Desulfurization catalysts efficacy detecting method

Abstract

The invention discloses a desulfurization catalysts efficacy detecting method. The desulfurization catalysts efficacy detecting method comprises the following steps of, firstly, preparing agents and instruments required by sample detection, preparing two desulfurization solutions of a blank desulfurization solution and a catalyst desulfurization solution; secondly, performing desulfurization solution standard coal gas desulfurization detection, inletting standard coal gas containing nominal value into an absorption flask containing the blank desulfurization solution and two absorption flasks containing the catalyst desulfurization solution, after one of the flasks containing the catalyst desulfurization solution completes sampling, at a uniform speed inletting air to obtain a catalyst desulfurization regenerated solution, leaving the other flask containing the catalyst desulfurization solution unprocessed for standby application; thirdly, detecting and calculating parameters representing the efficacy of desulfurization catalysts; fourthly, assessing the efficacy of the catalysts according to a catalyst assessment system. The desulfurization catalysts efficacy detecting method can relatively objectively and truthfully reflect the quality of the desulfurization catalysts, facilitate effectively product quality control by manufactures as well as acceptance and application by usingunits and accordingly lay a foundation for stable and smooth production.

Description

technical field [0001] The invention relates to the field of detection and analysis, in particular to a method for detecting the efficiency of a desulfurization catalyst. Background technique [0002] The gas purification system plays a vital role in the recovery and purification of by-products in the coking plant gas, H 2 S and HCN are substances with high content in raw coal gas, H 2 The S content generally reaches 6-8g / m 3 , the H in the gas 2 S and HCN are harmful impurities, which seriously corrode chemical production recovery equipment and gas storage and transportation equipment, and seriously pollute the environment. 2 Gas steelmaking with high S and HCN will reduce the quality of steel, and use it as city gas to pollute the environment and be poisonous and easy to cause personal injury, especially H 2 SO produced by combustion of S and HCN 2 And nitrogen oxides are highly toxic and seriously pollute the environment. Therefore, the H in the gas 2 S and HCN must...

AI Technical Summary

Problems solved by technology

The main manifestations are as follows: First, the quality measurement index is not strong in characterizing the quality of the catalyst PDS, and cannot accurately and effectively measure the quality of the product. Balanced, with many influencing factors, the weight of the catalyst on its influencing factors is sometimes difficult to achieve a decisive role, and the rationality of the design of the indicators is questionable

The second is that there are many factors affecting the accuracy and objectivity of the test process, and no standardized operation process has been formed. The main influencing factor is that the displacement of the liquid in the glass tube with hydrogen sulfide gas is difficult to measure accurately, and the core parameter of its index measurement is the displacement value. , so the error generated in the detection process is relatively large, and the repeatability of the same batch of products varies greatly

The third is that there is no special instrument for the detection device, and there are great differences in the installation of instruments in different laboratories during the detection process, especially the connection between the three-necked bottle and the graduated glass tube and the connection between the three-necked bottle and the oscillator have an important impact on the test results

Fourth, the indicators that characterize the quality of PDS are single and extensive, which cannot objectively and scientifically evaluate the quality of PDS, and it is even more difficult to judge the effect in actual production and application

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