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PROCESS
FOR SELECTIVE HDS/HDO OF FCC GASOLINE（OCT-M）
Zhao
Leping Zhou Yong Duan Weiyu Pang Hong
Absrtact
This
paper briefly introduces the distribution of sulfur
and olefin in FCC gasoline of national refineries, and
the OCT-M process, developed by FRIPP, for
selective hydro-desulfurization and
hydro-deolefination (HDS/HDO) of FCC gasoline. A
significant reduction in sulfur content of the
products was obtained when FCC gasoline was
hydrotreated by OCT-M process under the conditions of
pressure 1.6 MPa～3.0MPa,
reaction temperature 260℃～280℃,
LHSV 3.0-1~6.0h-1 and volume
ratio of hydrogen to oil 300:1~500:1. When the removal
ratio of sulfur by hydrotreating reached 85%~90% and
olefin content was reduced by 8.0~13.0 %, The RON loss
and (R+M)/2 loss were not more than 2.0 units and 1.5
units, respectively; and the gasoline yield was over
98.0%.
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PROCESS
WITH NON-NOBLE METAL CATALYST FOR PRODUCION OF
LOW-SULFUR AND LOW-AROMATICS DIESEL
Liu
Jihua Huan Weifang Tong Dequn
Abstract
Based
on the thorough investigation of the reaction
mechanism and the related technologies in foreign
countries, the effects of operating conditions and
existence of S- and N-heteroatoms on desulfurization
and dearomatization of diesels were investigated using
various feeds. A new technology called Technology for
Deep Removing of Sulfur and Aromatics from Diesels was
developed to produce low-sulfur, low-aromatics diesels
from poor quality diesels. Depending on feedstock
properties, this technology under appropriate
operating conditions is used to produce diesel or
diesel blending components, conforming to the second
classification specification of World Fuel Charter.
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TECHNOLOGY
FOR HYDRODEAROMATIZATION OF DIESELS
Liu
Quanjie Yang Jun Xu Huiqing Zhou Yong Han Chongren
Abstract
This article introduces a noble metal catalyst used
for hydrodearomatization of diesels. Using this
catalyst to treat the hydrotreated ZhongYuan LCO with
sulfur content less than 150μg.g-1
under medium pressure, the dearomatization efficiency
reaches 68%. The product quality meets the second or
the third classification diesel specification of World
Fuel Charter, while the diesel yield is over 95%. The
results show that this catalyst has wide adaptability
to various feedstocks, higher tolerance to sulfur and
nitrogen and has good stability.
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commercial
APPLICATION of FOR HYDROFINING Coker distillateS
Li
Yang Liu Jihua Wang Zhen
Abstract
Catalyst FH-5 experienced a six-year stable operation
with qualified products from setting the best
operation record at home country. Meanwhile, the
processing capacity of feedstock per-kilogram of FH-5
catalyst is 5 tons more than that of the leading
catalysts in foreign counties. The start-up and
operation of FH-5 is summarized in this article.
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DEVELOPMENT
AND APPLICATION OF HEAVY OIL HYDRO-PRETREATING
CATALYSTS
Wang
Jifeng Liang Xiangcheng Yu Zhengnan
Peng Shaozhong ZhouYong Zhao Yan
Abstract
FRIPP has developed a series of hydrotreatment
catalysts, including 3926, CH-20, 3936, 3996 and FF-16
catalysts, the first four of which have been applied
in many commercial units. FF-16, recently developed,
is to be applied in two domestic commercial units
soon. This paper introduces the development and
application of the pretreatment catalysts for
hydrocracking.
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PRE-HYDROTREATING
TECHNOLOGY FOR PRODUCING HIGH QUALITY FCC FEED FROM
POOR QUALITY VGO
Wu
Yidong Qi Xingwei Fang Xiangchen
Abstract
High
quality FCC feed can be produced by VGO
pre-hydrotreating, a partial conversion technology （FHT－PC）through
the selection of a proper catalyst or combined
catalysts, and processing conditions. Meanwhile, some
gasoline and diesel or their blended products with
good quality can be obtained. This is a good way for
refiners to enhance the diesel-to-gasoline ratio.
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STUDY
OF THE CATALYST FOR HYDROTREATING COKER GAS OIL
Cao
Guangwei Zhao Yan Wei Dengling Tong Minghai Wang
Xuquan
Abstract
Development of a Ni-Mo catalyst for hydrotreating poor
coker gas oil is described in this article. LTOC
(low-temperature oxygen adsorption), TPR, XRD and TEM
measurements were used to characterize the catalyst.
The activity and stability of the catalyst were also
tested with satisfactory results. The catalyst has
been put into use in the hydrotreating unit of
Changling Refinery with remarkable benefit.
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EFFECT
OF FEED OILS AND OPERATING CONDITIONS ON COKE
DEPOSITION OVER HYDROCRACKING CATALYSTS
Sun
Wanfu Zhang Xiwen
Abstract
The
coke deposition behavior of hydrocracking catalysts
during reacting, with various types of hydrocarbons,
and various S and N contents, was studied by using the
accelerated aging technique in a micro-reactor under
different pressures. The properties of coke-deposited
catalyst were determined using FT-IR and XPS. The
results showed: for alkanes, the amount of coke
deposition on catalysts increased with the increase of
carbon-chain length; for alkenes, it decreased a
little with the increase of carbon-chain length; for
alkanes and alkenes with the same length of
carbon-chains, it increased as saturation degree of
alkenes decreased; for aromatic hydrocarbons with
single-ring, the properties of substituted-groups, the
length, number and unsaturation degree of
carbon-chains, could affect the amount of coke
deposition. The longer the carbon-chains, the larger
the amount of coke deposition, and lower saturation
degree could result in more coke deposition on
catalyst. For aromatic hydrocarbons with different
numbers of rings and without any substituted-group,
the amount of coke deposition increased with the
increase of the ring number. It was also found that
higher content of thiophene and pyridine, and lower
reaction pressure could accelerate the coke
deposition, however lower content of thiophene may
inhibit the coke deposition.
