CN202506370U - Parallel flow gas-liquid distributor - Google Patents

Abstract

A parallel flow gas-liquid distributor is used in the petroleum refining and chemical industry. The distributor is formed by a central tube, an outer cover, an inside retaining plate and a flow broken plate. The lower portion of the central tube is installed on an opening hole of a disc plate, two long sides of the square central tube have different heights, the flow broken plate is arranged at the outlet at the bottom end of the central tube, and flow broken holes are arranged on the flow broken plate. The outer cover is arranged on the outside of the central tube, the bottom portion of the outer cover is opened, the inside retaining plate is arranged on the inside the outer cover, and bar-type holes in different sizes are arranged on two long sides of the outer cover. The gas-liquid distributor is simple in structure, capable of evenly dispersing and pulverizing a liquid phase and capable of evenly distributing a gas phase and the liquid phase in a hydrogenation reactor bed to a catalyst bed.

Description

A kind of and gas liquid distributor

Technical field

The utility model relates to a kind of hydrogenation reactor inner member that is used for petroleum refining and chemical industry, the gas-liquid allotter that relates to the gas-liquid two-phase in a kind of hydrogenation reactor in particular and flow.

Background technology

The main effect of gas-liquid allotter is that the gas-liquid two-phase reaction mass is evenly distributed on beds, realizes contacting with the good of catalyst; Improve the flow regime of fluid, make fluid reach radial and axial even distribution, so that better bring into play the effect of catalyst.Therefore, can reactor steady operation, and can catalyst play one's part to the full, and can product reach the distribution effects that quality requirement depends on gas-liquid allotter to a great extent.

The performance of gas-liquid allotter can be weighed from pressure drop, liquid phase spray area, liquid phase peak value radially, and its pressure drop is more little, and the liquid phase spray area is bigger, liquid phase peak deviation radially is more little, and performance is just good more.Existing gas-liquid allotter can be divided three classes by the mode that liquid phase gets into: overflow type, suction type and the mixed type of the two.

The patent No. is that the utility model patent of CN2834690Y discloses a kind of overflow type gas-liquid allotter; Solved mainly that the peak value that liquid phase that existing gas-liquid allotter exists radially distributes is higher, the liquid phase spray area is little, overall presure drop big and cause the few problem of distribution plate spray point, but there is the problem of center stream in this distribution.

The patent No. is CN2600161Y; Utility model patent such as CN2757911 and CN200963585Y discloses a kind of suction type gas-liquid allotter; This kind distributor can make liquid phase disperseed better and atomize, and pressure drop is less, can make that the logistics of gas-liquid phase is able to be evenly distributed to beds in the hydrogenation reactor bed; Though this kind distributor has reduced center stream to a certain extent, there is baroque shortcoming.

The patent No. is the gas-liquid allotter that the utility model patent of CN98250778.X discloses a kind of suction type and overflow type combination; It is low that this kind distributor has pressure drop, distributes performance good, and operating flexibility is big; The characteristics that are fit to high viscosity medium, but the radial distribution peak deviation is bigger.

What China's application at present was more is the gas-liquid allotter of suction type; This kind distributor overall has good distributing uniformity; But local allocation is also inhomogeneous, causes liquid phase material can not be uniformly distributed on the catalyst bed layer cross section, has influenced sufficient reacting, has carried out uniformly.

The utility model content

The utility model mainly is the existing gas-liquid allotter complex structure of solution, has technical problems such as flow at the center, the liquid phase allotment area is little, the radial distribution peak deviation is big, operating flexibility is little.The gas-liquid allotter structure that the utility model provides is following: this distributor is made up of central tube 1, outer cover 2, interior panelling 3 and stream breaker 4.The bottom of this distributor central tube 1 is installed in the perforate of dish plate, and the side 7 and the side 8 of central tube 1 have different height, and central tube 1 is the equal opening in top and bottom of big rectangle flared tube pattern of top handle and central tube; Stream breaker 4 is installed in the lower end of central tube 1, offers broken discharge orifice 5 on the stream breaker 1, broken discharge orifice 5 be shaped as bar shaped or triangle; The outside of central tube 1 is provided with outer cover 2; The bottom opening of outer cover 2, outer cover 2 inside are provided with interior panelling 3, and interior panelling 3 is a vertical baffle; The baffle plate lower edge is straight shape or zigzag; Two long sides of outer cover 2 have the bar holes 6 and 6 of different sizes ', bar hole be shaped as rectangle or isoceles triangle and the big low height difference of dual-side bar hole.

The gas-liquid allotter that the utility model provides adopts strip structure, and is simple in structure, easily manufactured.The utility model increases the spray point of liquid phase through increasing the number of the bar hole of being opened on the distributor, thereby has reduced the peak value that single spray point place liquid phase distributes, and has improved the distribution of two phase gas-liquid materials at beds; Central tube adopts the big rectangle flared tube form of top handle, makes liquid phase have bigger allotment area; Outer cover set inside interior panelling, gas-liquid two-phase strike on the interior panelling and obtain further fragmentation, help the even distribution of gas-liquid two-phase more; The central tube outlet at bottom is provided with stream breaker, has effectively reduced the center flow phenomenon; The height of the size of two long side bar holes of outer cover, height and two long sides of central tube is different, has improved the operating flexibility of liquid phase.

Description of drawings

Fig. 1 a, Fig. 1 b are respectively the front view and the side views of the utility model gas-liquid allotter;

Fig. 2 a, Fig. 2 b are respectively that the baffle plate lower edge is the front view of straight shape and zigzag interior panelling;

Fig. 3 a, Fig. 3 b are respectively that broken discharge orifice is the vertical view of bar shaped and leg-of-mutton stream breaker.

Specific embodiments

The profile of the gas-liquid allotter that the utility model provided is bar shaped, and the inside of bar shaped distributor is provided with a baffle plate, the bottom opening of distributor; And be fixed on the column plate; The lower end is provided with stream breaker, and distributor central tube outside is provided with outer cover, the lower opening of outer cover; Its lower edge has certain height apart from column plate, and the side has a plurality of vertical bar holes.As preferably, the number of said bar hole is 1-5.

Below in conjunction with accompanying drawing the gas-liquid allotter that the utility model provides is further described: but therefore do not limit the utility model.

The gas-liquid allotter structure that the utility model provides is as shown in Figure 1: this distributor is made up of central tube 1, outer cover 2, interior panelling 3 and stream breaker 4.The bottom of central tube 1 is installed in the perforate of column plate, and its side 7 has different height with side 8; Stream breaker 4 is installed in the lower end of central tube, which is provided with broken discharge orifice 5; The outside of central tube is provided with outer cover 2; The bottom opening of outer cover 2, centre are provided with interior panelling 3, outer long side have the bar holes 6 and 6 of different sizes '; Wherein bigger bar hole 6 ' correspondence higher side 8, less bar hole 6 corresponding lower side 7.

The interior panelling lower edge that the utility model provides has various ways, and is as shown in Figure 2.Wherein the interior panelling lower edge shown in a is straight shape, and the interior panelling lower edge shown in the b is a zigzag.

The broken discharge orifice of the stream breaker that the utility model provides is used multiple shape, and is as shown in Figure 3.Wherein the broken discharge orifice shown in a is bar shaped, and the broken discharge orifice shown in the b is a triangle.

The gas-liquid allotter operation principle of the utility model design is following: gas phase is respectively through the bar hole 6 and 6 ' entering outer cover 2 of outer cover 2 and the slit between the central tube 1; The inside and outside differential pressure effect of gas-liquid allotter makes dish plate liquid phase got into the slit between outer cover 2 and the central tube 1 by the gas phase suction, is mixed together and arrives the top of central tube 1 with gas phase; Again mix behind the two fluid streams rising impingement baffles 3 at entering outer cover 2 tops, because of the expansion gradually of aisle spare, the allotment area of two phases also increases gradually subsequently, finally passes through the stream breaker 4 of central tube bottom, the uniform distribution of realization gas-liquid two-phase.Bar hole 6 and 6 ' big low height side 7 different and central tube highly different with side 8, make this distributor have bigger operating flexibility.

Claims (5)

1. gas-liquid allotter; It is characterized in that; This distributor is to be made up of central tube (1), outer cover (2), interior panelling (3) and stream breaker (4); The bottom of this gas-liquid allotter central tube (1) is installed in the perforate of dish plate, and the side (7) and the side (8) of central tube (1) have differing heights; The bottom outlet of central tube (1) is provided with stream breaker (4), offers broken discharge orifice (5) on the stream breaker (4); The outside of central tube (1) is provided with outer cover (2), the bottom opening of outer cover (2), and the inside of outer cover is provided with interior panelling (3), and two long sides of outer cover have bar hole (6) and (6 ') of different sizes.

2. gas-liquid allotter as claimed in claim 1 is characterized in that, described bar hole (6) and (6 ') be shaped as rectangle or isosceles triangle, the number of bar hole is 1-5, bar hole (6) is big or small with (6 ') different with highly.

3. gas-liquid allotter as claimed in claim 1 is characterized in that, described central tube (1) is the big rectangle flared tube structure of top handle, the equal opening in the top of central tube and bottom.

4. gas-liquid allotter as claimed in claim 1 is characterized in that, described interior panelling (3) is a vertical baffle, and the lower edge of vertical baffle is straight shape or zigzag.

5. gas-liquid allotter as claimed in claim 1 is characterized in that, described broken discharge orifice (5) is bar shaped or triangle.

Images