# US 2019/0316612 A1 · Baffle device for improving flow deviation of fluid

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- Number: US 2019/0316612 A1
- Document ID: US20190316612A1
- Status: Published application
- Kind: A1
- Application number: 16/461,257
- Filed: 2018-01-17
- Published: 2019-10-17
- Earliest claimed: 2017-05-24
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Junyoung LEE; Jun Won CHOI; Chang Hun YU; Ye Hoon IM
- Web page: https://patentgrep.com/patent/US20190316612A1

## CPC

- F15D 1/0005: {Baffle plates}
- B01D 53/9431: {Processes characterised by a specific device}
- F15D 1/02: in pipes or conduits
- F15D: FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

A baffle apparatus for improving a flow deviation of a fluid due to the enlargement of a flow cross-section of the fluid including a plurality of baffle members. Each of the plurality of baffle members has a first part into which the fluid enters and a second part from which the fluid flows out, the first part and the second part are integrated, the first part of each of the plurality of baffle members is at a position where the flow cross-section of the fluid is enlarged and the second part of each of the plurality of baffle members is at the position where the flow cross-section of the fluid is constant, and ends of the first parts are spaced apart from each other by a distance satisfying the equation: d i = D f  ( i )  ∑ i = 1 n  1 f  ( i ) , and the second parts are spaced apart from each other by a uniform distance.

## Claims

### Claim 1

A baffle apparatus for improving a flow deviation of a fluid due to the enlargement of a flow cross-section of the fluid,
which comprises the baffle apparatus comprising a plurality of baffle members,
wherein each of the plurality of baffle members has a first part into which a fluid enters and a second part from which the fluid flows out, the first part and the second part being integrated,
wherein the first part of each of the plurality of baffle members is at a position where the flow cross-section of the fluid is enlarged and the second part of each of the plurality of baffle members is at the position where the flow cross-section of the fluid is constant, and
wherein ends of the first parts of the plurality of baffle members are spaced apart from each other by a distance satisfying the following Equation (1)
d
i
=
D
f

(
i
)

∑
i
=
1
n

1
f

(
i
)
(
1
)
wherein i is an integer of 1 to n, n is the number of the baffle members, f(i) is the velocity of the fluid in the i-th baffle member, and D is a distance of the part that the cross section of the fluid flow is constant, and
wherein the second parts of the plurality of baffle members are spaced apart from each other by a uniform distance.

### Claim 2 (depends on 1)

The baffle apparatus for improving a flow deviation according to claim 1, wherein the flow cross-section of the fluid is enlarged horizontally and the plurality of baffle members are vertically extended.

### Claim 3 (depends on 1)

The baffle apparatus for improving a flow deviation according to claim 1, wherein the flow cross-section of the fluid is enlarged vertically and the plurality of baffle members are horizontally extended.

### Claim 4 (depends on 1)

The baffle apparatus for improving a flow deviation according to claim 1, wherein the flow cross-section of the fluid is enlarged vertically and horizontally and the plurality of baffle members are in the form of a grid.

### Claim 5 (depends on 1)

The baffle apparatus for improving a flow deviation according to claim 1, which is equipped in a front end of an ammonia injection grid of a heat recovery steam generator wherein the baffle apparatus is spaced apart from a catalytic layer of the heat recovery steam generator by predetermined distance.

### Claim 6 (depends on 1)

The baffle apparatus for improving a flow deviation according to claim 1, which is equipped in the front end of an ammonia injection grid of a selective catalytic reduction system, wherein the baffle apparatus is spaced apart from a catalytic layer of the selective catalyst reducing system in a predetermined distance.