High temperature and high pressure digestion system with quadruple safety protection

Abstract

The invention discloses a high temperature and high pressure digestion system with quadruple safety protection, and relates to the technical field of high temperature and high pressure digestion. A lower electromagnetic value and an upper electromagnetic value are connected with a colorimetric pool through a lower polytetrafluoro pipeline and an upper polytetrafluoro pipeline respectively, the two pipe ends of the lower polytetrafluoro pipeline are fixed to the lower electromagnetic valve and the lower end of the colorimetric pool through pipe joints respectively, the two pipe ends of the upper polytetrfluoro pipeline are fixed to the upper end of the colorimetric pool and the upper electromagnetic valve through pipe joints respectively, and the portions, where the pipe joints and the lower polytetrafluoro pipeline and the upper polytetrafluoro pipeline are connected, of the pipelines are each provided with a clamp hoop; the colorimetric pool is fixed to a colorimetric pool installation seat through a lower colorimetric pool installation block, the upper end of the colorimetric pool is provided with a colorimetric pool pressing block which is matched with a stainless steel pressing spring and a pressing screw, and the colorimetric pool is provided with a temperature collector. According to the system, high temperature and high pressure digestion testing is achieved, it is guaranteed that the colorimetric pool cannot explode due to high temperature, the safety is high, and the stability and the reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of high-temperature and high-pressure digestion, in particular to a high-temperature and high-pressure digestion system with four safety protections. Background technique [0002] High-temperature and high-pressure digestion is a method that can decompose insoluble substances. It can be used for pretreatment of dissolved samples in the analysis of atomic absorption spectroscopy, environmental detection, and plasma emission. It can also be used for small-dose synthesis reactions. And high temperature and high pressure airtight environment to achieve the purpose of rapid digestion of insoluble substances; colorimetry is a method of testing the content of substances by spectrophotometry, which is often used in the instrument detection of online monitoring. [0003] Since the reagents for digestion during the test are often concentrated acid or alkali, taking COD as an example during the digestion process, the m...

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Problems solved by technology

[0003] Since the reagents for digestion during the test are often concentrated acid or alkali, taking COD as an example during the digestion process, the mixed solution in the colorimetric cell is a mixed solution of 50% concentrated sulfuric acid, and the digestion temperature of COD is above 165°C. The pressure in the pool can reach 4.3 atmospheres. If the safety protection is not in place, once the temperature control fails, an explosion will occur, and because the reagent in the digestion is concentrated sulfuric acid with high temperature and high pressure, it will often cause irreparable damage to the instrument. loss, if the safety facilities are not in place, it may pose a threat to personal safety

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