Nickel-iron alloy dry granulation and methane steam reforming waste heat recovery device and method

Abstract

The invention provides a nickel-iron alloy dry granulation and methane steam reforming waste heat recovery device and method. According to the nickel-iron alloy dry granulation and methane steam reforming waste heat recovery device, the structure is simple; production, implementation, using and operation are all easy and convenient; the nickel-iron alloy dry granulation and methane steam reforming waste heat recovery method is combined; the nickel-iron alloy refining granulation effect is better ensured by adopting the dry granulation method; meanwhile, nickel-iron alloy waste heat can further be converted into resources required by methane steam reforming reaction in a multistage recovery mode that a physical method is combined with a chemical method; increasing of the nickel-iron alloy waste heat resource recovery utilization rate can be facilitated, so that the problems that the stainless steel smelting process requirements are difficult to meet by molten nickel-iron alloy granulation processing, and the waste heat resource recovery utilization rate of molten nickel-iron alloy granulation processing is low in the prior art are effectively solved; and the nickel-iron alloy dry granulation and methane steam reforming waste heat recovery device and method have very good industrial application value and can be applied and popularized in domestic metallurgical enterprises.

Description

technical field [0001] The invention relates to the fields of metallurgical engineering, environmental protection and energy saving, mainly relates to energy saving and emission reduction in metallurgical processes, dry granulation of metallurgical slag, and in particular to a device and method for dry granulation of nickel-iron alloy and methane steam reforming waste heat recovery. Background technique [0002] In the production of stainless steel, ferronickel raw materials need to be added. The smaller the particles of ferronickel when entering the furnace, the shorter the smelting time of steelmaking. However, in order to ensure that the ferronickel particles can pass through the slag layer on the surface smoothly, the quality of the ferronickel should not be too small , so the particles of nickel-iron alloy should not be too small, usually the best particle size is 10~40mm. At present, in the ferronickel metallurgical process, whether it is the blast furnace method, the ...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies existing in the prior art, the object of the present invention is to provide a nickel-iron alloy dry granulation and methane steam reforming waste heat recovery device, which is used to realize granulation processing of liquid molten nickel-iron alloy, and also The waste heat of nickel-iron alloy can be multi-stage recovered and transformed into the resources required for the steam reforming reaction of methane, which can help improve the recovery and utilization rate of waste heat resources of nickel-iron alloy, and can be used to solve the granulation of molten nickel-iron alloy in the prior art Processing is difficult to meet the requirements of stainless steel smelting process, and the recovery and utilization rate of waste heat resources is low

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