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Method for preparing raw material of desulfurizing agent by using waste chlorination molten salt generated in production of TiCl4

A desulfurizer and molten salt technology, applied in the field of processing waste molten salt and Cl-containing wastewater, can solve the problem of low utilization rate of desulfurizer and achieve the effect of reducing pollution

Inactive Publication Date: 2014-02-12
重庆阁林环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its main defect is the low utilization rate of desulfurizer

Method used

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  • Method for preparing raw material of desulfurizing agent by using waste chlorination molten salt generated in production of TiCl4
  • Method for preparing raw material of desulfurizing agent by using waste chlorination molten salt generated in production of TiCl4
  • Method for preparing raw material of desulfurizing agent by using waste chlorination molten salt generated in production of TiCl4

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Such as the process flow of processing waste molten salt figure 1 As shown, in the waste molten salt chloride layer, water accounting for 90.0%-280.0% of the chloride mass is gradually added to form a chloride supersaturated solution, and the thick NaCl solid and chloride saturated solution are separated after filtration; the chloride saturated solution is first Fe in solution 2+ and Fe 3+ Equivalent (get slightly greater than Fe 2+ and Fe 3+ equivalent) of NaOH, to obtain a precipitate and chloride solution, the precipitate is mainly Fe (OH) 2 and Fe(OH) 3 , the wet ferric hydroxide and ferrous hydroxide separated by filtration are then cleaned, precipitated and matured, dried and other processes, and finally α-Fe with desulfurization activity is obtained 2 o 3 ·H 2 O, γ-Fe 2 o 3 ·H 2 O and γ-Fe 2 o 3 Active iron oxide in three forms, then add binder and pore-forming agent according to the proportion, adjust the pH value to make it alkaline, and then form, ...

Embodiment 2

[0025] Such as the process flow of processing waste molten salt figure 2 As shown, water accounting for 90.0%-280.0% of the chloride mass is gradually added to the waste molten salt chloride layer to form a chloride supersaturated solution at a temperature of 40-95°C, and the crude NaCl solid and hot chloride saturated solution are separated after filtration. solution; the chloride saturated solution, first added to the solution with Mn 2+ , Fe 2+ and Fe 3+ Equivalent (get slightly greater than Mn 2+ , Fe 2+ and Fe 3+ equivalent) of NaOH, to obtain a precipitate and chloride solution, the precipitate is mainly Mn (OH) 3 , Fe(OH) 2 and Fe(OH) 3 , the wet manganese hydroxide, ferric hydroxide and ferrous hydroxide separated by filtration are then cleaned, precipitated and matured, dried and other processes, and finally the manganese oxide and α-Fe with desulfurization activity are obtained. 2 o 3 ·H 2 O, γ-Fe 2 o 3 ·H 2 O and γ-Fe 2 o 3 Active iron oxide and mang...

Embodiment 3

[0030] Such as the process flow of processing waste molten salt image 3 As shown, water accounting for 90.0%-280.0% of the chloride mass is gradually added to the waste molten salt chloride layer to form a chloride supersaturated solution at a temperature of 40-95°C, and the crude NaCl solid and hot chloride saturated solution are separated after filtration. solution; the chloride saturated solution, first added to the Fe in the solution 2+ and Fe 3+ Equivalent (get slightly greater than Fe 2+ and Fe 3+ equivalent) of milk of lime to obtain precipitate and chloride solution, the precipitate is mainly Fe(OH) 2 and Fe(OH) 3 , the wet ferric hydroxide and ferrous hydroxide separated by filtration are then cleaned, precipitated and matured, dried and other processes, and finally α-Fe with desulfurization activity is obtained 2 o 3 ·H 2 O, γ-Fe 2 o 3 ·H 2 O and γ-Fe 2 o 3 Active iron oxide in three forms, then add binder and pore-forming agent according to the proporti...

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Abstract

The invention discloses a method for preparing a raw material of a desulfurizing agent by using waste chlorination molten salt generated in production of TiCl4, and relates to a method for treating waste molten salt and wastewater containing Cl<->. The method comprises the following steps: performing water solution treatment on a crushed waste molten salt chloride layer, filtering out dregs, subsequently performing treatment of iron removal, manganese removal, magnesium removal and calcium removal on the obtained water solution of the chloride step by step, so as to respectively obtain solutions of ferric hydroxide, ferrous hydroxide, manganese hydroxide, magnesium hydroxide, CaCO3 and NaCl, treating ferric hydroxide, ferrous hydroxide, manganese hydroxide, magnesium hydroxide and CaCO3, subsequently preparing a series of desulfurizing agents, and taking the NaCl aqueous solution as a modifying agent of a calcium-based desulfurizing agent. Due to the adoption of the method, the problem of environment pollution of waste molten salt and wastewater containing Cl<-> in preparation of TiCl4 by using a molten salt electrolysis method, which plagues people for a long time, is solved, the waste molten salt can be prepared into iron-based, magnesium-based, ferro-manganese-based and calcium-based desulfurizing agents for treating a great deal of industrial wastewater containing NaCl, and recycling utilization of the waste molten salt and the industrial wastewater containing NaCl is achieved.

Description

technical field [0001] The invention relates to a method for treating waste molten salt and containing Cl - Process for waste water, in particular involving a method for the production of TiCl using 4 A method for preparing desulfurizing agent raw materials from the produced chlorinated waste molten salt. Background technique [0002] Preparation of TiCl by Molten Salt Chlorination 4 The biggest advantage is that it can adapt to a wide range of raw materials, and is suitable for processing high-calcium-magnesium-titanium slag and TiO 2 Low-grade titanium slag, excellent product quality, the produced TiCl 4 It accounts for about 40% of the world's titanium industry consumption. After the vanadium-titanium ore in the Panzhihua-Xichang area of ​​my country is treated, the content of calcium and magnesium in the obtained titanium-containing materials is relatively high (MgO+CaO≧5-9%), which is suitable for the production of TiCl by molten salt chlorination 4 . However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/48C21C7/064C21C1/02B09B3/00C02F1/58
CPCY02P10/134
Inventor 曹大力
Owner 重庆阁林环保科技有限公司
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