The civil engineering work for the technical renovation project of coal gasification at Chongqing Xiangyu Salt Chemicals is in full swing

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The civil engineering work for the coal gasification technology upgrade project at Chongqing Xiangyu Salt Chemical Co., Ltd. has been fully underway. Author/Source: Huahua Network – Coal Chemical Industry. Date: December 14, 2021. Clicks: 5. Recently, Chongqing Xiangyu Salt Chemical Co., Ltd. organized a meeting to advance the progress of this project aimed at upgrading coal gasification technologies for energy savings. To date, the civil construction work for the industrial upgrading projects in various regions has been fully underway. 1. The construction of the main facilities and the foundations of the buildings on site has been largely completed, and the main structural work is progressing in an orderly manner ； 2. Concrete pouring for the EL28.97m layer of the vaporization framework completed ； 3. Completion of concrete pouring from the base of slurry preparation up to the EL8.97m level ； 4. Completion of concrete pouring for the roof slab of the fire accident pool, followed by wet curing ； 5. Completion of the main structure of the central laboratory ； 6. The foundation work for the central control room and the maintenance plant has been completed, and the construction of their upper structural components is currently in progress ； 7. The pouring of the underground pool in the cooling tower of the circulating water station is complete; construction of the upper structure is currently in progress ； 8. In the ammonia synthesis area, the freezing framework, combined compression plant, synthesis tower, and internal utility corridors have had their foundations completed; work is currently underway on the upper structure ； 9. The purification unit as a whole enters the construction phase of the superstructure. Construction of the upper structure for Layer 1 is being carried out using Frame No. 1 for acid treatment; Frame No. 2 for acid treatment has already completed the construction of the main structure for Layer 2. The transformation frame has entered the stage of erecting scaffolding for Layer 1. The sulfur shaping unit has completed the construction of the main structure for Layer 1, while the liquid nitrogen washing frame, sulfur recovery frame, and methanol storage tank are currently undergoing upper structure construction ； 10. The foundations for the ground equipment of the air separation unit have been completed; the construction of the upper structure for the air separation compression building and the compressors is in progress ； 11. 50% of the foundation trench excavation and cushion pouring for the external pipe gallery have been completed ； 12. The gravity retaining walls in sections B2-B4 on the southeast side have been completed. The gasification energy-saving technology upgrade project of Chongqing Xiangyu Salt Chemical Co., Ltd. is located at plot B10-05/04 in the Longbao Tuantuan IV management unit of Chongqing Wanzhou Salt-Gas Chemical Park (an open area to the south of the company’s existing factory). An investment of 1.5 billion yuan will be made to upgrade the existing gasification facilities in this open area to the south of the factory; the project will utilize two Jinhua furnaces, with a gasification pressure of 6.5 MPaG and a total gas flow rate of 80,000 Nm3/h (CO+H2), thereby replacing the current atmospheric-pressure fixed-bed gasification system. The project is under the EPC general contracting of China Fifth Ring Engineering Co., Ltd. New units for coal grinding and slurry preparation, gasification, shift reaction, low-temperature methanol washing, liquid nitrogen washing, ammonia synthesis, and sulfur recovery are to be constructed, while an air separation unit will be built using the existing plant area. Following the completion of these upgrades, the total annual capacity for ammonia synthesis will increase from 200,000 tons to 300,000 tons.