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首页> 外文会议>International Conference on Greenhouse Gas Control Technologies >ECONOMIC AND EMISSION ACCOUNTING FOR ACID-GAS INJECTION PROJECTS - AN EXAMPLE FROM KEYSPAN BRAZEAU RIVER, ALBERTA, CANADA
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ECONOMIC AND EMISSION ACCOUNTING FOR ACID-GAS INJECTION PROJECTS - AN EXAMPLE FROM KEYSPAN BRAZEAU RIVER, ALBERTA, CANADA

机译：酸性气体注入项目的经济和排放核算 - 凯斯潘广河，艾伯塔省，加拿大的一个例子

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The Brazeau River gas plant is located about 250 km southwest of the City of Edmonton and within the Lower Foothills of the North Eastern Slopes of the Rocky Mountains. The original plant was constructed and commissioned in 1969, to treat sour gas and recover sulphur. The plant was equipped with two Claus units with a combined licensed plant capacity of 119.7 tonnes per day (t/d) of sulphur in the feed gas, with a minimum sulphur recovery requirement of 92.1%. In a plant capacity review in 2000, KeySpan Energy Canada found that there was an opportunity to process additional sour gas from other pools in the area. An increase in the sour-gas handling capacity at the Brazeau facility using conventional Claus technology would require significant capital expenditures to upgrade the plant. A Claus plant sized to treat 400 t/d of sulphur (to match the planned sour-gas throughput) would be required to operate at over 98.4% sulphur recovery, by Alberta regulations. This would still result in about 12.8 t/d of SO_2 emitted to the atmosphere. Essentially all of the CO_2 separated from the natural gas and all of the CO_2 produced from fuel gas consumed by the Claus plant would be emitted into the atmosphere. Another option would be to inject the acid gas (CO_2 and H_2S) into the Nisku Q Pool, a depleted gas reservoir. This paper compares the economic merits and emission characteristics (on a life cycle basis) of the two options. The injection of acid gas into a depleted gas reservoir would eliminate SO_2 emissions at the plant site, increase plant efficiency, lower capital and life-cycle costs, extend plant life and employment and reduce emission of greenhouse gases. Based on an acid-gas composition of 80% H_2S, 17.73% CO_2 with the remaining being methane, ethane and water moisture and a throughput of 126.1 10~6 Sm~3 per year, the acid-gas injection option would result in a life cycle CO_2 and sulphur emissions of 22,000 t/year CO_2 equivalent and 126 t/year sulphur equivalent (252 t SO_2 e/year) respectively. Alternatively, the Claus plant upgrade and expansion option would show a life cycle CO_2 and sulphur emissions of 80,600 t/year of CO_2 equivalent and 1,850 t/year sulphur equivalent (3,700 t SO_2 e/year), respectively. This demonstrates the superior environmental performance of acid-gas injection. The Brazeau River acid-gas injection Project is another milestone for KeySpan Energy Canada in that it effectively deals with the proactive de-grandfathering of sulphur recovery gas plants (meeting the higher Alberta Sulphur Recovery Guidelines that the plant was originally exempt from) and reduction of greenhouse gas emissions.
机译：该布拉佐河天然气厂位于大约埃德蒙顿市的250公里西南和落基山脉的东北坡的下山麓之内。原植物构建并在1969年的委托，以治疗酸气和回收硫。该工厂配备有两个克劳斯单位的进料气体中的硫每天119.7吨量（t / d）的组合许可工厂的生产能力，以92.1％的最小硫回收要求。在2000年工厂的生产能力审核，KEYSPAN能源加拿大发现有来自该地区的其他池处理其它的酸气的机会。在使用传统的克劳斯技术将需要显著的资本支出到工厂升级布拉佐设施的酸气处理能力的增加。克劳斯装置尺寸以治疗400吨/ d硫的（对计划酸气体可以通过匹配）将需要在超过98.4％的硫回收操作，由阿尔伯塔法规。这将仍然导致约12.8吨二氧化硫的/ d排放到大气中。基本上所有的CO_2的从天然气中分离和所有从克劳斯装置消耗的燃料气体所产生的CO_2将被排放到大气中。另一种选择是注入酸性气体（CO_2和硫化氢）插入尼斯库Q普尔，耗尽的气体贮存器。本文比较的两个选项的经济价值和排放特性（生命周期的基础上）。酸性气体注入到耗尽的气体贮存器将消除在厂区，增加植物的效率，更低的资本和寿命周期成本二氧化硫排放，延长植物生命和就业和减少温室气体的排放。基于80％的硫化氢的酸性气体成分，17.73％，其余为甲烷，乙烷和水的水分和吞吐量126.1 CO_2 10〜6的Sm〜3每年，酸气体注入选项将导致生活周期CO_2和22,000吨/年CO_2当量和126吨/年的分别硫当量（252吨SO_2 E /年）硫排放量。可替代地，克劳斯装置的升级和扩充选项将显示的80600吨/ CO_2的年等效和1850吨/年硫当量（3700吨SO_2 E /年）生命周期CO_2和硫排放，分别。这表明酸性气体喷射的优越环境性能。该布拉佐河酸性气体注入项目是KEYSPAN能源加拿大的又一个里程碑，因为它有效地与主动去溯往基硫回收燃气发电厂（满足更高阿尔伯塔硫磺回收指引，该工厂最初是从免除）和减少交易温室气体排放。

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