Flue gas pretreatment device and method based on osmotic membrane and cold-dry method fusion technology

Abstract

The invention discloses a flue gas pretreatment device based on an osmotic membrane and a cold dry method fusion technology. The device comprises a bearing housing, a heating and heat preservation box, a filter, a permeation pipe, an exhaust pump, a condenser, a drainage peristaltic pump, a sampling pump, a rotor flow meter I, a rotor flow meter II, a flow guide branch pipe and a dew point measuring unit, wherein the filter and the permeation pipe are embedded in the heating and heat preservation box; the condenser, the sampling pump and the dew point measuring unit are all located in the bearing housing, the exhaust pump is connected with the outer surface of the heating and heat preservation box; and the drainage peristaltic pump, the rotor flow meter I, the rotor flow meter II and the flow guide branch pipe are all connected with the outer surface of the bearing housing. The detection method comprises two steps of equipment assembly, detection operation and the like. On one hand, the equipment structure is greatly simplified, the adjustment flexibility of the equipment structure is improved, and on the other hand, the precision of detection operation and the use stability of theequipment are greatly improved, the service life is greatly prolonged, and the use and maintenance cost is reduced.

Description

technical field [0001] The invention relates to a flue gas pretreatment device and method based on the fusion technology of a permeable membrane and a cold-dry method, belonging to the technical field of tail gas monitoring. Background technique [0002] The portable flue gas sampling and analysis system plays an important role in the monitoring and management of exhaust gas emissions from pollution sources. The portable flue gas sampling and analysis system usually includes a flue gas pretreatment device and a flue gas analysis device. Adjust and stabilize the flow rate, etc. After pretreatment, the flue gas is generally transmitted to the flue gas analysis device in the form of positive pressure for the determination of concentration and emission. The dehydration unit of the existing portable pretreatment device adopts two principles and methods: the condensation dehydration method and the osmotic membrane dehydration method. [0003] Condensation dehydration method is c...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned shortcomings, to provide a flue gas pretreatment device and design method based on the fusion technology of permeable membrane and cold-drying method, which overcomes the gas composition of flue gas samples caused by factors such as dust and condensed water in traditional detection equipment. Distortion, flue gas samples cause erosion damage to the detection equipment and other defects, thus greatly improving the accuracy of detection operations and stable use of equipment, and greatly extending the service life and reducing use and maintenance costs

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