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Cashewnut Shell Liquid
The Cashewnut Shell Liquid (CNSL) is a buy-product obtained during processing. This is an effective replacement of scarce and expensive petro chemicals. Before this liquid is utilized for various applications, it is treated to get rid of metallic impurities as well as traces of sulphur compounds. CNSL is described often as a versatile industrial raw material. It has wide application in the manufacture of friction lining materials, surface coating, lacquer, insulating varnishes, cement, composite wood etc.
Husk
It is one of the best fuels. It is mainly used by cashew industries, tile manufacturing units and others. The chemical analysis of the cashew shell oil cake is as follows.
I. Gross Calorific value : 5056 Kcal / kg
II. Proximate analysis (% by weight)
Moisture : 8.85
Volatile matter : 68.03
Ash : 2.00
Fixed Carbon : 21.12
III. Ultimate Analysis
Carbon : 46.08
Hydrogen : 3.88
Nitrogen : 0.21
Sulphur : NIL
Moisture : 8.85
Ash : 2.00
Oxygen : 38.98
IV. Bulk density: 0.4430 g/cc
V. Ash Chemical composition: (% by weight)
Silica (as SiO2) : 61.83
Iron Oxide (as Fe2O3) : 3.99
Aluminium Oxide (as Al2O3) : 1.99
Calcium Oxide (as CaO) : 25.64
Magnesium Oxide (as MgO) : 1.88
Sodium Oxide (as Na2O) : 0.65
Potassium Oxide (as K2O) : 3.55
Sulphate (as SO3) : 0.18
Phosphate (as P2O5) : Traces
VI. Ash Fusion Characteristics
Initial deformation temperature (T1) : 840
Hemispherical temperature (T2) : 920
Fusion temperature (T3) : 1010
It is possible to use the cashew shell oil cake as conventional boiler fuel. The oil cake is also suitable feedstock for generating producer gas both for boiler and IC engines.
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