Preview

Pc 2010 4H

Satisfactory Essays
Open Document
Open Document
358 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Pc 2010 4H
第4回

プロセス制御レポート

教科書 p.51 [2][3]
[2]
ナフサを加熱炉で加熱分解する図 2.28 のようなプロセスがある。この加熱炉において、以
下のような制御ループ(多重制御構造)を考えた。その P&I ダイアグラムを図 2.28 に描け。
(図中、レシオコントローラは RC で表し、伝送器の計装記号は省略してよい。

(a) 加熱炉出口の分解ナフサの温度は燃料油流量を調整して制御する。
(b) 燃料油の流量制御は、燃料油流量を測定してバルブ開度を調節して行う。
(c) 3系列のパイプラインを流れる流量が等しくなるように制御する。
(d) 加熱炉での総処理量は原料ナフサ流量で調節する。

RC
FC

ナフサ
TC

RC

FC
燃料油

図2.28 ナフサ分解炉

[3]
図 2.29 のように、高圧の蒸気が流れるパイプライン(管路)と低圧の蒸気が流れるパイプ
ラインシステムがある。以下の2つの操作を実現するオーバーライド制御系を、high
selector switch と圧力センサとコントローラを使って実現せよ。
(a) 低圧蒸気の需要が現状の供給量より上回る場合、高圧蒸気のラインから蒸気を低圧蒸
気のラインに流して需要を満たす。このとき、高圧蒸気のラインから低圧蒸気ライン
に流す蒸気の量は低圧蒸気の圧力がある所定の値(設定値)になるように決める。
(b) 高圧蒸気の圧力が規定の上限値を超えそうになる場合は緊急避難に、高圧蒸気の圧力
を上限値以下に戻すように、高圧蒸気ラインから低圧蒸気ラインに蒸気を流す。

HSS :High selector switch
PC

高圧蒸気のライン

低圧蒸気のライン
図2.29 スチーム用役系のオーバライド制御

:Pressure controller

鉄鋼の高炉制御について調査し、A4、1 枚程度にまとめよ。
必ず、出典(参考文献等)を記述すること。(参考:鉄鋼における制御、など)

No.4 Process Control Homework
Text p.51 [2] [3]
[2]
The process in Fig.2.28 heats and cracks the naphtha in heating oven. Consider the following control loops (Multiloop control):
(a) Control the outlet temperature of cracked naphtha in heating oven by coordinating the fuel oil flow rate.
(b) Control the fuel oil flow rate by coordinating the opening of valve and measuring the fuel oil flow rate.

(c) Control so that the flow rate in the three pipelines become equal.
(d) Control the total throughput in heating oven by coordinating the naphtha flow rate of raw material.
Draw the P&I diagram in Fig.2.28. In other words, draw the flow of the signal in the
Fig.2.28 to meet those requirements. (In figure the RC imply ratio controller. You may omit the instrumentation sign of the transmitter.)

RC
FC

Naphtha
TC

RC

FC
Fuel oil

Fig.2.28 Naphtha cracking furnace

[3]
There are the high pressure steam pipeline and the low pressure steam pipeline in
Fig.2.29. Draw override control system in Fig.2.29 in order to achieve the following operations by using a high selector switch, controllers and pressure sensors:
(a) When the demand for the low

You May Also Find These Documents Helpful

  • Satisfactory Essays

    ECT122 W3 ILab 2

    • 279 Words
    • 2 Pages

    2. Download the Multisim file “Series2” from Doc Sharing, Week 3. Simulate the circuit. Use an XMM to measure the following values.…

    • 279 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Nt1310 Week 4 Lab Report

    • 925 Words
    • 4 Pages

    24. Calculate the magnitude and phase angle of the circuit impedance shown in Figure 11.39b.…

    • 925 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    M19 Lab

    • 548 Words
    • 3 Pages

    3. Calculate and record the total impedance (ZT) of the circuit. (ZT = R - j XC = z ∠Ѳ)…

    • 548 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    nt1420

    • 272 Words
    • 2 Pages

    1. a. Scp is the "Secure Copy" program and it works just like the "cp", or "Copy" program, only it works through via the Secure Shell.…

    • 272 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    NT 1210 Lab 4

    • 667 Words
    • 3 Pages

    Hospitals, security systems, PA & recording studios. The drawback of STP cables is that they will increase the total cost of an installation. STP cables are more expensive due to the shielding, which is an additional material that goes into every meter of the cable. The shielding also makes the cable heavier and stiffer. Thus, it is more difficult to handle.…

    • 667 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Win 210 Lab

    • 678 Words
    • 3 Pages

    1. Which of the following are advantages of IPv6 over IPv4? (Choose all that apply.)…

    • 678 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Hello Dr. DeVoe and classmates, currently working on a surgical intensive care unit (SICU) for the past 7 years, before that worked on an open heart ICU for 16 years. I have been a nurse for over 30 years and started as an LPN and achieved my BSN in the year 2000. Have been a preceptor for many years but have no experience in curriculum development, so this will be a new journey for me. Live in Queens in NYC, care for my mother who has Alzheimer's disease. Have only one son and have an 18 year old granddaughter who is attending college, with a goal to be a nurse. Looking forward to learning from this class and…

    • 119 Words
    • 1 Page
    Good Essays
  • Good Essays

    Unit 12 Ass 1

    • 967 Words
    • 6 Pages

    You must submit your own hand drawn diagram to help illustrate this, but it must be accompanied by written descriptions of each of the parts where…

    • 967 Words
    • 6 Pages
    Good Essays
  • Satisfactory Essays

    4R_computer_

    • 438 Words
    • 1 Page

    1. A friend is preparing to give a presentation at work. List at least three tips you would give her to help her prepare. Explain in 1-3 sentences. (3.0 points) Remaining calm and staying on topic are two important tips for a successful presentation because it help us reach the words out properly, and clearly. Although, the phrase, ‘think before you speak’ is the most important tip, since a successful presentation requires the person to show his/her understanding of something.…

    • 438 Words
    • 1 Page
    Satisfactory Essays
  • Satisfactory Essays

    comp 4

    • 464 Words
    • 2 Pages

    As a CDA candidate it is my job to establish positive and productive relationships with each child’s families. This means that candidates must establish a positive, responsive and cooperative relationship with each parent. I must engage in two-way communication with families, encourage their involvement in the program and to also support the child’s relationship with his or her own family.I believe that is important to establish trust and respect, as well as keeping open communications with the parents and or guardians of the children in your care at all times. This should be done by welcoming the parents/ guardians while picking up and dropping off children. Also the parents should be kept aware of all that is happening in their child’s classroom.…

    • 464 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Strategy Note

    • 311 Words
    • 2 Pages

    When completed, please email your answer document to jporac@stern.nyu.edu no later than 9 am on Monday, Jan 21st 2013. Label your document file with your last name, as in YOURLASTNAME_Exam. Please only send in a single file with all diagrams included. Only a .doc or .pdf file will be accepted.…

    • 311 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Marriott Rooms Forecasting

    • 2499 Words
    • 10 Pages

    In the case of the Hamilton hotel, Snow needs to make a decision as to if 60 additional rooms reservations should be accepted which could lead to overbooking (Weatherford & Bodily,1990). It is a problem of capacity utilization that is being faced in this particular case where revenue maximization is aimed while minimizing customer dissatisfaction.…

    • 2499 Words
    • 10 Pages
    Good Essays
  • Powerful Essays

    4. Compare Figures 1-2 and 1-4. Can you match steps in Figure 1-4 with phases in Figure 1-2? How might you explain the differences between the two figures?…

    • 988 Words
    • 4 Pages
    Powerful Essays
  • Satisfactory Essays

    Information Theory

    • 312 Words
    • 2 Pages

    ii) Find the overall channel matrix of the resultant channel and then draw the equivalent channel diagram.…

    • 312 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Current Source and Figure

    • 2872 Words
    • 12 Pages

    2-1. For the controlled (monitored) source shown in the figure, prepare a plot similar to that given in Fig. 2-8(b).…

    • 2872 Words
    • 12 Pages
    Good Essays