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System for cyclically charging limestone in regenerating ovens equipped with internal pressure equalizer and charging process using such system

A technology of feeding device and internal pressure, applied in the system field of regeneration furnace, can solve problems such as limiting combustion/preheating cycle time

Inactive Publication Date: 2010-06-16
CIMPROGETTI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, in known regenerators as described above, the combustion cycle time is limited by the temperature increase of the exhaust gases leaving the furnace
[0011] From the above it is further appreciated that fresh limestone can be fed to the vat only during the reverse phase when the furnace is depressurized and then returned to ambient temperature, which greatly limits the burn / preheat cycle time

Method used

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  • System for cyclically charging limestone in regenerating ovens equipped with internal pressure equalizer and charging process using such system
  • System for cyclically charging limestone in regenerating ovens equipped with internal pressure equalizer and charging process using such system
  • System for cyclically charging limestone in regenerating ovens equipped with internal pressure equalizer and charging process using such system

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Embodiment Construction

[0036] refer to figure 1 , it can be noted that the system 10 for circulating limestone according to the invention cooperates with a known regenerating oven 20, the mouths of the first and second vats of which (or discharge ports) are shown, and the first and second vats are denoted by reference numerals 21 and 23 respectively. The system 10 according to the invention is adapted to alternately feed the two vats 21, 23 with limestone according to cyclic operation, the system 10 according to the invention comprises means for storing and feeding limestone, said means for storing and feeding limestone Adapted to receive limestone supplied by the charging means and for storing and supplying limestone cyclically and alternately to the vats 21 , 23 sequentially by interposing the supply valves mentioned below. In particular, in the preferred embodiment shown, this storage and supply device comprises first and second intermediate tanks for storing and supplying limestone, said first ...

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Abstract

A system (10) is disclosed for cyclically charging limestone in a regenerating oven (20) comprising storing and supplying means adapted to receive limestone supplied from charging means, to store andsupply it alternately and cyclically to a first and a second vat (21; 23) of the oven (20) by interposing airtightly sealed supply valves, an internal pressure equalizing device of the storing means with a pressure of an environment in which the charging means operate or an internal pressure of the oven (20); a process is further disclosed for charging limestone in a regenerating oven (20) throughsuch system (10).

Description

technical field [0001] The invention relates to a system for cyclically feeding limestone into a regeneration furnace equipped with internal pressure equalization means, and to a method of charging using this system. Background technique [0002] As known, a parallel-flow regenerating oven for the production of lime from limestone consists of two vats interconnected to each other by connecting channels. [0003] Limestone is contained in each vat and descends along the preheating zone where regenerative heat exchange with the flue gases occurs in countercurrent, through the fuel injection nozzle and to the heating / calcination zone. From here the limestone reaches the lime cooling zone. [0004] Furnace operation provides 8 to 12 minute long firing cycles for alternating firings in each vat. [0005] In the first step of the combustion cycle, fuel enters the combustion cylinder through the nozzle and burns in the injected combustion air. In the first vat, the free heat is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B1/00F27B1/20F27D3/00B65G53/46C04B2/12C21B7/20
CPCF27D3/0033F27B1/20F27B1/005F27D3/0032C21B7/20C04B2/10B65G53/46F27B1/00F27D3/00
Inventor 奥利维耶罗·科拉里尼欧金·达恩·克里斯泰亚
Owner CIMPROGETTI