[Haichuan Chemical Salary Updates] Construction of underground pipeline network begins for the pyrolysis phase of Shaanxi Coal Yulin’s 15 million tons/year coal valorization demonstration project
Thread Content
Full-scale construction begins! The construction of the largest coal chemical project to date, worth 126.2 billion yuan, has begun – the underground pipeline construction for the pyrolysis phase of this project was launched on April 15. A ceremony was held to mark the start of this work on the Shaanxi Coal Group Yulin Chemical’s demonstration project for the production of new chemical materials through the selective utilization of coal at a rate of 15 million tons per year.
The underground pipeline network works for this project were subcontracted to China Chemical Engineering Second Construction Co., Ltd.; they include fire protection water pipelines, domestic water supply pipelines, circulating water pipelines, reclaimed water pipelines, rainwater pipelines, industrial wastewater pipelines, domestic sewage pipelines, and high-pressure industrial water pipelines, with pipe sizes ranging from DN50mm to DN1000mm. The pipeline length is 11,925 meters, of which 10,867 meters are steel pipes and 1,058 meters are plastic pipes. Approximately 200,000 cubic meters of earthwork need to be removed, with a construction period of 45 days.
The soil is loess and sandy soil, making it easy to excavate
On the 15th of the month, the groundbreaking ceremony was held for the EPCO turnkey project related to the sewage treatment plant, recycled water station, and advanced sewage treatment facilities as part of Shaanxi Coal Group Yulin Chemical Company’s demonstration project on the utilization of coal in various ways to produce new chemical materials. Previously, the groundbreaking ceremonies for the EPC general contracting projects of the syngas purification unit and air separation unit for the first phase of this project, which involves 1.8 million tons of ethylene glycol per year, were held on April 2 and April 8 respectively. From then on, the construction of the project officially commenced.
The first batch of pipeline materials for the dimethyl oxalate and ethylene glycol plants arrived successfully. On April 10, the first batch of pipeline materials for Shaanxi Coal Yulin Chemical’s 1.8 million tons per year coal-based ethylene glycol, dimethyl oxalate, and ethylene glycol plants arrived on schedule. The total length of the pipelines for the dimethyl oxalate and ethylene glycol plants is approximately 33 kilometers, with completion of construction scheduled for July 10, 2020. The device was designed, purchased, and constructed by Donghua Engineering Technology Co., Ltd. The PC general contracting for the dimethyl oxalate and ethylene glycol plant project is undertaken by Donghua Engineering Technology Co., Ltd., with a total cost of 3.818 billion yuan.
Do you know what kind of underground pipe this is?
The first phase of the Yulin Chemical Coal Quality-Based Utilization Project for the production of new chemical materials, which involves an annual production capacity of 1.8 million tons of ethylene glycol, includes facilities for the production of dimethyl oxalate and ethylene glycol as well as related supporting systems. This plant utilizes the process technology for converting dimethyl oxalate into ethylene glycol through hydrogenation, a technology developed through collaboration between High Chemical Co., Ltd., Donghua Engineering Technology Co., Ltd., and other companies. The entire facility is divided into three series: there are 9 sets for the synthesis of dimethyl oxalate, with each set capable of producing 420,000 tons of DMO per year ； 3 sets of dimethyl oxalate distillation units, with each unit capable of producing 1.26 million tons of DMO per year ； 3 sets for ethylene glycol production, with 600,000 tons of EG per set per year ； 3 sets of ethylene glycol distillation units, with each unit capable of producing 600,000 tons of EG per year.
Construction began on the central control building, main substation, and plant-wide utility tunnels for the auxiliary facilities of Shaanxi Coal Yulin Chemical’s 1.8 million tons per year coal-based ethylene glycol production facility. On April 10, an inauguration ceremony was held for these projects. The Public Utility and Auxiliary Engineering Project Department is responsible for the construction of 42 major items related to the plant’s public utilities, auxiliary facilities, and storage and transportation systems for Yulin Chemical’s 1.8 million tons per year ethylene glycol production project. The general contracting work for the design, procurement, and construction of 39 of these major items is carried out by China Global Engineering Co., Ltd., with the goal of completing the intermediate handover of all these projects by May 30, 2021. The scope of the global EPC general contracting includes Work Packages 1, 2, and 3 of EPCm general contracting projects such as plant-wide works, utility systems, auxiliary facilities, and storage and transportation facilities; in addition, it covers the detailed design and technical services for supporting facilities including temporary accident wastewater storage tanks, production office buildings, analysis and testing centers, maintenance centers, auxiliary material storage facilities, and Fire Station No. 1. The contract value is approximately 3.756 billion yuan.
Claiming to complete the entire plant’s underground pipeline network in 45 days is a bit exaggerated.