Salt is not only a nutrient and seasoning in people’s daily life, but also a fundamental raw material in the chemical industry. Salt production generally involves the evaporation of brine in a vacuum state from a steam boiler or steam generator in a set of steaming tanks. Due to the pressure drop difference between the tanks, a gradual decrease in boiling point is formed resulting in the successive transfer of heat. The entire salt production is divided into four major processes: brine treatment, transpiration salt production, dehydration and drying, but also packaging and storage. The role of steam boilers in the entire process is irreplaceable. Brine treatment is an important process in salt production, which involves multiple steam heating through high-temperature and high-pressure steam boilers. Wet salt dehydration and drying also require steam heating. Most of the moisture is vaporized to obtain dry salts with a certain range of moisture content by coming into contact with hot air. The temperature of the steam boiler is adjustable, which is suitable for the temperature requirements of different transpiration stages of brine treatment, which is beneficial for shortening the drying time of wet salt.

A company in Pakistan is a large salt chemical enterprise located in Islamabad, mainly engaged in the production and sales of edible salt and industrial salt. Due to production needs, the company has decided to add a set of steam equipment to its production line. After multiple technical communications, researches and evaluation of various boilers in the market, the customer finally selected zhongde Boiler's DZL series biomass fired steam boiler. This is an efficient and environmentally friendly boiler that can use biomass particles as fuel. Biomass particles generate relatively low carbon dioxide emissions during their combustion process as renewable fuel, which can effectively reduce environmental pollution and carbon emissions for enterprises, and achieve the goal of environmental protection production. In addition, this biomass boiler also has the characteristics of  various advanced control technologies, such as intelligent control and safety monitoring to ensure safety and reliability in the production process. At the same time, this series of boilers has been optimized by designers from zhongde Boiler. It is with a reasonable arrangement of furnace arches, walls, and heating surfaces. The high-efficiency heat transfer element, threaded smoke tubes independently developed by zhongde Boiler are used to enhance heat transfer efficiency, which achieves the thermal efficiency of over 88%. The picture shows the delivery site of the boiler: