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Liquid blast furnace slag granulation and multi-drum waste heat recovery system

A waste heat recovery system and blast furnace slag technology, applied in the field of metallurgy energy conservation and environmental protection, can solve the problems of not realizing double benefits at the same time, and achieve the effect of alleviating the contradiction between the continuity of waste heat utilization, improving the utilization grade, and improving the grade

Active Publication Date: 2015-11-25
无锡市东方环境工程设计研究所有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally speaking, the double benefits of the two have not been realized at the same time technically, and the two have mostly become contradictory factors that restrict each other

Method used

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  • Liquid blast furnace slag granulation and multi-drum waste heat recovery system
  • Liquid blast furnace slag granulation and multi-drum waste heat recovery system

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] A liquid blast furnace slag granulation and multi-drum waste heat recovery system uses high-pressure gas to crush the blast furnace slag, and uses multi-stage series drums to cool down the slag particles in steps and recover waste heat.

[0023] The structure of this embodiment is as figure 1 As shown, it includes a three-stage series drum, an exhaust cotton collection system, and a waste heat recovery system, wherein the three-stage series drum includes a first-stage vaporization drum granulation bin 5, a second-stage vaporization drum storage bin 9, and a third-stage drum cooler 10; The discharge port of the vaporization drum granulation bin 5 communicates with the feed port of the secondary vaporization drum storage bin 9 through the feed pipe, and the discharge port of the secondary vaporization drum storage bin 9 communica...

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Abstract

The invention discloses a liquid state blast furnace slag granulation and multi-roller residual heat recovery system. The liquid state blast furnace slag granulation and multi-roller residual heat recovery system comprises a first level vaporized roller granulation bin, a second level vaporized roller storage bin, a third level roller cooler and a residual heat recovery system, wherein a material inlet of the first level vaporized roller granulation bin is provided with a liquid state slag flow groove and a granulation device; the first level vaporized roller granulation bin, the second level vaporized roller storage bin and the third level roller cooler are connected in series, and are all provided with vapor-water inlets and outlets; the residual heat recovery system comprises a water feeding pump, an oxygen removing device and a vapor bag which are communicated through water pipes. According to the invention, high-grade saturated steam can be produced by utilizing residual heat of a blast furnace slag in a gradient mode, and the waste slag utilization grade is improved by the rapid cooling of solid slags; the continuous running in the integral process is not affected by the resting period of a blast furnace.

Description

technical field [0001] The invention relates to the technical field of metallurgy energy saving and environmental protection, in particular to a processing system for high-temperature liquid slag. Background technique [0002] Blast furnace slag is a by-product of ironmaking. The discharge temperature of blast furnace slag is about 1400°C. The heat contained in each ton of blast furnace slag reaches 1.8GJ, which is equivalent to the heat contained in 64kg of standard coal. At the same time, the waste slag finally discharged from the blast furnace slag treatment process contains very useful active components. Although the active components are different due to different treatment processes, they can all be used as raw materials for road construction, cement and other industries. [0003] The traditional main method for treating blast furnace slag is the wet water quenching method. This method is simple in process and can recycle waste slag by-products, but it cannot use waste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B3/06C21B3/08F22B1/04
CPCY02W30/543Y02W30/50
Inventor 郑岩张鹏谈庆雷震东王红军徐长存张玉军
Owner 无锡市东方环境工程设计研究所有限公司
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