[Haichuan Chemical Salary Updates] The hydrogenation system of the Gansu Honghui project was started up and put into operation in one go

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On the morning of June 7, the hydrogenation unit for the production of coal tar with a capacity of 500,000 tons per year, as part of the first phase of Gansu Honghui Energy Chemical Co., Ltd.’s project for the selective utilization of 10 million tons of coal, was successfully commissioned in one go, producing qualified oil products. 　　The 500,000 tons per year coal tar hydrogenation unit is the main facility in Honghui Company’s project for the selective utilization of coal. Using light and heavy coal tar as raw materials, this unit employs a pretreatment system, a hydrogenation reaction system, high and low pressure separation systems, and a distillation system to remove impurities such as asphaltenes, sulfides, and nitrogen oxides from the raw materials, thereby producing oil products that meet **emission standards and enabling the efficient utilization of coal tar. 　　After a series of operations including purging and displacement, oil transfer, instrument calibration, catalyst loading, gradual temperature increase, airtightness testing, and oil introduction for sulfidation, the facility produced 1# light coal tar and 2# light coal tar on June 7. Laboratory tests showed that all parameters such as sulfur and nitrogen content of these oils met the **standards, resulting in a successful safe and green commissioning of the plant. 　　The total investment for Gansu Honghui Energy Chemical Co., Ltd.’s project for the differentiated utilization of 10 million tons of coal amounts to 8.98 billion yuan. Following the principle of \"planning once and implementing in phases,\" the first phase involves the construction of a facility for the differentiated utilization of 1.5 million tons of coal, as well as a plant for the comprehensive processing of 500,000 tons of coal tar through hydrogenation; the investment for this phase is 2.64 billion yuan. The main construction components include: a 5-series external heat-type rotary furnace with a capacity of 300,000 tons per year, a hydrogen production unit with a capacity of 48,000 Nm3/h, a hydrogenation unit with a capacity of 500,000 tons per year, a gas purification unit with a capacity of 29,000 Nm3/h, and a wastewater treatment unit with a capacity of 150 m3/h, along with supporting facilities such as heating systems, general layout for transportation, and power supply systems. Once the project is put into operation, it will be able to process 1.5 million tons of raw coal per year, producing 760,000 tons of upgraded coal, 5,000 tons of liquefied gas, 110,000 tons of No. 1 coal-based aromatics, 300,000 tons of No. 2 coal-based aromatics, 30,000 tons of heavy oil, and 15,000 tons of dry gas. 　　Gansu Honghui Energy Chemical Co., Ltd. is a mixed-ownership enterprise established in 2014 with joint investment from Jiuquan Iron and Steel (Group) Co., Ltd. and Guanghui Energy Co., Ltd.; each party contributes 50% of the capital, resulting in a registered capital of 3 billion RMB.

Gansu Honghui’s 500,000-ton coal tar hydrogenation plant is the main facility in the project for the selective utilization of coal. It was designed by Changling Refining & Chemicals Yueyang Engineering Design Co., Ltd., which also provided PC management and commissioning services. The process technology employed is the wide-range coal tar hydrogenation technology developed by Hunan Changling Petrochemical Technology Development Co., Ltd. The construction was carried out by China National Chemical Engineering Corporation No. 13 Construction Co., Ltd.; more than 400 pieces of equipment were installed, over 100,000 meters of process pipelines were laid, and structural steel weighing over 200 tons was used. In addition, 210,000 meters of electrical cables and 650,000 meters of instrument cables were installed. Through two years of hard work by all those involved in the project, the construction milestones set by the client were met, and the quality of the construction work complied with ** standards and industry norms, satisfying the production requirements. Gansu Honghui’s 500,000-ton coal tar hydrogenation plant consists of six main sections: pretreatment, liquid-phase hydrogenation, hydrogenation refining and product distillation, hydrocracking and product distillation with absorption, desulfurization and wastewater stripping, as well as utility systems. Using light and heavy coal tar as raw materials, this plant removes impurities such as asphaltenes, sulfides, and nitrogen oxides from the raw material through a pretreatment system, hydrogenation reaction system, high and low pressure separation systems, and distillation systems, thereby producing oil products that meet **emission standards and enabling the clean and efficient utilization of coal tar. The annual processing capacity for medium and low-temperature coal tar is 500,000 tons, with a total investment of around 700 million yuan.

What technologies are used for the differentiated utilization?