宋傳陽 蔣旭 劉景宇 等



摘 要:我國大部分油田隨著原油含水量的逐年上升,油水分離能力均因擴(kuò)容困難而不能滿足生產(chǎn)需要。旋流除油裝置是在離心力的作用下根據(jù)兩相間的密度差來實(shí)現(xiàn)分離的,由于離心力場(chǎng)的強(qiáng)度比重力場(chǎng)大得多,因此旋流除油裝置比重力分離設(shè)備的效率大得多,同時(shí)具有結(jié)構(gòu)簡(jiǎn)單、體積小、重量輕、處理時(shí)間短等特點(diǎn)。依據(jù)相關(guān)試驗(yàn)對(duì)旋流除油裝置的反相破乳劑加藥濃度、溢流比、處理量等參數(shù)進(jìn)行了優(yōu)選,最終結(jié)合現(xiàn)場(chǎng)生產(chǎn)情況對(duì)整個(gè)試驗(yàn)作出評(píng)價(jià),分析存在的問題并提出了相應(yīng)建議。
關(guān) 鍵 詞:旋流除油;加藥濃度;溢流比;除油效率
中圖分類號(hào):TE 624 文獻(xiàn)標(biāo)識(shí)碼: A 文章編號(hào): 1671-0460(2015)10-2406-04
Oil Removal Experiments of Fengcheng Extra-heavy
Wastewater From the Sedimentation Tank by Cyclone
SONG Chuan-yang, JIANG Xv, LIU Jing-yu, GUAN Zheng, ZHANG Yu
(Xinjiang Petroleum Survey and Design Institute Co.,Ltd., Xinjiang Karamay 834000,China)
Abstract: In most oil fields in China, with the increasing of water content in crude oil, oil/water separation capability decreases due to production expansion,and cannot meet the production needs. The swirl oil removal device is to realize the separation by the density difference between the two phases under the action of centrifugal force, so the swirl oil removal device has much higher efficiency than the gravity separation equipment, and it has a simple structure, small volume, light weight, short processing time and so on. In this paper, based on the related test, reverse demulsifier dosing concentration, overflow ratio, treatment capacity and other parameters of the hydrocyclone oil removal device were optimized. Finally combined with the production situation, the whole test was evaluated, existing problems were analyzed, and the corresponding suggestions were put forward.
Key words: Swirl oil removal; Dosing concentration;Overflow ratio;Oil removal efficiency
1 研究背景及國內(nèi)外現(xiàn)狀
隨著風(fēng)城油田重32、重37 SAGD開發(fā)區(qū)塊相繼投產(chǎn)(SAGD產(chǎn)液具有含粉泥、含砂量大等特點(diǎn)), 采出液進(jìn)入特1聯(lián)后,原油脫水較為困難,特1聯(lián)沉降罐出水含油大幅升高(均值約為15 000 mg/L),嚴(yán)重影響采出水處理系統(tǒng)運(yùn)行。因此,需對(duì)特1聯(lián)污水除油相關(guān)工藝開展試驗(yàn)。
水力旋流器在一個(gè)世紀(jì)前就廣泛用于固-液分離,但用于液-液分離技術(shù)時(shí)間很短。1980年英國南漢普頓大學(xué)Martin Thew 教授首先發(fā)表了水力旋流器用于液-液分離的研究成果,后由CONOCO公司迅速將此成果轉(zhuǎn)化為污水除油設(shè)備。
在國內(nèi),上世紀(jì)70年代末就有研究單位開始液-液旋流分離技術(shù)的嘗試。到本世紀(jì)初期,中國石油大學(xué)在流場(chǎng)模擬、軟件的編制、旋流管結(jié)構(gòu)的室內(nèi)實(shí)驗(yàn)篩選以及現(xiàn)場(chǎng)工業(yè)性生產(chǎn)實(shí)驗(yàn)都取得了較好的成績(jī)[1]?!?br>