CA1201876A - Distributor/collector assembly - Google Patents
Distributor/collector assemblyInfo
- Publication number
- CA1201876A CA1201876A CA000415019A CA415019A CA1201876A CA 1201876 A CA1201876 A CA 1201876A CA 000415019 A CA000415019 A CA 000415019A CA 415019 A CA415019 A CA 415019A CA 1201876 A CA1201876 A CA 1201876A
- Authority
- CA
- Canada
- Prior art keywords
- support
- screen cylinder
- distributor
- support discs
- catalyst
- 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.)
- Expired
Links
Classifications
-
- 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
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0278—Feeding reactive fluids
-
- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
-
- 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
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
- B01J8/0492—Feeding reactive fluids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A distributor/collector assembly is composed of a screen cylinder, a perforated tube provided in the screen cylinder and support discs also provided in the screen cylinder. The screen cylinder is made of cylindrically arranged support rods and a wire screen wound helically on the support rods. The perforated tube is formed with apertures for distributing or collecting fluid which flows through the wire screen. The support discs support, on one hand, the screen cylinder on the outer peripher-ies thereof and, on the other, the perforated tube in the opening formed in the support discs in such a manner that space is defined between the tube and the screen cylinder. The dis-tributor/collector assembly can be buried in catalyst in a catalyst reactor and used as a distributor or collector.
A distributor/collector assembly is composed of a screen cylinder, a perforated tube provided in the screen cylinder and support discs also provided in the screen cylinder. The screen cylinder is made of cylindrically arranged support rods and a wire screen wound helically on the support rods. The perforated tube is formed with apertures for distributing or collecting fluid which flows through the wire screen. The support discs support, on one hand, the screen cylinder on the outer peripher-ies thereof and, on the other, the perforated tube in the opening formed in the support discs in such a manner that space is defined between the tube and the screen cylinder. The dis-tributor/collector assembly can be buried in catalyst in a catalyst reactor and used as a distributor or collector.
Description
Title o~ the Invention Distributor/collector assembly Background o the Inven-tion This invent:ion relates -to a cliskrib~1-tor/collec-tor assembly suitable Eor use as a dis-tribu-tor (or collector) in a column type of catalyst reactor, deodorizing apparatus or the like device.
The conventional column type catalyst reac-tor includes, a number of catalyst support grids provided in a reactor column.
Catalyst la~ers are disposed on -these catalyst support grids and distributors are suspended in the space above the catalys-t layers to distribute fluid (liquid or gas) over the catalyst layers (for convenience of explanation, description of the distributors will be made hereinafter as distrlbuting liquid). The liquid is dripped through numerous apertures formed in the distributors over the catalyst layers and is subjected to a desired reaction through the catalyst layers and then the liquid after reaction is taken ou-t of the reactor column through an outlet.
As will be understood from the above, the conventional catalyst reactor is of such a construction that the distributors are provided separatedly from the catalyst support grids. Such construction, however, requires a large number of -the catalyst support grids if there are many catalyst layers whic~ results in a high manufacturing cost. Besides, if the number of the catalyst layers increases, space required for providing the distributors increases as well resulting in requiremen-t of a huge reactor column with a substantial portion of its inside space being not t '~
``` ~2~ 37~
utilized for packing catalyst. Moreover, mounting of the prior ar-t distributors i.n the reactor column requires precision of the highest degree Eor the liquid must be evenly dis-tribUtecl from the distributors and the labor cost spent for -the moun-ting of the distributors amounts -to a considerable sum.
Summary of the Invention It i.s, therefore, an object of the presenet invention to provide a distributor which has eliminated the above described disadvantages of the prior art distributor in the column type catalyst reactor. According to the invention, a novel buried type distributor having both a fluid distribution (or collection) function and a catalyst retention function is provided. By disposing this distributor in the catalyst layer in a buried state, the catalys-t support grids which have been indispensable in the conventional reactor column are obviated, the labor cost for mounting the distributors in the reactor column is saved for the mounting position of the distributor according to the invention does not require such a high degree of precision as in the case oE
the prior art distributor, and moreover, the ef~iciency of space utilization in the reactor column is greatly improved for the catalyst does not have to be separated in plural layers even if the distributors are provided in plural stages.
In disposing a distributor in catalyst in a buried state, there arises the problem that while the ~uried distributor must have a suf~iciently rugged construction to bear a heavy load imposed by the catalyst, the construction must not allow occurrence of a turbulent flow or driEt of the liquid which is to ''~..~.~
~20~376 be evenly distributed. There also arises the problem, particularly in the catalyst reactor wherein catalyst is circulated in a system incLuding the reactor., -tha-t -the distributor must be of a construction which will not allow clogging of -the catalyst in openings Erom which the liquid is to be distributed.
-2a-7~
The above described problems can be completely overcome by the distributor/collector assembly according -to the invention which comprises a screen cylinder composed of a plurality of elongated support rods arranged cylindrically with a sui-table S distance between ad~acent rods and a wire screen member wound helically on said cylindrically arranged support rods, a tube disposed in said screen cylinder and formed wi-th a multiplicity of apertures for distributing or collecting fluid which flows through said wire screen member of said screen cylinder, and a plurality of support discs provided in said screen cylinder wi-th a suitable distance therebetween in such a manner that said support rods of said screen cylinder are supported on the outer periphery of said support discs, each of said support discs being formed with an opening for being fitted with said tube lS and supporting said tube in said screen cylinder in such a manner that space is defined between said tube and said wire screen member of said screen cylinder.
Preferred embodiments of the invention will now be described with reference to the accompanying drawings.
Brief Description of the Drawings In the accompanying drawings, Fig. 1 is a vertical sectional view of a prior art column type catalyst reactor;
Fig. 2 is a perspective view showing an embodiment of the aistributor/collector assembly according to the invention in a state in which a part of the screen cylinder is removed for the convenience of illustration;
Fig, 3(a) is a front vertical section of an example of a column type ca-talyst reactor in which the distributor/collector assembly according to -the invention is provided;
:120~B~
Fig. 3(b) is a cross sectional view of the catalyst reactor taken along lines ~-A in Fig. 3ta);
Fig. 3(c) is a vertical sectional view of -the catalys-t reactor taken along lines B-B in Fig. 3(a);
Fig. ~ is a view showing a st.ate in which liquid is diPfused from the distributor 21 shown in Figs. 3(a)-3(c); and Figs. 5, 6, 7 and 8 are perspective views showing, a part thereof being also removed, other embodiments of the distributor assembly according to the invention.
Description of Preferred Embodiments Flg. 2 shows a basic embodiment of the distributor/collector assembly according to the invention generally designated by a reference numeral 10. A reference numeral 18 designates a screen cylinder composed of elongated support rods 11 and a wire screen member 12. The support rods 11 are arranged cylindrically with a suitable distance between adjacent rods. The wire screen member 12 is of a wedge shape cross section and is wound helically on the cylindrically arranged support rods 11 with a suitable pitch.
Slits 12a are formed between respective adjacent wire portions.
The width of each slit 12 is determined depending upon the size of a catalyst particle.
A plurality of support discs 17 are provided in the screen c~linder 18 with a suitable distance between adjacent support discs 17 in the axial direction of the screen cylinder 18. The 25 support discs 17 are disposed in such a manner that the support rods 11 of the screen cylinder 18 are supported on the outer periphery of the respective support discs 17. Each of the support discs 17 is formed with a central opening 17a~
~ tube 13 is fitted in the central openings 17a of the support discs 17. The support discs 17 therefore supports the ~20~7~;
tube 13 in such a manner that space is defined between the tube 13 and the wire screen member 12 of the screen cylinder 18. The -tube 13 is formed with a multiplicity of small apertures 13a for distributing or collecting fluid which flows through -the slits 12a of the wire screen member 12. The support discs 17 in this example are further formed with openings 17b which are formed equidistantly in the disc portion about the central opening 17a for communicating spaces in the screen cylinder 18 which are separated from one another by -the support discs 17.
It will be apprecia-ted from the above description that the combination of the screen cylinder 18, the perforated tube 13 and the support discs 13 provi.des a unique structure in which the support discs 17 perform the dual functions of (l) support-ing the screen cylinder 18 against load applied inwardly from outside thus serving as reinforcing elements for the screen cylinder 18 and (2) supporting the tube 13 in the center of the screen cylinder 18 without requiring any other supporting devices.
Reverting to Fig. 2, a branch tube 14 is connected to the tube 13 which in turn is connected throuyh a coupling 16 to a pipe 15 of a system in which the cylindrical screen assembly is used. The ends of the screen cylinder 18 and the tube 17 - are respectively closed by suitable closing members.
For making the distributor/collector assembly 10, the support discs 17 are first fitted with the perforated tuhe 13, the support rods ll are welded with a suitable interval there-between to the support discs 17 by, e.g., spot welding, and finally the wire screen member 2 is wound on the support rods 11 with a predetermined pitch and welded thereon by, e.g., spot welding. Alternatively, the wire screen member 12 may be pressed ~21D~t5il7~;
to the support rods 11 by utilizing elasticity of the wire screen member 12. In this case, the welding of the wire screen member 12 to the support rods 11 may be omitted.
An ex~mple of using the assembly 10 in the column type catalyst reactor is shown in Figs. 3(a)-3(c). In this example, distributors 21 comprising a plu~ality of -the assemblies 10 are disposed in upper and lower stages in a single layer of catalyst 25 packed in a column 20. Each of the distribu-tors 21 includes the assemblies 10 arranged in parallel across the pipe 15 and connected to the pipe 15 through the branch tube 14 and the coupling 16. Each of the assemblies 10 is closed at both ends thereof by closing members 23 and mounted on a flange 20a secured to the inner wall of the column 20. A single layer of catalyst support grids 22 are provided in the lower portion of the column 15 20. The catalyst 25 is filled into the column from an inlet 20c of the column 20 until the distributors 21 in the respective stages are completely buried in the catalyst.
The liquid to be reacted is caused to flow through the pipe 15 into the perforated -tube 13 of each assembly 10 and diffused 20 into the catalyst 25 through the apertures 13a of the tube 13.
This state is shown in Fig. 4. As will be seen from this figure, since there is space defined between the tube 13 and the wire screen member 12, the liquid is diffused more evenly over a wider range of the catalyst layer than in a case where the tube 13 is buried in the catalyst layer in direct contact with the catalyst. It is also an advantage of the assembly of the present invention that the slits 12a of the wire screen member 12 are uniformly provided and there is no substantial barrier that will obstruct the diffusion of the liquid through the slits 12a in all directions so that no turbulence or drift of the liquid takes place in the distribution.
The liquid diffused into the catalyst 25 flows down in the catalyst layer and the expected reaction takes place during this flowing down of -the liquid. The llquid, having completed the reaction, is received in the catalyst support grids 22 and taken out of the co]umn 20 through openinys 22a of the grids 22 and an outlet 20d of -the column 20.
In the iIlustrated example, only one catalyst layer is provided and, since separation of the eatalyst layer is unneces-sary, the space inside of the column 20 can be utiliæed forfilling of the eatalyst to a maximum extent so that a maximum spaee efficiency ean be realized~ Moreover, sinee only one layer of the eatalyst support grids suffices/ the cost for the provision of the catalyst support grids can be saved. In the illustrated example, two stages of the distributors 21 are provided. It will be apparent, however, -that the above deseribed advantages will beeome more prominent if there are an increased number of stages of the distributors 21.
The distributor/eollector assembly aceording to the inven-tion ean be used only as a distributor but also as a collector.For example, the distributor 21 in the lower stage in the eolumn shown in Figs. 3(a)-3(e) may be used as the colleetor for collecting the liquid which has flown down ater completing reaction into the tube 13 through the slits 12a and taking out the liquid out of the column 20 through the pipe 15. In this case, the catalyst support grids 22 are not required and the outlet 20d of the column is closed. It is also possible to use the distributor/collector assemblies of the respective stages as the distributors for a certain period of time and, after completion of reaction, use the same assemblies as the collectors ~2~1fl'76 to collect the liquid after completion of the reaction.
The arrangement of the distributor/collector assemblies is not limited to the horizontal disposition as shown in Figs.
3(a)-3(c) but the assemblies may be disposed vertically, or obliquely and crosswisely or in a staggered arrangement.
Modified embodi~ents oE the cylindrical screen assemblies according to the invention are shown in Figs. 5, 6, 7 and 8.
Throughout these embodiments, the same componen-t parts as in the embodiment shown in Fig. 2 are designated by the same refer-ence numerals and detaileddescription thereof will be omitted.
In the embodiment shown in Fig. 5, a pair of support beams30 are fitted in slits 17c of the support discs 17 to connect these support discs 17 together and thereby to increase the strength of the distributor/collector assembly 10.
In khe embodiment shown in Fig. 6, beams of a relatively large width are used as support beams 31A and 31B. A sub-stantial portion of each of the beams 31A and 31B extends outside of the outer periphery of the support discs 17. The screen cylinder 18 is divided into two portions along a plane including its axis and the respective divided portions are welded to the support beams 31A and 31B on opposite sides thereof.
In the embodiment shown in Fig. 7, the space inside of the screen cylinder 18 is separated into two parts by a support beam 32 and two tubes 13-1 and 13-2 are provided in the respective parts.
In the embodiment of Fig. 8, wire screens 12-1 and 12-2 are provided concentrically with the screen cylinder 18.
Different kinds of catalysts are filled in the space between the inner wall surface of the column 20 and the outer wire screen 12-1, the space between the outer wire screen 12-1 and ~%~
the inner wire screen 12-2 and the space between -the inner screen 12-2 and the screen cylinder 18. The assembly is used as a vertical type dis-tributor. The liquid ejected from the apertures 13a of the tube 13 is diffused -through the screen cylinder 18, the inner wire screen 12-2 and the ou-ter wire screen 12-1 ancl reactions are carried out while -the liqui.d flows through the different catalyst layers.
The screen cylinder 18 in the above described embodiments are all of a circular cross section. The configuration of the screen cylinder 18 is not limited to this but may be of an elliptic, octagonal, hexagonal or the like cross section. The configuration of the support discs 17 can also be varied depend-ing upon the configuration of the screen cylinder 18. The wire screen member 12 should preferably be of a wedge-shape cross section but wires of other cross section may be used if they are capable of effectively preventing clogging of the slits 12a by catalyst particles.
In the above described embodiments, the distributor/col-lector assembly 10 is utilized as the distributor or collector in the catalyst reactor. The distributor/collector assembly 10 can be utilized as a dis~ributor or collector for various uses in other chemical processes such, for example, as a deodorizing apparatus.
The conventional column type catalyst reac-tor includes, a number of catalyst support grids provided in a reactor column.
Catalyst la~ers are disposed on -these catalyst support grids and distributors are suspended in the space above the catalys-t layers to distribute fluid (liquid or gas) over the catalyst layers (for convenience of explanation, description of the distributors will be made hereinafter as distrlbuting liquid). The liquid is dripped through numerous apertures formed in the distributors over the catalyst layers and is subjected to a desired reaction through the catalyst layers and then the liquid after reaction is taken ou-t of the reactor column through an outlet.
As will be understood from the above, the conventional catalyst reactor is of such a construction that the distributors are provided separatedly from the catalyst support grids. Such construction, however, requires a large number of -the catalyst support grids if there are many catalyst layers whic~ results in a high manufacturing cost. Besides, if the number of the catalyst layers increases, space required for providing the distributors increases as well resulting in requiremen-t of a huge reactor column with a substantial portion of its inside space being not t '~
``` ~2~ 37~
utilized for packing catalyst. Moreover, mounting of the prior ar-t distributors i.n the reactor column requires precision of the highest degree Eor the liquid must be evenly dis-tribUtecl from the distributors and the labor cost spent for -the moun-ting of the distributors amounts -to a considerable sum.
Summary of the Invention It i.s, therefore, an object of the presenet invention to provide a distributor which has eliminated the above described disadvantages of the prior art distributor in the column type catalyst reactor. According to the invention, a novel buried type distributor having both a fluid distribution (or collection) function and a catalyst retention function is provided. By disposing this distributor in the catalyst layer in a buried state, the catalys-t support grids which have been indispensable in the conventional reactor column are obviated, the labor cost for mounting the distributors in the reactor column is saved for the mounting position of the distributor according to the invention does not require such a high degree of precision as in the case oE
the prior art distributor, and moreover, the ef~iciency of space utilization in the reactor column is greatly improved for the catalyst does not have to be separated in plural layers even if the distributors are provided in plural stages.
In disposing a distributor in catalyst in a buried state, there arises the problem that while the ~uried distributor must have a suf~iciently rugged construction to bear a heavy load imposed by the catalyst, the construction must not allow occurrence of a turbulent flow or driEt of the liquid which is to ''~..~.~
~20~376 be evenly distributed. There also arises the problem, particularly in the catalyst reactor wherein catalyst is circulated in a system incLuding the reactor., -tha-t -the distributor must be of a construction which will not allow clogging of -the catalyst in openings Erom which the liquid is to be distributed.
-2a-7~
The above described problems can be completely overcome by the distributor/collector assembly according -to the invention which comprises a screen cylinder composed of a plurality of elongated support rods arranged cylindrically with a sui-table S distance between ad~acent rods and a wire screen member wound helically on said cylindrically arranged support rods, a tube disposed in said screen cylinder and formed wi-th a multiplicity of apertures for distributing or collecting fluid which flows through said wire screen member of said screen cylinder, and a plurality of support discs provided in said screen cylinder wi-th a suitable distance therebetween in such a manner that said support rods of said screen cylinder are supported on the outer periphery of said support discs, each of said support discs being formed with an opening for being fitted with said tube lS and supporting said tube in said screen cylinder in such a manner that space is defined between said tube and said wire screen member of said screen cylinder.
Preferred embodiments of the invention will now be described with reference to the accompanying drawings.
Brief Description of the Drawings In the accompanying drawings, Fig. 1 is a vertical sectional view of a prior art column type catalyst reactor;
Fig. 2 is a perspective view showing an embodiment of the aistributor/collector assembly according to the invention in a state in which a part of the screen cylinder is removed for the convenience of illustration;
Fig, 3(a) is a front vertical section of an example of a column type ca-talyst reactor in which the distributor/collector assembly according to -the invention is provided;
:120~B~
Fig. 3(b) is a cross sectional view of the catalyst reactor taken along lines ~-A in Fig. 3ta);
Fig. 3(c) is a vertical sectional view of -the catalys-t reactor taken along lines B-B in Fig. 3(a);
Fig. ~ is a view showing a st.ate in which liquid is diPfused from the distributor 21 shown in Figs. 3(a)-3(c); and Figs. 5, 6, 7 and 8 are perspective views showing, a part thereof being also removed, other embodiments of the distributor assembly according to the invention.
Description of Preferred Embodiments Flg. 2 shows a basic embodiment of the distributor/collector assembly according to the invention generally designated by a reference numeral 10. A reference numeral 18 designates a screen cylinder composed of elongated support rods 11 and a wire screen member 12. The support rods 11 are arranged cylindrically with a suitable distance between adjacent rods. The wire screen member 12 is of a wedge shape cross section and is wound helically on the cylindrically arranged support rods 11 with a suitable pitch.
Slits 12a are formed between respective adjacent wire portions.
The width of each slit 12 is determined depending upon the size of a catalyst particle.
A plurality of support discs 17 are provided in the screen c~linder 18 with a suitable distance between adjacent support discs 17 in the axial direction of the screen cylinder 18. The 25 support discs 17 are disposed in such a manner that the support rods 11 of the screen cylinder 18 are supported on the outer periphery of the respective support discs 17. Each of the support discs 17 is formed with a central opening 17a~
~ tube 13 is fitted in the central openings 17a of the support discs 17. The support discs 17 therefore supports the ~20~7~;
tube 13 in such a manner that space is defined between the tube 13 and the wire screen member 12 of the screen cylinder 18. The -tube 13 is formed with a multiplicity of small apertures 13a for distributing or collecting fluid which flows through -the slits 12a of the wire screen member 12. The support discs 17 in this example are further formed with openings 17b which are formed equidistantly in the disc portion about the central opening 17a for communicating spaces in the screen cylinder 18 which are separated from one another by -the support discs 17.
It will be apprecia-ted from the above description that the combination of the screen cylinder 18, the perforated tube 13 and the support discs 13 provi.des a unique structure in which the support discs 17 perform the dual functions of (l) support-ing the screen cylinder 18 against load applied inwardly from outside thus serving as reinforcing elements for the screen cylinder 18 and (2) supporting the tube 13 in the center of the screen cylinder 18 without requiring any other supporting devices.
Reverting to Fig. 2, a branch tube 14 is connected to the tube 13 which in turn is connected throuyh a coupling 16 to a pipe 15 of a system in which the cylindrical screen assembly is used. The ends of the screen cylinder 18 and the tube 17 - are respectively closed by suitable closing members.
For making the distributor/collector assembly 10, the support discs 17 are first fitted with the perforated tuhe 13, the support rods ll are welded with a suitable interval there-between to the support discs 17 by, e.g., spot welding, and finally the wire screen member 2 is wound on the support rods 11 with a predetermined pitch and welded thereon by, e.g., spot welding. Alternatively, the wire screen member 12 may be pressed ~21D~t5il7~;
to the support rods 11 by utilizing elasticity of the wire screen member 12. In this case, the welding of the wire screen member 12 to the support rods 11 may be omitted.
An ex~mple of using the assembly 10 in the column type catalyst reactor is shown in Figs. 3(a)-3(c). In this example, distributors 21 comprising a plu~ality of -the assemblies 10 are disposed in upper and lower stages in a single layer of catalyst 25 packed in a column 20. Each of the distribu-tors 21 includes the assemblies 10 arranged in parallel across the pipe 15 and connected to the pipe 15 through the branch tube 14 and the coupling 16. Each of the assemblies 10 is closed at both ends thereof by closing members 23 and mounted on a flange 20a secured to the inner wall of the column 20. A single layer of catalyst support grids 22 are provided in the lower portion of the column 15 20. The catalyst 25 is filled into the column from an inlet 20c of the column 20 until the distributors 21 in the respective stages are completely buried in the catalyst.
The liquid to be reacted is caused to flow through the pipe 15 into the perforated -tube 13 of each assembly 10 and diffused 20 into the catalyst 25 through the apertures 13a of the tube 13.
This state is shown in Fig. 4. As will be seen from this figure, since there is space defined between the tube 13 and the wire screen member 12, the liquid is diffused more evenly over a wider range of the catalyst layer than in a case where the tube 13 is buried in the catalyst layer in direct contact with the catalyst. It is also an advantage of the assembly of the present invention that the slits 12a of the wire screen member 12 are uniformly provided and there is no substantial barrier that will obstruct the diffusion of the liquid through the slits 12a in all directions so that no turbulence or drift of the liquid takes place in the distribution.
The liquid diffused into the catalyst 25 flows down in the catalyst layer and the expected reaction takes place during this flowing down of -the liquid. The llquid, having completed the reaction, is received in the catalyst support grids 22 and taken out of the co]umn 20 through openinys 22a of the grids 22 and an outlet 20d of -the column 20.
In the iIlustrated example, only one catalyst layer is provided and, since separation of the eatalyst layer is unneces-sary, the space inside of the column 20 can be utiliæed forfilling of the eatalyst to a maximum extent so that a maximum spaee efficiency ean be realized~ Moreover, sinee only one layer of the eatalyst support grids suffices/ the cost for the provision of the catalyst support grids can be saved. In the illustrated example, two stages of the distributors 21 are provided. It will be apparent, however, -that the above deseribed advantages will beeome more prominent if there are an increased number of stages of the distributors 21.
The distributor/eollector assembly aceording to the inven-tion ean be used only as a distributor but also as a collector.For example, the distributor 21 in the lower stage in the eolumn shown in Figs. 3(a)-3(e) may be used as the colleetor for collecting the liquid which has flown down ater completing reaction into the tube 13 through the slits 12a and taking out the liquid out of the column 20 through the pipe 15. In this case, the catalyst support grids 22 are not required and the outlet 20d of the column is closed. It is also possible to use the distributor/collector assemblies of the respective stages as the distributors for a certain period of time and, after completion of reaction, use the same assemblies as the collectors ~2~1fl'76 to collect the liquid after completion of the reaction.
The arrangement of the distributor/collector assemblies is not limited to the horizontal disposition as shown in Figs.
3(a)-3(c) but the assemblies may be disposed vertically, or obliquely and crosswisely or in a staggered arrangement.
Modified embodi~ents oE the cylindrical screen assemblies according to the invention are shown in Figs. 5, 6, 7 and 8.
Throughout these embodiments, the same componen-t parts as in the embodiment shown in Fig. 2 are designated by the same refer-ence numerals and detaileddescription thereof will be omitted.
In the embodiment shown in Fig. 5, a pair of support beams30 are fitted in slits 17c of the support discs 17 to connect these support discs 17 together and thereby to increase the strength of the distributor/collector assembly 10.
In khe embodiment shown in Fig. 6, beams of a relatively large width are used as support beams 31A and 31B. A sub-stantial portion of each of the beams 31A and 31B extends outside of the outer periphery of the support discs 17. The screen cylinder 18 is divided into two portions along a plane including its axis and the respective divided portions are welded to the support beams 31A and 31B on opposite sides thereof.
In the embodiment shown in Fig. 7, the space inside of the screen cylinder 18 is separated into two parts by a support beam 32 and two tubes 13-1 and 13-2 are provided in the respective parts.
In the embodiment of Fig. 8, wire screens 12-1 and 12-2 are provided concentrically with the screen cylinder 18.
Different kinds of catalysts are filled in the space between the inner wall surface of the column 20 and the outer wire screen 12-1, the space between the outer wire screen 12-1 and ~%~
the inner wire screen 12-2 and the space between -the inner screen 12-2 and the screen cylinder 18. The assembly is used as a vertical type dis-tributor. The liquid ejected from the apertures 13a of the tube 13 is diffused -through the screen cylinder 18, the inner wire screen 12-2 and the ou-ter wire screen 12-1 ancl reactions are carried out while -the liqui.d flows through the different catalyst layers.
The screen cylinder 18 in the above described embodiments are all of a circular cross section. The configuration of the screen cylinder 18 is not limited to this but may be of an elliptic, octagonal, hexagonal or the like cross section. The configuration of the support discs 17 can also be varied depend-ing upon the configuration of the screen cylinder 18. The wire screen member 12 should preferably be of a wedge-shape cross section but wires of other cross section may be used if they are capable of effectively preventing clogging of the slits 12a by catalyst particles.
In the above described embodiments, the distributor/col-lector assembly 10 is utilized as the distributor or collector in the catalyst reactor. The distributor/collector assembly 10 can be utilized as a dis~ributor or collector for various uses in other chemical processes such, for example, as a deodorizing apparatus.
Claims (4)
PROPERTY OF PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:-
1. A distributor/collector assembly comprising:
a screen cylinder composed of a plurality of elongated support rods arranged cylindrically with a suitable distance between adjacent rods and a wire screen member wound helically on said cylindrically arranged support rods;
a tube disposed in said screen cylinder and formed with a multiplicity of apertures for distributing or collecting fluid which flows through said wire screen member of said screen cylinder; and a plurality of support discs provided in said screen cylinder with a suitable distance therebetween in such a manner that said support rods of said screen cylinder are supported on the outer periphery of said support discs, each of said support discs being formed with an opening for being fitted with said tube and supporting said tube in said screen cylinder in such a manner that space is defined between said tube and said wire screen member of said screen cylinder.
a screen cylinder composed of a plurality of elongated support rods arranged cylindrically with a suitable distance between adjacent rods and a wire screen member wound helically on said cylindrically arranged support rods;
a tube disposed in said screen cylinder and formed with a multiplicity of apertures for distributing or collecting fluid which flows through said wire screen member of said screen cylinder; and a plurality of support discs provided in said screen cylinder with a suitable distance therebetween in such a manner that said support rods of said screen cylinder are supported on the outer periphery of said support discs, each of said support discs being formed with an opening for being fitted with said tube and supporting said tube in said screen cylinder in such a manner that space is defined between said tube and said wire screen member of said screen cylinder.
2. A distributor/collector assembly as defined in Claim 1 wherein said support discs are formed with a pair of slits in diametrically opposed positions in said support discs and which further comprises a pair of support beams which are fitted in said slits of said support discs to connect said support discs together.
3. A distributor/collector assembly as defined in Claim 1 wherein said support discs are formed with a plurality of said openings and a plurality of said tubes are fitted in said openings.
4. A distributor/collector assembly as defined in any of Claims 1, 2 and 3 wherein said support discs are formed with openings for communicating spaces defined between said support discs and said screen cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP177901/1981 | 1981-11-06 | ||
| JP56177901A JPS5932178B2 (en) | 1981-11-06 | 1981-11-06 | Multi-hole tube-encased screen tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1201876A true CA1201876A (en) | 1986-03-18 |
Family
ID=16039037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000415019A Expired CA1201876A (en) | 1981-11-06 | 1982-11-05 | Distributor/collector assembly |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS5932178B2 (en) |
| KR (1) | KR880001995B1 (en) |
| AR (1) | AR228692A1 (en) |
| AU (1) | AU537473B2 (en) |
| BE (1) | BE894919A (en) |
| BR (1) | BR8206427A (en) |
| CA (1) | CA1201876A (en) |
| DE (1) | DE3240987C2 (en) |
| FR (1) | FR2515982B1 (en) |
| GB (1) | GB2110106B (en) |
| IT (1) | IT1218329B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147852B (en) * | 2006-09-20 | 2010-09-01 | 中国石油化工股份有限公司 | Multistage insulation fixed bed reactor |
| DE102006060507A1 (en) * | 2006-12-19 | 2008-06-26 | Basf Se | Reactor for carrying out a reaction between two fluid educts on a catalyst bed with premixing of the fluid educts in a mixing device |
| DE102006060509A1 (en) * | 2006-12-19 | 2008-06-26 | Basf Se | Reactor for continuous oxide hydrogenation of feed gas flow of saturated hydrocarbons on moving catalyst bed, comprises four reactor sections, which are separated from each other and split into sub-sections by alternating deflector plates |
| TW200936245A (en) * | 2007-10-30 | 2009-09-01 | Basf Se | Horizontal reactor for reacting a fluid feed stream with a fluid oxidant stream in the presence of a solid catalyst |
| FR2974739B1 (en) * | 2011-05-03 | 2016-03-11 | Commissariat Energie Atomique | SOLID REACTOR MODULE / HEAT PUMP COMPRISING GAS DIFFUSERS WITH REDUCED SHUTDOWN HAZARDS |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT139112B (en) * | 1931-10-17 | 1934-10-25 | Houdry Process Corp | Device for distributing a medium in a contact mass filling a reaction device. |
| FR1529137A (en) * | 1966-10-28 | 1968-06-14 | Exxon Research Engineering Co | Fluid flow distributor |
| US3592613A (en) * | 1968-12-30 | 1971-07-13 | Universal Oil Prod Co | Apparatus for fluid distribution in a fluid-solids contacting chamber |
| GB2065492B (en) * | 1979-12-21 | 1983-10-19 | Uop Inc | Fluid distributor for fixed-bed catalytic reaction zones |
-
1981
- 1981-11-06 JP JP56177901A patent/JPS5932178B2/en not_active Expired
-
1982
- 1982-11-01 AU AU90062/82A patent/AU537473B2/en not_active Ceased
- 1982-11-01 GB GB08231214A patent/GB2110106B/en not_active Expired
- 1982-11-02 KR KR8204942A patent/KR880001995B1/en active
- 1982-11-05 AR AR291213A patent/AR228692A1/en active
- 1982-11-05 IT IT24109/82A patent/IT1218329B/en active
- 1982-11-05 BE BE2/59900A patent/BE894919A/en not_active IP Right Cessation
- 1982-11-05 BR BR8206427A patent/BR8206427A/en not_active IP Right Cessation
- 1982-11-05 CA CA000415019A patent/CA1201876A/en not_active Expired
- 1982-11-05 DE DE3240987A patent/DE3240987C2/en not_active Expired
- 1982-11-05 FR FR8218569A patent/FR2515982B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2110106B (en) | 1985-04-24 |
| BE894919A (en) | 1983-03-01 |
| GB2110106A (en) | 1983-06-15 |
| FR2515982B1 (en) | 1987-04-30 |
| AU537473B2 (en) | 1984-06-28 |
| AU9006282A (en) | 1983-05-26 |
| KR840002257A (en) | 1984-06-25 |
| KR880001995B1 (en) | 1988-10-11 |
| BR8206427A (en) | 1983-09-27 |
| IT1218329B (en) | 1990-04-12 |
| JPS5932178B2 (en) | 1984-08-07 |
| DE3240987A1 (en) | 1983-07-14 |
| DE3240987C2 (en) | 1985-09-19 |
| JPS5879537A (en) | 1983-05-13 |
| IT8224109A0 (en) | 1982-11-05 |
| AR228692A1 (en) | 1983-03-30 |
| FR2515982A1 (en) | 1983-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |