Injector mixer for a compact gasification reactor system

Patent metadata

Field	Value
Publication number	US-10816192-B2
Application number	US-201815919789-A
Country	US
Kind code	B2
Filing date	Mar 13, 2018
Priority date	May 31, 2011
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

An injector mixer for a gasification reactor system that utilizes reactants includes an injector body that extends between a first face and a second face. The injector body includes a first passage that extends between the first face and the second face and has a first central axis. At least one second, impinging passage extends between the first face and second face and has an associated second central axis that has an angle with the first axis. The angle satisfies mixing efficiency Equation (I) disclosed herein.

First claim

What is claimed is:

1. A method of maintaining mixing efficiency between reactants injected through an injector mixer comprising an injector body that extends between a first face and a second face, the injector body including a first passage extending between the first face and the second face and having a first central axis, and at least one second, impinging passage extending between the first face and the second face and having an associated second axis that has an angle θ with the first axis, the method comprising:
increasing a pressure of a fuel material reactant by moving the fuel material reactant through a dry solids pump;
establishing gasification parameter variables {dot over (m)} stox , {dot over (m)} fuel , ρ stox , ρ fuel , A fuel , and A stox to satisfy mixing efficiency Equation (I):

2
≤

2
⁢

⁢
sin
⁢

⁢

θ
⁡

(

m
.

stox

m
.

fuel

)

2

⁢

⁢

(

ρ
fuel

ρ
stox

)

⁢

⁢

(

A
fuel

A
stox

)

3.1

≤
7

Eq
.

⁢

(
I
)

where, {dot over (m)} stox is the mass flow rate of oxidant reactant through the at least one second passage;
{dot over (m)} fuel is the mass flow rate of the fuel material reactant through the first passage;
ρ stox is the density of the oxidant reactant;
ρ fuel is the density of the fuel material reactant;
A fuel is the cross-sectional area of the first passage; and
A stox is the total cross-sectional area of the at least one second passage; and
wherein the angle θ is not equal to 30°;
feeding the fuel material reactant through the first passage and the oxidant reactant through the at least one second passage according to the established gasification parameter variables.

2. The method as recited in claim 1 , wherein the at least one second passage of the injector mixer includes four second passages that are circumferentially arranged around the first passage.

3. The method as recited in claim 1 , including establishing the angle to be less than 30°.

4. The method as recited in claim 1 , including establishing a point in space beyond the first face of the injector mixer at which the first axis and the second axes intersect, and establishing the point to be at a distance of greater than 1.94 inches/4.93 centimeters from the first face.

5. The method as recited in claim 1 , including establishing the area ratio A fuel /A stox be from 1 to 2.

6. The method as recited in claim 1 , including establishing a cold gas efficiency of at least 80%.

7. The method as recited in claim 1 , including establishing a cold gas efficiency of at least 90%.

8. The method as recited in claim 1 , including establishing a cold gas efficiency of at least 92%.

9. A method of establishing a targeted mixing efficiency between reactants injected through an injector mixer comprising an injector body that extends between a first face and a second face, the injector body including a first passage extending between the first face and the second face and having a first central axis, and at least one second, impinging passage extending between the first face and the second face and having an associated second axis that has an angle θ with the first axis, the method comprising:
increasing a pressure of a fuel material reactant by moving the fuel material reactant through a dry solids pump;
establishing gasification parameter variables {dot over (m)} stox , {dot over (m)} fuel , ρ stox , ρ fuel , A fuel , and A stox ;
adjusting at least one of the gasification parameter variables to satisfy mixing efficiency Equation (I):

2
≤

2
⁢

⁢
sin
⁢

⁢

θ
⁡

(

m
.

stox

m
.

fuel

)

2

Assignees

• Gas Technology Inst

Inventors

• Sonwane Chandrashekhar
• Sprouse Kenneth M

Classifications

• F23D1/00 Primary

  Burners for combustion of pulverulent fuel · CPC title

• B01F25/30

  Injector mixers (mixing by creating vortex flow B01F25/10) · CPC title

• C10J3/506

  for entrained flow gasifiers · CPC title

• C10J2200/152

  Nozzles or lances for introducing gas, liquids or suspensions · CPC title

• F23D1/005 Primary

  burning a mixture of pulverulent fuel delivered as a slurry, i.e. comprising a carrying liquid · CPC title