Method for preparing artificial peat and fulvic acid from livestock and poultry manure in breeding industry through high-pressure hydrothermal method

Abstract

A method for preparing artificial peat and fulvic acid from livestock and poultry manure in the breeding industry through a high-pressure hydrothermal method includes the following steps: regulating the concentration of the livestock and poultry manure to be 10-40%, pressurizing the livestock and poultry manure, and feeding into an electromagnetic heating tube reactor and a tower type delay reactor, then separating by using a depressurization flash tower, feeding a gas phase into a preheating heat exchanger, subsequently circulating a part of flash evaporation condensate back to a livestock and poultry manure concentration adjusting tank, separating a solid phase slurry through a pressure filter; using the filtered solid as an artificial peat; pumping a filtrate into a tubular heater, heating to 380° C. or above, then desalting in a desalting tower; mixing the desalted filtrate with the remaining flash condensate to obtain a fulvic acid product.