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Commencement of Donghua Technology’s Anhui Carbonxin Coking Gas Comprehensive Utilization Project / Author/Source: Coal Chemical Industry 114 Forum Date: June 26, 2020 Clicks: 64 On the morning of June 22, firecrackers were set off at the construction site of Donghua Technology’s Anhui Carbonxin Coking Gas Comprehensive Utilization Project; under the supervision of the project owner, supervisors, subcontractors, and other specialized contractors, the construction of the deep foundation pit for the project’s coal unloading system was successfully launched. It is reported that this deep foundation pit project covers multiple areas including the car turnover garage, 1# underground corridor, 1# transfer station, and 2# underground corridor. Located outside the site, the maximum digging depth is nearly 22 meters; it constitutes a highly dangerous construction project, presenting challenges in terms of construction coordination and management, as well as complex construction tasks and a long construction period. In order to address potential challenges during construction in advance and start work as soon as possible, Donghua Technology’s project team carried out thorough planning in areas such as foundation pit support design, construction safety measures, resource allocation, construction drainage, schedule targets, and emergency response plans. As a result, the plan was successfully approved at the expert review meeting on June 11th. On April 23, the pile foundation work for the Anhui Carbonxin Coke Oven Gas Comprehensive Utilization Project, which is under the general contracting of Donghua Technology, was completed. This represents another significant milestone in accelerating the project timeline, and it lays the foundation for the timely delivery of the project. It is reported that the pile foundation works for this project include 530 bored cast-in-place piles and 880 CFG piles. Due to the complex local geological conditions, the maximum diameter of the piles is 1.2 meters, and the maximum length of the pile shafts is 45 meters. At 9 a.m. on March 20, the gasification unit was successfully put into operation. The gasification unit is the core process equipment of the project, utilizing coal powder gasification technology. The main sections include coal grinding and drying, pressurized transportation of coal powder, gasification, and black water treatment. Its main framework is divided into two main parts: a lower concrete section and an upper steel structure, reaching a height of 93.5 meters. The high construction difficulty and long duration constitute the critical path of the entire project. At 9 a.m. on March 16, the construction of the plant’s comprehensive pipeline system began on site. On August 27, 2019, Donghua Engineering Technology Co., Ltd. signed an EPC general contract for a project aimed at the comprehensive utilization of coke oven gas with Anhui Carbonxin Technology Co., Ltd.; the value of the contract was 1.367 billion yuan. The scope of the contract includes a turnkey EPC project covering the 2,000 tons/day powder gasification unit, the 500,000 tons/year methanol synthesis unit, as well as related auxiliary facilities. The Anhui Carbonxin project to produce 500,000 tons of methanol from coker gas aims to utilize the hydrogen-rich off-gases from the existing two 400,000-ton methanol production units at Linhuan Coking. A new gasifier with a coal feeding capacity of 2,000 tons per day will be installed to supply carbon for the production process, thereby yielding 500,000 tons of methanol annually. In the end, the production capacity will reach 900,000 tons per year, and this methanol will serve as raw material for extending the downstream olefin industry chain in Anhui (Huaibei)’s new coal chemical synthesis materials base. Huaibei Mining Co., Ltd. is a large state-owned enterprise specialized in coal mining and related comprehensive utilization activities. In line with the Huaibei Mining Group’s development strategy of \"relying on coal, expanding beyond coal, and going beyond coal,\" Huaibei Mining has carried out \"integrated\" upgrades and expansions of Linhuan Coking Co., Ltd. It has also made efforts to establish Anhui Carbonxin Technology Co., Ltd., which is one of the key projects in Anhui Province aimed at restructuring the economy and addressing existing weaknesses. This company serves as a cornerstone project for Huaibei City’s effort to develop a carbon-based new materials industry worth over 100 billion yuan. It not only has the potential to become a new important source of economic growth for Huaibei Mining but also holds great significance for implementing the \"China Carbon Valley • Green Gold Huaibei\" strategy, as well as for helping Anhui Province to restructure its economy, change its development model, and achieve further progress.