Calcinator for industrial by-product gypsum

Abstract

The invention discloses a calcinator for industrial by-product gypsum. The calcinatory comprises a calcination chamber, wherein a feeding port is formed in the upper end of one side of the calcination chamber, and a discharging port is formed in the lower end of the other side; multiple overflow adjusting plates are arranged in the calcination chamber; the multiple overflow adjusting plates are uniformly mounted in the calcination chamber and divide the calcination chamber into multiple calcination cavities; a heat exchange system is mounted in each calcination cavity and comprises a steam pipe and fins mounted on the outer side of the steam pipe, the steam pipe is of a bending structure from top to bottom, a steam inlet is formed in the upper end of the steam pipe, and a condensate outlet is formed in the lower end. The calcinator for industrial by-product gypsum has the advantages of uniform heating, constant temperature, short standing time, high heat transfer efficiency and low energy consumption.

Description

technical field [0001] The invention relates to an industrial by-product gypsum calciner. Background technique [0002] my country is a developing country, the national economy is developing rapidly, and the demand for electricity continues to rise, while my country's electricity mainly depends on thermal power generation. At present, the main technology for the prevention and control of sulfur dioxide pollution in domestic coal-fired power plants is "limestone-gypsum wet method", desulfurization The output of gypsum will increase rapidly with the construction and operation of flue gas desulfurization equipment. At the same time, my country is also a large country of industrial by-products such as phosphogypsum, citrate gypsum, fluorine gypsum, salt gypsum, monosodium glutamate gypsum, chlor-alkali gypsum, copper gypsum, titanium gypsum, etc. The output of industrial by-product gypsum in my country is huge, with an increase of 180 million tons per year, involving nearly 10,0...

AI Technical Summary

Problems solved by technology

The output of industrial by-product gypsum in my country is huge, with an increase of 180 million tons per year, involving nearly 10,000 emission enterprises. At present, the total stockpiles have exceeded 800 million tons, and the comprehensive utilization rate is less than 30%.

At present, fluidized bed calciner, tube-bundle rotary kiln, flash furnace and other calcining equipment are widely used in China. All of them have small scale and unsound supporting facilities. The key point is that they cannot solve the problems of unstable product quality and high energy consumption.

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