FR2378237A1 - Boiler cleaning process using ammonia and water vapours - and a final water rinse, giving overall a rapid cleaning operation - Google Patents

Boiler cleaning process using ammonia and water vapours - and a final water rinse, giving overall a rapid cleaning operation

Info

Publication number
FR2378237A1
FR2378237A1 FR7801930A FR7801930A FR2378237A1 FR 2378237 A1 FR2378237 A1 FR 2378237A1 FR 7801930 A FR7801930 A FR 7801930A FR 7801930 A FR7801930 A FR 7801930A FR 2378237 A1 FR2378237 A1 FR 2378237A1
Authority
FR
France
Prior art keywords
ammonia
boiler
vapour
water
water vapour
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.)
Granted
Application number
FR7801930A
Other languages
French (fr)
Other versions
FR2378237B1 (en
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.)
KRAMMER CHEMISCHE DAMPFKESSEL
Original Assignee
KRAMMER CHEMISCHE DAMPFKESSEL
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 KRAMMER CHEMISCHE DAMPFKESSEL filed Critical KRAMMER CHEMISCHE DAMPFKESSEL
Publication of FR2378237A1 publication Critical patent/FR2378237A1/en
Application granted granted Critical
Publication of FR2378237B1 publication Critical patent/FR2378237B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
  • Treating Waste Gases (AREA)

Abstract

Process for the cleaning of boilers or furnaces by the injection of ammonia vapour into the bottom of the boiler or furnace. Hot water vapour is sprayed in small quantities through nozzles placed in openings at the top of the boiler. When the water vapour begins to condense and to flow out the pH is measured and the flow of water vapour and ammonia is adjusted so that the pH does not fall below 7.4. During the course of the cleaning operation the flow of water vapour is steadily increased while that of the ammonia vapour is decreased. The cleaning operation is short compared to previously known methods, it being possible to clean 5000 m2 of boiler surface in less than 50 hrs. Relatively small amts. of ammonia are required. The assembly of the cleaning appts. in the boiler is much simpler than previously used arrangements. The ammonia is injected at a pressure of >=3 bars and pref. >=6 bars. The water vapour is preheated to 400-600 degrees C. The ammonia soln. used contains 25% ammonia. The duration of the vapour treatment is about 12 hrs. After the vapour treatment the boiler is sprayed strongly with water from the nozzles for about a day.
FR7801930A 1977-01-24 1978-01-24 Boiler cleaning process using ammonia and water vapours - and a final water rinse, giving overall a rapid cleaning operation Granted FR2378237A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2702716A DE2702716C2 (en) 1977-01-24 1977-01-24 Process and device for cleaning boilers or ovens on the smoke side

Publications (2)

Publication Number Publication Date
FR2378237A1 true FR2378237A1 (en) 1978-08-18
FR2378237B1 FR2378237B1 (en) 1983-04-15

Family

ID=5999371

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7801930A Granted FR2378237A1 (en) 1977-01-24 1978-01-24 Boiler cleaning process using ammonia and water vapours - and a final water rinse, giving overall a rapid cleaning operation

Country Status (4)

Country Link
BE (1) BE863242A (en)
DE (1) DE2702716C2 (en)
FR (1) FR2378237A1 (en)
NL (1) NL7800617A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005517A1 (en) * 1980-02-14 1981-08-20 Josef Krammer Chem. Dampfkessel-Reinigung, 4040 Neuss METHOD FOR CLEANING BOILERS OR OVENS
SE437032B (en) * 1981-05-20 1985-02-04 Dalf International Ab PROCEDURE AND DEVICE FOR DISPOSAL AND REMOVAL OF FIXED COATINGS ON THE SURFACE OF A HEAT OR STEAM PAN

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757314C (en) * 1937-06-17 1951-12-20 Siegfried Hutter Process for cleaning the heating surfaces of steam boilers, preheaters, etc. like
DE941147C (en) * 1951-05-17 1956-04-05 Elsa Huber Process for cleaning heating surfaces on the flue gas side
DE946654C (en) * 1950-04-18 1956-08-02 Wilhelm Baumann Process for cleaning the heating surfaces of steam boilers which are coated with hot gases
DE1104107B (en) * 1957-03-09 1961-04-06 Unternehmen Fuer Dampfkesselpf Device for the metered addition of ammonia to flue gases
US3056700A (en) * 1959-10-28 1962-10-02 Osterlin Hilding Method of removing, with the use of water, soot and like deposits which adhere more or less fixedly to the walls of boiler flues, and apparatus for practising the method
FR1496473A (en) * 1965-10-28 1967-09-29 Borg Holding Ag Process for removing copper-containing coatings from iron and steel surfaces

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757314C (en) * 1937-06-17 1951-12-20 Siegfried Hutter Process for cleaning the heating surfaces of steam boilers, preheaters, etc. like
DE946654C (en) * 1950-04-18 1956-08-02 Wilhelm Baumann Process for cleaning the heating surfaces of steam boilers which are coated with hot gases
DE941147C (en) * 1951-05-17 1956-04-05 Elsa Huber Process for cleaning heating surfaces on the flue gas side
DE1104107B (en) * 1957-03-09 1961-04-06 Unternehmen Fuer Dampfkesselpf Device for the metered addition of ammonia to flue gases
US3056700A (en) * 1959-10-28 1962-10-02 Osterlin Hilding Method of removing, with the use of water, soot and like deposits which adhere more or less fixedly to the walls of boiler flues, and apparatus for practising the method
FR1496473A (en) * 1965-10-28 1967-09-29 Borg Holding Ag Process for removing copper-containing coatings from iron and steel surfaces

Also Published As

Publication number Publication date
NL7800617A (en) 1978-07-26
DE2702716C2 (en) 1979-06-28
BE863242A (en) 1978-05-16
FR2378237B1 (en) 1983-04-15
DE2702716B1 (en) 1978-10-26

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Legal Events

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ST Notification of lapse