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On the development of IGCC coal gasification units

Thus improve the hair on the development of Phase 2 IC. CC of 17 coal gasification power plant efficiency. 2000 tons of coal a / Et the Shell gasifier with three O3800mm need the oxygen of a CO2 drying furnace, furnace capacity of 500 tons of coal each / Et, furnace gas production is about three 135000Nm3 / h (dry gas ), gas composition C0237.2%, CO32.9%,[link widoczny dla zalogowanych], H221.3%, CH47.6%, CH0.2%, N20.3%, there are still 15% to 20% of the water vapor. Heat value of dry gas lO050kJ/Nm3. At the same 160000Nm3 / h of the Shell gas mixture, the thermal value of up to 10820kJ/Nm3, makes the system's net generating capacity to 510MW, the power generation efficiency is expected to reach 43%. Co2 instead of using steam gasification with steam gasification process and the principle is basically the same, but the need to use polyethylene glycol dimethyl ether method (NHD method) desulfurization, and also take off some CO2 and then returned to the compressor to C02 gasifier for gasification, so the formation of CO2 cycle. CO2-gasification and desulphurization and de-CO: the technology is mature, its technology and equipment can be resolved internally. 5.3 Entrained Bed Gasifier and BG / L will be a combination of liquid slag furnace Shell gasifier with BG / L solution combination in the furnace slag is the best combination of IGCC power generation. Since BG / L solution of the gasification furnace slag, high efficiency, low consumption of steam, oxygen consumption is low,[link widoczny dla zalogowanych], a high calorific value gas, gasifier gasification capacity, used in IGCC power generation is more favorable. The gas composition is: CO58.1%, H227.2%, CI-I46.8%,[link widoczny dla zalogowanych], CH0.7%, CO22.9%, N23.9%, other 0.4%, and the moisture content is very low. Dry gas calorific value of approximately 14000kJ/Nm3. A 2000 ton coal / day to be with Shell gasifier capacity of 500 tons of coal 4 / 13, diameter of 2.4m of the BG / L furnace, gas furnace gas two each for 160 (ONm3 / h or so, mixture is 320000-330000Nm3 / h. of the heat value of mixed gas 12700kJ/Nm3, combined system could reach 650MW generating capacity over the net electrical efficiency of more than 45%. the BG / L liquid residue gas furnace and air bed furnace combination, used in IGCC power generation project is the most reasonable one of the most economical solution, but the program is currently not in place the conditions for the establishment of demonstration devices. Since the construction of foreign yet to BG / L liquid slag furnace model for IGCC power generation items, must develop their own domestic BG / L liquid slag furnace, this will take a long time and human resources. Yunnan People's Liberation Army planned fertilizer plant on the basis of the existing development of chewing furnace BG / L liquid slag furnace, is a worthy parties support the initiative. Because the plant is rich in dried ash furnace Lu operations management experience and more than one surplus O2.6ml ~ rgi dry ash furnace used for transformation test, then the technology used in the blast furnace experimentation (BG / L technology and iron smelting technology is very similar), I believe that an early success. 6 implementation of the observations (1) digestion and absorption of the introduction of the Shell gasification technology to maximize the proportion of domestic production; (2) further development \multi-nozzle water slurry gasification technology for home-style \Lurgi gas test, and obtain the relevant parameters and design data; (4) 2.8m or 3.8 in the existing furnace with air or oxygen to a gasification agent CO2 gasification test, and obtain the operational parameters and design data; (5) the success of the trial in the above (including BG / L liquid slag furnace) and obtain the design data, can be commercial demonstration plant design and construction work. 7 Conclusion power as soon as possible to ICCC technology for industrial mass production in China, should pay attention to digestion and absorption of foreign advanced technology, but also with national conditions and development of technologies with independent intellectual property rights. will be entrained bed gasification furnace combination with IGCC power generation, is a mature technology and the use of difficult to develop small application projects. The project has a wide adaptability to the characteristics of coal,[link widoczny dla zalogowanych], which can make full use of local coal resources to make gasification efficiency and carbon conversion rate can be increased and the net power generation efficiency to 45% . devices greatly reduce the ratio of investment, so that the environmental effects of IGCC power generation technology not only good but also significantly reduce production costs for the development of China's coal business and contribute to environment protection and energy.
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