KR102529832B1 - Total organic carbon measuring device that can replace the desalination filter without turning off the heated combustion part - Google Patents

Abstract

The present invention relates to a total organic carbon measuring device capable of replacing a desalination filter without turning off a heated combustion part. The present invention relates to a total organic carbon measuring device including a combustion part in which a catalyst is supported on the inner lower portion of a combustion pipe and which has a heater for heating the combustion pipe to a temperature of 650℃ or higher. A desalination filter unit is built in the upper inner portion of the combustion pipe to remove salt contained in a sample, and the desalination filter unit allows only the desalination filter to be replaced while maintaining operation without turning off the heated combustion part, such that the operating efficiency of the device and overall maintenance costs can be reduced.

Description

Total organic carbon measuring device that can replace the desalination filter without turning off the heated combustion part}

The present invention relates to a total organic carbon measuring device capable of replacing a salt removal filter without turning off a heated combustion unit, and more particularly, by installing a salt removal filter on the inner upper portion of a combustion tube provided in the lower inner portion of the catalyst supporting unit to be contained in a sample. It prevents damage to the catalyst by salt by allowing it to pass through the catalyst after removing the salt, and it is possible to use it by simply replacing the salt removal filter without turning off the heated combustion part during use. In this way, only the salt removal filter Since it can be replaced, it is possible to increase the operating efficiency of the device, reduce cost as well as reduce replacement time, and increase the catalyst replacement cycle. This is a total organic carbon measuring device that can replace the salt removal filter without turning off the heated combustion part. it's about

The amount of organic substances contained in medical manufacturing water, semiconductor processing water, cooling water, boiler water, river water, tap water, and influent/effluent of wastewater treatment plant is found. Total Organic Carbon (hereinafter referred to as TOC) is a process of converting organic substances contained in sample water into carbon dioxide using an oxidation reactor where high heat of 650 ° C or higher is applied, and gaseous substances such as CO or CO ₂ Carbon dioxide by using NDIR (Non-dispersive infrared absorption) analysis method that continuously measures pollutants in the air and flue gas by obtaining the concentration of a specific component by using the specific absorption spectrum for infrared light. concentration is measured.

These conventional TOC measuring devices use expensive catalysts such as platinum catalysts in order to remove impurities from samples and increase measurement accuracy, and use a lot of measuring devices having a combustion type configuration.

However, in the conventional TOC measuring device, when a sample to be measured contains salt, the sample is burned in the combustion unit and a salt residue remains.

The salt residue remaining in the combustion unit expands while permeating the catalyst provided in the combustion unit, breaks the catalyst, and promotes powderization of the catalyst, so the amount of catalyst is reduced, thereby shortening the use cycle of the catalyst. It also causes an additional problem of shortening.

In addition, in the combustion part, the transfer path of the sample gas is blocked by salt residues and catalyst powder, so the delivery of the sample gas to the detector is blocked and the sample gas is not delivered well, which makes measurement very difficult. Due to the above problems, when the measuring device is operated continuously, there is the inconvenience and inconvenience of frequently replacing catalysts such as platinum catalysts, and there are difficulties in using and maintaining the measuring device, such as rising maintenance costs. It exists.

In addition, when the catalyst needs to be replaced as described above, the power of the heater on the combustion part must be turned off and replaced when the temperature drops to room temperature, and the temperature must be raised and heated again to a temperature of 650 ° C or higher, which is an appropriate heating temperature, and the temperature is raised again. Since the measurement of the sample can be restarted after the measurement is made, there is a problem in that it takes a lot of time, such as about 4 to 5 hours, and also takes a lot of time to stabilize the measuring device.

Korean registered patent 10-2231380 Korean Registered Patent No. 10-1304118

The present invention has been made to solve the above-mentioned conventional problems, and has a configuration including a salt removal filter unit for removing salt contained in a sample, but simply replaces only the salt removal filter without turning off the heated combustion unit. It is to provide a total organic carbon measuring device that can be used.

The present invention makes it possible to replace and use a salt removal filter in a short time, which is used to remove salt and suspended solids generated in the combustion process of a sample injected into the combustion unit without turning off the combustion unit heated to a temperature of 650 ° C or higher. It is an object of the present invention to provide a total organic carbon measuring device capable of replacing a desalination filter without turning off a heated combustion unit capable of stably managing data of the device.

In the present invention, by installing a salt removal filter on the inner upper part of the combustion tube provided in the lower inner part of the catalyst supporting part, it is possible to pass through the catalyst in a state in which the salt contained in the sample is removed, thereby preventing damage to the catalyst due to salt and heating during use. It is possible to simply replace and use only the desalination filter without turning off the burner, and since only the desalination filter needs to be replaced in this way, it is possible to increase the operation efficiency of the device, reduce cost as well as reduce replacement time, It is an object of the present invention to provide a total organic carbon measuring device capable of replacing a desalination filter without turning off a heated combustion unit that can increase a catalyst replacement cycle.

In the present invention, only the salt removal filter needs to be periodically replaced without turning off the heated combustion unit, thereby reducing the stabilization time of the total organic carbon measurement device and helping to manage water quality data. It is to provide a replaceable total organic carbon measuring device.

The present invention is an apparatus for measuring total organic carbon including a combustion unit having a heater supported on a lower inner portion of a combustion tube and having a heater for heating the combustion tube to a temperature of 650 ° C. The desalination filter unit is characterized in that it is provided so that it can be used for replacement without turning off the heated heater.

Here, the salt removal filter unit is a salt removal filter made of a material having heat resistance, corrosion resistance and wear resistance; It is characterized in that it comprises a; salt removal filter cradle for the desalination filter is charged and can be used by replacing it from the combustion pipe.

Here, the salt removal filter is made of any one group selected from oxide-based ceramic fibers, nitride-based ceramic fibers, carbide-based ceramic fibers, and quartz fibers, or a combination of two or more, wherein the oxide-based ceramic fibers are alumina (Al ₂ O ₃ ), zirconia (ZrO ₂ ), and silica (SiO ₂ ), and the nitride-based ceramic fiber is selected from silicon nitride (Si ₃ N ₄ ), aluminum nitride (AlN), and boron nitride (BN), and the carbide The ceramic fibers are selected from silicon carbide (SiC) and titanium carbide (TiC).

Here, the salt removal filter cradle is made of any one group selected from oxide-based ceramics, nitride-based ceramics, carbide-based ceramics, and quartz, or a combination of two or more, wherein the oxide-based ceramics are alumina (Al ₂ O ₃ ) , Zirconia (ZrO ₂ ) and silica (SiO ₂ ) are selected and used, and the nitride-based ceramic material is selected from silicon nitride (Si ₃ N ₄ ), aluminum nitride (AlN), and boron nitride (BN), and the carbide-based ceramic material is used. The material is characterized in that it is selected from silicon carbide (SiC) and titanium carbide (TiC).

Here, the desalination filter cradle includes a charging unit in which the desalination filter is filled; It is characterized in that it includes; a holding portion connected to the charging portion and serving as a handle when replacing the desalination filter.

As described above, according to the present invention, by providing the salt removal filter unit in the combustion unit, it is possible to easily remove the salt contained in the sample and send only the filtered sample to the catalyst supporting unit, and the salt removal filter without turning off the heated combustion unit. It is possible to provide a total organic carbon measuring device that can replace the.

According to the present invention, it is possible to remove salt and suspended solids from the sample injected into the combustion unit through the provision of a salt removal filter unit in the combustion unit, and in particular, the salt removal filter can be quickly removed without turning off the combustion unit heated to a temperature of 650 ° C or higher. It is possible to provide a total organic carbon measuring device that can be replaced within a timely manner and can stably manage the data of the measuring device.

According to the present invention, by installing a salt removal filter on the inner upper part of the combustion pipe, it is possible to pass through the catalyst in a state in which salt contained in the sample is removed, so that damage to the catalyst due to salt can be prevented, and the heated combustion part is not turned off during use. Since only the desalination filter needs to be replaced in this way, the operation efficiency of the device can be improved, cost can be reduced as well as replacement time can be reduced, and the replacement cycle of the catalyst can be shortened. A scalable total organic carbon measuring device can be provided.

The present invention can provide a total organic carbon measuring device that can shorten the stabilization time of the total organic carbon measuring device and help manage water quality data because only the salt removal filter needs to be periodically replaced without turning off the power to the heated combustion unit. .

1 is a block diagram showing a schematic configuration of a total organic carbon measuring device capable of replacing a salt removal filter without turning off a heated combustion unit according to the present invention.
Figure 2 is a view showing the main part of the combustion unit in the present invention.
Figure 3 is a view showing the desalination filter holder of the present invention.

An object of the present invention is to provide a total organic carbon measuring device capable of replacing a desalination filter without turning off a heated combustion unit.

Generally, total organic carbon (TOC) means the sum of organically bound carbon in water, and there are high temperature combustion oxidation method and UV oxidation method as a method for measuring total organic carbon, and currently, high temperature combustion oxidation method is mainly used. are using

Here, the high-temperature combustion oxidation method is a method in which an appropriate amount of a sample is filled with an oxidative catalyst to measure superorganic carbon present in water, put into a high-temperature combustor, and then oxidized to carbon dioxide through combustion to quantify the organic carbon in the water.

At this time, in the quantitative method, the amount of total organic carbon is obtained by removing inorganic carbon beforehand and measuring or subtracting the inorganic carbon from the total carbon after measuring the inorganic carbon.

On the other hand, an ordinary total organic carbon measuring device consists of an oxidation unit and a detection unit, and the oxidation unit burns the sample in a high-temperature reactor filled with an oxidizing catalyst such as cobalt oxide, platinum, or barium chromate at a temperature of 650°C or higher to convert carbon in the sample into carbon dioxide. It is converted and transported to the detection unit. In addition, the detection unit is measured by a non-dispersive infrared (NDIR) method, a coulometric titration method, or an equivalent detection method.

Hereinafter, a total organic carbon measuring device capable of replacing a salt removal filter without turning off a heated combustion unit according to the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings.

1 is a block diagram showing the schematic configuration of a total organic carbon measuring device capable of replacing a salt removal filter without turning off the heated combustion unit of the present invention, FIG. 2 is a diagram showing the main parts of the combustion unit in the present invention, and FIG. is a view showing the desalination filter cradle of the present invention.

Referring to FIG. 1, the total organic carbon measuring device capable of replacing the desalination filter without turning off the heated combustion unit according to an embodiment of the present invention includes a sample storage unit (1), a combustion unit (2), a multi-valve (3), It may include a measuring unit 4 and a sample injecting unit 10 .

The sample storage part (1) is a part where a sample to be measured for measuring the degree of water pollution is stored, and the combustion part (2) is a part to heat the sample stored in the sample storage part (1) and is a part to be measured. As the sample is put into the combustion unit 2 and burned, inorganic carbon is removed, and the sample can be converted into carbon dioxide as it is vaporized.

The combustion unit 2 may basically include a combustion pipe 20, a heater, and a fan to burn a sample.

A sample is introduced into the inlet of the combustion pipe 20, and a discharge pipe through which the sample after combustion can be discharged may be provided at one side of the combustion pipe 20.

Therefore, the combustion unit 2 may be configured in the form of a box-shaped module as a configuration capable of burning a sample.

The multi-valve 3 is a part that performs a pumping role to transfer the sample stored in the sample storage unit 1 to the combustion unit 2, and the multi-valve 3 is a syringe that basically serves as a pump. (CYRINGE) configuration is provided so that the sample stored in the sample storage unit 1 can be transferred to the combustion unit 2 side by syringe pumping.

The sample injection part 10 is a part for injecting the sample transferred from the multi-valve 3 into the combustion part 2 by a set amount.

The measurement unit 4 measures the total organic carbon content in the gaseous sample vaporized through the combustion unit 2 and finally determines the degree of water pollution. The amount of carbon dioxide released is measured and the degree of contamination of the water quality is judged through the detected amount.

Hereinafter, the combustion unit 2, which is a key feature of the present invention, will be described in more detail with reference to FIGS. 2 and 3.

Referring to FIG. 2 , in the present invention, the combustion unit 2 includes a combustion pipe 20, a catalyst supporting unit 21, and a salt removal filter unit 22.

The combustion tube 20 is arranged to be heated by a heater and is provided as a tube body having an inlet and an outlet for sample input and output.

The combustion pipe 20 is provided to be heated to a temperature of 650° C. or higher by a heater.

The combustion pipe 20 may be a body in which a diameter of an outlet part is reduced compared to an inlet part.

The catalyst supporting part 21 is installed at the inner lower part of the inlet side of the combustion pipe 20 and is a component for removing impurities such as organic substances when a sample passes through the catalyst.

The salt removal filter unit 22 is a component for performing a function of filtering and removing salt from the sample when salt is contained in the sample by being installed on the inner upper part of the inlet side of the combustion pipe 20.

At this time, the desalination filter unit 22 is provided to be replaced and used in a state in which the combustion pipe 20 is heated to a temperature of 650° C. or higher without turning off the heater.

To this end, the salt removal filter unit 22 is provided with a salt removal filter 23 and a salt removal filter holder 24.

The salt removal filter 23 is preferably made of a material having heat resistance, corrosion resistance and wear resistance.

Specifically, the salt removal filter 23 may be formed of any one group selected from oxide-based ceramic fibers, nitride-based ceramic fibers, carbide-based ceramic fibers, and quartz fibers, or a combination of two or more.

The salt removal filter 23 has the properties of a cotton ball such as glass wool, such as glass fiber, and has pores formed in the tissue, and serves to filter and remove salt contained in the sample while passing the sample.

The oxide-based ceramic fibers may be selected from alumina (Al ₂ O ₃ ), zirconia (ZrO ₂ ), and silica (SiO ₂ ).

The nitride-based ceramic fibers may be selected from among silicon nitride (Si ₃ N ₄ ), aluminum nitride (AlN), and boron nitride (BN).

The carbide-based ceramic fibers may be selected from among silicon carbide (SiC) and titanium carbide (TiC).

Referring to FIG. 3, the desalination filter holder 24 will be described in detail.

The desalination filter holder 24 is configured to allow the desalination filter 23 to be charged and easily replaced from the combustion pipe 20 .

Specifically, the salt removal filter holder 24 may be made of any one group selected from oxide-based ceramics, nitride-based ceramics, carbide-based ceramics, and quartz, or a combination of two or more.

The oxide-based ceramic material may be selected from alumina (Al ₂ O ₃ ), zirconia (ZrO ₂ ), and silica (SiO ₂ ).

The nitride-based ceramic material may be selected from silicon nitride (Si ₃ N ₄ ), aluminum nitride (AlN), and boron nitride (BN).

The carbide-based ceramic material may be selected from silicon carbide (SiC) and titanium carbide (TiC).

The salt removal filter holder 24 is a molded body made of a material selected from oxide-based ceramics, nitride-based ceramics, carbide-based ceramics, and quartz.

In addition, the desalination filter holder 24 includes a charging part 25 and a holder 26.

The filling part 25 is configured to fill and support the salt removal filter 23 .

The filling part 25 is a body with an open top having a wall, and has a configuration in which seating supports for supporting the desalination filter 23 are spaced apart on the bottom surface and openings for the passage of the sample are formed.

The holding part 26 is connected to the charging part 25 and is configured to easily replace the desalination filter 23 charged by the charging part 25, and is a body having a certain length and vertically arranged, It serves as a handle for easy withdrawal.

As such, the combustion unit, which is the main core in the total organic carbon measuring device capable of replacing the desalination filter 23 without turning off the heated combustion unit 2 according to the present invention described in detail with reference to FIGS. 1 to 3 The side operation and use relationship are briefly described as follows.

In the combustion unit 2, a heater is operated to heat the combustion pipe 20 to a temperature of 650° C. or higher.

A sample is injected into the combustion tube 20 of the combustion unit 2 through the sample injection unit 10 while the combustion tube 20 is heated to a temperature higher than a certain temperature.

Since the sample injected into the inlet of the combustion pipe 20 passes through the salt removal filter 23 of the salt removal filter unit 22 installed at the upper inner side of the combustion pipe 20 at the same time as the injection, the salt removal filter 23 The salt is removed, and a moving flow is formed in the catalyst supporting part 21 installed at the inner lower part of the combustion pipe 20 in a state in which the salt is removed.

Here, since the salt contained in the sample is removed through the salt removal filter unit and salt residues are prevented from being left in the combustion tube 20, smooth movement of the sample gas vaporized by combustion to the catalyst supporting unit 21 is possible. and since salt is removed, damage to the catalyst in the catalyst supporting part can be prevented and delayed.

In addition, when the salt removal filter unit 22 installed and used in the combustion pipe 20 needs to be replaced during use, the combustion unit 2 in a heated state is not turned off, that is, the operation of the combustion unit 2 is performed. In the maintained state, the desalination filter holder 24 is taken out of the combustion pipe 20, and only the salt removal filter 23 filled in the desalination filter holder 24 is replaced, and then returned to the inner upper part of the combustion pipe 20. Just push and install.

Therefore, the salt removal filter unit 22 provides the advantage of being able to simply and easily replace and use only the salt removal filter 23 without turning off the heated combustion unit 2, and in this way, the combustion unit 2 Since only the desalination filter (23) needs to be replaced during heating of the device, the overall operation efficiency of the device can be increased and maintenance costs can be reduced, as well as the replacement time can be greatly reduced and the catalyst replacement cycle can be extended. provides advantages.

The sample from which salts are removed having a moving flow to the catalyst supporting unit 21 passes through the catalyst of the catalyst supporting unit 21, and impurities including organic substances contained in the sample are removed by the catalyst.

In addition, since the sample injected into the combustion tube 20 is heated to a certain temperature or higher by the heater, it is vaporized when passing through the combustion tube 20, and thus has a moving flow in a gaseous sample, that is, a sample gas state.

The sample gas that has passed through the combustion pipe 20 is firstly desalted with combustion on a desalination filter, and secondarily transported to the measuring unit 4 in a state in which impurities including organic substances are removed by a catalyst. and the total organic carbon content of the sample is measured in the measuring unit (4).

Through this, in the total organic carbon measuring device capable of replacing the desalination filter without turning off the heated combustion unit of the present invention, the salt removal of the sample without stopping the operation of the device while maintaining the operating state of the heated combustion unit 2 Only the salt removal filter 23 used in can be replaced and used, and since the stabilization time of the total organic carbon measuring device is greatly shortened, it is possible to provide an effect that helps management of water quality data.

Those skilled in the art to which the present invention pertains will understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention. should be interpreted

1: sample storage unit 2: combustion unit
3: multi-valve 4: measuring part
5: sample transport pipe 6: carrier gas pipe
7: first drain pipe 8: second drain pipe
9: branch pipe 9a: gas transfer pipe
10: sample injection unit 20: combustion pipe
21: catalyst support unit 22: salt removal filter unit
23: desalination filter 24: desalination filter holder
25: charging part 26: mounting part

Claims (5)

A device for measuring total organic carbon including a combustion unit having a catalyst supported on a lower inner portion of a combustion tube and having a heater for heating the combustion tube to a temperature of 650° C. or higher,
A desalination filter unit is built into the upper inner portion of the combustion pipe,
The salt removal filter unit is provided so as to be replaceable without turning off the heated heater,
The salt removal filter unit,
A salt removal filter made of a material having heat resistance, corrosion resistance and abrasion resistance;
A desalination filter cradle for charging the desalination filter and allowing it to be replaced from the combustion pipe;
The salt removal filter,
It is made of any one group or a combination of two or more selected from oxide-based ceramic fibers, nitride-based ceramic fibers, carbide-based ceramic fibers, and quartz fibers,
The oxide-based ceramic fiber is selected from among alumina (Al ₂ O ₃ ), zirconia (ZrO ₂ ), and silica (SiO ₂ ),
The nitride-based ceramic fiber is selected from among silicon nitride (Si ₃ N ₄ ), aluminum nitride (AlN), and boron nitride (BN),
The total organic carbon measuring device capable of replacing the salt removal filter without turning off the heated combustion unit, characterized in that the carbide-based ceramic fiber is selected from silicon carbide (SiC) and titanium carbide (TiC). delete delete According to claim 1,
The desalination filter holder,
It is made of any one group or a combination of two or more selected from oxide-based ceramic materials, nitride-based ceramic materials, carbide-based ceramic materials, and quartz,
The oxide-based ceramic material is selected from among alumina (Al ₂ O ₃ ), zirconia (ZrO ₂ ), and silica (SiO ₂ ),
The nitride-based ceramic material is selected from among silicon nitride (Si ₃ N ₄ ), aluminum nitride (AlN), and boron nitride (BN),
The total organic carbon measuring device capable of replacing the salt removal filter without turning off the heated combustion unit, characterized in that the carbide-based ceramic material is selected from silicon carbide (SiC) and titanium carbide (TiC). According to claim 1,
The desalination filter holder,
a charging unit in which the desalination filter is filled;
A total organic carbon measuring device capable of replacing the salt removal filter without turning off the heated combustion unit, characterized in that it comprises a;

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