Method and device for improving utilization rate of alkali liquor at alkaline cleaning section of vacuum potassium carbonate desulfurization technique

A technology of vacuum potassium carbonate and desulfurization process, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve the problems of large amount of waste liquid and low utilization rate of NaOH lye, and achieve the effect of saving consumption.

Active Publication Date: 2014-04-02
武汉钢铁有限公司
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a solution for the low utilization rate of NaOH lye in the alkaline washing section of the vacuum potassium carbonate desulfurization process and a large amount of waste liquid A method and device for improving the utilization rate of alkali solution in the alkali washing section of the vacuum potassium carbonate desulfurization process

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
  • Method and device for improving utilization rate of alkali liquor at alkaline cleaning section of vacuum potassium carbonate desulfurization technique
  • Method and device for improving utilization rate of alkali liquor at alkaline cleaning section of vacuum potassium carbonate desulfurization technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 The device for improving the utilization rate of lye in the alkali washing section of the vacuum potassium carbonate desulfurization process includes a NaOH lye tank 1, a spent alkali tank 2 and a pH online monitoring system 3, and the NaOH lye tank is provided with lye Import 1-1, lye outlet 1-2 and waste caustic reflux port 1-3, the lye inlet of described NaOH lye tank is provided with import pipeline, and described import pipeline is divided into two branches, It is respectively used to pass into ammonia distillation waste water and NaOH solution. Flowmeters 4 are arranged on the two branch roads to adjust the flow of ammonia distillation waste water and NaOH solution accordingly. Agitator 5 is provided in the NaOH lye tank. The lye outlet of the NaOH lye tank is connected to the upper part of the sodium hydroxide alkali washing section of the desulfurization tower 6 through a pipeline, and the spent soda tank is provided with a spent soda inlet 2-1 ...

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 method and device for improving utilization rate of alkali liquor at an alkaline cleaning section of vacuum potassium carbonate desulfurization technique. The method comprises the following steps: diluting NaOH solution by replacing industrial new water with ammonia still waste water in a chemical workshop, and storing the diluted NaOH solution in a NaOH alkali liquor tank; conveying NaOH alkali liquor in the NaOH alkali liquor tank to the NaOH alkaline cleaning section at the upper part of a desulfurizing tower for carrying out alkaline cleaning, enabling the alkaline cleaning water to flow back into a waste alkaline tank, then evenly mixing the alkaline cleaning water in the waste alkaline tank with NaOH alkali liquor in the NaOH alkali liquor tank, conveying back to the alkaline cleaning section at the upper part of the desulfurizing tower for recycling, and stopping recycling until the pH value of waste liquor in the waste alkaline tank is lower than 10; conveying the waste liquor in the waste alkaline tank into an ammonia still tower to be used as alkaline instead of NaOH. According to the method and the device, the alkaline liquor at the alkaline cleaning section can be recycled, and the usage efficiency of the alkali liquor can be improved on the premise of guaranteeing the desulfurization effect of the desulfurizing tower.

Description

[0001] technical field [0002] The invention belongs to the field of chemical production, and in particular relates to a method and a device for improving the utilization rate of alkali liquid in the alkali washing section of the vacuum potassium carbonate desulfurization process. Background technique [0003] Vacuum potassium carbonate desulfurization is a widely used wet desulfurization process developed by Anshan Jiao Nai Institute. Because of its high desulfurization efficiency, in addition to Wuhan Iron and Steel Coking Company, there are coking plants in Angang New District (Bayuquan), Baosteel Meishan Coking Plant, Shaogang Coking Plant, Handan Iron and Steel New District and other coking plants in China. Although the vacuum potassium carbonate desulfurization process of each coking plant The operation conditions are not the same, but they all face problems such as high alkali consumption for gas purification and difficult treatment of desulfurization waste liquid. ...

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): B01D53/78B01D53/96B01D53/52
Inventor 王丽娜薛改凤张垒吴高明吴恒喜段爱民付本全刘璞张楠刘尚超
Owner 武汉钢铁有限公司
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