All Matches
Solution Library
Expert Answer
Textbooks
Search Textbook questions, tutors and Books
Oops, something went wrong!
Change your search query and then try again
Toggle navigation
FREE Trial
S
Books
FREE
Tutors
Study Help
Expert Questions
Accounting
General Management
Mathematics
Finance
Organizational Behaviour
Law
Physics
Operating System
Management Leadership
Sociology
Programming
Marketing
Database
Computer Network
Economics
Textbooks Solutions
Accounting
Managerial Accounting
Management Leadership
Cost Accounting
Statistics
Business Law
Corporate Finance
Finance
Economics
Auditing
Ask a Question
Search
Search
Sign In
Register
study help
business
intermediate accounting reporting
Questions and Answers of
Intermediate Accounting Reporting
Construct a flowchart of the process and completely label the streams. Show the details of only one train in the SO2 scrubber operation.
Construct a flowchart of the process and completely label the streams. Show the details of only one train in the SO2 scrubber operation.
The converter loop is a net generator of energy (why?) and proper utilization of that energy improves process economics. Assuming that the makeup gas is at 100°C and that the purge gas and crude
Relax the assumptions regarding the split of components at the flash tank by incorporating the information below into your calculations. Using all other conditions given in Problem 13.20, reestimate
Scale the results of your calculations in Problems 13.5(a); 13.7(a),(b); 13.10(a),(b); 13.20(b); 13.22; and 13.23 so that the quantities requested in each correspond to the specified production rate
The liquid leaving the flash tank in the converter loop is fed to a distillation column in which specification-grade methanol is produced. The column is designed to recover 95% of the methanol in an
How much heat must be removed to cool the reaction products from the MSR to 35°C? Express your answer in kJ/kmol of reaction products from the MSR.
The purge stream may be used to replace a portion of the methane burned in the reformer. Assuming that the purge gas is at 35°C and that it is fed directly to the reformer burners with 5% excess air
Perform an analysis of the converter loop by determining the composition and flow rate of the purge stream using a basis of 100 kmol of feed from the MUG compressor.a. Assume that the feed has a
In terms of Le Chatelier’s Principle, explain why steam reforming is done at low pressures while methanol synthesis is performed at moderate to high pressures. Explain why reforming is done at high
In terms of Le Chatelier’s Principle, explain why steam reforming is done at low pressures while methanol synthesis is performed at moderate to high pressures. Explain why reforming is done at high
In terms of Le Chatelier’s Principle, explain why steam reforming is done at low pressures while methanol synthesis is performed at moderate to high pressures. Explain why reforming is done at high
In terms of Le Chatelier’s Principle, explain why steam reforming is done at low pressures while methanol synthesis is performed at moderate to high pressures. Explain why reforming is done at high
You need to examine various ways of controlling the temperature in the MSR because the catalyst is sensitive to high temperatures and it has been reported that elevated temperatures lead to the
Values of Kϕ13.3 and Kϕ13.5 can deviate significantly from unity; typical values for Kϕ13.3 range from 0.7 to 0.9 at a pressure of 7.5 MPa and typical MSR temperatures from 200°C to 320°C, while
A situation often encountered with thermodynamic data is that different sources may present different correlations for a given quantity. In this case study, for example, two different expressions are
As covered in the Process Description, there are three primary reactions that occur in the MSR. These are given by Equations 13.3, 13.4, and 13.5. However, determination of chemical equilibrium among
Assume that CO, CO2, H2, and CH4 are insoluble in liquid water.a. Determine the dew-point temperature of the product gas from the reformer at 1.6 MPa.b. What is the composition of the gas stream
Each compressor stage in the MUG compressor unit operates adiabatically. If ideal gas behavior is assumed, the temperature of the gas leaving each compressor stage (Tout) is given by the
Again consider the modified system configuration described in the previous problem and estimate the effects of temperature and pressure on conversion. Do this by calculating CO and Hconversions and
For the purpose of analyzing the effects of recycle on process economics, consider a variation from the process flowchart that takes the synthesis gas leaving the MUG compressor directly to the
Assume that CO, CO2, H2, and CH4 are insoluble in liquid water.a. Determine the dew-point temperature of the product gas from the reformer at 1.6 MPa.b. What is the composition of the gas stream
The generation of steam from the heat produced in the reformer is essential for economic viability of this energy-intensive operation.a. At what rate (kg/h) is superheated steam at 4.8 MPa and 100°C
Operating data from the plant are available for a past period of operation. For that period, the plant operators determined the composition of the reformer product gas by sampling the product gas
Operating data from the plant are available for a past period of operation. For that period, the plant operators determined the composition of the reformer product gas by sampling the product gas
The heated tube length in the reformer is 10 m and the external diameter of the tubes is 10.5 cm. If the rate of heat transfer (Q̇) from the combustion gases in the firebox to the reformer gases
The reformer product gas leaves the reformer at 855°C.(a) Using the flow rate of the product gas determined in Problem 13.5, calculate the rate (kJ/h) at which heat must be transferred from the
Quantitatively demonstrate that high temperatures and low pressures favor the formation of CO and H2 in the reformer. Do this by calculating and then plotting the production rates (kmol/kmol of CH4
As pointed out in the Process Description, the water–gas shift reaction (Equation 13.2) occurs in the reformer along with the reforming reaction (Equation 13.1). It too is controlled by chemical
The primary purpose of the reformer is to convert methane and water to carbon monoxide and hydrogen (Equation 13.1). The extent of this reaction is limited by chemical equilibrium.whereSubscript 13.1
What are the compositions (mole and mass fractions) and volumetric flow rates (m3/kmol CH4 fed to burners) of (a) the effluent gas from the reformer burners and (b) the gas entering the stack?
Five percent excess air is used in burning the reformer fuel; it is drawn into the system at 30°C and 70% relative humidity. Estimate the average molecular weight of the air. Why does it differ from
The process objective can be described most simply as converting methane and water into methanol and hydrogen, and then purifying the methanol so that it meets specifications. The overall process
After several years of research, the company has developed a new grade of CPVC that contains 70.0 wt% chlorine. The high softening temperature and nonflammability of the new material make it suitable
In the dryer air furnace, a natural gas containing 92.5 mole% methane, 4.8% ethane, and the remainder propane is burned with 20% excess air. The fuel enters the furnace at 25°C and the air enters at
The CPVC wetcake leaves the product centrifuge at 80°C and 1 atm and is fed to the elevated end of a rotary dryer (a rotating cylinder inclined about 35° from horizontal). A fresh air stream at
Batches of caustic solution for the waste liquor neutralizer are prepared by filling the NaOH makeup tank with the required amount of mixed salt solution at 25°C, then adding the required mass of
In the chlorination reactor, the feed slurry enters at 50 C and the products leave at 65°C. Most of the heat generated by the reaction is transferred to cooling water flowing through a jacket
The stream leaving the chlorine absorber must be heated from 25°C to 50°C before it enters the chlorination reactor. The heat capacity of PVC is 1.2 kJ/(kg∙°C) and the heat capacity of dissolved
The chlorine vapor leaving the vaporizer passes through an adiabatic expansion valve in which its pressure drops by 640 mm Hg and its temperature drops to 3°C. It then goes through a heat exchanger
CPVC is degraded by both strong acids and strong bases at elevated temperatures; acids corrode process units unless very expensive corrosion-resistant construction materials are used; and aqueous
Liquid chlorine at 22°C is pumped continuously to the chlorine vaporizer. The vaporization process causes the temperature of the chlorine to drop. Take the heat of vaporization of chlorine to be 290
In the waste liquor neutralizer, both the hydrochloric acid separated from the wetcake in the reactor centrifuge and the CO2 generated in the resin neutralizer are neutralized with an aqueous
The slurry exiting the resin neutralizer, which contains 15.0 wt% CPVC in an aqueous NaCl solution, is concentrated in the product centrifuge. The wetcake leaving the centrifuge contains 90.0 wt%
The 10% sodium bicarbonate solution is made in the plant by adding two 50-lbm bags of NaHCO3 powder to a batch dissolving tank filled to roughly 80% of its capacity. From the dissolving tank,
The wetcake leaving the reactor centrifuge is conveyed to the resin neutralizer, a jacketed reactor in which the hydrochloric acid is neutralized with a weak base, sodium bicarbonate: The wetcake
Recalling that the reactor centrifuge separates the slurry leaving the reactor into a wetcake that contains 90 wt% CPVC and a waste liquor stream of hydrochloric acid, calculate the mass flow rate of
Hydrogen chloride is highly soluble in water and essentially insoluble in CPVC. Estimate the pH of the aqueous phase (hydrochloric acid) leaving the reactor, taking the density of this phase to be
The length of the reactor is an important design parameter.What would be the drawbacks of making the reactor (i) too short, and (ii) too long?
List the reaction and mass transfer processes occurring in the chlorination reactor. (What reacts and what is formed? Which species diffuse into and out of the resin particles?)
Calculate the total mass of chlorine (kg) in the chlorine absorber tank, assuming ideal gas behavior in the head space. (Suggestion: Take as a basis of calculation a specified mass of slurry,
The slurry occupies 70% of the total tank volume and the head space occupies the remaining 30%. The mean residence time of the slurry in the tank (which equals the volume of the slurry in the tank
Starting with the mole fraction of dissolved chlorine in the aqueous phase calculated in Problem 12.9 (xa ), use Raoult’s law to estimate the partial pressure of chlorine in the gas phase. What
The flowchart for the absorber involves seven unknown variables (ṁ0 and ṁCl2 having been determined in Problem 12.5). Write the seven equations you would use to calculate those variables, noting
The flowchart for the absorber involves seven unknown variables (ṁ0 and ṁCl2 having been determined in Problem 12.5). Write the seven equations you would use to calculate those variables, noting
Use the given data to calculate the modified Henry's law coefficients, αp and αa, for chlorine in PVC and in water at 25°C. When determining αp, plot the solubility data to make sure that the
Speculate on why chlorine is stored as a liquid rather than being purchased and stored as a gas at the absorber temperature (25 °C), when storing it as a gas would eliminate the need for the
Vapor pressure data for chlorine are given below.a. Use these data and the Clausius–Clapeyron equation (Equation 6.1-3) to estimate the heat of vaporization of chlorine (kJ/mol) and to obtain an
Vapor pressure data for chlorine are given below.a. Use these data and the Clausius–Clapeyron equation (Equation 6.1-3) to estimate the heat of vaporization of chlorine (kJ/mol) and to obtain an
Vapor pressure data for chlorine are given below.a. Use these data and the Clausius–Clapeyron equation (Equation 6.1-3) to estimate the heat of vaporization of chlorine (kJ/mol) and to obtain an
The plant is to produce 3.5 × 106 kg/year of "67% Cl." Assuming that the plant operates 300 days per year, 24 hours per day, calculate the required hourly feed rates (kg/h) of the 10 wt% PVC slurry
Neglecting the end groups, calculate the mass fractions of carbon, hydrogen, and chlorine in PVC and in the “67% Cl” produced in this process. (The molecular structure of this product is shown in
In a page or less, summarize the overall process. In your summary, answer the following questions:(a) What is the reaction that this process is designed to carry out?(b)
On a second page (which you may find convenient to generate with a spreadsheet program), prepare a table to accompany the flowchart. The column headings should be the stream identifiers from the
On an oversized page, draw a flowchart for this process. Label each stream with an identifying symbol (e.g., Sl, S2, S3, ...) and known information about what the stream is and/or what it contains
Use a commercial flowchart simulation program such as HYSYS or ASPEN to simulate the ammonium nitrate manufacturing process described in Example 10.3-3.Example 10.3-3 FINES DISSOLVING TANK m2(kg
You are to write the code for a convergence module that can deal with one to three tear stream variables using theWegstein algorithm, as outlined in Appendix A.2. The object is to determine the
You are to simulate a single-phase adiabatic reactor in which a single gas-phase reaction takes place. The reaction has the general formIn this equation Ai is the ith reactant or product and vi is
You are to simulate a single-phase reactor in which a single reaction takes place. The reaction has the general form.In this equation Ai is the ith reactant or product and vi is the stoichiometric
You are to simulate a partial condenser module that converts a vapor feed stream (SF) containing a single condensable species at temperature TF(K) to liquid and vapor product streams (SL, SV) in
A liquid mixture of benzene and toluene is to be separated in a continuous single-stage equilibrium flash tank.The pressure in the unit may be adjusted to any desired value, and the heat input may
Methanol is synthesized from carbon monoxide and hydrogen in the reactionA process flowchart is shown below.The fresh feed to the system, which contains only CO and H2, is blended with a recycle
The product gas from a solid fuel combustion reaction has the following dry-basis molar composition: 72.0%CO2, 2.57%CO, 0.0592% SO2, and 25.4%O2. Pure oxygen is fed to the furnace in 20% excess of
The wastewater treatment plant at the Ossabaw Paper Company paper mill generates about 24 tonnes of sludge per day. The consistency of the sludge is 35%, meaning that the sludge contains 35 wt%
The equilibrium constant for the ethane dehydrogenation reaction,is defined aswhere P(atm) is the total pressure and yi is the mole fraction of the ith substance in an equilibrium mixture. The
A pair of gas-phase reactions with the following stoichiometric equations take place in a continuous reactor:The reactions of ethylene and water to form ethanol and of ethanol to form diethyl ether
A continuous adiabatic flash tank is to be used to separate a liquid mixture of two substances (A and B). The feed enters at temperature T and a high pressure and flashes to a low pressure, P,
Seawater containing 3.5 wt% dissolved salts is to be desalinated in an adiabatic six-effect evaporator. Backward feed is to be used: the seawater is fed to the last evaporator, and successively
Fuel oils contain primarily organic compounds and sulfur. The molar composition of the organic fraction of a fuel oil may be represented by the formula CpHqOr ; the mass fraction of sulfur in the
The composition of a coal is determined by a proximate analysis. The coal is first finely ground and air-dried. Samples of the dried coal are then subjected to several operations, with the sample
A mixture of propane and butane is burned with pure oxygen. The combustion products contain 47.4 mole% H2O. After all the water is removed from the products, the residual gas contains 69.4 mole % CO2
Ethyl acetate (A) undergoes a reaction with sodium hydroxide (B) to form sodium acetate and ethyl alcohol: The reaction is carried out at steady state in a series of stirred-tank reactors. The
At the end of 2008, Richards Company is conducting an impairment test and needs to develop a fair value estimate for machinery used in its manufacturing operations. Given the nature of Richard’s
Larry’s Lawn Equipment sells high-quality lawn mowers and offers a 3-year warranty on all new lawn mowers sold. In 2008, Larry sold $300,000 of new specialty mowers for golf greens for which
Mount Co. has the following defined-benefit pension plan balances on January 1, 2008.Projected benefit obligation.............................$4,500,000Fair value of plan
On January 1, 2008, Diana Peter Company has the following defined benefit pension plan balances.Projected benefit obligation.................................$4,200,000Fair value of plan
The following defined-benefit pension data of Doreen Corp. apply to the year 2008.Projected benefit obligation, January 1, 2008 (before amendment)..............$560,000Plan assets, January 1,
The following facts apply to the pension plan of Trudy Borke Inc. for the year 2008.Plan assets, January 1, 2008....................................................$490,000Projected benefit
Using the information in E16-9, prepare a pension worksheet inserting January 1, 2008, balances, showing December 31, 2008, balances and the journal entry recording pension expense.Service
Briefly explain the accounting requirements for stock compensation plans under Statement of Financial Accounting Standards No. 123(R).
The amount of income taxes due to the government for a period of time is rarely the amount reported on the income statement for that period as income tax expense.Instructions(a) Explain the
For the following investments identify whether they are:1. Trading Securities2. Available-for-Sale Securities3. Held-to-Maturity SecuritiesEach case is independent of the other.(a) A bond that will
If the bonds in Question 8 are classified as available-for-sale and they have a fair value at December 31, 2008, of $1,802,000, prepare the journal entry (if any) at December 31, 2008, to record this
Presented below is a note disclosure for Ralph Ellison Corporation.Litigation and Environmental: The Company has been notified, or is a named or a potentially responsible party in a number of
On February 1, 2008, one of the huge storage tanks of Paunee Manufacturing Company exploded. Windows in houses and other buildings within a one-mile radius of the explosion were severely damaged, and
Animaniacs Company is a manufacturer of toys. During the year, the following situations arose.1. A safety hazard related to one of its toy products was discovered. It is considered probable that
D’Annunzio Corporation includes the following items in its liabilities at December 31, 2008.1. Notes payable, $25,000,000, due June 30, 2009.2. Deposits from customers on equipment ordered by them
As discussed in the chapter, an important consideration in evaluating current liabilities is a company’s operating cycle. The operating cycle is the average time required to go from cash-to-cash in
The following items are found in the financial statements.(a) Discount on bonds payable(b) Unamortized bond issue costs(c) Gain on repurchase of debt(d) Mortgage payable (payable in equal amounts
How would each of the following items be reported on the balance sheet?(a) Accrued vacation pay.(b) Estimated taxes payable.(c) Service warranties on appliance sales.(d) Bank overdraft.(e) Employee
Showing 1000 - 1100
of 2054
First
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Last