Oxygen enrichment process enhances burning zone control and improves kiln stability in the industrial furnace or rotary kiln (Eriksson et al. This improves the overall combustion process and the resulting heat transfer increases flame temperature and the amount of available heat (Eriksson 2015). Oxygen enrichment which is known as increased O 2% in combustion air. This results in a flame temperature below that attainable with pure oxygen (Schorcht et al. The nitrogen contained in air actually inhibits fuel from reacting with oxygen. N 2 is inert gas and does not contribute in heat released through combustion reaction (Oates 1998). Oxygen is required for any combustion process and ambient air is the most common source of oxygen that contains about 79% Nitrogen by volume. The original substance is called the fuel and the source of oxygen is called the oxidizer (Mathieu 2006). In CO 2 rich exhaust gases, water vapour is removed though condensation process and remaining CO 2 is captured through CCS technology.Ĭombustion is a chemical process in which a substance reacts rapidly with oxygen and releases heat as product.
In this condition exhaust gases are more CO 2 rich that are partially recirculate along with combustion air. By increasing oxygen content in air, N 2 content is limited that leads to less NOx in exhaust gases. Oxygen enrichment is helpful in curbing gaseous emission. An increase in oxygen in the combustion air can reduce the energy loss in the exhaust gases and increase the fuel combustion efficiency. The chemically inert nitrogen dilutes the reactive oxygen and carries away some of the energy in the hot combustion exhaust gas during the air-fuel combustion process.
The air is used as an oxidizing agent content in industrial combustion processes that has maximum nitrogen component (78–79%) by volume. In typical cement manufacturing process, 60% of CO 2 emissions are due to the transformation of limestone to lime (the calcination process) and rest 40% is due to fuel combustion in pyro processing. Cement industry is responsible for approximately 8% of the global anthropogenic CO 2 emissions (IPCC, 2006) and the cement market is expected to grow with increased industrialization and urbanization. Oxygen-enriched combustion is one of the latest technologies that may improve combustion efficiency depending on the exhaust gas temperature and percentage of oxygen in the combustion air. There is an absolute need to adopt innovative technologies to improve energy efficiency with minimum possible environment emission and conservation of natural resources. Lime water turns milky as the Calcium hydroxide (chemical name for limewater) reacts with carbon dioxide to form Calcium Carbonate which is insoluble in water and thus forms a milky white precipitate.Sustainable Production, Life Cycle Engineering and Management A positive test will result in the lime water turning milky. The best way of testing for Carbon dioxide is to bubble it through lime water.
OXYGEN NOT INCLUDED LIME FREE
Firstly it will extinguish a flame, however, as any oxygen free gas will also extinguish a flame this is a poor gas test and may result in misidentification. There are sometimes confusions as the splint can create a pop very slightly on re-ignition, which sometimes is mistaken for hydrogen. A hydrogen pop is much more violent, sometimes enough to completely extinguish the splint. This is a simple but effective test for oxygen.
Oxygen supports combustion so a good method of testing for oxygen is to take a glowing splint and place it in a sample of gas, if it re-ignites the gas is oxygen. Hydrogen reacts very quickly with oxygen to form water. Hydrogen will make a squeaky pop when lit in air, care needs to be taken with this test as large amounts of hydrogen are very explosive in air. To test for hydrogen a small sample can be ignited. This page will be updated further in the near future, however here are some tests for common gases given off in reactions Hydrogen On this page you will find information on the most common types of gases and their tests. It is therefore important to be able to test for several common gases. Many reactions produce gases which can help identify the mechanisms and products involved.
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