Combined heat-work production comprehensive utilization method for chemical energy produced in production of fumaric acid

Abstract

The invention relates to a combined heat-work production comprehensive utilization method for chemical energy produced in production of fumaric acid. In production of fumaric acid by using a benzene oxidation process, considerable heat energy is released and is forced to circulate by using a molten salt, and circulating condensed water is used as a medium to absorb heat emitted by the molten salt to produce saturated steam which enters into a steam pocket to form saturated vapor with a pressure of 1.5 Mpa; the saturated vapor with a pressure of 1.5 Mpa enters into a steam turbine through a pipeline and works through expansion so as to drive the steam turbine to rotate, and a main shaft of the steam turbine is connected with a large power blower fan to assist a motor in driving of the blower fan so as to save electric energy; the pressure of the vapor is reduced to 0.5 Mpa after the saturated vapor passes through the steam turbine, the vapor with reduced pressure is directly conveyed to a production workshop for heat energy supply for production process, the vapor is condensed into water after heat in the vapor is released, and the water can be cyclically used in a whole system. The method provided by the invention realizes full and effective usage of a chemical energy resource produced in production process of organic acid-amino acid, which is of critical theoretical and practical significance for saving of production cost of an enterprise, improvement of market competitiveness of a product and promotion of sustained, stable and sound development of the enterprise.

Description

technical field [0001] The invention relates to the comprehensive utilization of chemical energy resources in the production process of fumaric acid. Background technique [0002] Fumaric acid, also known as fumaric acid, fumaric acid, English name fumaric acid, trans-Butene dioic acid, is widely used in food, medicine, chemical industry, paint, resin, plasticizer and other fields. [0003] At present, the most commonly used production method in the production of fumaric acid is the production of maleic anhydride by benzene oxidation, water absorbs maleic anhydride to generate maleic acid, and then generates fumaric acid through isomerization. Its production process is that petroleum benzene passes through a catalyst fixed-bed reactor, and at a reaction temperature of 350-420°C, maleic anhydride is generated, and maleic anhydride is absorbed by water to obtain a maleic acid aqueous solution with a concentration of about 35%. The aqueous solution of olefinic acid is decolori...

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Problems solved by technology

If the saturated steam formed is not utilized, it will be released into the environment in vain, resulting in a waste of energy resources

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