BIOGAS PLANT FOR MANURE PROCESSING Russian patent published in 2017 - IPC A01C3/00 

FIELD: agriculture.

SUBSTANCE: biogas unit contains a bioreactor with series-interconnected tanks having overflow baffles and equipped with pipelines for supplying manure substrate and extracting fermented mass, with heaters, stirring devices and unit for collecting and releasing biogas. The bioreactor has one reactor tank and five annular maturing tanks, made of reinforced concrete structures. Tubular heaters are installed at the bottom of each tank. The baffles of the annular maturing tanks have overflow windows, which are in diametrical opposition to each other and at different depths. There is a gas holder above the bioreactor. The lower end of its ring is dipped into a hydraulic gate. A backer plate of the gas holder is welded on the outer side of the ring. It pivots on four serpentine rollers, two of which are rigidly fixed in the foundation, and two are compensators. There are cross braces inside the gas holder ring. A hard stirrer for the main reactor tank and chain stirrers for annular maturing tanks are fixed thereto. The baffles of the annular maturing tanks are made of bimetal. The baffle bimetal material on the side of dropped substrate has a heat-conductivity coefficient which is 2.0-2.5 times greater than the one on the side the subsequent maturing tank. The hard stirrer for the main reactor tank and chain stirrers for the annular maturing tanks are connected with a gear motor, which is designed as a drive with a rotational speed control device coupled with a temperature control device and temperature sensor, located in the main reactor tank. The temperature control device includes comparing and setting units, an electronic and magnetic amplifier, a nonlinear feedback unit. The rotational speed control device is designed as a block of magnetic powder couplings. The biogas extracting device is equipped with a nozzle and a swirler, which is composed of plates, the inlet and outlet sections of which are located one opposite to the other at right angle. And the nozzle at the smaller outlet port has an annular groove which is connected with a mud collector. The outer surface of the gas holder is covered with a fine-fiber basalt material made of twisted bundles which are longitudinally extended from the ring to the top of the gas holder.

EFFECT: maintaining the specified quality of a finished product at low ambient temperatures.

6 dwg