【摘要】：隨著原料重質(zhì)化日益嚴(yán)重,重油催化裂化裝置面臨結(jié)焦嚴(yán)重的問(wèn)題,不僅限制了長(zhǎng)周期運(yùn)行,在加工過(guò)程中能量的消耗也隨之增加,因此降低能耗、長(zhǎng)周期運(yùn)行成為了石油加工過(guò)程重點(diǎn)考慮的方向。本論文以大慶煉化公司一套ARGG裝置為研究對(duì)象,該裝置處理量為100萬(wàn)噸/年,采用雙提升管的FDFCC技術(shù)。針對(duì)裝置能耗高的問(wèn)題,對(duì)裝置運(yùn)行情況進(jìn)行分析,找出了裝置存在的問(wèn)題,提出了優(yōu)化方案以及改進(jìn)措施。根據(jù)工業(yè)標(biāo)定數(shù)據(jù)得出結(jié)論:反應(yīng)汽提蒸汽量偏大,煙機(jī)回收功率偏低,原料霧化效果差是裝置能耗高的主要原因;通過(guò)在再生器與提升管之間新增CRC-再生劑冷卻器,使得產(chǎn)品分布得到優(yōu)化并且節(jié)能效果顯著;進(jìn)一步對(duì)煙機(jī)結(jié)垢影響裝置長(zhǎng)周期運(yùn)行因素進(jìn)行了分析,提出對(duì)三級(jí)旋分器進(jìn)行改造的舉措,改善了裝置長(zhǎng)周期運(yùn)行的瓶頸狀態(tài)。通過(guò)對(duì)煙氣輪機(jī)、反應(yīng)汽提段、進(jìn)料噴嘴、三旋分離器系統(tǒng)進(jìn)行了一系列的技術(shù)改造,以及對(duì)裝置一些用能不合理的工藝及流程進(jìn)行了整改和優(yōu)化,2010年裝置綜合能耗為63.94 KgEO/t,扣除汽油提升管的能耗影響其綜合能耗共計(jì)下降了33.07個(gè)單位。CRC-FCC技術(shù)改造后干氣+焦炭+損失收率低1.49個(gè)百分點(diǎn)、油漿收率降低0.42個(gè)百分點(diǎn)、輕收高2.3個(gè)百分點(diǎn)、液收高1.9個(gè)百分點(diǎn)、能耗實(shí)際降低10.26kgoil/t,總效益為8716.1萬(wàn)元/年。目前PHT-Ⅲ250分離單管在我裝置已高效運(yùn)行15個(gè)月,不僅年可增加經(jīng)濟(jì)效益384萬(wàn)元,而且為裝置的長(zhǎng)周期安全穩(wěn)定運(yùn)行提供了有利保證。
[Abstract]:With the heavy feedstock becoming more and more serious, the heavy oil catalytic cracking unit is facing the serious problem of coking, which not only limits the long period operation, but also increases the energy consumption during the processing process, thus reducing the energy consumption. Long-period operation has become the focus of the oil processing process. This paper takes a set of ARGG plant in Daqing Refinery and Chemical Company as the research object. The processing capacity of the unit is 1 million tons per year, and the double riser FDFCC technology is adopted. Aiming at the problem of high energy consumption, the operation of the unit is analyzed, the existing problems of the device are found out, and the optimization scheme and improvement measures are put forward. According to the industrial calibration data, it is concluded that the main reasons for the high energy consumption are the large amount of reaction steam stripping, the low recovery power of the smoke machine and the poor atomization effect of raw materials, and the addition of the CRC- regenerative cooler between the regenerator and the riser, The distribution of the product is optimized and the effect of energy saving is remarkable. Further, the factors affecting the long-period operation of the device are analyzed, and the measures of reforming the three-stage rotary separator are put forward to improve the bottleneck state of the device in long-period operation. A series of technical revamping has been carried out on flue gas turbine, reaction stripping section, feed nozzle and three-screw separator system. And the process and process of some unreasonable energy use of the unit were improved and optimized. In 2010, the comprehensive energy consumption of the unit was 63.94 KgEO/t, minus the energy consumption of gasoline riser. The total comprehensive energy consumption of the unit was reduced by 33.07 units. CRC-FCC technology was retrofitted and dried. The yield of gas coke loss is 1.49% lower. The oil slurry yield is reduced by 0.42 percentage points, the light yield is increased by 2.3 percentage points, the liquid yield is increased by 1.9 percentage points, the energy consumption is reduced by 10.26 kgoil / t, and the total benefit is 87.161 million yuan per year. At present, the PHT- 鈪，

本文編號(hào)：2250382