Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of iodine removing agent

A technology for deiodination and silver oxidation, which is used in chemical instruments and methods, separation/purification of carboxylic acid compounds, organic chemistry, etc., and can solve problems such as waste water generation

Active Publication Date: 2013-05-08
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the problem of producing waste water in the preparation method of silver-containing macroporous strong-acid cation exchange resin or silver-containing hydrogen molecular sieve existing in the prior art, providing a kind of preparation of deiodination agent method, the method has the characteristics of no waste water

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of iodine removing agent
  • Preparation method of iodine removing agent
  • Preparation method of iodine removing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 1000 ml and 11.9 g of silver oxide (Ag 2 O) powder, stirred to Ag 2 O powder is evenly dispersed, add hydrogen-type CT145 cation exchange resin equivalent to 100 grams of dry weight, and then seal carbon dioxide gas (CO 2 ) 50 grams, maintain the temperature in the reactor at 30° C. and stir for 8 hours, slowly vent the pressure in the reactor to return to normal pressure, filter to obtain the deiodination agent, and produce 980 milliliters of filtrate. It should be emphasized that the filtration preparation process is not washed with water, and as [Example 2] proves, the water phase generated by filtration can be completely recycled, so there is no need to discharge waste water.

[0026] After testing, the silver content of the deiodination agent is 9.92%, and the iodine content in the effluent acetic acid is 4.6ppb after 4 hours of deiodination effect evaluation. The deiodination effect of the deiodination agent is equivalent to [Comparative Example].

[0027] ...

Embodiment 2

[0029] 980 milliliters of filtrates obtained after separating the deiodination agent in [Example 1] add 20 milliliters of water to make the liquid total amount reach 1000 milliliters and replace 1000 milliliters of water in [Example 1] as 1 cycle water and carry out 1 of the deiodination agent In the second cycle preparation experiment, the filtrate obtained in the first cycle test was also added to 1000 ml as the second cycle water to replace the water in [Example 1], and in this way until the 10th cycle preparation experiment was carried out. Other conditions in the cyclic preparation experiment were the same as in [Example 1]. This example is the result of the 10th cyclic preparation experiment.

[0030] For the convenience of comparison, the important experimental conditions and results are listed in Table 1 and Table 2. Compared with the results of [Example 1], it can be seen that the filtrate produced in the preparation process is circulated for the preparation without a...

Embodiment 3

[0031] [Example 3] to [Example 8]

[0032] Except that the particle diameter of silver oxide, the consumption of silver oxide, the kind of hydrogen type strongly acidic cation exchange resin, the consumption of carbon dioxide, the temperature in the kettle and the reaction time may change, other operations are all the same as [Example 1]. For the convenience of comparison, the important experimental conditions and results are listed in Table 1 and Table 2. As demonstrated in [Example 2], the water phase obtained by filtration in [Example 3] to [Example 8] can also be recycled completely without discharging waste water.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
crystallinityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of an iodine removing agent, and mainly aims to solve the problem of waste water generation in the preparation method of silver-containing strong acidic cation exchange resin or a silver-containing molecular sieve of prior art. According to the invention, hydrogen type strong acidic macroporous cation exchange resin or a hydrogen molecular sieve is dipped into aqueous dispersion of a silver compound for an ion exchange reaction. Specifically silver-containing compound is silver oxide, and carbon dioxide is used in the ion exchange reaction process, with the mole ratio of carbon dioxide and silver oxide greater than 1. The technical method of the invention well solves the above problem, and can be used in the industrial production of iodine removing agents.

Description

technical field [0001] The invention relates to a preparation method of a deiodination agent, in particular to a preparation method of a silver-containing macroporous strong-acid cation exchange resin or a silver-containing molecular sieve. Background technique [0002] Acetic acid is an important chemical raw material in the chemical industry. There are two main types of industrial production of acetic acid, one is the ethylene oxidation route, and the other is the methanol carbonylation route. Because the latter has the advantages of low production cost and methanol can come from non-petroleum routes, the methanol carbonylation route has now become a The main source of acetic acid for industrial use. But methanol carbonylation route needs to adopt iodide such as methyl iodide as catalyzer, and iodine can poison many industrial catalysts (such as the palladium / gold / potassium catalyst in the ethylene oxidation method to produce vinyl acetate process), need to carry out acet...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/18B01J20/32C07C51/47C07C53/08
Inventor 张士福杨运信张丽斌姚喆
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com