System for detecting activity of adsorbent

Abstract

The invention discloses a system for detecting the activity of an adsorbent and relates to the adsorbent. The system is provided with a stimulation fire coal flue gas phase mercury generation unit, a reaction unit, and a detection unit, wherein the stimulation fire coal flue gas phase mercury generation unit is provided with a N2 gas cylinder, a CO2 gas cylinder, a SO2 gas cylinder, an O2 gas cylinder, a NO2 gas cylinder, a HCl gas cylinder, a NO gas cylinder, a mass flow controller, an HgO permeability tube, an Hg<2+> permeability tube, and a constant temperature water bath kettle; the reaction unit is provided with a drying oven, a mixing preheater and an adsorption reactor; and the detection unit is provided with a gas-washing bottle with solution of SnCl2 and NaOH, a gas-washing bottle with solution of KCl and NaOH, an ice-bath condenser, and a mercury vapourmeter for continuously measuring the mercury-vapor content. The system can conveniently, quickly and stably generates a fullcomposition stimulation fire coal flue gas at certain gaseous mercury concentration, and can provide stable reaction temperature and monitor the total mercury or elemental mercury content in real time by matching with the mercury vapourmeter through a rotation valve.

Description

technical field [0001] The invention relates to an adsorbent, in particular to an activity detection system of the adsorbent used for researching the adsorption of the adsorbent to gas-phase mercury in coal-fired flue gas. Background technique [0002] On March 15, 2005, the EPA enacted the Clean Air Mercury Act. The bill stipulates that by 2018, the level of mercury emissions should be reduced by 70% based on 1999 levels. [0003] Sorbent injection technology is the most promising mercury removal technology for coal-fired power plant flue gas. This technology sprays the adsorbent into the flue gas flow between the air preheater and the dust removal equipment (electrostatic precipitator, bag filter, etc.), so that the adsorbent can complete the adsorption of mercury in the flue gas, and together with the fly ash Captured by subsequent dust removal equipment. Sorbent injection mercury removal technology has been successfully applied in several engineering cases, however, m...

AI Technical Summary

Problems solved by technology

However, most of the fixed-bed adsorption reaction systems used in literature reports only use N 2 or N 2 With a few other flue gas components, or the total mercury and elemental mercury content in the simulated flue gas at the outlet of the adsorption reactor cannot be detected at the same time, or only Hg is involved 0 , and the lack of Hg, which is an important form of mercury in coal-fired flue gas 2+ etc. ([4]Stuart JL. DEVELOPMENT OF AN EXPERIMENTAL SYSTEM TO STUDYMERCURY UPTAKE BY ACTIVATED CARBONS UNDER SIMULATED FLUE GASCONDITIONS. Pittsburgh: University of Pittsburgh; 2002; [5] Diamantopoulou I, Skodras G, Sakellaropoulos on ivmerated carpoulos by ivmerated carpoulos GP. Sorp in the presence of flue gas components. Fuel Processing Technology, 2010, 91(2): 158-163; [6] Lee J-Y, Ju Y, Lee S-S, et al. Novel Mercury Oxidant and Sorbent for Mercury Emissions from Control-fired Power Plants. Water, Air, & Soil Pollution: Focus, 2008, 8(3): 333-341)

Images