Pretreatment device for carbon dioxide emission monitoring

Abstract

The utility model relates to the technical field of greenhouse gas monitoring, in particular to a pretreatment device for monitoring carbon dioxide emission, which comprises a sampling pitot tube, a gas analyzer, an electric heater, a water distribution filter, a variable-frequency condenser, a sucking pump, a standard gas circuit, a precision filter group, an electronic flowmeter and a tar filter, the electric heater, the water distribution filter, the variable-frequency condenser, the sucking pump, the precision filter group, the standard gas circuit, the electronic flowmeter, the tar filter and the gas analyzer are sequentially mounted on the sampling pitot tube, a sampling ball valve and a temperature-pressure-flow sensor are mounted between the electric heater and the water distribution filter, and a temperature sensor is mounted at the output end of the variable-frequency condenser; and the precise filter group adopts two precise filters with different filtering finenesses. By arranging the temperature and humidity sensor, the flow meter and the precision filter, the standard condition of sample gas entering the gas analyzer is strictly controlled, so that the accuracy of a monitoring result is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to greenhouse gas monitoring technical field, concretely is a kind of pretreatment device for carbon dioxide emission monitoring. BACKGROUND

[0002] Climate change is one of the biggest challenges facing mankind, actively responding to climate change, accelerate the use of clean energy and low-carbon development, has become the universal consensus of the international community. As a basic raw material industry, cement industry is one of the main sources of global carbon emissions. Most of the greenhouse gases emitted by the cement industry are trace gases such as carbon dioxide, and their concentration and distribution are relatively dispersed. At the same time, the process involved in the production process is complex, and the emission factor is complex and variable, which makes it difficult to monitor carbon dioxide.

[0003] At present, the carbon emission estimation of cement industry is generally using material accounting method. The main disadvantage of material accounting is large measurement error, difficult to cope with when emission system changes and easy to fake. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, a pretreatment device for carbon dioxide emission monitoring is provided, which can realize online monitoring of carbon dioxide emission.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A pretreatment device for carbon dioxide emission monitoring, comprising a sampling pitot tube and a gas analyzer, further comprising an electric heater, a water separation filter, a variable frequency condenser, a gas pump, a standard gas gas path, a precision filter group, an electronic flowmeter and a tar filter, the electric heater, the water separation filter, the variable frequency condenser, the gas pump, the precision filter group, the standard gas gas path, the electronic flowmeter, the tar filter and the gas analyzer are installed on the sampling pitot tube in sequence, and a sampling ball valve and a temperature and pressure flow sensor are installed between the electric heater and the water separation filter, and a temperature sensor is installed at the output end of the variable frequency condenser.

[0007] Further, the electric heater is installed at the gas inlet end of the sampling pitot tube, and the internal load heating temperature control circuit is used to heat the sample gas according to different requirements.

[0008] Further, the water separation filter and the input end of the variable frequency condenser are connected through a peristaltic pump, the gas pump is installed at the output end of the variable frequency condenser, and the gas pump is connected in parallel with a needle valve.

[0009] Further, the two precision filters with different filter fineness are connected in parallel, which are 0.5 μm precision filter and 0.1 μm precision filter respectively.

[0010] Further, the two precision filters with different filtering fineness are connected with standard electromagnetic valves and electronic flow meters respectively.

[0011] Further, a humidity sensor is installed between the tar filter and the electronic flow meter, and the output end of the tar filter is connected with the gas input end of the gas analyzer.

[0012] Further, the standard gas path is connected with a sampling pitot tube through a manual three-way valve, and a standard gas electromagnetic valve is arranged between the standard gas path and the manual three-way valve.

[0013] The utility model has the following characteristics and beneficial effects:

[0014] The utility model discloses a temperature and humidity sensor, flowmeter, precision filter are set up, and the sample gas standard condition of entering the gas analyzer is strictly controlled, and further, the accuracy of monitoring result is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of non-restrictive embodiments with reference to the accompanying drawings:

[0016] Figure 1 It is a structure schematic view of a pretreatment device for carbon dioxide emission monitoring. DETAILED DESCRIPTION

[0017] The utility model will be explained in detail in combination with specific embodiment. The following embodiments will help the person skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be explained that the embodiment in the utility model and the features in the embodiment can be combined mutually in the case of not conflicting.

[0018] As Figure 1As shown, the utility model embodiment's a kind of for carbon dioxide emission monitoring's pretreatment device, including sampling pitot tube and sequentially installed on sampling pitot tube electric heater, sampling ball valve, temperature and pressure flow sensor, water separation filter, frequency conversion condenser, temperature sensor, air pump, standard gas gas path, precision filter group, electronic flowmeter, tar filter and gas analyzer, wherein, the electric heater is installed in the air inlet end of sampling pitot tube, and heating temperature control circuit is used to realize the heating of sample gas according to different requirements.The sampling ball valve and temperature and pressure flow sensor are sequentially installed between electric heater and water separation filter, and the former is used to realize the sampling detection of gas, and the latter is used to realize the detection of temperature and pressure flow parameter in sampling pitot tube.The precision filter group uses two precision filters of different filtering fineness, provides two filtering concentrations, when sampling detection is detected that carbon monoxide concentration is too high by sampling ball valve, can be switched to fine particle filtration.The tar filter is used to filter oily particles in gas, and is installed between electronic flowmeter and gas analyzer.

[0019] In the embodiment, the water separation filter is used to filter moisture generated in the pipeline, which is connected between the input end of the frequency conversion condenser through a peristaltic pump.

[0020] In the embodiment, the frequency conversion condenser is used to be combined with the temperature and pressure flow sensor at the front end and the temperature sensor at the rear end, to control the frequency conversion condenser through temperature difference, to dynamically adapt to the change of gas temperature, and to quickly remove water.

[0021] In the embodiment, the air pump is installed at the output end of the frequency conversion condenser, and a needle valve is installed in parallel with the air pump, and the output end of the air pump is connected with the standard gas gas path through a manual three-way valve.

[0022] In the embodiment, the two precision filters are connected in parallel, which are 0.5 μm precision filter and 0.1 μm precision filter, and the two precision filters are connected with the electronic flowmeter through standard electromagnetic valves respectively, the electronic flow valve is used to provide the instrument as flow calculation, and is also used as the basis for judging whether the precision filter needs to be replaced.

[0023] In the embodiment, a humidity sensor is installed between the tar filter and the electronic flowmeter, to detect the humidity of the gas entering the gas analyzer.

[0024] The utility model can carry self-determination measurement component / detection probe in gas analyzer, to improve from periodic maintenance to on-demand maintenance, to reduce maintenance cost and improve maintainability.

[0025] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pre-processing device for carbon dioxide emission monitoring comprising a sampling pitot tube and a gas analyser characterised in that: The electric heater, the water separation filter, the frequency conversion condenser, the air pump, the standard gas gas path, the precision filter group, the electronic flow meter and the tar filter are sequentially installed on the sampling pitot tube, and the sampling ball valve and the temperature and pressure flow sensor are installed between the electric heater and the water separation filter, the temperature sensor is installed at the output end of the frequency conversion condenser; the precision filter group adopts two precision filters with different filtering fineness.

2. A pre-processing device for carbon dioxide exhalation monitoring as claimed in claim 1, characterized in that: The electric heater is installed at the gas inlet end of the sampling pitot tube, and the internal heating temperature control circuit is used for realizing the heating of the sampling gas according to different requirements.

3. A pre-processing device for carbon dioxide exhalation monitoring as claimed in claim 1, characterized in that: The water separation filter is connected with the input end of the frequency conversion condenser through the peristaltic pump, the air pump is installed at the output end of the frequency conversion condenser, and the needle valve is installed in parallel with the air pump.

4. A pre-processing device for carbon dioxide exhalation monitoring as claimed in claim 1, characterized in that: The two precision filters with different filtering fineness are installed in parallel, and are respectively 0.5 mu m precision filter and 0.1 mu m precision filter.

5. A pre-processing device for carbon dioxide exhalation monitoring as claimed in claim 1, characterized in that: The two precision filters with different filtering fineness are connected with the electronic flow meter through the standard electromagnetic valve respectively.

6. A pre-processing device for carbon dioxide exhalation monitoring as claimed in claim 1, characterized in that: The humidity sensor is installed between the tar filter and the electronic flow meter, and the output end of the tar filter is connected with the gas input end of the gas analyzer.

7. A pre-processing device for carbon dioxide exhalation monitoring as claimed in claim 1, characterized in that: The standard gas gas path is connected with the sampling pitot tube through the manual three-way valve, and the standard gas electromagnetic valve is arranged between the standard gas gas path and the manual three-way valve.

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