Collecting apparatus for reactor, and reactor

Abstract

The invention provides a collecting apparatus for a reactor, and the reactor, and relates to the technical field of chemical equipment. The collecting apparatus for the reactor is arranged on the bottom sealing head of the reactor, and comprises a collecting cover body, wherein the collecting cover body comprises a top end surface and a side end surface, the top portion of the side end surface isconnected to the edge of the top end surface, the bottom portion of the side end surface is connected to the inner wall of the bottom sealing head, the collecting cover body is provided with a circulation pore channel for circulating a liquid material, the top end surface of the collecting cover body is arc-shaped, and the convex surface of the top end surface is higher than the top portion of theside end surface. The reactor comprises the collecting apparatus for the reactor, wherein the collecting apparatus is arranged on the inner wall of the bottom sealing head of the reactor, such that the catalyst can be effectively isolated, and the fluid above the collecting apparatus has the uniform velocity distribution.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to a collection device for a reactor and a reactor. Background technique [0002] In the gas-solid or gas-liquid-solid heterogeneous catalytic reactions involved in petroleum refining and chemical production, such as hydrocracking of heavy oil, hydrofinishing of lubricating oil, hydrofining of naphtha, coal tar Hydrogenation, hydrogenation of wax fat to prepare fatty alcohol and hydrogenation of butynediol to butanediol are commonly used in fixed bed reactors. In this type of processing, the reaction materials flow in from the top of the fixed bed reactor, and after being shaped by the inlet diffuser, they fall on the distribution plate. It flows downward and finally flows out from the outlet collector at the bottom of the reactor. The outlet collector plays a supporting role for the catalyst, and the bottom is connected with the outlet pipeline, allowing the gas-liquid...

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Problems solved by technology

[0003] At present, there are several problems in the outlet collector in industrial production: (1) The scale of the fixed bed reactor tends to be large-scale (with a diameter of more than 4-5m), and the size of the outlet collector installed in the bottom head of the reactor also varies with the size of the outlet collector. The increase in volume will bring a lot of inconvenience to its manufacture, transportation and installation

The large-volume outlet collector is limited by the size of the reactor inlet when it enters the reactor, and because of its heavy weight, it needs to be hoisted by a crane during the installation process, which makes the operation difficult

(2) At present, bolts and other fasteners are used to connect the outlet collector and the head, which is cumbersome to install and requires operators to work in a closed space for a long time, and the operation risk is high

The catalyst particles are broken in the reactor, and the broken catalyst will block the wire mesh, causing partial blockage of the outlet collector and even further reaction of the product to produce coking

In addition, under the high temperature and pressure in the reactor and the friction of the catalyst, there is also a risk of damage to the wire mesh. On the one hand, the damaged position will leak the catalyst, causing the catalyst to be mixed into the reaction product stream; Debris can further cause clogging of the outlet collector

Once local damage or blockage occurs, the entire outlet collector must be removed for replacement, which is difficult and expensive to operate

(4) The cylinder structure of the existing cylindrical outlet collector occupies a large space, occupying a part of the catalyst filling space, and the product accumulates near it, affecting the distribution of the upper liquid

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