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FUNGHAN ENGINEERING
北京丰汉工程技术有限企业
尿素装置增产节能改造 Urea Revamp
Urea Revamp
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尿素生产技术重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毕的。
Urea production technology is mainly about full circulation of the aqueous solution process and ammonia/CO2 stripping process. Our revamp technology is mainly applied to the CO2 stripping urea production technology and green granulation technology.
Urea Revamp
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CO2汽提法尿素合成工艺改造
Urea Synthesis Revamp for CO2 Stripping Process
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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 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
低压吸取塔
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
装置的特点 plant features
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1. 高压氨泵和CO2压缩系统均有备机，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。增长该部分设备投资大。
In the expansion process, equipments in the high pressure stage is to be the bottleneck, which will cause a great investment if increase.
需要改造的装置一般都具有如下特点：
Generally, the plant has the following features.
丰汉工程提议方案 Funghan proposal
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丰汉工程企业提议
使用增长中压分解段的方式完毕扩产改造的目的
Funghan propose to add a MP stage to complete expansion.
丰汉工程提议方案 Funghan proposal
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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
尽量的减少投资
as much as possible to reduce investment
4. 节能降耗及减排
save energy and reduce emission
丰汉工程提议方案 Funghan proposal
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增加中压分解段的技术背景
technical background 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，有多种方案改善系统，增长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 production is one of proposals.
丰汉工程提议方案 Funghan proposal
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增加中压分解段的技术背景
technical background of MP stage
3. 丰汉工程企业数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.
丰汉工程提议方案 Funghan proposal
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10
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
Dehydrog