The invention relates to a method and device for producing a
gasoline blended component with high
octane number from
refinery gas and
light hydrocarbons, belonging to the technical field of
aromatization of
light hydrocarbons. The device comprises heating furnaces, reactors and an absorption-
desorption tower which are serially connected, and is characterized in that: (1) two groups of the heating furnaces and the reactors that are parallelly connected are used for cycle operation; (2) in the reactor, the
process conditions are as follows: the
reaction temperature is 320-420 DEG C, the pressure is 0.8-2.0 MPa, the
mass space velocity of 0.4-0.8 h<-1>, and the
mass ratio of light
hydrocarbon component to low-
octane number
gasoline is (30:70)-(10:90); (3) the light
hydrocarbon component in the reactor is one of
catalysis dry gas, coking
dry gas and catalytic coking liquefied gas or a mixture thereof; and the low-
octane number
gasoline is one of ordinary / reduced pressure straight-run gasoline, field condensate oil, hydrogenated
naphtha and cracked gasoline or any combination thereof; and (4) a stabilizer column and a heavy component eliminating
tower are serially connected on the rear side of the absorption-
desorption tower. The method and the device provided by the invention adopt two groups of the heating furnaces and the reactors that are parallelly connected for cycle operation, so as to realize
continuous operation of reaction regeneration. In addition, the method and the device have strong adaptability and low
energy consumption, and can directly remove part of the heavy components in the gasoline component so as to reduce the dry point of the gasoline product. During regeneration, the suction pressure regeneration combined process is used, so as to greatly shorten the coking time.