兰州石化合成氨装置低温甲醇洗节能降耗流程改造
|
摘要
本文以目前国际能源价格上涨为背景,以兰州石化公司合成氨装置甲醇洗流程节能改造为契机,以实现装置的节能降耗,降低生产成本,提高企业竞争力为目的,采用过程系统能量集成技术,提出了合成装置的改造方案,主要工作有以下几个方面：
1.采用夹点技术,分析目前合成氨装置存在的问题,从本质上找用能出不合理的原因；
2.对低温甲醇洗系统进行热力学分析,找出合成氨原目前在节能方面存在的不足和节能潜力,提出合成氨装置低温甲醇洗系统流程节能改造方案及改造参数；
3.采用流程模拟软件,对低温甲醇洗流程进行模拟计算,并将计算结果与现场流程的工艺数据作了比较分析,确定改造后的效果,在保证装置生产能力和产品质量指标前提下,实现吨氨能耗下降1.2GJ/t。
Based on current international energy prices as a background, based on synthetic ammonia plant of lanzhou petrochemical company methanol wash process energy saving transformation, as an opportunity to realize the energy consumption and reduce unit production costs and enhance the competitiveness of enterprises for the purpose, using process system energy integration technology, puts forward the reconstruction plan of synthesis device and work mainly in the following aspects:
1. Using pinch technology, analyzed the current problems existing in the ammonia plant, from essentially find energy-using out unreasonable reasons。
2. Low-temperature methanol wash system of thermodynamics analysis, find out the original currently in energy consumption in ammonia the deficiencies and energy saving potential synthetic ammonia plant, puts forward the low-temperature methanol wash system flow energy saving renovation scheme and the modification paraineter。
3. Using process simulation software, to the low-temperature methanol wash process was simulated, and the calculated results with the field flow process data were compared and analyzed, and determine the effect after transforming, ensure device production capacity and product quality index premise, realize the energy consumption per ton of ammonia drop 1.2 GJ/t。
1.采用夹点技术,分析目前合成氨装置存在的问题,从本质上找用能出不合理的原因；
2.对低温甲醇洗系统进行热力学分析,找出合成氨原目前在节能方面存在的不足和节能潜力,提出合成氨装置低温甲醇洗系统流程节能改造方案及改造参数；
3.采用流程模拟软件,对低温甲醇洗流程进行模拟计算,并将计算结果与现场流程的工艺数据作了比较分析,确定改造后的效果,在保证装置生产能力和产品质量指标前提下,实现吨氨能耗下降1.2GJ/t。
Based on current international energy prices as a background, based on synthetic ammonia plant of lanzhou petrochemical company methanol wash process energy saving transformation, as an opportunity to realize the energy consumption and reduce unit production costs and enhance the competitiveness of enterprises for the purpose, using process system energy integration technology, puts forward the reconstruction plan of synthesis device and work mainly in the following aspects:
1. Using pinch technology, analyzed the current problems existing in the ammonia plant, from essentially find energy-using out unreasonable reasons。
2. Low-temperature methanol wash system of thermodynamics analysis, find out the original currently in energy consumption in ammonia the deficiencies and energy saving potential synthetic ammonia plant, puts forward the low-temperature methanol wash system flow energy saving renovation scheme and the modification paraineter。
3. Using process simulation software, to the low-temperature methanol wash process was simulated, and the calculated results with the field flow process data were compared and analyzed, and determine the effect after transforming, ensure device production capacity and product quality index premise, realize the energy consumption per ton of ammonia drop 1.2 GJ/t。
引文
[1]Kohl and Riesenfeld, "Gas Purification", Fourth Edition, Gulf Publishing Company Book Division (1985)
[2]唐宏青,低温甲醇洗净化技术,中氮肥,2008(1),1-7
[3]赖实正弘,定本省三等《工业化杂志》(183)72(10)2174-2177(1967)
[4]朱万美,《化肥与催化》,(2)21-29(1987),(3)19-28(1987)
[5]陈五平,《无机化工工艺学》,化学工业出版社(1981)
[6]唐宏青,《化学工程》,(5)57-63(1983)
[7]Linnhoff B, Hindmarsh E. Chem. Eng. Sci.,1983,38,745
[8]姚平经,《全过程系统能量优化综合》,大连理工大学出版社,1995
[9]姚平经.《过程系统分析与综合》.大连理工大学出版社,2004.2
[10]ASPEN PLUS 10.0用户手册
[11]张援越、SHELL渣油合成氨装置气化炉油改气运行总结、天然气化工、2006年第31卷43-45
[12]牛继舜、Kellogg合成氨工艺进展,大氮肥,1996年第19卷,第5期,329-332,340
[13]蒋德军,氨合成工艺技术的现状和发展,大氮肥,1997(5)
[14]张成芳,合成氨工艺与节能,华东化工学院出版社,1988
[15]陈运根,刘华彦,孙勤,程榕,贾继宁,氨合成工艺技术的新进展,化肥工业,第29卷,第5期,12-19
[16]李正西.塞勒克索尔(Selesol)气体净化工艺.化工厂设计,1981(3)：48-60
[17]马春梅等.低温甲醇洗工：艺浅析.应用能源技术2002(1)：10-11
[18]兰州石化公司.《合成案操作规程》2006
[19]兰州石化公司.《合成氨装置甲醇洗流程图》2001
[20]王祥云.合成氨净化技术进展(下)—脱硫技术的进展.化肥工业,2005,32(2)：19-28
[21]尚乃明.低温甲醇洗在我厂的应用.中氮肥,2001,(1)：36-37
[2]唐宏青,低温甲醇洗净化技术,中氮肥,2008(1),1-7
[3]赖实正弘,定本省三等《工业化杂志》(183)72(10)2174-2177(1967)
[4]朱万美,《化肥与催化》,(2)21-29(1987),(3)19-28(1987)
[5]陈五平,《无机化工工艺学》,化学工业出版社(1981)
[6]唐宏青,《化学工程》,(5)57-63(1983)
[7]Linnhoff B, Hindmarsh E. Chem. Eng. Sci.,1983,38,745
[8]姚平经,《全过程系统能量优化综合》,大连理工大学出版社,1995
[9]姚平经.《过程系统分析与综合》.大连理工大学出版社,2004.2
[10]ASPEN PLUS 10.0用户手册
[11]张援越、SHELL渣油合成氨装置气化炉油改气运行总结、天然气化工、2006年第31卷43-45
[12]牛继舜、Kellogg合成氨工艺进展,大氮肥,1996年第19卷,第5期,329-332,340
[13]蒋德军,氨合成工艺技术的现状和发展,大氮肥,1997(5)
[14]张成芳,合成氨工艺与节能,华东化工学院出版社,1988
[15]陈运根,刘华彦,孙勤,程榕,贾继宁,氨合成工艺技术的新进展,化肥工业,第29卷,第5期,12-19
[16]李正西.塞勒克索尔(Selesol)气体净化工艺.化工厂设计,1981(3)：48-60
[17]马春梅等.低温甲醇洗工：艺浅析.应用能源技术2002(1)：10-11
[18]兰州石化公司.《合成案操作规程》2006
[19]兰州石化公司.《合成氨装置甲醇洗流程图》2001
[20]王祥云.合成氨净化技术进展(下)—脱硫技术的进展.化肥工业,2005,32(2)：19-28
[21]尚乃明.低温甲醇洗在我厂的应用.中氮肥,2001,(1)：36-37