尿素装置增产改造技术交流.ppt

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1、荷兰荷丰技术公司工程部YourprovenpartnerintechnologytransfertoChina1FUNGHANENGINEERING北京丰汉工程技术有限公司尿素装置增产节能改造UreaRevampUreaRevampYourprovenpartnerintechnologytransfertoChina2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。Ureaproductiontechnologyismainlyaboutfull

2、circulationoftheaqueoussolutionprocessandammonia/CO2strippingprocess.OurrevamptechnologyismainlyappliedtotheCO2strippingureaproductiontechnologyandgreengranulationtechnology.UreaRevampYourprovenpartnerintechnologytransfertoChina3CO2汽提法尿素合成工艺改造UreaSynthesisRevampforCO2Stri

3、ppingProcessYourprovenpartnerintechnologytransfertoChina4蒸发真空冷凝段废水处理段合成塔HPsynthetictower高压洗涤器HPScrubber高压冷凝器HPCarbamateCondenser脱氢反应器DehydrogenationreactorCO2压缩机CO2Compressor汽提塔一段蒸发器Evaporation高压甲铵泵HPCarbamatePump氨泵AmmoniaPump低压吸收塔LPAbsorber精馏塔Rectify蒸发段低压段高压段熔融尿素去造粒装置HPs

4、ynthesisstageLPstageEvaporationstageCO2汽提工艺流程示意简图CO2strippingprocessflowschemeCO2StripperMeltingureatogranulation装置的特点plantfeaturesYourprovenpartnerintechnologytransfertoChina51.高压氨泵和CO2压缩系统都有备机，可以满足扩产的需要。BothhighammoniapumpsandCO2compressorsystemhavebeenpreparedtomeetexp

5、ansionrequirements.2.高压循环系统设备成为瓶颈。增加该部分设备投资大。Intheexpansionprocess,equipmentsinthehighpressurestageistobethebottleneck,whichwillcauseagreatinvestmentifincrease.需要改造的装置一般都具有以下特点：Generally,theplanthasthefollowingfeatures.丰汉工程建议方案FunghanproposalYourprovenpartnerintechnologyt

6、ransfertoChina6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FunghanproposetoaddaMPstagetocompleteexpansion.丰汉工程建议方案FunghanproposalYourprovenpartnerintechnologytransfertoChina7尿素合成段增产改造的基本原则Basicprinciplesforureasynthesissectionrevamp尽量少动或不动高压段aslittleaspossible,evennotrevamphighpressures

7、ynthesissection改造后原装置仍可独立运行originalplantcanstilloperationindependentlyafterrevamp尽可能的减少投资asmuchaspossibletoreduceinvestment4.节能降耗及减排saveenergyandreduceemission丰汉工程建议方案FunghanproposalYourprovenpartnerintechnologytransfertoChina8增加中压分解段的技术背景technicalbackgroundofMPstage最早水溶液

8、全循环技术即有中压段initialfullcirculationoftheaqueoussolutionprocesstechnologyhasaMPstageCO2汽提引进中国后，有多种方案