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chemical engineers are bad at chemistry and chemists are bad at math, and the gap between those sentences is where good ideas go to die. our degree is calculations, balances and economics, a chain of unit conversions until it turns into dollars per kilogram. theirs is memorization, procedure and experimentation. neither is wrong. the software in between takes a year to learn, so the idea stalls. comment GAP and I’ll DM you the one-pager I wrote for chemists. #chemistry #chemicalengineering #chemist #engineering #scaleup
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nathanrare
chemical engineers are bad at chemistry and chemists are bad at math, and the gap between those sentences is where good ideas go to die. our degree is calculations, balances and economics, a chain of unit conversions until it turns into dollars per kilogram. theirs is memorization, procedure and experimentation. neither is wrong. the software in between takes a year to learn, so the idea stalls. comment GAP and I’ll DM you the one-pager I wrote for chemists. #chemistry #chemicalengineering #chemist #engineering #scaleup
two identical pumps in parallel add their flows at every head, but the pipe curve does not move and it is steep, so in one worked case the second pump added 39% on a steep system and 75% on a flat one. never 100. and if the running pump’s outlet pressure is higher than what the spare can push at zero flow, the spare’s check valve never opens: it spins, draws power and moves nothing. that is why plants run two half-size pumps plus a spare. my fourth-year course sized a 40 bar duty three ways: one pump 43.7 bar, three in series 39.3 and off spec, two at 50% plus a spare. comment PARALLEL for the graph. have you ever watched a spare do nothing? #chemicalengineering #pumps #engineering #processengineering
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two identical pumps in parallel add their flows at every head, but the pipe curve does not move and it is steep, so in one worked case the second pump added 39% on a steep system and 75% on a flat one. never 100. and if the running pump’s outlet pressure is higher than what the spare can push at zero flow, the spare’s check valve never opens: it spins, draws power and moves nothing. that is why plants run two half-size pumps plus a spare. my fourth-year course sized a 40 bar duty three ways: one pump 43.7 bar, three in series 39.3 and off spec, two at 50% plus a spare. comment PARALLEL for the graph. have you ever watched a spare do nothing? #chemicalengineering #pumps #engineering #processengineering
you cannot distill past 96%. vapour is richer in the thing that boils easier, so a column is the same trick stacked a few dozen times, until ethanol and water reach the point where vapour and liquid are the same mix: 95.6% by weight. one more stage changes nothing. the mix boils at 78.2 °C, below pure ethanol at 78.4, so a little water makes ethanol boil sooner. that’s the azeotrope. three ways past it: an entrainer, a molecular sieve, or a heavy solvent, and none is a taller column. comment ETHANOL for the columns page. which one does your plant use? #chemicalengineering #distillation #chemistry #processengineering
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you cannot distill past 96%. vapour is richer in the thing that boils easier, so a column is the same trick stacked a few dozen times, until ethanol and water reach the point where vapour and liquid are the same mix: 95.6% by weight. one more stage changes nothing. the mix boils at 78.2 °C, below pure ethanol at 78.4, so a little water makes ethanol boil sooner. that’s the azeotrope. three ways past it: an entrainer, a molecular sieve, or a heavy solvent, and none is a taller column. comment ETHANOL for the columns page. which one does your plant use? #chemicalengineering #distillation #chemistry #processengineering
chemical engineers are bad at chemistry, part two: the one thing we do better than anyone. we draw a box around anything, a reactor, a city, your body, and we count: in minus out equals accumulation. a bathtub at 12 litres a minute in and 10 out rises 2 a minute and you know when it overflows without understanding water. draw the box around a whole plant and the sum has to be zero, and when it is not, something is leaking, burning or walking out the gate, and the balance finds it first. at scale this is the first thing that breaks. comment BOX for the lesson. chemists, your turn in the comments. #chemicalengineering #chemistry #engineering #massbalance The whole-plant balance sums to zero at steady state when all mass streams are included. Burning transfers mass to products and gases; it does not destroy it. Footage: Steam from a chemical plant by 驭龙飞车手, CC BY4.0. https://commons.wikimedia.org/wiki/File:Steam_from_a_chemical_plant.webm (cropped excerpt).
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chemical engineers are bad at chemistry, part two: the one thing we do better than anyone. we draw a box around anything, a reactor, a city, your body, and we count: in minus out equals accumulation. a bathtub at 12 litres a minute in and 10 out rises 2 a minute and you know when it overflows without understanding water. draw the box around a whole plant and the sum has to be zero, and when it is not, something is leaking, burning or walking out the gate, and the balance finds it first. at scale this is the first thing that breaks. comment BOX for the lesson. chemists, your turn in the comments. #chemicalengineering #chemistry #engineering #massbalance The whole-plant balance sums to zero at steady state when all mass streams are included. Burning transfers mass to products and gases; it does not destroy it. Footage: Steam from a chemical plant by 驭龙飞车手, CC BY4.0. https://commons.wikimedia.org/wiki/File:Steam_from_a_chemical_plant.webm (cropped excerpt).
Small town. Big restlessness. I wouldn’t trade where I’m from for anywhere. #thunderbay #founder #smalltown #canada #startup
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Small town. Big restlessness. I wouldn’t trade where I’m from for anywhere. #thunderbay #founder #smalltown #canada #startup
why Aspen Plus takes longer than an internship to learn: before you can ask the simulator anything you build the world by hand, every block, every stream, every component, and the property method that quietly decides if the rest is wrong. 300 calls gave me the numbers: 17 streams one at a time, 38 components renamed by hand, 30 to 50% of simulation hours recoverable. nobody wants the thinking automated. they want the thinking. comment SETUP and I’ll DM you the three things engineers hate most. #aspenplus #chemicalengineering #processengineering #chemistry #simulation
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why Aspen Plus takes longer than an internship to learn: before you can ask the simulator anything you build the world by hand, every block, every stream, every component, and the property method that quietly decides if the rest is wrong. 300 calls gave me the numbers: 17 streams one at a time, 38 components renamed by hand, 30 to 50% of simulation hours recoverable. nobody wants the thinking automated. they want the thinking. comment SETUP and I’ll DM you the three things engineers hate most. #aspenplus #chemicalengineering #processengineering #chemistry #simulation
the pump does not decide the flow. the pipe does. a centrifugal pump has a curve, the piping has a curve, and the plant runs where they cross. throttle a valve and you burn the difference as heat; slow the pump 20% and you cut the power roughly in half, because power goes with the cube of speed. pumping is about one fifth of the world’s electricity. comment CURVE for the pump page. throttle or drive: which does your plant run? #chemicalengineering #mechanicalengineering #pumps #energy
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the pump does not decide the flow. the pipe does. a centrifugal pump has a curve, the piping has a curve, and the plant runs where they cross. throttle a valve and you burn the difference as heat; slow the pump 20% and you cut the power roughly in half, because power goes with the cube of speed. pumping is about one fifth of the world’s electricity. comment CURVE for the pump page. throttle or drive: which does your plant run? #chemicalengineering #mechanicalengineering #pumps #energy
the pump you sized does not exist. school: calculate head and flow, size the ideal pump, move on. the plant: open a catalogue, pick the curve that covers your point with margin, accept it’s slightly wrong everywhere, or pay more and wait longer for a custom unit. and the price isn’t on the page. comment PUMP and I’ll DM you the one-page version. #chemicalengineering #processengineering #engineeringstudent #capstone #mechanicalengineering
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the pump you sized does not exist. school: calculate head and flow, size the ideal pump, move on. the plant: open a catalogue, pick the curve that covers your point with margin, accept it’s slightly wrong everywhere, or pay more and wait longer for a custom unit. and the price isn’t on the page. comment PUMP and I’ll DM you the one-page version. #chemicalengineering #processengineering #engineeringstudent #capstone #mechanicalengineering
every relief valve in a plant opens into one pipe: the relief header, through a drum that knocks out liquid, a water seal so air cannot creep back, and up a stack where pilot flames have burned since the day the plant started. a flame the size of a house on a trip or a start-up is pressure going somewhere safe. it never goes out: about 70 cubic feet of gas an hour per pilot, a purge up the stack at all times because a cold flare full of air is a bomb, no more than five minutes of smoke in two hours, and a height set by the heat allowed on the ground where people work, about 1.5 kW per square metre. in 2005 a Texas refinery overfilled a column into a 1950s blowdown drum that vented straight to the sky instead of a flare; 15 died and 180 were hurt. comment FLARE for the page. which flare do you drive past? #chemicalengineering #refinery #processsafety #engineering
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every relief valve in a plant opens into one pipe: the relief header, through a drum that knocks out liquid, a water seal so air cannot creep back, and up a stack where pilot flames have burned since the day the plant started. a flame the size of a house on a trip or a start-up is pressure going somewhere safe. it never goes out: about 70 cubic feet of gas an hour per pilot, a purge up the stack at all times because a cold flare full of air is a bomb, no more than five minutes of smoke in two hours, and a height set by the heat allowed on the ground where people work, about 1.5 kW per square metre. in 2005 a Texas refinery overfilled a column into a 1950s blowdown drum that vented straight to the sky instead of a flare; 15 died and 180 were hurt. comment FLARE for the page. which flare do you drive past? #chemicalengineering #refinery #processsafety #engineering
the pump that boils water at room temperature. at the eye of the impeller the pressure drops, and below about 2 kPa water boils cold. the bubbles collapse on the high-pressure side and hammer the metal until it looks like a sponge. and the suction head your vendor calls “required” is measured where the pump has already lost 3% of its head. required is not safe. comment CAVITATION for the pump page. what margin does your plant use? #chemicalengineering #mechanicalengineering #pumps #engineeringstudent
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the pump that boils water at room temperature. at the eye of the impeller the pressure drops, and below about 2 kPa water boils cold. the bubbles collapse on the high-pressure side and hammer the metal until it looks like a sponge. and the suction head your vendor calls “required” is measured where the pump has already lost 3% of its head. required is not safe. comment CAVITATION for the pump page. what margin does your plant use? #chemicalengineering #mechanicalengineering #pumps #engineeringstudent
The same recipe can make a new impurity in a bigger tank. Slow additions, local hot spots and uneven mixing can give a side reaction time to run. For the example of a drug taken at half a gram a day, an impurity above 0.10% needs identification; above 0.15%, it needs safety data. Any depicted process times are illustrative. Comment IMPURITY and I’ll send you the page. #ChemicalEngineering #Pharma #ProcessChemistry #ScaleUp Music: “Industrial Cinematic” by Kevin MacLeod (incompetech.com), CC BY 4.0: https://creativecommons.org/licenses/by/4.0/. Excerpt trimmed, level-adjusted and mixed under narration.
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The same recipe can make a new impurity in a bigger tank. Slow additions, local hot spots and uneven mixing can give a side reaction time to run. For the example of a drug taken at half a gram a day, an impurity above 0.10% needs identification; above 0.15%, it needs safety data. Any depicted process times are illustrative. Comment IMPURITY and I’ll send you the page. #ChemicalEngineering #Pharma #ProcessChemistry #ScaleUp Music: “Industrial Cinematic” by Kevin MacLeod (incompetech.com), CC BY 4.0: https://creativecommons.org/licenses/by/4.0/. Excerpt trimmed, level-adjusted and mixed under narration.
a drum is not storage, it is time: the liquid level absorbs the mismatch between flow in and flow out for long enough that a controller can act, so you size it for minutes, about 5 half-full for a reflux drum, 5 to 10 if it feeds another tower. draw it as four bands: dead volume under the outlet nozzle, holdup, surge where the alarms live, and 20 to 30% headspace where vapour separates and the high-high trip has room to shut a valve. propane tanks stop at 80% for the same reason. in 2005 a depot north of London had a gauge stick at 03:05 and read steady while over 250,000 litres went over the top; the switch that should have caught it needed a padlock nobody knew about. comment LEVEL for the four-band page. what does your plant do at high-high? #chemicalengineering #processsafety #engineering
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a drum is not storage, it is time: the liquid level absorbs the mismatch between flow in and flow out for long enough that a controller can act, so you size it for minutes, about 5 half-full for a reflux drum, 5 to 10 if it feeds another tower. draw it as four bands: dead volume under the outlet nozzle, holdup, surge where the alarms live, and 20 to 30% headspace where vapour separates and the high-high trip has room to shut a valve. propane tanks stop at 80% for the same reason. in 2005 a depot north of London had a gauge stick at 03:05 and read steady while over 250,000 litres went over the top; the switch that should have caught it needed a padlock nobody knew about. comment LEVEL for the four-band page. what does your plant do at high-high? #chemicalengineering #processsafety #engineering
Does @nrubuilder need some glasses?
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Does @nrubuilder need some glasses?
why every big compressor is three small ones. squeeze air from 20 °C to three times the pressure and it leaves at about 130 °C; do it again and you’re past 250. the machines are built to a standard that caps discharge near 150, so you compress, cool, compress. hydrogen from 1 bar to 200 bar takes eight stages. I built a five-stage train in Reflux Student from one sentence and it drew the P&ID. comment STAGES for the page. how many stages is the biggest train you’ve worked on? #chemicalengineering #mechanicalengineering #compressors #hydrogen
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why every big compressor is three small ones. squeeze air from 20 °C to three times the pressure and it leaves at about 130 °C; do it again and you’re past 250. the machines are built to a standard that caps discharge near 150, so you compress, cool, compress. hydrogen from 1 bar to 200 bar takes eight stages. I built a five-stage train in Reflux Student from one sentence and it drew the P&ID. comment STAGES for the page. how many stages is the biggest train you’ve worked on? #chemicalengineering #mechanicalengineering #compressors #hydrogen
There’s no undo button on a concrete foundation. Could we build factories the way we build software: describe what we want, test a design, improve it, then build? I’m a chemical engineer taking a shot at that with RARE Labs. We’re starting with AI software that works with engineering simulators to help teams decide what to build and test. The long-term goal is robots building pilot plants. If your team is scaling chemistry, comment WAITLIST and I’ll send you the signup link. Send this to the engineer who has to live with the equipment decision. @stanlaunchpad #StanLaunchpad #ChemicalEngineering
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There’s no undo button on a concrete foundation. Could we build factories the way we build software: describe what we want, test a design, improve it, then build? I’m a chemical engineer taking a shot at that with RARE Labs. We’re starting with AI software that works with engineering simulators to help teams decide what to build and test. The long-term goal is robots building pilot plants. If your team is scaling chemistry, comment WAITLIST and I’ll send you the signup link. Send this to the engineer who has to live with the equipment decision. @stanlaunchpad #StanLaunchpad #ChemicalEngineering
two pumps in series do not give you twice the head. heads add at the same flow, so the combined curve sits twice as high, but the system curve (lift plus friction rising with flow squared) does not move, so the duty point slides out along it and lands well short of double, about 1.3x in a plain friction line. and series is fragile: in one sizing case three pumps in series made 39.3 bar against a 40 bar spec while one bigger pump made 43.7, because lose a stage and the head collapses. the second casing holds both heads, so check its rating. the pump block in a simulator returns one discharge pressure; the system curve is yours to draw. comment SERIES for the page. where does your system curve cross? #chemicalengineering #pumps #processengineering #engineering
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two pumps in series do not give you twice the head. heads add at the same flow, so the combined curve sits twice as high, but the system curve (lift plus friction rising with flow squared) does not move, so the duty point slides out along it and lands well short of double, about 1.3x in a plain friction line. and series is fragile: in one sizing case three pumps in series made 39.3 bar against a 40 bar spec while one bigger pump made 43.7, because lose a stage and the head collapses. the second casing holds both heads, so check its rating. the pump block in a simulator returns one discharge pressure; the system curve is yours to draw. comment SERIES for the page. where does your system curve cross? #chemicalengineering #pumps #processengineering #engineering
a gate valve is a plate across the bore. wide open it is a clear pipe; half open it is a thin crescent with the whole pressure drop on a knife edge, so the jet cuts the seat and the disc (wire drawing) while the disc flutters in its own wake. the control valve handbook says gates are not intended for throttling. a quick-opening shape passes about 90% of its flow by half lift, so the top half of the handwheel does almost nothing; a globe plug meters flow along a profile machined for the job, equal percentage, 50:1. a simulator’s valve block takes a coefficient and a percent open and will throttle a gate all day. comment GATE for the page. which gate in your plant has been half open for years? #chemicalengineering #valves #processengineering #engineering
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a gate valve is a plate across the bore. wide open it is a clear pipe; half open it is a thin crescent with the whole pressure drop on a knife edge, so the jet cuts the seat and the disc (wire drawing) while the disc flutters in its own wake. the control valve handbook says gates are not intended for throttling. a quick-opening shape passes about 90% of its flow by half lift, so the top half of the handwheel does almost nothing; a globe plug meters flow along a profile machined for the job, equal percentage, 50:1. a simulator’s valve block takes a coefficient and a percent open and will throttle a gate all day. comment GATE for the page. which gate in your plant has been half open for years? #chemicalengineering #valves #processengineering #engineering
why carbon capture plants quietly die: flue gas carries oxygen, oxygen attacks the amine, and the heat-stable salts it leaves behind can’t release CO2, corrode the steel and raise the energy bill every cycle. the models the industry runs generally don’t include any of it. one of the biggest costs of the plant isn’t on the flowsheet. comment CAPTURE and I’ll DM you the one-pager. #carboncapture #chemistry #chemicalengineering #processengineering #climatetech
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why carbon capture plants quietly die: flue gas carries oxygen, oxygen attacks the amine, and the heat-stable salts it leaves behind can’t release CO2, corrode the steel and raise the energy bill every cycle. the models the industry runs generally don’t include any of it. one of the biggest costs of the plant isn’t on the flowsheet. comment CAPTURE and I’ll DM you the one-pager. #carboncapture #chemistry #chemicalengineering #processengineering #climatetech
forever chemicals are an engineering problem before they’re a chemistry problem. the limit is 4 parts per trillion, one drop in five Olympic pools. find them, pull them out, destroy them without a furnace, at plant scale. and the simulators have no number for the last part. #pfas #chemistry #chemicalengineering #water #environment
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forever chemicals are an engineering problem before they’re a chemistry problem. the limit is 4 parts per trillion, one drop in five Olympic pools. find them, pull them out, destroy them without a furnace, at plant scale. and the simulators have no number for the last part. #pfas #chemistry #chemicalengineering #water #environment
Four tools worth keeping close: MolView for molecular structures, NIST WebBook for property data with sources, Cantera for equilibrium and kinetics, and DWSIM for process simulation. The page has a starter task for each and a pure-water sanity check. Comment TOOLS for the page. Which one is new to you? @stanlaunchpad #stanlaunchpad #chemicalengineering #freetools #processsimulation #engineering
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Four tools worth keeping close: MolView for molecular structures, NIST WebBook for property data with sources, Cantera for equilibrium and kinetics, and DWSIM for process simulation. The page has a starter task for each and a pure-water sanity check. Comment TOOLS for the page. Which one is new to you? @stanlaunchpad #stanlaunchpad #chemicalengineering #freetools #processsimulation #engineering

Nathan Ruberto (@nathanrare) Instagram Stats & Analytics

Nathan Ruberto (@nathanrare) has 12.9K Instagram followers with a 3.15% engagement rate over the past 12 months. Across 363 posts, Nathan Ruberto received 78.8K total likes and 2.68M impressions, averaging 217 likes per post. This page tracks Nathan Ruberto's performance metrics, top content, and engagement trends — updated daily. To benchmark @nathanrare against other accounts, use Socialpruf's Instagram competitor analysis tool.

Nathan Ruberto (@nathanrare) Instagram Analytics FAQ

How many Instagram followers does Nathan Ruberto have?+
Nathan Ruberto (@nathanrare) has 12.9K Instagram followers as of November 2026.
What is Nathan Ruberto's Instagram engagement rate?+
Nathan Ruberto's Instagram engagement rate is 3.15% over the last 12 months, based on 363 posts.
How many likes does Nathan Ruberto get on Instagram?+
Nathan Ruberto received 78.8K total likes across 363 posts in the last 12 months, averaging 217 likes per post.
How many Instagram impressions does Nathan Ruberto get?+
Nathan Ruberto's Instagram content generated 2.68M total impressions over the last 12 months.
Can I compare Nathan Ruberto with other Instagram accounts?+
Yes. Add @nathanrare to a competitor set with Socialpruf's Instagram competitor analysis tool and benchmark it side by side with any other public accounts on views, engagement rate and follower growth, with history back to each account's first post.