石油焦制氢灰渣综合利用
The comprehensive utilization project of hydrogen production ash and slag from petroleum coke is a supporting component of the 20 million tons/year refining and chemical integration project of PetroChina Guangdong Petrochemical Company.
During the petroleum refining process, most of the heavy metals in crude oil are enriched in petroleum coke, and further concentrated in the ash residue from hydrogen production from petroleum coke through the hydrogen production process from petroleum coke. Therefore, the ash residue from hydrogen production from petroleum coke is considered hazardous waste and requires proper disposal. Given that our company possesses hazardous waste management qualifications and has many years of research foundation and mature process routes in the disposal of hazardous waste containing nickel and vanadium heavy metals, we can achieve the conversion of hazardous waste from hydrogen production from petroleum coke into general solid waste and maximize resource utilization. Therefore, Guangdong Petrochemical entrusted our company to invest in the construction of a comprehensive utilization device for ash residue from hydrogen production from petroleum coke, ensuring the commissioning and operation of its refining and chemical integration project.
The comprehensive utilization technology of hydrogen production ash from petroleum coke can process hydrogen production ash from petroleum coke with different working conditions and compositions in the same set of equipment. The entire process adopts an all-inorganic technology. The decarbonization section can produce about 1 million tons of high-pressure steam per year. The acidolysis section mainly dissolves metals in the burned slag slurry in acid, and the resulting acid-soluble slag, namely silica-calcium powder, can be used to make environmentally friendly building materials. Then, it undergoes further separation and purification through multiple processes, ultimately forming vanadium-iron products and aluminum-nickel products. The entire process has no organic wastewater or organic waste agent emissions, no secondary pollution, and all heavy metals can be directly productized for export, achieving comprehensive resource utilization of hydrogen production ash from petroleum coke.
Dongyue Environmental Protection's 400,000 tons/year comprehensive utilization project of ash and slag from hydrogen production from high-sulfur petroleum coke
Guangdong Dongyue Environmental Protection Technology Co., Ltd. (hereinafter referred to as "Dongyue Environmental Protection") is a wholly-owned subsidiary of Huicheng Environmental Protection Group, with a registered capital of 246 million yuan. It is located in the booming petrochemical new area - Dananhai Petrochemical Industrial Zone, Jieyang City, Guangdong Province. In 2021, Dongyue Environmental Protection was entrusted by PetroChina Guangdong Petrochemical Company to undertake the construction of the petroleum coke hydrogen production ash comprehensive utilization project. The total investment of the project is 1.23 billion yuan, covering an area of over 240 acres, with an ash treatment capacity of 400,000 tons per year. The construction of this project provides solid support for the overall commissioning and operation of Guangdong Petrochemical's refining and chemical integration project, ensuring its long-term smooth operation.
The project itself falls under the category of solid waste comprehensive utilization and circular economy projects. It can transform gasification ash from petroleum coke hydrogen production facilities from hazardous waste into high-value-added vanadium and nickel products, as well as other general industrial products. This aligns with the national concept of circular economy and green development, meets industry development requirements and trends, fills the gap in the domestic comprehensive utilization industry of petroleum coke hydrogen production ash, and to some extent alleviates the shortage of vanadium and nickel products in China.
