High-density pressurized fluidized bed coal gasification apparatus and method
A high-density, coal gasification technology, applied in the field of coal gasification, can solve the problems of difficult treatment of by-product tar and phenol, low investment in carbon conversion rate, and low oxygen consumption in the gasification process, so as to improve gasification intensity and overcome carbon conversion The effect of low carbon conversion rate and high carbon conversion rate
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[0022] See attached figure 1 with figure 2 The gasification reactor 1 is divided into dense-phase turbulent fluidization section 9, high-density ring core flow section 10, high-density fast flow section 11, and pressurized sections are performed according to the gasification characteristics of high sulfur, high ash, and high ash melting point coal. The gasification pressure is 1.0~2.5MPa. The dense-phase turbulent fluidization section 9 is a dense-phase zone with a particle volume concentration of 0.3 to 0.45 and a material layer height of 2 to 5 m. It adopts a turbulent fluidization operation mode with a temperature of 850 to 1050 degrees and a gas velocity of 1 to 1.5 m / s. The function is to realize the good mixing and heat and mass transfer of bed material, coal and limestone A, gasification agent Q and primary return material H, as well as the devolatilization, combustion and partial gasification reaction of coal; the particle size of the bed material is 0~3mm inert bed mate...
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