天然氣的脫硫凈化研究
發(fā)布時間:2018-06-29 11:46
本文選題:脫硫劑 + 直接注入法脫硫 ; 參考:《西安石油大學(xué)》2017年碩士論文
【摘要】:天然氣作為一種CO_2等污染物排放較少、能量利用率高和熱值較高的清潔能源,越來越受世界各國的重視。天然氣中所含的酸性組分H_2S不僅會造成環(huán)境污染,還會帶來催化劑中毒、金屬設(shè)備的腐蝕及影響天然氣的熱值等問題。因而在天然氣的運輸與利用之前,必須將H_2S從天然氣中脫除。環(huán)狀胺脫硫劑是一種新興的液體脫硫劑,其合成簡便、成本低廉、空間占用率低、可直接注入、脫硫效率高,在眾多脫硫劑中占有不可替代的地位。目前環(huán)狀胺脫硫劑已得到越來越廣泛的關(guān)注,但國內(nèi)相關(guān)研究較少。本課題對TMT、HET、HPT這三種環(huán)狀醇胺脫硫劑的脫硫效果進行了評價?疾炝藵舛葘γ摿騽┟摿蛐阅艿挠绊,研究了MOPA、CBHA這兩種添加劑對硫容量的影響。結(jié)果表明,HET的瞬時脫硫速率和硫容量均顯著優(yōu)于另外兩種。同一種脫硫劑,在不同濃度下的脫硫性能都表現(xiàn)出先上升后下降的趨勢。MOPA、CBHA對HET溶液的硫容量均有促進作用。以環(huán)狀胺類化合物為主劑,通過加入添加劑改善脫硫性能,配制成SR-1和HN-1兩種復(fù)合環(huán)狀胺脫硫劑?疾炝诉@兩種脫硫劑在不同溫度和不同硫化氫濃度下的脫硫性能。當H_2S濃度在200~1000 ppm,溫度在3~45℃范圍內(nèi),使用體積為1mL的SR-1脫硫劑可脫除0.585~7.123 mg的H_2S。當H_2S濃度在200~1000 ppm,溫度在3~45℃范圍內(nèi),1mL的HN-1脫硫劑可脫除2.637~13.878 mg的H_2S。在現(xiàn)場脫硫?qū)嶒炛?1mL的HN-1脫硫劑可脫除3.64~4.86 mg的H_2S。
[Abstract]:Natural gas, as a clean energy with less emission of CO-2 and other pollutants, high energy efficiency and high calorific value, has been paid more and more attention by countries all over the world. The acid component H _ 2S in natural gas will not only cause environmental pollution, but also lead to the poisoning of catalyst, corrosion of metal equipment and influence on the calorific value of natural gas. Therefore, H _ 2S must be removed from natural gas before its transportation and utilization. Cycloamine desulfurizer is a new kind of liquid desulphurizer, which has the advantages of simple synthesis, low cost, low space occupancy, direct injection, high desulfurization efficiency, and plays an irreplaceable role in many desulphurizers. At present, cyclic amine desulfurizer has been paid more and more attention, but there are few related researches in China. In this paper, the desulfurization effect of three cyclic alcohol amine desulfurizers, TMTHETH HPT, was evaluated. The influence of concentration on desulfurization performance of desulphurizer and the effect of two additives, MOPA-CBHA, on sulfur capacity were investigated. The results showed that the instantaneous desulphurization rate and sulfur capacity of HET were significantly better than those of the other two. The desulfurization performance of the same desulfurizer at different concentrations showed a tendency of first rising and then decreasing. MOPACBHA promoted the sulfur capacity of HET solution. Two kinds of complex cyclic amine desulfurizer SR-1 and HN-1 were prepared by adding additives to improve desulfurization performance. The desulphurization properties of these two desulfurizers at different temperatures and different hydrogen sulfide concentrations were investigated. When the concentration of H2S is 2000.000 ppmand the temperature is 30.45 鈩,
本文編號:2082009
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