| 摘要 |
PURPOSE:To cause efficient and complete combustion of coal and water slurry, by a method wherein coal and water mixture atomized particle compressed within a reaction burner at a high temperature by means of a high temperature preheat swirl air flow, and water gas conversion reaction is created by retension phenomenon to cause simultaneous combustion of produced high calorie gas. CONSTITUTION:A secondary air from a blower 16 enters an air preheat cylinder 14 and is devided into two flows, the one flow enters an outer cylinder 15 through an air intake port 20 and the other through an air intake port 21 enters the outer cylinder for further heating. A preheated air through the intake port 20 is injected as a swirl flow in an inner cylinder 10 through pores 17, and a preheated air through the intake port 21 is blown out at an inclination angle of about 45 deg. through pores 18 toward the rear. Coal and water mixture atomized particle mixed and compressed by means of the preheated secondary air stays within the inner cylinder heated to about 700-1,000 deg.C, granulated waterdrop is evaporated by high heat together with gas produced from coal to cause water gas conversion reaction. The generated hydrogen or reaction production water gas and atomized pulverized coal particle are mixed together for combustion. Beside, by means of oxygen simultaneously generated resulting from decomposition of water, complete combustion is effected at a low air ratio. |
