【摘要】：煤中硫主要有無(wú)機(jī)硫和有機(jī)硫,無(wú)機(jī)硫組成相對(duì)簡(jiǎn)單容易脫除,有機(jī)硫結(jié)構(gòu)復(fù)雜不易脫除。高硫煉焦煤里的含硫組分會(huì)使所煉鋼熱脆,燃燒產(chǎn)生的SO2等氣體,會(huì)對(duì)人體和環(huán)境造成危害。脫除高硫煉焦煤里含硫組分具有重要意義。 用山西高陽(yáng)高硫煉焦煤開展研究,系統(tǒng)的分析煤樣含硫組分賦存狀態(tài)及其含量。通過(guò)微波脫硫?qū)嶒?yàn),為微波脫硫工業(yè)化試驗(yàn)開展提供數(shù)據(jù)支持。論文具體的研究?jī)?nèi)容和取得的主要研究結(jié)果： 1.次氯酸鈉做浸提劑,用單因素方法考察浸提劑濃度、微波輻照時(shí)間、微波功率、煤樣粒度、反應(yīng)溫度5因素變化對(duì)煤樣微波全硫脫除效果的影響,逐一確定各因素水平的最佳反應(yīng)值。實(shí)驗(yàn)結(jié)果顯示：次氯酸鈉最佳反應(yīng)濃度為50g/l、微波輻照時(shí)間最佳反應(yīng)值為3min、微波功率最佳反應(yīng)值為540w、反應(yīng)溫度最佳反應(yīng)值是100℃、煤樣粒度最佳范圍是-0.125mm,在各因素最佳條件下山西高陽(yáng)煤樣微波全硫脫出率為14.96%；煤樣粒度范圍取-0.125mm,通過(guò)混合水平正交實(shí)驗(yàn)及其結(jié)果分析,確定浸提劑濃度、微波輻照時(shí)間、微波功率、反應(yīng)溫度4因素水平組合最優(yōu)方案,實(shí)驗(yàn)結(jié)果顯示當(dāng)次氯酸鈉濃度為65g/l、微波輻照時(shí)間為3min、微波功率為540w、反應(yīng)溫度為100℃時(shí)達(dá)到最佳脫硫率為20.77%。 2.高猛酸鉀做浸提劑,煤樣粒度范圍取-0.125mm,用單因素方法考察浸提劑濃度、微波輻照時(shí)間、微波功率、反應(yīng)溫度4因素變化對(duì)煤樣微波全硫脫除效果的影響,逐一確定各因素的最佳反應(yīng)值。實(shí)驗(yàn)結(jié)果顯示：微波輻照時(shí)間最佳反應(yīng)值為3min、微波功率最佳反應(yīng)值為540w、浸提劑最佳反應(yīng)濃度為5g/100ml、反應(yīng)溫度最佳反應(yīng)值是100℃,在各因素最佳條件下,山西高陽(yáng)煤樣微波全硫脫出率為33.70%。煤樣粒度范圍取-0.125mm、微波功率540w,通過(guò)正交實(shí)驗(yàn)及其結(jié)果分析,確定浸提劑濃度、微波輻照時(shí)間、反應(yīng)溫度3因素水平組合最優(yōu)方案,實(shí)驗(yàn)結(jié)果顯示當(dāng)微波輻照時(shí)間為150s：浸提劑濃度5.5g/1100ml、反應(yīng)溫度100℃時(shí)達(dá)到最佳脫硫率為36.04%。 3脫除山西高陽(yáng)煤樣中的無(wú)機(jī)硫,氫氧化鈉做浸提劑,煤樣粒度范圍取-0.125mm、微波功率540w,對(duì)脫除無(wú)機(jī)硫后的煤樣用單因素方法考察浸提劑濃度、微波輻照時(shí)間、反應(yīng)溫度3因素變化對(duì)煤樣微波有機(jī)硫脫除效果的影響,逐一確定各因素的最佳反應(yīng)值。實(shí)驗(yàn)結(jié)果顯示：浸提劑最佳反應(yīng)濃度為300g/l、微波輻照時(shí)間最佳反應(yīng)值為6min、反應(yīng)溫度最佳反應(yīng)值是120℃.(以微波反應(yīng)器所測(cè)溫度為準(zhǔn)),在各因素最佳條件下山西高陽(yáng)煤樣微波有機(jī)硫脫出率為5.35%。 4.通過(guò)XPS分析煤中含硫組分類型。硫醇硫醚類硫微波脫除效果相對(duì)較好,噻吩類硫微波脫除效果差。
[Abstract]:The sulfur in coal mainly consists of inorganic sulfur and organic sulfur. The composition of inorganic sulfur is relatively simple and easy to remove, and the structure of organic sulfur is complex and difficult to remove. High sulfur coking coal containing sulfur makes the steel-making hot and brittle, burning SO2 and other gases, which will cause harm to human body and environment. It is of great significance to remove sulfur components from high sulfur coking coal. In this paper, high sulfur coking coal in Gaoyang, Shanxi Province is studied, and the occurrence state and content of sulfur components in coal samples are systematically analyzed. The experiment of microwave desulfurization provides data support for the industrialization test of microwave desulfurization. The specific research contents and main results obtained are as follows: 1. Sodium hypochlorite was used as extractant. The effects of concentration of extractant, time of microwave irradiation, microwave power, particle size of coal sample and reaction temperature on the removal of total sulfur from coal sample were investigated by single factor method. The optimum response value of each factor level was determined one by one. The experimental results show that the optimum reaction concentration of sodium hypochlorite is 50 g / l, the optimum reaction value of microwave irradiation time is 3 min, the optimum reaction value of microwave power is 540 wk, and the optimum reaction temperature is 100 鈩，

本文編號(hào)：2156649