headerdrawing1.jpg (96365 bytes)

Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.

Knowledge for the Sulphuric Acid Industry Line.jpg (1139 bytes)

Sulphuric Acid on the Web

Introduction
General
Equipment Suppliers
Contractor

Instrumentation
Industry News
Maintenance
Acid Traders
Organizations
Fabricators
Conferences

Used Plants
Intellectual Propoerty
Acid Plant Database
Market Information
Library

Technical Manual

Introduction
General

Definitions
Instrumentation
Plant Safety
Metallurgial Processes
Metallurgical
Sulphur Burning
Acid Regeneration
Lead Chamber
Technology
Gas Cleaning
Contact
Strong Acid
Acid Storage
Loading/Unloading

Transportation
Sulphur Systems
Liquid SO2
Boiler Feed Water
Steam Systems

Cooling Water
Effluent Treatment
Utilities
Construction
Maintenance
Inspection
Analytical Procedures
Materials of Construction
Corrosion
Properties
Vendor Data

DKL Engineering, Inc.

Handbook of Sulphuric Acid Manufacturing
Order Form
Preface
Contents
Feedback

Sulphuric Acid Decolourization
Order Form
Preface
Table of Contents

Process Engineering Data Sheets - PEDS
Order Form
Table of Contents

Introduction

Bibliography of Sulphuric Acid Technology
Order Form

Preface
Contents

Sulphuric Acid Plant Specifications
 

Google Search new2.gif (111 bytes)

log 2.JPG (76785 bytes)

Sharplex.jpg (28953 bytes)

MAHLEInd.jpg (21078 bytes)

 


Storage/Loading/Unloading - Tank Car
April 2, 2008

Introduction
New Regulations
        Integrity of Top Fittings
        Pressure Relief Valves
Associated Links

Loading Procedure
Air Unloading Procedure
Pump Unloading Procedure
Tank Car Inspection

UTLX Tank Car - History of Tank Cars

IntroductionUnittrain.jpg (45526 bytes)

The transportation of sulphuric acid over large distances is a requirement since the acid is rarely produced in the vicinity of its use.  One of the most effective means of moving large quantities of acid overland is using rail tank cars.   The most economical way to transport acid by rail is the use of unit trains.   Unit trains are dedicate trains consisting of 36 to 56 tank cars (3600 to 5600 tons) that move acid from the production site to storage depots located in the heart of the market areas.  From the storage depots acid can be further distributed by rail tank car or by tank trucks

 

 

Two sizes of tank cars are in general use; 50 and 100 ton tank cars.

50toncar.JPG (45687 bytes)

7,000 US Gallon Capacity - DOT 103AW (50 ton)

100toncar.jpg (30646 bytes)

13,350 US Gallon Capacity - DOT 111A100W2 (100 ton)

Tank cars carrying sulphuric acid generally are equipped with the following:

manway.jpg (25437 bytes)dome.jpg (17202 bytes)

 

 

 

 

 

 

 

 

 

 

New Regulations

Integrity of Top Fittings

The Association of American Railroads (AAR) has adopted a requirement that new and existing sulphuric acid cars be equipped to provide improved top fittings integrity.   This is an effort to enhance the durability of top fittings if cars roll over in an accident.  In a typical derailment, product is loss when top fittings become damaged.

Improved integrity of the top fittings can be provided in a number of ways.   One option is to lower the profile of the top fittings so they are better protected.  Structural protective devices can be used in combination with the lower profile.  AAR document CPC-1117 details these requirements.

Regulations require that the retrofits to existing tank cars be completed in ten (10) years.

Pressure Relief Valves

The AAR has adopted a requirement that 35 psi pressure relief valves be removed from tanks in hazardous materials service.  These pressure relief valves have been the cause of non-accidental releases of materials which have been implicated in injuries to railway personnel.  AAR document CPC-1119 provides details.  The 35 psi pressure relief valve is to be replaced with a new pressure relief valve set at 75 psi.