CN108854176A - A kind of rapid flocculation device and production method in catalytic cracked oil pulp settling tank - Google Patents
A kind of rapid flocculation device and production method in catalytic cracked oil pulp settling tank Download PDFInfo
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- CN108854176A CN108854176A CN201810715611.2A CN201810715611A CN108854176A CN 108854176 A CN108854176 A CN 108854176A CN 201810715611 A CN201810715611 A CN 201810715611A CN 108854176 A CN108854176 A CN 108854176A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0003—Making of sedimentation devices, structural details thereof, e.g. prefabricated parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/08—Settling tanks with single outlets for the separated liquid provided with flocculating compartments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
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- General Chemical & Material Sciences (AREA)
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention provides a kind of rapid flocculation devices and production method in catalytic cracked oil pulp settling tank, the rapid flocculation device includes working chamber and diversion pipe, the working chamber is hollow cone, the cone includes side panel and bottom panel, there are several notches as flocculator discharge port along the cutting of bottom panel edge, cutting has a circular hole as diversion pipe insert port using centered on the center of circle of the bottom panel, the diversion pipe is hollow pipe, the tail end of pipeline has several grooves along tube wall cutting, the tail end of diversion pipe welds after the diversion pipe insert port with the inner wall of side panel, the groove is in the top on the inside of the cone, and as flocculator feed inlet；The present invention also provides a kind of production methods.The present invention provides a good aggregation and flocculation environment for catalyst granules, is conducive to the effect and efficiency (speed) that improve catalyst granules and slurry oil sedimentation separation.
Description
Technical field
The present invention relates to petrochemical industry, especially a kind of rapid flocculation device in catalytic cracked oil pulp settling tank
And production method is more specifically one kind of the correlation theory exploitation according to mass transfer dynamics, thermodynamics and In The Coagulation Dynamics
It can accelerate the small device that unstability catalyst granules is assembled and flocculates, is installed in settling tank in catalytic cracked oil pulp.
Background technique
Slurry oil is the by-product of catalytic cracking (FCC), is rich in resin and asphalt, with the big spy of viscosity height and density
Point.FCC slurry has good economic value, but below urges due to wherein containing 0.2~0.9% diameter at 80 μm (micron)
Agent powder utilizes slurry oil to economic scale and increment, it is necessary to carry out purified treatment.
The purification treatment technology of slurry oil substantially has following several：It is natural sedimentation, chemical assistant sedimentation, filtration method, quiet
Electrically separated method and centrifugal separation etc..
Natural sedimentation is the method used earliest, only leans on gravitational settling, but since the particle of catalyst fines is tiny
(diameter<80 μm), the viscosity and specific gravity of slurry oil are all larger, in addition the presence of electric double layer, so low efficiency, the period is long, effect is poor,
Do not apply industrially.
Electrostatic separation rule can due to the phenomenon that certain parts surfaces that will necessarily occur in treatment process are wrapped up by oil and
Reason effect cannot be reached.
Centrifugal separation handles large batch of slurry oil because being difficult, so there is no the values and example of industrial application.
Requirement of the filtration method to equipment is very high.Filter device requires the small-sized of filter opening, thus is easy blocking, needs frequency
It backwashes numerously, though industrially there is application, it is not universal.
Chemical assistant sedimentation is easy to operate due to small investment, and effect is good, the sedimentation period is compared with short, treating capacity is big, so
Highly recognition in the industry is obtained, industrial application case increases sharply.
Chemical assistant sedimentation is the slurry oil purification treatment technology (note just to grow up in recent years：It is the purification of applicant
Technology).Therefore, how using enhanced treatment primary stage come further increase chemical assistant sedimentation purified treatment slurry oil effect and
In terms of efficiency (speed), before this invention is filed, there are no realize with the same or similar method of the present invention.
Rapid flocculation device is the corollary equipment for promoting chemical assistant sedimentation law technology in tank, it can make clean-up effect it is more preferable,
It is shorter to settle the period.
Effect is more preferable, then is conducive to the utilization scope for expanding slurry oil.It, can be direct if slurry oil carries out general either shallow purification
Raw material or high-grade fuel oil blend component as delayed coking；And if slurry oil carries out deep purifying, its use can be expanded
Range, for example the raw material of needle coke is prepared, or make the raw material of residual hydrocracking, to create preferably economic effect for enterprise
Benefit.
The sedimentation period is shorter, then increases processing capacity, or reduce the quantity of settling tank, and the construction for reducing settling tank is thrown
Money.
Summary of the invention
The purpose of the present invention is to provide a kind of rapid flocculation devices in catalytic cracked oil pulp settling tank, make catalyzed oil
Unstability catalyst solid particle in slurry is in flocculator, and (1) rapid aggregation and/or flocculation are at big micelle, to accelerate to be catalyzed
The speed of agent particle sedimentation separation from slurry oil；(2) more fully assemble and/or flocculate, to improve catalyst granules and slurry oil
The effect of sedimentation separation, the final user for patented technology reduce investment, create better economic benefit.
The basic the Nomenclature Composition and Structure of Complexes of one complete rapid flocculation device is as follows：
A kind of rapid flocculation device in catalytic cracked oil pulp settling tank, including working chamber and diversion pipe, the work
Chamber is hollow cone, and the cone includes side panel and bottom panel, has several notches along the cutting of bottom panel edge
As flocculator discharge port, cutting has a circular hole as diversion pipe insert port using centered on the center of circle of the bottom panel, described
Diversion pipe is hollow pipe, and the tail end of pipeline has several grooves along tube wall cutting, and the tail end of diversion pipe passes through the water conservancy diversion
It is welded after pipe insert port with the inner wall of side panel, the groove is in the top on the inside of the cone, and as flocculator
Feed inlet.
Preferably, the shaft section of the cone is to push up the isosceles triangle that angle theta is 90 °, the flocculator feed inlet
Angle between center line and flocculator discharge port center line is 45 °.
Preferably, the flocculator discharge port is 4 and is uniformly distributed along bottom panel edge, each flocculator discharge port
Be along bottom panel edge, using 4 equally distributed straight lines perpendicular to cone axis as side, cut come with described
The closing notch that straight line and bottom panel edge line surround.
Preferably, the groove is 4 and the two sides of each groove are parallel to diversion pipe axis, and base vertical is in water conservancy diversion
Pipe axis, the tube wall arc length L not being cut between adjacent grooves2Between 20~30mm, the starting point of the diversion pipe is equipped with
Flange.
Preferably, the side panel of the cone and bottom panel are to be made with a thickness of the steel plate of 0.5~5mm.
Preferably:
A. residence time, residence time T of the slurry oil in working chamber are used 3-10 seconds；
B. the feed flow rate of flocculator, flow velocity v of the slurry oil into flocculator1Using 1-2.5 meter per second；
C. the tapping flowrate of flocculator, slurry oil go out the flow velocity v of flocculator2Using 1-3.5 meter per second；
D. the treating capacity of flocculator, the treating capacity Q under practical application operating condition, unit is rice3/ the second.
Wherein T, v1、v2In specific application, it limits and requires according to actual condition to preselect, Q is under actual condition
Treating capacity.
Preferably, residence time T of the slurry oil in working chamber is used 5 seconds, flow velocity v of the slurry oil into flocculator1Using 1
Meter per second, slurry oil go out the flow velocity v of flocculator2Using 2.5 meter per seconds.
The present invention also provides a kind of production methods for the rapid flocculation device in catalytic cracked oil pulp settling tank, special
Sign is, includes the following steps：
Step 1, the outer dimension of flocculator is calculated：Based on the treating capacity Q of flocculator, residence time T, circle is calculated
The bus length L of cone1And the radius R of bottom panel1；
Step 2, the circulation area of flocculator feed inlet is calculated：The circulation area of flocculator feed inlet is diversion pipe slurry oil
Into the circulation area of working chamber, with the feed flow rate v of flocculator1And flocculation is calculated based on the treating capacity Q of flocculator
The circulation area S of device feed inlet1；
Step 3, the circulation area of flocculator discharge port is calculated：The circulation area of flocculator discharge port is in working chamber
Slurry oil enters the circulation area of settling tank, with the tapping flowrate v of flocculator2And it based on the treating capacity Q of flocculator, calculates
Slurry oil goes out the circulation area S of flocculator out2；
Step 4, the side panel of cone is made：The bus length L being calculated with step 11Based on, using with a thickness of
The steel plate of 0.5~5mm makes cone side panel, and seam crossing is using welding；
Step 5, the bottom panel of cone is made, the radius R of bottom panel to be calculated in step 11Based on, using thickness
Degree is the steel plate of 0.5~5mm, makes the bottom panel of cone；Then the slurry oil being calculated in step 3 is gone out to the stream of flocculator
Logical area S2Based on, the area for being divided into 4 flocculator discharge ports is calculated, and be uniformly distributed along bottom panel edge, it is each to wad a quilt with cotton
Condenser discharge port is, using 4 equally distributed straight lines perpendicular to cone axis as side, to cut along bottom panel edge
The closing notch surrounded with the straight line and bottom panel edge line come；Then using the geometric center of bottom panel as the center of circle, cutting
A radius is slightly larger than the circular hole of diversion pipe radius out, as diversion pipe insert port；
Step 6, diversion pipe is made：4 equalizations are cut along the axis direction for being parallel to diversion pipe in water conservancy diversion pipe end
Groove, the two sides of groove are parallel to diversion pipe axis, and base vertical is in diversion pipe axis, the main view perspective plane of 4 grooves
Circulation area S of the slurry oil that long-pending summation will be calculated with step 2 into flocculator1It is equal；To guarantee diversion pipe and cone
Side panel inner wall securely weld, the tube wall arc length L not being cut between adjacent grooves2It should be between 20~30mm.
Step 7, diversion pipe is aligned with the axis of cone, it then will be on the inside of diversion pipe top and cone flocculator
Top welds together；
Step 8, by cone bottom surface sleeve-board on diversion pipe, in cone bottom by the diagonal line tune of bottom panel weld point
It is whole that bottom panel weld is then fixed on cone bottom to vertical with the diagonal line of diversion pipe pad, while by diversion pipe
Gap welded seal between insert port and diversion pipe is good；
Step 9, upper flange identical with diversion pipe pressure rating and nominal diameter is welded in the starting point of diversion pipe；
Step 10, finally to polishing at each weld and cutting.
Compared with prior art, creative effect of the invention is：Rapid flocculation device of the invention mentions for catalyst granules
A good aggregation and flocculation environment have been supplied, has been conducive to improve catalyst granules (1) rapid aggregation and/or flocculation into big glue
Group, to accelerate the speed of catalyst granules sedimentation separation from slurry oil；(2) more fully assemble and/or flocculate, to improve catalysis
The effect of agent particle and slurry oil sedimentation separation, the final user for patented technology reduce investment, create better economic benefit.
In addition：Slurry oil flows downward out flocculator with faster speed (oblique), has given catalyst granules micelle one downward
Acceleration also contributes to the sedimentation separation for accelerating catalyst granules micelle in this way.
Detailed description of the invention
Fig. 1 is a kind of shaft section figure for the rapid flocculation device in catalytic cracked oil pulp settling tank provided by the invention.
Fig. 2 is a kind of main view for the rapid flocculation device in catalytic cracked oil pulp settling tank provided by the invention.
Fig. 3 is a kind of top view for the rapid flocculation device in catalytic cracked oil pulp settling tank provided by the invention.
Fig. 4 is a kind of main view of diversion pipe provided by the invention (Fig. 4 is enlarged drawing in Fig. 2 dotted line frame).
Fig. 5 is a kind of top view of diversion pipe provided by the invention.
Detailed description of the invention：1- cone, 2- diversion pipe, 3- flocculator discharge port, 4- flocculator feed inlet, L1Cone
Bus length, L2The tube wall arc length not being cut.
Specific embodiment
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, with reference to the accompanying drawing and specifically
The present invention is further described for embodiment.
Theoretical foundation and its application of the invention is as follows：
Summation：The present invention has used for reference the correlation theory of purifying water process, has invented applied to the quick of slurry oil sedimentation separation
Flocculator.
1, In The Coagulation Dynamics are theoretical
In the factor for influencing coagulation effect, hydraulics are a key factors, to reach optimal coagulation effect, it should create
Good hydraulics are made, that is, design reasonable mixing pit and flocculation basin, and In The Coagulation Dynamics are exactly the basis of its design.
Two basic conceptions are referred here to, one is incorgruous flocculation, and one is to flocculate in the same direction.
Incorgruous flocculation (perikinetic flocculation)：Incorgruous flocculation, which refers to, takes off steady colloid since Brownian movement is collided
The phenomenon that hitting and agglomerating.
Flocculation (orthokinetic flocculation) in the same direction：Flocculation, which refers to, in the same direction takes off steady colloid by means of waterpower or machine
The phenomenon that tool stirring makes colloidal solid collide and agglomerate.
It should be noted that：
(1) it is mixing and is flocculating initial stage, be mainly shown as incorgruous flocculation, form tiny flocculation body；
(2) it after flocculation initial stage, is then mainly shown as flocculation in the same direction, forms coarse floccule body；
(3) the two is not distinguished strictly in time, all may be simultaneously present in any stage, and only degree is different.
The collision rate of particle is in incorgruous flocculation：
In formula：
dn/dt- collision rate (1/cm3·s)；
"-"-expression total number of particles amount is reduced with flocculation time
K-Boltzmann constant；
η-effective collision coefficient, reflection particle take off steady degree；
T-water absolute temperature, (K)；
μ-water kinematic viscosity, (g/cms)；
N-amounts of particles concentration, (a/cm3)。
When derivation formula (1-1), assume as following：1. water-borne glue body particle is completely de- steady；2. particle collides every time
All it is effective collision, can all particle is caused mutually to be assembled, little particle is made to become bulky grain；3. particle is uniform spherome.
Due to only having little particle just to have Brownian movement, as particle aggregation increases, Brownian movement will gradually weaken, and work as d
At 1 μm of >, Brownian movement disappears substantially, therefore particle to be made to further hit against cohesion, it is necessary to be flocculated in the same direction.
Collision rate (the 1/cm of particle in flocculating in the same direction3S) it is：According to the derivation of formula (1-1),
Nij=8 π dDn2(1-2)
In formula：
Nij--- j particles collision rate (1/cm3·s)；
N-amounts of particles concentration (a/cm3)；
D-particle diffusivity (cm2/s)；
D-particle effective diameter (effective diameter) (cm).
This utilization theoretical in the present invention：
Either aggregation or flocculation, requires to collide between particle first, and collision rate is higher, and aggregation and flocculation occurs
Chance it is bigger.From formula (1-1), (1-2) as can be seen that either which kind of form flocculation, all with the particle in system
Concentration n is related.Due to basic loss of stability in the processing of catalyst granules in frontNote, slurry oil suspension enters the present invention
After the flocculator, catalyst granules has concentration advantage in flocculator, is just known according to above-mentioned theory, in this way to catalyst
Intergranular collision is advantageous, that is, the aggregation and flocculation for being conducive to catalyst granules are grown up, so that accelerator activator particle is in slurry oil
Sedimentation in settling tank.Aggregates body is bigger, then is less susceptible to spread, therefore due to the weight of particle itself, inevitable outcome
Become easier to sedimentation quickly.
Note：Suspended particulate causes stable main original equably in suspension system without sinking to being known as the stability of particle
Because being particle with electric double layer.Unstability is primarily referred to as eliminating the electric double layer of particle surface, makes it that effective collision occurs.
2, diffusion theory：Fick First Law
J-diffusion flux, unit time pass through particle number (the particle number/s.cm of unit section2)
D-diffusion coefficient, the diffusion flux (m of unit concentration gradient2/ s or cm2/s)
C-particle number/cm3(concentration)；
"-"-expression particle is spread from high concentration to low concentration, i.e., spreads against concentration gradient direction；
- concentration gradient.
Above formula shows：Diffusion rate depends on external conditionAnd diffusion coefficient.Diffusion coefficient and particle itself
Property such as radius, charge, polarization performance etc. is related.
This utilization theoretical in the present invention：
Fick First Law is it is found that in the case where diffusion coefficient D is certain, diffusion flux J and concentration gradientAt
Direct ratio, i.e. concentration ladder is bigger, and diffusion velocity is faster.Therefore, if the slurry oil containing catalyst granules enters directly into settling tank, newly
Into slurry oil and settling tank have already passed through a period of time sedimentation slurry oil between there are the concentration gradients of catalyst granules, so very
It is easy to cause catalyst granules to spread in settling tank, as a result, causing the concentration of catalyst granules reduces.By coagulation power
Theory is unfavorable for catalyst granules aggregation or flocculation it is found that catalyst granules concentration is low.Namely will affect catalyst granules from
The effect and efficiency separated in slurry oil.
The present invention allow newly into slurry oil be first into flocculator, be rather than directly into the particle for having been subjected to sedimentation
In the lower slurry oil system of concentration, since fresh slurry oil is in flocculator：(1) catalyst granules is not spread, also without abundant
Ground aggregation and flocculation, therefore catalyst granules concentration with higher at this time；(2) after slurry oil enters in flocculator, due to unexpected
Expanding, the reduced velocity flow of slurry oil, slurry oil, which is forced in device, stops certain time, that is to say, that rapid flocculation device is intergranular touches
It hits, and then provides necessary time and space for aggregation and flocculation；(3) due in the feed inlet center line of flocculator and discharge port
Heart line intersection at 45 °, can form eddy flow in device, and pressure allows catalyst granules to generate collision and in the same direction flocculation.Therefore, of the invention
Rapid flocculation device for catalyst granules provide one it is good aggregation with flocculation environment, be conducive to improve catalyst granules from
The effect and efficiency (speed) that sedimentation separation comes out in slurry oil.
In addition：Slurry oil flows downward out flocculator with faster speed (oblique), has given catalyst granules micelle one downward
Acceleration also contributes to the sedimentation separation for accelerating catalyst granules micelle in this way.
According to above-mentioned theoretical basis, the present invention is discussed further by embodiment 1-4.
Embodiment 1
As shown in Figs. 1-5, the present embodiment provides a kind of rapid flocculation devices in catalytic cracked oil pulp settling tank, including
Working chamber (i.e. flocculator ontology) and diversion pipe 2, the working chamber are hollow cone 1, and the cone 1 includes side panel
And bottom panel, there are several notches as flocculator discharge port 3 along the cutting of bottom panel edge, the center of circle with the bottom panel is
Central cutting has a circular hole as diversion pipe insert port, and the diversion pipe 2 is hollow pipe, and the tail end of pipeline is cut along tube wall
Several grooves are cut, the tail end of diversion pipe 1 welds after the diversion pipe insert port with the inner wall of side panel, the groove
Top in 1 inside of cone, and as flocculator feed inlet 4.
Preferably, the shaft section of the cone 1 is to push up the isosceles triangle that angle theta is 90 °, the flocculator feed inlet
Angle between 3 center line of 4 center lines and flocculator discharge port is 45 °.According to theoretical foundation as shown above, using this technology
Scheme provides a good aggregation and flocculation environment for catalyst granules, is conducive to improve catalyst granules and slurry oil is heavy
Isolated effect and efficiency (speed) drop.
Preferably, as shown in figure 3, the flocculator discharge port 3 is 4 and is uniformly distributed along bottom panel edge, respectively
Flocculator discharge port 3 is, using 4 equally distributed straight lines perpendicular to cone axis as side, to cut along bottom panel edge
Cut out the closing notch surrounded with the straight line and bottom panel edge line come.
Preferably, the groove is 4 and the two sides of each groove are parallel to diversion pipe axis, and base vertical is in water conservancy diversion
Pipe axis, the tube wall arc length L not being cut between adjacent grooves2Between 20~30mm, more preferably 20mm.The diversion pipe
1 starting point is equipped with flange, to be attached with other equipment.
Preferably, the discharge port center line of flocculator and feed inlet central axis are conducive to form rotation in flocculator
Stream, to improve the flocculation and aggregation velocity and effect of catalyst granules.
Preferably, the side panel of the cone 1 and bottom panel are to be made with a thickness of the steel plate of 0.5~5mm, more preferably
For 1.5mm.
Preferably, the medium as handled by the flocculator is catalytic cracked oil pulp, without corrosivity, therefore to making material
There is no particular/special requirement, cone uses the steel alloy of 20# ordinary carbon steel and various models, and diversion pipe is by meeting national standard
Steel pipe and accessory be made.
Embodiment 2
The present embodiment provides a set of for designing the underlying parameter of the rapid flocculation device in catalytic cracked oil pulp settling tank：
A. residence time, residence time T of the slurry oil in working chamber are used 3-10 seconds, preferably 5 seconds；
B. the feed flow rate of flocculator, flow velocity v of the slurry oil into flocculator1Using 1-2.5 meter per second, preferably 1 meter per second；
C. the tapping flowrate of flocculator, slurry oil go out the flow velocity v of flocculator2Using 1-3.5 meter per second, preferably 2.5 meter per seconds；
D. the treating capacity of flocculator, the treating capacity Q under practical application operating condition, unit is rice3/ the second.
Wherein T, v1、v2In specific application, it limits and requires according to actual condition to preselect, Q is under actual condition
Treating capacity.
Embodiment 3
On the basis of embodiment 1,2 combines, the present invention also provides a kind of in catalytic cracked oil pulp settling tank
The production method of rapid flocculation device：
Step 1, the outer dimension of flocculator is calculated：Based on the treating capacity Q of flocculator, residence time T, circle is calculated
The bus length L of cone1And the radius R of bottom panel1。
Step 2, the circulation area of flocculator feed inlet is calculated：The circulation area of flocculator feed inlet is diversion pipe slurry oil
Into the circulation area of working chamber, with the feed flow rate v of flocculator1And flocculation is calculated based on the treating capacity Q of flocculator
The circulation area S of device feed inlet1。
Step 3, the circulation area of flocculator discharge port is calculated：The circulation area of flocculator discharge port is in working chamber
Slurry oil enters the circulation area of settling tank, with the tapping flowrate v of flocculator2And it based on the treating capacity Q of flocculator, calculates
Slurry oil goes out the circulation area S of flocculator out2。
Step 4, the side panel of cone is made：The bus length L being calculated with step 11Based on, using with a thickness of
0.5~5mm, the preferably steel plate of 1.5mm make cone side panel, and seam crossing is using welding.
Step 5, the bottom panel of cone is made, the radius R of bottom panel to be calculated in step 11Based on, using thickness
Degree is 0.5~5mm, the preferably steel plate of 1.5mm, makes the bottom panel of cone；Then the slurry oil being calculated in step 3 is gone out
The circulation area S of flocculator2Based on, the area for being divided into 4 flocculator discharge ports is calculated, and uniform along bottom panel edge
Distribution, each flocculator discharge port is to be with 4 equally distributed straight lines perpendicular to cone axis along bottom panel edge
Side cuts the closing notch surrounded with the straight line and bottom panel edge line come；Then it is with the geometric center of bottom panel
The center of circle cuts a radius slightly larger than diversion pipe radius circular hole, as diversion pipe insert port；It should be noted that here
It is slightly larger than, refers to meeting the size that diversion pipe is passed through and welded.
Step 6, diversion pipe is made：4 equalizations are cut along the axis direction for being parallel to diversion pipe in water conservancy diversion pipe end
Groove, the two sides of groove are parallel to diversion pipe axis, and base vertical is in diversion pipe axis, the main view perspective plane of 4 grooves
Circulation area S of the slurry oil that long-pending summation will be calculated with step 2 into flocculator1It is equal；To guarantee diversion pipe and cone
Side panel inner wall securely weld, the tube wall arc length L not being cut between adjacent grooves2It should be between 20~30mm.
Step 7, diversion pipe is aligned with the axis of cone, it then will be on the inside of diversion pipe top and cone flocculator
Top welds together.
Step 8, by cone bottom surface sleeve-board on diversion pipe, in cone bottom by the diagonal line tune of bottom panel weld point
It is whole that bottom panel weld is then fixed on cone bottom to vertical with the diagonal line of diversion pipe pad, while by diversion pipe
Gap welded seal between insert port and diversion pipe is good, to guarantee that assembling is firm.
Step 9, upper flange identical with diversion pipe pressure rating and nominal diameter is welded in the starting point of diversion pipe, so as to
It is connect in other equipment.
Step 10, finally to polishing at each weld and cutting.
Using embodiment 1, the technical solution of embodiment 2 and embodiment 3, creative effect such as 4 institute of embodiment obtained
Show.
Embodiment 4
Apply the present invention in the slurry oil settling tank of chemical assistant sedimentation slurry oil purification techniques, can obtain apparent
Sedimentation separation effect.
Table 1~4 is the slurry oil purified treatment whether China Petroleum subordinate branch company uses rapid flocculation device of the invention
Effect and efficiency comparative's data.
Table 1 is without rapid flocculation device technology (Lanzhou Petrochemical)
Table 2 has rapid flocculation device technology (Dalian petrochemical industry)
Table 3 has rapid flocculation device technology (Daqing Refinery)
Table 4 has rapid flocculation device technology (Guangxi petrochemical industry)
Note：The technical level of catalyst used by domestic catalytic cracking unit is substantially suitable, and technique is also similar, because
This, the slurry oil ash level of most of catalytic cracking units is also suitable；Catalyst granules is the main contribution of ash content in slurry oil
Person, so the general purified treatment effect for measuring slurry oil with grey divided data.
It is the grey divided data for not using rapid flocculation device technology shown in table 1, is to use this hair shown in table 2~4
Bright is used for catalytic cracking again by the grey divided data of the rapid flocculation device technology in settling tank, by comparison, it was found that, use this
After the rapid flocculation device technology of invention, the sedimentation period is obviously shortened, and effect is more preferable.
A kind of rapid flocculation device in catalytic cracked oil pulp settling tank provided by the present invention is for being remarkably improved
The effect and efficiency (speed) of unstability catalyst granules and slurry oil sedimentation separation.According to its principle, it can also be designed and produced into
The rapid flocculation device of his form.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of rapid flocculation device in catalytic cracked oil pulp settling tank, which is characterized in that including working chamber and diversion pipe,
The working chamber is hollow cone, and the cone includes side panel and bottom panel, if having along the cutting of bottom panel edge
Dry notch is as flocculator discharge port, and cutting has a circular hole to be inserted into as diversion pipe using centered on the center of circle of the bottom panel
Mouthful, the diversion pipe is hollow pipe, and the tail end of pipeline has several grooves along tube wall cutting, and the tail end of diversion pipe passes through institute
It states and is welded with the inner wall of side panel after diversion pipe insert port, the groove is in the top on the inside of the cone, and conduct
Flocculator feed inlet.
2. the rapid flocculation device according to claim 1 in catalytic cracked oil pulp settling tank, which is characterized in that described
The shaft section of cone is to push up the isosceles triangle that angle theta is 90 °, the flocculator feed inlet center line and flocculator discharge port
Angle between center line is 45 °.
3. the rapid flocculation device according to claim 2 in catalytic cracked oil pulp settling tank, which is characterized in that described
Flocculator discharge port is 4 and to be uniformly distributed along bottom panel edge, each flocculator discharge port be along bottom panel edge,
Using 4 equally distributed straight lines perpendicular to cone axis as side, cut come with the straight line and bottom panel edge line
The closing notch surrounded.
4. the rapid flocculation device according to claim 2 in catalytic cracked oil pulp settling tank, which is characterized in that described
Groove is 4 and the two sides of each groove are parallel to diversion pipe axis, and base vertical is between diversion pipe axis, adjacent grooves
The tube wall arc length L not being cut2Between 20 ~ 30mm, the starting point of the diversion pipe is equipped with flange.
5. the rapid flocculation device according to claim 2 in catalytic cracked oil pulp settling tank, which is characterized in that described
The side panel and bottom panel of cone are to be made with a thickness of the steel plate of 0.5 ~ 5mm.
6. according to the described in any item rapid flocculation devices in catalytic cracked oil pulp settling tank of claim 2-5, feature
It is,
Residence time, residence time T of the slurry oil in working chamber are used 3-10 seconds；
The feed flow rate of flocculator, flow velocity v of the slurry oil into flocculator1Using 1-2.5 meter per second；
The tapping flowrate of flocculator, slurry oil go out the flow velocity v of flocculator2Using 1-3.5 meter per second；
The treating capacity of flocculator, the treating capacity Q under practical application operating condition, unit is rice3/ the second.
7. the rapid flocculation device according to claim 6 in catalytic cracked oil pulp settling tank, which is characterized in that described
Residence time T of the slurry oil in working chamber is used 5 seconds, flow velocity v of the slurry oil into flocculator1Using 1 meter per second, slurry oil goes out flocculator
Flow velocity v2Using 2.5 meter per seconds.
8. a kind of such as the described in any item production for the rapid flocculation device in catalytic cracked oil pulp settling tank of claim 1-7
Method, which is characterized in that include the following steps：
Step 1, the outer dimension of flocculator is calculated：Based on the treating capacity Q of flocculator, residence time T, cone is calculated
Bus length L1And the radius R of bottom panel1；
Step 2, the circulation area of flocculator feed inlet is calculated：The circulation area of flocculator feed inlet is diversion pipe slurry oil into work
Make the circulation area of chamber, with the feed flow rate v of flocculator1And be calculated based on the treating capacity Q of flocculator flocculator into
The circulation area S of material mouth1；
Step 3, the circulation area of flocculator discharge port is calculated：The circulation area of flocculator discharge port is the slurry oil in working chamber
Into the circulation area of settling tank, with the tapping flowrate v of flocculator2And based on the treating capacity Q of flocculator, oil is calculated
Starch out the circulation area S of flocculator2；
Step 4, the side panel of cone is made：The bus length L being calculated with step 11Based on, using with a thickness of 0.5 ~
The steel plate of 5mm makes cone side panel, and seam crossing is using welding；
Step 5, the bottom panel of cone is made, the radius R of bottom panel to be calculated in step 11Based on, using with a thickness of
The steel plate of 0.5 ~ 5mm makes the bottom panel of cone；Then the slurry oil being calculated in step 3 is gone out to the circulating face of flocculator
Product S2Based on, the area for being divided into 4 flocculator discharge ports is calculated, and be uniformly distributed along bottom panel edge, each flocculator
Discharge port is, using 4 equally distributed straight lines perpendicular to cone axis as side, to cut along bottom panel edge
The closing notch surrounded with the straight line and bottom panel edge line；Then using the geometric center of bottom panel as the center of circle, one is cut
A radius is slightly larger than the circular hole of diversion pipe radius, as diversion pipe insert port；
Step 6, diversion pipe is made：Water conservancy diversion pipe end along the axis direction for being parallel to diversion pipe cut 4 it is impartial recessed
Slot, the two sides of groove are parallel to diversion pipe axis, base vertical in diversion pipe axis, the main view projected area of 4 grooves
Circulation area S of the slurry oil that summation will be calculated with step 2 into flocculator1It is equal；For the side for guaranteeing diversion pipe and cone
Panel inner wall securely welds, the tube wall arc length L not being cut between adjacent grooves2It should be between 20 ~ 30mm.
9. the production method according to claim 8 for the rapid flocculation device in catalytic cracked oil pulp settling tank, special
Sign is, include thes steps that following：
Step 7, diversion pipe is aligned with the axis of cone, then by the top on the inside of diversion pipe top and cone flocculator
Weld together；
Step 8, by cone bottom surface sleeve-board on diversion pipe, the diagonal line of bottom panel weld point is adjusted in cone bottom
It is vertical with the diagonal line of diversion pipe pad, bottom panel weld is then fixed on cone bottom, while diversion pipe being inserted into
Mouth and the gap welded seal between diversion pipe are good；
Step 9, upper flange identical with diversion pipe pressure rating and nominal diameter is welded in the starting point of diversion pipe；
Step 10, finally to polishing at each weld and cutting.
10. the production method according to claim 8 for the rapid flocculation device in catalytic cracked oil pulp settling tank, special
Sign is that the steel plate thickness of the side panel and bottom panel that make cone is 1.5mm；For the side for guaranteeing diversion pipe and cone
Plate inner wall securely welds, the tube wall arc length L not being cut between adjacent grooves2It should be in 20mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018106794493 | 2018-06-27 | ||
| CN201810679449 | 2018-06-27 |
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| CN108854176B CN108854176B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007215398A1 (en) * | 2006-02-17 | 2007-08-23 | Alan Lewis Fitzmaurice | Clarifier |
| CN200980969Y (en) * | 2006-11-30 | 2007-11-28 | 田鸿彬 | Steady flow diffusion device for sedimentation tank output port |
| CN203030884U (en) * | 2013-01-01 | 2013-07-03 | 北京利尔高温材料股份有限公司 | Multihole type immersive type water port for continuous casting |
| CN108002500A (en) * | 2017-12-20 | 2018-05-08 | 中国华电集团科学技术研究总院有限公司 | Cyclone-flocculation device and the high turbid wastewater processing system of coal-burning power plant's high salt and application |
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2018
- 2018-07-03 CN CN201810715611.2A patent/CN108854176B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007215398A1 (en) * | 2006-02-17 | 2007-08-23 | Alan Lewis Fitzmaurice | Clarifier |
| CN200980969Y (en) * | 2006-11-30 | 2007-11-28 | 田鸿彬 | Steady flow diffusion device for sedimentation tank output port |
| CN203030884U (en) * | 2013-01-01 | 2013-07-03 | 北京利尔高温材料股份有限公司 | Multihole type immersive type water port for continuous casting |
| CN108002500A (en) * | 2017-12-20 | 2018-05-08 | 中国华电集团科学技术研究总院有限公司 | Cyclone-flocculation device and the high turbid wastewater processing system of coal-burning power plant's high salt and application |
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| 刘兴旺等: "新型絮凝反应器的设计及应用性能研究", 《工业水处理》 * |
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| CN108854176B (en) | 2020-11-13 |
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