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Apr 01, 2008· Laboratory studies were conducted to develop an elemental mercury (Hg 0) removal process based on the reaction of H 2 S and Hg 0 using iron-based sorbents for coal derived fuel gas. It is well known that hydrogen chloride (HCl) is present in fuel gases derived from some types of coal, but the effect of HCl on the Hg 0 removal performance of iron-based sorbents in coal derived fuel gas is .
Jun 22, 2020· Due to the restriction such as the Minamata Convention as well as the IED of the European Commission, mercury removal from flue gases of coal-fired power plants (CPP) is an increasingly important environmental issue. This makes this topic very crucial for both the energy industry and scientists. This paper shows how mercury arises from natural resources, i.e., coals, through their .
Over the past few years, laboratory and pilot-scale studies have been conducted to investigate the use of solid sorbents for the removal of mercury from coal-fired, utility flue gas streams. Many factors affect the performance of these sorbents including flue gas conditions, mercury type, and utility operating conditions and configuration.
Development of waste-derived sorbents from biomass and brominated flame retarded plastic for elemental mercury removal from coal-fired flue gas. Chemical Engineering Journal 2018, 350, 911-919. DOI: 10.1016/j.cej.2018.06.055.
For the past 3 years, ADA Technologies, Inc. (ADA), has been developing and testing a new class of mercury control sorbents called Amended Silicates™, with the overall goal of commercializing these sorbent materials for removal of vapor-phase mercury from coal-fired flue gas streams.
Jan 01, 2005· Evaluation of Nanocrystalline Sorbents for Mercury Removal from Coal Gasifier Fuel Gas Raja A. Jadhav* 1, Howard S. Meyer 1, Slawomir Winecki 2, and Ronald W. Breault 3
Evaluation of Nanocrystalline Sorbents for Mercury Removal from Coal Gasifier Fuel Gas Raja A. Jadhav*1, Howard S. Meyer1, Slawomir Winecki2, and Ronald W. Breault3 1Gas Technology Institute, 1700 S. Mount Prospect Road, Des Plaines, IL 60018 Tel: (847) 768-0807, E-mail: raja.jadhav@gastechnology
Mar 30, 2009· The mercury (Hg0) removal process for coal-derived fuel gas in the integrated gasification combined cycle (IGCC) process will be one of the important issues for the development of a clean and highly efficient coal power generation system. Recently, iron-based sorbents, such as iron oxide (Fe2O3), supported iron oxides on TiO2, and iron sulfides, were proposed as active mercury sorbents.
Impregnated Clay Sorbents for Mercury Removal From Flue Gas EPA Contract Number: 68D03011 Title: Impregnated Clay Sorbents for Mercury Removal From Flue Gas Investigators: Lovell, John S. Small Business: ADA Technologies Inc. EPA Contact: Richards, April Phase: I Project Period: April 1, 2003 through September 1, 2003 Project Amount: $69,984
A novel laboratory-scale fixed-bed reactor has been developed to investigate trace metal capture on selected sorbents for cleaning the hot raw gas in Integrated Gasification Combined Cycle (IGCC) power plants. The new reactor design is presented, together with initial results for mercury and arsenic capture on five sorbents. It was expected that the capture efficiency of sorbents would ...
Directly using earth-abundant natural mineral sulfides (MSs) for elemental mercury (Hg 0) removal from coal combustion flue gas remains a challenge because extremely low surface areas of natural MSs largely suppressed their capabilities in Hg 0 immobilization. In this work, a new mindset was proposed for the activation of natural MSs by introducing surface selenide (Se 2−) ligands to achieve ...
The proposed program addresses the removal of elemental mercury and sulfur oxides from coal-fired utility boiler flue gas by catalytic oxidative adsorption on a regenerable substrate. This proposal concentrates on the preparation, characterization, and testing of metal oxide and metal oxysulfide sorbents.
Metal sulfides having a micro-porous structure are disclosed for use as sorbents for removal of mercury from flue gas. Systems are disclosed for making and using micro-porous particulates at least partially composed of alkaline earth metal and transition metal sulfides as sorbents. Calcium sulfide micro-porous powders derived from the high temperature reduction of calcium sulfate and calcium ...
A series of sorbents based on biomass-derived porous carbon-supported CuCl2 (CuCl2-PC) were synthesized and employed for elemental mercury (Hg⁰) removal from the syngas.
Feb 01, 2017· A variety of water treatment technologies exist that propose effective mercury removal. However, they may not be practical in many developing countries, largely due to their high implementation costs. We propose a cost-effective mercury removal approach based on a synthesized zeolite Linde Type A (LTA) from coal fly ash (CFA-ZA).
Mar 10, 2000· Temperature-Programmed Decomposition Desorption of Mercury Species over Activated Carbon Sorbents for Mercury Removal from Coal-Derived Fuel Gas. Energy & Fuels 2009, 23 (10), 4710-4716. DOI: 10.1021/ef801068z. Sang-Sup Lee, Joo-Youp Lee, Soon-Jai Khang and Tim C. Keener.
The authors have successfully developed novel efficient and cost-effective sorbents for mercury removal from coal combustion flue gases. These sorbents were evaluated in .
Apr 26, 2007· 9. A power plant employing a mercury removal system operated in accordance with the method of claim 7. 10. A method for making a concrete admixture that comprises adding to a cement and aggregate mixture a fly ash containing a sorbent that has been used to remove mercury from a gas stream in the power plant of claim 9. 11.
A method for removing mercury and mercury-containing compounds from a combustion gas in an exhaust gas system has the steps of providing a mercury sorbent; injecting the mercury sorbent into a stream of the mercury-containing combustion gas for a sufficient time to allow at least an effective amount of the mercury and mercury-containing compounds in the combustion gas to adsorb onto the ...
Mercury removal measurements for wet flue-gas desulfurization (FGD) systems were also quite variable, with values ranging from near zero to about 50% [l]. Much of the variation in removal performance may be caused by differences in the chemical form of the mercury in the flue gas.
During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury ... mercury removal technologies in fiscal year 2004. ... sorbents for controlling Hg emission from coal-fired electrical generating plants equipped only
The development of warm-gas cleanup (WGCU) systems for synthesis gas (syngas) cleanup in in- tegrated gasification combined cycle (IGCC) power plants has the potential to lower the costs of generating power. WGCU includes the removal of mercury (Hg), present in coal, from the syngas. Carbon-based sorbents used for Hg removal are not suitable for high-temperature Hg removal in .
In this paper, development and evaluation of novel nanocrystalline sorbents for mercury removal from warm fuel gas are discussed. Nanocrystalline materials exhibit a wide array of remarkable chemical and physical properties, and can be considered as new materials that .
Jul 01, 2020· The mercury removal performances and reaction mechanisms of diverse carbon-based sorbents along with their merits and drawbacks are fully discussed, which aims to strengthen the understanding of this emerging research topic and outline future research directions for the development of sustainable, recyclable, and cost-effective carbon-based ...
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