Novel fast scarlet base G production process

The invention relates to a novel fast scarlet base G production process. A fast scarlet base G is an important constituent of an insoluble azo dyestuff and is mainly used for dyeing and printing a cotton fabric; the fast scarlet base G is coupled with azoic coupling component AS or AS-D to dye fast scarlet (Chinese red), can also be used for dyeing silk, viscose and nylon fabrics and is also used as an intermediate of an organic dyestuff. In a nitrification process, nitric acid and sulfuric acid are mixed at the ratio of 1 to 1.3 and then are nitrified; 50 percent of the sulfuric acid is cyclically utilized so that the flowability and conduction of a system are improved; liquid ammonia is used for neutralizing to obtain a byproduct with relatively high additional value; at a nitrification phase, the size of a kettle is enlarged and the kettle is made of 316L; meanwhile, a 5m built-in coiled pipe is additionally arranged in the kettle when a jacket is used for cooling, so that the cooling speed is greatly impr