Fuel element obtaining method

FIELD: power industry.

SUBSTANCE: wood dust is mixed in ratio of 1:1 as to volume with liquid manure of cattle stock with natural moisture content of 80-90%. Then, the obtained mixture is formed and subject to drying in natural conditions.

EFFECT: simplifying the technological process, excluding energy consumption during preparation of components, and calorific capacity and mechanical strength of fuel elements meets high requirements.

2 tbl, 3 ex

 

The present invention relates to a process for the manufacture of fuel elements from its own renewable resources, in particular to a method for the production of fuel elements from sawdust, which can be used for heating outbuildings on farms cattle (cattle) and in the everyday life of the rural population, that is, in the agriculture of the country. There is a method of producing fuel briquettes [1]. According to this author's testimony, the method includes the operation of mixing the dried mixture of powdered solid fuel and a binder on the basis of waste oil production - oil sludge and/or waste engine oil with additional additives in certain % ratios, namely, in % by weight of briquetted mixture:

Binding: slime and other10-32
The crushed solid fuel from a group:
sawdust, peat and other100

This mixture then is subjected to briquetting and drying at a temperature less than 300°C.

In terms of farms and way of life of the rural population to meet the needs of the fuel at the expense of their own vozobnovljaet who's resources known method unsuitable due to its complexity (many components, difficulty maintaining their mass % ratio), as well as a significant cost of thermal energy as in the preparation of the starting components, and in the process of drying of the briquettes.

In addition, a well-known composition for wood briquettes [2], including shredded wood waste sawdust or shavings and animal excrement, characterized in that it contains animal manure - manure with water content 50-66% when the ratio of components, wt.%:

Sawdust or shavings50-80
The manure with water content 50-66%Rest

In this case, the use of energy-intensive manufacturing operation of raising to the required dimensions of sawdust and chips by grinding. In addition, apply the manure in their (1-6 days) with a water content in the range of 50-66% or stale manure, which is mixed with hot water and bring the contents in manure to 50-66%. It is known [3]that the moisture content of manure varies between 70-95%of the author's evidence is not clear how they get the humidity of this component to 50-66%, according to the formula of the copyright certificate [2]. These limitations, first, complicate the process of preparation of the components, and in the case of stale manure Tr the need for additional heat energy for hot water preparation, used for finishing manure to the desired moisture content.

The purpose of the present invention for a method:

- simplify the process by replacing the weight ratios of components used volume as easier to implement, due to the use of bespattering manure, with a humidity of 80-90%, and sawdust that does not require additional preparation to mixing;

excluding process energy training components for grinding, drying and conveying the manure to the required moisture content, as well as in the briquetting process, and drying of the briquettes (as it should be according to the technology in the above methods) [1, 2].

In the proposed method as a binder mixed with sawdust is used bespostavochnyj manure (semi-liquid or soluble, consisting of feces and urine), humidity is 80-90% (this is the novelty of the decision), which is obtained when the content of cattle without litter, for example, on slotted floors [3], and this manure is called bespostavochnymi. The concept bespostavochnyj manure is used when describing the technologies associated with the production of fertilizers [4].

Example: sawdust thoroughly mixed with bespostavochnymi manure (cattle), as a binder, natural humidity of 80-90% in the ratio of 1:1 by volume, get a doughy mass,which at room temperature is formed under a pressure of 0.02 to 0.04 MPa and dried in natural conditions (in air).

The proposed and reference chemical compositions are presented in table 1.

Table 2 contains the results of laboratory tests the strength and calorific value of the samples of the fuel elements produced by the proposed method and the control sample briquettes, made known method [2].

Table 1.
ComponentsThe content of the component
Volume % ofWeight % in the composition
1234
Wood waste - sawdust50505050*
Manure bespostavochnyj
humidity:
80% 50---
85%-50--
90%--50-
Manure moisture 50-66%---50*
Note. Part 4 - control, content, wt.% [Avts 1713923 (sawdust - 50%of the manure with water content 50-66% - 50%, i.e. part 1)].

Table 2.
CompositionThe characteristics of the fuel cell
the calorific value, kcal/kgthe strength of the sample, kgf/cm2crochemore, %use hot water when finishing to the required humidity
13690 a 4.9-no
23610a 4.9-no
33526a 4.9-no
44100-1,1Yes (in the case of stale manure)

Thermal performance of fuel cells, obtained by the proposed method: the calorific value and mechanical strength meet the high requirements. In particular, the calorific value of the fuel elements is approaching calorific value of some coal [5]. Excluded costs of energy in the preparation of the starting components (grinding the dried mixture of solid fuels and binders) [1]. Work on the preparation of a mixture with a volume composition easier than cooking mixture. In the proposed method is applied bespostavochnyj manure with his usual humidity of 80-90% [3], which does not require any additional expenditure of energy to use.

Due to the higher moisture content of the applied manure processitemevent components to obtain a doughy mass in the proposed method, in comparison with the known method [2] is easier.

Sources of information

1. Avts RU # 2130047 C1, 6 C10L 5/02, 5/44, 5/12.

2. Avts RU # 1713923 A1, C10L 5/44, 5/42.

3. Aponeo and other Reference hygiene of farm animals. Moscow, Rosselchozizdat. - 1975, p.151 (1-20 row from the top) str (15-18 line from the bottom).

4. Denisov, V. A., Kolesnikova so-CALLED. Promising technology for the production of complex organic fertilizers on the basis of bespattering manure // Sat."Scientific and technical problems of mechanization and automation of livestock", Vol.8, part 1, str. 1999.

5. Kiselev N.A. Boiler installation. Moscow, Higher school", 1975, p.19.

Method for the production of fuel elements from sawdust, characterized in that the binder in the ratio of 1:1 by volume with sawdust used bespostavochnyj the cattle manure (cattle) natural humidity of 80-90% with the further forming of the mixture and drying of elements in natural conditions.



 

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1 ex

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4 cl, 1 tbl, 2 ex

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3 cl, 2 dwg

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FIELD: chemistry.

SUBSTANCE: while carriage 32 travel relative to the frame 24 guides 33 frames 24, required angle is regulated between racks 3, 4 and circuits 1 and 2. There are connected drives 5 and 6, sawdust 22 charging device 20 and liquid binder feeder 23. Sawdust and liquid binder are supplied continuously to the space 21 between circuits 1 and 2 wood sawdust and the liquid binding. Simultaneously there is connected crank drive 29 which by rod 28 makes the rack 4 and the second circuit 2 to vibrate in a vertical plane. In the intercircuit space 25, sawdust 22 and liquid binder are mixed, while formed mass is pressed by moving adjacent branches of circuits 1 and 2.

EFFECT: simplified and cheaper utilisation of equipment, higher performance reliability and quality of moulded fuel cells.

2 cl, 4 dwg

FIELD: wood industry.

SUBSTANCE: invention can be used for production of fuel elements from composite based production waste. A required angle α between posts 3 and 4, and cycles 1 and 2 is set by moving a carriage against guides 26 of frame 18. Drive units 5 and 6, loading device 14 for sawdust 16 supply and liquid binder feeding device 17 are activated. Sawdust 16 are mixed with the liquid binder in intercycle space and the mixture thus obtained is packed by means of downward movement of the adjacent sides of cycles 1 and 2. When the device is running, pressure of the mixture being compressed is taken up by convergent belt sides of both cycles 1 and 2 and by flat friction bearings 9 10 and 1 fixed to posts 3 and 4. Simultaneously with the downward movement of the mixture, the mixture is cut by sharp edges of transverse walls 13 while cycle side 2 is gradually approaching walls 13 of cycle 1.

EFFECT: invention allows to simplify the equipment being used and to make it cheaper, to increase performance reliability and quality of the fuel cells being formed.

4 cl, 4 dwg

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