SU776576A3 - Method of solid waste processing - Google Patents

Description

one

The invention relates to methods for processing household and industrial waste, and can be used in chemical, petrochemical and other industries, as well as in communal households.

There are known methods for processing solid wastes, including chopping the wastes, dividing them into organic and nonoric, lycra, and burning the organic fraction {}.}

A disadvantage of the known methods is that by burning the organic fraction, products that can be returned to the household p, 5 °. , mouth, irreversibly carried away by flue gases.

The closest in technical cywHocTH and the achieved effect is a method of treating solid waste, including shredding the waste, separating them into inorganic and organic fractions, mixing the organic fraction with 2S carrier gas and the heat source in the form of high-density Hbsx hot particles inorganic material, pyrolysis of the mixture and separation of pyrolytic gases from solid particles 2.

The disadvantage of this method is the use as a source of warm sand or other high-density solid materials that are prone to abrasion, which requires the cost of their replenishment. In addition, large sizes of equipment are required, transporting inorganic solid heat sources during the process of pyrolysis.

The purpose of the invention is to increase the efficiency of the process.

For in the method of processing solid waste, including grinding of waste, their separation. for the inorganic organisms fraction, mixing the organic fraction with the gas carrier and the heat source in the form of highly dense dense particles of solid inorganic material, pyrolysis of the mixture and separation of pyrolytic gases from the solid particles, the solid residue of pyrolysis is decarbonated and used as a heat source during pyrolysis.

In addition, the decarbonization of the carbonaceous pyrolysis residue is carried out by high-temperature oxidation, and the temperature control

Claims (2)

776576 processes are carried out by injection of water. Also, the De-Arbonized solid wasps t & TOk Pyrolysis is mixed with the initial organic fraction of the waste in a ratio of .2-20: 1. The use of heat during the pyrolysis of decarbonization aHHofo of carbonaceous yyrbly residue / permits the implementation of the process, then noBkuaef, the efficiency of the process. In addition to the tcjfo, the amount of the residual Joo-1120 kg / m is ideal for transportation through the pyrolysis process, together with the material that is used, which is in the specified zone, - I The method is carried out in a following way. . S .-, Solid organic waste / product {stage is the separation stage of large inorganic components, fine particles are crushed, the maximum measures are less than 25 my, preferably, and dried up to such a state to make it possible to transport them in the form of liquefied masses. . . . .., Drying Solid Waste TranshopTHps jot with the aid of a-carrier gas, as which the gaseous products formed in the process are used in the reactor, where they are mixed with liquid-solid; and its | the gaiic tenwa, 9gf is radiated as a result of decarbonization of the carbon residue of the pyrolysis. The process of pi |) olysis in a pyrolytic reactor is carried out with an eteiepaType of 315 ° C to feMttei aTyi and below, the sintering of solid nonorganic sr ™ heat carrier N-925c, preferred. but 245-7bO with the CONDITIONS for the passage of Ma.ccortoT6Ka through the pyrolytic reactor yo ts turbulent 1st, 4to corresponds to the numbers of onnolds more. 2UOO. The composition of the mixture fed to the reactor contains 2-20 parts by weight. solid non-bananimal coolant and one part of solid organic matter, the editor of the content. solid Inorganic heat carrier 4-, 6 weight parts. Gas-Carrier used for transportation of solid inorganic coolant and grinded to avoid any problems. 1-4. The most important factor in determining the process is maintaining HIGH MfacaortJjTo turbulence and free passage of substances through the reactor. The residence time of the fluidized mass in the pyrolysis zone is 0.1-2 s. All heat required for pyrolysis is provided by a solid inorganic coolant. The speed range of the mass flow is 0.3-6 m / s. The mass flow coming out of the reactor consists of a solid inorganic coolant, a solid carbonaceous pi-bisex product, condensed pyrolysis gases, water in the form of steam and a corresponding gaseous component. This mass is subjected to. separation, for example, in cyclones. First, the solid inorganic coolant and coarser particles of the pyrolysis residue are separated, then the average size and fine particles of the carbonaceous residue of pyrolysis and fine particles of the inorganic coolant are removed, and the remaining amount (by balance) of the finely divided particles of the carbon residue is separated in a special cycle designed to separate Shlrchi, which comes from you in the bunker-drive. The gas and condensation / 1H pyrolytic oils are released in a discharge. Solid neoreanic heat carrier and carbon angular pyrolysis residue is collected in a bunker, where Oyi is holding V 4 jy nx.-) f j. D4C wnn il J "iV4C Ab.n ba1b; ts in a fluidized state with a gas flow that is the best product of pyrolysis and used as an airway for gas. The breakaway bunker must contain a device for separating sintered pieces of material and an & and their system, {about any solid inorganic heat transfer fluid | and carbon pyrolysis come on roasting. In the calcined nea Introduce the inlet in an amount that ensures the combustion of 80-100% of carbon, which is part of the carbon pyrolysis. To regulate | The heating temperature and the prevention of solid inorganic coolant in the kiln furnace are introduced into the furnace with water in the form of a mist, preventing local firing of the mixture and creating more favorable conditions for the interaction of water with carbon. The residence time of the calcined mixture in the foam is 0.4–3 s, the temperature is 675–900 ° C, which ensures that the desired degree of carbon removal is achieved (6y. Diesel gases — and burnt decarbonized 11 ovine inorganic heat transfer agent 1 comes from the furnace and 1 cyclooy-sePa1 ators, from {vessels solid inorganic coolant is collected in a pulsation bunker, where it is spent some time. If the decarbonization process is not completed in the furnace, then it is completed in this bunker by supplying air as a squeezing gas ase and iodine for temperature control. Since the inorganic coolant is generated in the process in quantities substantially exceeding that required for recirculation to the pyrolytic reactor, the excess of it is continuously withdrawn from the pulsation bunker, cooled and removed from the system as a finished product. The pulsation bin should maintain the optimum process mode, in which the solid heat transfer medium contains less than 50% of fly ash, and the flying ash It should have a particle size greater than 10 microns and generally coolant must have a particle size distribution in which 50% of the particles have a size greater than 37 microns. The decarbonated inorganic coolant from the pulsation bin in a fluidized state is picked up by the carrier gas and transported to the pyrolytic reactor where it is mixed with organic solid waste in a certain ratio and the process of solid waste recycling is repeated. The use of solid inorganic coolant is more reliable from the point of view of controlling and controlling particle size than using carbon material itself or other solid materials, which causes abrasion and grinding in the process of use (and, turning into small particles, contaminated with pyrolytic MC1 layer and gas flows. Solid inorganic coolant obtained as a result of the almost complete decarbonization of the carbonaceous pyrolysis residue; resistant to abrasion, which makes it possible to sufficiently regulate the size of the particles used: In the pyrolysis reactor, to significantly simplify the process of waste processing and the process control mechanism.Forenizer 1. Method for processing solid waste, including grinding waste, separating them into inorganic I organic fractions, mixing 6p of anichey fractions with a gas-carrier medium with a heat source in the form of high-density hot particles of solid inorganic material, pyrolysis of the mixture and separation of pyroliTich gas from solid particles, characterized in that, in order to increase the efficiency of the process, the solid residue is decarbonated and used as a heat source during pyrolysis, 2. The method according to claim 1, characterized in that the decarbonization of the carbon residue of pyrolysis is carried out by means of high-temperature oxidation, the process temperature control is carried out by water injection. 3. The method according to paragraphs. 1 and 2, of which there is one. That the decarbonated solid pyrolysis residue is mixed with the original organic waste fraction in a ratio of.-20: i. Sources of iff01ation taken into account during the examination 1. Thermal methods of waste disposal. Ed. Vogushevskoy K.K. and others. L., Himi,. 2. Young Richard A-Treating refuse by pyrolysis, Pollut, End, 1975, V7 B 3 pp. 45-46.