Online circulating hydrogen analysis detector

Abstract

The invention discloses an online circulating hydrogen analysis detector, which comprises a detector, a sampling port formed in a process pipeline, a sampling channel communicated with the sampling port, a control valve arranged on the sampling channel, a hydrocarbon remover, a purifier and an analysis membrane communicated with the hydrocarbon remover, wherein the hydrocarbon remover and the purifier are respectively communicated with the sampling channel and are arranged in parallel, the analysis membrane is communicated with the gas inlet pipeline of the detector, the purifier is communicated with a switching valve, the switching valve is connected with a hydrogen generator, a calibration gas inlet pipeline, a first reference gas pipeline, a second reference gas pipeline and a tail gasblowing pipeline, the tail gas blowing pipeline is communicated with the gas inlet pipeline of the detector, and the detector is provided with a first reference gas inlet communicated with the first reference gas pipeline and a second reference gas inlet communicated with the second reference gas pipeline. The online circulating hydrogen analysis detector is strong in functionality and high in sensitivity.

Description

technical field [0001] The invention relates to an online circulating hydrogen analysis detector. Background technique [0002] Many coal chemical and petrochemical enterprises have built hydrogenation production units. The main process of the hydrogenation unit is: use excess hydrogen and materials to generate hydrogenated substances in the reactor. After the reaction, the unreacted hydrogen is separated, and then returned to the reactor together with new hydrogen for hydrogenation reaction. In this kind of production process operation, it is necessary to control the concentration of hydrogen and hydrogen sulfide to achieve the best reaction conditions, and this process is dynamically changing. Therefore, it is necessary to continuously detect the concentration of hydrogen and hydrogen sulfide, and dynamically adjust the amount of new hydrogen added in real time to achieve the purpose of stabilizing the process and obtaining qualified hydrogenated products. [0003] At p...

AI Technical Summary

Problems solved by technology

The biggest problem is that the cycle of manual sampling and analysis is long, and the intermittent operation cannot satisfy the dynamic adjustment process operation; the second is manual sampling at the device site, and the concentration of hydrogen sulfide (permitted concentration in highly toxic air is 8ppm) in the sampling port and circulating hydrogen is relatively high ( 10~20%) leakage will cause poisoning and personal injury accidents

Poisoning and personal injury accidents also occur during the analysis process

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