Plate type multistage flash evaporation desulfurization wastewater treatment and recovery device and method

A technology of desulfurization waste water and recovery device, applied in water/sewage multi-stage treatment, water/sewage treatment, heating water/sewage treatment, etc., can solve problems such as evaporator corrosion and scaling, improve heat transfer coefficient and prolong time , to avoid the effect of corrosion and scaling

Active Publication Date: 2015-03-11
ZHEJIANG UNIV
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main factor restricting the development of thermal evaporation desulfurization wastewater treatment technology is the serious corrosion and scaling in t...

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
  • Plate type multistage flash evaporation desulfurization wastewater treatment and recovery device and method
  • Plate type multistage flash evaporation desulfurization wastewater treatment and recovery device and method
  • Plate type multistage flash evaporation desulfurization wastewater treatment and recovery device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Such as figure 1 , 2 , 3, 4, and 5, the plate-type multi-stage flash desulfurization wastewater treatment device includes a first-stage plate heat exchanger 1, a first-stage booster pump 2, a second-stage plate heat exchanger 3, and a second-stage booster pump Pump 4, first stage fresh water tank 5, n-1th stage plate heat exchanger 6, n-1st stage booster pump 7, second stage fresh water tank 8, nth stage plate heat exchanger 9, nth stage Booster pump 10, n-1st stage fresh water tank 11, plate condenser 12, desulfurization wastewater pretreatment pool 13, booster pump 14, nth stage fresh water tank 15, fresh water pump 16, fresh water pool 17, circulating water pump 18, Concentrate treatment tank 19, nth stage delivery pump 20, three-way valve 21, nth stage flash tank 22, n-1st stage delivery pump 23, n-1st stage flash tank 24, second stage delivery pump 25. The second-stage flash tank 26, the first-stage delivery pump 27, the first-stage flash tank 28, and the boiler ...

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 plate type multistage flash evaporation desulfurization wastewater treatment and recovery device and method. The device mainly comprises plate type heat exchangers, a plate type condenser, a boiler, flash evaporation tanks, fresh water tanks, water pumps and stainless steel pipelines. Pretreated desulfurization wastewater enters the plate type heat exchangers stage by stage, and enters the first-stage flash evaporation tank for flash evaporation after being heated to certain temperature, secondary steam enters the plate type heat exchanger of the next stage to be condensed to release latent heat to preheat the desulfurization wastewater, the concentrated desulfurization wastewater enters the flash evaporation tank of the next stage for flash evaporation, the process is sequentially implemented to the final stage, the secondary steam of the final stage enters the plate type condenser, the condensed fresh water of each stage enters a fresh water pond for recovery, a part of the concentrated desulfurization water is continuously flash-evaporated as circulating liquid, and the other part of the concentrated desulfurization water is treated in a centralized way after entering a concentrate treatment pond. According to the device and the method, the latent heat of the secondary steam can be recovered, the concentration multiple is high, the occupied area is small, the energy consumption is low, and the zero emission of the desulfurization wastewater can be realized.

Description

technical field [0001] The invention relates to a plate-type multi-stage flash desulfurization wastewater treatment and recovery device and a method thereof, belonging to the technical field of desulfurization wastewater treatment. Background technique [0002] SO emissions from coal-fired power plants 2 It will cause serious air pollution, and a desulfurization system must be installed to treat SO 2 Remove. There are many desulfurization technologies in thermal power plants, which can be divided into pre-combustion desulfurization, in-combustion desulfurization and post-combustion desulfurization according to the position of the process in the combustion process. Due to economic factors and unit capacity constraints, the first two desulfurization technologies have not been widely used. Flue gas desulfurization (FGD) is currently the only desulfurization technology in large-scale commercial operation. Among all flue gas desulfurization technologies, limestone-gypsum flue...

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): C02F9/10C02F1/06
CPCC02F1/06C02F2201/002
Inventor 肖刚李明春骆仲泱倪明江高翔岑可法方梦祥周劲松施正伦程乐鸣王勤辉王树荣余春江王涛郑成航
Owner ZHEJIANG UNIV
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