Paper recycling and oil extraction operatios.pptx

This presentation is about paper recycling operations, mushroom production operations and Ground nut decortication mechanism

1. PAPER RECYCLING: The recycling of paper is the process by which waste paper is turn into new paper products. The paper recycling process involves several steps that begin with the collection transportation and sorting. Collection. Waste papers are collected from collection bins and deposited in a large recycling container along with the paper received from other collection bins. Transportation . All of the recovered or collected paper waste then gets transported to the paper recycling plant on a collection van or truck. Sorting . After getting transported to the recycling plant, the papers are sorted into different paper categories, such as cardboard, newspapers, newsprint, magazine paper, and computer paper .

2. Operations involved in RECYCLING of PAPER Pulping High desity cleaning Screening Deinking Hot dispersion

3. PULPING: Pulping is the process where fibers are separated and treated to produce the pulp. LOW CONSISTENCY PULPER • Operates between 3 – 6 % Consistency • Low profile rotor that rotates at high speeds • Motion of rotor causes vortex of pulp stock. The baffles are used to improve mixing • High mechanical force due to impact of rotor can damage fiber and break contaminants.

4. HIGH CONSISTENCY PULPER: Typically operates between 8 – 18 % consistency High profile rotor used. The Helical screw type rotor is needed to pull down the non-fluid like high consistency stock from top to the bottom of the pulper. At the high consistency fiber-fiber rubbing dominates the forces experienced in the pulper .

5. Separates large heavy contaminants fibers to protect downstream equipment from damage and plugged. Centrifugal forces separate materials mainly due to density and size. Screening separates contaminants mainly based on size but also shape and deformability Performed by presenting a barrier for large contaminants (slots or holes) that allow fibers to pass through. HIGH DENSITY CLEANER SCREENING

6. DEINKING: Primary activity is ink removal. Works on flotation principle. Inlet consistency and foam level plays a major role. Brightness gain and ash loss are the evaluating parameters.

7. HOT DISPERSER: The primary activity is dispersion Contaminants like hot melts, glue and wax gets softened in the operation. Ink particles gets fragmented into micro particles

8. MUSHROOM PROCESSING(Button mushroom)

9. Cleaning and washing : In water containing 0.1% citric acid/0.3% sodium meta bi-sulphate Blanching : Cooking in steam or hot water at about 98 degree centigrade for 7 to 8 min in water containing 1%Nacl and 0.15 citric acid. Canning ( fillng , weighing, draining, and exhausting ): In brime solution,1% Nacl and 0.25% citric acid or ascorbic acid – temp 78 to 98 degree centigrade Sealing : All seams, holes and cracks are sealed so that germs or insects have no chance to penetrate into growing cell Seaming : A double seam is a canning process that creates a seal between can body and lid Sterilization : Higher the 121degree centigrade for at least 2 hours Cooling : To bring down the temperature to 35 degree centigrade

10. GROUNDNUT PROCESSING Groundnut decortication is the operational process of separating the pods into shells and kernals .

11. Oil Extraction process

12. Oil processing plant