由于新增一股加氢裂化石脑油,某炼厂连续重整装置由60万t/a改造至80万t/a,原设计的重整汽油辛烷值为102。为缩短改造周期,确定以再生系统利旧、重整循环氢压缩机不动改为改造的前提条件,装置通过适当降低苛刻度至RON101,采用重整催化剂换季、新增板式换热器、"四合一"加热炉增加炉管、重整产物空冷器由湿空冷代替原来的干空冷、更新塔盘、更换两台再接触罐、改造氨冷冻系统、更换换热器及更换机泵等手段顺利完成了装置的扩能改造。同时为了在紧急停车情况下保护重整反应器内构件和进料换热器,增加了低流量低加热模式的流程管线。装置改造后的能耗降低了7.8 kcal/t重整进料。标定结果表明,该装置在80万t/a的规模下可以生产辛烷值为101的重整汽油。

The capacity of CCR unit in a refinery was revamped from 600 to 800 kt/a through adding a new stream of hydrocracking naphtha. The reformate RON of original unit was 102. In order to reduce the revamping period, under the condition that continuous regeneration system and recycle compressor were not changed ,the unit expansion was successfully achieved by reducing reformate RON to 101, replacement of reforming catalyst, addition of tubes to the furnace, replacement of vertical heat exchanger with plate heat exchanger, replacing products condenser by wet air cooler, revamping of tower, replacement of recontact-drum No.1 and recontact-drum No.2, revamping of refrigerator system, revamping of exchangers and pumps. At the same time a low flow and low firing mode flow was added in order to protect reactor internals and plate heat exchanger in case of emergency shutdown. The consumption was reduced by 7.8 kg EO/t compared to original unit. The result of calibration shows that the revamped uni

针对氨水吸收/压缩复合制冷循环的方式不同，结合 Schulz 氨水溶液状态方程，分别对压缩机处于系统高压区和低压区2种不同的组合方式进行了理论分析计算。分析了在给定中间压力下，蒸发温度 Te、热源温度 Th 和冷却水温度 Tw 对2种组合方式下压缩机当量热耗量 qCW、热源耗热量 qG 和循环性能系数 COP的影响。结果表明：压缩机当量热耗量对循环性能系数的影响要低于热源耗热量的影响；压缩机处于系统高压区时循环的一次用能量要明显高于压缩机处于系统的低压区；压缩机处于系统低压区时循环性能要优于压缩机处于系统的高压区。当中间压力给定时，存在一个最佳热源温度，使得氨水吸收/压缩复合制冷循环的性能系数取得最大值。

In view of different compressor adding ways in the ammonia-water absorption/compression combined refrigeration AWA /CCR cycle combining the Schulz state equation of the ammonia-water solution the theoretical analysis and calculations on two combination ways by adding the compressor in the high-pressure area and in the low-pressure area are conducted respectively.The effects of several factors including the evaporation temperature Te heat-source temperature Th as well as the cooling water temperature Tw on the equivalent heat consumption in compression qCW heat consumption in absorption qG and the system coefficient of performance COP are analyzed under the two combination configurations.The results show that the effect of the equivalent heat consumption in compression on the COP is less than that of the heat consumption in absorption.Besides the compressor set in the high-pressure area uses more energy than that in the low-pressure area. Moreover the compressor in the low-pressure area

对加氢装置的新氢-循环氢活塞式压缩机(k1-101)循环级汽缸填料频繁泄漏的情况,从结构原理和密封条件方面进行了研究,分析了影响压缩机汽缸填料失效的主要原因,并提出了相应的预防和整改措施。

This article studies the new hydrogen hydrogenation device factory recycle hydrogen compressor (No.K1-101)leaking based on the structure principle and sealing condition, analyzes the main reason of compressor packing failure and puts forward some improvement measures and methods.

从原料油缓冲罐压力、反应进料泵最小流量返回、高压分离器液位、冷高压分离器及新氢压缩机压力、循环氢压缩机防喘振和反应器温度等方面介绍了加氢裂化装置反应部分的主要控制方案。

Main control plan of reaction system in hydrocracking unit was introduced from some aspects, such as the pressure of feed surge drum, minimum return flow of feed pump, liquid level of separator,pressures of cold separator and fresh hydrogen compressor, anti-surge of recycle gas compressor , reactor temperature and on so.

介绍低温甲醇洗工艺中循环气压缩机的选型要点，并结合实践经验提出设计、制造中应关注的一些细节。

Describe the points of choosing recycle gas compressor type in rectisol unit , and propose some details should be concerned about in design and manufacture according to the experience .