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1.1 Introduction

During last summer vacation, we had visited the SWAMI TEXTILE. For our IDP project. Swami Textile is a dyeing factory, where the threads are dyeing in bulk. Main components those used for dyeing threads are Boiler, Process equipment, Pipes, Colour Mixture for mixing the different colours. Here steam application is as a process steam. Product quality depends upon quality of steam. So Steam is the main parameter for satisfactory operation. Steam quality depends upon various factors like feed water, boiler fuel, type of boiler, steam carrying pipes, distance between steam generation point and area of application.

The whole unit of dyeing incorporates a wood fired water tube boiler, steam carrying pipes, dyeing containers with number of nozzles filled with different colours, and a chimney for exhaust gases. Steam generated by the boiler is used as a process steam for dyeing purpose. Heat carried by steam is used for transferring heat to the threads bundle to impregnate the colour into threads properly.

During Dyeing operation, Water is fed to the boiler at room temperature by pump. Steam generation takes place in wood fired water tube boiler using wood as a fuel in the furnace. Steam is carried from boiler tubes to point of application where steam is used for heating the threads. First threads are coloured by sprays and then heat is used threads for drying purpose. Steam used for this purpose should be such that it would be dry enough to make thread dry but it should wet also so that threads are no burned out. So, Steam of uniform quantity is necessary. Flue gases produced by burning of fuel will be disposed to atmosphere through metal chimney.