The Hebi Baofa moving-bed pure-oxygen continuous gasification project will be ready for operation by the end of the month
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The mobile-bed pure-oxygen continuous gasification project at Hebi Baofa will be ready for operation by the end of the month. Author/Source: Gasification World. Date: 2022-03-01. Clicks: 11. On February 7, 2022, the Political Consultative Conference of Shancheng District led a delegation to conduct an inspection at Hebi Baofa. At present, the installation of the main air separation equipment for Hebi Baofa’s moving-bed pure-oxygen continuous gasification project has been completed; the overall progress is nearing completion, and the facility will be ready for operation by the end of this month. The air separation capacity is 30,000 cubic meters of oxygen per hour. The Hebi Baofa moving-bed pure-oxygen continuous gasification project converts the fixed-bed intermittent gasification process into a moving-bed continuous pure-oxygen gasification process. It also involves the construction of an air separation unit to supply oxygen, nitrogen, and instrument air for all the equipment in the plant. Additionally, some modifications are made to processes such as desulfurization, shift reaction, decarburization, and further desulfurization in order to adapt to changes in the composition of the gas feedstock from upstream sources. Project Overview: The Hebi Baofa moving-bed pure-oxygen continuous gasification energy-saving optimization project involves removing 22 fixed-bed batch coal gasifiers and their associated pipelines, and installing 22 new moving-bed pure-oxygen continuous gasifiers, two gas purification lines, as well as an air separation unit capable of producing 30,000 cubic meters of oxygen per hour. In 2011, Hebi Baofa Energy Technology Co., Ltd. launched the \"Energy System Optimization and Energy Saving Project for Hebi Baoma Fertilizer Technology Co., Ltd.\"; through technical upgrades, its methanol production capacity was increased to 400,000 tons per year. In 2013, the company carried out the \"Energy Saving Project for the Circular Utilization of Methanol Off-Gases at Hebi Baoma Fertilizer Factory,\" which resulted in an annual production of 10,000 tons of LNG. That same year, the company acquired Hebi Baoma Fertilizer Technology Co., Ltd., thereby achieving a methanol production capacity of 400,000 tons per year and a dimethyl ether production capacity of 300,000 tons per year, with sulfur and LNG also being produced as by-products. This technical upgrade primarily involves converting the fixed-bed batch gasification unit into a moving-bed continuous pure-oxygen gasification unit. At the same time, an air separation unit will be installed to supply oxygen, nitrogen, and instrument air for all the units in the plant. Some modifications will also be made to processes such as desulfurization, shift reaction, decarburization, and further desulfurization in order to adapt to changes in the composition of the gas feedstock from upstream sources. The total investment for the project is 200 million yuan, with 6.3 million yuan allocated to environmental protection measures.
Based on the actual production conditions of Henan Shunda Chemical Technology Co., Ltd. (now renamed Henan Shunda New Energy Technology Co., Ltd.), this project draws on advanced gasification technologies from both domestic and international sources. Building upon the company’s existing atmospheric-pressure batch moving-bed gasification technology, and through theoretical analysis of the moving-bed gasification process as well as by taking advantage of the features and strengths of advanced large-scale moving-bed and fluidized-bed gasification technologies, various approaches for developing new process flows and equipment designs were identified. Through numerous experiments, the equipment design and the process flow were validated, and various key gasification process parameters were optimized. As a result, a new type of low-pressure moving-bed gasification technology was developed, featuring complete independent intellectual property rights, low investment, high efficiency, a simple process, low residual ash and carbon content, and no wastewater or exhaust gas emissions. Additionally, a high-temperature, non-slag-forming, pure-oxygen continuous gasification technology for moving beds along with the corresponding equipment set (referred to as JH T-G) were developed. This addresses the issues associated with the use of normal-pressure moving-bed gasification technology in coal chemical enterprises, such as high energy consumption, low efficiency, and high pollutant emissions, thereby enabling an upgrade of gasification technology and equipment and enhancing the competitiveness of these enterprises ； At the same time, in line with the requirements of the gas market regarding investment, environmental protection, and scale, a set of coal-based industrial gas technologies and equipment that feature low investment costs, simple processes, and environmental friendliness has been developed. These replace the existing intermittent moving-bed gas generators, serving industries such as glass manufacturing, ceramics, and metallurgy. They help address the prominent issues associated with industrial gas, such as high costs and significant environmental pressures, thereby providing a reliable source of clean energy for the development of these industries. The implementation of the project’s technical achievements is in line with the **energy development strategic goals; the development of this project holds significant scientific importance, practical value, and economic benefits. On October 29, 2017, the China Petroleum and Chemical Industry Federation organized experts in Beijing to conduct an evaluation of the \"Mobile-bed high-temperature slag-free pure oxygen continuous gasification technology (T-G)\” developed by Shunda Company. The evaluation committee concluded that this technological achievement possesses independent intellectual property rights, features low investment costs, a long operational cycle, easy operation, high innovation levels, and broad application prospects. In the field of bituminous coal moving-bed gasification, it has generally reached international advanced levels.