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天然氣中的硫化氫是怎么處理的？

首頁- 新聞資訊 > 公司新聞

2021-07-07

天然氣作為一種潔凈、方便、高能的優(yōu)量燃料，同時也是重要的化工原料，在人們日常生活以及工廠生產中起著越來越重要的作用。自上世紀60年代以來，隨著國民經濟高速發(fā)展以及對能源需求的大幅增長，我國天然氣工業(yè)得到了快速發(fā)展。天然氣分為含硫天然氣和不含硫天然氣，含硫天然氣必須經過凈化處理才能作為商品天然氣進行銷售。

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.

含硫天然氣，被稱為“粗天然氣”。它的處理過程包括脫硫脫碳、硫黃回收以及尾氣處理等。脫硫脫碳是為了獲得清潔的天然氣，硫黃回收以及尾氣處理可以將有毒有害物質轉化為副產品——硫黃，滿足環(huán)保要求，真正實現(xiàn)“變廢為寶”。

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".
沼氣提純

經過50多年的持續(xù)攻關，西南油氣田研發(fā)出一系列針對不同氣質條件和處理要求的工藝技術。根據不同含硫量，劃分“高、中、低”3類氣質，開發(fā)出醇胺法脫硫脫碳、液相氧化還原脫硫、固體脫硫、生物脫硫等技術，完善了天然氣脫硫脫碳配套技術。含有硫化氫等雜質的天然氣進行脫硫脫碳處理后，還需進行脫水處理，滿足國家標準后，正式成為商品天然氣進入管網供應。

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.

通過脫硫脫碳環(huán)節(jié)處理再生析出的含硫化氫氣體被富集起來，統(tǒng)稱為“酸氣”。酸氣大多進入硫黃回收及尾氣處理裝置進行回收，會變成硫黃產品。西南油氣田開發(fā)的硫黃回收技術包括：常規(guī)克勞斯技術、有機硫水解技術、H2S選擇性氧化技術及常規(guī)/低溫加氫水解技術等，根據氣質條件和經濟合理性，運用不同的技術組合，將“酸氣”中的硫化氫通過經典克勞斯反應（H2S與SO2反應生成單質硫）和有機硫水解反應轉化成硫黃未轉化的含硫化合物，進入到尾氣處理環(huán)節(jié)灼燒，實現(xiàn)達標排放。

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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