Combustion furnace for total organic carbon determination

Abstract

The present invention relates to the field of total organic carbon detection, and discloses a combustion furnace for total organic carbon determination. The combustion furnace comprises a barrier layer housing, a thermal insulation layer positioned inside the barrier layer housing, a heating apparatus inside the thermal insulation layer, a furnace core through hole and a heat conduction fan, wherein the barrier layer housing is positioned inside a sealed combustion furnace chamber, an air outlet is arranged above the side wall of the combustion furnace chamber, the heat conduction fan is arranged on the air outlet, the bottom of the combustion furnace chamber is provided with an air inlet, an air barrier layer for air flowing is formed between the thermal insulation layer and the barrier layer housing, the furnace core through hole penetrates through the barrier layer housing, the thermal insulation layer and the heating apparatus, a combustion pipe is arranged inside the furnace core through hole, both ends of the combustion pipe are respectively provided with an injection port and an air exhaust port, the side wall of the injection port is provided with a carrier gas inlet, and the injection port penetrates through the top wall of the combustion furnace chamber and is positioned outside the combustion furnace chamber. The combustion furnace has the following advantages that: an oxidation rate is high, continuous detection can be achieved, and a high temperature region inside the combustion furnace and an external environment can be separated.

Description

technical field [0001] The invention relates to the field of total organic carbon detection, in particular to a combustion furnace for total organic carbon measurement. Background technique [0002] Combustion oxidation-non-dispersive infrared absorption method is a more commonly used determination method of total organic carbon water quality analyzer for analyzing total organic carbon (TOC) in water. Using this method, only one conversion is required, the detection process is relatively simple, and the sensitivity is high. According to different principles of measuring TOC value, combustion oxidation-non-dispersive infrared absorption method can be divided into subtraction method and direct method. However, whether it is the subtraction method or the direct method, the water sample to be tested needs to be burned first to fully oxidize the carbon element in the water sample to be tested. In the combustion process, the combustion furnace is the core part of the TOC water q...

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Problems solved by technology

[0005] The present invention aims at the shortcomings of the existing combustion furnace that the external temperature is too high, the internal temperature of the combustion furnace cannot be precisely controlled, and the oxidation is incomplete, and provides a method that can isolate the internal high temperature area of ​​the combustion furnace from the external environment, and can monitor the internal temperature of the combustion furnace. Precisely controlled, new combustion furnace with higher oxidation rate

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