大肉大捧一进一出,无限资源在线观看片中文在线,在电影院里拨开内裤挺进,校花的凌羞辱日记高h女女

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

公司新聞

您現(xiàn)在的位置: 網(wǎng)站首頁>>新聞中心>>公司新聞順酐廠家:順酐工藝流程

順酐廠家:順酐工藝流程

來源:http://www.i6sf.com/ 日期:2024-05-15 發(fā)布人: 瀏覽次數(shù):0

  順酐的工藝主要分為以下三步:

The production process of maleic anhydride mainly consists of the following three steps:

  以苯、碳四餾分或正丁烷為原料催化氧化制順酐;

Catalytic oxidation of benzene, C4 fraction or n-butane to produce maleic anhydride;

  從氧化生成的混合氣中回收順酐得到粗酐;

Recovering maleic anhydride from the mixed gas generated by oxidation to obtain crude anhydride;

  精制粗酐從而獲得順酐產(chǎn)品。順酐的技術(shù)路線主要分為苯氧化法、碳四烯烴法、苯酐副產(chǎn)法、正丁烷氧化法 4 種。正丁烷氧化制順酐是國際上近年來發(fā)展很快的正丁烷利用途徑,正丁烷法順酐工藝按反應(yīng)器分為固定床工藝和流化床工藝,其后處理工段所采用的工藝有兩種技術(shù)方法,即水吸收法和溶劑吸收法。下面為大家著重介紹一下有機(jī)溶劑吸收法。

20191108042820322.jpg

Refine crude anhydride to obtain maleic anhydride products. The technical routes for the production of maleic anhydride are mainly divided into four types: benzene oxidation method, carbon tetraolefin method, phthalic anhydride by-product method, and n-butane oxidation method. The oxidation of n-butane to maleic anhydride is a rapidly developing way of utilizing n-butane internationally in recent years. The production process of n-butane based maleic anhydride can be divided into fixed bed process and fluidized bed process according to the reactor. There are two technical methods used in the post-treatment section, namely water absorption method and solvent absorption method. Below, we will focus on introducing to you organic solvent absorption method.

  有機(jī)溶劑吸收法工藝:在采用丁烷法順酐的初期,主要是一些苯法裝置通過更換催化劑實現(xiàn),就是新建的裝置工藝也與苯法基本一致,均為水吸收法回收。由于丁烷氧化反應(yīng)生成少量的乙酸和丙烯酸,而苯氧化反應(yīng)幾乎不生成乙酸和丙烯酸,另外丁烷氧化生成的水也比苯氧化多 ,所以丁烷法水吸收工藝遇到的腐蝕和堵塞問題要比苯法多。為了減輕腐蝕,提高順酐收率,降低能耗,各公司在改進(jìn)丁烷氧化催化劑的同時,加強(qiáng)了對順酐回收工藝的研究。

Organic solvent absorption process: In the initial stage of producing maleic anhydride using the butane method, some benzene process units mainly achieved this by replacing catalysts, and even the newly built unit process is basically the same as the benzene process, all of which are recovered by water absorption method. Due to the fact that butane oxidation produces a small amount of acetic acid and acrylic acid, while benzene oxidation produces almost no acetic acid and acrylic acid, and butane oxidation produces more water than benzene oxidation, the butane water absorption process encounters more corrosion and blockage problems than the benzene method. In order to reduce corrosion, increase the yield of maleic anhydride, and reduce energy consumption, various companies have strengthened their research on the recovery process of maleic anhydride while improving the butane oxidation catalyst.

以上就是有關(guān):順酐廠家 的介紹,想了解更多的內(nèi)容請點擊:http://www.i6sf.com 我們將會全心全意為您提供滿分服務(wù),歡迎您的來電!

The above is an introduction to manufacturers of maleic anhydride. For more information, please click: http://www.i6sf.com We will wholeheartedly provide you with full score service. Welcome to call us!

相關(guān)新聞
成人a片99产无码小视频| 巜疯狂的少妇4做爰| 老人玩小处雌女视频| 久久久久亚洲av成人网人人软件| 亚洲爆乳无码一区二区三区| 再深点灬舒服灬受不了了视频| 强壮公弄得我次次高潮小说| 疯狂做受xxxx国产| 欧美国产高清欧美内衣办| 嗯h客厅h禁欲教授| 国产精品美女www爽爽爽视频| 九色porny真实丨国产大胸| 性色做爰片在线观看ww| 清冷校草受灌满哭求饶bl| 亚洲精品无码久久| 被闺蜜男朋友强肉h高干| 中国女人做爰a片| 亚洲国产日韩a在线欧美2020| 日韩av无码中文无码不卡电影| 传家在线观看免费观看完整版| 五月槐花香电视剧全集免费| 被各种陌生人np调教灌尿| 把你cao烂好不好高h| 色偷偷人人澡久久超碰97位| 一本一道av无码中文字幕﹣百度| 国产真实乱对白精彩| 啊灬啊灬啊灬快灬深视频无遮掩| 成人性爱视频在线观看| 男ji大巴进入女人的视频| 少妇洁白无删减版178章| 久久av色欲av久久蜜桃麻豆| 偷拍农民工嫖妓bbbbb| 嗯啊小sao货奶头好硬视频| 亚洲av日韩av永久无码色欲| 国产亲妺妺乱的性视频| 机长脔到她哭h粗话h| 高潮videossex潮喷另类| 秋霞影视欧美高清av片| spy3wc撒spy3wc撒尿| 毛片免费视频| 久久久久亚洲av无码专区|