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Process method for cooking phloem

A process method and technology of sandalwood skin, applied in the field of processing raw sandalwood skin, can solve the problems of long cooking process time, poor delignification effect, uneven cooking cortex, etc., so as to improve the cooking quality, shorten the cooking time, Soft-touch effect

Active Publication Date: 2013-10-16
CHINA XUAN PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is a layer of husk on the outer layer of the sandalwood bark, which is usually shaken off when cooking and preparing materials, but there are still a large number of husks that enter the cooking pot with the sandalwood bark. The alkali content of the inner sandalwood bark of the shell will be low, which will lead to poor delignification effect of the inner sandalwood bark with the shell, and it is easy to cause the phenomenon that the sandalwood bark cannot be cooked through.
Therefore, when this process is used for steaming processing of sandalwood bark, the initial stage is due to the high concentration of alkali, resulting in severe delignification reaction, which damages the fiber structure, and the strength of sandalwood bark is low, while the upper layer of sandalwood bark is difficult to steam, steam thoroughly, and the cooking cortex is uneven. 1. There are a lot of raw skins. After cooking, the color of the skin is dark and hard to the touch. The whole cooking process takes a long time.

Method used

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  • Process method for cooking phloem
  • Process method for cooking phloem
  • Process method for cooking phloem

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add the cooked sandalwood bark and water that mass ratio is 1:8 in the pot, the amount of caustic soda added for the first time accounts for 10% of the sandalwood bark quality, and after 100 ℃ cooking under normal pressure about 1 hour and 40 minutes, the lower layer of sandalwood bark material is basically detached. The lignin is complete. At this time, open the pot, turn the inner skin of the pot over, turn the upper layer of skin into the lower layer, and turn the lower layer of skin into the upper layer. The amount of alkali added for the second time accounts for 6% of the quality of the sandalwood bark. Cook at 100°C under normal pressure for about 4 Hours and 20 minutes to get the processed sandalwood bark. (sample 1)

Embodiment 2

[0020] Adding old sandalwood and water with a mass ratio of 1:8 in the pot, adding caustic soda for the first time accounted for 12% of the quality of the sandalwood. When the lignin is complete, open the pot at this time, turn the inner skin of the pot over, turn the upper layer of skin into the lower layer, and turn the lower layer of skin into the upper layer. The amount of alkali added for the second time accounts for 7% of the quality of the sandalwood bark. Hours and 20 minutes to get the processed sandalwood bark. (sample 2)

Embodiment 3

[0022] Adding raw sandalwood and water with a mass ratio of 1:8 in the pot, the amount of caustic soda added for the first time accounts for 17% of the quality of the sandalwood. When the lignin is complete, open the pot at this time, turn the inner skin of the pot over, turn the upper layer of skin into the lower layer, and turn the lower layer of skin into the upper layer. The amount of alkali added for the second time accounts for 8% of the quality of the sandalwood bark. Hours and 20 minutes to get the processed sandalwood bark. (sample 3)

[0023] The following table is the hardness comparison of the sandalwood bark that the present invention and prior art obtain respectively:

[0024]

[0025] The following table is the comparison that the quality of the raw bark of the sandalwood bark obtained by the present invention and the prior art accounts for the total sandal bark mass percentage:

[0026]

[0027] Following table is the comparison of the pulp whiteness of...

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Abstract

The invention mainly aims to provide a process method for cooking phloem. The technical scheme is that: the process method for cooking phloem comprises the following step of: cooking phloem, water and alkali together, and is characterized in that: the alkali is added into a cooking liquor in at least two times. According to the treatment method disclosed by the invention, the alkali is gradually added in at least two times in the cooking process of phloem, so that the concentration of the cooking liquor is low, the delignifying reaction condition is mild, the cooked phloem is uniform, the handfeel is soft, the color of the phloem is light, a small amount of raw bark is produced, the cooking quality is improved, the cooking time is shortened, and the cost is lowered compared with those in a treatment method in which the alkali is added at one time. By adopting the method, the phloem can be cooked mildly and effectively and lignin is removed.

Description

technical field [0001] The invention relates to a process method for cooking sandalwood bark, in particular to a processing method for raw material sandalwood bark in the rice paper manufacturing industry. Background technique [0002] The main purpose of steaming sandalwood bark is to remove the lignin in the sandalwood bark and provide raw materials for subsequent papermaking. At present, the sandalwood bark cooking process adopts a one-time alkali cooking method, that is, in the sandalwood bark cooking process, caustic soda is added once to cook the sandalwood bark. [0003] The sandalwood bark is boiled with alkali at one time, that is, the outer shell of the sandalwood bark is shaken off, and the whole bark is tied into a bundle (about 2 cm wide and about 1.5 m long), soaked for 24 hours, and then soaked for 24 hours. The sandalwood bark is put into a cooking pot, and caustic soda is added at one time to cook the sandalwood bark. The binding of sandalwood bark is dete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C3/02
Inventor 罗鸣陈宇平许志宏凤中元童海行
Owner CHINA XUAN PAPER