CN201493097U

CN201493097U - Spiral grooved gas-liquid distributor

Info

Publication number: CN201493097U
Application number: CN2009202277687U
Authority: CN
Inventors: 杜治海; 文志宏; 叶佳
Original assignee: HUBEI QIAOGUANG PETROCHEMICAL MACHINERY CO Ltd
Current assignee: HUBEI QIAOGUANG PETROCHEMICAL MACHINERY CO Ltd
Priority date: 2009-08-31
Filing date: 2009-08-31
Publication date: 2010-06-02
Anticipated expiration: 2019-08-31

Abstract

The utility model discloses a spiral grooved gas-liquid distributor, which comprises a bubble cap, wherein the bottom of the bubble cap is evenly provided with a plurality of spiral tooth joints; the bubble cap is internally provided with a center tube coaxial with the bubble cap; bubble supports are evenly and annularly arranged at the top of the center tube; auxiliary positioning plates of the bubble cap are evenly and annularly arranged at the middle part of the center tube; a lug boss is arranged at the lower part of the center tube; a bayonet is arranged at the bottom end of the center tube; a camping plate is clamped in the bayonet; a fixed pull rod is arranged at the top of the clamping plate; a stream breaker with a plurality of stream breaking holes is arranged at the bottom of the clamping plate; and the fixed pull rod passes through the center tube and a round hole at the top end of the bubble cap and is fixedly connected by a nut screwed with the upper end of the fixed pull rod. The utility model has the characteristics of simple structure, good distribution effect and the like; the gas-liquid distributor is additionally arranged in a reactor, gas phase and liquid phase cannot generate a center stream after passing through the distributor; the radial peak value has small deviation and the liquid phase can be evenly distributed on the section of the whole reactor, the phenomena of local overheat and coking of a catalyst bed layer caused by uneven distribution of mixed materials can be avoided, and thereby the quality of reacting products can be ensured.

Description

The helicla flute gas-liquid allotter

Technical field

The utility model relates to a kind of petroleum refining equipment, especially relates to a kind of helicla flute gas-liquid allotter.

Background technology

At present in petroleum chemical industry, for yield and the product quality that improves light oil, often need the product of crude oil fractions gained is carried out catalytic hydrogenation (for example hydrocracking and hydrofinishing), further refine, in reactor, its fluid distribution performance directly influences the uniformity of the time of contact of reactant and catalyst, influence the catalyst surfaces externally and internally by the wetting degree of liquid, and uneven can the formation of fluid distribution colluded stream and short circuit, finally can influence the temperature of bed, cause the local overheating of catalysis agent bed and coking and shorten the service life of the catalyst of knowing clearly and reduced the quality of product.Present reactor, that extensively adopts is the gas-liquid two-phase medium and flows to material, after gas-fluid two-phase mixture enters from the inlet diffuser of reactor inlet, by the gas-liquid distribution plate that is installed in the diffuser below gas-fluid two-phase mixture charging is sprayed onto equably the surface of below beds again, to bring into play the catalytic action of whole bed, avoid the local overheating and the coking of beds, thereby guarantee the quality of product, therefore, can reactor steady operation, can catalyst play a role fully, and can product reach quality requirement and depend on the gas-liquid distribution plate to a great extent.And along with the expansion of industry size, the scale of reactor is also increasing, and is also more and more higher to the specification requirement of gas-liquid distribution plate.And play a crucial role on the gas-liquid distribution plate be arranged on gas-liquid allotter on the plate, the performance of distributor can be weighed from pressure drop, liquid phase spray area, liquid phase peak value radially, its pressure drop is more little, and the liquid phase spray area is big more, more little its performance of liquid phase peak deviation radially is just good more.

The patent No. is that the utility model patent of ZL200420115970.8 discloses a kind of drawing-in type distributor, this distributor bubble emits the top to be provided with spinning disk, gas-liquid mixed liquid is impacted on the spinning disk produce eddy flow, the impact of rotary fluid phase factor centrifugal action and gas phase and be broken for drop, realize through stream breaker again distributing, avoid the generation of center stream,, exist baroque shortcoming though this utility model has reduced center stream to a certain extent.

The patent No. is that the utility model patent of ZL98250778.x discloses a kind of gas-liquid allotter, its pressure drop performance and behaviour all make moderate progress than overflow type and suction type with elasticity, but because partially liq is to enter central tube by spout hole, this part liquid is handled without atomizing, distribution performance to distributor has bigger influence, has therefore strengthened the radial distribution peak deviation.

Summary of the invention

The utility model mainly is technical problems such as the existing gas-liquid allotter complex structure of solution, liquid phase allotment area are little, and the radial distribution peak deviation is big.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: this helicla flute gas-liquid allotter comprises bubble cap, the center on the top of described bubble cap is provided with circular hole, its bottom is provided with several spiral slots equably, be provided with the central tube coaxial in the bubble cap with it, the top of this central tube is equipped with bubble cap equably and supports, the middle part is equipped with bubble cap assist location plate equably, its underpart is provided with boss, the bottom is provided with bayonet socket, card has clamp in the described bayonet socket, the top of clamp is provided with steady brace, the bottom of clamp is provided with the stream breaker with a plurality of broken discharge orifices, and described steady brace passes the circular hole on central tube and bubble cap top, and the nut that screws togather by its upper end is connected and fixed.

As preferably, described broken discharge orifice is bar hole or circular port.

As preferably, described slot number is 3～8.

As preferably, the number that described bubble cap supports is 2～6.

As preferably, the number of described bubble cap assist location plate is 2～6.

Therefore, the utility model is simple in structure, characteristics such as distribution effects is good, it is installed in the reactor, and gas-liquid two-phase can not flow at the generation center by behind this distributor, and radially peak deviation is little for it, liquid phase can be evenly distributed on the cross section of whole reactor, has avoided because the skewness of mixed material causes the local overheating and the coking of beds, thereby has guaranteed the quality of product.

Description of drawings

Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in further detail.

Fig. 1 is the structural representation of a kind of preferred implementation of the utility model;

Fig. 2 is that the A of slot shown in Figure 1 is to view;

Fig. 3 is the vertical view of embodiment distributor shown in Figure 1;

Fig. 4 is the vertical view of a kind of concrete enforcement structure of stream breaker shown in Figure 1;

Fig. 5 is the another kind of concrete vertical view of implementing structure of stream breaker shown in Figure 1.

The specific embodiment

Fig. 1 is the structural representation of a kind of preferred implementation of the utility model, and as seen from the figure, the utility model mainly is made up of bubble cap 2, central tube 3, bubble cap support 8, clamp 4, steady brace 7, stream breaker 5, bubble cap assist location plate 9 etc.

Center on the top of bubble cap 2 is provided with circular hole, and the bubble cap bottom is equipped with a plurality of (3～8) spiral slots 20 (shape of slot is referring to Fig. 2) equably, is provided with the central tube coaxial with it 3 in the bubble cap 2.By Fig. 3 further as can be known, be welded with a plurality of (2～6) bubble cap equably around central tube 3 on the top exterior walls of central tube 3 and support 8, be welded with a plurality of (2～6) bubble cap assist location plate 9 equably around central tube 3 on the outer wall of middle part.Be provided with boss 31 in the bottom of central tube 3, boss 31 bottom surfaces ride on the plate 1, the bottom of described central tube 3 is provided with two bayonet sockets 30 symmetrically, card has clamp 4 in this bayonet socket 30, be fixed with steady brace 7 on the clamp 4, described steady brace 7 passes the circular hole on central tube 3 and bubble cap 2 tops, and the nut 6 that screws togather by its upper end is connected and fixed, the below of described central tube outlet is provided with stream breaker 5, this stream breaker 5 is fixed on the bottom of clamp 4, stream breaker 5 is provided with broken discharge orifice 50, and the shape of broken discharge orifice can be circular or bar shaped shown in Figure 5 shown in Figure 4.

Slot on the bubble cap 2 20 is made as spirality, not only can for the gas-liquid two-phase medium provide can be big action space, simultaneously under the identical situation of slot height, the spirality seam can provide bigger gas passage, increased the carrying capacity of liquid, so atomizing effect is better than the linear slot, improved the distribution performance of distributor, and, adopt the spirality slot, after the gas-liquid two-phase medium enters distributor, produce rotate effect, make medium have bigger spinning momentum, liquid is cracked under centrifugal force and gas percussion to be droplet, and partially liq is in the inwall rotation of centrifugal action lower edge central tube, effectively disperseed center stream, improved the distribution performance of distributor, so its allotment area is big, liquid phase radially distributes peak deviation little.

Claims

1. helicla flute gas-liquid allotter, comprise bubble cap, the center that it is characterized in that the top of described bubble cap is provided with circular hole, its bottom is provided with several spiral slots equably, be provided with the central tube coaxial in the bubble cap with it, the top of this central tube is equipped with bubble cap equably and supports, the middle part is equipped with bubble cap assist location plate equably, its underpart is provided with boss, and the bottom is provided with bayonet socket, and card has clamp in the described bayonet socket, the top of clamp is provided with steady brace, the bottom of clamp is provided with the stream breaker with a plurality of broken discharge orifices, and described steady brace passes the circular hole on central tube and bubble cap top, and the nut that screws togather by its upper end is connected and fixed.

2. a kind of helicla flute gas-liquid allotter according to claim 1 is characterized in that described broken discharge orifice is bar hole or circular port.

3. a kind of helicla flute gas-liquid allotter according to claim 1 is characterized in that described slot number is 3～8.

4. a kind of helicla flute gas-liquid allotter according to claim 1 is characterized in that the number that described bubble cap supports is 2～6.

5. a kind of helicla flute gas-liquid allotter according to claim 1, the number that it is characterized in that described bubble cap assist location plate is 2～6.