一、引言液化石油气(以下简称液化气)掺混空气技术作为城市煤气高峰的应急补充措施,是一种比较可靠的确保用气高峰手段。早在二十年代国外便应用了,并在1926年开始用于城市煤气工业中。目前美国最大的混气装置,其生产能力为30万m~3/d,其它国家如日本、法国、意大利、苏联等国,也都有这类混气装置,且自动化程度不断地提高。进入六十年代后,由于我国的石油工业得到飞速发展,东北地区也开始研究这项技术。锦州市煤气公司于1965年建成的日产1.2万m~3/d的混气装置,接着沈阳、长春、哈尔滨等东北城市相继采用液化气掺混空气 I. INTRODUCTION The liquefied petroleum gas (hereinafter referred to as liquefied petroleum gas) air-blending technology, as an emergency supplement measure for the peak of city gas, is a reliable measure to ensure peak usage of gas. It was applied abroad as far back as the 1920s and was used in the city gas industry in 1926. At present, the largest gas mixing device in the United States has a production capacity of 300,000 m3/d. Other countries such as Japan, France, Italy, and the Soviet Union also have such gas mixing devices, and the degree of automation is constantly increasing. After entering the 1960s, due to the rapid development of China’s oil industry, the Northeast began to study this technology. The liquefied gas blending air was successively used in the northeast cities of Shenyang, Changchun, and Harbin, which were built by the Jinzhou Gas Company in 1965 with an installed capacity of 12,000 m3/d.