Combined reaction device reinforcing pour point depressing of diesel by two-time hydrogenation

Abstract

The invention discloses a combined reaction device reinforcing pour point depressing of diesel by two-time hydrogenation. The combined reaction device comprises a first reaction tower, a second reaction tower, feed openings, discharge openings, a series-connection pipeline of a total discharge opening, upper reaction beds, lower reaction beds, a catalyst RN-32V, a refining agent RDW-1, cold hydrogen, a discharge valve and a series-connection valve. The combined reaction device is characterized in that the first reaction tower and the second reaction tower in series-connection application, which are arranged in parallel, are used for two-time hydrogenation and two-time catalytic splitting; therefore, the pour point depressing of diesel splitting is reinforced, and the random controllable production of high-grade diesel in a large range is realized. Compared with the prior art, the combined reaction device disclosed by the invention has the characteristics of being simple in technology, mature in application technology, easy to control in a reaction process and a reaction degree, low in cost, obvious in pour point depressing effect, and the like; therefore, the combined reaction device has good values on popularization and application.

Description

1. Technical field [0001] The invention relates to petrochemical industry, in particular to a combined reaction device for secondary hydrogenation and enhanced decondensation of diesel oil. 2. Background technology [0002] Different grades of power diesel oil are formed due to the difference in the connection point of wax condensation temperature. Low-grade diesel oil cannot be used in the cold season at the middle and bottom latitudes of the earth or the use of additional conditions is limited. High-grade diesel oil is difficult to produce and high in price. The cost is too high. 3. Contents of the invention [0003] The purpose of the present invention is to address the above problems and market demands, and provide a combined reaction device for secondary hydrogenation enhanced diesel oil point depressing with simple process, low cost and obvious effect. [0004] The object of the invention is achieved through the following technical solutions: [0005] A combined re...

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Problems solved by technology

[0002] Different grades of power diesel oil are formed due to the difference in the connection point of wax condensation temperature. Low-grade diesel oil cannot be used in the cold season at the middle and bottom latitudes of the earth or the use of additional conditions is limited. High-grade diesel oil is difficult to produce and high in price. cost too much

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