CN212807761U

CN212807761U - Activated carbon adsorption tube for sampling mercury in flue gas

Info

Publication number: CN212807761U
Application number: CN202022000422.2U
Authority: CN
Inventors: 余靖; 朱帅; 马大卫; 李德林; 杨娴; 程靖; 陈乾; 张其良
Original assignee: Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd; Anhui Xinli Electric Technology Consulting Co Ltd
Current assignee: Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd; Anhui Xinli Electric Technology Consulting Co Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-03-26
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses an activated carbon adsorption tube for flue gas mercury sampling, which relates to the technical field of flue gas detection.A first glass tube and a second glass tube are communicated and detachably connected through a connecting rubber tube, the connecting rubber tube is detachably sleeved at the tail end of the first glass tube and the outer part of the front end of the second glass tube, and the front end of the first glass tube and the tail end of the second glass tube are plugged by detachable end sockets; the first glass tube and the second glass tube are internally densely filled with activated carbon to form an activated carbon section, and quartz wool is arranged at two ends of the activated carbon section. The activated carbon section of the utility model is positioned at the joint of the end of the first glass tube and the second glass, when the sample is transferred, the connecting rubber tube is disassembled, so that the sample can be easily taken out, and the problem of difficult sample transfer caused by overlong adsorption tube is solved; the first glass tube and the second glass tube can be used as containers for transferring samples after being disassembled, the samples are directly transferred into the sample boat from the inside of the containers, the secondary transfer of the samples is avoided, the probability of sample pollution is reduced, and the accuracy of detection results is improved.

Description

Activated carbon adsorption tube for sampling mercury in flue gas

Technical Field

The utility model relates to a flue gas detects technical field, concretely relates to adsorption tube for carrying out flue gas mercury sampling.

Background

Mercury is a pollutant with persistence and biological enrichment, and mercury emission in human industrial activities, especially mercury emission in coal-fired power plants, steel, cement industries and other industries, is one of important causes of environmental mercury pollution. Mercury emission monitoring is an indispensable task for realizing a pollution source of exhaust gas emission.

The method is a widely applied flue gas mercury sampling analysis method at present, which adopts an activated carbon adsorption tube to absorb and collect mercury in flue gas and then utilizes an atomic absorption spectrophotometry to quantitatively analyze the mercury. The active carbon adsorption tube involved in the sampling analysis method is in two sections, and each section is independently analyzed. In actual operation, because the sampling pipe is longer, the active carbon section is loaded closely knit and the sample boat volume is less, the back is accomplished in flue gas mercury collection, and the operation degree of difficulty that the active carbon was taken out by in the sampling pipe is higher, simultaneously, for preventing that the sample from spilling, often not directly shift the sample to the sample boat, and adopt the transfer mode of secondary transfer, lead to the active carbon to shift the complicated, the operation degree of difficulty height, the transfer efficiency of operation process of sample boat to be low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses just in order to avoid the weak point that above-mentioned prior art exists, provide an active carbon adsorption tube for flue gas mercury sampling.

The utility model discloses a solve technical problem and adopt following technical scheme: an active carbon adsorption tube for sampling flue gas mercury is characterized in that the tail end of a first glass tube is communicated with the front end of a second glass tube through a connecting rubber tube and is detachably connected with the front end of the second glass tube, and the tail end of the second glass tube is communicated with a sampling gun; the connecting rubber tube is detachably sleeved outside the tail end of the first glass tube and the front end of the second glass tube, and the front end of the first glass tube and the tail end of the second glass tube are sealed by detachable seal heads; the first glass tube and the second glass tube are internally densely filled with activated carbon to form an activated carbon section, and quartz wool is arranged at two ends of the activated carbon section.

Furthermore, a gasket is arranged in the connecting rubber tube and is arranged between the tail end face of the first glass tube and the front end face of the second glass tube.

Furthermore, both ends of the connecting rubber tube are provided with annular bayonets positioned on the inner side wall of the connecting rubber tube, and the two bayonets are respectively matched and clamped with annular clamping blocks arranged on the outer side wall of the tail end of the first glass tube and on the outer side wall of the front end of the second glass tube.

Furthermore, the quartz wool at the tail end of the activated carbon section in the first glass tube is flush with the pipe orifice at the tail end of the first glass tube, and the quartz wool at the front end of the activated carbon section in the second glass tube is flush with the pipe orifice at the front end of the second glass tube.

Furthermore, the first glass tube is of a straight tube structure, and the second glass tube is of a tubular structure with the diameter of the tail end decreasing progressively.

Further, the diameter of the pipe orifice at the tail end of the second glass pipe is half of that of the pipe orifice at the front end of the second glass pipe.

Furthermore, the connecting rubber tube is made of polytetrafluoroethylene.

Further, the activated carbon is treated with potassium iodide.

The utility model provides an active carbon adsorption tube for flue gas mercury sampling has following beneficial effect:

1. the end of the first glass tube and the front end of the second glass tube are detachably connected through the connecting rubber tube, and the activated carbon section is positioned at the end of the first glass tube and the front end of the second glass tube, so that a sample can be easily taken out by disassembling the connecting rubber tube when the sample is transferred, and the problem of difficult sample transfer caused by overlong adsorption tube is solved;

2. the first glass tube and the second glass tube of the utility model can be used as containers for transferring samples after being disassembled, and the samples are directly transferred into the sample boat from the inside of the containers, so that the secondary transfer of the samples is avoided, the probability of sample pollution is reduced, and the accuracy of the detection result is improved;

3. the utility model can realize the transfer of the sample rapidly, reduce the time of exposing the sample and further improve the accuracy of the detection result;

4. the utility model discloses simple structure, use are convenient, but first glass pipe and second glass pipe reuse do benefit to the control that detects the cost.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

FIG. 2 is a cross-sectional view taken along line A-A of the present invention;

fig. 3 is a cross-sectional view at the point B-B of the present invention.

In the figure:

1. a first glass tube; 2. a second glass tube; 31. quartz wool, 32, an activated carbon section; 4. a connecting rubber tube 41, a bayonet 42 and a gasket; 5. and (5) sealing the head.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 3, the structural relationship is as follows: the tail end of the first glass tube 1 is communicated with the front end of the second glass tube 2 through a connecting rubber tube 4 and is detachably connected with the front end of the second glass tube 2, and the tail end of the second glass tube 2 is communicated with a sampling gun; the connecting rubber tube 4 is detachably sleeved outside the tail end of the first glass tube 1 and the front end of the second glass tube 2, and the front end of the first glass tube 1 and the tail end of the second glass tube 2 are blocked by a detachable end socket 5; activated carbon is densely filled in the first glass tube 1 and the second glass tube 2 to form an activated carbon section 32, and quartz wool 31 is arranged at two ends of the activated carbon section 32.

Preferably, a gasket 42 is provided in the connecting hose 4, and the gasket 42 is disposed between the end surface of the first glass tube 1 and the front end surface of the second glass tube 2.

Preferably, both ends of the connecting rubber tube 4 are provided with annular bayonets 41 located on the inner side wall thereof, and the two bayonets 41 are respectively matched and clamped with annular clamping blocks arranged on the outer side wall of the tail end of the first glass tube 1 and the outer side wall of the front end of the second glass tube 2.

Preferably, the quartz wool 31 at the end of the activated carbon section 32 in the first glass tube 1 is flush with the end pipe opening of the first glass tube 1, and the quartz wool 31 at the front end of the activated carbon section 32 in the second glass tube 2 is flush with the front end pipe opening of the second glass tube 2.

Preferably, the first glass tube 1 is in a straight tube structure, and the second glass tube 2 is in a tubular structure with the diameter of the tail end decreasing.

Preferably, the end of the second glass tube 2 has a nozzle diameter half of the nozzle diameter of the front end thereof.

Preferably, the connecting hose 4 is made of polytetrafluoroethylene.

Preferably, the activated carbon is treated with potassium iodide.

When in specific use, the method comprises the following steps:

step one, carrying out high-temperature calcination on the tweezers and the sample boat;

after the adsorption tube sampling is finished, the annular clamping block at the tail end of the first glass tube 1 and the annular clamping block at the front end of the second glass tube 2 are separated from the corresponding bayonets 41, and the first glass tube 1 and the second glass tube 2 are respectively disassembled from the connecting rubber tube 4;

taking out the quartz wool 31 at the tail end of the first glass tube 1 or the front end of the second glass tube 2 by using tweezers, and then respectively moving the activated carbon in the first glass tube 1 or the second glass tube 2 into corresponding sample boats;

and step four, moving each quartz wool 31 into the corresponding sample boat.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an active carbon adsorption pipe for flue gas mercury sampling which characterized in that: the tail end of the first glass tube (1) is communicated with the front end of the second glass tube (2) through a connecting rubber tube (4) and is detachably connected with the front end of the second glass tube, and the tail end of the second glass tube (2) is communicated with a sampling gun; the connecting rubber tube (4) is detachably sleeved at the tail end of the first glass tube (1) and the outer part of the front end of the second glass tube (2), and the front end of the first glass tube (1) and the tail end of the second glass tube (2) are blocked by detachable end sockets (5); the activated carbon is densely filled in the first glass tube (1) and the second glass tube (2) to form an activated carbon section (32), and quartz wool (31) are arranged at two ends of the activated carbon section (32).

2. The activated carbon adsorption tube for flue gas mercury sampling according to claim 1, characterized in that: and a gasket (42) is arranged in the connecting rubber tube (4), and the gasket (42) is arranged between the tail end surface of the first glass tube (1) and the front end surface of the second glass tube (2) in a cushioning manner.

3. The activated carbon adsorption tube for flue gas mercury sampling according to claim 1, characterized in that: therefore, the two ends of the connecting rubber tube (4) are respectively provided with an annular bayonet (41) which is positioned on the inner side wall of the connecting rubber tube, and the two bayonets (41) are respectively matched and clamped with an annular clamping block which is arranged on the outer side wall of the tail end of the first glass tube (1) and on the outer side wall of the front end of the second glass tube (2).

4. The activated carbon adsorption tube for flue gas mercury sampling according to claim 1, characterized in that: the quartz wool (31) is arranged at the tail end of the activated carbon section (32) in the first glass tube (1) and is flush with the tail end tube opening of the first glass tube (1), and the quartz wool (31) at the front end of the activated carbon section (32) is flush with the front end tube opening of the second glass tube (2) in the second glass tube (2).

5. The activated carbon adsorption tube for flue gas mercury sampling according to claim 1, characterized in that: the first glass tube (1) is of a straight tube structure, and the second glass tube (2) is of a tubular structure with the diameter of the tail end decreasing progressively.

6. The activated carbon adsorption tube for flue gas mercury sampling according to claim 5, characterized in that: the diameter of the pipe orifice at the tail end of the second glass pipe (2) is half of that of the pipe orifice at the front end of the second glass pipe.

7. The activated carbon adsorption tube for flue gas mercury sampling according to claim 1, characterized in that: the connecting rubber tube (4) is made of polytetrafluoroethylene.

8. The activated carbon adsorption tube for flue gas mercury sampling according to claim 1, characterized in that: the activated carbon is treated with potassium iodide.