Limestone-gypsum wet flue gas desulfurization synergist and preparation method thereof

Abstract

The present invention discloses a limestone-gypsum wet flue gas desulfurization synergist, which comprises, by weight, 70-90 parts of an organic acid salt, 5-20 parts of an organic anhydride, and 5-15 parts of a surfactant. According to the present invention, the type of the component of the desulfurization synergist is simplified while the obtained synergetic desulfurization effect is good; due to the excellent and stable desulfurization effect, under the same conditions, the used raw materials are less, the production cost of the enterprise is low, and the performance price ratio is high; and the sodium diacetate accounting for the absolute proportion in the desulfurization synergist components is the internationally-recognized efficient, safe and inexpensive food additive, and has characteristics of good safety and good environmental protection during the production process, the storage and transportation process, the use process and other processes.

Description

technical field [0001] The invention relates to the field of wet flue gas desulfurization, in particular to a limestone-gypsum wet flue gas desulfurization synergist and a preparation method thereof. Background technique [0002] With the rise of China's economy, China's international responsibilities in the international community are becoming heavier, especially the pressure on environmental protection is getting heavier, and the country's requirements for thermal power emission reduction are getting higher and higher. Capacity has been increasingly unable to meet the country's environmental protection requirements. At the same time, with the continuous increase of thermal power units in recent years, the supply and demand relationship in the coal market has undergone great changes. Due to the change in supply and demand relationship, the type of coal burned in thermal power plants has changed accordingly. Since 2005, thermal power plants in my country began to install fl...

AI Technical Summary

Problems solved by technology

In addition, the addition of traditional organic acids (including adipic acid) can reduce the particle size of limestone and enhance the reaction rate of limestone, but it has high requirements for the dosage, dosage and monitoring, and the pH fluctuation will increase with the prolongation of use time. The problem of reduced efficiency

Therefore, the use of organic acids such as adipic acid will cause fluctuations in pH value, which is not conducive to the stable and continuous desulfurization, which will inevitably lead to increased raw material addition and increased production costs for enterprises.

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