Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/22—Organic compounds containing nitrogen
  • C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
  • C10L1/224—Amides; Imides carboxylic acid amides, imides
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
  • D21C11/00—Regeneration of pulp liquors or effluent waste waters
  • D21C11/12—Combustion of pulp liquors
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• This invention relates to the burning of petroleum fuel oils and high solids content black liquor and, more particularly, it constitutes an improvement over known processes involving the burning of the heavier grades of petroleum fuel oils such as those designated No. and No. 6 fuel oils and high solids content black liquor.
• black liquor is the spent cooking liquor from the digesters plus the filtrate from the Washing operation. It is concentrated first in a multiple effect evaporator, next in a cascade or cyclone evaporator (a direct heat transfer device), then further concentrated by adding thereto a salt cake makeup and collected dust from the flue gas and hoppers, and finally heated prior to firing in the furnace. Inorganic components (sodium salts) in the concentrated black liquor are recovered in this burning operation as molten ash or smelt for reuse in the cooking liquor. Since all of these operations are well known in the art, a discussion thereof will not be repeated here.
• Suitable N,N-dirnethylamides of straight chain carboxylic acids are those prepared from carboxylic acids containing 18 carbon atoms. The acids are further characterized by having at least one carbon to carbon double bond. Specific acids classified within this category include: oleic, linoleic, linolenic, ricinoleic, and mixtures thereof.
• the N,N-dimethylamides of the foregoing acids are identified as N,N-dirnethyloleamide, N,N-dimethyllinoleamide, N,N-dimethyllinolenamide, and N,N-dimethylncinoleamide, respectively.
• these amides may be added to the cyclone, to the venturi scrubber, or preferably to the salt cake mixer.
• suitable quantities vary from about 10 to about 500 parts per million parts of black liquor or fuel oil.
• the amount used varies from about to 100 parts per million parts of black liquor or fuel oil.
• EXAMPLE 1 In this example the effectiveness of dimethylamide as an aid in processes involving the burning of high solids black liquor was determined by comparing the results of a series of runs in the presence of dimethylamide to a similar series of runs in the absence of that compound.
• Example 2 Relative viscosity, Decrease in parts per million ccntipoises viscosity, percent EXAMPLE 2
• the experimental procedures summarized in Example 1 were repeated in which the N,N-dimethylamides of the mixed acids found in castor, corn, cottonseed, linseed, olive, peanut, and soybean oils were used instead of the N,N-dimethylamides of tall oil fatty acids.
• the results were similar to those obtained in Example 1.
• a process of burning a viscous liquid fuel selected from the group consisting of petroleum fuel oil and black liquor comprising:
• straight chain carboxylic acid is a mixture of straight chain carboxylic acids containing 18 carbon atoms and at least one carbon to carbon double bond.
• N,N-dimethylamide is N,N-dimethyllinoleamide.
• N,N-dimethy1 amide is N,N-dimethyllinolenamide.
• N,N-dimethy1- amide is N,N-dimethylricinoleamide.

Landscapes

• Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Paper (AREA)

Priority Applications (12)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22824499

Family Applications (1)

Country Status (12)

Cited By (1)

Families Citing this family (1)

• 0
  • BE BE791548D patent/BE791548A/xx not_active IP Right Cessation
• 1972
  • 1972-01-25 US US00220674A patent/US3826632A/en not_active Expired - Lifetime
  • 1972-11-06 CA CA155,884A patent/CA970156A/en not_active Expired
  • 1972-11-07 NO NO4029/72A patent/NO135531C/no unknown
  • 1972-11-07 AU AU48584/72A patent/AU462105B2/en not_active Expired
  • 1972-11-10 ZA ZA727944A patent/ZA727944B/xx unknown
  • 1972-11-10 DE DE2255214A patent/DE2255214A1/de not_active Ceased
  • 1972-11-14 FI FI3189/72A patent/FI54951C/fi active
  • 1972-12-06 FR FR7243435A patent/FR2169034B1/fr not_active Expired
• 1973
  • 1973-01-09 BR BR73165A patent/BR7300165D0/pt unknown
  • 1973-01-16 JP JP665773A patent/JPS5418282B2/ja not_active Expired
  • 1973-01-24 SE SE7300985A patent/SE391751B/xx unknown

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