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Hunan Petrochemical Implements Precise Measures to Achieve Energy Saving and Consumption Reduction

China Petrochemical News 2025-03-27 10:12:24

This report highlights that since the beginning of this year, Hunan Petrochemical has firmly established the concept that "reducing internal costs by one cent is easier than earning one cent more externally." The company has continuously promoted comprehensive cost control, coordinating the optimization of production and operation across four major industrial chains: refining, rubber, resin, and caprolactam-nylon. Significant achievements have been made in energy conservation and consumption reduction.

Optimize process control in the refining sector. In Refining Division II, energy consumption of the solvent system has been reduced, and the intensity of solvent regeneration has been controlled to prevent excessive regeneration from increasing steam consumption. Currently, the steam flow rate at the bottom of the three regeneration towers has decreased. Refining Division I has launched an energy-saving and consumption-reduction competition to encourage teams to participate in stable operation and energy-saving potential exploration of the facilities. In February, the gas consumption of the hydrogenation unit decreased by 5% year-on-year.

The rubber sector has reduced energy consumption in its facilities. The SBS (Styrene-Butadiene Block Copolymer) unit has decreased cyclohexane consumption, with a 13% year-on-year reduction in February. The SIS (Styrene-Isoprene Block Copolymer) unit has replaced the vacuum pump in the post-treatment process with a dry vacuum pump, reducing industrial water consumption by 0.5 tons per ton of product. Additionally, a comprehensive high-temperature wastewater reuse system has been implemented at the utility station to achieve water conservation and emission reduction.

The resin and chemical sectors are improving quality and efficiency. The caustic soda area of the resin department, as a major energy consumer of the company, focuses on the operation of key pumps and electrolytic cells, monitors the status of ion membranes, and strictly implements process interlock management to reduce system fluctuations. In February, the comprehensive electricity consumption of the ion membrane unit decreased by 1.7% year-on-year. The resin area has achieved increased production and reduced consumption through measures such as replacing the epoxy refining process recovery pump, resulting in a more than 30% year-on-year decrease in comprehensive energy consumption for this unit in February.

The caprolactam-polyamide sector has improved its indicators. The caprolactam unit has implemented an optimization modification of the gasification furnace coal burner in the gasification device, reducing the nitrogen content in the syngas. Currently, the number one gasification furnace has achieved a continuous operation cycle exceeding 120 days for the first time, and the average coal consumption per ton of ammonia is 15 kilograms lower than the design value. The polyamide unit has reasonably arranged the maintenance frequency of the polyamide units and developed new polyamide chip products. Since the beginning of this year, the consumption of caprolactam for producing one ton of polyamide chips has decreased by 12 kilograms year-on-year.

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Hunan Petrochemical Implements Precise Measures to Achieve Energy Saving and Consumption Reduction

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