asc bab vi sistem proses n instumentasi.docx

BAB VI

SISTEM PEMROSES DAN INSTRUMENTASI

6.1 Spesifikasi Alat Utama di VCM-1

6.1.1 Ethylene System

6.1.1.1 Sistem Pemroses Penyimpanan dan Pemanfaatan Etilen

Tabel 6. 1 Sistem pemroses penyimpanan dan pemanfaatan etilen

No Kode Alat Nama Alat Spesifikasi Kondisi Operasi Pengendalian

1 ST-2101 Ethylene tank Kapasitas

18000m3

T: -130oC LIC,PIC

2 HE-2101A Brine cooler BKU LIC

3 HE-2101B Ethylene liquid cooler BEU TIC

4 HE-2201 Ethylene heater CEU

5 HE-2302 Vent condenser

6 HE-2407 Vcm absorber condenser

7 HE-2450 Ethylene refrigerant

economizer

BKU LIC

8 HE-2452 Vcm refrigerant

subcooler

CEU

9 HE-2453 Ethylene vaporizer CEU

10 PU-2101A/B Send out pump Sentrifugal

11 DP-2101 Brine system start up

heater

Double pipe

6.1.1.2 Sistem Pemroses Penanganan BOG

Tabel 6. 2 Sistem pemroses penanganan BOG


1 ST-2101 Ethylene tank T:103oC

P: 550-800 mmH2O

LIC,PIC

2 HE-2102 Ethylene condenser LIC

3 HE-2103 BOG refrigerant

condenser

AEL

4 HE-2104 Heat exchanger Shell and

tube

42

43

5 HE-2105 High level ethylene

chiller

BKU LIC


6 HE-2108 Suction heater Brazed plate

and fin

7 HE-2109 Recycle cooler AEU

8 VE-2101 Ethylene BOG

compressor suction drum

9 VE-2102 Vessel Horizontal LIC

10 VE-2106 BOG refrigerant receiver Horizontal

11 CO-2101 BOG compressor Reciprocating

(2stages)

12 CO-2102 BOG refrigerant

compressor

Reciprocating

(1stage)

PIC

13 CO-2103A/B BOG compressor Reciprocating

(1stage)

6.1.2 Sistem Pemroses Area OHC-EDC

6.1.2.1 Sistem Pemroses Sintesis EDC

Sistem pemroses utama dalam sintesis EDC adalah reaktor OHC-EDC. Sistem

pemroses secara lengkap adalah sebagai berikut:

Tabel 6. 3 Sistem pemroses sintesis EDC

No. Kode Alat Nama Alat Spesifikasi Kondisi Operasi Pengendalian

1 RE-2201/51 OHC reactor Fluidized

reactor

T: 400oF

P: 67 psig

TIC, PIC, LIC

2 FU-2201 Reactor start-up heater

3 HE-2201 Ethylene heater BEU T: 180oC PIC

4 HE-2202 Oxygen heater BEU T: 160oC TIC

5 HE-2203 HCl heater BEU

6 HE-2204/54 Primary condenser Shell and tube,

vertikal

7 HE-2205/55 Secondary condenser Shell and tube,

vertikal

8 HE-2206/56 Tertiary condenser Shell and tube,

44

vertikal

9 HE-2207/57 Refrigerated condenser Shell and tube,

vertikal


10 VE-2201/51 Cyclone separator PIC

11 VE-2202/52 Reactor condenser

entrainement separator

Kapasitas

200L

PIC

12 VE-2203/53 Steam drum Kapasitas 3m3 PIC

13 VE-2207/57 Reactor degasser Kapasitas 4m3 LIC

14 PU-2201/51 Cooling water circulation

pump

Sentrifugal

15 SP-2208/58 OHC catalyst big box

16 BL-2201/51 Fluidization air blower

17 EJ-2201/51 Recycle injector FIC

6.1.2.2 Sistem Pemroses Pemisahan Fasa Organik, Air dan Pengeringan Produk

Tabel 6. 4 Sistem pemroses pemisahan fasa organik, fasa cair dan pengeringan produk


1 ST-2201/02 Drying still bottoms tank Kapasitas

100m3

LIC

2 TW-2201 Drying still LIC, TIC

3 HE-2208 Drying still reboiler BEM LIC

4 HE-2209 Drying still condenser BEM

5 HE-2210 Drying still feed bottoms

economizer

BFU FIC

6 HE-2211 Refrigerated vent

condenser

Shell and tube

7 HE-2205 Secondary condenser

8 VE-2208 Intermediate crude EDC

drum

LIC

9 VE-2209 Chloral treatment phase

separator

Kapasitas 7m3 LIC

10 VE-2210 Aqueous surge drum Kapasitas

10m3

LIC

11 VE-2211 Phase separator Kapasitas 6m3 LIC

45

12 VE-2212 Drying still feed tank Kapasitas 3m3

13 PU-2202 Chloral treatment feed Sentrifugal FIC

14 PU-2204 Drying still feed pump Sentrifugal

15 PU-2205 Drying still bottoms

pump

Sentrifugal


16 PU-2210 Chloral treatment

product pump

17 PU-2211 Aqueous transfer pump FIC

18 PU-2212 Formate transfer pump

19 PU-2216 Crude OHC/EDC

transfer

Canned

20 FL-2201/02 Drying still feed filter FIC

21 FL-2203/04 Drying still feed filter

22 LM-2201 Chloral treatment reactor

(piping item)

FIC

23 LM-2202 Aqueous effluent mixer

1st stage (in-line)

AIC, FIC

24 LM-2203 Aqueous effluent mixer

2nd stage (in-line)

AIC, FIC

6.1.3 Sistem Pemroses Area LP-EDC

6.1.3.1 Sintesis EDC pada Reaktor LP-EDC

Tabel 6. 5 Sintesis EDC pada reaktor LP-EDC


1 RE-2301 LP-EDC reactor Tinggi 13,7m T:110oC

P: 11 kg/cm2

LIC

2 HE-2309 Recycle EDC cooler AFC DP=9

DT-104

3 VE-2302 EDC dopp kettle PIC

4 VE-2303 Catalyst Addition Drum

5 ST-2307 Volum 600m3

6 PU-2316/17 Crude EDC rework Sentrifugal

7 PU-2318 EDC dopp pump Sentrifugal

8 SP-2301 Chlorin eliminatr

46

9 FL-2305/06 Tarr filter

6.1.3.2 Pemurnian EDC

Tabel 6. 6 Pemurnian EDC


1 TW-2301 Primary still Ballast tray

Tinggi 30m

PIC

2 TW-2302 Lights still Ballast tray

Tinggi 30m

PIC

3 TW-2303 Heavies still Ballast tray

Tinggi 12,6m

LIC

4 TW-2304 Stripper Ballast tray

Tinggi 26m

LIC

5 HE-2302 Vent condenser BEM

6 HE-2303 Compressor recirculation

cooler

BEM

7 HE-2304 Primary still reboiler BEM FIC

8 HE-2305 Ethylene heater

9 HE-2306 Heavies still reboiler Shell and tube TIC

10 HE-2307 Lights still reboiler

11 HE-2308 Lights still condenser

12 HE-2309 Recycle EDC cooler AFC

13 HE-2310 Furnace feed cooler BEM

14 HE-2311 Stripper condenser BEM

15 VE-2301

16 VE-2304 Primary still reflux drum Kapasitas

17m3

LIC

17 VE-2307 Lights still reflux drum LIC,TIC

18 VE-2308 Product drum LIC

19 VE-2309 Primary botoms drum AIC

20 VE-2312 Vent knock-out drum LIC

21 VE-2318 Heavies still overhead

47

tank

22 VE-2101 Furnace feed receiver Kapasitas

850m3

23 ST-2304/05 Sales day tank Kapasitas

150m3

24 PU-2301 Primary return pump Sentrifugal

25 PU-2302 Heavies still feed pump Canned


26 PU-2303 Heavies still bottoms

pump

Canned FI

27 PU-2305 Primary still reflux pump Sentrifugal

28 PU-2306 Vent condensate pump Sentrifugal

29 PU-2307 EDC product pump Sentrifugal FIC

30 PU-2310 Light still bottoms pump Canned

31 PU-2311 Stripper overhead pump Canned

32 PU-2312 Stripper bottoms pump Canned

33 PU-2313 Sales transfer pump Sentrifugal

34 PU-2314 Furnace feed pump Sentrifugal

35 PU-2315 Heavies still overhead

pump

Canned

36 CO-2301 EDC vent compressor Reciprocating

37 FL-2301 Aftol addition filter

38 FL-2302 Light still reflux filter

39 FL-2304

40 DP-2301 Double pipe

6.1.4 Sistem Pemroses Area VCM

6.1.4.1 Sistem Pemroses EDC Cracking dan Quenching

Tabel 6. 7 Sistem pemroses EDC cracking dan quenching


1 FU-2401/51 Vaporizing cracking

furnace

T 1450oC AI, HC

2 VE-2401 Quench dopp kettle PIC

3 VE-2402 Quench dop kettle

entrainment separator

48

4 VE-2403 Quench dopp kettle

overhead surge drum

LIC

5 HE-2402 Quench condenser AFC TIC

6 HE-2403 Quench dopp kettle

condenser

AFC

7 HE-2411 Feed furnace

economizer

BEM PIC

8 PU-2401 Quench dopp overhead

pump

Sentrifugal


9 FL-2410/11 Qunench dopp kettle

overhead filter

6.1.4.2 Sistem Pemroses Pemurnian VCM

Tabel 6. 8 Sistem pemroses pemurnian VCM


1 TW-2402 Absorber PIC,LIC,TIC

2 TW-2403 Stripper TIC

3 TW-2404 Product still PIC,TIC,LIC

4 HE-2404 Presaturation cooler BKM FIC

5 HE-2405 Upper intercooler BKM TIC

6 HE-2406 Lower intercooler BKM TIC

7 HE-2407 Absorber condenser BEM

8 HE-2408 Stripper reboiler BEM

9 HE-2409 Product still condenser BEM

10 HE-2410 Product still reboiler BEM

11 HE-2414 Secondary lean oil

cooler

BKM

12 VE-2406 Quench liquor drum LIC

13 VE-2407 HCl knockout drum LI

14 VE-2408 VCM tar trailer LIC

15 VE-2409 Product still reflux

drum

16 VE-2411 Humidifier

17 VE-2412/13/14 Product neutralizer

49

18 VE-2415 Neutralizer drain drum

19 VE-2419/20/21 VCM product shift

storage

20 ST-2401 Kapasitas 150m3

21 ST-2501 A/B/C

22 PU-2402 Quench liqour pump Sentrifugal

23 PU-2403 HCl presaturation

pump

Sentrifugal

24 PU-2404 Upper intercooler

pump

Canned

25 PU-2405 Absorber bottoms

pump

Sentrifugal


26 PU-2406 Lower intercooler

pump

Canned

27 PU-2410 Product still reflux

pump

Sentrifugal pump FIC

28 FL-2408 Product filter

29 PT-2402 Coke retention sump Kapasitas 10m3

6.2 Sistem Instrumentasi VCM-1

Instrumentasi yang dipasang pada unit pemroses bergantuk pada tujuan

penggunaan dan objek yang dikendalikan Instrumen-instrumen yang dipasang pada unit

pemroses PT. ASC adalah :

1. Level indicator controller (LIC) pelampung dan lengan gaya

2. Temperature indicator controller (TIC) termokopel dan temperatur

3. Pressure indicator controller (PIC) pressure gauge dan electric strain

gauge

4. Flow indicator controller (FIC) venturimeter, orificemeter, rotameter

5. Analyzer indicator controller (AIC) mengukur konsentrasi cairan dengan

bantuan SG meter

Instrument digunakan untuk mengukur gangguan (disturbance), variabel output

terkontrol dan variabel output sekunder. Instrument merupakan sumber utama informasi

mengenai apa yang terjadi did alma proses. Sedangkan sistem instrumentasi meliputi

50

pengukuran, penampilan, pengontrolan dan perekaman data dari variabel-variabel yang

terlibat dalam proses. Prinsip operasi alat ukut sensor adalah mampu mentransmisikan

nilai dari variabel yang diukur menjadi nilai variable lain yang dapat terbaca.

Instrumentasi yang digunakan pada PT ASC anatar lain alat ukur (sensor) dan

penampilan (indicator), pengontrol (controller), pemberitahuan (alarm) dan perekaman

(recorder). Variabel-variabel yang diukur adalah tekanan, teperatur, laju alir,

konsentrasi dan ketinggian permukaan cairan.

asc bab vi sistem proses n instumentasi.docx

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