Sampling system for atmospheric pollutants discharged by civil cooking range

A technology for air pollutants and sampling systems, which is applied in the field of air pollutants sampling systems for civilian stove emissions, can solve problems such as difficulty in determining the amount of smoke emissions and pollutant emissions, unstable smoke emission rates, and large fluctuations in working conditions

Active Publication Date: 2015-04-08
BEIHANG UNIV
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Problems solved by technology

[0003] Civilian stoves are small-scale combustion sources. The smoke emission rate of this type of combustion source is unstable and extremely small. Some small-scale combustion sources have no flue or chimney, so it is difficult to quantitatively measure the emission of pollutants by using the commonly used test methods for fixed combustion sources. The main performance In the following aspects: 1. For a stove without a chimney

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  • Sampling system for atmospheric pollutants discharged by civil cooking range

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Embodiment Construction

[0029] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0030] The present invention is a sampling system for atmospheric pollutants discharged from civil stoves, such as figure 1 As shown, it includes a flue gas collection part 1, a dilution air part 2, an exhaust part 3, and a measurement and sampling part 4.

[0031] The smoke collection part 1 includes a smoke collection cover 101 , a lock nut 102 , a screw rod 103 , a metal hose 104 and an experiment chamber 105 .

[0032] The collection cover 101 adopts a square truss structure, and the lower opening end is large, measuring 1x1m 2 The sides of the lower open end are provided with skirt reinforcements, and four holes are provided on the skirts, which are respectively inserted into four vertically placed screw rods 103 and fixed on the screw rods 103 by lock nuts 102; the upper part of the catch cover 101 The gas outlet is connected to the inlet end ...

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Abstract

The invention discloses a sampling system for atmospheric pollutants discharged by a civil cooking range. The sampling system comprises a smoke capturing part, a diluted air part, an exhausting part and a measuring and sampling part. All smoke discharged by the cooking range is captured by a hood and is diluted by clean air, the smoke temperature and the pollutant concentration are reduced, the flow of the diluted gas is kept stable, the gas rate is in a measurable range, and the atmospheric pollutants are collected by using an atmospheric environmental sampling method. The sampling system disclosed by the invention has the advantages that the sampling system is suitable for discharging measurement of different cooking range structures, is not subjected to the influence of concentration of external background atmosphere, and is reliable in measuring result.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, and relates to a sampling system for air pollutants discharged from civil stoves. Background technique [0002] my country's rural domestic energy is still dominated by biomass fuels such as straw and fuelwood; in recent years, my country's rural households directly burn 300 million tons of straw and 150 million tons of fuelwood each year for cooking and heating, equivalent to 204 million tons of standard coal; Biomass fuels are primarily burned in conventional biomass stoves. In addition, the burning of raw coal is the main method of cooking and heating for households in small and medium-sized towns, rural areas, and non-centralized heating areas in my country; conduct. The above civil stoves burning biomass or coal have a simple structure, and the mixture of fuel and air is basically a natural mixture during combustion, and the mixing effect is not good; at the same time, due t...

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Application Information

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IPC IPC(8): G01N1/22G01N1/38
Inventor 李兴华曹阳韩军赞
Owner BEIHANG UNIV
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