Passive acid tar neutralization process

Details Passive acid tar neutralization process Passive acid tar neutralization process

1996-12-23

1998-09-29

Myers, Helane

Mineral oils: processes and products

Treatment of refining sludge

208179, 208180, C10G 1700

Patent

active

058142061

ABSTRACT:
An improved process for neutralization of acid tars employs a bulk neutralizing agent having a specific gravity greater than that of the acid tar to be neutralized. The bulk neutralizing agent, generally in excess of an amount sufficient to accomplish neutralizing, is spread on top of the acid tar. The neutralizing agent will then begin to sink into the tar. The sinking occurs at a slow rate which is a function of tar viscosity, tar specific gravity, neutralizing agent specific gravity, and temperature. As the neutralizing material sinks into the acidic tar it reacts with the acid neutralizing the tar in situ and depleting the neutralizing agent. Not only does the reaction increase the pH of the tar, it also produces a reaction product with improved physical properties which promotes ease in handling. Depending upon the rate at which the neutralizing agent sinks into the tar and the depth of the tar, an entire mass of acid tar waste can be neutralized in a matter of months or even weeks with no need to actively mix the neutralizing agent and the tar.

REFERENCES:
patent: Re31267 (1983-06-01), Edgar et al.
patent: 4114162 (1978-09-01), Edgar et al.
patent: 5049256 (1991-09-01), Luce
patent: 5234485 (1993-08-01), Bolsing
patent: 5413616 (1995-05-01), Bolsing

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