User Account

All Pages

Appropriate symbols from tables

Assignment Help Other Engineering
Reference no: EM13876999

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 pipeline. A total of 170.000 SCFH (based on 60SF and 14.7 psia) of natural gas containing 18% N2, 75% CH4, and 7% C2H6 at 100°F and 800 psia is to be processed for Nr removal. A two-step separation process has been proposed consisting of (1) membrane separation with a nonporous glassy polyimide 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 (SPN2,CH4 = 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 non-permeate (retentate) 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. 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 C2H6 in lbmol/h for all process streams entering and exiting the two separation operations. Place the results in a material-balance table similar to Table.

Reference no: EM13876999

Questions Cloud

What was the actual operating income for the period : What was the actual operating income for the period? What was the company's master budget operating income for the period?
Research and analysis of the constitutional principles : The thesis of your essay will be a statement of the decision, regarding these issues, which the Court should make, according to your research and analysis of the constitutional principles, Court precedents, facts of the case, and other relevant in..
Determine the standard direct materials cost for one package : Rusty has a policy of taking all discounts offered. Determine the standard direct materials cost for one package of SS-2.
What would be the value of equipment after 25 years : A company has 25 million dollars' worth of equipment. This company depreciates the value of the equipment at the rate of 10 % per year. How long does it takes for the value of the equipment to drop to 50 % of its original value
Appropriate symbols from tables : Draw a process-flow diagram of the separation process using appropriate symbols from Tables. Include the gas compressors and heat exchangers. Label the diagram with all of the data given above, and number all process streams.
Determine standard direct materials cost for one bag : The company's stated policy is to take all available cash discounts. Determine the standard direct materials cost for one bag of Insect-Be-Gone.
Religious paper - islam : Religious paper topic: islam. The student will understand the relationship between cultutre and religious expressions of basic human aspirations. The student will analyze the religous theory
How many years does this city''s population doubles : The population of a city at a certain time is P. If the annual rate of growth of the population is 2 %, after how many years does this city's population doubles? What if the rate is 2.5 %
What was steinbergs direct materials purchase-price variance : What was Steinberg's direct materials purchase-price variance and its direct materials usage variance for March? Give the appropriate journal entries for March.

Reviews

Write a Review

Other Engineering Questions & Answers

  Hydrogen storage and delivery system for automotive

You have been asked by your supervisor, the Director of Engineering Development, to explore the possibility of using a hydrogen fuel cell in place of the batteries in an electric vehicle.

  What is meant by point-of-operation guards

What is meant by point-of-operation guards and What are the three types of point of operation guards? What are their advantages and limitations and Briefly describe four requirements that all safeguards should have.

  How can a fieldbus system be implemented

How can a fieldbus system be implemented in an existing HART system - how can multiple variables be measured using a single fieldbus instrument?

  The implementation of an integrated is solution

Design a risk matrix to show the likelihood and the impacts of the risks of the failures of the critical IS What is the role of Business Process Re-engineering in the implementation of an integrated IS solution

  Analyze what would happen if an element was weak or nonexist

Include specific examples of how the Elements of Power interact together to promote national security. Analyze what would happen if an element was weak or nonexistent. Assess how the elements of national power conflict with each other.

  What are the implications for using a convenience sample

The most common sampling method is the convenience sample, therefore, many of the studies that you find for evidence use this sampling method. What are the implications for using a convenience sample on the way you interpret and use the findings?

  Nodal and mesh analysis and thevinen equivalents

Discuss how the determination of the Thevenin Equivalent circuit simplifies the complex circuits.

  Problem - loan services at a bank

Will hiring the second loan expert decrease the average total time a customer spends in the bank for completing his/her loan request - Human Resources Manager suggested replacing the current loan expert with a new one.

  Find the amount of each cash flow in an equal quarterly cash

The first cash flow of a 25-year series of quarterly cash flows is equal to $35,000. Each cash flow in the series increases by $800. Find the amount of each cash flow in an equal quarterly cash flow series that is equivalent to the increasing cash..

  Mass flow rate of isobutane

(a) The mass flow rate of isobutane in the binary cycle, (b) The net power outputs of both the flashing and the binary sections of the plant, and (c) The thermal efficiencies of the binary cycle and the combined plant.

  Complete the pencil holder project in detail

You are required to brainstorm 50 ideas for your project. You are encouraged to ask your colleagues and friends to participate in this session with you. A good group size is four people and only one of those people may come from this class.

  Question 1 a for the reciprocal lattice we know

question 1 a for the reciprocal lattice we know thatexpjg.r 1where g.r 2pit t an integerr lambnc real-spacedirect

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd