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-198635

Dublin

thumbnail-image-198636

Vircava

thumbnail-image-198637

Osimo

thumbnail-image-198638

Karasu

thumbnail-image-198639

Velikiy Krupil

thumbnail-image-198640

Velikiy Krupil (reconstruction)

thumbnail-image-198641

Kiev-3

thumbnail-image-198642

Voznesensk

thumbnail-image-198643

Podgorodneye

thumbnail-image-198644

Kiev-2

thumbnail-image-198645

Rokytne

thumbnail-image-198646

Tartlton

thumbnail-image-198647

Kiev-1

thumbnail-image-198648

Cimisheny

thumbnail-image-198649

Tîrnova

thumbnail-image-198650

Karaganda

thumbnail-image-198651

Hincesti

thumbnail-image-198652

Cicedagi

thumbnail-image-198653

Kamenica nad Cirochou

thumbnail-image-198654

Okny-1

thumbnail-image-198655

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

thumbnail-image-198656

Khmelnitski-1

thumbnail-image-198657

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