Page 14 - Apollo - Industrial Applications Guide

INTRODUCTION:

Ammonia (also referred to as Azane) is a widely used gas. It greatly assists
in the nutritional needs of many agricultural related organisms and is a key MARKETS:
component to many fertilizers and therefore important to our food supply. It
is also a common ingredient in many cleaning agents, and used extensively Refrigeration
for refrigeration, the manufacture of commercial chemicals, and laboratory Cleaning products
reagents in pharmaceutical plants.
Pharmaceutical
General Manufacturing
CHARACTERISTICS: SCR units for Power
Chemical
Ammonia is a colorless, very pungent, suffocating, highly water-soluble,
gaseous compound that is both caustic and dangerous. Anhydrous (Dry)
Ammonia has to be stored under high pressure or at low temperatures in order
to remain in liquid form. It is most commonly used for commercial purposes MATERIALS:
in the anhydrous state as it is less expensive this way. Commercial grade
anhydrous ammonia ranges from 99.5 - 99.7% pure, with a minimum 0.3% Past experience shows Carbon
water content. Aqueous ammonia or ammonia hydroxide can be specified and Steel and Stainless Steel to be the
purchased over a range of ammonia contents. It is generally considered safer to most common material utilized
transport. Aqueous Ammonia is a solution with water and is more commonly for metallic components like
recognized by the average person in the form of household ammonia or valve bodies, bonnets, retainers,
ammonium hydroxide. and trim materials (ball and
stem). Sealing components like
seats, stem packing and body
GENERAL NOTE: Be aware that when ammonia is being handled in a liquid state and where seals are generally PTFE based
the media can potentially become trapped. Any thermal changes can require that valves and materials. It is always good to
other retaining vessels be vented or have means/method and a path for media expansion. check compatibility/acceptability
of selected materials based off
specific application data like
concentrations, temperatures and
pressures.

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