Sampled gas physical filtering device of coal gas analyzer

Abstract

The sampling gas physical filtering device comprises a tank body, a gas inlet, a gas outlet, a drain outlet, a first gas chamber, a second gas chamber, a filtering chamber and a stainless steel filtering plate, the lower part of the tank body is of a hollow conical structure, the middle part and the upper part of the tank body are of cylindrical structures, the first gas chamber is arranged at the lower part of the tank body, and the second gas chamber is arranged at the lower part of the tank body. The middle part of the tank body is a filter chamber, the upper part of the tank body is a second air chamber, a stainless steel filter plate is arranged between the first air chamber and the filter chamber, the bottom of the tank body is provided with an air inlet and a drain outlet, a top cover is attached to the top of the tank body, and an air outlet is formed in the top cover; and the stainless steel filter plate between the first air chamber and the filter chamber is provided with an opening. The sampling gas physical filtering device of the coal gas analyzer is provided with the sponge, the sponge is detached and replaced, and fillers of a drying agent activated aluminum oxide and an adsorbent activated carbon are replaced, so that the cost of spare parts can be saved, and the production cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of sample gas pretreatment equipment for gas analyzers, specifically a physical filtration device for sample gas of a gas analyzer. Background Technology

[0002] A coal gas calorific value analyzer is an analytical instrument used to measure the calorific value of coal gas, which is of great significance for enterprises to make rational production and effective utilization of coal gas.

[0003] In the metallurgical industry, heating furnaces are usually heated by a mixture of coke oven gas and blast furnace gas. The ratio of the two types of gas is adjusted by measuring the calorific value of the mixed gas using a gas calorimeter. However, coke oven gas contains a lot of sulfides, and the coarse coal in the coarse filter cannot effectively adsorb naphthalene, tar, and sulfides, resulting in a shortened lifespan. This also shortens the lifespan of the subsequent fine filter, which in turn affects the service life of the gas calorimeter.

[0004] To address the aforementioned deficiencies, the gas sampling pipeline tank disclosed in CN219324009U achieves multi-stage filtration of the gas by setting up multi-stage filter cartridges, effectively removing impurities such as tar and coke powder contained in the gas; by setting up fixing ears, upper notch and lower notch, the support orifice plate can be installed and limited in the installation ring groove, thereby facilitating the replacement of each stage of filter layer, and has the characteristics of high efficiency, speed and good filtration effect;

[0005] In actual use of the above-mentioned device, although impurities can be removed through multi-stage filtration, the multi-stage filter cartridges need to be replaced regularly after long-term use. Because of the multi-stage filtration method, all of them need to be replaced, which in turn increases the cost of replacement and use.

[0006] Therefore, we proposed a physical filtration device for the sampling gas of a gas analyzer that can effectively solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a physical filtration device for the sampling gas of a gas analyzer, so as to solve the problem mentioned in the background art that the multi-stage filter cartridges on the market need to be replaced regularly after long-term use. Because of the multi-stage filtration method, all of them need to be replaced, which leads to an increase in replacement and usage costs.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a physical filtration device for sampling gas of a gas analyzer, comprising a tank, an air inlet, an air outlet, a drain outlet, a first gas chamber, a second gas chamber, a filter chamber, and a stainless steel filter plate. The lower part of the tank has a hollow conical structure, while the middle and upper parts of the tank have cylindrical structures. The lower part of the tank is the first gas chamber, the middle part is the filter chamber, and the upper part is the second gas chamber. A stainless steel filter plate is provided between the first gas chamber and the filter chamber. The bottom of the tank has an air inlet and a drain outlet, and the top of the tank is fitted with a top cover with an air outlet.

[0009] Preferably, the stainless steel filter plate between the first air chamber and the filter chamber has openings.

[0010] Preferably, the lower part of the filter chamber is filled with desiccant activated alumina, and the upper part of the filter chamber is filled with adsorbent activated carbon.

[0011] Preferably, a sponge is provided between the desiccant activated alumina and the adsorbent activated carbon, between the desiccant activated alumina and the stainless steel filter plate, and between the adsorbent activated carbon and the second air chamber.

[0012] Preferably, a sealing ring is fitted between the top of the tank and the bottom of the top cover, and the sealing ring is made of rubber.

[0013] Preferably, the desiccant activated alumina is in granular form with a diameter of 4-7 mm and a filling height of 5-20 cm.

[0014] Preferably, the adsorbent activated carbon is a cylinder with a diameter of 5 mm, a length of 8-15 mm, and a filling height of 30-50 cm.

[0015] Preferably, the top of the top cover is perforated at equal angles with a pin, and the middle of the pin is perforated with a sealing ring. The bottom of the pin extends into the interior of the tank to form a sliding mechanism. A slider is welded to the lower end of the pin, and the outer end of the slider extends into the interior of the slide groove to form a locking mechanism. The slide groove is formed inside the tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the physical filtration device for the sampling gas of this gas analyzer has lower operating costs and better filtration effect; the operating cost can be reduced by replacing the sponge; and the dehumidification, adsorption of tar, naphthalene, and sulfides are improved by using activated alumina as a desiccant and activated carbon as an adsorbent. The specific details are as follows:

[0017] (1) A sponge is provided. By disassembling and replacing the sponge, as well as replacing the desiccant activated alumina and adsorbent activated carbon fillers, spare parts costs can be saved, which is conducive to reducing production costs.

[0018] (2) It is equipped with desiccant activated alumina and adsorbent activated carbon. The desiccant activated alumina and adsorbent activated carbon can adsorb tar, naphthalene and sulfides in coal gas and also have a dehumidification effect, thereby improving the effect of use.

[0019] (3) A sealing ring is provided. The sealing ring is attached between the top of the tank and the bottom of the top cover. The sealing ring is made of rubber material, which can improve the sealing between the tank and the top cover.

[0020] (4) A pin is provided, through which the top of the top cover is passed at an equal angle, and the middle of the pin passes through the sealing ring. The bottom of the pin extends into the inside of the tank to form a sliding mechanism. A slider is welded to the lower end of the pin, and the outer end of the slider extends into the inside of the slide groove to form a locking mechanism. The slide groove is opened inside the tank. The pin can then quickly fix the top cover, making it easy to disassemble and assemble quickly.

[0021] (5) A stainless steel filter plate is provided. The stainless steel filter plate between the first air chamber and the filter chamber has openings, which can improve the support of the stainless steel filter plate. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the orthographic section of the present invention;

[0024] Figure 3 This is a front view structural diagram of the pin of this utility model;

[0025] Figure 4 This is a schematic diagram of the orthographic structure of the sealing ring of this utility model;

[0026] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0027] Figure 6 This is a front view structural diagram of the pin of this utility model.

[0028] In the diagram: 1. Tank body; 2. Air inlet; 3. Air outlet; 4. Sewage outlet; 5. First air chamber; 6. Second air chamber; 7. Filter chamber; 8. Desiccant: activated alumina; 9. Adsorbent: activated carbon; 10. Stainless steel filter plate; 11. Sponge; 12. Top cover; 13. Sealing ring; 14. Pin; 15. Slide groove; 16. Sliding block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: This utility model solves the problem that existing multi-stage filter cartridges require periodic replacement after long-term use. Because of the multi-stage filtration method, all cartridges need to be replaced, leading to increased replacement costs. The solution reduces usage costs by replacing the desiccant activated alumina 8 and the adsorbent activated carbon 9. The following is disclosed:

[0031] The tank consists of a tank body 1, an air inlet 2, an air outlet 3, a sewage outlet 4, a first air chamber 5, a second air chamber 6, a filter chamber 7, and a stainless steel filter plate 10. The lower part of the tank body 1 has a hollow conical structure, while the middle and upper parts of the tank body 1 have cylindrical structures. The lower part of the tank body 1 is the first air chamber 5, the middle part of the tank body 1 is the filter chamber 7, and the upper part of the tank body 1 is the second air chamber 6. A stainless steel filter plate 10 is provided between the first air chamber 5 and the filter chamber 7. The bottom of the tank body 1 is provided with an air inlet 2 and a sewage outlet 4. The top of the tank body 1 is fitted with a top cover 12, and an air outlet 3 is provided on the top cover 12.

[0032] refer to Figure 1 and Figure 2 When replacement is needed, the sponge 11, desiccant activated alumina 8 and adsorbent activated carbon 9 inside the tank 1 can be replaced. The cost of using the sponge 11, desiccant activated alumina 8 and adsorbent activated carbon 9 is low, thereby reducing the cost of replacement and saving spare parts costs.

[0033] Example 2: This utility model solves the problem of poor sampling effect in existing adsorption methods. By using activated alumina 8 as a desiccant and activated carbon 9 as an adsorbent, the sampling effect can be improved. The following is disclosed:

[0034] The stainless steel filter plate 10 between the first air chamber 5 and the filter chamber 7 has openings. The lower part of the filter chamber 7 is filled with desiccant activated alumina 8, and the upper part of the filter chamber 7 is filled with adsorbent activated carbon 9. Sponges 11 are provided between the desiccant activated alumina 8 and the adsorbent activated carbon 9, between the desiccant activated alumina 8 and the stainless steel filter plate 10, and between the adsorbent activated carbon 9 and the second air chamber 6. A sealing ring 13 is attached between the top of the tank body 1 and the bottom of the top cover 12. The sealing ring 13 is made of rubber. The desiccant activated alumina 8 is granular with a diameter of 4-7 mm and a filling height of 5-20 cm. The adsorbent activated carbon 9 is cylindrical with a diameter of 5 mm and a length of 8-15 mm and a filling height of 30-50 cm.

[0035] refer to Figure 1 and Figure 2 The inlet 2 is connected to a spiral steam-water separator via a pipeline. After the sampling gas passes through the steam-water separator, it enters the tank 1 through the inlet 2 for filtration. The outlet 3 at the top of the tank 1 is connected to a fine filter via a pipeline. After physical adsorption filtration, the sampling gas is further filtered through the fine filter. The stainless steel filter plate 10 has multiple holes, which can effectively allow the sampling gas to pass through and also provide support. The upper layer of the stainless steel filter plate 10 is a sponge 11. The lower part of the filter chamber 7 is filled with desiccant activated alumina 8. The desiccant activated alumina 8 and the adsorbent activated carbon 9 must be uniform and dry to ensure that the sampling gas passes through evenly and has a good adsorption effect. Sponges 11 are filled between the desiccant activated alumina 8 and the adsorbent activated carbon 9, as well as between the adsorbent activated carbon 9 and the second gas chamber 6. The sponge 11 can adsorb some residual water vapor, tar and naphthalene in the sampling gas, thereby improving the sampling quality and facilitating the analysis of the coal gas by the gas analyzer.

[0036] Example 3: This utility model solves the problem of cumbersome replacement of spare parts in existing systems. The pin 14 facilitates quick and easy replacement. The following is disclosed:

[0037] A pin 14 is inserted through the top of the top cover 12 at equal angles, and a sealing ring 13 is inserted through the middle of the pin 14. The bottom of the pin 14 extends into the interior of the tank body 1 to form a sliding mechanism. A slider 16 is welded to the lower end of the pin 14, and the outer end of the slider 16 extends into the interior of the slide groove 15 to form a locking mechanism. The slide groove 15 is opened inside the tank body 1.

[0038] refer to Figures 1 to 6 By rotating the pin 14, the pin 14 rotates, causing the slider 16 to rotate. The slider 16 then slides inside the groove 15. After the pin 14 rotates to the desired position, pulling the pin 14 causes the slider 16 to disengage from the groove 15. This allows the top cover 12 to be separated from the tank 1, facilitating the replacement of the sponge 11, the desiccant activated alumina 8, and the adsorbent activated carbon 9. Furthermore, by reversing the above operation, the top cover 12 can seal the tank 1 through the sealing ring 13, thereby improving the ease of replacement.

[0039] Working principle: When using the physical filtration device for the sampling gas of this type of gas analyzer, firstly, refer to... Figure 1 and Figure 2 When replacement is needed, the sponge 11, desiccant activated alumina 8 and adsorbent activated carbon 9 inside the tank 1 can be replaced, thereby reducing the replacement cost and saving spare parts costs.

[0040] refer to Figure 1 and Figure 2 The air inlet 2 is connected to the spiral steam-water separator through a pipeline. After the sampling gas passes through the steam-water separator, it enters the tank 1 through the air inlet 2 for filtration. The air outlet 3 at the top of the tank 1 is connected to the fine filter through a pipeline. After physical adsorption filtration, the sampling gas is further filtered through the fine filter, which can effectively pass through the sampling gas. The upper layer of the stainless steel filter plate 10 is a sponge 11, which has a good adsorption effect. The sponge 11 is filled between the desiccant activated alumina 8 and the adsorbent activated carbon 9, as well as between the adsorbent activated carbon 9 and the second gas chamber 6. The sponge 11 can adsorb some residual water vapor, tar and naphthalene in the sampling gas, thereby improving the sampling quality.

[0041] refer to Figures 1 to 6 By rotating the pin 14, the pin 14 rotates, causing the slider 16 to rotate. The slider 16 then slides inside the groove 15. After the pin 14 rotates to the position, the pin 14 is pulled, thus allowing the top cover 12 to be separated from the tank 1. This facilitates the replacement of the sponge 11, the desiccant activated alumina 8, and the adsorbent activated carbon 9. Furthermore, by reversing the above operation, the convenience of replacement is improved.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A physical filtration device for sampling gas in a gas analyzer, characterized in that, The tank (1) includes an air inlet (2), an air outlet (3), a sewage outlet (4), a first air chamber (5), a second air chamber (6), a filter chamber (7), and a stainless steel filter plate (10). The lower part of the tank (1) is a hollow conical structure, and the middle and upper parts of the tank (1) are cylindrical structures. The lower part of the tank (1) is the first air chamber (5), the middle part of the tank (1) is the filter chamber (7), and the upper part of the tank (1) is the second air chamber (6). A stainless steel filter plate (10) is provided between the first air chamber (5) and the filter chamber (7). The bottom of the tank (1) is provided with an air inlet (2) and a sewage outlet (4). The top of the tank (1) is fitted with a top cover (12), and an air outlet (3) is opened on the top cover (12). The stainless steel filter plate (10) between the first air chamber (5) and the filter chamber (7) has openings. The lower part of the filter chamber (7) is filled with desiccant activated alumina (8), and the upper part of the filter chamber (7) is filled with adsorbent activated carbon (9). Sponges (11) are provided between the desiccant activated alumina (8) and the adsorbent activated carbon (9), between the desiccant activated alumina (8) and the stainless steel filter plate (10), and between the adsorbent activated carbon (9) and the second air chamber (6). A sealing ring (13) is attached between the top of the tank (1) and the bottom of the top cover (12), and the sealing ring (13) is made of rubber.

2. The sampling gas physical filtration device for a gas analyzer according to claim 1, characterized in that: The desiccant, activated alumina (8), is in the form of granules with a diameter of 4-7 mm and a filling height of 5-20 cm.

3. The sampling gas physical filtration device for a gas analyzer according to claim 1, characterized in that: The adsorbent activated carbon (9) is a cylindrical shape with a diameter of 5 mm and a length of 8-15 mm, and a filling height of 30-50 cm.

4. The sampling gas physical filtration device for a gas analyzer according to claim 1, characterized in that: The top of the top cover (12) is perforated at an equal angle by a pin (14), and the middle part of the pin (14) is perforated by a sealing ring (13). The bottom of the pin (14) extends into the interior of the tank body (1) to form a sliding mechanism. A slider (16) is welded to the lower end of the pin (14), and the outer end of the slider (16) extends into the interior of the slide groove (15) to form a locking mechanism. The slide groove (15) is opened inside the tank body (1).

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