Desulfurizer compounded by industrial wastes and production method thereof

Abstract

A desulfurizer compounded by industrial wastes and a production method thereof separately relate to a desulfurizer and a production method thereof. The desulfurizer uses carbide slag, iron-making slag and coal ash slag as basic materials and is an efficient compound desulfurizer used in the dry desulphurization of the circulating fluidized bed boiler, wherein the mixing percentages of carbide slag, coal ash slag and steel slag powder are 30-40%, 50-60% and 10-5% respectively. The production method comprises the following steps: crushing and grinding carbide slag and steel slag to powder of being less than 100 microns, screening coal ash slag to obtain particles of 1-2 mm, performing hydration treatment according to the percentages, placing in a stirrer to fully stir, drying, and screening to obtain the product, wherein the particle size of the qualified product is 1-2mm through inspection. When the ratio of Ca / S is 2.5, the desulphurizing rate of the desulfurizer of the invention is more than 80%; the processing equipment is simple, the investment cost and operating cost are low; and the existing consumption technology and equipment are not changed and the boiler efficiency and the electricity consumption of the fan are not obviously affected. The desulfurizer of the invention can be popularized in the desulfurization of the circulating fluidized bed boiler.

Description

technical field [0001] The invention relates to a desulfurizer and a production method thereof, in particular to a desulfurizer compounded from industrial production waste and a production method thereof. Used to reduce sulfur dioxide emissions during coal combustion. Background technique [0002] Coal is the main energy source in our country. Because coal contains organic sulfur and inorganic sulfur, SO will be produced during the combustion process. 2 , causing serious harm to the ecological environment on which human beings depend. my country issued a call for "energy saving and emission reduction" in the "Eleventh Five-Year Plan", and the waste gas emission of power enterprises is the key monitoring object. According to my country's current national conditions, in order to reduce pollution, the first is to adopt corresponding management methods, that is, to levy sewage charges and limit the total amount of pollutant discharge; at the same time, encourage enterprises to...

AI Technical Summary

Problems solved by technology

However, the existing CFB boilers that mainly use limestone in the furnace for desulfurization, in addition to the high cost of raw material preparation and use, have a big defect that the desulfurization effect is poor, mainly because the desulfurization products are produced under high temperature conditions. It will decompose again and cause the desulfurization efficiency to decrease rapidly

Images