KR20130036037A - Non-catalyst type heat combustion oxidization device for water quality analyzer - Google Patents

Abstract

PURPOSE: A non-catalyst heat combustion oxidation device for a water quality analyzer is provided to enhance the surface area of an inner tube and to easily increase temperature by filling a protection tube and a space at the upper end of the inner tube with ceramic balls. CONSTITUTION: A non-catalyst heat combustion oxidation device for a water quality analyzer has a reaction tube(2). The reaction tube comprises: a cylindrical reactor(20); a protection tube(22) which is a cylindrical pipe; and an inner tube(24). The reactor has a space(200) inside. The outer wall of the protection tube is tightly attached to the inner wall of the reactor. The inner tube has a plurality of through-holes(240) formed on the surface and a plurality of through-holes(241) at the upper side end portion. The inner tube has a filter mesh(244) with a plurality of holes(243) which are penetrated from the center to the outer edge.

Description

Non-catalyst type heat combustion oxidization device for water quality analyzer}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a thermal combustion oxidation apparatus used for an apparatus for analyzing water quality in sample water, and more particularly to a catalystless thermal combustion oxidation apparatus for improving the clogging of a gas stream while being used for the apparatus for analyzing water quality in sample water.

Inflow / discharge water of medical device manufacturing water, semiconductor treated water, cooling water, boiler water, tap water, and sewage treatment plant are referred to as Total Organic Carbon (TOC) and Total Nitrogen (TN). Quantity shall be measured and controlled. To this end, a TOC measuring device or a TN measuring device is used. The TOC measuring device or the TN measuring device measures the TOC or TN through the oxidation step and the measuring step, respectively.

In the oxidation step, hot combustion oxidation can be used. The high temperature combustion oxidation method heats to a high temperature of approximately 680 ° C. to oxidize organic matter in the sample. This requires high-purity gases of air and O2, and expensive platinum catalysts are generally used. This method uses a combustion method, which provides excellent oxidation efficiency and analysis of particulate samples and high concentrations of organic wastewater, but requires continuous and thorough maintenance.

In the measurement step, the total amount of organic carbon or total nitrogen is obtained by measuring the amount of gas generated by the oxidation of organic materials using conductivity method or non-dispersive infrared spectroscopy (hereinafter referred to as NDIR method). In the case of the NDIR method, pollutants in the atmosphere and flue gas can be continuously measured by calculating the concentration of the gas by using oxidized gaseous substances such as CO, CO2, and NOx having a specific absorption spectrum with infrared rays. have.

The conventional measuring apparatus uses expensive catalysts such as platinum catalysts in the case of TOC. In the process of measuring salt water rather than pure water, the catalyst is contaminated with salts and the catalyst must be replaced periodically. Therefore, there is a problem that the maintenance cost is high, and in the case of TN, the products of other companies have a problem that the measurement time is relatively long by measuring by the absorbance method.

Another conventional technique for solving this problem is disclosed in EP 1055927 A1. Figure 1 shows the structure of a conventional thermal combustion oxidizer as described above. According to the published patent, a furnace 1 is the first upper heating zone 100 which can reach a maximum temperature of 800 degrees Celsius in this practice and a second lower heating zone 102 which reaches a maximum temperature of 1250 degrees Celsius. Is done. Both heating zones have a hollow cylinder shape and are specially treated to withstand high temperatures, i.e. heating coils 104 wound around the cross section of the reactor-vat 10 made of Kanthal-Fibrothal material. , 106). In addition, a filter 120 is installed at the lower end of the reactor-cylinder 10.

This structure essentially eliminates the use of a catalytic catalytic conversion, thus eliminating the use of a catalyst, and is performing a pure thermal conversion, raising the incineration temperature to more than 1,000 degrees Celsius and preferably to more than 1,300 degrees. The published patent also intends to "melt over time" to the end of the furnace in order to be able to easily remove the salt-component of the sample. By not using the catalyst required in a known manner, the cost savings and maintenance costs are reduced. In addition, according to the published patent, samples exclusively used for the determination of carbon or nitrogen components are sprayed by direct injection into an incinerator of more than 1,300 degrees Celsius, while at the same time a two-stage-method for the selective implementation of this method, which is desired for nitrogen component determination. This applies, where the sample is first taken to the first conversion zone maintaining a maximum of 800 degrees Celsius, and then to the original hot-conversion zone of 1,300 degrees Celsius or more, where the first lower temperature zone is the reduction zone. Used as One new device for this new way of implementation is proposed, the essential element of which uses an incinerator with heating elements which are constantly resistant to high temperatures, in particular Kanthal-Fibrothal material. This incineration furnace has the advantage of enabling simultaneous nitrogen content determination with the hot-conversion-zone, which prefers to maintain above 1,300 degrees Celsius, and distinguishes it from the first zone, which maintains essentially lower temperatures below 800 degrees Celsius. The second section is shown. This zone may optionally be placed above or below high temperature.

However, in the conventional method as described above, the temperature in the vicinity of the heating subhead is too high, such as 1200 degrees or higher, and the temperature in the center is low, such as 750 degrees to 800 degrees, so that the temperature is not evenly distributed, so that the vaporization in the tube is not smooth. As a result, the accuracy of the measurement data is not only deteriorated, but when it is used in brine, the filter 120 is clogged so that the gas cannot escape and the measurement data is inaccurate.

The present invention was developed to solve the above problems, and the technical problem to be achieved by the present invention is to uniformly distribute the temperature in the reaction tube, so that the vaporization is smooth, so that the accuracy of the measurement data is maintained, but the expensive catalyst is not used. In addition, even if impurities such as salt are present in the sample water, there is no tube clogging, thereby providing a non-catalytic thermal combustion oxidizer for a water quality analyzer which is easy to maintain.

The catalyst-free thermal combustion oxidizer for water quality analysis apparatus according to the present invention for achieving the above technical problem,

In the water quality analysis apparatus using a non-catalyst heat combustion gas converter applying a method of converting into CO2 or NOx gas using an oxidation reactor,

The catalyst-free thermal combustion gas converter,

A cylindrical reactor 20 having an upper portion open and extending downward to have an empty space 200 therein and narrowing down to a predetermined diameter near the lower end and having a tube extending downwardly by a predetermined length with the predetermined diameter. Wow:

A protection tube (22) which is a cylindrical pipe in which an outer wall is in close contact with the inner wall of the cylindrical reactor; And

When the length of the protection tube 22 is referred to as L / 5 or less than L / 2 and is inserted and mounted at a predetermined distance from the inner wall inside the protection tube 22 and a plurality of through holes 240 on the surface thereof. The upper end has a plurality of through holes 241 and is closed and the lower end has an outer diameter corresponding to an inner diameter of the protection tube 22 and a central portion 242 corresponding to its inner diameter is opened and the central portion ( And a reaction tube (2) consisting of an inner tube (24) provided with a filter mesh (244) in which a plurality of holes (243) are drilled from 242 to an outer edge thereof.

In addition, the catalyst-free thermal combustion oxidizer for the water quality analyzer is filled in the space between the protection tube 22 and the reaction tube 24 and the outer surface of the protection tube 22 and the protection tube 22. It is preferable to further include a; ceramic ball 400 having a diameter larger than the space between the inner surface.

In addition, the catalyst-free thermal combustion oxidizer for water quality analysis apparatus,

More preferably, the heat dissipation plate 602 provided with the wing-shaped heat dissipation fins 70 is attached to the collection unit 60.

In addition, the inner tube 24,

It is also preferred to be in the form of a corrugated pipe.

In the thermal combustion oxidizer according to the present invention, ceramic balls are filled in the space between the protection tube and the inner tube, and a plurality of through holes increase the surface area of the inner tube, which is advantageous for temperature rise, thereby facilitating vaporization. Water flows into the reactor and vaporizes, and since the central part of the inner tube is open, the vaporized gas can easily escape to the bottom of the reactor, so that the amount of organic carbon or total nitrogen can be Even if the same impurities are present, they can escape through the through-holes of the inner tube, so that the crystals of impurities are not deposited and do not use expensive catalysts to promote vaporization. Reduced maintenance costs due to less maintenance.

1 is a block diagram showing the structure of a conventional thermal combustion oxidizer;
Figure 2 is an exploded perspective view showing the structure of a non-catalyst thermal combustion oxidizer for water quality analysis apparatus according to an embodiment of the present invention,
3 is a cross-sectional view showing a state in which the non-catalytic thermal combustion oxidizer for the water quality analyzer of FIG. 2 is assembled;
4 is a cross-sectional view showing a structure of an embodiment in which a ceramic ball is further applied to the embodiment of FIG. 3;
5 is a view for explaining a state in which the measurement sample water is input by the needle,
6 is a view showing the structure of an embodiment in which the heat sink is attached to the upper end of the collecting unit according to another embodiment of the present invention,
7 is a perspective view illustrating an example of a structure of a heat sink that may be used in FIG. 6;
8 is a perspective view showing the structure of an embodiment in which wrinkles are added to a reaction tube as a catalyst-free thermal combustion oxidizer for a water quality analysis apparatus according to another embodiment of the present invention, and
Fig. 9 is a sectional view of Fig. 8; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 2 is an exploded perspective view illustrating a structure of the non-catalytic thermal combustion oxidizer for a water quality analysis apparatus according to an embodiment of the present invention, and FIG. 3 is a state in which the non-catalyzed thermal combustion oxidizer for the water quality analysis apparatus of FIG. 2 is assembled. Is shown as a cross-sectional view. 2 and 3, the non-catalyst thermal combustion oxidizer for water quality analysis apparatus according to the present invention is a non-catalyst thermal combustion gas converter applying a method of converting into CO2 or NOx gas using an oxidizing reactor,

A cylindrical reactor 20 having an upper portion open and extending downward to have an empty space 200 therein and narrowing down to a predetermined diameter near the lower end and having a tube extending downwardly by a predetermined length with the predetermined diameter. Wow,

A protection tube 22 which is a cylindrical pipe in which an outer wall is in close contact with the inner wall of the cylindrical reactor, and

When the length of the protection tube 22 is referred to as L / 5 or less than L / 2 and is inserted and mounted at a predetermined distance from the inner wall inside the protection tube 22 and a plurality of through holes 240 on the surface thereof. The upper end has a plurality of through holes 241 and is closed and the lower end has an outer diameter corresponding to an inner diameter of the protection tube 22 and a central portion 242 corresponding to its inner diameter is opened and the central portion ( 242 to its outer periphery is provided with a reaction tube 2 consisting of an inner tube 24 on which a filter mesh 244 in which a plurality of holes 243 are perforated is installed.

The non-catalyst thermal combustion gas converter according to the present invention as described above has a plurality of through holes 240 on the surface of the inner tube 24, and the plurality of through holes 240 has a surface area of the inner tube 24. In order to increase the temperature, the vaporization is promoted and the gas vaporized through the through-hole 240 exits. Here, since the center portion 240 of the inner tube 24 is open, gas can easily escape to the lower end of the inner tube 24 so that no crystals of impurities are deposited. In addition, since the catalyst for promoting vaporization is not used, there is no need for maintenance caused by impurities attached to the surface of the catalyst, thereby reducing management costs.

In the present invention, when the length of the inner tube 24 is L, the length of the protection tube 22 is L / 5 or more and less than L / 2. If the length of the inner tube 24 exceeds L / 2 due to the problem that the temperature is lowered by the hole provided in the inner tube 22 is insufficient vaporization, if less than L / 5 vaporized gas will escape Since the space can be narrow, the effect of reducing the blockage is small so that the vaporized gas can easily escape to the outside of the reactor without the blockage due to the salt of the present invention.

In the embodiment described with reference to FIG. 2 and FIG. 3 as described above, a rapid increase and decrease of temperature may occur because the interior is empty, so that when more precise measurement is required, the vaporization of the sample to be measured is promoted. Structure is required. In order to achieve this purpose, FIG. 4 shows a structure of an embodiment in which a ceramic ball is additionally applied to the embodiment of FIG. 2. Referring to FIG. 4, the ceramic ball 400 is filled in the space above the protection tube 22 and the inner tube 24. As such, when the ceramic ball 400 is filled in the space between the protection tube 22 and the reaction tube 24, as shown in FIG. 5, when the number of measurement samples is introduced through the needle, the ceramic ball 400 may be introduced into the space. As the surface area subjected to heat increases, it promotes vaporization.

In addition, the heating coil 28 is not installed between the filter meshes 244 near the upper end of the inner tube 24, and is substantially installed only above the upper end of the inner tube 24 and above the upper end of the inner tube 24. It is most desirable to have a ceramic ball 400 that is larger than the space between the outer side of the inner tube and the inner side of the protection tube 22.

This is because the diameter of the ceramic ball 400 does not enter the space between the outer surface of the inner tube and the inner surface of the protection tube 22, so that the vaporized gas can communicate well as well through the space. Significantly reduce the possibility of clogging the hole 240 provided in the tube (24). If the heating coil 28 is installed between the filter mesh 244 near the upper end of the inner tube 24, the temperature is not buffered by the ceramic ball 400 and thus a sudden change in the temperature of the vaporized gas affects the measurement result. It is not desirable because

6 shows a structure of an embodiment in which a heat sink is attached to an upper end of a collecting unit according to another embodiment of the present invention. Referring to FIG. 6, a heat sink 602 is attached to the collecting unit 60, and when the heat sink 602 for cooling the gas is attached to the collecting unit 60, the cooling of the gas is carried out. As a result, the cooling point is moved to the lower end of the reactor, as compared with the case in which the heat sink is attached to the lower end of the reactor as in the conventional case, thereby preventing the impurity crystals from accumulating inside the reactor. The heat sink can be configured in the form shown in FIG.

8 and 9 show a perspective view and a cross-sectional view of a structure of an embodiment in which wrinkles are added to the reaction tube in the embodiment of FIG. 2 as another embodiment of the present invention, respectively. 8 and 9 the reaction tube is made of a corrugated structure. When the wrinkles are added as described above, even if water flowing through the plurality of through holes 240 flows along the inner wall of the inner tube 24, the surface area subjected to heat is further increased by adding the wrinkles to the inner wall to promote vaporization. Done.

On the other hand, when the measurement sample water is introduced through the needle (needle) in the process of pushing the measurement sample water with air may cause a change in the measured value. In order to prevent this, it is more preferable that the shock absorbing sheave 401 is additionally installed at a predetermined position of the top or middle portion of the ceramic ball 400. When the buffer sieve 401 is installed, the buffer sieve 401 buffers the flow of air when the sample water is ejected while being pushed into the air through the needle to prevent the measured value from changing. Where the air is most affected, the top of the ceramic ball 400 may be additionally installed at a certain position in the middle as needed.

20: reactor
200: empty space
22: protection tube
24: inner tube
240, 241: a plurality of through holes 242: central portion
243: multiple holes 244: filter mesh
400: ceramic ball 401: cushioning sheave
60: collection part
602: heat sink
70: wing type heat radiation fin

Claims (5)

In the non-catalyst thermal combustion gas converter, which is used in a water quality analyzer, and converts into CO2 or NOx gas using an oxidation reactor,
A cylindrical reactor 20 having an upper portion open and extending downward to have an empty space 200 therein and narrowing down to a predetermined diameter near the lower end and having a tube extending downwardly by a predetermined length with the predetermined diameter. :
A protection tube (22) which is a cylindrical pipe in which an outer wall is in close contact with the inner wall of the cylindrical reactor; And
When the length of the protection tube 22 is referred to as L / 5 or less than L / 2 and is inserted and mounted at a predetermined distance from the inner wall inside the protection tube 22 and a plurality of through holes 240 on the surface thereof. The upper end has a plurality of through holes 241 and is closed and the lower end has an outer diameter corresponding to an inner diameter of the protection tube 22 and a central portion 242 corresponding to its inner diameter is opened and the center portion ( 242 to the outer periphery thereof; a reaction tube (2) consisting of; an inner tube (24) provided with a filter mesh (244) in which a plurality of holes (243) are drilled; Catalytic heat combustion oxidizer. The method of claim 1,
The ceramic ball 400 is filled in the space between the protection tube 22 and the reaction tube 24 and has a diameter larger than the space between the outer surface of the protection tube 22 and the inner surface of the protection tube 22. Non-catalyst thermal combustion oxidizer for water quality analysis apparatus further comprising. The method according to claim 1 or 2,
In the vicinity of the collecting portion 60, a heat sink 602 having a wing-shaped heat sink fin 70 is attached,
The heating coil is not installed between the filter mesh 244 near the upper end of the inner tube 24 and is substantially installed only above the upper end of the inner tube 24. . The method of claim 1, wherein the inner tube 24,
Non-catalytic thermal combustion oxidizer for water quality analysis apparatus, characterized in that the form of the corrugated pipe. The method of claim 2,
Non-catalytic thermal combustion oxidizer for water quality analysis device, characterized in that the buffer sieve 401 is additionally installed at the top or middle portion of the ceramic ball 400.

Images