Leather non-pickling salt-free high-absorption chrome tanning process method

The invention provides a non-pickling salt-free high-absorption chrome tanning process method for leather. The method comprises the following steps: step 1, weighing and metering; step 2, soaking in water; step 3, liming; step 4, washing with water; step 5, pre-deliming; step 6, deliming and softening: adding 0.5-1 time of 30 DEG C water, adding 0.8% of a deliming agent and 0.2% of a degreasing agent, adding sulfuric acid to adjust the pH value to 3.5, and adding 0.5% of softening compound enzyme and 0.5% of an auxiliary agent; step 7, washing with water; step 8, chrome tanning; step 9, adding acid: adding formic acid and rotating for 30 minutes, wherein the use amount of the formic acid is 0.4-0.5% of the tare weight of the raw materials; step 10, adding acid for several times; the method has the characteristics that the production cost is saved, the environmental pollution is reduced, and the quality index of a finished product is not reduced by promoting chrome tanning absorption. 本发明提供一种皮革不浸酸无盐高吸收铬鞣工艺方法，该