摘要:
Apparatus for the manufacture of charcoal, comprising a unit having walls defining a primary combustion chamber, and a material inlet for allowing a feed of wood chips though said material inlet into said apparatus. A trough is located at a lower height than said material inlet such that material passing through said material inlet is able to fall into the trough. An air inlet is located below the material inlet such that, when wood chips are located within the trough piled up to said material inlet, air passing from said air inlet passes through said wood-chips and into the primary combustion chamber.
摘要:
The present invention provides a pyrolysis system comprising an entrained flow pyrolyser having an opening through which biomass can be added. The pyrolyser also has an inlet for hot exhaust gas, an outlet for pyrolysed biomass and an outlet for syngas. The system has a burner for producing hot exhaust gas and a conduit between the burner and the hot exhaust gas inlet. A syngas extraction means for extracting syngas from the pyrolyser. The syngas extraction means extracts syngas from the pyrolyser at a rate such that the internal pressure within the pyrolyser never exceeds the pressure external to the pyrolyser.
摘要:
A process for quenching, separating and collecting targeted components of a hot pyrolysis product stream from the pyrolysis of biomass is provided. The process utilizes rapid quenching and electrostatic precipitation at a predetermined temperature in order to selectively collect one or more fractions of the hot mixture.
摘要:
According to the invention pulverized solid fuel is processed by heating the fuel to a temperature at which thermal decomposition of the fuel begins and subsequently heating the fuel to a temperature at which an intense thermal decomposition of the fuel takes place to form a vapor-and-gas suspension containing pulverized particles, gas, tar vapors and pyrogenic water vapors. The resultant vapor-and-gas suspension is cooled in a chamber by water and/or pyrogenic water to a temperature from 360.degree. to 140.degree. C. at which pulverized solid particles adsorb heavy tar. To obtain the resulting product in the form of a pulp, the vapor-and-gas suspension is cooled for a second time to a temperature from 80.degree. to 20.degree. C. at which the fractures of intermediate and light tars are condensed.Combustion heat of resulting solid matter is higher than that of the product obtained by a conventional method; in addition, it may be conveyed by a water channel. The resulting product in the form of a pulp may be conveyed by a water channel directly to the consumer. When practising the method, such side product as pyrogenic water is utilized which is usually purified prior to disposal.
摘要:
Solid particles are transferred from a standpipe or similar vessel in which a stream of particles moves downwardly in dense phase flow to a transfer line burner or other vessel in which the particles are carried upwardly in dilute phase flow by withdrawing the downwardly moving dense flow stream of particles from the first vessel, reducing the cross-sectional area of the stream of particles by a factor of from about 1.2 to about 10 while introducing sufficient gaseous fluid to maintain the particles in dense phase flow, directing the stream of particles of reduced cross-sectional area upwardly into the second vessel while injecting sufficient additional gaseous fluid upwardly into the stream of particles to aerate the particles without producing dilute phase flow, and thereafter introducing additional gaseous fluid upwardly into the second vessel in a quantity sufficient to produce a rapid transition from dense phase flow to dilute phase flow.
摘要:
FINE-GRAINED COKE IS PRODUCED BY A CARBONIZATION OF FINE-GRAINED COAL BY A TREATMENT WITH A HOT GAS. THE COAL TRICKLES DOWN IN A COUNTERCURRENT TO THE RISING HOT GAS PAST FIXTURES WHICH RETARD THE FREE FALL AND OCCUPY UP TO 50% OF THE CROSS-SECTION OF THE FLOW. THE COAL MAY IN THAT WAY BE MADE SUITABLE FOR USE IN MAKING BRIQUETTES.