CN115433605A - Medium-low temperature catalytic slurry removal process - Google Patents
Medium-low temperature catalytic slurry removal process Download PDFInfo
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- CN115433605A CN115433605A CN202211080309.7A CN202211080309A CN115433605A CN 115433605 A CN115433605 A CN 115433605A CN 202211080309 A CN202211080309 A CN 202211080309A CN 115433605 A CN115433605 A CN 115433605A
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- low temperature
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- 239000002002 slurry Substances 0.000 title claims abstract description 66
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000007787 solid Substances 0.000 claims abstract description 28
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000004581 coalescence Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 238000010924 continuous production Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002667 nucleating agent Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000008247 solid mixture Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 14
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000002920 hazardous waste Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 4
- 238000004523 catalytic cracking Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/04—Dewatering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/06—Flash distillation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a process for removing catalytic slurry oil at a medium and low temperature, which comprises the following steps: s1, dehydrating: firstly, dehydrating high-solid-content catalytic slurry oil, feeding the high-solid-content catalytic slurry oil into a flash tank, and dehydrating trace water in the catalytic slurry oil under the pressure of micro negative pressure; s2, adding a first additive and mixing: adding a liquid auxiliary agent into the pipeline; s3, adding and mixing the agent for the second time: adding the solid assistant into a mixing tank, and stirring the mixture moderately. The method has the characteristics of wide raw material adaptability, high product yield, good and stable quality, small hazardous waste amount, large economic benefit, stable and efficient device operation and the like by adopting a mode of removing the catalytic slurry oil at the medium and low temperature, does not need other auxiliary facilities and work, does not have additional cost, and in conclusion, the catalytic slurry oil low-temperature coalescence solid removal technology is a technology with economic benefit advantages and can create considerable economic benefit and social benefit for enterprises.
Description
Technical Field
The invention relates to the technical field of catalytic slurry oil treatment, in particular to a process for removing catalytic slurry oil at a medium and low temperature.
Background
The catalytic slurry oil is a byproduct generated by a catalytic cracking unit of a petroleum secondary processing technology, and the yield of the catalytic slurry oil is about 5-8% of the processing amount of the catalytic cracking unit. With the development of refining technology, catalytic slurry oil has become an important industrial raw material for subsequent processing of petroleum refining due to its special physical and chemical properties, high carbon-hydrogen ratio and other characteristics.
The existing catalytic slurry oil solid removal and deashing can not achieve the purposes of long period, high quality and complete solid-liquid separation during separation, seriously influences the subsequent processing and application of the catalytic slurry oil, and has certain limitation during treatment and separation.
Disclosure of Invention
The invention provides a process for removing catalytic slurry oil at medium and low temperature aiming at the defects in the background technology.
The invention adopts the following technical scheme to solve the phenomenon, and the removal method comprises the following steps:
s1, firstly, dehydrating high-solid-content catalytic slurry oil, feeding the dehydrated high-solid-content catalytic slurry oil into a flash tank, and dehydrating trace water in the catalytic slurry oil under the pressure of micro negative pressure;
s2, adding a liquid auxiliary agent into the pipeline;
s3, adding a solid auxiliary agent into the mixing tank, and carrying out moderate stirring;
s4, performing solid-liquid separation on the mixed catalytic oil slurry by adopting filter pressing equipment, and discharging powdery loose solid residues to obtain low-ash oil slurry;
s5, a gas recovery device is adopted to complete the collection work during the collection, so that the organic liquid is recovered, and then the organic liquid is discharged after being treated and reaching the discharge standard;
s6, collecting the oil gas by using a vacuum system, sending the collected oil gas to an organic gas recovery treatment system for recovering the oil gas, and discharging residual liquid in the slag removal process of a solid-liquid separator into a residual liquid collection tank;
s7, pumping the solution back to the coalescence reaction unit so as to realize the effect of repeated reaction filtration;
s8, sending the qualified slurry oil into a finished product storage and delivery unit after the treatment is finished;
and S9, after the treatment work is finished, the solid slag in bulk can be treated by automobile outward transportation.
In a more preferred embodiment of the present invention, in step S1, the temperature of the high solid content catalyst slurry during dehydration is 160 to 180 ℃.
In a further preferred embodiment of the present invention, in step S2, the liquid auxiliary agent is uniformly dispersed in the catalytic slurry by mixing with a mixer during the addition process.
In a further preferred embodiment of the present invention, the auxiliary agent is unloaded to the additive storage and delivery unit in step S2 by being transported to the test apparatus by a vehicle.
In a further preferred mode of the present invention, in step S3, the solid auxiliary agent comprises a solid mixture of a nucleating agent, a particle collector and a filter aid.
As a further preferable mode of the invention, in step S3, the agent adding device is added into the coalescence reaction unit according to the flow rate and the solid content of the slurry raw material according to a certain proportion, and the auxiliary agent and the slurry are mixed in a high-speed and irregular mixing manner by using a circulating pump and special stirring equipment, so that the catalyst powder and the auxiliary agent in the slurry raw material are fully collided with each other and are coalesced into a solid with larger particles.
In a further preferable mode of the invention, in step S4, the pump sends the slurry mixture in the coalescence reaction unit to the filtering and deslagging unit for filtering and separating to obtain qualified catalytic slurry and solid loose powdery filter residue.
As a further preferable mode of the present invention, in step S6, when the pressure difference between the front and the back of one solid-liquid separator of the filtering and deslagging unit reaches a certain value, the other solid-liquid separator is automatically switched to filter, and after the discharged slag solid-liquid separator is purged by nitrogen replacement, automatic slag removal is performed.
As a further preferable mode of the present invention, in step S6, the two units are alternately switched to realize continuous production in the residual liquid collection process.
In a more preferred embodiment of the present invention, in step S7, the effect of the filtration treatment is achieved by using a closed automatic plate filter during the filtration treatment.
The method has the characteristics of wide raw material adaptability, high product yield, good and stable quality, small hazardous waste amount, large economic benefit, stable and efficient device operation and the like by adopting a mode of removing the catalytic slurry oil at the medium and low temperature, does not need other auxiliary facilities and work, does not have additional cost, and in conclusion, the catalytic slurry oil low-temperature coalescence solid removal technology is a technology with economic benefit advantages and can create considerable economic benefit and social benefit for enterprises.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a medium-low temperature catalytic slurry oil removal process comprises the following steps:
s1, firstly, dehydrating high-solid-content catalytic slurry oil, sending the high-solid-content catalytic slurry oil into a flash tank, and dehydrating trace water in the catalytic slurry oil under the pressure of micro negative pressure;
s2, adding a liquid auxiliary agent into the pipeline;
s3, adding a solid assistant into the mixing tank, and stirring the mixture appropriately;
s4, performing solid-liquid separation on the mixed catalytic oil slurry by adopting filter pressing equipment, and discharging powdery loose solid residues to obtain low-ash oil slurry;
s5, a gas recovery device is adopted to complete the collection work during the collection, so that the organic liquid is recovered, and then the organic liquid is discharged after being treated and reaching the discharge standard;
s6, collecting the oil gas by using a vacuum system, then sending the oil gas to an organic gas recovery processing system to recover the oil gas, and discharging residual liquid into a residual liquid collecting tank in the slag removal process of a solid-liquid separator;
s7, pumping the solution back to the coalescence reaction unit so as to realize the effect of repeated reaction filtration;
s8, sending the qualified slurry oil into a finished product storage and delivery unit after the treatment is finished;
and S9, after the treatment work is finished, the solid slag in bulk can be treated by the outward transportation of an automobile.
In the step S1, the temperature of the high-solid content catalytic slurry oil is 160-180 ℃ during dehydration.
In the step S2, the liquid auxiliary agent is required to be mixed by a mixer during the addition process, so that the liquid auxiliary agent is uniformly dispersed in the catalytic slurry.
In step S2, the auxiliary agent needs to be transported to a test device through an automobile and unloaded to an additive storage and transportation unit.
In step S3, the solid auxiliary agent comprises a solid mixture of a nucleating agent, a particle collector and a filter aid.
In the step S3, the agent adding facility is added into the coalescence reaction unit according to the flow rate and the solid content of the oil slurry raw material according to a certain proportion, and the auxiliary agent and the oil slurry are subjected to high-speed irregular mixed flow mixing by using a circulating pump and special stirring equipment, so that the catalyst powder in the oil slurry raw material and the auxiliary agent are fully collided with each other and coalesced into large-particle solid.
And in the step S4, the oil slurry mixed solution in the coalescence reaction unit is sent to a filtering and deslagging unit by a pump for filtering and separating to obtain qualified catalytic oil slurry and solid loose powdery filter residue.
In the step S6, when the front-back pressure difference of one solid-liquid separator of the filtering and deslagging unit reaches a certain value, the other solid-liquid separator is automatically switched to filter, and after the solid-liquid separator is flushed by nitrogen, slag is automatically removed.
In step S6, when the residual liquid is collected and processed, the uninterrupted continuous production processing is realized by the alternate flow switching operation of the two machine sets.
In step S7, a closed automatic plate filter is used to realize the effect of the filtration treatment during the filtration treatment.
In conclusion, the method for removing the catalytic slurry oil at the medium and low temperature has the characteristics of wide raw material adaptability, high product yield, good and stable quality, small amount of hazardous waste, large economic benefit, stable and efficient device operation and the like, does not need other auxiliary facilities and work, does not need additional cost, and can create considerable economic benefit and social benefit for enterprises.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A medium-low temperature catalytic slurry removal process is characterized by comprising the following removal steps:
s1, dehydrating: firstly, dehydrating high-solid-content catalytic slurry oil, feeding the high-solid-content catalytic slurry oil into a flash tank, and dehydrating trace water in the catalytic slurry oil under the pressure of micro negative pressure;
s2, adding and mixing for the first time: adding a liquid auxiliary agent into the pipeline;
s3, adding and mixing the agent for the second time: adding a solid auxiliary agent into a mixing tank, and stirring the mixture appropriately;
s4, filter pressing separation: then, performing solid-liquid separation on the mixed catalytic slurry oil by adopting filter pressing equipment, and discharging powdery loose solid residues to obtain low-ash slurry oil;
s5, collecting water and organic gas: during collection, a gas recovery device is adopted to complete collection work so as to recover organic liquid, and then the organic liquid is treated to reach the discharge standard and can be discharged;
s6, collecting residual liquid: collecting oil gas by using a vacuum system, sending the collected oil gas to an organic gas recovery treatment system for recovering the oil gas, and discharging residual liquid in the slag removal process of a solid-liquid separator into a residual liquid collecting tank;
s7, repeating filtration: pumping the solution back to the coalescence reaction unit so as to realize the effect of repeated reaction filtration;
s8, storing: after the treatment is finished, sending the qualified slurry oil into a finished product storage and delivery unit;
s9, transportation treatment: after the treatment work is finished, the solid slag in bulk can be treated by the outward transportation of an automobile.
2. The process for removing catalytic oil slurry at a medium and low temperature as claimed in claim 1, wherein in the step S1, the temperature of the high solid content catalytic oil slurry during dehydration is 160-180 ℃.
3. The process for removing catalytic slurry oil at a medium and low temperature of claim 1, wherein in the step S2, the liquid auxiliary agent is uniformly dispersed in the catalytic slurry oil by mixing through a mixer in the adding process.
4. The process for removing catalytic oil slurry at medium and low temperature as claimed in claim 1, wherein in step S2, the auxiliary agent is required to be transported to a test device by an automobile and unloaded to an additive storage and transportation unit.
5. The process of claim 1, wherein in step S3, the solid auxiliary agent comprises a solid mixture of a nucleating agent, a particulate trapping agent and a filter aid.
6. The process of claim 1, wherein in step S3, the additive feeding means is added to the coalescence reaction unit according to a predetermined ratio based on the flow rate and solid content of the slurry raw material, and the additive and the slurry are mixed at a high speed and irregularly by using a circulation pump and a special stirring device, so that the catalyst powder in the slurry raw material and the additive are fully collided with each other and coalesced into a large particle solid.
7. The process for removing catalytic oil slurry at a medium and low temperature according to claim 1, wherein in the step S4, the pump sends the oil slurry mixed solution in the coalescence reaction unit to the filtering and deslagging unit for filtering and separating to obtain qualified catalytic oil slurry and solid loose powdery filter residue.
8. The process for removing catalytic oil slurry at medium and low temperature according to claim 1, wherein in the step S6, when the pressure difference between the front and the rear of one solid-liquid separator of the filtering and deslagging unit reaches a certain value, the other solid-liquid separator is automatically switched for filtering, and after the solid-liquid separator is replaced and blown by nitrogen, slag is automatically removed.
9. The process of claim 1, wherein in step S6, the two units are operated alternately to realize continuous production during residual liquid collection.
10. The process for removing catalytic oil slurry at a medium and low temperature of claim 1, wherein in the step S7, a closed automatic plate filter is adopted to realize the effect of the filtration treatment during the filtration treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211080309.7A CN115433605A (en) | 2022-09-05 | 2022-09-05 | Medium-low temperature catalytic slurry removal process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211080309.7A CN115433605A (en) | 2022-09-05 | 2022-09-05 | Medium-low temperature catalytic slurry removal process |
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| CN115433605A true CN115433605A (en) | 2022-12-06 |
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| CN202211080309.7A Pending CN115433605A (en) | 2022-09-05 | 2022-09-05 | Medium-low temperature catalytic slurry removal process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585895B (en) * | 2012-03-14 | 2014-06-18 | 李志英 | Separation method for solid particles in catalytic slurry oil |
| CN109233902A (en) * | 2018-11-08 | 2019-01-18 | 黑龙江省能源环境研究院 | A kind of method of catalyst fines in removing catalytic slurry |
| CN110093186A (en) * | 2018-01-29 | 2019-08-06 | 中国石油化工股份有限公司 | The method of catalytic cracked oil pulp Combined machining |
| CN112480959A (en) * | 2020-11-17 | 2021-03-12 | 茂名市鹰鹏机电设备有限公司 | Method for removing solid impurities in catalytic oil slurry through low-temperature coalescence |
| CN114540073A (en) * | 2020-11-20 | 2022-05-27 | 中国石油天然气股份有限公司 | Method for removing catalyst particles in catalytic cracking slurry oil |
-
2022
- 2022-09-05 CN CN202211080309.7A patent/CN115433605A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585895B (en) * | 2012-03-14 | 2014-06-18 | 李志英 | Separation method for solid particles in catalytic slurry oil |
| CN110093186A (en) * | 2018-01-29 | 2019-08-06 | 中国石油化工股份有限公司 | The method of catalytic cracked oil pulp Combined machining |
| CN109233902A (en) * | 2018-11-08 | 2019-01-18 | 黑龙江省能源环境研究院 | A kind of method of catalyst fines in removing catalytic slurry |
| CN112480959A (en) * | 2020-11-17 | 2021-03-12 | 茂名市鹰鹏机电设备有限公司 | Method for removing solid impurities in catalytic oil slurry through low-temperature coalescence |
| CN114540073A (en) * | 2020-11-20 | 2022-05-27 | 中国石油天然气股份有限公司 | Method for removing catalyst particles in catalytic cracking slurry oil |
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