Beikong’s 4 billion cubic meters of coal-to-natural gas project receives environmental approval

Approval granted for Beikong’s 4 billion cubic meter/year coal-to-natural gas project – Author/Source: Date: 2016-04-29; Clicks: 5. On April 27, reports from relevant sources indicated that the environmental impact assessment for Beikong Jingtai Energy Development Co., Ltd.’s project to produce 4 billion cubic meters of natural gas per year from coal had been approved. This is the second coal-to-natural gas project to receive approval from the Ministry of Environmental Protection in 2016. On March 15, 2016, the environmental impact assessment for the demonstration project on the clean utilization of low-metamorphic bituminous coal in Datong, Shanxi, by China National Offshore Oil Corporation was officially approved. On March 28, 2016, the **Ministry of Environmental Protection published a notice regarding the review of the environmental impact assessment documents for the 4 billion cubic meters per year coal-to-natural gas project developed by Inner Mongolia Beikong Jingtai Energy Development Co., Ltd. In May 2015, the **Ministry of Environmental Protection officially accepted the application for environmental impact assessment approval for the 4 billion Nm3/a coal-to-natural gas project developed by Inner Mongolia Beikong Jingtai Energy Development Co., Ltd. In March 2013, Inner Mongolia Beikong Jingtai Energy Development Co., Ltd.’s coal-to-natural gas project with a capacity of 4 billion Nm3/year received approval from the **National Development and Reform Commission (Document No. Nengyuan 664). The environmental impact assessment report for this project indicates that the 4 billion Nm3/year coal-to-natural gas project operated by Inner Mongolia Beikong Jingtai Energy Development Co., Ltd. is located in the western section of the South Industrial Zone in Dali Industrial Park, Zhungeer Banner, Ordos City, Inner Mongolia Autonomous Region, covering an area of 262.17 hectares. This project is a large-scale coal chemical complex funded by Inner Mongolia Beikong Jingtai Energy Development Co., Ltd. at an investment of 28,255,944.43 million yuan. It uses local coal from Ordos as raw material and employs a gasification technology that combines pulverized coal pressurized gasification with crushed coal pressurized gasification. The syngas undergoes conversion and purification processes to achieve the desired hydrogen-to-carbon ratio for synthetic methane; after that, it goes through methanation, initial compression, and dehydration before being sent via natural gas transmission pipelines to end-users. The project has an annual production capacity of 4 billion cubic meters of natural gas, which is primarily supplied to cities in Beijing and its surrounding areas, while also contributing to the replacement of clean energy sources in Zhenggeer Banner. Process plan: http://img.yf116.cn/image/img/20160429/957423586241.jpg Simplified diagram of the main process flow: http://img.yf116.cn/image/img/20160429/959483598822.jpg http://img.yf116.cn/image/img/20160429/100423604262.jpg Process technical plan: This project is a typical large-scale coal chemical project. Based on the analysis of local raw coal samples provided by the owner, since the ash fusion temperature FT is greater than 1470°C, gasification technologies that involve solid slag discharge, such as coal crushing and pressurized fixed-bed gasification, are suitable for this application. However, pressurized gasification of pulverized coal cannot handle the large amounts of pulverized coal generated during coal mining and transportation. Through coal blending experiments on such pulverized coal, experiments to reduce the ash melting point by adding fluxes, as well as measurements of their viscosity-temperature curves, it was shown that using pressurized gasification of dry pulverized coal is economically viable when coal is blended or an appropriate amount of flux is added. Therefore, pressurized gasification of dry pulverized coal becomes the best technical option for dealing with this type of pulverized coal. This project adopts a combined approach of pressurized coal gasification and pressurized dry coal gasification. The fluidized-bed dry coal pressurized gasification technology with a daily coal feed of 4.1 MPa and over 2000 tons, as well as the crushed coal pressurized gasification technology with a daily coal feed of 1750 tons. The pulverized coal gasification plant includes: coal powder preparation, gasification framework, slag water treatment, vacuum filter building, etc. There are a total of 10 gasifiers; the coal feeding rate for each gasifier is around 2000 t/d. The raw gas production rate per gasifier is 283,630.13 Nm3/h (on a wet basis). The coal gasification island includes: coal gasification, coal shift reaction, gas-water separation, phenol and ammonia recovery, etc. 7 in operation and 1 in standby; the coal feeding rate per gasifier is ~1750 t/d, and the raw gas production rate of each gasifier is 166475.69 Nm3/h (on a wet basis). Methane-water separation and phenol-amine recovery employ mature and reliable process technologies. Phenol-amine recovery: Series 1, water treatment capacity 450 t/h. Product solution

The third Suyin New Energy coal-to-natural gas project and Beikong’s project both received environmental impact assessment approvals at the same time.