石油炼制与化工
石油煉製與化工
석유련제여화공
PETROLEUM PROCESSING AND PETROCHEMICALS
2014年
7期
62-67
,共6页
延迟焦化%加热炉%在线清焦%影响因素
延遲焦化%加熱爐%在線清焦%影響因素
연지초화%가열로%재선청초%영향인소
delayed coking%heating furnace%online decoking%influence factor
介绍了在线清焦技术在中国石油乌鲁木齐石化公司1．20 Mt/a 延迟焦化装置加热炉上应用的具体操作过程、操作中所遇到的问题、解决方法以及应用效果。应用在线清焦技术后，炉管表面温度下降80℃以上，燃料气用量减少500 m3/h（标准状态），有效延长了加热炉运行时间，为全装置达到三年一修提供了有力保障。影响清焦效果的主要因素有：升降温温差、升降温速率、清焦操作时间、炉管结焦厚度等。恒温时瓦斯用量变化、各炉管表面之间温差、炉管表面与分支出口温差都可作为在线清焦成功与否的判定依据。
介紹瞭在線清焦技術在中國石油烏魯木齊石化公司1．20 Mt/a 延遲焦化裝置加熱爐上應用的具體操作過程、操作中所遇到的問題、解決方法以及應用效果。應用在線清焦技術後，爐管錶麵溫度下降80℃以上，燃料氣用量減少500 m3/h（標準狀態），有效延長瞭加熱爐運行時間，為全裝置達到三年一脩提供瞭有力保障。影響清焦效果的主要因素有：升降溫溫差、升降溫速率、清焦操作時間、爐管結焦厚度等。恆溫時瓦斯用量變化、各爐管錶麵之間溫差、爐管錶麵與分支齣口溫差都可作為在線清焦成功與否的判定依據。
개소료재선청초기술재중국석유오로목제석화공사1．20 Mt/a 연지초화장치가열로상응용적구체조작과정、조작중소우도적문제、해결방법이급응용효과。응용재선청초기술후，로관표면온도하강80℃이상，연료기용량감소500 m3/h（표준상태），유효연장료가열로운행시간，위전장치체도삼년일수제공료유력보장。영향청초효과적주요인소유：승강온온차、승강온속솔、청초조작시간、로관결초후도등。항온시와사용량변화、각로관표면지간온차、로관표면여분지출구온차도가작위재선청초성공여부적판정의거。
The application of on-line coke cleaning technology in the furnace of 1.2 Mt/a delayed co-king device in Urumqi Petrochemical Company is introduced. The problems and countermeasures during the process and the effect were described. The surface temperature of the furnace tube decreases by more than 80 ℃,and 500 m3/h fuel gas consumption are saved due to the application of the technology. The life time of the furnace is effectively prolonged,meeting the three year overhaul period. The main factors affecting coke cleaning are:difference of high and low temperature of tube,rate of heating and cooling temperature,decoking process time,thickness of coke in furnace tube. The changes of gas con-sumption at constant temperature,surface temperature difference of each furnace tube,and temperature difference between the furnace tube surface and branch outlet can be used as a success criterion for the process.
