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Argon purification
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Hydrogen production by coal gasification
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Ionic liquid desulfurizer
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Methane extraction technology – coalbed methane
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VOC tail gas disposal
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MPS decarbonization technology
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Vinyl chloride recycling technology
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absorbent
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CO removal by pressure swing adsorption
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Wet CO2 removal technology
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Methane extraction technology - biogas
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Flue gas CO2 recovery technology
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Battery material precursor production technology
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Ethylene tail gas recovery
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Special acid regeneration equipment
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Hydrogen production by conversion of light hydrocarbons with steam
Waste acid regeneration
Our company provides waste acid regeneration technology and acts as a general contractor for the supply of complete plants, as well as related services for maintenance, technical reconstruction, sale of spare parts, etc.
Description
marker
use:
Waste acid regeneration
Description of technology
Our company provides waste acid regeneration technology and acts as a general contractor for the supply of complete plants, as well as related services for maintenance, technical reconstruction, sale of spare parts, etc. This technology and equipment are mainly used in the following:
1、Recovery of waste hydrochloric acid from pickling cold-rolled sheet/silicon steel sheet in metallurgical industry;
2、Regeneration of spent hydrochloric acid during rope pickling;
3、Regeneration of waste hydrochloric acid from steel pipe etching;
4、Regeneration of hydrochloric acid filtrate in titanium dioxide chlorination industry;
5、Production of cobalt oxide powder from cobalt chloride;
6、Production of oxides of various metals from chlorides (regeneration of hydrochloric acid of chlorides of various metals)
Technological process and principle of acid regeneration technology
Basic reaction equations
4FeCl2+4H2O+O2→2Fe2O3+8HCl↑
2FeCl3+3H2O →Fe2O3+6HCl ↑
The spray roasting method takes advantage of the hydrolysis properties of FeCl2 at high temperature, sufficient water vapor and air, in a kiln, FeCl2 is directly converted into HCl and Fe2O3, where the HCl gas generated by the reaction and evaporated from the acid is absorbed by water, and the resulting regenerated hydrochloric acid with a mass fraction of about 18%. Fe2O3 flows to the bottom of the reaction furnace and through a pipeline into the iron powder storage tank. This method can recycle resources and also solve the environmental problems of acid waste and is a treatment technology promoted by the government. In spray calcination, the reaction temperature is high, the recovery rate of hydrochloric acid is more than 99.5%, and the mass fraction of hydrochloric acid disposal is about 18%, without secondary pollution; At the same time, the produced by-products can be processed as the main raw material for magnetic materials and can bring significant economic benefits. But this method needs large investment, large area and high operating cost, and it consumes large amounts of cooling water, electricity and fuel (natural gas, coke oven gas, mixed gas and so on). In the current acid cleaning process, steel mills mainly use hydrochloric acid to pickle the steel plate, the mass concentration of the acid cleaning solution can reach 110-130g/L, the mass concentration of free acid is large 30-60g/L, the amount of spent acid is large, the concentration of Fe2+, Fe3+ and Cl-ion is high, and the temperature of the spent acid is high.
Flow diagram
Typical Results
| initial year month | year and month of termination | Name of customer and project | Main use cases or purpose | work status | Notes |
| 2023.3 | 2023.12 | 10000L/h production line (4 sets) | production | Construction | whitening |
| 2023.3 | 2023.12 | 8000L/h production line (2 sets) | production | Construction | whitening |
| 2023.3 | 2023.12 | 5000L/h production line (6 sets) | production | Construction | whitening |
| 2023.2 | 2023.12 | Generation line 3500L/h (2 sets) | production | Construction | whitening |
| 2022.12 | 2023.6 | 300L/h production line (2 sets) | production | Construction | whitening |
| 2022.11 | 2023.5 | 300L/h production line (1 set) | production | Construction | whitening |
| 2022.3 | 2022.8 | Reconstruction of Panxi 2 * 10000 acid regeneration unit | Cold rolled steel pickling production line at steel foundry | Okay | electrofilter |
| 2022.2 | 2023.2 | 6000L/h acid regeneration unit in Vietnam | Cold rolled steel pickling production line at steel foundry | Construction | whitening |
| 2021.9 | 2022.3 | 300L/h production line (2 sets) | production | Okay | whitening |
| 2021.6 | 2022.4 | Yinshan Cold Rolling 1000L/H Acid Regeneration Unit | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2021.5 | 2022.3 | Hebei Guangfeng 6000L/h acid regeneration unit | Cold rolled steel pickling production line at steel foundry | Construction | whitening |
| 2021.5 | 2022.3 | 2 sets of 3500L/h production line | production | Okay | whitening |
| 2021.1 | 2021.12 | Jurong Zhongsheng 3000 l/h acid recovery unit | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2020.1 | 2021.12 | Acid regeneration plant Baosteel Huangshi 3500 l/h | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2020.8 | 2020.11 | Reconstruction of a pre-concentrator for acid regeneration 7500 l/h for three silicon steel WISCO | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2020.7 | 2020.11 | Panzhihua Iron and Steel 1# 4500L/h acid regeneration and bleaching transformation | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2020.3 | 2021.3 | Shandong Weifang Special Steel 3000L/H Acid Regeneration Unit | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2019.9 | 2019.12 | Supply of exhaust gas fan for acid regeneration 7500 l/h in Xinjiang | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2019.8 | 2019.11 | Acid regeneration and bleaching Panzhihua Iron and Steel 2# | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2019.8 | 2019.12 | Jiangsu Claude acid regeneration | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2019.5 | 2020.5 | Sichuan Qingyan 3000 l/h acid regeneration | Cold rolled steel pickling production line at steel foundry | whitening | |
| 2019.5 | 2019.1 | Reconstruction of 2#4500L/H Acid Regeneration Furnace in Panzhihua Iron and Steel Co., Ltd. | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2018.11 | 2019.1 | Guangdong Zhongsheng 2500 l/h acid regeneration | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2018.7 | 2019.6 | 1500 l/h production line for specific unit | test line | Okay | whitening |
| 2018.5 | 2018.1 | Pancheng Steel Acid Regeneration 4500L/H (Kiln etc.) | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2018.5 | 2018.1 | Reconstruction of flue gas etching in Huangshi Shanli | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2018.5 | 2018.1 | Acid regeneration Huangshi Shanli 6000 l/h | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2018.4 | 2018.7 | Reconstruction of environmental protection flue gas etching | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2018.3 | 2018.5 | Chengdu Fangxin acid regeneration technology 1500 l/h | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2018.3 | 2018.11 | Pengzhou Jinghua 2000 l/h acid regeneration | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2018.1 | 2018.11 | Pengzhou Weida 3000 l/h acid regeneration | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2017.07 | 2017.12 | Jiangsu Claude acid regeneration | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2017.04 | 2017.07 | Waste hydrochloric acid regeneration plant Baosteel Huangshi 2900 l/h (modification) | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2017.02 | 2018.6 | 7500L/H Acid Regeneration Plant at Xinjiang Bayi Iron and Steel Company Cold Rolled Sheet Plant (Reconstruction) | Cold rolled steel pickling production line at steel foundry | Okay | whitening |
| 2016.05 | 2016.1 | 4500L/h waste hydrochloric acid regeneration plant at Panzhihua Iron and Steel Cold Rolling Plant (reconstruction) | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2016.2 | 2016.1 | Experimental acid regeneration device Shanghai Hengtong 50 l/h | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2014.01 | 2015.08 | Chengdu Fangxin waste hydrochloric acid regeneration plant 1500 l/h | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2013.5 | 2015.7 | Waste hydrochloric acid regeneration plant 2 × 10000 l/h Panzhihua Iron and Steel Xichang | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2007.11 | 2009.7 | Baosteel Huangshi 2900 l/h waste hydrochloric acid regeneration plant | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2007.9 | 2010.1 | WISCO No. 3 cold rolling 7500 l/h waste hydrochloric acid and desiliconization plant | Cold rolled steel pickling production line at steel foundry | Okay | desiliconization |
| 2006.4 | 2007.11 | Waste acid regeneration plant 7500 l/h Benxi Iron and Steel Company | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2005.9 | 2006.7 | 3000L/h Acid Regeneration Plant Laiwu Iron and Steel Group Corporation | Cold rolled steel pickling production line at steel foundry | Okay | |
| 2005.6 | 2006.11 | 3# 4500L/H Acid Regeneration Plant in Panzhihua Iron and Steel Cold Rolling Plant | Production line of cold rolled sheet pickling at steel foundry | Okay | |
| 2005.6 | 2007.8 | 7500L/H Acid Regeneration Plant in Xinjiang Bayi Iron and Steel Co.,Ltd Cold Rolled Sheet Plant | Production line of cold rolled sheet pickling at steel foundry | Okay | |
| 2005.3 | 2005.12 | Tangshan Jianlong Jianzhou Iron and Steel Co., Ltd. Acid regeneration unit 4300L/H | Production line of cold rolled sheet pickling at steel foundry | Okay | |
| 2002.5 | 2003.8 | 2# 4500L/h Acid Regeneration Plant in Panzhihua Iron and Steel Cold Rolling Plant | Production line of cold rolled sheet pickling at steel foundry | Okay | |
| 1996.4 | 1998.4 | Wuhan Iron and Steel Corporation 2900L/H acid regeneration unit | Production line of cold rolled sheet pickling at steel foundry | Okay | First localization kit |
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