US 12,220,690 B2
Method of equipment decontamination
Stephen D. Matza, Sugar Land, TX (US); and Elisa Rice, Houston, TX (US)
Assigned to United Laboratories International, LLC, Houston, TX (US)
Filed by United Laboratories International, LLC, Houston, TX (US)
Filed on Oct. 6, 2020, as Appl. No. 17/064,396.
Application 17/064,396 is a continuation in part of application No. 16/290,679, filed on Mar. 1, 2019, granted, now 11,786,893.
Prior Publication US 2021/0023548 A1, Jan. 28, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 38/58 (2006.01); B01J 29/90 (2006.01)
CPC B01J 38/58 (2013.01) [B01J 29/90 (2013.01)] 20 Claims
 
1. A method of equipment decontamination comprising:
(A) introducing a cleaning stream comprising hydrogen and a solvent composition comprising a hydrocarbon solvent and a cutting fluid into the equipment; and
(B) introducing a stream comprising nitrogen into the equipment, wherein the equipment comprises deposits.