CN200963585Y

CN200963585Y - Gas-liquid distributor

Info

Publication number: CN200963585Y
Application number: CN 200620134122
Authority: CN
Inventors: 吴德飞; 孙丽丽; 李�浩; 张迎恺; 高晖
Original assignee: Sinopec Engineering Inc; China Petrochemical Corp
Current assignee: Sinopec Engineering Inc
Priority date: 2006-10-20
Filing date: 2006-10-20
Publication date: 2007-10-24
Anticipated expiration: 2016-10-20

Abstract

The utility model, an air-liquid distributor, is a component of hydrogenating reactor used for a petroleum refining process and a hydrogenating device in chemical industry, which comprises a round bubble cap, a pipe base, a connecting plate, a knapper, a bolt and a nut; the round bubble cap is aligned with the centerline of the pipe base, the bolt crosses through a hole at the top center of the round bubble cap and the connecting plate, the nut is used to connect the round bubble cap with the connecting plate, the connecting plate is a trough-shaped plate, the lower end of the which is connected with the top of the pipe base by welding; the knapper is arranged at the lower end of the pipe base and connected with the lower end of the pipe base by welding; the lower section of the pipe base is arranged at the opening of a distributing panel; a seam on the round bubble cap is a spiral structure, and a round center hole is arranged at the center of the knapper, meanwhile, the knapper is provided with a plurality of radial seams; after the round bubble cap with spiral seams and the knapper with center hole are used, the utility model can reduce the pressure drop of the air-liquid distributor, and can improve the operation flexibility, and can specially correct a shortcoming in prior distributor in which the liquid spraying area from outlet is small, and the peak value distributed along radial direction is bigger.

Description

Gas-liquid allotter

Technical field

The utility model belongs to petroleum refining and chemical industry equipment.A kind of hydrogenation reactor inner member that is used for petroleum refining and chemical industry hydrogenation plant of more specifically saying so.

Background technology

Gas-liquid allotter is a kind of inner member that is used for the downward fixed bed reactors of gas and liquid flowing, is used to the biphase gas and liquid flow that distributes viscosity bigger, is applicable to the fixed bed reactors in petroleum refining, the petroleum chemical industry.

Existing gas-liquid allotter can be divided into overflow type, suction type and the mixed type of the two by the liquid mode of entrance.

Overflow type, promptly liquid enters distributor by spout hole, and the main feature of overflow type is: pressure drop is little, is fit to high viscosity medium, and shortcoming is harsh to the requirement that levelness is installed, and is generally used in the minor diameter reactor or under the situation of high viscosity medium.

The liquid of suction type gas-liquid allotter is to carry by gas to enter distributor, and the liquid level on its distribution plate does not play a decisive role to distribution effects, and its advantage is bigger to the levelness allowable error is installed, and shortcoming is the medium bad adaptability bigger to viscosity.The advantage that is respectively these two kinds of suction type gas-liquid allotters of US515185 and ZL92201277.6 as the domestic and international patent No. is bigger to the levelness allowable error is installed, shortcoming is that the overall presure drop of distributor is bigger, adaptability to high viscosity medium is relatively poor, and operating flexibility is less.

The two mixed type of overflow type and suction type is to have spout hole in the middle and lower part of central tube, and the patent No. is ZL98250778.X.The pressure drop performance of mixed type distributor and operating flexibility all make moderate progress than overflow type and suction type, but distribute performance to descend to some extent.Its reason is that partially liq directly enters central tube by spout hole, and this part liquid does not pass through atomizing, to the distribution performance generation severe bad influence of distributor.

Using the more suction type and the common shortcoming of mixed type gas-liquid allotter at present on large-scale plant is that export distributor spray liquid face is little, and radially the peak value of Fen Peiing is bigger than normal.

Summary of the invention

The purpose of this utility model just is the shortcoming at US515185, ZL92201277.6 and ZL98250778.X, reduce the gas-liquid allotter pressure drop, improve the operating flexibility performance by improving structural design, particularly improve existing export distributor spray liquid face peak value shortcoming bigger than normal little and that radially distribute.

In order to achieve the above object, the technical solution adopted in the utility model is: this gas-liquid allotter comprises members such as round bubble cap, central tube, connecting plate, destroyer, screw bolt and nut; The central lines of circle bubble cap and central tube, bolt passes the perforate of round bubble cap and connecting plate top center, employing nut and bolt will justify bubble cap and connecting plate is fastenedly connected; Connecting plate is a trough plate, and connecting plate lower end and central tube top are the solder joint structure; Destroyer is in the lower end of central tube, and the bottom of central tube is installed in the perforate of distribution plate; Its characteristics are that the bar seam of circle on the bubble cap is helical structure, and the destroyer center has a round center hole, and many radial seams are arranged on destroyer simultaneously.

The gusset that has the 3-4 root to link to each other with the horn-like enlarging of central tube lower end on the destroyer of described gas-liquid allotter, gusset and central tube lower end are the solder joint structure.

Bar seam on the existing bubble cap formula gas-liquid allotter is linear, and the utility model adopts the advantage of spirality bar seam to mainly contain three: the one, can provide bigger interacting space for gas-liquid two-phase, and strengthen the atomizing effect of liquid.Under identical seam height, spirality bar seam can provide bigger gas passage, has increased mass transfer space and chance between gas-liquid two-phase, and atomizing effect is better than linear bar seam, has improved the distribution performance of distributor; The 2nd, the pressure drop of spiral bar crack structure is lower than linear bar crack structure, operating flexibility height.The length of spiral bar seam is much larger than linear bar seam, and therefore gas improve the carrying capacity of liquid, improves operating flexibility thereby reduce pressure drop; The 3rd, after gas-liquid two-phase enters central tube by the spiral bar crack structure, has bigger spinning momentum, the liquid that accumulates in the central tube center moves near the central tube inwall under action of centrifugal force, help to increase export distributor spray liquid face, thereby reduce the peak value that liquid radially distributes, the distribution performance that improves distributor is benefited.Round center hole on the utility model destroyer can be avoided because the barrier effect of destroyer causes destroyer central lower liquid rough sledding on the low side; Many radial seams on the destroyer can scatter liquid comparatively uniformly simultaneously, help to increase the spray liquid face of export distributor, improve distribution effects.

This utility model is by improving structural design, adopt the round bubble cap of spirality bar seam and the destroyer that center drilling has many radial seams, can reduce the gas-liquid allotter pressure drop, improve the operating flexibility performance, particularly can improve existing export distributor spray liquid face peak value shortcoming bigger than normal little and that radially distribute.

Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.

Description of drawings

Fig. 1 is the structural representation of the utility model gas-liquid allotter

Fig. 2 is the structural representation of circle bubble cap spiral bar seam

Fig. 3 is the structural representation of destroyer

The specific embodiment

As depicted in figs. 1 and 2, this gas-liquid allotter comprises members such as round bubble cap 1, central tube 2, connecting plate 3, destroyer 4, bolt 5 and nut 6, the central lines of circle bubble cap 1 and central tube 2, bolt 5 passes the perforate of round bubble cap 1 and connecting plate 3 top center, employing nut 6 will justify bubble cap 1 with bolt 5 and connecting plate 3 is fastenedly connected, connecting plate 3 is a trough plate, the top of connecting plate 3 lower ends and central tube 2 is the solder joint structure, destroyer 4 is in the lower end of central tube 2, and the bottom of central tube 2 is installed in the perforate of distribution plate 11.Bar seam 7 on the circle bubble cap 1 is helical structures; And destroyer 4 centers have a round center hole 8, and many radial seam 9 arranged on destroyer 4 simultaneously.

As shown in figures 1 and 3, the gusset 10 that has the 3-4 root to link to each other on the destroyer 4 of described gas-liquid allotter with the horn-like enlarging of central tube 2 lower ends, gusset 10 is the solder joint structure with central tube 2 lower ends.

The course of work of the utility model gas-liquid allotter such as Fig. 1, Fig. 2 and shown in Figure 3: gas-liquid two-phase fluid flows downward from distribution plate 11 tops, liquid is built up on distribution plate 11 and is formed liquid level, when the lower edge of liquid level above circle bubble cap 1, gas-liquid allotter begins operate as normal.Gas is from spiral bar seam 7, and the space by between flute profile connecting plate 3 and the central tube 2 enters central tube 2.Because the throttling action of spiral bar seam 7, gas flow rate increases, and the violent interaction of liquid generation to circle bubble cap 1 inboard makes liquid atomize, and enters central tube 2 jointly with gas.Because the special construction of spiral bar seam 7, the feasible gas that passes through and the liquid of atomizing have certain spinning momentum, still keep sizable spinning momentum after entering central tube 2, the liquid that this spinning momentum will accumulate in central tube 2 centers moves near central tube 2 inwalls under action of centrifugal force, help to increase export distributor spray liquid face, thereby reduce the peak value that liquid radially distributes, the distribution performance that improves distributor is benefited.The mixture of gas-liquid two-phase is subjected to the further distribution of destroyer 4 in the exit of central tube 2, be assigned to the export distributor cross section more uniformly.

The utility model is by improving structural design, adopt the round bubble cap 1 of spirality bar seam 9 and the destroyer of center drilling, can reduce the gas-liquid allotter pressure drop, improve the operating flexibility performance, particularly improve existing export distributor spray liquid face peak value shortcoming bigger than normal little and that radially distribute.

Claims

1, a kind of gas-liquid allotter, comprise round bubble cap (1), central tube (2), connecting plate (3), destroyer (4), bolt (5) and nut (6), the central lines of circle bubble cap (1) and central tube (2), bolt (5) passes the perforate of round bubble cap (1) and connecting plate (3) top center, employing nut (6) will justify bubble cap (1) with bolt (5) and connecting plate (3) is fastenedly connected, connecting plate (3) is a trough plate, the top of connecting plate (3) lower end and central tube (2) is the solder joint structure, destroyer (4) is in the lower end of central tube (2), the bottom of central tube (2) is installed in the perforate of distribution plate (11), it is characterized in that the bar seam (7) on the circle bubble cap (1) is a helical structure; And destroyer (4) center has a round center hole (8), and many radial seam (9) arranged on destroyer (4) simultaneously.

2, gas-liquid allotter according to claim 1 is characterized in that the gusset (10) that has the 3-4 root to link to each other with the horn-like enlarging of central tube lower end on the described destroyer (4), and gusset (10) is the solder joint structure with central tube (2) lower end.