国产成人精品综合久久久久性色,继母的拖油瓶是我的前女友动漫,欧美精品乱码99久久蜜桃,精品国产自在天天线2019

歡迎進入山東恒能環(huán)保能源設備有限公司

熱線電話

0531-69953988

分類導航
產品展示
聯(lián)系我們
山東恒能環(huán)保能源設備有限公司

聯(lián)系電話:18678860671

服務熱線:0531-69953988

聯(lián)系地址:中國(山東)自由貿易試驗區(qū)濟南片區(qū)孫村街道經十東路33688號章錦綜合保稅區(qū)聯(lián)東U谷科創(chuàng)中心5號樓 101

生物脫硫技術在煤化工酸性氣脫硫中的應用

生物脫硫技術是利用堿液吸收酸性氣中的硫化氫,然后在硫黃桿菌的生化作用下產生硫黃,再經脫水、熔硫等操作,實現(xiàn)酸性氣凈化和硫黃回收的目的。介紹了生物脫硫技術的原理、工藝流程、操作要點及控制指標、主要設備、運行效果。實際運行結果表明,生物脫硫技術脫硫效率高、運行穩(wěn)定,處理后的排放廢氣完全滿足相關國家標準的要求

Biological desulfurization technology utilizes alkaline solution to absorb hydrogen sulfide from acidic gas, and then generates sulfur under the biochemical action of Thiobacillus. After dehydration, sulfur melting, and other operations, it achieves the purpose of acid gas purification and sulfur recovery. Introduced the principle, process flow, operating points, control indicators, main equipment, and operating effects of biological desulfurization technology. The actual operation results show that the biological desulfurization technology has high desulfurization efficiency and stable operation, and the treated exhaust gas fully meets the requirements of relevant national standards

1酸性氣的產生及來源

1. The generation and source of acidic gas

煤中的硫在水煤漿氣化爐內高溫燃燒形成H2S,并隨粗煤氣進入低溫甲醇洗單元。因H2S與甲醇同為極性分子,易形成氫鍵,因此H2S在甲醇中有很好的溶解度。粗煤氣經甲醇洗滌塔內的甲醇洗滌后,CO2、H2S等氣體均溶解在甲醇中。洗滌后的甲醇經減壓閃蒸、低壓解析、N2氣提除去甲醇中大部分的CO2后,富含H2S的甲醇經熱再生塔加熱氣提再生,甲醇與H2S之間的氫鍵斷裂。從熱再生塔頂部出來的富含H2S的酸性氣體流量約1870m3/h(標態(tài)),其中H2S為25.38%(體積分數,下同)、COS為0.02%、CO2為72.35%,經冷卻分離后送至硫回收裝置。

The sulfur in coal is burned at high temperature in the coal water slurry gasifier to form H2S, which enters the low-temperature methanol washing unit with the crude gas. Due to the fact that H2S and methanol are both polar molecules and are prone to forming hydrogen bonds, H2S has good solubility in methanol. After being washed with methanol in the methanol washing tower, the crude gas dissolves in methanol, including CO2 and H2S. After washing, methanol is subjected to vacuum flash distillation, low-pressure desorption, and N2 gas extraction to remove most of the CO2 in methanol. The methanol rich in H2S is heated and gas extracted in a hot regeneration tower for regeneration, and the hydrogen bond between methanol and H2S is broken. The flow rate of acidic gas rich in H2S coming out from the top of the hot regeneration tower is about 1870m3/h (standard state), of which H2S is 25.38% (volume fraction, the same below), COS is 0.02%, and CO2 is 72.35%. After cooling and separation, it is sent to the sulfur recovery unit.

20230315044454925.png

2生物脫硫的原理

2. Principles of Biological Desulfurization

生物脫硫技術主要是采用硫黃桿菌來處理酸性氣中的H2S,而硫黃桿菌是在自然界中產生,通過遺傳培育或改良而來。硫黃桿菌的繁殖生長很快,4h就可以翻倍且成對數增長,而且對工藝條件、生產環(huán)境等都有很強的適應性,其生長過程中所需的能量主要來源于硫化物的氧化過程,碳源則來自于酸性氣中的CO2。

Biological desulfurization technology mainly uses Thiobacillus to treat H2S in acidic gas, and Thiobacillus is produced in nature through genetic cultivation or improvement. Thiobacillus proliferates and grows rapidly, doubling and growing logarithmically within 4 hours, and has strong adaptability to process conditions and production environments. The energy required for its growth mainly comes from the oxidation process of sulfides, while the carbon source comes from CO2 in acidic gases.

來自低溫甲醇洗單元的酸性氣進入H2S吸收塔內與堿性溶液逆向接觸,酸性氣中的H2S和CO2被堿液吸收分別生成HS-、CO32-、HCO3-(H2S+OH-=HS-+H2O,H2S+CO32-=HS-+HCO3-,CO2+OH-=HCO3-,HCO3-+OH-=CO32-+H2O)。

The acidic gas from the low-temperature methanol washing unit enters the H2S absorption tower and comes into reverse contact with the alkaline solution. The H2S and CO2 in the acidic gas are absorbed by the alkaline solution to generate HS -, CO32-, and HCO3- (H2S+OH -=HS -+H2O, H2S+CO32-=HS -+HCO3-, CO2+OH -=HCO3-, HCO3-+OH -=CO32-+H2O), respectively.

吸收了酸性氣中H2S和CO2的溶液進入生物反應器底部與空氣混合,溶液中的HS-與O2反應生成硫和OH-(2HS-+O2=2S+2OH-,8SxHS-+4O2=S8+8Sx+8OH-),溶液中的CO32-、HCO3-分解釋放出OH-和CO2(CO32-+H2O=HCO3-+OH-;HCO3-=CO2+OH-),堿液得到再生后循環(huán)使用。生物反應器內若O2過量,會發(fā)生副反應生成硫酸鹽和硫代硫酸鹽(HS-+2O2=SO42-+H+,2HS-+2O2= S2O32-+H2O)。在高濃度硫化物的作用下,生物菌的活性會降低,產生的硫酸鹽和硫代硫酸鹽增多。為減少副反應的發(fā)生,須合理控制生物反應器內空氣的通入量,防止O2過剩。同時將硫黃脫水機分離出來的液體排至污水處理裝置,并向生物反應器內補充新鮮水和堿液維持系統(tǒng)平衡。

The solution that absorbs H2S and CO2 from acidic gas enters the bottom of the bioreactor and mixes with air. The HS - in the solution reacts with O2 to generate sulfur and OH - (2HS -+O2=2S+2OH -, 8SxHS -+4O2=S8+8Sx+8OH -). The CO32- and HCO3- in the solution decompose to release OH - and CO2 (CO32-+H2O=HCO3-+OH -; HCO3-=CO2+OH -), and the alkaline solution is regenerated and reused. If there is excessive O2 in the bioreactor, side reactions will occur to generate sulfates and thiosulfates (HS -+2O2=SO42-+H+, 2HS -+2O2=S2O32-+H2O). Under the action of high concentrations of sulfides, the activity of biological bacteria will decrease, and the production of sulfates and thiosulfates will increase. To reduce the occurrence of side reactions, it is necessary to reasonably control the air intake in the bioreactor to prevent excess O2. At the same time, the liquid separated by the sulfur dehydrator is discharged to the sewage treatment device, and fresh water and alkaline solution are added to the bioreactor to maintain system balance.

本文由生物脫硫友情奉獻.更多有關的知識請點擊: http://m.ydjdys.com真誠的態(tài)度.為您提供為全面的服務.更多有關的知識我們將會陸續(xù)向大家奉獻.敬請期待.

This article is dedicated to the friendship of biological desulfurization. For more related knowledge, please click: http://m.ydjdys.com Sincere attitude. We will provide you with comprehensive service. We will gradually contribute more relevant knowledge to everyone. Stay tuned

相關產品 我們的存在,是為了更好的服務于沼氣等可燃氣體凈化及利用行業(yè)
一路向北在线观看完整高清BD| 国产精品扒开腿做爽爽爽a片小说| 凌晨三点看的片WWW高清| 免费不卡在线观看av| 精品亚洲成A人片在线观看少妇| 久久久久夜色精品国产明星| 久久A级毛片免费观看| 噜噜狠狠色综合久色a站网址| 全彩爆乳无翼口工漫画大全| 久久久久久久久波多野高潮| 白丝jk校花娇喘求饶白浆露出| xxxx18一20岁hd| 色精阁久艾草国产www| 无人在线完整免费高清观看| 美女无遮掩内衣胸罩| 少妇人妻无码专区视频| 强行开发她的尿孔h| 99999久久久久久亚洲| 免费看撕开奶罩揉吮奶头视频| 精品欧美一区二区三区成人片在线| 男宠用下面叫醒公主h| 国产精品久久久久久吹潮| 国产精品网站亚洲发布| 色婷婷在线精品国自产拍| 欧洲美女多人群交视频| 大陆国语对白国产av片| 暴虐SM灌浣肠调教| 麻豆视传媒官网免费观看| 装睡被陌生人摸出水好爽| 小雪嗯快啊高潮了喷水了| 女人自己扒荫道口自慰| 毛片亚洲av无码精品国产午夜| 小雪被老汉各种姿势玩| 亚洲 欧美 自拍 第15页| 中文乱码人妻系列一区二区| 国产一区二区三区成人欧美日韩在线观看 | 仙踪林果冻传媒一区二区| 亚洲欧美精品午睡沙发| 国产精品无圣光一区二区| 多人交free性glasses| 老汉掀起衣服含着奶头h|