Green Pigment 7 Case Study

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1.1 Problem Summary: Currently, the Meghmani Organics Ltd. Which manufactures Green Pigment 7 as their primary product which gives HCL and Chlorine gas as waste gases, coming from scrubber. This creates pollution in the environment as well as is not economical for the industry. So our project deals with the methods to increase recovery of these flue gases which will intern benefit the environment as well the industry. 1.2 Project Detail: Chlorination of CPC is carried out in the Glass lined Reactor in the presence of CuCl2, AlCl3, & NaCl. NaCl and AlCl3 is providing a medium in which the reaction occurs whereas the CuCl2 is acting as a catalyst for the reaction. After the Chlorination, the reaction mixture is subjected to dumping…show more content…
This physical process differs from fluorescence, phosphorescence, and other forms of luminescence, in which a material emits light Pigments are generally colored, organic or in-organic solid powder, and usually are insoluble. Pigments have a variety of applications that includes plastics, ink, and coating applications. Many materials selectively absorb certain wavelengths of light. Materials that humans have chosen and developed for use as pigments usually have special properties that make them ideal for coloring other materials. A pigment must have a high tinting strength relative to the materials it colors. It must be stable in solid form at ambient temperatures. A distinction is usually made between a pigment, which is insoluble in the vehicle (resulting in a suspension), and a dye, which either is itself a liquid or is soluble in its vehicle (resulting in a solution). There are several types of pigments. Some of the types are as follows:- • Organic Pigments • Inorganic…show more content…
i. Paints Pigment Green 7 has wide applications in all types of paints, exterior paints and enamels, lacquers, emulsion paints of various types, automotive finishes and baking enamels. It has excellent fastness to exterior exposure either full strength or as pastel shades. It is valuable color for preparing "Universal tinting Pastes". The soft texture of Phthalocyanine pigment renders its applications in paints as very facile. ii. Printing inks Pigment Green 7 is excellent in soap resistance, detergent resistance, acid resistance and alkali resistance. It is highly suitable in use with organic solvents and has highlight fastness properties. it is used in manufacturing all kindsof printing inks such as publication inks, metal lithography inks, flexography and gravure inks, lithography inks, ink for food wrappers and soap wrappers, etc.. iii. Textile Textile printing inks are well known for producing artistic designs on textiles. Phthalocyanine finds a good contribution in this field. Phthalocyanine printing emulsions with appropriate

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