Intrinsically safe type sample gas processing system

Abstract

The invention discloses an intrinsically safe type sample gas processing system. The sample gas processing system comprises a sample gas acquiring device and a sample gas processing device, wherein the sample gas acquiring device comprises a detachable sampling probe and a pneumatic sampling pump; the sample gas processing device comprises a water cooling dewatering device, a self-cleaning type sample gas filter and an infiltrated sample gas drier; and the detachable sampling probe, the water cooling dewatering device, the self-cleaning type sample gas filter, the infiltrated sample gas drier and the pneumatic sampling pump are connected in sequence. The sample gas processing system has the advantages of easy maintenance, simple structure, low cost, reasonable configuration, and good safety.

Description

technical field [0001] The invention relates to an intrinsically safe sample gas processing system suitable for sample gas processing of an online gas analysis system. Background technique [0002] On-line gas analysis systems widely used in the fields of energy saving, environmental protection, resources and new technology applications require the design and configuration of dedicated sample gas processing systems. Although the sample gas conditions and application conditions in various industrial fields are extremely complex and vary widely, there is no Exceptional requirements ensure application safety, requiring the sample gas to be processed into a "dust-free" and "water-free" good quality close to the standard gas. "Explosion-proof", "dust removal" and "water removal" are the three major technologies for sample gas treatment Difficulties and three technical commanding heights, the chemical and petrochemical industries have the most stringent explosion-proof requirement...

AI Technical Summary

Problems solved by technology

The traditional positive pressure or micro positive pressure sample gas treatment system almost always welds the sampling tube directly to the process pipeline to realize automatic sampling. It is impossible to timely maintain and eliminate the danger of sampling port blockage during production, and it is likely to be damaged during maintenance. Produce flammable, explosive, toxic gas leakage and cause new dangers

The traditional system uses an electronic sample gas condenser to condense the sample gas, and uses a peristaltic pump to discharge the condensate to achieve "water removal". If the pressure is too low, a suction pump is used to suck the sample gas. etc. must use 220V AC AC power supply. If it is to be applied to engineering sites with strict explosion-proof requirements such as chemical industry and petrochemical industry, it is necessary to increase the investment several times to select explosion-proof corresponding components and a huge explosion-proof analysis cabin. Professionalism is also very high

[0003] There are other obvious deficiencies in the traditional sample gas treatment system: the hydrophilic filter membrane of the post-stage membrane filter has low strength, and it will fail quickly after absorbing water and be easily damaged; although the electronic sample gas condenser is set as low as +2°C, the processing The final sample gas dew point will often be much higher than +2°C. In severe cases, open water will appear at the sample gas flowmeter and cannot operate normally, and endanger the safety of the online gas analyzer.

[0004] In short, although the current domestic sample gas processing system can reach a basic applicable level in engineering, its technical performance is far from a relatively perfect level, so the online analysis engineering community still believes that "the sample gas processing system technology is the core of the online analysis system." and key technologies” are its “difficulties and flash points”

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