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Multi-stage nested absorption-analysis citrate process for purifying SO2 in smoke

A citrate, SO2 technology, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problem of no multi-stage nested absorption - analytical process method, etc., to reduce energy consumption and increase driving force , the effect of reducing energy consumption

Active Publication Date: 2015-11-18
马鞍山艺诚机电有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The methods in the prior art are all single-stage citrate solution absorption processes. At present, no citrate solution is used to absorb SO in flue gas 2 Multilevel Nested Absorption-Analytic Process Method for

Method used

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  • Multi-stage nested absorption-analysis citrate process for purifying SO2 in smoke
  • Multi-stage nested absorption-analysis citrate process for purifying SO2 in smoke
  • Multi-stage nested absorption-analysis citrate process for purifying SO2 in smoke

Examples

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Embodiment 1

[0065] Example 1 ( figure 1 )

[0066] Flue gas flow:

[0067] After dedusting and cooling, the flue gas 01 entering the primary absorber, its y 01 10g / m 3 , F 01 200000m 3 / h (dry basis), enters from the bottom of the primary absorber 101, and in the primary absorber 101 is in countercurrent contact with the primary absorbent 10 sprayed down from the liquid distributor 501 to remove part of SO 2 After that, it is flue gas 02 from the first-stage absorber, its y 02 2g / m 3 The flue gas 02 enters the bottom of the secondary absorber 102 through the partition 001 arranged between the primary absorber 101 and the secondary absorber 102, and sprays down from the liquid distributor 502 in the secondary absorber 102 The secondary absorbent 08 is in countercurrent contact, and part of the SO is removed 2 After that, it is flue gas 03 from the secondary absorber, its y 03 0.5g / m 3 The flue gas 03 enters the bottom of the third-stage absorber 103 through the partition 002 arra...

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Abstract

The invention provides a multi-stage nested absorption-analysis citrate process for purifying SO2 in smoke. The process includes the steps that multi-stage absorption is conducted; solutions are utilized stepwise among stages of absorption devices; circulation nesting use among stages and multi-stage analysis are conducted on partial absorption liquid. The process has the advantages that the utilization efficiency of absorbent is improved; the process medium procedure is clear; all the stages of devices in the process unit are optimally configured; the absorption devices are small in size; the utilization amount of the total absorbent is small, and electricity consumption in transport is low; the analysis driving force is large; process devices are few; the pressure system is consistent, and the process is convenient to operate.

Description

technical field [0001] The invention belongs to flue gas removal of SO 2 The field of the invention relates to a multi-stage nested absorption-desorption process using citrate solution as an absorbent. Background technique [0002] Among the current flue gas desulfurization technologies, the widely used calcium method, magnesium method, ammonia method, and seawater method all belong to the absorption-transfer method that does not regenerate the desulfurizer. Its main features are: all use desulfurizers to absorb SO in the flue gas 2 ; The resulting product is not regenerated, but transferred or discarded. [0003] 1) The desulfurizer of the wet calcium method uses CaCO 3 or CaO, the product is CaSO 4 , the overall response is: [0004] CaO+SO 2 +1 / 2O 2 +2H 2 O→CaSO 4 2H 2 o [0005] 2) The magnesium method uses MgO slurry as a desulfurizer, and the product is MgSO 3 , the overall response is: [0006] MgO+SO 2 → MgSO 3 [0007] 3) The ammonia method is to use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14
Inventor 王先玉沈立嵩刘文胜崔有为
Owner 马鞍山艺诚机电有限公司
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