Device capable of producing 2-phosphonobutane-1,2,4-tricarboxylic acid through batch process

The utility model discloses a device capable of producing 2-phosphonobutane-1, 2, 4-tricarboxylic acid through the batch process. The device is characterized by comprising an esterification kettle, a one-step addition kettle, a two-step addition kettle, a dropwise adding tank I, a dropwise adding tank II, multiple hydrolysis kettles, condensers and a methyl alcohol recycling tank, wherein the esterification kettle is connected with the one-step addition kettle through a pipeline; the dropwise adding tank I is connected with the one-step addition kettle through a pipeline; the one-step addition kettle is connected with the two-step addition kettle through a pipeline; the dropwise adding tank II is connected with the two-step addition kettle through a pipeline; the two-step addition kettle is connected with the multiple hydrolysis kettles connected in parallel through a pipeline; each hydrolysis kettle is connected with the corresponding condenser in series; the tail ends of the condensers are connected with the methyl alcohol recycling tank. The device enables the multiple kettles to simultaneously react through the batch process, reasonably utilizes equipment and heat, shortens the time required by temperature change, increases the productivity and improves the product quality through the special kettles for special purposes.