A kind of usage method of blast furnace gas dechlorination agent

A technology for blast furnace gas and dechlorination agent, which is applied in separation methods, chemical instruments and methods, removal of gas pollutants, etc., can solve the problems of high pressure, unsuitable blast furnace gas, large flow rate, etc., and achieves the effect of low price

Active Publication Date: 2017-12-01
HEBEI TIANZHU IRON & STEEL GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because blast furnace gas has a fast flow rate, large flow rate, high pressure, CO 2 These processes and technologies are not suitable for blast furnace gas due to its unique characteristics such as relatively high content of water vapor and furnace dust.

Method used

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  • A kind of usage method of blast furnace gas dechlorination agent

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0017] One), select industrial limestone, commercial sodium carbonate and potassium hydroxide as raw material to prepare dechlorination agent, wherein the particle size of limestone is less than 5mm, and the particle size of sodium carbonate and potassium hydroxide is less than 3mm;

[0018] 2), soak the limestone for industrial use as it is in potassium hydroxide solution for 1h, wherein the concentration of potassium hydroxide solution is 10%, and then place the soaked limestone at a high temperature of 700°C for calcination for 1h;

[0019] Three), the calcined limestone (hereinafter referred to as light-burned limestone) and sodium carbonate are ground to below 20 μm with ordinary ball milling process or other milling processes, and then according to light-burned limestone: sodium carbonate=30:70 (weight percentage) Dosing, and then pre-mixing, the mixing time is 10 minutes, and the mixed powder is continued to be ground by the milling process until the particle size of all...

experiment example 2

[0023] One), select industrial limestone, commercial sodium carbonate and potassium hydroxide as raw material to prepare dechlorination agent, wherein the particle size of limestone is less than 5mm, and the particle size of sodium carbonate and potassium hydroxide is less than 3mm;

[0024] Two), the limestone for industrial use is soaked in potassium hydroxide solution for 1 hour as it is, wherein the concentration of potassium hydroxide solution is 15%, and then the soaked limestone is placed in a high temperature conditional calcining at 700° C. for 1 hour;

[0025] Three), the calcined limestone (hereinafter referred to as light-burned limestone) and sodium carbonate are ground to below 20 μm with ordinary ball milling process or other milling processes, and then according to light-burned limestone: sodium carbonate=30:70 (weight percentage) Dosing, and then pre-mixing, the mixing time is 10 minutes, and the mixed powder is continued to be ground by the milling process unt...

experiment example 3

[0029] One), select industrial limestone, commercial sodium carbonate and potassium hydroxide as raw material to prepare dechlorination agent, wherein the particle size of limestone is less than 5mm, and the particle size of sodium carbonate and potassium hydroxide is less than 3mm;

[0030] 2), soak the limestone for industrial use as it is in potassium hydroxide solution for 1h, wherein the concentration of potassium hydroxide solution is 15%, and then place the soaked limestone at a high temperature of 700°C for calcination for 2h;

[0031] Three), the calcined limestone (hereinafter referred to as light-burned limestone) and sodium carbonate are ground to below 20 μm with ordinary ball milling process or other milling processes, and then according to light-burned limestone: sodium carbonate=30:70 (weight percentage) Dosing, and then pre-mixing, the mixing time is 10 minutes, and the mixed powder is continued to be ground by the milling process until the particle size of all...

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Abstract

The invention provides an application method of a blast-furnace gas antichlor. The antichlor is mainly composed of cheap industrial limestone, commercial sodium carbonate, and potassium hydroxide. The formula and preparation technology of the antichlor are optimized. A disc balling machine is used to produce the antichlor balls. A fixed bed reactor is used to remove the HCl gas. If the HCl in blast-furnace gas reaches 1 ppm after the reactions, the antichlor is disabled. The provided application method of blast-furnace gas antichlor is developed according to the characteristics of a blast furnace iron smelting technology and equipment thereof.

Description

technical field [0001] The invention relates to the technical field of complex components and high-temperature gas purification, in particular to a method for using a blast furnace gas dechlorination agent. Background technique [0002] In blast furnace gas dry dedusting technology, the blast furnace gas is firstly dedusted by gravity, and then enters the bag filter for secondary dedusting. After dedusting, the clean gas enters the turbine of the TRT unit to depressurize and do work, driving the generator to generate electricity. Blast furnace gas dry dedusting purification technology has great advantages over the previous scrubber, venturi tube and double venturi tube wet dedusting, high purification efficiency, greatly reduced water consumption, and more importantly, can TRT The power generation capacity has been greatly increased, the energy recovery and utilization have been increased, and the energy consumption per ton of iron has been reduced. [0003] With the develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81
CPCC10K1/003C10K1/205C10K1/32
Inventor 宋春燕胡桂渊高爱民胡宾生贵永亮张波
Owner HEBEI TIANZHU IRON & STEEL GRP CO LTD
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