摘要:
The present invention relates to coal chemical processing, and particularly to a thermal dissolution catalysis method for preparing liquid fuel from lignite. The method comprises steps of: 1) crushing and drying lignite into coal powder; 2) stirring and mixing coal powder, a solvent and a catalyst sufficiently to form coal slurry, wherein there are 30-40% mass of coal powder, 60-70% mass of solvent, and 0.5-1% mass of catalyst relative to coal powder mass; 3) subjecting the coal slurry to thermal dissolution catalysis reaction to obtain thermal dissolution liquefied product, wherein the reaction is carried out for 30-60 minutes at a temperature 390-450° C. under a pressure 5.0-9.0 MPa; 4) separating the thermal dissolution liquefied product into gas, liquid and solid phases; and 5) upgrading the liquid product into liquid fuel. The present invention further discloses a catalyst and a solvent for use in the above method. The method according to the present invention requires moderate operation conditions and can enable organic matter in the lignite to convert at a relatively high level, the liquid fuel product, after being processed, can be used to prepare engine fuel meeting a national standard; the method requires a simple preparation apparatus, a small investment and a low cost and is a coal liquefying method meeting China's status quo.
摘要:
A system includes one or more computing devices accessible over a network and managed by a service provider. A hoster user accessing the system over the network, and who is at least partially unaffiliated with the service provider, is permitted to instantiate in accordance with a desired configuration a virtual machine hosted at and realized by hardware resources of the computing devices. The hoster user is further permitted to assign one or more end users unaffiliated with the service provider to the virtual machine in accordance with a desired permission specified by the hoster user. The end users accessing the system over the network, and who are unaffiliated with the service provider, are permitted to access and use the virtual machine in accordance with the desired permission specified by the hoster user.
摘要:
The present invention discloses a process for hydroconverting a heavy hydrocarbon chargestock, wherein said chargestock oil is first contacted with a highly active homogeneous hydrogenation catalyst to effect the hydrogenation reaction so that macromolecular radicals of the residue (the precursor of coke) form as less as possible, thereby decreasing the output of coke in the hydrocracking of the residue; when the reaction proceeds to a certain extent, a solid powder is added to adsorb the macromolecular radicals of the residue formed during the reaction and lower their reaction activity, thereby preventing them from further condensing to coke and/or depositing due to polymerization. The synergetic action of the two sorts of substances makes it possible to produce substantively no coke or less coke during the hydrogenation of residue in a suspension bed and prolong the operation lifetime of the unit.