KR-20260065368-A - AUTOMATED GLASSWARE CLEANING DEVICE USING STRONG ACIDE AND GLASSWARE CLEANING METHOD USING STRONG ACID

KR20260065368AKR 20260065368 AKR20260065368 AKR 20260065368AKR-20260065368-A

Abstract

The disclosed automatic glass cleaning device using a strong acid comprises: a mesh container that accommodates a glass container and allows external fluid to flow; a strong acid container that accommodates a strong acid, is equipped with a heating means, and is equipped with a strong acid discharge port; a first pump that supplies the strong acid into the strong acid container; a distilled water container that accommodates distilled water and is equipped with a distilled water discharge port; a second pump that supplies distilled water into the distilled water container; a transfer device that moves the mesh container into or out of either the strong acid container or the distilled water container; and a control unit that controls the operation of the heating means of the strong acid container, the first pump, the second pump, and the transfer device.

Inventors

송영철
김동희
노예철
김정택
김명주
김성민
김기현
최지원
박지원

Assignees

한국화학연구원

Dates

Publication Date: 20260508
Application Date: 20241101

Claims (12)

A mesh container that accommodates a glass container and allows external fluid to flow; A strong acid container that accommodates a strong acid, is equipped with a heating means, and is equipped with a strong acid discharge port; A first pump that supplies strong acid into the above-mentioned strong acid container; A distilled water container that holds distilled water and is equipped with a distilled water outlet; A second pump that supplies distilled water into the above distilled water container; A transfer device for moving the above mesh container into or out of either the strong acid container or the distilled water container; and A control unit that controls the operation of the heating means of the above-mentioned strong acid container, the first pump, the second pump, and the transfer device; Automatic glass cleaning device using strong acid, including
In paragraph 1, The above control unit is, After driving the second pump to fill the distilled water container with distilled water, the mesh container is immersed in the distilled water container for a first wash, and The first pump is driven to fill the strong acid container with strong acid, and the heating means is controlled to heat and maintain the strong acid at a temperature below its boiling point, and the mesh container is immersed in the strong acid container for secondary washing. An automatic glass cleaning device using strong acid, which controls the operation of the heating means, first pump, second pump, and transfer device of the strong acid container so that the mesh container is immersed again in the distilled water container for a third cleaning.
In paragraph 2, The above control unit is, Prior to the above third wash, An automatic glass cleaning device using strong acid, which controls the process to open the distilled water outlet to empty the distilled water container and drive the second pump to refill the distilled water container with distilled water.
In paragraph 2, A filter device is installed on the circulation pipe connecting the above strong acid discharge port and the above first pump, and The above control unit is an automatic glass cleaning device using strong acid, which filters the strong acid used a predetermined number of times through the filter device and then supplies it into the strong acid container.
In paragraph 2, The above-mentioned strong acid container is equipped with a temperature sensor for measuring the temperature of the strong acid contained therein, and The above control unit maintains the heating temperature of the strong acid at a constant level based on the measurement value of the temperature sensor, an automatic glass cleaning device using strong acid.
In paragraph 2, The above first wash and/or third wash are, An automatic glass cleaning device using strong acid, which is performed by replacing the distilled water in the above-mentioned distilled water container multiple times.
First washing performed by immersing a mesh container holding a glass container into a distilled water container filled with distilled water; After the first washing above, a second washing is performed by immersing the mesh container holding the glass container in a strong acid container filled with strong acid, while heating and maintaining the strong acid at a temperature below its boiling point; and A third washing step performed after the second washing step by immersing the mesh container holding the glass container into the distilled water container filled with distilled water; A glass cleaning method using a strong acid, comprising
In Paragraph 7, The above first to third washes are, A glass cleaning method using strong acid, which is automatically performed by a transfer device that moves and immerses the above-mentioned mesh container between the above-mentioned distilled water container and the strong acid container.
In Paragraph 7, Prior to the above third wash, A glass cleaning method using a strong acid, wherein new distilled water is filled into the above-mentioned distilled water container, and then the above-mentioned third washing is performed.
In Paragraph 7, In the above second wash, The above strong acid is a mixture of 20 vol% nitric acid and 80 vol% distilled water, and A glass cleaning method using a strong acid, wherein the above strong acid is heated in a temperature range of 50 to 90°C.
In Paragraph 7, The above first wash and/or third wash are, A glass cleaning method using a strong acid, performed by replacing the distilled water in the above-mentioned distilled water container multiple times.
In Paragraph 7, The above secondary washing is, A glass cleaning method using strong acid, wherein the used strong acid is filtered through a filter device and then reused a predetermined number of times or less.

Description

Automatic glass cleaning device using strong acid and glass cleaning method using strong acid The present invention relates to an automatic glass cleaning device and a glass cleaning method using a strong acid, which, as one of the pretreatment analysis equipment, can automatically clean various containers (glass) used for sample pretreatment for qualitative and quantitative analysis of trace elements through ICP-AES and ICP-MS analysis without leaving any trace elements remaining. In order to precisely analyze the composition or structure of a sample, the process of preparing the sample using pretreatment analytical equipment is crucial. For example, the analysis of trace elements using ICP-AES (Inductively Coupled Plasma Atomic Emission Spectroscopy) and ICP-MS (Inductively Coupled Plasma Mass Spectroscopy) is primarily used to qualitatively and quantitatively analyze metal elements in samples such as metals, soil, and water. Since these ICP-MS analyzers can measure trace elements at the ppb (parts per billion) or even ppt (parts per trillion) level, the pretreatment of the analytical sample must be carried out with great precision. ICP-AES and ICP-MS pretreatment vessels are used to hold and react samples during the pretreatment process. In the ICP-AES and ICP-MS pretreatment process, the sample is mixed with a strong acid (such as hydrochloric acid, nitric acid, sulfuric acid, or hydrofluoric acid) and heated to ensure that the sample is completely dissolved. The sample prepared in this manner is then transferred to an ICP-AES and ICP-MS analyzer for analysis. To ensure the reliability and accuracy of trace element analysis through ICP-AES and ICP-MS, it must be guaranteed that the ICP-AES and ICP-MS pretreatment vessels are virtually free of impurities. Since ICP-AES and ICP-MS pretreatment vessels are heated using strong acids, they must be made of materials with high chemical and heat resistance. Generally, materials primarily used for ICP-AES and ICP-MS pretreatment vessels include Teflon (PTFE), glass, and quartz, with Teflon vessels being widely used recently. Because glass and quartz were commonly used in the past, ICP-AES and ICP-MS pretreatment vessels are often referred to as glass vessels. Glass vessels can maintain stability even under high temperature and high pressure conditions, allowing them to be used without issues even when reacting with reagents such as strong acids or strong bases. Glassware that has been used even once must be washed to remove residual elements before being reused. Conventionally, residual elements in glassware have been removed by boiling or spraying acid, and specialized cleaning equipment has been provided for this purpose. However, the boiling method is dangerous as it generates acidic gas, while the acid spraying method has the disadvantage of insufficient removal of residual elements, leaving them behind as impurities. FIG. 1 is a drawing illustrating the overall configuration of an automatic glass cleaning device according to one embodiment of the present invention. Figure 2 is a diagram illustrating the primary washing process using distilled water. Figure 3 is a diagram illustrating the secondary washing process using strong acid. Figure 4 is a diagram illustrating the third washing process with distilled water. FIG. 5 is a drawing illustrating an automatic glass cleaning device according to another embodiment of the present invention. FIG. 6 is a flowchart of a glass cleaning method according to one embodiment of the present invention. The advantages and features of the invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques are not specifically described to avoid the present invention being interpreted ambiguously. Throughout the specification, like reference numerals refer to like components. Spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used to facilitate the description of the relationship between one element or component and another, as illustrated in the drawings. Spatially relative terms should be understood as terms that include different orientations of the element during use or operation, in addition to the orientations illustrated in the drawings. For example, if an element illustrated in the drawings is flipped, the element described as "below" or "beneath" of another element may be placed "above" of that o