CN212502085U

CN212502085U - Sump oil tank

Info

Publication number: CN212502085U
Application number: CN202021184420.7U
Authority: CN
Inventors: 唐阿康; 李勇军; 陈建; 李根忠; 陈斌; 李志文
Original assignee: Hunan Mingchang New Energy Co ltd
Current assignee: Hunan Mingchang New Energy Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-09
Anticipated expiration: 2030-06-24

Abstract

The invention provides a sump oil tank which comprises a horizontal tank body and a flushing oil coil pipe. The flushing oil coil is arranged at the lower part in the horizontal tank body, one end of the flushing oil coil is closed, and the other end of the flushing oil coil penetrates through one side of the horizontal tank body and extends out of the horizontal tank body and is provided with a flushing oil inlet. A group of nozzles are arranged at the bottom of the flushing oil coil at equal intervals. The top of the horizontal tank body is provided with at least two dirty oil inlets, and the bottom of the horizontal tank body is provided with a dirty oil outlet. The dirty oil inlet is communicated with the oil slurry filter through a sewage pipeline. The tank body is horizontal, so that feeding on liquid can be ensured, and meanwhile, the equipment is convenient to install and maintain and has small investment. The flushing oil coil pipe is opened regularly, so that sediments at the bottom of the sump oil tank can be effectively stirred, the percentage content of catalyst particles, colloid and asphaltene in sump oil can be controlled, the washing influence of the catalyst particles in a sump oil medium on internal parts of the sump oil pump is reduced, and the stable operation of the sump oil pump is ensured.

Description

Sump oil tank

Technical Field

The invention relates to the field of petroleum refining equipment, in particular to a sump oil tank.

Background

The bottom oil slurry of the fractionating tower of the catalytic cracking unit for refining and processing petroleum contains high catalyst particles (about 2000 ppm-8000 ppm) and is a heavy oil product containing colloid and asphaltene; the content of catalyst particles in the catalytic slurry oil is reduced to a required range through a slurry oil filtering device, and the filtered catalytic slurry oil can be used as a production raw material for blending heavy fuel oil, needle coke and carbon fiber.

The sump oil tank is the main equipment of the oil slurry filtering device, and the catalytic oil slurry filtering system has the operating temperature of about 160-350 ℃, contains catalyst particles, colloid and asphaltene and is characterized by high temperature, easy flushing, easy blockage and the like; because the oil slurry filter of the oil slurry filtering device adopts an interception filtering technology, the sump oil tank mainly receives catalytic oil slurry filter residues and immersion oil which are discharged in the process of backwashing the oil slurry filter at regular intervals and immersing, and sump oil which is discharged from various sump oil discharging points of a sampling system of the oil slurry filtering device and the like.

Because the catalytic slurry oil contains catalyst particles, colloid and asphaltene, the content of the catalyst particles, the colloid and the asphaltene in the filter residue medium of the catalytic slurry oil discharged in the process of regularly backwashing and soaking the slurry oil filter is higher, so that the part with high flow speed of a sewage pipeline between a sewage outlet of the slurry oil filter and a dirty oil inlet of a dirty oil tank is easily washed away, the part with low flow speed and the part with a flowing dead zone cause the deposition of the mixture of the colloid, the asphaltene and the catalyst particles, and finally the unsmooth and blockage of sewage discharge of the sewage pipeline is caused along with the lapse of the running time, thereby seriously influencing the long-period running of the slurry oil filtering device.

The prior art sump oil tank has the following disadvantages:

1) the vertical type is adopted: the skirt is arranged on the vertical sump oil tank, so that although the floor area is small and the requirement on the effective cavitation allowance of the sump oil pump in operation can be met, if the sump oil inlet of the vertical sump oil tank is used for feeding under liquid after the sump oil tank stores liquid, because the feeding under liquid can cause obstruction to the sewage discharge of an oil slurry filter, the deposition speed of the mixture of colloid, asphaltene and catalyst particles at the part with slow flow rate and the part with a flowing dead zone of a sewage discharge pipeline is accelerated, and the normal operation of the oil slurry filter device is influenced; if the vertical type pollution discharge storage tank adopts the liquid feeding, the installation height of the slurry oil filter is required to be greatly increased, and the equipment frame arranged for equipment installation and maintenance is greatly increased, so that the equipment investment is increased, and the vertical type pollution discharge storage tank is not the optimal selection scheme from the consideration of engineering economy.

2) The catalytic slurry filter residue and other dirty oil entering the dirty oil tank are very easy to deposit at the bottom of the dirty oil tank due to the mixture of catalyst particles, colloid and asphaltene with higher content, and once the mixture is piled into a mass to enter the dirty oil pump for sewage discharge, the abrasion of internal components of the dirty oil pump is aggravated, and the internal components of the dirty oil pump can be damaged under severe conditions, so that the dirty oil pump is stopped to stop operation, and the production of the slurry filter device is influenced.

Disclosure of Invention

In view of the above, it is necessary to provide a sump oil tank which uses a horizontal tank body, can ensure that a sewage line of an oil slurry filter feeds the sump oil tank on liquid (i.e., a sump oil inlet is positioned above the liquid in the sump oil tank), can periodically flush sediments at the bottom of the sump oil tank, and can ensure stable operation of the sump oil pump, in order to solve the problems in the background art.

A slop oil tank comprises a horizontal tank body and a flushing oil coil pipe. The flushing oil coil is arranged at the lower part in the horizontal tank body, one end of the flushing oil coil is closed, and the other end of the flushing oil coil penetrates through one side of the horizontal tank body and extends out of the horizontal tank body and is provided with a flushing oil inlet. A group of nozzles are arranged at the bottom of the flushing oil coil at equal intervals. The top of the horizontal tank body is provided with at least two dirty oil inlets. The bottom of the horizontal tank body is provided with a sump oil outlet. The dirty oil inlet is communicated with the oil slurry filter through a sewage pipeline.

In one embodiment, the tube spacing of the flushing oil coil is uniformly arranged.

In one embodiment, the top of the horizontal tank body is provided with an instrument detection port and an inspection manhole.

In one embodiment, the bottom of the horizontal tank body is provided with a sump oil tank support.

In one embodiment, a dirty oil inlet corresponds to a drain line and a slurry filter.

In one embodiment, all of the trapways are stepped down.

In one embodiment, the number of dirty oil inlets is 3.

In one embodiment, the horizontal tank comprises an anti-wear and anti-corrosion layer and a tank shell layer which are arranged from inside to outside.

In one embodiment, the nozzle is an anti-clogging nozzle;

the anti-blocking nozzle comprises a nozzle shell and an anti-blocking mechanism, the nozzle shell is arranged at the bottom of the flushing oil coil through a nozzle seat, a liquid inlet hole communicated with the inside of the flushing oil coil is formed in the top of the nozzle shell, and a group of liquid outlet holes communicated with the inside of the nozzle shell are formed in the bottom of the nozzle shell.

The anti-blocking mechanism comprises an anti-blocking box, a reset spring, a sliding block, a puncture needle cylinder and an annular liquid baffle plate, wherein the bottom of the nozzle seat is provided with a connecting plate, the anti-blocking box is arranged in the nozzle shell through the connecting plate, the annular liquid baffle plate is fixed at the bottom in the nozzle shell, an annular net plate is arranged between the anti-blocking box and the annular liquid baffle plate, the outer side wall of the annular net plate is fixedly connected with the inner side wall of the anti-blocking box, the inner side wall of the annular net plate is fixedly connected with the outer side wall of the annular liquid baffle plate, a plurality of meshes are arranged on the annular net plate, a guide rod is arranged in the anti-blocking box, the sliding block penetrates through the guide rod and is arranged in the anti-blocking box and can slide in the anti-blocking box, one end of the reset spring is fixedly connected with the top of the sliding block, the other end of, and the lower part of the puncturing needle cylinder penetrates through the liquid outlet hole corresponding to the puncturing needle cylinder.

In one embodiment, the upper portion of the puncture cylinder is cylindrical and the lower portion is conical.

The invention has the advantages and beneficial effects that:

1. the tank body of the invention adopts a horizontal type, can ensure that a sewage pipeline of the oil slurry filter feeds the liquid stored in the sump oil tank (namely, a sump oil inlet is positioned at the top of the sump oil tank), does not need to improve the installation height of the oil slurry filter, and has convenient equipment installation and maintenance and small investment.

2. According to the invention, one dirty oil inlet corresponds to one sewage discharge pipeline and one oil slurry filter, namely, the sewage discharge pipeline of each oil slurry filter independently feeds the dirty oil tank, so that the phenomena of mutual influence of sewage discharge and medium flowing dead zones of the sewage discharge pipelines caused by the fact that a plurality of oil slurry filters share one sewage discharge pipeline can be effectively prevented, and the blockage of the sewage discharge pipeline is prevented.

3. The design of the flushing oil coil pipe of the invention is that the flushing oil coil pipe arranged at the lower part in the dirty oil tank is periodically opened to control the dosage of the flushing oil, firstly, the sediment at the bottom of the dirty oil tank can be effectively stirred; secondly, the contents of catalyst particles, colloid and asphaltene in the sump oil can be effectively diluted, the percentage contents of the catalyst particles, the colloid and the asphaltene in the sump oil are controlled, the scouring influence of the catalyst particles in a sump oil medium on internal parts of the sump oil pump is reduced, and the stable operation of the sump oil pump is ensured.

4. The horizontal tank body comprises an anti-wear and anti-corrosion layer and a tank body shell layer which are arranged from inside to outside; can prevent corrosion and resist abrasion, and prolongs the service life of the horizontal tank body.

5. The anti-blocking nozzle can automatically dredge the liquid outlet hole of the nozzle to prevent blocking.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view a-a of the present invention.

Fig. 3 is a schematic structural view of the anti-clogging nozzle in embodiment 1.

FIG. 4 is a schematic view showing the state of the anti-clogging nozzle in use in example 1.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Referring to fig. 1 and 2, a sump oil tank includes a horizontal tank body 1 and a flushing oil coil 2.

Wherein, the flushing oil coil 2 is arranged at the lower part in the horizontal tank body 1, one end of the flushing oil coil 2 is closed, the other end penetrates through one side of the horizontal tank body 1 and extends out of the horizontal tank body 1 and is provided with a flushing oil inlet 3, and a group of nozzles 4 are equidistantly arranged at the bottom of the flushing oil coil 2. The top of the horizontal tank body 1 is provided with three dirty oil inlets 5. The bottom of the horizontal tank body 1 is provided with a sump oil outlet 6. The dirty oil inlet 5 is communicated with the oil slurry filter 8 through a sewage pipeline 7, and one dirty oil inlet 5 corresponds to one sewage pipeline 7 and one oil slurry filter 8.

Wherein, the pipe spacing of the flushing oil coil pipe 2 is uniformly arranged.

Specifically, the top of the horizontal tank body 1 is provided with an instrument detection port 9 and an inspection manhole 10. The bottom of the horizontal tank body 1 is provided with a sump oil tank support 11.

Wherein all sewer lines 7 are set step-down.

Specifically, the horizontal tank body 1 comprises an anti-wear and anti-corrosion layer 101 and a tank body shell layer 102 which are arranged from inside to outside.

Specifically, in this embodiment 1, as shown in fig. 3 and 4, the nozzle 4 is an anti-clogging nozzle. The anti-clogging nozzle includes a nozzle housing 41 and an anti-clogging mechanism. A nozzle housing 41 is provided at the bottom of the flushing oil coil 2 by a nozzle holder 42. The top of the nozzle housing 41 is provided with a liquid inlet hole 43 communicating with the interior of the flushing oil coil 2. The bottom of the nozzle housing 41 is provided with a set of exit holes 44 communicating with the interior of the nozzle housing 41.

Specifically, the anti-blocking mechanism comprises an anti-blocking box 45, a return spring 46, a slide block 47, a puncture needle cylinder 48 and an annular liquid baffle 49. The nozzle holder 42 is provided at the bottom thereof with a connection plate 40. The anti-blocking box 45 is disposed in the nozzle housing 41 through the connection plate 40. An annular liquid baffle 49 is fixed to the bottom inside the nozzle housing 41. Prevent being equipped with annular otter board 401 between stifled box 45 and the cyclic annular fender liquid board 49, and the lateral wall of annular otter board 401 and prevent stifled box 45's inside wall fixed connection, annular otter board 401's inside wall and cyclic annular fender liquid board 49's outside wall fixed connection. The annular net plate 401 is provided with a plurality of meshes 402. The anti-blocking box 45 is internally provided with a guide rod 403, the slide block 47 passes through the guide rod 403 and is arranged in the anti-blocking box 45, and the slide block 47 can slide in the anti-blocking box 45. One end of the return spring 46 is fixedly connected with the top of the sliding block 47, and the other end is fixedly connected with the inner top wall of the anti-blocking box 45. The bottom of the slide block 47 is provided with a group of puncturing needle cylinders 48 matched with the liquid outlet holes 44, one liquid outlet hole 44 corresponds to one puncturing needle cylinder 48, and the lower part of the puncturing needle cylinder 48 penetrates through the liquid outlet hole 44 corresponding to the puncturing needle cylinder 48.

Wherein the upper portion of the puncture needle cylinder 48 is cylindrical and the lower portion thereof is tapered.

It should be noted that: the anti-blocking nozzle in embodiment 1 is only one of the preferred anti-blocking nozzles, and other types of anti-blocking nozzles may be used in the present invention.

Working principle and working process of the invention

Flow path of catalytic slurry oil: the oil slurry flows into the horizontal tank body 1 from the oil slurry filter 8 through the sewage pipeline 7 from the dirty oil inlet 5, and the dirty oil in the horizontal tank body 1 is discharged from the dirty oil outlet 6.

The flushing oil coil 2 arranged at the lower part in the dirty oil tank is periodically opened, the flushing oil in the flushing oil coil 2 flows out from the nozzle 4, and the sediment at the bottom of the horizontal tank body 1 is stirred, so that the sediment at the bottom of the tank body cannot be greatly deposited, agglomerated and agglomerated; meanwhile, the contents of catalyst particles, colloid and asphaltene in the sump oil can be effectively diluted, so that the percentage contents of the catalyst particles, the colloid and the asphaltene in the sump oil entering the sump oil pump are stable, the influence of the catalyst particles in a sump oil medium on the flushing of internal parts of the sump oil pump is reduced, and the stable operation of the sump oil pump of the oil slurry filtering device is ensured.

The working principle of the anti-blocking nozzle is as follows: flushing oil enters the nozzle shell 41 from a liquid inlet in the flushing oil coil 2, then flows upwards into the anti-blocking box 45 through the annular net plate 401 between the anti-blocking box 45 and the annular liquid baffle plate 49, the flushing oil in the anti-blocking box 45 continuously flows upwards to impact the sliding block 47 in the anti-blocking box 45, so that the sliding block 47 is pushed to move upwards, the puncturing needle cylinder 48 on the sliding block 47 also moves upwards along with the sliding block, and the puncturing needle cylinder 48 is separated from the liquid outlet hole 44 at the bottom of the nozzle shell 41 as shown in fig. 4, and the nozzle 4 performs normal flushing work. After the washing is finished, because the washing oil does not flow upwards, the sliding block 47 moves downwards under the action of the return spring 46, the puncture needle cylinder 48 is inserted into the liquid outlet hole 44, and the sediment which is not agglomerated in the liquid outlet hole 44 is removed. The guiding rod 403 is designed to allow the needle cylinder 48 to be accurately inserted into the liquid outlet hole 44 without error when the return spring 46 is reset.

When the dirty oil tank stores oil, the upper and lower parts of the slide block 47 have balanced pressure, and the liquid outlet hole 44 is in a closed state.

The invention has the advantages and beneficial effects that:

3. The design of the flushing oil coil 2 of the invention is that the flushing oil coil arranged at the lower part in the dirty oil tank is periodically opened to control the dosage of the flushing oil, firstly, the sediment at the bottom of the dirty oil tank can be effectively stirred; secondly, the contents of catalyst particles, colloid and asphaltene in the sump oil can be effectively diluted, the percentage contents of the catalyst particles, the colloid and the asphaltene in the sump oil are controlled, the scouring influence of the catalyst particles in a sump oil medium on internal parts of the sump oil pump is reduced, and the stable operation of the sump oil pump is ensured.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The dirty oil tank is characterized by comprising a horizontal tank body and a flushing oil coil, wherein the flushing oil coil is arranged at the lower part in the horizontal tank body, one end of the flushing oil coil is sealed, one side of the other end of the flushing oil coil penetrating through the horizontal tank body extends out of the horizontal tank body and is provided with a flushing oil inlet, a group of nozzles are equidistantly arranged at the bottom of the flushing oil coil, at least two dirty oil inlets are formed in the top of the horizontal tank body, a dirty oil outlet is formed in the bottom of the horizontal tank body, and the dirty oil inlet is communicated with an oil slurry filter through a sewage pipeline.

2. A slop oil tank as claimed in claim 1 wherein the flush oil coil is evenly spaced.

3. The sump oil tank of claim 1, wherein the top of the horizontal tank body is provided with an instrument detection port and an inspection manhole.

4. The sump oil tank of claim 1, wherein the bottom of the horizontal tank is provided with a sump oil tank support.

5. A dirty oil tank as claimed in claim 1, wherein a dirty oil inlet corresponds to a drain line and a slurry filter.

6. A slop oil tank according to claim 5 wherein all of the blowdown lines are stepped down.

7. A dirty oil tank as claimed in claim 5, wherein the number of dirty oil inlets is 3.

8. The sump oil tank of claim 1, wherein the horizontal tank comprises an anti-wear and anti-corrosion layer and a tank shell layer arranged from inside to outside.

9. The sump oil tank of claim 1, wherein the nozzle is an anti-clogging nozzle;

the anti-blocking nozzle comprises a nozzle shell and an anti-blocking mechanism, the nozzle shell is arranged at the bottom of the flushing oil coil through a nozzle seat, a liquid inlet hole communicated with the interior of the flushing oil coil is formed in the top of the nozzle shell, and a group of liquid outlet holes communicated with the interior of the nozzle shell are formed in the bottom of the nozzle shell;

10. The dirty oil tank of claim 9, wherein the puncture cylinder has a cylindrical upper portion and a tapered lower portion.