The 2nd International Conference on Environment Resources and Energy Engineering

Oral presentation

Fuying Chen

Huazhong University of Science and Technology,China

Speech Title: Evaluation of concentrated solar power potential based on GIS in China

Abstract: Compared with solar photovoltaics, wind power, and other power technologies with strong output fluctuation, concentrating solar power (CSP) technology with storage has higher stability and can match peak demand in power systems. CSP could play an important role in carbon neutrality pathway worldwide. Actions in China is decisive. Few previous studies have estimated CSP technology’s power generation and CO2 emission reduction potentials in China, which may impede appropriate policy formulation for the national deployment of CSP. To address this knowledge gap, the geographical, technical, and CO2 emission reduction potential of CSP in China was evaluated by province based on a geographical information system, considering geographic and technical constraints. Exclusion criteria including solar radiation, slope, land-use type, natural reserve, and water resources were adopted to determine the suitability of CSP plant construction. The results show that approximately 1.02 × 106 km2 of land is available to support CSP development in China, accounting for approximately 11% of China’s land area. Based on the available solar resource on the suitable land, the geographical potential is 2.13 × 1015 kWh. The potential installed capacity is 2.45 × 107–5.40 × 107 MW, considering four CSP technologies. The corresponding annual energy generation potential is 6.46 × 1013–1.85 × 1014 kWh, which is 8.91‒25.52 times the national electricity consumption in 2019. Considering the scenario of using the potential of CSP to replace the current power supply to the maximum extent, CO2 emission would have been reduced by 5.19 × 108, 5.61 × 108, and 6.24 × 108 t in 2017, 2018, and 2019, respectively. At the provincial level, more than 99% of China’s technical potential is concentrated in five western provinces, including Xinjiang (42.06%), Inner Mongolia (18.44%), Qinghai (14.29%), Gansu (9.94%), and Tibet (14.95%). These results provide policy guidance and serve as a reference for the future development of CSP and site selection for CSP plant construction both in China and all over the world.

Zhuoyuan Chen

Huazhong University of Science and Technology,China

Speech Title: Pyrolysis characteristics of waste tire and sulfur migration and transformation mechanism

Abstract:Waste tire pyrolysis technology is a means of efficient resource utilization,, and a large amount of vulcanizing agents are added in the tire production process in order to improve its wear resistance. Different pyrolysis parameters will bring differences in sulfur-containing substances and characteristics in three-state products. Therefore, in this work, the pyrolysis characteristics of pyrolysis waste tires and the migration and transformation mechanism of sulfur will be deeply studied in order to provide a theoretical basis for the pyrolysis of waste tires to produce high-value and low pollution products.The results show that the retention rate of sulfur is 52.87% in solid phase, 41.84% in liquid phase and only 5.29% in gas phase at the pyrolysis temperature of 400℃. With the increase of pyrolysis temperature from 400℃ to 800℃, the retention of sulfur in solid phase firstly decreased to 46.84%, and then gradually increased to 50.35%. Thiophene sulfur and aliphatic sulfur were gradually transformed into sulfate, sulfoxide and sulfone sulfur; The retention of sulfur in the liquid phase first increased to 47.81% and then decreased to 39.25%, reaching the maximum value at 500℃. The sulfur forms were mainly benzothiophene, benzothiophene, 4,4' -bis (tetrahydrothians). The retention rate of sulfur in the gas phase increases to 10.41%, and sulfur mainly exists in the form of H2S and COS.