Compound ammonium bicarbonate additive and production method thereof

A production method and additive technology, applied in the direction of ammonium carbonate/acid carbonate, etc., can solve the problems of high water content and high price, and achieve the effects of easy storage, increased crystal particles, and improved product stability

Inactive Publication Date: 2009-12-02
JIANGSU HEYOU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the ammonium bicarbonate additive purchased from the market was added to the ammonium bicarbonate crystallization mother liquor, the ammonium bicarbonate crystal particles did not increase significantly, and the water content was still relatively large, and the price was relatively high

Method used

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  • Compound ammonium bicarbonate additive and production method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Ammonia water with a mass concentration of 4%, ammonium dodecylbenzenesulfonate, pentadecylsulfonyl chloride, and Tween-80 were prepared in sequence in the proportion of 45:13:28:3 by weight. Then add ammonia water to the heating reaction kettle, add ammonium dodecylbenzenesulfonate when the temperature reaches 58°C, stir the mixture of the two fully, add pentadecylsulfonyl chloride when the temperature of the reaction kettle reaches 70°C, and stir again After 55 minutes, when the temperature was naturally lowered to 58°C, Tween-80 was added, fully stirred evenly, and the temperature was naturally lowered to room temperature to obtain the finished product.

Embodiment 2

[0015] Example 2: Ammonia water with a mass concentration of 6%, ammonium dodecylbenzenesulfonate, pentadecylsulfonyl chloride, and Tween-80 were prepared in sequence in the proportion of 50:14:30:5 by weight. Then add ammonia water to the heating reactor, add ammonium dodecylbenzenesulfonate when the temperature reaches 61°C, stir the mixture of the two fully, add pentadecylsulfonyl chloride when the temperature of the reactor reaches 76°C, and stir again After 65 minutes, when the temperature was naturally lowered to 60°C, Tween-80 was added, fully stirred evenly, and the temperature was naturally lowered to room temperature to obtain the finished product.

Embodiment 3

[0016] Example 3, ammonia water with a mass concentration of 8%, ammonium dodecylbenzenesulfonate, pentadecylsulfonyl chloride, and Tween-80 were prepared in sequence in the proportion of 55:15:32:6 by weight. Then add ammonia water to the heating reactor, add ammonium dodecylbenzenesulfonate when the temperature reaches 62°C, stir the mixture fully, add pentadecylsulfonyl chloride when the temperature of the reactor reaches 78°C, and stir again After 70 minutes, when the temperature was naturally lowered to 62°C, Tween-80 was added, fully stirred evenly, and the temperature was naturally lowered to room temperature to obtain the finished product.

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Abstract

The invention provides a compound ammonium bicarbonate additive and a production method thereof. The ammonium bicarbonate additive is compounded with the following materials: ammonia with mass concentration of 4 to 8 percent, ammonium dodecylbenzenesulfonate, 1-pentadecanesulfonyl chloride and Tween 80. The weight portion ratio of the compounded materials is 45-55:13-15:28-32:3-6. The compounding method comprises the following steps: preparing materials according to the weight portion ratio; adding the ammonia into a reaction kettle, and adding the ammonium dodecylbenzenesulfonate when the ammonia temperature in the kettle is between 58 and 62 DEG C; stirring the mixture of the two, adding the 1-pentadecanesulfonyl chloride when the temperature in the kettle is between 70 and 78 DEG C, stirring for 60 minutes, and slowly reducing temperature; and adding the Tween 80 when the temperature in the kettle is between 58 and 62 DEG C, evenly stirring, cooling to normal temperature, and obtaining a finished product. The ammonium bicarbonate additive prepared by the invention reduces the moisture content of the ammonium bicarbonate finished product to below 3 percent, improves the nitrogen content to over 17 percent, increases crystalline particles, reduces decomposition loss, is not easy to cake, facilitates the storage and transportation of ammonium bicarbonate, and reduces the production cost of the ammonium bicarbonate.

Description

technical field [0001] The invention relates to the production technology of ammonium bicarbonate additive, in particular to a compound type ammonium bicarbonate additive and a production method thereof. Background technique [0002] Adding a certain amount of a certain ammonium bicarbonate additive to the crystallization mother liquor of ammonium bicarbonate helps to increase the nitrogen content of ammonium bicarbonate, and has the advantages of increasing crystal particles, reducing water content, and preventing agglomeration. Therefore, manufacturers of ammonium bicarbonate attach great importance to the use of ammonium bicarbonate additives in the process. At present, although there are many types of ammonium bicarbonate additives on the market, the applicant, as a long-term user of ammonium bicarbonate additives, deeply feels that the quality of the existing ammonium bicarbonate additives has not achieved the desired effect. After the ammonium bicarbonate additive pur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/26
Inventor 卜启芳花万春周文启
Owner JIANGSU HEYOU CHEM
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