Gas detection device after tail gas recovery of rotary furnace and detection method thereof

Abstract

The invention relates to the technical field of tail gas detection, and discloses a gas detection device after tail gas recovery of a rotary furnace, the gas detection device comprises the rotary furnace, the rotary furnace is connected with a waste gas treatment structure through a gas guide pipe, one end of the waste gas treatment structure is also connected with a reaction chamber, and the reaction chamber is connected with a detector. The device comprises a rotary furnace, a reaction chamber is arranged at the gas outlet end of the rotary furnace, one end of the reaction chamber communicates with an ozone generation structure through a gas guide pipe, and a fan is connected to one end of the ozone generation structure. On one hand, large-particle impurities contained in the gas can be subjected to rotary centrifugal separation, and on the other hand, the contact area of the gas and the internal cooling liquid in the flowing process can be increased through the spiral structure by means of recyclable cooling liquid filled in the cooling and impurity removing structure, so that the cooling effect on the gas is greatly improved.

Description

technical field [0001] The invention relates to the technical field of tail gas detection, in particular to a gas detection device and a detection method thereof after the tail gas recovery of a rotary kiln. Background technique [0002] Rotary furnace is a thermal equipment for calcining, roasting or drying granular and powdery materials. Exhaust gas. The exhaust gas is mainly nitrogen oxides, especially the content of NO is very high. If NO is discharged without processing and testing to meet the qualified standards, it will cause serious harm to the environment. The existing detection of nitrogen oxides One way is to generate fluorescence by reacting NO with ozone, and then calculate the concentration of the gas by the fluorescence intensity, but there are still some problems in the use of the existing device: [0003] Existing waste gas does not have effective separation and removal of internal impurities during the process of being discharged from the rotary kiln, resu...

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Problems solved by technology

[0003] Existing waste gas does not have effective separation and removal of internal impurities in the process of discharging from the rotary kiln, resulting in waste gas reacting in the subsequent reaction chamber A large amount of calcination residue is brought in, so that the residue inside the reaction chamber will accumulate more and more, resulting in the inability of the reaction chamber to continue to be used normally, and the temperature of the gas directly discharged from the rotary kiln is very high, without effective cooling and retransmission It will make the transmission pipeline and the equipment in the middle be in a high temperature state for a long time, which will increase the loss speed of the equipment and reduce the service life of the equipment

[0004] When the corona discharge is performed on the air, the air is directly passed into it to generate ozone, and the water in the air will also react when it is ionized. During the reaction Impurities may be generated and affect the accuracy of the detection results of nitrogen oxide gases

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