Processing system of heating by using waste heat of hot water for slag flushing in blast furnace

A blast furnace slag flushing and processing system technology, applied to hot water central heating systems, heating systems, household heating, etc., can solve problems such as unusable

Active Publication Date: 2010-03-03
CISDI ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the slag flushing hot water contains a large amount of waste heat, it cannot be used due to the large amount of slag and chloride ions and other highly corrosive substances in the water.

Method used

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  • Processing system of heating by using waste heat of hot water for slag flushing in blast furnace

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Embodiment Construction

[0023] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited thereto.

[0024] In this embodiment, there are two sets of slag flushing water circulation systems A and B, and the outlet main pipe 1 of the slag flushing water hot water lift pump 14 of each set of slag flushing water circulation system is respectively connected to the cooling tower inlet pipe 2 and the slag flushing water input pipeline 5. The slag flushing water input pipeline 5 enters the shared heating treatment system. The heating treatment system is composed of pipeline mixer 9, coarse filter equipment 10, fine filter equipment 11 and primary heat exchanger 12 in series; the heating return pipe 6 of the heating system is connected to the primary heat exchanger 12, and the heating water supply pipe 7-1 The secondary heat exchanger 13 is connected with the heating water supply pump unit 17; the heated hot water is sent into t...

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Abstract

The invention belongs to the technical field of recovery of waste heat in a circulating water system, relating to a processing system of heating by using waste heat of hot water for slag flushing in ablast furnace. A water inlet pipe of a cooling tower and a slag-flushing water input pipeline are respectively connected to a water outlet header pipe of a slag-flushing water hot water lift pump ofthe inventive slag-flushing water circulating system, and the slag-flushing water input pipeline enters a common heating processing system, which is characterized by that the heating processing systemcomprises a pipeline mixer, a coarse filtration equipment, a fine filtration equipment and a one-stage heat exchanger; that a water return pipe of a heating system is connected to the one-stage heatexchanger and a heating water supply pipe is connected with a heating water supply pump unit via a two-stage heat exchanger; and that the heated hot water is conveyed into the heating system by the heating water supply pipe. The inventive processing system achieves the purposes of energy conservation and consumption reduction, which is applied to heating by using the waste heat of hot water for slag flushing in the blast furnace in some regions with cold winter, and which is also applicable to a circulating system for other media that are heated necessarily due to the temperature reduction after used.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery of circulating water systems, and particularly relates to a treatment system for heating by using the waste heat of blast furnace slag flushing hot water. Other media need a heated circulation system when the temperature drops after use. Background technique [0002] At present, most large-scale blast furnaces in my country adopt the slag flushing process, and the hot water flow for slag flushing is large, generally at 2500m 3 About / h, the temperature is high, the average temperature is about 75°C, and the water contains a large amount of slag and chloride ions and other highly corrosive substances. The required temperature of the slag flushing water is 45°C, and the maximum is 60°C. In order to meet the requirements of the slag flushing water, the hot water for slag flushing needs to be cooled by a cooling tower before use. In iron and steel enterprises in cold winter areas, most o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06F24D3/02
CPCY02W30/50
Inventor 徐小刚邱利祥宫鲁
Owner CISDI ENG CO LTD
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