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3 years ago

Firebrick is referred to as "common brick" because it is the most commonly used

Engineering

1 answer:

Tju [1.3M]3 years ago

3 0

Answer: Firebrick is referred to as "common brick" because it is the most commonly used type of brick --- False

Explanation:

Firebrick is not the most commonly used, it is a refractory ceramic brick used in lining of furnaces and kilns, which is built basically to withstand or resist high temperature.The most commonly used type of brick, is the Building Brick called "common brick" because it is versatile and used for applications where appearance is not an important factor.

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Close to 16 billion pounds of ethylene glycol (EG) were produced in 2013. It previously ranked as the twenty-sixth most produced

bekas [8.4K]

Answer:

a) 0.684

b) 0.90

Explanation:

Catalyst

EO + W → EG

a) calculate the conversion exiting the first reactor

CAo = 16.1 / 2 mol/dm^3

Given that there are two stream one contains 16.1 mol/dm^3 while the other contains 0.9 wt% catalyst

Vo = 7.24 dm^3/s

Vm = 800 gal = 3028 dm^3

hence Im = Vin/ Vo = (3028 dm^3) / (7.24dm^3/s) = 418.232 secs = 6.97 mins

next determine the value of conversion exiting the reactor ( Xai ) using the relation below

KIm = $\frac{Xai}{1-Xai}$ ------ ( 1 )

make Xai subject of the relation

Xai = KIm / 1 + KIm --- ( 2 )

where : K = 0.311 , Im = 6.97 ( input values into equation 2 )

Xai = 0.684

B) calculate the conversion exiting the second reactor

CA1 = CA0 ( 1 - Xai )

therefore CA1 = 2.5438 mol/dm^3

Vo = 7.24 dm^3/s

To determine the value of the conversion exiting the second reactor ( Xa2 ) we will use the relation below

XA2 = ( Xai + Im K ) / ( Im K + 1 ) ----- ( 3 )

where : Xai = 0.684 , Im = 6.97, and K = 0.311 ( input values into equation 3 )

XA2 = 0.90

4 0

3 years ago

you are planning to buy a new couch for your family room you measure the available space and conclude that the couch should be b

nirvana33 [79]

5-6 feet is 60-72 inches and 8 feet is 96 inches

7 0

3 years ago

Conditions of special concern: i. Suggest two reasons each why distillation columns are run a.) above or b.) below ambient press

lutik1710 [3]

Solution :

Methods for selling pressure of a distillation column :

a). Set, $\text{based on the pressure required to condensed}$ the overhead stream using cooling water.

(minimum of approximate 45°C condenser temperature)

b). Set, $\text{based on highest temperature}$ of bottom product that avoids decomposition or reaction.

c). Set, $\text{based on available highest }$ not utility for reboiler.

Running the distillation column above the ambient pressure because :

The components to be distilled have very high vapor pressures and the temperature at which they can be condensed at or below the ambient pressure.

Run the reactor at an evaluated temperature because :

a). The rate of reaction is taster. This results in a small reactor or high phase conversion.

b). The reaction is endothermic and equilibrium limited increasing the temperature shifts the equilibrium to the right.

Run the reaction at an evaluated pressure because :

The reaction is gas phase and the concentration and hence the rate is increased as the pressure is increased. This results in a smaller reactor and /or higher reactor conversion.

The reaction is equilibrium limited and there are few products moles than react moles. As increase in pressure shifts the equilibrium to the right.

7 0

3 years ago

In this assignment, you will demonstrate your ability to write simple shell scripts. This is a cumulative assignment that will c

nevsk [136]

Answer:

Explanation:

Usage: flip [-t|-u|-d|-m] filename[s]

Converts ASCII files between Unix, MS-DOS/Windows, or Macintosh newline formats

Options:

-u = convert file(s) to Unix newline format (newline)

-d = convert file(s) to MS-DOS/Windows newline format (linefeed + newline)

-m = convert file(s) to Macintosh newline format (linefeed)

-t = display current file type, no file modifications

8 0

3 years ago

What are the relevance of report writing

nasty-shy [4]

Answer:Report writing consists of the history and facts of a project or of any kind of event. It is useful to record past history and an overall summary of decisions. Report writing helps to solve problems as a path. Writing a report will guide you in a way that will modernize details of the improvements and upcoming plans.

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3 years ago