Senior Process Engineer at Linde inc. Graduated in 2020 from Lamar university with a PhD in Chemical Engineering. Currently located in Houston, Texas.
Below are my areas of expertise. - Process engineering - Process modeling - Process Control - Optimization - Safety & risk - Refining/petrochemicals - Separation Technologies. - Cryogenic Separation (Cold Box Liquefiers) - Carbon Capture (Both via Absorption and Adsorption) - Pressure Swing Adsorption. - Temperature Swing Adsorption. - Amine wash technology for carbon capture. - Catalysis.
State-of-the-art developments in oxidation activity and deactivation mechanisms of the diesel oxidation catalyst (DOC) are reviewed. The effect of temperature, hydrocarbons, CO, H2O, hydrogen, NO, oxygen, NO2, precious metals, and catalyst zoning on DOC's performance is analyzed. CO, NO, and hydrocarbon oxidation is self-inhibited. Hydrogen reduces the light-off temperatures of CO and hydrocarbons. Oxygen and NO2 act as oxidants. Hydrothermal, sulfur, chemical, and hydrocarbon poisoning are primary deactivation mechanisms. Hydrothermal deactivation is the leading cause of Pt-catalyst, and others are less severe. Further improvements regarding biodiesel impact, phosphorous poisoning, and hydrothermal stability are needed to advance DOC science.
1,3-Butadiene is used in the production of commercially important elastomers. However, the sustained production of 1,3-butadiene is facing challenges due to the reduction in availability of heavier cracker feedstock. In this article, three different routes that utilize biomass to produce 1,3-butadiene and associated coproducts ethylene and propylene from lignin are explored. Steady-state simulation models are developed, and it is shown that, while all three routes are feasible, the yield of 1,3-butadiene is low in all cases. For this reason, it is necessary to consider the production of other useful products, such as ethylene and propylene, in an integrated plant that is used to make up the shortfall of 1,3-butadiene. The simulation models provide an estimate of the amount of lignin needed to produce additional 1,3-butadiene to augment the shortfall from a traditional 1,3-butadiene plant. Furthermore, the simulation models can be used to calculate the emissions of carbon dioxide and carbon monoxide.
Propylene glycol is an important member of the glycol group and is widely used in the industry as a raw material particularly for producing polyester compounds, food additives, and antifreeze. In this research, a novel integrated plant is developed for the production of propylene glycol from shale gas. This integrated approach has the benefit of safer operating conditions because the intermediate propylene oxide, which is explosive, does not need to be stored and transported. Furthermore, there are potential economic benefits from integration. The overall plant is simulated in the Aspen Plus environment, and a variety of process conditions are tested at the steady state to optimize the production of propylene glycol. Heat-integration tools are utilized for energy-saving and capital cost reduction opportunities. A comparative economic assessment based on the existing plant information indicates that the use of process integration techniques has the potential to reduce costs significantly.
Monoethylene glycol (MEG) is used to produce polyester fibers and polyethylene terephthalate resins. It is also utilized in antifreeze, pharmaceuticals, and cosmetics applications. In this research, we consider the development of a novel process plant that produces MEG from ethylene. The proposed ethylene-to-ethylene oxide (EO) plant is integrated with an EO-to-MEG plant to reduce utility costs and recover high-value products. Energy-saving opportunities are analyzed via heat integration tools. Furthermore, a multitube glycol reactor is used in conjunction with a novel MTO catalyst in the ethylene-to-EO reactor. Our results demonstrate that the integrated EO/EG plant produces ethylene glycols with that same purity and product recovery as conventional designs. A comparative economic assessment based on a 200,000 t/y plant indicates that process integration techniques can reduce costs significantly.
Abstract As cracker feed around the globe is trending towards lighter feedstocks, butadiene production facilities worldwide are now run at turndown capacities. Models are developed to study how operation at turndown ratios of feed rates affects the purity of 1,3‐butadiene. The optimal solvent‐to‐feed ratio was found to be in the range of 6–7 when the plant is run at normal throughput; however, it is necessary to change the solvent‐to‐feed ratio in the range of 10–11 when the plant is operating at turndown capacity. Dynamic simulations indicate that the effect of fluctuations in the feed flow rate on product purity can be minimized by a ratio controller to change the solvent flow rate and a composition controller to alter the side‐draw flow rate.
Looking for opportunities to collaborate as co-author with the fellow researchers in Engineering field. I am a Chemical Engineer via traini…
Looking for opportunities to collaborate as co-author with the fellow researchers in Engineering field. I am a Chemical Engineer via traini…