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href="/list/75.html?PHPSESSID=l1tt1jk1r67got9okogg5dg2t4">標(biāo)準(zhǔn)氣體</a> </li> <div id="gseegkuu" class="clear"></div> </ul> </div> </div>  <div id="gseegkuu" class="about proxqnr clear"> <h3 class="xwbt">氮?dú)?/h3> <h5 class="time">發(fā)布時(shí)間：2020-07-23 信息來源：畢節(jié)市天利氣體有限責(zé)任公司 -官網(wǎng)</h5> <hr /> <p style="text-align: center;"><img src="/Uploads/Ueimages/20200723/1595488135129056.jpg" title="1595488135129056.jpg" alt="022.jpg"/></p><p><br/></p><p style="white-space: normal; text-indent: 2em;"><span style="font-size: 14px;">氮在化學(xué)工業(yè)、石油工業(yè)、電子工業(yè)、食品工業(yè)、金屬冶煉及加工業(yè)等領(lǐng)域有著廣泛的用途。</span></p><p style="white-space: normal; text-indent: 2em;"><span style="font-size: 14px;">1、石油天燃?xì)饧安擅汗I(yè)中的應(yīng)用</span></p><p style="white-space: normal; text-indent: 2em;"><span style="font-size: 14px;">油井內(nèi)充入氮?dú)獠坏梢蕴岣呔畠?nèi)壓力，增大采油量，充入的氮?dú)膺€可以作為鉆桿測(cè)度中的緩沖墊，避免了井內(nèi)泥槳壓力擠扁下部試管柱的可能性。此外，在進(jìn)行酸化、壓裂、水力噴孔、水力封隔器坐封等井下作業(yè)中，也要用到氮?dú)?。在天然氣中充填氮?dú)饪梢越档蜔嶂怠Ｔ谠透鼡Q管道時(shí)，可用液氮燒注兩端物料，使之固化封堵。</span></p><p style="white-space: normal;"><br/></p><p style="white-space: normal; text-indent: 2em;"><span style="font-size: 14px;">2、化學(xué)工業(yè)中的應(yīng)用</span></p><p style="white-space: normal; text-indent: 2em;"><span style="font-size: 14px;">氮是合成氨的主要原料。氨合成所需的氮無需分離和提純，直接來源于空氣。在氨合成氣的生產(chǎn)過程中，空氣中的氧與碳?xì)浠衔镌线M(jìn)行高溫催化反應(yīng)，經(jīng)變換、脫碳、甲烷化等工序，生成以氫為主含少量甲烷、微量一氧化碳和二氧化碳的混合氣，空氣中的氮和氬不參與反應(yīng)，直接進(jìn)入合成氣，從而獲得以氫和氮為主的氨合成氣。由于氨合成中，氧、一氧化碳、二氧化碳易使合成催化劑中素毒，甲烷和氬系合成惰性物質(zhì)，大量積累會(huì)降低合成效率，采用液氮洗滌工藝凈化合成氣，可以延長(zhǎng)催化劑使用壽合，提高氨合成效率。</span></p><p style="white-space: normal;"><br/></p><p style="white-space: normal; text-indent: 2em;"><span style="font-size: 14px;">3、冶金氏業(yè)中的應(yīng)用</span></p><p style="white-space: normal; text-indent: 2em;"><a href="/?PHPSESSID=l1tt1jk1r67got9okogg5dg2t4" target="_self"><span style="font-size: 14px;">天利氣體</span></a><span style="font-size: 14px;">談及氮?dú)庠谝苯鸸I(yè)中主要是作保護(hù)氣和吹掃氣。在軋鋼和金屬熱處理的過程中，由于氮?dú)獾谋U(kuò)，減少金屬的高溫氧化，使表面光潔。在有色金屬冶煉爐中充入氮?dú)猓梢越档脱趿亢蜏囟?，減少氧化，提高產(chǎn)品純度。用氮?dú)獯祾咪撍?，使鋼中的氫含量降低，提高產(chǎn)品的強(qiáng)度。在高爐開工時(shí)吹入86%的氮?dú)?，可降低焦炭消耗，延長(zhǎng)使用壽命。</span></p><p><br/></p> <br> <br> <hr /> <ul class="news_ds_ul clf"> <li><span>上一條：<a href='/view_66/96.html?PHPSESSID=l1tt1jk1r67got9okogg5dg2t4'>氮?dú)?/a></span></li> <li><span>下一條：<a href="/view_66/94.html?PHPSESSID=l1tt1jk1r67got9okogg5dg2t4">氮?dú)?/a></span></li> </ul> <style> .news_ds_ul {font-size: 18px;} .news_ds_ul span{font-size: 18px; line-height: 34px;} .news_ds_ul span a{font-size: 18px;} @media (max-width: 640px){ .cases_list li:nth-child(2){ display: block!important; } } </style> </div> </div>  <footer data-scroll-reveal=" " style="width: 100%;background: #005e96; float: left; margin-top: 2%;"> <div style=" width: 98%; 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