Xingmin science and technology: dual source acid removal air cooling tower into wet zinc refining leading cooling technology

XMT-300 Dual-source Acid Removal Air Cooling Tower Applied in Baiyin Xinda Metal Smelting Co., Ltd.

Zero-cost ventilation eliminates acid and innovation

——Double source acid-removing air cooling tower into wet method Zinc-dominant cooling technology

The XMT double source deacidification air cooling tower invented by Zhuzhou Xingmin Technology Co., Ltd. was verified by the production of key non-ferrous metallurgical enterprises such as Western Mining Co., Ltd. and Xiangyun Feilong Industrial Co., Ltd. This patented zero-cost ventilation and acid removal technology will be effective. Promote China's wet smelting zinc industry to the era of clean energy-saving production.

Zinc electrolysis is the main process of hydrometallurgical zinc refining. H2 and O2 precipitated during the zinc electrolysis process entrain a large amount of sulfuric acid mist to escape from the electrolysis cell and pollute the air in the workshop. When the concentration of sulfuric acid mist is the highest, it is 50 times higher than the allowable concentration, leading to electrolysis workers. Loss of teeth. In order to reduce the harm of acid etching to human body, China's occupational disease experts and metallurgists have made long-term research, but have not found effective prevention and control methods. Therefore, the hydrometallurgical plants generally adopt measures to replace the electrolysis workers to reduce the occupational hazards of tooth erosion. The ventilation of windows has become a routine means of transferring pollution in zinc electrolysis plants. According to expert calculations, an electrolysis plant with an annual output of 100,000 tons of zinc electrolysates emits more than 10,000 tons of sulfuric acid mist per year.

Foreign wet zinc smelting enterprises are under pressure from environmental protection, and commonly used closed ventilation and acid removal and mechanical stripping of zinc. The introduction of a set of 100,000 tons of zinc production capacity of closed ventilation and acid removal and mechanical stripping equipment, the price of 80 million yuan, and emission reduction is not energy-saving, most wet zinc smelting plants can not afford.

Xingmin Technology on March 20, 2007 developed a double-source suction and radial drip-dropping technology and immediately induced a strong awareness of energy conservation and emission reduction companies. Qinghai, Yunnan, Gansu, Ningxia and other non-ferrous metallurgical companies took the lead to order nine units. XMT dual source acid cooling tower trial. After more than one year of production and operation, it is proved that the XMT double-source acid-free air-cooled tower has a large cooling capacity, uses air cooling tower fans to achieve zero-cost ventilation in the zinc electrolysis workshop, and uses the air-cooled tower drip function to achieve zero-cost acid removal. After the promotion and application of this energy-saving and emission-reduction technology in the national wet zinc smelting enterprises, it will receive the environmental protection effect of reducing 400,000 tons of sulfuric acid mist per year, and completely end the history of sour mist-smuggling in the zinc electrolysis workshop.

Zero cost ventilation and acid removal is a green energy-saving and emission reduction technology. The zinc electrolyte produced in the zinc electrolysis process needs cooling due to the increase in liquid temperature. At present, air cooling towers are generally used to cool the zinc electrolyte. The airflow of the air cooling tower into the tower is fresh air. If the air contains acid, the fan of the air cooling tower will erode quickly, and the existing drip device cannot remove the large amount of acid mist entrained by the tower airflow. XMT dual source acid cooling air cooling tower adopts dual-source suction technology, uses two small fans with the same power as the existing air cooling tower fan, diverts fresh air and acid-containing air, uses fresh air to cool the fan to prevent fan corrosion, and adopts spray. The radial drip-dropping technology in the drip-and-drip zone operation changes the axial direction of the heat exchanged air flow out of the tower to the radial out of the tower, so that the flow direction of the flow of the tower flow deviates from the direction of the inertial flow of the droplets, thereby enhancing the drip function. , improve drop efficiency. This achieves the goal of zero-cost ventilation and deacidification with an air-cooled tower.

He was the inventor of zinc oxide ore wet smelting technology, national famous wet zinc smelting expert Shu Wei, author of “Indium Metallurgy”, Wang Shujun, chairman of Yunnan Honghe Zinc Industry Co., Ltd. with the first XMT double source acid-free air cooling tower, and Changsha Nonferrous Metals Co., Ltd. High-level experts from the Metallurgical Design and Research Institute, Beijing Non-ferrous Metallurgical Design and Research Institute unanimously agreed that the zero-cost ventilation and acid-removal technology will lead the development direction of clean energy-saving production technology for wet zinc smelting in China.

Refrigeration Pressure Regulator

Pressure Regulator is commonly used in the refrigerant cycle to control the low and high pressure sides of the system under varying load conditions, there are 4 types, pls see below.

1. Evaporator Pressure Regulator
2. Condensing Pressure Regulator
3. Crankcase Pressure Regulator
4. Receiver Pressure Regulator

Crankcase Pressure Regulator, Condensing Pressure Regulator, Evaporator Pressure Regulator, Receiver Pressure Regulator

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