Anticorrosion high pressure reactor

Abstract

The invention relates to a high pressure reactor, specifically to an anticorrosion high pressure reactor. The anticorrosion high pressure reactor comprises an outer shell and an inner container. The inner container is arranged inside the outer shell and the inside of the inner container is a cavity for containing a sample. The anticorrosion high pressure reactor is characterized in that the inner container contains a top inner-container cover and a lower inner-container tank, wherein the top inner-container cover is sealed and plugged at the top of the lower inner-container tank, and axial cross section of the cavity formed by the top inner-container cover and the lower inner-container tank is oval. By the adoption of the high pressure reactor for digestion and under high pressure, the tank effectively realizes a self-sealing effect, an inner tongue depressor and an outer tongue depressor of the top cover are wedged into a taper of the lower tank so as to be sealed. The more pressure, the sealing effect is better. Thus, high-pressure acid leakage problem is solved thoroughly. The inside of the tank is designed in an oval or round shape, making steam form an effective convection and accelerating migration of steam. Thus, digestion efficiency and effect are raised. The anticorrosion high pressure reactor designed in the patent is simple, practical and effective, and achieves sealing effect and high efficiency of sample digestion.

Description

technical field [0001] The invention relates to a high-pressure reactor, in particular to an anti-corrosion high-pressure reactor. Background technique [0002] In recent years, with the development of test and analysis technology, especially the wide application of AAS, ICP-OES and ICP-MS, the rapid progress of sample digestion technology has been promoted. There are many digestion methods at present, and there are four digestion methods that are widely used: 1. Dissolving samples in an open PTFE crucible. This method uses a large amount of acid and a high blank, which is easy to cause external pollution; 2. Ordinary digestion tanks for airtight digestion , This method is mainly electric heating plate digestion, with uneven temperature and low pressure. In the digestion of biological samples and geological samples, the digestion is incomplete, which affects the precision and accuracy of the test; 3. Microwave digestion technology. This technology has developed particularly...

AI Technical Summary

Problems solved by technology

There are many digestion methods at present, and there are four digestion methods that are widely used: 1. Dissolving samples in the open PTFE crucible, this method uses a large amount of acid, and the blank is high, which is easy to bring external pollution; 2. Ordinary digestion tanks for airtight digestion , this method is mainly for electric heating plate digestion, the temperature is uneven, and the pressure is small. In the digestion of biological samples and geological samples, the digestion is incomplete, which affects the precision and accuracy of the test; 3. Microwave digestion technology

This technology is developing particularly rapidly, but its disadvantages are also obvious, such as complex and cumbersome operation, large amount of acid, and relatively complicated follow-up treatment

The digestion of biological samples and geological samples is unstable, and incomplete digestion often occurs

The safety is not high. It controls the temperature and pressure through temperature and pressure sensors. In actual operation, explosions often occur; 4. High-pressure reactor is a technology widely used in inorganic digestion in the last century. It has significant advantages. The biological samples and geological samples are completely digested, and the test data is accurate, but there are still some problems, such as the acid is easy to leak, due to the volatilization of the acid, the sample is not completely digested, the experiment fails, etc., and it will also cause corrosion to the stainless steel tank. There are some safety hazards and potential pollution

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