Desulfuration waste liquid treatment process and equipment

A technology for desulfurization waste liquid and treatment process, which is applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the problem of lack of treatment technology and equipment, high treatment cost and high equipment investment. problems, to achieve the effect of short process flow, thorough reaction and short process flow

Inactive Publication Date: 2011-02-23
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC +1
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method equipment investment is high, and needs to consume a large amount of coke oven gas (main component H 2 ) as a reducing gas, the processing cost is high and the operation is complicated, so far there is no precedent for production in our country
[0007] To sum up, in ord

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
  • Desulfuration waste liquid treatment process and equipment
  • Desulfuration waste liquid treatment process and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] See figure 1 , a process for the treatment of gas desulfurization waste liquid by vacuum potassium carbonate method, the process adopts the method of heating and hydrolysis to treat the desulfurization waste liquid, and sends the desulfurization waste liquid into the airtight hydrolysis reactor 3, so that it can be heated at a certain temperature and Under pressure conditions, the cyanide in the desulfurization waste liquid is hydrolyzed into non-toxic or slightly toxic compounds such as formate and ammonia, and the hydrolyzed products are directly sent to the ammonia distillation tower. The hydrolysis reaction temperature is 110°C-230°C; the hydrolysis reaction pressure is 3-10MPa; the hydrolysis reaction time is 10-80min; the alkalinity PH of the desulfurization waste liquid is ≥ 8.5.

[0032] In the hydrolysis...

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 desulfuration waste liquid treatment process, in particular to a desulfuration waste liquid treatment process and equipment thereof. The desulfuration waste liquid is treated by adopting a heating hydrolysis mode in the process, namely the desulfuration waste liquid is conveyed into a closed hydrolysis reactor, cyanide in the desulfuration waste liquid is hydrolyzed into non-toxic or low-toxic compounds such as formate, ammonia and the like at a certain temperature under a certain pressure, and the hydrolyzed products are directly conveyed to an ammonia still. The process has the advantages that: due to primary treatment of the desulfuration waste liquid before evaporating the ammonia, the cyanide content of the desulfuration waste liquid is effectively reduced, and the cyanide content of the ammonia evaporation wastewater after the desulfuration waste liquid is blended is close to the index before the desulfuration waste liquid is not blended; and the wastewater is discharged after biochemical secondary treatment so that the water quality meets the national discharge standard requirement.

Description

technical field [0001] The invention relates to the technical field of desulfurization waste liquid treatment technology, in particular to a desulfurization waste liquid treatment process and equipment thereof. Background technique [0002] Vacuum potassium carbonate desulfurization process is an efficient coke oven gas desulfurization process technology. Compared with other desulfurization methods, it has the advantages of energy saving, high desulfurization and decyanation efficiency, simple process, reliable operation, and low equipment investment, so it has been widely used in the coking industry. [0003] The vacuum potassium carbonate gas desulfurization process belongs to the absorption desulfurization process, and a small amount of waste liquid will be produced during the process, and its main components are K 2 CO 3 、KHCO 3 , KHS, KCN, KCNS, K 2 S 2 o 3 、K 4 [Fe(CN) 6 ], HCN, etc. As we all know, cyanide is a highly toxic substance, which seriously threaten...

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
IPC IPC(8): C02F101/38C02F9/04C02F1/58C02F9/14
Inventor 戴成武陈惠民王英丽吕成于涛张素利李玉秀张爽
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap