KG Engineering Solutions
KG Engineering Solutions
  • 115
  • 455 980
Aspen Plus 12: Simulation of Xylene Production; Kinetic approach; Plotting the maximum concentration
The hydrodealkylation reaction is conducted isothermally at 560 °C and 35 atm. Two key reactions take place within the reactor:
Reaction 1 (desired):
Mesitylene + H₂ → m-Xylene + CH₄
Reaction 2 (undesired):
m-Xylene + H₂ → Toluene + CH₄
Reaction 2 is undesirable because it consumes the desired product, m-xylene, to produce toluene. The reactor performance is analyzed by plotting the fractions of H₂, mesitylene, and m-xylene as functions of reactor length. The optimal reactor length is identified as the point where the m-xylene concentration reaches its maximum.
All Aspen simulations available in this channel can be downloaded with a donation. After completing your donation via the following link, you will be redirected to the download page.
www.paypal.com/donate/?hosted_button_id=YNKPF59PG3SKW
kg.engineering.solutions@gmail.com
มุมมอง: 18

วีดีโอ

Aspen Plus 12 Simulation of a Natural Gas to Methanol Process via Autothermal Reforming
มุมมอง 19016 ชั่วโมงที่ผ่านมา
In this video, we simulate a natural gas to methanol process. Natural gas, together with oxygen and steam, is supplied to the autothermal reforming unit, where syngas is generated. The coupling of sub-stoichiometric exothermic oxidation with endothermic reforming reactions leads to a net reaction enthalpy of zero. The autothermal reforming unit includes two reactors: a pre-reformer and an autot...
Aspen Plus 12: Simulation of Solid Oxide Water Electrolyzer using MATLAB; actxserver; Cell Voltage..
มุมมอง 18414 วันที่ผ่านมา
The video demonstrates modeling of solid oxide water electrolysis using Aspen Plus and MatLab. For a small donation, you can download the Aspen Plus file, MATLAB file, and PowerPoint file from the following link: www.paypal.com/donate/?hosted_button_id=SJGDTS7DDTUMA All Aspen simulations on this channel can be downloaded for a donation. After completing the donation, you will be redirected to t...
Aspen Plus 14: Alkaline Electrolysis; Sensitivity Analysis; Polarization Curve; Faraday efficiency
มุมมอง 18021 วันที่ผ่านมา
In this video, the stack voltage, reversible voltage, ohmic overpotentials, activation overpotentials, concentration overpotentials, power need, voltage efficiency, Faraday efficiency and specific power consumption are calculated as functions of current and temperature through sensitivity analyses. For a small donation you can download the Aspen Plus file from the following link: www.paypal.com...
Aspen Plus 14: Alkaline electrolyzer; Rigorous model; Electrodes; Membrane; Electrical resistivity
มุมมอง 21628 วันที่ผ่านมา
In this video, alkaline electrolyzer is simulated with Aspen Plus 14. The model type Rigorous is used. The following specifications are entered: - Total flow rate: 250 kg/h - KOH concentration: 0.35 w/w - Total current: 40 A - Pressure: 5 bar - Temperature: 80 °C - Active area: 0.01 m² - Width and length of channels: 0.1 m For a small donation you can download the Aspen Plus and PowerPoint file...
Aspen Plus 14: Alkaline electrolyzer; Shortcut model type; Faraday efficiency; Voltage efficiency
มุมมอง 283หลายเดือนก่อน
In this video, alkaline electrolyzer is simulated with Aspen Plus 14. The model type Shortcut is used. The following specifications are entered: - Total flow rate: 300 kg/h - KOH concentration: 0.35 w/w - Total current: 20 A - Faraday efficiency: 0.9018 - Voltage efficiency: 0.8222 - Pressure: 5 bar - Temperature: 80 °C For a small donation you can download the Aspen Plus and PowerPoint files f...
Aspen Plus: Liquid Liquid Extraction; Single Stage; Multi Stage; Countercurrent
มุมมอง 1922 หลายเดือนก่อน
Liquid-liquid Extraction (LLE) in an important separation process in industry. LLE is used to separate two miscible compounds using a solvent that specially dissolves one of them. The choice of solvent in LLE is mostly based on its polarity as generally, polar solvents extract polar analytes better than apolar or nonpolar analytes. LLE is based on liquid-liquid phase equilibrium. This video int...
Aspen Plus: Simulation of a Biomass-to-SNG Process
มุมมอง 6853 หลายเดือนก่อน
Synthetic Natural Gas (SNG) can be produced through a variety of techniques that are both renewable and non-renewable. Conventional methods for producing SNG use non-renewable sources such as coal. Renewable methods for producing SNG use sources such as biomass from landfills, livestock farming and waste treatment. In this video, we simulate a Biomass-to-SNG process. For a small donation you ca...
Aspen Plus: Simulation of Fischer Tropsch Syncrude Distillation
มุมมอง 6463 หลายเดือนก่อน
In this video, the syncrude generated in the simulation in the video in the info card is distilled in two steps. In the first step, naphtha (C5-11), middle distillates (C11-20), wax (C20 ) and residual gas are separated. In the second step, wax is separated into light wax (C20-35) and heavy wax (C35 ). Reference: Marco Marchese, Emanuele Giglio, Massimo Santarelli, Andrea Lanzini. Energy perfor...
Aspen Plus: ethyl acetate production process via esterification of acetic acid and ethanol
มุมมอง 6804 หลายเดือนก่อน
Ethyl acetate is widely used for the production of lacquers and surface coating resins with a world annual production capacity higher than 3 million tons. Ethyl acetate is mainly produced via the esterification of acetic acid and ethanol. In this video, the conventional process of esterification will be simulated using Aspen Plus. Source: Branislav Šulgan, et al. Multi-Aspect Comparison of Ethy...
Aspen Plus: Simulation of pyrolysis of waste tires with a kinetic model
มุมมอง 1K5 หลายเดือนก่อน
Approximately 1.5 billion tires are produced each year which will eventually enter the waste stream representing a major potential waste and environmental problem. However, there is growing interest in pyrolysis as a technology to treat tires to produce valuable oil, char and gas products. In this video, a kinetic model for pyrolysis of tires will be simulated in Aspen Plus. For a small donatio...
Aspen Plus simulation of an amine scrubbing system for biogas upgrading
มุมมอง 1.4K6 หลายเดือนก่อน
Amine scrubbing is one traditional method of biogas upgrading. Amine scrubbing is characterized by low methane slippage and its capability to provide a high purity renewable methane product. In this video, an amine scrubbing system for biogas upgrading will be simulated using Aspen Plus. For a small donation you can download the Aspen Plus file and the PowerPoint file from the following link: w...
Aspen Plus: Conversion of CO2 and recycle gas from a FT process into synthesis gas via RWGS
มุมมอง 7407 หลายเดือนก่อน
Reverse water gas shift (RWGS) reaction is a possible way to generate synthesis gas for Fischer-Tropsch synthesis. In this video, we will simulate the conversion of CO2 and recycle gas from a Fischer-Tropsch process into synthesis gas via RWGS. The RWGS will be simulated at 800 °C and ambient pressure. For a small donation you can download the Aspen Plus file and the PowerPoint file from the fo...
Aspen Hysys: Three Phase Separator; Recycle-Gas, FT-Oil and Water Separation
มุมมอง 3118 หลายเดือนก่อน
This video introduces into the three-phase separation in Aspen Hysys. The product in the video th-cam.com/video/fUTrkLVRQ1s/w-d-xo.html is separated into water, oil and gas. For a small donation you can download the Hysys File from the following link: www.paypal.com/donate/?hosted_button_id=MDD8YRWGWXJRW kg.engineering.solutions@gmail.com
Aspen Hysys Two Phase Separation Wax Separation from Fischer Tropsch Product
มุมมอง 3528 หลายเดือนก่อน
This video introduces into the two-phase separation in Aspen Hysys. The Fischer-Tropsch product in the video in the info cards is separated into wax and gas phase by Aspen Hysys. For a small donation you can download the Aspen Plus file, Hysys File, and the files of the video th-cam.com/video/kHEMp1mSsi0/w-d-xo.html from the following link: www.paypal.com/donate/?hosted_button_id=NHQLL86WTRRAY ...
Aspen Plus: Simulation of Fischer Tropsch Synthesis using the ASF Relationship, Rstoic, and Fortran
มุมมอง 1.8K11 หลายเดือนก่อน
Aspen Plus: Simulation of Fischer Tropsch Synthesis using the ASF Relationship, Rstoic, and Fortran
Aspen Plus: Economic Analysis of the Production of Acetic Anhydrid
มุมมอง 3.3K11 หลายเดือนก่อน
Aspen Plus: Economic Analysis of the Production of Acetic Anhydrid
Aspen Plus: Autothermal Reforming of Natural Gas
มุมมอง 1.7Kปีที่แล้ว
Aspen Plus: Autothermal Reforming of Natural Gas
Characterization of Molecules Using Aspen Properties
มุมมอง 319ปีที่แล้ว
Characterization of Molecules Using Aspen Properties
Aspen Plus Biomass Crushing
มุมมอง 541ปีที่แล้ว
Aspen Plus Biomass Crushing
Approximate and ultimate analyzes of more than 1000 biomass samples
มุมมอง 231ปีที่แล้ว
Approximate and ultimate analyzes of more than 1000 biomass samples
Aspen Plus: synthesis of high density polyethylene by polymerization of ethylene
มุมมอง 953ปีที่แล้ว
Aspen Plus: synthesis of high density polyethylene by polymerization of ethylene
Aspen Plus: water De Souring system by an electrolyte system
มุมมอง 285ปีที่แล้ว
Aspen Plus: water De Souring system by an electrolyte system
Aspen Plus: Simulation of a Chemical Looping Combustion System
มุมมอง 2.9Kปีที่แล้ว
Aspen Plus: Simulation of a Chemical Looping Combustion System
Aspen Plus: Simulation of an internal combustion engine powered by syngas
มุมมอง 1.6Kปีที่แล้ว
Aspen Plus: Simulation of an internal combustion engine powered by syngas
Aspen Plus: Fischer-Tropsch Process using an estimated Distribution of Hydrocarbon Products by ASF
มุมมอง 1.7Kปีที่แล้ว
Aspen Plus: Fischer-Tropsch Process using an estimated Distribution of Hydrocarbon Products by ASF
Aspen Plus: Simulation of a hydrogen liquefaction cycle
มุมมอง 2Kปีที่แล้ว
Aspen Plus: Simulation of a hydrogen liquefaction cycle
Aspen Plus: Simulation of H2S and CO2 Removal from Syngas by Cryogenic Distillation
มุมมอง 5Kปีที่แล้ว
Aspen Plus: Simulation of H2S and CO2 Removal from Syngas by Cryogenic Distillation
Aspen Plus: Simulation of Cryogenic Air Separation
มุมมอง 5Kปีที่แล้ว
Aspen Plus: Simulation of Cryogenic Air Separation
Aspen Plus: Simulation of Fluidized Bed Reactor for Chemical Looping of Synthesis Gas
มุมมอง 3.4Kปีที่แล้ว
Aspen Plus: Simulation of Fluidized Bed Reactor for Chemical Looping of Synthesis Gas

ความคิดเห็น

  • @animezia3319
    @animezia3319 วันที่ผ่านมา

    hey thanks for sharing this simulation, i tried to run the exact same simulation nut I'm getting error that most of the structure has not been defined and the calculated Mw of TRIPA-01 is 807.3344 while the available one is 807.3200. I'm using aspen v11, kindly help me out regarding this matter. thanks in anticipation.

  • @Dinotaeng
    @Dinotaeng 5 วันที่ผ่านมา

    Thank you always!

  • @семенбирюков-ь9г
    @семенбирюков-ь9г 5 วันที่ผ่านมา

    Hi I sent you an email. I would be very grateful if you would share the files for that video - geometry, mesh, etc.

  • @javadjeddizahed1967
    @javadjeddizahed1967 11 วันที่ผ่านมา

    Could you share the reference for the SOE model equations?

  • @thunnut4914
    @thunnut4914 17 วันที่ผ่านมา

    how can I know how much the reboiler duty? I'm currently studying in aspen plus. Thank you for your VDO and your answer.

  • @tuptek109
    @tuptek109 18 วันที่ผ่านมา

    Could you tell me if it possible to estimated a fractional conversion of component CO? You writed on video that fractional conversion is later determined by Fortran subroutine. I did this simulation (from this video) and I don't know, where is fractional conversion of component CO individual reactions.I will be grateful for your answer.

  • @micaangelevangelista3207
    @micaangelevangelista3207 18 วันที่ผ่านมา

    Hello can you send me the link or info on where you find the stoichio and percent conversions? Thank you!

  • @Dinotaeng
    @Dinotaeng 19 วันที่ผ่านมา

    thank you for video!

  • @amarpatil8512
    @amarpatil8512 21 วันที่ผ่านมา

    Hello KG Engineering, I really appreciate your videos on youtube and Linkedin as well. Keep it up. I want study Amine Absorption in Hysys. Also, in rate based modeling, in Promax/Protreat we put actual tray nos...SO how this is done in hysys rate based modelsing?? plz help

    • @kgengineeringsolutions
      @kgengineeringsolutions 18 วันที่ผ่านมา

      Hello, thank you. Unfortunately, I am not familiar with Hysys

  • @Dinotaeng
    @Dinotaeng 26 วันที่ผ่านมา

    THANK YOU !

  • @LuisPenaRojas
    @LuisPenaRojas 27 วันที่ผ่านมา

    Again thak you for share this content. One question, Do you think that it's possible to simulate the Bio-OIL as non-conventional component since there is no available data about composition and only there is available overall yields? I suppose that will be necessary more data about properties of bio-oil yo simulate the condensation phase, but I am not sure if it is possible. Do you have any content similar like that?

    • @kgengineeringsolutions
      @kgengineeringsolutions 24 วันที่ผ่านมา

      You're welcome. I once assumed a formula for bio oil. See the video th-cam.com/video/md4inypVGKs/w-d-xo.html. It might help you.

  • @ansonhenry6371
    @ansonhenry6371 27 วันที่ผ่านมา

    ASPEN V14 provides a local case of alkaline electrolyzed water. Could you explain it to us? Thank you very much

  • @artrafaranah
    @artrafaranah หลายเดือนก่อน

    The generator does not produce any refrigerant (water vapour) at 100°C and 7.90 Kpa. How to overcome this problem please help sir

  • @19sahilpatil23
    @19sahilpatil23 หลายเดือนก่อน

    Hello sir i want to download the simulation how can i do payment

  • @AliShokriKalan
    @AliShokriKalan หลายเดือนก่อน

    I have donated two times to get the files, but it was empty. Have you deleted it?

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      Sorry, something went wrong. Please check the link again. If you no longer have the link, please send me an email and I will send you the link. Please send me your PayPal account in an email. I will refund your donation. Sorry again.

  • @miguelangelgarciapopo6211
    @miguelangelgarciapopo6211 หลายเดือนก่อน

    Have you considered carrying out a simulation of HTC in liquid phase?

  • @jessicacuesta9097
    @jessicacuesta9097 หลายเดือนก่อน

    Please, can You tell me how did you calculate the distillate to feed ratio?

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      Please see the source I mentioned at the beginning.

  • @abeerkhalid-r2y
    @abeerkhalid-r2y หลายเดือนก่อน

    hello , i am wondering why did you stopped the recording three times and start again ?

  • @ashutoshsharma2760
    @ashutoshsharma2760 หลายเดือนก่อน

    you dont support payments from india?

  • @IrailyGutierrez
    @IrailyGutierrez หลายเดือนก่อน

    Hello sir, could you tell me how you determined the height of the tower? I calculated the diameter on my own but I'm confused about the height. If you could explain it to me I would be very grateful.

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      Hi, the height depends on the quality you want to achieve.

  • @maar2439
    @maar2439 หลายเดือนก่อน

    sir, why B4 is not in turbine model?

  • @combinesoldier6558
    @combinesoldier6558 หลายเดือนก่อน

    pq tanto anuncios sapo y la ctm

  • @LuisPenaRojas
    @LuisPenaRojas หลายเดือนก่อน

    Great thank you for sharing. I have a questions, any reason for not consider BIO-OIL fir this simulation? or this is based on the source you use to model the process?

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      You're welcome. Because the pyrolysis gas is burned.

  • @AliShokriKalan
    @AliShokriKalan หลายเดือนก่อน

    could you please specify the reference that you used?

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      Unfortunately I have no reference for the simulation

  • @plenus2017
    @plenus2017 หลายเดือนก่อน

    Hey, nice video I will try to follow. Could you do one for chemical looping reforming for hydrogen production?

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      Hi, thank you. I have added the process to the list.

    • @plenus2017
      @plenus2017 หลายเดือนก่อน

      @@kgengineeringsolutions I followed the process, I just made a mistake but that may be completely understable because it´s my first time using Aspen Plus. Sorry to ask but how long is that list? I hope you use experimental data to CLR process, including the use of the calculator as you did in other process simulation.

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      @@plenus2017 it depends on whether I find a good publication on the process.

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      Did you see this video th-cam.com/video/wlcUPYUSzAE/w-d-xo.html ?

    • @plenus2017
      @plenus2017 หลายเดือนก่อน

      @@kgengineeringsolutions yes but I got lost in Excell sheets so I didnt watch it fully.

  • @laithmustafa226
    @laithmustafa226 หลายเดือนก่อน

    hello sir, while you are calculating Vcell ,why you used current density insted of current ? thank you

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      Hi, I made the video a long time ago. Please see the paper I cited.

  • @ಅಜಯಕನ್ನಡಿಗ-ಪ4ಫ
    @ಅಜಯಕನ್ನಡಿಗ-ಪ4ಫ 2 หลายเดือนก่อน

    nice work🤩🤩. could you please do other simulations in this paper 🙏 or give some tips on those

    • @kgengineeringsolutions
      @kgengineeringsolutions หลายเดือนก่อน

      Thank you. I couldn't resimulate the other processes. Sorry

  • @rosyjediva3672
    @rosyjediva3672 2 หลายเดือนก่อน

    Could you do the plastic pyrolysis process please?

  • @MaksatYolculuk
    @MaksatYolculuk 2 หลายเดือนก่อน

    Ladies and gentlemen, "COMPONENT 'BIOMASS' IN SUBSTREAM 'NC' HAS ZERO FLOWRATE IN THE OUTLET STREAM. FRACTIONAL CONVERSION HAS BEEN MODIFIED BY A FACTOR OF '1.000000'" is just a warning. You and Aspen can calculate the decimals with very little difference. Perhaps the decimal point is 1.0000002 rather than 1. Ignore this error if it is 1.0000. This is just a warning you need to be check, not error to run. If the value is less than 1.000, such as 0.98 or 0.99, proceed with your stoichiometric calculations. You can close the toggle of warning on the flow sheet on the menu if you want.

  • @adrianoferreira5214
    @adrianoferreira5214 2 หลายเดือนก่อน

    Are you able to provide the source material for this simulation? Thank you and have a nice day

  • @DeepanshuAwasthi-w3h
    @DeepanshuAwasthi-w3h 2 หลายเดือนก่อน

    After giving the combustion reactions and all the other inputs as stated by you in the video, still amount of carbon is left in outlet stream after 1st PFR where combustion reactions are given, but in your video no carbon is left? I tried doing it over but same problem occurs. Please help.

    • @kgengineeringsolutions
      @kgengineeringsolutions 2 หลายเดือนก่อน

      Unfortunately, I don't know how to fix the discrepancy

  • @ytyj777-ge6eb
    @ytyj777-ge6eb 2 หลายเดือนก่อน

    Thank you for the wonderful vedio! I have a confusion at 16:09, the calculation of the fractional conversion of H2O. [H2O conversion (about 0.09) X MW of H2O (18.015)]/[0.65*900] should be near 0.00275, but the result shows 2.75. Even if the value was expressed as percentage, it would be 0.275. I cannot understand what happend.

    • @ytyj777-ge6eb
      @ytyj777-ge6eb 2 หลายเดือนก่อน

      Oh...... I got the answer at 39:27, Thanks

  • @farahashrafsayed5049
    @farahashrafsayed5049 3 หลายเดือนก่อน

    could you put the line of the ppt here in the description ?

  • @williamcostaesilva8614
    @williamcostaesilva8614 3 หลายเดือนก่อน

    Thanks for the tutorial. It will help a lot.

  • @HananaDaisy
    @HananaDaisy 3 หลายเดือนก่อน

    Hello, can you do aspen plus simulation on sorption enhance steam methane reforming ? 🥹

    • @kgengineeringsolutions
      @kgengineeringsolutions 3 หลายเดือนก่อน

      Hi, unfortunately not in the near future. Sorry😔

  • @garnielortega9265
    @garnielortega9265 3 หลายเดือนก่อน

    Buenas noches Estoy en un proyecto para la pirolisis de la biomasa de la yuca en aspen plus. Ya tengo la caracterizacion de la biomasa, pero necesito informacion cinetica y l estequimetria de las reacciones, si me suscribo al canal me podria ayudar a entender la estequiometria de la biomasa?

  • @Livvo_0004
    @Livvo_0004 3 หลายเดือนก่อน

    Hi, thanks for the video! What about longer hydrocarbon chains though? >C13. Aren‘t they also produced in the process and dont they also make up a significant amount? In your new video you are using distillation to separate Fischer tropsch products and you are also including long hydrocarbon chains like waxes. Why do this if you dont have any? Thank you very much in advance!

    • @Livvo_0004
      @Livvo_0004 3 หลายเดือนก่อน

      Also what source are the parameters based on? :)

    • @kgengineeringsolutions
      @kgengineeringsolutions 3 หลายเดือนก่อน

      Hi, you are welcome. The focus in this video is on how a RSTOIC reactor can be modeled for the FT process. The video is not based on a single publication. Yes, longer chain hydrocarbons are formed in the FT synthesis. The new video is based on a paper. I have mentioned the paper in the video.

  • @Dhivanka71
    @Dhivanka71 3 หลายเดือนก่อน

    i still dont understand in the calculator part. can you give a definition or a brief explanation? and why not directly use PYRO (RGibs). and if a want to define the size of the particle, where can i input the value? (the size of the particles are same in the simulation)

  • @9reko
    @9reko 3 หลายเดือนก่อน

    Hello, it was great video. May i ask where to find this simulation in a reference? I went through the journal you mentioned to some who asked but the simulation there is different

    • @kgengineeringsolutions
      @kgengineeringsolutions 3 หลายเดือนก่อน

      Hello, thank you😀 Unfortunately, simulations in some papers cannot be reproduced.

  • @alhamed93
    @alhamed93 3 หลายเดือนก่อน

    I got two error when I tried doing the same: 1- M-BAL LOOP DID NOT CONVERGE IN 50 ITERATIONS. CHECK STOICHIOMETRY/MOLECULAR WEIGHTS. 2- ERROR OCCURRED DURING RFLASH ROUTINE CALCULATION. Do you know why did I got that? Thank you

  • @Someone-x1i
    @Someone-x1i 3 หลายเดือนก่อน

    Hello

  • @s.mmustafarizvi4441
    @s.mmustafarizvi4441 3 หลายเดือนก่อน

    Thanks for uploading it. I was in need of it, thank you

  • @ERICANTONIOSOARESSILVA
    @ERICANTONIOSOARESSILVA 4 หลายเดือนก่อน

    bad mesh

  • @DanielBoudiab-e2h
    @DanielBoudiab-e2h 4 หลายเดือนก่อน

    for reynolds number of 90000 is it better to model it as k-w?

  • @pmfitline_yeongrok
    @pmfitline_yeongrok 4 หลายเดือนก่อน

    The video was very helpful. What paper was the simulation based on? I would like to check the results against the paper.

  • @someone-gg8pz
    @someone-gg8pz 4 หลายเดือนก่อน

    This is so helpful.. Can you please provide some sources for literature review..

  • @amarpatil8512
    @amarpatil8512 4 หลายเดือนก่อน

    Nice one..should have shown some pfd or process description

  • @m.anitha6022
    @m.anitha6022 4 หลายเดือนก่อน

    its clear-cut explanation sir, thank you. but how do we connect this to CSTR using PID controller?

  • @khantthunaing4691
    @khantthunaing4691 5 หลายเดือนก่อน

    how can i contact u. i need ur suggestion ( pyrolysis of waste tire with aspen plus v11 ). email pls