A kind of preparation method of sodium nitrate
A technology of sodium nitrate and nitric acid, which is applied in the preparation of alkali metal nitrates, etc., can solve the problems of low cost and high output, and achieve the effects of reduced investment, significant market competitiveness and economic benefits, and reduced production costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0049] Such as figure 1 As shown, this embodiment adopts the following steps to prepare sodium nitrate:
[0050] (1) The raw material sodium bicarbonate is pulped and washed with industrial water, and the adding amount of industrial water is added according to the mass ratio of raw material sodium bicarbonate to industrial water of 0.58:1. The washing slurry is filtered, and the liquid phase is the washing waste liquid, which can be transported to the carbonization process of preparing soda ash by the ammonia-soda method. Sodium chloride is dissolved as the raw material of the carbonization process; the solid phase is dried to obtain purified sodium bicarbonate.
[0051] (2) A transfer pump is used to add a 44.5% nitric acid solution with a mass fraction of the neutralization reactor, and the stirring device in the neutralization reactor is turned on to continuously stir the reaction liquid in the neutralization reactor.
[0052] After that, the solid phase sodium bicarbonate in ste...
Embodiment 2
[0056] In this example, the following steps were used to prepare sodium nitrate:
[0057] (1) The raw material sodium bicarbonate is pulped and washed with industrial water, and the adding amount of industrial water is added according to the mass ratio of raw material sodium bicarbonate to industrial water of 0.58:1. The washing slurry is filtered, and the liquid phase is the washing waste liquid, which can be transported to the carbonization process of preparing soda ash by the ammonia-soda method. Sodium chloride is dissolved as the raw material of the carbonization process; the solid phase is dried to obtain purified sodium bicarbonate.
[0058] (2) A transfer pump is used to add a 44.5% nitric acid solution with a mass fraction to the neutralization reactor, and the stirring device in the neutralization reactor is turned on to continuously stir the reaction liquid in the neutralization reactor.
[0059] After that, the solid-phase sodium bicarbonate is continuously added to the n...
Embodiment 3
[0064] Sodium nitrate is produced according to the steps in the second embodiment above, but the pH value fine-tuning method in step (3) is slightly different from that in the second embodiment, specifically: (a) first detect whether there is CO in the neutralization reactor 2 Obvious overflow; (b) Without CO 2 In the case of obvious overflow, add nitric acid to the neutralization reactor. The volume of nitric acid added is 0.6% of the volume of nitric acid in the original neutralization reactor, so that the pH of the reaction solution in the neutralization reactor is 5; (c) Continue to add sodium carbonate to the neutralization reactor, during which there will be a small amount of CO 2 The gas is released until the pH value of the reaction solution is 6, and the addition is stopped, indicating that the reaction is over and the reaction end is reached.
[0065] The finished sodium nitrate obtained in this example was measured according to the national standard test method for sodiu...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com