Method for real-time analysis of oxygen content in coking coal gas

Abstract

The invention discloses a method for real-time analysis of oxygen content in a coking coal gas. The method comprises the following steps of (1) extracting the coal gas in real time at a spot; (2) performing pretreatment on the coal gas; (3) testing the coal gas and analyzing the oxygen content in thecoking coal gas; and (4) recycling the coal gas after test for use. The method can perform pretreatment on the coal gas before testing, so that impurities and moisture in the coal gas can be removed; testing precision of the oxygen content can be increased; service life of the testing equipment can be increased; and at the same time, the coal gas after test can be recycled for use; thereby preventing pollutions toward the environment caused by directly discharging of the coal gas after test. Therefore, the method is suitable for popularization and application.

Description

technical field [0001] The invention relates to a method for analyzing the oxygen content, in particular to a method for analyzing the oxygen content of coke oven gas in real time. Background technique [0002] Coke oven gas is a mixed combustible gas mainly composed of hydrogen and methane. When producing coke oven gas in a coking plant, it is necessary to detect the oxygen content in coke oven gas. At present, sensors are usually installed on the coke oven gas pipeline to test the oxygen content in the gas, or the gas is extracted from the coke oven gas pipeline and then tested. However, the two currently used methods for detecting the oxygen content in gas do not pre-treat the gas and directly detect it, and impurities such as tar, benzene, naphthalene, and water contained in the gas will crystallize when mixed. Phenomenon, and then directly affect the test results of oxygen content, resulting in a large error in the test results of oxygen content, so that the accuracy o...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the method currently used for testing the oxygen content in coke oven gas to directly detect the gas, so that the impurities and moisture contained in the gas affect the accuracy of the oxygen content test results, resulting in large errors in the test results, and at the same time It is easy to damage the defect of the test equipment. It provides a method that can pretreat the gas before the test, so as to remove impurities and moisture in the gas, thereby improving the accuracy of the oxygen content test, and improving the service life of the test equipment. At the same time, it can also test The method of real-time analysis of the oxygen content of coke oven gas can prevent the direct discharge of the tested gas and pollute the environment.