residue fluid catalytic cracking
advances in fluid catalytic cracking
... L Occelli 129 Advances in Fluid Catalytic Cracking: Testing, Characterization, and Environmental Regulations, edited by Mario L Occelli Advances in Fluid Catalytic Cracking Testing, Characterization, ... for Fluid Catalytic Cracking Unit Petroleum Science and Technology 26 (2008): 43645 11 Corma, A., and Sauvanaud, L Increasing LCO Yield and Quality in the FCC: Cracking Pathways Analysis In Fluid ... addition of the Advances in Fluid Catalytic Cracking Products Crude F C C F C C Recycle stream Products Recycle stream F C C Figure 1.4õ Schematic diagram of the cracking path of a feed element...
Ngày tải lên: 02/04/2014, 16:01
fluid catalytic cracking handbook - 2nd ed
... Fluid Catalytic Cracking Handbook SECOND EDITION This page intentionally left blank Fluid Catalytic Cracking Handbook HandbookDesign,Operation and ... Utilities/Offsites, 305 Summary, 306 276 Emerging Trends in Fluidized Catalytic Cracking _ 307 Reformulated Fuels, 308 Residual Fluidized Catalytic Cracking (RFCC), 323 Reducing FCC Emissions, 327 Emerging ... Data ghbeigi, Reza Fluid catalytic cracking handbook / Reza Sadeghbeigi.—2nd ed p cm Includes bibliographical references and index ISBN 0-88415-289-8 (alk paper) Catalytic cracking Title P690.4.S23...
Ngày tải lên: 02/04/2014, 16:04
RESIDUE FLUIDISED CATALYTIC CRACKER DUTY SPECIFICATION
... Unit Processing Objectives The objective of the Residue Fluidised Catalytic Cracker (RFCC) is to process hydrotreated atmospheric residue from the Residue Hydro-desulphuriser Unit (RHDS) to produce ... catalyst Shortening of catalytic cracking time Prevention of back mixing in riser Increased catalyst circulation Decreasing of system pressure DSN: 178 A RESIDUE FLUIDISED CATALYTIC CRACKER DUTY ... Gasoline Heavy FCC Gasoline Desulph Residue LPG Alkylation RFCC Light Gasoline Treater Gasoline Pool Amine Regeneration unit Light Cycle Oil Residue Fluidized Catalytic Cracker Reactor Polypropylene...
Ngày tải lên: 10/08/2015, 02:25
bài giảng công nghệ chế biến dầu mỏ chương 5 cracking xúc tác FCC (catalytic cracking)
... Công nghệ cracking xúc tác • Cracking xúc tác lớp cố định • Cracking xúc tác lớp sôi 6.1 Cracking xúc tác lớp cố định • Hiệu suất chuyển hóa thấp • Ngưng tụ cốc • Quá nhiệt cục 6.2 Cracking xúc ... trình cracking XT 4.1 Phản ứng mong muốn Phản ứng isomer hoá: Thường xảy trước phản ứng cracking 4 Hóa học trình cracking XT 4.2 Phản ứng không mong muốn Phản ứng chuyển vị hydro: Hóa học trình cracking ... trung hòa chúng cấu tử sản phẩm cracking xúc tác 4 Hóa học trình cracking XT 4.1 Phản ứng mong muốn Phản ứng cắt mạch (cracking ): xảy theo chế ion cacbonium Hoạt tính cracking hydrocacbon giảm dần...
Ngày tải lên: 10/08/2015, 05:14
Chapter 5 catalytic cracking
... Công nghệ cracking xúc tác • Cracking xúc tác lớp cố định • Cracking xúc tác lớp sôi 6.1 Cracking xúc tác lớp cố định • Hiệu suất chuyển hóa thấp • Ngưng tụ cốc • Quá nhiệt cục 6.2 Cracking xúc ... trình cracking XT 4.1 Phản ứng mong muốn Phản ứng isomer hoá: Thường xảy trước phản ứng cracking 4 Hóa học trình cracking XT 4.2 Phản ứng không mong muốn Phản ứng chuyển vị hydro: Hóa học trình cracking ... trung hòa chúng cấu tử sản phẩm cracking xúc tác 4 Hóa học trình cracking XT 4.1 Phản ứng mong muốn Phản ứng cắt mạch (cracking ): xảy theo chế ion cacbonium Hoạt tính cracking hydrocacbon giảm dần...
Ngày tải lên: 30/08/2015, 20:09
Báo cáo khoa học: The catalytic mechanism of dye-decolorizing peroxidase DyP may require the swinging movement of an aspartic acid residue potx
... conservation of the four residues that form binding pockets for H2O2 In YcdB (type A), the relevant residues are Asp200, Arg312, Leu331, and Phe333 In TyrA (type B), the residues are Asp151, Arg242, ... double-headed arrows Four residues forming the pocket are shown in stick format FEBS Journal 278 (2011) 2387–2394 ª 2011 The Authors Journal compilation ª 2011 FEBS 2389 Catalytic residue Asp171 swings ... compound I are shown The black bars enclosing iron atoms represent porphyrin rings The acid–base catalytic residue is indicated as the imidazole group of histidine In compound I, the plus sign and the...
Ngày tải lên: 06/03/2014, 00:20
Báo cáo khoa học: Probing the catalytic potential of the hamster arylamine N-acetyltransferase 2 catalytic triad by site-directed mutagenesis of the proximal conserved residue, Tyr190 pot
... disturbs the conformation of these catalytic triad residues [35] In addition, residues close to D122 (I120, V121, A123 and G124), and residue L69, close to C68, and residue L108, close to H107, were ... that these two catalytic residues have both catalytic and structural roles [26,27] With the exception of the catalytic triad, little is known about the role of other active site residues on eukaryote ... the model structure of hamster NAT2 The catalytic triad is colored in red and Y190 is in green (B) Expanded view of selected residues of hamster NAT2 Residues are colored by atom type: carbon,...
Ngày tải lên: 16/03/2014, 00:20
Báo cáo khoa học: Catalytic activation of human glucokinase by substrate binding – residue contacts involved in the binding of D-glucose to the super-open form and conformational transitions ppt
... interactions with residues in the L-domain (residues N204, D205, N231, E256 and E290) and the S-domain (residues T168 and K169) (Fig 1B) In the super-open state, however, these contact residues are ... bonded to amino acids in the L-domain (residues N204, D205, N231, E256 and E290) and the S-domain (residues T168 and K169) (Fig 1B) To identify the contact residues involved in the initial binding ... and the [S]0.5 for Glc c Catalytic activity was nondetectable at 100 times the enzyme concentration used for wild-type hGK a Catalytic activity (nmolÆmg)1Æs)1) Relative catalytic activity (%) [S]0.5...
Ngày tải lên: 30/03/2014, 04:20
Báo cáo khoa học: The role of residue Thr249 in modulating the catalytic efficiency and substrate specificity of catechol-2,3-dioxygenase from Pseudomonas stutzeri OX1 ppt
... in their specificity, the catalytic residues seem to be very well conserved Six residues of the active site are completely conserved [36,37]: the three ligands to the catalytic metal (His154, ... the T249S mutation has little or no effect on the catalytic constants, whereas replacement of the threonine residue with an alanine or a glycine residue causes a significant reduction of the kcat ... similarly to both the catalytic metal and the conserved residues in the active site pocket One of the substrate hydroxyl groups is positioned near the conserved tyrosine residue and is closer...
Ngày tải lên: 30/03/2014, 10:20
Cracking xúc tác
... olefin, naphten aromat PP Polypropylen R Nhóm alkyl RCC Cracking xúc tác nguyên liệu dầu cặn (residue catalytic cracking) RE Cation đất RFCC Cracking xúc tác pha lu thể dầu cặn RON Trị số octan ... * Vì trình cracking xảy trạng thái lu thể (fluid) chất xúc tácvà hydrocacbon, nên trình xúc tác thờng đợc gọi Fluid Catalytic Cracking viết tắt FCC (cracking xúc tác pha lu thể) 675oC 2,4 atm ... lớn trình cracking xúc tác Cracking chuyển hoá phân tử lớn dầu mỏ thành phân tử hydrocacbon nhỏ thuộc phân đoạn gasolin (xăng) 1.1 Giới thiệu tổng quát công nghệ cracking Các trình cracking, ...
Ngày tải lên: 04/10/2012, 13:52
Introduction to fluid mechanics - P1
... notes (No 1) The beginning of fluid mechanics Fig 1.5 Sketches from Leonard0 da Vinci's notes (No ) On the other hand, the advent of hydrodynamics, which tackles fluid movement both mathematically ... water conduit had to be designed and its Fig 1.2 Relief of ancient Egyptian ship The beginning of fluid mechanics Fig 1.3 Ancient Greek ship depicted on old vase inclination or supply pressure had ... separation region Leonardo was the first to find the least resistive ‘streamline’ shape 4 History of fluid mechanics Leonardo da Vinci (1452-1519 ) An all-round genius born in Italy His unceasing zeal...
Ngày tải lên: 22/10/2012, 10:59
Introduction to fluid mechanics - P2
... called shear flow Figure 2.1 shows the case where the fluid in the gap is not flowing However, the velocity distribution in the case where the fluid is flowing is as shown in Fig 2.2 Extending eqn ... or air, the shearing stress z is proportional to the velocity gradient duldy Such fluids are called Newtonian fluids On the other hand, liquid which is not subject to Newton's law of viscosity, ... as a liquid pulp, a high-molecular-weight solution or asphalt, is called a non-Newtonian fluid These fluids are further classified as shown in Fig 2.4 by the relationship between the shearing...
Ngày tải lên: 22/10/2012, 10:59
Introduction to fluid mechanics - P3
... pressure 22 Fluid statics 3.1.3 Characteristics of pressure The pressure has the following three characteristics The pressure of a fluid always acts perpendicular to the wall in contact with the fluid ... value, values of the pressure acting at one point in a fluid at rest are equal regardless of its direction The fluid pressure applied to a fluid in a closed vessel is transmitted to all parts at ... the hydraulic press 3.1.4 Pressure of fluid at rest In general, in a fluid at rest the pressure varies according to the depth Consider a minute column in the fluid as shown in Fig 3.4 Assume that...
Ngày tải lên: 22/10/2012, 10:59
Introduction to fluid mechanics - P4
... Since no fluid comes in or goes out through the stream tube wall, the fluid is regarded as being similar to a fluid flowing in a solid tube This assumption is convenient for studying a fluid in ... obtained a value of x io4 for it In general, liquid is called an incompressible fluid, and gas a compressible fluid Nevertheless, even in the case of a liquid it becomes necessary to take compressibility ... nature of the situation Fluid particles running through a narrow channel flow, while undergoing deformation and rotation, are shown in Fig 4.8 Fig 4.8 Deformation and rotation of fluid particles running...
Ngày tải lên: 22/10/2012, 10:59