Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A secondary treatment method for sodium flue gas desulfurization liquid

A secondary treatment and desulfurization liquid technology, applied in the direction of combustion method, combustion type, lighting and heating equipment, etc., can solve the problems of destruction, ecological environment and drinking water quality pollution, etc., to achieve simple and convenient operation, maintenance stability, process Reasonable effect of process design

Active Publication Date: 2018-12-11
NANTONG SUNSHINE GRAPHITE EQUIP TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current enterprises generally discharge the desulfurized liquid directly into the environment without secondary treatment, which brings great pollution and damage to the ecological environment and drinking water quality.

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 secondary treatment method for sodium flue gas desulfurization liquid
  • A secondary treatment method for sodium flue gas desulfurization liquid
  • A secondary treatment method for sodium flue gas desulfurization liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 Shown, the concrete step flow process of the present invention is as follows:

[0019] a. Send the sodium desulfurization solution and air into the sulfur incinerator for high-temperature incineration, so that the sulfuric acid in the sodium desulfurization solution is rapidly cracked at a high temperature of 1000-1200 ° C to generate SO 2 、H 2 O, N 2 , O 2 , CO 2 , SO 3 And high-temperature furnace gas with a small amount of molten or solid sulfate;

[0020] b. The high-temperature furnace gas is transported to the quencher through pipelines at a high flow rate, and the temperature of the high-temperature furnace gas is instantly reduced to below 70°C by using the structural characteristics of the quencher; the quencher is made of high-strength graphite, and the liquid inlet pipe of the quencher A high-...

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 discloses a secondary treatment method of a flue gas desulfurization liquid treated with a sodium method. The secondary treatment method comprises operation steps as follows: the sodium-method desulfurization liquid is sent into a sulfur burning furnace to be burnt, and produced high-temperature gas and little sulfate are rapidly cooled by a quench cooler; the cooled gas and sulfate are mixed in the quench cooler and then enter a gas-liquid separation tank, a sulfate solution and gas are formed after vapor is condensed, gas obtained after gas-liquid separation is sucked away by a fan, the sulfate solution is treated by a sulfate solution cooler, passes by the quench cooler and returns to the gas-liquid separation tank, and the operation is cycled until the sulfate solution is saturated; the saturated sulfate solution is concentrated and crystalized by a sulfate multi-effect evaporation device or an MVR (mechanical vapor recompression) evaporation device, and waste recycling is realized. The secondary treatment method adopts reasonable process procedure design, has the advantages that the sewage treatment effect is good, the recycling rate is high, the operation is simple and convenient, system operation is stable and blocking is difficult to cause, and can be widely applied to factory treatment of the flue gas desulfurization liquid treated with the sodium method.

Description

technical field [0001] The invention relates to a treatment method, in particular to a secondary treatment method of sodium flue gas desulfurization liquid, and belongs to the technical field of sewage treatment. Background technique [0002] Flue gas desulfurization refers to the removal of sulfur oxides (mainly SO 2 and SO 3 )the process of. At present, there are dozens of flue gas desulfurization technologies, which are mainly divided into three types of desulfurization processes: wet method, semi-dry method and dry method according to whether water is added to the desulfurization process and the dry and wet form of the desulfurization product. Among them, the sodium flue gas desulfurization process is the most widely used wet desulfurization technology, which has the advantages of high desulfurization efficiency and simple operation. It mainly uses alkali metal salt aqueous solution, such as NaOH, Na 2 CO 3 , NaHCO 3 、Na 2 SO 3 The process of absorbing sulfur oxid...

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): F23G7/04B01D1/26
CPCB01D1/26F23G7/04F23G2209/101
Inventor 冯圣君蔡远航
Owner NANTONG SUNSHINE GRAPHITE EQUIP TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com