Urea synthesis reactor, method of use thereof, and urea synthesis method

Abstract

The present application provides a urea synthesis reactor, comprising a casing and a first inlet pipe and a second inlet pipe, the casing extends along the axis, and the first inlet pipe and the second inlet pipe pass through corresponding openings of the casing and inserted and connected in the housing to the light phase distributor and the heavy phase distributor, respectively, to supply the light phase comprising carbon dioxide and the heavy phase comprising ammonia to the reactor; the light phase distributor comprises one or more tubular members, The tubular member extends and / or distributes in cross-section of the reactor around the axis and is provided with inlet holes spaced apart from each other to distribute the light phase in a plurality of inlet points around the axis in the reactor middle horizontal distribution.

Description

technical field [0001] The invention relates to a urea synthesis reactor and method. Background technique [0002] It is generally known to produce urea on an industrial scale via the direct two-phase reaction of ammonia and carbon dioxide under conditions of high temperature and pressure. [0003] A typical urea synthesis reactor in a urea plant is supplied with a substantially gaseous stream of carbon dioxide and a substantially liquid stream of ammonia / ammonium carbamate. The reactants are fed into the reactor from below via the bottom part of the reactor and via corresponding distributors. [0004] figure 1 The lower half of a typical urea synthesis reactor 1 of known type is shown schematically in a simplified manner. [0005] Generally, the reactor 1 extends along a vertical axis A and comprises a housing 2 internally delimiting a reaction chamber 3; the housing 2 has a substantially circular main part 4 and a dome-shaped bottom part 5 (in particular, approximately ...

AI Technical Summary

Problems solved by technology

[0013] In addition to the associated constructional complexity, mainly due to the use of elbow-shaped inlet pipes (often having to be cast) and the need to punch holes in the bottom part of the reactor, the greatest disadvantage constitutes that the vertical arrangement of the distributors does not allow reaction evenly distributed over the entire cross-section of the reactor

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