IIChE NITR

  Many different types of pumps are used in the chemical processing industry. The choice of the pump depends on the properties of the liquid to be treated, including viscosity, corrosiveness, and abrasion. Liquid-gas mixtures need pumps that can handle them effectively without causing production shutdowns or pump failures. Liquids containing large amounts of solid material require strong pumps to withstand harsh conditions and efficiently transport the mixture. Liquid properties also play a key role in selecting structural materials for pumps. Corrosion is a major consideration in the chemical industry and the materials used in the pump structure must be compatible with the medium to be pumped. For example, highly corrosive liquids such as acids require the use of stainless steel in pump construction. The type of pump used in the chemical industry: Centrifugal pumps : these are the most commonly used types of pumps in the chemical industry. They are efficient pumps, simple to des

  The main functions of seals are to contain pressure, maintain vacuums, and control unwanted particles from collecting in machinery. The majority of mechanical seals for the chemical industry are planned to operate with aggressive fluids, dangerous and pollutant liquids, but also in the operation of extreme temperature conditions that these liquids can reach during processing   Classification:- 1) Dynamic Contacting Seals     Dynamic contacting seals are used with sliding surfaces.   Types:- • Radial lip seals are made of elastomer and made to form to their surroundings • Mechanical face seals consist of a set of simpler seals, that seal against each other • Dual-mechanical seals are made of two sets of seal faces with a barrier of incompressible fluid located in the space between them • Packing seals use different materials, such as graphite and cotton, to form a seal between surfaces.   USES •Radial lip seals are used primarily to exclude contaminants from

        PIPE VS TUBE PIPE TUBE 1 Key Dimensions (Pipe and Tube Size Chart) The most important dimension for a pipe is the inside diameter (ID), expressed in NPS (nominal pipe size) or DN (nominal diameter), which defines its fluid conveyance capacity. The NPS does not match the true inside diameter, it is a rough indication The most important dimensions for a   tube are the outside diameter (OD) and the wall thickness (WT). These parameters are expressed in inches or millimeters and express the true dimensional value of the hollow section. 2 Wall Thickness The thickness of a   pipe is designated with a “Schedule” value (the most common are Sch. 40, Sch. STD., Sch. XS/XH, Sch. XXS). Two pipes of different NPS and same schedule have different wall thicknesses in inches or millimeters. The wall thickness of a   tube is expressed in inches or millimeters. For tubi