Invention Grant
- Patent Title: Antifreeze recycling systems
- Patent Title (中): 防冻回收系统
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Application No.: US11862019Application Date: 2007-09-26
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Publication No.: US08029650B1Publication Date: 2011-10-04
- Inventor: Dale L. Letcher
- Applicant: Dale L. Letcher
- Agency: Stoneman Law Patent Group
- Agent Martin L. Stoneman
- Main IPC: B01D3/02
- IPC: B01D3/02 ; B01D3/10 ; B01D3/34 ; B08B7/04 ; C07C27/28 ; C07C29/80 ; C07C29/94
Abstract:
A method for purifying used antifreeze is disclosed. An antifreeze recycling systems uses a simple-distillation apparatus adapted to distill clean antifreeze from used antifreeze. A novel scraper blade is used in the simple-distillation apparatus. Also, antifreeze recycling methods that minimize waste and generate nontoxic, landfillable waste are provided. An antifreeze product produced by the present method, and a nontoxic, landfillable sludge product produced by the present method, are disclosed.
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