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36 Cards in this Set

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  • Back
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Methanol Is injected into the P 9–3 reactor chart stream to help maintain a moisture content range of____ppm in the P 9–3 recycle gas stream.

15-25

Under 30

The flow of sweep gas to each of the individual unit for sub headers is controlled by which method?

Orifice plates

You get the high level alarm on the P 9–3 compressor stream scrubber knockout (V-9327). What is the first thing you check on the board? You would check the____level.

C-9303 Stream Drum

In what order does the reactor effluent pass through the following exchangers after leaving R-9304

1.E 9302


2.E 9308 or E 9301


3.E 9305


4.E 9306

Which of the following best describes the effects of dehydrogenation within the P9-3 reformer unit?

Releases hydrogen and consumes heat

Which of the following are not permanent poisons to the catalyst in the P 9–3 reactors?

Sulfur and nitrogen

If HCl, (hydrochloric acid) in the P 9–3 recycle gas stream is higher than the target amount, this could indicate which of the following?

Excessive moisture in the recycle gas stream

Normal pressure at the effluent separator be 9304 is ____psig. (PIC93002)

235

From where do we normally draw samples in order to check for HCL or H2S?

Compressor barrel

Which one of the following will increase your hydrogen to oil ratio?

Opening the gas HIC valves 93016 and 93017

Your R.O.N. (Road Octane Number) For the morning stabilizer bottom samples 99. A daily orders list to target as 100 to 100.5. What is normally done to bring the R.O.N. To target?

Increase reactor inlet temperatures (Heater outlet temps)

The daily orders list the target Road octane number for the stabilizer bottoms as 100 to 100.5 the previous shift phase 4° across-the-board on the reactor inlets (Heater outlets). After raising temperatures, the stabilizer bottom samples were taken and the Road Octane Number is now at 100.


Which one of the following was the initial sample result for stabilizer R.O.N (Road octane number)?

The initial stabilizer bottom sample with 99

Which one of the following will increase reactor charge to P 9–3 unit?

Manually raising setpoint at FC FC 93030 (P9-3 feed control valve)

Which one of the following would cause a sudden increase in the level at V9301 (P9-3 feed drum)?

LCV 93001A failed open

P 9–3 reactor charge via P9301 A/B, Is routed to the reformer unit via which type of control?

Rate of flow control

Which one of the following would cause an increase in the moisture in the P 9–3 recycle gas stream?

Increasing methanol addition to the reactor charge

Which one of the following will cause LCV 93001A to close?

An increase in the level at V9301 (Feed surge drum)

Opening HCV 93005 reactor effluent bypass valve, will have which one of the following effects?

An increase in the inlet temperature of the tube side of the stabilizer tower reboiler E9308

Which one of the following moves will decrease the hydrogen oil mole ratio in the P9–3?


This is the ratio of hydrogen in the recycle gas compared to feed rate flow.

Increasing the reactor charge rate to the P 9–3 unit (FRC93030)

Which one of the following is performed to detect contamination of the P 9–3 unit by a temporary poison?

Drawing samples from the TC9301 recycle gas stream and checking for H2S

What is the function of the stabilizer tower T9301 ?

Distills the reformate to remove C5s and lighter ends to P9-2 Frac, and optimizes the aromatic content of the tower bottoms for use at P9-4

The stabilizer tower bottoms is normally about it to

P 6–3 splitter unit

They alternate routing of T9301 stabilizer tower bottoms is___ (not the normal routing.

Heavy aromatics/ gasoline blending tanks

Normally vent gas from the stabilizer tower overhead accumulator V9306 is rounded to the?

P 9–2 Frac, Deethanizer absorber, T9257

How does the liquid get some V9304 (effluent separator) to T9301 the (stabilizer tower)?

High pressure at V9304 forces flow to T9301

Select the control valve that routes excess Naptha to storage at TK151 and TK152

LCV 3001 B

Liquid leaving the V9304 effluent separator is controlled by which of the following methods?

Level control cascaded to flow

Reflux to T9301 is controlled by what method?

Level control cascaded to flow

Excess reflux leaving V9306 does soul by which method?

Rate of flow

You are placing P1642 or P1643 offsite pump in service. In what position should you place the minimum flow valve on these pumps?

Open to where the flow is audible.

Motor operated valve, MOV 17, bypass around LCV93001B is located where?

At station X, near Plant 6

Flow through the minimum flow line at the offsite charge pumps P1642 and P1643, is routed to where?

Fill line of the offsite thanks TKS 151 and 152

Which of the following is a true statement about the P 9–3 charge pumps?

The pumps are 2300 V pumps and must be electrically blocked out by an electrician

What is the purpose of routing reactor charge through the E9301 and E9302 exchangers?

Preheat the reactor charge

What is the physical state of the reactor charge after being routed Through a 930 to a and B, hot feed/affluent exchangers?

Vapor state

The normal operating pressure for T9301 stabilizer tower is___psi.

200