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新版天然气强制性国家标准的实施,将促进天然气行业质量、安全、环保事业的发展,也为维护我国在国际天然气贸易中的利益提供了保证。9月1日起,2012版《天然气》强制性国家标准(GB17820-2012)正式实施。与1999年版的标准相比,新版天然气标准对气质要求有较大幅度提高。2012版的主要变化是一类气每立方米天然气高位发热量由原来每立方米大于31.4兆焦耳提高到每立方米大于36兆焦耳,总硫含量由每立方米不大于100毫克提高到每立方米不大于60毫克,二氧化碳含量由小于或等于3%提高为小于或等于2%。三类气每方天然气总硫和硫化氢含量由不大于460毫克提高到不大于350毫克。新标准明确了水露点应比输送条件下最低环境温度低5摄氏度。
The implementation of the new mandatory national standard for natural gas will promote the development of the quality, safety and environmental protection in the natural gas industry and provide a guarantee for safeguarding the interests of our country in the international gas trade. From September 1, the 2012 version of “Natural Gas” mandatory national standard (GB17820-2012) was officially implemented. Compared with the 1999 version of the standard, the new version of natural gas standards on the temperament requirements have more substantial increase. The major changes in the 2012 edition are that the high calorific value per cubic meter of natural gas from a class of gas increased from more than 31.4 megajoules per cubic meter to more than 36 megajoules per cubic meter and the total sulfur content increased from not more than 100 milligrams per cubic meter per cubic meter Not more than 60 mg of rice, the carbon dioxide content increased from less than or equal to 3% to less than or equal to 2%. The three types of natural gas each gas total sulfur and hydrogen sulfide content from no greater than 460 mg to no greater than 350 mg. The new standard specifies that the water dew point should be 5 degrees Celsius cooler than the minimum ambient temperature under transport conditions.