Paraffin smell level identification device and method

Abstract

The invention discloses a paraffin smell level identification device, which comprises a paraffin smell information dynamic collecting device and au upper computer, and the paraffin smell information dynamic collecting device comprises a dynamic headspace sample feeding device and a smell collecting device test box body, and the dynamic headspace sample feeding device comprises a headspace diffusion device, and a gas intake pipe installed at the upper end of the headspace diffusion device; one side of the smell collecting device test box body is connected with the headspace diffusion device through an air pump; and the other side of the smell collecting device test box body is connected with an exhaust pipe through an exhaust pump. The smell collecting device test box body is provided witha sensor array. The sensor array is composed of 8 metal oxide gas sensitive sensors. The gas sensitive sensors send collected analog signals to a data acquisition card through a conditioning module, the data acquisition card transmits data to a PC by a serial port, and paraffin sample smell level grading can be completed by multiple modes of recognition combined platforms. The paraffin smell levelidentification device has the advantages of scientific and reasonable method, short process, convenient operation, fast recognition rate, high accuracy, and the like.

Description

technical field [0001] The invention relates to the field of industrial technology, in particular to a device and method for identifying the smell and taste grade of paraffin wax. Background technique [0002] Paraffin is a product of petroleum distillation, mainly composed of normal alkanes C n h 2n+2 composition. China is the world's largest paraffin resource, production, export and consumption country. Paraffin wax is mainly divided into food paraffin wax and industrial paraffin wax, and food paraffin wax is divided into food grade paraffin wax and food packaging paraffin wax. Due to the different uses of petroleum waxes of different qualities, the identification of the quality of petroleum waxes is very important. [0003] According to the refining degree of petroleum wax from low to high, paraffin wax can be divided into crude paraffin wax, semi-refined wax, fully refined wax and food-grade paraffin wax. When paraffin products leave the factory for quality inspecti...

AI Technical Summary

Problems solved by technology

[0009] (3) The grade evaluation standard is the average calculation of the scoring results of multiple evaluators to obtain the final result, but the difference between the evaluators on the same sample is large, which directly affects the accuracy of paraffin grade evaluation. At present, the error of artificial smell and taste evaluation The range is between 0.5 and 1.0, and the accuracy is not high;

[0010] (4) The evaluation results are all based on the senses, without a clear quantification mechanism, and it is difficult for evaluators from different manufacturers to maintain consistent evaluation results for the same sample

[0011] (5) Volatile toxic substances that may exist in paraffin impurities will bring risks to the health of personnel engaged in long-term evaluation work;

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