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White mud/acetylene sludge slurry preparing device and process

A technology of calcium carbide slag and lime mud, applied in chemical instruments and methods, mixers, mixing methods, etc., can solve the problems of small improvement in desulfurization efficiency and gypsum quality, affecting desulfurization equipment and desulfurization effect, and limited impurity separation effect, etc. Achieve the effect of reducing investment cost and operating cost, improving gypsum quality, and improving operation stability

Active Publication Date: 2012-12-12
HANGZHOU TIANLAN ENVIRONMENTAL PROTECTION ENG DESIGN
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The ultrasonic cleaning device of this device washes out the black impurities in calcium carbide slag or white mud through cavitation, but the ultrasonic cleaning device can only be separated by the sedimentation characteristics of the substances in the slurry, and the effect of impurity separation is limited, and there are still impurities in the slurry. Some large particles affect the desulfurization equipment and desulfurization effect
[0006] The above-mentioned patents are only aimed at a certain characteristic of lime mud / calcium carbide slag, and cannot be comprehensively treated according to its characteristics. Its application has certain limitations, and the improvement of desulfurization efficiency and gypsum quality is small

Method used

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  • White mud/acetylene sludge slurry preparing device and process
  • White mud/acetylene sludge slurry preparing device and process
  • White mud/acetylene sludge slurry preparing device and process

Examples

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Embodiment 1

[0050] A paper mill, a 170t / h coal-fired boiler lime mud-gypsum wet flue gas desulfurization project adopts the pulping device and process of the present invention, the power of the ultrasonic cleaning machine is 5.4KW, the frequency is 40KHz, and the volume power of the built-in agitator is 50W / m 3 , the power of the homogenizer is 2.7KW, the speed is 2900rpm, and the volume power of the built-in agitator in the sedimentation separation tank is 20W / m 3 , the pore size of the microporous membrane is 10 μm, the purity of the original lime mud is 89%, and the circulation in the homogenizer is cut 6 times.

[0051] After the treatment of the present invention, the purity of white mud in the slurry C discharged from the second slurry outlet of the settling separation tank is greater than 94%, and the particle size is less than 45 μm. Use the terminal slurry of the pulping process as the desulfurization absorbent, control the pH value of the slurry to 5.2, and the liquid-gas rati...

Embodiment 2

[0053] A chemical company has two 75t / h coal-fired boilers in its own thermal power plant. The calcium carbide slag-gypsum wet flue gas desulfurization project adopts the pulping device and process of the present invention. The power of the ultrasonic cleaning machine is 5.4KW, the frequency is 40KHz, and the volume power of the built-in agitator 40W / m 3 , the power of the homogenizer is 2.7KW, the speed is 2900rpm, and the volume power of the built-in agitator in the sedimentation separation tank is 30W / m 3 , the pore size of the microporous membrane is 8 μm, the purity of the original carbide slag is 80%, and the circulation in the homogenizer is cut 4 times.

[0054] After the treatment of the present invention, the purity of white mud in the slurry C discharged from the second slurry outlet of the settling separation tank is greater than 90%, and the particle size is less than 45 μm. Use the terminal slurry of the pulping process as the desulfurization absorbent, control ...

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Abstract

The invention discloses a white mud / acetylene sludge slurry preparing device and process. The device comprises an ultrasonic washing machine and further comprises a sedimentation separation pot and a homogenizer, wherein the sedimentation separation pot is communicated with the middle part of the ultrasonic washing machine through a pipeline with a pump; a feeding opening of the homogenizer is communicated with the lower part of the ultrasonic washing machine; a discharging opening of the homogenizer is communicated with the upper part of the ultrasonic washing machine; and the sedimentation separation pot and the ultrasonic washing machine are internally provided with agitators. According to the white mud / acetylene sludge slurry preparing device and process, white mud and acetylene sludge are treated and large grains can be circularly cut and crushed; and impurities in the grains are ultrasonically desorbed to improve the specific surface area and the purity of the white mud / acetylene sludge and the utilization rate is improved, so that the desulfuration efficiency and the gypsum quality are improved.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a white mud / carbide slag pulping device and process. Background technique [0002] The main component of white mud is calcium carbonate, which can replace limestone as a desulfurizer. The main component of calcium carbide slag is calcium hydroxide, which has strong alkalinity and can also replace limestone as a desulfurizer. However, white mud / calcium carbide slag are all industrial solid wastes, which not only have large solid particles, uneven particle size distribution, but also high impurity content. [0003] The white mud / calcium carbide slag particles are relatively large, and they are directly applied to wet desulfurization, which will wear out the desulfurization equipment and block the pipeline; the large white mud / carbide slag particles have a small specific surface area, and it takes a long time to dissolve at the same pH value, which affects the desu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/10B01F15/02B01F3/12B01D53/80B01D53/48
Inventor 莫建松刘兴利程常杰吴忠标
Owner HANGZHOU TIANLAN ENVIRONMENTAL PROTECTION ENG DESIGN
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