CN2281201Y

CN2281201Y - Fractional column with lanteral blowing hole opening barrier

Info

Publication number: CN2281201Y
Application number: CN 96205153
Authority: CN
Inventors: 田原宇; 朱洪亮; 叶志刚
Original assignee: China University of Petroleum East China
Current assignee: China University of Petroleum East China
Priority date: 1996-03-12
Filing date: 1996-03-12
Publication date: 1998-05-13
Anticipated expiration: 2006-03-12

Abstract

The utility model relates to a novel downcomer with an outlet weir with a lateral blow hole, belonging to the structural improvement of a downcomer on a column tray for a rectifying tower. Through the improvement of the structure of a conventional outlet weir for the downcomer, the pressure drop of the column tray is lowered, and the area of the column tray is effectively utilized, and the processing ability of a processing tower is improved. The utility model is mainly composed of the outlet weir with a lateral blow hole, the wall of the downcomer, etc., wherein, the outlet weir with a lateral blow hole has a triangular structure, and the wall of the downcomer has a folding angle structure.

Description

The novel downspout that has side-blown cellular type exit weir

The utility model relates to a kind of novel novel downspout that has side-blown cellular type exit weir, and it is the structural improvement that belongs to downspout on the rectifying column column plate.It mainly is by improving the structure on conventional downcomer outlet port weir, reaches to reduce plate pressure drop, effectively utilize column plate area and improve the disposal ability for the treatment of column.It mainly is to be made of the exit weir of the triangular structure that has the hole that blows side and downcomer wall etc. with beveled structure.

Rectifying is separation method the most frequently used in the petrochemical enterprise, and in occupation of crucial status.The main body of rectifier unit is a tower, and its application is large in number and widely distributed, and its internal structure also is various.But the development of tower technology is still so far based on plate column and packed tower two big towers, and with this and deposit and developing.With regard to plate column, its structure mainly is column plate and downspout, for column plate, domestic and international research person had once dropped into great amount of manpower and material resources and has studied and explore, making novel column plate bring in constant renewal in regenerates, obtained huge economic benefit, but the research of downspout is paid close attention to seldom, the feasible liquid structure of falling as the liquid down going channel remains unchanged for a long time.; development trend maximization along with tower; plate face vapour-liquid how to improve column plate distributes, transforms the disposal ability and the product yield of original tower, just should consider the downspout of development of new emphatically, thereby increases effectively utilizing area, reduce pressure drop and improving disposal ability of column plate.

The purpose of this utility model provides a kind of novel novel downspout that has side-blown cellular type exit weir with regard to being to avoid above-mentioned the deficiencies in the prior art part, he reaches the existing area that both can effectively utilize column plate by the part-structure that changes downspout, can reduce the purpose of the pressure drop of column plate again.It mainly is to be made of the exit weir and the downcomer wall that have the hole that blows side, the exit weir that its major technology characteristics are these downspouts is to have the leg-of-mutton structure of folding, and having the side-blown hole, the upper end of its downcomer wall is that overflow weir, the lower end in column plate district then is the plank frame with knuckle.

Accompanying drawing is structural representation of the present utility model

The drawing of accompanying drawing is described as follows:

1---column plate district 2---downcomer wall 3---tower wall 4---downspout knuckle

The 5---seal pot 6---exit weir 7---hole that blows side

In order better to realize above-mentioned purpose of the present utility model, designer of the present utility model will have three The exit weir of angular structure (6) is designed to drift angle upwards, and makes its one side towards column plate district (1) offer air feed The side-blown hole (7) that body passes through, another side then are arranged in the seal pot (5) of column plate; One end of downcomer wall (2) to On exceed column plate district (1) and consist of downflow weir, the other end then extends to downwards in the seal pot (5) of column plate, and lower End (4) is located to form knuckle to the internal direction of seal pot (5).

Come enumeration design feature of the present utility model below in conjunction with drawings and Examples.

In actual design with in making, designer of the present utility model is that the exit weir that will have triangular structure is arranged on the column plate, and make its drift angle upwards, and then offering the side-blown hole that some supplied gas are passed through as required in one side towards the column plate district, another side then forms one with seal pot; Make the upper end of downcomer wall exceed column plate district certain height formation downflow weir then, its lower end is extended in the seal pot, and its lower end is had a certain degree to the inside of seal pot (being tower wall direction) folding.Like this, in the process of rectifying, because the one side at exit weir offers the side-blown hole, can make the gas on the bottom blow to the liquid layer of column plate, make the perforated area of vapour-liquid contact increase, for certain gas load by side-blown hole along continuous straight runs, gas is low by the gas prompt drop of aperture, also make the pressure drop of column plate reduce, mist entrainment also reduces simultaneously, and the trend of jet flood also reduces to some extent.Owing on the facade of exit weir, offer the side-blown hole, make the portion gas along continuous straight runs push liquid to exit weir again, thereby increased the horizontal component velocity of liquid stream, reduced gradient of liquid level, improved the vapour-liquid contact uniformity of column plate.In addition, after liquid left downspout, the gas that is subjected to horizontal direction immediately promoted and inflation, make the hysteresis district of exit weir front be able to mass transfer, that has improved column plate effectively utilizes area, has increased the net sectional area in vapor-liquid separation district, liquid level top, makes that also the actual gas prompt drop that rises is low.

Because seal pot of the present utility model and exit weir are connected as a single entity, thereby its manufacturing and install all fairly simplely, general applicability and very big promotion potential had.

Claims

1. the novel downspout that has side-blown cellular type exit weir, it is to be made of exit weir (6) that has the hole that blows side and downcomer wall (2), the exit weir (6) that it is characterized in that this downspout is to have the leg-of-mutton structure of folding, and have the side-blown hole (7), the upper end of its downcomer wall (2) be column plate district (1) overflow the weir, lower end (4) then are the plank frames with knuckle.

2. the novel downspout that has side-blown cellular type exit weir according to claim 1, it is characterized in that the drift angle with exit weir (6) of rolling over triangular structure makes progress, its one side towards column plate district (1) offers the side-blown hole (7) that supplied gas is passed through, and another side then is arranged in the seal pot (5) of column plate; One end of downcomer wall (2) upwards exceeds column plate district (1) and constitutes downflow weir, and the other end then extends to downwards in the seal pot (5) of column plate, and (4) are located to form knuckle to the internal direction of seal pot (5) in the lower end.