Impact of Organic Hydrocarbons on Fuel Properties and Engine Characteristics of Thermally Cracked Cashew Nut Shell Liquid
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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JR_JREE-10-2_010
تاریخ نمایه سازی: 3 آبان 1402
Abstract:
The present study aims to explore the role of characterized hydrocarbons in thermally cracked shell liquid in determining its overall fuel properties and combustion characteristics in a CI engine. For this purpose, waste shell liquid was extracted from waste cashew nut shell by means of cold extraction technique using a simple electrically operated mechanical screw press, which reported maximum extractable oil content as ۱۷.۷ %. In addition, it was thermally cracked at ۳۵۰-۴۰۰ °C using conventional heating for both lab-scale and pilot-scale extraction. Based on its chemical composition, raw shell liquid contained anacardic acid and cardol, while thermally cracked shell liquid had cresol and methyl oleate as their dominant hydrocarbon compounds. Their composition was found to be ۵۱.۸۴ %, ۳۳.۶۸ %, ۴۳.۸۷ %, and ۲۸.۴۹ %, respectively. According to their contribution, both cyclic and aromatic as well as linear-chained hydrocarbons exhibited significant effect on the fuel properties of the cracked shell liquid, with carbon atoms contributing to its physical and thermal properties, whereas cyclic and aromatic hydrocarbons enhance its flow characteristics. Next, neat and blend samples of this cracked shell liquid with petro diesel reported higher peak in-cylinder pressure by ۵.۶ % (on average) due to the presence of fatty acid esters, which induced early ignition and provided sufficient time for combustion. Meanwhile, higher emission levels were attributed by both cyclic and aromatic and linear-chained hydrocarbons, citing aromaticity and unsaturation in their molecules, which also resulted in reduced thermal efficiencies by ۱۲.۵ % (on average), upon accounting for their inferior calorific content. In conclusion, it is evident that hydrocarbons in these treated shell liquids play a significant role in their fuel properties and engine characteristics.
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Authors
Gokul Srinivasan
Research and Development Department, Steamax Envirocare India Private Limited, Janak Puri, Delhi-۱۱۰۰۵۸, India. Research Associate, R&D Department, Steamax Envirocare Pvt. Ltd., Janak Puri, New Delhi-۱۱۰۰۵۸, India
Aditya Mahajan
Research and Development Department, Steamax Envirocare India Private Limited, Janak Puri, Delhi-۱۱۰۰۵۸, India.
Rajiv Seth
Research and Development Department, Steamax Envirocare India Private Limited, Janak Puri, Delhi-۱۱۰۰۵۸, India.
Rakesh Mahajan
Research and Development Department, Steamax Envirocare India Private Limited, Janak Puri, Delhi-۱۱۰۰۵۸, India.
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