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A process for synergistically producing calcium aluminate powder using power station boilers

A power plant boiler and calcium aluminate powder technology, which is applied in the preparation of calcium aluminate, alkaline earth metal aluminate/aluminum oxide/aluminum hydroxide, chemical industry, etc., can solve the problem of unstable temperature field of rotary kiln and long product production cycle , over-burning or under-burning of raw materials, etc., to achieve the effects of stable production process parameters, improved energy utilization efficiency, and fast response speed

Active Publication Date: 2022-07-12
张保森
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional production process equipment of calcium aluminate powder is a rotary kiln, which requires large investment, complex process, long production cycle, low energy utilization rate, high cost of desulfurization and denitrification, unstable temperature field of rotary kiln, and over-burning or under-burning of raw materials

Method used

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  • A process for synergistically producing calcium aluminate powder using power station boilers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 (using pulverized coal boiler)

[0024] A process for producing calcium aluminate powder by utilizing a power station boiler, comprising the following steps:

[0025] (1) Using a microcomputer batching device to prepare raw materials, the raw materials include the following components by weight: 50% to 70% of coal, 10% to 20% of calcium oxide, 20% to 30% of alumina, and iron oxide (accounting for than 1%);

[0026] (2) After the raw materials are mixed, they are conveyed to the crusher (pulverizer) by the belt for crushing and pulverizing;

[0027] (3) The crushed powder materials are sent to the storage bin (homogenization bin) through the material conveyor;

[0028] (4) The material is controlled by the powder selection screen of the pulverizing device to control the particle size of the material to be 500~1000 mesh, and sent to the pulverized coal boiler through the boiler feeding device for combustion, and the temperature is controlled at 1200~1300 ℃;

...

Embodiment 2

[0031] Example 2 (using a fluidized bed boiler)

[0032] A process for producing calcium aluminate powder by utilizing a power station boiler, comprising the following steps:

[0033] (1) Using a microcomputer batching device to configure raw materials, the raw materials include the following components by weight: 50% to 70% of coal, 10% to 20% of calcium oxide, 20% to 30% of alumina, and gypsum (the proportion of 1%);

[0034] (2) After the raw materials are mixed, they are conveyed to the crusher (pulverizer) by the belt for crushing and pulverizing;

[0035] (3) The crushed powder materials are sent to the storage bin (homogenization bin) through the material conveyor;

[0036] (4) The material is controlled by the crusher screen to control the particle size of the material to be 0~13mm, and sent to the fluidized bed for combustion through the boiler feeding device, and the temperature is controlled at 850~1050℃;

[0037] (5) The fly ash after combustion is collected by ...

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Abstract

The invention discloses a process for synergistically producing calcium aluminate powder by using a power station boiler. A microcomputer batching device is used to prepare raw materials, and the raw materials include the following components in the following weight proportions: coal 50%-70%, calcium oxide 10%- 20%, alumina 20%~30%; after the raw materials are mixed, they are conveyed to the crusher (mill) for crushing and pulverizing; the crushed powder materials are sent to the storage bin (homogenization bin) through the material conveyor; The boiler feeding device is sent to the power station boiler for combustion; the fly ash after combustion is collected by the dust collector and enters the finished product warehouse. The invention makes full use of the characteristics of power station boilers, and converts fly ash into calcium aluminate powder products under the premise of controlling the ratio of raw materials, combustion temperature and other process indicators without affecting power generation; greatly reducing the production cost of calcium aluminate powder , improve energy efficiency.

Description

technical field [0001] The invention belongs to the technical field of preparation of calcium aluminate powder, and particularly relates to a process for synergistically producing calcium aluminate powder by utilizing a power station boiler. Background technique [0002] The traditional production process equipment of calcium aluminate powder is rotary kiln, which has large investment, complex process, long product production cycle, low energy utilization rate, high desulfurization and denitrification cost, unstable temperature field of rotary kiln, and over-burning or under-burning of raw materials. SUMMARY OF THE INVENTION [0003] Aiming at the problems existing in the prior art, the present invention provides a process for co-producing calcium aluminate powder by using a power plant boiler. By using a power plant (station) boiler, while taking into account the power generation, the fly ash is converted into calcium aluminate powder instead of Rotary kiln. [0004] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/164
CPCC01F7/164Y02P20/10
Inventor 张保森
Owner 张保森
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