High-temperature soot blowing CEMS sampling device

Abstract

The utility model discloses a high-temperature soot blowing CEMS (continuous emission monitoring system) sampling device which comprises a flue pipe, the flue pipe is connected with a collecting mechanism, a soot blowing mechanism is arranged on the outer side surface of the flue pipe, and the collecting mechanism is connected with the soot blowing mechanism; the collecting mechanism comprises a connector, a filter element mounted on the outer side of the connector, a sampling tube connected to the upper end of the connector, and a collecting tube arranged on the outer surface of the sampling tube; the soot blowing mechanism comprises a mounting frame, an air inlet pipe arranged on the outer side surface of the mounting frame and an air outlet pipe located on the upper surface of the right side of the mounting frame. According to the high-temperature soot blowing CEMS sampling device, the mounting frame is divided into a plurality of communicated areas by the first partition plate and the second partition plate, and air sequentially enters the related areas, so that the heat exchange time between the air and the heat conduction pipe is prolonged, the heat exchange efficiency is improved, additional energy consumption is not needed, heat of high-temperature flue gas is used for heating, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a high-temperature soot blowing CEMS sampling device. Background Technique

[0002] A CEMS sampling device is a device used to monitor the emission of flue gas pollutants. It evaluates the pollution degree by sampling and analyzing the components of the flue gas. In practical applications, soot blowing gas (compressed air) is usually used to remove the accumulated ash in the sampling device and on the filter element to keep it running normally. However, the soot blowing gas may cool the sampling device during the soot blowing process, resulting in a sharp drop in the internal temperature of the sampling device. NH3, SO3, etc. in the flue gas generate ammonium bisulfate, which is likely to block the sampling device pipeline and filter element in the case of a large amount of ash. Content of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the utility model provides a high-temperature soot blowing CEMS sampling device, which solves the problem of avoiding the cooling of the sampling device when cleaning the sampling device by soot blowing.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the utility model provides the following technical solutions: A high-temperature soot blowing CEMS sampling device includes a flue duct, the flue duct is connected to a collection mechanism, a soot blowing mechanism is arranged on the outer surface of the flue duct, and the collection mechanism is connected to the soot blowing mechanism;

[0007] The collection mechanism includes a connector, a filter element installed on the outer side of the connector, a sampling pipe connected to the upper end of the connector, and a collection pipe arranged on the outer surface of the sampling pipe;

[0008] The soot blowing mechanism includes a mounting frame, an air inlet pipe arranged on the outer surface of the mounting frame, a first partition plate and a second partition plate arranged inside the mounting frame, three heat conduction pipes installed inside the mounting frame, and an air outlet pipe located on the upper surface of the right side of the mounting frame.

[0009] Through the above technical solutions, when the collection mechanism is soot blown, the internal temperature of the collection mechanism can be prevented from decreasing.

[0010] Preferably, a slot is arranged on the side of the filter element, and the filter element wraps around the outside of the connector.

[0011] Through the above technical solutions, the use of the filter element can filter the flue gas flowing through the flue duct and reduce the impurities entering the inside of the sampling pipe.

[0012] Preferably, a sampling valve is provided at the outer end of the sampling tube.

[0013] Through the above technical solution, the sampling time can be controlled.

[0014] Preferably, an intake valve is provided at the outer end of the intake pipe.

[0015] Through the above technical solution, the soot blowing time can be controlled.

[0016] Preferably, the first partition plate and the second partition plate are arranged in an interleaved manner, and the first partition plate and the second partition plate are used to guide the air flow.

[0017] Through the above technical solution, the air preheating time is increased, and at the same time, there is no need to heat the air by other means.

[0018] (III) Beneficial Effects

[0019] The present utility model provides a high-temperature soot blowing CEMS sampling device. It has the following beneficial effects:

[0020] In this high-temperature soot blowing CEMS sampling device, the first partition plate and the second partition plate divide the mounting frame into multiple connected areas, and air enters the relevant areas in sequence, thereby extending the heat exchange time between the air and the heat conduction tube, improving the heat exchange efficiency, without additional energy consumption, using the heat of the high-temperature flue gas for heating, energy-saving and environmentally friendly. Secondly, the air is heated by the high-temperature flue gas to keep the temperature of the sampling mechanism stable, avoiding blockage caused by temperature drop, improving the accuracy and reliability of the CEMS system, and ensuring more accurate monitoring of flue gas pollutant emissions. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0022] Figure 2 It is a schematic diagram of the structures of the sampling mechanism and the soot blowing mechanism of the present utility model.

[0023] Figure 3 It is a schematic cross-sectional structure diagram of the soot blowing mechanism of the present utility model.

[0024] Figure 4 It is a schematic diagram of the sampling process of the present utility model.

[0025] Figure 5 It is a schematic diagram of the soot blowing process of the present utility model. Specific Embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figures 1-5 shown, the present invention provides a technical solution: a high-temperature soot blowing CEMS sampling device, including a flue duct 100, the flue duct 100 is connected to a collection mechanism 200, a soot blowing mechanism 300 is arranged on the outer surface of the flue duct 100, and the collection mechanism 200 is connected to the soot blowing mechanism 300;

[0028] The collection mechanism 200 includes a connection head 201, a filter element 202 installed on the outer side of the connection head 201, a sampling pipe 203 connected to the upper end of the connection head 201, and a collection pipe 204 arranged on the outer surface of the sampling pipe 203;

[0029] The soot blowing mechanism 300 includes a mounting frame 301, an air inlet pipe 302 arranged on the outer surface of the mounting frame 301, a first partition 303 and a second partition 304 arranged inside the mounting frame 301, three heat conduction pipes 305 installed inside the mounting frame 301, and an air outlet pipe 306 located on the upper surface of the right side of the mounting frame 301, which can prevent the temperature inside the collection mechanism 200 from decreasing when blowing soot on the collection mechanism 200.

[0030] As Figure 2 shown, a slotted opening is arranged on the side of the filter element 202, the filter element 202 is wrapped outside the connection head 201, and the use of the filter element 202 can filter the flue gas flowing through the flue duct 100 and reduce impurities from entering the inside of the sampling pipe 203.

[0031] As Figure 2 shown, a sampling valve 205 is arranged at the outer end of the collection pipe 204, which can control the sampling time.

[0032] As Figure 3 shown, an air inlet valve 307 is arranged at the outer end of the air inlet pipe 302, which can control the soot blowing time.

[0033] As Figure 3 shown, the first partition 303 and the second partition 304 are arranged in an interlaced manner, and the first partition 303 and the second partition 304 are used to guide the air flow, increase the air preheating time, and at the same time, there is no need to heat the air by other means.

[0034] During use, hot air flows from the right end to the left end of the flue pipe 100. Then, when taking samples, the sampling valve 205 is opened, and the flue gas will pass through the filter element 202 and enter the connector 201, and then flow upward along the sampling pipe 203 and finally enter the collection pipe 204, thus completing the sampling of the flue gas;

[0035] When it is necessary to blow the ash of the collection mechanism 200, by opening the intake valve 307, air enters the interior of the mounting frame 301, and part of the flue gas in the flue pipe 100 also enters the three heat conduction pipes 305. The air will flow inside the mounting frame 301 along the first partition 303 and the second partition 304, and the air is heated through heat transfer and then blown into the sampling pipe 203, and the impurities remaining on the filter element 202 are blown out. This is the usage process of the high-temperature ash-blowing CEMS sampling device. At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature sootblowing CEMS sampling device, comprising a flue pipe (100), characterized in that: The flue pipe (100) and the collecting mechanism (200) are connected to each other, a soot blowing mechanism (300) is provided on the outer surface of the flue pipe (100), and the collecting mechanism (200) and the soot blowing mechanism (300) are connected; The collection mechanism (200) comprises a connector (201), a filter element (202) installed outside the connector (201), a sampling tube (203) connected to the upper end of the connector (201), and a collection tube (204) arranged on the outer surface of the sampling tube (203); The soot blowing mechanism (300) comprises a mounting frame (301), an air inlet pipe (302) arranged on the outer surface of the mounting frame (301), a first partition plate (303) and a second partition plate (304) arranged inside the mounting frame (301), three groups of heat conduction pipes (305) installed inside the mounting frame (301), and an air outlet pipe (306) located on the upper right surface of the mounting frame (301).

2. A high temperature sootblowing CEMS sampling device according to claim 1, characterized in that: A groove is provided on the side of the filter element (202), and the filter element (202) is wrapped around the outside of the connector (201).

3. A high temperature sootblowing CEMS sampling device according to claim 2, characterized in that: The outer end of the collection tube (204) is provided with a sampling valve (205).

4. A high temperature sootblowing CEMS sampling device according to claim 1, characterized in that: An air intake valve (307) is provided at the outer end of the air intake pipe (302).

5. A high temperature sootblowing CEMS sampling device according to claim 4, characterized in that: The first baffles (303) and the second baffles (304) are arranged alternately with each other, and the first baffles (303) and the second baffles (304) are used to guide air flow.

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