ammonia process

To avoid/reduce crystalization? To warm the gas? ...steam tracing is obviously there to heat something for some reason...

Check the material MSDS; whatever by products that result may have some type of MSDS handling and storage guidelines which details how to stabilize this during processing.

heat tracing is typically used to prevent condensation to regulate temp and to help maintain constant pressures within piping system. Numerous gases are heat traced with electrical heat trace tape in the semicon industry but I am unfamiliar with the use of steam

OFF TOPIC!

Hey Rummel3, by "...2 Centuries"; do you mean you went to school for 200 years?

Span \Span\, v. t. [imp. & p. p. Spanned; p. pr. & vb. n.
Spanning.] [AS. pannan; akin to D. & G. spannen, OHG.
spannan, Sw. sp["a]nna, Dan. sp[ae]nde, Icel. spenna, and
perh. to Gr. ? to draw, to drag, L. spatium space. [root]170.
Cf. Spin, v. t., Space, Spasm.]
1. To measure by the span of the hand with the fingers
extended, or with the fingers encompassing the object; as,
to span a space or distance; to span a cylinder.

My right hand hath spanned the heavens. --Isa.
xiviii. 13.

2. To reach from one side of to the order; to stretch over as
an arch.

The rivers were spanned by arches of solid masonry.
--prescott.

3. To fetter, as a horse; to hobble.

OK! Let's say that an instrument has a working span of -10°c to 250°c but I'll use it to work from 0°c to 100° establishing my ranges that means that the span will be 100°. Please help to calculate how much education I've got.

Please help to calculate how much education I've got.

Should read: Please help me calculate how much education I have.

or: Please tell me; how educated am I?

I apologize, I didn't mean to start something here. My typing has nothing to do with what I'm thinking. Also, I was just curious about how you came up with that number...that's all. My education means alot to me. If putting in number of years is important to you, I thought, maybe I should do the same.

I think he must mean the 20th and 21st centuries.

This Natural gas line followed by Hydrogen mixing is the outlet stream (46deg C) of MEA absobtion tower, and the inlet of NG Compressor, apprently no need to maintain (with everage 40 deg C amb. temp.) in such a way to provide Steam tracing, only insulation is sufficient. This is provided by Designer (KBR) of ammonia process. Question is why it needed where all NG lines are even without insulation?

Most likely an effort to allow the user to apply heat via instrumentation control and feedback in order to stabilize the superexpandability factor of the gas so that the process design flow calculation(s) requirements can be met.

You would be wise to contact KBR engineering guru(s) and get answers directly from them.

"heat tracing is typically used to prevent condensation to regulate temp and to help maintain constant pressures within piping system. Numerous gases are heat traced with electrical heat trace tape in the semicon industry but I am unfamiliar with the use of steam"

Should read:

Heat tracing is typically used to prevent condensation, to regulate temperature, and to help maintain constant pressures within piping systems. Numerous gases are heat traced with electrical heat trace tape in the semicon industry, but I am unfamiliar with the use of steam.

Ah, just yankin' your chain. But seriously, where does the "2 centuries" come from? I'm guessing that it's some sort of play on words, but I have yet to pick up on it.

This Natural gas line followed by Hydrogen mixing is the outlet stream (46deg C) of MEA absobtion tower, and the inlet of NG Compressor, apprently no need to maintain (with everage 40 deg C amb. temp.) in such a way to provide Steam tracing, only insulation is sufficient. This is provided by Designer (KBR) of ammonia process. Question is why it needed where all NG lines are even without insulation? no matter of condensation here..

It is as Steve adn Rummel say - constant temp and pressure to avoid compressor damage. Heh. My education spans two millenia, and so there!

Excellent reply on both points.