Grading recycling and cascade utilization method of residual heat resources in sintering process and device thereof

Abstract

The invention relates to a method for effectively recycling and utilizing residual heat resources in a sintering process and a device thereof. The invention has the main contents that a fiery sinter ore is filled in a vertical and sealed tank body, air is led from the tank body so as to cool the sinter ore, sensible heat of the sinter ore is almost totally carried by the air and is exhausted fromthe top of the tank body at the same time; and hot air is led into a residual heat boiler to generate steam to synchronously generate power. Compared with the prior sintering residual heat recycling and utilization technology, the invention has higher residual heat recycling utilization ratio, effectively reduces the energy consumption of the sintering procedure with reasonable and effective method, simple apparatus and easy operation, and is relatively favorable for popularization and application in the technical field of residual heat resource recycling and utilization in a metallurgy process.

Description

Technical field: [0001] The invention belongs to the technical field of recovery and utilization of waste heat resources in metallurgical processes, and in particular relates to a method and device for efficiently recovering and utilizing low-temperature waste heat resources in a sintering process based on energy saving and emission reduction. Background technique: [0002] The waste heat resources in the sintering process (referred to as sintering waste heat, the same below) are mainly composed of two parts: one part is the sensible heat carried by the sintered ore at the tail of the sintering machine at a temperature of about 800 ° C ~ 950 ° C The heat accounts for about 70% of the total waste heat resources in the sintering process; the other part comes from the sensible heat of the sintering flue gas in the main exhaust pipe of the sintering machine, which accounts for about 30% of the total waste heat resources. The efficient recovery and utilization of sintering waste ...

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Problems solved by technology

[0006] Purpose of the invention: Aiming at the disadvantages of existing coolers such as air leakage and sinter sensible heat that can only be partially recovered, the present invention proposes a method and device for graded recovery and cascade utilization of waste heat resources in the sintering process. It overcomes the problem of low efficiency of cooling and recovery heat resources caused by the air leakage of the previous cooler, and also overcomes the problem that the previous cooler can only recover part of the heat source, and it can recycle all the sensible heat of sinter

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