UTT 3000

27th Oil Shale Symposium

Manufacture Of Synthetic Oil and Gas
from Natural Low-Grade Mineral Fuel Fossils

Edouard Golmshtok, Mikhail Petrov, Alexander Blokhin, Dmitriy Kozhitsev, Ruslan Salikhov
October, 2007
Colorado School of Mines
 
 
 
«TTU » Limited Liability Company
 
Science & Technical Center
ECOSORB
 
 
Russian Federal Atomic Energy Agency
Federal State Unitary Enterprise
Saint Petersburg Research and Design Institute
ATOMENERGOPROEKT
 
 
Processing Technology
 
The technology is based on the method of high -speed oil shale pyrolysis by solid heat carrier “Galoter ” (Russia ) . The developer of the method is the G . Krzhizhanovskiy Institute of Energy - JSC “ENIN ” (Moscow ) .

The essence of the method is the following : heat , necessary for the thermal decomposition of raw oil shale , is transferred to it from its own ash , mixed during the continuous process with the raw shale and then heated in the process furnace again due to the heat received when burning semi -coke .

The method was studied in 1950 -s on the benchscale and pilot plants with the capacity of up to 200 tons of the shale per a day . In 1966 plant UTT 1- 5 0 0 ( 500 tons of the shale per a day was commissioned on oil shale chemical plant “Kiviyli ” in Estonia . This plant was exploited till 1 9 8 1 when it was dismantled . During the exploitation period of UTT - 5 0 0 , it was processed about 2 . 0 6 mln tons of shale , received 276 thousand tons of the commercial shale oil and more than 1 0 9 mln .m 3 of the semi -coke gas with the combustion value of 10000 - 1 1 0 0 0 kcal /nm 3 ( 41 .9 - 4 6 . 1 MJ /nm 3 ) ; the process and equipment analyses and balance tests were performed.

On the basis of the design experience , exploitation and researches of this plant , FSUE “SPAEP ” (previous L .О . “Teploproect ” ) , L .F . Orgenergostroy and “Lengiproneftekhim ” with taking part of the scientific organizations - ENIN , Institute of Chemistry AN ESSR , Scientific and Research Institute of Shale - developed the project of the head plant of UTT - 3 0 0 0 with capacity 3 3 3 0 tons of the shale per a day or 1 mln tons per year , and in 1980 the first plant and then in 1984 the second plant UTT - 3 0 0 0 were commissioned on Estonia Electric Power Plant , where they operate successfully till now called Oil Factory in Narva .

So , the scientific method of the low -grade solid fuels processing was modified into the modern technology of the shale processing . This technology was studied and mastered in details on the large industrial scale that allows when designing and forecasting to determine exactly the need in the initial shale , the production scope and characteristics of the received production , power inputs and influence on the environment and so on .

The plant consists of retorting unit , distillation unit , power plant , control and infrastructure .

Retorting unit includes following systems :
  • Raw oil shale feeding system includes stockpiles , belt conveyors , bunkers , crushers , feeders , screw conveyors ;
  • Raw oil shale drying system consists of air - fountain dryer (AFS ) , three stages of dry shale cyclone , pneumatic post , connecting dryer with cyclones , feeding and sealing screw conveyer of supplying raw material in semi -coking ;
  • Semi -coking system including dry shale mixer with heat carrier , heat carrier cyclones , rotary kiln -type reactor , dust chamber , semi -coke screw conveyer , air fountain furnace (AFT ) , heat carrier bypass ;
  • Heat recovery system consisting of the following equipment : three stages of ash cyclones , ash heat exchanger , exhaust heat boiler with air heater of feed water ;
  • Outgoing gases purification system consists of electrofilter and screw conveyers of collected ash from electrofilter ;
  • Blowing air system is supplying air for semi - coke burning in air fountain furnace and smoke fumes afterburning in exhaust heat boiler from blower
  • Auxiliary systems including : Steam pipeline system , Feed water system , Drain and blowdown system , Equipment electrical heating system , Cooling water system , Starting fuel system and fuel for backlighting , Oil -piping system , Ash removal system , Fire Extinguishing system , Water supplying and Sewerage , etc .
 
Interconnections and features of the essential
processing systems are shown on the Fig . 1 .
 
fig1