欧美色亚洲色,欧美日韩国产亚洲成人自拍,中文字幕人妻一区二区在线视频侦探,熟女一区二区少妇

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://m9660.cn/ 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(shí)請(qǐng)點(diǎn)擊:http://m9660.cn真誠(chéng)的態(tài)度.為您提供為的服務(wù).更多有關(guān)的知識(shí)我們將會(huì)陸續(xù)向大家奉獻(xiàn).敬請(qǐng)期待.

This article is a friendly contribution from maleic anhydride manufacturers. For more information, please click: http://m9660.cn 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
欧美女性久久| 日本黄在线免费不卡视频| 国产麻豆九九| 精品国产精品国产精品| 殴美乱伦视频| 人人干人人爽天天干| 亚洲日韩午夜片| 不卡的日韩小黄片| 一区二区三区五区七区美女| 啊操我在线| gaV在线黄色| 97人妻人人揉人人澡人| 亚洲综合中文字幕经典av在线| 91久久酒店| 欧美在线视频播放香蕉| 亚洲美女高潮精品| 久久做視頻| 日韩福利电影在线一区二区三区三州| 亚洲一级黄色AAA| 亚洲欧美在线字幕小说| 日韩欧美在线小| 蜜桃视频嘿咻嘿咻| 19岁日B免费| 熟女中文字母| AV成人色碰| 深夜传媒精品| 午夜黑人| 波多野结衣在线日韩| 日本韩欧美一二区三区| 亚洲麻豆精品小说| 日韩人妻一二区| 成熟女人一区二区二区| 亚州aⅤ综合aV一区久久| 日B久久久久| ai明星换脸日本不卡二区| 草草久久精品国产一区二区三区| 无码二区三区| 开心色在线丝袜播放| 欧美激情第一页五月天婷婷| 青草青青av| 国产天堂久久|