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

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:的工藝細(xì)節(jié)描述

順酐廠家:的工藝細(xì)節(jié)描述

來源:http://www.zhaoxwol.com/ 日期:2024-04-30 發(fā)布人: 瀏覽次數(shù):0

順酐的主要方法有苯氧化法、丁烯氧化法和正丁烷氧化法,但仍以苯氧化法為主。1.苯氧化法苯在V-Mo-P系催化劑作用下,在固定床中發(fā)生氧化反應(yīng),生成順丁烯二酸酐,反應(yīng)溫度為365℃(反應(yīng)床層也可用沸騰床,但消耗高)。然后用水吸收生成順丁烯二酸,再經(jīng)共沸脫水和精餾,刮片得到成品。2.丁烷(或丁烯)氧化法丁烷(或丁烯)在V-Mo催化劑作用下,經(jīng)空氣或氧氣氧化生成順酐,反應(yīng)溫度350-400℃。然后再經(jīng)水吸收,脫水和精制得到成品。

The main production methods of maleic anhydride include benzene oxidation, butene oxidation, and n-butane oxidation, but benzene oxidation is still the main method. 1. Benzene oxidation method: Benzene undergoes oxidation reaction in a fixed bed under the action of V-Mo-P catalyst, generating maleic anhydride at a reaction temperature of 365 ℃ (boiling bed can also be used for the reaction bed layer, but the consumption is high). Then, it is absorbed with water to generate maleic acid, which is then subjected to azeotropic dehydration and distillation, and scraped to obtain the finished product. 2. Butane (or butene) oxidation method: Butane (or butene) is oxidized to maleic anhydride by air or oxygen under the action of V-Mo catalyst, at a reaction temperature of 350-400 ℃. Then, it is absorbed by water, dehydrated, and refined to obtain the finished product.

順酐的合成方法主要有苯氧化法、丁烯氧化法、丁烷氧化法等,目前上多數(shù)采用苯氧化法,即以苯為原料,經(jīng)催化氧化得到順酐。

The synthesis methods of maleic anhydride mainly include benzene oxidation, butene oxidation, butane oxidation, etc. Currently, most production uses benzene oxidation method, which uses benzene as the raw material and catalyzes oxidation to obtain maleic anhydride.

20230310113906133.jpg

采用固定床或沸騰床反應(yīng)器,在V-Mo-P系催化劑作用下,用空氣將苯氧化成順丁烯二酸酐,反應(yīng)溫度為365℃。然后用水吸收生成順丁烯二酸水溶液,再用二甲苯進(jìn)行共沸蒸餾脫水得順酐,減壓精餾得成品。

Using a fixed bed or fluidized bed reactor, benzene is oxidized to maleic anhydride with air under the action of V-Mo-P catalyst at a reaction temperature of 365 ℃. Then, it is absorbed with water to generate an aqueous solution of maleic acid, which is then subjected to azeotropic distillation and dehydration with xylene to obtain maleic anhydride. Finally, the finished product is obtained by vacuum distillation.

本文由順酐廠家友情奉獻(xiàn).更多有關(guān)的知識請點(diǎn)擊:http://www.zhaoxwol.com真誠的態(tài)度.為您提供為的服務(wù).更多有關(guān)的知識我們將會陸續(xù)向大家奉獻(xiàn).敬請期待.

This article is a friendly contribution from maleic anhydride manufacturers. For more information, please click: http://www.zhaoxwol.com Sincere attitude. We will provide you with comprehensive service. We will gradually contribute more relevant knowledge to everyone. Stay tuned

相關(guān)新聞
国产a√精品区二区三区四区| 精品久久人人爽天天玩人人妻| 国产性一交一乱一伦一色一情| 精品无码久久久久久久久水蜜桃| 老狼影院成年女人大片| 国产精品污www在线观看| 护士做爰乱高潮全过程| 麻豆亚洲av熟女国产一区二| 色偷拍 自怕 亚洲 30p| 再深点灬舒服灬太大了视频| 一本久道久久综合狠狠躁| 欧美精品一区二区三区在线观看| 美男被强行糟蹋np各种play| 免费看美女被靠到爽的视频| 成人在色线视频在线观看免费社区| 四虎成人精品在永久免费| 精品久久久久久亚洲中文字幕| 无码中文字幕日韩专区| 国内精品久久久久精免费| 欧美午夜一区二区福利视频| 亚洲色精品三区二区一区| 国产精品18久久久久久vr| 一二三四电影在线观看| 中老年妇女加肥加大女上衣| 妻子4免费完整版中文版| 国模雨珍浓密毛大尺度150P| 丁香花高清在线观看| 亚洲女初尝黑人巨高清| 老头扒开粉嫩的小缝亲吻| 亚洲午夜精品久久久久久人妖| 少妇撒尿w搡bbb搡wbbb搡| 亚洲av无码专区在线观看下载| 国产一区二区三区在线电影| 亚洲av无码一区二区二三区入口| 无码人妻丰满熟妇精品区| 少妇高潮毛片色欲AVA片| 狠狠色婷婷久久综合频道毛片| 无码无遮大尺度床戏视频网站| 中文字幕av一区| 性xxxx欧美孕妇奶水| 国产亲妺妺乱的性视频播放|