China's advancement in the use of chlorine resources

On August 8, Huayi Group Shanghai Chlor-Alkali Chemical Co., Ltd. announced that the first set of process parameters for the first set of 1000 tons of hydrogen chloride catalytic oxidation of chlorine (Deacon technology) has reached the target, and China has become the second in the world. The country of Deacon technology. This indicates that China's hydrogen chloride conversion to chlorine technology research and development has entered the world's frontier fields, which is of great significance for China to achieve deep recycling of chlorine resources and energy conservation and emission reduction.

Shanghai Chlor-Alkali Company said that it is the first domestic pilot plant independently researched and developed by enterprises, with a fixed bed tubular reactor and special catalyst as the core technology, and it has been safely controlled since the start of the car on May 18th. For stable operation, the process parameters of the key indicators of hydrogen chloride conversion rate reach the design index value.

China is a big country in the production and consumption of chlorine. The annual chlorine consumption exceeds 20 million tons, accounting for about one-third of the world's total chlorine consumption. However, in the production of domestic chlorine-consuming products, the utilization of chlorine atoms is low, and some even eventually convert 100% into hydrogen chloride. At present, the country's by-produced hydrogen chloride reaches 5 million tons/year, and the search for hydrogen chloride has become a common problem in the development of chlor-alkali and chlorine-related industries. In this regard, Zhang Wenlei, vice chairman and secretary general of the China Chlor-Alkali Industry Association, pointed out that in the current overcapacity of the industry, it is necessary to strengthen the chlorine research of chlorine products, form recycling of chlorine resources, improve application efficiency, and help reduce the supporting facilities. The newly expanded caustic soda production capacity will achieve the “alkali chlorine balance” and promote the further optimization and upgrading of the industrial structure.

Chlor-alkali production is a high-energy-consuming industry. It consumes about 2,200 kWh of electricity per ton of chlorine gas. If chlorine is produced by by-product hydrogen chloride, it can not only recycle chlorine resources, but also greatly improve the energy-saving and emission reduction level of the industry. To this end, the independent development of Deacon technology has become the dream of Shanghai chlor-alkali people.

Since 2009, Shanghai Chlor-Alkali Company Technology Center has organized scientific research forces and devoted all efforts to Deacon technology research. With the support of Huayi Group, the project adhered to open cooperation and successfully developed the core device of fixed bed tubular reactor and special catalyst with practical economy, and applied for national patent. The test results show that the catalyst has good stability and can be used continuously for more than 9,600 hours.

It is reported that the Shanghai chlor-alkali company is developing the Deacon industrialization process package based on the pilot plant. It is planned to build a 100,000-ton hydrogen chloride catalytic oxidation chlorine plant in the Shanghai Chemical Industry Park in 2016, which will provide the future chlorine demand for the park. Effective guarantee to further promote the full cycle of the chlorine industry chain. He Gang, the general manager of the company, told the reporter: “Enterprises must rely on technological advancement, especially through independent innovation to gain the competitiveness of development. The success of this Deacon pilot test is only the first step of Shanghai’s chlor-alkali’s pursuit of dreams; The company will continue to organize its strengths to overcome difficulties and realize the goal of industrialization of the company's Deacon technology as soon as possible."