Abstract
This paper examines the GHG emission of industrial process in Shenyang city, in the Liaoning province of China, using the 2006 IPCC greenhouse gas inventory guideline. Results show that the total GHG emissions of industrial process has increased, from 1.48 Mt in 2004 to 4.06 Mt in 2009, except for a little decrease in 2008. The cement industry, and iron and steel industries, are the main emission sources, accounting for more than 90% of the total carbon emissions. GHG emissions in 2020 are estimated based on scenario analysis. The research indicates that the cement industry, and iron and steel industries, will still be the largest emission sources, and the total carbon emissions under the business as usual (BAU) scenario will be doubled in 2020 compared with that of 2009. However, when countermeasures are taken, the GHG emission will reduce significantly. Using more clinker substitutes for blended cement, and increasing direct reduction iron process and recycled steel scraps are efficient measures in reducing GHG emission. Scenario 4, which has the highest ratio of 30/70 blended cement and the highest ratio of steel with recycled steel-EAF process, is the best one. In this scenario, the industrial process GHG emission in 2020 can almost stay the same as that of 2009. From the perspective of regions, cement industry and iron and steel industry accounted for the vast majority of GHG emission in all industries. Meanwhile, these two industries become the most potential industries for reduction of GHG emission. This study provides an insight for GHG emission of different industries at the scale of cities in China.
Highlights
Along with the rapid industrialization and urbanization, China’s high greenhouse gas emissions have become an important issue both domestically and internationally [1,2]
Liaskas et al, used the algebraic disaggregation method to identify the factors influencing CO2 emissions generated in the industrial sector of European Union countries [6], Zhou et al, estimated the carbon footprint of China’s Ammonia production and analyzed the potential for carbon mitigation in the industry [7], Sheinbaum et al, analyzed Energy and CO2 emission trends of Mexico’s iron and steel industry during the period 1970–2006, examining CO2 emissions related to energy use and production process [8]
The paper is structured as follows: first, we give a brief description of the background information of Shenyang city and the industrial process GHG emission; we present the method used to assess the GHG emission of the industrial process; third, we introduce results for the case study of Shenyang city and make a general understanding of current state of industrial process GHG emission from year 2004 to 2009; fourth, we present scenario analysis based on business as usual(BAU) scenario and scenario with countermeasures to predict future industrial process GHG emission of 2020, so that proper scenarios and feasible GHG abating measures could be obtained; and conclusions are drawn
Summary
Along with the rapid industrialization and urbanization, China’s high greenhouse gas emissions have become an important issue both domestically and internationally [1,2]. Since 2003, the central government has implemented the strategy of “revitalizing the old industrial bases in Northeastern China”, and Shenyang was selected as the first city to demonstrate the strategy It aimed to shift the industrial structure by improving resources efficiency and reducing the environmental pressure, later Shenyang was identified as the core of the new-industrialization zone for national demonstration [24]. The new-industrialization zone is mainly composed of equipment manufacturing industry, metallurgical industry, and petrochemical industry, which is taken as typical and representative case in blazing a trail to new industrialization and new urbanization, and expected to offer a demonstration for China’s change in industrial development mode and economic development transformation Under such circumstances, Shenyang’s economy and urbanization will definitely continue to increase rapidly, and industrial sectors of cement, steel and relative material requirement will take an important role
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