WO2008080202A1 - Evaporative cooling system of sinter - Google Patents

Evaporative cooling system of sinter Download PDF

Info

Publication number
WO2008080202A1
WO2008080202A1 PCT/BR2007/000082 BR2007000082W WO2008080202A1 WO 2008080202 A1 WO2008080202 A1 WO 2008080202A1 BR 2007000082 W BR2007000082 W BR 2007000082W WO 2008080202 A1 WO2008080202 A1 WO 2008080202A1
Authority
WO
WIPO (PCT)
Prior art keywords
sinter
cooling system
evaporative cooling
cooler
air
Prior art date
Application number
PCT/BR2007/000082
Other languages
French (fr)
Inventor
Martins Pinto Junior Salustiano
Original Assignee
Companhia Siderúrgica De Tubarão
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 Companhia Siderúrgica De Tubarão filed Critical Companhia Siderúrgica De Tubarão
Publication of WO2008080202A1 publication Critical patent/WO2008080202A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction

Definitions

  • This invention refers to an evaporative cooling system of sinter to be installed inside the Sinter Cooler of sinter plants.
  • the sinter is the result of the agglomeration of the iron ore in pieces of 10 to 50mm to be fed as the metal load of the blast furnace for production of metallic iron, being that the sintering aims to reconstitute, from fine materials, big pieces of ores, appropriate to the load and operation of the blast furnace.
  • the Sinter Cooler of the Sinter Plant at present is done and consist a set of circular cars that using air blown by fans to cooler the sinter.
  • the size and production of any Sinter Plant is define accord with the Blast Furnace production to be supply, being that in case of expansion the Blast Furnace production it will be necessary increase the sinter production too.
  • the basic and logical alternative is the construction of another Sinter cooler, which in some situations is impracticable, so much technique as (economically..
  • the soliufion ihere proposed is Hae (development of an evaporative cooling system of sinter to increase the capacity of the Sinter Cooler of the sinter plant, modifying his thermal capacity to attend the future conditions of production, keep the original characteristics of the Sinter plant.
  • the increase of the heat capacity of the cooler will be reached by modifying the thermodynamic properties of the cooling fluid, by mixing water in the form of spray (aerosol or droplets) in the air presently used, added by means of spray nozzles.
  • the pulverization of the water will create droplets that will be dragged by the air flow blown by the fans and, in contact with the sinter, will undergo change in the phase removing its heat and thus lowering its temperature
  • the evaporative cooling system of sinter has as principal objectives: To increase the thermal capacity of the Sinter Cooler up to 1250t/h (42t/m2xdia) and to make possible maximal exit temperature the sinter between 130 0 C and 140 0 C. With the introduction of the system, it will be possible not only to maintain the original Sinter Cooler but improve quality the physical structure of the sinter, as also as maintaining the temperatures of exit of the sinter inside the capacity of the conveyor belt.
  • the evaporative cooling system of sinter will be described in accordance with the attached figures where:
  • the figure 01 presents detailed drawings of the process.
  • the figure 02 presents internal sight of a fan of sinter with the nozzle of spray installed.
  • the evaporative cooling system of sinter consists in modifying the thermodynamics properties of the air inflated by the Fans (A) by means of increasing his thermal efficiency through the addition of droplets of water.
  • the water will be added by nozzle of spray (1) being that the pressure and flow of the Fans are maintained.
  • the evaporative cooling system of sinter is composed by a set of nozzle of spray (1) installed inside the tunnel of air of the Sinter Cooler (B).
  • the flow of water and its distribution are controlled in function of the desired production aiming to maintain the temperature of the exit of the sinter between 130 and 140° C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Evaporative cooling system of sinter, is a system which aims to increase the capacity of the cooling of a sinter plant, by modifying his thermal capacity to attend the fixture conditions of production without altering the industrial plant, as a result of modifications of the thermodynamics properties of the air inflated by the ventilators (A) by increasing his thermal efficiency through the addition of droplets of water, as this water is added in the tunnel of air of the Sinter Cooler (B) through beaks of spray (1).

Description

Descriptive report on invention patent: "EVAPORATIVE COOLING SYSTEM OF SINTER".
This invention refers to an evaporative cooling system of sinter to be installed inside the Sinter Cooler of sinter plants. As well known by the specialists, the sinter is the result of the agglomeration of the iron ore in pieces of 10 to 50mm to be fed as the metal load of the blast furnace for production of metallic iron, being that the sintering aims to reconstitute, from fine materials, big pieces of ores, appropriate to the load and operation of the blast furnace.
The Sinter Cooler of the Sinter Plant at present is done and consist a set of circular cars that using air blown by fans to cooler the sinter. The size and production of any Sinter Plant is define accord with the Blast Furnace production to be supply, being that in case of expansion the Blast Furnace production it will be necessary increase the sinter production too.
If the production of sinter increases, the Sinter heat load will increase too and the heat capacity available in the Sinter Cooler will be above this, leading to high temperatures in the sinter and causing burnings in the conveyor belt. In this case the Sinter Cooler will be limiting the increase of the production of sinter plant The basic and logical alternative is the construction of another Sinter cooler, which in some situations is impracticable, so much technique as (economically.. The soliufion ihere proposed is Hae (development of an evaporative cooling system of sinter to increase the capacity of the Sinter Cooler of the sinter plant, modifying his thermal capacity to attend the future conditions of production, keep the original characteristics of the Sinter plant.
The increase of the heat capacity of the cooler will be reached by modifying the thermodynamic properties of the cooling fluid, by mixing water in the form of spray (aerosol or droplets) in the air presently used, added by means of spray nozzles. The pulverization of the water will create droplets that will be dragged by the air flow blown by the fans and, in contact with the sinter, will undergo change in the phase removing its heat and thus lowering its temperature
The evaporative cooling system of sinter has as principal objectives: To increase the thermal capacity of the Sinter Cooler up to 1250t/h (42t/m2xdia) and to make possible maximal exit temperature the sinter between 130 0C and 140 0C. With the introduction of the system, it will be possible not only to maintain the original Sinter Cooler but improve quality the physical structure of the sinter, as also as maintaining the temperatures of exit of the sinter inside the capacity of the conveyor belt. The evaporative cooling system of sinter will be described in accordance with the attached figures where: The figure 01 presents detailed drawings of the process. The figure 02 presents internal sight of a fan of sinter with the nozzle of spray installed. As can be observed in the figures, The evaporative cooling system of sinter consists in modifying the thermodynamics properties of the air inflated by the Fans (A) by means of increasing his thermal efficiency through the addition of droplets of water. The water will be added by nozzle of spray (1) being that the pressure and flow of the Fans are maintained.
The evaporative cooling system of sinter is composed by a set of nozzle of spray (1) installed inside the tunnel of air of the Sinter Cooler (B). The flow of water and its distribution are controlled in function of the desired production aiming to maintain the temperature of the exit of the sinter between 130 and 140° C.
With the introduction of the evaporative cooling system of sinter, it will be possible to increase the production of sinter without compromising the physical structure of the sinter plant and its transport equipments.

Claims

1- EVAPORATIVE COOLING SYSTEM OF SINTER characterized by increasing the capacity of the Sinter Cooler of sinter, modifying his thermal capacity to attend the future conditions of production without altering the industrial plant.
2- EVAPORATIVE COOLING SYSTEM OF SINTER in accordance with the claim 1 characterized by the modification of the thermodynamics properties of the air inflated by the ventilators (A) increasing his thermal efficiency through the addition of droplets of water.
3- EVAPORATIVE COOLING SYSTEM OF SINTER in accordance with the claim 1 characterized by set of beaks of spray (1) installed internally in the tunnel of air of the Sinter Cooler (B) that will add water in the tunnel of air of the Sinter Cooler (B) being that the pressure and flow of the ventilators are maintained.
PCT/BR2007/000082 2006-12-28 2007-04-04 Evaporative cooling system of sinter WO2008080202A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0605779 BRPI0605779A (en) 2006-12-28 2006-12-28 sinter evaporative cooling system
BRPI0605779-9 2006-12-28

Publications (1)

Publication Number Publication Date
WO2008080202A1 true WO2008080202A1 (en) 2008-07-10

Family

ID=39588081

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2007/000082 WO2008080202A1 (en) 2006-12-28 2007-04-04 Evaporative cooling system of sinter

Country Status (2)

Country Link
BR (1) BRPI0605779A (en)
WO (1) WO2008080202A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707280A (en) * 1969-12-20 1972-12-26 Head Wrightson & Co Ltd Apparatus for cooling hot material in bulk
DE2844227A1 (en) * 1978-10-11 1980-04-24 Metallgesellschaft Ag ROUND COOLER FOR HOT PIECE MATERIAL
KR20030054839A (en) * 2001-12-26 2003-07-02 주식회사 포스코 Apparatus for enlargement of sealing and cooling efficiency of sintered ore cooler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707280A (en) * 1969-12-20 1972-12-26 Head Wrightson & Co Ltd Apparatus for cooling hot material in bulk
DE2844227A1 (en) * 1978-10-11 1980-04-24 Metallgesellschaft Ag ROUND COOLER FOR HOT PIECE MATERIAL
KR20030054839A (en) * 2001-12-26 2003-07-02 주식회사 포스코 Apparatus for enlargement of sealing and cooling efficiency of sintered ore cooler

Also Published As

Publication number Publication date
BRPI0605779A (en) 2008-08-19

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