201114754 六、發明說明： 【發明所屬之技術領域】 [0001] 一種線上再生污染的四丁磾溶劑的卉生設備與方法，特 別是關於芳香烴萃取系統中保持四T碱溶劑的品質’進 而減少四丁颯溶劑的消耗量的設備與方法° 【先前技術】 [0002] 四丁礙（Sulfolane)，C4H8〇2S亦被稱為四氫化塞吩 (1-tetrahydrothiophene)和四 f 基碱 (tetramethylene sul f〇ne)。四丁戚廣用為萃取和反 應的溶劑。它是用來自含有非芳香熳’如烧經和環烷烴 的溶液中分取苯、甲苯及二甲苯等芳香煙產物。它也被 用來分離正丙醇和異丁醇。它也被用來提練天然氣或將 脂肪酸分離成飽和及不飽和的成份。 [0003] 四丁颯裝置通常是設在芳香烴製造系統中’將來自重組 汽油（ref ormate)或裂化汽油（Pyr〇 1 ysis gaso 1 ine) 中，分離出高純度的笨、甲苯及二曱苯等產品。在目前 的芳香烴生產系統裏，四丁颯裝置一般都被安裝在媒組 汽油分德塔後面。 [0004] 在四丁砜萃取塔中，芳香烴就被溶進四丁砜溶劑中成為 萃取層（在塔底），殘餘的非芳香煙成份則與四丁礙溶劑 繼續逆流接觸’以將所含芳香烴萃取乾淨，成萃餘油而 自塔頂取出。為了提高萃取效率，萃取板可加裝旋轉式 擋板成RDC(即旋轉式擋盤塔）。 [0005] 098136564 塔頂層四丁颯溶劑可先經凝聚器（coalescer)，然後經 清水洗滌塔來自萃餘油（Raffinate)中回收四丁碗溶劑 0982062658-0 表單編號A0101 第4頁/共25頁 201114754 [0006]201114754 VI. Description of the invention: [Technical field to which the invention pertains] [0001] An apparatus and method for regenerating contaminated tetrabutyl hydrazine solvent on-line, in particular, for maintaining the quality of a tetra-T alkali solvent in an aromatic hydrocarbon extraction system Apparatus and method for consumption of tetrabutyl hydrazine solvent [Prior Art] [0002] Sulfolane, C4H8〇2S is also called tetrahydroethylenephene and tetramethylene sul F〇ne). Siding is widely used as a solvent for extraction and reaction. It is obtained by extracting aromatic smoke products such as benzene, toluene and xylene from a solution containing non-aromatic hydrazines such as calcined and naphthenic hydrocarbons. It is also used to separate n-propanol and isobutanol. It is also used to refine natural gas or to separate fatty acids into saturated and unsaturated components. [0003] The tetrabutyl guanidine device is usually disposed in an aromatic hydrocarbon manufacturing system and will be separated from high-purity stupid, toluene and diterpene from ref ormate or pyroline gasoline (Pyr〇1 ysis gaso 1 ine). Benzene and other products. In current aromatic hydrocarbon production systems, tetrabutyl sulfonium units are typically installed behind the media group gasoline depot. [0004] In the tetrabutyl sulfone extraction column, the aromatic hydrocarbon is dissolved into the tetrabutyl sulfone solvent to form an extraction layer (at the bottom of the column), and the residual non-aromatic smoke component continues to be in countercurrent contact with the tetrahydrocyanate solvent. The aromatic hydrocarbon-containing extract is cleaned, and the residual oil is extracted and taken out from the top of the tower. In order to improve the extraction efficiency, the extraction plate can be equipped with a rotary baffle to form an RDC (ie, a rotary turret). [0005] 098136564 The top layer of tetrabutyl hydrazine solvent can be first passed through a coalescer (coalescer), and then recovered from the raffinate through a clean water washing tower (Raffinate) to recover four cups of solvent 0982062658-0 Form No. A0101 Page 4 of 25 201114754 [0006]
[0007] G[0007] G
[0008] 〇 098136564 。最後，可將乾淨的萃餘油當成汽油成份，推配成汽油 成品。 在四丁碾系統裏，常有嚴重的腐蝕問題。常被污染的四 丁硬溶劑腐蝕的地方包括富溶液（rich solvent)的管線 、萃取油汽提塔、再沸器、傳送管線、溶劑回收塔以及 溶劑回收塔的再沸器。當腐蝕增加，設備可能被貫穿， 造成小孔，導致安全和危險的問題。 腐蝕的根本原因是酸性污染物質儲積在循環中的溶舞j。 被污染的四丁颯溶劑則由無色變成黑色，黏度增加成膠 狀物，酸性增加（PH值降低至4或更低），而且腐蝕性也增 加。造成四丁破溶劑萃取裝置腐蝕的四大原罔為：1.設 •人 備中的氧氣（進入設備或與進料跟進來），2.循環溶劑中 的氧氣，3.設備中儲積的溶劑老化物，4.再沸器的高溫 度。 溶劑的老化物和腐钱物是黏膠，有臭味而處理起來又 困難又難以接受。經年的操作後’此等老化物和腐餘物 便會蓄積起來，導致系統堵塞，活娃碳的吸附床壓差增 加，更重要的是熱交換器熱傳係數的降低，而導致操作 效率降低。不但如此，這些蓄積在系統中的污染物常是 腐蝕性物質，是一種催化劑，會加速溶劑的老化，形成 更多的老化物。控制腐蝕最簡單的方法是加入乙醇銨 (monoethan〇lamine)來中和其酸性，但卻導致溶劑更 多的污染。從操作經驗，萃取系統必需在操作一段時間 就要徹底的清除才能操作順利。在某一商業化萃取設備 清除時’竟取出了 10〜15 大⑽〜15公嘲）的污物。 表單編號A0101 第5頁/共25頁 0982062658-0 201114754 徹底清除四丁颯溶劑萃取系統的確是件困難的工作。 [0009] 保持四丁颯溶劑萃取循環系統乾淨，有下列方法： [0010] 1. 在貧（lean)四丁颯溶劑輸送管線上裝設過濾床或 濾心（cartridge)以濾去老化物及腐餘物。問題是 在大量的老化物和腐钱物衝擊下，過滤床或遽心很 快就被塞滿。大多數的商業萃取工場都裝有此等過 濾，但因操作困難，操作週期又短，所以常被略過 (bypass)而形同虛設。 2. 裝設雙座活性碳吸附塔來吸附老化物和腐蝕物。不 過操作經驗顯示這種吸附塔並不實用，因為吸附塔 很快就被堵塞而難以清理，也難以更換新吸附劑。 3. 再生回收污染的四丁砜溶劑：自循環系統中，提出 一小股含有老化物及腐蝕物的貧四丁颯溶劑，並打 入真空蒸餾塔，塔頂物是乾淨的四丁碱溶劑，並將 其迴流打入循環系統重用。塔底物是老化物和腐蝕 物也是廢棄物，經適當處理後丟棄。此種四丁颯溶 劑的清淨方法效率較差，因為僅是一小股的污染四 丁碾溶劑經過再生處理。不但如此，所產生的廢棄 物的量也相當可觀，而且非常難以處理和丟棄。 4. 使用陽離子和陰離子型離子交換樹脂去吸附，除去 包括磺酸、酯肪酸和鹽酸的酸性物質。Lai和Bhat 的美國專利5, 053, 1 37利用串聯的兩個塔來清淨和 再生含有污染物的四丁砜溶劑。其中第一個塔裝有 陽離子型樹脂，而第二個塔則有陰離子型樹脂。劉 和李指出老化物及腐蝕物所含的酸性物質可以有效 098136564 表單編號A0101 第6頁/共25頁 0982062658-0 201114754 的被陽離子型的離子交換樹脂吸除而得到清淨四丁 碱溶劑的效果（Liu Lingchi 和Li D〇ng-sheng， 石化設計，2002，19(2) 3卜33)，含載有酸的陽 離子型離子交換樹脂則用氫氧化鈉水溶液來再生。 在此方法中，只有一小股的污染四丁礙溶劑經過離 子交換處理，所以對於系統中四丁礙溶劑品質的提 高是相當有限的。此方法髒亂，並且產生大量的廢 : 棄物。 _ Q [0011] 為了控制腐蝕率，溶劑中所含酸性物質可以用乙醇銨 (Monoethanolamine)等銨類來中和。但是老化物和腐 蝕物仍然留在系統中循環，積垢於熱交換器从降低熱傳 係數，並且堵塞系統而增加系統的壓差。另外，儲積的 老化物和腐蝕物亦會經自動催化作用來加速四丁碾溶劑 的老化和系統的腐蝕率，因而構成惡性循環。因此，系 統必需經常排除可觀的污染溶劑」以保持四丁砜溶劑品 質在可以接受的水準。 〇 [0012] 先前的技術在控制四丁砜溶劑的腐蝕性和再生循環系統 上，有包括下列諸多不利之處： [0013] 1. 系統的腐餘率高’因為儲積的老化物和腐餘物催化 加速四丁颯溶劑的老化，又加速腐姓率和腐钱物的 儲積而導致惡性循環。 2. 老化物和腐餘物之儲積率因其自動催化作用而加乘 加速。 3. 清除或替換過濾器或吸附劑之操作既繁瑣’危險又 昂貴。 表單編號A0101 098136564 第7頁/共25頁 0982062658-0 201114754 4. 當四丁颯溶劑的品質未能保持在必要水準時，系統 的操作量及效率均降低，蒙致經濟損失。 5. 由於只處理小股的污染四丁颯溶劑，所以四丁颯溶 劑的再生效力不足。 6. 系統操作和維護費用高。 [0014] 顯然的，業界正渴望能有一有效、安全和經濟的方法來 再生污染的四丁砜溶劑以得到有效、安全、高操作量和 低操作及維護費用的芳香烴萃取系統。 【發明内容】 [0015] 本發明提供一線上再生污染的四丁颯溶劑的再生設備與 方法來再生芳香烴萃取系統中的四丁碾溶劑，以保持其 品質約在新鮮溶劑的水準，特別是本發明使用一新穎的 再生設備來去除全循環系統中的污染四丁颯溶劑所含老 化物和腐蝕物，以保持芳香烴萃取系統的高操作量和高 效率。 [0016] 依照本發明在循環系統中裝有一新穎的溶劑再生設備， 以除去系統中污染四丁颯溶劑所含老化物和腐蝕物。再 生設備最好設置在貧四丁颯溶劑管路，而且在冷卻器後 和進入萃取塔之前。兩個再生設備採用並聯的裝置，以 便隨時切換來去除所積老化物和腐蝕物以清淨其中任一 再生設備。具體說來，再生設備包含一高壓容器，有一 可移動蓋，並在容器内裝有一圓環架，其上有多支垂直 的不銹鋼管。在每一不銹鋼管内裝有一磁棒。在不銹鋼 管的圓環架外則裝有濾網筒。當污染的四丁砜溶劑流經 再生設備時，再生設備就會吸附四丁颯溶劑中所含的污 098136564 表單編號A0101 第8頁/共25頁 0982062658-0 201114754 [0017] [0018] Ο 再生設備來繼續操作。將吸附很多老化物和腐蝕物的再 ο [0019] [0020] 染物。當污物，滿時，即解開再生設備，來除去儲積的 污物。 當污染的四丁硬溶劑進入再生設備後，其所含老化物及 腐钱物就被含有磁棒的垂直不錄鋼管所吸附而自四丁颯 溶劑分離。 内部的濾網筒的裝設，更加強了磁棒去除老化物和腐蝕 物的能力。當要保持四丁颯溶劑品質在最高水準時，這 個加強去除老化物和腐蝕物的能力’顯得更加重要。經 過内部濾網筒，再生了的乾淨四丁碾溶劑就離開再生設 備，回流到萃取塔繼續進行萃取操作。開始操作一段時 間，例如兩週後，再生設備就吸附很多的老化物和腐蝕 物’再生設備的壓差就會因焉增加。當此塵差增加到一 定的程度時，例如2kg/cm2，循環溶劑魏會被切入備用的 生設備打開，並取出圓環架及其上的不銹鋼管和所含磁 棒。將其放置於另一容器f並將磁棒從不銹鋼管中取出 。磁棒一取出，附著在不銹鋼丨管:占学老化物和腐蝕物便 會因磁力消失而自不銹鋼管掉落乾淨，廢棄物則收集於 容器中。本再生設備之特徵為去除污物效率高，構造簡 單和操作及維護費用低。 炫將本發明之目的和優點略述如下： L低腐蝕率：因可有效除去老化物和腐蝕物。 2·老化物和腐蝕物之儲積低：因可有效除去老化物的 自動催化作用。 098136564 表單編號A0101 第9頁/共25頁 0982062658-0 201114754 3. 無繁瑣、危險及昂貴的系統清洗工作或過濾器及吸 附劑之替換。 4. 穩定的操作量和效率：因可保持系統中四丁颯溶劑 在幾乎是新鮮四丁礙溶劑的水準。 5. 高效率的再生污染四丁颯溶劑：因可再生系統所有 污染溶劑。 6. 低操作及維護費用。 [0021] 更加進一步的目的和優點將因接下來的描述和圖解而變 得更明顯。 【實施方式】 [0022] 本發明的再生設備和設計是根據對於老化物和腐蝕物性 質的意外發現。一般認為儲積在污染四丁颯溶劑中的老 化物和腐#物是： [0023] 1. 由於四丁颯溶劑氧化形成的酸，例如：磺酸和硫酸 〇 2. 來自氣氣的酸，例如鹽酸。 3. 來自四丁颯溶劑之氧化凝縮及其老化物的聚合物。 [0024] 這些產物呈酸性，其pH值低、黑色、膠黏而傾向於聚積 在管線、過滤器和熱交換器，以致操作量和效率降低。 這些產物很難從循環系統和製程設備中去除。從溶劑系 統去除這些產物和清洗系統設備正是世界石油及石化產 業的研究課題。 [0025] 在研究中，我們意外發現這些黏膠物質含有很細、黑色 的細粒固體。更進一步的物性研究顯示這些產物是順磁 098136564 表單編號A0101 第10頁/共25頁 0982062658-0 201114754 性而易為磁鐵所吸附。因此這些四丁礙溶劑的污染物玎 利用磁鐵來去除，使黑色的四丁碾溶劑變白、變乾淨， Ο [0026] ❹ 而且恢復其品質和性質。我們相信在操作時，設備被酸 性物質腐蚀而釋放出鐵離子。這些鐵離子進一步與硫酸 、氧氣和水反應生成順磁性的硫化鐵、氧化鐵和氫氧化 鐵粒子。就是這些粒子使四丁職溶劑變成黑色❹這些微 細的順磁性微粒進一步被有機的老化物所包沒而使整體 老化物和腐蝕物變成順磁性。因此使用磁棒就可以將老 化物和腐姓物神奇的從污染的四丁*風溶劑中去除 而為了達到將污染溶劑再生的目的。本案提出一種線上 再生污染的四丁砜溶劑的再生設備與方法，其中該方法 包括以下步驟：1.提供一再生設備，其中該再生設備具 有一高廢容器、一覆蓋該高壓容器之開口的可移動蓋、 複數容置於高壓容器内的不銹鋼管以及裝設於該不銹鋼 管内的磁棒；2.設置該再生設備，雇貧四丁砜溶劑的循環 官路中；3.將該貧四丁礙溶劑導入該再生設備；4回收 該再生設備所流出之溶劑，並送入裝設於貧四丁颯溶劑 循環管路中的一萃取塔。依照該方法其實施方式為：將 系統中含有污染物的貧四丁颯溶劑整股通入本發明的再 生设備，來連續性的去除所含的老化物和腐蝕物以再生 、保持系統中四丁砜溶劑的品質，達到與新鮮四丁硐溶 剤差不多的水準。上述之再生設備為實施本發明的技術 重點，本發明再生設備的安裝和操作也都非常重要。 該再生設備結構請一併參間圖1、圖2與圖3。該再生設僑 30是包含—可移動蓋36且彳耐芳香烴萃取系統壓力的一 098136564 表單編號Α0101 第11頁/共25頁 0卵2〇62658-〇 [0027] 201114754 高壓容器3 7。該再生設備3 0具有一油料入口 31和一油料 出口 32。在高壓容器37内容置有至少一圓環架33、34、 35、複數不銹鋼管40、複數磁棒60以及一濾網筒80所構 成的結構。其中該可移動蓋36覆蓋封閉該高壓容器37之 一開口，而該圓環架33、34、35上固定有多支不銹鋼管 40，在每一不銹鋼管40内裝有一磁棒60，而該高壓容器 37中的圓環架33、34、35被裝設於該濾網筒80中央。其 中該濾網筒80的孔目可自1到200個之間，較佳的是10到 100之間。在圖中所示的較佳實施例中，該圓環架33、34 、35上.附有12支垂直.的不錄鋼管40。至於不銹鋼管40的 數目可有2至30支，或者更多。在每支不銹鋼管40裏各裝 有一支磁棒60。貧四丁砜溶劑22是由油料入口 31引導入 再生設備30，並往下流經含磁棒60的不銹鋼管40，最後 經過底部的油料出口 32流出。再生設備30中的濾網筒80 是用來防止貧四丁颯溶劑22流通於再生設備30時有短路 (short circuiting)現象，如果沒有渡網筒80，貧四 丁砜溶劑22主要的流態將以最短最快的距離流經再生設 備30，無法讓整隻磁棒60所有的表面都能達到吸附的效 果，（即有的地方流速很快，有的地方很慢，若有濾網， 則由濾網孔洞流出速度將會較平均）。 [0028] 請再參閱圖4，圖4為應用上述再生設備30的芳香烴萃取 系統，並且示意萃取的流程。一含芳香烴輕油11被引入 一萃取塔10，貧四丁砜溶劑22則自頂部被引入該萃取塔 10，自塔頂取出一萃餘油13。一萃取油12則由塔底取出 ，並打入分餾塔20來餾出芳香烴產品油21，而該分餾塔 098136564 表單編號A0101 第12頁/共25頁 0982062658-0 201114754 20餘下的溶劑為貧四丁砜溶劑22。回收的貧四丁砜溶劑 22則打回萃取塔10再使用。在打回萃取塔10之前，貧四 丁颯溶劑22則經一熱交換器23冷卻後，再經該再生設備 30處理。其中該熱交換器23可為液冷式或氣冷式。 [0029] Ο [0030] 對於污染的貧四丁颯溶劑22的再生，促使再生設備30有 效和高效率是很重要的。為了達到這個目的，我們發現 最佳的方式是處理整股的污染貧四丁砜溶劑22，而不是 只處理一小股的分流。因此，該再生設備30要裝設在循 環系統上，以處理整股循環中的貧四丁颯溶劑22。 ❹ 為了使再生操作真正為連續性，在該系統執行再生程序 時可同時將兩再生設備30a和30b並聯裝在循環管線上（ 如圖4所示），以便其一再生設備30a操作時，另一備用 再生設備30b可用來清洗備用。當再生設備30a或30b的 操作時間增長，老化物和腐蝕物就會繼續被吸附並儲積 在含有磁棒60的不銹鋼管40上。再生設備00的壓差會因 而繼續增加。當此壓差增加到某一程度時，就要拆開再 生設備30來清理。為了提升整個系統的效率，當該再生 設備30的操作壓降增至1到5公斤/平方厘米時即執行一清 潔步驟，依四丁砜溶劑系統的清潔程度，再生設備30清 洗的週期大約2至30天或更長。 [0031] 要清洗再生設備30a時，就要將貧四丁砜溶劑22轉入再生 設備30b，以便連續再生貧四丁砜溶劑22的工作。清理再 生設備30a時，先將圖1所示的可移動蓋36打開，然後將 圖2所示的圓環架33、34、35連同不銹鋼管40及所含磁 棒60從再生設備30a移除。此時不銹鋼管40表面和不銹鋼 098136564 表單編號A0101 第13頁/共25頁 0982062658-0 201114754 管40間的空_«了老化物和録物。當磁棒6〇被移 除時，附著在不錄鋼管40表面的老化物及腐姓物就因重 力而掉落。清洗乾淨後’將轉财義管4〇後， 將圓環架33、34、35裝進再生設備3〇减可備以再次使 用。 _ S生設備30可以❹在萃取系賴㈣溫度。*過太高 的温度將使磁棒60失去磁性，太低溫度時老化物及腐蝕 物的黏度增加而漸失其對不_管4()的黏著性和再生設 備30的效能。因此，可行的操作溫度範圍為1〇至2〇〇。(：， 而以20矣150°C為最適合。考慮此最適溫度範圍後，我們 認為再生設備30最好安裝在熱交換器23和萃本塔10間的 貧四丁颯溶劑22的循環管線上。 [0033] 為使操作有效，流經再生設備3〇的空間流速（以再生設備 30的體積為基礎）範圍為100到1〇, 000v/v/Hr，且以50 到5, 0〇〇v/v/Hr為最適宜〜 [0034] 再生設備30的壓差是其清潔度和所餘操作容量的指標。 當此歷羞增至2kg/cm或更高時’再生設備go就要依上述 步驟清理’以恢復其細作容量。 [0035] 以上為搭配圖式所作的說明，而實際使用的測量數據如 下説明。 】量之實例： [0037]為測試驗證本發明的效力，建造了二具再生設備。其尺 寸為直控133公分，高度65公分和容積55公升。在鋼架上 不銹鋼管各置入磁棒一支，共12支。濾網筒的孔目為 表單編號A0101 第14頁/共25頁 0982062658-0 098136564 201114754 [0038] Ο ❹ [0039] [0040] 098136564 8〇mesh，此二再生設備被安裝在冷卻器和萃取塔 V U間 的貧四丁颯溶劑的循環管線上。 此二再生設備是在煉油廠的芳香烴萃取系統測試的，本 萃取系統已經操作3年，所以貧四丁颯溶劑已經是敢鱗 黑色、腐蝕性高而且含有很多膠黏的老化物和腐餘物。 該萃取塔的尺寸為内徑3, 600mm及高度42, 〇〇〇mm。進料 媒麵·汽油之流速為42, 531公斤/小時（即53. 1立方公尺/ 小時）。污染的貧四丁艰溶劑循環系統流速為138, 6〇2八 斤/小時（107立方公尺/小時）。所以溶劑對進料之體積〜比 約為2。將再生設備操作到壓降升到2公斤/平方厘米就青 洗。當本測試開始時，因為原來的四丁砜溶劑太髒，所 以再生設備只能操作一週就因壓降達到2公斤/平方厘米 而停止以便清理。純巾的四了祕劑卻隨著測織時^ 的増長而越來越乾淨，所以再生設備的操作週期自 =長到二星期’三星期，四星期甚至三個月。當剛試 病再生設備被打開清理時’不錄鋼管的表面和其 的空間均載滿又黑又_的老化物和腐㈣。當磁料 不錢鋼管移除時，此等老化物和腐㈣即掉落乾淨。 利用測試前和測試三個月後的四丁縣劑特性分析即可 顯示本發明再生設備的優點。此等特性分析的方法為： h四丁鄕劑蒸_29{^的殘留量。因為四丁現溶翻 的'弗點為285°C，所以蒸餘到290°C的殘量正代表其 所含老化物和職物的量，即此殘留量越少，即表 示四丁碾溶劑越乾淨。 貧四丁縣劑的顏色：因為老化物及雜 號删1 ^ 15 I/# 25 , 牙的 0982〇62658-〇 2. 表單煸號A0101 201114754 顏色很深，所以四丁砜溶劑的顏色越淺’即表示其 越乾淨。 3 銨（MEA)的添加速度：因為酸性是由於四丁碾溶劑 老化所產生，所以用以中和酸性的錢的添加量越少 ，就表示四丁砜溶劑越乾淨° 4.四丁颯溶劑的補充量：由於四丁踊•溶劑在萃取塔中 逐漸老化，所以必需將循瓖系統中的四丁碾溶劑部 份排棄，並補充新鮮的四丁戚溶劑’方能確保四丁 颯溶劑的品質。因此，四丁碟溶劑補充量越少，即 表示系統中四丁磯溶劑越乾淨。 [0041] [0042] [0043] 兹將測試結果列如表一： 表一 厂' ---- 樣品 再生前 二個月的再生 蒸餾殘餘量，％ 1.0 ^— 度 3 0. ^ --—------- MEA添加量，公斤/ .!〇〇 S'l 年 四丁戚溶劑補充量， 1000 ^- 公斤/年 y 098136564 的樣品中各為1. 〇和〇. 4%，我們注意到在再生前的萃取系 統#常辦’而滿載多量老化物和腐钱物，所以所取的樣 品不見付此含有所有的老化物和腐餘物。因此再生前樣 品的蒸館殘餘量可能遠高於表一所示的1%，經過三個月 再生的樣品卻驚奇的乾淨，而其蒸餾殘餘量僅有0.4%。 表單編號A0101 第16頁/共25頁 0982062658-0 201114754 [0044]上述結果顯示本發明的再生設備對再生污染的四丁碾& 劑是#常有效的。 & [0045] 〇 [0046] [0047] ❹ [0048] [0049] [0050] [0051] [0052] [0053] 098136564 雖然本發明以較佳實_揭露如上，然其並非用以限定 本發明’前述的清潔步_然㈣並聯之再生設備作交 互替換使用’但在使用單—再生設備的系統中亦可將該 再生設備抽出執行清潔步驟，但為顧及系統運作連續性 ，增設備用的再生設備為較佳的選擇。任何熟習此技藝 者，在不脫離本發明之精神和範圍内，而所作之些許更 動與潤飾，皆應涵蓋於本發财，概本發明之保護範 圍當視後附之申請專利範圍所界定者為準^ 综上所述，本發明較習知之創作增進上述功*效，應已充 分符合新穎性及進步性之法定創新專利要件，袭依法提 出申請’懇請貴局核准本件發明專财請案，以勵創作 ’至感德便。 【圖式簡單說明】 圖1為本案中再生設備較佳實施態樣的剖面示意圖。 圖2為該再生設¥1要元件之分解圖。 圖3為該再生設備A-Α剖面圖。 圖4為包含該再生設備的萃取系統方塊示意圖。 【主要元件符號說明】 10...... 11 ·.···· 12...... 表單編號A0101 萃取塔 含芳香烴輕油 萃取油 第 17 頁/共 25 頁 0982062658-0 201114754 •萃餘油 [0054] 13 [0055] 20......分餾塔 [0056] 21......芳香烴產品油 [0057] 22......貧四丁砜溶劑 [0058] 23......熱交換器 [0059] 30......再生設備 [0060] 31......油料入口 [0061] 32......油料出口 [0062] 33、34、35......圓環架 [0063] 36......可移動蓋 [0064] 37......高壓容器 [0065] 40......不銹鋼管 [0066] 6 0......磁棒 [0067] 80......濾網筒 [0068] 30a、30b......再生設備 098136564 表單編號 A0101 第 18 頁/共 25 頁 0982062658-0[0008] 098 098136564. Finally, the clean raffinate oil can be used as a gasoline component to be converted into a finished gasoline product. In the four-mill system, there are often serious corrosion problems. Commonly contaminated tetrabutyl hard solvents are corroded by rich solvent lines, extraction oil strippers, reboilers, transfer lines, solvent recovery columns, and reboilers for solvent recovery columns. As corrosion increases, equipment can penetrate through, creating small holes that cause safety and hazards. The root cause of corrosion is the accumulation of acidic pollutants in the circulation. The contaminated tetrabutyl hydrazine solvent changes from colorless to black, the viscosity increases to a gel, the acidity increases (the pH decreases to 4 or lower), and the corrosivity also increases. The four major causes of corrosion of the tetrabutyl solvosolvent extraction unit are: 1. oxygen in the equipment (into the equipment or follow-up with the feed), 2. oxygen in the circulating solvent, 3. solvent aging stored in the equipment 4. The high temperature of the reboiler. Solvent aged materials and rotted materials are viscose, which are odorous and difficult to handle. After the operation of the year, 'the aging materials and the residue will accumulate, causing the system to clog, the pressure difference of the adsorbent bed of the activated carbon increases, and more importantly, the heat transfer coefficient of the heat exchanger is reduced, resulting in operational efficiency. reduce. Not only that, these pollutants, which are accumulated in the system, are often corrosive substances and are a catalyst that accelerates the aging of the solvent and forms more aging materials. The easiest way to control corrosion is to add monoethan〇lamine to neutralize its acidity, but it causes more solvent contamination. From the operational experience, the extraction system must be thoroughly removed during operation for a period of time to operate smoothly. When a commercial extraction device was removed, the dirt was removed by 10 to 15 large (10) to 15 megagrams. Form No. A0101 Page 5 of 25 0982062658-0 201114754 Thorough removal of the tetrabutyl hydrazine solvent extraction system is indeed a difficult task. [0009] Keeping the tetrabutyl hydrazine solvent extraction cycle system clean, there are the following methods: [0010] 1. Install a filter bed or a cartridge on a lean tetrabutyl hydrazine solvent transfer line to filter out aged materials and Corrosion. The problem is that under the impact of a large amount of aging and decaying money, the filter bed or heart is filled up very quickly. Most commercial extraction plants are equipped with such filtration, but because of the difficulty of operation and the short operating cycle, they are often bypassed and rendered useless. 2. Install a two-seat activated carbon adsorption tower to adsorb aged materials and corrosives. However, operating experience has shown that such an adsorption tower is not practical because the adsorption tower is quickly clogged and difficult to clean, and it is difficult to replace the new adsorbent. 3. Recycling of contaminated tetrabutyl sulfone solvent: From the circulation system, a small amount of tetrabutyl hydrazine solvent containing aging and corrosive substances is proposed and driven into a vacuum distillation column. The overhead is a clean tetrabutylic solvent. And return it to the recycling system for reuse. The bottoms of the tower are aged and corrosive and waste, which are discarded after proper treatment. The cleaning method of such a tetrabutyl hydrazine solvent is inefficient because only a small amount of the contaminated tetrabutyl solvent is subjected to regeneration treatment. Not only that, but the amount of waste generated is also considerable and very difficult to handle and discard. 4. Use a cationic and anionic ion exchange resin to remove the acidic material including sulfonic acid, fatty acid and hydrochloric acid. U.S. Patent No. 5,053,137 to Lai and Bhat utilizes two columns in series to purify and regenerate tetrasulfone solvent containing contaminants. The first column contains a cationic resin and the second column has an anionic resin. Liu and Li pointed out that the acidic substances contained in the aged materials and corrosives can be effectively 098136564 Form No. A0101 Page 6 / 25 pages 0962062658-0 201114754 by the cationic ion exchange resin to obtain the effect of clean tetrabutyroic solvent. (Liu Lingchi and Li D〇ng-sheng, Petrochemical Design, 2002, 19(2) 3b 33), a cationic ion exchange resin containing an acid is regenerated with an aqueous solution of sodium hydroxide. In this method, only a small amount of the contaminated solvent hinders the solvent exchange, so the improvement of the solvent quality in the system is quite limited. This method is messy and produces a lot of waste: discarded. _ Q [0011] In order to control the corrosion rate, the acidic substance contained in the solvent can be neutralized with an ammonium such as ammonium glycol (Monoethanolamine). However, the aging materials and corrosion remain in the system, and the fouling in the heat exchanger reduces the heat transfer coefficient and blocks the system to increase the pressure difference of the system. In addition, the accumulated old compounds and corrosives are also autocatalyzed to accelerate the aging of the tetrabutyl solvent and the corrosion rate of the system, thus forming a vicious circle. Therefore, the system must often exclude significant contaminating solvents to maintain the tetrabutyl sulfone solvent quality at an acceptable level.先前[0012] The prior art has many disadvantages in controlling the corrosive and regenerative circulation system of tetrabutyl sulfone solvent: [0013] 1. The high corrosion rate of the system is due to the accumulation of aging materials and decay The catalysis accelerates the aging of the tetrabutyl hydrazine solvent, and accelerates the accumulation of the rot rate and the accumulation of rotted money, resulting in a vicious circle. 2. The accumulation rate of aging and decaying matter is accelerated by its autocatalysis. 3. The operation of removing or replacing filters or adsorbents is both cumbersome and dangerous. Form No. A0101 098136564 Page 7 of 25 0982062658-0 201114754 4. When the quality of the tetrabutyl hydrazine solvent is not maintained at the necessary level, the operation volume and efficiency of the system are reduced, resulting in economic loss. 5. Since only a small amount of contaminated tetrabutyl hydrazine solvent is treated, the regeneration efficiency of the tetrabutyl hydrazine solvent is insufficient. 6. System operation and maintenance costs are high. [0014] Clearly, the industry is eager to have an efficient, safe and economical way to regenerate contaminated tetrabutyl sulfone solvent for efficient, safe, high throughput and low operating and maintenance aromatic hydrocarbon extraction systems. SUMMARY OF THE INVENTION [0015] The present invention provides a regenerative apparatus and method for regenerating contaminated tetrabutyl hydrazine solvent on line to regenerate the tetrabutyl solvent in an aromatic hydrocarbon extraction system to maintain its quality at a level of fresh solvent, especially The present invention uses a novel regeneration apparatus to remove the aged and corrosive materials contained in the contaminated tetrabutyl sulfonate solvent in the full circulation system to maintain high throughput and high efficiency of the aromatic hydrocarbon extraction system. [0016] In accordance with the present invention, a novel solvent regeneration apparatus is installed in the circulation system to remove aged and corrosive materials contained in the contaminated tetrabutyl sulfonate solvent in the system. The regeneration equipment is preferably placed in a lean tetrathene solvent line and after the cooler and before entering the extraction column. The two regenerative devices use parallel devices to switch at any time to remove accumulated artifacts and corrosives to clean any of the regenerative devices. Specifically, the regenerating apparatus includes a high pressure vessel, a movable cover, and a circular frame in the container having a plurality of vertical stainless steel tubes. A magnetic bar is mounted in each of the stainless steel tubes. A filter cylinder is placed outside the circular frame of the stainless steel tube. When the contaminated tetrabutyl sulfone solvent flows through the regeneration equipment, the regeneration equipment adsorbs the dirt contained in the tetrabutyl sulfonate solvent. 098136564 Form No. A0101 Page 8 / Total 25 Page 0982062658-0 201114754 [0017] 00 Regeneration The device continues to operate. A lot of aging and corrosion will be adsorbed. [0020] [0020] dye. When the dirt is full, the regeneration equipment is unwound to remove the accumulated dirt. When the contaminated tetrabutyl hard solvent enters the regenerative equipment, the aged product and the decayed matter are separated from the tetrabutyl hydrazine solvent by the vertical unrecorded steel pipe containing the magnetic bar. The installation of the internal filter cartridge enhances the ability of the magnet to remove aging and corrosion. This ability to enhance the removal of aging and corrosives is even more important when it is desired to maintain the highest quality of the tetrabutyl hydrazine solvent. After the internal filter cartridge, the regenerated cleaned tetrabutylene solvent leaves the regeneration equipment and is returned to the extraction tower for extraction. After a period of operation, for example, after two weeks, the regenerative equipment adsorbs a lot of aged materials and corrosives. When the dust difference is increased to a certain extent, for example, 2 kg/cm2, the circulating solvent is cut into the spare equipment and the ring holder and the stainless steel tube and the magnetic rod thereon are taken out. Place it in another container f and remove the magnet from the stainless steel tube. Once the magnetic rod is removed, it is attached to the stainless steel manifold: the aged and corrosive materials will fall off the stainless steel tube due to the disappearance of the magnetic force, and the waste will be collected in the container. The regenerative equipment is characterized by high efficiency in removing dirt, simple construction, and low operating and maintenance costs. The purpose and advantages of the present invention are outlined below: L Low corrosion rate: effective in removing aged materials and corrosives. 2. Low accumulation of aged materials and corrosives: automatic catalysis due to effective removal of aged materials. 098136564 Form No. A0101 Page 9 of 25 0982062658-0 201114754 3. No cumbersome, dangerous and expensive system cleaning work or replacement of filters and adsorbents. 4. Stable operation and efficiency: because it can keep the tetrabutyl sulfonium solvent in the system at the level of almost fresh solvent. 5. Highly efficient regenerative contamination of tetrabutyl sulfonate solvent: all contaminated solvents due to renewable systems. 6. Low operating and maintenance costs. [0021] Still further objects and advantages will become more apparent from the following description and illustration. [Embodiment] The regenerative apparatus and design of the present invention are based on the unexpected discovery of aged materials and corrosive properties. It is generally considered that the aged matter and the humic substance accumulated in the contaminated tetrabutyl hydrazine solvent are: [0023] 1. An acid formed by oxidation of a tetrabutyl hydrazine solvent, for example, sulfonic acid and barium sulfate 2. An acid derived from a gas, for example hydrochloric acid. 3. A polymer derived from the oxidative condensation of tetrabutyl hydrazine solvent and its aging. [0024] These products are acidic, have a low pH, are black, are sticky and tend to accumulate in pipelines, filters and heat exchangers, resulting in reduced handling and efficiency. These products are difficult to remove from the circulation system and process equipment. The removal of these products and cleaning system equipment from solvent systems is a research topic in the world's petroleum and petrochemical industries. [0025] In the study, we accidentally found that these viscose materials contained very fine, black fine solids. Further physical studies show that these products are paramagnetic 098136564 Form No. A0101 Page 10 of 25 0982062658-0 201114754 Sexually easy to adsorb by magnets. Therefore, these four solvents are removed by the use of a magnet, which causes the black tetrabutyl solvent to become white, clean, and [0026] ❹ and restore its quality and properties. We believe that during operation, the device is corroded by acid substances to release iron ions. These iron ions are further reacted with sulfuric acid, oxygen and water to form paramagnetic iron sulfide, iron oxide and iron hydroxide particles. It is these particles that turn the tetrabutyl solvent into a black enamel. These fine paramagnetic particles are further entrapped by the organic aging material to make the whole aging and corrosive substances become paramagnetic. Therefore, the use of a magnetic bar can magically remove the old compound and the rot from the contaminated tetrabutyl solvent in order to achieve the purpose of regenerating the contaminated solvent. The present invention provides an apparatus and method for regenerating contaminated tetrabutyl sulfone solvent on-line, wherein the method comprises the following steps: 1. providing a regeneration device, wherein the regeneration device has a high waste container, and an opening covering the high pressure container a moving cover, a plurality of stainless steel tubes housed in the high-pressure container, and a magnetic rod installed in the stainless steel tube; 2. the recycling device is disposed, and the circulation of the tetrabutyl sulfone solvent is employed; The solvent is introduced into the regeneration device; 4 the solvent flowing out of the regeneration device is recovered and sent to an extraction column installed in the solvent circuit of the tetrabutyl sulfoxide solvent. According to the method, the embodiment is: the entire tetrabutyl sulfonate solvent containing contaminants in the system is integrated into the regeneration device of the invention to continuously remove the aged materials and corrosive substances to be regenerated and maintained in the system. The quality of the tetrabutyl sulfone solvent is about the same level as the fresh tetrabutyl hydrazine solution. The above-described reproducing apparatus is a technical point of carrying out the present invention, and the installation and operation of the reproducing apparatus of the present invention are also very important. Please refer to Figure 1, Figure 2 and Figure 3 for the structure of the regenerative equipment. The regenerative home 30 is a 098136564 containing the removable cover 36 and the pressure of the aromatic hydrocarbon extraction system. Form No. 1010101 Page 11 of 25 0 Egg 2〇62658-〇 [0027] 201114754 High pressure vessel 3 7 . The regeneration device 30 has an oil inlet 31 and an oil outlet 32. The high pressure vessel 37 is provided with a structure in which at least one ring frame 33, 34, 35, a plurality of stainless steel pipes 40, a plurality of magnetic bars 60, and a screen cylinder 80 are disposed. The movable cover 36 covers an opening of the high pressure container 37, and the plurality of stainless steel tubes 40 are fixed on the circular frame 33, 34, 35, and a magnetic bar 60 is mounted in each stainless steel tube 40. The ring frames 33, 34, 35 in the high pressure container 37 are installed in the center of the screen cylinder 80. The mesh of the filter cylinder 80 may be between 1 and 200, preferably between 10 and 100. In the preferred embodiment shown in the figures, the circular frames 33, 34, 35 are attached with 12 vertical unrecorded steel tubes 40. As for the number of stainless steel tubes 40, there may be 2 to 30, or more. A magnetic bar 60 is mounted in each of the stainless steel tubes 40. The tetrabutylsulfone solvent 22 is introduced into the regeneration unit 30 from the oil inlet 31 and flows downward through the stainless steel tube 40 containing the magnetic rod 60 and finally out through the bottom oil outlet 32. The filter cylinder 80 in the regeneration device 30 is used to prevent short circuiting when the tetrabutyl sulfonium solvent 22 is circulated to the regeneration device 30. If there is no mesh cylinder 80, the main flow state of the tetrabutyl sulfoxide solvent 22 is poor. It will flow through the regeneration equipment 30 at the shortest and fastest distance, so that all the surfaces of the whole magnetic rod 60 can not achieve the adsorption effect (that is, some places have a fast flow rate, some places are very slow, if there is a filter, Then the flow rate from the filter hole will be more average). [0028] Please refer to FIG. 4 again. FIG. 4 is an aromatic hydrocarbon extraction system to which the above-described regeneration device 30 is applied, and illustrates the flow of extraction. An aromatic hydrocarbon light oil 11 is introduced into an extraction column 10, and a tetrabutylsulfone solvent 22 is introduced into the extraction column 10 from the top, and a raffinate oil 13 is taken from the top of the column. An extraction oil 12 is taken out from the bottom of the column and sent to the fractionation column 20 to distill off the aromatic hydrocarbon product oil 21, and the fractionation tower 098136564 Form No. A0101 Page 12 / Total 25 pages 0962062658-0 201114754 20 The remaining solvent is poor Tetrabutane solvent 22 . The recovered tetrabutylsulfone solvent 22 is returned to the extraction column 10 for reuse. Prior to the recovery of the extraction column 10, the lean tetrathene solvent 22 is cooled by a heat exchanger 23 and then treated by the regeneration unit 30. The heat exchanger 23 can be liquid cooled or air cooled. [0030] It is important for the regeneration of the contaminated tetrabutyl sulfonium solvent 22 to promote efficient and efficient regeneration equipment 30. To achieve this, we found that the best way to handle the entire strand of contaminated tetrabutyl sulfone solvent 22 is to treat only a small split. Therefore, the regeneration apparatus 30 is to be installed on a circulation system to treat the tetrathene-depleted solvent 22 in the entire cycle. ❹ In order to make the regeneration operation truly continuous, when the system performs the regeneration process, the two regeneration devices 30a and 30b can be simultaneously installed in parallel on the circulation line (as shown in FIG. 4), so that when one regeneration device 30a is operated, another A spare regeneration device 30b can be used to clean the spare. When the operation time of the regenerating apparatus 30a or 30b is increased, the aged matter and the corrosive material are continuously adsorbed and accumulated on the stainless steel pipe 40 containing the magnetic bar 60. The pressure difference of the regeneration device 00 will continue to increase. When this pressure difference is increased to some extent, the regeneration device 30 is disassembled for cleaning. In order to increase the efficiency of the entire system, a cleaning step is performed when the operating pressure drop of the regeneration device 30 is increased to 1 to 5 kg/cm 2 , and the cleaning cycle of the regeneration device 30 is about 2 according to the degree of cleaning of the tetrasulfone solvent system. Up to 30 days or longer. [0031] When the regeneration apparatus 30a is to be cleaned, the tetrabutylsulfone solvent 22 is transferred to the regeneration apparatus 30b to continuously regenerate the operation of the tetrabutylsulfone solvent 22. When the regeneration device 30a is cleaned, the movable cover 36 shown in Fig. 1 is first opened, and then the ring frames 33, 34, 35 shown in Fig. 2 are removed from the regeneration device 30a together with the stainless steel tube 40 and the contained magnetic bar 60. . At this time stainless steel tube 40 surface and stainless steel 098136564 Form No. A0101 Page 13 of 25 0982062658-0 201114754 Tube 40 empty _ «Aging and recording. When the magnetic bar 6〇 is removed, the aged material and the rot material attached to the surface of the unrecorded steel pipe 40 are dropped due to gravity. After cleaning, the forks 33, 34, and 35 are loaded into the regenerative equipment 3 and can be reused. _ S equipment 30 can be placed at the temperature of the extraction system. * Too high a temperature will cause the magnetic rod 60 to lose its magnetic properties. At too low a temperature, the viscosity of the aged material and the corrosive material increases, and the adhesion to the tube 4 and the regenerative device 30 is lost. Therefore, a feasible operating temperature range is from 1 〇 to 2 〇〇. (:, and 20 矣 150 ° C is the most suitable. After considering this optimum temperature range, we believe that the regeneration equipment 30 is preferably installed in the circulation tube of the tetrabutyl sulfonium solvent 22 between the heat exchanger 23 and the extraction tower 10. [0033] For efficient operation, the spatial flow rate (based on the volume of the regeneration device 30) flowing through the regeneration device 3〇 ranges from 100 to 1 000, 000 v/v/Hr, and is 50 to 5, 0 〇. 〇v/v/Hr is the most suitable ~ [0034] The pressure difference of the regenerative device 30 is an indicator of its cleanliness and remaining operating capacity. When this shame is increased to 2kg/cm or higher, the regenerative equipment will be Follow the above steps to clean up 'to restore its fine capacity. [0035] The above is a description of the accompanying drawings, and the actual measured data is as follows. 】 Example of quantity: [0037] To test the effectiveness of the invention, the construction was Two kinds of regenerative equipment. The size is 133 cm, the height is 65 cm and the volume is 55 liters. The stainless steel tubes are placed on the steel frame with a total of 12 magnets. The hole of the filter cylinder is the form number A0101. 14 pages/total 25 pages 0982062658-0 098136564 201114754 [0038] Ο ❹ [0039] [0040] 09813 6564 8〇mesh, the second regeneration equipment is installed in the cyclohexane-depleted solvent circulation line between the cooler and the extraction tower VU. The second regeneration equipment is tested in the aromatics extraction system of the refinery. After 3 years of operation, the solvent of the tetrabutyl sulphate is already black, highly corrosive and contains a lot of sticky aging and rot. The size of the extraction tower is 3, 600mm and 42 in inner diameter. Mm. Feed medium · Gasoline flow rate is 42, 531 kg / h (ie 53.1 m ^ 3 / h). The flow rate of the polluted poor Ding Ding solvent circulation system is 138, 6 〇 2 8 kg / h ( 107 m ^ 3 / h). So the solvent to feed volume ~ ratio is about 2. The regenerative equipment is operated until the pressure drop rises to 2 kg / cm 2 on the green wash. When the test begins, because the original four Ding The sulfone solvent is too dirty, so the regenerative equipment can only be cleaned for a week due to a pressure drop of 2 kg/cm 2 for cleaning. The four secret agents of the pure towel are getting cleaner with the length of the weaving. The operating cycle of the regenerative equipment is from = long to two weeks' Weeks, four weeks or even three months. When the test equipment is opened and cleaned up, the surface of the steel pipe and its space are filled with black and aging materials and rot (four). When the magnetic material is not expensive, the steel pipe is moved. In addition, these aging materials and rot (4) are dropped clean. The advantages of the regenerative equipment of the present invention can be demonstrated by using the characteristics analysis of the Siding County agent before and after the test for three months. The methods for analyzing the characteristics are: h The residual amount of steamed _29{^ of the tetrabutyl bismuth agent. Because the 'Four point of the four diced turnover is 285 °C, the residual amount of steaming to 290 °C represents the amount of aging and the amount of the product contained in it. The smaller the residual amount, the cleaner the tetrabutyl solvent. The color of the poor Siding County agent: because the aging and impurities are deleted 1 ^ 15 I / # 25, the teeth of 0982 〇 62658-〇 2. Form nickname A0101 201114754 The color is very deep, so the lighter the color of the tetrabutyl sulfone solvent 'It means that the cleaner it is. 3 Ammonium (MEA) addition rate: Because the acidity is caused by the aging of the tetrabutyl solvent, the less the amount of money used to neutralize the acid, the cleaner the tetrasulfone solvent. 4. Tetrabutyl sulfonate solvent Replenishment amount: Since the tetrabutyl hydrazine solvent gradually ages in the extraction column, it is necessary to discard the tetrabutyl solvent in the circulatory system and replenish the fresh tetrabutyl hydrazine solvent to ensure the tetrabutyl hydrazine solvent. Quality. Therefore, the less solvent replenishment of the tetrabutyl dish, the cleaner the tetrabutylene solvent in the system. [0043] [0043] The test results are listed in Table 1: Table 1 factory' ---- Regenerated distillation residuals two months before sample regeneration, % 1.0 ^ - degrees 3 0. ^ --- ------- MEA addition amount, kg / .! 〇〇S'l annual tetrabutyl hydrazine solvent replenishment, 1000 ^- kg / year y 098136564 each sample is 1. 〇 and 〇. 4%, We noticed that the extraction system before regenerative was “usually done” and loaded with a large amount of aging materials and rotted money, so the samples taken did not contain all the aging materials and residues. Therefore, the residual volume of the steam before the regeneration may be much higher than the 1% shown in Table 1. The sample regenerated after three months is surprisingly clean, and the distillation residue is only 0.4%. Form No. A0101 Page 16 of 25 0982062658-0 201114754 [0044] The above results show that the regenerative apparatus of the present invention is effective for regenerating contaminated tetrabutyl granules & [0045] 00 [0047] [0049] [0050] [0053] [0053] [0053] Although the present invention is better disclosed above, it is not intended to limit the present invention. Invention 'The aforementioned cleaning step _ (4) Parallel regenerative equipment for interactive replacement use 'but in the system using single-regeneration equipment, the regenerative equipment can also be extracted to perform the cleaning step, but in order to take into account the continuity of the system operation, increase the equipment The regeneration equipment is the preferred choice. Any modification or refinement made by those skilled in the art without departing from the spirit and scope of the present invention should be covered by the present invention. The scope of protection of the invention is defined by the scope of the appended patent application. In summary, the above-mentioned invention enhances the above-mentioned merits and effects, and should fully comply with the novelty and progressive statutory innovation patent requirements, and file an application in accordance with the law's request for approval of this invention. In order to create a creative experience. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a preferred embodiment of a reproducing apparatus in the present embodiment. Fig. 2 is an exploded view of the components of the regenerative device. Figure 3 is a cross-sectional view of the regenerative apparatus A-Α. 4 is a block diagram of an extraction system including the regeneration apparatus. [Explanation of main component symbols] 10... 11 ······ 12... Form No. A0101 Extraction Tower Containing Aromatic Hydrocarbon Light Oil Extraction Oil Page 17 of 25 Page 20962206658-0 201114754 • raffinate oil [0054] 13 [0055] 20... fractionation column [0056] 21... aromatic hydrocarbon product oil [0057] 22... lean tetrabutyl sulfone solvent [ 0058] 23...heat exchanger [0059] 30...regeneration equipment [0060] 31...oil inlet [0061] 32...oil outlet [0062] 33, 34, 35... ring frame [0063] 36... movable cover [0064] 37... high pressure container [0065] 40... Stainless steel tube [0066] 6 0...Magnetic rod [0067] 80...Filter cylinder [0068] 30a, 30b...Regeneration equipment 098136564 Form No. A0101 Page 18 / Total 25 pages 0982062658-0