Daily Question 2015.8.26 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question)
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This post was last edited by Zhang Xiaopeng on 2015-8-27 at 09:35. For a coal-based olefins project with an annual production capacity of 700,000 tons, the annual fresh water consumption is 5.12 million tons. Assuming two circulating water systems with a total capacity of 46,000 m3/h, the clean production indicators that can be estimated based on the above information are ( ). A. Indirect circulating cooling water recycling rate; B. Fresh water consumption per unit of olefins produced; C. Waste water discharge per unit of product; D. Water consumption per 10,000 yuan of output value. The correct answer is B. Explanation: According to page 348 of the technical methods textbook, the indicators for evaluating resource and energy utilization in clean production include three categories: material consumption indicators, energy consumption indicators, and fresh water consumption indicators. (1) New water consumption index. ①Water consumption per unit of product = Annual fresh water usage / Product output ② Recycled water consumption per unit of product = Annual recycled water volume / Product output
Fresh water consumption for olefin products in Unit B
Fresh water consumption for olefin products in Unit B
Fresh water consumption for olefin products in Unit B
B: Fresh water consumption per unit of olefin product
For a 700,000 tons/year coal-based olefins project with an annual fresh water consumption of 5.12 million tons, and assuming two circulating water systems with a total capacity of 46,000 m3/h, the clean production indicator that can be estimated using this information is (B. fresh water consumption per unit of olefins produced).
Fresh water consumption for olefin products in Unit B
Fresh water consumption for olefin products in Unit B
The answer should be: Fresh water consumption for olefin products at Unit B
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