Compact exhaust gas scrubber gets DNV approval
JULY 20, 2012 — A Green Tech Marine GTM R15 compact exhaust gas scrubber recently installed onboard Royal Caribbean International's cruise ship Liberty of the Seas has now received a MARPOL "Statement of Compliance" certificate from DNV.
The measurements of exhaust gas emission and wash water criteria have been shown to be well below the required limits stated in the MEPC guideline 184(59). This will ensure the vessel is compliant with the 0.1 percent sulfur limit that will be required in ECAs from 2015.
Beyond the efficient removal of SOx and other particles, the GTM R15 offers a number of advantages over other scrubbers, such as its minimal footprint requirement and low weight. It is also energy efficient, requiring virtually no external chemicals and allowing for installation during operation.
The GTM R15 that Green Tech Marine and Royal Caribbean are pilot testing was installed onboard Liberty of the Seas while the ship was in service. The compact design required no extra space as the scrubber replaced the ship's exhaust silencer.
Initial testing has been undertaken with the system in full-scale operation and the engine running from 2 to 12.4 MW. The scrubber has produced successful results in both open loop and closed loop using seawater.
Prior to the shipboard pilot, a preliminary scrubber test was performed shore side in Norway for 11 months. After several visits to analyze the scrubber's performance, Royal Caribbean committed to a pilot test.
"The small size and low weight of the scrubber got our attention," said Anders Aasen, Associate Vice President, Global Marine Technical Services at Royal Caribbean Cruises Ltd. "When we saw the initial performance results, we were convinced to launch a full scale trial."
Over the next 4-6 months Green Tech will continue to test the GTM R15 onboard Liberty of the Seas to demonstrate that the scrubber can be operated continuously over a sustained period of time and maintain the same positive results as the initial tests achieved.
（译文参考：船舶管理部 傅恒星编译）
紧凑型废气洗涤塔获DNV认证
2012年7月20日—Green Tech Marine公司开发的一款安装在国际皇家加勒比油轮“Liberty of the Seas”号上的“GTM R15型”紧凑型废气洗涤塔获得来自DNV颁发的MARPOL符合证明。
废气排放措施和洗涤水排放标准已在MEPC guideline 184（59）中明确列出，该装置将确保船舶符合2015年后ECAs区域0.1%含硫量的控制要求。
除了具备去除SOx及其他颗粒等常规功能外，GTM R15还提供很多超越其他洗涤塔的优势，如体积小、重量轻。同时，其效率高，不需要外加化学品并容许船舶营运期间安装设备。
Green Tech Marine和“皇家加勒比”共同组织了GEM R15型洗涤塔在营运中的Liberty of the Seas轮上的实船测试，该紧凑型洗涤塔无需额外安装空间，只需把原废气消音器/火星熄灭器移除，替换为洗涤塔即可。
测试之初，技术人员对设备进行了从2到12.4MW全负荷范围测试，无论是使用开路海水还是闭路海水该洗涤塔处理结果都表明试验很成功。
洗涤塔在实船测试前已在挪威的工厂里进行了11个月的台架测试。测试期间皇家加勒比人员多次到工厂考察，并验证设备使处理效果后决定进行装船试验。
“她的体积小、重量轻引起了我们关注，”皇家加勒比游轮公司的环球海事技术服务副总助理说。“当我们看到她的初始测试结果后，对她启动全负荷范围测试充满信心”
在随后的4-6个月里Green Tech将继续在“自由之海”/Liberty of the Seas测试GTM R15洗涤塔，来证明该洗涤塔能够连续稳定运行，并始终保持刚开始测试时取得的测试结果的那种状态。
