Technical Advantages
1. Skid-mounted modular design, plug-and-play
2. Low power consumption, high cost-effectiveness
3. Fully automatic PLC control
4. Customized design available according to customer requirements
Product Overview
The molten salt furnace is a high-temperature heat supply system using molten salt as the heat carrier. The system mainly consists of a molten salt circulating heat supply system, a combustion system and an electrical control system. The molten salt circulates in a closed circuit, and the outlet temperature is automatically adjusted according to the load of the heat-consuming equipment.
This series of molten salt heating furnaces is suitable for processes above 400 °C such as solid caustic soda evaporation and concentration, melamine, alumina digestion, high-temperature regeneration of waste liquid and waste oil, and solar thermal heat storage. At operating temperatures of 350–480 °C, organic heat carriers cannot be used, and molten salt heat carriers are required. The molten salt heating furnace is a once-through special industrial furnace that uses oil or gas as fuel and molten salt as the heat carrier, and uses a molten salt pump to force liquid-phase circulation, transferring heat to the heat-consuming equipment before returning for reheating.
Solid Caustic Soda Evaporation Process:
The 32% caustic soda liquor from the electrolysis process is fed by the 32% caustic soda pump into the No. I effect falling-film evaporator and concentrated to 44%; it is then preheated to 100 °C in the caustic soda heat exchanger by the 44% caustic soda pump, fed into the No. II effect falling-film evaporator and concentrated to 50%, and then fed into the No. III effect falling-film concentrator, where it is heated by the molten salt from the molten salt heating furnace and evaporated to 98%. This molten caustic soda is cooled in the flaking machine to produce flake caustic soda, which is then packaged and shipped.
Process Characteristics of the Molten Salt Furnace Unit:
The molten salt is circulated by a pump from the molten salt tank through the forced-circulation molten salt heating furnace fired with natural gas and heated to 430 °C. In the burner, the flue gas transfers heat to the molten salt through thermal radiation and convection. After leaving the molten salt furnace, the molten salt circulates to the lower collecting header of the final concentrator and is evenly distributed to each concentrating falling-film tube; inside the falling-film tubes, the salt flow and the caustic soda flow move in countercurrent. Molten salt heating raises the caustic soda concentration from about 62.2% to about 98%. The cooled molten salt flows down by gravity from the outlet of the final concentrator into the molten salt tank. The combustion air fan supplies preheated combustion hot air at about 220 °C to the burner, raising the furnace temperature and saving operating costs. The combustion air is heated to about 220 °C by the flue gas in the combustion air preheater, after which the cooled flue gas is discharged to the atmosphere through the chimney.
Application Fields:
It is mainly used in high-temperature processes in chemical fields such as solid caustic soda, fertilizers, melamine and alumina, as well as aluminum production and heat storage systems for solar thermal power generation.
Company Advantages
Boasting 25 years of professional industry experience in production and supply, CHLORY factory delivers premium,cost-effective chemical products with reliable quality. Worldwide exported to more than 50 countries, including Italy, USA, Saudi, Africa and other countries and some foreign companies are our agents locally. Equipped with fully automatic production systems and scientific modular production line design, we achieve stable output, high efficiency and low energy consumption while strictly complying with industrial standards. Different from ordinary manufacturers, CHLORY provides flexible customized services tailored to diverse customer needs on product specifications, packaging and solutions. With direct factory pricing and optimized production processes, we help clients cut procurement costs and obtain high-quality, stable chemical supplies with comprehensive professional support.
