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Process for removing sulfides from brine

A technology of sulfide and brine, applied in the direction of alkali metal chloride, etc., can solve the problem that sulfide cannot be removed fundamentally, achieve the effect of improving product quality, smooth process process, and ensuring product quality

Inactive Publication Date: 2012-06-27
四川顺城盐品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the above-mentioned prior art that can only remove H in gaseous form. 2 S, but the sulfide in the compound form cannot be removed fundamentally. Even if the chlorine oxidation method and the ferric chloride method are used, the sulfide in the compound state is removed in the cold state, but after heating at high temperature, the reaction is reversible. direction, and the problem of sulfide formation at high temperature

Method used

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  • Process for removing sulfides from brine
  • Process for removing sulfides from brine

Examples

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Effect test

Embodiment 1

[0020] A process for removing sulfides in brine, comprising the following process steps:

[0021] A, stable chlorine dioxide and chlorine dioxide activator are added to the water of different containers respectively and dissolve, wherein the weight ratio of stable chlorine dioxide and water and the weight ratio of chlorine dioxide activator and water are 1: 3;

[0022] B, the stable chlorine dioxide solution in the step A and the chlorine dioxide activator solution are added in the activation tank, fully mixed, then placed for 10 minutes, fully reacted, and the stable chlorine dioxide solution was activated to obtain Activated stabilized chlorine dioxide liquid;

[0023] C. Mix the raw brine with the activated stable chlorine dioxide liquid, and then enter the sedimentation tank to remove gaseous H 2 S and combined H 2 Substance S, the amount of activated stable chlorine dioxide liquid is based on the gaseous H in the brine 2 S and combined H 2 The content of S substance ...

Embodiment 2

[0030] A process for removing sulfides in brine, comprising the following process steps:

[0031] A, stable chlorine dioxide and chlorine dioxide activator are added to the water of different containers respectively and dissolve, wherein the weight ratio of stable chlorine dioxide and water and the weight ratio of chlorine dioxide activator and water are 1: 7;

[0032] B, the stable chlorine dioxide solution in the step A and the chlorine dioxide activator solution are added in the activation tank, fully mixed, then placed for 25 minutes, fully reacted, and the stable chlorine dioxide solution was activated to obtain Activated stabilized chlorine dioxide liquid;

[0033] C. Mix the raw brine with the activated stable chlorine dioxide liquid, and then enter the sedimentation tank to remove gaseous H 2 S and combined H 2 Substance S, the amount of activated stable chlorine dioxide liquid is based on the gaseous H in the brine 2 S and combined H 2 The content of S substance ...

Embodiment 3

[0040] A process for removing sulfides in brine, comprising the following process steps:

[0041] A, stable chlorine dioxide and chlorine dioxide activator are added to the water of different containers respectively and dissolve, wherein the weight ratio of stable chlorine dioxide and water and the weight ratio of chlorine dioxide activator and water are 1: 5;

[0042] B, the stable chlorine dioxide solution in the step A and the chlorine dioxide activator solution are added in the activation tank, fully mixed, then placed for 17.5 minutes, fully reacted, and the stable chlorine dioxide solution was activated to obtain Activated stabilized chlorine dioxide liquid;

[0043] C. Mix the raw brine with the activated stable chlorine dioxide liquid, and then enter the sedimentation tank to remove gaseous H 2 S and combined H 2 Substance S, the amount of activated stable chlorine dioxide liquid is based on the gaseous H in the brine 2 S and combined H 2 The content of S substanc...

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Abstract

The invention provides a process for removing sulfides from brine. According to the method, stable chlorine dioxide activated by a chlorine dioxide activating agent is used for removing gaseous H2S and combined H2S substances from the raw material brine, so that the sulfides can be removed at normal temperature, and the sulfide removal effect can be enhanced at high temperature; the reaction is irreversible, so that reducing substances do not exist during the whole iodine salt production, and the situation that the iodine salt is turned to be red or blue by iodide ions reduced from potassium iodate can be avoided; and the quality of the iodine salt is stable.

Description

technical field [0001] The invention relates to a process for purifying brine, more specifically, the invention relates to a process for removing sulfide in brine. Background technique [0002] At present, the raw material for salt production in Sichuan Weixi Salt Mine—brine is liquid brine transported from the mine (Weixi Salt Mine is a rock salt mine, which is dissolved by water injection after drilling, and pumped from the well to the ground after reaching the concentration) , After precipitation and treatment, impurities are removed, and when it reaches the standard, it is the raw material brine required for salt production. The brine is heated and evaporated with steam to reach the crystallization concentration and then crystallized to obtain the product—salt. At present, vacuum salt production generally adopts four-effect or five-effect evaporation to concentrate brine. The steam is provided by the boiler workshop, and the new steam first enters the evaporation 1 eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D3/08
Inventor 宋淑容郭树明金秀全赵强
Owner 四川顺城盐品股份有限公司
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