CN1765477A - A fouling dispenser - Google Patents
A fouling dispenser Download PDFInfo
- Publication number
- CN1765477A CN1765477A CN 200410050765 CN200410050765A CN1765477A CN 1765477 A CN1765477 A CN 1765477A CN 200410050765 CN200410050765 CN 200410050765 CN 200410050765 A CN200410050765 A CN 200410050765A CN 1765477 A CN1765477 A CN 1765477A
- Authority
- CN
- China
- Prior art keywords
- sump
- distributor
- incrustation
- begrime
- skeleton
- 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
Links
- 239000003223 protective agent Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000012190 activator Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 21
- 239000012535 impurity Substances 0.000 description 11
- 239000002994 raw material Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 7
- 238000005984 hydrogenation reaction Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000004939 coking Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- -1 asphalitine Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a begrime distributor, which can overcome the defects of present technique which uses begrime box or the layer of protective agent to cause fast increase of pressure drop, odd distribution of gas and liquid and influence on the normal operation in the working process. The invention has the double functions of dirty collection and distribution, which can improve the material flow distribution, decrease the volume of reactor occupied by inner element, increase the carrying amount of activator, to realize better effect. The inventive begrime distribution comprises a begrime distributing base plate and a begrime device. Wherein, said begrime device is arranged on the begrime distribution base plate; the begrime device is a sleeve barrel structure formed by outer and inner cylinder cages; the top of begrime device has a baffle; the side walls of outer and inner cages have filter screens; the bottom of inner cylinder cage and the distributing base plate of begrime device have open structures at their relative positions to the bottom of inner cylinder cage; and the lower outlet of regime distributor has a flow-broken plate. The inventive begrime distributor has the property characters in the working process that gas-liquid distribution, unimproved pressure drop, prolonged working period, better operation flexibility, wider application to variable mediums, and high availability ratio of stuffing (protective agent). The invention can be used in variable fixed-bed reactor, especially in the area of petrochemical industry.
Description
Technical field
The present invention relates to a kind of incrustation distributor, belong to the reactor inner member, the inner member of fixed bed reactors in the petrochemical industry particularly, the incrustation member that distributes in particular for metal impurities, the easy scale forming matter of suspended particulate and fluid in the fixed bed reactors inner filtration liquid.
Background technology
In many fixed bed reaction processes, extensively adopt the distribution plate structure above the reactor catalyst bed, it is too big that the distribution plate bottom is that the incrustation basket occupies the volume of reactor, reduced the catalyst loading amount.Though carrying out material, distributes the distribution plate above the reactor catalyst bed, but often contain some solid matters in the charging, these solid matters can be deposited on the beds top, cause the too high even obstruction of bed pressure drop, shorten service cycle, increase operating cost.Though raw material can be carried out filtration treatment, but because raw material enters after the system owing to also having some solid impurities in the reason materials such as equipment corrosion, have some materials just can produce scale forming matter in addition under reaction condition, these are to get rid of by the mode of filtering outside reactor.So in many fixed bed reaction processes, the incrustation phenomenon of catalyst top bed is very general and serious.
Common incrustation interception mode is in reactor head the incrustation basket to be set in the prior art, and the incrustation basket is outer to use certain filler by the reactor cross-section horizontal loading.Though this mode can stop the incrustation material to deposit on beds to a certain extent, can cause still that outward pressure drop raises until the obstruction of incrustation basket but be deposited on the incrustation basket, still need to stop work to open reactor, change the incrustation basket and just can remain in operation, operate still very loaded down with trivial detailsly, influence runs well.
In the hydrocarbon raw material field of hydrogenation, because the hydrogenation reaction material contains impurity such as colloid, asphalitine, metal impurities and suspended particulate usually, these impurity enter the surface that catalyst section will deposit to catalyst, stopped up the duct of catalyst, the pore volume of catalyst is descended greatly, thereby catalyst activity is reduced fast.Therefore, mostly be directly filling one segment protect agent before fixed bed hydrogenation reactor major catalyst bed, but the protective agent bed is in operation and constantly stop up coking in protective agent section or catalyst section accumulation generation owing to metal impurities, suspended particulate etc. in the raw material.As CN1197105A, ZL00124903, ZL01106004.2; use catalyst grading loading technology; promptly use two or more different catalysts, raw material is contacted with hydrogenation protecting agent, HDM agent, hydrodesulfurization agent, hydrodenitrogeneration agent, hydrocracking agent etc. successively.Above-mentioned technology is failed very effective solution reactor pressure decrease in service and is increased too fast problem, influences efficient and service cycle.
Summary of the invention
At the deficiencies in the prior art, the invention provides that a kind of reactor inner member is existing to slow down the incrustation distributor that incrustation has the fluid distribution function again, this incrustation distributor is integrated sump and distributor, reduce taking reactor interior volume, increase the catalyst loading amount, the incrustation coking that effectively slows down beds, reduce bed pressure drop, prolong catalyst service life, have the fluid distributional effects again, be specially adapted to fixed bed reactors.
Fixed bed reactors incrustation distributor of the present invention comprises sump distribution bottom and sump, and sump uprightly is arranged on the sump distribution bottom.Sump is the tube-in-tube structure that urceolus skeleton and inner core skeleton constitute; urceolus skeleton and inner core skeleton sidewall are established screen pack; the sump top is provided with baffle plate; inner core skeleton bottom and distribution bottom corresponding position are hatch frame, load material or protective agent according to reaction needed between urceolus screen pack and the inner core screen pack.At incrustation distributor and distribution bottom through hole bottom stream breaker is set, material or the one-tenth fluid streams bigger for broken viscosity make it further dispersed material, the stream breaker lacing wire is welded on the seal base, and the bottom is connected with nut with stream breaker, and diffusion hole is set on the stream breaker.
The sump distribution bottom is the slab construction of perforate, and profile and reactor cross section shape adapt.Suitable form such as sump can adopt welding with the sump distribution bottom, is threaded, flange is connected.Sump urceolus skeleton and inner core skeleton can be suitable shape such as circle, polygon, excellent circle.The cover tube bottom can be provided with seal base between sump urceolus skeleton and the inner core skeleton, also can utilize the sump distribution bottom as its seal base.Have strip hole on sump urceolus and the inner core sidewall to form skeleton, establish screen pack on sump urceolus skeleton and the inner core skeleton sidewall, urceolus skeleton screen pack is preferably disposed on the urceolus lateral wall, inner core skeleton screen pack is preferably disposed on the inner core lateral wall, screen pack is welded on sump urceolus skeleton and the inner core skeleton sidewall, and the filter mesh diameter generally can be 3～8mm.Baffle plate can be dull and stereotyped, also can be other suitable epirelief shape such as tapered cap or different curve types of attachment, and the baffle plate area is not less than the inner core sectional area, preferably approximates or is a bit larger tham the urceolus sectional area.Baffle plate is fixed on the sump with dismountable connected mode such as be threaded.Establish 4-12 strip hole on the stream breaker, 4-20 diffusion hole and 4～8 bolts hole.The stream breaker area approximates or is a bit larger tham the inner core sectional area.
The quantity of above-mentioned sump; sump inner/outer tube frame configuration, diameter and height; the size of filter mesh on the sump inner/outer tube sidewall; the connected mode of sump and sump distribution bottom; filler or protectant type etc. can be determined by simple designs by this area general knowledge according to the scale of reactor, the factors such as character of reaction mass.
Incrustation distributor of the present invention can be used in any fixed bed reactors that the incrustation problem arranged, and is mainly used in the course of reaction of liquid charging, as hydrocarbons hydrogenation course of reaction etc.
Incrustation distributor of the present invention is arranged on reactor top in use, the beds top, and sump of the present invention has the effect that slows down incrustation and material distribution.In use; the material of coming in from reactor head drops on the sump distribution bottom; enter sump from sump outer tube side wall screen pack sieve aperture then; behind filler or protective agent in the sump sleeve; by sump inner core sidewall screen pack sieve aperture through inner core bottom opening jet flow to stream breaker; gas then enters downwards in the inner core skeleton between sump baffle plate and the inner/outer tube top, and gas and liquid collide to become to loose to strengthen to be assigned in the bed through 4 strip holes and the broken fluid of 4 diffusing openings on stream breaker and goes.Along with the prolongation of the duration of runs, behind the filler or protective agent obstruction of sump bottom, material will enter sump from the higher slightly spout hole of sump outer tube side wall, finishes the material that filters or remove easy incrustation under reaction condition.From the aforesaid operations process as can be seen; the filler of incrustation distributor of the present invention bottom or protective agent have then utilized the filler or the protective agent on top after stopping up, and do not influence the device running; reach the downward long running cycle of the condition that does not increase pressure drop, improved filler or protectant utilization rate simultaneously.And prior art to be reactor top adopt that the distributor bottom is that the incrustation basket occupies reactor volume is too big; reduced the catalyst loading amount; filler or protective agent are to load in the reactor cross-section layering; logistics directly vertically contacts filler or protective agent; adopt incrustation basket or decker protective agent no matter be; impurity in the reaction mass always is accumulated in earlier on the filler or protective agent of the superiors; prolongation along with the duration of runs; the pressure drop meeting increases gradually; until influencing normal running, and the filler of lower floor or protective agent may also be underused.
Description of drawings
Fig. 1 is the schematic diagram of a kind of typical structure of incrustation distributor.
Fig. 2 is a kind of exemplary configurations schematic diagram of incrustation distributor inner core skeleton.
Fig. 3 is a kind of exemplary configurations schematic diagram of incrustation distributor urceolus skeleton.
Fig. 4 is the stream breaker structural representation.
Fig. 5 incrustation distributor is with triangular arrangement on the sump distribution plate.
Fig. 6 is the position view of incrustation distributor in general reactor.
The specific embodiment
Further specify the incrustation distributor and the mode of operation of a kind of typical structure of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, incrustation distributor of the present invention is made up of connecting bolt 1, attaching nut 2, baffle plate 3, link 4, sump inner core skeleton 5, sump urceolus skeleton 6, strip hole 7, inner core screen pack 8, urceolus screen pack 9, seal base 10, distribution bottom etc. 11, stream breaker lacing wire 12, stream breaker 13, lacing wire nut 14.Wherein sump inner core skeleton 5, sump urceolus skeleton 6 sides are with screen pack 8,9; between sump inner core 5 and the sump urceolus 6 filler or protective agent are housed; the top of baffle plate 3 is provided with centre bore and is connected with link 4 by bolt; link 4 and 5 welding of sump inner core skeleton; link links together baffle plate and incrustation distributor; in inner/outer tube skeleton upper end baffle plate 3 is set; walk short circuit when preventing raw material by sump; sump inner core skeleton 5, sump urceolus skeleton 6 and seal base 10 welding, incrustation distributor and distribution bottom welding.At incrustation distributor and distribution bottom through hole bottom stream breaker is set, material or the one-tenth fluid streams bigger for broken viscosity make it further dispersed material, stream breaker lacing wire 12 is welded on the seal base 10, the bottom is connected with nut with stream breaker, establish 4-8 strip hole on the stream breaker, 4-8 diffusion hole and 4 bolts hole.
Accompanying drawing 2 is that incrustation distributor inner core skeleton circumferentially has strip hole to form skeleton.
Accompanying drawing 3 is that incrustation distributor urceolus skeleton circumferentially has strip hole to form skeleton.
Accompanying drawing 4 is generally to establish 4-8 strip hole on the stream breaker figure stream breaker, 4-8 diffusion hole and 4
Bolt hole, material or the one-tenth fluid streams bigger for broken viscosity make it further dispersed material.
Accompanying drawing 5 incrustation distributors are with triangular arrangement on the sump distribution plate.
Accompanying drawing 6 incrustation distributors are gas-liquid allotter top in reactor, feed pipe 15, feed pipe diffuser 16, end socket 17, incrustation distributor 18, sump distribution plate 11, beds 19.
With hydrocarbon raw material hydrogenation process is example; during work raw material by feed pipe 15 through behind the feed pipe diffuser 16 to the sump distribution plate; raw material distributes on many incrustation distributors; the liquid charging stock overflow enters protective agent by the screen pack 9 of sump urceolus side; by protective agent impurity such as the colloid in the liquid charging stock, asphalitine, metal impurities and suspended particulate are leached, enter the screen pack 8 of sump inner core side then.Gas then enters from flow area between top spout hole or sump inner core 5 sump urceolus, 6 upper ends and the baffle plate, is carrying liquid down to stream breaker, and the gas-liquid collision mixes back diffusion downwards on stream breaker, is redistributed to beds and reacts.Deviate from by metal impurities contained in the liquid charging stock after the protective agent, suspended particulate, reduced metal impurities, suspended particulate enters catalyst section blocking catalyst aperture, and catalyst is lost activity or coking too early.The top protective agent is crossed by Mobile Communication on liquid level after the end protective agent obstruction coking under the delay incrustation distributor can not increase pressure drop, delayed catalyst coking, prolongation catalyst runs time.In inside and outside cylinder frame upper end the baffle plate cap is set, walks short circuit when preventing raw material by the incrustation distributor.
Claims (12)
1, a kind of incrustation distributor is characterized in that comprising incrustation distributor distribution bottom and sump, and sump is arranged on the sump distribution bottom; Sump is the tube-in-tube structure of urceolus skeleton and inner core skeleton and screen pack formation; the sump top is provided with baffle plate; urceolus skeleton and inner core skeleton sidewall dress screen pack; interior tube bottom and sump distribution bottom and interior tube bottom corresponding position are hatch frame; the opening below is provided with stream breaker, loads material or protective agent according to reaction needed between urceolus and the inner core.
2, according to the described incrustation distributor of claim 1, it is characterized in that described sump distribution bottom is the slab construction of perforate, profile and reactor cross section shape adapt.
3,, it is characterized in that described sump adopts welding, is threaded or the flange type of attachment with the sump distribution bottom according to the described incrustation distributor of claim 1.
4,, it is characterized in that described sump urceolus skeleton and inner core skeleton are circle or polygon according to the described incrustation distributor of claim 1.
5,, it is characterized in that the cover tube bottom is provided with seal base between described sump urceolus skeleton and the inner core skeleton, or utilize the sump distribution bottom as its seal base according to the described incrustation distributor of claim 1.
6,, it is characterized in that having screen pack on described sump urceolus skeleton lateral wall and the inner core skeleton lateral wall according to the described incrustation distributor of claim 1.
7,, it is characterized in that described urceolus skeleton and inner core skeleton are to have strip hole on cylinder or the square tube to become the support that supports screen pack according to the described incrustation distributor of claim 1.
8,, it is characterized in that described baffle plate is other shape of flat board, tapered cap or different curve types of attachment according to the described incrustation distributor of claim 1.
9,, it is characterized in that the demountable connected mode of described baffle plate is fixed on the sump according to the described incrustation distributor of claim 1.
10, according to the described incrustation distributor of claim 1; the quantity that it is characterized in that described sump; sump inner/outer tube shape, diameter and height; spout hole pore size and quantity on the sump inner/outer tube sidewall; the connected mode of sump and sump distribution bottom; filler or protectant type are determined according to the scale of reactor, the character of reaction mass.
11, according to the described incrustation distributor of claim 1, it is characterized in that the below of described sump is provided with stream breaker, stream breaker is circular dull and stereotyped, has 4-12 strip hole and 4-20 on the circular flat board and spreads rectangular gap and 4～8 bolts hole.
12,, it is characterized in that stream breaker is connected by lacing wire welding or bolt with the incrustation distributor bottom according to the described stream breaker of claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100507652A CN100364652C (en) | 2004-10-29 | 2004-10-29 | A fouling dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100507652A CN100364652C (en) | 2004-10-29 | 2004-10-29 | A fouling dispenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1765477A true CN1765477A (en) | 2006-05-03 |
| CN100364652C CN100364652C (en) | 2008-01-30 |
Family
ID=36741716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100507652A Expired - Lifetime CN100364652C (en) | 2004-10-29 | 2004-10-29 | A fouling dispenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100364652C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441348A (en) * | 2010-10-13 | 2012-05-09 | 中国石油化工股份有限公司 | Fouling basket and hydrogenation technological method for reducing skimming of catalyst |
| CN103100350A (en) * | 2011-11-09 | 2013-05-15 | 中国石油化工股份有限公司 | Scale depositing basket |
| CN103100354A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Gas-liquid distributor capable of reducing catalyst skimming and hydrogenation process |
| CN103381349A (en) * | 2012-05-03 | 2013-11-06 | 中国石油化工股份有限公司 | Scale depositing basket |
| CN112973581A (en) * | 2021-02-24 | 2021-06-18 | 中国石油化工股份有限公司 | Scale filter, scale filtering equipment and large-scale fixed bed reactor |
| CN114425208A (en) * | 2020-09-17 | 2022-05-03 | 中国石油化工股份有限公司 | Scale pan and dirty gas cleaning device |
| CN115738914A (en) * | 2022-11-02 | 2023-03-07 | 中国石油化工股份有限公司 | Strong effect mixes formula fixed bed reactor in advance |
| CN115814949A (en) * | 2021-09-16 | 2023-03-21 | 中国石油化工股份有限公司 | Gas dust removal device and scale deposit subassembly thereof |
| CN115999451A (en) * | 2021-10-21 | 2023-04-25 | 中国石油化工股份有限公司 | Device and method for removing solid impurities in reactor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3016533B1 (en) | 2014-01-21 | 2016-01-15 | IFP Energies Nouvelles | DISPENSER PLATE FOR EXCHANGE COLUMN BETWEEN GAS AND LIQUID WITH LIQUID DEFLECTOR |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1475082A (en) * | 1973-05-16 | 1977-06-01 | Shell Int Research | Process and apparatus for the catalyric treatment of materials containing solid contaminants |
| US4609465A (en) * | 1984-05-21 | 1986-09-02 | Pall Corporation | Filter cartridge with a connector seal |
| CN2111789U (en) * | 1992-01-25 | 1992-08-05 | 机械电子工业部兰州石油机械研究所 | Suction-breaking flow-type gas-liquid distributor |
| US6511598B2 (en) * | 1997-09-02 | 2003-01-28 | Moshe Gershenson | Concentrically arranged filter element assembly |
| CN2355786Y (en) * | 1998-12-20 | 1999-12-29 | 中国石油化工集团公司 | Gas-liquid distributor |
-
2004
- 2004-10-29 CN CNB2004100507652A patent/CN100364652C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441348A (en) * | 2010-10-13 | 2012-05-09 | 中国石油化工股份有限公司 | Fouling basket and hydrogenation technological method for reducing skimming of catalyst |
| CN102441348B (en) * | 2010-10-13 | 2014-01-01 | 中国石油化工股份有限公司 | Fouling basket and hydrogenation technological method for reducing skimming of catalyst |
| CN103100350A (en) * | 2011-11-09 | 2013-05-15 | 中国石油化工股份有限公司 | Scale depositing basket |
| CN103100350B (en) * | 2011-11-09 | 2015-10-07 | 中国石油化工股份有限公司 | Sediment incrustation basket |
| CN103100354A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Gas-liquid distributor capable of reducing catalyst skimming and hydrogenation process |
| CN103100354B (en) * | 2011-11-10 | 2014-10-15 | 中国石油化工股份有限公司 | Gas-liquid distributor capable of reducing catalyst skimming and hydrogenation process |
| CN103381349A (en) * | 2012-05-03 | 2013-11-06 | 中国石油化工股份有限公司 | Scale depositing basket |
| CN114425208A (en) * | 2020-09-17 | 2022-05-03 | 中国石油化工股份有限公司 | Scale pan and dirty gas cleaning device |
| CN112973581A (en) * | 2021-02-24 | 2021-06-18 | 中国石油化工股份有限公司 | Scale filter, scale filtering equipment and large-scale fixed bed reactor |
| CN115814949A (en) * | 2021-09-16 | 2023-03-21 | 中国石油化工股份有限公司 | Gas dust removal device and scale deposit subassembly thereof |
| CN115999451A (en) * | 2021-10-21 | 2023-04-25 | 中国石油化工股份有限公司 | Device and method for removing solid impurities in reactor |
| CN115738914A (en) * | 2022-11-02 | 2023-03-07 | 中国石油化工股份有限公司 | Strong effect mixes formula fixed bed reactor in advance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100364652C (en) | 2008-01-30 |
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Granted publication date: 20080130 |