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Drying coating technology for sodium percarbonate

A sodium percarbonate and process technology, applied in the field of dry coating technology, can solve the problems of sodium percarbonate and dry coating, and achieve the effects of good fluidity, compact surface and high efficiency

Active Publication Date: 2007-03-07
SHANDONG TIANLI DRYING TECH & EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the material used for coating is liquid, it is currently impossible to dry the coating with sodium percarbonate

Method used

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  • Drying coating technology for sodium percarbonate
  • Drying coating technology for sodium percarbonate

Examples

Experimental program
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Effect test

Embodiment

[0022] Embodiment: as can be seen from Fig. 1 and Fig. 2, sodium percarbonate adds the silo on the vibration feeder 3, and material enters the spray fluidized bed drier 4 by the vibration feeder 3 of variable speed regulation, simultaneously in The coating material after the primary mixing tank 9, the secondary mixing tank 8 is mixed with process hot water is atomized through the two-fluid nozzle and sprayed onto the particles in a fluidized state, and the coating material is sprayed on the particles in the fluidized state by means of sodium percarbonate particles and coating material. The heat of the solution itself and the heat of reaction make the coating solution complete coagulation, coating, evaporation and crystallization on the surface of the sodium percarbonate particles, and complete the drying process and cooling process in the spray fluidized bed drier 4. Part of the fine particle material entrained by the exhaust gas in the spray fluidized bed is separated by the b...

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PUM

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Abstract

The invention discloses a specific dressing drying technology of sodium percarbonate, which comprises the following steps: adopting hot air as drying dielectric; utilizing energy and reflecting heat of sodium percarbonate particle and dressing solution bulk to condense on the surface of sodium percarbonate; coating; evaporating; crystallizing; drying; cooling; adopting different fluidization wind temperature and speed for guide coating area and drying area in the drying course; making the operation more stable.

Description

technical field [0001] The present invention relates to a kind of dry coating technique, specifically a kind of technique of utilizing spray fluidized bed to carry out the dry coating of sodium percarbonate. Background technique [0002] Sodium percarbonate is a new multi-purpose oxygen-based bleaching agent, which has the characteristics of bleaching, sterilization, washing, and good water solubility. However, sodium percarbonate is prone to decompose when placed in the air for a long time. If the finished product material of sodium percarbonate is required to have slow release, one or two layers of other materials must be added on the surface of the dried particles (this process is called coating). ), to delay the dilution in the subsequent use of the material, that is, after a period of time, the material on the surface of the particle is diluted, and then the particle material is used. Because the material used for coating is liquid, it is currently impossible to dry th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/04C01B15/10
Inventor 苗帅蒋斌郭文付旭东苗楠
Owner SHANDONG TIANLI DRYING TECH & EQUIP
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