Public announcement on the approval of the environmental impact assessment report for CNOOC Chemical Fudao’s 800,000 tons per year project for producing acetic acid from CO2-rich natural gas
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CNOOC Chemical’s 800,000-ton per year project for producing acetic acid from CO2-rich natural gas was approved. In December 2024, the Hainan Department of Ecology and Environment issued a decision regarding the environmental impact assessment report for CNOOC Chemical’s Fudao Company’s project for producing acetic acid from CO2-rich natural gas at a rate of 800,000 tons per year, and made this decision public. The acetic acid project is an expansion project. The main products of the project include 800,000 tons per year of acetic acid, 222,000 tons per year of liquid ammonia, 1,520 tons per year of propionic acid, and 720 tons per year of hydrogen. The total investment for the project is 4,747.26 million yuan. According to the published environmental impact assessment report, the process flow is as follows: Methane, CO2, and water present in the natural gas feedstock are converted into syngas through a reforming reaction in a natural gas conversion unit. The syngas then enters a CO2 removal unit, where CO2 is removed by absorption using MDEA amine solution, resulting in purified gas. This purified gas proceeds to a CO separation unit, where CO and hydrogen-rich gas are separated through temperature-dependent adsorption and pressure-dependent adsorption processes. CO enters the acetic acid plant, where it reacts with methanol via a carbonylation reaction to produce acetic acid, with propionic acid as a by-product. Hydrogen-rich gas enters the PSA hydrogen production unit to extract hydrogen, which is then combined with nitrogen in an ammonia synthesis unit to produce ammonia. In the reforming reaction, the methane conversion rate in the feed natural gas was 88.8%, the CO2 conversion rate was 91.4%, and the yield of CO in the products was 99.9% ； The conversion rate of CO in the carbonylation reaction (expressed as acetic acid) is 89.8%, with a yield of acetic acid product of 99.8% ； In the ammonia synthesis reaction, the hydrogen conversion rate (expressed in terms of ammonia) is 98.2%, and the yield of the produced ammonia is 99.9%. The project utilizes highly advanced international technologies such as mature natural gas conversion, PSA separation, acetic acid production via the carbonyl method, and synthetic ammonia production using high-pressure iron-based catalysis. The most notable feature of this project is that the natural gas conversion process uses a catalyst with a low water-to-carbon ratio, a catalyst that is already in use by manufacturers in Hungary and North America.
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It wasn’t specifically mentioned, but Happy New Year! ! !
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September 2022 update: Latest progress on Hainan’s project to produce methanol from 1.2 million tons of CO2-rich natural gas! On September 14, the Hainan Provincial Department of Ecology and Environment announced that it had accepted the environmental impact assessment documents for Fudi Island Company’s project to produce methanol from CO2-rich natural gas at a capacity of 1.2 million tons per year. Project Overview: The 1.2 million tons per year methanol production project from CO2-rich natural gas developed by Fudao Company is located in Dongfang City, Hainan Province. It is a new construction project with a construction period of 30 months. The total investment amount is 3,089,580,000 yuan, with an additional 64,180,000 yuan allocated to environmental protection measures; this amount represents 2.07% of the total investment. Construction location: Dongfang City, Hainan Province. Constructor: Offshore Oil Fudao Co., Ltd. Environmental assessment agency: Sinopec Ningbo Engineering Co., Ltd. Construction content: Construction of a methanol production plant with an annual output of 1.2 million tons, along with associated utility systems and auxiliary facilities. 1) Process plant: A new methanol production facility will be built. It includes natural gas conversion, syngas compression, methanol synthesis, PSA hydrogen recovery, methanol distillation, intermediate tank areas, as well as the methanol plant substation and cabinet rooms. 2) Utility systems: This includes the installation of new gas boilers (to supply steam to both the Phase 1 and Phase 2 methanol plants, as well as the Phase 2 fertilizer plant), water treatment plants, circulating cooling water stations, desalination stations, fire water stations, foam fire suppression systems, air compression stations for oxygen production (to supply nitrogen to the acrylonitrile plant), as well as utility substations and utility cabinet rooms, along with the expansion and renovation of the main substation in Phase 1. 3) Auxiliary facilities: include the finished product tank area, the plant-wide flare stack, the central control room, and a central laboratory on the first floor of the building designated for the biodiesel conversion project (with an additional gas cylinder room). 4) Off-site works: off-site power supply, off-site telecommunications. Leveraging its advantages in the comprehensive utilization of carbon dioxide, this project can enable on-site conversion of resources, thereby establishing a solid foundation for the low-cost production of domestic methanol. The emergence of new application areas such as methanol-based olefins, methanol-based acetic acid, as well as methanol boilers, methanol gasoline, and fuels for use in vehicles and ships has further driven up the demand for methanol in this industry.