化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2014年
9期
2293-2297
,共5页
万宇飞%邓道明%刘霞%曾德春%李洪福%李立婉%薛君昭
萬宇飛%鄧道明%劉霞%曾德春%李洪福%李立婉%薛君昭
만우비%산도명%류하%증덕춘%리홍복%리립완%설군소
掺稀稠油%加热输送%黏度%工艺特性%安全%输送能力
摻稀稠油%加熱輸送%黏度%工藝特性%安全%輸送能力
참희주유%가열수송%점도%공예특성%안전%수송능력
diluted heavy crude%heated transportation%viscosity%flow characteristics%safety%pipelining capacity
对国内某 WK 掺稀稠油保温管道,进行工艺特性分析和安全输送能力计算。结果表明:①加热输送的掺稀稠油管道存在随输量减小压降急剧增大的不稳定区;②掺稀比增大时,管道的不稳定工作区左移,安全输送的临界输量减小,有利于管道在低输量下安全运行;③最大输送能力并非随掺稀比或首站出站油温单调递增;在某一掺稀比和/或首站出站油温下,WK 掺稀稠油管道具有最大输送能力;④WK 线的整体压降受掺稀比、输量的影响较大,但季节对压降的影响很小;⑤WK线整体温降主要受输量影响,而掺稀比、季节对其影响不大;⑥对于同一种掺稀比稠油和同样的出站温度,在不同季节下的末站进站温度、临界输量以及最大输送能力相近。
對國內某 WK 摻稀稠油保溫管道,進行工藝特性分析和安全輸送能力計算。結果錶明:①加熱輸送的摻稀稠油管道存在隨輸量減小壓降急劇增大的不穩定區;②摻稀比增大時,管道的不穩定工作區左移,安全輸送的臨界輸量減小,有利于管道在低輸量下安全運行;③最大輸送能力併非隨摻稀比或首站齣站油溫單調遞增;在某一摻稀比和/或首站齣站油溫下,WK 摻稀稠油管道具有最大輸送能力;④WK 線的整體壓降受摻稀比、輸量的影響較大,但季節對壓降的影響很小;⑤WK線整體溫降主要受輸量影響,而摻稀比、季節對其影響不大;⑥對于同一種摻稀比稠油和同樣的齣站溫度,在不同季節下的末站進站溫度、臨界輸量以及最大輸送能力相近。
대국내모 WK 참희주유보온관도,진행공예특성분석화안전수송능력계산。결과표명:①가열수송적참희주유관도존재수수량감소압강급극증대적불은정구;②참희비증대시,관도적불은정공작구좌이,안전수송적림계수량감소,유리우관도재저수량하안전운행;③최대수송능력병비수참희비혹수참출참유온단조체증;재모일참희비화/혹수참출참유온하,WK 참희주유관도구유최대수송능력;④WK 선적정체압강수참희비、수량적영향교대,단계절대압강적영향흔소;⑤WK선정체온강주요수수량영향,이참희비、계절대기영향불대;⑥대우동일충참희비주유화동양적출참온도,재불동계절하적말참진참온도、림계수량이급최대수송능력상근。
This paper investigated the thermo-hydraulic characteristics of diluted heavy crude insulated WK pipeline,and calculated the safe flow rate ranges. Results showed:①Unsteady working zones, which demonstrate sharp increases in pressure losses with decreased flow rates,occurred to the hot diluted heavy crude pipeline. ②With increasing dilution ratios,the unsteady zones moved to smaller flow rates,and hence safe working zones of the pipeline were enlarged. ③The maximum throughputs of WK pipeline did not increase monotonously with dilution ratios or/and its inlet temperatures,and its maximum pipelining capacities took place at certain dilution ratios and inlet temperatures. ④The total pressure drops of WK pipeline were considerably affected by dilution ratios and flow rates,but not by seasons. ⑤Flow rates had significant impacts on the total temperature drops of WK pipeline,but dilution ratios and seasons did not have such impacts. ⑥With regard to the same dilution ratios and inlet temperatures,the outlet temperatures,critical flow rates and the maximum throughputs of the pipeline differed little in different seasons.