深山猎户粗大hh蜜婉,高洁在公车被灌满jing液,国产精品videossex久久发布,精品国产乱码久久久久久1区2区

你好,歡迎訪問濟(jì)南金昊化工有限公司!

專注品質(zhì),信賴服務(wù)

我們用心做產(chǎn)品服務(wù)

咨詢熱線:

13655318786

常見問題

您現(xiàn)在的位置: 網(wǎng)站首頁>>新聞中心>>常見問題 回收順酐的工藝方法有哪些?

回收順酐的工藝方法有哪些?

來源:http://www.zhaoxwol.com/ 日期:2021-08-20 發(fā)布人: 瀏覽次數(shù):0
一種回收順酐的工藝方法。該方法是以正丁醇與含有順酐生成氣進(jìn)行酯化反應(yīng)生成單酯,再將單酯分解成正丁醇和順酐。該工藝的特征在于設(shè)置一個(gè)熱分解反應(yīng)精餾塔.
The invention relates to a process for recovering maleic anhydride. In this method, n-butanol is esterified with the gas containing maleic anhydride to produce a monoester, and then the monoester is decomposed into n-butanol and maleic anhydride. The process is characterized by a thermal decomposition reactive distillation column
它以酯化反應(yīng)生成的單酯和一定含量的二酯為原料,在相應(yīng)的工況下在塔內(nèi)進(jìn)行反應(yīng)蒸餾,塔頂產(chǎn)出正丁醇回酯化反應(yīng)塔循環(huán)使用,塔底產(chǎn)出順酐和二酯去精品精餾塔進(jìn)行順酐精制。具有吸收快、吸收收率高、不腐蝕設(shè)備、無三廢、、操作可靠特點(diǎn)。
It takes the monoester and a certain amount of diester generated by esterification reaction as raw materials, carries out reactive distillation in the tower under corresponding working conditions, the n-butanol produced at the top of the tower is recycled to the esterification reaction tower, and the maleic anhydride and diester produced at the bottom of the tower are sent to the fine distillation tower for maleic anhydride refining. It has the characteristics of fast absorption, high absorption yield, no corrosion of equipment, no three wastes, energy saving and reliable operation.
正丁醇在室溫?zé)o催化劑條件下,與含有順酐反應(yīng)生成氣反應(yīng)生成單酯(MBM),再將單酯加熱反應(yīng),生成正丁醇和順酐的工藝路線回收順酐的新工藝,它由酯化反應(yīng)吸收塔1,正丁醇予處理塔2和冷凝器5,冷卻器6,及精品精餾塔4和冷卻器8所構(gòu)成,其特征在于,設(shè)置一個(gè)熱分解反應(yīng)精餾塔3及塔頂冷凝器7.
Under the condition of no catalyst at room temperature, n-butanol reacts with the gas containing maleic anhydride to produce monoester (MBM), and then the monoester is heated and reacted to produce n-butanol and maleic anhydride. It is a new process for recovering maleic anhydride. It is composed of esterification reaction absorber 1, n-butanol pretreatment tower 2, condenser 5, cooler 6, fine distillation tower 4 and cooler 8, The utility model is characterized in that a thermal decomposition reactive distillation column 3 and a tower top condenser 7 are arranged
該塔以酯化反應(yīng)吸收塔塔底產(chǎn)出的單酯和一定量的二酯為原料,在進(jìn)料溫度為50℃-120℃,塔頂真空度為300-750mmHg,回流比為1-3的工況下實(shí)行熱分解反應(yīng)精餾,塔頂產(chǎn)出純正丁醇經(jīng)冷凝器7送回酯化反應(yīng)吸收塔1循環(huán)使用,塔底產(chǎn)出順酐與二酯送精品精餾塔4進(jìn)行順酐精制。
The tower uses the monoester and a certain amount of diester produced at the bottom of the esterification reaction absorption tower as raw materials. Under the working conditions of feed temperature of 50 ℃ - 120 ℃, vacuum degree at the top of the tower of 300-750mmhg and reflux ratio of 1-3, the thermal decomposition reaction distillation is carried out. The pure butanol produced at the top of the tower is sent back to the esterification reaction absorption tower 1 for recycling through condenser 7, Maleic anhydride and diester produced at the bottom of the tower are sent to high-quality distillation tower 4 for maleic anhydride refining.
說到這里,相信大家對(duì)順酐也有了一個(gè)大致的了解了吧。了解更多相關(guān)內(nèi)容可以直接關(guān)注http://www.zhaoxwol.com如果您還有什么問題,歡迎來電咨詢,或者到公司參觀考察,期待您的光臨!
At this point, I believe you have a general understanding of maleic anhydride. For more information, you can pay direct attention to it http://www.zhaoxwol.com If you have any questions, welcome to inquire or visit the company. We look forward to your presence!

相關(guān)新聞
一本大道久久东京热无码av| 把她抵在试衣间疯狂律动| 天天摸天天做天天爽水多| 日本精品一区二区三区在线视频| 人禽无码做爰在线观看| 锕锕锕锕锕锕好大好湿| 337p日本欧洲亚洲大胆色噜噜| 国产精品久久久久免费a∨| 亚洲国产成人一区二区精品区| 野花日本大全免费观看3中文版| 深灬深灬深灬深灬一点| 双乳被一左一右吃着动态图| 玩弄japan白嫩少妇hd| 中文无码av一区二区三区| 國産麻豆av天美傳媒| 国产99久久九九免费精品无码| 韩国19禁无遮挡啪啪无码网站| 衣服被扒开强摸双乳18禁网站| 糟蹋稚嫩的身体发泄h| 亚洲成A人一区二区三区| chinese国产xxxx实拍| 老司机午夜福利视频| 日本少妇做爰全过| 啊快捣烂了啦h男男| 娇妻玩4p被三个男人伺候电影| 美女扒开尿眼让男人桶爽视频| 天堂а√在线中文在线| 欧美成人精品高清在线观看| 成人视频网站| 国产成人免费ā片在线观看| 娇妻被交换粗又大又硬无| 精品人妻av无码一区二区三区| 人人添人人澡人人澡人人人人| 漂亮人妻被强了bd影片| 闺蜜撕开的奶罩猛吸我的奶| 妽妽用身体满足了我| 下一站婚姻免费完整版在线观看| 小柔在公厕被灌满jing液| 美女露?0的奶头无挡挡| 婷婷丁香五月久久综合啪啪图区| 少妇性XXXXXXXXX色|