Briquetted solid fuel

FIELD: chemistry.

SUBSTANCE: invention relates to briquetted solid fuel, which contains activated charcoal screenings and ballistit powder wastes which do not contain heavy metal salts and other environmentally hazardous components, ground to particle size of 0.5-1.0 mm, and polyacrylamide as binder, with the following ratio of components, wt %: activated charcoal screenings - 75…86, ballistit powder wastes - 10…20, polyacrylamide - 4…5. The invention enables to comprehensively solve the problem of the environment, saving energy resources and recycling potentially hazardous high-energy substances.

EFFECT: solid fuel has higher flammability, low ash content and high calorific capacity.

1 tbl

 

The invention relates to the development of effective briquetted solid fuel for domestic heating stoves, fireplaces, and heating devices heat water supply, Autonomous electrogeneration and other Famous recipes briquetted solid fuel-based substances remineralise origin - processing products charcoal (.RU 2187542; on the basis of coal and binder Pat. EN 2208044; U.S. Pat. EN 2043392, Pat. EN 2373261; U.S. Pat. U.S. No. 3592779), on the basis of wastewater sludge (WWS) (U.S. Pat. EN 2161641), as well as the formulation of peat briquettes according to GOST 9963-84. Among them one of the most common is the recipe peat briquettes according to GOST 9963-84 adopted by the authors for the prototype. The General lack of analogs and prototypes is their low Flammability and insufficient mechanical strength of the briquettes, which leads to their destruction during operation and transport, uneven burning, with changes in the geometric shape of the briquettes. In addition, analogs and prototype inherent ash content of the order of 15-25%. When this ash from the combustion itself often requires its recycling or disposal. Famous recipes also have unsatisfactory characteristics on the ignition temperature and heat of combustion. The technical objective of the proposed invented the I is the creation of environmentally friendly formulations briquetted solid fuel, providing along with high calorific value increased Flammability in combination with low ash content and a satisfactory mechanical characteristics briquetted solid fuel during operation. The technical result of the invention is achieved by use as part of a briquetted solid fuel screenings active charcoal and technological waste ballistic powders, crushed to a dispersion of 0.5-1.0 mm, and as a binder - polyacrylamide (PAA) in aqueous solution brand N-600 on THE 6-02-0029912-61-67 or flocculant brand "Praestol-2510" THE 2216-001-40910172-98 in the following ratio, wt.%: screenings active charcoal 75-86, technological waste ballistic powders 10-20, binder (PAA) 4-5. Screenings active charcoal used as a source of raw materials, waste production (on the fractional composition) active charcoal crushed coal (GOST 6217-74). Screenings active charcoal have a high ignition temperature (~700°C). The consequence of this is the complexity of their use as a fuel component. Use subject to technological waste ballistic powders, namely nous production of artillery ballistic gunpowder and ballistic solid rocket fuels (the TRT), does not contain heavy metals and other hazardous components. The invention is presented in the table below examples of the experimental formulations briquetted solid fuel, and is that with the introduction of the briquetted solid fuel is crushed to a particle size of 0.5...1.0 mm of technological waste ballistic powders is significantly improved Flammability briquettes. The lower limit to the size of the powder fuel ballistic crumbs 0.5 mm limited technological capabilities grinding, and the upper limit 1.0 mm due to the need to ensure uniform combustion of the briquettes. The introduction of technological waste, smetak artillery ballistic gunpowder and BTRT in the composition of the briquettes also improves the mechanical characteristics briquetted solid fuel. As you know, burning ballistic powder occurs with evolution of considerable heat for a short time providing a high-gassing. Estimated energy ballistic powders, usually amounting to 3.8 -6,0 MJ/kg, during their interaction with the oxygen of the air is increased about 2 times. In the sample No. 1 (table) refused to inflammation, which is associated with the absence of the powder component technology is a logical waste smetak artillery gunpowder and BTRT in the composition of the briquettes fuel and, accordingly, the gaseous products of combustion, actively contributing to the ignition of the briquettes. With the introduction of the 10% (sample No. 2) crushed technological waste ballistic powders improves the Flammability and provides the necessary ignition temperature of the briquette - 200-250°C, its effectiveness, including the calorific value, which is higher than peat briquettes prototype. With the introduction of the 30% and more technological waste ballistic powders sensitivity briquetted solid fuel to mechanical stress, namely, sensitivity to impact, becomes invalid. Definition of sensitivity to mechanical impact was conducted according to current methods of assessing these characteristics for explosive components. The introduction of the briquetted solid fuel 10...20% crushed technological waste ballistic powders allows to obtain an optimal set of characteristics (samples№2, 3, 4, 5). The lower limit of the content of the screenings active charcoal 75% provides a relatively high energy efficiency of briquettes as a heat element, and the upper limit of 86% is limited by the necessity of detention in brittoniana Topley is E. additional components, namely technological waste ballistic powder to 20% and a binder PAA - 4-5%. The lower limit of the content of the binder allows you to provide an effective bond to the mass of the briquette in General, and the upper limit is limited by the energy inactivity, reducing energy briquettes solid toplevel present the main ingredients of patented briquetted solid fuel: screenings active charcoal, technological waste ballistic powders do not find practical application of direct and destroyed by burning or burial, that adversely affect environmental surroundings. When using these components in the composition of the proposed briquetted solid fuel solved this problem at the expense of the actual combined recycling and a positive effect of improved Flammability, lower ash content, high calorific value with satisfactory performance briquetted solid fuel. Made in laboratory bitterbynde solid fuel is easily ignited and burned with a red glow without the formation of an open flame, soot and odor. Experiments with fuel briquettes carried out in experimental conditions, the Open joint stock company "Research and the research Institute of polymeric materials" (JSC "December").

Bitterbynde solid fuel, including screenings of active charcoal and technological waste ballistic powders that do not contain heavy metals and other hazardous components, ground to a particle size of 0.5-1.0 mm, and polyacrylamide, in the following ratio, wt.%:

screenings active charcoal75-86
technological waste
ballistic powders10-20
polyacrylamide4-5



 

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FIELD: chemistry.

SUBSTANCE: briquetted solid fuel contains activated charcoal screenings and expired ballistit powder, ground to particle size of 0.5-1.0 mm, and polyacrylamide as binder, with the following ratio of components, wt %: activated charcoal screenings - 75…86, expired ballistit powder - 10…20, polyacrylamide - 4…5.

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