Chemical Engineering

Chemical Engineering is the branch of engineering that deals with the technology of large-scale chemical production and the manufacture of products through chemical processes. Today, the field of chemical engineering is a diverse one, covering areas from biotechnology and nanotechnology to mineral processing.

3,807 Questions
Chemistry
Chemical Engineering
Elements and Compounds

Is gaseous sulphur monatomic or diatomic or triatomic or which?

Gaseous Sulphur Is probably S8 a unit for Rhombic sulphur and Monoclinic sulphur......

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Chemistry
Science
Chemical Engineering

What is the function of matrix phase in composites?

1. To bind the fibers together so that the applied stress is distributed among the fibers

2. To protect the surface of the fibers from being damaged

3. To separate the fibers and inhibit crack propagation

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Chemical Engineering
Technology
Gold and Precious Metals

Can you silver plate right over bronze?

I would hire someone to do it. But you should be able to as long as you clean the bronze allowing the silver to coat the bronze.

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Oil and Oil Filters
Chemical Engineering
Oil Wells and Fields

How detect gas kick in oil well?

A gas kick will cause the annular surface pressure to increase due to the reduced hydrostatic head in the annulus caused by the inflowing gas having a lower density than the displaced drilling mud. Another way to detect a kick is by an increase in mud tank volume. Formation fluids flowing into the wellbore will increase the annular flow rate while the drill pipe flow rate remains the same. This will cause a build-up of mud in the mud storage tanks.

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Chemical Engineering

What is dimensional consistency?

dimensional consistency says that in any equation the dimensions of the quantities in the rhs and lhs are same.

for example

force =mass*acceleration

force dimensions are MLT-2 : mass dimension M ;acceleration dimension LT-2 togehter the right hand side is also having MLT-2 dimension same as that of force.

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Miscellaneous
Chemistry
Chemical Engineering

Does all glass ring like crystal?

If you mean by moving your finger on the outside of a cup, then no. Only crystal glasses do that. That is false. We just experimented with all kinds of glasses, some where crystal and many were not and we were able to make all of them ring.

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Job Training and Career Qualifications
Chemistry
Chemical Engineering

Is fractional distillation a physical method?

Yes - fractional distillation is a physical method. It relies on differences in the physical properties of the components being distilled and left behind. In particular, it relies on the differeces in vapor pressures of the different components - or the fugacities if you want to get more involved in the actual thermodynamics.

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Chemical Engineering
How To

How to convert saybolt seconds furol to cst?

Kinematic viscosity can be converted from SSU to Centistokes like

νCentistokes = 0.226 νSSU - 195 /νSSU

where

νSSU < 100

νCentistokes = 0.220 νSSU - 135 /νSSU

where

νSSU > 100

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Chemistry
Engineering
Chemical Engineering

Does alumina become conductive at high temperatures?

Alumina is a good electrical insulator; at high temperatures the resistivity is smaller than the resistivity at room temperature.

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Chemistry
Chemical Engineering

Is polyethylene glycol soluble in toluene?

Yes, you can see the sigmaaldrich page

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Chemical Engineering

What is the Graetz number?

The Graetz number is {(Diameter/Length)*Reynolds#*Prandtl#}^(1/3)

It is used to characterize the thermal development of pipe flow: if the Graetz number is less than 1000, the thermal profile is fully developed.

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Chemical Engineering

Is iron durable?

pure iron rusts too rapidly and crumbles, however many iron alloys can be very durable. Iron is a pretty cool element, though, still.

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Chemistry
Chemical Engineering

What is relative rate constant?

A relative rate constant the rate at which a reaction will take place.

Ex. V = k [A][B] the constant ,k, is a constant value for the rate of the reaction in said equation.

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Chemical Engineering

Why asphalt road look like concrete?

Asphalt roads look similar in nature to concrete because both use an aggregate material consisting of rocks to make up as much as 60% of the volume of the final solid material.

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Scrapbooking
Chemistry
Chemical Engineering

What Dissolves Rubber Cement?

Finger nail polish remover. must get kind with active ingrediant "Acetone".

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Chemical Engineering

What is q line distillation?

It sounds like you are asking about calculating theoretical stages for distillation of a binary mixture using the McCabe-Thiele method, which includes calculation of the q line from the composition of the feed. The parameter q is the mole fraction of liquid in the feed and the slope of the q-line is q / (q - 1). The q line passes through the point defining the composition of the feed on the x=y line drawn on the diagram. For more details on the McCabe-Thiele method, see the attached link.

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Chemical Engineering
Geology
Rocks and Minerals

How does the rate of cooling of magma affect the crystal size and texture of igneous rock?

Slower rates of cooling will create larger crystals. Rapid cooling allows little time for element accumulation in the crystal, therefore, the crystals created will be smaller.

Larger, visible crystals in igneous rock indicate that the magma was slow cooling, usually at depth. Much smaller crystals in igneous rock indicate rapid cooling of lava, usually at or near the surface. Crystals in igneous rock will grow larger and have more time to accumulate material for their growth the more time they have at their crystallization temperature.

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Chemical Engineering
Weight and Mass

How many pounds of barite are in a sack?

100.

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Chemistry
Chemical Engineering

What is the difference between agitator and homogenizer?

agitator is a stirring machine, a homogenizer is a device that breaks structure in order to make a homogenious solution

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Chemical Engineering

What is the importance of thermodynamics in chemical engineering?

thermodynamics is quite an important subject. the innevidebilivity of the earth compund dynamics increases the chance to decrease the chance of these dynamics to become overcome by this.

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Chemical Engineering
Civil Engineering
Hydraulics

What is the Three Reservoir Problem?

This is a classic problem in hydraulic engineering. Three reservoirs are connected by pipes. All the reservoirs have surfaces at different elevations.

Given the height each reservoir and pressure loss in each leg of the pipe network, liquid will either flow into or out of each reservoir.

If you apply the Bernoulli equation from the surface of each reservoir to the pipe junction, you end up with three nonlinear equations in four unknowns (the flowrates in each leg of the piping network and the total pressure head at the junction). An additional equation is supplied by applying the Continuity Law at the pipe junction (i.e. the sum of all flowrates at the junction is zero if there is no outflow).

This now gives four equations in four unknowns; no analytical solution is possible. You can solve the equations iteratively, however, using a tool like Excel. See the spreadsheet in the related link for an example

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Physics
Chemistry
Chemical Engineering

Do you have material which have austenite micro-structure at room temperature?

No, there is not austenite around at room temperature. This gamma phase of iron alloys only appears at elevated temperatures (ball park - a bit over 700 °C). Once the alloy cools below the critical temperature, carbon diffuses and the steel takes on different characteristics -- and is given different names. It is possible to quench steel to get its metallic crystal structure to "set quickly" and bring out certain characteristics (notably hardness), but (again) we give this material a different name. To cite one characteristic of austenite, it is nonmagnetic. It is above its Curie temperature and will not "hold" a magnetic field after the source is removed. A link is provided below. It might be possible to have steel alloys with a micro-structure similarto austenite at room temperature, but the characteristics are different and the alloy is called by a different name. But the mobility of carbon atoms within the structure is a definitive characteristic of austenite. And this only happens at elevated temperatures.

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Chemistry
Engineering
Chemical Engineering

What are the properties of petrol?

  • vaporizes very easily
  • vapor heavier than air
  • vapor ignites easily
  • once vapor ignited burns rapidly (nearly explosive)
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Chemical Engineering

How does operating pressure affect distillation?

Pressure is a critical factor in normal distillation. As the pressure is increased, the temperatures throughout the column will also increase and visa versa. Low pressures are often used to the separation of chemicals that are sensitive to high temperatures. High pressures are used to reduce the cooling requirements in the condenser. The pressure in a distillation column also has an effect on the vapor flow within the distillation column, as the pressure increases the vapor flow decreases.

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Physics
Chemistry
Chemical Engineering

How much salt will one gallon of water dissolve?

pure water will dissolve 3.184 pounds of salt.

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