Method for production of sulfuric acid by flue gas desulfurization and for sulfuric acid purification and device thereof

A technology for flue gas and sulfuric acid, applied in the direction of combination device, separation method, chemical instrument and method, can solve the problems of difficult separation, large ozone consumption and electricity consumption, high operating cost, and achieve high oxidation efficiency and oxidation time. Long, block-avoiding effect

Active Publication Date: 2017-05-17
SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEM +1
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology consumes a lot of ozone and electricity, and the operating cost is high,

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 for production of sulfuric acid by flue gas desulfurization and for sulfuric acid purification and device thereof
  • Method for production of sulfuric acid by flue gas desulfurization and for sulfuric acid purification and device thereof
  • Method for production of sulfuric acid by flue gas desulfurization and for sulfuric acid purification and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The flue gas composition of a catalytic cracking catalyst regenerated is shown in Table 1.

[0043] Table 1 Composition of flue gas regenerated from a catalytic cracking catalyst.

[0044]

[0045] Operating conditions of the present invention: (1) The dedusting and quenching tower adopts a turbulent liquid-gas ratio of 7.0L / m 3 ; (2) The deep dust removal unit 4-1 of the desulfurization tower is filled with packing, and the desulfurization unit adopts spray absorption, and the operating liquid-gas ratio of the deep dust removal unit is 3.0L / m 3 , the desulfurization unit first, second and third cycle desulfurization liquid gas ratio is 4.0L / m 3 ; (3) The absorption solution is ferric chloride solution, in which Fe 3+ The mass concentration is 3.0%; (4) The pH of the absorption liquid in the liquid holding tank of the dedusting and quenching tower is 1.0~2.0; (5) There are two absorption liquid regeneration towers, switching operation, and the commercially availabl...

Embodiment 2

[0048] The flue gas composition of adsorbent regeneration in a S zorb unit is shown in Table 2.

[0049] Table 2 Composition of flue gas from adsorbent regeneration in a certain S-zorb device.

[0050]

[0051] The operating conditions of the present invention: (1) The dedusting and quenching tower adopts a Venturi composition gas-liquid mass transfer unit, and the liquid-gas ratio is 3.0L / m 3 ; (2) The deep dust removal unit 4-1 of the desulfurization tower is filled with packing, and the desulfurization unit adopts spray absorption, and the operating liquid-gas ratio of the deep dust removal unit is 3.0L / m 3 , the desulfurization unit's primary, secondary and tertiary cycle desulfurization liquid-gas ratios are all 2.0L / m 3 ; (3) The absorption solution is ferric chloride and H 2 o 2 The mixed solution, where Fe 3+ Mass concentration 3.0%, H 2 o 2 The mass concentration is 1.0%; (4) The pH of the absorption liquid in the liquid holding tank of the dedusting quenchin...

Embodiment 3

[0054] The flue gas composition of a coal-fired boiler is shown in Table 3.

[0055] Table 3 Flue gas composition of a coal-fired boiler.

[0056]

[0057] Operating conditions of the present invention: (1) The dedusting and quenching tower adopts turbulence, and the liquid-gas ratio is 8.0L / m 3; (2) The deep dust removal unit 4-1 of the desulfurization tower is filled with packing, and the desulfurization unit adopts spray absorption, and the operating liquid-gas ratio of the deep dust removal unit is 3.0L / m 3 , the desulfurization unit first, second and third cycle desulfurization liquid gas ratio is 4.0L / m 3 ; (3) The absorption solution is ferric chloride and H 2 o 2 The mixed solution, where Fe 3+ Mass concentration 3.0%, H 2 o 2 The mass concentration is 0.3%; (4) The pH of the absorption liquid in the liquid holding tank of the dedusting and quenching tower is 1.0-2.0; (5) There are two regeneration towers for the absorption liquid, switching operation, and the...

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 method for production of sulfuric acid by flue gas desulfurization and for sulfuric acid purification and a device thereof. The method comprises the following contents: (1) flue gas undergoes heat exchange and then enters a dedusting quench tower for primary dedusting and cooling process; (2) the flue gas enters a desulfurization tower and successively passes through a deep dedusting unit, a desulfurization unit and a washing unit from the bottom to the top; (3) the obtained overflow rich in an absorption liquid successively passes through a desulfurization unit and a deep dedusting unit and then enters a dedusting quench tower for solid-liquid separation, and the residual gas phase is discharged into the atmosphere; and (4) the absorption liquid separated from solid waste enters an absorption liquid regeneration tower, and enters a sulfuric acid storage tank in the form of dilute sulfuric acid after transition metal cations in the absorption liquid are removed through H<+> in resin. By the method and the device, SO2 in the flue gas can be directly converted into sulfuric acid through oxidation, and a sulfuric acid solution with high concentration is prepared by concentration. The purified flue gas can reach the national or local relevant standards. The method and the device are suitable for recovery processing of flue gas containing various concentrations of sulfur dioxide.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to a method and device for producing sulfuric acid from flue gas desulfurization and sulfuric acid purification, and belongs to the technical field of environmental protection. Background technique [0002] Since 2003, my country's SO 2 The total emissions have remained high. In 2014, my country's SO 2 The total emissions were 19.744 million tons, which was below 20 million tons for the first time since 2003. Although the goal of reducing sulfur dioxide by 10% during the "Eleventh Five-Year Plan" period in my country has been achieved, the current acid rain pollution area in China (accounting for 30% of the country's land area) is still expanding, and is changing from "sulfuric acid type" to "sulfuric acid nitric acid compound type" " Transformation. Each year due to acid rain and SO 2 Pollution has caused economic losses of more than 100 billion yuan in crops, f...

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): B01D53/14B01D47/00B01D50/00
CPCB01D47/00B01D53/14B01D2258/0283B01D2257/302B01D2252/00B01D50/60
Inventor 李欣王明星阮宗林王岩姜阳
Owner SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEM
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