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Spray drier

A technology of spray dryer and sprayer, which is applied in the field of spray dryer, and can solve the problems that the precision and dispersibility of malt paste cannot meet the new requirements, etc.

Inactive Publication Date: 2011-09-14
HENAN XINGFA FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the improvement of food quality in the food industry and the need to develop a new product, the maltodextrin produced by the existing technology cannot meet the new market demand in terms of density and dispersibility.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] As shown in the figure, the spray dryer includes a gas heater 10, a drying tower 3, a heat distributor 1 and a sprayer 1. The gas heater 10 communicates with the heat distributor 1 at the top of the drying tower 3 through a hot air pipe 11, and the sprayer 2 is installed on The inner upper part of the drying tower 3 is dried. The spray dryer also includes a tube heater 7 , the tube heater 7 communicates with the feed pump 8 through the feed pipe 9 , and the feed pump 8 communicates with the feed port 12 of the drying tower 3 through the feed pipe 6 . The nozzle of the sprayer 3 is a spiral nozzle.

[0019] The specific process steps for preparing maltodextrin are as follows:

[0020] (1) Sizing: Use 45°C hot water to adjust starch milk with a mass percentage concentration of 25%, pH = 3, add α-high temperature amylase, and stir at 0.30Kg / t to make the slurry fluidity in good condition;

[0021] (2) Injection liquefaction: use a low-pressure injector with material and...

Embodiment 2

[0026] The spray dryer used was the same as that used in Example 1.

[0027] The specific process steps for preparing maltodextrin are as follows:

[0028] (1) Sizing: use 55°C hot water to adjust the starch milk with a mass percentage concentration of 40%, pH = 5, add α-high temperature amylase, the amount of enzyme added is 0.40Kg / t, stir to make the slurry flow sex is in good condition;

[0029] (2) Injection liquefaction: adopt a low-pressure injector with material and gas, the material pressure is 0.3mPa, the steam pressure is 0.6mPa, the first injection temperature is 110°C, and the injection time is 12min. After the first injection, maintain 95°C for 90min and control The DE value is 20%, the second injection temperature is 135°C, and the injection time is 5 minutes;

[0030] (3) Microporous refining: After the second injection, cool the liquefied liquid to below 90°C, add activated carbon with a mass percentage of 1% to stir and adsorb for 30 minutes, and filter thro...

Embodiment 3

[0034] The spray dryer used was the same as that used in Example 1.

[0035] The specific process steps for preparing maltodextrin are as follows:

[0036] (1) Sizing: Use 48°C hot water to adjust starch milk with a mass percentage concentration of 30%, pH=4, add α-high temperature amylase, and stir at 0.35Kg / t to make the slurry fluidity in good condition;

[0037] (2) Injection liquefaction: use a low-pressure injector with material and gas, the material pressure is 0.3mPa, the steam pressure is 0.6mPa, the first injection temperature is 107°C, and the injection time is 10min. After the first injection, maintain 95°C for 70min and control The DE value is 18%, the second injection temperature is 135°C, and the injection time is 5 minutes;

[0038] (3) Microporous refinement: After the second injection, cool the liquefied liquid to below 90°C, add activated carbon with a mass percentage of 1% to stir and adsorb for 30 minutes, and filter through a microporous filter to remov...

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Abstract

The invention discloses a spray drier which comprises a gas heater, a dry tower, a heat distributor and a sprayer, wherein the gas heater is communicated with the heat distributor arranged on the top of the dry tower through a hot air pipe; and the sprayer is installed on the top of the inside of the dry tower. The spray drier also comprises a tubular heater, wherein the tubular heater is communicated with a feeding pump through a feeding pipe; and the feeding pump is communicated with the material inlet of the dry tower through the feeding pipe. By using the spray drier, the uneven granularity problem caused by the fact that materials suddenly contact high temperature is avoided; dry quality of a product is good, and the product with an ultra-low density can be produced; and the product has the advantages of good dispersibility, flowability and solubility.

Description

[0001] This application is a divisional application, the filing date of the original application is November 7, 2007, the application number is 200710189930.6, and the invention title is "Preparation Method of Low Density Maltodextrin". technical field [0002] The invention relates to a spray dryer. Background technique [0003] The known maltodextrin is a starch hydrolyzate produced by hydrolysis of starch as raw material after liquefaction with enzyme or acid. Maltodextrin is a kind of nutritional polysaccharide without any taste. It is widely used in various food ingredients due to its mild taste, low sweetness, weak hygroscopicity and good solubility. For example, maltodextrin can be used as filler, humectant, dispersant, film former, etc. [0004] At present, the research on the production method of maltodextrin has been relatively in-depth, and the research hotspots mainly focus on the production of low DE value maltodextrin. For example, patent CN1528910 discloses a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/16C08B30/18
Inventor 安庆堂游汉生肖有余安民冯斌斌
Owner HENAN XINGFA FINE CHEM
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