CN210774924U

CN210774924U - Sulfuric acid mist extraction and sampling device

Info

Publication number: CN210774924U
Application number: CN201921851994.2U
Authority: CN
Inventors: 王�华; 刘清; 曹政
Original assignee: Baoding Runhe Environmental Protection Technology Co ltd
Current assignee: Baoding Runhe Environmental Protection Technology Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-06-16
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a sulfuric acid mist extraction sampling device, which comprises a sampling pipe, a sampling component and an air pump which are sequentially communicated, wherein the front end of the sampling pipe is provided with a filter cartridge component, the rear end of the sampling pipe is provided with a filter membrane component, and the rear end of the filter membrane component is communicated with a first sampling bottle through a connecting pipe; the cover is equipped with the outer pillar on the outer wall of sampling pipe, and the parcel has insulation material on the outer wall of outer pillar, and the outer pillar forms sealed intermediate layer with the outer wall of sampling pipe, is provided with the spiral water conservancy diversion piece in the sealed intermediate layer, is provided with import and export on the outer pillar, import and export all communicate with sealed intermediate layer, and the export communicates through first pipeline and aspiration pump. The utility model discloses the effectual high temperature flue gas that utilizes in the flue heats the sampling pipe, saves extra auxiliary heating, has reduced the cost of manufacture, has optimized the sampling pipe structure.

Description

Sulfuric acid mist extraction and sampling device

Technical Field

The utility model relates to an environmental monitoring technical equipment field especially relates to a sulfuric acid mist draws sampling device.

Background

In the sulfuric acid mist sampling process, need heat the sampling pipe, avoid because there is aqueous vapor absorption sampling sample in the pipeline, cause the sampling precision to reduce. The utility model discloses a utility model patent that application number is CN201821757420.4 discloses a sulphuric acid fog sampling device in waste gas, is equipped with electric heater unit in the intermediate layer between the outer wall of the device sampling pipe and the inner wall, and electric heater unit is connected with temperature control system, by temperature control system control sampling pipe and the heating temperature who strains a section of thick bamboo, this kind of design is complicated, fragile, needs provide extra temperature control system moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sulfuric acid mist draws sampling device solves this kind of mode design complicacy of electrical heating, fragile problem.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model relates to a sulfuric acid mist extraction sampling device, including sampling pipe, sampling subassembly and the aspiration pump that communicates in proper order, the sampling subassembly includes first sampling bottle, second sampling bottle, buffer flask, first sampling bottle and second sampling bottle are located the condensation tank, be provided with desicator, gas flowmeter and first valve on the intercommunication pipeline of buffer flask and aspiration pump; the front end of the sampling pipe is provided with a filter cartridge component, the rear end of the sampling pipe is provided with a filter membrane component, and the rear end of the filter membrane component is communicated with the first sampling bottle through a connecting pipe;

the cover is equipped with the outer pillar on the outer wall of sampling pipe, the parcel has insulation material on the outer wall of outer pillar, the outer pillar with the outer wall of sampling pipe forms sealed intermediate layer, be provided with the spiral water conservancy diversion piece in the sealed intermediate layer, be provided with import and export on the outer pillar, import and export all with sealed intermediate layer intercommunication, the export through first pipeline with the aspiration pump intercommunication, be provided with active carbon filter equipment and second valve on the first pipeline.

Furthermore, the filter cartridge assembly comprises a sampling nozzle, the sampling nozzle is connected with an elbow seat through an elbow, the elbow seat is connected to a filter cartridge shell through threads, a filter cartridge is arranged in the filter cartridge shell, and the rear end of the filter cartridge shell is in threaded connection with the front end of the sampling tube.

Further, the filter cartridge is a glass fiber filter cartridge.

Further, the filter membrane component comprises a filter membrane, the filter membrane is connected in a filter membrane shell through a filter membrane support, the front end of the filter membrane shell is communicated with the rear end of the sampling tube, and the rear end of the filter membrane shell is communicated with the first sampling bottle through a pipeline.

Furthermore, the filter membrane is a tetrafluoroethylene filter membrane.

Compared with the prior art, the utility model discloses a beneficial technological effect:

the utility model discloses the effectual high temperature flue gas that utilizes in the flue heats the sampling pipe, saves extra auxiliary heating, has reduced the cost of manufacture, has optimized the sampling pipe structure.

Drawings

The present invention will be further explained with reference to the following description of the drawings.

FIG. 1 is a schematic structural view of the sulfuric acid mist extraction and sampling device of the present invention;

FIG. 2 is a schematic view of the construction of the filter cartridge assembly of the present invention;

FIG. 3 is a schematic structural view of the membrane module of the present invention;

FIG. 4 is a schematic view showing the connection structure of the filter membrane and the filter membrane holder.

Description of reference numerals: 1. a sampling tube; 101. an outer protecting pipe; 102. sealing the interlayer; 103. an inlet; 104. an outlet; 105. a first conduit; 106. an activated carbon filtration device; 107. a second valve; 2. a sampling component; 201. a first sampling bottle; 202. a second sampling bottle; 203. a buffer bottle; 204. a condensation tank; 3. an air pump; 4. a dryer; 5. a gas flow meter; 6. a first valve; 7. a filter cartridge assembly; 701. a sampling nozzle; 702. bending the pipe; 703. a bent pipe seat; 704. a cartridge housing; 705. a filter cartridge; 8. a filter membrane assembly; 801. filtering the membrane; 802. a filter membrane support; 803. and (4) a filter membrane shell.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the embodiment discloses a sulfuric acid mist extraction sampling device, including sampling pipe 1, sampling subassembly 2 and aspiration pump 3 that communicate in proper order, sampling subassembly 2 includes first sampling bottle 201, second sampling bottle 202, buffer bottle 203, and first sampling bottle 201, second sampling bottle 202 and buffer bottle 203 communicate in proper order through the pipeline, in order to make detailed technical description to specific mode of communication among the prior art, and technical personnel in the field can implement according to prior art, and the description is no longer repeated here. A first sample bottle 201 and a second sample bottle 202 are located in a condensate sump 204.

The first sampling bottle 201 and the second sampling bottle 202 are filled with sodium hydroxide solution, and the condensation pool 204 is filled with ice water for reducing the temperature of the chemical reaction in the first sampling bottle 201 and the second sampling bottle 202. Buffer bottle 203 is made by borosilicate glass material for collect steam and the droplet that solution absorbed the back and produce, simultaneously, be provided with desicator 4 on buffer bottle 203 and the communicating pipe of aspiration pump 3, desicator 4 is equipped with the drier and is arranged in absorbing remaining steam in the waste gas and prevents that the absorption liquid from getting into aspiration pump 3 and causing the damage because the air current strikes. In order to control and monitor the sampling pipeline, a gas flow meter 5 and a first valve 6 are further provided on a communication pipeline between the buffer bottle 203 and the air pump 3.

In the process of waste gas sampling, the front end of the sampling pipe 1 extends into the flue, in order to fully utilize the heat in the flue, an outer protecting pipe 101 is sleeved on the outer wall of the sampling pipe 1, the outer protecting pipe 101 and the outer wall of the sampling pipe 1 form a sealing interlayer 102, an inlet 103 and an outlet 104 are arranged on the outer protecting pipe 101, the inlet 103 and the outlet 104 are communicated with the sealing interlayer 102, the inlet 103 is located in the flue and used for sucking hot gas, and the outlet 104 is communicated with the air suction pump 3 through a first pipeline 105. In this embodiment, the sampling tube 1 and the outer sheath 101 are both made of stainless steel.

In order to protect the suction pump 3 from foreign particles damaging the suction pump 3, an activated carbon filter device 106 is provided on the first pipe 105, and a second valve 107 is also provided on the first pipe 105 for individually controlling the first pipe 105. In order to strengthen the heat insulation performance of the outer protective pipe 101, the outer wall of the outer protective pipe is wrapped with a heat insulation material. In order to increase the circulation speed of the flue gas and improve the heat exchange efficiency, a spiral flow deflector is arranged in the sealing interlayer 102.

The front end of the sampling pipe 1 is provided with a filter cartridge component 7, the rear end of the sampling pipe 1 is provided with a filter membrane component 8, and the rear end of the filter membrane component 8 is communicated with a first sampling bottle 201 through a connecting pipe. The filter cartridge module 7 and the filter membrane module 8 are used to collect samples of particulate in the tissue discharge.

As shown in fig. 2, the filter cartridge assembly 7 includes a sampling nozzle 701, the sampling nozzle 701 is connected to an elbow base 703 through an elbow 702, and two ends of the elbow 702 are respectively connected to the sampling nozzle 701 and the elbow base 703 by welding. Elbow base 703 is threaded into cartridge housing 704 and cartridge 705 can be replaced within cartridge housing 704 by removing cartridge housing 704. The rear end of cartridge housing 704 is threadably connected to the front end of sampling tube 1. In this embodiment, the filter cartridge 705 is a glass fiber filter cartridge.

As shown in fig. 3 and 4, the filter membrane assembly 8 includes a filter membrane 801, the filter membrane 801 is connected in the filter membrane housing 803 through a filter membrane holder 802, in this embodiment, the filter membrane holder 802 is made of a plastic material and has a certain elasticity, the filter membrane 801 is wrapped on the filter membrane holder 802, the filter membrane holder 802 and the filter membrane housing 803 are integrally placed in the filter membrane housing 803, the filter membrane 801 is fixed by the inner wall of the filter membrane housing 803 and the inner wall of the filter membrane housing 803 in a squeezing manner, the front end of the filter membrane housing 803 is communicated with the rear end of the sampling tube 1, and the rear end of the filter membrane housing 803 is communicated with the first. In this example, a tetrafluoroethylene filter membrane was used as the filter membrane 801.

The utility model discloses a sampling process as follows:

firstly, the filter cartridge 705 and the filter membrane 801 can filter soluble sulfate in particles in the exhaust gas, and the soluble sulfate in the particles on the filter cartridge 705 and the filter membrane 801 is extracted by using an ultrasonic extraction method or a heating extraction method, and then filtration and volume fixing treatment are carried out. Then, the absorption liquid in the first sampling bottle 201 and the second sampling bottle 202 is taken out, and filtration and volume fixing treatment are performed.

And analyzing and measuring the sample subjected to the two constant volume treatments by using an ion chromatography or a spectrophotometry, wherein all detection results are the measurement results of the sulfuric acid mist.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a sulfuric acid mist draws sampling device, includes sampling pipe (1), sampling subassembly (2) and aspiration pump (3) that communicate in proper order, sampling subassembly (2) include first sampling bottle (201), second sampling bottle (202), buffer bottle (203), first sampling bottle (201) and second sampling bottle (202) are located condensation tank (204), be provided with desicator (4), gas flowmeter (5) and first valve (6) on the intercommunication pipeline of buffer bottle (203) and aspiration pump (3), its characterized in that: a filter cartridge component (7) is arranged at the front end of the sampling pipe (1), a filter membrane component (8) is arranged at the rear end of the sampling pipe (1), and the rear end of the filter membrane component (8) is communicated with the first sampling bottle (201) through a connecting pipe;

the utility model discloses a sampling device, including sampling pipe (1), outer pillar (101) and outer wall, the parcel has insulation material on the outer wall of sampling pipe (1), outer pillar (101) with the outer wall of sampling pipe (1) forms sealed intermediate layer (102), be provided with the spiral water conservancy diversion piece in sealed intermediate layer (102), be provided with import (103) and export (104) on outer pillar (101), import (103) and export (104) all with sealed intermediate layer (102) intercommunication, export (104) through first pipeline (105) with aspiration pump (3) intercommunication, be provided with active carbon filter equipment (106) and second valve (107) on first pipeline (105).

2. The sulfuric acid mist extraction sampling device of claim 1, characterized in that: the sulfuric acid mist extraction sampling device of claim 1, characterized in that: the filter cartridge assembly (7) comprises a sampling nozzle (701), the sampling nozzle (701) is connected with an elbow pipe seat (703) through an elbow pipe (702), the elbow pipe seat (703) is connected to a filter cartridge shell (704) through threads, a filter cartridge (705) is arranged in the filter cartridge shell (704), and the rear end of the filter cartridge shell (704) is in threaded connection with the front end of the sampling pipe (1).

3. The sulfuric acid mist extraction sampling device of claim 2, characterized in that: the filter cartridge (705) is a glass fiber filter cartridge.

4. The sulfuric acid mist extraction sampling device of claim 1, characterized in that: the filter membrane assembly (8) comprises a filter membrane (801), the filter membrane (801) is connected in a filter membrane shell (803) through a filter membrane bracket (802), the front end of the filter membrane shell (803) is communicated with the rear end of the sampling tube (1), and the rear end of the filter membrane shell (803) is communicated with the first sampling bottle (201) through a pipeline.

5. The sulfuric acid mist extraction sampling device of claim 4, characterized in that: the filter membrane (801) adopts a tetrafluoroethylene filter membrane.