Novel denitration inlet and outlet flue gas sampling probe

Abstract

The utility model provides a novel denitration inlet and outlet flue gas sampling probe which comprises a probe rod, a flue gas treatment assembly and a mounting flange sleeved with the probe rod, and the probe rod is in threaded connection with the input end of the flue gas treatment assembly after penetrating through the mounting flange; the flue gas treatment assembly comprises a sleeve, a heating cavity, a filter element, an adapter, a sampling pipe, a straight joint and a condenser; the open end of the sleeve is in threaded connection with the mounting flange, the heating cavity is formed in one end of the filter element, the adapter is arranged in the sleeve and connected with the other end of the filter element, and the sampling pipe is communicated with the analyzer after penetrating through the mounting flange, the heating cavity, the adapter, the straight joint and the condenser; the air pump is arranged between the straight joint and the condenser; the probing rod is wrapped with a deslagging assembly, and an air blowing unit of the deslagging assembly is communicated with a gap between the deslagging assembly and the probing rod. According to the smoke sampling probe, the structure of the sampling probe is simplified, the problems of blockage in the probe and corrosion of the outer surface of the probe rod are solved, and the practicability of the smoke sampling probe is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the chemical sampling equipment technical field, specifically relates to a novel denitration inlet and outlet flue gas sampling probe. BACKGROUND

[0002] Flue gas denitration is a common tail gas treatment process in the chemical field, which is used for removing NOx in flue gas X , i.e. nitrogen oxides, which not only has great harm to the environment and human body, but also affects the use of process equipment; therefore, flue gas sampling devices are respectively arranged at the outlet and inlet of the denitration to collect the content of toxic and harmful substances in the flue gas to be treated and the content of harmful substances in the flue gas after denitration treatment, so as to ensure that the emission meets the relevant requirements of environmental protection. However, because the flue gas has the characteristics of high temperature, particle composition and complex composition, the inside of the collection equipment is often blocked, and the external metal probe rod is easy to be corroded, which leads to high maintenance cost, inaccurate measurement parameters and seriously affects the flue gas detection quality. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present application provide a novel denitration inlet and outlet flue gas sampling probe to solve the above-mentioned technical problems in the prior art.

[0004] The utility model provides a novel denitration inlet and outlet flue gas sampling probe, which comprises a probe rod, a flue gas treatment assembly and a mounting flange sleeved with the probe rod, the probe rod is screwed with the input end of the flue gas treatment assembly after penetrating through the mounting flange; the flue gas treatment assembly comprises a sleeve, a heating cavity, a filter core, an adapter, a sampling pipe, a straight-through connector and a condenser, the output end of the condenser is connected with an analyzer; the open end of the sleeve is screwed with the mounting flange, the heating cavity is arranged at one end of the filter core, the adapter is arranged in the sleeve and connected with the other end of the filter core, the sampling pipe is communicated with the analyzer after penetrating through the mounting flange, the heating cavity, the adapter, the straight-through connector and the condenser; an air pump is arranged between the straight-through connector and the condenser, the air pump is connected with the condenser through the sampling pipe; a deslagging assembly is wrapped on the probe rod, the air passage of the blowing unit of the deslagging assembly is communicated with the gap between the deslagging assembly and the probe rod after penetrating through the mounting flange.

[0005] Optionally, the deslagging assembly comprises a first guard plate and a second guard plate which are detachably connected with each other, and an air blowing unit, the probe rod is arranged in a cavity formed by the first guard plate and the second guard plate, and the air outlet of the air blowing unit is opposite to the cavity.

[0006] Optionally, the sampling pipe is wrapped with a heat preservation material.

[0007] Optionally, the probe rod is provided with two or more, and the multiple probe rods are communicated with the sampling tube through the through joint.

[0008] Optionally, the adapter includes a chuck, and the chuck is clamped with the filter element.

[0009] Optionally, the end of the probe rod is provided with a filter screen.

[0010] Optionally, the probe rod includes a telescopic rod, and the telescopic rod is screwed with the probe rod.

[0011] Optionally, the end of the probe rod further includes a temperature sensor, and the temperature sensor is signal-connected with the analyzer.

[0012] The beneficial effects of the utility model are:

[0013] In the novel denitration inlet and outlet flue gas sampling probe, the flue gas enters the heating cavity through the probe rod, so that the filter element is prevented from being blocked due to condensation in the filter element caused by the flue gas directly entering the filter element for precooling; in addition, the probe rod surface for deep detection of the equipment is provided with a blowing type slag removal assembly, so that the particulate matters in the flue gas are prevented from adhering to the probe rod surface, the probe rod is prevented from being corroded by the components in the flue gas, and the detection precision of the probe rod is further affected; in short, the flue gas sampling probe solves the problem of internal blockage of the sampling probe, and solves the problem of corrosion of the outer surface of the probe rod of the sampling probe, and the practicability of the flue gas sampling probe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a front sectional view of a novel denitration inlet and outlet flue gas sampling probe provided by an embodiment of the present application;

[0015] Figure 2 Fig. 3 is a three-dimensional axial side schematic view of the first guard plate and the second guard plate in the slag removal assembly in the embodiment;

[0016] Figure 3 Fig. 4 is an enlarged schematic view of A in Fig. 3. Figure 1

[0017] Reference signs:

[0018] 1: probe rod; 11: filter screen; 2: flue gas treatment assembly; 21: sleeve; 22: heating cavity; 23: filter element; 24: adapter; 25: sampling tube; 26: through joint; 27: condenser; 3: mounting flange; 4: analyzer; 5: slag removal assembly; 51: first guard plate; 52: second guard plate; 53: air blowing unit. DETAILED DESCRIPTION

[0019] ​The technical solutions in the embodiments will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. In addition, "in an embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in any suitable manner in one or more embodiments.

[0020] It should also be noted that, in this document, the terms such as first and second are used only to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. In addition, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the article or terminal device including the element.

[0021] Flue gas denitration is a common tail gas treatment process in the chemical industry, which is used to remove NOx X , i.e. nitrogen oxides, which not only have great harm to the environment and human body, but also affect the use of process equipment; therefore, a flue gas sampling device is arranged at the outlet and inlet of the denitration respectively to collect the content of toxic and harmful substances in the flue gas to be treated, and the content of harmful substances in the flue gas after denitration treatment, so as to ensure that the emission meets the relevant requirements of environmental protection. However, because the flue gas has the characteristics of high temperature, particle composition, complex composition and the like, the inside of the collecting equipment is often blocked, the external metal probe rod 1 is easy to be corroded, which leads to the increase of maintenance cost, and the measured parameters are not accurate, which seriously affects the quality of flue gas detection. Therefore, the utility model provides a novel denitration outlet and inlet flue gas sampling probe to solve the problems of easy blockage inside the sampling probe and easy corrosion of the outer surface of the probe rod 1 of the sampling probe.

[0022] Please refer to the accompanying drawings, the following will be combined with the drawings Figures 1 to 3 The utility model will be described in detail.

[0023] The utility model provides a novel denitration entrance and exit flue gas sampling probe, it includes probe rod 1, flue gas treatment subassembly 2 and with probe rod 1 sleeve installation flange 3, probe rod 1 passes through installation flange 3 and with the input of flue gas treatment subassembly 2 screw joint, flue gas treatment subassembly 2 includes: sleeve 21, heating cavity 22, filter core 23, adapter 24, sampling tube 25, through connector 26, condenser 27, the output of condenser 27 is used for connecting with analyzer 4, the open end of sleeve 21 is screw joint with the surface convex installation turntable of installation flange 3, heating cavity 22 sets up at one end of filter core 23, adapter 24 sets up in the inside sleeve 21 and is connected with filter core 23 other end, sampling tube 25 is passed through installation flange 3, heating cavity 22, adapter 24, through connector 26, condenser 27 and with analyzer 4 intercommunication after, still include the gas pump for extracting the flue gas of detection to be used between through connector 26 and condenser 27, gas pump is connected with condenser 27 through sampling pipe, wherein probe rod 1 is wrapped and is equipped with deslagging subassembly 5, and the airway of blowing unit of deslagging subassembly 5 passes through installation flange 3 and communicates with the clearance of deslagging subassembly 5 and probe rod 1.

[0024] In the utility model, the right end of the sampling probe for sampling is provided with the flue gas treatment subassembly 2, the treated flue gas enters the analyzer 4, and the extracted flue gas is analyzed in terms of classification, component content and temperature parameters.

[0025] In addition, in the foregoing description, the end of the probe rod 1 further comprises a temperature sensor, and the temperature sensor is signal-connected with the analyzer 4.

[0026] Specifically, as shown in Figure 1 and Figure 3As shown, the flue gas is pumped by the air pump from the end of the probe rod 1 on the left into the probe rod 1, and then into the heating cavity 22 inside the sleeve 21 after passing through the side wall of the sleeve 21, so that the flue gas is heated to avoid the phenomenon of condensation caused by the temperature reduction of the flue gas after being transmitted through the probe rod 1. Once condensation occurs, the condensed flue gas particles will adhere to the filter core 23, causing the filter core 23 to be blocked. It should be noted that the heating cavity 22 is arranged close to the mounting flange 3, and has a high temperature, which can be radiated to the surrounding structures such as the mounting flange 3 and part of the probe rod 1, so that the condensation phenomenon does not occur inside the probe rod 1 due to the low local temperature of the probe rod 1. After being heated by the heating cavity 22, the flue gas continues to enter the filter core 23 along the sampling pipe 25, and then enters the condenser 27 outside the sleeve 21 along the sampling pipe 25 after being filtered by the filter core 23 to remove part of the flue ash, and then enters the analyzer 4 after being condensed; because water needs to be removed first during flue gas detection, that is, the principle of condensation is used to remove the moisture in the flue gas, and only the dry flue gas components are allowed to enter the analyzer 4 for analysis and processing.

[0027] It should be noted that the condenser 27 and the analyzer 4 in this embodiment are not limited, and existing flue gas detection analyzers 4 and existing flue gas condensing equipment can be used. The aforementioned heating cavity 22 can use infrared heating equipment, electric heating equipment, etc., and the present embodiment does not make specific limitations, and the preset heating temperature in the heating cavity 22 can be maintained.

[0028] In addition, the aforementioned slag removal assembly 5 includes a first guard plate 51 and a second guard plate 52 which are detachably connected to each other, and a gas blowing unit 53, the probe rod 1 is arranged in a cavity formed by the first guard plate 51 and the second guard plate 52, and the gas outlet of the gas blowing unit 53 is opposite to the cavity.

[0029] As shown in the figure, Figure 2 The semicircular structure forms a cylindrical cavity of a snap type, which wraps the probe rod 1 in the cylindrical cavity, and the cavity and the outer surface of the probe rod 1 are arranged according to a predetermined gap, which is used for blowing the flue gas entering the cavity by the gas blowing unit 53 to avoid adhering to the outer surface of the probe rod 1. Among them, the first guard plate 51 and the second guard plate 52 are connected by bolts after being buckled, or can be connected by buckles, as long as the sealing property is met, and the present embodiment does not make specific limitations. The gas blowing unit 53 can be a compressor or a pump or other equipment that can blow gas.

[0030] In addition, the adapter 24 comprises a chuck, which is clamped with the filter element 23; the end of the probe rod 1 is provided with a filter screen 11. The adapter 24 is provided with the chuck in the embodiment to facilitate the dismounting and mounting of the filter element 23, because the filter element 23 needs to be cleaned or maintained after a period of use, and the chuck structure facilitates the dismounting and mounting of the filter element 23. The specific structure of the chuck is not limited in the embodiment, and a common rotating clamping structure can be used. In addition, the front end of the probe rod 1, i.e. the end that penetrates into the detection environment, is provided with a filter screen 11 for filtering large-particle impurities in the detection environment, so as to avoid blockage after being sucked into the probe rod 1.

[0031] In some embodiments, the sampling pipe 25 is wrapped with a heat preservation material. The heat preservation material can avoid condensation of flue gas during transmission in the sampling pipe 25 due to a large temperature difference between the inner wall of the sampling pipe 25 and the flue gas. The heat preservation material arranged on the outer surface of the sampling pipe 25 can reduce the surface temperature loss of the sampling pipe 25. The heat preservation material can be a conventional heat preservation and temperature-resistant material, such as an aluminum silicate heat preservation material, and the embodiment is not limited in this regard.

[0032] In some embodiments, the probe rod 1 for sampling can also be provided with two or more probe rods 1, which are connected in communication with the sampling pipe 25 through the straight-through joint 26. In the embodiment, multiple detection parameters can be obtained by providing multiple probe rods 1, and the differences between the detection parameters of the multiple probe rods 1 can be compared to obtain a weighted average value, so as to improve the accuracy of detection.

[0033] In other embodiments, the probe rod 1 comprises a telescopic rod, which is screwed with the probe rod 1. The automatic telescopic rod is provided to be compatible with different detection depths, and at the same time, the probe rod 1 has ductility, breaking through the limitation of fixed-point detection, and further improving the practicability of the flue gas collection probe.

[0034] In actual use, a Φ57 stainless steel pipe that is discarded can be used to make a 1.6-meter probe rod 1, and the middle mounting flange 3 can be welded with the probe rod 1, which is used for fixing with the flange plate on the structure outside the detection environment. The sleeve 21 can be a stainless steel sleeve 21 (about 1 cm thick), and other components can be selected and adjusted according to the actual use adaptability.

[0035] Finally, the utility model provides a kind of novel denitration entrance and exit flue gas sampling probe, it includes probe rod 1, flue gas treatment component 2 and with probe rod 1 sleeve installation flange 3, probe rod 1 passes through installation flange 3 and is with the input end of flue gas treatment component 2 screw joint;Flue gas treatment component 2 includes: sleeve 21, heating cavity 22, filter core 23, adapter 24, sampling tube 25, straight through connector 26, condenser 27;The open end of sleeve 21 is screw joint with the surface protruding installation turntable of installation flange 3, heating cavity 22 is set to one end of filter core 23, adapter 24 is set to inside sleeve 21 and is connected with the other end of filter core 23, sampling tube 25 is used to be arranged in installation flange 3, heating cavity 22, adapter 24, straight through connector 26, condenser 27 after with analyser 4 intercommunication;For the air pump of extracting to be detected flue gas is set between straight through connector 26 and condenser 27;Probe rod 1 is wrapped and is equipped with deslagging component 5, and the air passage of the blowing unit of deslagging component 5 passes through installation flange 3 after with the gap of deslagging component 5 and probe rod 1 intercommunication.The utility model simplifies the structure of sampling probe, solves the problem of probe internal blockage and probe rod 1 outer surface corrosion, improves the practicability of flue gas sampling probe.

[0036] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own emphasis. If the description is not exhaustive in some embodiments, it can be referred to the description in other embodiments. Each embodiment in the specification is described in a progressive manner, and each embodiment emphasizes the differences from other embodiments. The same or similar parts between each embodiment can be referred to each other.

[0037] The above embodiments only express the implementation of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the utility model, some modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A novel denitration inlet and outlet flue gas sampling probe, comprising a probe rod (1), a flue gas treatment assembly (2), and a mounting flange (3) sleeved with the probe rod (1), the probe rod (1) being screwed with an input end of the flue gas treatment assembly (2) after penetrating through the mounting flange (3); characterized in that, The flue gas treatment assembly (2) comprises a sleeve (21), a heating cavity (22), a filter core (23), an adapter (24), a sampling pipe (25), a straight-through joint (26), a condenser (27), an output end of the condenser (27) being used for being connected with an analyzer (4); an open end of the sleeve (21) is screwed with the mounting flange (3), the heating cavity (22) is arranged at one end of the filter core (23), the adapter (24) is arranged inside the sleeve (21) and is connected with the other end of the filter core (23), the sampling pipe (25) is communicated with the analyzer (4) after passing through the mounting flange (3), the heating cavity (22), the adapter (24), the straight-through joint (26) and the condenser (27); an air pump is arranged between the straight-through joint (26) and the condenser (27); a slag removal assembly (5) is wrapped on the probe rod (1), a gas passage of a gas blowing unit of the slag removal assembly (5) is communicated with a gap between the slag removal assembly (5) and the probe rod (1) after passing through the mounting flange (3).

2. The novel de-NOx inlet and outlet flue gas sampling probe according to claim 1, characterized in that, The slag removal assembly (5) comprises a first guard plate (51) and a second guard plate (52) which are detachably connected with each other, and a gas blowing unit (53), the probe rod (1) is arranged in a cavity formed by the first guard plate (51) and the second guard plate (52), and a gas outlet of the gas blowing unit (53) is opposite to the cavity.

3. The novel de-NOx inlet and outlet flue gas sampling probe according to claim 2, characterized in that, The sampling pipe (25) is wrapped with a heat preservation material.

4. The novel de-NOx inlet and outlet flue gas sampling probe according to claim 3, characterized in that, The adapter (24) comprises a chuck, and the chuck is clamped with the filter core (23).

5. The novel de-NOx inlet and outlet flue gas sampling probe of claim 4, wherein, An end of the probe rod (1) is provided with a filter screen (11).

6. The novel de-NOx inlet and outlet flue gas sampling probe of claim 1, wherein, The probe rod (1) comprises two or more probe rods, and the probe rods are communicated with the sampling pipe (25) through the straight-through joint (26).

7. The novel de-NOx inlet and outlet flue gas sampling probe of claim 1, wherein, The probe rod (1) comprises a telescopic rod, and the telescopic rod is screwed with the probe rod (1).

8. The novel de-NOx inlet and outlet flue gas sampling probe of claim 1, wherein, An end of the probe rod (1) further comprises a temperature sensor, and the temperature sensor is signal connected with the analyzer (4).

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