Chemical Engineering Jobs

Hello, We operate a batch plastic pyrolysis plant with capacity 7.5–8 ton per batch. Feedstock: LDPE, HDPE, PP plastic waste. Our goal is to improve process performance and oil output. Current issue: Sometimes wax formation becomes high, and oil yield becomes lower than expected. We want help in understanding: • how to reduce wax formation • how to increase oil yield • how to improve diesel range oil (C12–C18) • how to stabilize vapour temperature • how to improve condenser performance Plant already running with: reactor vapour pipeline separator multi-stage condensers We have temperature readings from plant and process data available. We are looking for a Chemical or Process Engineer who understands: pyrolysis thermal cracking distillation h...

JOB TITLE Freelance Chemical / Process Engineer – Plastic Pyrolysis Optimization PROJECT DESCRIPTION We operate a 7.5–8 TPD batch plastic pyrolysis plant processing LDPE, HDPE and PP. We are looking for a freelance Chemical / Process Engineer to help optimize plant performance and reduce wax formation. The plant is already operational. We need process optimization, not basic plant design. OBJECTIVE OF CONSULTATION • reduce wax formation percentage • increase liquid oil yield • increase diesel fraction (C12–C18 range) • improve vapour cracking efficiency • stabilize vapour temperature profile • optimize condenser temperature staging • improve consistency between batches PLANT CONFIGURATION (SUMMARY) • rotary batch pyrolysis reactor &...

I need to address a developer's drainage issue caused by an unplanned ditch after construction of homes. This ditch is causing water drainage problems, is a safety hazard, and requires erosion control. Requirements: - Fill the ditch - Ensure proper water drainage - Address safety hazards - Control erosion Ideal Skills and Experience: - Experience with earthworks and land modification - Knowledge of drainage and erosion control - Ability to assess and mitigate safety hazards Looking for a reliable solution to resolve this issue effectively.

I have a petroleum hydro-processing unit that requires a robust reactor model built from the ground up. My immediate priority is model creation rather than plant-wide optimisation, and the focus is strictly on the reactor section handling petroleum-based feedstock. Here is what I need: • A first-principles or data-driven reactor model that captures hydrogen consumption, sulfur/nitrogen removal and catalyst performance under typical HDS/Hydro-cracking conditions. • Calibration against operating data I will provide (feed assays, reactor temperatures, pressures and product qualities). • Well-documented equations or code (Python, MATLAB, gPROMS, Aspen Custom Modeler—whichever you prefer) plus a short validation report comparing predictions with plant data. If you...

This is a highly challenging, research-level task that requires strong expertise in chemical engineering and advanced process simulation, particularly Aspen Custom Modeler (ACM), Aspen HYSYS, Aspen Plus. The project involves making membrane block for gas separation using Aspen Custom Modeler. Here is a reference for the result of the membrane block should be able to achieve: Merkel et al. (2010) - Power plant post-combustion carbon dioxide capture: An opportunity for membranes (Paper link also attached to this project for direct download). Scope (Summary): Develop a complete Aspen Custom Modeler (ACM) model of a membrane Implement mass & energy balances, reaction kinetics, and mass and heat transfer correlations and every other correlation. Deliver: - ACM model file - ACM model ...

I’m looking for a results-driven industrial procurement professional who can take full ownership of mechanical sourcing for a series of upcoming projects. My priority is to secure reliable, competitively priced components that meet strict technical and quality requirements, all while keeping lead times realistic and documentation airtight. Your role will involve translating our engineering requirements into clear RFQs, identifying and qualifying suppliers worldwide, and negotiating terms that protect both cost and schedule. Experience with hydraulics, filtration, or water-treatment hardware would be an added bonus, but the core need is solid mechanical component sourcing know-how. To keep expectations crystal clear, here’s what I’ll need from you before sign-off: &bull...

I need a well-structured question bank that strictly follows the latest Maharashtra State Board syllabus for both 10th and 12th grades in Mathematics and Science. Every chapter should be represented, and the spread of questions must reflect the actual board pattern—from straightforward concept checks to higher-order, application-oriented problems—so that teachers can pull ready-to-use material for class tests, prelims, and board exam practice. The work involves: • Drafting original, error-free questions fully aligned to the official textbooks and marking scheme. • Providing clear, model answers (with step-by-step solutions in Maths and precise explanations in Science). • Delivering the material neatly organised in editable MS Word or Google Docs files, cha...

I support the Chegg India Q&A board and need an extra pair of expert hands in Chemistry. The questions you will receive are at the high-school level, ranging from basic stoichiometry to introductory organic mechanisms. Your job is to craft clear, step-by-step solutions that a teenager can follow without losing academic rigour. What I expect from every answer • A fully worked solution typed in Word, Google Docs, or LaTeX—whichever you are fastest with • Short conceptual recap at the top, followed by the calculation or reasoning steps • Any neatly drawn diagrams or chemical structures embedded as images (ChemDraw, MarvinSketch, or hand-drawn and scanned) • Original wording—plagiarism or AI-generated dumps are instantly rejected • Delivery w...

I need the full worked solutions for two linked Separations assignments: CW 1a (Section 2, Q7 – variant 2) centres on dryers. The write-up must cover evaporation and humidity calculations, wet-bulb temperature analysis, and the underlying heat- and mass-transfer principles. CW 1b (Section 6, Q4) addresses distillation column design. Here I expect careful treatment of vapour–liquid equilibrium, practical separation process design choices, and an assessment of column efficiency and overall performance. All numerical work must be executed in Maple. Please embed the actual Maple code, show every command you run, and annotate it so that another student could follow the logic. Throughout both parts include equations in symbolic form before substituting numbers, define each symbo...

I am looking for STEM experts to help with my tasks by creating and evaluating high-quality problems and solutions. What you’ll do: - Create challenging questions in your field (Math / Physics/ Computer Science / Physics) - Write clear, step-by-step solutions - Review and evaluate AI-generated answers - Provide simple feedback and scoring (rubrics) Requirements: - Strong background in a STEM field - Good problem-solving and explanation skills - Strong English reading & writing (speaking not mandatory) - Detail-oriented Nice to have: - Experience with AI tools (ChatGPT, etc.) - Teaching or technical writing experience Details: - Remote, flexible work - Ongoing project (task-based) - Payment based on quality/experience

I am planning to set up a manufacturing training institute focused on CNC machining, fabrication, and industrial skills. We already have VMC and Turning Centre machines available for training. I am looking for an expert who can design a complete industry-oriented training program including: Course structure (CNC, fabrication, maintenance, quality) Practical-focused curriculum Training schedule and module breakdown Assessment and certification system The goal is to create job-ready technicians with hands-on skills. Please share your relevant experience in industrial training or vocational course design.

I need an experienced marine engineer to maintain passenger boats. The work will primarily involve the engine room and electrical systems. Key tasks include: - Overhauling the engine - Conducting routine inspections - Replacing necessary components Ideal skills and experience: - Background in marine engineering - Experience with passenger boats - Strong problem-solving skills - Ability to work on electrical systems Please provide a your resume by mail.

I’m building a dynamic model in Aspen HYSYS and need a sharp second set of eyes to get the simulation fully set-up and running smoothly. The core flowsheet is drafted, yet several unit operations still require proper dynamic parameters, controller configuration and convergence tuning. I’d like you to jump in, review what’s there, finish the remaining specifications and make sure the case transitions cleanly from steady-state to dynamic mode without warnings or calculation stalls. To keep things efficient, please tell me about your direct, hands-on experience with Aspen HYSYS dynamic simulations—years of use, the kinds of processes you’ve modelled, and any special areas of expertise (e.g. columns, compressors, flare systems). No need for lengthy proposals; a c...

I want to bring a fresh, fruit-forward hookah flavor to market that pairs a bright fruity base with a distinctive maple twist. I need an experienced flavor chemist or product developer who understands the specific requirements of shisha tobacco or herbal molasses—including heat stability, glycerin/propylene glycol carriers, and the way flavor notes evolve during a session. What I already know • The profile must read unmistakably “fruity” on the first inhale. • A natural-tasting maple accent is essential; it should linger without overpowering the fruit. • Final aroma must stay clean and pleasant after extended heating. What I need from you 1. A full formulation: ingredient list with precise percentages, recommended suppliers, and compliance notes f...

I need an experienced marine engineer to maintain passenger boats. The work will primarily involve the engine room and electrical systems. Key tasks include: - Overhauling the engine - Conducting routine inspections - Replacing necessary components Ideal skills and experience: - Background in marine engineering - Experience with passenger boats - Strong problem-solving skills - Ability to work on electrical systems Please provide a your resume by mail.

I'm in need of a seasoned civil engineer to conduct a comprehensive settlement analysis for my project. The analysis is crucial as we're dealing with recycled concrete aggregate, which presents unique challenges. Ideal Candidate: - Extensive experience in conducting settlement analyses - Proficiency in understanding and interpreting data from recycled concrete aggregate - Strong background in civil engineering with a focus on soil settlement - Ability to provide clear and concise reports

I have an existing bubble-forming base (≈ 85-90 % distilled water, 3-5 % non-ionic surfactant, 5-10 % glycerin, 1-3 % propylene glycol plus a trace dye) and now need it engineered into a reliable spray that turns vivid green the moment it contacts natural gas, yet still produces stable, highly visible bubbles. The solution must work in both indoor and outdoor settings without leaving permanent stains or hazardous residues. Here is what I need from you: • Refine the percentages, choose compatible food-grade or industrial-grade ingredients, and specify any additives or microencapsulated indicators required for a sharp green shift in the presence of methane while remaining inert to air. • Provide a concise, repeatable lab-scale procedure (mixing order, temperatures, agitati...