10 Years After Accomplishing Saline-alkali Cooperation to Complete Ecological Cycle 10 years ago Weifang built China's first marine chemical ecological zone

The reporter learned at the China Weifang High-level Forum on Eco-industrial and Circular Economy in 2005 that ended on August 15 that Shandong Weifang has built China's first marine chemical ecological demonstration zone.
10 years ago, at that time, the Weifang soda ash plant and the Yangkou Salt Plant broke through barriers with the support of the relevant authorities of the country, and the first in the country to achieve the combination of salt and alkali, established Haihua Group, laid the foundation for rapid and sustainable development. . At present, the Group's annual output of 2 million tons of salt ranks first in the country, and annual production capacity of 2 million tons of soda ash is among the highest in the world.
The rapid development of enterprises has greatly increased the demand for resources and energy, and has also brought about environmental protection pressure. Since 1999, Haihua Group has been persisting in exploring and planning ideas for the development of eco-industries. After years of efforts, Haihua has achieved a sound development of the chemical industry and ecology. At present, Haihua has achieved the goal of “one water and five uses” of seawater: up to 70 million cubic meters of brine per year is first used for the production of shellfish, shrimp and other seafood, and then transported to soda ash plants and potassium sulphate plants. It is used for process cooling; at the same time, the intermediate brine with its water temperature raised is sent to the bromine plant for bromine; the brine with bromine is sent to the salt field for drying; and the remaining brine after drying with salt is used for the production of potassium sulfate and magnesium chloride. After five processes, the useful portion of seawater is basically eaten and dried.
Not only that, Haihua also used the waste of upstream products as the raw material of downstream products, basically achieving the finishing of the industrial chain: production of soda ash from raw salt, production of baking soda, brewing alkali and white carbon from soda ash, etc. The production of calcium chloride and sodium chloride from the production of alkali waste liquid and the production of flame retardants, refrigerants, and pharmaceutical intermediates using bromine as raw materials, and production of potassium sulfate and magnesium chloride from the remaining brine as raw materials, To make full use of resources.
The virtuous circle of ecology has ensured the sustainable development of Haihua. Last year, Haihua's sales revenue was 11.03 billion yuan, and profits and taxes were 1.19 billion yuan. The comprehensive efficiency ranks first in China's basic chemical raw material manufacturing industry. The development zones where Haihua is located have completed three times, four times, and six times the total value of production, total fiscal revenue, and foreign trade exports, respectively, in 1995.
Recently, as the first eco-industrial demonstration zone in the field of domestic marine chemical industry, Haihua’s development zone passed the appraisal organized by the State Environmental Protection Administration.

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