| 摘要 |
FIELD: chemistry.SUBSTANCE: method includes crushing and mixing organic components of urban and industrial rubbish with addition of peat or wooden wastes; heating charge in screw heater through wall with flue gases, supplied from thermal reactor jacket, as a result charge obtains form of paste, in which unmelted solid particles and gas bubbles are distributed; degassing of charge in degadding device with separation of primary gas, dispersion of degassed charge in extruder with formation of granules and their cooling in cooler-granulator by means of outer air; continuous supply of granulated charge by screw feeder into shelltube reactor for carrying out continuous pyrolysis process, with simultaneous supply for combustion into reactor combustion chamber burner of purified pyrolysis gas, primary gas and hot air, combustion of which results in obtaining hot flue gases, flowing about thermal reactor jacket, after which they are supplied into waste heat boiler, with column of granulated charge in pyrolysis tube of reactor slowly moving from top to bottom, being subjected to destruction, which results in formation of pyrolysis gas and semicoke, which are discharged from pyrolysis tube at the bottom into collector of pyrolysis products, from where pyrolysis gas is supplied to cooling and purification, with semicoke being removed through discharge and cooling screw, cooled by network water; cooling and purification of hot pyrolysis gas in vertical refrigerator and rotation adsorber, filled with adsorbent - granules of metallurgical slag, after which purified and cooled pyrolysis gas is supplied for combustion into combustion chamber, its excess is supplied to consumer or into gasholder, from conic tray of rotation adsorber and settling tank water, containing water-soluble admixtures and resin, is supplied for further recycling, and flue gases from screw heater are supplied to heater of network water.EFFECT: increased reliability, economical and ecological efficiency of utilisation of organic components of urban and industrial wastes.2 cl, 4 dwg |
