The hydrogen production facilities associated with the second phase of Huizhou Petrochemical Plant are set to be upgraded, with a total investment of 676.8 million yuan

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The hydrogen production facilities associated with Huizhou Petrochemical Phase II are set to be upgraded, with a total investment of 676.8 million yuan. Author/Source: Date: 2022-05-09. Clicks: 13. The upgrade project for these hydrogen production facilities, which has attracted considerable public attention, is about to begin. It is reported that the total investment for this project is estimated at 676.8 million yuan, of which 83.4507 million yuan is allocated to environmental protection measures. At present, the environmental impact assessment documents for this project are being displayed on the website of the Huizhou Ecology and Environment Bureau. If the public has any comments, they may send letters or make calls to the bureau by May 18 to express their views (address: Building 7, Civic Service Center, 31 Sanxin North Road, Jiangbei, Huicheng District, Huizhou City, postal code: 516001) ； Contact number: 0752-2167979). It is reported that the Huizhou Daya Bay Economic and Technological Development Zone planned to establish a petrochemical industrial zone in 2003. This petrochemical industrial zone is one of the 5 petrochemical bases in Guangdong Province, as well as one of the seven key petrochemical industry bases under development. The constructor of the optimization and renovation project for the hydrogen production facilities associated with Huizhou Petrochemical Phase II is CNOOC Huizhou Petrochemical Co., Ltd. (hereinafter referred to as “CNOOC Huizhou Petrochemical”), while the environmental impact assessment agency is Qingdao Ousaisi Environment and Safety Technology Co., Ltd. The project site is located within the reserved area for CNOOC Huizhou Petrochemical’s existing facilities in Plot D1 of Daya Bay, Huizhou City, with no additional land required. “This project involves a technical upgrade of the existing equipment; the main work includes installing a new gasifier to replace the current one, which has unstable operation. The problems existing in current gasification-based hydrogen production units severely affect the long-term stable operation of hydrogen-using equipment in the refining area; moreover, frequent start-up and shutdown operations result in large amounts of water gas being directly discharged into flares, leading to an increase in pollutant emissions. ”According to the environmental impact assessment document, the existing gasification-based hydrogen production unit (POX unit) at CNOOC Huizhou Petrochemical is part of the second phase of the refinery project; it was constructed simultaneously with this phase and put into trial operation at the same time. Since the operation of the gasification hydrogen production plant began, the existing E-Gas gasifiers have experienced frequent blockages in their second stage due to technical issues, which forces the plant to shut down repeatedly; in some cases it even becomes unable to operate, preventing it from achieving its designed production capacity on a continuous basis. To address the aforementioned issues, CNOOC Huizhou Petrochemical plans to change the operation mode of the existing 3 E-gas-based hydrogen production units from 2 in operation and 1 on standby to 1 in operation, 1 on standby, and 1 under maintenance. On top of this, 2 domestically produced multi-nozzle water-coal slurry-based hydrogen production units will be added to operate in a 1 in operation and 1 on standby configuration, with the accompanying facilities also being modified to suit these new arrangements. After the adaptive modifications were completed, the operation mode of the coal gasification hydrogen production plant was optimized to 2 in operation, 2 in standby, and 1 for maintenance. The production volumes of hydrogen and syngas remained consistent with those specified in the environmental impact assessment for the second phase of the project; that is, 151,400 tons of hydrogen and 119,000 tons of syngas per year. The design capacity of the coal gasification unit remained unchanged, while coal consumption was reduced. The units related to the downstream stage of coal gasification, such as low-temperature methanol washing, acidic water stripping, and sulfur recovery, remain unchanged; there are no modifications to the materials flowing in and out or to the design capacity of these units. The environmental impact assessment document states that the construction of the optimization and renovation project for the hydrogen production facilities associated with Huizhou Petrochemical Phase II is in line with **industrial policies**, **relevant regulations**, and local development plans, as well as with Huizhou City’s overall urban planning and the plan for the Huizhou Daya Bay Petrochemical Industrial Zone. The project employs clean production processes and advanced pollution control measures; wastewater and waste gas meet the required emission standards. The treatment and disposal of industrial solid waste adhere to the principles of reduction, resource utilization, and harmlessness, ensuring effective control of pollutant emissions. Analysis shows that after the modifications, the exhaust gases, wastewater, and noise can be discharged in compliance with standards, causing minimal impact on the environment; it will not degrade the environmental quality of the area, and environmental risks can be controlled.