Composition of chemically obtained binding agent for manufacture of coal briquettes

FIELD: oil and gas industry.

SUBSTANCE: in order to increase calorific capacity and mechanical strength of fuel briquettes obtained from small coal fractions and coal slurries, there used are resinous rejects - resin after captax manufacture. Consumption of the binding agent is 7-8 wt % of the coal material weight.

EFFECT: coal briquettes with the above binding agent are used under domestic conditions for public living needs and in order to obtain the products of technological purpose when performing semi-coking processes.

2 cl, 1 tbl, 5 ex

 

The invention relates to the technology of solid carbonaceous fuel-briquettes, which can be used in the home for domestic needs and to obtain products technological purpose during the semi-coking.

As a source of raw materials, waste coal sludge, screenings, cake press filters during enrichment, which is baled resinous waste chemical industry.

As a binder offers a resinous binder of variable composition - resin captax, which is the chemical production waste 2-mercaptobenzthiazole.

Composition to obtain briquettes fuel includes coal and tar captax when the ratio of components, %: resin captax - 7-8; coal - rest.

Describes a binder for briquettes consisting of resin captax - chemical production waste 2-mercaptobenzthiazole. The proposed binder allows you to produce briquettes with the necessary strength, moisture resistance, high calorific value.

Description of invention: the Invention relates to a binder materials used for processing the dispersed coal raw materials into refined fuels household and technological purpose method of briquetting with St. the user.

The invention provides a standard process flow: sieving of coal material - drying - mixing with a binder - briquetting be obtained from the carbon material of the fuel briquette with high consumer properties, improve economic efficiency of enterprises of fuel and energy complex in the rational use of its coal resources, including secondary, and simultaneously solve the environmental problems of chemical production: dispose of unclaimed resin - waste chemical production captax - 2-mercaptobenzthiazole.

Declared waste 2-mercaptobenzthiazole - resin captax is formed after cleaning product captax and is not currently practical application. This resin is a complex mixture of products of high-temperature condensation of aromatic amines in the presence of sulfur, which include: phenylisocyanate C6H5NCS, thiocarbanilide C6H5NH-C(S)-NHC6H5,

anisogametes:
2-aminothiophenol-N-C6N 4-S,
2.2-diaminodiphenyldisulfide-N2N-C6H4-S2-C6H4-NH2,
2.2-diaminoanisole-N2N-C6H4-S-C6H4-NH2,
2,2-dimercaptotoluene-HS-C6H4NHC(S)-HN-C6H4SH
benzothiazol:
2-mercaptobenzthiazole:

Distinctive features of the invention are:

- use as a binder resin captax;

a necessary amount of resin captax to obtain high-quality briquettes is about 7-10 wt.% from the mass of the initial coal feedstock.

The technical result - the use of alternative fuel binder to produce a high quality fuel briquettes.

Currently, the main reasons hindering the development of briquetting stone and old brown coal, is the lack of available and dash the CSOs binder. For this reason, everywhere and constantly are searching for different options for individual or combined binder for the production of fuel briquettes, expanding their range [1-5].

Selection of the binder, at the same time satisfying all the necessary requirements - availability, low cost, ability to increase the calorific value obtained okuskovannogo fuel and its moisture resistance, the ability to make briquettes of high mechanical strength, etc. is a complex technical task.

Among the organic resinous binder to a greater extent known binder based on petroleum bitumen of different composition [6].

Known, for example, the method of production of coal briquettes old brown coal Kangalassky field having a low content of tar substances using oil binder - oil bitumen Angarsk refinery, oil from oil Talakanskoye field, lacustrine sapropel local origin on the territory of Yakutia [7].

The disadvantage of this invention is the use of practically available additional component - lacustrine sapropel local origin, the lack of data for briquetting coal, high transportation costs for delivery to the place of production of brown coal petroleum bitumen and tar.

Naib is more close to the invention is a method for the production of coal briquettes based on petroleum bitumen, which was dissolved in organic solvents: gasoline, benzene, kerosene and deposited in the form of a solution of bitumen in the coal particle mixture, followed by Stripping of the solvent sharp ferry [5]. The main drawback of this invention is the use of toxic, flammable or explosive solvents, which claimed invention required for uniform application of binder to the surface of the coal particles.

The purpose of the invention is the extension of the existing range of binders that allow you to create fuel coal briquette with the necessary consumer properties and with the simultaneous processing of resinous waste large-scale chemical production.

This goal is achieved using resinous waste - resin production captax, which is a complex mixture of variable composition, consisting of various organic compounds of the aromatic series. Resin captax has properties of surfactants is an important technological properties of high adhesion to a solid surface, which is a particularly important factor in obtaining okuskovannogo coal fuel.

In this method of producing fuel briquettes with the stated binders used a mixture of coal slurry and coal (at a ratio of 1:1) Kuznetsk at the Aulnay pool, submitted by coal grade GZH with the following characteristics:

- granulometric composition (content of particles of different size):

(0-1 mm) - 50%;(1-4 mm) - 40%; 4 mm - rest;

- ash - 20%;

the calorific value of 5000 kcal/kg

- humidity - 10%.

Example 1 (the prototype).

Obtained after drying the coal mixture with a residual moisture content of 6% was mixed with kerosene solution of petroleum bitumen and betteraves technology according to patent prototype [5]. After Stripping of the solvent and cooling the obtained pellets were tested for their quality on key consumer indicators. The test results presented in the table.

Examples 2-4. For the manufacture of coal briquettes mixture prepared from coal slurry and coal screening (1:1) with a residual moisture content of 6%, pre-heated to a temperature of 50°C and mixed with heated to 60-70°C. the resin captax with different quantities of binder material. The results of the experiments and the characteristics of the briquettes are presented in the table.

Table
# exampleThe binder consumption, %Ash content, %Heat of combustion, kcal/kgMechanical is Kai strength, kg/cm2
1. Prototype [5]20540080
2. According to the claimed invention620555090
3. According to the claimed invention719,55550120
4. According to the claimed invention819,25610121
5. According to the claimed invention919,15620123

From table 1 it follows that the maximum mechanical strength (optimal adhesion) with the high quality of briquettes is observed when the binder consumption of 7-8%.

Sources of information

1. A.c. No. 1759857, MCL3C10L 5/38; C10L 5/36. Layered fuel briquette. / Engskov, Webcosmo, publ. 07.09.1992, bull.№33.

2. RF patent №2078794, MCL3C10L 5/20. The method of obtaining coal briquettes / SDI, Washignton, Arimasuka, APR the kashev ( Beeline, Vasilakos, Aviscreen. Spicoli, publ. 10.05.1997.

3. RF patent №2147029, MCL3C10L 5/12; C10L 5/14; C10L 5/16; C10L 5/40. Fuel briquette and method of its production / VGUI, publ. 27.03.2000.

4. RF patent №2146276, MCL3C10L 5/44; C10L 5/12. Binder for briquettes / Uotations, Gmodel, Aggugini, Benmaamar, Nasonov, publ. 10.03.2000.

5. A.S. No. 388011, MCL3C10L 5/16. Method for the production of coal briquettes / Issakson, Wageline, Meditron, Baserdasew, Alahabad, publ. 22.06.1973, bull. No. 28.

6. He was the A.T. Briquetting of coal with a binder. / Ateljevic - M.: Nedra. - 1972. - 160 S.

7. Petrov L.A. production of domestic fuel briquettes using oil binder / Laidlaw, Weglassen, Overunity // Oil and gas business, March 2007.

8. Methodological recommendations on the use of still residue production diafana "OP" to improve water - and frost-resistance of asphalt concrete, M - 1984.

1. Organic binder for fuel coal briquettes, characterized in that to increase the calorific value and the mechanical strength of briquettes produced from small fractions of coal and coal slurries, use tar waste - resin production captax.

2. A binder according to claim 1, characterized in that the expenditure declared binder is 7-8% by weight of the coal material.



 

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