中国化学工程学报

唐晓津, 骆广生, 李洪波, 汪家鼎

. 2004, 12(1): 1-6. doi:

摘要 ( )

PDF (1576KB) ( )

参考文献 | 相关文章 | 多维度评价

A study on two-phase flow characteristics in a coalescence-dispersion pulsed-sieve-plate
extraction column of 150mm in diameter was carried out with a working system of 30% tri-
butyl-phosphate (TBP) (in kerosene)nitric acid-water. The influence of operation conditions
on the holdup of the dispersed phase was investigated.According to the analysis of the
experimental data, there was a turning point on the curve of ln(Vs) versus ln(1-φ)under
certain pulse intensity. When the holdup is higher than the value at the turning point, the
two-phase flow characteristics can be described with the modified Pratt’s equation,
otherwise a new relation in the form of φ =1/2.75uk (uc + 4ud) may be used, which is
proposed by this study.

板翘式换热器物流分配特性的实验研究

张哲, 厉彦忠, 许箐

. 2004, 12(1): 7-13. doi:

摘要 ( )

PDF (1988KB) ( )

参考文献 | 相关文章 | 多维度评价

The flow maldistribution and the effect of different inlet configuration on the flow
distribution in platefin heat exchangers were studied experimentally. It is found that the
flow maldistribution is serious because of the defects of inlet configurations, while the
inlet configuration and Reynolds number are the main factors affecting the flow
distribution. The improved inlet configurations, which are the header with a two-stage
distributing configuration and the guide vane with a fluid complementary cavity were
proposed and tested in this paper. The experimental results show that the improved inlet
configurations can effectively improve the performance of flow distribution in heat
exchangers.

采用不同流场的质子交换膜燃料电池内部传递现象模拟

胡鸣若, 朱新坚, 顾安忠

. 2004, 12(1): 14-26. doi:

摘要 ( )

PDF (4027KB) ( )

参考文献 | 相关文章 | 多维度评价

A numerical model for proton exchange membrane (PEM) fuel cell is developed, which can
simulate such basic transport phenomena as gas-liquid two-phase flow in a working fuel
cell. Boundary conditions for both the conventional and the interdigitated modes of flow
are presented on a three-dimensional basis. Numerical techniques for this model are
discussed in detail. Validation shows good agreement between simulating results and
experimental data. Furthermore, internal transport phenomena are discussed and compared for
PEM fuel cells with conventional and interdigitated flows. It is found that the dead-ended
structure of an interdigitated flow does increase the oxygen mass fraction and decrease the
liquid water saturation in the gas diffusion layer as compared to the conventional mode of
flow. However, the cathode humidification is important for an interdigitated flow to
acquire better performance than a conventional flow fuel cell.

CFB中环核结构的模拟

欧阳洁, 李静海, 孙国刚

. 2004, 12(1): 27-32. doi:

摘要 ( )

PDF (2128KB) ( )

参考文献 | 相关文章 | 多维度评价

In this paper, the stochastic particle-trajectory model is proposed for simulating the
dynamic behavior of circulating fluidized bed (CFB). In our model, the motion of solid
phase is obtained by calculating the individual particle trajectory while gas flow is
obtained by solving the Navier-Stokes Equation including two-phase interaction.For the
calculation of solid phase, the motion of each particle is decomposed into a collision
process and a suspension process. In suspension process, the less important and/or unclear
forces are described as a random force considering gravity, drag force and pressure
gradient. As a result, the proposed model gives some numerical simulations of CFB.It
indicates that the stochastic particle-trajectory model can be used to simulate
qualitatively the annulus-core structure of CFB and the influences of stochastic factors
cannot be ignored. In a CFB, the coupling of stochastic factors between two phases makes
the radial voidage decreased. Moreover, the upward motion of particles is mitigated by both
stochastic factors and turbulence between two phases.

恒压过滤介质阻力分析

吴燕翔, 王碧玉

. 2004, 12(1): 33-36. doi:

摘要 ( )

PDF (1092KB) ( )

参考文献 | 相关文章 | 多维度评价

A mathematical model for constant pressure filtration is established. The distribution of
hydraulic pressure within the cake and the medium resistance are measured. The medium
resistance Rm is calculated from the suppositional filtration time θm. It is demonstrated
that Rm is nearly a constant for a given filter cloth.

膨润土增强的黄土和红土的性质

刘阳生, 白庆中, 聂永丰

. 2004, 12(1): 37-41. doi:

摘要 ( )

PDF (1719KB) ( )

参考文献 | 相关文章 | 多维度评价

Loess and laterite distributed widely in the northern and southern China cannot be directly
used as the natural barrier to isolate the solid waste because of their high hydraulic
conductivity. In this paper, they are enhanced by bentonite to improve their hydraulic
performance. The impact of bentonite content and water content on compressive strength of
the compacted soil was investigated. The effects of bentonite content, water content,dry
density and hydraulic graiient on the hydraulic conductivity were studied in detail. For
the laterite and the laterite with 8% of bentonite, the experimental results of hydraulic
conductivity can be applied in the engineering design. However, for the loess and the
bentonite enhanced loess, those of hydraulic conductivity can not be directly applied in
the engineering design because their hydraulic performance does not comply with the Darcy’s
law. These experimental results have to be carefully modified before application.

PCC升降式反应器的两种新式进料结构

范怡平, 蔡飞鹏, 时铭显, 徐春明

. 2004, 12(1): 42-48. doi:

摘要 ( )

PDF (2266KB) ( )

参考文献 | 相关文章 | 多维度评价

Based on the analysis of flow characteristics of the FCC riser feedstock injection zone,
two novel feedstock injection structures are put forward. By investigating three flow
parameters in the feedstock injection zone under the three different structures (the
traditional and the novel No. 1, No. 2 structures): the local density, the particle
backmixng ratio, and the jet eigen-concentration, the flow feature under three structures
were obtained. The experimental results demonstrate that the flow features under both
proposed structures are obviously improved comparing with those under the traditional
structure. Especially, the performance of the deflector-structured No. 2is more desirable
than that of No. 1.

基于一种改进的自适应遗传算法估算环已烷自催化氧化反应动力学参数

刘平乐, 邹丽珊, 罗和安, 王良芥, 郑金华

. 2004, 12(1): 49-54. doi:

摘要 ( )

PDF (1637KB) ( )

参考文献 | 相关文章 | 多维度评价

A modified genetic algorithm of multiple selection strategies, crossover strategies and
adaptive operator is constructed, and it is used to estimate the kinetic parameters in
autocatalytic oxidation of cyclohexane. The influences of selection strategy, crossover
strategy and mutation strategy on algorithm performance are discussed.This algorithm with a
specially designed adaptive operator avoids the problem of local optimum usually associated
with using standard genetic algorithm and simplex method. The kinetic parameters obtained
from the modified genetic algorithm are credible and the calculation results using these
parameters agree well with experimental data.Furthermore, a new kinetic model of
cyclohexane autocatalytic oxidation is established and the kinetic parameters are estimated
by using the modified genetic algorithm.

气升式气-固环流汽提器的流体力学行为

刘梦溪, 卢春喜, 时铭显

. 2004, 12(1): 55-59. doi:

摘要 ( )

PDF (1334KB) ( )

参考文献 | 相关文章 | 多维度评价

In this paper, the principles of airlift loop reactor in gas-liquid and gas-liquid-solid
systems are extended to gas-solid system. The models on bed average voidage in draft tube
and the particle circulation velocity in a gas-solid loop reactor are deduced. The
experiments are also conducted on a φ600mm×7000mm reactor. The catalyst voidage and
catalyst circulation velocity are measured at different radial and axial positions in draft
tube and annulus, respectively. The experimental data are analyzed systemically and
represented satisfactorily by the proposed models.

一类非线性时滞过程的主动容错控制

王东, 周东华, 金以慧

. 2004, 12(1): 60-65. doi:

摘要 ( )

PDF (1702KB) ( )

参考文献 | 相关文章 | 多维度评价

Based on a nonlinear state predictor (NSP) and a strong tracking filter (STF), a sensor
fault tolerant generic model control (FTGMC) approach for a class of nonlinear time-delay
processes is proposed. First, the NSP is introduced, and it is used to extend the
conventional generic model control (GMC) to nonlinear processes with large input time-
delay. Then the STF is adopted to estimate process states and sensor bias, the estimated
sensor bias is used to drive a fault detection logic. When a sensor fault is detected, the
estimated process states by the STF will be used to construct the process output to form a
"soft sensor", which is then used by the NSP (instead of the real outputs) to provide state
predictors. These procedures constitute an active fault tolerant control scheme. Finally,
simulation results of a three-tank-system demonstrate the effectiveness of the proposed
approach.

用伪并行遗传/模拟退火算法进行多流股换热器网络综合的研究

魏关锋, 姚平经, X.Luo, W.Roetzel

. 2004, 12(1): 66-77. doi:

摘要 ( )

PDF (3522KB) ( )

参考文献 | 相关文章 | 多维度评价

The multi-stream heat exchanger network synthesis (HENS) problem can be formulated as a
mixed integer nonlinear programming model according to Yee et al. Its nonconvexity nature
leads to existence of more than one optimum and computational difficulty for traditional
algorithms to find the global optimum. Compared with deterministic algorithms, evolutionary
computation provides a promising approach to tackle this problem. In this paper, a
mathematical model of multi-stream heat exchangers network synthesis problem is setup.
Different from the assumption of isothermal mixing of stream splits and thus linearity
constraints of Yee et al., non-isothermal mixing is supported. As a consequence, nonlinear
constraints are resulted and nonconvexity of the objective function is added.To solve the
mathematical model, an algorithm named GA/SA (parallel genetic/simulated annealing
algorithm) is detailed for application to the multi-stream heat exchanger network synthesis
problem. The performance of the proposed approach is demonstrated with three examples and
the obtained solutions indicate the presented approach is effective for multi-stream HENS.

多产品间歇过程的分层次在线调度——一种数学规划与遗传算法的混合算法

陈理, 王克峰, 徐霄羽, 姚平经

. 2004, 12(1): 78-84. doi:

摘要 ( )

PDF (2072KB) ( )

参考文献 | 相关文章 | 多维度评价

In this contribution we present an online scheduling algorithm for a real world
multiproduct batch plant.The overall mixed integer nonlinear programming (MINLP) problem is
hierarchically structured into a mixed integer linear programming (MILP) problem first and
then a reduced dimensional MINLP problem, which are optimized by mathematical programming
(MP) and genetic algorithm (GA) respectively. The basis idea relies on combining MP with GA
to exploit their complementary capacity. The key features of the hierarchical model are
explained and illustrated with some real world cases from the multiproduct batch plants.

预测纯流体表面张力的一个新模型

杨春生, 仲崇立

. 2004, 12(1): 85-91. doi:

摘要 ( )

PDF (2095KB) ( )

参考文献 | 相关文章 | 多维度评价

A new model based on the theoretical work of Boudh-Hir and Mansoori was developed for
prediction of surface tension of pure fluids. The new model has the advantage of not
requiring densities in the calculation, and the input parameters are critical temperature
and connectivity indices. A total of 209 compounds covering a wide variety of substances
were used to develop the model, and the overall correlative AAD is 4.21%. To test its
predictive ability, the model is further used to predict the surface tension of 25 more
compounds that were not included in the model development. The overall predictive AAD is
4.07%, which illustrates that the model is reliable. The model proposed is simple and easy
to apply, with good predictive accuracy.

α-蒎烯+顺式蒎烷+正已醇体系的等温等压汽液平衡

马璐, 李浩然, 王从敏, 韩世钧

. 2004, 12(1): 92-95. doi:

摘要 ( )

PDF (1243KB) ( )

参考文献 | 相关文章 | 多维度评价

This paper presents the isothermal and isobaric vapor-liquid equilibria measured with an
inclined ebulliometer for α-pinene + cis-pinane + 1-hexanol system at temperatures of
368.15K, 383.15 K and 408.15K, and at pressures of 26.66 kPa and 53.33 kPa. The measured
ternary results are analyzed using the UNIQUAC equation with the temperature-dependent
binary parameters. Satisfactory agreements are obtained between the experimental results
and the theoretical analysis.

自适应MPCA方法在链霉素过程监控中的应用

何宁, 王树青, 谢磊

. 2004, 12(1): 96-101. doi:

摘要 ( )

PDF (1846KB) ( )

参考文献 | 相关文章 | 多维度评价

Multi-way principal component analysis (MPCA) had been successfully applied to monitoring
the batch and semi-batch process in most chemical industry. An improved MPCA approach,
step-by-step adaptive MPCA (SAMPCA), using the process variable trajectories to monitoring
the batch process is presented in this paper. It does not need to estimate or fill in the
unknown part of the process variable trajectory deviation from the current time until the
end. The approach is based on a MPCA method that processes the data in a sequential and
adaptive manner. The adaptive rate is easily controlled through a forgetting factor that
controls the weight of past data in a summation. This algorithm is used to evaluate the
industrial streptomycin fermentation process data and is compared with the traditional
MPCA. The results show that the method is more advantageous than MPCA,especially when
monitoring multi-stage batch process where the latent vector structure can change at
several points during the batch.

低高径比外循环气升式生物反应器带渣发酵生产有效霉素

郑裕国, 陈小龙, 汪钊, 沈寅初

. 2004, 12(1): 102-107. doi:

摘要 ( )

PDF (2205KB) ( )

参考文献 | 相关文章 | 多维度评价

Fermentation experiments to produce validamycins from crude substrates by Streptomyces
hygroscopicus were carried out in an external-loop airlift bioreactor (0.0115 m3 ) with a
low ratio of height to diameter of the riser of 2.9 and a ratio of riser to downcomer
diameter of 6.6. The influences of gas flow rate and liquid volume on fermentation of
validamycins were investigated. Comparisons of validamycin fermentation were made among the
external-loop airlift bioreactor, a mechanically stirred tank bioreactor (0.010m3 ) and
shaking flasks. Under the same operation conditions including fermentation medium
composition, inoculum ratio and culture temperature,the fermentation time in the external-
loop airlift bioreactor (45 h) was shorter than that in the shaking flasks (100 h)and the
same as that in the mechanically stirred tank bioreactor. After a total fermentation time
of 45 h under optimized operation conditions, average validamycin concentration obtained in
the external-loop airlift bioreactor was close to 19630μg.m1-1 validamycin concentration
in the mechanically stirred tank bioreactor. It was demonstrated that the external-loop
airlift bioreactor could substitute for the mechanically stirred tank bioreactor in
production of validamycins from crude substrates with dregs by Streptomyces hygroscopicus.

高浓度淀粉废水水解——好氧循环一体化处理工艺的初步研究

李清彪, 廖鑫凯, 吴志旺, 邓旭, 黄益丽, 卢英华, 孙道华, 洪铭嫒, 王琳

. 2004, 12(1): 108-112. doi:

摘要 ( )

PDF (1713KB) ( )

参考文献 | 相关文章 | 多维度评价

A new recycling hydrolytic-aerobic combined process was developed to treat the high
concentration used. At first, the hydrolytic degradation and aerobic degradation process
were examined in two batch reactors,respectively. In the stand-alone hydrolytic process,
starch in the wastewater almost disappeared after 11 h treatment,but CODCr remained as high
as 5803mg. L-1 after two days. In the aerobic process, the biodegradation rate of starch
was much slower during the first 11 h than that in the hydrolytic process, although the
CODCr removal efficiency reached 89.6% and more than 90% starch could be degraded after
37.5 h. To determine the interaction effects of the two processes, a series of hydrolytic-
aerobic combinations were examined in details. Hydrolytic process played an important role
in the whole recycle combination process as it could improve the biodegradability of the
high concentration starch wastewater. However, from the other experiments, the negative
effect of hydrolytic acidification was found in the hydrolytic-aerobic combination, which
suggested that the aerobic microorganisms needed time to adapt themselves to the acidic
environment. The effect of the degrading time, which was spent in the hydrolytic and
aerobic unit, and the number of circulations, with which the wastewater went through the
two units were investigated. It was found that a recycle combination of 6 h hydrolytic
process with 12 h aerobic process was highly effective and potentially economical, in which
the final removal efficiency of CODCr and efficiency of starch degradation reached 94.1%
and 98.8%, respectively.

自养型生物过滤器硝化氧化一氧化氮

陈建孟, 陈浚, L.Hershman, 王家德, D.P.Y.Chang

. 2004, 12(1): 113-117. doi:

摘要 ( )

PDF (1668KB) ( )

参考文献 | 相关文章 | 多维度评价

Carbon foam-a kind of new engineering material as packing material was adopted in three
biofilters with different pore dimensions and adapted autotrophic nitrite nitrobacteria to
investigate the purification of nitric oxide (NO) in a gas stream. The biofilm was
developed on the surface of carbon foams using nitrite as its only nitric source. The
moisture in the filter was maintained by ultrasonic aerosol equipment which can minimize
the thickness of the liquid film. The liquid phase nitrification test was conducted to
determine the variability and the potential of performance among the three carbon foam
biofilters. The investigation showed that during the NO-2-N inlet concentration of 200 g-L
-1 .min-1 to 800 g-L-1 .min-1, the 24PPC (pores per centimeter) carbon foam biofilter had
the greatest potential, achieving the NO-2-N removal efficiency of 94% to 98%. The 8PPC and
18PPC carbon foam biofilters achieved the NO-2-N removal efficiency of 15% to 21% and of
30% to 40%, respectively. The potential for this system to remove NO from a gas stream was
shown on the basis of a steady removal efficiency of 41% to 50% which was attained for the
24PPC carbon foam biofilter at specified NO inlet concentration of 66.97mg.m-3to 267.86
mg.m-3 and an empty-bed residence time of 3.5 min.

基于过氧化氢制备生产二氧化氯的过程开发研究

陈赟, 江燕斌, 钱宇

. 2004, 12(1): 118-123. doi:

摘要 ( )

PDF (1987KB) ( )

参考文献 | 相关文章 | 多维度评价

This paper presents a process development and design of chlorine dioxide production based
on hydrogen peroxide. The process is characterized by cleaner production, high efficiency,
and waste minimization. Optimization of process conditions, selection of equipment, and
experiment of recycle of waste acid are carried out. The process design is realized in
consideration of several aspects such as operation, material, equipment design and safety.
An industrialized process flowsheet is developed according to experiment. A pilot testing
is carried out to confirm the lab results. Process design of chlorine dioxide production
based on hydrogen peroxide is realized.

采用不同锰源合成尖晶石LiMn₂O₄正极材料

唐致远, 冯季军, 彭亚宁

. 2004, 12(1): 124-127. doi:

摘要 ( )

PDF (1312KB) ( )

参考文献 | 相关文章 | 多维度评价

The spinel LiMn2O4 cathode material was synthesized with the solid-state reaction method.
Four manganese compounds including electrolytic manganese dioxide (EMD), MnCO3, Mn3O4 and
nano-EMD were used as Mn sources while LiOH.H2O was used as the uniform Li source. The
crystal structure characteristics of these samples produced were investigated by means of
XRD, SEM, particle size distribution analysis and specific surface area testing. Their
electrochemical properties were also studied by comparing their specific capacity, charge
and discharge efficiency and cycle performance.

统计速率理论研究乙醇-水溶液中硫酸钾晶体的溶解动力学

刘畅, 冯新, 吉晓燕, 陈栋梁, 魏涛, 陆小华

. 2004, 12(1): 128-130. doi:

摘要 ( )

PDF (1104KB) ( )

参考文献 | 相关文章 | 多维度评价

Dissolution kinetics of K2SO4 crystal in aqueous ethanol solutions was studied on-line with
ion selective electrode. The concentration of K2SO4 was calculated from the determined
electromotive force in which the activity coefficient of components in the liquid phase was
calculated with the Pitzer equation. Dissolution kinetic parameters in the modified
statistical rate theory were regressed. The correlation results show that dissolution rate
of K2SO4 is slower in aqueous ethanol solutions than that in aqueous solutions. The two
most important reasons are as follows:(1) The solubility of K2SO4 in aqueous ethanol
solutions is lower than that in aqueous solutions, which causes a decrease of the driving
force of mass transfer. (2) The process of surface reaction of K2SO4 became slower due to
the addition of ethanol, so that the whole process is mainly dominated by the surface
reaction instead of mass transfer.

电场增强等离子体作用下甲烷转化动力学研究

王保伟, 许根慧, 孙洪伟

. 2004, 12(1): 131-133. doi:

摘要 ( )

PDF (897KB) ( )

参考文献 | 相关文章 | 多维度评价

Methane conversion was studied with electric field enhanced plasma (EFEP) technique at the
atmosphere pressure and low temperature ranging from 323 K to 373 K. The conversion of
methane is up to 60%-80%.The kinetics of methane conversion was studied using microreactor.
The reaction model of power function type was obtained as: r = 90.99exp (-26980/RT)C0.226A
(mol.m-3.s-1). The global kinetics parameters were calculated by the variable simple-pure
shape method. The calculating results are in good agreement with experimental data.

高浓度H₂O-NH₃-CO₂体系汽液平衡计算

魏顺安, 张红晶

. 2004, 12(1): 134-136. doi:

摘要 ( )

PDF (754KB) ( )

参考文献 | 相关文章 | 多维度评价

A vapor liquid equilibrium model and its related interactive energy parameters based on
UNIQUAC model for the H2O-NH3-CO2 system without solid phase at the conditions of
temperature from 30℃ to 90℃,pressure from 0.1 MPa to 0.4 MPa, and the maximum NH3 mass
fraction up to 0.4 are provided. This model agrees with experimental data well (average
relative error ＜ 1%) and is useful for analysis of industrial urea production.

三烷基胺萃取氨基磺酸及其废水的特性研究

秦炜, 李振宇, 汪敏, 戴猷元

. 2004, 12(1): 137-142. doi:

摘要 ( )

PDF (1727KB) ( )

参考文献 | 相关文章 | 多维度评价

p-Amino benzene sulfonic acid (PABSA) is selected as the solute with amphoteric functional
group,Lewis acid and Lewis base, to be separated from its dilute solutions. An aliphatic,
straight chain amine, Alamine 336, is used as the extractant, and kerosene, 1-octanol,
chloroform, butyl acetate and benzene as the diluent. The effects of pH value of solution,
extractant concentration, salt and types of diluent on the distribution coefficient, D,are
studied. There is a peak of D value with pH value of solution, the polar diluents are
favorable for extracting PABSA, and the salt in aqueous phase reduces values of D
apparently. The extraction equilibrium is described using the mass action law, and the
calculated data according to the proposed model agree with the experimental data well.
Further, the extraction behavior for other amino benzene sulfonic acids, 1-amino-8-naphtol
-3,6-disulfonic acid (H acid) and 4,4′-diaminostilbene-2,2′Cdisulfonic acid (DSD acid),
is investigated in a wide pH value region.Finally, H acid and DSD acid are successfully
removed from wastewater by the extraction with Alamine 336.

稀释剂对三烷基氧膦萃取草酸的影响

李玉鑫, 王运东, 戴猷元

. 2004, 12(1): 137-148. doi:

摘要 ( )

PDF (1727KB) ( )

参考文献 | 相关文章 | 多维度评价

In liquid-liquid solvent extraction processes, diluents have a strong influence on the
extraction mechanism and efficiency. In this study, benzene, cyclohexane, trichloromethane,
carbon tetrachloride, methyl isobutyl ketone (MIBK), butyl acetate, and 1-octanol were used
as diluents in the extraction of oxalic acid by trialkylphosphine oxide (TRPO). The effects
of extractant concentration, initial concentration of oxalic acid and diluent type on the
extraction equilibrium partition coefficient are analyzed. The sequence of the extraction
ability by different diluents is MIBK ＞ butyl acetate ＞ cyclohexane=benzene ＞ carbon
tetrachloride ＞ 1-octanol ＞ trichloromethane.Extraction mechanism was analyzed and
extraction model parameters were evaluated.

光谱学法研究直流放电等离子体条件下甲烷的分解和碳二烃的形成

贺建勋, 韩嫒嫒, 高爱华, 周引穗, 陆治国

. 2004, 12(1): 149-151. doi:

摘要 ( )

PDF (1074KB) ( )

参考文献 | 相关文章 | 多维度评价

The IR emission spectra of methane were measured under DC glow discharge conditions. The
distinct difference in time between methane decomposition and C2 hydrocarbons formation was
specially pointed out. C2hydrocarbons formed at the end of methane decomposition. The
optimum condition for C2 hydrocarbon formation was studied and the optimum combination
between electric current density and methane input quantity was suggested. The appropriate
reaction conditions for methane decomposition and C2 hydrocarbons formation are different,
so high yield of C2 hydrocarbons will be probably obtained when different conditions are
taken.

大庆常压催化裂解动力学研究

孟祥海, 徐春明, 张倩, 高金森

. 2004, 12(1): 152-155. doi:

摘要 ( )

PDF (1385KB) ( )

参考文献 | 相关文章 | 多维度评价

Catalytic pyrolysis of Daqing atmospheric residue on catalyst CEP-1 was investigated in a
confined fluidized bed reactor. The results show that reaction temperature, the mass ratios
of catalyst to oil and steam to oil have significant effects on product distribution and
yields of light olefins. The yields of light olefins show the maxima with the increase of
reaction temperature, the mass ratios of catalyst to oil and steam to oil, respectively.The
optimized operating conditions were determined in the laboratory, and under that condition
the yields of ethylene, propylene and total light olefins by mass were 15.9%, 20.7% and
44.3% respectively. The analysis of pyrolysis gas and pyrolysis liquid indicates that CEP-1
has good capacity of converting heavy oils into light olefins,and there is a large amount
of aromatics in pyrolysis liquid.

八甲基环四硅氧烷本体聚合动力学研究

方欣, 陈志荣, 尹红, 苏科峰

. 2004, 12(1): 156-158. doi:

摘要 ( )

PDF (737KB) ( )

参考文献 | 相关文章 | 多维度评价

The kinetics of bulk polymerization of octamethylcyclotetrasiloxane under acid circumstance
is studied.A kinetic model is put forward and kinetic parameters are obtained through
optimization.