The main examples of indirect liquefaction methods for converting biomass to liquid fuel employ synthesis gas as their feedstock. The majority of these processes were originally developed for the conversion of coal and natural gas to liquid products. Technically, however, they should work equally well using synthesis gas produced from oxygen gasification.
WhatsApp: +86 18203695377
catalyst in the DCL of Shenhua coal at 400 °C. and MPa H. 2. resulted in a coal conversion and (gas + oil) yield, up to % and %, respectively, much higher than those obtained with FeS ...
WhatsApp: +86 18203695377
The growing demand for petroleum, accompanied by the declining petroleum reserves and the concerns over energy security, has intensified the interest in direct coal liquefaction (DCL), particularly in countries such as China which is rich in coal resources, but short of petroleum. In addition to a general introduction on the mechanisms and processes of DCL, this paper overviews some recent ...
WhatsApp: +86 18203695377
The growing demand for petroleum, accompanied by the declining petroleum reserves and the concerns over energy security, has intensified the interest in direct coal liquefaction (DCL), particularly in countries such as China which is rich in coal resources, but short of petroleum. In addition to a general introduction on the mechanisms and processes of DCL, this paper overviews some recent ...
WhatsApp: +86 18203695377
The results showed the price of coal had a more dominant effect on RSP than that of biomass. Different mix ratios and conversion rates led to RSP ranging from /bbl. LCA results indicated that GHG emissions ranged from kg CO2 eq to kg CO 2 eq/1000 MJ of liquid fuel at various biomass to coal mix ratios and ...
WhatsApp: +86 18203695377
This article is cited by 42 publications. Tengfei Yang, Congcong Liu, Wenan Deng, Chuan Li, Liyong Gan, Qingshan Niu. Influence of the Iron Proportion on the Efficiency of an OilSoluble NiFe Catalyst Applied in the Coliquefaction of Lignite and Heavy Residue.
WhatsApp: +86 18203695377
Coal Liquefaction Technology and Status ... Coal Conversion Processes Carbonization and Pyrolysis Low severity (mild gasification) High temperature Direct Liquefaction ... Shenhua DCL Process ; Miller EIA 2007 03/28/07 Department of Energy ; 15 ;
WhatsApp: +86 18203695377
The environmental footprint of coal liquefaction processes can usually be reduced by coprocessing coal and biomass and applying CO 2 capture and storage (CCS) technology but at the cost of higher ...
WhatsApp: +86 18203695377
The use of highcarbonbased feeds to produce alternative fuels and valueadded chemicals is discussed. Basic conversion chemistry, chemical structures of coal and lignin biomass are discussed, followed by process technologies for direct liquefaction, liquid quality, process control and modeling, advantages and limitations, and future trends.
WhatsApp: +86 18203695377
Pyrolysis is one of the prospective processes that can be utilized to obtain high value chemicals and energy from coal and biomass. Coalbiomass copyrolysis presents a green, lowrisk, cheap ...
WhatsApp: +86 18203695377
In the DCL technology, coal is converted to liquid by adding hydrogen at high pressure and temperature. Various DCL technologies have been developed in last hundred years such as Solvent Refined Coal (SRC)I and SRCII, Exxon Donor Solvent (EDS), HCoal and catalytic twostage liquefaction (CTSL) [7], [8], [9], [10].
WhatsApp: +86 18203695377
There remains an important need for economical coal and biomass to liquids conversion processes with reduced carbon dioxide emissions and efficient use of carbon resources. ... 1—CO 2 carbon capture and conversion to a biological material such as algae; 2—direct coal liquefaction (DCL); 3—indirect conversion of biomass and/or coal to ...
WhatsApp: +86 18203695377
The DCL process involves adding hydrogen (hydrogenation) to the coal, breaking down its organic structure into soluble products. The reaction is carried out at elevated temperature and pressure (, 750 to 850°F and 1,000 to 2,500 psia) in the presence of a solvent. The solvent is used to facilitate coal extraction and the addition of hydrogen.
WhatsApp: +86 18203695377
Coal. Direct coal liquefaction (DCL) and indirect coal liquefaction (ICL) are the two prominent processes for coaltomethanol conversion. DCL primarily involves thermal breaking of the polymeric coal structure at elevated temperatures with subsequent hydrogenation of the fragments to generate lighter molecules.
WhatsApp: +86 18203695377
The Energy and Environmental Research Center (EERC), in partnership with the Department of Energy (DOE) and Accelergy Corporation, an advanced fuels developer with technologies exclusively licensed from ExxonMobil, undertook Subtask to design, build, and preliminarily operate a benchscale direct coal liquefaction (DCL) system capable of converting 45 pounds/hour of pulverized, dried ...
WhatsApp: +86 18203695377
Direct Coal Liquefaction (DCL) commonly refers to catalytic hydrogenation of coal in a recycled oil solvent at high pressures with a catalyst. While a range of process configurations have been proposed, the most common version involves at least two high pressure slurry reactors in a series using a dispersed ironbased catalyst and hydrogen ...
WhatsApp: +86 18203695377
To meet future demand in motor fuels, coal will play a key role in areas with large coal resources and lacking crude oils. Axens' direct coal liquefaction (DCL) process is available to produce ...
WhatsApp: +86 18203695377
The main objective of this paper is to carry out a techno‐economic evaluation for the direct coal liquefaction (DCL) process based on the two primary conversion options under consideration: (a) catalytic coal liquefaction (CCL) the use of non‐donor solvents with added hydrogen pressure and (b) thermal coal liquefaction (TCL) the use of solvents with some H‐donor properties ...
WhatsApp: +86 18203695377
Direct coal liquefaction (DCL) is a promising technology to convert coal into oil, especially for countries where coals dominate fossil energy resources [1]. ... Coal utilization processes and their application to waste recycling and biomass conversion. Fuel (1994) Wang et al. ... were prepared by a solidstate insitu impregnation and ...
WhatsApp: +86 18203695377
Coal liquefaction conversion to tetralinsoluble products was determined by changes in ash content in the partially reacted coal relative to that of the unreacted coal. ... A Novel Process of Biomass Gasification for HydrogenRich Gas with Solid Heat Carrier: Preliminary Experimental Results. ... (DCL) processes and technology for coal and ...
WhatsApp: +86 18203695377
The environmental footprint of coal liquefaction processes can usually be reduced by coprocessing ... [18], [19]. In addition, utilization of biomass in the DCL process can reduce the external hydrogen demand in ... the carbon footprint of the energy conversion processes can be reduced by adding biomass and applying CCS technologies at the ...
WhatsApp: +86 18203695377
The conversion of coal to products soluble in tetrahydrofuran correlated strongly with the initial rate of gas uptake. The cyclohexane conversion of coal was also catalyzed. ... (DCL) processes and technology for coal and biomass conversion. 2011, 105154. ... A new process for catalytic liquefaction of coal using dispersed MoS2 catalyst ...
WhatsApp: +86 18203695377
يرغب أحد موردي المواد من بلجيكا في إنتاج مسحوق الحجر الجيري لملابسه...
الهند غنية بالموارد المعدنية المختلفة وهي سوق مهم لمعالجة المعادن
Copyright © 2023 GMC Co., Ltd. SiteMap
