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天然气中的硫化氢是怎么处理的？

首页- 新闻资讯 > 公司新闻

2021-07-07

天然气作为一种洁净、方便、高能的优量燃料，同时也是重要的化工原料，在人们日常生活以及工厂生产中起着越来越重要的作用。自上世纪60年代以来，随着国民经济高速发展以及对能源需求的大幅增长，我国天然气工业得到了快速发展。天然气分为含硫天然气和不含硫天然气，含硫天然气必须经过净化处理才能作为商品天然气进行销售。

As a clean, convenient and high-energy fuel, natural gas is also an important chemical raw material, which plays an increasingly important role in people's daily life and factory production. Since the 1960s, with the rapid development of national economy and the substantial growth of energy demand, China's natural gas industry has developed rapidly. Natural gas is divided into sour natural gas and non sour natural gas. Sour natural gas must be purified before it can be sold as commercial natural gas.

含硫天然气，被称为“粗天然气”。它的处理过程包括脱硫脱碳、硫黄回收以及尾气处理等。脱硫脱碳是为了获得清洁的天然气，硫黄回收以及尾气处理可以将有毒有害物质转化为副产品——硫黄，满足环保要求，真正实现“变废为宝”。

Sour natural gas is called "crude natural gas". Its treatment process includes desulfurization and decarbonization, sulfur recovery and tail gas treatment. Desulfurization and decarbonization is to obtain clean natural gas. Sulfur recovery and tail gas treatment can transform toxic and harmful substances into by-product sulfur, meet the requirements of environmental protection, and truly realize "turning waste into treasure".
沼气提纯

经过50多年的持续攻关，西南油气田研发出一系列针对不同气质条件和处理要求的工艺技术。根据不同含硫量，划分“高、中、低”3类气质，开发出醇胺法脱硫脱碳、液相氧化还原脱硫、固体脱硫、生物脱硫等技术，完善了天然气脱硫脱碳配套技术。含有硫化氢等杂质的天然气进行脱硫脱碳处理后，还需进行脱水处理，满足国家标准后，正式成为商品天然气进入管网供应。

After more than 50 years of continuous research, southwest oil and gas field has developed a series of technologies for different gas quality conditions and treatment requirements. According to different sulfur content, three kinds of gas quality are classified as "high, medium and low". Technologies of desulfurization and decarbonization by alcohol amine method, liquid phase oxidation-reduction desulfurization, solid desulfurization and biological desulfurization are developed, and supporting technologies of natural gas desulfurization and decarbonization are improved. After desulfurization and decarbonization treatment, natural gas containing hydrogen sulfide and other impurities also needs dehydration treatment. After meeting the national standards, it officially becomes commercial natural gas and enters the pipeline network for supply.

通过脱硫脱碳环节处理再生析出的含硫化氢气体被富集起来，统称为“酸气”。酸气大多进入硫黄回收及尾气处理装置进行回收，会变成硫黄产品。西南油气田开发的硫黄回收技术包括：常规克劳斯技术、有机硫水解技术、H2S选择性氧化技术及常规/低温加氢水解技术等，根据气质条件和经济合理性，运用不同的技术组合，将“酸气”中的硫化氢通过经典克劳斯反应（H2S与SO2反应生成单质硫）和有机硫水解反应转化成硫黄未转化的含硫化合物，进入到尾气处理环节灼烧，实现达标排放。

The gas containing hydrogen sulfide is enriched by desulfurization and decarbonization, which is called "acid gas". Most acid gas enters sulfur recovery and tail gas treatment unit for recovery, which will turn into sulfur products. Sulfur recovery technologies in southwest oil and gas field development include conventional Claus technology, organic sulfur hydrolysis technology, H2S selective oxidation technology and conventional / low temperature hydrohydrolysis technology, etc, Hydrogen sulfide in "sour gas" is converted into sulfur compounds not converted by sulfur through classical Claus reaction (hydrogen sulfide reacts with SO2 to generate elemental sulfur) and hydrolysis reaction of organic sulfur, and then enters into tail gas treatment link for burning, so as to achieve standard emission.

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