US2012111315A1PendingUtilityA1
In-situ vaporizer and recuperator for alternating flow device
Individually held — no corporate assignee on recordPriority: Nov 9, 2010Filed: Nov 4, 2011Published: May 10, 2012
Est. expiryNov 9, 2030(~4.3 yrs left)· nominal 20-yr term from priority
B01J 8/06B01J 19/24F23D 3/00B01B 1/00B01J 2219/2466B01J 2219/00873B01J 2219/247B01J 2219/2453B01J 2219/00835C01B 2203/0822C01B 2203/0233C01B 2203/1288B01J 2219/00797B01J 2219/2459B01J 19/249B01J 2219/2485C01B 3/46B01J 2219/00822B01J 2219/2497B01J 2219/0086Y02P20/10F23K 5/22C01B 2203/1276B01J 2219/2454Y02E60/32B01B 1/005B01J 19/0093B01J 2219/0079B01J 2219/2477B01J 2219/00783
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Claims
Abstract
The present invention relates to a device for converting a liquid feed stream to a gaseous vapor stream comprising: (a) channel means having a first and second end, said channel means having a plurality of channels connecting said first and second end, said channel means having a substantially solid region and a void region, (b) inlet means for directing the liquid feed stream to the first end of the plurality of channels, and (c) outlet means for directing the gaseous vapor stream from said plurality of channels, where said channels have, at any distance d between the inlet and outlet, a geometric configuration, perpendicular to the feed flow direction, wherein the average void fraction ranges from about 0.3 to about 0.95.
Claims
exact text as granted — not AI-modified1 . A device for converting a liquid feed stream to a gaseous vapor stream comprising:
(a) channel means having a first and second end, said channel means having a plurality of channels connecting said first and second end, said channel means having a substantially solid region and a void region, (b) inlet means for directing the liquid feed stream to the first end of the plurality of channels, and (c) outlet means for directing the gaseous vapor stream from said plurality of channels, where said channels have, at any distance d between the inlet and outlet, a geometric configuration, perpendicular to the feed flow direction characterized by 1. a void area A′(x) and, 2-channel total cross-sectional area A(x), where the void area A′(x) as a fraction of the total area A(x) is
φ
x
=
void
fraction
at
distance
d
=
A
′
(
x
)
A
(
x
)
and a average void fraction along a length of device L
φ
a
=
average
void
fraction
=
∫
O
L
A
′
(
x
)
x
∫
O
L
A
(
x
)
x
said average void fraction ranging from about 0.3 to about 0.95.
2 . The device of claim 1 where the void fraction varies along the length of the device from a void fraction at the inlet means ranging from about 0.5 to about 0.995, to a void fraction at the outlet means ranging from about 0.2 to about 0.7.
3 . The device of claim 2 wherein the void fraction variation along the length of the device ranging from about 0.01 to about 0.5 void fraction decrease per linear inch of length.
4 . The device of claim 3 wherein the variation ranges from about 0.15 to about 0.35 void fraction decrease per linear inch of length.
5 . The device of claim 1 where the void fraction decreases from the inlet means to the outlet means in sequential constant void fraction regions numbering greater than one and less than twenty.
6 . The device of claim 5 where the number of constant void fraction regions ranges from three to ten.
7 . The device of claim 1 wherein the channels are further characterized as having a channel hydraulic diameter, d H , that ranges from about 0.1 to about 10.0 millimeters at the inlet, to about 0.2 to about 0.5 at the outlet, and a channel length.
8 . The device of claim 7 wherein the channel hydraulic diameter ranges from about 0.3 to about 5.0 millimeters at the inlet, to about 0.4 to about 2.0 millimeters at the outlet.
9 . The device of claim 7 wherein the ratio of the channel hydraulic diameter to channel length is between about 0.5 and about 10,000.
10 . The device of claim 9 where the ratio is between about 10 and about 5000.
11 . The device of claim 10 where the ratio is between about 40 and about 200.
12 . The device of claim 1 where the channels are further characterized as having an average surface area per unit volume S v , avg ranging from about 10 in 2 /in 3 to about 2000 in 2 /in 3 .
13 . The device of claim 12 where S v , avg ranges from about 20 in 2 /in 3 to about 1000 in 2 /in 3 .
14 . The device of claim 13 where S v , avg ranges from about 50 in 2 /in 3 to about 250 in 2 /in 3 .
15 . The device of claim 1 wherein the channels are made of materials having a thermal heat capacity of at least 100 J/Kg-K, therm and conductivity of at least about 10 W/m-K, and density of at least about 2500 Kg/m 3 .
16 . The device of claim 15 wherein the thermal heat capacity is at least about 500 J/Kg, thermal conductivity of at least about 50 W/m-K, and density of at least about 5000 Kg/m 3 .
17 . The device of claim 16 wherein the thermal heat capacity is at least about 100 J/kg, thermal conductivity of at least about 200 W/m-K, and density of at least about 7000 Kg/m 3 .
18 . The device of claim 1 wherein the device operates at a gaseous hourly space velocity greater than about 500.
19 . The device of claim 18 wherein the device operates at a gaseous space velocity above about 1000.
20 . The device of claim 1 wherein the channels have a pressure drop, Δp, that is less than about 5 psi/inch.
21 . The device of claim 20 wherein Δp is less than about 1 psi/inch.Join the waitlist — get patent alerts
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