Claims:WE CLAIMS
1. Our invention Method and Process to Produce the Oxalic Acid from Molasses is a Oxalic acid is the simplest of dicarboxylic acid. Its name is derived from the Greek Oxyes meaning sharp, acidic serfering to the acidity common in the foloage of certain plants from which it was first isolated. Oxalic acid is commercially available as the dehydrate containing 28.5% water. It is a monoclinic prism, particles size varying from fine powder to coarse granules which are also colorless, melting point 187oC of anhydrous form and 101.5oC of dehydrate form. Oxalic acid is one of the most widespread organic acid in plants. In this project a commercial method of preparation of Oxalic acid at 30 tons per day is presented using molasses as the starting material. This project also highlights the material & energy balance as well as description of a few equipments used in this process. Other important features include cost estimation, instrumentation& process control of equipment used in the process & a possible plant layout based on scientific principles & commercial requirement. Cane molasses is produced the industrial ethanedioic acid method. The invention belongs to the making method of oxalic acid. The invention adopts the impurity of the pre-treatment of molasses being removed molasses, uses " V in the nitric acid oxidation reaction of molasses 2O 5-Fe 3+-MoO 4 2-" catalyst system and molasses cyclic oxidation, the oxalic acid purifying, thus improved productive rate and purity. Technical process of the present invention is simple, and device fabrication is easy, and energy consumption is low, and environmental pollution is low, the economic benefit height.
2. According to claim1# the invention is to a Method and Process to Produce the Oxalic Acid from Molasses is a Oxalic acid is the simplest of dicarboxylic acid. Its name is derived from the Greek Oxyes meaning sharp, acidic serfering to the acidity common in the foloage of certain plants from which it was first isolated. Oxalic acid is commercially available as the dehydrate containing 28.5% water.
3. According to claim1,2# the invention is to a monoclinic prism, particles size varying from fine powder to coarse granules which are also colorless, melting point 187oC of anhydrous form and 101.5oC of dehydrate form. Oxalic acid is one of the most widespread organic acid in plants. In this project a commercial method of preparation of Oxalic acid at 30 tons per day is presented using molasses as the starting material.
4. According to claim1,2,3# the invention is to a highlights the material & energy balance as well as description of a few equipments used in this process. Other important features include cost estimation, instrumentation& process control of equipment used in the process & a possible plant layout based on scientific principles & commercial requirement. Cane molasses is produced the industrial ethanedioic acid method. The invention belongs to the making method of oxalic acid.
5. According to claim1,2,4# the invention is to a impurity of the pre-treatment of molasses being removed molasses, uses " V in the nitric acid oxidation reaction of molasses 2O 5-Fe 3+-MoO 4 2-" catalyst system and molasses cyclic oxidation, the oxalic acid purifying, thus improved productive rate and purity.
6. According to claim1,2,5# the invention is to a simple, and device fabrication is easy, and energy consumption is low, and environmental pollution is low, the economic benefit height.
, Description: Reactants are taken from every section using custom-made storage tanks. These consist of special liquid collection rings which are machined into the section connectors. Pt100 temperature probes are inserted between every section. Additional temperature probes are placed at the inlets and outlets and in the recycled cleaned gas phase.

Three pressure transmitters from Bugh& Bønsøe – the Tensto 6300 series – are placed in the bottom, middle, and top of the column, as indicated by PI1, PI6, and PI11.The gas phase composition is measured at the outlet of the column, Ci1 . The Nitrogen dioxide transmitters used are Vaisala CARBOCAP® series GMT221. These cover a specified range, with a ±2% expected accuracy of the full scale reading. Flow is measured manually by four calibrated rotameters (F) hydrolysis and oxidation.

Sucrose (C) as the main ingredient in molasses12H22O11) Hydrolyzing to glucose (C) under the action of sulfuric acid6H11O6) The oxidation of glucose with nitric acid produces oxalic acid (H)2C2O4) In the present invention, oxalic acid is prepared in one step.

Since nitric acid not only oxidizes glucose into oxalic acid, but nitric acid also further oxidizes oxalic acid into carbon dioxide, the amount of nitric acid used is increased. But also reduce oxalic acid.

The extraction rate of (4). In the existing oxalic acid oxidation production method, vanadium pentoxide is generally used as a main catalyst, and auxiliary catalysts such as iron, titanium and the like are added. In the present invention, the term "V" is used2O5-Fe3+-MoO2- 4The composite catalyst system can not only fully oxidize glucose into oxalic acid through nitric acid, but also more effectively inhibit the deep oxidation of oxalic acid.

In order to improve the product yield of oxalic acid and save raw materials, mother liquor circulation is adopted under normal operation conditions in the hydrolysis and oxidation stages, and necessary amounts of catalyst and sulfuric acid are supplemented properly according to the conditions specified by the system. And separating the reacted oxalic acid crude product by a centrifugal machine, and purifying.