Invention Grant
- Patent Title: Method and system for compounding fertilizer from manure without nutrient emission
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Application No.: US16054895Application Date: 2018-08-03
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Publication No.: US10793483B2Publication Date: 2020-10-06
- Inventor: David DeWaard , Josh McCort , Michael Klapper
- Applicant: DariTech, Inc.
- Applicant Address: US WA Lynden
- Assignee: Dari-Tech, Inc.
- Current Assignee: Dari-Tech, Inc.
- Current Assignee Address: US WA Lynden
- Agency: Williams Kastner & Gibbs PLLC
- Agent Mark Lawrence Lorbiecki
- Main IPC: C05F3/00
- IPC: C05F3/00 ; C05F17/00 ; C05F3/06 ; C05C3/00 ; B01D21/26 ; B01D19/00 ; B01D1/28 ; B01D5/00 ; C02F9/00 ; C02F1/20 ; C02F1/38 ; A01C3/00 ; C02F1/04 ; C02F101/16 ; C02F103/20 ; C02F11/04

Abstract:
A system and method for reclaiming nutrients from dairy manure includes a centrifuge for separating a liquid fraction of the manure from a solid fraction comprising organic material; a mechanical vapor recompression evaporator (“MVR”) to receive the liquid fraction from the centrifuge and evaporating the liquid fraction by mechanical vapor recompression to produce ammonia-laden water vapor and a concentrated nutrient slurry; a dryer for drying the nutrient slurry to a selected moisture content to be available as an ingredient in compounded fertilizer; and an ammonia stripping tower assembly to receive ammonia-laden water vapor from the MVR and from it to precipitate ammonium sulphate salt and condense water as separate products.
Public/Granted literature
- US20190119177A1 METHOD AND SYSTEM FOR COMPOUNDING FERTILIZER FROM MANURE WITHOUT NUTRIENT EMISSION Public/Granted day:2019-04-25
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