Separation and purification method for malic acid production

The invention relates to the technical field of malic acid production, and discloses a separation and purification method for malic acid production, which comprises the following steps: putting pulp used for preparing malic acid into squeezing equipment, separating the pulp from fruit juice through the squeezing equipment, taking out the squeezed fruit juice, putting the fruit juice into heating equipment, and heating the fruit juice to a constant temperature; heating the squeezed juice through heating equipment until the juice in the juice is boiled, taking out the boiled juice, standing until the juice is cooled, and sequentially adding a proper amount of sulfuric acid, calcium carbonate and lime milk. According to the fruit juice squeezing device, juice in fruit pulp can be rapidly squeezed out, impurities in the squeezed juice can be separated at the same time, it is avoided that multiple devices need to work, the working efficiency is high, the cost is saved, fruit residues obtained after juicing can be