the following steps:
(1) Preparation of high-concentration SO 2
30g of Na was placed in a 250mL round-bottomed flask 2 SO 3 2-hole rubber for upper endPlugging the plug, inserting a 100mL long-neck funnel and a right-angle guide pipe, connecting one end of the guide pipe into a water tank to collect tail gas, sealing all interfaces with vacuum grease, filling 20mL concentrated sulfuric acid into the long-neck funnel, opening the piston of the long-neck funnel, connecting the guide pipe with a gas collecting bag after gas generation for 10min, and collecting high-concentration SO 2 ；
(2) Adsorption of SO 2
Drying the detection material at 80 ℃ for 4h, taking out and weighing after constant weight, and recording m ACF Then placing the sample to be tested in a 250mL gas washing bottle coated with vacuum grease, coating vacuum grease on two ends of the gas washing bottle, clamping the gas washing bottle by using a water stop clamp to manufacture a sealing effect, and then sucking 5mL of high-concentration SO from the gas collection bag by using a sample injector 2 Injecting into a gas washing bottle and standing for 48 hours; the detection material in the step (2) is one or more of activated carbon fibers;
(3)SO 2 determination of the content
Connecting the air inlet of a gas washing bottle with an air pump provided with a one-way valve, connecting the other end of the gas washing bottle with a sand core absorption bottle provided with 50mL of absorption liquid, then opening a water stop clamp and the air pump to blow air, controlling the air flow speed at about 0.5L/min, blowing for 1h, and connecting the tail gas of the sand core absorption bottle with an aqueous solution containing methyl orange to judge whether SO exists or not 2 Transferring the absorption solution into an iodine measuring flask, washing the absorption flask with a small amount of absorption solution, transferring into the iodine measuring flask twice, shaking, adding 50mL of 2g/L starch solution, titrating with 0.010mol/L iodine standard solution to blue, and recording consumption V 1 (mL), an empty bottle not containing activated carbon fiber is injected with 5mL of high-concentration SO 2 Performing air blowing absorption, and recording the final consumption V of the iodine standard solution 0 (mL), another blank absorption solution of the same volume is taken and blank titration is carried out by the same method, and the consumption V is recorded 2 (mL)；
(4) SO absorption by activated carbon fibers 2 And (3) calculating the content:
in the formula:
k: activity deviceAdsorption of SO by carbon fiber 2 Content (mg/g);
V 0 :5ml of high-concentration SO 2 Volume of iodine standard solution consumed (mL);
V 1 : residual SO after adsorption of activated carbon fiber 2 Volume of iodine standard solution consumed (mL);
C(1/2I 2 ): iodine standard solution concentration (mol/L);
32.0: mass (mg) of sulfur dioxide equivalent to 1mL of 1mol/L iodine standard solution;
m ACF : mass (g) of activated carbon fiber.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408647A1 (en) * | 1993-03-19 | 1994-09-22 | Volkswagen Ag | Method and device for determining the working capacity of an adsorber arrangement |
| JPH11347353A (en) * | 1998-06-09 | 1999-12-21 | Mitsubishi Heavy Ind Ltd | Exhaust gas cleaning method |
| CN104155293A (en) * | 2014-08-15 | 2014-11-19 | 广州衡创测试技术服务有限公司 | Improved detection method for sulfur dioxide |
| CN209764642U (en) * | 2019-01-17 | 2019-12-10 | 江苏奥利思特环保科技有限公司 | Desulfurization catalyst evaluation device |
| CN113083261A (en) * | 2021-05-24 | 2021-07-09 | 南昌师范学院 | Modification method of activated carbon fiber material |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1256919B (en) * | 1961-02-22 | 1967-12-21 | Voith Gmbh J M | Method and device for determining the oxygen consumption during oxidation processes, in particular for determining the biological oxygen demand |
| SE452510B (en) * | 1983-07-14 | 1987-11-30 | Knut Irgum | SET TO MEASURE A CONTENT OF A SUBSTANCE, EXCEPT A GAS, IN AIR, SOLID ADSORBENT FOR EXTENDING THE SET AND USING THE ADSORBENT |
| JP3703209B2 (en) * | 1996-04-23 | 2005-10-05 | 日本ベル株式会社 | Method for measuring the amount of adsorption of each component gas in a binary gas mixture |
| JP2001013048A (en) * | 1999-07-02 | 2001-01-19 | Shimadzu Corp | Gas concentration measuring apparatus |
| JP2012211024A (en) * | 2011-03-24 | 2012-11-01 | Sumitomo Metal Mining Co Ltd | Apparatus and method for evaluating active carbon performance |
| JP6478653B2 (en) * | 2015-01-20 | 2019-03-06 | 国立大学法人信州大学 | Adsorption rate measurement method |
| KR101739477B1 (en) * | 2016-03-15 | 2017-05-24 | 박영웅 | Performance Test Methods of Adsorbent for Indoor Air Radon Mitigation |
| CN107367440B (en) * | 2017-06-19 | 2023-08-01 | 金华职业技术学院 | Method for acetylene adsorption measurement |
| CN110132782A (en) * | 2019-06-18 | 2019-08-16 | 南通市纤维检验所 | A kind of activated carbon fibre Low Concentration of Benzene Dynamic Adsorption value detection method |
-
2021
- 2021-02-02 CN CN202110141697.4A patent/CN112945794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408647A1 (en) * | 1993-03-19 | 1994-09-22 | Volkswagen Ag | Method and device for determining the working capacity of an adsorber arrangement |
| JPH11347353A (en) * | 1998-06-09 | 1999-12-21 | Mitsubishi Heavy Ind Ltd | Exhaust gas cleaning method |
| CN104155293A (en) * | 2014-08-15 | 2014-11-19 | 广州衡创测试技术服务有限公司 | Improved detection method for sulfur dioxide |
| CN209764642U (en) * | 2019-01-17 | 2019-12-10 | 江苏奥利思特环保科技有限公司 | Desulfurization catalyst evaluation device |
| CN113083261A (en) * | 2021-05-24 | 2021-07-09 | 南昌师范学院 | Modification method of activated carbon fiber material |
Non-Patent Citations (1)
| Title |
|---|
| 改性活性炭吸附烟气中二氧化硫气体实验研究;苏青青 等;《安全与环境工程》;20080615;第15卷(第2期);第95-98页 * |
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