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Cement production device and method

A cement production device and cement technology are applied in the field where flue gas desulfurization is required, which can solve the problems of environmental damage, high energy consumption, difficult treatment, etc., and achieve the effects of improving quality, ensuring high-efficiency operation, and ensuring sufficient saturation.

Active Publication Date: 2017-09-01
ZHONGJING ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The device and method of the present invention can solve the problems of high energy consumption and serious environmental damage in traditional cement production, and can also solve the problems of high production cost and high material transfer and transportation costs of general magnesium sulfate cement, which cannot be promoted on a large scale. application problem
[0009] According to the preferred device and method of the present invention, it can solve the long-term troubles of coal-fired power generation enterprises and iron and steel metallurgical enterprises that the quality of magnesium sulfate produced by magnesium desulfurization technology is not high, the price is low and the economic benefits are small, and waste ash and waste residue ( Steel slag, iron slag, ore slag) are difficult to deal with

Method used

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  • Cement production device and method
  • Cement production device and method
  • Cement production device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0095] figure 1 Is the device schematic diagram of this embodiment. Add industrial tap water to the desulfurizing agent magnesium oxide powder to make desulfurizing agent slurry-magnesium hydroxide slurry, and pump it to the desulfurization tower 1 for absorbing sulfur dioxide in the flue gas in the sulfur dioxide absorption spray area.

[0096] Flue gas from sintering machines in steel mills (sulfur dioxide content is 2000mg / Nm 3 , adjusting the oxygen content to be 18vt%) enters the interior of the desulfurization tower 1 from the bottom of the desulfurization tower 1 . During the rising process of the flue gas, it contacts with the sulfur dioxide absorbing and spraying area 2, and the flue gas is discharged from the top of the desulfurization tower 1. The sulfur dioxide absorbing spray zone 2 sprays desulfurizer slurry to absorb sulfur dioxide in the flue gas.

[0097] Magnesium sulfate-containing absorption product formed by desulfurizer slurry after absorbing sulfur di...

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Abstract

The invention provides an apparatus and a method for producing cement, and specifically provides an apparatus and a method for synchronously producing magnesium sulfate cement in a magnesium oxide method flue gas desulfurization process. The apparatus provided by the invention comprises a flue gas desulfurization device, a first concentration device, a discharge device, a second concentration device, a crystallization device, a centrifuge device, a drying device, a waste ash supply device, a slag material supply device, a mixing device, and the like. With the apparatus and the method provided by the invention, problems of large energy consumption and serious environmental damage of current cement productions can be solved. Also, common magnesium sulfate cement problems of high production cost, high material transportation cost, and impossibility of large-scale market popularization can be solved.

Description

technical field [0001] The invention relates to a cement production and a method, in particular to a device and a method for synchronously producing magnesium sulfate cement in a magnesium oxide flue gas desulfurization process. The device and method of the present invention are especially suitable for fields requiring flue gas desulfurization, such as coal-fired boilers, sintering machines, pellets, and flue gas from rotary kilns. Background technique [0002] The cement industry in the traditional industrial sector has two highs and one destruction phenomenon: high energy consumption, high emissions of pollutants such as carbon dioxide, and serious damage to the ecological environment. The production process of cement has many technological links (such as raw material mining, raw meal preparation, clinker calcination, cement grinding) that need to use conveying equipment, crushing equipment, grinding equipment, calcination equipment, motors, fans, etc., which require a lot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B9/04
Inventor 童裳慧
Owner ZHONGJING ENVIRONMENTAL TECH CO LTD
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