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Method for recovering waste heat during processing of starchy material

A starchy raw material and waste heat recovery technology, applied in the direction of sustainable manufacturing/processing, chemical industry, sugar production, etc., can solve the problems of unrecoverable heat, waste of heat energy, increased production costs, etc., to reduce subsequent concentration costs, reduce The effect of reducing production cost and energy consumption

Active Publication Date: 2010-06-16
鲁洲生物科技(陕西)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since cooling water is used to cool down after liquefaction, the heat cannot be recovered, resulting in a lot of waste of heat energy and increased production costs

Method used

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  • Method for recovering waste heat during processing of starchy material
  • Method for recovering waste heat during processing of starchy material
  • Method for recovering waste heat during processing of starchy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for recovering waste heat during the processing of starchy raw materials, such as figure 1 As shown, after the cooking and liquefied starchy liquefied liquid is kept in laminar flow, the discharge temperature is in the range of 80-95°C, and the discharge is vacuumed and cooled. At this time, the boiling point of the starchy liquefied liquid in the vacuum tank is 60°C , the secondary steam obtained by vacuuming is exchanged with the starch syrup to be evaporated through the heat exchange device to recover waste heat and condensed water.

[0028] Every production of 1t of starch sugar (dry weight) can save about 10 tons of cooling water at 20°C and about 0.25 tons of steam. Has higher economic benefits.

Embodiment 2

[0030] The method for recovery of waste heat as described in Example 1, the difference is that the discharge temperature is between 95-100°C, the boiling point of the starchy liquefaction liquid in the tank is 65°C, and the secondary steam passes through the heat exchange device and is heated The starchy raw materials are heat exchanged to recover waste heat and condensed water.

[0031] Every production of 1t of starch sugar (dry weight) can save about 14 tons of cooling water at 20°C and about 0.5 tons of steam. Has higher economic benefits.

Embodiment 3

[0033] A special equipment for recovery of waste heat in the process of processing starchy raw materials, such as figure 2 As shown, it is arranged between the laminar flow tank 1 and the saccharification tank 6 of the starch raw material processing equipment, and is located above the saccharification tank 6, including a vacuum tank 2, a heat exchange device 3 and a vacuum pump 4, and the vacuum tank 2 is provided with The feed port, the discharge port and the gas outlet, the feed port of the vacuum tank 2 is connected with the discharge port of the laminar flow tank 1 through a pipeline, the gas outlet of the vacuum tank 2 is connected with the heat exchange device 3, and the heat exchange device 3 is connected with the vacuum pump 4 The discharge port of the vacuum tank 2 is connected with the saccharification tank 6 through a pipeline. A secondary cooling device 5 is arranged between the vacuum tank 2 and the saccharification tank 6, and the secondary cooling device 5 is a...

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Abstract

The invention relates to a method for recovering waste heat during processing of a starchy material, which belongs to the technical field of starchy material saccharification. The method for recovering the waste heat during the processing of the starchy material comprises the following steps: boiling and steaming a liquefied starchy emulsion, discharging after the laminar flow and heat preservation, vacuumizing and cooling the discharging to obtain the cooled starchy emulsion, and then recovering the waste heat and condensate water of the secondary steam obtained by vacuumizing through a heat-exchange device. The invention also provides a device special for the method. The method for recovering the waste heat during the processing of starchy material has the advantages of comprehensively recycling the waste heat in the saccharification process of the starchy material, reducing the demands for the condensate water, meeting the requirement of energy saving and emission reduction of the state, and having remarkable economic and social benefits.

Description

technical field [0001] The invention relates to a method for recovering waste heat during the processing of starchy raw materials, and belongs to the technical field of starchy raw material saccharification. Background technique [0002] In recent years, my country's deep processing of starchy raw materials has achieved rapid development. Taking corn starchy resources as an example, during the "Tenth Five-Year Plan" period, my country's corn consumption increased from 112 million tons in 2000 to 127 million tons in 2005, with an average annual growth rate 2.5%. In 2006, domestic corn consumption (excluding exports) was 134 million tons, an increase of 5.5% over 2005; among them, deep processing consumed 35.89 million tons of corn, accounting for 26.8% of the total consumption, and the proportion showed a steady growth trend. After deep processing, these cornstarch resources are either made into starch sugar, polyol products, or fermented products, all of which need to be liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/14C13K1/06
CPCY02P20/10Y02P20/129Y02P20/59
Inventor 刘玉春赵玉斌王德友牛继星
Owner 鲁洲生物科技(陕西)有限公司
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