Sodium Hydrosulfide Process Improvements
Sodium Hydrosulfide Process Improvements
Process Improvements
1 Replacing Water-Ring Vacuum Pumps with Water-Jet Vacuum Pumps
The water-ring vacuum pump model PMK-3 used in our branch plant suffered from high energy consumption, outdated equipment, and frequent maintenance, leading to excessive operating costs. To address this, we decided to eliminate and replace it with the RPP-1000 water-jet vacuum pump. After the modification, annual savings of 170,000 yuan in electricity costs, 70,000 yuan in water costs, and 70,000 yuan in maintenance costs were achieved.
2 Using Circulating Water Instead of One-Time Well Water in the Hydrogen Sulfide Absorption System
The reactor used for hydrogen sulfide absorption is a jacketed heat exchanger, where the jacket space serves as a passage for heating or cooling media. When used as a cooler, the cooling medium (e.g., cooling water) enters through the lower jacket connection and exits through the upper connection. Since the absorption of H₂S is exothermic, rising temperatures can inhibit the formation of sodium hydrosulfide.
To control the reaction temperature, our plant's hydrogen sulfide workshop primarily uses water as the cooling medium for the absorption tanks. Previously, well water was used once and then discharged without recycling. The outlet temperature of the cooling water after absorption was high (inlet: 18°C, outlet: 65°C), while the water circulating pump water had an inlet of 18°C and outlet of 22°C. The used water was discharged into trenches, increasing sewage volume. To reduce production costs, measures were implemented to recover and reuse the cooling water, supplemented with a small amount of fresh well water as needed. This significantly reduced the consumption of barium chloride-treated well water and overall production costs.
1 Replacing Water-Ring Vacuum Pumps with Water-Jet Vacuum Pumps
The water-ring vacuum pump model PMK-3 used in our branch plant suffered from high energy consumption, outdated equipment, and frequent maintenance, leading to excessive operating costs. To address this, we decided to eliminate and replace it with the RPP-1000 water-jet vacuum pump. After the modification, annual savings of 170,000 yuan in electricity costs, 70,000 yuan in water costs, and 70,000 yuan in maintenance costs were achieved.
2 Using Circulating Water Instead of One-Time Well Water in the Hydrogen Sulfide Absorption System
The reactor used for hydrogen sulfide absorption is a jacketed heat exchanger, where the jacket space serves as a passage for heating or cooling media. When used as a cooler, the cooling medium (e.g., cooling water) enters through the lower jacket connection and exits through the upper connection. Since the absorption of H₂S is exothermic, rising temperatures can inhibit the formation of sodium hydrosulfide.
To control the reaction temperature, our plant's hydrogen sulfide workshop primarily uses water as the cooling medium for the absorption tanks. Previously, well water was used once and then discharged without recycling. The outlet temperature of the cooling water after absorption was high (inlet: 18°C, outlet: 65°C), while the water circulating pump water had an inlet of 18°C and outlet of 22°C. The used water was discharged into trenches, increasing sewage volume. To reduce production costs, measures were implemented to recover and reuse the cooling water, supplemented with a small amount of fresh well water as needed. This significantly reduced the consumption of barium chloride-treated well water and overall production costs.
Zibo Anhao Chemical Co., Ltd.
Premium Sodium Hydrosulfide supplied by Zibo Anhao Chemical Co., Ltd
This versatile sulfur chemical fits leather treatment, mineral flotation, paper making and waste water treatment.
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This versatile sulfur chemical fits leather treatment, mineral flotation, paper making and waste water treatment.
Stable chemical property, strict quality inspection and sufficient stock ensure steady global supply cooperation.