Gas-phase feeding diffuser
A diffuser and feeding technology, applied in the field of internal components, can solve the problems of uneven distribution of gas phase feed, complex fluid shaping structure, large pressure drop of gas-liquid diffuser, etc., to achieve good uniform distribution characteristics, good buffering effect, The effect of reducing the pressure drop
Active Publication Date: 2014-02-12
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology
[0007] The purpose of the present invention is to provide a gas-phase feed diffuser to solve the problems of uneven distribution of gas-phase feed, complex fluid shaping structure, and gas-phase feed Problems such as large pressure drop through the gas-liquid diffuser
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[0050] use figure 1 The shown gas phase feed diffuser (the inner circular hole on the upper shaping plate 21 and the inner circular hole on the lower shaping plate 22 are coaxial with the cylinder body 1 of the diffuser), in a small fixed bed reactor (referred to as reaction The cold mold test was carried out on the device), and the test temperature was 25°C. The reactor is provided with a cylindrical body and a top head; the inlet is located on the top head, and the bottom of the cylindrical body is an open structure. The overall height of the reactor is 4000 mm, the inner diameter of the cylindrical reactor body is 1000 mm. The diffuser is installed at the inlet of the reactor, inside the top head of the reactor. See Figure 8 . The materials of the components of the diffuser, the reactor and the intake pipe are all plexiglass.
[0051]The inner diameter a of the diffuser cylinder 1 is 186 mm, and the overall height H of the diffuser is 390 mm. The vertical distance fr...
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The invention discloses a gas-phase feeding diffuser for solving the problems that the gas-phase feeding material is distributed non-uniformly, the fluid shaping structure is complex and the pressure drop of the gas-phase feeding material flowing through a gas-liquid diffuser is large when the existing gas-liquid diffuser is used for diffusion of the gas phase feeding material. The gas-phase feeding diffuser is provided with a barrel (1) and a perforated distributing plate (3), wherein a fluid shaping structure is arranged in the barrel, a slit (11) is arranged at the lower part of the barrel, one layer of the distributing plate is connected at the bottom of the barrel, the fluid shaping structure comprises an upper shaping plate (21) and a lower shaping plate (22) which are annular plates and are arranged horizontally, the edge of the excircle of the annular plate is connected with the inner wall of the barrel, shaping plate holes (20) are formed both in the upper shaping plate and the lower shaping plate, and a middle hole (31) and an annular hole (32) are formed in the distributing plate. The gas-phase feeding diffuser is suitable for diffusion of the gas-phase feeding material in a gas-phase hydrogenation reactor of a fixed bed in the petroleum refining and petrochemical industry.
Description
technical field [0001] The invention relates to a gas-phase feed diffuser used in a fixed-bed gas-phase hydrogenation reactor in petroleum refining and petrochemical industries, and the gas-phase feed diffuser belongs to an internal component of the fixed-bed gas-phase hydrogenation reactor. Background technique [0002] In recent years, with the continuous improvement of environmental protection requirements, there are more and more light oil hydrogenation units (gasoline hydrogenation, naphtha hydrogenation, etc.), many of which use fixed-bed hydrogenation reactors. At present, two-stage adiabatic fixed-bed reactors are used in the traditional gasoline hydrogenation process at home and abroad. The first stage adopts the gas-liquid phase hydrogenation method, and the second stage adopts the high-temperature gas-phase hydrogenation method; due to the performance of the catalyst, the composition of the raw material and the flow state And other differences, resulting in differ...
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IPC IPC(8): B01J8/02C10G49/00
Inventor 蔡连波陈强盛维武庞晶晶赵晓青
Owner CHINA PETROCHEMICAL CORP