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

A method and device for separation and washing of fly ash acid-dissolved slag settling tank

A washing method and washing device technology, applied in separation methods, settling tanks, precipitation separation, etc., to meet discharge requirements, reduce acid content, and improve separation effects

Active Publication Date: 2011-11-30
CHINA SHENHUA ENERGY CO LTD
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the separation and washing process of acid-dissolved slag after producing alumina by fly ash hydrochloric acid method, there is no such process technology and process equipment at home and abroad at present, and the present invention fills up the blank in this field

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
  • A method and device for separation and washing of fly ash acid-dissolved slag settling tank
  • A method and device for separation and washing of fly ash acid-dissolved slag settling tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] see figure 1 , which shows a preferred embodiment of a fly ash acid slag settling tank separation and washing device of the present invention, including a separation and settling mechanism and a five-stage cycle washing and settling mechanism. In the five-stage circulation washing and settling mechanism, the first washing bottom flow pump 8 of the first washing settling tank 6 and the third washing overflow pump 20 of the third washing settling tank 16 are connected with the entrance of the second washing settling tank 11, and the second washing overflow The second washing dilution pump 14 of launder 12 is also connected with the entrance of the second washing settling tank 11, the second washing bottom flow pump 13 is connected with the entrance of the third washing settling tank 16, and the second washing overflow pump 15 is also connected with the first washing settling tank 6 The entrances are connected.

[0024] The second washing bottom flow pump 13 of the second...

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

No PUM Login to View More

Abstract

The invention relates to a fly ash acid solution residue settling tank separation and washing method and a device, wherein the method comprises the separation settling step of partial overflow cycle and the cyclic washing settling step with two or more steps. The device comprises a separation settling mechanism and a cyclic washing settling mechanism with two or more stages. The invention can significantly improves the separation effect of acid solution residue, well reduce the acid content rate of the attached liquid of the acid solution residue so as to meet the discharge requirement and the settling underflow solid content is higher.

Description

technical field [0001] The invention relates to a method and device for separating and washing acid-dissolved slag of fly ash, in particular to a method and device for separating and washing the acid-dissolved slag of fly ash in a settling tank. Background technique [0002] The extraction of alumina from fly ash is the most important way of comprehensive utilization of fly ash, which can not only treat power plant waste residue, but also bring economic, environmental and social benefits, so it has received widespread attention. At present, the methods of producing alumina from fly ash are mainly concentrated in sintering method (lime sintering method, soda lime sintering method), alkali leaching method (sodium hydroxide solution first dissolves silicon and then extracts aluminum) and acid method (hydrochloric acid method, sulfuric acid method) . Aiming at the separation and washing process of the acid-dissolved slag after producing alumina by the fly ash hydrochloric acid ...

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 Applications(China)
IPC IPC(8): B01D21/02B01D21/01C01F7/02
Inventor 张万德徐清燕杨殿范王永旺南清安董宏陈德
Owner CHINA SHENHUA ENERGY CO LTD