一种冷轧酸再生与蒸发汽提组合系统

By using a combined system of cold-rolled acid regeneration and evaporation stripping, the countercurrent contact of high-temperature flue gas and steam, along with uniform stirring and filtration devices, solves the problems of low evaporation efficiency and easy equipment damage during the cold-rolled acid washing process, achieving high efficiency, reduced energy consumption, and extended equipment life.

CN119661004BActive Publication Date: 2026-07-17BAZHOU SANGANG TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BAZHOU SANGANG TECH CO LTD
Filing Date
2024-12-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing cold rolling pickling process, the evaporation stripping efficiency is low, the energy consumption is high, and the stripping tower is prone to uneven heating, which can lead to equipment damage and a short service life.

Method used

The system employs a combination of calcining furnace dust removal equipment, pre-concentration equipment, evaporation equipment, stripping equipment, absorption equipment, and water washing and alkaline washing equipment. Combined with a uniform stripping device, acid impurity filtration device, and cleaning device, it achieves efficient evaporation and stripping of acid through countercurrent contact of high-temperature flue gas and steam, preventing uneven heating and extending equipment life.

Benefits of technology

It significantly reduces natural gas consumption, improves evaporation efficiency, extends equipment lifespan, enhances acid purity and regeneration quality, and reduces the need for manual maintenance.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明涉及冷轧酸再生技术领域,提出了一种冷轧酸再生与蒸发汽提组合系统,包括焙烧炉除尘设备、预浓缩设备、蒸发设备、汽提设备、吸收设备和水洗涤碱洗设备。本发明利用酸再生装置预浓缩器后蒸汽含量达到50‑55%的高温烟气作为酸洗废液蒸发器的加热介质,将酸洗废液进行蒸发浓缩,实现了酸洗废液的蒸发浓缩,浓缩后溶液再一次被焙烧炉来的高温烟气浓缩后,之后的溶液在汽提塔中与蒸发后的二次蒸汽逆流接触后,回收其中游离的HCl,溶液基本只含有氯化亚铁等去焙烧炉进行焙烧。由于去焙烧炉溶液被提前蒸发和汽提,溶液体积较之原工艺降低20‑25%,天然气耗量得到了大幅降低,并且不引入其他能源介质。
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