Forming technology and forming device for liquid residues

Abstract

The invention discloses a forming device for liquid residues generated in a direct coal liquefaction process. The forming device comprises a cooling tower and a forming trough, wherein the top of the cooling tower is provided with a liquid residue inlet and a steam inlet, and the bottom of the cooling tower is provided with a liquid residue outlet and a steam outlet; and the forming trough is internally provided with a water storage space, and the liquid residue outlet is communicated with the water storage space in the forming trough. According to a use method of the forming device, high-temperature liquid residues are subjected to heat transfer with water vapor in the cooling tower so as to be pre-cooled and then flow into the water storage space of the forming trough to be cooled and formed underwater. The forming device disclosed by the invention is applicable to a pollution-free forming process for liquid residues obtained in the direct coal liquefaction process.

Description

technical field [0001] The invention relates to a method for forming liquid residue and a used forming device, belonging to the technical field of coal liquefaction. Background technique [0002] Coal direct liquefaction is a technology that directly converts coal into liquid fuel through catalytic hydrogenation under high temperature and high pressure. At present, a variety of coal direct liquefaction processes have been successfully developed in the world, including the German IGOR process, the American H-Coal process, and the Japanese NEDOL process. and China Shenhua Craft. [0003] The direct coal liquefaction process mainly includes a crushing and drying unit, a coal slurry preparation unit, a hydrogenation liquefaction unit, a solid-liquid separation unit and a liquid refining unit. Among them, the solid-liquid separation unit is a process of separating and treating the liquid fuel and liquid residue in the hydrogenation liquefaction product. In order to facilitate th...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the method of using low-temperature liquid nitrogen to condense smoke in the prior art cannot completely prevent the smoke generated in the formation of liquid residues from spreading to the outside world, so there will still be a lot of smoke that will be condensed in the future to diffuse into the environment; and then Propose a liquid residue molding process that can prevent the smoke generated by liquid residue molding from spreading to the outside world

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