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GB1006444A - Improvements in the cooling of clinkers obtained in cement kilns - Google Patents

Improvements in the cooling of clinkers obtained in cement kilns

Info

Publication number
GB1006444A
GB1006444A GB3476161A GB3476161A GB1006444A GB 1006444 A GB1006444 A GB 1006444A GB 3476161 A GB3476161 A GB 3476161A GB 3476161 A GB3476161 A GB 3476161A GB 1006444 A GB1006444 A GB 1006444A
Authority
GB
United Kingdom
Prior art keywords
pressure
air
chamber
compartments
controlled
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
GB3476161A
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.)
LafargeHolcim Ciments SA
Original Assignee
Lafarge Ciments SA
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 Lafarge Ciments SA filed Critical Lafarge Ciments SA
Publication of GB1006444A publication Critical patent/GB1006444A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
    • F28C3/16—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material forming a bed, e.g. fluidised, on vibratory sieves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
    • F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates
    • F27D2015/0226—Support, fixation of the grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
    • F27D15/022—Cooling with means to convey the charge comprising a cooling grate grate plates
    • F27D2015/0233—Cooling with means to convey the charge comprising a cooling grate grate plates with gas, e.g. air, supply to the grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
    • F27D2015/0246—Combination of fixed and movable grates
    • F27D2015/0253—Gradin grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
    • F27D2019/0009—Monitoring the pressure in an enclosure or kiln zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

1,006,444. Cooling cement clinker. CIMENTS LAFARGE. Sept. 27, 1961 [July 25, 1961], No. 34761/61. Heading F4B. [Also in Division G3] Clinker from a cement kiln is cooled on a moving grate 1 which runs over air chambers 2, 3 and 3<SP>1</SP>, the cooling air being recirculated through a pipe 19 to the first chamber 2. The chamber 2 is sub-divided into compartments 4 and 5, chamber 5 being at least twice as large as chamber 4, and the pressure of air in each compartment being controlled by shutters 8 and 9 set so that for a constant thickness of clinker over compartments 4 and 5, the pressure in each is the same. The grate speed is controlled by a servomotor regulated by fluctuations from a reference signal of an output signal defined by the quantity: p + k[#p - (#p)m], where p is the long period average of the means of the air pressures in the said compartments, k is a constant, #p is the instantaneous pressure difference between said compartments, and (# p )m is an average taken over a limited time interval, of the pressure difference between the compartments The pressures are measured by pressure-sensing devices and passed on to an electronic signal-combining device having proportional, integral, and differential actions, which device transmits said output signal to the gate speed regulator. The chambers 3 and 3<SP>1</SP> are supplied with air from a separate source S, the flow being controlled by valves 14<SP>x</SP> via a control device 14 connected to a thermocouple 13 situated close above the clinker bed. A constant flow rate to the chamber 2 is ensured by a valve device 10 controlled by pressure variations measured at a diaphragm 15. The pressure under the hood H is controlled by fans 16 and valve devices 17. To prevent pressure variations in chamber 3 reacting upon the air pressure in compartment 5, a fan 12 is located in a casing 11 (Fig. 2) forming part of the air-seal between chambers 3 and 2, the air pressure in the casing being maintained higher than that in the adjacent chambers to cause a leak thereinto.
GB3476161A 1961-07-25 1961-09-27 Improvements in the cooling of clinkers obtained in cement kilns Expired GB1006444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR869020A FR1303085A (en) 1961-07-25 1961-07-25 Improvements in the cooling of clinkers in cement kilns

Publications (1)

Publication Number Publication Date
GB1006444A true GB1006444A (en) 1965-10-06

Family

ID=8760059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3476161A Expired GB1006444A (en) 1961-07-25 1961-09-27 Improvements in the cooling of clinkers obtained in cement kilns

Country Status (5)

Country Link
CH (1) CH379996A (en)
DE (1) DE1408990C3 (en)
DK (1) DK103876C (en)
FR (1) FR1303085A (en)
GB (1) GB1006444A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522399A1 (en) * 1982-03-01 1983-09-02 Frigoscandia Contracting Ab APPARATUS FOR PROCESSING PRODUCTS WITH A HOT OR COLD GAS STREAM, PARTICULARLY FOR FREEZING FLUIDIZED BED FOODS
WO2006005997A1 (en) * 2004-07-02 2006-01-19 Flsmidth A/S Method and cooler for cooling hot particulate material

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276755A (en) * 1964-07-20 1966-10-04 Fuller Co Kiln system and method
FR2102623A5 (en) * 1970-08-12 1972-04-07 Francais Ciments Screen cooler - for cement clinker with air totally recirculated
JPS5211322B2 (en) * 1972-08-28 1977-03-30
DE102004060207A1 (en) * 2004-12-14 2006-06-22 Polysius Ag Controlling cooler for piece-form material, using cooling gas passed upwards for material on grid, using comparison of stored and measured operating parameters to adjust air distributor flap position
DE112009001570T5 (en) * 2008-06-26 2011-05-05 Flsmidth A/S Method and cooling device for cooling a hot particulate material
CN114543553B (en) * 2022-03-24 2023-06-30 重庆科技学院 Intermittent circulating fluidized bed boiler bottom slag waste heat recovery coupling CO 2 Fixing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522399A1 (en) * 1982-03-01 1983-09-02 Frigoscandia Contracting Ab APPARATUS FOR PROCESSING PRODUCTS WITH A HOT OR COLD GAS STREAM, PARTICULARLY FOR FREEZING FLUIDIZED BED FOODS
WO2006005997A1 (en) * 2004-07-02 2006-01-19 Flsmidth A/S Method and cooler for cooling hot particulate material
AU2005261455B2 (en) * 2004-07-02 2010-03-04 Flsmidth Cement A/S Method and cooler for cooling hot particulate material
US8100690B2 (en) 2004-07-02 2012-01-24 Flsmidth A/S Method and cooler for cooling hot particulate material

Also Published As

Publication number Publication date
DE1408990A1 (en) 1968-10-10
DK103876C (en) 1966-02-28
CH379996A (en) 1964-07-15
DE1408990C3 (en) 1975-09-04
DE1408990B2 (en) 1969-10-09
FR1303085A (en) 1962-09-07

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