【HaiChuan Chemical Project Updates】Zhejiang Jinju Chemical’s 39,000 Nm3/h air separation unit technology upgrade project
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The 39,000 Nm3/h air separation technology renovation project of Zhejiang Jinju Chemical Co., Ltd. is a key supporting project for the synthetic ammonia feedstock route and the energy conservation and emission reduction technology renovation projects, and it plays a decisive role in the successful commissioning of these projects. This project is also Jinju Company’s first EPC turnkey project that covers the entire process from basic design, equipment procurement, equipment installation to device delivery. Shi Huaibing said that with the care and support of the leadership of Juhua Group and Jinju Company, Donghua Technology will work closely with the parties involved in the project to complete the design, procurement, and construction tasks on time, in accordance with quality standards, and ensure that the project is completed successfully within the contracted deadline.
The technical renovation project for ammonia synthesis includes the following: the proposed site for the new plant is located to the south of the sulfuric acid production facility within the existing Juhua plant complex, with a total land area of approximately 14.27 hectares. Ammonia synthesis will be carried out using water-coal slurry gasification, while the existing low-pressure methanol production facility will be modified to produce methanol as a by-product. The designed capacity is 250,000 tons per year of ammonia and 100,000 tons per year of methanol. The main production units include a gasification unit, a purification unit, an ammonia synthesis unit, a methanol unit (reused), a liquid unit (reused), and methanol storage tanks, etc. Public and auxiliary facilities mainly include circulating water systems, sewage treatment systems, plant-wide flares, central control rooms, storage and transportation of raw coal, overall plant transportation systems, the plant’s fire protection system, the plant’s information management system (including monitoring systems), plant water supply and drainage systems (including the plant’s fire suppression water system), plant power supply and distribution systems, plant telecommunications systems, external piping networks, and underground pipeline networks.
Air separation technical upgrade project: This project is a supplementary initiative to the synthetic ammonia technical upgrade project. The proposed site for construction is located to the south of the fertilizer production facility within the existing Juhua plant area. The project covers an area of approximately 2.65 hectares and is intended to supply the oxygen required for water-coal slurry gasification, as well as nitrogen, instrument air, and compressed air for use throughout the plant. The project is planned to produce 39,000 Nm3/h of oxygen and 45,500 Nm3/h of nitrogen. The product plan is 259.032 million Nm3 of nitrogen per year, 282.632 million Nm3 of oxygen per year, and 5,703 tons of liquid argon per year. The process production facility includes a compression plant, an air separation unit, and a backup liquid storage unit, among others. Utilities and auxiliary facilities include the substations, instrument air compressors stations, and circulating water stations required for the project. Supporting facilities include sewage treatment and reuse systems, pressure pump rooms and fire water tanks, a general warehouse, a chemicals warehouse, a central laboratory, and a central control room.
From May 13th to 16th, 60% of the model review was completed for the technical renovation project of the 39,000 Nm3/h air separation unit at Zhejiang Jinju Chemical Co., Ltd., which was undertaken by Donghua Technology as the general contractor; this marks the successful completion of an important milestone in the project’s engineering design phase. Liu Mingzhe, the project manager of the air separation unit at Zhejiang Jinju Chemical Co., Ltd., along with members of the project team; as well as leaders and expert members from the air separation project team at Donghua Technology and the air separation equipment supplier, Hangzhou Hangyang Co., Ltd., attended the review meeting.