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INVENTION
Russian Federation Patent RU2183658

LIQUID FUEL COMPOSITION AND METHOD FOR ITS PREPARATION

LIQUID FUEL COMPOSITION AND METHOD FOR ITS PREPARATION

Name of the inventor: Eugene G. Gorlov; Valery G. Lury
The name of the patentee: Gorlov Evgeniy G.; Valery G. Lury
Address for correspondence: 119121, Moscow, Smolensky Bulvar, 17, kv.4, E.G.Gorlovu
Starting date of the patent: 2001.04.06

The invention relates to liquid formulations of fuel compositions and methods for their preparation. The fuel composition consists of 40-65 wt.% Of finely divided solid fuel, 1-20 wt. % Stabilizer and up to 100 wt.% Water-containing liquid medium selected from the group of activated sludge and / or sediment resulting from the biological treatment of wastewater, sapropel, bird droppings, manure swine or cattle products cesspool cesspools, lignin. As the fine solid fuel fuel composition comprises coal or coke breeze, carbon black fines petroleum coke, graphite fines charcoal, waste fines production and use of carbon electrodes, or mixtures thereof, as well as the aqueous liquid medium contains water or sediment and / or activated sludge sealed in the primary settlers stations for wastewater with a humidity of 95-99%, or runoff of livestock farms or processing plants. A method for producing a fuel composition. The present invention significantly reduces the cost of the formulation.

DESCRIPTION OF THE INVENTION

The invention relates to liquid formulations of fuel compositions and methods for their preparation.

Known liquid fuel composition and method for its preparation by co-grinding of coal and sewage treatment plants with a grinding followed by separation of the products in the flotation cell with isolation of the target product in the form of flakes, followed by drying the resulting C 10 L 5/46 desired product (UK Application 2162196, cl. , 1986).

The disadvantage of such a fuel composition is a multistage process with the need to drying the resulting liquid fuel composition.

A method of producing a fuel by mixing the powdered slurry of solid carbon particles heat treated in an autoclave with the liquid effluents. Heat treatment is carried out for 5-120 minutes at 65-260 o C and a pressure of 0,135-5 MPa. The disadvantage of this method is its complexity and power consumption (US Patent 4762527, C 10 L 1/32, 09.08.88).

The closest to the invention is a fuel composition and a method for its preparation based on pulverized coal, comprising a secondary crushing of solid fuel in the aqueous medium to form a particulate solid fuel, and the subsequent introduction of the stabilizer together homogenization. As a stabilizer used bentonite attapulgite, montmorillonite or sepiolites. The composition comprises 65-75% of the particles of finely divided solid fuel, 0.5-5.0% stabilizer, and water (US Pat. US 4432771, C 10 L 1/32, 21.02.84).

The disadvantage of the known composition is the use of expensive components.

The invention aims to reduce the cost of the liquid fuel composition and simplification of its manufacturing technology.

The goal is achieved due to the fact that the composition of the fuel composition used and cheap waste components and little costly and methods for their preparation.

First, liquid fuel compositions comprise 40-65% of finely divided solid fuel, 1-20% of a stabilizer, and the balance to 100% - the liquid medium.

As the stabilizer component is used with a moisture content of 50-85%, such as activated sludge and / or sediment resulting from the biological treatment of wastewater, sapropel, bird droppings, manure swine or cattle products cesspool cesspools, lignin.

Secondly, the liquid fuel composition as particulate fuel comprises coal or coke breeze, shale, petroleum coke fines, graphite, charcoal fines, waste fines production and carbon electrodes are used, or mixtures thereof.

Thirdly, the liquid fuel composition as the liquid medium comprises water or sediment and / or activated sludge, in the primary settlers compacted stations wastewater with a humidity of 95-99%, or livestock waste water systems, waste water or food industry.

A process for preparing a fuel composition is performed as follows: The solid fuel pre-ground to a particle size of not more than 3 mm, then mixed with the aqueous liquid medium selected from the group of water or sediment and / or activated sludge, compressed into primary sedimentation tanks stations wastewater with humidity 95-99%, or livestock waste water systems, waste water or food industry, medium is subjected to grinding to a particle size of 10-50 microns, are added to stabilizer humidity 50-85%, selected from activated sludge and / or precipitate is obtained when the biological wastewater treatment plants, sapropel, bird droppings, manure of pigs and cattle, the product cesspool cesspools, lignin and homogenized to obtain a fuel composition comprising a finely divided solid fuel is 40-65 wt. % Stabiliser 1-20 wt.%, And the balance to 100% liquid environment.

Dispersing, mixing and homogenization can be carried out in dispersant-Hotuntseva Pushkina, rotary pulsation apparatus, disintegrator, dispersant and other vibratory devices designed for grinding and dispersing suspensions.

The following examples are given to illustrate the invention, which should not be construed as limiting the scope of this invention.

example 1

Original fine coal brand G w carbon. Inskaya (W a = 15,2%, A d = 15,5%, V = 40,6%) was subjected to grinding in a hammer-mill to P - 1 mm, and then mixed with its liquid phase - sludge from wastewater treatment (active yl precipitate +) with 99% humidity and subjected to grinding to an average particle size of 35 microns in DESY disintegrator 11 at a speed of 8000 min -1 and 10 -3 frequency shock for 10 seconds.

The resulting milled slurry was mixed with the stabilizer - sludge from wastewater (d = ash content of 28%, 65% moisture content in the organic part of 36% protein, 26% fat, carbohydrate 18.5) in tori vibrosmesitele to obtain homogeneous stable fuel slurry, containing, wt.%:

  • Coal - 65
  • Stabilizer - 18
  • The liquid medium - Up to 100

and having a viscosity of 0.36 Pa × s at 50 o C and is stable for 15 days.

example 2

Source petcoke (W a = 1,5%, V = 4,5%, A d = 1,5%) with a particle size of 10 mm was subjected to a crushing mill to obtain pulverized coke - 1 mm.

The crushed coke is mixed with activated sludge treatment plant (W a = 95%, A d = 36,7%) , milled and homogenized in a rotary-pulsation unit in the presence of a stabilizer - Manure (mixture of liquid and solid excrements and cows podstilnogo material - straw) having a moisture content and W = 85.0% and a density of 1.3 g / cm 3. After grinding and homogenizing the obtained stable for 15 days dispersion with a viscosity of 0.27 Pa × s at 50 o C and containing, wt.%:

  • Petcoke - 56
  • Stabilizer - 20
  • The liquid medium - Up to 100

Example 3.

Waste carbon electrodes (W a= 0,2%, V daf = 6,3 %, A d = 4,9%) pre-grinding was subjected to class - 3 mm in a hammer mill. Then it is mixed and milled in a linear induction rotator (CHL) in a mixture with a stabilizer - lignin (50% moisture content in wt% based on the dry matter lignin 61 12.5 fibers, mineral impurities 16.3.) And liquid medium - activated sludge packed in primary settling tanks of stations for wastewater with a humidity of 96.5%.

After grinding and homogenizing to obtain a stable fuel with a viscosity of 0.49 Pa s and containing W, wt.%:

  • Solid fuel - 65
  • Stabilizer - 1
  • The liquid medium - Up to 100

example 4

Electrode graphite is ground in a hammermill to 3 mm, and then charged into a tori vibrating mill with water from wastewater and hydrolytic lignin Baikalsky PPM (humidity 62%, the contents in wt.% Based on dry solids lignin 40%, the fibers 15, mineral impurities 16.2) and subjected to grinding and homogenization. The resulting stable for 20 days dispersion had a viscosity of 0.47 Pa s and B contained, wt.%:

  • Solid fuel (graphite) - 40
  • Stabilizer - 20
  • The liquid medium - to 100.

CLAIM

1. A fuel composition based on a water-containing liquid medium with the addition of stabilizer and the finely divided solid fuel, characterized in that as stabilizer contains components with humidity to 50-85%, selected from activated sludge and / or precipitate is obtained when the biological wastewater ., sapropel, bird droppings, manure swine or cattle products cesspool cesspools, lignin, in the following ratio, wt%:

  • Finely divided solid fuel - 40-65
  • Stabilizer - 1-20
  • The liquid medium - Up to 100

2. The fuel composition according to claim 1, characterized in that as finely divided solid fuel comprises coal or coke fines, soot, petroleum coke fines, graphite, charcoal fines, waste fines production and use of carbon electrodes, or mixtures thereof.

3. The fuel composition according to claim 2, characterized in that as the aqueous liquid medium contains water or sediment and / or activated sludge, in the primary settlers densified stations wastewater with a humidity of 95-99%, or livestock waste water systems, or drains of the food industry.

4. A process for preparing a fuel composition comprising a preliminary crushing of solid fuel, a secondary solid fuel in grinding the aqueous liquid medium to form a particulate solid fuels, and subsequently adding a stabilizer homogenization, characterized in that as stabilizer components are used with a moisture content of 50-85%, selected group of activated sludge and / or sediment resulting from the biological treatment of wastewater, sapropel, bird droppings, manure swine or cattle products cesspool cesspools, lignin, with the following ratio of components in the resulting composition, wt.%:

  • Finely divided solid fuel - 40-65
  • Stabilizer - 1-20
  • The liquid medium - Up to 100

5. The method of claim. 1, characterized in that the liquid medium is water or sediment and / or activated sludge, in the primary settlers densified stations wastewater with a humidity of 95-99%, or effluents of the food industry.

print version
Publication date 09.04.2007gg