Recently, Hengtai Chemical Group Co., Ltd. of Xingtai City, Hebei Province, has started trial production of 60,000 tons of potassium sulfate and 20,000 tons of trichlorosilane. This marks the initial stage of its “acid-fertilizer-silicon” resource comprehensive industrial upgrading chain. form.

According to reports, Hengyuan Chemical Group Co., Ltd. will invest 1 billion yuan this year to start construction of an annual output of 120,000 tons of potassium sulfate, 60,000 tons of trichlorosilane project, expand production scale, extend the industrial chain, for the "twelfth five" period The construction of a raw material base for acid fertilizers and 10,000 tons of silicon photovoltaic materials lays the foundation.

Yang Zhenlin, chairman of Hengyuan Chemical Industry Group Co., Ltd., said that as the new projects are put into production and the industrial chain is continuously extended and upgraded, the company will form an annual output of 240,000 tons of sulfuric acid, 180,000 tons of potassium sulfate, and 80,000 tons of high purity in 3 to 5 years. The production scale of trichlorosilane and 10,000 tons of polysilicon fills the gap in the current development of the photovoltaic industry in Xingtai that lacks polysilicon raw materials.

The strategic significance of the transition from sulphur to silicon

From sulfur to silicon, from traditional resource-based chemical companies to strategic new energy industry. It is understood that 9 years ago, Hengyuan Chemical Co., Ltd. liabilities 55 million yuan; 9 years later in 2010, the company's taxes, profits both exceeded the 50 million yuan mark, become the sulfuric acid industry in Hebei Province, the first index of economic efficiency enterprises. In the past nine years, what is the secret of Hengyuan Chemical Group's development?

“Pyrite iron contains sulfur and iron, and waste heat can be generated during the production of sulfuric acid. In the past few years, Hengyuan Chemicals has fully utilized these three resources, relying on technological innovation, and has developed a deep processing of resources and an extension of the industrial chain. Improve the development of value-added products." Yang Zhenlin introduced the industry's "Hengyuan model" connotation: the resources "eat dry squeeze net", comprehensive utilization of processing value-added.

Hengyuan Chemical's initial production process is to extract sulphur from pyrite ore to produce sulphuric acid and then use sulphuric acid to produce fertilizer. This process produces an annual output of 100,000 tons of by-products, namely "red slag", which is mainly composed of iron oxide. These "red slags" were sold to nearby cement plants simply at a low price of 10 yuan per ton, and the resource utilization rate was very low. As the steel market gradually warms up, Hengyuan Chemical Co., Ltd. realized that the removal of 40% of the "red slag" will greatly increase profit margins.

Reuse, resource. In January 2002, Yang Zhenlin, the new chairman of the board of directors, made a decisive decision and invested 2 million yuan to carry out technical research. Through secondary oxygenation, the red ferrous oxide contained in the “red slag” was oxidized to triiron tetroxide, becoming “black slag”. ". The “red slag black slag” project was put into production immediately and the annual output of fine iron powder was 100,000 tons.

Yang Zhenlin calculated the accounts for the reporter: In the past, "red slag" sold for about 10 yuan per ton, and turned into "black slag" and produced iron fines and "red earth". Iron fines sold more than 400 yuan per ton, "red earth" Selling 55 yuan per ton, only this one technological innovation will enable the company to increase annual production value by more than 40 million yuan and increase profits and taxes by 10 million yuan.

However, Hengyuan Chemical did not stop there. Later, the company introduced a new process called "iron desulphurization" to re-desulphurize the fine iron powder extracted from "black slag", and the desulphurized iron concentrate powder content reached the national standard, directly. Sold to Xingtai Iron and Steel and other large steel plants, the price per ton increased by 70%.

“Now iron fine powder can sell 1200 yuan to 1,400 yuan per ton, and 'red clay' is used as a raw material for cement plants, and it can sell for 80 yuan per ton,” the company’s sales staff told reporters.

How to maximize resource utilization?

Sulfur is utilized, and iron is used. The waste heat generated in the production of sulfuric acid cannot be lost. In order to optimize the production process and reduce energy consumption and costs, in 2009, Hengyuan Chemical invested 130 million yuan to build an annual output of 120,000 tons of sulfuric acid production line and waste heat power generation projects, and the level of comprehensive utilization of resources was further improved. The waste heat recovery and power generation project can achieve a power generation capacity of 2,250 kilowatts per hour. Compared with before, the production of one ton of sulfuric acid can save 20 tons of water, save 30 degrees, and save 11,000 tons of standard coal annually.

In order to comply with the country’s industrial development orientation, develop new energy, and further promote the upgrading of the industrial chain, in September 2010, Hengyuan Chemical Co., Ltd. combined with Hebei Lianli Silicon Industry Co., Ltd., invested 150 million yuan, and newly added an annual output of 60,000 tons of potassium sulfate cum The 20,000-ton trichlorosilane project has taken a key step in the photovoltaic industry.

So far, the use of resources tends to be maximized: production of sulfuric acid from pyrite ore, production of potash (potassium sulfate) and phosphorous fertilizer from sulfuric acid, extraction of fine iron powder, sulfur powder and “red earth” from sulfuric acid waste, during the production of acid from pyrite Produce excess steam to generate electricity and use potassium fertilizer to produce trichlorosilane. Hengyuan Chemical has formed a “zero waste, zero-emission, zero-pollution” circular economy industrial chain, and has become the first zero-cost enterprise for sulfuric acid production in China, starting from traditional The chemical industry has developed into new energy fields.

According to the development plan of the controlling shareholder China Shenghua Group, Hengyuan Chemical will next complete the photovoltaic industry chain and eventually form a 1,000MW polycrystalline silicon solar cell module scale. Relying on Hengyuan Chemicals, during the "12th Five-Year Plan" period, Neqiu County also put the photovoltaic industry as one of its development priorities.

Dual Plate Check Valve

EJ Industrial Group Co.,Ltd is a leading professional valves manufacturer in China.

Our industry valves products range cast steel and forging steel Floating Ball Valve, Trunnion Mounted Ball Valve, DBB ball valve, gate valve, globe valve, check valve and high performance butterfly valves. The fields we serve include oil and gas, LNG, refinery, chemical, pharmacy, mining industry, and so on.

All our products are manufactured and tested according to international standards API 6D, API6A, API600, ANSI B16.34, API607, API6Fa, API 591, API594,API609, API602, BS5153, BS1868, BS1873, DIN3202, DIN3352, BS5163, BS5153,BS5150, AWWA C509, API598, and EN12266.

Dual Plate Check Valve,Dual Wafer Check Valve,Double Door Check Valve,Check Valve

EJ Industry Professional Valve Manufacture , https://www.ej-industry.com