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Adsorbent and preparation method thereof, chlorine dioxide preparation and preparation method and application of chlorine dioxide preparation

A chlorine dioxide and adsorbent technology, applied in the field of chlorine dioxide preparation, can solve the problems of unsafe, particularly prominent impact, not widely used and mature in the market, and achieve huge social and economic benefits.

Active Publication Date: 2021-03-16
上海朗彤环境科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with foreign countries, the preparation and mechanism research of chlorine dioxide in my country is relatively backward. In addition to the cost and the delay in the establishment of standards, the current market application is not yet extensive and mature.
[0005] Chlorine dioxide is divided into preparations and generators according to the production method. The commercial state is liquid or solid, the production mechanism is binary or one-element reaction, and the application state is liquid or gaseous. Because of its very active chemical properties, it is easy to decompose and disproportionate. Preparations or generators, liquids or solids, binary reactions or one-way reactions, the chlorine dioxide products and stable chlorine dioxide products currently used in the market all have low purity, poor stability, inconvenience, unsafety, and high cost to varying degrees. Problems greatly limit the use of this highly effective and safe disinfectant, especially for commercial and civilian retail investors

Method used

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  • Adsorbent and preparation method thereof, chlorine dioxide preparation and preparation method and application of chlorine dioxide preparation
  • Adsorbent and preparation method thereof, chlorine dioxide preparation and preparation method and application of chlorine dioxide preparation
  • Adsorbent and preparation method thereof, chlorine dioxide preparation and preparation method and application of chlorine dioxide preparation

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preparation example Construction

[0026] The invention provides a kind of preparation method of adsorbent, comprises the following steps:

[0027] mixing the ammonium fluoroborate solution with diatomite, and performing a modification reaction to obtain modified diatomite;

[0028] Mixing the modified diatomite, kaolin and bentonite to obtain a composite carrier;

[0029] The composite carrier is calcined to obtain the adsorbent.

[0030] In the invention, the ammonium fluoroborate solution is mixed with the diatomite, and the modification reaction is carried out to obtain the modified diatomite. In the present invention, the mass concentration of the ammonium fluoroborate solution is preferably 5-8%, more preferably 8%; the pH value of the ammonium fluoroborate solution is preferably 9.5-10.3. In the present invention, sodium hydroxide and / or dilute sulfuric acid are preferably used to adjust the pH value of the ammonium fluoroborate solution. In the present invention, the particle size of the diatomite is...

Embodiment 1

[0044] 1. Preparation of adsorbent:

[0045] 1) Weigh a certain amount of diatomite (100-200 mesh) and place it in a Erlenmeyer flask; 2) Weigh a certain amount of ammonium fluoroborate into a beaker, stir with a glass rod until completely dissolved to obtain a 5wt.% ammonium fluoroborate solution , adjust the pH value of the solution to 9.5-10; 3) According to the ratio of 1:2 (100g diatomaceous earth: 200mL ammonium fluoroborate solution), add the ammonium fluoroborate solution dropwise to the three-necked flask under stirring conditions, at 90 ℃ 4) Weigh a certain amount of kaolin and bentonite (both particle diameters are 100-200 mesh), and mix them according to the mass ratio of 5:1:1 (modified diatomite (soil: kaolin: bentonite) into the reaction kettle, and continue to stir for 3 hours; 5) then dry in a vacuum oven for 2 hours; 6) after drying, roast in a muffle furnace at 500°C for 5 hours to obtain the adsorbent.

[0046] 2. Preparation of chlorine dioxide preparatio...

Embodiment 2

[0050] 1. Preparation of adsorbent:

[0051] 1) Weigh a certain amount of diatomite (100-200 mesh) and place it in a Erlenmeyer flask; 2) Weigh a certain amount of ammonium fluoroborate into a beaker, stir with a glass rod until completely dissolved to obtain 8wt.% ammonium fluoroborate solution, Adjust the pH value of the solution to 9.5-10; 3) According to the ratio of 1:2 (100g diatomaceous earth: 200mL ammonium fluoroborate solution), add the ammonium fluoroborate solution dropwise to the three-necked flask under stirring conditions. 4) Weigh a certain amount of kaolin and bentonite (both with a particle size of 100-200 mesh), and mix them according to the ratio of 5:1:1 (modified diatomite: kaolin) : bentonite) into the reaction kettle, continue to stir for 3h; 5) then dry in a vacuum oven for 2h; 6) after drying, roast in a muffle furnace at 500°C for 5h to obtain the adsorbent.

[0052] 2. Preparation of chlorine dioxide preparation:

[0053] 1) Preparation of stable ...

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Abstract

The invention provides an adsorbent and a preparation method thereof, and a chlorine dioxide preparation and a preparation method and application of the chlorine dioxide preparation, and belongs to the technical field of chlorine dioxide preparation. The preparation method of the adsorbent comprises the following steps: mixing an ammonium fluoborate solution with diatomite, and carrying out a modification reaction to obtain modified diatomite; mixing the modified diatomite, kaolin and bentonite to obtain a composite carrier; and roasting the composite carrier to obtain the adsorbent. After theadsorbent prepared by the invention is used for adsorbing a stable chlorine dioxide solution, the obtained chlorine dioxide preparation can slowly release high-purity chlorine dioxide gas, has the advantage of long-acting stability, is non-toxic and odorless, is convenient to store and transport, does not need to be activated in use, has the advantages of safety and convenience, can be applied tothe fields of disinfection, food preservation or air purification.

Description

technical field [0001] The invention relates to the technical field of chlorine dioxide preparation, in particular to an adsorbent and a preparation method thereof, a chlorine dioxide preparation, a preparation method and an application thereof. Background technique [0002] Chlorine dioxide is the fourth-generation disinfectant, and it is the only high-efficiency disinfectant among internationally recognized chlorine-containing disinfectants. A large number of experiments and on-site sterilization tests at home and abroad have proved that chlorine dioxide can kill almost all microorganisms, including Viruses, fungi, mycobacteria, bacterial propagules, bacterial spores, etc., have the advantages of broad spectrum, high efficiency, fast speed, no residue, and no drug resistance. Since it was discovered in the early 19th century, it has become one of the most widely used disinfection products in the mainstream of the world. The mechanism of action of chlorine dioxide determin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/14B01J20/30B01D53/02A01N25/08A01N59/00A01P1/00
CPCB01J20/14B01D53/02A01N25/08A01N59/00B01D2257/70Y02W10/37
Inventor 杨宇翔徐丹周平丛昊董琦
Owner 上海朗彤环境科技发展有限公司
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