CPI, Process Control, and Plant Design

In contact process, SO3 is absorbed in 97% H2SO4 and not in water because

20% Oleum means that in 100 lb., there are 20 lb. of

What is the meaning of calendering in the production of paper

In Kraft process of paper manufacture, white cooking liquor is consists of caustic soda,

Clays are primarily consist of

What is the element extracted from galena ore followed by refining process

Which among these fatty acids are saturated?

Solvent used for extraction of oil is

Which among the statements below is False. In the solvent extraction of oil, the rate of extraction

Which of the following is a detergent

Soaps remove dirt by

Diesel has a carbon chain of

Thermoplastic materials

Thermosetting materials

Which of the following is not an antibiotic?

Plasticizers are added to paints to

How many MT of calcium carbonate is needed if the process is intended to produce 200MT of soda ash in a Solvay process.

A cement manufacturing plant is designed to produce 2,000 MT per day of cement clinker. Cement clinker can typically composed of CaO, SiO2, Fe2O3, and Al2O3. If the incoming silica and shale, as raw materials were known to be 20,000 MT and 180,000 MT, respectively. Calculate the following.  Assume 300-day operation in a year. In addition, the raw material is composed of limestone (87%CaO), iron oxide (24% Fe2O3), shale (60% SiO2, 25%Al2O3), and silica (90% SiO2).

What is the composition of Al2O3 in the cement clinker?

What is the composition of SiO2 in the cement clinker?

A temperature sensor has a range of 20 – 250 degrees C. A measurement results in a value of 75 degrees Celsius for the temperature.  What would be the error if the accuracy is +/- 0.75% full scale?

A static characteristics of a measuring instrument that denotes the smallest change in a physical variable which will cause a variation in the response of a measuring system.

The stimulus, excitation or command applied to a control system is:

An undesired stimulus affecting the value of the controlled variable.

It is the ratio of the Laplace Transform of the output to the Laplace Transform of the input.

Determine whether the open loop system is stable given the transfer function G = kc / (s+1)(2s+1)

When designing a storage vessel that will hold sodium hydroxide solution, what material is the most appropriate

What is passivation process which is often conducted in reactors or equipment during preventive maintenance?

Stainless Steel Type 316 is an example of

A vessel is to be designed for a particular service with corrosion allowance of 0.25″. The materials being selected are carbon steel, SS 304, SS 316 and monel. The cost of money is 12%. Determine the most suitable material given 20 year study period.

The cheapest material of construction for the storage of sodium hydroxide up to concentration of 75%

For high pressure process equipment/vessels, the connected nozzle should be

Which is the most suitable for transportation of sticky material?

The joint efficiency for a seamless pipe is

A scope of a plant design project that works on using indices to project the actual or present values of various equipment and other plant expenses essential to cost estimations.

In putting up a caustic soda plant, determine the fixed capital investment assuming that the targeted production rate of the product is 70 tons per day with a projected selling price of USD 1,325 per ton. Assume 275 days in one year.

A particular plant has designed an equipment and is estimating its probably cost. An old equipment with a capacity of 100,000 tons/yr costs PhP 29,000,000.  Assuming m = 0.53, what will be the projected fixed capital investment?

Calculate the cost in 1998 of a heat exchanger with an area of 90 m2  using the following data:

The economy of scale refers to the fact that as a plant, process, or piece of equipment gets larger, the cost increases at a rate smaller than the rate at which the size increases. This is a direct consequence of the equation: (CostA/CostB)=(CapcityA/CapacityB)n . However, the economy of scale no longer applies when:

The total product cost per unit of production is given by the equation: C_T =h+mPⁿ+Oc/P  where h= P 350000/year/tonne product, m and n are 0.12 and 2.5 respectively, Oc = organizational cost of P 60000 and P is the production rate, tonnes/y. The optimum production rate is:

A junior engineer is to design a cylindrical pressurized vessel with a diameter of 7.2m that will carry a maximum internal pressure of 12 bar (abs) at temperature of 410°C. The corrosion allowance is measured to be 0.25 inches and the vessel will be single-welded butt joint.  The material is SS 302 and the allowable stress at the given temperature is 57,200 kPa.  What is the practical wall thickness of the equipment?