Federal company Scientific Production Center "Ekotechnica" specializes in the development and deployment of various technologies and equipment for preparation and combustion of composite coal-water slurries (CWS).

Scientific Production Center "Ekotechnica" implements coal-water slurries, an ecologically-clean and economical source of energy, in low-power and medium-power locations. Being the leading producer in its field in Russia, the company carries out a whole set of tasks from outlining basic technical directives to constructing and launching systems that transform boiler-stations to run on CWS.

Composed hydro-coal fuel is a new and prospectively-successful type of ecologically-clean, comfortably-implemented, and economical liquid fuel that is based on coal.

Principal characteristics of CWS

CWS is a dispersed mixture, which consists of thinly-cut coal, water, and a plastic additive.

• HCF content:

    - Coal ---------------------- 59-70 %

    - Water -------------------- 29-40 %

    - Plastic add. ---- -------- 1 %

• Ignition temp.  - 450-650 C

• Combustion temp.  - 950-1050 C

• Posses all technological properties of a liquid fuel: transported in auto or rail-road tank cars, through pipelines, in tankers; stored in closed storage tanks.

• All properties are preserved during long-term storage and transportation.

• Explosion and fire safe.

Advantages in CWS use

Ecological:

• Ecologically safe at all stages of production, transportation and use

• Allows reducing harmful waste disposal into the atmosphere by 1.5 - 3.5 times (dust, oxides, nitrogen, sulfur dioxide)

• Allows effective use of its combustion byproduct, airborne ash

Technological:

• CWS is similar to other liquid fuels. Therefore, in altering heat-generating facilities to use CWS, no major change of equipment is needed

• Allows mechanizing the processes of receiving, feeding, and combusting the fuel

• Newly-designed technology of rapid combustion at temperatures of 950-1050 C allows the combustion efficiency to exceed 97 % (in plate combustion of coal, efficiency is seldom over 60 percent)

• Four methods of igniting CWS have been developed: with the use of a plasmotron, natural gas, liquid fuel, and solid fuel.

Economical:

• Reduces the cost of 1 ton of fuel with combustion heat of 12600 BTU/lb  (by 2-3 times)

• Expenses associated with transportation, storage, use, and combustion will be reduced by 15-30 %

• Reduces capital costs involved in the transition from the use of oil and gas to CWS by 3 times

• All investment costs are covered in 1-2.5 years

Because the technology of CWS preparation does not include chemical or thermal procedures of coal refinement, the cost of creating HCF is rather low.

Technologies of preparation and combustion of CWS have been tried in the following locations:

• Transition to CWS (from black mineral oil) of agglomeration equipment at Abagu-rskaya Plant (city of Novoku-znetsk)

• Installation of CWS combustion systems for boiler-stations at a milk-production factory (city of Myskiy), at the Inskaya Mine (city of Belovo), and at an energy company Komunergo CWS (city of Kemerovo), etc.

• Industrial installation for preparing and combusting CWS at the Taru-ganskya Mine (city of Prokopievsk)

Currently, Scientific Production Center "Ekotechnica" welcomes potential partners and investors to collaborate in further developing the use of composite coal-water slurries.