天然气发电机组：零碳复温压差发电破局，年发电330万度，盘活管网废弃压力能

　　Natural gas generator set: Zero carbon reheating pressure differential power generation breaks the deadlock, generating 3.3 million kWh annually and activating waste pressure energy in the pipeline network

　　天然气管网运输与调压环节长期存在两大行业痛点：高压天然气长途输送后需大幅降压适配下游用户，海量压力能通过调压阀白白损耗；传统调压后需依赖燃气、电加热复温，不仅消耗额外能源，还产生碳排放，冬季更面临管道结冰堵管风险。如今，全球首套**零碳复温天然气压差发电机组**在山东曲阜正式投运，彻底打破这一困局，这套由中科院工程热物理研究所自主研发的核心装备，将管网废弃压力能高效转化为零碳电能，年发电量突破330万度，实现“压力回收+零碳发电+防冻复温”三重突破，成为天然气场站绿色转型、能源高效利用的标杆方案。

　　There are two major industry pain points in the transportation and pressure regulation of natural gas pipeline networks for a long time: after long-distance transmission of high-pressure natural gas, it needs to be significantly reduced in pressure to adapt to downstream users, and massive pressure can be wasted through pressure regulating valves; Traditional pressure regulation relies on gas and electric heating for reheating, which not only consumes additional energy but also generates carbon emissions, and faces the risk of pipeline icing and blockage in winter. Now, the world's first zero carbon reheating natural gas pressure differential generator set has been officially put into operation in Qufu, Shandong, completely breaking this dilemma. This core equipment, independently developed by the Institute of Engineering Thermophysics of the Chinese Academy of Sciences, efficiently converts waste pressure energy from pipeline networks into zero carbon electricity, with an annual power generation exceeding 3.3 million kWh, achieving a triple breakthrough of "pressure recovery+zero carbon power generation+antifreeze reheating", and becoming a benchmark solution for green transformation and energy efficient utilization of natural gas stations.

　　压差能源长期浪费，传统调压模式弊端凸显

　　Long term waste of differential pressure energy, highlighting the drawbacks of traditional pressure regulation mode

　　天然气长途管道运输需维持高压，以克服摩擦阻力、提升输送流量，而抵达终端门站后，下游用户用气压力远低于输送压力，必须进行降压处理。长期以来，行业普遍采用调压阀节流降压，直接将宝贵的压力能无偿耗散，这部分被浪费的能源体量惊人，却始终未得到有效利用。同时，天然气节流降压过程中会急剧降温，冬季极易导致管道、阀门结冰堵塞，影响供气安全，传统解决方案依赖天然气燃烧或电加热复温，不仅增加场站运营成本，还额外产生碳排放，违背双碳发展目标，也拉高了场站能耗指标。

　　Long distance natural gas pipeline transportation requires maintaining high pressure to overcome frictional resistance and increase transmission flow. However, after reaching the terminal station, downstream users use air pressure much lower than the transmission pressure and must undergo depressurization treatment. For a long time, the industry has commonly used pressure regulating valves to throttle and reduce pressure, directly dissipating valuable pressure energy for free. The amount of wasted energy is astonishing, but it has never been effectively utilized. At the same time, during the process of natural gas throttling and pressure reduction, the temperature drops sharply, which can easily cause pipeline and valve icing and blockage in winter, affecting gas supply safety. Traditional solutions rely on natural gas combustion or electric heating for reheating, which not only increases the operating costs of the station, but also generates additional carbon emissions, violating the dual carbon development goal and raising the energy consumption index of the station.

　　这套零碳复温天然气压差发电机组的问世，精准破解上述难题，它摒弃传统调压阀耗能模式，将废弃压力能转化为高品位电能，同时通过原创技术实现零碳复温，既保障供气安全，又实现能源回收，填补了国内乃至国际天然气压差零碳发电的技术空白，核心装备与工艺实现100%自主化，摆脱对外技术依赖。

　　The emergence of this zero carbon reheating natural gas pressure difference generator set accurately solves the above problems. It abandons the traditional energy consumption mode of pressure regulating valves, converts waste pressure energy into high-grade electrical energy, and achieves zero carbon reheating through original technology, which not only ensures gas supply safety but also realizes energy recovery, filling the technical gap of zero carbon power generation in natural gas pressure difference at home and even internationally. The core equipment and process are 100% independent, getting rid of external technological dependence.

　　核心技术突破：零碳复温+压差发电，全流程绿色高效

　　Core technological breakthrough: zero carbon reheating+differential pressure power generation, green and efficient throughout the entire process

　　该款天然气发电机组以压差能量回收为核心，搭配独创零碳复温技术，构建“压力转化-发电做功-零碳复温”全闭环流程，运行全程无额外燃料消耗、零碳排放，区别于传统天然气燃烧发电，属于纯物理能量回收，环保效益与能源效益双重拉满。高压天然气首先进入机组膨胀机，通过压力势能驱动膨胀机叶轮高速旋转，将压力能转化为机械能，进而带动发电机运转输出电能，完成废弃压力到清洁电力的高效转化，替代传统调压节流，实现能源“变废为宝”。

　　This natural gas generator set is based on pressure difference energy recovery and is equipped with a unique zero carbon reheating technology. It constructs a fully closed-loop process of "pressure conversion power generation work zero carbon reheating", with no additional fuel consumption or zero carbon emissions throughout the operation. It is different from traditional natural gas combustion power generation and belongs to pure physical energy recovery, achieving dual environmental and energy benefits. High pressure natural gas first enters the expansion turbine of the unit, which drives the high-speed rotation of the expansion turbine impeller through pressure potential energy, converts pressure energy into mechanical energy, and then drives the generator to operate and output electrical energy, completing the efficient conversion of waste pressure to clean electricity, replacing traditional pressure regulation and throttling, and realizing the "turning waste into treasure" of energy.

　　最具突破性的是**零碳复温技术**，机组无需燃烧天然气、无需外接电加热，依托系统流程创新，即可在冬季将天然气出口温度提升至0℃以上，彻底消除管道结冰隐患，同时省去传统复温环节的能源消耗与碳排放。整套系统经过甩负荷、紧急切断等多项严苛测试，运行稳定可靠，可适配天然气管网变工况运行需求，既能满足场站自身生产、监控、运维等全部用电需求，多余电量还可直接并入国家电网，实现自发自用、余电上网。

　　The most breakthrough is the zero carbon reheating technology, which eliminates the need for natural gas combustion or external electric heating. With innovative system processes, the natural gas outlet temperature can be raised to above 0 ℃ in winter, completely eliminating the risk of pipeline icing and saving energy consumption and carbon emissions in traditional reheating processes. The entire system has undergone rigorous tests such as load shedding and emergency shutdown, and operates stably and reliably. It can adapt to the changing operating conditions of natural gas pipelines and meet all the electricity needs of the station, including production, monitoring, and operation. Excess electricity can also be directly integrated into the national power grid, achieving self use and grid connection.

　　行业价值凸显：零碳场站新标杆，赋能双碳目标落地

　　Highlighting Industry Value: A New Benchmark for Zero Carbon Stations, Empowering the Implementation of Dual Carbon Goals

　　作为全球首套落地的零碳复温天然气压差发电系统，这款天然气发电机组的投运，不仅是能源装备技术的重大突破，更推动天然气门站从单纯调压枢纽，转型为分布式零碳发电站，盘活全国天然气管网海量废弃压差能源。中科院团队历经十余年技术攻关，从原理创新到关键设备突破，攻克高效紧凑换热器、高膨胀比膨胀机、变工况运行等核心技术，此前已在山东淄博建成300千瓦示范项目，此次曲阜项目实现规模化落地，年发电330万度以上，相当于每年节约大量化石能源，减排二氧化碳数千吨，零碳效益显著。

　　As the world's first zero carbon reheating natural gas pressure differential power generation system, the operation of this natural gas generator set is not only a major breakthrough in energy equipment technology, but also promotes the transformation of natural gas valve stations from simple pressure regulation hubs to distributed zero carbon power stations, and revitalizes the massive waste pressure differential energy in the national natural gas pipeline network. The team of the Chinese Academy of Sciences has gone through more than ten years of technological breakthroughs, from principle innovation to key equipment breakthroughs, and has overcome core technologies such as efficient and compact heat exchangers, high expansion ratio expanders, and variable operating conditions. Previously, a 300 kW demonstration project was built in Zibo, Shandong. This Qufu project has achieved large-scale implementation, with an annual power generation of over 3.3 million kWh, equivalent to saving a large amount of fossil energy and reducing carbon dioxide emissions by thousands of tons every year, with significant zero carbon benefits.

　　从经济效益来看，机组彻底摆脱对外部热源的依赖，大幅降低场站复温、用电成本，余电上网还能带来额外收益，投资回本周期可控；从行业推广来看，该技术可快速复制到全国各类天然气门站、调压站，适配不同管网压力与流量工况，推动整个天然气行业实现绿色低碳升级。

　　From the perspective of economic benefits, the unit has completely rid itself of dependence on external heat sources, significantly reducing the cost of station reheating and electricity consumption. The surplus electricity can also bring additional benefits to the grid, and the investment payback period is controllable; From the perspective of industry promotion, this technology can be quickly replicated to various natural gas valve stations and pressure regulating stations across the country, adapting to different pipeline pressure and flow conditions, and promoting the green and low-carbon upgrading of the entire natural gas industry.

　　相较于传统天然气燃烧发电机组，这款零碳压差发电机组无需消耗天然气燃料，纯靠回收废弃能源发电，真正实现零碳、零耗、高效，为能源行业循环利用、节能降碳提供了全新路径，也为我国双碳目标实现提供了硬核技术支撑，是天然气能源领域绿色转型的核心装备。

　　Compared to traditional natural gas combustion power generation units, this zero carbon pressure difference power generation unit does not require the consumption of natural gas fuel and relies solely on the recycling of waste energy to generate electricity, truly achieving zero carbon, zero consumption, and high efficiency. It provides a new path for the energy industry's circular utilization, energy conservation, and carbon reduction, and also provides hardcore technical support for China's dual carbon goals. It is the core equipment for the green transformation of the natural gas energy field.

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