The pilot-scale NOx and SOx simultaneous removal from boiler emission was performed using radical injection and chemical hybrid process. The radical injection is often called as indirect plasma (or remote plasma) and air radicals are produced at room temperature with less than 1/10 of the flue gas flow rate. The flue gas from the boiler was in the range of 450~1,470 Nm/hr, the gas temperature o...

Ecological aspects of coal combustion utilization of CO2 from flue gas Slovakia belongs to the group of twenty worst polluters throughout the world, releasing 10 12 tons of carbon dioxide per capita, whereas the worldwide average value is about 5 tons. It is known that the big electric and thermal power stations produce only 25 % of the overall production of carbon dioxide in Slovakia, whereas ...

A bench-scale entrained-flow reactor was used to extract flue gas produced by burning a subbituminous Belle Ayr coal in a 580-MJ/h combustion system. The reactor was operated at 400 degrees, 275 degrees, and 150 degrees C with a flow rate corresponding to residence times of 0-7 s. Transformations of elemental mercury (Hg0) and total gas mercury (Hg(gas)) in the reactor were evaluated as functio...

Reducing C02 emissions for addressing climate change concerns is becoming increasingly important as the C02 concentration in the atmosphere has increased rapidly since the industrial revolution. Many mitigation methods, including C02 sequestration and novel C02 utilization, are currently-under investigation. Most of these processes require C02 in a concentrated form. However the C02 from large ...

Background Greater use of gas would make metal production more environmentally friendly while improving the competitiveness of Norwegian metal producers. By “gas” we refer here to natural gas, biogas, hydrogen and flue-gases from the metal production industry’s own and other industries’ production processes. Gas can replace coal and coke or provide a basis for the development of new processes t...

An alyses of the components of municipal refuse were assembled, from which an average· composite analysis was calculated. The analyses of the flue and stack gases from 18 municipal incin erators were also tabu­ lated and plotted. A marked difference was n oted be­ tween the analyses of the stack gases and those to be expected from the combustion of the composite refuse. Much of the difference c...

The purpose of this paper and its prequel is to introduce and develop a theory of toric stacks which encompasses and extends several notions of toric stacks defined in the literature, as well as classical toric varieties. While the focus of the prequel is on how to work with toric stacks, the focus of this paper is how to show a stack is toric. For toric varieties, a classical result says that ...

Selective catalytic reduction (SCR) technology increasingly is being applied for controlling emissions of nitrogen oxides (NOx) from coal-fired boilers. Some recent field and pilot studies suggest that the operation of SCR could affect the chemical form of mercury (Hg) in coal combustion flue gases. The speciation of Hg is an important factor influencing the control and environmental fate of Hg...

This paper addresses the development of pilot scale sustainable technology for microalgae capture of CO2 from power plant flue gas in alkaline solutions to produce biodiesel from algal oil. A combination of computer tools for process simulation, economic evaluation, and environmental impact allow sustainable process assessment. Laboratory scale experiments for growth and culture for algae in la...

The Cryogenic Carbon CaptureTM (CCC) process is a retrofit, post-combustion technology that desublimates CO2 in the flue gas, separates the resulting solid from the remaining light gases, pressurizes the solid CO2, melts the CO2 and warms the light gas, and completes the CO2 pressurization with liquid CO2. This skid-scale CCC system has demonstrated successful carbon capture of 90–99% from simu...