CN112246796A - Method for cleaning glassware subjected to experiment of electrolytic extraction of inclusions - Google Patents
Method for cleaning glassware subjected to experiment of electrolytic extraction of inclusions Download PDFInfo
- Publication number
- CN112246796A CN112246796A CN202010870402.2A CN202010870402A CN112246796A CN 112246796 A CN112246796 A CN 112246796A CN 202010870402 A CN202010870402 A CN 202010870402A CN 112246796 A CN112246796 A CN 112246796A
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- Prior art keywords
- glassware
- washing
- water
- cleaning
- soaking
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
- B08B9/22—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by soaking alone
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/83—Mixtures of non-ionic with anionic compounds
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/044—Hydroxides or bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2006—Monohydric alcohols
- C11D3/201—Monohydric alcohols linear
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention relates to a method for cleaning glassware after an experiment of electrolytic extraction of inclusions, which comprises the following steps of (1) washing: repeatedly washing glassware with water for 2-3 times; (2) preparing a soaking reagent: preparing distilled water, adding analytically pure sodium hydroxide, fully dissolving, cooling the solution to room temperature, adding fatty alcohol-polyoxyethylene ether and sodium alkyl sulfonate, finally adding absolute ethyl alcohol, stirring and mixing uniformly to prepare an organic soaking agent which takes sodium hydroxide as a solute and contains a surfactant; (3) soaking: soaking the washed glassware in an organic soaking agent, completely soaking the glassware and brushing the inner wall of the glassware; (4) water cleaning: taking out the soaked glassware and washing the glassware with water; (5) washing glassware with phosphoric acid solution, and washing glassware with water; (6) and washing the cleaned glassware with deionized water for multiple times to remove ionic substances on the surface. The complete cleaning of the glassware for the extraction experiment is realized.
Description
Technical Field
The invention relates to the field of chemical experiment operation, in particular to a method for cleaning glassware containing organic grease in a moxa electrolysis laboratory.
Background
In the field of steelmaking, the purpose of an electrolytic inclusion extraction experiment is to extract micron-sized inclusions of a steel sample after the steel sample is dissolved, and the experiment has high requirements on the external environment of the experiment and the cleanliness of glassware used. The organic reagent used in the experimental process is attached to the inner wall of a glass ware (a beaker, a flask, a magnetic separation tube and the like) to form a layer of residue similar to grease, and the residue has complex components containing mixed inorganic matters and organic matters (ester substances mixed with inorganic ions) and is difficult to clean.
At present, the common methods for cleaning glassware in laboratories are as follows: (1) the washing is carried out by using detergents such as washing powder and detergent, and the method is suitable for washing most of glassware with inorganic reagents and has no effect on residual organic reagents; (2) the effect of pollution caused by mixed organic reagents is not obvious even if a single acid solution or alkali solution is used for soaking, such as a sulfuric acid soaking method diluted in a specific proportion disclosed in Chinese patent 'a laboratory glassware cleaning method' (publication No. CN 103357623A); (3) the special cleaning agent is prepared according to the characteristics of stains, for example, the special cleaning agent prepared from 8 organic reagents provided by Chinese patent 'Special cleaning agent for glassware' (publication No. CN 102559403A). The method disclosed in the patent is complex in preparation, toxic and easy to cause secondary pollution. Moreover, the cleaning agents can not achieve ideal effects on the cleaning of glassware related to the inclusion extraction experiment and can not be thoroughly cleaned.
Disclosure of Invention
The invention provides a cleaning method based on the requirements of an experiment for electrolytically extracting inclusions in steel samples (hereinafter, also referred to as an extraction experiment), which is developed for thoroughly cleaning glassware used in the extraction experiment and providing glassware with high cleanliness for the next experiment for electrolytically extracting inclusions. The cleaning method is simple to operate, time-saving, labor-saving and less in residue.
The specific technical scheme of the invention is as follows: a method for cleaning glassware after an experiment of electrolytic extraction of inclusions comprises the steps of,
(1) washing: repeatedly washing glassware with water for 2-3 times;
(2) preparing a soaking reagent: preparing distilled water, adding analytically pure sodium hydroxide, fully dissolving, cooling the solution to room temperature, adding analytically pure fatty alcohol-polyoxyethylene ether and analytically pure sodium alkylsulfonate, uniformly stirring the solution, finally adding absolute ethyl alcohol, uniformly stirring and mixing to prepare an organic soaking agent which takes sodium hydroxide as a solute and contains a surfactant;
(3) soaking: soaking the glassware washed in the step (1) in the organic soaking agent in the step (2) for more than 10min and brushing the inner wall of the glassware;
(4) water cleaning: taking out the soaked glassware and washing the glassware with water;
(5) cleaning with phosphoric acid solution: washing glassware with phosphoric acid solution, and washing glassware with water;
(6) washing with deionized water: and washing the cleaned glassware with deionized water for multiple times to remove ionic substances on the surface.
Taking 1000mL of organic soaking agent as an example, taking 100mL of distilled water, adding 100-120 g of analytically pure sodium hydroxide, fully dissolving, cooling the solution to room temperature, adding 1-1.5 mL of analytically pure fatty alcohol-polyoxyethylene ether and 1-1.5 g of analytically pure sodium alkylsulfate, uniformly stirring, finally adding 1000mL of absolute ethyl alcohol, uniformly stirring and mixing to obtain 1000mL of organic soaking agent containing sodium hydroxide as a solute and containing a surfactant.
Preferably, per 100mL of distilled water, 120g of sodium hydroxide, 1.5mL of analytically pure fatty alcohol-polyoxyethylene ether, and 1.5g of analytically pure sodium alkylsulfonate.
Preferably, the phosphoric acid aqueous solution of the step (5) is prepared in a ratio of 1: 1.
Preferably, the deionized water in the step (6) repeatedly washes the glass ware for 2-3 times.
The invention has the beneficial effects that:
1. the invention has the most beneficial effects of realizing the thorough cleaning of the glassware for the extraction experiment and effectively avoiding the interference to the judgment of the inclusion caused by the unclean vessel cleaning in the experiment of the electrolytic inclusion.
2. According to the principle that organic esters are decomposed into alcohol and organic carboxylate under the alkaline condition, an ethanol solution of sodium hydroxide with a certain concentration is prepared to be used as an organic soaking reagent, and a product obtained after the sodium hydroxide reacts with organic stains is dissolved in the ethanol solution in the soaking process.
3. The sodium alkyl sulfonate and the fatty alcohol-polyoxyethylene ether are used as the surfactants, so that the surface tension of the solution can be reduced, the permeability is high, the cleaning agent can permeate between the surface of the glassware and pollutants, the pollutants can be separated from the surface of the glassware, the removal of the pollutants is facilitated, a protective layer can be formed on the surface of the glassware, and the pollutants are prevented from being adhered to the inner wall of the glassware again.
4. Residual sodium hydroxide is removed by using a high-concentration phosphoric acid solution with the ratio of 1:1, so that the glassware is prevented from being corroded by the residual sodium hydroxide.
5. The invention also provides a preparation method of the solution taking inorganic reagent as solute and organic liquid as solvent, firstly dissolving the inorganic reagent with water, and then adding absolute ethyl alcohol.
6. The method has the advantages of convenient and effective solution preparation, convenient operation and simple method, and the reagents are common reagents, have no toxicity, are easy to obtain and prepare, and do not influence the health of operators.
7. Persons of ordinary skill in the art can quickly become familiar with the method and provide new experimental ideas for those engaged in the experiments of electrolytic inclusions.
Detailed Description
The present invention is described in further detail below with reference to examples, which are intended to be illustrative and not to be construed as limiting the invention.
Taking the conical flask used in the experiment for extracting the impurities as an example, the conical flask is subjected to the following cleaning process:
(1) washing: after the extraction experiment is finished, repeatedly washing the conical flask filled with the organic reagent for 2-3 times by using tap water, and washing off residual liquid, wherein a layer of oily stain can be seen to be attached to the inner wall and the outer wall of the conical flask;
(2) preparing a soaking reagent: putting 240g of analytically pure sodium hydroxide into a 2500mL beaker, adding 300mL of distilled water to fully dissolve, adding 3mL of analytically pure fatty alcohol-polyoxyethylene ether and 3g of analytically pure sodium alkylsulfonate, finally adding absolute ethyl alcohol to 2000mL, stirring for 2min, uniformly mixing, and standing;
(3) soaking: putting the washed conical flask into the 2500mL beaker containing the soaking reagent in the step (2), completely immersing the conical flask below the liquid level of the soaking reagent, and brushing the conical flask with a test tube brush after completely soaking for 10 min;
(4) washing with tap water: repeatedly washing the soaked conical flask with tap water to remove the soaking reagent;
(5) cleaning with phosphoric acid solution: preparing a phosphoric acid solution with a ratio of 1:1, washing the conical flask with the phosphoric acid solution for 2-3 times, and thoroughly washing the conical flask with tap water for 2-3 times;
(6) washing with deionized water: and repeatedly washing the cleaned conical flask with deionized water for 2-3 times to remove ionic substances on the surface.
The above method is also applicable to the washing of beakers, test tubes, and the like used in the electrolytic test process.
Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A method for cleaning glassware after an experiment of electrolytic extraction of inclusions is characterized by comprising the following steps: the method comprises the following steps of,
(1) washing: repeatedly washing glassware with water for 2-3 times;
(2) preparing a soaking reagent: preparing distilled water, adding analytically pure sodium hydroxide, fully dissolving, cooling the solution to room temperature, adding analytically pure fatty alcohol-polyoxyethylene ether and analytically pure sodium alkylsulfonate, uniformly stirring the solution, finally adding absolute ethyl alcohol, uniformly stirring and mixing to prepare an organic soaking agent which takes sodium hydroxide as a solute and contains a surfactant;
(3) soaking: soaking the glassware washed in the step (1) in the organic soaking agent in the step (2) for more than 10min and brushing the inner wall of the glassware;
(4) water cleaning: taking out the soaked glassware and washing the glassware with water;
(5) cleaning with phosphoric acid solution: washing glassware with phosphoric acid solution, and washing glassware with water;
(6) washing with deionized water: and washing the cleaned glassware with deionized water for multiple times to remove ionic substances on the surface.
2. The method of claim 1 for cleaning glassware subjected to an electrowinning inclusion test, wherein the method comprises the steps of: taking 150mL of distilled water, adding 100-120 g of analytically pure sodium hydroxide, fully dissolving, after the solution is cooled to room temperature, adding 1-1.5 mL of analytically pure fatty alcohol-polyoxyethylene ether and 1-1.5 g of analytically pure sodium alkylsulfonate, uniformly stirring, finally adding absolute ethyl alcohol to 1000mL, uniformly stirring and mixing to prepare 1000mL of the organic soaking agent which takes sodium hydroxide as a solute and contains a surfactant.
3. The method of claim 2 for cleaning glassware subjected to an electrowinning inclusion test, wherein the method comprises the steps of: each 100mL of distilled water contains 120g of sodium hydroxide, 1.5mL of analytically pure fatty alcohol-polyoxyethylene ether and 1.5g of analytically pure sodium alkylsulfonate.
4. The method of claim 2 for cleaning glassware subjected to an electrowinning inclusion test, wherein the method comprises the steps of: the preparation concentration of the phosphoric acid solution in the step (5) is 1: 1.
5. The method of claim 2 for cleaning glassware subjected to an electrowinning inclusion test, wherein the method comprises the steps of: and (6) repeatedly washing the glassware with deionized water for 2-3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870402.2A CN112246796A (en) | 2020-08-26 | 2020-08-26 | Method for cleaning glassware subjected to experiment of electrolytic extraction of inclusions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870402.2A CN112246796A (en) | 2020-08-26 | 2020-08-26 | Method for cleaning glassware subjected to experiment of electrolytic extraction of inclusions |
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| Publication Number | Publication Date |
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| CN112246796A true CN112246796A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010870402.2A Pending CN112246796A (en) | 2020-08-26 | 2020-08-26 | Method for cleaning glassware subjected to experiment of electrolytic extraction of inclusions |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368139A (en) * | 2007-08-15 | 2009-02-18 | 江苏海迅实业集团股份有限公司 | Laboratory glassware detergent |
| CN103357623A (en) * | 2013-07-31 | 2013-10-23 | 徐州联益生物科技开发有限公司 | Laboratory glassware cleaning method |
| CN104194953A (en) * | 2014-08-18 | 2014-12-10 | 北京三药科技开发公司 | Detergent for cleaning laboratory glassware |
| CN105802744A (en) * | 2016-04-18 | 2016-07-27 | 江南大学 | Washing liquid for washing glass vessels |
| CN106047515A (en) * | 2016-05-25 | 2016-10-26 | 天津市环境保护科学研究院 | Detergent and use method |
| CN109500015A (en) * | 2018-11-02 | 2019-03-22 | 云南省粮油科学研究院（云南省粮油产品质量监督检验测试中心） | A kind of cleaning method not measuring small-bore glassware internal grease |
-
2020
- 2020-08-26 CN CN202010870402.2A patent/CN112246796A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368139A (en) * | 2007-08-15 | 2009-02-18 | 江苏海迅实业集团股份有限公司 | Laboratory glassware detergent |
| CN103357623A (en) * | 2013-07-31 | 2013-10-23 | 徐州联益生物科技开发有限公司 | Laboratory glassware cleaning method |
| CN104194953A (en) * | 2014-08-18 | 2014-12-10 | 北京三药科技开发公司 | Detergent for cleaning laboratory glassware |
| CN105802744A (en) * | 2016-04-18 | 2016-07-27 | 江南大学 | Washing liquid for washing glass vessels |
| CN106047515A (en) * | 2016-05-25 | 2016-10-26 | 天津市环境保护科学研究院 | Detergent and use method |
| CN109500015A (en) * | 2018-11-02 | 2019-03-22 | 云南省粮油科学研究院（云南省粮油产品质量监督检验测试中心） | A kind of cleaning method not measuring small-bore glassware internal grease |
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Application publication date: 20210122 |