fluid bed technology and catalyst of propane & isobutane dehydrogenation
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Fluid Bed Technology and Catalyst of Propane & Isobutane Dehydrogenation. By ReZel Catalysts. Background. - PowerPoint PPT PresentationTRANSCRIPT
Fluid Bed Technology and Catalyst of Propane &
IsobutaneDehydrogenation
By ReZel Catalysts
Propane and Isobutane are relatively cheap
petrochemical products, whereas propylene and
isobutene are high value added products.
Therefore, propylene production via propane
dehydrogenation; isobutene production via
isobutane dehydrogenation and further MTBE
production via further reaction with methanol
have significant commercial value.
Background
Background-continued
• ReZel has developed a new fluid bed technology and supporting catalyst for producing propylene and isobutene via propane and isobutane dehydrogenation, respectively. This technology use fluid bed reactor, continuously circulated and regenerated catalyst process similar to that of FCC process.
Background-continued
• ReZel’s patented fluid bed non-interrupted regenerated catalyst does not contain precious metal such as platinum (Pt) and palladium (Pd) and is therefore cost effective. This technology is called RGTP.
反应炉
闪蒸罐
空冷
闪蒸罐
产品压缩机
空冷
闪蒸罐
冷箱
PSA
蒸汽
锅炉给水
烟囱
烟道气
蒸汽锅炉给水
干燥器
产品
锅炉给水
H2(任选)
燃料气
异丁烷
加热器空气加热器
吹扫段反应器 加工段反应器 再生段反应器
产品压缩机
冷箱干燥器
异丁烷
循环异丁烷
空气
燃料
气化器
蒸汽排气
H2(任选)
燃料气变压吸附
闪蒸罐
冷却器
空气冷却器
蒸汽发生器
热交换器
产品
1 1 1
2 6
3
4
7
8
5循环H2
产品
轻组分
新鲜和循环原料回收利用
1. 反应器, 2. CCR装置, 3. 压缩机, 4. 干燥器, 5. 冷箱, 6. 透平膨胀机,7. 分离器, 8. 分馏
中间加热器
Other company’s propane/isobutane dehydrogenation technology
催化剂提升管
锁紧箱
锁紧箱提升接合器
提升气N2
提升接合器
平衡箱
流量控制箱
再生塔
分离箱
粉尘捕集器
提升气鼓风机
提升气
反应器
反应器
Star ( PhillipsCombustion Tube , Pt-Sn/Al ) Catofin ( LummusFixed Bed , Cr/Al )
Oleflex ( UOP)Catalyst Regeneration ( CCR ,Pt/Al)
Conv.45-55%Sel.85-95%Time : 8hs
MovingBed
Conv.60-65%Sel.-95%Time : 25Mins
Conv.45-55%Sel.-91%Time : 2-7d
反应器
再生器
换热器
热交换器
过滤器
压缩机
空气压缩机
烟道气过滤器
干燥器 冷 箱
冷却器
脱丙烷塔
分离器
再生空气
烟道气
烟囱
轻组分
产品
原料气化器
异丁烷
A D1
2
8
9
10B
C G
EF3 3
4 7
5 6
1. 异丁烷原料2. 汽提N2
3. 提升气4. 反应器出口5. 再生过的催化剂6. 使用过的催化剂7. 烟道气8. 再生空气9. 燃料10. 汽提N2
A. 反应B. 解吸C. 输送管线D. 再生E. 还原F. 解吸G. 输送管线H. 旋风分离器
FBD-4 ( Russia )( Cr/Al ) Reaction -Regeneration System
Linde ( Conv.40-45% , Sel.91-
95% , Time : 9hrs )
( Similar to Star ) Different
Catalyst ( Cr/Al )
Circulating Fluid Bed :Continuous
operation , Variable size
Stable operation , Low
cost
Conv.50-55%Sel.85-91%Time : Continuous
ReZel RGTP Process Flow
再生器
流化床反应器
CO2分析仪
裂化气
气液分离塔
PT2
PT3
TC1
TC3
TC5
TC6
TC9
TC23
TC22
TC25
TC24
TC17
TC13
TC11
TC20
TE29
TC30
TE42
TE31
TE44
PC
冷冻液
TE19
油泵
TC 37
雾化水炉
TE28
脱液罐
TC27
TC8
待塞阀
制冷机TE45
TC26
快速床脱氢中型试验装置流程示意图
电子称1
WT4
TC12
TC18
TC41
TC43
H2
H1
H4
H3
提升管
H5
PC
蒸馏水
电子称1
WT1
TC34
TC33
TC3
蒸馏水
电子称1
WT1
蒸馏水
电子称1
WT3
列管冷凝
蒸馏水
电子称1
WT2
TC35 TC
36
快速床
列管冷凝
除粉罐
分液罐
塞阀
塞阀
塞阀
汽提器
空气
放空
放空
WT5
计量泵PI8
PT3
液化气
TC40
烃油
TC2
TC4
TC7
TC10
TC16
TC15
TC14
TC21
TC38 TC39
Reaction Temperature : 560-600℃
Reaction Pressure : 0.1-0.2MPa
Catalyst Circulated Regeneration
Industrial Unit Results
Reaction Temp Conversion Rate % Selectivity % Yields %
570℃ 58 89 51.6
580℃ 63 86 54
Isobutane catalytic dehydrogenation
Propane catalytic dehydrogenation
Reaction Temp Conversion Rate % Propylene Selectivity% Propylene Yield %
590 ℃ 45 90 41
600 ℃ 48 86 41
• Property of Propane ,Isobutane, Butane Dehydrogenation Catalyst
Item Unit Typical PropertiesCr2O3 %wt 15-18AL2O3 %wt 80 min.Fe2O3 %wt 0.20max.Na2O %wt 0.10max.K2O %wt 1.0max.SnO %wt 2.0max.CuO %wt 1.0max.LOI %wt 5max.
Surface area m2/g >130PV ml/g >0.30
ABD ( average bulk density) g/ml 0.85—1.10Attrition index %wt 3 max(RIPP Method)
0 ~ 20μm %(v) 2.0 max.0 ~ 149μm %(v) 90.0 min.
Average particle size micro 60-75
Summary
Catalyst has gone through lab, pilot and industrial preparation ; Catalyst physical/chemical properties satisfy fluid bed operation
requirement ; Catalyst properties meet fluid bed design requirement ; Catalyst meets technical standard for industrial
application.