CN107398239B - Device for separating catalysts with different particle sizes by slurry bed reactor and application method thereof - Google Patents
Device for separating catalysts with different particle sizes by slurry bed reactor and application method thereof Download PDFInfo
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- CN107398239B CN107398239B CN201710792742.6A CN201710792742A CN107398239B CN 107398239 B CN107398239 B CN 107398239B CN 201710792742 A CN201710792742 A CN 201710792742A CN 107398239 B CN107398239 B CN 107398239B
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- 239000003054 catalyst Substances 0.000 title claims abstract description 92
- 239000002245 particle Substances 0.000 title claims abstract description 39
- 239000002002 slurry Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001914 filtration Methods 0.000 claims description 12
- 239000010419 fine particle Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- 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
- C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
- C10G2/30—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen
- C10G2/32—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts
- C10G2/34—Apparatus, reactors
- C10G2/342—Apparatus, reactors with moving solid catalysts
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a device for separating catalysts with different particle diameters in a slurry bed reactor and a use method thereof, wherein the device is provided with a plurality of groups of filter elements in the slurry bed reactor, wherein eight groups of filter elements with the aperture of 10 mu m and eight groups of filter elements with the aperture of 20 mu m are arranged, four groups of filter elements with the aperture of 30 mu m are arranged, the filter elements with different apertures are symmetrically and uniformly distributed, the upper end of each group of filter elements is provided with a filter valve, the lower end of each group of filter elements is provided with a recoil valve, and the filter elements with different apertures are thrown according to different stages of catalyst distribution, thereby realizing the high-efficiency separation of the catalysts in the slurry bed reactor in a targeted and flexible way, effectively controlling the distribution condition of catalyst particles in the slurry bed reactor, saving a certain amount of catalysts, effectively prolonging the stable operation of a system and generating direct economic benefit.
Description
Technical Field
The invention belongs to the technical field of coal chemical industry, and particularly relates to a device for separating catalysts with different particle sizes by a slurry bed reactor and a use method thereof.
Background
The Fischer-Tropsch synthesis technology is a key technology in the process of indirect coal liquefaction, and the main reactions of the Fischer-Tropsch synthesis technology are CO and H 2 Reacting to generate hydrocarbon, and cooling and separating to obtain an intermediate product: paraffin, high temperature condensate and low temperature condensate, and the intermediate products are further processed to produce diesel oil, naphtha, liquefied gas and other products. The Fischer-Tropsch synthesis catalyst is mainly an iron-based catalyst, catalyst particles in a reactor are in strong stirring, and friction among the catalyst particles and collision between the catalyst and internal parts of the device easily cause catalyst breakage. Catalyst broken under normal operation condition through reverse reactionThe filter element is built in the reactor and is extracted, and then the catalyst is effectively separated from the paraffin. However, as the Fischer-Tropsch synthesis runs for a long period, the catalyst with fine particles slowly accumulates, the efficiency of separating the catalyst by a built-in filter element is poorer and worse, the granularity distribution of the catalyst is also gradually deteriorated, the reactivity is reduced, the liquid level of a bed layer is controlled to be disordered, and the stable operation of the Fischer-Tropsch synthesis slurry bed reaction is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defect that the catalyst cannot be efficiently separated in the long-period process of a Fischer-Tropsch synthesis reactor in the prior art, and provides a device for separating catalysts with different particle diameters by a slurry bed reactor and a use method thereof.
In order to achieve the above purpose, the technical scheme of the invention is that a plurality of groups of filter elements are arranged in a slurry bed reactor, wherein eight groups of filter elements with the aperture of 10 mu m are arranged, eight groups of filter elements with the aperture of 20 mu m are arranged, four groups of filter elements with the aperture of 30 mu m are arranged, the filter elements with different apertures are symmetrically and uniformly distributed, the upper end of each group of filter elements is provided with a filter valve, the lower end of each group of filter elements is provided with a backflushing valve, the upper end of each group of filter elements is opened, the lower end of each filter valve is closed, the group of filter elements is put into use, the lower end of each filter valve is opened, the upper end of each filter valve is closed, the group of filter elements is put into use or is finished to backflush, and the whole filter elements are cut out.
The method for using the catalysts with different particle sizes comprises the following steps:
(1) the catalyst has larger granularity at the initial stage, the content of < 5 mu m and < 22 mu m is less, namely the content of the catalyst with the granularity of < 5 mu m is less than 0.5 percent, the content of the catalyst with the granularity of < 22 mu m is less than 2 percent, and the filtering efficiency can be ensured by selecting a No. 1 filtering element, and the stable operation of the system can be maintained;
(2) the catalyst granularity in the middle stage is gradually reduced, the contents of < 5 mu m and < 22 mu m are gradually increased, namely the catalyst content of the particle size < 5 mu m is about 0.5% -1%, the catalyst content of the particle size < 22 mu m is about 2% -5%, the filter elements of the 1 and 2 numbers are selected to be used, part of the catalyst with fine particles is carried out through the filter element of the 2 types, the rising rate of the catalyst content of the particle size < 5 mu m and the catalyst content of the particle size < 20 mu m is effectively controlled, the filtering efficiency can be ensured, and the stable operation of the system can be maintained;
(3) the granularity of the catalyst is reduced in the later stage, the contents of < 5 mu m and < 22 mu m are continuously increased, namely, the catalyst content of the particle size < 5 mu m is about 1 percent, the catalyst content of the particle size < 22 mu m is about 5 percent, the filtering efficiency of a filter element of the reactor is reduced, and the filter elements of No. 2 and No. 3 are selected for use, so that the catalyst with fine particles is furthest brought out. At this time, the load of the system can be reduced or a new catalyst can be added to maintain the distribution of the catalyst in the system, namely, the catalyst content of less than 5 mu m is controlled to be less than 0.5%, the catalyst content of less than 22 mu m is controlled to be less than 2%, so that the system is restored to the initial stage, and the stable operation of the system is maintained.
The invention has the beneficial effects that: firstly, the effect of the original separation catalyst is improved from 30% to 70%; secondly, the distribution condition of catalyst particles in the slurry bed reactor is effectively controlled, the content of the catalyst particle diameter less than 5 mu m is less than 1%, and the content of the catalyst particle diameter less than 22 mu m is less than 5%; the third is pertinence, can choose the filter element of different apertures flexibly according to different situations; fourthly, a certain amount of catalyst is saved; and fifthly, the stable operation of the system is effectively prolonged.
Drawings
FIG. 1 is a plan view of a built-in filter element for a Fischer-Tropsch synthesis slurry bed reactor.
Fig. 2 is an elevation view of a filter element.
In the figure: 1. a pore size filter element of 10 μm; 2. a pore size filter element of 20 μm; 3. a pore size filter element of 30 μm; 4. is a filter valve; 5. is a recoil valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The device for separating catalysts with different particle diameters in a slurry bed reactor and the using method thereof are shown in figures 1-2, wherein 20 groups of filter elements are arranged in the slurry bed reactor, eight groups of filter elements 1 with the aperture of 10 mu m and eight groups of filter elements 2 with the aperture of 20 mu m are arranged, four groups of filter elements 3 with the aperture of 30 mu m are arranged, the filter elements 1, 2 and 3 with different apertures are symmetrically and uniformly distributed, the upper end of each group of filter elements is provided with a filter valve 4, the lower end of each group of filter elements is provided with a back flushing valve 5, the upper end of each filter element is opened, the lower end of each back flushing valve 5 is closed, the lower end of each back flushing valve 4 is closed, the back flushing valve 5 is closed, the group of filter elements with different apertures is cut out, the number of the filter elements with the same aperture is different, the filter elements with the same aperture are arranged in each group, the lower end of each group of filter elements is provided with a back flushing valve 5, the upper end of each group of filter elements is opened, the catalyst in the slurry bed reactor is gradually increased in the particle diameter, the catalyst content is gradually reduced, and the catalyst content is gradually increased, and the catalyst particle diameter is gradually reduced.
Aiming at the phenomenon, according to the particle size distribution condition of the catalyst in the slurry bed reactor, filtering elements with different apertures can be reasonably used, the particle size distribution of the catalyst in the reactor is controlled to stably run, and the specific use is illustrated by the following table:
the method comprises the following steps: catalyst filter element dosing meter
Further, the method for filtering the catalyst with different particle sizes is realized by the following steps:
(1) the catalyst granularity is larger in the initial stage, the content of < 5 mu m and < 22 mu m is smaller, namely the content of the catalyst with the particle size of < 5 mu m is smaller than 0.5%, the content of the catalyst with the particle size of < 22 mu m is smaller than 2%, and the filtering efficiency can be ensured by selecting the filter element 1, and the stable operation of the system can be maintained;
(2) the catalyst granularity in the middle stage is gradually reduced, the contents of < 5 mu m and < 22 mu m are gradually increased, namely the catalyst content of the particle size < 5 mu m is about 0.5% -1%, the catalyst content of the particle size < 22 mu m is about 2% -5%, the filter elements 1 and 2 are selected to be put into use, and partial fine particle catalysts are carried out through the filter element 2, so that the rising rate of the catalyst content of the particle size < 5 mu m and the catalyst content of the particle size < 20 mu m is effectively controlled, the filtering efficiency can be ensured, and the stable operation of the system can be maintained;
(3) the granularity of the catalyst in the later stage is reduced, the contents of < 5 mu m and < 22 mu m are continuously increased, namely, the catalyst content of the particle size < 5 mu m is close to 1%, the catalyst content of the particle size < 22 mu m is close to 5%, the filtering efficiency of a filter element of the reactor is reduced, and the filter elements 2 and 3 are selected for use, so that the catalyst with fine particles is brought out to the maximum extent. At this time, the load of the system can be reduced or a new catalyst can be added to maintain the catalyst distribution in the system, namely, the catalyst content of less than 5 mu m is controlled to be less than 0.5%, the catalyst content of less than 22 mu m is controlled to be less than 2%, so that the system is restored to the initial stage, and the stable operation of the system is maintained.
The invention has been described with particular reference to the accompanying drawings, but it will be understood that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (2)
1. The application method of the device for separating the catalysts with different particle diameters by the slurry bed reactor is characterized in that the device structure for separating the catalysts with different particle diameters by the slurry bed reactor is characterized in that a plurality of groups of filter elements are arranged in the slurry bed reactor, wherein eight groups of filter elements (1) with the pore diameter of 10 mu m are arranged, eight groups of filter elements (2) with the pore diameter of 20 mu m are also arranged, four groups of filter elements (3) with the pore diameter of 30 mu m are arranged, the filter elements (1), (2) and (3) with different pore diameters are symmetrically and uniformly distributed, the upper end of each group of filter elements is provided with a filter valve (4), and the lower end of each group of filter elements is provided with a recoil valve (5);
the method is realized by the following steps:
(1) the catalyst has larger granularity at the initial stage, the content of < 5 mu m and < 22 mu m is less, namely the content of the catalyst with the granularity of < 5 mu m is less than 0.5 percent, the content of the catalyst with the granularity of < 22 mu m is less than 2 percent, and the filtering efficiency can be ensured by selecting the filter element (1) for use, and the stable operation of the system can be maintained;
(2) the catalyst granularity in the middle stage is gradually reduced, the contents of < 5 mu m and < 22 mu m are gradually increased, namely the catalyst content of the particle size < 5 mu m is about 0.5% -1%, the catalyst content of the particle size < 22 mu m is about 2% -5%, the filter elements (1) and (2) are selected to be put into use, partial fine-particle catalyst is carried out through the filter element (2), the rising rate of the catalyst content of the particle size < 5 mu m and the catalyst content of the particle size < 20 mu m is effectively controlled, the filtering efficiency can be ensured, and the stable operation of the system can be maintained;
(3) the granularity of the catalyst is reduced in the later stage, the contents of the catalyst with the granularity of less than 5 mu m and the catalyst with the granularity of less than 22 mu m are continuously increased, namely, the catalyst with the granularity of less than 5 mu m is about 1 percent, the catalyst with the granularity of less than 22 mu m is about 5 percent, the filtering efficiency of a reactor filter element is reduced, the filter elements (2) and (3) are selected to be put into use, the catalyst with fine particles is brought out to the maximum extent, at the moment, the system load can be reduced or new catalyst is added, the distribution of the catalyst in the system is maintained, namely, the catalyst with the granularity of less than 5 mu m is controlled to be less than 0.5 percent, the catalyst with the granularity of less than 22 mu m is controlled to be less than 2 percent, and the system is restored to the initial stage, so that the stable operation of the system is maintained.
2. The method for using the slurry bed reactor for separating catalyst devices with different particle diameters according to claim 1, wherein the opening of the filter valve (4) at the upper end of each group of filter elements and the closing of the backflushing valve (5) at the lower end of each group of filter elements are the time of throwing the group of filter elements, the opening of the backflushing valve (5) at the lower end of each group of filter elements and the closing of the filter valve (4) at the upper end are the time of throwing or finishing backflushing the group of filter elements, and the closing of the filter valve (4) at the upper end and the backflushing valve (5) at the lower end of each group of filter elements is the time of cutting the group of filter elements.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710792742.6A CN107398239B (en) | 2017-09-05 | 2017-09-05 | Device for separating catalysts with different particle sizes by slurry bed reactor and application method thereof |
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| CN201710792742.6A CN107398239B (en) | 2017-09-05 | 2017-09-05 | Device for separating catalysts with different particle sizes by slurry bed reactor and application method thereof |
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| CN107398239A CN107398239A (en) | 2017-11-28 |
| CN107398239B true CN107398239B (en) | 2023-04-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605678A (en) * | 1984-03-12 | 1986-08-12 | Mobil Oil Corporation | Separation of catalyst from slurry bubble column wax and catalyst recycle |
| CN1589957A (en) * | 2003-09-03 | 2005-03-09 | 上海兖矿能源科技研发有限公司 | Automatic filtering/back purging system liquid and solid separation for in three phase paste state bed reactor |
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| CN105396351A (en) * | 2015-12-16 | 2016-03-16 | 张春辉 | Bionic gravity-type high-efficiency environment-friendly sludge drying device, and implementation method thereof |
| CN105457366A (en) * | 2015-12-22 | 2016-04-06 | 湖州恒鑫过滤科技有限公司 | Large flux multicore filter |
| CN205569936U (en) * | 2016-04-19 | 2016-09-14 | 武汉凯迪工程技术研究总院有限公司 | Thick liquid attitude bed ft synthesis catalyst solid -liquid separation equipment |
| FR3036977A1 (en) * | 2015-06-04 | 2016-12-09 | Hmds Process | DEVICE FOR RETENTING A CATALYST BED IN A CATALYTIC REACTOR |
-
2017
- 2017-09-05 CN CN201710792742.6A patent/CN107398239B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605678A (en) * | 1984-03-12 | 1986-08-12 | Mobil Oil Corporation | Separation of catalyst from slurry bubble column wax and catalyst recycle |
| CN1589957A (en) * | 2003-09-03 | 2005-03-09 | 上海兖矿能源科技研发有限公司 | Automatic filtering/back purging system liquid and solid separation for in three phase paste state bed reactor |
| CN101733045A (en) * | 2008-11-14 | 2010-06-16 | 中国石油化工股份有限公司 | Solid-liquid separation device and solid-liquid separation method for slurry bed reactor |
| CN201558690U (en) * | 2009-07-30 | 2010-08-25 | 中国石油化工股份有限公司 | Inner filtering component for slurry bed reactor |
| CN102258963A (en) * | 2010-05-27 | 2011-11-30 | 北京中天元环境工程有限责任公司 | Fluidized-bed reactor with built-in filtering device |
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| FR3036977A1 (en) * | 2015-06-04 | 2016-12-09 | Hmds Process | DEVICE FOR RETENTING A CATALYST BED IN A CATALYTIC REACTOR |
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