CN1286129A

CN1286129A - Catalytic rectifying tower

Info

Publication number: CN1286129A
Application number: CN 99118444
Authority: CN
Inventors: 蓝仁水
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-31
Filing date: 1999-08-31
Publication date: 2001-03-07
Anticipated expiration: 2019-08-31
Also published as: CN1131087C

Abstract

A catalytic reqaction-rectifying tower has a main tray body composed of downspout, tray and liquid recepting tray, and a catalytic reaction's mass transfer unit composed of liquid lifting tube, filler, filler basket, catalyst, catalyst basket and liquid collecting plate. Its advantages are increased separation efficiency and reaction speed, simple structure and low cost.

Description

The novel catalytic reaction rectifying column

The invention belongs to gas-liquid mass transfer, reaction and separation equipment in the Chemical Engineering, is a kind of novel catalytic reaction rectifying column specifically.

Catalytic rectifying tower mainly is divided into packed tower and plate column two big classes, and packed tower is that catalyst is filled in the space of filler, reacts when gas-liquid is through catalyst surface in the tower, separates by filler again.Adopt this form, catalyst is filled comparatively trouble, and whole fillers must be removed during catalyst changeout, and construction volume is very big, therefore this catalytic rectifying tower difficulty promote the use of.Board-like catalytic rectifying tower generally has following several form: first kind with the catalyst porous, the material that can wrap catalyst granules is bundled into bag with catalyst, again one or more such bags are placed in the porous box, this porous box is ordered near the inlet weir, exit weir of column plate, utilize flowing naturally of liquid on the column plate, react at catalyst surface, utilize column plate to separate again; Second kind is the downspout bottom that catalyst is placed column plate, and that utilizes column plate falls liquid naturally, reacts at catalyst surface, utilizes column plate to separate again.The catalytic rectifying tower of these two kinds of structures all is that catalyst is placed in the part on common column plate, utilize the liquid that falls naturally of column plate to finish catalytic reaction, therefore catalyst surface upgrades slowly, and gas-liquid is shorter time of contact with catalyst, only once contact, just enter down one deck column plate, make that reaction rate is slow, conversion ratio is lower, be difficult to the advantage of performance catalytic reaction rectification; The third is to adopt the active material carrier to make column plate, and catalyst and column plate are integrated, and the cost of this column plate is higher, and column plate intensity is relatively poor, more difficult large-scale application.

Purpose of the present invention provides a kind of novel catalytic reaction rectifying column, this catalytic rectifying tower organically combines catalytic reaction and rectifying, it compared with former catalytic rectifying tower, had changed flowing naturally of liquid on the column plate, made catalyst surface remain continual renovation; The reaction that liquid all passes through several catalytic reaction rectification mass transfer units on each layer column plate with separate, increased the time of contact of liquid and catalyst, thereby not only quickened catalytic reaction, and increased conversion ratio.

The present invention mainly comprises the main element that tower body, downspout, seal pot, column plate, air rising hole etc. constitute, also comprise the catalytic reaction rectification mass transfer unit that constitutes by crack, the end, catalyst basket, liquid collecting plate, catalyst, extract pipe, filler, filler basket, deflector, on the air rising hole of one or more layers column plate in tower body mass transfer unit is set, formations such as catalyst basket are installed around the extract pipe of mass transfer unit.

The course of work of the present invention is: the catalytic reaction rectification mass transfer unit of even distribution some on the column plate, catalyst places in the catalyst basket that links to each other with the extract pipe.Gas by following one deck column plate rising, rise through the column plate air rising hole, liquid on the column plate is sucked the extract pipe, gas and liquid flowing is high speed turbulence mass transfer in the extract pipe, behind the filler-reinforced mass transfer in top, gas-liquid separation, gas rises to the last layer column plate, liquid descends and enters catalyst basket, carries out catalytic reaction.The reacted liquid column plate that falls back flows into next catalytic reaction rectification mass transfer unit along column plate, proceeds reaction and separates.

Specific embodiments of the present invention is described in detail as follows with reference to accompanying drawing:

Fig. 1 is a catalytic reaction rectification mass transfer unit schematic diagram.

Fig. 2 is filler and filler basket detail drawing, air rising hole detail drawing.

Fig. 3 is a conventional catalyst reaction fractionating tower schematic diagram.

Fig. 4 is the catalytic rectifying tower schematic diagram.

Fig. 5 is an extract pipe detail drawing.

Fig. 6 is the catalyst basket schematic diagram of other form.

Fig. 7, Fig. 8 are the fixed form schematic diagrames of extract pipe.

Fig. 9 is the schematic diagram of filler basket and the pipe integrated structure of extract.

Figure 10 is the catalytic rectifying tower schematic diagram of integral catalyzer basket, split type filler basket.

Figure 11 is the catalytic rectifying tower schematic diagram of integral catalyzer basket, monoblock type filler basket.

Figure 12 is the scheme of installation of integral catalyzer basket.

As shown in the figure, (1) is air rising hole, and (2) are column plates, (3) be crack, the end, (4) are catalyst baskets, and (5) are liquid collecting plates, (6) be catalyst, (7) are the extract pipes, and (8) are fillers, (9) be the filler basket, (10) are the column plate liquid layers, and (11) are downspouts, (12) be seal pot, (13) are tower bodies, and (14) are draining plates, (15) be supporting leg, (16) are journal stirrups, and (17) are angle bar; Its basic structure is to open one or more air rising holes on column plate, air rising hole can be circular or square (B shown in Figure 2 to), the air rising hole percent opening is 2-50%, and catalytic reaction rectification mass transfer unit (mass transfer unit is seen Chinese patent CN1147412A) is installed above air rising hole, in whole plate column, can adopt one or more layers said structure.Whole catalytic rectifying tower can adopt unlike material according to different operating modes and system.

Extract pipe (7) among Fig. 1 be positioned at air rising hole (1) directly over, can be circular or square, inside can add also can not add deflector (14) (circular extract pipe as shown in Figure 5 or square extract pipe), and the lower end is adopted as Fig. 7, structure and column plate (passing through supporting leg) shown in Figure 8 and welded or adopt bolting.Weld for general structure shown in Figure 7 and the column plate of adopting of circular extract pipe, also can adopt the structure (passing through angle bar) shown in Fig. 8 (a) to be connected easy access with column plate and change; The fixing of square extract pipe can adopt the structure shown in Fig. 7,8 (a), also can adopt the structure shown in Fig. 8 (b).Crack, the end (3) between extract pipe (7) lower end and the column plate (2) highly is 2～100mm.

Filler basket (9) is installed in the top of extract pipe (7), can adopt cylinder, cuboid or other version, fills filler (8) or hydraulic barrier, screen etc. in it.Filler basket (9) is general to be welded with extract pipe (7), for square extract tube packing basket (9) can with extract pipe (7) being made of one structure (as shown in Figure 9).

The welding of the base plate of catalyst basket (4) and side plate and extract pipe (7) can be adopted as Fig. 1, multi-form structure shown in Figure 6, also can adopt cirque structure, surrounds local or whole extract pipe (7).The base plate of catalyst basket (4) and cover plate adopt sieve plate, screen, expanded metals, silk screen or other porous material.

Catalyst basket (4) top can add liquid collecting plate (5) as required, also can not add.Liquid collecting plate (5) can be vertical or tilt; The height of catalyst basket (4) is 10～600mm, and the height of filler basket (9) is 10～300mm, and the height of extract pipe (7) is 10～500mm, and the height between the base plate of catalyst basket (9) and the column plate (2) is 0～400mm.

Catalyst basket (4) and filler basket (9) can adopt the structure of unidirectional or multidirectional sealing according to the concrete operations situation.

Fill corresponding catalyst (6) according to different catalytic reactions in the catalyst basket (4), concrete form according to catalyst (6), can directly be filled in the catalyst basket (4), or distribution homogeneous media distribution catalyst (6) such as employing filler, grid, perhaps catalyst (6) is bundled into bag with material porous, that can wrap catalyst granules, again one or more such bags are placed in the catalyst basket (4), be convenient to the dismounting of catalyst (6).

As shown in figure 10, adjacent catalyst basket can be merged into as a whole formula catalyst basket, is convenient to the installation and removal of catalyst (6).

As shown in figure 11, extract pipe (7) and filler basket (9) are made overall structure, and adjacent extract pipe (7) and filler basket (9) are merged into the strip mass transfer unit of an integral body, accordingly catalyst basket is merged into the integral catalyzer basket, so just simplify tower plate structure greatly, be convenient to the installation of column plate and the installation and removal of catalyst.

As shown in figure 12, the integral catalyzer basket can adopt at extract pipe (7) and go up welding journal stirrup (16), again with the catalyst basket stretcher on journal stirrup (16), perhaps adopt and on column plate, weld supporting leg versions such as (15), again catalyst basket is fixed with it.

Aforesaid catalytic reaction rectification mass transfer unit can be contour arrangement according to the different operating situation, also can just be staggered.

The present invention can be used for the catalytic reaction rectification equipment in the chemical process, this tower has fundamentally solved the packing and the Packing Problems of present catalytic rectifying tower catalyst, because problem, catalytic reaction and distillation operation imbalance problem fall in the pressure that causes of packing into of catalyst, strengthened the catalyst surface renewal, prolonged the time of staying of liquid phase, separative efficiency and reaction rate are greatly improved at catalyst surface.The present invention is simple in structure, and is cheap, remarkable in economical benefits.

Claims

1. novel catalytic reaction rectifying column, it mainly comprises tower body (13), downspout (11), seal pot (12), column plate (2), air rising hole (1) constitutes main element, it is characterized in that it also comprises by crack, the end (3), catalyst basket (4), liquid collecting plate (5), catalyst (6), extract pipe (7), filler (8), filler basket (9), the catalytic reaction rectification mass transfer unit that deflector (14) constitutes, on the air rising hole (1) of one or more layers column plate (2) in tower body (13) mass transfer unit is set, extract pipe (7) is provided with the catalyst basket (4) of catalyst filling (6) on every side.

2. according to claims 1 said novel catalytic reaction rectifying column, it is characterized in that in the said catalyst basket (4) directly catalyst filling (6) or adopt distribution homogeneous media distribution catalyst (6) such as filler, grid or catalyst (6) is bundled into bag with material porous, that can wrap catalyst granules, more one or more such bags are placed in the catalyst basket (4).

3. according to claims 1 said novel catalytic reaction rectifying column, it is characterized in that said catalyst basket (4) can surround the local of extract pipe (7) or surround whole extract pipe (7), perhaps adjacent catalyst basket is merged into as a whole formula catalyst basket, its top blind flange and base plate adopt sieve plate, screen, expanded metals, silk screen or other porous material.

4. according to claims 1 said novel catalytic reaction rectifying column, it is characterized in that said catalyst basket (4) can add or not add liquid collecting plate (5), liquid collecting plate (5) can be vertical or tilt, extract pipe (7) can be square or circular, and inside can add or not add deflector (14).

5. according to claims 1 said novel catalytic reaction rectifying column, the height that it is characterized in that said catalyst basket (4) is 10～600mm; The height of said filler basket (9) is 10～300mm; The height of said extract pipe (7) is 10～500mm; Height between the base plate of said catalyst basket (9) and the column plate (2) is 0～400mm; Air rising hole (1) percent opening on the said column plate (2) is 2～50%; Crack, the end (3) between said extract pipe (7) lower end and the column plate (2) highly is 2～100mm.

6. according to claims 1 said novel catalytic reaction rectifying column, it is characterized in that said extract pipe (7) and filler basket (9) can be the split combinations, it also can be the strip mass transfer unit that whole, adjacent extract pipe (7) and filler basket (9) can be merged into an integral body.

7. according to claims 1 said novel catalytic reaction rectifying column, it is characterized in that said catalyst basket (4) and filler basket (9) can adopt the structure of unidirectional or multidirectional sealing.

8. according to claims 1 said novel catalytic reaction rectifying column, it is characterized in that said filler basket (9) can adopt cylinder, cuboid, fill filler (8) or hydraulic barrier, screen in it, can not fill whatever yet, this moment, extract pipe and filler basket became one, i.e. vertical sieve tray.

9. according to claims 1 said novel catalytic reaction rectifying column, it is characterized in that said catalytic reaction rectification mass transfer unit can be contour, also can just be staggered.