A method of reducing overall coke yield in delayed coking process, said method comprising the steps of: a) passing a fresh hydrocarbon feed to the bottom of a main fractionator and mixing with an internal recycle to make secondary hydrocarbon feedstock; b) heating the secondary hydrocarbon feedstock in a furnace to obtain a hot feed at a desired inlet temperature of a pre-cracking reactor; c) passing the hot feed at desired temperature and pressure to the pre-cracking reactor, wherein the hot feed undergoes mild thermal cracking reactions to obtain an outlet product material stream; d) introducing the outlet product material stream to a first intermediate separator to split hydrocarbons in the outlet material stream into a top fraction and bottom fraction, wherein the top fraction comprises of lighter products and gases and the bottom fraction is split into a first portion and a second portion; e) routing the top fraction to the main fractionator; f) separating the first portion of the bottom fraction in a second separator column operating in vacuum conditions to obtain top product, heavier product cuts and a bottom product; g) passing the top product obtained in step (f) to the main fractionator; h) withdrawing the heavier product cuts from the second separator of step (f) and passing to the main fractionator, wherein the heavier cuts comprise of Light Vacuum Gas Oil (LVGO) and Heavy Vacuum Gas Oil (HVGO); i) mixing the second portion from the first intermediate separator of step (d) and the bottom product from the second separator column of step (f) and heating in a furnace to a desired coking temperature to obtain a hot hydrocarbon stream; j) passing the hot hydrocarbon stream from the furnace to a preheated coke drum; and k) passing the product vapors exiting the coke drum to the main fractionator column to obtain product fractions. a) passing a fresh hydrocarbon feed to the bottom of a main fractionator and mixing with an internal recycle to make secondary hydrocarbon feedstock; b) heating the secondary hydrocarbon feedstock in a furnace to obtain a hot feed at a desired inlet temperature of a pre-cracking reactor; c) passing the hot feed at desired temperature and pressure to the pre-cracking reactor, wherein the hot feed undergoes mild thermal cracking reactions to obtain an outlet product material stream; d) introducing the outlet product material stream to a first intermediate separator to split hydrocarbons in the outlet material stream into a top fraction and bottom fraction, wherein the top fraction comprises of lighter products and gases and the bottom fraction is split into a first portion and a second portion; e) routing the top fraction to the main fractionator; f) separating the first portion of the bottom fraction in a second separator column operating in vacuum conditions to obtain top product, heavier product cuts and a bottom product; g) passing the top product obtained in step (f) to the main fractionator; h) withdrawing the heavier product cuts from the second separator of step (f) and passing to the main fractionator, wherein the heavier cuts comprise of Light Vacuum Gas Oil (LVGO) and Heavy Vacuum Gas Oil (HVGO); i) mixing the second portion from the first intermediate separator of step (d) and the bottom product from the second separator column of step (f) and heating in a furnace to a desired coking temperature to obtain a hot hydrocarbon stream; j) passing the hot hydrocarbon stream from the furnace to a preheated coke drum; and k) passing the product vapors exiting the coke drum to the main fractionator column to obtain product fractions.