CN100400150C - Quick cooling blender - Google Patents
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- CN100400150C CN100400150C CNB2005100686498A CN200510068649A CN100400150C CN 100400150 C CN100400150 C CN 100400150C CN B2005100686498 A CNB2005100686498 A CN B2005100686498A CN 200510068649 A CN200510068649 A CN 200510068649A CN 100400150 C CN100400150 C CN 100400150C
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Abstract
The present invention discloses a quenching mixer which comprises a cold hydrogen distributor, a scale type cooling disk, a hydrogen distributing box, a liquid seal labyrinth ring and a ring-shaped splash plate component, wherein the cold hydrogen distributor is arranged in the hydrogen distributing box; the scale type cooling disk is arranged on the hydrogen distributing box; the ring-shaped splash plate component is arranged below the hydrogen distributing box; the liquid seal labyrinth ring is connected to the cooling disk and forms a liquid seal drainage structure with the hydrogen distributing box. Compared with the prior art, the quenching mixer directly mixes and uniformly distributes cold media and heat media, improves the heat exchange efficiency, has the characteristics of simple structure, small volume, convenient installation, uniform distribution of gas phases and liquid phases, small pressure drop, etc. and reaches the purpose of reduction of the occupied space of the element by improving the heat exchange efficiency and shortening the time of mix and heat exchange. The quenching mixer of the present invention can be used for various processes of cooling heat liquid by cold gas and be especially suitable for cooling reaction materials by hydrogen in a hydrogenation reactor.
Description
Technical field
The present invention relates to a kind of quench mixer, belong to gas-liquid mixed, field of heat exchange equipment, be applicable to the heat exchange between the different gas-liquid two-phase of temperature, especially a kind of liquid and gas that are used for heat in the hydrogenation reactor mix with cold hydrogen, the equipment of heat exchange.
Background technology
Hydrogenation reaction belongs to exothermic reaction, and special hydrocracking reaction process heat release is more.Therefore, for many beds hydrogenation reactor, oil and hydrogen raise in last bed reaction back temperature, and for the needs of next bed continuation hydrogenation reaction, the mode that adds cold hydrogen in the middle of just must adopting is controlled temperature, promptly reduces the reaction mass temperature with cold hydrogen.Because hydrogenation reaction mostly is high temperature, high pressure operating mode,, all can increase equipment investment and operating cost greatly by increasing cold hydrogen input quantity or increasing the space.Therefore, cold hydrogen must mix fully with the reaction mass of heat, obtains heat exchange efficiency preferably, so that reduce the internals space, improves the reactor service efficiency, makes next bed can obtain more uniform temperature and material distribution.Progress along with hydrogen addition technology, reactor is more and more huger, the inhomogeneous meeting of heat exchange causes the temperature of charge skewness on the beds radial section, difference appears in the Temperature Distribution on the radial section, hot-spot promptly occurs, even can cause the catalyst coking, not only damage the performance of catalyst, the bias current phenomenon also appears in reactor, thereby reduces the life cycle of catalyst greatly, the operation fluctuation of the device that also induces reaction simultaneously.Therefore, cold hydrogen and the efficient uniform heat exchange of pyroreaction material, temperature and material distribution that next bed is obtained on the more uniform bed radial section are the prerequisites of giving full play to catalyst performance and device even running.
In the hydrogenation reactor there be the primary structure pattern of cold hydrogen box: honeycomb tubular type, manifold-type, band tooth boxlike, stream formula, Spiralism type, band deflector type and drawing-in type, wherein the most frequently used is the drawing-in type cold hydrogen box.All there be shortcoming or deficiency more or less in the said structure pattern, is mainly reflected in that mixed effect is not good, heat exchange efficiency is low, pressure drop distributes difference etc. greatly, again.Patent CN2448440Y discloses a kind of spiral-flow type cold hydrogen box, and this cold hydrogen box is made of refrigerator pipe, plate washer, semicircle hybrid channel, tangential flow guiding pipe, blending bin.Patent CN2294771Y discloses a kind of quench mixer, and this quench mixer is made of refrigerator pipe, logistics positioning disk, annular choke block, logistics dispersion impeller, arc mixing channel, dividing plate, logistics guide plate.Patent CN2167776Y has disclosed the gas-liquid mixed chilling case under a kind of and the flow direction, and this mixing chilling case is made of last tower tray, middle blending bin and following sieve tray.Patent US3723072 has disclosed a kind of chilling case, this structure is that high temperature substrate stream flows into the chilling case by a ring section, cold hydrogen imports offering in the round box of some apertures of central area all around, between four circular tank of chilling case and central area the annular blending bin is arranged, high temperature logistics and cold hydrogen are gone in opposite directions, finish mixing, heat exchange at this, sieve plate is established in the bottom surface, is used to the logistics that distributes.Patent US3880961 has disclosed a kind of chilling case, and this structure is for being provided with taper seal pot and cold hydrogen tube, and cold and hot aperture from seal pot enters blending bin, and the sidewall bar seam from blending bin enters the sieve plate distribution plate then.Patent US3787189 has disclosed a kind of chilling case, and this structure is the chilling case at a dividing plate (dish) epirelief, the band blade that hangs down, and two-layer up and down bending blade direction is opposite.Patent US3502445 has disclosed a kind of chilling case, and this structure is provided with the trapezoidal impingement box of two symmetries, utilizes baffling, splash to realize cold and hot logistics heat exchange.
Above-mentioned cold hydrogen box is provided with various structure purposes: prolongs cold and hot stream flow distance, is convenient to extend contact time, or the disturbance logistics, increase contact area, thereby realize the heat exchange of cold and hot logistics.But these cold hydrogen boxes mainly adopt cold logistics and the hot logistics and the type of flow, because cold logistics is a gas phase, the part that hot logistics mainly need be cooled is a liquid phase, and the stream mode is difficult for making gas, the abundant heat exchange of liquid two-phase, particularly liquid phase may produce the uneven temperature phenomenon, and heat exchange efficiency and uniformity need further to improve.
Summary of the invention
At the deficiencies in the prior art, the present invention directly mixes hot and cold logistics, and evenly distributes, thereby improves heat exchange efficiency, shortens mixing, heat-exchange time, reaches to reduce the purpose that quench mixer takes up space.
Quench mixer structure of the present invention comprises that cold hydrogen distributor, flake type cooler pan, cloth hydrogen case, fluid-tight labyrinth ring and annular spatter board component; Cold hydrogen distributor is arranged in the cloth hydrogen case, above the cloth hydrogen case flake type cooler pan is set, and annular being set below the cloth hydrogen case spatters board component, and the fluid-tight labyrinth ring is connected on the cooler pan and with cloth hydrogen case sidewall and forms fluid-tight discharge opeing structure.
The concrete modular construction of quench mixer of the present invention is as follows: cold hydrogen distributor is straight tube, endless tube or rake shape structure, communicates with cold hydrogen inlet tube, and several apertures are evenly offered in its lower surface or side.The flake type cooler pan is arranged on cold hydrogen distributor top, and complete annular guiding gutter is offered in flake type cooler pan outer, or is plurality of sections arc guiding gutter, and guiding gutter is the passage of fluid flow.Several flake type deflection plates are set on flake type cooler pan surface, it is shaped as the U type, is inverted V-type, rectangle, semicircle or other geometry, edge several little teeth that evenly distribute, the slit of offering is over against close guiding gutter (slit the outside along the reactor radial outward), passage arranged below the deflection plate.Cold hydrogen distributor is arranged in the cloth hydrogen case, cloth hydrogen case be arranged on the flake type cooler pan below, constitute by inside and outside cylindrical shell and base plate, there are annular space in the upper edge of inside and outside cylindrical shell and flake type cooler pan.The fluid-tight labyrinth ring be arranged on be connected the flake type cooler pan below, for hermetically-sealed construction is connected, place between the inside and outside cylindrical shell of cloth hydrogen case between fluid-tight labyrinth ring and flake type cooler pan, at the bottom of the fluid-tight labyrinth ring along having the gap with cloth hydrogen box plate.Annular is spattered board component and is arranged on below the cloth hydrogen case, several annular slabs with proper width and axial spacing constitute taper, all annular slabs are concentric circles and arrange, axially, radially all there is suitable gap between each adjacent annular slab, several annular slabs are fixed into one by connector, and form being inverted has axially and the cone of annular space radially.
The present invention has constructed cold hydrogen input and distribute required space and place by cold hydrogen distributor, flake type cooler pan, cloth hydrogen case and fluid-tight labyrinth ring are set; Several flake type deflection plates are set on the flake type cooler pan, and its slit constitutes cold hydrogen distribution channel, and card is the gathering and the field of flow of liquid phase; The fluid-tight labyrinth ring is set, along there being the gap, constitutes quench mixer liquid collecting drain passage at the bottom of this fluid-tight labyrinth ring; If annular is spattered board component, realize the mixing again of liquid phase and distribution just.By as can be seen above-mentioned, quench mixer of the present invention is simple in structure, volume is little, easy for installation, gas-liquid is evenly distributed mutually.Contact with the direct mixing cross-current type of hot logistics because produced cold logistics repeatedly, improved heat exchange efficiency greatly, and logistics when flowing through this quench mixer pressure drop less.Quench mixer of the present invention is applicable to the heat exchange between the different gas-liquid two-phase of temperature, and the liquid and gas that are particularly useful for heat in the hydrogenation reactor mix with cold hydrogen, heat exchange.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a vertical view.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.As shown in Figure 1 and Figure 2, structure of the present invention is spattered board component 4 by cold hydrogen distributor 1, flake type cooler pan 2, cloth hydrogen case 5, fluid-tight labyrinth ring 3 and annular and is combined.
Cold hydrogen distributor 1 is arranged on the inside of cloth hydrogen case 5, is straight tube, ring-type or rake shape structure, and several apertures are evenly offered in its lower surface or side.Cloth hydrogen case 5 is made of inside and outside cylindrical shell and base plate, is placed in below the flake type cooler pan 2; There are annular space in the upper edge of inside and outside cylindrical shell and flake type cooler pan, and this annular space is not more than 1/5 of cylindrical shell height, preferably are not more than 1/10, but more preferably greater than 1mm.The inner core height preferably is not higher than urceolus, and general inner core height can be 1/10～9/10 of a urceolus height, is beneficial to discharge opeing.Cloth hydrogen case also can have only a urceolus, and one or several fluid-tight discharge opeing structure is set in the sidewall appropriate location.Cloth hydrogen box plate edge or other suitable location are offered some clear opening of putting, and the aperture is generally 0.5～5mm, are used for the liquid that may exist in the emptying cold hydrogen box.Flake type cooler pan 2 is set, the annular space fluid passage that its outer is offered is complete annulus, or is plurality of sections arc fluid passage (fluid passage is the guiding gutter of fluid), when this passage is the plurality of sections arc, offer arc length and be not less than 50% of flake type cooler pan girth, preferred value is 95%; Several flake type deflection plates are set in suitable zone; The flake type deflection plate is the U type, is inverted V-type, rectangle, semicircle or other geometry, its edge several teeth that evenly distribute, V-shaped, semicircle or other geometry of profile of tooth, 0.5～10 ° preferred 2 ° of the angles of flake type deflection plate and flake type cooling card; The slit of offering is all over against close guiding gutter, and promptly several flake type deflection plates are fan-shaped and arrange.Fluid-tight labyrinth ring 3 be connected flake type cooler pan 2 following, place between the cloth hydrogen case 5 inside and outside cylindrical shells, and and the flake type cooler pan between for being tightly connected; , there is the gap in the end of fluid-tight labyrinth ring along the base plate with cloth hydrogen case, and its structure is annular or other any geometry; When its structure was other any geometry, quantity was some, is rule or irregular alignment, and it highly is not more than 1/3 of cloth hydrogen case height.Several annular slabs with proper width and axial spacing constitute taper, all annular slabs are concentric circles and arrange, axially, radially all have suitable gap between each adjacent annular slab, several annular slabs are fixed into one by connector, and form being inverted has axially and the cone of annular space radially.Upper strata annular slab internal diameter is between adjacent lower floor annular slab internal diameter and external diameter, and the vertical range between adjacent two annular slabs is generally 5～400mm.Other structure and concrete parameter can be determined by the design of this area general knowledge as required.
By cold hydrogen distributor, flake type cooler pan, cloth hydrogen case and fluid-tight labyrinth ring are set, above-mentioned unit architecture cold hydrogen input and distribute required space and place; Several flake type deflection plates are set on the flake type cooler pan, and its slit constitutes cold hydrogen distribution channel, and card is the gathering and the field of flow of liquid phase; The fluid-tight labyrinth ring is set, along there being the gap, constitutes quench mixer liquid collecting drain passage at the bottom of this fluid-tight labyrinth ring; Annular is set spatters board component, construct the decomposite place of cold and hot two-phase, realize mixing again, heat exchange and the dispersion just of gas-liquid phase.
During work, liquid phase drops on the flake type cooler pan from a last beds, and formation more evenly distributes, the liquid layer that flows to flake type cooler pan outer, cold hydrogen autoreactor is outer to be input in the cloth hydrogen case by cold hydrogen distributor, under the effect of gas pressure, be full of cloth hydrogen case, cold hydrogen is blown in the liquid layer that flows on the flake type cooler pan by the slit between flake type cooler pan and flake type deflection plate, because several teeth of even distribution are offered at the edge of flake type deflection plate, cold hydrogen forms a string bubble during by between cog, as aeration, bubble passes liquid layer, mixes with liquid phase, carries out heat transfer process.The perk of flake type deflection plate, herein the liquid phase of flowing through of kicking up is beneficial to cold hydrogen and finishes broken mobile work, is convenient to gas-liquid and fully mixes.Several flake type deflection plates owing on the whole reactor cross section, distributed, and the layout of flake type deflection plate is consistent with the direction that liquid phase flows, the gas-liquid mixed of this aeration type can be carried out several times before fluid flows out the flake type cooler pan, so, gas-liquid two-phase has had well-mixed chance, the heat exchange efficiency height.The gas-liquid two-phase mixing is spattered board component after the annular space of flake type cooler pan outer is wandered to annular, and liquid phase forms liquid film in the cooler pan outer, and cold hydrogen flow to and passes this liquid film when annular is spattered board component, makes the broken stream of liquid phase, finishes mixed process again.Cold hydrogen and the liquid phase annular of falling is spattered board component, and splash step by step, until the whole reactor cross section, liquid phase is scattered to adjacent annular slab from the annular slab splash, forms to disperse, and cold hydrogen passes at the drop layer that disperses, not only finish gas-liquid mixed, also realize distribution function just.Several times aeration type through the flake type cooler pan mixes, heat exchange, broken stream, the mixing at annular space place, flake type cooler pan outer, and annular is spattered a plurality of processes such as mixing that board component causes, heat exchange, has improved heat exchange efficiency greatly.
Claims (6)
1. quench mixer is characterized in that comprising that cold hydrogen distributor, flake type cooler pan, cloth hydrogen case, fluid-tight labyrinth ring and annular spatter board component; Cold hydrogen distributor is arranged in the cloth hydrogen case, above the cloth hydrogen case flake type cooler pan is set, and annular being set below the cloth hydrogen case spatters board component, and the fluid-tight labyrinth ring is connected on the cooler pan and with cloth hydrogen case sidewall and forms fluid-tight discharge opeing structure; Described flake type cooler pan is provided with several flake type deflection plates on the surface, passage is arranged below the deflection plate; Described cold hydrogen distributor is straight tube, endless tube or rake shape structure, communicates with cold hydrogen inlet tube, and several apertures are evenly offered in cold hydrogen distributor lower surface or side; Described cloth hydrogen case is made of inside and outside cylindrical shell and base plate, and there are annular space in the upper edge of inside and outside cylindrical shell and flake type cooler pan, and the inner core height is not higher than urceolus; Described fluid-tight labyrinth ring be connected the flake type cooler pan below, and between the flake type cooler pan for being tightly connected, place between the inside and outside cylindrical shell of cloth hydrogen case, at the bottom of the fluid-tight labyrinth ring along having the gap with cloth hydrogen box plate; Described annular is spattered board component and is constituted taper by several annular slabs with proper width and axial spacing, all annular slabs are concentric circles and arrange, axially, radially all there is suitable gap between each adjacent annular slab, several annular slabs are fixed into one by connector, and form being inverted has axially and the cone of annular space radially.
2. according to the described quench mixer of claim 1, it is characterized in that described flake type cooler pan outer offers complete annular guiding gutter, or be plurality of sections arc guiding gutter.
3. according to the described quench mixer of claim 1, it is characterized in that described flake type deflection plate is shaped as the U type, is inverted V-type, rectangle, semicircle or other geometry, edge several little teeth that evenly distribute, the slit of offering is along the reactor radial outward.
4. according to the described quench mixer of claim 3, it is characterized in that the angle of described flake type deflection plate and flake type cooling card is 0.5～10 °.
5. according to the described quench mixer of claim 1, it is characterized in that described annular spatters board component upper strata annular slab internal diameter between adjacent lower floor annular slab internal diameter and external diameter.
6. according to the described quench mixer of claim 1, it is characterized in that the vertical range that described annular is spattered between adjacent two annular slabs of board component is 5～400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100686498A CN100400150C (en) | 2004-10-29 | 2005-04-27 | Quick cooling blender |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410082701 | 2004-10-29 | ||
| CN200410082701.0 | 2004-10-29 | ||
| CNB2005100686498A CN100400150C (en) | 2004-10-29 | 2005-04-27 | Quick cooling blender |
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| Publication Number | Publication Date |
|---|---|
| CN1765482A CN1765482A (en) | 2006-05-03 |
| CN100400150C true CN100400150C (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100686498A Active CN100400150C (en) | 2004-10-29 | 2005-04-27 | Quick cooling blender |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108361727A (en) * | 2018-04-10 | 2018-08-03 | 西安西热锅炉环保工程有限公司 | A kind of tubular type condensation heat exchange system of achievable dropwise condensation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2294771Y (en) * | 1997-04-02 | 1998-10-21 | 中国石油化工总公司 | Quench mixing device |
| US5989502A (en) * | 1996-06-04 | 1999-11-23 | Fluor Corporation | Reactor distribution apparatus and quench zone mixing apparatus |
| CN2448440Y (en) * | 2000-09-28 | 2001-09-19 | 中国石油化工集团公司 | Vortex type hydrogen cooling box |
| CN2600160Y (en) * | 2003-01-30 | 2004-01-21 | 中国石油化工股份有限公司 | Quench mixer in hydrocarbon conversion reactor |
-
2005
- 2005-04-27 CN CNB2005100686498A patent/CN100400150C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5989502A (en) * | 1996-06-04 | 1999-11-23 | Fluor Corporation | Reactor distribution apparatus and quench zone mixing apparatus |
| CN2294771Y (en) * | 1997-04-02 | 1998-10-21 | 中国石油化工总公司 | Quench mixing device |
| CN2448440Y (en) * | 2000-09-28 | 2001-09-19 | 中国石油化工集团公司 | Vortex type hydrogen cooling box |
| CN2600160Y (en) * | 2003-01-30 | 2004-01-21 | 中国石油化工股份有限公司 | Quench mixer in hydrocarbon conversion reactor |
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| Publication number | Publication date |
|---|---|
| CN1765482A (en) | 2006-05-03 |
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