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Ⅲ.Hydrocracking
and hydrogenation upgrading technology
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DEVELOPMENT
OF NEW HYDROCRACKING PROCESSES
Zeng
Ronghui Hu Yongkang
Abstract
In
order to meet the demands brought by the increasing
capacity of hydrocracking units and refiner’s needs
for capacity expansion, high selectivity for middle
distillates and better product quality, FRIPP has
developed several new hydrocracking processes. This
article introduces the two-stage hydrocracking
technology (S-DHC), the single-stage with two (or
more) catalysts hydrocracking technology (S-SHC), the
combined technology of hydrocracking and VGO
desulfurazation, and the combined technology of
medium-pressure hydrocracking (hydroupgrading) and
additional hydrofining of middle distillates.
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DEVELOPMENT
AND COMMERCIALIZATION OF MEDIUM-PRESSURE HYDROCRACKING
(HYDROUPGRADING) TECHNOLOGY
Zeng
Ronghui
Abstract
This
paper introduces a series of medium-pressure
hydrocracking technologies developed by FRIPP,
including the mild hydrocracking (MHC), the
medium-pressure hydro-cracking (MPHC) and
hydroupgrading (MHUG).The goals, the characteristics,
adaptability and commercialization results of these
technologies are described.
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HYDROCRACKING
CATALYSTS FOR PRODUCING LIGHT FRACTIONS
Jiang
Guangan Bei Yaoming Lan Ling
Abstract
The
development and applications of several generations of
hydrocracking catalysts for mainly producing light
fractions, developed by FRIPP (Fushun Research
Institute of Petroleum and Petrochemicals) are
introduced in this paper. Catalyst 3825, the first
generation, has been successfully commercialized in
many domestic hydrocracking units since 1990,
exhibiting higher activity and good stability.
Catalyst 3905, the second generation, is characterized
by higher activity and selectivity for heavy naphtha,
good nitrogen tolerance, lower gas yield and higher C5+
yield, compared with 3825. And Catalyst 3905 can
experience a stable operation for refined oil with
nitrogen content of 15-20m
g/g. The test results in pilot-plant using 3955, the
third generation of catalysts, show that while keeping
similar properties and distribution of the product,
the reaction temperature is 7-9℃
lower, compared with that using Catalyst 3825.
Catalyst 3955 shows stable operation by using refined
oil with nitrogen content up to 20-30m g/g. Catalyst
FC-24, the fourth generation, newly developed by
FRIPP, has an increase in selectivity for heavy
naphtha by 2-3% and increase of liquid yield by 1-2%
with a decrease in hydrogen consumption while keeping
activity similar to that using 3955.
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DEVELOPMENT
AND APPLICATION OF FLEXIBLE
HYDROCRACKING
CATALYSTS
Wang
Fenglai Guan Minghua Hu Yongkang Zhao
Yan
Abstract
Flexible
hydrocracking catalysts have the characteristics to
change product distribution for flexibly producing
naphtha and middle distillates by adjusting the
operating conditions (temperature) appropriately for
refiners to produce various fuel products to meet the
needs of market. The development of flexible
hydrocracking catalysts has attracted more and more
attention and they may have wider application in the
future.
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HYDROCRACKING
CATALYST FOR MAXIMUM MIDDLE DISTILLATE PRODUCTION
Chen
Song Wang Jifeng Gu Mingdi Zhang Xiaoping
Abstract
In
order to meet the increasing demands for middle
distillates, FRIPP has developed a series of
hydrocracking catalysts with high mid-barrel
selectivity, from the initially developed catalyst,
3901, followed by the catalysts 3974, FC-20, FC-26 and
FC-40. Especially Catalyst 3974 has been extended to
the market as a catalyst with high mid-barrel
selectivity, and it has been successfully
commercialized in the hydrocracking units of Zhenhai
and Maoming Petrochemical Co. with the capacity of
1.2Mt/a and 0.8 Mt/a, respectively, which has created
great profits for the refiners.
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DEVELOPMENT
AND APPLICATION OF SINGLE-STAGE HYDROCKRACKING
CATALYSTS
Fan
Honfei Xu Xuejun Wang Fenglai Ton Guangming
Abstract
This
article introduces several single-stage hydrocracking
catalysts: Catalyst 3973 with high midbarrel
selectivity, Catalyst ZHC-01 with high activity,
Catalyst ZHC-02, an amorphous catalyst, Catalyst FC-28
with high activity and midbarrel selectivity, and
Catalyst FC-14 with the highest diesel selectivity.
Their characteristics and performance are also
discussed.
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STUDY
ON STEAM CRACKING PERFORMANCE OF HYDROCRACKED TAIL OIL
Yu
Dan Wu Yidong Zeng Ronghui Liao Shigang
Abstract
By
comparison of the results obtained from steam
cracking, the effect of feed quality, operating
conditions and process flow on steam cracking of
hydrocracker tail oil is discussed. The results show
that hydrocracker tail oil is a qualified source of
feed for producing ethylene.
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HYDROFINING-HYDRODEWAXING
TECHNOLOGY (HDW) FOR PRODUCING HIGH QUALITY DIESEL OIL
WITH LOW SPLIDIFICATION POINT
Meng
Xianglan Liu Lizhi Yin Enjie
Abstract
This
paper introduces the hydrofining-hydrodewaxing (HDW)
technology developed by FRIPP suitable for producing
high quality diesel oil with low solidification point
from inferior feeds. The process combines the features
of hydrotreating and hydrodewaxing, and is
characterized by high hydrofining and dewaxing
activity, flexible feedstocks and target product,
simple process, as well as high yields of diesel oil.
It has been successfully used in Harbin Refinery.
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MCI
TECHNIQUE FOR IMPROVING DIESEL CETANE NUMBER
Fang
Xiangchen Zhao Yuzhuo Lan Ling Yin Enjie
Abstract
This
paper introduces the development and commercial
application of MCI technique for greatly improving
cetane number of diesels under medium pressure, as
well as the study on producing diesel oils with
low-sulfur and low-aromatic content by using MCI
process. The commercial results obtained from
different scale units with MCI technique show that the
improvement of diesel cetane number is over 10 units,
diesel yield is more than 95% and the sulfur content
of product is below 50μg/g,
being a good repetition of the laboratory teats. MCI
technique has also been used to reduce aromatics
content to 25% to produce clean diesel oil.
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COMBINATION
OF HYDROFINING AND HYDROUPGRADING PROCESSES FOR
PRODUCING CLEAN DIESEL-FUELS
Liao
Shhigang Zhang Ying
Abstract
This
article introduces some combinations of proprietary
technologies developed by FRIPP and commercialized.
With the combination, demands for the quality of
diesel-fuels, such as S content, Cetane Number,
aromatics content and flow ability at low temperatures
can be met.
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HYDROISODEWAXING
TECHNOLOGY OF LUBE OIL
Liu
Ping Yang Jun
Abstract
The
results of preparing VHVI and HVI lubricant bases from
hydrocracker tail oil and solvent
refining-hydrotreated VGO, using catalyst (FIDW) and
its related technology of hydroisodewaxing and
isodewaxing, are introduced in this paper. Compared
with the technology of solvent dewaxing and catalytic
dewaxing, the technology of isodewaxing is
characterized by higher yield, higher viscosity index
and lower pour point for the prepared lubricant bases.
The test results for preparing food-grade white oil
from hydrocracker tail oil using isodewaxing process
and the results of 2000-hour stability test using
FIDW-1 isodewaxing catalyst are also introduced.
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APPLICATION
OF HYDROPROCESS SIMULATION SOFTWARE IN CONSTRUCTION
AND EXPANSION OF COMMERCIAL UNIT
Zhao
Wei Liao Na Xin Ruokai Yin Enjie
Abstract
Recent
application of the hydroprocess simulation software
developed by FRIPP in the commercial units are
introduced. This software offered the technical
support for the capacity expansion and transforming of
the combined hydrofining units in Zhenhai Petroleum
Refingning and Petrochemcial Comapy, as well as the
basic data for the design of hydrocracking unit in
Qilu Petrochemical Company.
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