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Ammonia is one nitrogen fertilizer component that can be synthesized from in-expensive raw materials. Since nitrogen makes up a significant portion of the earth's atmosphere, a process was developed to produce ammonia from air. In this process, natural gas and steam are pumped into a large vessel. Next, air is pumped into the system, and oxygen is removed by the burning of natural gas and steam. This leaves primarily nitrogen, hydrogen, and carbon dioxide. The carbon dioxide is removed and ammonia is produced by introducing an electric current into the system. Catalysts such as magnetite (Fe3O4) have been used to improve the speed and efficiency of ammonia synthesis. Any impurities are removed from the ammonia, and it is stored in tanks until it is further processed. Potassium fertilizer component: Potassium chloride is typically supplied to fertilizer manufacturers in bulk. The manufacturer converts it into a more usable form by granulating it. This makes it easier to mix with other fertilizer components in the next step. Granulating and blending To produce fertilizer in the most usable form, each of the different compounds, ammonium nitrate, potassium chloride, ammonium phosphate, and triple superphosphate are granulated and blended together. One method of granulation involves putting the solid materials into a rotating drum which has an inclined axis. As the drum rotates, pieces of the solid fertilizer take on small spherical shapes. They are passed through a screen that separates out adequately sized particles. A coating of inert dust is then applied to the particles, keeping each one discrete and inhibiting moisture retention. Finally, the particles are dried, completing the granulation process. The different types of particles are blended together in appropriate proportions to produce a composite fertilizer. The blending is done in a large mixing drum that rotates a specific number of turns to produce the best mixture possible. After mixing, the fertilizer is emptied onto a conveyor belt, which transports it to the bagging machine. Bagging: Fertilizers are typically supplied to farmers in large bags. To fill these bags the fertilizer is first delivered into a large hopper. An appropriate amount is released from the hopper into a bag that is held open by a clamping device. The bag is on a vibrating surface, which allows better packing. When filling is complete, the bag is transported upright to a machine that seals it closed. The bag is then conveyored to a palletizer, which stacks multiple bags, readying them for shipment to distributors and eventually to farmers.
In all TI UNIT air handling units the frames are from aluminum profiles while the chassis and body panels are made from galvanized steel sheets in appropriate thicknesses. All units are completely painted in the proper thickness. Blower(S): Double width-double inlet centrifugal fans with forward curved blades are normally used for low pressure drop requirements as opposed to fans with backward curved blades which are for high pressure drop applications. Fans and housings are made of galvanized steel each set off a plus other related components such as shafts are statically and dynamically balanced, shafts are selected from proper material and size. Other power transmission components such as pulleys and belts are also suit ably chosen depending on the required fan speed and electric motor power. Fan(s) and the corresponding electric motor(s) are installed on an independent chassis which is itself installed on the main chassis using vibration dampers in order to eliminate transfer of vibrations to the structure. To further reduce the effects of vibrations, fan outlet (s) are also connected to the structure via flexible material such as canvous. All 380V/3/50Hz electric motors are selected with insulation class of (f) and ingress protection of (IP- 54). Electric motors with ingress protection of (IP- 55) are also available upon request. Coil (S): Cooling and heating coils or either one of the two depending on the Requirement May be installed. Cooling coils are available in two, types of chilled water and direct expansion (D.X.) as per clients requirements. The chilled water coils are constructed of 5/8 O.D copper tubes plate finned (8, 10, 12 or 14 FPI) in aluminum or copper upon request. The D.X. Coils are constructed of 3/8 OD copper tubes also plate finned (10, 12 or 14 FPI) in aluminum or copper as required. The chilled water for cooling coils in to be supplied by a water chiller and in the D.X. coils cooling is provided through the use of refrigerant such as R-22, R-407c or R-134a. Chilled water coils may be requested in 4 or 6 rows and as to the D.X. coils, they are available in 4 or 6 row configurations. Heating coils are available in two types of hot water and steam. The hot water coil similar to chilled water coil is offered in 1 or 2 row configurations. Steam heating coils are constructed of 1/2 seamless steel pipe spiral finned in aluminum or copper. Coils in 1 & 2 -row configurations are available upon request. Mixing box: Fresh and return air streams are mixed in the mixing box .An independent air damper is included for each air stream. Air Dampers are manufactured from aluminum in opposed blade configuration and are air sealed through the use of rubber strip gasket. Damper actuators ma y be easily installed when required. Washable aluminum filter modules 2 inches in thickness are arranged in (V) type configuration inside these boxes. Housing for
