摘要:
A method for the production of energy, fuels, and/or chemical raw materials, comprising the following steps: allothermic steam gasification of renewable raw materials and/or waste gases of the subsequent process by means of an impulse burner; gas scrubbing; gas cooling; gas compression to the levels required for the subsequent processes; shift reaction for converting the CO to H2, adjustment of the H2/CO ratio of the raw biosynthesis gas to the requirements of the; gas scrubbing, removal of trace materials which are catalyst poisons for the following process steps; for example, described according to the Rectisol process; production of one or several of the following products: methanol synthesis for the production of methanol as a fuel and raw material for chemical products and fuels; Fischer-Tropsch synthesis and workup of the products to make fuel; production of H2 based on the biosynthesis gas.
摘要:
To produce syngas from reactants that contain carbon, by means of gasification in a fluidised bed reactor (2), firstly a first, low-lying fluidised bed region (7) of the fluidised bed reactor (2) is heated to a first gasification temperature by an external supply of energy. This low-lying fluidised bed region (7) is received in a first, low-lying fluidised bed housing section (4) of a housing (3) of said fluidised bed reactor (2). The first gasification temperature is below a softening temperature of the reactants or their ash, and heating to this first gasification temperature is carried out using a first heating device (12). A second reactor housing section (5), which is higher than the first fluidised bed region, is heated to a second gasification temperature by an external supply of energy, and heating to this second gasification temperature is carried out using a second heating device (18). The reactants are supplied to the first fluidised bed region (7) by means of a supply device (20), and a discharge device (22) is used to discharge the syngas which has been produced. The invention relates to a resulting method and device for producing syngas from reactants that contain carbon, wherein undesired adhesion is reduced or, as far as possible, completely eliminated at standard gasification efficiency, even when using reactants that have critical softening points.
摘要:
A fluid bed reactor has a reaction vessel with a compartment configured to process a reactive material to form one or more products. Attached to the reaction vessel is at least one heat transfer module which includes a pulse combustor and an associated acoustic chamber. The pulse combustor has at least one tailpipe that terminates in its associated acoustic chamber. Flue gases exiting the tailpipe(s) pass from the acoustic chamber, through a wall separating the acoustic chamber from the reactor vessel and into heat transfer tubes that protrude into a compartment of the reactor vessel. Feedstock inlets are configured to introduce the reactive material into a region that is vertically between the first and second clusters of heat transfer tubes. The heat transfer tubes have an annular construction such that the flue gases pass through an inner shield tube in a direction away from the wall, turn around, and return in a direction towards the wall where they are directed to a manifold. A first cluster of heating conduits at least partially occupies the compartment and extends over a first vertical extent within the compartment. A second cluster of heating conduits partially occupies the compartment and extends over a second vertical extent within the compartment. The first cluster of heating conduits is vertically below the second cluster of heating conduits and spaced apart therefrom by a first separation distance.
摘要:
Transporting system for introducing biomass into a gasifier, comprising: a stuffing screw (9), which forces the biomass into the gasifier, wherein the stuffing screw is formed in such a way that the biomass is compressed, in order on the one hand to provide a feed against a pressure in the gasifier and on the other hand to leave gas and bedding material in the gasifier, with a shut-off slide (16, 11), which is adjacent to the stuffing screw and during downtimes shuts off the stuffing screw such that heat, vapour and gas cannot escape.
摘要:
The invention relates to heat exchanger tubes that have the same effect as the resonant tubes of a Helmholtz resonator and that are used as swirl tubes. Owing to their geometrically deformed surfaces, said tubes are capable of substantially increasing the heat transfer in the boundary layers defining the heat flux to be exchanged.
摘要:
A gasifier system and process comprises a pulse combustion device in communication with a fluid channel for producing a gas stream having heat or fuel value. The pulse combustion device is operated under sub-stoichiometric conditions such that combustion and steam reforming both occur in the fluid channel. The pulse combustion device also produces a pulsating combustion product stream and an acoustic pressure wave. The acoustic pressure wave serves to cause agglomeration of particles contained within the combustion stream for easy removal. In one embodiment, a sulfur capturing agent is injected into the fluid channel for not only removing sulfur from the combustion product stream but for also facilitating particle agglomeration. Ultimately, a gas stream containing hydrogen is produced that may be used in various processes, such as in the production of electricity.
摘要:
The invention relates to a method for extracting combustion gases with a high calorific value. According to said method, materials containing carbon are allothermically gasified in a fluidised bed which contains particles of solid matter, using a gaseous gasification agent and the addition of heat and the gases thus produced are then extracted separately from the solid-matter particles. The method is characterised in that the solid-matter particles are indirectly heated in a first descending bed and are fed to a second ascending fluidised bed, in which the fluidised bed effect is formed and the main part of the gasification process takes place. The invention also relates to a device for carrying out said method.
摘要:
A method and device for gasification of additives to form synthesis gas, comprising a gasifier (11) having at least one impulse burner (12), with a fluid bed in the gasifier (11), wherein the fluid bed is maintained, by means of an input nozzle which feeds steam and/or synthesis gas and/or particulate matter into the reactor, in a controlled movement such that the size of the reaction zone increases.