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A device and method for preparing compound activator clinker by using semi-dry method desulfurization ash and application of the clinker

A technology of semi-dry desulfurization and combined excitation, which is applied in the restoration of polluted soil, etc., can solve the problems of high processing cost, low utilization efficiency of desulfurization ash, and complicated processing technology, so as to prevent downward movement, improve utilization efficiency and The effect of added value

Active Publication Date: 2022-04-19
安徽省融工博大环保技术材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of the existing semi-dry desulfurization ash oxidation treatment method, such as high treatment cost, relatively complicated treatment process or relatively low utilization efficiency of desulfurization ash, and provide a semi-dry method using sintering, coal power, etc. Device and method for preparing compound activator clinker from dry desulfurization ash and application of the clinker

Method used

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  • A device and method for preparing compound activator clinker by using semi-dry method desulfurization ash and application of the clinker
  • A device and method for preparing compound activator clinker by using semi-dry method desulfurization ash and application of the clinker
  • A device and method for preparing compound activator clinker by using semi-dry method desulfurization ash and application of the clinker

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Effect test

Embodiment 1

[0043] A device (sintered desulfurization ash oxidation treatment device) for preparing composite activator clinker using semi-dry desulfurization ash in this embodiment includes a shaft furnace 1, such as figure 2 As shown, the shaft furnace 1 includes a shaft furnace body 11, and the top of the shaft furnace body 11 is provided with a furnace cover 12, a feed port 110 and an exhaust gas discharge port 111, and its internal furnace includes a preheating section 112 distributed sequentially from top to bottom. , dehydration section 113, deep oxidation section 114, calcium hydroxide activation section 115 and discharge section 118, and the bottom of calcium hydroxide activation section 115 is provided with air disperser 116, and this air disperser 116 is connected with high-temperature air intake pipe.

[0044]The sintered desulfurization ash (semi-dry desulfurization ash produced in the sintering process, hereinafter referred to as "sintered desulfurization ash"), expanded per...

Embodiment 2

[0047] A device for preparing compound activator clinker using semi-dry desulfurization ash in this embodiment is basically the same in structure as in Embodiment 1, the difference mainly lies in that the cooler 13 of this embodiment adopts a grate cooler, and the bottom of the shaft furnace The discharged material is transported to the grate cooler through the hot clinker inlet 131, and the cold air is passed into the grate cooler through the cold air inlet 132 to cool the clinker. After cooling to room temperature, the composite activator clinker product obtained is cooled. Clinker outlet 133 is discharged. The hot blast outlet 134 of the grate cooler is connected to the air inlet 151 of the hot blast stove 15, and the air outlet 152 of the hot blast stove 15 is connected to the air diffuser 116 through the high-temperature air intake pipe. The hot air generated after heat exchange with the hot clinker in the grate cooler is heated by the hot blast stove 15 (using the waste ...

Embodiment 3

[0051] A method for preparing composite activator clinker using semi-dry desulfurization ash in this embodiment comprises the following steps: weighing respectively according to the mass ratio: sintering desulfurization ash, 95%; expanded perlite particles, 5%; and accounting for desulfurization Ash mass 50% water for batching. First add the desulfurized ash and water into the mixer to mix, and stir to form a slurry, then add expanded perlite to the slurry for stirring, the stirring time is 5 minutes, the stirring speed is 15 rpm, and the mud is formed after mixing well. Then the mud is taken out, and the mud is extruded into circular segment-shaped raw meal particles with a diameter of 10mm with an extrusion granulator, and it is first dried with a dryer to a green body with a certain strength (cylinder compressive strength 0.5MPa ), then add in the shaft furnace among the embodiment 2 and carry out deep oxidation reaction operation, reaction comprises: preheating, mud materi...

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Abstract

The invention discloses a device and method for preparing compound activator clinker by using semi-dry method desulfurization ash and the application of the clinker, belonging to the technical fields of metallurgy and flue gas desulfurization. The present invention includes the following process: mixing semi-dry desulfurization ash, expanded perlite and water according to the mass ratio, then performing stirring and mixing, granulation and drying treatment in sequence to obtain desulfurization ash raw material particles, and then using high-temperature air to dry the dried The desulfurized ash raw meal particles are heated in stages, so that the desulfurized ash raw meal particles are preheated, dried, and CaSO 3 Oxidation and Ca(OH) 2 The dehydration activation reaction, after full reaction and cooling, the main composition is CaSO 4 , CaO and SiO 2 Compound activator clinker. Adopting the technical scheme of the present invention can make the CaSO in the semi-dry method desulfurization ash 3 Sufficient oxidation occurs, effectively improving the utilization efficiency and added value of the oxidative desulfurization ash, and the treatment process is simple and low in cost.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and coal-fired power flue gas desulfurization, and in particular relates to a device and method for preparing composite activator clinker from semi-dry desulfurization ash produced by sintering and coal-fired power plants and the application of the clinker. Background technique [0002] In recent years, China's economy has developed rapidly, and the industry's demand for coal is increasing day by day. Coal combustion typically produces large amounts of SO 2 gas, the greater the consumption of coal, the more SO 2 More and more, thus creating increasingly serious acid rain pollution, which has caused great harm to the ecological balance and economic and social development on which human beings depend. Based on this, in recent years, the state has increased the SOE of major coal-fired enterprises 2 emission control efforts, and the SO 2 The reduction of the emission rate has put forward higher...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B40/00B09C1/00
CPCC04B40/0046B09C1/00C04B22/143C04B22/064C04B14/06
Inventor 樊传刚郭小雨李健生樊鲁倩樊曦李家茂
Owner 安徽省融工博大环保技术材料研究院有限公司
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