Fluorine concentration measurement device and method and method of measuring adsorption efficiency of adsorbent

Abstract

The invention belongs to the fields of environmental protection and chemical technologies and particularly relates to a fluorine concentration measurement device and method and a method of measuring the adsorption efficiency of an adsorbent. The device comprises a gas filter, a calcium chloride dryer, a gas booster pump, a gas mass flowmeter and a multi-order measurement unit, all of which are sequentially connected; the multi-order measurement unit comprises at least three orders of measurement units connected in series; and each order of measurement unit comprises a gas inlet pipe, a gas outlet pipe, an absorption bottle, a magnetic stirrer, an automatic potentiometric titrator and a fluorine ion selection electrode pair, wherein the gas inlet pipe and the gas outlet pipe are inserted into the absorption bottle, one end of the fluorine ion selection electrode pair is inserted into the absorption bottle, the other end of the fluorine ion selection electrode pair is connected with theautomatic potentiometric titrator through a connecting line, the bottom end of the absorption bottle is connected with the magnetic stirrer, and the absorption bottle contains a buffer solution. Through the device, the accuracy of determination of the fluorine concentration in a fluorine-contained gas is improved, and the cost of consumables and determination equipment is lowered.

Description

technical field [0001] The invention belongs to the technical fields of environmental protection and chemical industry, and in particular relates to a fluorine concentration measuring device, a measuring method, and a method for measuring the adsorption efficiency of an adsorbent. Background technique [0002] Industrial fluorine-containing waste gas, such as hydrogen fluoride, is a toxic gas pollutant and is listed as one of the gaseous pollutants under national key monitoring. If a person lives and works in a polluted area with high concentration of fluorine-containing gas for a long time, excessive intake of fluorine-containing substances will cause osteosclerosis, hyperosteogeny, bronchitis, etc., cause fluorosis and other diseases, and seriously endanger the human body healthy. Excessive absorption of fluorine by plants will affect the growth of crops, resulting in serious consequences such as plant yield reduction and even death. The fluorine-containing gas in the at...

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Problems solved by technology

But in fact, the adsorption efficiency of the adsorbent sample to hydrogen fluoride gradually decreases with time, and cannot be maintained at 100% all the time.

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