US3584844A - Bubble plates for bubble towers - Google Patents

Bubble plates for bubble towers Download PDF

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Publication number
US3584844A
US3584844A US792689*A US3584844DA US3584844A US 3584844 A US3584844 A US 3584844A US 3584844D A US3584844D A US 3584844DA US 3584844 A US3584844 A US 3584844A
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United States
Prior art keywords
bubble
tray
liquid
partition
plate
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Expired - Lifetime
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US792689*A
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English (en)
Inventor
Agoston Papp
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.)
Chemokomplex Vegyipari Gep es Berendezes Export Import Vallalat
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Chemokomplex Vegyipari Gep es Berendezes Export Import Vallalat
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/16—Fractionating columns in which vapour bubbles through liquid
    • B01D3/18—Fractionating columns in which vapour bubbles through liquid with horizontal bubble plates
    • B01D3/20—Bubble caps; Risers for vapour; Discharge pipes for liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/16—Fractionating columns in which vapour bubbles through liquid
    • B01D3/163—Plates with valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/16—Fractionating columns in which vapour bubbles through liquid
    • B01D3/18—Fractionating columns in which vapour bubbles through liquid with horizontal bubble plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Definitions

  • the air lift or mammoth pump principle is employedby means of which the liquid on the plate is enriched with gas traversing the plate at the far side thereof as regards its overflow weir which entails a local decrease of the specific weight of the liquid.
  • Channels below the plate connect places in the neighborhood of the overflow weir with the places of locally decreased specific weight of the liquid. Consequently, the liquid of higher specific weight flows from the neighborhood of the overflow weir beneath the plate back to the far side of the plate where it ascends back into the main flow of the liquid which means a constant recirculation of the liquid around the plate in a vertical plane.
  • This invention relates to a method of treating a liquid with a gaseous medium in a bubble tower and to a bubble plate for such method.
  • Bubble towers comprise bubble plates or trays which are likewise known in the art.
  • Efficiency of a bubble tower largely depends on what is called the mass transfer driving force on its plates.
  • the mass transfer driving force is the difference between the mole fraction of a gaseous medium at a point and the mole fraction of the gaseous medium in equilibrium with the liquid at the same point. The greater the mass transfer driving forces along the plate, the greater will be the mass transfer and, thus, the efficiency of the plate.
  • the main object of the present invention is to eliminate this inconvenience and to provide means whereby concentration gradients can be dispelled from or at least substantially reduced on bubble plates.
  • the invention recognizes that thorough backmixing of the liquid on the plate entails compensation of composition differences which, in turn, results in diminishing of the concentration gradient and, thereby, in practically uniform mass transfer conditions on the plate. These again are, within practical limits, responsible for a possible optimum of overall plate efficiency.
  • backmixing improves the plate efficiency and permits to employ a substantially lesser number of plates for a desired performance of separation.
  • the invention eliminates this inconvenience by employing a basically new concept of recirculation which consists in circulating the liquid in a vertical rather than in a horizontal plane or, in other words, around rather than on the tray of a bubble plate.
  • the invention suggests to apply the airlift or mammoth pump principle of operation to bubble plates by which a backmixing of the liquid and, thereby, an intimate mixing of various portions thereof may be obtained through purely hydraulic conditions.
  • the airlift or mammoth pump principle proper means that the specific weight of a liquid is locally decreased by air being admixed to it so that a local upward flow of the liquid will set in and exert a suction on liquid portions of heavier specific weight which, in turn, will flow to places where air is introduced. Thereby, a continuous upward flow of the liquid is obtained.
  • an improved method of treating a liquid with a gaseous medium in countercurrent flow with the gaseous medium flowing upwards and traversing a layer of the liquid on each bubble plate is obtained in which the improvement consists in the step of circulating such layer in a vertical plane by locally enriching the liquid in gaseous medium so as to decrease the specific weight of a portion of the layer with respect to the specific weight of other portions thereof, and to cause such other portions to flow beneath the layer to where the specific weight of it is relatively lower, such recirculation of the layer in a vertical plane resulting in substantially uniform composition of the liquid along the whole extension of recirculation.
  • a bubble plate for bubble towers comprising, in a manner known per se, a tray on which a constant level of liquid is maintained by an overflow weir, sealed perforations such as the meshes of a sieve in the tray being provided for a gaseous medium flowing upwardly therethrough.
  • the bubble plate for carrying out the method according to the invention is distinguished over the prior art by the provision of a partition remote from the overflow weir and confining an axial passage above sequestered and perforated portion of the tray with a seal on the perforation, the level of the seal being lower than the level of the top brim of the partition, and the flow resistance of the axial passage against the flow of the gaseous medium being smaller than such flow resistance outside the partition, a passage of intercommunication in the tray upstream in the proximity of the overflow weir, another passage of intercommunication in the tray inside the partition, and a channel connecting both passages of intercommunication with one another beneath the tray.
  • the level of the seal inside the partition must be lower than the level of the top brim of the partition since, otherwise, there would be no room for the liquid being enriched with gaseous medium.
  • a desired difference between the flow resistances inside and outside the partition is obtainable in various manners.
  • the meshes of the sieve inside the partition may be of greater size than outside thereof.
  • seals consisting of foraminated plates If the perforations are provided with risers or chimneys the height thereof may be relatively greater inside the partition.
  • seals consisting of axially movable bubble caps the bubble cap employed inside the partition may be lighter. The aforesaid means of sealing may also be employed in combination. Then, their individual effects will be added. E.G.
  • the size of the meshes of the sieve may be equal to or, depending on the height of the riser, even smaller than that of the sieves employed for sealing the perforations outside the partition at the level of the tray, etc.
  • FIG. 1 is a longitudinal sectional view of an exemplified bubble plate taken along lll-l of F IG. 2.
  • FIG. 2 shows a top view of the bubble plate according to FIG. 1.
  • FIG. 3 illustrates an enlarged sectional view of a detail taken along line lll-lll of H6. 2.
  • FIG. 4 represents a perspective view of the detail illustrated in FIG. 3.
  • FIG. 5 is a longitudinal sectional view of another exemplified embodiment taken along line V-V of FIG. 6.
  • FIG. 6 shows a top view to FIG. 5.
  • FIG. 7 illustrates an enlarged sectional view of a bubble plate according to the present invention.
  • FIG. 8 represents a perspective view of the detail shown in FIG. 7.
  • FIG. 9 shows a longitudinal sectional view of still another exemplified embodiment.
  • FIG. 10 is a perspective view of a detail designated by a circle in FIG. 9.
  • FIGS. 11 to 13 illustrate longitudinal sectional views of further exemplified embodiments.
  • reference character refers to an intermediate portion of a bubble tower known per se with a bubble plate according to the invention in it, the bubble plate being distinguished from the tower in the drawing by an increased thickness of lines.
  • the bubble plate is arranged between downcomers 22 and 24 the inner walls of which fonn, above the levels of the bubble plates, overflow weirs as is known in the art.
  • the inner wall of the downcomer 24 forms the overflow weir 26 of the represented bubble plate whereas the inner wall of the downcomer 22 forms the overflow weir of an uppernext bubble plate not shown.
  • the overflow weir 26 is supported by a tray 28 with perforations in it one of which is designated by reference character 30.
  • the overflow weir 26 serves for maintaining a constant level 32 of liquid 34 on the tray 28 while the perforations 30 are destined to permit a gaseous medium such as a vapor to flow upwards therethrough and traverse the layer of liquid 34 in the form of bubbles 36.
  • a basic feature of the invention is the provision of one or more partitions such as partition 38 sequestering a portion of the surface of the tray 28 with at least one of the perforations 30 remote from the overflow weir 26 from other tray surface portions and confining an axial passage 40 on such sequestered area.
  • the perforation 30 inside the partition 38 is sealed in a conventional manner.
  • sealing means, design and/or dimensions are selected so that, on the one hand, the level of the seal on the perforation inside the partition be lower than the level of the top brim of the partition and, on the other hand, the flow resistance in the axial passage against the flow of the gaseous medium be smaller than such flow resistance outside the partitron.
  • Another basic feature consists in that a backflow of the liquid 34 on tray 28 from the overflow weir 26 directly into the axial passage 40 is rendered possible by employing passages such as passages 42 and 44 of intercommunication in the tray 28 upstream in the proximity of the overflow weir 26 and in the sequestered portion, respectively, and a channel 46 which connects both passages 42 and 44 with one another beneath the tray 28.
  • the tray 28 is, in a manner known per se, studded with chimneys or risers 48 of similar heights which surround each a perforation 30 in the tray 28 and are sealed by sieves or foraminated plates in the usual manner.
  • members of the row of chimneys 48 remotest from the overflow weir 26 and in the immediate proximity of the downcomer 22 are distinguished from their fellow chimneys downstream in the tray 28 by that they are surrounded, pairwise and in spaced apart relationship, by a corresponding number of the partitions 38 which extend from the tray 28 up wardly beyond the chimneys 48 forming, in the instant case, four axial passages 40 each around and above a chimney 48 on the far side of the tray 28 as regards the overflow weir 28.
  • the chimneys 48 inside and outside the partitions 38 are sealed by sieves of different mesh sizes and, therefore, designated by different reference numerals 52 and 54, respectively (see e.g. FIG. 2).
  • Meshes of the sieves 52 inside the partitions 38 are bigger than the meshes of the sieves 54 outside the partitions 38. Consequently, a gaseous medium flowing upwards through chimneys 48 inside the partitions 38 will meet smaller flow resistance than in chimneys 48 outside the partitions 38 which is a basic requirement of the invention. It is seen (FIG.
  • the channels 46 connecting the pairs of passages 42 and 44 of intercommunication are formed each by a pipe conduit 56 which opens via a distribution chamber 58 into the axial passages 40.
  • the liquid 34 comes pouring down through downcomer 22 from the not represented uppernext bubble plate onto the tray 28 where it is impounded by the overflow weir 26 so that, at a constant rate of flow, the level 32 of liquid 34 on the tray 28 will be maintained constant, the surplus amount of liquid 34 constantly spilling over the weir 26 into downcomer 24 and from there onto a lowemext bubble plate likewise not shown.
  • Such liquid flow is indicated in FIG. 1 by thick arrows referred to by reference character 60.
  • Mass transfer is effected by a gaseous medium such as vapor which rises from above the lowemext bubble plate into the chimneys 48 from where it bubbles through the liquid 34 in the form of bubbles 36 and flows towards the uppernext bubble plate as indicated in FIG. I by thin arrows designated by reference character 62.
  • liquid and gaseous medium meet in countercurrent flow (represented by the arrows 60 and 62) which is a known operational feature of bubble towers.
  • the amount of liquid inside the partitions 38 will be met by relatively more gaseous medium and, therefore, enriched in it with a corresponding decrease of the specific weight of the liquid. Consequently, the liquid inside the partitions 38 will likewise flow upwards until it reaches the partition brims and spills over into the bulk of the liquid 34 whether the liquid level 32 is higher or lower than the brim level 51 (FIG. 3).
  • FIGS. 5 to 8 differs from the previous one in three respects.
  • the channel 46 which connects the passages 42 and 44 of intercommunication is confined by the tray 28 and a bottom wall 72 therebeneath rather than by pipe conduits 56.
  • the chimneys 48 extend downwardly from the tray 28 through the bottom. wall72 and connect the perforations 30 in the tray 28 with the bottom side 72a of the bottom wall 72 or, in other words, with the space therebelow.
  • the passage 42 of intercommunication upstream in the proximity ofthe overflow weir 26 is a single oblong aperture which extends across the whole width of the tray 28 rather than a number of individual orifices opening into individual pipe conduits 56.
  • this is a .very preferable feature of the illustrated exemplified embodiment since, on the one hand, it means a possible low flow resistance against recirculation where the liquid enters the channel 46 and, on the other hand, it offers an unlimited access across the whole width of the tray 28 so that a bottom layer of the liquid 34 cannot fail to enter the channel 46 and, thereby, to ensure a uniform and complete recirculation of the whole amount of liquid which happens to be retained on the tray 28 by the overflow weir 26. 7
  • the completeness of recirculation is enhanced by a wall 74 by which the channel 46 is closed at the upstream apeces of the partitions 38 as goes forth particularly from FIG. 6.
  • the requirement of local decrease of the specific weight of the liquid in the axial passages 40 may also here be fulfilled in various manners.
  • the axially movable bubble caps 76 on chimneys 48 inside the partitions may be lighter than the others.
  • the designs of both types of bubble caps 76 and 78 may be quite identical as in the instant case.
  • the slots of the bubble caps 76 inside the partitions 38 may upwardly exceed the slots of the exterior bubble caps 78 thereby representing a decreased gas flow resistance with respect to the latter.
  • the diameters of the chimneys 48 inside the partitions 38 and of the bubble caps 76 on such chimneys may be greater than the corresponding dimensions of exterior chimneys and bubble caps.
  • Various combinations of the aforesaid expedients may likewise be employed as well as,-combinations with other features such as described hereinafter in connection with further exemplified embodiments.
  • the seal level 50 is obviously defined by the skirt brim of the bubble cap.
  • the level 50 of the seal must in all operational positions be lower than the level 51 of the top brim of the partition 38.
  • the exemplified embodiment of the invention shown in FIGS. 5 to 8 is distinguished over the previously described one by a more vigorous recirculation.
  • This can easily be judged by the pattern of arrows 70 of medium thickness (FIG. 6) which shows that-apart from the liquid which is spilling over the weir 26-the bulk of it across and along the whole plate 28 participates in the same uniform and even motion.
  • This is due to the cross-sectional flow areas between the passages 42 and 44 of intercommunication above and beneath the tray 28 being substantially equal .to one another which is the main advantage of the represented embodiment.
  • the passages 42 and 44 of intercommunication may easily be sized so as to have equal flow areas.
  • FIGS. 9 and '10 show an exemplified embodiment of the sieve or perforated plate type where the perforations of the tray 28 are formed by a great number of meshes or holes 30a in a sieve or foraminated plate, respectively, except inside the partition 38 where a perforation 30b of the hitherto described type is employed and sealed by what is called a floating cap or valve 80.
  • the seal level 50 coincides with the bottom brim of the valve 80. Upward displacements'are limited by prongs a on legs 80b of the valve 80.
  • the exemplified embodiment shown in FIG. 11 is distinguished from the previous one by uniform perforations 30 inside and outside the partition 38 all sealed by valves 80 and by pairwise arrangement of the partitions 38, as in case of the exemplified embodiment shown in FIGS. 1 to 4, the sectional view being taken through the nearside member of such pair.
  • the exemplified bubble plate illustrated in FIG. 12 is of the uniflux or turbogrid tray type where the perforations in the tray 28 are longitudinal slots 30c disposed transversely of the direction 60 of the main liquid flow.
  • the slots 300 are confined by a gridlike structure consisting of parts referred to by reference characters 82 and 84 which eclipses the slots 30 in, the direction 60 of the main flow of liquid in a manner well known in the art. If such structure 82, 84 is used for sealing the perforation inside the partition 38, the sealing level 50 would be determined by the bottom edge of grid part 84.
  • FIG. 13 represents an exemplified embodiment of the jet tray type.
  • the perforations 30 outside the partition 38 are formed by punching up semicircular tabs 86 from the body of the tray 28, the tabs 86 being inclined to the plate so as to give the gaseous medium a horizontal component of velocity in the direction 60 of the main liquid flow.
  • Chimney and bubble cap inside the partition might be replaced e.g. by tabs similar to the tabs 86outside the parti tion 38. Then, the seal level 50 would obviously be determined by the tops or apeces of the tabs 86.
  • all represented embodiments are of the erossflow of liquid type where the downcomers are at opposite sides of the tray so that the main liquid flow extends unidirectionally acrossthe whole of a plate.
  • the invention is feasible with so-called split-flow of liquid-type bubble plates as well with which the downcomers of alternate bubble plates are disposed centrally rather than peripherally whereas other bubble plates are provided with circumferential downcomers and central inflow.
  • gaseous medium was exemplified by references to vapors Obviously, other gaseous media such as gases or steam might be employed as well.
  • treating has been employed in the specification and claims to cover all sorts of contacting a liquid with a gaseous medium such as fractionating, distilling, absorbing, stripping and the like.
  • a method of treating a liquid with a gaseous medium in countercurrent flow with the gaseous medium flowing upwards and traversing a layer of the liquid on each bubble plate wherein the improvement consists in the step of recirculating a portion of such layer in a vertical plane by locally enriching the liquid in gaseous medium so as to decrease the specific weight of a portion of the layer with respect to the specific weight of other portions thereof, and to cause such other portions to flow beneath the layer to where the specific weight of it is relatively lower, such recirculation of the layer in a vertical plane resulting in substantially uniform composition of the liquid along the whole extension of recirculation.
  • a bubble plate for bubble towers comprising a tray, an overflow weir on the tray for retaining a certain amount of liquid thereon and sealed perforations in the tray for a gaseous medium flowing upwardly therethrough, the improvement of a partition remote from the overflow weir defining an axial passage on a sequestered and perforated portion of the tray with a seal on the perforation, and the level of the seal being lower than the level of the top brim of the partition, the flow resistance inside the partition against the flow of the gaseous medium being smaller than such flow resistance outside the partition, a passage of intercommunication in the tray upstream in the proximity of the overflow weir, another passage of intercommunication in the tray opening into the axial passage, and a channel connecting both passages of intercommunication with one another beneath the tray.
  • the seal on th chimney being an axially movable bubble cap arranged for permitting a bubbling of the gaseous medium from the chimney beneath the bubble cap into the axial passage inside the partition, the level of the skirt brim of the bubble cap being lower than the level of the top brim of the partition.
  • a bubble plate as claimed in claim 2 the improvement of a bottom wall beneath the tray, chimneys extending downwardly from the tray through the bottom wall and connecting the perforations in the tray with the bottom side of the bottom wall, the channel connecting both passages of intercommunication being confined by the tray and the bottom wall.
  • the passage of intercommunication in the tray upstream in the proximity of the overflow weir being a single oblong aperture which extends across the whole width of the tray.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
US792689*A 1968-07-25 1969-01-21 Bubble plates for bubble towers Expired - Lifetime US3584844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUPA000974 1968-07-25

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US3584844A true US3584844A (en) 1971-06-15

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US792689*A Expired - Lifetime US3584844A (en) 1968-07-25 1969-01-21 Bubble plates for bubble towers

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US (1) US3584844A (nl)
JP (1) JPS4937186B1 (nl)
AT (1) AT295480B (nl)
BE (1) BE736609A (nl)
DE (1) DE1937332C3 (nl)
FR (1) FR2013694A1 (nl)
GB (1) GB1279870A (nl)
NL (1) NL142077B (nl)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130102A (en) * 1990-06-11 1992-07-14 Chemical Research & Licensing Company Catalytic distillation reactor
US6105941A (en) * 1998-07-22 2000-08-22 Exxon Research And Engineering Company Vapor/liquid contacting cyclone with device to prevent backmixing and process for using the same
US20050082696A1 (en) * 2002-03-14 2005-04-21 Jacobs Garry E. Methods and apparatus for mixing fluids
WO2014111460A1 (en) * 2013-01-16 2014-07-24 Sulzer Chemtech Ag Hybrid contact tray for a mass transfer column
US20150352464A1 (en) * 2013-01-16 2015-12-10 Sulzer Chemtech Ag Hybrid Contact Tray for a Mass Transfer Column
CN106334400A (zh) * 2016-08-31 2017-01-18 刘卫东 垂直筛板式空气净化装置
CN113289485A (zh) * 2021-05-18 2021-08-24 宋政译 一种合成氨原料气湿法脱硫系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2743508B1 (fr) * 1996-01-12 1998-03-06 Charzat Claude Maurice Dispositif pour ameliorer ou permettre le contact, la separation et/ou l'echange de matieres et enceinte le contenant
US6189872B1 (en) * 1998-10-23 2001-02-20 Amt International, Inc. Froth activator apparatus and method
CN111375354B (zh) * 2018-12-31 2022-06-07 中国石油化工股份有限公司 一种气液传质设备
CN114130051B (zh) * 2021-12-08 2022-10-21 常州大学 一种浮阀传质元件

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH355437A (de) * 1956-01-16 1961-07-15 Walter Dipl Ing Kittel Kolonnenaustauschboden mit Mitteln zur Vergleichmässigung des Flüssigkeitsstandes und des Flüssigkeitsablaufes über die Bodenfläche

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH355437A (de) * 1956-01-16 1961-07-15 Walter Dipl Ing Kittel Kolonnenaustauschboden mit Mitteln zur Vergleichmässigung des Flüssigkeitsstandes und des Flüssigkeitsablaufes über die Bodenfläche

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130102A (en) * 1990-06-11 1992-07-14 Chemical Research & Licensing Company Catalytic distillation reactor
US6105941A (en) * 1998-07-22 2000-08-22 Exxon Research And Engineering Company Vapor/liquid contacting cyclone with device to prevent backmixing and process for using the same
US20050082696A1 (en) * 2002-03-14 2005-04-21 Jacobs Garry E. Methods and apparatus for mixing fluids
US7172179B2 (en) * 2002-03-14 2007-02-06 Fluor Technologies Corporation Methods and apparatus for mixing fluids
US20150352464A1 (en) * 2013-01-16 2015-12-10 Sulzer Chemtech Ag Hybrid Contact Tray for a Mass Transfer Column
CN105026005A (zh) * 2013-01-16 2015-11-04 苏舍化学技术有限公司 用于质量转移塔的混合接触托盘
WO2014111460A1 (en) * 2013-01-16 2014-07-24 Sulzer Chemtech Ag Hybrid contact tray for a mass transfer column
CN105026005B (zh) * 2013-01-16 2017-05-31 苏舍化学技术有限公司 用于质量转移塔的混合接触托盘
US9987566B2 (en) 2013-01-16 2018-06-05 Sulzer Chemtech Ag Hybrid contact tray for a mass transfer column
US9999842B2 (en) * 2013-01-16 2018-06-19 Sulzer Chemtech Ag Hybrid contact tray for a mass transfer column
CN106334400A (zh) * 2016-08-31 2017-01-18 刘卫东 垂直筛板式空气净化装置
CN113289485A (zh) * 2021-05-18 2021-08-24 宋政译 一种合成氨原料气湿法脱硫系统
CN113289485B (zh) * 2021-05-18 2024-05-17 重庆富源化工有限公司 一种合成氨原料气湿法脱硫系统

Also Published As

Publication number Publication date
JPS4937186B1 (nl) 1974-10-07
DE1937332C3 (de) 1974-07-25
AT295480B (de) 1972-01-10
BE736609A (nl) 1969-12-31
FR2013694A1 (nl) 1970-04-03
GB1279870A (en) 1972-06-28
DE1937332B2 (de) 1973-12-20
NL142077B (nl) 1974-05-15
DE1937332A1 (de) 1970-03-05
NL6911455A (nl) 1970-01-27

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