The first project of producing soda ash from concentrated seawater

    The exploration of producing soda ash with concentrated seawater from seawater desalination is successful. On March 15, Tangshan Sanyou Group Co., Ltd., which carried out this pioneering work, announced that since its commissioning on January 31, the first concentrated seawater comprehensive utilization project constructed by the group has been running smoothly for 45 days. All process indexes of the plant are stable, and the quality of refined brine is normal. 1090 cubic meters of concentrated seawater can be used per hour, and 236 kg of raw salt consumption can be reduced per ton of soda ash,

The consumption of once through water will be reduced by about 4.1 tons, and the annual profit will be more than 100 million yuan.

According to Chairman Mao Zhiyi, the project uses the discharged concentrated seawater from the desalination unit as raw material

After refining, it is used in soda production. It is estimated that the project can utilize 18 million cubic meters of concentrated seawater annually, reduce carbon dioxide emissions by 40000 tons, comprehensively utilize 600000 tons of raw salt, and save 10 million cubic meters of water resources.

The completion and operation of the project has realized the full recycling of salt and water resources, reduced the production cost of soda ash, and further extended the industrial chain of seawater desalination.

In recent years, the development of desalination industry has been plagued by the development of desalination industry.

In the end, they turned their attention to the waste water produced by desalination.

Sanyou group has set up a research group for the comprehensive utilization of concentrated seawater. It has cooperated with several research institutions, such as the seawater desalination research center of Hebei University of technology, the membrane technology center of Nanjing University, and Hangzhou Water Treatment Research Institute to explore the solution to the problem of crude salt resources in an all-round way. Since 2006, scientific and technological personnel have carried out thousands of tests, and solved many problems, such as calcium removal by boiler flue gas, magnesium removal by calcium carbide slag, efficient pressure filtration of salt mud, preheating and concentration of concentrated seawater, etc

The new technology of water used in soda ash production has made a great progress in the history of soda ash development.

The project was officially started on January 8, 2011. After one year of project construction and device commissioning, it was officially put into operation on January 31, 2012 and has been running stably for 45 days.

The project has been listed in the national key industry revitalization and technical transformation budget investment plan.

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