CN112300828B - Device and method for purifying slurry oil - Google Patents
Device and method for purifying slurry oil Download PDFInfo
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- CN112300828B CN112300828B CN202010086886.1A CN202010086886A CN112300828B CN 112300828 B CN112300828 B CN 112300828B CN 202010086886 A CN202010086886 A CN 202010086886A CN 112300828 B CN112300828 B CN 112300828B
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- 239000002002 slurry Substances 0.000 title claims abstract description 272
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 87
- 239000007787 solid Substances 0.000 claims abstract description 42
- 239000002245 particle Substances 0.000 claims abstract description 41
- 238000000746 purification Methods 0.000 claims abstract description 32
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 32
- 239000012141 concentrate Substances 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 2
- 239000006228 supernatant Substances 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 100
- 230000000694 effects Effects 0.000 description 15
- 238000011084 recovery Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 9
- 230000004907 flux Effects 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004523 catalytic cracking Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- 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
- C10G31/09—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by filtration
-
- 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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to the technical field of oil slurry purification, and discloses a purification device and a purification method of oil slurry, wherein the purification device (10) of the oil slurry comprises: a raw material tank (12), the raw material tank (12) having a containing chamber (120) capable of containing slurry oil; and a filtering unit (14), the filtering unit (14) being arranged downstream of the raw material tank (12), and the filtering unit (14) being arranged to be able to receive the slurry discharged from the raw material tank (12) and to filter the slurry to obtain a purified slurry after filtering out solid particles and a concentrated slurry containing solid particles. The purification device of the slurry oil can filter out solid particles in the slurry oil to obtain purified slurry oil, so that the abrasion to downstream equipment can be reduced, and the availability value of the slurry oil is greatly improved.
Description
Technical Field
The invention relates to the technical field of oil slurry purification, in particular to a purification device and a purification method of oil slurry.
Background
Catalytic cracking is one of petroleum refining processes, and processes of converting heavy oil into cracked gas, gasoline, diesel oil and the like under the action of heat and a catalyst are one of main methods for secondary processing of petroleum.
The slurry oil mainly refers to heavy components coming out of the bottom layer of the catalytic device of the refinery and is mainly used as fuel. Typically, the exiting slurry carries catalyst and other solid particles which, in turn, can erode downstream equipment and piping and affect the value of the slurry for reuse and sale.
At present, the sedimentation method, the cyclone centrifugal separation method and the electrostatic separation method are generally adopted in industry to remove solid particles in the slurry oil.
Disclosure of Invention
The invention aims to provide a purifying device for oil slurry, which can filter out solid particles in the oil slurry.
In order to achieve the above object, an aspect of the present invention provides a purification apparatus for slurry oil, comprising:
a raw material tank having a containing chamber capable of containing slurry oil; and
and a filtering unit disposed downstream of the raw material tank and configured to be able to receive the slurry discharged from the raw material tank and filter the slurry to obtain a purified slurry having solid particles filtered and a concentrated slurry having solid particles.
According to the technical scheme, the filtering unit is arranged, so that solid particles such as catalyst particles in the slurry oil can be filtered to obtain purified slurry oil, abrasion to downstream equipment can be reduced, and the available value of the slurry oil is greatly improved.
Preferably, the filter unit comprises a filter assembly comprising a plurality of filters connected in series with each other.
Preferably, the filter unit comprises a plurality of filter assemblies connected in parallel with each other.
Preferably, the purification apparatus of the slurry oil comprises a secondary filtration unit disposed downstream of the filtration unit, the secondary filtration unit comprising a secondary filter configured to be able to receive the concentrated slurry oil discharged by the filtration unit and to filter the concentrated slurry oil again to obtain a secondary purified slurry oil from which solid particles are filtered and a secondary concentrated slurry oil containing solid particles.
Preferably, the purifying device for the slurry oil comprises a buffer tank arranged between the filtering unit and the secondary filtering unit, wherein a buffer tank inlet for the concentrated slurry oil discharged by the filtering unit to enter and a buffer tank outlet for the concentrated slurry oil to be discharged are formed in the buffer tank, and the buffer tank outlet is communicated with the inlet of the secondary filter.
Preferably, the feed tank is provided with a feed-back liquid inlet, the filter comprises a filter shell and a filter element arranged in the filter shell, the filter shell is provided with a clear liquid outlet for discharging the purified oil slurry and a concentrated liquid outlet for discharging the concentrated oil slurry, wherein: the concentrated solution outlet of the filter at the tail end of the filter assembly is respectively communicated with the feed back liquid inlet and the buffer tank inlet; and/or
The secondary filter comprises a secondary filter shell and a secondary filter element arranged in the secondary filter shell, wherein a secondary clear liquid outlet for discharging secondary purified oil slurry and a secondary concentrated liquid outlet for discharging secondary concentrated oil slurry are respectively formed in the secondary filter shell, and the secondary filter comprises a secondary filter shell and a secondary filter element arranged in the secondary filter shell, wherein: the secondary concentrate discharge port of the secondary filter is capable of discharging a portion of the secondary concentrate slurry out of the secondary filter and another portion of the secondary concentrate slurry into the surge tank, respectively.
Preferably, a first heating element capable of heating the slurry oil is arranged in the raw material tank; and/or
And a second heating piece capable of heating the concentrated slurry oil is arranged in the buffer tank.
The second aspect of the present invention provides a method for purifying oil slurry, the method comprising:
step S10: collecting oil slurry;
step S20: filtering the slurry oil collected in the step S10 to obtain purified slurry oil with solid particles filtered and concentrated slurry oil containing the solid particles.
Preferably, the purification method of the slurry oil comprises the following steps:
and step S30, collecting the concentrated slurry obtained in the step S20, and filtering the collected concentrated slurry to obtain secondary purified slurry with filtered solid particles and secondary concentrated slurry containing the solid particles.
Preferably, in said step S10, after collecting the slurry, the slurry is heated; and/or
In the step S30, after the concentrated slurry obtained in the step S20 is collected and before the concentrated slurry is filtered, the concentrated slurry is heated.
Drawings
Fig. 1 is a schematic view showing the overall structure of a slurry purification apparatus according to a preferred embodiment of the present invention.
Description of the reference numerals
10-purifying device of slurry oil; 12-a raw material tank; 120-accommodating chambers; 122-a first heating element; 13-a collection tank; 14-a filtration unit; 140-a filter assembly; 110-a filter; 142-a first outlet manifold; 144-a first control valve; 146-a first transfer pump; 16-a secondary filtering unit; 160-secondary filter; 162-a second export manifold; 164-a second control valve; 166-a second transfer pump; 18-a buffer tank; 180-a second heating element.
Detailed Description
In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, left, right" and the like are used generally to refer to the directions within which the drawings and the actual application are shown, and "inner and outer" refer to the directions within and outside the outline of the components.
The invention provides a purifying device for oil slurry, wherein the purifying device 10 for oil slurry comprises a raw material tank 12, wherein the raw material tank 12 is provided with a containing chamber 120 capable of containing the oil slurry, namely, the oil slurry discharged from the bottom layer of a catalytic device of a refinery can be collected in the raw material tank 12; the purification apparatus 10 of the slurry oil further comprises a filtering unit 14, the filtering unit 14 being arranged downstream of the feed tank 12, and the filtering unit 14 being arranged to be able to receive the slurry oil discharged from the feed tank 12 and to filter said slurry oil to obtain a purified slurry oil after filtering out solid particles and a concentrated slurry oil containing solid particles. By providing the filter unit 14, a purified slurry oil is obtained after filtering out solid particles, such as catalyst particles, which reduces wear on downstream equipment and greatly increases the usable value of the slurry oil. It will be appreciated that the concentrated slurry containing solid particles may be collected to continue to be purified. Wherein the untreated slurry oil has a solid particle content of 500-7000 μg/g.
As shown in fig. 1, the filter unit 14 may include a filter assembly 140, and the filter assembly 140 may include a plurality of, e.g., two filters 110 connected in series with each other. It is understood that each filter 110 may filter to provide a purified slurry oil and a concentrated slurry oil containing solid particles. The filter 110 located at the most upstream of the filter assembly 140 firstly receives the slurry discharged from the raw material tank 12 and filters out solid particles therein to obtain purified slurry and concentrated slurry, and then discharges the concentrated slurry filtered by the most upstream filter 110 to the adjacent downstream filter 110 to be filtered to finally obtain purified slurry and concentrated slurry, so that the concentrated slurry filtered by the upstream filter 110 is discharged to the adjacent downstream filter 110 to be filtered, and thus, the recovery rate of the slurry is greatly improved, for example, the recovery rate of the slurry is more than 98% by the filtering action of the plurality of filters 110, and the recovery efficiency of the slurry is also improved.
It should be noted that, the filter 110 may include a filter housing and a filter element disposed in the filter housing, where the filter housing is provided with a clear liquid outlet for discharging the purified oil slurry and a concentrated liquid outlet for discharging the concentrated oil slurry, and the filter housing is also provided with a filter inlet for entering the concentrated oil slurry. Preferably, a cross-flow membrane filter is selected to improve the filtration efficiency, wherein a ceramic membrane filter core or a metal material membrane filter core is selected.
In order to achieve both the filtration efficiency and the difficulty in blocking the filter element, the filtration accuracy of the filter element is preferably 10-1000 nm, and further preferably, the filtration accuracy of the filter element is preferably 50-200 nm. In addition, the speed of the slurry oil passing through the filter 110 is 1.5-5.0m/s, so that impurities deposited on the filter element can be flushed away in time on the premise of ensuring a good filtering effect, the filter element is not easy to be blocked, the stability of the filtering flux is maintained, and the filtering efficiency is improved.
To further enhance the filtering effect, the filtering unit 14 may include a plurality of, e.g., two, filtering components 140 connected in parallel with each other, such that the slurry discharged from the raw material tank 12 may be respectively introduced into the plurality of filtering components 140 for filtering. Thus, by providing a plurality of filter assemblies 140, recovery rate of slurry oil and recovery efficiency of slurry oil are further improved.
In addition, a first transfer pump 146 may be provided between the raw material tank 12 and the filter unit 14, the first transfer pump 146 being capable of pumping slurry discharged from the raw material tank 12 into the filter assembly 140, and when a plurality of filter assemblies 140 are provided, the first transfer pump 146 being capable of pumping slurry discharged from the raw material tank 12 into the plurality of filter assemblies 140, respectively.
In addition, a first heating member 122 capable of heating the slurry oil may be provided in the raw material tank 12, and the first heating member 122 may heat the slurry oil to 130-320 ℃, so that flux of the slurry oil flowing through the filter 110 may be ensured, thereby improving filtering effect and filtering efficiency, and simultaneously making the filter element not easy to be blocked, and ensuring operation stability of the whole purification apparatus 10.
Preferably, the pressure of the slurry passing through the filter 110 is set to 0.2-1.5Mpa, which ensures both the filtering effect and the flushing of the impurities deposited on the filter cartridge in time.
As shown in fig. 1, a secondary filter unit 16 may be disposed downstream of the filter unit 14, the secondary filter unit 16 may include a secondary filter 160, and the secondary filter 160 may be disposed to be capable of receiving the concentrated slurry discharged from the filter unit 14 and filtering the concentrated slurry again to obtain a secondary purified slurry having filtered solid particles and a secondary concentrated slurry having solid particles, thus further improving the recovery rate of the slurry.
It should be noted that, the secondary filter 160 may include a secondary filter housing and a secondary filter element disposed in the secondary filter housing, where a secondary clear liquid outlet for discharging the secondary purified slurry oil and a secondary concentrated liquid outlet for discharging the secondary concentrated slurry oil are provided on the secondary filter housing, and a secondary filter inlet for entering the concentrated slurry oil is also provided on the secondary filter housing. Preferably, a cross-flow membrane filter is selected to improve the filtration efficiency, wherein a ceramic membrane filter core or a metal material membrane filter core is selected.
In order to achieve both the filtration efficiency and the difficulty in blocking the secondary filter element, the filtration precision of the secondary filter element is preferably 10-1000 nanometers, and further preferably, the filtration precision of the secondary filter element is preferably 50-200 nanometers. In addition, the speed of the concentrated slurry oil passing through the secondary filter 160 is 1.5-5.0m/s, so that impurities deposited on the secondary filter element can be flushed away in time on the premise of ensuring a good filtering effect, the secondary filter element is not easy to be blocked, the stability of the filtering flux is maintained, and the filtering efficiency is improved.
As shown in fig. 1, a buffer tank 18 may be provided between the filtering unit 14 and the secondary filtering unit 16, that is, before the concentrated slurry discharged from the filtering unit 14 is secondarily filtered, the buffer tank 18 may be first introduced, and a buffer tank inlet into which the concentrated slurry discharged from the filtering unit 14 is introduced and a buffer tank outlet from which the concentrated slurry is discharged may be provided on the buffer tank 18, respectively, wherein the buffer tank outlet is in communication with an inlet of the secondary filter 160.
In addition, a second heating member 180 capable of heating the concentrated slurry oil may be provided in the buffer tank 18, and the second heating member 180 may heat the concentrated slurry oil to 130-300 ℃, so that flux of the concentrated slurry oil flowing through the secondary filter 160 may be ensured, thereby improving filtering effect and filtering efficiency, and simultaneously making the secondary filter element not easily blocked, and ensuring operation stability of the whole purification apparatus 10.
Preferably, the pressure of the concentrated slurry oil passing through the secondary filter 160 is 0.2-1.0Mpa, which ensures both the filtering effect and the flushing of the impurities deposited on the secondary filter element in time.
In order to enhance the filtering effect and filtering efficiency while ensuring stable operation of the entire purification apparatus 10, a portion of the concentrated slurry discharged from the filter assembly 140 may be returned to the raw material tank 12.
Wherein, a feed-back liquid inlet can be formed on the raw material tank 12, and the end filter 110 in the filter assembly 140, i.e. the concentrated liquid outlet of the filter 110 at the most downstream of the filter assembly 140, is respectively communicated with the feed-back liquid inlet and the buffer tank inlet, so that a part of concentrated slurry discharged from the concentrated liquid outlet enters the buffer tank 18 for secondary filtration, and the rest of concentrated slurry returns to the raw material tank 12. Preferably, a portion of the concentrated slurry discharged from the concentrate discharge port of the end filter 110 in the filter assembly 140, for example, a substantial portion, is returned to the feed tank 12, thereby improving not only the filtering effect but also the recovery rate of the slurry.
The total amount of purge slurry exiting the filter unit 14 is 80-85% of the total amount of feed to the filter unit 14.
For ease of control, a first outlet manifold 142 may be provided at the concentrate outlet of the end filter 110 in the filter assembly 140 and a first control valve 144 may be provided on the first outlet manifold 142, the first control valve 144 being configured to control the amount of concentrate slurry entering the feed back liquid inlet of the feed tank 12 and the surge tank inlet of the surge tank 18, respectively.
In addition, the secondary concentrate discharge port of the secondary filter 160 is capable of discharging a portion of the secondary concentrate slurry out of the secondary filter 160 and another portion of the secondary concentrate slurry into the buffer tank 18, respectively, it being understood that a portion of the secondary concentrate slurry discharged by the secondary filter 160 may be discharged out of the secondary filter 160, for example, may be discharged into the collection tank 13 for collection, and the remaining portion may be returned into the buffer tank 18, thus not only improving the recovery rate of the slurry, but also further improving the operational stability of the entire purification apparatus 10. Preferably, a substantial portion of the secondary concentrate slurry discharged from the secondary filter 160, for example, may be returned to the surge tank 18.
The total amount of secondary purified slurry oil discharged from secondary filter 160 is 90-95% of the total amount of feed entering secondary filter 160.
For ease of control, a second outlet manifold 162 may be provided at the secondary concentrate outlet of the secondary filter 160 and a second control valve 164 may be provided on the second outlet manifold 162, the second control valve 164 being configured to control the amount of secondary concentrate slurry discharged to the surge tank 18 and the collection tank 13, respectively.
In addition, a second transfer pump 166 may be provided between the surge tank 18 and the secondary filter unit 16, the second transfer pump 166 being capable of pumping the concentrated slurry discharged from the surge tank 18 into the secondary filter 160 of the secondary filter unit 16.
The invention also provides a purification method of the oil slurry, which comprises the following steps: step S10: collecting oil slurry; step S20: filtering the slurry oil collected in the step S10 to obtain purified slurry oil with solid particles filtered and concentrated slurry oil containing the solid particles. Preferably, the slurry oil purification apparatus 10 provided by the present invention can be utilized to purify slurry oil. During filtration, the pressure of the slurry oil can be 0.2-1.5Mpa, so that the filtration flux is ensured, and the filtration effect is improved. In addition, the speed of the slurry oil during filtration can be 1.5-5.0m/s, so that a better filtering effect can be ensured.
The purification method of the slurry oil comprises the following steps: and step S30, collecting the concentrated slurry obtained in the step S20, and filtering the collected concentrated slurry to obtain secondary purified slurry with filtered solid particles and secondary concentrated slurry containing the solid particles. Wherein a portion of the concentrated slurry obtained in step S20 may be collected and the remaining concentrated slurry may be returned to step S10. In addition, a portion of the secondary concentrated slurry oil may be discharged, and the remaining portion of the secondary concentrated slurry oil may be returned to the collecting step in the step S30.
In the step S30, the pressure of the concentrated slurry oil may be maintained at 0.2-1.0Mpa while filtering the collected concentrated slurry oil, thereby ensuring a filtration flux and improving a filtration effect. In addition, the speed of the concentrated slurry oil during filtration can be 1.5-5.0m/s, so that a better filtration effect can be ensured.
In addition, after the slurry is collected in the step S10, the slurry may be heated, preferably, the slurry may be heated to 130-320 ℃, so that the slurry may be better filtered.
In the step S30, after collecting the concentrated slurry obtained in the step S20 and before filtering the concentrated slurry, the concentrated slurry may be heated, preferably, the concentrated slurry may be heated to 130-300 ℃, so that the concentrated slurry may be better filtered.
The effects of the present invention will be further illustrated by examples.
Examples
Example 1
The slurry oil was purified by using the purification apparatus for slurry oil shown in FIG. 1, wherein the content of solid particles in the slurry oil was 4000. Mu.g/g, and the purification process was as follows:
(1) Adding the slurry oil to the raw material tank 12 at a feed rate of 50t/h, and then heating the slurry oil to 130 ℃ by using the first heating member 122;
(2) The slurry in the feed tank 12 is pumped by a first transfer pump 146 into two parallel filter assemblies 140, respectively, the slurry entering the filter assemblies 140 being filtered by two filters 110 in series, wherein: the velocity of the slurry through the filter 110 was 2.5m/s, the pressure of the slurry through the filter 110 was 1.5MPa, and the total displacement of the purified slurry discharged from the filter 110 in the filter unit 14 was 40t/h; the concentrate slurry is discharged from the concentrate discharge port of the endmost filter 110 of the corresponding filter assembly 140 and is discharged through the corresponding first control valve 144 into the feed tank 12 and the surge tank 18, respectively, wherein the concentrate slurry is discharged into the surge tank 18 at a discharge rate of 10 t/h;
(3) Heating the concentrated slurry in buffer tank 18 to 130 ℃;
(4) The heated concentrated slurry is then pumped into the secondary filter 160 using a second transfer pump 166, wherein the velocity of the concentrated slurry through the secondary filter 160 is 2.5m/s, the pressure of the concentrated slurry through the secondary filter 160 is 1.0MPa, the secondary purified slurry exits the secondary filter 160 at a displacement of 9t/h, and the secondary concentrated slurry is discharged into the collection tank 13 and the surge tank 18, respectively, through a second control valve 164, wherein the secondary concentrated slurry is discharged into the collection tank 13 at a displacement of 1 t/h.
Calculated, recovery of slurry = 1- (displacement to collection tank 13/slurry feed) x 100% = 1- (1 t/h/50 t/h) x100% = 98.0%. The average solid content of the resulting purified slurry was 15. Mu.g/g as determined by examination and correlation calculations.
Example 2
The slurry oil was purified by using the purification apparatus for slurry oil shown in FIG. 1, wherein the content of solid particles in the slurry oil was 4000. Mu.g/g, and the purification process was as follows:
(1) Adding the slurry oil to the raw material tank 12 at a feed rate of 50t/h, and then heating the slurry oil to 320 ℃ by using the first heating member 122;
(2) The slurry in the feed tank 12 is pumped by a first transfer pump 146 into two parallel filter assemblies 140, respectively, the slurry entering the filter assemblies 140 being filtered by two filters 110 in series, wherein: the velocity of the slurry oil passing through the filter 110 was 1.5m/s, the pressure of the slurry oil passing through the filter 110 was 0.2MPa, and the total discharge capacity of the purified slurry oil discharged from the filter 110 in the filter unit 14 was 41t/h; the concentrate slurry is discharged from the concentrate discharge port of the endmost filter 110 of the respective filter assembly 140 and is discharged through the respective first control valve 144 into the feed tank 12 and the surge tank 18, respectively, wherein the concentrate slurry is discharged into the surge tank 18 at a discharge rate of 9 t/h;
(3) Heating the concentrated slurry in buffer tank 18 to 300 ℃;
(4) The heated concentrated slurry was then pumped into the secondary filter 160 using a second transfer pump 166, wherein the velocity of the concentrated slurry through the secondary filter 160 was 1.5m/s, the pressure of the concentrated slurry through the secondary filter 160 was 0.2MPa, the secondary purified slurry was discharged from the secondary filter 160 at a discharge rate of 8.1t/h, and the secondary concentrated slurry was discharged into the collection tank 13 and the buffer tank 18, respectively, through a second control valve 164, wherein the discharge rate was 0.9 t/h.
Calculated recovery of slurry = 1- (displacement to collection tank 13/slurry feed) x 100% = 1- (0.9 t/h/50 t/h) x100% = 98.2%. The average solid content of the resulting purified slurry was 18. Mu.g/g as determined by examination and correlation calculations.
Example 3
The slurry oil was purified by using the purification apparatus for slurry oil shown in FIG. 1, wherein the content of solid particles in the slurry oil was 4000. Mu.g/g, and the purification process was as follows:
(1) Adding the slurry oil to the raw material tank 12 at a feed rate of 50t/h, and then heating the slurry oil to 220 ℃ by using the first heating member 122;
(2) The slurry in the feed tank 12 is pumped by a first transfer pump 146 into two parallel filter assemblies 140, respectively, the slurry entering the filter assemblies 140 being filtered by two filters 110 in series, wherein: the velocity of the slurry through the filter 110 was 2.0m/s, the pressure of the slurry through the filter 110 was 0.8MPa, and the total displacement of the purified slurry discharged from the filter 110 in the filter unit 14 was 42.5t/h; the concentrate slurry is discharged from the concentrate discharge port of the endmost filter 110 of the corresponding filter assembly 140 and discharged through the corresponding first control valve 144 into the feed tank 12 and the surge tank 18, respectively, wherein the concentrate slurry is discharged into the surge tank 18 at a discharge rate of 7.5 t/h;
(3) Heating the concentrated slurry in buffer tank 18 to 220 ℃;
(4) The heated concentrated slurry is then pumped into the secondary filter 160 using a second transfer pump 166, wherein the velocity of the concentrated slurry through the secondary filter 160 is 2.0m/s, the pressure of the concentrated slurry through the secondary filter 160 is 0.8MPa, the secondary purified slurry exits the secondary filter 160 at a displacement of 7t/h, and the secondary concentrated slurry is discharged into the collection tank 13 and the surge tank 18, respectively, through a second control valve 164, wherein the secondary concentrated slurry is discharged into the collection tank 13 at a displacement of 0.5 t/h.
Calculated, recovery of slurry = 1- (displacement to collection tank 13/slurry feed) x 100% = 1- (0.5 t/h/50 t/h) x 100% = 99.0%. The average solid content of the resulting purified slurry was 19. Mu.g/g as determined by examination and correlation calculations.
It can be seen that the recovery rate of the slurry oil can be greatly improved and the purifying effect is better by using the purifying device 10 for the slurry oil provided by the invention.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (6)
1. A purification device for slurry oil, characterized in that the purification device (10) for slurry oil comprises:
the oil slurry heating device comprises a raw material tank (12), wherein the raw material tank (12) is provided with a containing chamber (120) capable of containing oil slurry, a first heating element (122) capable of heating the oil slurry is arranged in the raw material tank (12), and a feed back liquid inlet is formed in the raw material tank (12);
a filter unit (14), the filter unit (14) being arranged downstream of the feed tank (12), and the filter unit (14) being arranged to be able to receive the slurry discharged from the feed tank (12) and to filter the slurry to obtain a purified slurry after filtering out solid particles and a concentrated slurry containing solid particles, the filter unit (14) comprising a filter assembly (140), the filter assembly (140) comprising a filter (110), the filter (110) being provided with a clear liquid discharge outlet for the purified slurry discharge and a concentrate discharge outlet for the concentrate discharge, respectively, wherein: the concentrated solution outlet of the filter (110) is respectively communicated with the feed liquid inlet and the buffer tank inlet;
a secondary filter unit (16) arranged downstream of the filter unit (14), the secondary filter unit (16) comprising a secondary filter (160), the secondary filter (160) being arranged to be able to receive the concentrated slurry discharged by the filter unit (14) and to filter the concentrated slurry again to obtain a secondary purified slurry of filtered solid particles and a secondary concentrated slurry of solid particles, the secondary filter (160) being provided with a secondary supernatant discharge outlet for the secondary purified slurry discharge and a secondary concentrate discharge outlet for the secondary concentrated slurry discharge, respectively, wherein: -the secondary concentrate discharge outlet of the secondary filter (160) being capable of discharging a part of the secondary concentrate slurry outside the secondary filter (160) and another part of the secondary concentrate slurry into the buffer tank (18), respectively; and
the buffer tank (18) is arranged between the filtering unit (14) and the secondary filtering unit (16), a second heating piece (180) capable of heating the concentrated slurry oil is arranged in the buffer tank (18), and a buffer tank inlet for the concentrated slurry oil discharged from the filtering unit (14) to enter and a buffer tank outlet for the concentrated slurry oil to be discharged are formed in the buffer tank (18), wherein the buffer tank outlet is communicated with the inlet of the secondary filter (160).
2. The slurry oil purification apparatus according to claim 1, wherein the filter (110) comprises a filter housing and a filter element provided in the filter housing, the filter housing being provided with the clear liquid discharge port and the concentrated liquid discharge port; and/or the number of the groups of groups,
the secondary filter (160) comprises a secondary filter shell and a secondary filter element arranged in the secondary filter shell, and the secondary filter shell is provided with a secondary clear liquid outlet and a secondary concentrated liquid outlet.
3. The slurry purification apparatus according to claim 1 or 2, wherein the filter assembly (140) comprises a plurality of filters (110) connected in series with each other.
4. A slurry purification apparatus according to claim 3, characterized in that the filter unit (14) comprises a plurality of filter assemblies (140) connected in parallel to each other.
5. A slurry purification apparatus according to claim 3, wherein the concentrate discharge outlet of the filter (110) at the end of the filter assembly (140) is in communication with the feed-back liquid inlet and the buffer tank inlet, respectively.
6. A method for purifying slurry oil, characterized in that the method is realized by using the apparatus for purifying slurry oil according to any one of claims 1 to 5, comprising:
step S10: after the slurry oil is collected by using a raw material tank, heating the slurry oil by a first heating element, and heating the slurry oil to 130-320 ℃;
step S20: filtering the slurry oil collected in the step S10 by using the filtering unit to obtain purified slurry oil with filtered solid particles and concentrated slurry oil containing the solid particles, wherein the pressure of the slurry oil is 0.2-1.5Mpa, the filtering speed is 1.5-5m/S, and the filtering accuracy of the filtering unit is 10-1000 nanometers during filtering;
step S30: after collecting a part of the concentrated slurry obtained in the step S20 using the buffer tank, heating the collected concentrated slurry by the second heating member, heating the concentrated slurry to 130-300 ℃, filtering the concentrated slurry using the secondary filtering unit so that the pressure of the concentrated slurry is 0.2-1Mpa and the filtering speed is 1.5-5m/S, obtaining a secondary purified slurry filtering solid particles and a secondary concentrated slurry containing solid particles, wherein the filtering precision of the secondary filtering unit is 10-1000 nanometers, and discharging another part of the concentrated slurry obtained in the step S20 from the filtering unit.
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| CN201910713430.0A CN110317632A (en) | 2019-08-02 | 2019-08-02 | A kind of purification device and method of catalytic cracked oil pulp |
| CN2019107134300 | 2019-08-02 |
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| CN202010086886.1A Active CN112300828B (en) | 2019-08-02 | 2020-02-11 | Device and method for purifying slurry oil |
| CN202020162251.0U Active CN211847820U (en) | 2019-08-02 | 2020-02-11 | Oil slurry purifying device |
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| CN111363584A (en) * | 2020-04-10 | 2020-07-03 | 江苏赛瑞迈科新材料有限公司 | Catalytic cracking slurry oil industrialized solid removal purification device and method |
| CN112063417B (en) * | 2020-09-15 | 2024-01-23 | 襄阳九鼎昊天环保设备有限公司 | Oil slurry separation system and separation method |
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| CN207016732U (en) * | 2017-05-31 | 2018-02-16 | 中石化炼化工程（集团）股份有限公司 | Slurry oil equipment for separating liquid from solid and catalytic cracking system |
| CN109868156A (en) * | 2019-03-07 | 2019-06-11 | 湖南中天元环境工程有限公司 | A kind of catalytic cracked oil pulp filter device and method |
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| CN207016732U (en) * | 2017-05-31 | 2018-02-16 | 中石化炼化工程（集团）股份有限公司 | Slurry oil equipment for separating liquid from solid and catalytic cracking system |
| CN109868156A (en) * | 2019-03-07 | 2019-06-11 | 湖南中天元环境工程有限公司 | A kind of catalytic cracked oil pulp filter device and method |
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