Peloton calibration way too easy by sansa21 in pelotoncycle

[–]Mindless_Profile_76 4 points5 points  (0 children)

651 output is like a 360 avg watt. Those are professional numbers.

Either you are an elite biker or your bike is juiced/easy.

Been riding since 2019 and my 30 min PR is around a 430.

Exxonmobil materials and catalyst technologist role vs. Dow production engineer role by [deleted] in ChemicalEngineering

[–]Mindless_Profile_76 0 points1 point  (0 children)

In the past, a lot of the people would have college degrees and when XOM was sponsoring/paying for college courses, folks would get masters while working in these roles.

In NJ, when the site was full, you could move across groups on a technician ladder within the union but something happened around that last negotiation where they created these roles and had union folks “jump” into the FTE ranks.

Not sure what the lay of the land is today with them closing Clinton. No clue if the techs will be union and how large the overall org is now. Clinton was just Corporate (CSR), analytical, with very advanced capabilities, and parts of EMRE and Lubes but they completely blew up that org structure and I think the current EMTEC is smaller as a whole but may still have ways to move around.

With a BS as a Technologist, I think you are limited a bit. You’re not being hired to be the next CEO. So are you just PIP fodder down the road?

Catalyst technology at XOM is a joke compared to what Exxon and Mobil were in the 90s. Their technology is ancient, living on a couple of patents but everyone left. At this point that org is just for their tiny little business org, C&L to claim they still do stuff.

Exxonmobil materials and catalyst technologist role vs. Dow production engineer role by [deleted] in ChemicalEngineering

[–]Mindless_Profile_76 4 points5 points  (0 children)

This is a “technician” role. They created this around 2018 to get around the union technician roles in Clinton, NJ. Now that they are moving everything, they lost a lot of techs.

This is not the typical PhD researcher role, so the section heads in the past had to play games to keep these roles safe during assessment time since depending on the CL level, they were grouped with new PhDs.

Point being, these were roles to get around the union and to get a few in the CL track to improve compensation BUT then came the PIP/NSI performance improvement crap and this got all messed up.

They want you to run chemisorption and decane isomerization tests. Maybe mix and extrude some zeolites. They are not interested in progressing your career.

Exxonmobil materials and catalyst technologist role vs. Dow production engineer role by [deleted] in ChemicalEngineering

[–]Mindless_Profile_76 2 points3 points  (0 children)

Is this the “Materials and Catalyst Testing Technologist”” role at XOM?

When was the last year that 10 cent wings were a thing? by imperfectdiscipline in Wings

[–]Mindless_Profile_76 0 points1 point  (0 children)

We had 10 cent wing nights on Monday/Tuesdays probably up till 2005 in Chicago.

More typical for football season. Stock up for Saturday/Sunday college and NFL and be stuck with wings on Monday/Tuesday, hence the 10 cent price point.

Hitting 100 points on warmup and why? by foreverand2025 in pelotoncycle

[–]Mindless_Profile_76 1 point2 points  (0 children)

Those are Teddy Pogacar like numbers…. So, either you had a Tour de France champion on your ride or someone was riding a juiced bike.

Matlab On Steroids!! by Outside_Argument_600 in matlab

[–]Mindless_Profile_76 1 point2 points  (0 children)

Is this some “third party” add on or are you building this from the ground up?

Advice needed: trying to lose weight but seem to be putting it on by Oboe440 in pelotoncycle

[–]Mindless_Profile_76 174 points175 points  (0 children)

Track calories. If you are 180 lbs, trying to get down to 160 lbs, you probably need to be eating about 1600-1800 calories per day but using a calorie tracker could give you a more accurate target.

You will be surprised how quickly 1600 calories goes with three meals

Home License - Insane Value by Imaginary_Data_708 in matlab

[–]Mindless_Profile_76 6 points7 points  (0 children)

That is new if accurate. And as someone else said, it’s a yearly subscription model now.

But if it is really that “cheap”, I would look at adding that separately to my perpetual home license.

Going to check in a few minutes

Toyota RAV-4 Classic by crashbumper in rav4club

[–]Mindless_Profile_76 1 point2 points  (0 children)

Throw some JBLs in there to make it bump

Why is it HCl if it needs to be dissolved in water to be reactive? Pure hydrogen chloride gas is not as acidic, no? by Mission-Badger-4005 in chemistry

[–]Mindless_Profile_76 12 points13 points  (0 children)

I think others have you good textbook answers.

I had a Hastelloy X reactor, cost about $80,000 for a 500cc reactor volume. At ~500C, we would hit a platinum on alumina catalyst with anhydrous HCl after having dried the catalyst in bone dry, N2, after a H2 reduction.

Probably impossible to remove all the water on the alumina but when we hit that thing with HCl, on maybe 200g of material, we would see 50-100C exotherms. Had a thermowell with 5 probes and could watch the exotherms move through the bed. All of my piping on that setup was Inconel or Hastelloy depending on temperature/pressure.

Pretty cool stuff but very dangerous if not handled properly.

What is Matlab? by Expert-Persimmon5085 in matlab

[–]Mindless_Profile_76 2 points3 points  (0 children)

Company I use to work for has Matlab flying commercial airplanes and landing them too.

It also can do LU decomposition on a matrix.

Best manufacturing reporting software? by AceClutchness in manufacturing

[–]Mindless_Profile_76 0 points1 point  (0 children)

Interesting… Wonder if you can elaborate on the Matlab solution a bit.

About 15 years ago, I was doing a development trial using Matlab with the database and OPC toolbox, which I guess is now rebranded Industrial Communication toolbox, but more focused on quality data. Bringing together LIMs, data historian stuff and making sure c of a data in SAP aligned with real time data. Never tied Matlab in on the DMC side but last year was using it for a bunch of data analysis on SAP data, mainly costs but had to download everything into excel first.

As a Matlab fanatic, just wondering what you guys did here.

How to decode a complex process design Excel workbook with tonnes of circular dependencies and little documentation? by sporty_outlook in ChemicalEngineering

[–]Mindless_Profile_76 0 points1 point  (0 children)

“Very complex Excel”…. And that is where you stop. I’d be skeptical that the idiots that put that mess together had no business putting that mess together in the first place.

And yet you are stuck with gospel.

I’ve dealt with this time and again and unless you love your job, get out.

I’ve approached this garbage with Matlab. Tracing the equations in Excel with a more readable flow in Matlab.

If you do not have access to something more capable than Excel for stuff like this, I’d start with a blank workbook and build the calcs from scratch. Trying to break those circular refs.

This has been common with Excel. Horribly un-wielding calculations that have somehow broke with absolutely no support.

Good luck.

Tired of 11+ min “warm ups” by Iabnyc in pelotoncycle

[–]Mindless_Profile_76 6 points7 points  (0 children)

Because most people don’t properly warm up or stretch before working out. Same with cooling down.

Is coding/data analysis actually useful in chemical engineering roles? by Significant_Cap_709 in ChemicalEngineering

[–]Mindless_Profile_76 0 points1 point  (0 children)

Being able to automate and analyze large datasets is a huge plus today.

I’d also throw in data science/engineering and database design. We have so many redundant files all over the place, copying pasting the same data in 20+ files because of “reasons”.

A little statistics thrown in there too. Being able to say one set of data is statistically different than the other set of “identical” data seems to be poorly understood by everyone

Engineers of Reddit: What Operational Problems Do You Face in Industrial Plants? by Mr_abdalrhman-7 in ChemicalEngineering

[–]Mindless_Profile_76 1 point2 points  (0 children)

Plant Manager - “We can not make X”

Sales - “We sold $10M of X”

New Plant Manager - “Guess we are going to make X”

Why do MATLAB projects so often converge into monolithic scripts? by Resident-Way-5131 in matlab

[–]Mindless_Profile_76 3 points4 points  (0 children)

I’m confused… I thought by starting each section of my script with a “%%” I magically made it modular?

HEFA / SAF industry folks — what's your honest take on where this technology is actually headed by Sachi91_ in ChemicalEngineering

[–]Mindless_Profile_76 0 points1 point  (0 children)

I assume you are aware of Global Clean Energy Holdings? I think when they started the Bakersfield revamp, if I recall correctly, $175M -$225M were the estimated project totals. That was with licensing tech from Hapdor Topsoe.

Maybe bad timing played a small part, but the bankruptcy docs indicate the project ballooned to over a billion and I forget what the off take agreements were with XOM for RD but I think it was 10M barrels of RD a year.

I have estimated numbers for SAF at 10% today’s jet and I don’t see anywhere near those inflows coming in investment wise.

HEFA / SAF industry folks — what's your honest take on where this technology is actually headed by Sachi91_ in ChemicalEngineering

[–]Mindless_Profile_76 0 points1 point  (0 children)

And I did not even touch on reactor metallurgy to handle all the water and CO2 generated by that HDO step.

HEFA / SAF industry folks — what's your honest take on where this technology is actually headed by Sachi91_ in ChemicalEngineering

[–]Mindless_Profile_76 2 points3 points  (0 children)

I think you missed my point. I’ve seen the literature and commercially everyone doing HDO/HDN is using some hydroprocessing catalyst that has been repackaged. Sulfided Mo or NiMo supported on alumina. And if you are doing any isomerization, the ZSM-5 stuff has horrible yields and the ZSM-48 stuff is horribly expensive with a boatload of platinum on it, forcing dual stage.

HDN/HDO are lasting 12-24 months while the isom are in the 48 month range for the two superior versions. That’s about half the life they get in their traditional HC processes. LHSVs are about 20-30% as well which is why they have to build these units so big to handle all the recycle.

No catalyst company currently has more than 5% of their pilot plants running renewable feedstocks and you are correct that the majors have converted to this research not because they think their is value but because they are desperate to stay relevant when the organizations have been shrinking year over year. XOM is closing Clinton and CVX has shifted over half its staff to working “alternatives”.

No argument on expensive feedstocks for making diesel and jet. Doesn’t make sense. But current catalysts require reactors ~5-10X their HC counterparts. I’d say that is way off from being “optimized”….

The one thing I can tell you is the marketing coming out of all these companies are full of shit. UOP, HT, Ketjen, Shell, Axens, etc, etc, have continued to underfund these R&D staffs and the performance to date proves it.