日本久久久久久,久久精品欧美一区二区三区不卡,午夜福利无码AV,日韩黄色大片

你好,歡迎訪問濟南金昊化工有限公司!

專注品質,信賴服務

我們用心做產品服務

咨詢熱線:

13655318786

行業(yè)新聞

您現在的位置: 網站首頁>>新聞中心>>行業(yè)新聞一種順酐的連續(xù)精制系統(tǒng)的制作方法

一種順酐的連續(xù)精制系統(tǒng)的制作方法

來源:http://www.m9660.cn/ 日期:2023-06-07 發(fā)布人: 瀏覽次數:0
近年來,國內順酐的表觀消費量不斷增加,順酐是具有許多用途的單體和中間體,主要用于不飽和聚酯樹脂和1,4_丁二醇,還可以用來增塑劑、表面涂料、農用化學品、潤滑劑、蘋果酸和富馬酸等。
In recent years, the apparent consumption of maleic anhydride in China has been continuously increasing. Maleic anhydride is a monomer and intermediate with many uses, mainly used in the production of unsaturated polyester resin and 1,4_ Butanediol can also be used to produce plasticizers, surface coatings, agricultural chemicals, lubricants, malic acid, and fumaric acid.
順酐的方法有苯法、正丁烷法、碳四烯烴法等,其中苯法作為傳統(tǒng)原料,被廣泛用來順酐,傳統(tǒng)順酐中精制系統(tǒng)都是采用一塔一釜的間歇式過程,工藝流程復雜,成品質量不易控制,給企業(yè)的經濟效益帶來影響,且產生較多的廢渣以及污水,再增加環(huán)境污染的同時,還會大大縮短洗釜的周期,容易腐蝕設備,增加企業(yè)的成本。
The methods for producing maleic anhydride include benzene method, n-butane method, carbon tetraolefin method, etc. Among them, benzene method is widely used as a traditional raw material to produce maleic anhydride. The refining system in traditional maleic anhydride production uses a batch production process with one tower and one kettle, which is complex in process flow and difficult to control the quality of finished products, which affects the economic benefits of enterprises and generates a lot of waste residue and sewage, which increases environmental pollution, It will greatly shorten the washing cycle of the kettle, easily corrode the equipment, and increase the cost of the enterprise.
順酐廠家認為,這里要解決的問題是提供一種工藝設計合理、成品質量穩(wěn)定、收率高的順酐的連續(xù)精制系統(tǒng)。
The maleic anhydride manufacturer believes that the problem to be solved here is to provide a continuous refining system for producing maleic anhydride with reasonable process design, stable product quality, and high yield.
順酐廠家
為解決上述技術問題,本發(fā)明采用的技術方案是一種順酐的連續(xù)精制系統(tǒng),包括精制釜、第二精制釜、恒沸脫水塔、溶劑回收塔以及精制塔,所述恒沸脫水塔上設有進酸水管以及加粗酐管,所述精制釜與恒沸脫水塔的下方通過管道連接且管道上設有閥門,精制釜與溶劑回收塔通過管道連接且管道上同樣設有閥門,所述第二精制釜與恒沸脫水塔的下方通過管道連接且管道上設有閥門,第二精制釜與溶劑回收塔通過管道連接且管道上同樣設有閥門,精制釜、第二精制釜分別與恒沸脫水塔底端的管道連通且兩支管道上分別設有閥門,恒沸脫水塔上設有恒沸冷凝器,溶劑回收塔的上方設有溶劑冷凝器,且溶劑冷凝器下方設有第二二甲苯罐,溶劑回收塔的底端通過第二泵與精制塔連接,精制塔的上方連接有精制冷凝器,精制冷凝器與順酐冷凝器進口連接,且順酐冷凝器出口與第二成品罐連接,所述恒沸脫水塔還通過管道分別與成品罐、粗酐罐以及二甲苯罐連接。進一步,所述加粗酐管設在恒沸脫水塔的中間位置。保證粗酐在加入過程中就完全脫水,從而提聞精制收率。進一步,所述恒沸冷凝器上設有循環(huán)水出口以及循環(huán)水入口。減少溫水用量的負荷。進一步,所述溶劑回收塔通過泵與第三二甲苯罐連接。進行流量穩(wěn)定的強制回流,從而使塔頂溫度穩(wěn)定。本發(fā)明具有的優(yōu)點和積極效果是由于采用上述技術方案,一塔一釜恒沸脫水,兩塔一釜精餾脫成品同時連續(xù)進行;所述恒沸脫水塔還通過管道分別與成品罐、粗酐罐以及二甲苯罐連接。使恒沸脫水塔既可以進行連續(xù)精制中的脫水部分,也可以進行整套的間歇式順酐精致;成品質量穩(wěn)定,收率高;減少廢渣的產生量;洗釜周期延長15-20天,減少洗釜廢水的產生量。本發(fā)明使順酐的精制過程更加方便;具有結構簡單,維修方便,加工成本低、效率高等優(yōu)點。
To solve the above technical problems, the technical solution adopted by the present invention is a continuous refining system for producing maleic anhydride, including a first refining kettle, a second refining kettle, a constant boiling dehydration tower, a solvent recovery tower, and a refining tower. The constant boiling dehydration tower is equipped with an acid inlet water pipe and a coarse anhydride pipe, and the lower part of the first refining kettle and the constant boiling dehydration tower is connected through a pipeline with a valve on the pipeline, The first refining kettle is connected to the solvent recovery tower through a pipeline, and the pipeline is also equipped with valves. The lower part of the second refining kettle and the constant boiling dehydration tower is connected through a pipeline, and the pipeline is equipped with valves. The second refining kettle is connected to the solvent recovery tower through a pipeline, and the pipeline is also equipped with valves. The first refining kettle and the second refining kettle are respectively connected to the pipeline at the bottom of the constant boiling dehydration tower, and valves are respectively installed on the two pipelines, There is a constant boiling condenser on the constant boiling dehydration tower, a solvent condenser above the solvent recovery tower, and a second dimethylbenzene tank below the solvent condenser. The bottom end of the solvent recovery tower is connected to the refining tower through a second pump, and a refining condenser is connected above the refining tower. The refining condenser is connected to the inlet of the maleic anhydride condenser, and the outlet of the maleic anhydride condenser is connected to the second finished product tank, The constant boiling dehydration tower is also connected to the first finished product tank, crude anhydride tank, and first xylene tank through pipelines. Furthermore, the thickened anhydride tube is located in the middle of the constant boiling dehydration tower. Ensure that the crude anhydride is completely dehydrated during the addition process, thereby improving the refining yield. Furthermore, the constant boiling condenser is equipped with a circulating water outlet and a circulating water inlet. Reduce the load of warm water usage. Furthermore, the solvent recovery tower is connected to a third xylene tank through a first pump. Conduct a forced reflux with stable flow rate to stabilize the tower top temperature. The advantages and positive effects of the present invention are due to the adoption of the aforementioned technical scheme, where one tower and one kettle are subjected to constant boiling dehydration, and two towers and one kettle are subjected to continuous distillation of the finished product simultaneously; The constant boiling dehydration tower is also connected to the first finished product tank, crude anhydride tank, and first xylene tank through pipelines. The constant boiling dehydration tower can perform both the dehydration part of continuous refining and the complete batch production of maleic anhydride; Stable product quality and high yield; Reduce the generation of waste residue; The washing cycle is extended to 15-20 days to reduce the production of washing wastewater. The present invention makes the refining process of maleic anhydride more convenient; It has the advantages of simple structure, convenient maintenance, low processing cost, and high production efficiency.
一種順酐的連續(xù)精制系統(tǒng)的制作方法相關事項就講解到這里,還有疑惑或者需求,就隨時來我們網站http://www.m9660.cn咨詢吧!
That's all for the production method of a continuous refining system for producing maleic anhydride. If you have any doubts or needs, feel free to come to our website at any time http://www.m9660.cn Consult!

相關新聞
欧美日韩精品一二三区| 欧美一区二区三区啪啪免费| 久久久久亚洲精品国产手机av| 精品国产乱码久久久久夜深人妻 | 一级黄片视频在收看| 小黄片日韩| 免费白浆电影在线观看| 99婷婷| 欧美自慰综合网| Av无码在线网站| 国产成人精品国内自产拍免费看| 黄色片一区二区| 国产熟女一区二区三区四区五区| 亚洲影院ww| 偷偷色2019| 女同互舔| 婷婷色综| 一本大道久久a久久精品综合1| 欧美hairy多毛pics大全| 日韩高清人妻| 成人午夜视频在线| mm131极品翘臀尤物美女视频 | 999AV视频在线观看| 亚洲综合色导航| 亚洲精品国产精品乱码不卡√香蕉| 亚洲精品40p| 外国大片| 亚洲AV永久无码精品无码少妇| 日韩无码高清一区| 亚洲国产AV无码专区亚洲AVL| 久久中文字幕亚欧精品无码AV| 久久免费视频国产| 成人免m免费| 色综合加勒比一木道| 欧美久久久网站| 操AV在线| 日韩高清无码2| 欧美黑人久久综合| 中文字幕日本人妻1区2区 | 欧美一区二区三区四区乱码小说| 欲妇放荡叫床很浪欠c|