CN220047796U - Stirring mechanism for demulsifier - Google Patents

Abstract

The utility model relates to a stirring mechanism for a demulsifier, which comprises a tank body and a stirring piece; the tank body is divided into a plurality of concentric stirring areas by a plurality of isolation cylinders; the isolating cylinder is provided with a notch, and materials in a stirring area positioned at the central position in the stirring process flow to the stirring area of the outer ring through the notch; the stirring piece simultaneously stirs all stirring areas together. The beneficial effects achieved by the utility model are as follows: the operation is stable, the raw materials can be fully contacted and reacted, and the control of the reaction temperature is realized more accurately.

Description

Stirring mechanism for demulsifier

Technical Field

The utility model relates to a petroleum auxiliary technical field, especially a rabbling mechanism for demulsifier.

Background

In the petroleum exploitation process, if a water injection oil extraction mode is adopted, the water content of the produced liquid is high, so that dehydration is needed; because the water is emulsified, the water needs to be demulsified before being removed; the common demulsifier is a polymeric demulsifier, and the demulsification effect depends on the polymerization effect during the preparation of the demulsifier; and good polymerization effect is achieved, and certain requirements are made on the preparation process and equipment.

Many companies now use conventional stirred tanks in preparing demulsifiers. The working principle of the common stirring tank is as follows: stirring is achieved by a general circulating flow, turbulent motion. In particular, on the one hand, strong shear or turbulence is generated in the vicinity of the stirrer, creating a turbulent mixing zone; on the other hand, a high-speed jet is generated to push the liquid to circulate in the tank along a certain path, and the large-range flow is called overall movement. (the idea of a common stirring tank in the improvement process is to strengthen the turbulence intensity and the intensity of the overall movement of the fluid)

With the improvement of the performance index of the demulsifier, the common stirring tank preparation mode gradually fails to meet the requirements of the preparation process.

Based on the above, the preparation process of the demulsifier is improved on the basis of a common stirring tank according to the requirements of the company.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, provides a stirring mechanism for a demulsifier, and solves the problems of inaccurate temperature control and poor stirring effect.

In the aspect of temperature control of a common stirring tank: the temperature is usually controlled by heating and self-cooling the wall, or the temperature is controlled by introducing liquid with temperature into the wall; but the temperature at the center of the can is not well controlled.

It should be noted that, in the aspect of enhancing the stirring effect, the common stirring tank: generally, turbulent flow is enhanced, and the strength of lifting motion in the fluid is enhanced, so as to increase the contact times of raw materials in each unit time; the flow rate of the fluid is affected by the stirring speed and the shape of the stirring blade, and when the flow rate reaches a certain upper limit, the stirring effect is difficult to improve again.

The main temperature control condition, stirring effect aspect of this scheme carries out corresponding structural design to rabbling mechanism.

The aim of the utility model is achieved by the following technical scheme: a stirring mechanism for demulsifiers comprises a tank body and stirring pieces;

the tank body is divided into a plurality of concentric stirring areas by a plurality of isolation cylinders;

the isolating cylinder is provided with a notch, and materials in a stirring area positioned at the central position in the stirring process flow to the stirring area of the outer ring through the notch;

the stirring piece simultaneously stirs all stirring areas together.

In an advantageous embodiment, two isolation cylinders are coaxially arranged in the tank body, and the stirring area in the tank body is sequentially a central stirring area, a middle ring stirring area and an outer ring stirring area from the center to the outer ring;

a gap is formed in the wall of the isolation cylinder along the vertical direction;

in the stirring process, corresponding materials flow from the central stirring area to the middle ring stirring area and the external stirring area sequentially through the gaps under the action of centrifugal force.

In an advantageous embodiment, a liquid chamber is provided in the wall of the separating cylinder, in which liquid with temperature is provided; the liquid in the liquid cavity is communicated with a heating-cooling device outside the tank body through a pipeline; the temperature of the liquid is controlled by the heating-cooling device, so that the reaction temperature of the material in the tank body is controlled by the temperature of the liquid.

Further, the liquid cavities among the plurality of isolation cylinders are communicated through pipelines; the liquid cavity is formed along the wall of the whole isolation cylinder to form a cylinder cavity shape; the liquid cavity is divided into an inner liquid cavity and an outer liquid cavity by a cylindrical partition plate, and a gap is reserved between the partition plate and the top wall of the liquid cavity; the liquid in the outer liquid cavity flows into the inner liquid cavity through the corresponding gap.

In an advantageous embodiment, the stirring element has a central axis; a plurality of gate-shaped frames are arranged on the central shaft, and stirring arms are arranged at the ends of the gate-shaped frames; the plurality of gate-shaped frames correspond to the plurality of stirring areas, and the plurality of gate-shaped frames are arranged at the radial positions of the tank body in a staggered mode.

Further, the stirring arm comprises a rod piece and a blade; the rod piece is rectangular in section, and the plurality of blades are arranged on the rod piece through a rectangular cylinder and screws.

In an advantageous embodiment, a feed cylinder is arranged at the top of the tank body, and an auxiliary disk is arranged in the tank body; the auxiliary disc is provided with a plurality of material leakage openings near the center; the material drops to the auxiliary disc through the feed cylinder, and then drops to the stirring area at the central position through the material leakage opening.

When in operation, the device comprises:

s1, raw materials fall onto an auxiliary disc through a feeding cylinder, then fall into a central stirring area through a material leakage opening to be stirred at the position, which is close to the center, of the auxiliary disc (because the raw materials initially fall into the central stirring area, the raw materials can be fully contacted at the central area, so that full stirring reaction can be carried out at the central area, and compared with the traditional mode that the raw materials enter the whole tank body to be stirred again, the stirring effect of the scheme is better);

s2, after stirring and reacting in the central area, gradually typing the materials into the middle-ring stirring area from the notch under the action of centrifugal force, and then stirring and reacting in the middle-ring stirring area;

s3, under the action of centrifugal force, the materials in the middle ring stirring area enter the outer ring stirring area through the corresponding notch to be stirred and reacted.

By means of the steps S1-S3 during operation, it can be seen that: the material of this scheme stirs in central stirring region, middle ring stirring region, outer loop stirring region in proper order, stirs for three times, and every stirring region's volume is compared traditional material and is smaller at the volume that whole jar body flows, more does benefit to contact, the reaction between the raw materials.

In steps S1-S3, since each stirring zone has a corresponding isolation drum, the temperature of each stirring zone is controlled by controlling the temperature of the liquid in the liquid chamber in each isolation drum, which enables better control of the temperature of each stirring zone than conventional tank wall heating/cooling alone. ( Specifically, conventional stirred tanks are kept at low temperature, with the temperature being controlled by walls; however, the heat/cold transfer process is conducted from the wall to the center, and the raw material at the center is not easily cooled in time, so that the low-temperature control effect is not good. According to the scheme, the isolation cylinder is arranged in the tank body, the distance from the isolation cylinder to the corresponding stirring area is shorter, heat/cold transfer is facilitated, the temperature in the tank body can be better controlled, and therefore the temperature requirement in the demulsifier preparation process can be accurately controlled )

The utility model has the following advantages:

(1) The isolation cylinder is arranged to divide the tank body into a plurality of stirring areas, and each stirring area has small volume, so that the raw materials can be fully contacted, and the stirring effect is improved;

through forming a notch on the isolation cylinder, after stirring the materials in the stirring area at the central position, the materials automatically enter the position of the outer ring to be stirred under the action of centrifugal force, which is equivalent to the requirement of stirring the materials for a plurality of times in sequence; compared with the mode of stirring in one tank body at a time, the scheme is easier to lead the raw materials to fully contact and react;

(2) By arranging the liquid cavity in the isolation cylinder, the temperature of each stirring area in the tank body can be well controlled, and compared with the traditional mode of only controlling the temperature on the wall of the tank, the method has better temperature control on materials and is more beneficial to accurately controlling the temperature condition of the reaction;

(3) The upper end of the central shaft is stressed on one hand, and the plurality of mounting frames are arranged in a staggered manner in the radial direction on the other hand, so that the whole tank body of the stirring piece is not easy to shake in the rotating process, and the stability can be better kept;

(4) The design of auxiliary disc and feed cylinder has realized that the material falls in the internal central point of jar in comparison with traditional feeding mode.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the stirring member and the auxiliary disk;

FIG. 3 is a schematic structural view of an auxiliary disk;

FIG. 4 is a schematic structural view of an isolation cylinder;

FIG. 5 is a schematic view of the structure at the upper end of the isolation cylinder;

FIG. 6 is a schematic view of the structure under the isolation cylinder;

FIG. 7 is a schematic view of the connection of the fluid chambers between the isolation drums;

in the figure: 1-tank body, 2-stirring piece, 3-isolation cylinder, 201-liquid cavity, 30101-liquid inlet, 30102-liquid outlet, 302-notch, 4-stirring area, 5-baffle, 6-center shaft back, 7-gate frame, 8-stirring arm, 9-rod piece, 10-blade, 11-feeding cylinder, 12-auxiliary disk, 1201-material leakage port, 13-driving motor, 14-nut and 15-base.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following.

Example one

Because of the common stirred tank, there are basically the following conditions: when the raw materials are added into the tank body, the raw materials are easily gathered at the wall position of the tank body under the action of centrifugal force, the whole tank body has larger volume, and the probability of contact between the raw materials is small; the number of times per unit time can be increased only by increasing the flow rate. The scheme improves the reaction effect by increasing the contact probability.

As shown in fig. 1 and 7, a stirring mechanism for a demulsifier comprises a tank body 1 and a stirring piece 2; the tank body 1 is divided into a plurality of concentric stirring areas 4 by a plurality of isolation cylinders 3; the isolating cylinder 3 is provided with a notch 302, and the material in the stirring area 4 at the central position flows to the stirring area 4 of the outer ring through the notch 302 in the stirring process; furthermore, the stirring element 2 simultaneously stirs all stirring areas 4 together.

The material is first stirred in the central stirring zone 4 and then gradually diffuses outwards through the gap 302 under the influence of centrifugal force, and then stirring is carried out. Because each stirring zone 4 is small in volume, the probability of contact between the raw materials is increased.

In this embodiment, two isolation cylinders 3 are coaxially disposed in the tank 1, and a stirring area 4 in the tank 1 is sequentially a central stirring area, a middle ring stirring area and an outer ring stirring area from the center to the outer ring. And a notch 302 is opened in the vertical direction on the wall of the isolation cylinder 3. During the stirring process, the corresponding materials sequentially flow from the central stirring area to the middle ring stirring area and the external stirring area through the notch 302 under the action of centrifugal force.

Example two

When preparing the demulsifier, the initiator and the catalyst are added at normal temperature, then the demulsifier is heated, and then other raw materials are added. However, in a general stirring tank, since heating/temperature control is performed by a wall, the wall is far from the central position of the stirring tank, and the raw material in the central position is not easily heated; some of the starting materials are already reacted without being in the proper temperature range.

In order to better transfer heat/cold, control reaction temperature and control preparation process conditions, a corresponding design is also carried out on the basis of the first embodiment.

Specifically, as shown in fig. 4 to 6, a liquid chamber 301 is formed in the wall of the isolation cylinder 3, and a liquid having a temperature is filled in the liquid chamber 301; the liquid in the liquid chamber 301 is communicated with a heating-cooling device outside the tank 1 via a pipe. In operation, the temperature of the liquid is controlled by the heating-cooling device, so that the reaction temperature of the materials in the tank body 1 is controlled by the temperature of the liquid. ( The heating-cooling device is a device capable of heating and cooling liquid and also has a function of controlling the temperature of the liquid, which is easily realized by a person skilled in the art and is also available for direct acquisition by outsourcing; the scheme only takes the functions, and the specific structure is not repeated here )

In this embodiment, each isolation cylinder 3 is provided with a liquid inlet 30101 and a liquid outlet 30102 which are communicated with the corresponding liquid cavity 301. The liquid cavities 301 of adjacent isolation drums 3 are connected with corresponding liquid inlets 30101 and liquid outlets 30102 through pipelines, so that the liquid cavities 301 of each adjacent isolation drum 3 are communicated; and then connected to the heating-cooling device through a pipe passing through the wall of the tank 1, forming a circulation of the liquid flowing in the liquid chamber 301. (A liquid chamber 301 is also formed in the wall of the tank 1. The liquid chamber 301 alone forms another liquid flow circulation path with the heating-cooling device)

For liquid chamber 301: which is arranged along the wall of the tank body 1 and forms a cylinder cavity shape; a baffle plate 5 is arranged in the liquid cavity 301, and the baffle plate 5 divides the liquid cavity 301 into an inner liquid cavity and an outer liquid cavity; while the lower end of the partition 5 is in contact with the bottom wall of the liquid chamber 301, while the upper end of the partition 5 is also in clearance with the top wall of the liquid chamber 301. And the liquid inlet 30101 and the liquid outlet 30102 are respectively and correspondingly connected with the inner liquid cavity and the outer liquid cavity.

Example III

For this purpose, the stirring element 2 is designed on the basis of the first and second embodiments for the stability of the stirring element 2 during stirring.

Specifically, as shown in fig. 2 and 7, the stirring bar 2 has a central shaft 6, a plurality of gate frames 7 are mounted on the central shaft 6, stirring arms 8 are mounted at the ends of the gate frames 7, and the plurality of gate frames 7 correspond to the plurality of stirring areas 4.

In this embodiment, the plurality of gate frames 7 are arranged in a staggered manner in the radial direction of the tank 1.

In the embodiment, the upper end of the central shaft 6 passes through the tank body 1 and then is connected with the driving motor 13, and the lower end of the central shaft is rotatably propped against the inner bottom of the tank body 1; the door-shaped frame 7 is locked with the central shaft 6 through corresponding nuts 14 after being matched with the central shaft through threads. The bottom of the tank body 1 is provided with a base 15, and the lower end of the central shaft 6 is arranged on the base 15 through a bearing.

In this embodiment, the stirring arm 8 comprises a rod 9 and a blade 10; the rod 9 is rectangular in cross section, and a plurality of blades 10 are mounted on the rod 9 through rectangular cylinders and screws.

(example IV)

In order to allow the raw material to fall into the stirring zone 4 at the central position, the feeding point was designed on the basis of the first, second and third embodiments.

Specifically, as shown in fig. 2 and 3, a feeding cylinder 11 is arranged at the top of the tank 1, and an auxiliary disc 12 is arranged in the tank 1; the auxiliary disc 12 is provided with a plurality of material leakage openings 1201 near the center; the material falls onto the auxiliary disk 12 through the feed cylinder 11 and then into the centrally located stirring zone 4 through the weep hole 1201.

In this embodiment, a concave groove is disposed near the center of the auxiliary disk 12, and a material leakage hole 1201 is disposed at the bottom of the concave groove. When the material is in the auxiliary tray 12, it will collect in the concave trough and then drop down through the spout 1201 (the stirring zone 4 just in the center below the spout 1201).

Of course, a discharge cylinder is arranged below the tank body 1 in the stirring area of the outermost ring.

(example five)

As shown in fig. 1, the tank 1 is designed, and the tank 1 is divided into an upper tank and a lower tank, wherein the upper tank is connected with the lower tank in a sealing way through bolts and sealing rings. Such a design facilitates the installation of the various structural components within the tank 1.

The foregoing examples represent only preferred embodiments, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that variations and modifications can be made by those skilled in the art without departing from the spirit of the utility model, which falls within the scope of the utility model.

Claims (7)

1. A rabbling mechanism for demulsifier, includes jar body (1), stirring piece (2), its characterized in that:

the tank body (1) is divided into a plurality of concentric stirring areas (4) by a plurality of isolation cylinders (3);

a gap (302) is formed in the isolation cylinder (3), and materials in the stirring area (4) at the central position flow to the stirring area (4) of the outer ring through the gap (302) in the stirring process;

the stirring element (2) simultaneously stirs all stirring areas (4) together.

2. The stirring mechanism for demulsifiers as claimed in claim 1, wherein: two isolation cylinders (3) are coaxially arranged in the tank body (1), and a stirring area (4) in the tank body (1) is sequentially a central stirring area, a middle-ring stirring local area and an outer-ring stirring local area from the center to the outer ring;

a gap (302) is formed in the wall of the isolation cylinder (3) along the vertical direction;

in the stirring process, corresponding materials sequentially flow from the central stirring area to the middle ring stirring area and the external stirring area through the gaps (302) under the action of centrifugal force.

3. The stirring mechanism for demulsifiers as claimed in claim 1, wherein: a liquid cavity (301) is formed in the wall of the isolation cylinder (3), and liquid with temperature is filled in the liquid cavity (301);

the liquid in the liquid cavity (301) is communicated with a heating-cooling device outside the tank body (1) through a pipeline;

the temperature of the liquid is controlled by the heating-cooling device, so that the reaction temperature of the materials in the tank body (1) is controlled by the temperature of the liquid.

4. A stirring mechanism for demulsifiers as claimed in claim 3, wherein: the liquid cavities (301) among the plurality of isolation drums (3) are communicated through pipelines;

the liquid cavity (301) is formed along the wall of the whole isolation cylinder (3) to form a cylinder cavity shape;

the liquid cavity (301) is divided into an inner liquid cavity and an outer liquid cavity by a cylindrical partition plate (5), and a gap is reserved between the partition plate (5) and the top wall of the liquid cavity (301);

the liquid in the outer liquid cavity flows into the inner liquid cavity through the corresponding gap.

5. The stirring mechanism for demulsifiers as claimed in claim 1, wherein: the stirring piece (2) is provided with a central shaft (6);

a plurality of gate-shaped frames (7) are arranged on the central shaft (6), and a stirring arm (8) is arranged at the end of each gate-shaped frame (7);

the plurality of gate-shaped frames (7) correspond to the plurality of stirring areas (4), and the plurality of gate-shaped frames (7) are arranged in a staggered mode at the radial position of the tank body (1).

6. The stirring mechanism for demulsifiers as set forth in claim 5, wherein: the stirring arm (8) comprises a rod piece (9) and a blade (10);

the rod piece (9) is rectangular in section, and the plurality of blades (10) are arranged on the rod piece (9) through a rectangular cylinder and screws.

7. The stirring mechanism for demulsifiers as claimed in claim 1, wherein: a feeding cylinder (11) is arranged at the top of the tank body (1), and an auxiliary disc (12) is arranged in the tank body (1);

the auxiliary disc (12) is provided with a plurality of material leakage openings (1201) near the center;

the material falls onto the auxiliary disc (12) through the feeding cylinder (11), and then falls into the stirring area (4) at the central position through the material leakage opening (1201).