Estudio Configuración del ECOVIA con Llantas

For guidance on product loading systems planning, design and troubleshooting, the Offsites Section of ExxonMobil Engineering's Project Development Division should be contacted.

Table 1

Rack Occupancy Time For Tank Truck Loading Facilities See note below⁽¹⁾

(1) In the absence of local data, Table 1 may be used to calculate rack occupancy. Occupancy time per truck is the sum of preparation, spout switch time, slow start and stop penalty and filling time. Table assumes that multiple compartments are loaded in sequence.

(2) Period when no loading occurs, including spotting, grounding, spout insertion and withdrawal and document preparation. Types of operation are:

A = Manual document preparation.

B = Local ticket printer.

C = Remote document preparation

(3) Based on a typical truck capacity of approximately 5,000 U.S. gallons (20 m3). Types of operation are:

D = Manual control.

E = Automatic, preset control.

Table 2

Rack Occupancy Time For Rail Car Loading Facilities See note below⁽¹⁾

(1) In the absence of local data, Table 2 may be used to calculate rack occupancy. Occupancy time per rail car is the sum of the four elements plus filling time. Table assumes a single spot per side.

(2) Types of operation are:

A = Single spot per side.

B = “High–speed" operation, single spot per side.

C = Manual control of quantity loaded.

D = Automatic, preset control.

E = Manual document preparation.

F = Local ticket printer.

G = Remote document preparation.

(3) Includes opening hatch, inserting, withdrawing and draining arm and closing hatch.

(4) Time allowed depends on rail car capacity and loading arm size. For C, assume 25 percent of volume loaded at low rate; for D, 12 percent. Take low rates as follows:

100 gpm for 4–inch arm (6.3 dm3/s for 100 mm arm).

250 gpm for 6–inch arm (16 dm3/s for 150 mm arm).

450 gpm for 8–inch arm (28 dm3/s for 200 mm arm).

700 gpm for 10–inch arm (44 dm3/s for 250 mm arm).

Table 3

Carbon Adsorption NR(2) 3 3 (commonly used)

Lean Oil Absorption NR(2) 3 3 (commonly used)

Refrigeration NR(2) 3 (3) 3 (3)

Vapor Destruction

Flares 3 (4) 3 (4) 3 (4)

Thermal Oxidizers 3 3 3

Catalytic Oxidizers 3 3 3

Notes:

(1) Items indicated by a check should be evaluated. Notes indicate known disadvantages. NR indicates not recommended.

(2) Not recommended where vapor is enriched with natural gas, C2, or C3 all of that will not be captured. Enriching vapor by saturation with mogas will result in high recovery loads.

(3) May not meet current emission regulations.

(4) Not permitted in many locations due to regulatory requirements.

Figure 1

Typical Top–Loading Truck Rack

Handrails

Counterbalanced Ramp.

(Folds back unless locked down.)

END VIEW

Loading Arm

Strainer Positive

Displacement Meter Counter and

Ticket Printer

SIDE VIEW

DP23AF01

Figure 2

Marine Loading Control System

Selector Switch

FL (CO)

(CO)FL

(CO)FL

(CI)PL RBV

Berth 1

RBV FIQ FCV

Berth 2

Typical for Each Arm Shoreline

Product Recirculation

Minimum Flow Bypass

Product Loading Pumps Start

Stop 0 0

To/From Product Storage Air Eliminator Strainer Flow Straightener Meter and Counter Flow Controller

Notes:

(1) Refer to Section XV for requirements associated with emergency shutdown and isolation.

Optional for multiple pump installations.

TM

DP23AF02 (2)

FC Note 2

Figure 3

Tank Truck (Or Rail Car) Loading Control System

Product

Water Mov

Pump

I/O

I/O

I/O Mo I/O

v

Filter

Ground

FC V

High Level Cutoff

Alarm

Printer

DP23AF03

Product/Water Level Gauges, Temperature Ind.

Micro Processor

To Admin Computer

Card Reader and Keypad Display Meter with

Pulser and Preset

(PDM or TM) Temperature

Probe

Figure 4

Spring Balanced Pantograph Top Loading Arm

2 6

9

10

6

7

5

3

8 1 2

4

Item No. Description

1 2 3 4 5 6 7 8 9

DP23AF04 10

Counter Balance Swing Joint Spring Balance

Loading Valve Vacuum Breaker Primary Arm Drop Pipe Swing Joint Drop Pipe 150 psi Flange Intermediate Swing Joint Secondary Arm

Figure 5

Counterweighted Hose Loader

Swivel Joint

Swivel Elbow

Dry-Break Coupling and Spacer C

DP23AF05

Truck Fill Coupling

Product From Loading Assembly

Figure 6

“A" Frame Bottom Loading Arm

6

5 8

2 4

1 3

9

7

Item No.

1 2 3 4 5 6 7 8 9

DP23AF06

Description Counter Balance Swing Joint Primary Arm

Apex Swing Joint Secondary Arm Outboard Swing Joint Coupling

Spring Balance Handle Compound Link

Figure 7

Common Manifolding With Stripping Facility For Marine Loading System

Meters Slope

Slope

Min.

Min.

(1) (1)

(1)

(1) (1)

(1)

(1) (1)

(1) (1)

Note:

(1) Soft-seat, double-face valve with integral body bleed.

Loading Arm Vacuum B

reaker To/From O

ther B erths

Stripping Pump To/From

Tankage Slop

Ballast Water Product D

Product C Product B

Product A

Slop Oil Sump

DP23AF07

Figure 8

Layout Of Truck Loading Area

Storehouse

Car Park Fence

Truck Park Loading Racks

Dispatch Office

Queue Queue

Fuel, Oil &

Air Truck Wash

x x x x x x x x

x x x x x x x x x x x x x x x x x x

Queue

DP23AF08

Loaded Truck

Park

Figure 9

Layout Of Rail Car Loading Area

DP23AF09

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Transfer Spur Sorting Spur

Sorting Hump

Marshalling Spur

Fence

Car Pullers Loading Spurs

Loading Racks

Receiving and Shipping Spurs Appro

ach Sp urs

Figure 10

Marine Loading Vapor Emissions Collection

Enriching or Inerting

Gas

SV

Liquid Ring Vacuum Compressor

Seal Water Separation Drum Cooler

Detonation Flame Arrester

Loading Pump

Control

DP23AF10

Vessel

Berth Detonation Flame Arrester

Condensate K/O Drum

Detonation Flame Arrester

Seal Water Pump

Vapor Facilities

Figure 11

Carbon Adsorption Vapor Recovery Facilities (Vacuum Regeneration)

Flame Arrester Exhaust Vapors

Carbon Adsorption

Beds

Vacuum Pump

Separator Recycle

Line

AbsorbentLean

Absorber

AbsorbantRich

DP23AF11

Purge

Air Purge

Air

Product To/From Storage

Detonation Flame Arrester Inlet HC

Vapors from Loading Operations

Figure 12

Carbon Adsorption Vapor Recovery Facilities (Steam Regeneration)

Flame Arrester

Carbon Adsorption

Beds

Condensor

Cooling Water

Water Separator

Low Pressure Steam

DP23AF12

Inlet HC Vapors from

Loading Operations

Detonation Flame Arrester

Recovered Hydrocarbon

Condensate Exhaust

Vapors

Figure 13

Lean Oil Absorption Vapor Recovery Facilities

Inlet HC Vapors from

Loading Operations

Cooler

Exhaust Vapors

Flame Arrester

Absorber Tower

Cooler/

Chiller

Lean Oil from Storage

Rich Oil to Storage

DP23AF13

Figure 14

Refrigeration (Condensation) Vapor Recovery Facilities

Precooler Coil

Exhaust Vapors

Flame Arrester

Defrost Fluid Low Temperature

Refrigeration Unit Inlet HC

Vapors Loadingfrom Operations

Water Hydrocarbon Condensate Precooler

Refrigeration Unit

DP23AF14

Figure 15

Simplified Membrane System ç

Vapor Inlet

Liquid Ring Compressor

Scrubber Tower

Membrane Module

Permeate

Retentate Vent stack

Vacuum pump

Absorbent + recovered Absorbent

inlet

Figure 16

Facilities For Emission Control By Thermal Oxidation

Fuel Gas

Supply Pilot/Fuel

Gas Knockout Drum

TRC Temperature

Controller

Burner

Atmosphere

Combustor

Seal Drum Makeup

Water

Combustion Air Blower Inlet HC

Vapors from Loading Operations

Insulation (Jacketing or Internal Refractory)

DP23AF15

Pilot Valve

Detonation/Flame Arrester

Figure 17

Average Delay Vs. Berth Occupancy For Calibration With Historical Data

10.0

5.0 4.0 3.0

2.0

1.0

.50 .40 .30

.20

.10

.05 .04 .03

.02

.01

.005 .004 .003

.002

.001

.2 .3 .4 .5 .6 .7 .8 .9

Berth Occupancy

Average Delay in Multiples of Average Service Time

Notes:

(1) S is the Number of Berths

(2) Curves are based on a Poisson distribution for arrivals and a constant service time (3) Curves taken from memo 83CMS2-215 to all members of MES from T. B. Sittema

S = 1

S = 2

S = 3

S = 4 S = 5

S = 6 S = 7

S = 8 S = 9

S = 10

DP23AF16

In document Estudio aerodinámico del automóvil del proyecto ECOVIA (página 110-126)