Title:
DRAINING AND CLEANING PIG FOR OIL, GAS, AND PETROCHEMICAL PIPELINES
Document Type and Number:
WIPO Patent Application WO/2022/234551
Kind Code:
A1
Abstract:
Drain and purge pig for oil, gas, and petrochemical pipelines consisting of the following: EPDM, NBR based rubbers, and sulfur and perfur additives. The structural formula is to consider the required compound depending on the pipe size. For instance, mixing 650 grams of EPDM or NBR compound with 150 grams of sulfur and 60 grams of perfur with roller for a 3-inch pipe. Continuing this operation makes a bubble in the compound and the ingredients are completely combined. By putting it in the mold and then in the rubber oven, and raising the temperature to 200 degrees Celsius, a sponge cleaning pig is produced after one hour that could be used in all pipelines, especially for the mentioned conditions. Its dimensions and sizes are also unique (according to the map), which easily passes 90-degree 1.5D bends and completely removes the material through the pipe.
Inventors:
ALMASI PEZHMAN (IR)
ALMASI BITA (IR)
ALMASI BITA (IR)
Application Number:
PCT/IB2022/055254
Publication Date:
November 10, 2022
Filing Date:
June 06, 2022
Export Citation:
Assignee:
ALMASI PEZHMAN (IR)
International Classes:
B08B9/00; B05D5/00; B08B9/027; B29C43/00; B29C45/00; C08K3/06; C08K13/02; C08L15/00; C08L23/16; C09K8/532
Domestic Patent References:
| WO2018057685A1 | 2018-03-29 |
Foreign References:
| CN111320821A | 2020-06-23 | |||
| US7373991B2 | 2008-05-20 | |||
| US20200368794A1 | 2020-11-26 | |||
| US9804607B1 | 2017-10-31 | |||
| US7749308B2 | 2010-07-06 | |||
| US8858732B1 | 2014-10-14 |
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