Biological natural gas has been developing for more than ten years in China, but why has it always been so popular? What problems still exist in the development of biogas desulfurization? In fact, it has nothing to do with a series of links, such as raw material supply, technical equipment, operation and management.

首要难题就是原料收储运困难。生物天然气原料分布分散，收储运面临较大挑战。要实现规模效益，必须依靠大农场及专业团队。

The first difficulty is the difficulty of material storage and transportation. Biological natural gas (BNG) raw materials are dispersed, and its storage and transportation are facing great challenges. To achieve scale efficiency, we must rely on large farms and professional teams.

除此之外，生物天然气配套设施包括了原料的收储运、预处理、发酵转化、净化提纯、燃气及肥料输运等环节，相关的国产、进口配套设备都较齐全，但仍然存在匹配性的问题。

In addition, the supporting facilities of bio-natural gas include the storage and transportation of raw materials, pretreatment, fermentation and transformation, purification and purification, gas and fertilizer transportation, and the related domestic and imported supporting equipment are relatively complete, but there are still matching problems.

在工程建设初期运行效果较好，随着工程运行时间的延长，部分工程会出现运行效率降低甚至停滞、设施设备锈蚀、管道堵塞、罐体淤泥多、浮渣难处理等问题。

In the initial stage of construction, the operation effect is better. With the extension of the operation time, some projects will have problems such as lower or even stagnant operation efficiency, corrosion of facilities and equipment, blockage of pipelines, more silt in tanks, and difficult treatment of scum.

由于生物燃气转化成本高，设备运行条件恶劣，日常运行维护管理经费没有保障，造成出现故障后不能及时得到正常的维修，使得整个产业再次陷入困境。“生物天然气‘三分建设，七分管理’，当前需要加强的就是项目实施完成后的运行与管理。同时，在项目规划初期既要考虑建设投资，也要配备运行管理费用。

Due to the high cost of biogas conversion, the poor operating conditions of equipment and the lack of guarantees for daily operation and maintenance management expenses, the whole industry is once again in a dilemma because of the failure of biogas conversion, which results in the failure of normal maintenance in time. "Biogas's three-part construction and seven-part management" needs to be strengthened after the completion of the project operation and management. At the same time, in the initial stage of project planning, we should consider both construction investment and operation and management costs.

目前，我国的生物天然气产业还处在发展初期，在提高工程规模化水平和效率，实现气、液、固等产品的高值、高效综合利用，提高工程的环保、生态、经济和社会效益上都应该多下功夫。要把影响工程商业运行的原料收集难、原料成本高、产品价格低、扶持政策不到位等问题予以解决。

At present, China's bio-natural gas industry is still in its early stage of development. More efforts should be made to improve the scale and efficiency of the project, realize high-value and efficient comprehensive utilization of gas, liquid and solid products, and improve the environmental protection, ecological, economic and social benefits of the project. The problems affecting the commercial operation of the project, such as difficult collection of raw materials, high cost of raw materials, low price of products and inadequate support policies, should be solved.

不仅如此，生物天然气产业的上游原料供应和下游产品方面都缺乏专门的标准和技术规范，只能使用少数燃气产业现有的标准规范。为此，马隆龙建议，加快生物天然气进入车用燃气、工业用气、城市燃气管网、合同能源管理等多种清洁燃气利用领域的标准体系，从生产与净化、储存、输配、应用等环节进行标准制定，建立与现有长输管道天然气、城镇燃气标准体系相协调的通用和专用标准。

Moreover, there are no special standards and technical specifications for the upstream raw material supply and downstream products of the biogas industry, and only a few existing standards and specifications for the gas industry can be used. For this reason, Malonglong suggested that the standard system of bio-natural gas should be accelerated to enter the fields of vehicle gas, industrial gas, urban gas pipeline network, contract energy management and other clean gas utilization. Standards should be formulated from the aspects of production and purification, storage, transmission and distribution, application, and a general and special standard should be established to coordinate with the existing standard system of long-distance pipeline natural gas and urban gas.

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