CN111603845A - Filtering system and filtering method for oil slurry - Google Patents

Filtering system and filtering method for oil slurry Download PDF

Info

Publication number
CN111603845A
CN111603845A CN201910132300.8A CN201910132300A CN111603845A CN 111603845 A CN111603845 A CN 111603845A CN 201910132300 A CN201910132300 A CN 201910132300A CN 111603845 A CN111603845 A CN 111603845A
Authority
CN
China
Prior art keywords
filter
oil
filtering
control module
slurry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910132300.8A
Other languages
Chinese (zh)
Other versions
CN111603845B (en
Inventor
牛传峰
韩勇
戴立顺
王灵萍
胡志海
陈坦
邓中活
肖锦山
邵志才
李莎莎
刘法
叶巍
方强
徐文静
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Samyo Fluid Technology Co ltd
Sinopec Research Institute of Petroleum Processing
China Petroleum and Chemical Corp
Original Assignee
Shanghai Samyo Fluid Technology Co ltd
Sinopec Research Institute of Petroleum Processing
China Petroleum and Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Samyo Fluid Technology Co ltd, Sinopec Research Institute of Petroleum Processing, China Petroleum and Chemical Corp filed Critical Shanghai Samyo Fluid Technology Co ltd
Priority to CN201910132300.8A priority Critical patent/CN111603845B/en
Priority to TW109105549A priority patent/TW202108751A/en
Priority to SG11202109133RA priority patent/SG11202109133RA/en
Priority to KR1020217030361A priority patent/KR20210134678A/en
Priority to US17/432,719 priority patent/US20220152534A1/en
Priority to PCT/CN2020/076016 priority patent/WO2020169064A1/en
Publication of CN111603845A publication Critical patent/CN111603845A/en
Application granted granted Critical
Publication of CN111603845B publication Critical patent/CN111603845B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • 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
    • B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/23—Supported filter elements arranged for outward flow filtration
    • B01D29/27—Filter bags
    • 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
    • B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—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 multiple filtering elements, characterised by their mutual disposition in parallel connection
    • 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
    • B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—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 multiple filtering elements, characterised by their mutual disposition in series connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/04—Controlling the filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C1/00—Working-up tar
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/552—Fatigue strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Filtering Materials (AREA)

Abstract

A filtering system and a filtering method for oil slurry are provided, the filtering system comprises a filtering unit and a control system, wherein filters are arranged in the filtering unit, and an oil slurry inlet pipeline, a filtered oil outlet pipeline and a filter residue discharge pipeline which are respectively communicated with each filter; the control system comprises an online differential pressure monitoring module, a filter control module and a purging control module. In the filtering method, oil slurry enters the filter through an oil slurry inlet pipeline communicated with the filter for filtering, and the filtering process is controlled by the control system. By adopting the filtering system and the filtering method provided by the invention, the long-term stable operation of the oil slurry filtering process is realized, and the problems that the filtering material is easy to be blocked by high-viscosity colloid impurities, the regeneration efficiency is poor and the removal efficiency is low are solved.

Description

Filtering system and filtering method for oil slurry
Technical Field
The invention relates to a filtering system and a filtering method for oil slurry.
Background
Catalytic cracking is an important process technology for producing gasoline and diesel oil by converting heavy oil into light oil, is one of the most important and widely applied technologies in the field of oil refining at present, but produces a byproduct of slurry oil by catalytic cracking, particularly, hydrogenated residual oil or wax oil mixed with the hydrogenated residual oil is mostly adopted as a raw material in the present catalytic cracking process, the yield of the slurry oil is high, generally about 5%, and the yield is even 8%. The oil slurry is rich in polycyclic aromatic hydrocarbon, the polycyclic aromatic hydrocarbon can be used as raw materials for producing ship fuel or carbon black, carbon fiber and the like, but the oil slurry contains about 1-6 g/L of catalytic cracking catalyst particles, so that the requirement of the raw materials for producing the ship fuel or the carbon black, the carbon fiber and the like cannot be met, and the utilization value is low at present.
In order to improve the utilization value of the oil slurry, the solid particles in the oil slurry must be removed firstly. There are various methods for removing solid particles, such as settling, flocculation, centrifugation, etc., but these methods have too low removal efficiency. Filtration is a good method for removing solid particles in oil slurry, but a multi-stage filtration method is adopted to improve the filtration precision.
CN102002385A discloses a device and a method for separating residues from catalytic cracking slurry oil, wherein the device comprises at least two filter groups, each filter group comprises a prefilter and a fine filter, the prefilter is a wedge-shaped metal winding wire filter element, the filtering precision is 2-10 microns, and the fine filter is an asymmetric metal powder sintering filter element, the precision is 0.2-1.0 micron.
CN103865571A describes a method for removing solid particles from heavy oil, wherein a filtering system comprises at least one prefilter and at least two fine filters, wherein the precision of filter elements of the fine filters is better than that of the prefilter, and the prefilter is connected with the fine filters in series. The method for reforming the filter cake of the fresh or backflushed fine filter is to adopt the filtrate filtered by the prefilter to form the filter cake on the fine filter, and not to allow the original liquid to be filtered to directly form the filter cake on the fine filter.
In the prior art, a filter group consisting of a low-precision prefilter and a high-precision fine filter with different precisions is generally adopted for filtering, the manufacturing is complex, and the cost of the fine filter is higher.
Disclosure of Invention
The invention aims to provide a filtering system for oil slurry and an oil slurry filtering method thereof, so as to solve the problems of complex oil slurry filtering process, short operation period, high cost and the like in the prior art.
The invention provides a filtering system for oil slurry, which comprises: a filter unit and a control system;
the filter unit is provided with at least two filters, an oil slurry inlet pipeline, a filtered oil outlet pipeline, a purging medium inlet pipeline and a filter residue discharge pipeline which are respectively communicated with each filter;
a non-pinhole filter bag made of flexible filter materials is arranged in the filter;
the flexible filtering material is selected from one or more of polypropylene, polyethylene, nylon, terylene, polyphenylene sulfide, polyimide, polytetrafluoroethylene, aramid fiber, polyurethane and glass fiber, or a composite material of any two or more of the above materials;
the control system comprises an online differential pressure monitoring module, a filter control module and a purging control module, wherein the online differential pressure monitoring module is used for monitoring the differential pressure of the filter used online, the filter control module is used for controlling the filter switching-in and switching-out of a single filter, and the purging control module is used for controlling the purging process of the filter.
Under the preferable condition, the filtering precision of the flexible filtering material is 2-15 microns; the gram weight of the flexible filtering material is 520-660 g/m2。
In order to achieve better oil slurry filtering effect and prolong the service life of the filter, the warp-wise breaking strength of the flexible filtering material is preferably 850N/5 cm-2400N/5 cm, the weft-wise breaking strength is preferably 1200N/5 cm-2600N/5 cm, and the thickness is preferably 1.8-2.9 mm.
Preferably, the flexible filter material is at least provided with a solid removal layer and a base cloth layer, the porosity of the solid removal layer is 85% -98%, and the porosity of the base cloth layer is 30% -40%.
Preferably, the base fabric layer is polytetrafluoroethylene and/or polyphenylene sulfide. The base cloth layer is made of single polytetrafluoroethylene material, or single polyphenylene sulfide material, or mixed fiber of the two materials.
In one preferred embodiment of the present invention, the base fabric layer is made of polytetrafluoroethylene filament fibers.
In order to achieve a better oil slurry filtering effect, the solid removing layer is preferably polytetrafluoroethylene with a three-dimensional void structure.
The non-pinhole filter bag made of the flexible filter material is adopted in the filter, and the preferred flexible filter material has the characteristics of strong chemical stability, good wear resistance and fatigue resistance, strong particulate interception performance, high filter precision and good material strength.
The flexible filtering material adopted by the invention is at least provided with the curing layer and the base cloth layer, but the flexible filtering material is not limited to the curing layer and the base cloth layer, and can be changed and derived on the basis.
In a preferred embodiment of the present invention, the flexible filtering material is added with a layer on the basis of the above-mentioned release layer and the base fabric layer. Namely, the flexible filtering material is at least 3 layers, namely a solid removing layer, a base cloth layer and an inner layer, wherein the inner layer is fibers with the fineness of 1-3D formed by needling or spunlacing on the base cloth layer. The fiber is one or more selected from polypropylene, polyethylene, nylon, terylene, polyphenylene sulfide, polyimide, polytetrafluoroethylene, aramid fiber, polyurethane and glass fiber; preferably one or more selected from polyimide, polytetrafluoroethylene, polyphenylene sulfide and glass fiber. Preferably, the inner layer is added with high-strength fibers, so that the strength of the flexible filtering material can be further improved, and the plastic deformation of the flexible filtering material under the action of long-time continuous load is reduced. In the invention, when the flexible filtering material is at least the solid removing layer, the base cloth layer and the inner layer, the material and specific parameters of the solid removing layer and the base cloth layer are consistent with those of the solid removing layer and the base cloth layer.
In a preferred embodiment of the present invention, the flexible filtering material is added with two layers on the basis of the above-mentioned release layer and the base fabric layer. The flexible filter material is at least 4 layers, namely a de-fixing layer, a precision layer, a base fabric layer and an inner layer, wherein the precision layer is made of superfine fibers with the needle punching or water punching fineness of 0.2-0.3D, and the inner layer is made of fibers with the needle punching or water punching fineness of 1-3D. The superfine fiber of the precision layer is one or more selected from polypropylene, polyethylene, nylon, terylene, polyphenylene sulfide, polyimide, polytetrafluoroethylene, aramid fiber, polyurethane and glass fiber; preferably one or more selected from polyimide, polytetrafluoroethylene, polyphenylene sulfide and glass fiber. The fiber of the inner layer is one or more selected from polypropylene, polyethylene, nylon, terylene, polyphenylene sulfide, polyimide, polytetrafluoroethylene, aramid fiber, polyurethane and glass fiber; preferably one or more selected from polyimide, polytetrafluoroethylene, polyphenylene sulfide and glass fiber.
Preferably, the fiber with smaller fineness is added into the precision layer, and a three-dimensional structure is formed due to the interaction among the superfine fibers, so that the filtering efficiency and the filtering precision of the flexible filtering material can be further improved. On the other hand, the surface contact area and the surface tension are enlarged, so that the stripping layer and the precision layer are more firmly adhered, and the stripping is avoided, thereby further prolonging the service life of the filter. In the invention, when the flexible filtering material is at least a solid removing layer, a precision layer, a base cloth layer and an inner layer, the material and specific parameters of the solid removing layer and the base layer are consistent with those of the solid removing layer and the base layer.
In a preferable case, the non-pinhole filter bag made of the flexible filter material is prepared by adopting a sewing process, and the sewing holes are sealed by using an acid sealant material.
In a preferable case, the lower part of the filter is provided with an oil slurry inlet, the upper part of the filter is provided with a filtered oil outlet, and the bottom of the filter is provided with a filter residue outlet.
In a preferred aspect, the filter of the present invention is provided with a purge medium inlet. It is further preferred that the purge medium inlet is provided at the top of the filter and/or at the upper part of the filter.
In one preferred embodiment of the invention, a purge medium buffer tank is included in the filtration system, and an outlet of the purge medium buffer tank is communicated with the filter purge medium inlet.
In the present invention, the control system includes an online differential pressure monitoring module, a filter control module, and a purge control module. Preferably, the online differential pressure monitoring module comprises a pressure gauge or a differential pressure gauge arranged on an oil slurry inlet pipeline and a filtered oil outlet pipeline of each filter; the filter control module comprises control valves arranged on an oil slurry inlet pipeline, a filtered oil outlet pipeline and a filter residue discharge pipeline of each filter; the purge control module includes a control valve disposed on the purge medium inlet line of each filter.
In the present invention, two filters may be provided in the filter unit, or three or more filters may be provided. The present invention does not limit the manner of connection between the filters. The plurality of filters can be arranged in parallel or in series. When a plurality of filters are provided, a plurality of filters having the same filtering accuracy may be used, or a plurality of filters having different filtering accuracies may be used.
According to the oil slurry filtering system provided by the invention, the non-pinhole filter bag made of the flexible filtering material is adopted in the filter, and the preferable flexible filtering material has the characteristics of strong interception on particles, high filtering precision and good material strength. Due to the adoption of the flexible filtering material, the defect that the hard filtering material is easy to be blocked by fine solid particles is overcome, the filtering efficiency is improved, and the operation period of the oil slurry filtering system is prolonged. In addition, the oil slurry filtering system provided by the invention has the characteristics of convenience in slag unloading, good back flushing effect and good regeneration performance of filtering materials.
The invention also provides an oil slurry filtering method, which adopts any one of the filtering systems, and comprises the following steps:
(1) the filter unit is provided with at least two filters, the oil slurry enters at least one on-line filter for filtering through an oil slurry inlet pipeline communicated with the filters, a non-pinhole filter bag made of flexible filter materials is arranged in the filters, and filtered oil is pumped out from a filtered oil outlet pipeline;
(2) the control system comprises an online differential pressure monitoring module, a filter control module and a purging control module, wherein the online differential pressure monitoring module is used for monitoring the differential pressure of an online filter, the filter control module is used for controlling the cut-in and cut-out of the filter system of a single filter, and the purging control module is used for controlling the back purging stroke of the filter;
when the online pressure difference monitoring module monitors that the pressure difference of the online filter reaches or is higher than a set value, the standby filter is switched into the filter system through the filter control module, the filter with the pressure difference reaching or higher than the set value is switched into the filter system, and the filter of the switched filter system is subjected to slag discharge and back flushing through the purging medium by the purging control module;
the slurry is a liquid hydrocarbon with particulate impurities. Preferably, the oil slurry is catalytic cracking oil slurry and/or coal tar.
Preferably, the purging medium is an inert gas and/or a flushing oil. The inert gas is a gas which does not react with the oil slurry and the particles in the filtering system, and is preferably nitrogen. In some cases, fuel gas may also be selected. The flushing oil is preferably filtered oil, which may be the filtered oil obtained by the filtration system itself.
Preferably, the filtering temperature in the in-line filter is 30 to 250 ℃, more preferably 50 to 240 ℃, and even more preferably 60 to 180 ℃.
Preferably, the pressure difference of the in-line filter is 0.01 to 0.5 MPa. The pressure difference set value monitored by the online pressure difference monitoring module is set in the range. Since the filter cake formed on the flexible filter material contributes to further improvement of the filtration separation efficiency, the present invention preferably employs a filtration method in which the pressure difference is monitored to control the thickness of the filter cake.
The invention also provides another oil slurry filtering method, which adopts any one of the filtering systems, and comprises the following steps:
(1) the filter unit is provided with at least two filters, the oil slurry enters at least one on-line filter for filtering through an oil slurry inlet pipeline communicated with the filters, a non-pinhole filter bag made of flexible filter materials is arranged in the filters, and filtered oil is pumped out from a filtered oil outlet pipeline;
(2) the control system comprises an online differential pressure monitoring module, a filter control module and a purging control module, wherein the online differential pressure monitoring module is used for monitoring the differential pressure of an online filter, the filter control module is used for controlling the cut-in and cut-out of the filter system of a single filter, and the purging control module is used for controlling the back purging stroke of the filter;
when the online differential pressure monitoring module monitors that the differential pressure of the online filter reaches a set value, the standby filter is switched into the filtering system through the filter control module, after a filter cake is formed on a non-porous filter bag of the standby filter, the online filter with the differential pressure reaching or higher than the set value is switched into the filtering system, and the filter of the switched-out filtering system is subjected to slag discharge and back flushing through the purging control module;
the slurry is a liquid hydrocarbon with particulate impurities. Preferably, the oil slurry is catalytic cracking oil slurry and/or coal tar.
Preferably, after the back-up filter is cut into the filtration system, the post-filtration oil outlet line of the back-up filter is communicated by the filter control module to the feed surge tank or to the reject post-filtration oil line before a filter cake is formed on the non-porous filter bag of the filter.
Preferably, the purging medium is an inert gas and/or a flushing oil. The inert gas is a gas which does not react with the oil slurry and the particles in the filtering system, and is preferably nitrogen. In some cases, fuel gas may also be selected. The flushing oil is preferably filtered oil, which may be the filtered oil obtained by the filtration system itself.
Preferably, the filtering temperature in the in-line filter is 30 to 250 ℃, more preferably 50 to 240 ℃, and even more preferably 60 to 180 ℃.
Preferably, the pressure difference of the in-line filter is 0.01 to 0.5 MPa. The pressure difference set value monitored by the online pressure difference monitoring module is set in the range. Since the filter cake formed on the flexible filter material contributes to further improvement of the filtration separation efficiency, the present invention preferably employs a filtration method in which the pressure difference is monitored to control the thickness of the filter cake.
In the invention, the filter residue discharged by the liquid mixture has good fluidity and can be discharged out of the filtering system; or directly returning to the process for reuse according to the process requirement; the filter cake can also be stabilized at the filter, dried and discharged directly from the filter system in the form of a completely solidified filter residue.
Compared with the prior art, the filtering system and the filtering method for the oil slurry provided by the invention can realize long-term stable operation of high-concentration colloid-containing viscous catalyst materials, and solve the problems that the filtering material is easy to be blocked by high-viscosity colloid impurities, the regeneration efficiency is poor and the removal efficiency is low. And the slag discharging mode is flexible, and the problem of environmental pollution caused by organic materials of the catalyst is effectively solved.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a filtration system provided by the present invention.
FIG. 2 is a schematic view of another embodiment of a filtration system provided by the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the invention is not limited thereto.
FIG. 1 is a schematic diagram of one embodiment of a filtration system provided by the present invention. As shown in fig. 1, the filtering system for oil slurry provided by the present invention comprises a filtering unit and a control system, wherein the filtering unit is provided with a filter 1, a filter 3, an oil slurry inlet pipeline 5 communicated with the filter 1, a filtered oil outlet pipeline 7 and a residue discharge pipeline 9; an oil slurry inlet line 6 communicating with the filter 3, a filtered oil outlet line 8, and a residue discharge line 10. A non-pinhole filter bag 2 made of flexible filtering materials is arranged in the filter 1; a non-pinhole filter bag 4 made of flexible filtering materials is arranged in the filter 3; the flexible filtering material is selected from one or more of polypropylene, polyethylene, nylon, terylene, polyphenylene sulfide, polyimide, polytetrafluoroethylene, aramid fiber, polyurethane and glass fiber, or a material formed by compounding more than any two of the above materials. A purging medium inlet is arranged at the top of the filter 1 and is communicated with a purging medium inlet pipeline 11; the upper part of the filter 1 is provided with a purging medium inlet and is in communication with a purging medium inlet line 13. A purging medium inlet is arranged at the top of the filter 3 and is communicated with a purging medium inlet pipeline 12; the upper part of the filter 3 is provided with a purging medium inlet and is in communication with a purging medium inlet line 14. The control system comprises an online differential pressure monitoring module, a filter control module 16 and a purging control module 17, wherein the online differential pressure monitoring module is used for monitoring the differential pressure of the filter used online, the filter control module 16 is used for controlling the cut-in and cut-out of the filter system of a single filter, and the purging control module 17 is used for controlling the purging process of the filter.
The filter is switched between filtering and back purging by controlling the valve switch through the control system. The designation of valves on each line below designates each valve by the line number plus V. The operation of the filter is illustrated by connecting two filters in parallel in fig. 1, a valve V5 and a valve V7 are opened through a filter control module 16, the other valves are closed, the filter 1 firstly performs the filtering operation, when an online differential pressure monitoring module detects that the pressure difference between the inlet and the outlet of the filter 1 reaches a set value, a valve V5 and a valve V7 are closed through the filter control module 16 to cut the filter 1, a valve 6 and a valve 8 are opened to cut the filter 3 into a filtering system, and a valve V13 and a valve V9 are opened through a purging control module 17 to perform back purging on the filter 1 by using inert gas or perform back purging by using filtered oil. When the online pressure difference monitoring module detects that the pressure difference between the inlet and the outlet of the filter 3 reaches a set value, the valve V6 and the valve V8 are closed, the filter 3 is cut out, the valve V5 and the valve V7 are opened, and the filter 1 which is subjected to back flushing or back flushing is used for filtering. The valve V14 and the valve V10 are opened through the purging control module 17, and the filter 3 is subjected to back flushing by adopting inert gas or distillate oil; this is repeated.
FIG. 2 is a schematic view of another embodiment of a filtration system provided by the present invention. Fig. 2 is a view according to fig. 1 with the addition of a communication line 15 between the filtered oil outlet of the filter 1 and the slurry inlet of the filter 3.
When the filtering system shown in fig. 2 is used for filtering, the filter 1 and the filter 3 can be used in parallel, in series or in a switching manner. When the filter 1 is switched to be used and filtered on line, the filter 3 is simultaneously purged or in a standby state; or when the filter 3 is on-line, the filter 1 is simultaneously purged or in a standby state. As shown in fig. 2, when the valves V5, V7, V15, V6, V8 are opened and the other valves are closed, the series operation of filter 1 before and filter 3 after can be performed.
The invention will now be further illustrated with reference to the following examples, without thereby being restricted thereto.
Examples 1 to 3
The filtration system shown in fig. 1 is adopted, and two filters are arranged in a filtration unit of the filtration system, and a non-pinhole filter bag made of flexible filtration materials is arranged in the filters. The flexible filtering material is provided with a solid removing layer and a base cloth layer, and specific property parameters are shown in table 1.
TABLE 1
Figure BDA0001975801860000101
Examples 4 to 5
With the filtering system shown in fig. 2, two filters are disposed in the filtering unit, and both filters are provided with non-pinhole filter bags made of flexible filtering materials. The flexible filtering material is provided with a solid removing layer, a base cloth layer and an inner layer, and specific property parameters are shown in table 2.
TABLE 2
Figure BDA0001975801860000102
Figure BDA0001975801860000111
Examples 6 to 8
By adopting the filtering system shown in the attached figure 1, two filters are arranged in a filtering unit of the filtering system, and a non-pinhole filtering bag made of flexible filtering materials is arranged in each filter. The flexible filtering material is provided with a solid removing layer, a precision layer, a base cloth layer and an inner layer, and specific property parameters are shown in tables 3, 4 and 5.
TABLE 3
Figure BDA0001975801860000112
TABLE 4
Figure BDA0001975801860000121
TABLE 5
Figure BDA0001975801860000122
Examples 9 to 11
This set of examples is presented to illustrate the slurry filtration process using the filtration system of examples 1-3. The properties of the slurry to be filtered are shown in table 6.
In example 9, slurry a was filtered by entering the filtration system described in example 1 through a slurry inlet line communicating with a filter, and filtered oil was withdrawn from a filtered oil outlet line. The filtration temperature of the filter was 100 ℃. The on-line pressure difference monitoring module is used for detecting the pressure difference of the on-line filter, the filter is switched and the cut-out filter is subjected to back blowing when the pressure difference is set to be 0.12MPa, the nitrogen at 100 ℃ is used for back blowing, and the two filters are operated in turn. The filtered oil was collected at a differential pressure of 0.04MPa and analyzed to have a solid particulate content of 253. mu.g/g.
In example 10, slurry B was filtered through a slurry inlet line communicating with a filter into the filter described in example 2, and filtered oil was withdrawn from a filtered oil outlet line. The filtering temperature of the filter is 180 ℃, the pressure difference of the on-line filter is detected by the on-line pressure difference monitoring module, the filter is switched and the cut-out filter is subjected to back blowing when the pressure difference is set to be 0.30MPa, the back blowing is carried out by using nitrogen at 180 ℃, and the two filters are operated in turn. The filtered oil was collected starting at a filter pressure differential of 0.04 MPa. The collected filtered oil was analyzed and the solid particulate content was 456. mu.g/g.
In example 11, slurry C was filtered through a slurry inlet line communicating with a filter into the filter described in example 3, and filtered oil was withdrawn from a filtered oil outlet line. The filtering temperature of the filter is 250 ℃, the pressure difference of the on-line filter is detected by the on-line pressure difference monitoring module, the filter is switched and the cut-out filter is subjected to back blowing when the pressure difference is set to be 0.45MPa, the back blowing is carried out by using nitrogen at 250 ℃, and the two filters are operated in turn. The collection of the filtered oil was started at a differential pressure of 0.05MPa across the filter and the collected filtered oil was analyzed to have a solid particulate content of 1038. mu.g/g.
TABLE 6
Oil slurry A Oil slurry B Oil slurry C
Density (g/cm)3) 1.139 1.086 1.148
Viscosity (mm) at 100 ℃2/s) 42 31 65
Solid particle content (μ g/g) 1902 3866 9893
Examples 12 to 13
This set of examples is presented to illustrate the slurry filtration process using the filtration systems of examples 4-5. The properties of the coal tar to be filtered are shown in table 7.
In example 12, coal tar a was filtered through a slurry inlet line communicating with a filter into the filter described in example 4, and filtered oil was withdrawn from a filtered oil outlet line. The filtering temperature of the filter is 60 ℃, the pressure difference of the online filter is detected by the online pressure difference monitoring module, the standby filter is switched into the filtering system when the pressure difference is set to be 0.3MPa, the online filter with the pressure difference reaching 0.3MPa is switched into the filtering system when the pressure difference of the switched standby filter is 0.04MPa, the online filter is subjected to back blowing, normal-temperature nitrogen is used for back blowing, and the two filters are operated in turn. The collection of the filtered oil was started at a differential pressure of 0.04MPa and the collected filtered oil was analyzed to have a solid particulate content of 463. mu.g/g.
In example 13, coal tar B was filtered through a slurry inlet line communicating with a filter into the filter described in example 5, and filtered oil was withdrawn from a filtered oil outlet line. The filtering temperature of the filter is 80 ℃, the pressure difference of the filter used on line is detected by an on-line pressure difference monitoring module, the filter is switched and the cut filter is subjected to back blowing when the pressure difference is set to be 0.35MPa, and the 80 ℃ nitrogen is used for back blowing. The two filters operate in turn. The collection of the filtered oil was started at a differential pressure of 0.04MPa and the collected filtered oil was analyzed to have a solid particulate content of 706. mu.g/g.
TABLE 7
Coal tar A Coal tar B
Density (g/cm3) 1.13 1.17
Viscosity at 100 ℃ (mm2/s) 2.6 3.1
Solid particle content (μ g/g) 5357 9018
Examples 14 to 16
This set of examples is presented to illustrate the slurry filtration process using the filtration systems of examples 6-8. The properties of the slurry to be filtered are shown in table 6.
In example 14, slurry a was filtered through a slurry inlet line communicating with a filter into the filter described in example 6, and filtered oil was withdrawn from a filtered oil outlet line. The filtering temperature of the filter is 130 ℃, and the valve V15 is always closed. The on-line pressure difference monitoring module is used for detecting the pressure difference of the on-line filter, the filter is switched and the cut-out filter is subjected to back blowing when the pressure difference is set to be 0.35MPa, the nitrogen at 130 ℃ is used for back blowing, and the two filters are operated in turn. The collection of the filtered oil was started at a differential pressure of 0.05MPa across the filter, and the collected filtered oil was analyzed to have a solid particulate content of 146. mu.g/g.
In example 15, slurry B was filtered through a slurry inlet line communicating with a filter into the filter described in example 7, and filtered oil was withdrawn from a filtered oil outlet line. The filtration temperature of the filter is 150 ℃, and the valve V15 is always closed. The on-line pressure difference monitoring module is used for detecting the pressure difference of the on-line filter, the filter is switched and the cut-out filter is subjected to back blowing when the pressure difference is set to be 0.18MPa, the nitrogen at 150 ℃ is used for back blowing, and the two filters are operated in turn. The filtered oil was collected at a differential pressure of 0.04MPa and analyzed to give a solid particulate content of 331. mu.g/g.
In example 16, slurry C was filtered through a slurry inlet line communicating with the filter into the filter described in example 8, valves V5, V7, V15, V6, and V8 were opened, and the remaining valves were closed, with the two filters changed to a series configuration with filter 1 after the front filter 3. Filtered oil is withdrawn from the filtered oil outlet line. The filtering temperature of the filter is 180 ℃, the pressure difference of the on-line filter is detected by an on-line pressure difference monitoring module, the two filters are cut out when the total pressure difference is set to be 0.45MPa in the filtering process, the cut-out two filters are respectively subjected to back blowing, and the 150 ℃ nitrogen is respectively subjected to back blowing. The collection of the filtered oil was started when the total pressure difference of the filter was 0.06MPa, and the collection of the filtered oil was stopped when the total pressure difference reached 0.45 MPa. The collected filtered oil was analyzed and had a solid particulate content of 875 μ g/g.

Claims (25)

1. A filtration system for oil slurry comprising: a filter unit and a control system;
the filter unit is provided with at least two filters, an oil slurry inlet pipeline, a filtered oil outlet pipeline, a purging medium inlet pipeline and a filter residue discharge pipeline which are respectively communicated with each filter;
a non-pinhole filter bag made of flexible filter materials is arranged in the filter;
the flexible filtering material is selected from one or more of polypropylene, polyethylene, nylon, terylene, polyphenylene sulfide, polyimide, polytetrafluoroethylene, aramid fiber, polyurethane and glass fiber, or a composite material of any two or more of the above materials;
the control system comprises an online differential pressure monitoring module, a filter control module and a purging control module, wherein the online differential pressure monitoring module is used for monitoring the differential pressure of the filter used online, the filter control module is used for controlling the filter switching-in and switching-out of a single filter, and the purging control module is used for controlling the purging process of the filter.
2. The filtration system of claim 1, wherein the flexible filter material has a filtration accuracy of 2 to 15 microns; the gram weight of the flexible filtering material is 520-660 g/m2；
The warp breaking strength of the flexible filtering material is 850N/5 cm-2400N/5 cm, the weft breaking strength is 1200N/5 cm-2600N/5 cm, and the thickness is 1.8-2.9 mm.
3. The filtration system of claim 1 or 2, wherein the flexible filtration material comprises at least a consolidation layer and a scrim layer, the consolidation layer having a porosity of 85% to 98% and the scrim layer having a porosity of 30% to 40%.
4. A filter system according to claim 3, wherein said scrim layer is polytetrafluoroethylene and/or polyphenylene sulfide.
5. The filtration system of claim 4, wherein said base layer is formed from polytetrafluoroethylene filament fibers.
6. The filtration system of claim 3, wherein the flexible filtration material comprises at least 3 layers, namely a release layer, a base fabric layer and an inner layer, and the inner layer is fibers with the fineness of 1-3D formed by needle punching or water needling on the base fabric layer.
7. A filter system according to claim 6, wherein the fibres of the inner layer are selected from one or more of polyimide, polytetrafluoroethylene, polyphenylene sulphide and glass fibres.
8. The filtration system of claim 3, wherein the flexible filtration material comprises at least 4 layers, namely a release layer, a precision layer, a base fabric layer and an inner layer, the precision layer is made of superfine fibers with the fineness of 0.2-0.3D by needling or water punching on the base fabric layer, and the inner layer is made of fibers with the fineness of 1-3D by needling or water punching on the base fabric layer.
9. The filtration system of claim 8, wherein the fibers of the inner layer are selected from one or more of polyimide, polytetrafluoroethylene, polyphenylene sulfide, and glass fiber; the superfine fiber of the precision layer is selected from one or more of polyimide, polytetrafluoroethylene, polyphenylene sulfide and glass fiber.
10. A filtration system according to claim 3, wherein said de-consolidation layer is polytetrafluoroethylene having a three-dimensional void structure.
11. The filtration system of claim 1, wherein the lower portion of the filter is provided with an oil slurry inlet, the upper portion of the filter is provided with a filtered oil outlet, and the bottom of the filter is provided with a residue outlet; the filter is provided with a purge media inlet.
12. A filtration system according to claim 11, wherein the filtration system includes a purge media buffer tank, the outlet of the purge media buffer tank being in communication with the filter purge media inlet.
13. The filtration system of claim 1, wherein the non-pin hole filter bag of flexible filter material is made by a sewing process, wherein the sewn holes are sealed with an acid sealant material.
14. The filtration system of claim 1, wherein the in-line differential pressure monitoring module comprises a pressure gauge or differential pressure gauge disposed on the slurry inlet line and the filtered oil outlet line of each filter;
the filter control module comprises control valves arranged on an oil slurry inlet pipeline, a filtered oil outlet pipeline and a filter residue discharge pipeline of each filter;
the purge control module includes a control valve disposed on the purge medium inlet line of each filter.
15. A method of filtering an oil slurry using the filtration system of any one of claims 1 to 14, comprising:
(1) the filter unit is provided with at least two filters, the oil slurry enters at least one on-line filter for filtering through an oil slurry inlet pipeline communicated with the filters, a non-pinhole filter bag made of flexible filter materials is arranged in the filters, and filtered oil is pumped out from a filtered oil outlet pipeline;
(2) the control system comprises an online differential pressure monitoring module, a filter control module and a purging control module, wherein the online differential pressure monitoring module is used for monitoring the differential pressure of an online filter, the filter control module is used for controlling the cut-in and cut-out of the filter system of a single filter, and the purging control module is used for controlling the back purging stroke of the filter;
when the online pressure difference monitoring module monitors that the pressure difference of the online filter reaches or is higher than a set value, the standby filter is switched into the filter system through the filter control module, the filter with the pressure difference reaching or higher than the set value is switched into the filter system, and the filter of the switched filter system is subjected to slag discharge and back flushing through the purging medium by the purging control module;
the slurry is a liquid hydrocarbon with particulate impurities.
16. A method according to claim 15, characterized in that the purging medium is an inert gas and/or a flushing oil, preferably the flushing oil is a filtered oil.
17. The method according to claim 15, wherein the filtration temperature in the in-line filter is 30 to 250 ℃, preferably 50 to 240 ℃, more preferably 60 to 180 ℃.
18. The method of claim 15, wherein the pressure difference of the in-line filter is 0.01 to 0.5 MPa.
19. The method of claim 15, wherein the slurry oil is a catalytic cracking slurry oil and/or coal tar.
20. A method of filtering an oil slurry using the filtration system of any one of claims 1 to 14, comprising:
(1) the filter unit is provided with at least two filters, the oil slurry enters at least one on-line filter for filtering through an oil slurry inlet pipeline communicated with the filters, a non-pinhole filter bag made of flexible filter materials is arranged in the filters, and filtered oil is pumped out from a filtered oil outlet pipeline;
(2) the control system comprises an online differential pressure monitoring module, a filter control module and a purging control module, wherein the online differential pressure monitoring module is used for monitoring the differential pressure of an online filter, the filter control module is used for controlling the cut-in and cut-out of the filter system of a single filter, and the purging control module is used for controlling the back purging stroke of the filter;
when the online differential pressure monitoring module monitors that the differential pressure of the online filter reaches a set value, the standby filter is switched into the filtering system through the filter control module, after a filter cake is formed on a non-porous filter bag of the standby filter, the online filter with the differential pressure reaching or higher than the set value is switched into the filtering system, and the filter of the switched-out filtering system is subjected to slag discharge and back flushing through the purging control module;
the slurry is a liquid hydrocarbon with particulate impurities.
21. A method according to claim 20, wherein the purging medium entering the purging medium inlet line is an inert gas and/or a flushing oil, preferably the flushing oil is a filtered oil.
22. The method according to claim 20, wherein the filtration temperature in the in-line filter is 30 to 250 ℃, preferably 50 to 240 ℃, more preferably 60 to 180 ℃.
23. The method of claim 20, wherein the pressure difference of the in-line filter is 0.01 to 0.5 MPa.
24. The method of claim 20, wherein after the back-up filter is switched into the filtration system, the post-filter oil outlet line of the filter is communicated by the filter control module to either the feed surge tank or the reject post-filter oil line before a filter cake is formed on the non-porous filter bag of the back-up filter.
25. The process of claim 20, wherein the slurry oil is a catalytic cracking slurry oil and/or coal tar.
CN201910132300.8A 2019-02-20 2019-02-22 Filtering system and filtering method for oil slurry Active CN111603845B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN201910132300.8A CN111603845B (en) 2019-02-22 2019-02-22 Filtering system and filtering method for oil slurry
TW109105549A TW202108751A (en) 2019-02-20 2020-02-20 Oil slurry filter, oil slurry filtering unit containing the same, oil slurry filtering system and oil slurry filtering method
SG11202109133RA SG11202109133RA (en) 2019-02-20 2020-02-20 Oil slurry filter, oil slurry filter unit and oil slurry filter system containing the same, and oil slurry filtering process
KR1020217030361A KR20210134678A (en) 2019-02-20 2020-02-20 Oil slurry filter, oil slurry filter unit, oil slurry filter system including same, and oil slurry filtration method
US17/432,719 US20220152534A1 (en) 2019-02-20 2020-02-20 Oil slurry filter, oil slurry filter unit and oil slurry filter system containing the same, and oil slurry filtering process
PCT/CN2020/076016 WO2020169064A1 (en) 2019-02-20 2020-02-20 Oil slurry filter, oil slurry filtering unit containing the same, oil slurry filtering system and oil slurry filtering method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910132300.8A CN111603845B (en) 2019-02-22 2019-02-22 Filtering system and filtering method for oil slurry

Publications (2)

Publication Number Publication Date
CN111603845A true CN111603845A (en) 2020-09-01
CN111603845B CN111603845B (en) 2022-12-13

Family

ID=72193749

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910132300.8A Active CN111603845B (en) 2019-02-20 2019-02-22 Filtering system and filtering method for oil slurry

Country Status (1)

Country Link
CN (1) CN111603845B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113209690A (en) * 2021-03-26 2021-08-06 林宗乙 Nano microcrystalline cellulose filter cake extraction treatment method
CN114259786A (en) * 2021-12-06 2022-04-01 北京航天石化技术装备工程有限公司 Skid-mounted filtering system and filtering and separating method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2764818A1 (en) * 1997-06-18 1998-12-24 Degremont METHOD AND DEVICES FOR CLEANING FILTERS
CN203829733U (en) * 2014-05-14 2014-09-17 黄河科技学院 Filter bag inverted grease filter device
CN205867723U (en) * 2016-07-29 2017-01-11 浙江华基环保科技有限公司 Filter bag is crossed to liquid
CN206715465U (en) * 2017-05-12 2017-12-08 北京石油化工工程有限公司 The filtration system of coal tar

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2764818A1 (en) * 1997-06-18 1998-12-24 Degremont METHOD AND DEVICES FOR CLEANING FILTERS
CN203829733U (en) * 2014-05-14 2014-09-17 黄河科技学院 Filter bag inverted grease filter device
CN205867723U (en) * 2016-07-29 2017-01-11 浙江华基环保科技有限公司 Filter bag is crossed to liquid
CN206715465U (en) * 2017-05-12 2017-12-08 北京石油化工工程有限公司 The filtration system of coal tar

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
中国科学技术情报研究所重庆分所编著: "《国外医用高分子》", 30 September 1975 *
张增志编著: "《环境工程材料》", 30 November 2018 *
电力设备杂志社组编: "《发电工程辅机/机电产品选型选厂目录（2006年）》", 31 January 2007 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113209690A (en) * 2021-03-26 2021-08-06 林宗乙 Nano microcrystalline cellulose filter cake extraction treatment method
CN113209690B (en) * 2021-03-26 2023-07-07 南京悦之新新材料有限公司 Extraction treatment method of nanocrystalline cellulose filter cake
CN114259786A (en) * 2021-12-06 2022-04-01 北京航天石化技术装备工程有限公司 Skid-mounted filtering system and filtering and separating method

Also Published As

Publication number Publication date
CN111603845B (en) 2022-12-13

Similar Documents

Publication Publication Date Title
KR101584200B1 (en) Heavy Oil Upgrade Process Including Recovery of Spent Catalyst
CN111603845B (en) Filtering system and filtering method for oil slurry
US8372292B2 (en) Melt blown polymeric filtration medium for high efficiency fluid filtration
CN114106878B (en) System and method for treating solid raw material-containing oil and application of hydrogenated filtered oil
WO2020169064A1 (en) Oil slurry filter, oil slurry filtering unit containing the same, oil slurry filtering system and oil slurry filtering method
CN111592909B (en) Oil slurry filtering system and oil slurry filtering method thereof
CN111589224A (en) Multistage filtering system and method for oil slurry
AU655726B2 (en) Method of removing catalyst
CN111592908B (en) Oil slurry filtering system and oil slurry filtering method
CA3113383A1 (en) Process for removing catalyst fines by nanofiltration
CN114073871B (en) Filtering system and filtering method
CN111589223A (en) Multistage oil slurry filtering system and oil slurry filtering method
CN114106877B (en) System and method for producing low-sulfur marine fuel oil
CN112708458B (en) System and method for treating oil slurry
CN114075455B (en) Catalytic cracking and residual oil hydrogenation combined treatment system and method
CN114075454B (en) Slurry oil and heavy oil processing system and method
DE102007033258A1 (en) Waste fluid separating medium regeneration method for use during manufacture of solar cells, involves removing solvent from fluid mixture after separation of solid particle and under pressure using ceramic nano-filtration unit
CN112708457B (en) Oil slurry hydrotreatment system and treatment method thereof
CN219355529U (en) Novel high-efficient continuous slurry oil filtration system
CN112410909B (en) Preparation method and application of porous fiber
CN110869471A (en) Electrokinetic separation of solid particles from hydrocracker streams
CN219272687U (en) Solid-liquid separation device for recovering nano powder
CN211688517U (en) Process water treatment system of ethylene production device by ethylene-propylene-alkane mixed steam cracking
CN217773809U (en) Continuous filtration system of hydrogenation catalyst
CN117625249A (en) System and method for treating impurities in Fischer-Tropsch tail wax

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant