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US 11,697,042 B2Granted
Apparatus for diluting and applying firefighting chemical
AssigneeEarthclean Corporation
InventorTerrence L. Lund
Life of this patent
Estimating the term…
Abstract
This relates to apparatus that can form dilute aqueous firefighting compositions from an aqueous concentrate.
Claims8
An apparatus that dilutes and applies a firefighting chemical to an ignition source, the apparatus comprises:
- (i) a three-way conduit with a first input, a second input, and an output;
- (ii) a diluent source having an outlet fluidly connected to the first input of the three-way conduit;
- (iii) a source of a concentrate fluidly connected to the second input of the three-way conduit;
- and
- (iv) a connecting conduit having a first end and a second end, the first end fluidly connected to the output of the three-way conduit;
- wherein the second end of the connecting conduit is connected to a first pump that both causes the flow through the three-way conduit and connecting conduit and dispenses a uniform dilute firefighting chemical, the first pump set at a flow rate of R1;
- wherein a second pump for the concentrate is set at a second flow rate R2 where R2 is greater than R1, and the R1 and R2 rates are set to deliver a useful dilution of about 0.01 to 5 wt. % of concentrate in the dilution liquid, the diluent comprises service water and the concentrate comprises a non-aqueous liquid comprising starch, a thickener, and a C2-25 hydrocarbon, and the diluent and concentrate is mixed in the first pump, and
- wherein the concentrate comprises at least 20 wt. % of a starch;
- at least 20 wt. % of a pseudo plastic, sodium polyacrylate suspending agent;
- vegetable oil and a C6-18 olefin;
- and 0.0 to 5 wt. % clay and the firefighting chemical is a dispersion of 0.01 to 1 wt. % in water.
8 more elements
A process for diluting a firefighting chemical for the purpose of delivering the chemical to an ignition source, the process comprises:
- (i) directing a flow of a diluent through the first input of a three-way connector,
- (ii) directing a flow of a concentrate through a second input of a three-way connector,
- (iii) directing the flow of the diluent and a concentrate from the three-way connector into the inlet of a pump, and
- (iv) directing the output of the pump comprising the firefighting chemical onto the ignition source;
- wherein the diluent has a viscosity substantially the same as ground or service water, the concentrate has a viscosity of greater than 1000 to 30000 cP at 25° C.;
- wherein the first pump has a rate of about 1 to 2000 gal-min-1 (R1) and the second pump has a rate of 1-2000 gal-min.−1(R2) wherein R2 is greater than R1;
- wherein the concentrate comprises at least 20 wt. % of a starch;
- at least 20 wt. % of a pseudo plastic, sodium polyacrylate suspending agent;
- vegetable oil, C6-18 olefin;
- and 0.0 to 5 wt. % clay and the firefighting chemical is a dispersion of 0.01 to 1 wt. % in water and the firefighting chemical is a gel.
7 more elements
Dependencies are inferred from the claim text.