年產(chǎn)五萬噸合成氨合成工段工藝設(shè)計(jì)

1、0 目錄 中文摘要 .............................................................. 1 英文摘要 .............................................................. 2 1 引言 ............................................................... 3 1.1

2、 氨的基本用途 .................................................... 3 1.2 合成氨技術(shù)的發(fā)展趨勢 ............................................ 4 1.3 合成氨常見工藝方法 .............................................. 4 1.3.1 高壓法 .....................

3、.................................. 5 1.3.2 中壓法 ....................................................... 5 1.3.3 低壓法 ....................................................... 5 1.4 設(shè)計(jì)條件 ....................................

4、.................... 5 1.5 物料流程示意圖 .................................................. 6 2 物料衡算 ........................................................... 8 2.1 合成塔入口氣組成 ................................................

5、8 2.2 合成塔出口氣組成 ................................................ 8 2.3 合成率計(jì)算 ...................................................... 9 2.4 氨分離器出口氣液組成計(jì)算 ....................................... 10 2.5 冷交換器分離出的液體組成 ..........

6、............................. 13 2.6 液氨貯槽馳放氣和液相組成的計(jì)算 ................................. 13 2.7 液氨貯槽物料衡算 ............................................... 15 2.8 合成循環(huán)回路總物料衡算 ......................................... 17 3 能量

7、衡算 .......................................................... 28 3.1 合成塔能量衡算 ................................................. 28 3.2 廢熱鍋爐能量衡算 ................................................ 30 3.3 熱交換器能量衡算 ...........

8、.................................... 31 3.4 軟水預(yù)熱器能量衡算 ............................................. 32 3.5 水冷卻器和氨分離器能量衡算 ..................................... 33 3.6 循環(huán)壓縮機(jī)能量衡算 ............................................

9、. 35 3.7 冷交換器與氨冷器能量衡算 ....................................... 36 3.8 合成全系統(tǒng)能量平衡匯總 ......................................... 38 4 設(shè)備選型及管道計(jì)算 ................................................. 40 4.1 管道計(jì)算 ....................

10、................................... 40 4.2 設(shè)備選型 ....................................................... 42 結(jié)論 ................................................................. 43 致謝 ......................................

11、........................... 44 參考文獻(xiàn) ............................................................. 45 2 The Design of 50kt/a Synthetic Ammonia Process Abstract: There are many types of Ammonia synthesis technology and pr

12、ocess, Generally,they includes ammonia synthesis, separation and recycling, inert gases Emissions and other basic steps, Combining the above basic steps turnning into the ammonia synthesis reaction and recycling process

13、, in which ammonia synthesis section is the central part of a synthetic ammonia process. The task of curriculum design is the ammonia synthesis section of an annual fifty thousand tons synthetic ammonia plant . The comp

14、osition of fresh feed gas is: H2(73.77%),N2(24.56%),CH4(1.27%),Ar(0.4%), the temperature is 35℃, the operating pressure is 31MPa, the inlet gas composition of the Reactor is : NH3(3.0%),CH4+Ar(15.7%),it Requires the mo

15、le fraction of ammonia reacheds to 16.8% of outlet gas of synthesis reactor. By consulting the relevant literature and information,we designed the ammonia synthesis section of an annual fifty thousand tons synthetic amm

16、onia plant, with the help of CAD technology,we designed piping and instrument diagram and equipment layout. Finally,we did the material balance accounting ,and the energy balance accounting of the process, also we select