本文選題：變壓吸附 + 提取率�。� 參考：《北京化工大學(xué)》2017年碩士論文

【摘要】：本文的主要研究對象是山東華魯恒升化工股份有限公司建設(shè)的國內(nèi)首套5萬噸/年乙二醇配套變壓吸附裝置。該裝置采用四川亞聯(lián)高科技有限責(zé)任公司成套設(shè)計的15000 Nm3/h變壓吸附工藝包,主要提供純度達(dá)99.5%以上的氫氣,供乙二醇車間加氫崗位和己二酸醇酮崗位使用。本文重點討論并解決該裝置生產(chǎn)過程中出現(xiàn)的以下四個問題,實際效果良好。1.原料氣中夾帶甲醇超標(biāo),造成吸附劑加重粉化。改進(jìn)后,消除了原料氣帶甲醇的危害,延長了吸附劑使用壽命,提高了機(jī)組運行周期,攔截粉化的吸附劑,減小了對解析氣接受崗位的影響。2.產(chǎn)品氫氣純度相對較低,雜質(zhì)微量相對較高,不能滿足己二酸車間醇酮崗位更高的需求,裝置提取率相對較低,不經(jīng)濟(jì),不利于節(jié)能降耗。改進(jìn)后,產(chǎn)品氣氫氣純度≥99.9%,微量CO和CO2總含量≤10×10-6,裝置提取率≥85%,均獲得較大幅度提升;3. 2#變壓吸附程控閥經(jīng)過幾年的運行使用,由于吸附劑粉化和機(jī)械疲勞的影響,閥門開始出現(xiàn)打不開或者關(guān)不上的情況,尤其是當(dāng)閥門關(guān)不上的時候危害性最大。改進(jìn)后,一定程度上消除了程控閥故障給系統(tǒng)帶來的隱患,使系統(tǒng)可以處于一個安全狀態(tài),同時確保了程控閥故障時可以工藝交出,為搶修贏得了寶貴的時間。4.當(dāng)解析氣外送壓力超過0.05 MPa時,會引起安全閥超壓放空,放空氣排放大氣會造成空氣污染,排放的氣體若遇雷電等天氣又會發(fā)生燃燒。改進(jìn)后,解析氣進(jìn)入火炬系統(tǒng),避免了污染環(huán)境,消除了安全生產(chǎn)的不穩(wěn)定因素。
[Abstract]:The main research object of this paper is the first domestic pressure swing adsorption unit of 50 000 t / a ethylene glycol constructed by Shandong Hualu Hengsheng Chemical Co., Ltd. The unit adopts 15000 Nm3/h pressure swing adsorption process package designed by Sichuan Yalen Hi-tech Co., Ltd. It mainly provides hydrogen with purity of more than 99.5%, which can be used for hydrogenation of ethylene glycol workshop and employment of adipate alcohol ketone. This paper mainly discusses and solves the following four problems in the process of production of the plant, and the actual effect is good. 1. The entrainment of methanol in raw gas exceeds the standard, which results in the aggravation of pulverization of adsorbent. After the improvement, the harm of methanol in feedstock gas belt is eliminated, the service life of adsorbent is prolonged, the operation period of unit is increased, the adsorbent is intercepted and powdered, and the influence of adsorbent on the receiving position of analytical gas is reduced. The purity of hydrogen is relatively low and the trace impurity is relatively high, which can not meet the higher demand of alcohols and ketones in adipic acid workshop, and the extraction rate of the unit is relatively low, which is not economical and is not conducive to energy saving and consumption reduction. After improvement, the purity of hydrogen gas was 鈮，

本文編號：1880254