尿素装置增产改造技术交流【行业特制】.ppt
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1、荷兰荷丰技术公司工程部,FUNGHAN ENGINEERING,北京丰汉工程技术有限公司,尿素装置增产节能改造Urea Revamp,1,专家资料,Urea Revamp,尿素生产技术主要有水溶液全循环工艺和氨/CO2汽提工艺。该增产节能改造技术是在CO2汽提法尿素生产工艺以及大颗粒尿素造粒工艺的基础上完成的。,Urea production technology is mainly about full circulation of the aqueous solution process and ammonia/CO2 stripping process. Our revamp techn
2、ology is mainly applied to the CO2 stripping urea production technology and green granulation technology.,2,专家资料,Urea Revamp,CO2汽提法尿素合成工艺改造 Urea Synthesis Revamp for CO2 Stripping Process,3,专家资料,蒸发真空冷凝段,废水处理段,合成塔 HP synthetic tower,高压洗涤器 HP Scrubber,高压冷凝器 HP Carbamate Condenser,脱氢反应器 Dehydrogenation
3、 reactor,CO2压缩机 CO2 Compressor,汽提塔,一段蒸发器 Evaporation,高压甲铵泵 HP Carbamate Pump,氨泵 Ammonia Pump,低压吸收塔 LP Absorber,精馏塔 Rectify,蒸发段,低压段,高压段,熔融尿素去,造粒装置,HP synthesis stage,LP stage,Evaporation stage,CO2汽提工艺流程示意简图CO2 stripping process flow scheme,CO2 Stripper,Melting urea to granulation,4,专家资料,装置的特点plant fe
4、atures,1. 高压氨泵和CO2压缩系统都有备机,可以满足扩产的需要。 Both high ammonia pumps and CO2 compressor system have been prepared to meet expansion requirements. 2. 高压循环系统设备成为瓶颈。增加该部分设备投资大。 In the expansion process, equipments in the high pressure stage is to be the bottleneck, which will cause a great investment if incre
5、ase.,需要改造的装置一般都具有以下特点: Generally, the plant has the following features.,5,专家资料,丰汉工程建议方案 Funghan proposal,丰汉工程公司建议 使用增加中压分解段的方式完成扩产改造的目的,Funghan propose to add a MP stage to complete expansion.,6,专家资料,丰汉工程建议方案 Funghan proposal,尿素合成段增产改造的基本原则 Basic principles for urea synthesis section revamp,尽量少动或不动高
6、压段 as little as possible, even not revamp high pressure synthesis section 改造后原装置仍可独立运行 original plant can still operation independently after revamp 尽可能的减少投资 as much as possible to reduce investment 4. 节能降耗及减排 save energy and reduce emission,7,专家资料,丰汉工程建议方案Funghan proposal,增加中压分解段的技术背景 technical bac
7、kground of MP stage,最早水溶液全循环技术即有中压段 initial full circulation of the aqueous solution process technology has a MP stage CO2汽提引进中国后,有多种方案改进系统,增加中压段来增产改造是其中的一种方案 When ammonia stripping technology was introduced in to China, there are many proposals to improve the system, adding a MP stage to increase p
8、roduction is one of proposals.,8,专家资料,丰汉工程建议方案Funghan proposal,增加中压分解段的技术背景 technical background of MP stage,3. 丰汉工程公司多年前即开始开发该技术 Funghan Engineering company began developing this technology many years ago. 4. 在国内的改造中使用了该方案 In China, this proposal has been used in the revamp of some urea plant.,9,专家
9、资料,丰汉工程建议方案 Funghan proposal,增加中压段流程示意图 PFS for adding MP stage,蒸发真空冷凝段,废水处理段,汽提塔,蒸发段,低压段,高压段,熔融尿素去,造粒装置,HP synthesis stage,LP stage,Evaporation stage,合成塔 HP synthetic tower,高压洗涤器 HP Scrubber,高压冷凝器 HP Carbamate Condenser,脱氢反应器 Dehydrogenation reactor,CO2压缩机 CO2 Compressor,一段蒸发器 Evaporation,高压甲铵泵 HP
10、Carbamate Pump,氨泵 Ammonia Pump,低压吸收塔 LP Absorber,精馏塔 Rectify,CO2 Stripper,Melting urea to granulation,10,专家资料,丰汉工程建议方案Funghan proposal,蒸发真空冷凝段,废水处理段,中压,甲铵,冷凝器 MPCC,中压分离器 MP Separator,汽提塔,低压甲铵泵 LP Carbamate pump,中压汽提塔 MP Stripper,蒸发段,低压段,中压段,高压段,熔融尿素去,造粒装置,HP synthesis stage,MP stage,LP stage,Evapora
11、tion stage,增加中压段流程示意图PFS for adding MP stage,高压洗涤器 HP Scrubber,高压冷凝器 HP Carbamate Condenser,脱氢反应器 Dehydrogenation reactor,CO2压缩机 CO2 Compressor,一段蒸发器 Evaporation,高压甲铵泵 HP Carbamate Pump,氨泵 Ammonia Pump,低压吸收塔 LP Absorber,精馏塔 Rectify,CO2 Stripper,Melting urea to granulation,合成塔 HP synthetic tower,11,专
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