CN211133860U

CN211133860U - Low density oil base mud is retrieved separation and is used heating cauldron

Info

Publication number: CN211133860U
Application number: CN201921402447.6U
Authority: CN
Inventors: 张占山; 张宇; 张虎; 黎楠
Original assignee: Hebei Diyun Chemical Technology Co ltd
Current assignee: Hebei Diyun Chemical Technology Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-07-31
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a separation is retrieved with heating cauldron to low density oil base mud relates to mixture separation recovery plant technical field, including horizontal structure's casing, agitator, the filter equipment who is linked together with the casing that sets up in the casing top, be provided with the oil pipe that leads that supplies the conduction oil circulation in the casing wall face, be provided with feed inlet and gas outlet on the wall of casing upper portion, be provided with the discharge gate on the wall of casing lower part, the agitator is including stirring pivot, the epaxial blade of setting at the inside multiunit of casing of fixed connection in the stirring. The utility model discloses sturdy structure is reliable, easy operation, is convenient for realize low temperature thermal desorption, has improved heating efficiency, has increased the handling capacity, has improved equipment stability, increase of service life.

Description

Low density oil base mud is retrieved separation and is used heating cauldron

Technical Field

The utility model belongs to the technical field of mixture separation recovery plant technique and specifically relates to an oil base mixture separation recovery unit.

Background

The oil-based mud is also called oil-based drilling fluid, is beneficial to well wall stability, has good lubricity and causes little damage to oil and gas layers. With the continuous development of the petroleum industry, the exploration and development of deep wells and ultra-deep wells are increased day by day, and the oil-based mud is widely used in the drilling engineering day by day.

In the process of drilling by using the oil-based mud, a large amount of waste oil-based mud is generated, wherein the waste oil-based mud mainly comprises a solid phase, an oil phase and a water phase, the solid phase mainly comes from crushed rock debris, mud additives, stones in the transportation process and other impurities, and the oil phase mainly comprises diesel oil, white oil, biological oil, mineral oil and the like. Part of the oil-based mud in the waste oil-based mud and the oil-based mud adsorbed on the solid phase surface are important resources, and if the oil-based mud cannot be effectively recycled, the oil-based mud has serious influence on the regional environment and causes serious resource waste. The low-density oil-based mud contains less oil-based mud, the recovery efficiency is low, the recovery cost is high, and the problem of continuous pollution to the regional environment is solved.

At present, two types of equipment for recovering and treating waste oil-based mud generated by well drilling mainly comprise a thermal fractionation device and a centrifugal solid-liquid separation device, the centrifugal solid-liquid separation device cannot reduce the content of base oil in a separated solid phase to be within 3 percent, the reaction is insufficient, part of the base oil is still attached to the solid phase, and the residual is excessive, so that the environmental pollution and the resource waste are caused; however, the existing thermal fractionation equipment has poor heating effect, long reaction time, high energy consumption, complex equipment, unstable stirring, limited effective utilization area, too low efficiency, incapability of treating waste and polluted low-density oil-based mud, discontinuous production and the like, is not beneficial to large-scale continuous treatment, and does not effectively treat the discharged waste gas. Meanwhile, the treatment capacity of the existing thermal fractionation equipment is smaller than the designed treatment capacity, the process needs to be further improved, the treatment capacity is increased, the operation efficiency is improved, and the economical efficiency of the process technology is improved. There is no suitable method and apparatus for separating and recovering other kinds of sludge. The prior equipment adopts a far infrared heating technology, and a heating module and elements are easy to damage due to high energy consumption.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve provides a separation is retrieved with heating cauldron to low density oil base mud, and sturdy structure is reliable, and easy operation is convenient for realize low temperature thermal desorption, improves heating efficiency, increases the handling capacity, improve equipment stability, increase of service life.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a separation is retrieved with heating cauldron to low density oil base mud, includes horizontal structure's casing, agitator, sets up the filter equipment who is linked together with the casing in the casing top, is provided with the oil pipe that leads that supplies the conduction oil circulation in the casing wall face, is provided with feed inlet and gas outlet on the casing upper portion wall, is provided with the discharge gate on the casing lower part wall, and the agitator includes stirring pivot, the setting of fixed connection in the epaxial multiunit blade of casing inside.

The utility model discloses technical scheme's further improvement lies in: the shell is a horizontal barrel-shaped tank body, the feed inlet and the gas outlet are arranged at the top of the shell, and the discharge outlet is arranged at the bottom of the shell; two discharge ports are arranged and are respectively positioned at two ends of the bottom of the shell.

The utility model discloses technical scheme's further improvement lies in: the oil guide pipes comprise horizontal oil guide pipes and vertical oil guide pipes, and the horizontal oil guide pipes and the vertical oil guide pipes are mutually crossed.

The utility model discloses technical scheme's further improvement lies in: stirring pivot level sets up, and stirring pivot one end stretches out outside the casing, and the stirring pivot is connected with agitator motor through transmission.

The utility model discloses technical scheme's further improvement lies in: the longitudinal oil guide pipes and the blades are arranged in a staggered mode.

The utility model discloses technical scheme's further improvement lies in: the filtering device comprises a filter screen.

The utility model discloses technical scheme's further improvement lies in: and a certain angle is arranged between the surface of the blade and the stirring rotating shaft.

The utility model discloses technical scheme's further improvement lies in: the middle shaft of the blade is vertical to the stirring rotating shaft.

Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:

the utility model discloses be favorable to the double-phase abundant separation of solid-liquid in the waste oil base mud, sturdy and reliable structure, easy operation is convenient for realize low temperature thermal desorption, reduces the cost of recovery, has improved heating efficiency, has increased the handling capacity, has improved equipment stability, and increase of service life has avoided the production of processing procedure harmful substance, is convenient for realize innocent treatment and the resource reuse to low density oil base mud.

The casing adopts horizontal structure, and is sturdy and durable, and the damage that the prevention is inside to be heated and is caused has increased the volume, has improved the efficiency of handling.

Stirring is carried out while heating, so that the problem of unstable stirring is solved. The heat conduction oil is selected for heat transfer, so that the heat transfer efficiency is improved. By adopting the structure of the oil guide pipe, the effective utilization area is increased, the yield is improved, the energy consumption is reduced, the preheating time is short, the reaction efficiency is high, the thermal desorption reaction is sufficient, and the separation and recovery of the low-density oil-based mud are thoroughly realized. Due to the full reaction, the use of a catalyst is avoided, secondary pollution is prevented, the use of an inert gas atmosphere is avoided, and the treatment cost is reduced.

The arrangement of the transverse oil guide pipe and the longitudinal oil guide pipe enables all parts to conduct heat uniformly, and local overheating on the shell is avoided. The discharge gate is located the length direction's of the bottom of casing both ends respectively and is convenient for retrieve the solid waste material in the oil base mud from arbitrary discharge gate, has simplified the recovery process, has improved recovery efficiency. The utility model discloses an evacuating device makes the inside decompression state that is in of whole separation recovery unit, and effectual reduction boiling point improves thermal desorption reaction's efficiency, reduces the treatment cost.

The plane where the longitudinal oil guide pipe is located and the plane where the blades are located are arranged in a staggered mode, so that the uniform heating in the horizontal direction is guaranteed, the shell material is fully utilized, the problem that the pipeline part and the blades in the shell are mutually influenced in the same vertical plane to cause stress concentration is solved, and the firmness degree is increased. The utility model discloses with the filter screen, simple structure, the filter effect is good, is convenient for select the specification in order to filter different filter conditions.

The blade and the stirring rotating shaft are provided with a certain angle, so that the oil-based mud can be pushed to the left or the right in an oriented mode, the oil-based mud is prevented from remaining in the middle of the shell and cannot be moved to the discharge hole, and the recovery of solid thermal desorption products is facilitated.

Drawings

FIG. 1 is a schematic sectional structure of the present invention;

FIG. 2 is a schematic sectional structure view of the side wall of the present invention;

fig. 3 is a schematic top view of the present invention;

the device comprises a shell 1, a shell 2, an oil guide pipe 2a, a transverse oil guide pipe 2b, a longitudinal oil guide pipe 3, a stirrer 3a, blades 3b, a stirring rotating shaft 4, a feeding hole 5, a discharging hole 6, a filtering device 6a, an automatic screen changing device 6b, a screw vacuum pump 7, an air outlet 8 and a stirring motor.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

as shown in fig. 1, 2 and 3, the heating kettle for recovering and separating the low-density oil-based mud comprises a shell 1 with a horizontal structure, a stirrer 3, a filtering device 6 and a vacuumizing device. The filtering device 6 is arranged above the shell 1, the filtering device 6 is communicated with the shell 1 through the feeding hole 4, and the vacuumizing device is communicated with the shell 1.

An oil guide pipe 2 for the circulation of heat conduction oil is arranged in the wall surface of the shell 1, a feed inlet 4 and an air outlet 7 are also arranged on the wall surface of the upper part of the shell 1, and a discharge outlet 5 is arranged on the wall surface of the lower part of the shell 1. The shell 1 is a horizontal barrel-shaped tank body, the feed inlet 4 and the air outlet 7 are arranged at the top of the shell 1, and the discharge outlet 5 is arranged at the bottom of the shell 1; the housing 1 is provided with two discharge ports 5 respectively located at both ends of the bottom of the housing 1 in the length direction.

The stirrer 3 comprises a stirring rotating shaft 3b and blades 3a, wherein the blades 3a are fixedly connected to the stirring rotating shaft 3b, and the blades 3a are arranged inside the shell 1 and are provided with a plurality of groups. Stirring pivot 3b level sets up, and 3b one end of stirring pivot stretches out outside casing 1, and stirring pivot 3b is connected with agitator motor 8 through transmission, and agitator motor 8 drives stirring pivot 3b, and transmission includes driving belt. The blades 3a are entirely disposed in the housing 1, and the stirring rotating shaft 3b is partially protruded outside the housing 1. A certain angle is arranged between the surface of the blade 3a and the stirring rotating shaft 3b, and the middle shaft of the blade 3a is vertical to the stirring rotating shaft 3 b.

The oil guide pipes 2 comprise horizontal oil guide pipes 2a arranged horizontally and vertical oil guide pipes 2b arranged vertically, and the horizontal oil guide pipes 2a and the vertical oil guide pipes 2b are crossed with each other to form a net-shaped distribution structure to surround the side wall of the whole shell 1. The plane where the longitudinal oil guide pipe 2b is located and the plane where the blades 3a are located are arranged in a staggered mode.

The filtering device 6 is located above the casing 1, and the filtering device 6 comprises two pipelines respectively communicated with the casing 1. The filtering device 6 comprises a filtering net, and the mesh number of the filtering net is 400-600 meshes.

The prior equipment adopts a far infrared heating technology, and a heating module and elements are easy to damage due to high energy consumption. And then, the heat conduction oil heating technology is determined to be used, the heat conduction oil heating energy consumption is reduced by one fourth compared with the far infrared heating energy consumption, the fluid heating is more uniform, and the effective heat exchange area is increased by matching with hollow stirring.

The existing equipment is that the oil-based mud is integrally placed in a shell 1, the oil-based mud moves left and right and downwards on a blade 3a, the moving direction of the oil-based mud is controlled by controlling the rotating direction of a stirring rotating shaft 3b driving the blade 3a to rotate, and the position of the oil-based mud is controlled by controlling the unidirectional rotating speed and time of the blade 3 a. After the thermal desorption reaction of the oil-based mud is sufficient, the oil-based mud is ensured to move to the discharge port 5 under the action of the blade 3a, then the machine is stopped for discharging, and the oil-based mud recovery and separation processing process is discontinuous.

Claims

1. The utility model provides a separation is retrieved with heating cauldron to low density oil base mud which characterized in that: the device comprises a shell (1) with a horizontal structure, a stirrer (3), a filtering device (6) which is arranged above the shell (1) and is communicated with the shell (1), and a vacuum-pumping device which is communicated with the shell (1), wherein an oil guide pipe (2) for heat conduction oil to circulate is arranged in the wall surface of the shell (1), a feed inlet (4) and an air outlet (7) are arranged on the wall surface of the upper part of the shell (1), a discharge outlet (5) is arranged on the wall surface of the lower part of the shell (1), and the stirrer (3) comprises a stirring rotating shaft (3 b) and a plurality of groups of blades (3 a) which are fixedly connected to the stirring rotating shaft (3 b) and are.

2. The heating still for recovering and separating low-density oil-based mud according to claim 1, wherein: the shell (1) is a horizontal barrel-shaped tank body, the feed inlet (4) and the air outlet (7) are arranged at the top of the shell (1), and the discharge outlet (5) is arranged at the bottom of the shell (1); two discharge holes (5) are arranged and are respectively positioned at two ends of the bottom of the shell (1).

3. The heating still for recovering and separating low-density oil-based mud according to claim 1, wherein: the oil guide pipe (2) comprises a horizontal oil guide pipe (2 a) and a vertical oil guide pipe (2 b), wherein the horizontal oil guide pipe (2 a) and the vertical oil guide pipe (2 b) are horizontally arranged, and the horizontal oil guide pipe (2 a) and the vertical oil guide pipe (2 b) are mutually crossed.

4. The heating still for recovering and separating low-density oil-based mud according to claim 1, wherein: stirring pivot (3 b) level sets up, and stirring pivot (3 b) one end stretches out outside casing (1), and stirring pivot (3 b) is connected with agitator motor (8) through transmission.

5. The heating still for recovering and separating low-density oil-based mud according to claim 3, wherein: the longitudinal oil guide pipes (2 b) and the blades (3 a) are arranged in a staggered mode.

6. The heating still for recovering and separating low-density oil-based mud according to claim 1, wherein: the filter device (6) comprises a filter screen.

7. The heating still for recovering and separating low-density oil-based mud according to claim 4, wherein: a certain angle is arranged between the surface of the blade (3 a) and the stirring rotating shaft (3 b).

8. The heating still for recovering and separating low-density oil-based mud according to claim 1, wherein: the middle shaft of the blade (3 a) is vertical to the stirring rotating shaft (3 b).