首页 油气 GTT 介绍LNG储存系统的未来,11月上海将进一步交流

GTT 介绍LNG储存系统的未来,11月上海将进一步交流

近日,GTT公司陈晓贤先生介绍GTT陆上薄膜型全容罐技术,并就媒体报道接受了专访。 第五届2022年LNG动力船和LNG技术装备上海峰会将于11月15-16日举办 上海交大LNG中…

近日,GTT公司陈晓贤先生介绍GTT陆上薄膜型全容罐技术,并就媒体报道接受了专访。

上海交大LNG中心研习发证:LNG加注及LNG设备和材料国产化研习通知

2022年绿色船舶技术应用创新上海国际峰会将于12月5-6日举办

“环境保护贡献奖“授予运用到液化天然气(LNG)接收站,对环境保护减少碳排放有杰出贡献的产品或技术。2022年,该奖项的金奖授予了法国Gaztransport & Technigaz(GTT)开发的专用于陆上低温储存的GST薄膜型全容罐储存系统。

The gold Global Tank Storage Award for Environmental Performance is awarded ‘to the product or technology that serves to protect the environment and/or reduce emissions at the terminal.’ In 2022, this award went to the GST membrane full containment system dedicated to onshore cryogenic storage developed by Gaztransport & Technigaz (GTT).

“GTT公司和GST薄膜型全容罐技术能够获得壳牌公司、英国石油、孚宝集团和英力士集团等液化天然气行业知名评委的关注和认可,是非常高的荣誉。GTT中国区业务发展经理陈晓贤先生表示,获得金牌奖项进一步促进GTT公司继续优化我们的技术,为行业提供更低碳、更有性价比和竞争力的低温储存系统解决方案。

‘It is a great honour for GTT and GST membrane full containment technology to be recognised and accepted by prestigious judges from the likes of Shell, BP, Vopak and Ineos in the LNG industry. Winning the gold also encourages GTT to continue optimisation of our technology offering industry a more environmentally friendly, competitive and attractive solution in terms of cryogenic storage tanks,’ says GTT’s business development manager Edward CHEN.

什么是“GST”?

WHAT IS GST?

GST技术是GTT公司为陆上低温储存系统解决方案开发的。GST薄膜型全容罐由1.2 mm的304L不锈钢波纹板作为主屏蔽。波纹“结节”结构能够双向吸收低温LNG引起的钢板收缩,并吸收温度变化引起的应力。主屏蔽膜系统由预制的金属波纹板互相搭接并焊接到绝缘板上的金属锚固条或锚固片上。绝缘板的厚度可根据客户要求的日蒸发率进行设计,通常大型储罐日蒸发率每天0.05%。

GTT developed GST technology for onshore cryogenic storage. The GST membrane full containment system consists of a corrugated stainless steel membrane (304L) with a thickness of 1.2 mm, which serves as the primary membrane. The double network of corrugation absorbs the thermal contractions in both directions from the low temperature LNG, making it resistant to thermal loads. This primary membrane is made from prefabricated membrane sheets, which are welded onto the insulating panels and lap-welded over each other. The insulating panels can be tailored to a customer’s needs for boil-off rates, which is typically 0.05% per day.

绝缘板可以承重,并可以将内部荷载传递到外罐混凝土,从而为内部和外部荷载提供结构阻力。外罐混凝土的内壁涂有防潮层,防止外部水分进入储罐。GST储罐系统还包括规范要求的热角保护系统。该热角保护系统是一层粘接在绝缘板间或绝缘板上的复合材料,防止泄露低温液体泄漏到绝热层(内罐主屏蔽膜泄露)。

The insulation panels are load bearing and can transfer internal loads to the outer concrete container, which provides the structural resistance to internal and external loads. On its inner side, the concrete container has a moisture barrier to prevent moisture from entering the tank. The GST system also includes thermal corner protection, as required by industrial standards, consisting of a composite material bonded on and in between the insulation panels to prevent liquid getting into the insulation (membrane failure).

GST薄膜型全容罐设计在发生泄漏的情况下同时具备液体密封性和气体密封性的功能,并具有连续甲烷气体检测功能,以监测从主屏蔽膜到绝热空间的最小泄漏。这确保薄膜型全容罐运行的可靠性和安全性。

GST tanks are designed to be liquid- and gas-tight in the case of a leak, and have continuous methane detection to monitor even the smallest of leakages from the primary barrier into the insulation space. This ensures high reliability and safe operation in service.

陈先生表示:“陆上液化天然气储罐正在向大型化发展,以增加储存容量和减少投资成本。GST薄膜型全容罐技术的内罐围护系统理论上没有容积上线,其大型化以后具有更大的投资成本优势。”

‘Onshore LNG tanks are being planned with increasing storage capacity to benefit storage demand and investment cost while GST membrane technology can be safely applied with no theoretical restrictions on the volume and is cost effective,’ Chen says.

薄膜结构的优势

THE ADVANTAGES OF MEMBRANES

9%镍钢全容罐和薄膜型全容罐的安全等级在行业内被认为是等同的,代表了安全最高等级。两种技术在正常操作条件下,都包含了液体密封和气体密封功能。同时,陈先生解释说,GST薄膜型全容罐技术比9%镍钢全容罐技术具有许多其他优势。

As far as safety goes, both 9% nickel steel full containment tanks and membrane full containment tanks are considered equal in industry, forming the gold standard. Both contain liquid and vapor barriers under ordinary operating conditions. However, Chen explains that GST membrane technology specifically has a number of other benefits over 9% nickel steel tanks.

GST薄膜型全容罐技术设计灵活,其设计基于标准模块化组件,可以适应各种储罐类型和罐容,而无需对设计进行任何重大更改。该主屏蔽膜本身起到了一个内在的安全保护系统,可防止液化天然气泄漏。与9%镍钢全容罐的内罐不同,薄膜内罐主屏薄膜不会收到较高的应力。因此,即使主屏蔽膜损坏,也只会使得LNG缓慢泄漏到绝热空间,并会在氮气吹扫过程中在绝热空间检测到。

The design is flexible as it is based on standard modular components, so can be adapted for every structure without any major changes in design. The membrane represents an inherently safe system to prevent LNG leakage. It is not highly stressed, unlike the inner tanks of nickel steel tanks, so a failure of the membrane will result only in a slow leakage of LNG into the insulation space, which will be detected in the nitrogen purge stream.

薄膜罐技术更适用于地震烈度高的区域,薄膜罐可以将地震力转移到混凝土外罐,从而防止储罐整体滑动。9%镍钢全容罐独立内罐的钢板结构,会增加压缩屈曲应力。GST薄膜罐系统的混凝土外罐也更能抵抗海啸。

The robust technology is suitable for seismic areas, as the forces created by seismic activity are transferred to the outer concrete shell, preventing sliding. The thin wall of the inner tank of a nickel steel tank is prone to uplift, increasing compressive buckling stresses. The concrete outer tank of the GST system is also more resistant to tsunami waves.

由于使用大量的模块预制件,GST薄膜罐的施工更简单,现场所需的专业劳动力更少。这些模块预制件需要放置在现场,只有不锈钢板需要现场焊接。大部分焊接都是自动化的。对于9%镍钢罐,现场焊接较厚的9%镍钢板需要专业的焊接资质。

Construction of GST membrane tanks is also simpler, with much less specialized labor required on site, due to the use of prefabricated components. These components need to be placed onsite and only the stainless-steel liner must be welded. Much of the welding has been automated. Welding thick nickel steel plates onsite, on the other hand, requires a specialist welding qualification.

“绝缘板和波纹板的工厂预制可以大幅减少现场的施工,提高生产率、施工质量、以及降低劳动力成本,从而整体降低建设成本。“简化的模块化技术、围护系统的工厂预制以及施工安装的简便性,使得GST薄膜型全容罐较9%镍钢全容罐具有建设成本低和工期短的优势”。

‘Offsite manufacture of insulation panels and membrane fabrication can significantly reduce on-site manhours, resulting in higher productivities, higher quality, and reduced labor rates, leading to an overall reduction in unit costs. The simplified modular technology, the industrial prefabrication of the containment elements, and the easiness of the erection make the GST membrane system cost-competitive and schedule effective, compared to 9% nickel full containment,’ says CHEN.

陈先生还补充道:“由于薄膜罐不受温度剧烈变化的限制,因此给业主和储罐运营提供了储罐停运、开罐并进行储罐内部检查的可能性,无任何风险。”

He adds: ‘Membrane technology also offers operators the possibility to decommission, open and inspect tank inside with no risk if needed, due to unlimited thermal cycle performance.’

脱颖而出

STANDING OUT

陈先生认为,此次奖项的专业评委们一定注意到了,与传统的9%镍钢全容罐技术相比,GST薄膜型全容罐对环境保护贡献较大,对环境污染影响较小。GTT公司使用欧盟委员会联合研究中心(JRC)定义的衡量指标,称为“平均世界公民当量单位”。该衡量指标考虑了包括碳排放、使用的化石资源、颗粒物排放、用水以及矿物和金属资源消耗在内的各个方面。一座220,000 m3 GST液化天然气陆上薄膜型全容罐指标分为2029。同一储存容积相比,9%镍钢全容罐的指标分为2636。薄膜型全容罐较9%镍钢全容罐的碳排放减少27%。

CHEN believes that the Awards judges noted the lower environmental impact of a GST tank compared to a conventional 9% nickel steel full containment LNG tank. GTT uses a unit defined by the European Commission’s Joint Research Centre (JRC) know as the ‘Average World Citizen Equivalent Unit’. This unit takes into account various aspects including carbon emissions, fossil resources used, particulate matter emissions, water used, and mineral and metal resource depletion. A 220,000 m3 GST LNG onshore tank scores 2029 Average World Citizen Equivalent Units. The same tank in 9% nickel steel scores 2636 Average World Citizen Equivalent Units, 27% higher.

因此,GST薄膜型全容罐较其他储罐形式,更是一种可持续发展的液化天然气陆地储存系统。

Overall, this makes GST a more sustainable LNG land storage system than other systems available.

不仅如此,GTT陆地薄膜技术近几年来还被用于许多重大项目,包括在中国建设的北京燃气天津南港液化天然气接收站项目中的8座22万方LNG陆上薄膜型全容罐。俄罗斯诺瓦泰克石油公司北极液化天然气二期项目中的3座22.9万方LNG重力式沉箱( GBS)储存系统。以及,在中国华港燃气河间LNG调峰站的一座2.9万方LNG陆上薄膜型全容罐。

Not only that, but the technology has recently been chosen for a number of major projects, including eight 220,000 m3 above-ground LNG tanks for Beijing Gas Tianjin South Port LNG Terminal in China, three 229,000 m3 tanks at Novatek Arctic LNG-2 GBS in Russia, and one 29,000 m3 above-ground LNG tank for Huagang Gas Hejian Peak-shaving Station in China.

“由于最先进的陆地薄膜技术已被大多数石油天然气巨头和大型燃气公司所接受,低温储罐的市场有望开始重塑,从而推动进一步低温储罐技术的创新和优化,降低液化天然气储罐投资的成本和建设周期,以及降低施工建造和运行的碳排放。” 陈先生阐述到。

‘As the state-of-art membrane technology has been accepted by most oil and gas majors and large utility companies, it is likely to reshape the cryogenic tank market – volume and technology wise – thereby driving further innovation and optimisation, which can lead to reductions in unit costs and schedules for LNG storage tanks and also to lower carbon footprint,’ says CHEN.

项目进展和技术发展

BUILDING PROJECTS AND DEVELOPMENT

GST陆地薄膜技术来源于GTT公司的液化天然气运输船Mark III围护系统薄膜技术。GTT公司早在20世纪70年代在法国首先建造了存储乙烯的陆上薄膜罐,这些储罐仍在商业运营。继而GTT公司于20世纪80年代开发了储存LNG液化天然气的陆地薄膜罐技术。当时,GTT公司为法国蒙托瓦LNG接收站建造了两座120,000 m³陆上薄膜罐。这些储罐已投入商业运营40多年,计划延寿运行到2035年。

GST technology was derived from GTT’s Mark III system for LNG carriers and GTT built its first onshore membrane-based tanks for ethylene in the 1970s in France. The tanks are still operating commercially. The company developed membrane technology for LNG in the 1980s, when it built two 120,000 m³ onshore membrane tanks for Montoir (France) LNG Receiving Terminal. These have been in commercial operation for more than 40 years and are expected to be in service until 2035.

GTT公司在2007年研发并推出了GST薄膜型全容罐系统,以满足欧标EN 14620规范。该标准于2006年更新,添加了热角保护系统作为全容罐的结构之一。至今,已有37座采用GTT陆地薄膜技术已建造的薄膜罐正在运行,主要地区包括法国、日本、韩国和中国。

GTT developed the GST system in 2007, to comply with the EN 14620 standard, which was updated in 2006 to include the need for a thermal protection system. Currently. 37 GTT-built membrane tanks are in operation, mainly in France, Japan, South Korea and China.

这项技术显然已被证明并得到了很好的应用,目前还有20多座GST薄膜型全容罐正在建设中,其储存容积大多较已投运的薄膜罐要大。

The technology is obviously proven and well-used and 20 more GST tanks are currently under construction, in larger sizes than many of the current tanks.

最大的建设项目之一在中国,GTT公司正在为北京燃气天津南港LNG接收站建设薄膜型全容罐。

One of the biggest construction projects is in China, where GTT is building tanks at Beijing Gas Tianjin South Port LNG Terminal.

“GTT公司和北控集团(北京燃气集团控股公司)于2019年12月在中法两国元首的鉴证下签署了合作谅解备忘录。2020年GTT公司和北京燃气集团正式展开合作,为北京燃气天津南港LNG接收站建造2座陆上薄膜型全容罐(每座储罐净容积22万方)。”陈先生补充道:2021年 3月,GTT公司和北京燃气集团加深合作,扩展了合作协议,为北京燃气天津南港LNG接收站再建6座22万方薄膜型全容罐。”

‘GTT and Beijing Enterprises Group (the parent company of Beijing Gas Group) signed a collaboration memorandum of understanding (MoU) in December 2019 witnessed by two presidents; then officially launched a cooperation to build two large membrane onshore tanks (220,000 m3 per tank) for Beijing Gas Tianjin South Port LNG Terminal in 2020,’ says CHEN. ‘Thereafter in March 2021, GTT and Beijing Gas Group strengthened collaboration by extending cooperation agreement to build another six large membrane tanks.’

接收站第一阶段两座薄膜罐预计将于2022年底机械完工,2023年初投入商业运营。GTT公司目前正在研发超大薄膜型全容罐,正在为30万方及以上的薄膜型全容罐应用的商业化做充分的技术储备。

The first two tanks are expected to be mechanically completed by the end of 2022 and start commercial operation early 2023. GTT is now looking at commercializing even larger scale tanks with capacities in excess of 300,000 m3 in the near future.

“GTT还正在开发一种中型模块化薄膜罐,可完全在船厂或模块建造厂制造。制造完成后运至项目现场进行安装和调试。与传统的现场组装立式圆筒平底钢质LNG储罐相比,这种技术可以显著降低项目投资成本和建设周期。

‘GTT is also developing a mid-scale modular membrane tank which can be constructed in the fabrication yard and transported to job site for installation and pre-commissioning. This concept can significantly reduce cost and schedule compared to traditional stick-built LNG tanks,’ says CHEN.

目前的GST薄膜型全容罐技术还适用于储存液氨,因此非常适用于低温液体介质储存的转换。

The current GST technology is ammonia-ready, making it ideal for the energy transition.

很好的展示GTT陆地薄膜技术的机会

GOOD EXPOSURE

陈先生表示,GTT公司参与该奖项的评选,,能更广泛地传达其最先进的陆地薄膜技术及运用该技术正在建设的项目进展。

CHEN says that GTT entered the Awards due to the reputation of Tank Storage Magazine within the LNG industry. The company saw its entry as a way to more widely announce the state-of-the-art GST technology and the recent projects in which it has been used.

他还表示:“全球储罐评选活动确实将GTT公司、GST陆地薄膜技术与行业的专家和同行联系得更紧密了。”

‘The Tank Storage Awards have indeed linked GTT and GST technology to the industry more closely,’ he says.

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