{"product_id":"direct-liquefaction-of-pretreated-low-rank-malaysian-coal-von-mohd-azlan-mohd-ishak","title":"Direct Liquefaction of Pretreated Low Rank Malaysian Coal","description":"\u003cp\u003eCoal liquefaction was usually carried out at  temperature higher than 400°C and at relatively high  pressure. Many attempts have been made to develop  methods of dissolving coal at less severe conditions  in order to increase coal liquefaction efficiency  and also to reduce capital and operation cost. In  this investigation, three different types of  pretreatments i.e. solvent swelling, in-situ solvent  soaking and heating, and microwave irradiation have  successfully been applied to untreated low rank  Malaysian coal prior to liquefaction. The main  objective of the pretreatments is to further enhance  coal conversion and oil yield at less severe  liquefaction conditions and this was successfully  achieved for all the applied pretreated coals. A  good coal-to-solvent contact and weakened coal  structure were found to be equally important factors  in determining high coal conversion and oil yield  obtained during liquefaction.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783843356176\"\u003e\u003ch3\u003etowards enhancing conversion and oil yield\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783843356176","offer_id":39497191391325,"sku":"9783843356176","price":79.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/7d760ac7-e00c-470f-9d5d-82243886e32d.jpg?v=1768976324","url":"https:\/\/shop.autorenwelt.de\/products\/direct-liquefaction-of-pretreated-low-rank-malaysian-coal-von-mohd-azlan-mohd-ishak","provider":"Autorenwelt Shop","version":"1.0","type":"link"}