[go: up one dir, main page]

WO1998002239A1 - Method and device for emptying a tube reactor - Google Patents

Method and device for emptying a tube reactor Download PDF

Info

Publication number
WO1998002239A1
WO1998002239A1 PCT/EP1997/003876 EP9703876W WO9802239A1 WO 1998002239 A1 WO1998002239 A1 WO 1998002239A1 EP 9703876 W EP9703876 W EP 9703876W WO 9802239 A1 WO9802239 A1 WO 9802239A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
tube
particles
pressure
emptying
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.)
Ceased
Application number
PCT/EP1997/003876
Other languages
French (fr)
Inventor
Pieter Hendrik Jacob Van Der Schee
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.)
BOOY SUPPORT BV
Original Assignee
BOOY SUPPORT BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BOOY SUPPORT BV filed Critical BOOY SUPPORT BV
Priority to AU40112/97A priority Critical patent/AU4011297A/en
Publication of WO1998002239A1 publication Critical patent/WO1998002239A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B01J8/06—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 in tube reactors; the solid particles being arranged in tubes
    • 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
    • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
    • B01J8/002—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor with a moving instrument
    • 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
    • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
    • B01J8/0025—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor by an ascending fluid
    • 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
    • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
    • B01J8/004—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor by means of a nozzle
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00743—Feeding or discharging of solids
    • B01J2208/00761—Discharging

Definitions

  • the present invention concerns a method for emptying the tubes of a tube reactor filled with particles.
  • Such tube reactors contain a bundle of usually vertical tubes which are filled with particles, usually catalyst particles, through which gases are led which are to react. Said bundle is erected in a reactor vessel.
  • Tube reactors of this type are the ethylene oxide, acrylic acid or terephthalic acid reactors.
  • the invention aims a method which does not show these and other disadvantages and which allows for a rapid emptying of the tubes of the tube reactor.
  • This aim is reached according to the invention by connecting a first pipe to one end of each tube to be emptied and by introducing a second, inner pipe in the tube through the first pipe, whereby gas under pressure is injected in the tube via one of the pipes in order to detach the particles, and whereby the detached particles are extracted via another pipe.
  • This method reduces the work to a minimum, it is ecologically sound and fast.
  • the tubes are slightly blasted on the inside, so that any possible corroded layers are removed.
  • every tube is or will be closed off to the particles by means of a gauze or a plug.
  • the above-mentioned pipe is connected to the other end.
  • Gas under pressure is preferably injected in the tube via the inner pipe, whereas the extraction is carried out via the other pipe, in particular the space between this other pipe and the inner pipe.
  • Compressed air can be used as gas under pressure, having for example a pressure of 7 to 12 bar and a flow rate of 12 to 25 m 3 per minute, for example 22 m 3 per minute.
  • the extraction is preferably carried out at a flow rate of at least 100 m 3 per minute, for example at a flow rate of 100 to 120 m 3 per minute.
  • the end of the tubes situated opposite the end onto which the pipe is connected can be cleared, and these tubes can be further cleaned by pushing brushes through them. Following this process, the tubes can also be blown through in order to remove the last remainders of dus .
  • the invention also concerns a device which is particularly suitable to carry out the method according to any of the preceding embodiments.
  • Such a device for emptying a tube reactor contains at least one pair of pipes which overlap partly, namely a suction pipe connected to a suction unit and a pressure pipe connected to a compressor, whereby either of these pipes is provided with an opening through which the other pipe can be inserted.
  • one of the pipes in particular the suction pipe, has means with which to connect to the tube to be emptied, whereas the other pipe is a flexible pipe.
  • the pressure pipe can be provided with a nozzle at one end.
  • figure 1 schematically represents a device according to the invention
  • figure 2 represents the part indicated with F2 in figure 1 to a larger scale.
  • a suction pipe 2 which is connected to a vacuum or suction unit 3 and a pressure pipe 4 connected to a compressor 5.
  • This compressor has a capacity of at least 15 m 3 per minute at a pressure of at least 7 bar, whereas the suction unit can suck in at a rate of some 100 m 3 per minute at the least .
  • All flow rates are normal flow rates, i.e. measured under atmospheric pressure and at room temperature.
  • the suction pipe 2 is a pipe having a diameter which is almost equal to the diameter of the tube 1.
  • One end of the suction pipe 2 is hereby provided with means 6 to connect inside or around the top end of the tube 1 to be cleaned.
  • these means 6 consist of an elastic ring provided around the end of the suction pipe 2 and which can fit against the tube plate 7 around the tube 1.
  • this suction pipe 2 is provided with an opening 8, for example a slot, in its wall through which the pressure pipe 4 is inserted.
  • This pressure pipe 4 consists of a coil 9 having a length of for example 14 m and a nozzle 10 at the end thereof.
  • the emptying of the tube 1 is very simple and as follows.
  • This tube 1 is temporarily sealed, for example by means of a conical plug or a gauze.
  • the suction pipe 2 is connected at the top end, i.e. around the tube opening at the top end of the tube 1 , and placed against the tube plate 7.
  • the suction unit 3 and the compressor 5 are activated, and the suction pipe 2 is held manually against the tube plate .
  • the compressed air blown in via the nozzle 10 of the pressure pipe 4
  • the particles 11 are detached, whereas the detached particles are sucked up by the suction pipe 2 and are discharged to a storage tank.
  • a suction rate of 6,500 m 3 per hour is sufficient. Normally, this suction rate amounts to 100 and 120 m 3 per minute .
  • a pressure of 7 bar and a flow rate of 22 m 3 per minute are suitable.
  • Smaller tubes 1 require a larger pressure of 10 to 12 bar, whereas a smaller flow of about 15 3 per minute is sufficient, as the coil 9 and the nozzle 10 are smaller.
  • the tubes 1 are mainly filled with catalyst particles and a layer of ceramic particles on top.
  • the ceramic particles are removed first from the tube 1 and they are possibly filtered for re-use; only then are removed the catalyst particles which need to be replaced.
  • the tubes 1 can be emptied one after the other in the above-described manner. However, it is clear that several tubes 1, even of different reactors, can be emptied simultaneously.
  • a suction pipe 2 and a pressure pipe 4 are connected to each tube in the above-described manner, whereby all suction pipes can be connected to one and the same suction unit 3 and all pressure pipes 4 can be connected to one and the same compressor 5.
  • the tubes can be cleaned one by one or simultaneously.
  • the bottom end of the tube 1 to be cleaned is opened, after which one or several special scrubbing brushes are pushed through said tube once or several times by means of compressed air.
  • the tube 1 is blown through so as to remove the last remainders of dust .
  • cleaning stages can be applied to several tubes 1 simultaneously.
  • the above-described emptying of the tubes 1 can be carried out very quickly with a minimum of man-hours.
  • the additional cleaning in the above-described manner is advantageous, rapid and safe, since the conventional blasting of the tubes is time-consuming and expensive and can moreover damage the tubes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cleaning In General (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Method for emptying the tubes (1) of a tube reactor filled with particles (11), characterized in that a first pipe (2) is connected to one end of each tube (1) to be emptied and by introducing a second, inner pipe (4) in the tube (1) through the first pipe (2), whereby gas under pressure is injected in the tube (1) via one of the pipes (4) in order to detach the particles (11), and whereby the detached particles are extracted via the other pipe (2).

Description

Method and device for emptying a tube reactor.
The present invention concerns a method for emptying the tubes of a tube reactor filled with particles.
Such tube reactors contain a bundle of usually vertical tubes which are filled with particles, usually catalyst particles, through which gases are led which are to react. Said bundle is erected in a reactor vessel.
Tube reactors of this type are the ethylene oxide, acrylic acid or terephthalic acid reactors.
From time to time, the particles in these tubes must be replaced or removed, whereby the tubes thus need to be emptied.
It is known to empty them by poking out the particles via one end of the tubes, usually the bottom end, which is of course very time-consuming. Moreover, the particles can end up in the environment .
The invention aims a method which does not show these and other disadvantages and which allows for a rapid emptying of the tubes of the tube reactor.
This aim is reached according to the invention by connecting a first pipe to one end of each tube to be emptied and by introducing a second, inner pipe in the tube through the first pipe, whereby gas under pressure is injected in the tube via one of the pipes in order to detach the particles, and whereby the detached particles are extracted via another pipe.
It is possible to empty the tubes either one by one in this manner, several at once or all simultaneously.
This method reduces the work to a minimum, it is ecologically sound and fast.
The tubes are slightly blasted on the inside, so that any possible corroded layers are removed.
At the end, in particular the bottom end, every tube is or will be closed off to the particles by means of a gauze or a plug. The above-mentioned pipe is connected to the other end.
Gas under pressure is preferably injected in the tube via the inner pipe, whereas the extraction is carried out via the other pipe, in particular the space between this other pipe and the inner pipe.
Compressed air can be used as gas under pressure, having for example a pressure of 7 to 12 bar and a flow rate of 12 to 25 m3 per minute, for example 22 m3 per minute.
The extraction is preferably carried out at a flow rate of at least 100 m3 per minute, for example at a flow rate of 100 to 120 m3 per minute.
After the emptying, the end of the tubes situated opposite the end onto which the pipe is connected can be cleared, and these tubes can be further cleaned by pushing brushes through them. Following this process, the tubes can also be blown through in order to remove the last remainders of dus .
The invention also concerns a device which is particularly suitable to carry out the method according to any of the preceding embodiments.
Such a device for emptying a tube reactor contains at least one pair of pipes which overlap partly, namely a suction pipe connected to a suction unit and a pressure pipe connected to a compressor, whereby either of these pipes is provided with an opening through which the other pipe can be inserted.
Preferably, one of the pipes, in particular the suction pipe, has means with which to connect to the tube to be emptied, whereas the other pipe is a flexible pipe. The pressure pipe can be provided with a nozzle at one end.
In order to better explain the characteristics of the invention, the following preferred embodiment of a method and device for cleaning a tube reactor according to the invention is described as an example only without being limitative in any way, with reference to the accompanying drawing, in which: figure 1 schematically represents a device according to the invention; figure 2 represents the part indicated with F2 in figure 1 to a larger scale.
In order to empty a tube 1 of a vertical bundle of tubes of a tube reactor, use is made of the device as represented in the figure which mainly consists of a pair of pipes, namely a suction pipe 2 which is connected to a vacuum or suction unit 3 and a pressure pipe 4 connected to a compressor 5.
This compressor has a capacity of at least 15 m3 per minute at a pressure of at least 7 bar, whereas the suction unit can suck in at a rate of some 100 m3 per minute at the least .
All flow rates are normal flow rates, i.e. measured under atmospheric pressure and at room temperature.
The suction pipe 2 is a pipe having a diameter which is almost equal to the diameter of the tube 1.
One end of the suction pipe 2 is hereby provided with means 6 to connect inside or around the top end of the tube 1 to be cleaned. In the example shown, these means 6 consist of an elastic ring provided around the end of the suction pipe 2 and which can fit against the tube plate 7 around the tube 1.
At a short distance from the above-mentioned end, this suction pipe 2 is provided with an opening 8, for example a slot, in its wall through which the pressure pipe 4 is inserted.
This pressure pipe 4 consists of a coil 9 having a length of for example 14 m and a nozzle 10 at the end thereof.
The emptying of the tube 1 is very simple and as follows.
The bottom end of this tube 1 is temporarily sealed, for example by means of a conical plug or a gauze. The suction pipe 2 is connected at the top end, i.e. around the tube opening at the top end of the tube 1 , and placed against the tube plate 7.
Through the opening 8 in this suction pipe 2 is provided the coil 9 of the pressure pipe 4. This coil 9 is pushed inside the suction pipe 2 until the nozzle 10 reaches the particles 11 in the tube 1.
The suction unit 3 and the compressor 5 are activated, and the suction pipe 2 is held manually against the tube plate .
Thanks to the compressed air, blown in via the nozzle 10 of the pressure pipe 4, the particles 11 are detached, whereas the detached particles are sucked up by the suction pipe 2 and are discharged to a storage tank.
A suction rate of 6,500 m3 per hour is sufficient. Normally, this suction rate amounts to 100 and 120 m3 per minute .
For tubes having a diameter between 21 and 40 mm, a pressure of 7 bar and a flow rate of 22 m3 per minute are suitable. Smaller tubes 1 require a larger pressure of 10 to 12 bar, whereas a smaller flow of about 15 3 per minute is sufficient, as the coil 9 and the nozzle 10 are smaller.
With ethylene oxide reactors and some other reactors, the tubes 1 are mainly filled with catalyst particles and a layer of ceramic particles on top. In such cases, the ceramic particles are removed first from the tube 1 and they are possibly filtered for re-use; only then are removed the catalyst particles which need to be replaced.
The tubes 1 can be emptied one after the other in the above-described manner. However, it is clear that several tubes 1, even of different reactors, can be emptied simultaneously.
A suction pipe 2 and a pressure pipe 4 are connected to each tube in the above-described manner, whereby all suction pipes can be connected to one and the same suction unit 3 and all pressure pipes 4 can be connected to one and the same compressor 5.
After a tube 1 or a group of tubes has been emptied, the tubes can be cleaned one by one or simultaneously.
To this end, the bottom end of the tube 1 to be cleaned is opened, after which one or several special scrubbing brushes are pushed through said tube once or several times by means of compressed air.
Use can be made to this end of the pressure pipe 4.
Afterwards, the tube 1 is blown through so as to remove the last remainders of dust .
Also the cleaning stages can be applied to several tubes 1 simultaneously.
The above-described emptying of the tubes 1 can be carried out very quickly with a minimum of man-hours.
Especially with ethylene oxide reactors, the additional cleaning in the above-described manner is advantageous, rapid and safe, since the conventional blasting of the tubes is time-consuming and expensive and can moreover damage the tubes.
The present invention is by no means restricted to the above-described embodiment as represented in the figures; on the contrary, such a method and device for emptying and possibly cleaning the tubes of a tube reactor can be made in all sorts of variants while still remaining within the scope of the invention.

Claims

Claims .
1. Method for emptying the tubes (1) of a tube reactor filled with particles (11) , characterized in that a first pipe (2) is connected to one end of each tube (1) to be emptied and by introducing a second, inner pipe (4) in the tube (1) through the first pipe (2) , whereby gas under pressure is injected in the tube (1) via one of the pipes (4) in order to detach the particles (11) , and whereby the detached particles are extracted via the other pipe (2) .
2. Method according to claim 1, characterized in that every tube is closed off to the particles (11) at one end, in particular at the bottom end, and in that the above-mentioned pipe (2) is connected to the other end.
3. Method according to claim 1 or 2 , characterized in that gas under pressure is injected in the tube (1) via the inner pipe, which is a pressure pipe (4) , whereas the extraction is carried out via the other pipe, which is a suction pipe (2) .
4. Method according to any of the preceding claims, characterized in that compressed air is used as gas under pressure.
5. Method according to any of the preceding claims, characterized in that gas under pressure is injected in the tube (1) at a pressure of 7 to 12 bar and at a flow rate of 12 to 25 m3 per minute.
6. Method according to any of the preceding claims, characterized in that the extraction is carried out at a suction rate of at least 100 m3 per minute.
7. Method according to any of the preceding claims, characterized in that, after the emptying, the end of the tube (1) situated opposite the end onto which the pipe (2) is connected is cleared, and in that this tube (1) is cleaned by pushing at least one brush through it by means of gas under pressure.
8. Method according to claim 7, characterized in that this cleaning is followed by the blowing through of the tube (1) in order to remove the last remainders of dust.
9. Device for emptying a tube reactor according to the method of any of the preceding claims, characterized in that it contains at least one pair of pipes which overlap partly, namely a suction pipe (2) connected to a suction unit (3) and a pressure pipe (4) connected to a compressor (5) , whereby either of these pipes (4) is provided with an opening (8) through which the other pipe (2) can be inserted.
10. Device according to claim 9, characterized in that one of the pipes (4) has means (6) with which to connect to the tube (1) to be emptied, whereas the other pipe (2) is a flexible pipe.
11. Device according to any of claims 9 and 10, characterized in that the pressure pipe (4) consists of a coil (9) which is provided with a nozzle (10) at one end.
PCT/EP1997/003876 1996-07-16 1997-07-15 Method and device for emptying a tube reactor Ceased WO1998002239A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU40112/97A AU4011297A (en) 1996-07-16 1997-07-15 Method and device for emptying a tube reactor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9600649A BE1010433A3 (en) 1996-07-16 1996-07-16 Method and device for emptying of a pipe reactor.
BE9600649 1996-07-16

Publications (1)

Publication Number Publication Date
WO1998002239A1 true WO1998002239A1 (en) 1998-01-22

Family

ID=3889887

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/003876 Ceased WO1998002239A1 (en) 1996-07-16 1997-07-15 Method and device for emptying a tube reactor

Country Status (3)

Country Link
AU (1) AU4011297A (en)
BE (1) BE1010433A3 (en)
WO (1) WO1998002239A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1226865A3 (en) * 2001-01-25 2004-01-21 Nippon Shokubai Co., Ltd. Process for extracting solid material from shell-and-tube reactor
EP1967260A3 (en) * 2007-03-01 2008-09-24 Rohm and Haas Company Apparatus and method for dislodging and extracting solid materials from tubes
WO2008145739A1 (en) * 2007-06-01 2008-12-04 Basf Se Method of recharging the reaction tube of a tube-bundle reactor with a new catalyst fixed bed
US7878225B2 (en) * 2006-12-18 2011-02-01 Tubemaster, Inc. Vacuum attachment and method
WO2011051102A1 (en) 2009-10-26 2011-05-05 Exxonmobil Chemical Patents Inc. Improved phthalic anhydride process
EP1525178B2 (en) † 2002-07-18 2013-09-25 Basf Se Method for the heterogeneously-catalysed gas phase partial oxidation of at least one organic compound
EP2705900A1 (en) * 2012-09-10 2014-03-12 Petroval Process and device for unloading particulate material from a vessel
JP2014055274A (en) * 2012-09-14 2014-03-27 System Kikou Co Ltd Gas injection device for taking out catalyst and method for taking out catalyst
CN109661267A (en) * 2016-07-08 2019-04-19 墨里克国际有限责任公司 The catalyst of tubular reactor unloads
WO2020205224A1 (en) * 2019-03-29 2020-10-08 Tubemaster, Inc. Air lance for removing pellets from tubes
CN113316483A (en) * 2019-01-25 2021-08-27 株式会社日本触媒 Nozzle, solid matter extraction device, solid matter extraction system, and solid matter extraction method
JP2022018361A (en) * 2020-07-15 2022-01-27 株式会社日本触媒 nozzle
DE102022101194B4 (en) 2022-01-19 2024-11-28 SPM - Schütte Precision Machines GmbH Suction nozzle for suctioning bulk material from a reactor tube of an industrial reactor
EP4373607A4 (en) * 2021-07-20 2025-06-04 Tubemaster, Inc. Air lance for removing pellets from tubes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173122A (en) * 1985-03-06 1986-10-08 Buchen Gmbh Richard A method of, and apparatus for, emptying pipes
WO1993000158A1 (en) * 1991-06-20 1993-01-07 Catalyst Technology, Inc. Air lance reel for catalyst unloading of tubular reactors
US5222533A (en) * 1990-10-10 1993-06-29 Basf Corporation Nozzle for use in a catalyst unloader

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173122A (en) * 1985-03-06 1986-10-08 Buchen Gmbh Richard A method of, and apparatus for, emptying pipes
US5222533A (en) * 1990-10-10 1993-06-29 Basf Corporation Nozzle for use in a catalyst unloader
WO1993000158A1 (en) * 1991-06-20 1993-01-07 Catalyst Technology, Inc. Air lance reel for catalyst unloading of tubular reactors

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1226865A3 (en) * 2001-01-25 2004-01-21 Nippon Shokubai Co., Ltd. Process for extracting solid material from shell-and-tube reactor
EP1525178B2 (en) † 2002-07-18 2013-09-25 Basf Se Method for the heterogeneously-catalysed gas phase partial oxidation of at least one organic compound
KR101436662B1 (en) 2006-12-18 2014-09-01 투베마스터 인코포레이티드 Vacuum attachment and method
US7878225B2 (en) * 2006-12-18 2011-02-01 Tubemaster, Inc. Vacuum attachment and method
EP1967260A3 (en) * 2007-03-01 2008-09-24 Rohm and Haas Company Apparatus and method for dislodging and extracting solid materials from tubes
US20150274629A1 (en) * 2007-06-01 2015-10-01 Basf Se Process for recharging the reaction tubes of a tube bundle reactor with a new fixed catalyst bed
JP2010529005A (en) * 2007-06-01 2010-08-26 ビーエーエスエフ ソシエタス・ヨーロピア Reloading the reaction tube of a tube bundle reactor with a new fixed catalyst bed
US9126171B2 (en) 2007-06-01 2015-09-08 Basf Se Process for recharging the reaction tubes of a tube bundle reactor with a new fixed catalyst bed
WO2008145739A1 (en) * 2007-06-01 2008-12-04 Basf Se Method of recharging the reaction tube of a tube-bundle reactor with a new catalyst fixed bed
US9422218B2 (en) 2007-06-01 2016-08-23 Basf Se Process for recharging the reaction tubes of a tube bundle reactor with a new fixed catalyst bed
WO2011051102A1 (en) 2009-10-26 2011-05-05 Exxonmobil Chemical Patents Inc. Improved phthalic anhydride process
EP2705900A1 (en) * 2012-09-10 2014-03-12 Petroval Process and device for unloading particulate material from a vessel
JP2014057953A (en) * 2012-09-10 2014-04-03 Petroval Method and apparatus for retrieving particulate substance from container
US9446362B2 (en) 2012-09-10 2016-09-20 Petroval Process and device for unloading particulate material from a vessel
JP2014055274A (en) * 2012-09-14 2014-03-27 System Kikou Co Ltd Gas injection device for taking out catalyst and method for taking out catalyst
CN109661267B (en) * 2016-07-08 2022-02-25 墨里克国际有限责任公司 Catalyst unloading for tubular reactors
CN109661267A (en) * 2016-07-08 2019-04-19 墨里克国际有限责任公司 The catalyst of tubular reactor unloads
CN113316483A (en) * 2019-01-25 2021-08-27 株式会社日本触媒 Nozzle, solid matter extraction device, solid matter extraction system, and solid matter extraction method
JPWO2020153127A1 (en) * 2019-01-25 2021-11-11 株式会社日本触媒 Nozzle, solid matter extraction device, solid matter extraction system, and solid matter extraction method
EP3915674A4 (en) * 2019-01-25 2022-01-26 Nippon Shokubai Co., Ltd. Nozzle, device for extracting solid matter, system for extracting solid matter, and method for extracting solid matter
US12102995B2 (en) 2019-01-25 2024-10-01 Nippon Shokubai Co., Ltd. Nozzle, solid matter unloading device, solid matter unloading system, and solid matter unloading method
WO2020205224A1 (en) * 2019-03-29 2020-10-08 Tubemaster, Inc. Air lance for removing pellets from tubes
US11406955B2 (en) 2019-03-29 2022-08-09 Tubemaster, Inc. Air lance for removing pellets from a tube
JP2022018361A (en) * 2020-07-15 2022-01-27 株式会社日本触媒 nozzle
EP4373607A4 (en) * 2021-07-20 2025-06-04 Tubemaster, Inc. Air lance for removing pellets from tubes
DE102022101194B4 (en) 2022-01-19 2024-11-28 SPM - Schütte Precision Machines GmbH Suction nozzle for suctioning bulk material from a reactor tube of an industrial reactor

Also Published As

Publication number Publication date
AU4011297A (en) 1998-02-09
BE1010433A3 (en) 1998-08-04

Similar Documents

Publication Publication Date Title
WO1998002239A1 (en) Method and device for emptying a tube reactor
US5228484A (en) Air lance reel for catalyst unloading of tubular reactors
EP0132942B1 (en) Pipe cleaning or treating plant
US3916960A (en) Catalyst unloader apparatus and method
CN110624911B (en) Inside clean system of long gas cylinder of both ends throat
KR20000017385A (en) Method for cleaning heat exchange pipe and collecting device for collecting precipitate from heat exchange pipe
CN210585393U (en) Supplementary ash discharging device in circle formula electrostatic precipitator ash storehouse
CN220194344U (en) Inert gas recovery and purification system
CN212998927U (en) Cut off jetting air supply formula dust remover
JPH10309972A (en) Cleaning method of powder tank room of powder transport tank truck and cleaning plant used therefor
JP3457778B2 (en) Suction type foreign matter removal device
CN104014563B (en) Long lines inwall cleans positive and negative explosion treatment technique
HU216625B (en) Equipment and procedure for cleaning the exterior of tanks
CN211799557U (en) Movable dust-removing air extractor
CN208429618U (en) Two-stage separating and filtering and pulse backblowing cloth bag clean bulk cargo recovery operation station
JP2002011341A (en) In-pipe cleaning device
JPH01262915A (en) Method for precoating filter cloth and dust collecting apparatus
CN220090806U (en) Dust collecting equipment convenient to dock
US20240050997A1 (en) Rail car cleaning system
CN220530990U (en) Pulse filter bag dust collector
EP0823584A1 (en) Gas filling method and facility
CN219701426U (en) Dust collection bucket purging device of dust collector of dryer
JP4518556B2 (en) Exhaust water cleaning equipment
CN218902964U (en) Chemical material pipeline sweeps device
CN210966205U (en) Easy-to-clean storage pipeline structure

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN YU ZW AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH KE LS MW SD SZ UG ZW AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998505628

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA