Unlock instant, AI-driven research and patent intelligence for your innovation.

Device and process for preparing carbide slag desulfurization seriflux from recovered ferroselenium

A technology for desulfurization slurry and preparation device, which is applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of low utilization rate of electric energy, large one-time investment, large noise, etc., and achieves low equipment investment and energy consumption. , stable and reliable operation, fine particle size control effect

Active Publication Date: 2012-11-21
ZHEJIANG TIANLAN ENVIRONMENTAL PROTECTION TECH +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this process are: (1) the system consumes a lot of energy, especially the wet ball mill, the equipment is heavy, the one-time investment is large, the noise is large, the power consumption is large, and the utilization rate of electric energy is low; (2) due to the closed loop, if Using this system to prepare calcium carbide slag slurry, almost all impurities (including ferrosilicon) in calcium carbide slag will enter the subsequent desulfurization system, which will affect the stable operation of the entire desulfurization system
[0005] Invention patent ZL200410092434.5, titled "Technical method for producing high-purity gypsum from industrial waste carbide slag slurry", utility model patent ZL200720191816.2, titled "an external oxidized lime / carbide slag-gypsum method desulfurization device", Utility model patent ZL200820141589.7, titled "Using carbide slag for flue gas desulfurization treatment device" discloses the use of carbide slag slurry in the desulfurization process, but there is no process for removing impurities and iron from carbide slag slurry; the application number is 200910235451.2, The patent application titled "A Method and Device for Wet Flue Gas Desulfurization Using Carbide Slag Slurry" discloses that the calcium carbide slag slurry is concentrated and removed, but there is no ferrosilicon removal process, and the cyclone filter used for the removal of impurities The mesh size inside and outside the device is only 50-80 mesh, and the slurry cannot be finely screened; the application number is 200810116928.0, and the patent application named "a wet flue gas desulfurization process using carbide slag as absorbent" has been published Carbide slag is ground and pulped for impurity removal, there is no ferrosilicon removal process, and the investment and energy consumption of grinding and pulping equipment are high, and the impurities are also finely ground during the grinding process, which reduces the subsequent impurity removal effect
At present, there is no preparation device and process for the desulfurization slurry of calcium carbide slag

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and process for preparing carbide slag desulfurization seriflux from recovered ferroselenium

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] A preparation device for calcium carbide slag desulfurization slurry, comprising: weighing feeder 1, slurry water inlet pipe 2, slag flushing tank 3, slurry tank 4, slurry intermediate pump 5, linear vibrating screen 6, intermediate tank 7, Finished product slurry pump 8, slurry iron remover 9, rotary vibrating screen 10, finished product slurry pool 11, weighing feeder 1 is installed above the slag flushing tank 3, and the slag flushing tank 3 is equipped with a slurry water inlet pipe 2, and The slag tank 3 is connected with the slurry tank 4 below, and a stirrer is installed in the slurry tank 4; the lower slurry outlet of the slurry tank 4 is connected to the inlet of the intermediate pump 5, and the outlet of the intermediate pump 5 is connected to the inlet of the linear vibrating screen 6 Connected, the slurry outlet of the linear vibrating screen 6 is connected with the intermediate pool 7 below, and the agitator is installed in the intermediate pool 7; the lower...

Embodiment 1

[0023] Such as figure 1Carbide slag is quantitatively sent to the slag washing tank 3 through the weighing feeder 1, and a certain amount of water is added to the slag washing tank through the slurry water inlet pipe 2 to process the slag, and the slurry flows into the slurry through the fence on the slag tank Pool 4, this process will remove the substances (usually some stones, cloth, etc.) in the calcium carbide slag whose size is larger than the fence size, and the calcium carbide slag slurry in the pulping pool stays for 1 hour and then is pumped into the linear vibrating screen by the slurry intermediate pump 5 6. Sieve to remove the material in the slurry whose size is larger than the size of the screen. The qualified slurry will flow into the intermediate pool 7, and the slurry in the intermediate pool will be sent to the slurry iron remover 9 by the finished slurry pump 8. After iron removal, the slurry enters the rotary vibrator The sieve 10 sieves to remove the mater...

Embodiment 2

[0028] Such as figure 1 , The single-layer screen mesh number of the rotary vibrating sieve is 250 orders, and the others are the same as in Example 1.

[0029] The moisture content of the added calcium carbide slag is 30wt%, the ratio of the amount of pulping water to calcium carbide slag (calculated on a dry basis) is 5:2, the calcium carbide slag slurry in the pulping tank stays for 1 hour, and the system processing capacity is 10t / h. The analysis results of the calcium carbide slag slurry in the finished product slurry pool are: the 250-mesh sieve rate of solid particles in the slurry is ≥ 99 wt%, and the removal rate of ferromagnetic substances is > 90%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention discloses a device for preparing carbide slag desulfurization seriflux which is fit for a carbide slag-gypsum flue gas desulfurization system. The device comprises a weighting feeder, a melted seriflux inlet pipe, a slag rushing groove, a melting seriflux pool, a seriflux intermediate pump, a linear vibrating screen, a middle pool, a finished product seriflux pump, a seriflux de-ironing machine, a rotary vibration screen and a finished product seriflux pool which are connected in turn, wherein the melting seriflux pool, the middle pool and the finished product seriflux pool are all provided with a stirrer. The invention also discloses a process for preparing carbide slag desulfurization seriflux by using the device, which comprises the steps of: weighting, filtering, meltingseriflux, primary screening, and fine screening so as to acquire the carbide slag desulfurization seriflux. The device has the advantages of less investment, low energy consumption, capability of removing impurities in carbide slag, capability of recovering ferro-silicon, good screening effect, fine grain size control, stable and reliable running, and the like. The concentration of the prepared seriflux is 10-30wt%, more than 99wt% of solid grains in the seriflux are screened by using a 200-300 meshes screen, and the ferromagnetic matter removing rate is more than 90%.

Description

technical field [0001] The invention relates to a coal-fired industrial boiler kiln and a coal-fired power plant calcium carbide slag-gypsum flue gas desulfurization technology, in particular to the preparation and process of an absorbent-calcium carbide slag desulfurization slurry in the flue gas desulfurization process. Background technique [0002] Carbide slag is an industrial waste whose main component is Ca(OH) 2 , the content reaches about 85wt%. Carbide slag has the characteristics of large specific surface area, good activity and small particle size, which is very suitable for flue gas desulfurization. Compared with the limestone-gypsum desulfurization technology, the calcium carbide slag-gypsum desulfurization technology can greatly reduce the cost of desulfurization and reduce the burden on enterprises. At the same time, it also provides a new way for the resource utilization of industrial waste carbide slag. [0003] The calcium carbide slag-gypsum desulfurizat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/50
Inventor 吴忠标莫建松盛海强程常杰
Owner ZHEJIANG TIANLAN ENVIRONMENTAL PROTECTION TECH