Document LJdqw2we8XY2kbQMw02egRVkw

Tithlee Division r UKOCH ENGINEERING COMPANY INC DOW CHEMICAL COMPANY Plaquemine, Louisiana l l | TRU-SCAN I C-29 Cracked Gas Water Wash Column April 2,1991 DO A 036223 OONFTOFNTTAl 2924 Crater Lake Drive Baton Rouge, Louisiana 70814 504/924-0621 FAX 504/924-2637 800/268-8970 029 WATER WASH LHC III DOW PLAQUEMINE 04/02/91 12:52:32 SCALES: 50 - 5000 FIGURE 1A 63 61 S9 57 55 53 SI 49 47 45 43 41 39 37 35 33 31 29 27 25 23 21 19 17 IS TRU-TEC, INC. PROCESS DIAGNOSTICS 1-000-280-0970 i 9 7 5 3 1 - I 111 Do CONf rn?36^4 ' *' rOFNTrAi. V Vv i- 1--1-4- I If - f--- + LHC SUPPORT - R & D MATH MODELING GROUP ASPEN MODEL APPLICATIONS A. LHC3 1. K-71 cracked gas compressor studies 2. Furnace load study 3. K-120 propylene compressor study 4. Quench section rigorous model S evaluation study 5. Revision of models to fit plant modification 6. Plant start-up compressor false-load study 7. Revision of furnace models to fit new coils 8. Program for easy insertion of model parameters B. LHC2 1. K-71 cracked gas compressor studies 2. K-71 intercooler replacement evaluation 3. TK-71 steam turbine upgrade evaluation 4. LHC2 expansion study 5. Distillation column profiles for control system improvement 6. Updating of model to fit plant modifications C. LHC8 BENZENE PLANT 1. Model of entire benzene plant 2. Plant evaluation under several design cases 3. Column profiles for control system development JGM 7/91 00 A 03672S CONFTDENTT Al. DOW CONFIDENTIAL LHC SUPPORT - R & D MATH MODELING GROUP EFPS APPLICATIONS Ethylene Furnace Program System ( EFPS ) A complete cracking furnace model system licensed from Pyrotec Institute A. LHC3 Naphtha furnace cracking study B. LHC2 2F25 Study JGM 7/91 00 DOW CONFIDENTIAL LHC SUPPORT - R & D MATH MODELING GROUP CFD APPLICATIONS Computational Fluid Dynamics ( CFD ) Using PHOENICS system A. LHC3 Flow study of split-coil furnace venturis Flow patterns in Benzene Plant HDA Reactor B. LHC2 2F25 Convection Section Flow Study JGM 7/91 DO A 036??7 CONFTOFNTIAL DOW CONFIDENTIAL LHC SUPPORT - R & D MATH MODELING GROUP LINEAR PROGRAMMING APPLICATIONS Gulf Coast Hydrocarbons Economic Model LP optimization including LHC3, LHC2, & Texas LHC plants Used for feedstock purchases & other economic decisions JGM 7/91 00 A 036228 CONFIDENTIAL DOW CONFIDENTIAL EFPS MODEM >F NAPHTHA FURNACE STACK GAS tt t QUENCH WATER PROCESS TLX FLUID GENERATED STEAM DO A 0 3 6 2 2 9 CONFIDENTIAL 1H)\V CONFIDENTIAL ; ; TOO 5/91 E1IVS MODELING SOFTWARE DOW (JONni)KNTIAL l! * TOO 5191 NAPHTHA HI KNACK CONVIiC SECTION NAPHTHA DILUTION STEAM t HC + STEAM * DOW CON1IDIM IAL ** TOO 5191 COMPARISON OP SIMULATION & FURNACE DATA TEMPERATURE DEG C LTPC STACK CROSSOVER COT BRIDGEWALL MPR = METHANE / PROPYLENE 1.04 FUEL REQUIREMENT = 2700 KG/H (65 % CH4, 31 */c H2) STEAM GENERATED - 31000 KG/H EFFICIENCY = 74.8 % (RAD = 44.2 %, CONVEC = c0.6 (/o) IK)\V CONFIDENTIAL ** TOO 5/91 /* ' FURNACE RFC HESS I ON MODEL MANY OASIS STUDIES l i I \ lTl 14 D EFR 3 F liFT^.Od toOICl STATISTICAL. REGRESSION OF RESULTS I44N3 CaS Characteristics = f {Naphtha, Steam ratio, Excess Air, Conv, Pcin, Pcot} E.g. lover = 440.2 1 (Naphtha/1000)[3.5475MPR + 2.0625SR] + 93.6 PcinXAir j > (JSEriJL FOR FURNACE OPERATION AND CONTROL * IK)\V CONFIDENTIAL * TOO 5/91 DO a 0 3 6 3 3 3 CONFTDFNTTAL High Pressure Steam Steam Superheat Coil High Temperature Process Coil 00 A 036234 CONFIDENTIAL -- > : 12.50 m/s ._________Min : 2.1707E-02_____ 2F-25 Convection Section *Dow Confidential* Max : 1.0716E+01 PHOENICS