Comprehensive utilization system for waste heat and waste pressure in sulfuric acid production

Abstract

The invention discloses a comprehensive utilization system for waste heat and waste pressure in sulfuric acid production. The comprehensive utilization system comprises a fluidized bed combustion boiler, a waste heat boiler, a steam turbine and an electric generator. An air outlet of the fluidized bed combustion boiler is connected with an air inlet of the waste heat boiler. An air outlet of the waste heat boiler is connected with an air inlet of the steam turbine. The steam turbine is coaxially connected with the electric generator. The comprehensive utilization system is characterized by further comprising a crystallization tank, a curing kiln and a condensate water collection pool. An air outlet of the steam turbine is connected with an air inlet of the crystallization tank. An air outlet of the crystallization tank is connected with a spray device of the curing kiln. The bottom of the curing kiln is connected with a water inlet of the condensate water collection pool. A water outlet of the condensate water collection pool is connected with a water inlet of the fluidized bed combustion boiler. According to the comprehensive utilization system, the waste heat and the waste pressure are utilized comprehensively, so that the purpose of stepped use of energy is achieved, and the comprehensive utilization system has great significance in saving energy.

Description

technical field [0001] The invention relates to the technical field of recovery and utilization of waste heat and pressure in the production process of chemical enterprises, in particular to a comprehensive utilization system of waste heat and pressure in the production of sulfuric acid. Background technique [0002] In the production process of chemical enterprises, especially in the production of sulfuric acid, a large amount of heat is usually generated. The most common way to utilize heat energy is to convert it into steam and use it for waste heat power generation, such as the Chinese utility model patent "A kind of calcium sulfate to produce sulfuric acid The thermal cycle equipment" converts the waste heat in the process of producing sulfuric acid from calcium sulfate into the kinetic energy of water vapor to drive the generator to generate electricity, realizing the effective recycling of heat, but the steam still has a high temperature of up to 200°C after power gene...

AI Technical Summary

Problems solved by technology

A large amount of waste heat is usually generated in the production of sulfuric acid and is only used for power generation. Not only the economic value is low, but also the heat energy utilization efficiency is not high, which will cause a considerable part of energy to be wasted

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