The Components Of The Gas Suspension Preheater - 3477 Words

The key component of the gas-suspension preheater is the cyclone. A cyclone is a conical vessel into which a dust-bearing gas-stream is passed tangentially. This produces a vortex within the vessel. The gas leaves the vessel through a co-axial vortex-finder. The solids are thrown to the outside edge of the vessel by centrifugal action, and leave through a valve in the vertex of the cone. Cyclones were originally used to clean up the dust-laden gases leaving simple dry process kilns. If, instead, the entire feed of rawmix is encouraged to pass through the cyclone, it is found that a very efficient heat exchange takes place: the gas is efficiently cooled, hence producing less waste of heat to the atmosphere, and the rawmix is efficiently heated. This efficiency is further increased if a number of cyclones are connected in series The number of cyclones stages used in practice varies from 1 to 6. Energy, in the form of fan-power, is required to draw the gases through the string of cyclones, and at a string of 6 cyclones, the cost of the added fan-power needed for an extra cyclone exceeds the efficiency advantage gained. ROTARY KILN :THE HEART OF CEMENT MANUFACTURING The kiln is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly about its axis. The material to be processed is fed into the upper end of the cylinder. As the kiln rotates, material gradually moves down towards the lower end, and may undergo a certain amount of stirringShow MoreRelatedA Project Report On Industrial Training9125 Words   |  37 Pagesdefined as any substance which can join or unite two or more pieces of some other substance to form a unit mass, Cement as used in construction industries, is a fine powder which when mixed with water and allow to set and harden can join different components or members together to give a mechanically strong structure. Thus, cement can be used as a bonding material for bricks or for bonding solid particles of different sizes to form a monolith. Construction of houses for shelter is one of the oldestRead MoreFinancial Analysis of Bhel Company11799 Words   |  48 Pagescapability to manufacture condensing, e xtraction, back pressure, injection or any combination of these types of steam turbines. NUCLEAR POWER PLANTS ï‚ · Steam generator Turbine generator up to 700 MW capacity. GAS-BASED POWER PLANTS ï‚ · ï‚ · Gas turbines of up to 280 MW (ISO) advance class rating. Gas turbine-based co-generation and combined cycle systems for industry and utility applications. HYDRO POWER PLANT ï‚ · ï‚ · ï‚ · Custom-built conventional hydro turbines of Kaplan, Francis and Pelton types with matching