GB822714A - Insulation for underground conduits and method of producing the same - Google Patents

Insulation for underground conduits and method of producing the same

Info

Publication number
GB822714A
GB822714A GB3747755A GB3747755A GB822714A GB 822714 A GB822714 A GB 822714A GB 3747755 A GB3747755 A GB 3747755A GB 3747755 A GB3747755 A GB 3747755A GB 822714 A GB822714 A GB 822714A
Authority
GB
United Kingdom
Prior art keywords
hydrocarbon
zone
pipes
surrounding
mixture
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
Application number
GB3747755A
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.)
ALEXANDER CAMPBELL KIDD
Original Assignee
ALEXANDER CAMPBELL KIDD
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 ALEXANDER CAMPBELL KIDD filed Critical ALEXANDER CAMPBELL KIDD
Priority to GB3747755A priority Critical patent/GB822714A/en
Publication of GB822714A publication Critical patent/GB822714A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/15—Arrangements for the insulation of pipes or pipe systems for underground pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/12—Coatings characterised by the materials used by tar or bitumen

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Civil Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

Pipes are protected from corrosion and also insulated against heat loss by surrounding them with a mixture of a high-softening-point hydrocarbon and expanded perlite particles coated with a similar hydrocarbon. A hot fluid is passed through the pipe in order to fuse the adjacent portion of the protective material which thereafter normally remains in a plastic condition when the pipes are conveying hot fluids. Surrounding this zone is an intermediate sintered zone and an outer zone of loose hydrocarbon-perlite mixture unaffected by heat. The hydrocarbon may be a by-product from the refining of petroleum asphalt known as a solvent precipitated asphalt resin. The expanded perlite is prepared by quickly heating perlite ore, a material found in the No Agua mountains of Colorado, U.S.A., and containing silica, aluminium, water and small quantities of the oxides of sodium, potassium, calcium and magnesium, to approximately 2000 DEG F., when glass-like beads or pearls are formed.ALSO:Pipes are protected from corrosion and also insulated against heat loss by surrounding them with a mixture of a high-softening-point hydrocarbon and expanded perlite particles coated with a similar hydrocarbon. A hot fluid is passed through the pipe in order to fuse the adjacent portion of the protective material which thereafter normally remains in a plastic condition when the pipes are conveying hot fluids. Surrounding this zone is an intermediate sintered zone and an outer zone of loose hydrocarbonperlite mixture unaffected by heat. The hydrocarbon may be a by-product from the refining of petroleum asphalt. The expanded perlite is prepared by quickly heating perlite ore, a material found in the No Agua mountains of Colorado, U.S.A. and containing silica, aluminium, water and small quantities of the oxides of sodium, potassium, calcium and magnesium, to approximately 2,000 DEG F. when glass-like beads or pearls are formed.
GB3747755A 1955-12-30 1955-12-30 Insulation for underground conduits and method of producing the same Expired GB822714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3747755A GB822714A (en) 1955-12-30 1955-12-30 Insulation for underground conduits and method of producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3747755A GB822714A (en) 1955-12-30 1955-12-30 Insulation for underground conduits and method of producing the same

Publications (1)

Publication Number Publication Date
GB822714A true GB822714A (en) 1959-10-28

Family

ID=10396767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3747755A Expired GB822714A (en) 1955-12-30 1955-12-30 Insulation for underground conduits and method of producing the same

Country Status (1)

Country Link
GB (1) GB822714A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0784769A2 (en) * 1994-08-29 1997-07-23 SUMNER, Glen R. An offshore pipeline with waterproof thermal insulation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0784769A2 (en) * 1994-08-29 1997-07-23 SUMNER, Glen R. An offshore pipeline with waterproof thermal insulation
EP0784769A4 (en) * 1994-08-29 1997-12-03 Glen R Sumner An offshore pipeline with waterproof thermal insulation
US5871034A (en) * 1994-08-29 1999-02-16 Sumner; Glen R. Offshore pipeline with waterproof thermal insulation

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