EP1660247B1 - Method for cleaning a product gas pipe which contains inpurities and an apparatus which uses the method - Google Patents

Method for cleaning a product gas pipe which contains inpurities and an apparatus which uses the method Download PDF

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Publication number
EP1660247B1
EP1660247B1 EP04742100A EP04742100A EP1660247B1 EP 1660247 B1 EP1660247 B1 EP 1660247B1 EP 04742100 A EP04742100 A EP 04742100A EP 04742100 A EP04742100 A EP 04742100A EP 1660247 B1 EP1660247 B1 EP 1660247B1
Authority
EP
European Patent Office
Prior art keywords
pipe
impurities
cleaning
chains
product gas
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 - Lifetime
Application number
EP04742100A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1660247A1 (en
Inventor
Timo Saares
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1660247A1 publication Critical patent/EP1660247A1/en
Application granted granted Critical
Publication of EP1660247B1 publication Critical patent/EP1660247B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets

Definitions

  • the present invention relates to a method for cleaning a pipe carrying a product gas containing impurities, said pipe being substantially rectangular in cross-section.
  • the invention also relates to an apparatus implementing the method.
  • the invention thus relates to piping for a product gas containing different impurities.
  • Impurities are produced e.g. in connection with energy production in gasification power plants.
  • thermal power plants based on gasification it is common that the pipes used to conduct gases containing impurities get clogged with time. Therefore, the pipes have to be cleaned from time to time, which involves an interruption of actual energy production. This causes additional costs. Moreover, the cleaning is a cumbersome operation.
  • the object of the present invention is to create a method for use in this type of gas pipe system that is free of the above-described, drawbacks.
  • the method of the invention whereby solid and/or liquid impurities are detached from the walls of the pipe is characterized in that the impurities are returned into the apparatus, such as a gas generator, producing the product gas.
  • a further object of the invention is to create an apparatus for implementing the method.
  • the apparatus whereby a mechanical system for cleaning the pipe walls has been built inside the pipe is characterized in that the impurities detached during the cleaning are returned by the same system into the device, such as a gas generator, producing the product gas.
  • a preferred embodiment of the apparatus of the invention is characterized in that the apparatus comprises a pair of chain sprockets mounted beside the side walls of the pipe at each end of the pipe, at least one of said pairs of chain sprockets being arranged to be operated by a motor, said chain sprockets carrying endless chains running at either side wall of the pipe, to which chains are attached cleaning elements moving with the chains and oriented in the widthwise direction of the pipe, said elements having a width substantially equal to the width of the pipe.
  • a second preferred embodiment of the apparatus of the invention is characterized in that the cleaning elements are chain scrapers mounted between the chains at a distance from each other, which chain scrapers clean the pipe wall as the chains are moving and which carry the detached impurities back into the device producing the gas.
  • a further preferred embodiment of the apparatus of the invention is characterized in that some of the chain scrapers have been arranged to clean the upper and lower surfaces of the pipe and some to clean the lateral surfaces of the pipe.
  • Fig. 1 presents a sectional side view of a gas pipe provided with an apparatus according to the invention.
  • Fig. 2 presents a sectional top view of a gas pipe provided with an apparatus according to the invention.
  • Fig. 3 presents a cross-section of a gas pipe provided with an apparatus according to the invention.
  • reference number 1 indicates the gasification space of a device producing energy gases.
  • the product gas is conducted into a pipe 2, the first end of which is provided with a pair of idler sprockets 4 and the second end with a pair of driving sprockets 3.
  • the second end of the gas pipe is connected to a device 6 that utilizes the product gas.
  • the pipe is substantially rectangular in cross-section.
  • the chains are moved by means of the driving sprocket pair 3.
  • the driving sprocket pair 3 is driven by a drive machine 7, such as an electric motor. For power transmission from the drive machine, as drive shaft 11 is used.
  • Chain scrapers 8 mounted on the chains 5 are cleaning elements, especially chain scrapers 8, 10, in a transverse position relative to the longitudinal direction of the pipe 2. As the chain scrapers are moving, they detach impurities accumulated on the pipe walls and carry them back into the gasification space 1. Scrapers 8 are so mounted that they clean the upper and lower surfaces of the pipe, while scrapers 10 are so mounted that they clean the lateral surfaces of the pipe. While the scrapers detach impurities from the inner walls of the pipe as they are moving, they also carry the impurities back into the gasification space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Detergent Compositions (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP04742100A 2003-06-16 2004-06-10 Method for cleaning a product gas pipe which contains inpurities and an apparatus which uses the method Expired - Lifetime EP1660247B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20030900A FI118522B (fi) 2003-06-16 2003-06-16 Menetelmä epäpuhtauksia sisältävän tuotekaasuputken puhdistamiseksi sekä menetelmää soveltava laitteisto
PCT/FI2004/000357 WO2004110658A1 (en) 2003-06-16 2004-06-10 Method for cleaning a product gas pipe which contains inpurities and an apparatus which uses the method

Publications (2)

Publication Number Publication Date
EP1660247A1 EP1660247A1 (en) 2006-05-31
EP1660247B1 true EP1660247B1 (en) 2008-12-24

Family

ID=8566261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04742100A Expired - Lifetime EP1660247B1 (en) 2003-06-16 2004-06-10 Method for cleaning a product gas pipe which contains inpurities and an apparatus which uses the method

Country Status (5)

Country Link
EP (1) EP1660247B1 (fi)
AT (1) ATE418397T1 (fi)
DE (1) DE602004018655D1 (fi)
FI (1) FI118522B (fi)
WO (1) WO2004110658A1 (fi)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE628502C (de) * 1934-09-18 1936-04-06 Wilhelm Von Der Linde Jr Vorrichtung zum Reinigen von Ofenrohren
DE1094912B (de) * 1955-06-15 1960-12-15 William Herbert Smith Vorrichtung zur rauchgasseitigen Reinigung der Rauchrohre stehender Heizkessel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004278A (en) * 1959-12-02 1961-10-17 Stanley Bledsoe Corp Pipe cleaning apparatus
DE1409740B1 (de) * 1961-06-16 1969-09-04 Hammelmann Paul Maschf Feuerloeschfahrzeug mit Raupenkettenfahrwerk
US3562836A (en) * 1968-12-30 1971-02-16 Raymond M Bremner Reaming tool
US3604042A (en) * 1969-10-23 1971-09-14 Raymond M Bremner Pipe-cleaning tool
US3800358A (en) * 1972-05-08 1974-04-02 J Ryan Duct cleaning apparatus
US4792363A (en) * 1988-02-01 1988-12-20 Franklin Jr Smead P Vent cleaning system
US5244505A (en) * 1990-07-13 1993-09-14 Pipe Rehab International, Inc. Method for cleaning pipe
SE502348C2 (sv) * 1991-08-19 1995-10-09 Sven Eriksson Anordning för invändig rengöring av långsträckta kanaler
CA2354226A1 (en) * 2001-01-31 2002-07-31 Cal Holland Robotic apparatus and method for non-destructive maintenance of intersecting conduits

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE628502C (de) * 1934-09-18 1936-04-06 Wilhelm Von Der Linde Jr Vorrichtung zum Reinigen von Ofenrohren
DE1094912B (de) * 1955-06-15 1960-12-15 William Herbert Smith Vorrichtung zur rauchgasseitigen Reinigung der Rauchrohre stehender Heizkessel

Also Published As

Publication number Publication date
WO2004110658A1 (en) 2004-12-23
FI20030900A0 (fi) 2003-06-16
DE602004018655D1 (de) 2009-02-05
FI118522B (fi) 2007-12-14
EP1660247A1 (en) 2006-05-31
FI20030900A (fi) 2004-12-17
ATE418397T1 (de) 2009-01-15

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