Heated flexible tank for shipping viscous liquid

A technology for thermal insulation pads and heating fluids, applied in liquid distribution, transportation or transfer devices, packaging, distribution devices, etc.

Inactive Publication Date: 2000-09-27
查尔斯·M·纳尔逊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the prior art has been unable to meet the needs of shipping flexible containers such as the fluid containing container shown in U.S. Patent No. 4,454,945

Method used

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  • Heated flexible tank for shipping viscous liquid
  • Heated flexible tank for shipping viscous liquid
  • Heated flexible tank for shipping viscous liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A standard 20-foot long shipping container is equipped with a stable K-factor of 0.14 Btu-in / ft on the floor, sides and ends 2 (BTU-inch / ft 2 ) of two-inch thick isocyanurate foam insulation (with aluminum foil on both sides). The 25 psi insulation compressive strength allows the installer to walk on the insulation without damaging it. The top of the loaded flexible tank was covered with a two inch thick layer of Fiberglass (fiberglass) felt. The average ambient temperature is 55°F.

[0035] Heating mats were installed on the floor insulation and a 23,000 liter R tank was installed on the heating mats. The heating pad does not interfere with the installation of the flex tank. It took two people 45 minutes to insulate and install.

[0036] The flexible tank was filled with 4000 gallons of water at 60°F and the tank was heated to 80°F using a standard domestic water heater. This proved ineffective, and then 50psi / 230°F low pressure steam was used to heat the hose. ...

Embodiment 2

[0042] The second set started with test water at 65°F and direct steam at 25 psi pressure. There was no insulation on the top of the flexible tank, but bottom and side insulation was installed in the container as before. The average ambient temperature is 60°F. During the first 24 hours the temperature rose to 101°F and over the next 24 hours the temperature rose to 122°F.

[0043] The flex tank is emptied. Observations indicated that little wear or tear occurred.

[0044] The test flexible tank and heating pad were refilled in the container and a third set of tests began.

Embodiment 3

[0046] The third set started with test water at 65°F and direct steam at 25 psi pressure. There is no insulation on the top of the flexible tank, but bottom and side insulation is installed in the container as before. The average ambient temperature is 65°F. During the first 24 hours, the temperature of the test water rose to 101°F. And over the next 24 hours, its temperature rose to 122°F.

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PUM

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Abstract

A steel-bodied shipping container (10) having two lockable doors (24, 26), and at one of its ends has an insulation pad (32) positioned on its floor. A heat exchanger pad (40) having a hot water/steam hose (46) embodied therein is positioned on top of the insulation pad, with the inlet/outlet ends (48, 50) of the hose positioned near a first of the end doors. A flexible bladder (30) positioned on top of the heat exchanger pad, is pumped full of a material. The first door is locked and the shipping container shipped. At destination, hot water or steam is pumped through the heat exchanger pad to raise the temperature of the material within the flexible bladder, after which the material is pumped out of the flexible bladder.

Description

Background of the invention [0001] Many fluids are only pumpable when heated above normal ambient temperature. For example, a grain slurry requires a temperature of about 125°F to be readily pumpable. In addition, fluids are often shipped to or pass through cold regions that cause the fluid to become solid or semi-solid and cannot be easily pumped out of its container due to such cold temperatures. The present invention provides methods and devices that enable fluids to be easily pumped out of flexible containers even at reduced temperatures. [0002] current technology [0003] The prior art has long recognized the problem of shipping fluids through regions of the earth that cool down. For example, when shipping a grain slurry, the slurry often must be heated before it can be pumped out of the container. In U.S. Patent No. 302,017 to E.L. Orcutt, reference is made especially to Figure 4 , a steam jacket was placed around the bottom of pot A to allow the syrup to flow eas...

Claims

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Application Information

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IPC IPC(8): B67D7/80B67D7/82F28D1/06
CPCF28D1/06B67D7/80
Inventor 查尔斯·M·纳尔逊
Owner 查尔斯·M·纳尔逊
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