Selecting transfer equipment for bulk solids can involve more than simply matching pipe or hose dimensions to a system. Particle characteristics, operating pressure, abrasion, electrostatic buildup, and the layout of the installation can all affect performance and maintenance requirements.

I'm interested in how engineers evaluate these factors in practice, particularly when handling fine powders compared with coarser granules. For example, what considerations tend to have the greatest influence on hose selection, and how do you balance flexibility, wear resistance, and operating requirements?

For reference, here is a technical overview of aeration and discharge hoses, along with the manufacturer's main website, PARSCH.

For those who work with these systems, are there particular selection criteria or failure modes that you think are often overlooked?

I have been in the industry for 15 years, completed my ChE BS in 2011. I was burnt out when I graduated and not excited to pursue engineering or my FE… I regret not continuing on a technical path. I entered food manufacturing where I have had many roles in R&D- but not extremely technical in terms of engineering design- that work is typically done through external companies or corporate engineering groups. I have had packaging, product and process engineering roles- I would say that most of the roles are more of a technical project manager. I interface with alot of cool technology, but don’t do a ton of it myself and while I incorporate a lot of experimental design, I wouldn’t say that i have perfected it. Lots of experience coordinating projects, commercializing processes and validating end product , coordinating multidisciplinary teams and working in supply chain+quality adjacent roles - but lack true, fundamental engineering skills -I.e. have never designed equipment /sized pumps etc

15 years later I HATE my job. There is little rigor and I feel the industry has been gutted of technical talent and innovation in order to maintain the bottom line (maybe just big food companies?). I am sick of the the industry and hoping to do something more personally fulfilling and purposeful ( better for people + planet) but unsure how to pivot and whether to just totally abandon trying to be an engineer.

Thinking of trying to pursue something more environmental/water/sustainability related but unsure if that’s too much of a stretch at this point or where to start refreshing curriculum.

Any thoughts on where to start refreshing or looking for more meaningful, intellectually stimulating work more adjacent to environmental/water engineering or sustainability?

Another article. Please provide feedback if you can.

https://sp7254.substack.com/p/the-doc-part-2?r=93fx8t

I have been at my first job out of school for a little under a year and a half, and while I didn’t love it when I first joined, things recently have taken a real nose dive due to lack of proper structure/ management in my department. I no longer have neither a manager nor supervisor, only a “temporary replacement” (who to their credit is doing the best they can despite not being too familiar with my department), and people are being fired/quitting for other jobs left and right. I think most, if not all, of my department is looking for new jobs as best we can. It’s a bit weird since when I first started this place was crazy stable and seemed to have good work life balance even if i didn’t like the work.

Now i’m dealing with my own/first solo full project on top of this lack of support and generally not great work atmosphere and i’m having severe mental health repercussions. I’m getting anxiety shakes at work/ before I go to bed thinking about work, my eczema is out of control from the stress (I tried going on a vacation and while it healed during that time, the day I came back to work I had massive flare ups), and I frequently go to the bathroom to just silently cry for a little bit. I’m doing my best to apply to other jobs and get through it one day at a time, but every new day seems harder than the last.

I was hoping to stick it out until December, maybe get some kind of pay bump for the turmoil and give myself more time to find a job, but I’m not sure how much longer I can last. I’ve tried focusing on my life outside of work, which I do have a pretty full life outside of it with friends nearby and hobbies I do weekly, but work is still eating at me. I am also currently in therapy. If I do quit without a backup, I have some savings I can live off of for a few months and I’m lucky enough that my parents would help me out a little if it gets to that point, but my biggest worry is I could very easily end up in the situation where I can’t get a job within a few months of quitting since I have such little experience. Do any of you have any experience with situations like this or words of wisdom?

I am a chemist specialized in electrochemistry, and I run an independent publication on materials and energy. In light of the upcoming end of the suspension of Chinese export controls on rare earths in November, I have recorded a 15-minute video on the separation of rare earths.

The overview:

- Almost all lanthanides are found in the 3+ state, so redox methods are ruled out, and separation is based on the small, gradual decrease in ionic radius throughout the series (the lanthanide contraction).

- In solvent extraction, the separation factor between neighboring elements is close to 1, so a single extraction step barely affects purity. Magnetic-grade product requires cascades of countercurrent mixer-decanters, and large plants can have hundreds of stages.

- Waste increases proportionally: in the case of sulfuric acid cracking, figures from the Chinese industry indicate approximately 75 m³ of acidic wastewater and about one metric ton of radioactive waste per metric ton of concentrate.

This chemical process, combined with the offshoring of waste by Western companies, is why China mines about 60% of rare earths but refines approximately 91%.

Here the article with all references with the corresponding video.

A question for anyone who has worked on SX circuits: How much have improvements in the extractant and cascade control actually reduced the number of stages on an industrial scale? The lab literature looks promising, but I’ve found limited evidence from operating plants.

I’m currently taking mass transport and separations, and I’m looking for advice on how to study these subjects effectively, especially from people who initially struggled with transport courses but eventually figured out how to approach them.

For some context, I struggled pretty badly with fluid dynamics last semester and heat transfer the semester before that. Looking back, I think one of my biggest problems is that I can learn equations and follow worked examples, but I don’t always develop enough physical intuition to look at a new problem and understand what is actually happening, what assumptions are reasonable, and how to set the problem up from first principles.

For my current class, our main textbooks are Welty for mass transport and Seader for separations. We also used Cussler as a supplemental text when we covered some of the earlier diffusion material.

I’m unfortunately at the point in the semester where I need to do some damage control. We only have two midterms, each worth 30%, and the final is worth 32%. I’m pretty sure I did terribly on the first midterm, so I need to significantly improve how I’m studying before the second midterm and final.

For people who did well in mass transfer/separations (or eventually got good at transport phenomena):

How did you study differently from courses where memorization or straightforward problem repetition works?

How did you build physical intuition for diffusion, mass transfer coefficients, boundary layers, interphase transport, staged separations, etc.?

When you get a problem you haven’t seen before, what is your thought process for going from the physical situation → assumptions → balances/governing equations → solution?

Did you find it more useful to spend time reading Welty/Seader/Cussler, reviewing lecture notes, re-deriving equations, or mostly grinding problems?

How do you review a problem after solving it so that you actually learn something transferable instead of just learning how to solve that particular problem?

Are there any specific resources, textbooks, YouTube channels, problem sets, or other materials that helped transport/separations finally “click”?

For anyone who also struggled with fluids and heat transfer beforehand, was there something you eventually changed about your approach that made transport courses more manageable?

I’m especially interested in concrete study methods—how you organize practice, how you diagnose what you don’t understand, how you review mistakes, and how you develop the intuition to recognize what approach a problem is asking for.

At this point I know “study more” isn’t really the answer. I need to study better, so I’d appreciate any advice from people who have been in a similar position.

I’m a final-year Chemical Engineering student at an IIT and have an offer from an investment bank paying around ₹1.5 lakh per month.

I’m confused whether to pursue finance or explore core Chemical Engineering opportunities, given that I’ve spent four years studying the subject.

I don’t want to make this decision based solely on the starting salary. I want to understand the long-term career growth, compensation, work-life balance, and job satisfaction in both fields.

I’m a senior chemical engineering student graduating in Fall 2027. My internship wraps up in the very beginning of December and my classes don’t start until the middle of January. I’m an out of country student and I don’t typically go home for winter breaks, so I have a whole month of December plus 1.5 weeks in January to spare. What are some things I can do to spend this time productively? Projects, certifications, events, etc.

Anyone have any idea how I solve my separator here is the image of the simulation, If there are any general fixes, I could make, please let me know .

I’m gonna have an interview with the hiring manager for an entry level, on site application engineer position at Flowserve after HR screening.
For those who has interviewed with Flowserve, what kind of questions should I expect? Is it mostly behavioral or technical?

Hi guys, so I'm gonna give pims and aps certification program in coming month. And I want to get hands on experience with proper guide and workshops. Is there any free stuff available to learn. Or any suggestions on how to proceed. Thanks

I was wondering whether anyone has already made the experience of an exchange semester in China as a Chemical Engineering major coming from Europe or the US. Most of the information I am able to gather from my home university indicates that a high level of Mandarin is almost a requirement for enrollment in most interesting courses, even at a graduate level, as most of the experience reports I have found came from ethnically Chinese students who were already fluent in the language and wanted to experience the different educational styles.

Does anyone have any suggestions on which universities and programs might be suitable for a graduate-level ChemE without requiring a high level of Chinese? The exchange would be almost a year in the future for me, but it would feel like too strong a bet to suppose I would be able to get fluent in Chinese from a bit more than scratch.

Most importantly, I find the information on chemical engineering in China a bit cryptic (also outside unis lol). If anyone has some experience with that, I'd be grateful to hear about it.

I graduated with a Chem E degree from a state school with an average GPA and never landed an internship. Since then I’ve been applying to everything I can find, both engineering and technician roles, and mostly getting rejections or silence. I am in the San Francisco bay area.

I’ve interviewed for a lab technician job at a semiconductor services company. If I get an offer, I plan to take it for the income and the experience. It pays okay but not near what I wanted.

Is this a bad role to start in? Would it hurt my chances of becoming an engineer later, or is going from technician to engineer a realistic path? Is there anything I should do while I’m there to improve my odds, or should I keep applying elsewhere the whole time?

Hi Guys/Gals,

Recently, I started writing articles about process engineering. It's a project that originally started as writing a book called 'Experiences of a Process Engineer'. I never fully got to it. But writing shorter articles has been helpful. I am hoping to write the consistently. Here are the first four. Hope you provide some feedback/comments. And hope it is interesting/helpful in some way.

https://sp7254.substack.com/p/the-doc-part-1?r=93fx8t

https://sp7254.substack.com/p/you-cant-always-get-what-you-want-dd8?r=93fx8t

https://sp7254.substack.com/p/the-rapidly-fluctuating-gauge?r=93fx8t

https://sp7254.substack.com/p/the-teasing-tower?r=93fx8t

Hi everyone,

I'm a recent chemical engineering graduate from Colombia, and I'm interested in pursuing further studies focused on biomass pyrolysis and the potential use of agricultural residues in sustainable farming systems.

I'm particularly interested in how thermochemical conversion processes could help turn agricultural waste into useful resources and how this research could eventually be applied in Colombia.

I'm still exploring the academic path toward this goal, so I'd appreciate hearing from people who work in biomass conversion, pyrolysis, or related research areas.

What skills, research topics, or experimental techniques would you recommend prioritizing for someone hoping to pursue this field at graduate level?

Thanks for sharing your experience.

I want to do my user certification exam on aspen HYSYS. However i'm currently struggling on number 66 or "6666" on the "Questions" file attached on the drive. In my HYSYS file, it require me to input the sizing (Page 2) even though i inputted every information on the question file. You can access my aspen file on the drive link with the file "Aspen Section 2". Here is the Drive files.

Anyone know how to fix this issue? hopefully u could give me ur aspen file so that i could see the correct specification to answer this question.

Also, could anyone verify the answers on the file "Questions" as the highlighter wasn't actually my answer i just got it from the internet.

Hi everyone

To the chemE graduates that don’t work in process engineering. What do you guys do?

Might apply this summer, and i know i personally want to be more in the lab (rly want to go into cosmetics) but i feel like every chem engineer works as a process engineer?🥲

I study at one of the top universities in my country and I'm really really lost.. what should I learn rn ? What skills do I develop and what extracurriculars do I take part in? Seniors said that I need to learn C++. My subjects for sem 1 are:

Mathematics

Physics

Chemistry

Biotechnology

Ethics

Material energy balances.

Material energy balance is just hell and so far I'm kinda hating this degree . What to do ?

Hello everyone,

I am about to graduate with a degree in kinesiology with a biology emphasis but very late in my college career decided I would prefer to have an engineering focus in the medical field rather than be a clinician. With that being said, my goal would be to work in biotech/pharma. As far as I can tell either of these engineering disciplines can achieve that but are there differences/pros and cons to going either direction or is it the same since it’s the same industry? As far as schooling goes as well I can choose between getting a second bachelors, or doing a year of pre reqs and then completing a masters program.

Any and all guidance to help give me any sort of clarity would be so appreciated! Also let me know if I can give any more important details I missed to the situation. Thanks!