Skip to main content

Homework #1 1.18 Nitrogen gas can be injected into oil wells to increase the recovery of crude oil (enhanced oil recovery). Usually, natural gas is produced with the oil and it is desirable to recover the nitrogen from the gas for reinjection into the well. Furthermore, the natural gas must not contain more than 3 mol% nitrogen if the natural gas is to be put into a pípeline. A total of 170,000 SCFH (based on 60°F and 14.7 psia) of natural gas containing 18% N2, 75% CH4, and 7% C2Hs at 100°F and 800 psia is to be processed for N2 removal. A two-step separation process has been proposed consisting of (1) membrane, separation with a nonporous glassy poly imide membrane, followed by (2) pressure-swing adsorption using molecular sieves to which the permeate gas is fed. The membrane separator is highly selective for N2 (SPn,,cH 16) and completely impermeable to ethane. The pressure- swing adsorption step selectively adsorbs methane, giving 97% pure methane product in the adsorbate, with an 85% recovery of CH4 fed to the adsorber. The nonpermeate (re tentate) gas from the membrane step and adsorbate from the pressure-swing adsorption step are combined to give a methane stream that contains 3.0% N2. The pressure drop across the membrane is 760 psia. The permeate at 20°F is compressed in two stages to 275 psia and cooled to 100°F before entering the adsorption step. The adsorbate gas, which exits the adsorber during regeneration at 100°F and 15 psia, is compressed in three stages to 800 psia and cooled to 100°F before being combined with nonpermeate gas to give the final pipeline natural gas (a) Draw a process flow diagram of the separation process using appropriate symbols from Tables 1.2 and 1.3. Include the gas compressors and heat exchangers. Label the diagram with all of the data given above, and number all process streams. (b) Compute by material balances, using' the data above, the component flow rates of N2, CH4, and C2Hs in Ibmol/h for all process streams entering and exiting the two separa tion operations. Place the results in a material balance table similar to Table 1.5 21 시 4

Question
Homework #1
1.18 Nitrogen gas can be injected into oil wells to increase
the recovery of crude oil (enhanced oil recovery). Usually,
natural gas is produced with the oil and it is desirable to
recover the nitrogen from the gas for reinjection into the
well. Furthermore, the natural gas must not contain more
than 3 mol% nitrogen if the natural gas is to be put into a
pípeline. A total of 170,000 SCFH (based on 60°F and 14.7
psia) of natural gas containing 18% N2, 75% CH4, and 7%
C2Hs at 100°F and 800 psia is to be processed for N2 removal.
A two-step separation process has been proposed consisting
of (1) membrane, separation with a nonporous glassy poly
imide membrane, followed by (2) pressure-swing adsorption
using molecular sieves to which the permeate gas is fed. The
membrane separator is highly selective for N2 (SPn,,cH
16) and completely impermeable to ethane. The pressure-
swing adsorption step selectively adsorbs methane, giving
97% pure methane product in the adsorbate, with an 85%
recovery of CH4 fed to the adsorber. The nonpermeate (re
tentate) gas from the membrane step and adsorbate from
the pressure-swing adsorption step are combined to give a
methane stream that contains 3.0% N2. The pressure drop
across the membrane is 760 psia. The permeate at 20°F is
compressed in two stages to 275 psia and cooled to 100°F
before entering the adsorption step. The adsorbate gas,
which exits the adsorber during regeneration at 100°F and
15 psia, is compressed in three stages to 800 psia and cooled
to 100°F before being combined with nonpermeate gas to
give the final pipeline natural gas
(a) Draw a process flow diagram of the separation process
using appropriate symbols from Tables 1.2 and 1.3. Include
the gas compressors and heat exchangers. Label the diagram
with all of the data given above, and number all process
streams.
(b) Compute by material balances, using' the data above,
the component flow rates of N2, CH4, and C2Hs in Ibmol/h
for all process streams entering and exiting the two separa
tion operations. Place the results in a material balance table
similar to Table 1.5
21 시 4
expand button
Transcribed Image Text:Homework #1 1.18 Nitrogen gas can be injected into oil wells to increase the recovery of crude oil (enhanced oil recovery). Usually, natural gas is produced with the oil and it is desirable to recover the nitrogen from the gas for reinjection into the well. Furthermore, the natural gas must not contain more than 3 mol% nitrogen if the natural gas is to be put into a pípeline. A total of 170,000 SCFH (based on 60°F and 14.7 psia) of natural gas containing 18% N2, 75% CH4, and 7% C2Hs at 100°F and 800 psia is to be processed for N2 removal. A two-step separation process has been proposed consisting of (1) membrane, separation with a nonporous glassy poly imide membrane, followed by (2) pressure-swing adsorption using molecular sieves to which the permeate gas is fed. The membrane separator is highly selective for N2 (SPn,,cH 16) and completely impermeable to ethane. The pressure- swing adsorption step selectively adsorbs methane, giving 97% pure methane product in the adsorbate, with an 85% recovery of CH4 fed to the adsorber. The nonpermeate (re tentate) gas from the membrane step and adsorbate from the pressure-swing adsorption step are combined to give a methane stream that contains 3.0% N2. The pressure drop across the membrane is 760 psia. The permeate at 20°F is compressed in two stages to 275 psia and cooled to 100°F before entering the adsorption step. The adsorbate gas, which exits the adsorber during regeneration at 100°F and 15 psia, is compressed in three stages to 800 psia and cooled to 100°F before being combined with nonpermeate gas to give the final pipeline natural gas (a) Draw a process flow diagram of the separation process using appropriate symbols from Tables 1.2 and 1.3. Include the gas compressors and heat exchangers. Label the diagram with all of the data given above, and number all process streams. (b) Compute by material balances, using' the data above, the component flow rates of N2, CH4, and C2Hs in Ibmol/h for all process streams entering and exiting the two separa tion operations. Place the results in a material balance table similar to Table 1.5 21 시 4
Expert Solution

Want to see the full answer?

Check out a sample Q&A here
Blurred answer
Students who’ve seen this question also like:
Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259696527
Author: J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher: McGraw-Hill Education
Not helpful? See similar books
marketing sidebar icon
Want to see this answer and more?
Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*
*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.

Related Chemical Engineering Q&A

Find answers to questions asked by students like you.

Q: The T-x-y and P-x-y diagrams for the binary benzene-toluene system is shown below. a. The bubble po...

A: Click to see the answer

Q: 100 moles/ hr of gas containing 70% methane and 30% ethane is burned completely with 25% excess air....

A: (a) To determine the Adiabatic Flame Temperature (AFT) for the complete combustion of feed gas mixtu...

Q: Liquid oxygen is used in the steel industry, in the chemical industry, in hospitals, as rocket fuel ...

A: Answer:The following properties are given in the question,

Q: H3CA is a vitally important intermediate in the metabolism of carbohydrates. The compound is widely...

A: Part (a):It is given that 21.35 mL of 0.678 M NaOH(aq) requires to fully neutralize 0.927 g of H3CAA...

Q: 4.4. A stream consisting of 44.6 mole% benzene and 55.4% toluene is fed at a constant rate to a proc...

A: Part (a)Let the molar flowrate of the fed stream be 100 mol/min. At the beginning, all the feed is l...

Q: A mixture of methanol (methyl alcohol) and water contains 70.00 % water by mass.The specific gravity...

A: It is given that a mixture of methanol (methyl alcohol) and water contains 70.00 % water by mass.Bas...

Q: A gas heater shown below in cross-section consists of a square sheet metal duct insulated on the out...

A: Part (a)The formula to calculate the equivalent diameter of the heater is:

Q: Answer a - d. (a) What is the constant volume heat capacity (Cv) for HBr, assuming it is an ideal ga...

A: Dear student, we answer only threee questions in a thread. so, we are providing answers to the first...

Q: You may have eaten “astronaut ice cream” as a kid at a science museum or planetarium to experience t...

A: Applying overall energy balance across the vacuum below in equation (1), the work term in overall en...

Q: An open container is filled with water up to a depth of 3 meters and above water it is filled with o...

A: As per the given information, the tank is filled with oil and water as shown in Figure1.Density of O...

Q: For a test of enzyme-catalyzed kinetics, the following data were recorded product (mmol/mL) (mmol/mL...

A: Part (a)Michaelis-Menten equation to be used is written as equation (1).The reciprocal equation of (...

Q: The oxidative coupling of methane to form ethylene (2 CH4 + O2 -> C2H4 + 2 H2O) is known as the “...

A: c) Density is defined as mass per unut volume. Thus, density of the inlet mixture may be determined ...

Q: EXERCISES Section 2.1 2.1. Minimum work of separation. A refinery stream is separated at 1,500 kPa i...

A: The minimum work in kJ/h required is calculated using below formula:

Q: PLease show all steps

A: Part (a)Let the reaction taking place in the CSTR be, S→P According to the Michaelis-Menten equation...

Q: .19 A liquid storage facility can be modeled by where y is the liquid level (m) and u is an inlet fl...

A: Part (a):Since all the derivatives are zero and y=u=0 at the nominal steady state, hence taking Lapl...

Q: A fluid of unknown density is used in two manometers—one sealed-end, the other across an orifice in ...

A: It is given that a fluid of same unknown density is used in two manometers—one sealed-end, the other...

Q: The extraction of acetic acid from water is both industrially and environmentally significant. Methy...

A: Part (a)100 kg of the feed in stream 1 containing 75 wt% water (W) and 25% acetic acid (A). Stream 2...

Q: A flash separator “flashes” (abrupt increase in temperature and pressure) a liquid stream containing...

A: The schematic flow diagram of the given process is shown below. n-hexane is represented by ‘1’ and n...

Q: 9.18. In a continuous-flow process, a gas is throttled to half its density. The throttling is well d...

A: Throttling process is defined as the process for which enthalpy remains constant that is no work is ...

Q: This problem is (9.19) from a book  "Thermodynamics and Statistical Mechanics An Integrated Approach...

A: The equation of the state of a certain gas is given by equation (1), where,T represents temperature ...

Q: 3.30. Coal be ing used in a power plant at a rate of 8000 Ibm/min has the following composition: Com...

A: The flowrate of coal is given as 8000 lbm/min with 4.58 lbm H2O per lbm of coal. Thus, 5.58 lbm of w...

Q: A substrate is decomposed in the presence of an enzyme according to the Michaelis-Menten equation wi...

A: Part (a)Let the reaction taking place in the CSTR be, S→P According to the Michaelis-Menten equation...

Q: This problem is (6.10) from a book  "Thermodynamics and Statistical Mechanics An Integrated Approach...

A: Part (a): Given that the container is well insulated, N moles of a monoatomic ideal gas expands irre...

Q: 6. The manufacture of such products as penicillin, tetracycline, vitamins, and other pharmaceuticals...

A: Part (a)The basis of the process is taken as 98 lb/hr of the feed. The symbol used for vitamins is ‘...

Q: A 4-in. schedule 80 steel pipe (ID = 3.826 in., OD = 4.5 in.) carries a heat-transfer fluid at 600 F...

A: The schematic diagram of the pipe with insulation is given below with the inner radius R1, Outer rad...

Q: 5.10. Find the fundamental equation for the intensive quantity eˆ = E/V in differential form. Also g...

A: Step 1:Thanks for the question. We accepted this question by mistake. In the question, the variables...

Q: The surface temperature of the electronic chip shown below is 75C and it is surrounded by ambient a...

A: The area of the upper surface of the chip carrier is calculated as:

Q: A rectangular steel (k = 58.7 W/m * K) fin 25 mm thick and 150 mm long is attached to a wall that is...

A: Part (a)The figure representing the given question is:Let the depth of the fin be 1m as the calculat...

Q: Please answer part (g) only.

A: Part g:The part can be solved in two ways:Apply final value theorem and find the ultimate value of t...

Q: Please show all steps, thank you

A: AnswerPart a:Multiple stAnswerPart a:Multiple states are possible if enzymatic reaction is mass tran...

Q: For the propylene-propane separation using distillation column, using the following thermodynamic pr...

A: Click to see the answer

Q: 1. Countercurrent multistage extraction. Pure methylisobutyl ketone (MIK) of 200kg/h is used to extr...

A:  For counter current multistage flow pure methyl isobutyl is used to extract acetone 

Q: 5.2. A friend suggests that the intensive pair (e,T) is enough information to determine the state of...

A: For a single phase, single component system, calculate the degree of freedom (F) from the Gibb’s pha...

Q: A typical column is shown in figure together with the known information for each stream. Calculate t...

A: Let the basis of the process be taken as 100 kg feed (F). Apply material balance on the overall proc...

Q: A rectangular fin 1.0 ft long, 1.0 ft wide, and 2in. thick loses heat to the atmosphere at70 F. The ...

A: Given thatThermal conductivity=k=24 Btu/h.ft.0FHeat transfer coefficient=h= 2 Btu/h.ft2.0fAtmospheri...

Q: The oxidative coupling of methane to form ethylene (2 CH4 + O2 -> C2H4 + 2 H2O) is known as the “...

A: Part (a)For an ideal gas,mole fraction = volume fractionFrom the given volume percent of the inlet g...

Q: Acetone is used in the manufacture of many chemicals and also as a solvent. In its latter role, many...

A: Apply material balance on overall process including all the 3 units (adsorber column, distillation c...

Q: 40. A liquid mixture containing 30.0 mole% benzene (B), 25.0% toluene (T), and the balance xylene (X...

A: Part (a)The basis of the given process is taken as 100 mol/h of feed mixture.The process involves di...

Q: 2. Sugar cane can be assumed to consist of 15% sugars, 15% fiber (Solids) and 70% water (all based i...

A: Let the basis of the calculation be 1 kg of the sugarcane fed to produce non-crystallized sugar.Suga...

Q: Energy conservation is important for houses. To what fraction is the heat transfer rate reduced by r...

A: For convective heat transfer through the glass window of area A ft2 having convective heat transfer ...

Q: This problem is (6.13) from a book  "Thermodynamics and Statistical Mechanics An Integrated Approach...

A: Note: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question...

Q: (a) If 300 lb of air and 24.0 lb of carbon are fed to a reactor at 600 ° and after complete combusti...

A: Part (a)Moles of Carbon fed to the reactor is written as equation (1).Moles of Air fed to the reacto...

Q: Public concern about the increase in C0, in the atmosphere has led to many proposals to eliminate 0 ...

A: Let the basis of the calculations be 1 mole of CO2 fed to the reactor. Since there is 70% conversion...

Q: This problem is (6.20) from a book  "Thermodynamics and Statistical Mechanics An Integrated Approach...

A: Part (d):We know that

Q: How much heat (in kJ/hr) is released/absorbed (specify which) if 100 mol/hr of liquid n-heptane is c...

A: The combustion reaction of n-heptane is:

Q: The analysis of pesticides for environmental extracts using chromatography typically requires a solv...

A: Part (a).Let the basis of the process be 200 kg/min of the feed. Hexane is represented by ‘H’ and di...

Q: Cyclohexanol is a highly desired chemical precursor for the production of nylon (billions of kilogra...

A: Part (c)The Antoine equation to be used is written below.Here, Pi* is the vapor pressure of the comp...

Q: A new engineering graduate was putin charge of a reactor. The engineer quickly learned that the proc...

A: Part (b)The Schematic diagram of the given process is drawn below. The basis of the calculation is t...

Q: In

A: Part (a) The reversible reaction for the formation of ammonia from nitrogen and hydrogen is:N2 + 3H2...

Q: The standard heat of reaction for the production of formaldehyde in the reaction, 2 CH3OH (l) + O2 (...

A: Click to see the answer

Knowledge Booster
Recommended textbooks for you
  • Introduction to Chemical Engineering Thermodynami...
    Chemical Engineering
    ISBN:9781259696527
    Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
    Publisher:McGraw-Hill Education
    Elementary Principles of Chemical Processes, Bind...
    Chemical Engineering
    ISBN:9781118431221
    Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
    Publisher:WILEY
    Elements of Chemical Reaction Engineering (5th Ed...
    Chemical Engineering
    ISBN:9780133887518
    Author:H. Scott Fogler
    Publisher:Prentice Hall
  • Process Dynamics and Control, 4e
    Chemical Engineering
    ISBN:9781119285915
    Author:Seborg
    Publisher:WILEY
    Industrial Plastics: Theory and Applications
    Chemical Engineering
    ISBN:9781285061238
    Author:Lokensgard, Erik
    Publisher:Delmar Cengage Learning
    Unit Operations of Chemical Engineering
    Chemical Engineering
    ISBN:9780072848236
    Author:Warren McCabe, Julian C. Smith, Peter Harriott
    Publisher:McGraw-Hill Companies, The
  • Introduction to Chemical Engineering Thermodynami...
    Chemical Engineering
    ISBN:9781259696527
    Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
    Publisher:McGraw-Hill Education
    Elementary Principles of Chemical Processes, Bind...
    Chemical Engineering
    ISBN:9781118431221
    Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
    Publisher:WILEY
    Elements of Chemical Reaction Engineering (5th Ed...
    Chemical Engineering
    ISBN:9780133887518
    Author:H. Scott Fogler
    Publisher:Prentice Hall
    Process Dynamics and Control, 4e
    Chemical Engineering
    ISBN:9781119285915
    Author:Seborg
    Publisher:WILEY
    Industrial Plastics: Theory and Applications
    Chemical Engineering
    ISBN:9781285061238
    Author:Lokensgard, Erik
    Publisher:Delmar Cengage Learning
    Unit Operations of Chemical Engineering
    Chemical Engineering
    ISBN:9780072848236
    Author:Warren McCabe, Julian C. Smith, Peter Harriott
    Publisher:McGraw-Hill Companies, The