A kind of impurity separating device for petroleum storage tank
Technical field
The present invention relates to a kind of impurity separating device for petroleum storage tank, belong to petroleum storage tank field.
Background technology
After oil tank uses a period of time, impurity in crude oil will be deposited on tank bottoms and tank skin, oil storage tank available capacity is made to reduce, affect the efficiency of oil storage tank, therefore petroleum storage tank needs periodically carry out maintenance and inspection and remove sludge in tank, current domestic traditional tank cleaning method mainly utilizes manually, and it is big that artificial clear tank also exists labor intensity, and long construction period, poor stability, crude oil recovery rate are low, pollute the problems such as environment.Along with a large amount of construction of Chinese large-sized petroleum storage tank and the pay attention to day by day to environmental protection problem, artificial clear tank has not met the objective requirement of environment and development, eliminates the certainty that artificial tank clearly is history.Use traditional artificial clear tank method, although operating expenses is low, but the tank bottoms sludge accounting for tank(storage)capacity 3%-4% is difficult to process, residual oil need to be pressed at a discount and sell.Although and COW process operating expenses is higher, but substantially all recovery can be divided by the oil in tank bottoms sludge, sell by normal oil price.As a example by 100,000 side's oil tanks: the crude oil that manual cleaning need to process at a discount about 1600 tons, the most per ton at a discount by 500 yuan of calculating, actual loss reaches 800,000 yuan, and as in the part plus reluctant greasy filth and waste, actual loss also to increase.Additionally COW process can reduce oil tank lay-off period, improves the utilization rate of oil tank, is conducive to increasing production and improying productivity.Lack the device of a kind of good oil sweep and relevant method currently on the market, it is impossible to realize the problem that petroleum storage tank bottom precipitation is not easily cleaned.
Summary of the invention
The goal of the invention of the present invention is: for the problem of above-mentioned existence, a kind of impurity separating device for petroleum storage tank is provided, in the separator impurity is carried out quick deceleration, due to quick velocity variations, eddy current can be formed in the region of buffer bar, the eddy current not existed together also is susceptible to collision, the impurity that weight is different in eddy current realizes separating under centrifugal action, the floating of effective impurity and sinking, ensureing the sharp separation of stone well cuts, its magazins' layout improves 3-5 times compared to its separating rate under gravity.
The technical solution used in the present invention is as follows:
The invention discloses a kind of impurity separating device for petroleum storage tank, including vertically arranged fusiform separator;Heavy district, Zhong Zhi district and lightweight district from top to bottom it is divided at separator;Being provided with heavy outlet in heavy district, be provided with light port exit in lightweight district, be respectively provided with separation outlet in Zhong Zhi district opposite sides and separate import, Zhong Zhi district is provided with buffer unit, this buffer unit includes bumper bracket and the buffer bar of some flexibilities;In buffer bar is all vertically provided at separator and fixed by bumper bracket.
The oil in the region of contamination precipitation in this device extraction petroleum storage tank, enter in separator, in the separator impurity is carried out quick deceleration, due to quick velocity variations, eddy current can be formed in the region of buffer bar, the eddy current not existed together also is susceptible to collision, the impurity that weight is different in eddy current realizes separating under centrifugal action, the floating of effective impurity and sinking, ensureing the sharp separation of stone well cuts, its magazins' layout improves 3-5 times compared to its separating rate under gravity.The floor space being designed to reduction equipment of this fusiform, it is possible to be conducive to the discharge of the impurity after separating.
Further, this heavy district is funnel-form, and this lightweight district is tapered, and the aspect ratio in heavy district, Zhong Zhi district and lightweight district is (2-4): (6-8): (1-3);In this Zhong Zhi district, average every cubic metre has 80-110 buffer bar.This structure can be convenient to the separation of impurity, improve the separating rate of impurity, simultaneously, this is designed to effectively ensure that Zhong Zhi district can form abundant eddy current, ensure the effectiveness separated, it is possible to come back to Zhong Zhi district after avoiding magazins' layout, affect the separation of other impurity, additionally, this density can effectively reduce the floor space of equipment.
Further, this buffer bar width and thickness are than for 4-6;Buffer bar is distributed twist, and the quantity of buffer bar that is distributed with reverse acting spiral of transport screw is than for 1.3-1.5.The buffer bar of this design can increase oil and produce the probability of eddy current, may produce multiple eddy current near same buffer bar, the effective probability improving oil magazins' layout, improves the availability of device.
Further, this separation import is flat, is connected with flow deflector separating import department, and this flow deflector uses canvas strips.It is non-pooled in different directions dispersion that this is designed to the petroleum liquid enabling entrance separator, improves the magazins' layout efficiency of device.
Further, this buffer bar is divided into enhancement Layer, rubber layer, layer of cloth and extended layer from the inside to the outside, and enhancement Layer uses multiply steel cable 2 rubber layer to use the rubber of anti-corrosion by petroleum, and layer of cloth uses the non-woven fabrics that layer 2-4 is overlapping, and extended layer uses single cellosilk.This structure buffer bar there is higher toughness, it is possible to increase in the service life of buffer bar, reduce the use cost of equipment, it is possible to be conducive to the use steady in a long-term of device, additionally, reduce the fracture probability of buffer bar, improve the buffering effect of buffer bar.
Further, this rubber different is defended diene copolymers by 2 parts of zinc oxide, 16 parts of epoxy natural rubbers, 32 parts of styrene-butadiene rubber, 2.5 parts of expanded pearlite powder, 7 parts of butyl rubbers, 1 part of sulfur, 6 parts of terpene resins, 12 parts of polyisobutylene, 18 parts of hydroxyethyl methylacrylates, 0.1 part of Graphene, 0.2 portion of fluorocarbon surfactant, 6 parts of o-phthalic acid dibutyl esters, 6 parts of isobutene .s one, 3 parts of hydrogenated rosin glycerides, 1 part of terpene resin, 0.3 part of liquid hydrogenated abalyn, 4 parts of amorphous state a alkene copolymers, 0.2 part of polyester fiber form.Said components, it is possible to effectively prevent rubber to be corroded, it is possible to increase the service life of rubber, simultaneously, additionally it is possible to promote the toughness of rubber, of many uses, waterproof, acid and alkali-resistance oil resistant, corrosion-resistant, it is allowed to cable is in for a long time to be had in water or oil environment.
Further, filtration system based on this segregation apparatus, including oil tank body, blender, the first filter and the second filter;Segregation apparatus includes the first separator and the second separator;Blender is mixed by the oil with bottom the upper and lower extracting oil tank body respectively on the top of pipeline communication to oil tank body respectively, the outfan of blender is communicated to the first separator, and the outlet that separates of the first separator separates inlet communication, heavy outlet by the separation inlet communication of the second filter and the second separator, light port exit by the first filter and the separation inlet communication of the second separator with the second separator;Second separator separate that outlet is communicated to the middle part of oil tank body, heavy outlet to oil tank body lower part, light port exit are communicated to oil tank body upper part.This filtration system, there is good separating effect, lightweight and the impurity of heavy in petroleum storage tank can be concurrently separated out, it is possible to oil bigger for removing foreign matter amount can be filtered by first, it is possible to heightens the response rate of oil, improve the efficiency that oil filters, avoid oil impurity at the bottom precipitation of oil tank body, affect the amount of storage of petroleum storage tank, reduce the cycle of artificial treatment petroleum storage tank cleaning, improve the use difficulty of device, reduce difficulty and the cost of oil storage.
Further, the filter method of its filtration system:
Step 1: the oil of oil tank body upper part and bottom passes through the pipeline ratio mix homogeneously with 1.3-1.8, mixed oil is injected to the Zhong Zhi district of the first separator under the effect of oil pump with the speed of 15-18m/s, after oil fully slows down under the effect of buffer bar, in oil, the impurity of heavy drops to heavy district, and in oil, the impurity of lightweight drops to lightweight district;
Step 2: the oil after magazins' layout enters in the second separator through separating outlet, the oil in heavy district enters and imports in the second separator in the first filter after contaminant filter, and the oil in lightweight district enters in the second filter and imports after contaminant filter in the second separator;
Step 3: the separate inlet opening of the second separator injects oil with the speed of 18-22m/s, oil, after the buffer bar of the second separator buffers, separates in Zhong Zhi district;Entering in the oil of the second separator, the impurity of heavy drops to heavy district, and in oil, the impurity of lightweight drops to lightweight district;
Step 4: in the second separator, the oil in heavy district injects the bottom of oil tank body by pipeline, sprays downwards with the speed of 12-14m/s and washes away the bottom of oil tank body;In second separator, the oil in lightweight district injects the top of oil tank body by pipeline, upwards sprays with the speed of 8-10m/s and washes away the upper portion side wall of oil tank body.
The method, that can effectively improve device carries out sharp separation to the impurity in oil in the first separator and the second separator, then, isolated impurity for the first time is filtered, then the structure utilizing the second separator will utilize lighter impurity to impact the light impurities on storage tank top, utilize heavy impurity that the precipitation bottom petroleum storage tank is impacted, reduce petroleum storage tank sidewall and precipitation is piled up in bottom, it is to avoid precipitation too much affects the capacity of petroleum storage tank and the use cost of petroleum storage tank.
Further, in step 1, the downward magnetic field that intensity is 600-700 tesla is applied to the Zhong Zhi district of the first separator;In step 2, the downward magnetic field that intensity is 900-1200 tesla is applied to the Zhong Zhi district of the second separator.The separation efficiency of magnetic impurity can be improved in the magnetic field of this structure, contributes to the sharp separation of impurity in equipment.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, the oil in the region of contamination precipitation in extraction petroleum storage tank, enter in separator, in the separator impurity is carried out quick deceleration, due to quick velocity variations, it is possible to form eddy current in the region of buffer bar, the eddy current not existed together also is susceptible to collision, the impurity that weight is different in eddy current realizes separating under centrifugal action, the floating of effective impurity and sinking, it is ensured that the sharp separation of stone well cuts, its magazins' layout improves 3-5 times compared to its separating rate under gravity.
2, the floor space being designed to reduction equipment of this fusiform, it is possible to be conducive to the discharge of the impurity after separating;Isolated impurity for the first time is filtered, then the structure utilizing the second separator will utilize lighter impurity to impact the light impurities on storage tank top, utilize heavy impurity that the precipitation bottom petroleum storage tank is impacted, reduce petroleum storage tank sidewall and precipitation is piled up in bottom, it is to avoid precipitation too much affects the capacity of petroleum storage tank and the use cost of petroleum storage tank.
Accompanying drawing explanation
Fig. 1 is the impurity separating device front view for petroleum storage tank;
Fig. 2 is the filtration system figure of oil in the present invention;
Labelling in figure: 1-the first separator, 2-the second separator, 3-oil tank body, 4-blender, 5-the first filter, 6-the second filter.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1:
As it is shown in figure 1, the impurity separating device for petroleum storage tank of the present invention, including vertically arranged fusiform separator;Heavy district, Zhong Zhi district and lightweight district from top to bottom it is divided at separator;Being provided with heavy outlet in heavy district, be provided with light port exit in lightweight district, be respectively provided with separation outlet in Zhong Zhi district opposite sides and separate import, Zhong Zhi district is provided with buffer unit, this buffer unit includes bumper bracket and the buffer bar of some flexibilities;In buffer bar is all vertically provided at separator and fixed by bumper bracket.
This heavy district is funnel-form, and this lightweight district is tapered, and the aspect ratio in heavy district, Zhong Zhi district and lightweight district is (2-4): (6-8): (1-3);In this Zhong Zhi district, average every cubic metre has 80-110 buffer bar.This structure can be convenient to the separation of impurity, improve the separating rate of impurity, simultaneously, this is designed to effectively ensure that Zhong Zhi district can form abundant eddy current, ensure the effectiveness separated, it is possible to come back to Zhong Zhi district after avoiding magazins' layout, affect the separation of other impurity, additionally, this density can effectively reduce the floor space of equipment.
This buffer bar width and thickness are than for 4-6;Buffer bar is distributed twist, and the quantity of buffer bar that is distributed with reverse acting spiral of transport screw is than for 1.3-1.5.The buffer bar of this design can increase oil and produce the probability of eddy current, may produce multiple eddy current near same buffer bar, the effective probability improving oil magazins' layout, improves the availability of device.
This separation import is flat, is connected with flow deflector separating import department, and this flow deflector uses canvas strips.It is non-pooled in different directions dispersion that this is designed to the petroleum liquid enabling entrance separator, improves the magazins' layout efficiency of device.
This buffer bar is divided into enhancement Layer, rubber layer, layer of cloth and extended layer from the inside to the outside, and enhancement Layer uses multiply steel cable 2 rubber layer to use the rubber of anti-corrosion by petroleum, and layer of cloth uses the non-woven fabrics that layer 2-4 is overlapping, and extended layer uses single cellosilk.This structure buffer bar there is higher toughness, it is possible to increase in the service life of buffer bar, reduce the use cost of equipment, it is possible to be conducive to the use steady in a long-term of device, additionally, reduce the fracture probability of buffer bar, improve the buffering effect of buffer bar.
This rubber is by 2 parts of zinc oxide, 16 parts of epoxy natural rubbers, 32 parts of styrene-butadiene rubber, 2.5 parts of expanded pearlite powder, 7 parts of butyl rubbers, 1 part of sulfur, 6 parts of terpene resins, 12 parts of polyisobutylene, 18 parts of hydroxyethyl methylacrylates, 0.1 part of Graphene, 0.2 portion of fluorocarbon surfactant, 6 parts of o-phthalic acid dibutyl esters, 6 parts of isobutene .s one are different defends diene copolymers, 3 parts of hydrogenated rosin glycerides, 1 part of terpene resin, 0.3 part of liquid hydrogenated abalyn, 4 parts of amorphous state a alkene copolymers, 0.2 part of polyester fiber composition.Said components, it is possible to effectively prevent rubber to be corroded, it is possible to increase the service life of rubber, simultaneously, additionally it is possible to promote the toughness of rubber, of many uses, waterproof, acid and alkali-resistance oil resistant, corrosion-resistant, it is allowed to cable is in for a long time to be had in water or oil environment.
The oil in the region of contamination precipitation in this device extraction petroleum storage tank, enter in separator, in the separator impurity is carried out quick deceleration, due to quick velocity variations, eddy current can be formed in the region of buffer bar, the eddy current not existed together also is susceptible to collision, the impurity that weight is different in eddy current realizes separating under centrifugal action, the floating of effective impurity and sinking, ensureing the sharp separation of stone well cuts, its magazins' layout improves 3-5 times compared to its separating rate under gravity.The floor space being designed to reduction equipment of this fusiform, it is possible to be conducive to the discharge of the impurity after separating.
Embodiment 2
As in figure 2 it is shown, the filtration system of segregation apparatus based on embodiment 1, including oil tank body 3, blender the 4, first filter 5 and the second filter 6;Segregation apparatus includes the first separator 1 and the second separator 2;Blender 4 is mixed by the oil with bottom the upper and lower extracting oil tank body 3 respectively on the top of pipeline communication to oil tank body 3 respectively, the outfan of blender 4 is communicated to the first separator 1, and the separation outlet of the first separator 1 separates inlet communication with the second separator 2, heavy outlet separates inlet communication by the second filter 6 with the second separator 2, light port exit separates inlet communication by the first filter 5 with the second separator 2;Second separator 2 separate that outlet is communicated to the middle part of oil tank body 3, heavy outlet to oil tank body 3 bottom, light port exit are communicated to oil tank body 3 top.This filtration system, there is good separating effect, lightweight and the impurity of heavy in petroleum storage tank can be concurrently separated out, it is possible to oil bigger for removing foreign matter amount can be filtered by first, it is possible to heightens the response rate of oil, improve the efficiency that oil filters, avoid oil impurity at the bottom precipitation of oil tank body 3, affect the amount of storage of petroleum storage tank, reduce the cycle of artificial treatment petroleum storage tank cleaning, improve the use difficulty of device, reduce difficulty and the cost of oil storage.
Embodiment 3
The filtration system of segregation apparatus based on embodiment 2, its filter method:
Step 1: the oil of oil tank body 3 top and bottom passes through the pipeline ratio mix homogeneously with 1.3-1.8, mixed oil is injected to the Zhong Zhi district of the first separator 1 under the effect of oil pump with the speed of 15-18m/s, after oil fully slows down under the effect of buffer bar, in oil, the impurity of heavy drops to heavy district, and in oil, the impurity of lightweight drops to lightweight district;
Step 2: the oil after magazins' layout enters in the second separator 2 through separating outlet, the oil in heavy district enters and imports in the second separator 2 in the first filter 5 after contaminant filter, and the oil in lightweight district enters in the second filter 6 and imports after contaminant filter in the second separator 2;
Step 3: the separate inlet opening of the second separator 2 injects oil with the speed of 18-22m/s, oil, after the buffer bar of the second separator 2 buffers, separates in Zhong Zhi district;Entering in the oil of the second separator 2, the impurity of heavy drops to heavy district, and in oil, the impurity of lightweight drops to lightweight district;
Step 4: in the second separator 2, the oil in heavy district injects the bottom of oil tank body 3 by pipeline, sprays downwards with the speed of 12-14m/s and washes away the bottom of oil tank body 3;In second separator 2, the oil in lightweight district injects the top of oil tank body 3 by pipeline, upwards sprays with the speed of 8-10m/s and washes away the upper portion side wall of oil tank body 3.
In step 1, the downward magnetic field that intensity is 600-700 tesla is applied to the Zhong Zhi district of the first separator 1;In step 2, the downward magnetic field that intensity is 900-1200 tesla is applied to the Zhong Zhi district of the second separator 2.The separation efficiency of magnetic impurity can be improved in the magnetic field of this structure, contributes to the sharp separation of impurity in equipment.
The method, that can effectively improve device carries out sharp separation to the impurity in oil in the first separator 1 and the second separator 2, then, isolated impurity for the first time is filtered, then the structure utilizing the second separator 2 will utilize lighter impurity to impact the light impurities on storage tank top, utilize heavy impurity that the precipitation bottom petroleum storage tank is impacted, reduce petroleum storage tank sidewall and precipitation is piled up in bottom, it is to avoid precipitation too much affects the capacity of petroleum storage tank and the use cost of petroleum storage tank.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.