Flow adjusting type water filling structure for reaction effluent pipeline

Abstract

The invention discloses a flow adjusting type water filling structure for a reaction effluent pipeline. An inlet section of a water filling circular pipe is vertically crossed and fixedly connected with a main circular pipe, the inlet section and an outlet section of the water filling circular pipe are connected by a 90-degree elbow in the main circular pipe, the interior of a hole in the outlet section of the water filling circular pipe is provided with a flow adjusting circular pipe, the outlet section of the water filling circular pipe and the flow adjusting circular pipe are connected into a whole by flow adjusting plates which are uniformly arranged along the circumferential direction of the flow adjusting circular pipe, and the flow adjusting circular pipe, the outlet section of the water filling circular pipe and the main circular pipe are coaxially arranged. The structure has the advantages that the outlet section of the water filling pipe is provided with a flow adjusting part, so the turbulence degree of the water filling flow is reduced, and the stability of the water flow entering the reaction effluent pipeline is guaranteed; the water filling outlet is vertically and upwards arranged, so the impact of the water filling flow on the pipeline at single side under the action of gravity is effectively avoided; the problems of erosion corrosion, wall thinning and hole penetration of pipelines near water filling points caused by the water filling flow turbulence are solved, the occurrence of non-scheduled shutdown accidents is reduced, and the service life of a multi-phase flow pipeline system is prolonged.

Description

technical field [0001] The invention relates to a water injection structure for a reaction effluent pipeline, in particular to a rectified water injection structure for a reaction effluent pipeline. Background technique [0002] The petrochemical industry is an important basic industry for the development of the national economy. After decades of development, hydrogenation technology has become a pillar technology in the petrochemical industry. The reaction effluent system is an important part of the hydrogenation unit. Water injection is a process requirement of hydrogenation technology, and its purpose is to dissolve the ammonium salts (mainly NH 4 HS and NH 4 Cl), to prevent the crystallization of these ammonium salts, blocking the pipes, heat exchangers and air cooler tube bundles of the reaction effluent system. At the same time, water injection can also dissolve some corrosive media such as hydrogen sulfide, hydrogen chloride, and ammonia in the reaction effluent, ef...

AI Technical Summary

Problems solved by technology

Its thinning is closely related to the water injection structure. The structure of direct lateral injection will cause erosion of the pipeline on the opposite side of the water injection; the statistical case of the NACE technical committee shows that the countercurrent water injection method will cause erosion of the injection casing; the downstream water injection structure, There is a change in the flow direction of the water flow, and the instability of the water flow increases. After the water enters the reaction effluent pipe from the water injection pipe, there is still the problem of erosion on the wall surface

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