Continuous stirred-tank reactor

Continuous stirred-tank
reactor

Substrate loading

A frontal loader delivers substrates into a hopper where the inputs are crushed and fed to the horizontal auger. Next, the substrates are transported to the vertical auger.

Supply of substrates

Substrates are fed into the reactor by vertical and inclined augers.

Heating

The target temperature inside the reactor is maintained with heating pipes on the inner reactor walls.

Mixing

Substrates are constantly mixed with inclined and submersible mixers.

Digestion

Anaerobic bacteria digest the substrates, producing biogas.

Desulfurization

Sulfur is removed by means of a biofilter. To create the local aerobic conditions for sulfur-eating bacteria, air is supplied.

Biogas collecting

Biogas is collected and stored in a gas-holder on top of the reactor. Then it is dried, compressed by a gas blower, and pumped for combustion

prev slide
next slide
01
Substrate loading
02
Supply of substrates
03
Heating
04
Mixing
05
Digestion
06
Desulfurization
07
Biogas collecting
08

Technology Description

The CSTR biogas technology (Continuous Stirred Tank Reactor) is simple and easily recognizable.

Distinctive features are the diameter of the biogas reactor is greater than the height, heating by pipes on the reactor’s walls, a flexible gasholder above the reactor, sulfur removal by a biofilter from air in the center of the reactor, mixing with inclined and submersible mixers. Biogas reactors are made of either reinforced concrete or bolted steel panels.

Moisture in a well-functioning CSTR biogas reactor is 93-97%. The organic dry matter load per m³ of reactor is 2-5 kg per day.

The technology is most often used for processing manure and dung. A biogas plant with CSTR technology is often referred to as a “farm-style”. It is easy to maintain, which is especially important in rural areas, but less effective than other technologies.

Distinctive features:

  • load of organic dry matter (ODM) 2-5 kg/m³ of the biogas reactor per day
  • heating by pipes on the walls of the reactor
  • solids content in the reactor 3-7%
250 kW to 1,8 MW
power capacity

Suitable substrates

  • pig slurry
  • poultry dung, chicken dung, turkey dung, quail dung
  • cow manure
  • sheep manure
  • rabbit manure, fox manure, mink manure
  • olive pressed cake and pulp

Realized objects

thumbnail-image-42884

Dublin

thumbnail-image-42885

Vircava

thumbnail-image-42886

Osimo

thumbnail-image-42887

Karasu

thumbnail-image-42888

Velikiy Krupil

thumbnail-image-42889

Velikiy Krupil (reconstruction)

thumbnail-image-42890

Kiev-3

thumbnail-image-42891

Voznesensk

thumbnail-image-42892

Podgorodneye

thumbnail-image-42893

Kiev-2

thumbnail-image-42894

Rokytne

thumbnail-image-42895

Tartlton

thumbnail-image-42896

Kiev-1

thumbnail-image-42897

Cimisheny

thumbnail-image-42898

Tîrnova

thumbnail-image-42899

Karaganda

thumbnail-image-42900

Hincesti

thumbnail-image-42901

Cicedagi

thumbnail-image-42902

Kamenica nad Cirochou

thumbnail-image-42903

Okny-1

thumbnail-image-42904

Khmelnitski-3 and -4. The biggest biogas plant in the world!

thumbnail-image-42905

Khmelnitski-1

thumbnail-image-42906

Kopychyntsi

Looking for a solution for your business?

Contact form

Fill out the form, and we will contact you as soon as possible.

* Required fields