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Saponifiable matter extraction method and saponifiable matter extraction device

An extraction method and technology of an extraction device, which is applied to a device for extracting saponified matter, in the field of extracting saponified matter from black liquor, can solve the problems of low separation speed, low extraction rate of saponified matter, and difficulty in achieving ideal residence separation time, etc. problems, to achieve the effect of improving the extraction rate, accelerating the separation and rising speed, and preventing deterioration

Active Publication Date: 2012-08-22
湖南骏泰新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the traditional saponification extraction method is greatly affected by the liquid level of the saponification separation tank during the production process, it is difficult to achieve the ideal state for the residence separation time. In addition, the separation speed of the saponification from the black liquor is low, and the separation effect of the saponification Not ideal, the extraction rate of saponified matter is low

Method used

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  • Saponifiable matter extraction method and saponifiable matter extraction device
  • Saponifiable matter extraction method and saponifiable matter extraction device
  • Saponifiable matter extraction method and saponifiable matter extraction device

Examples

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Embodiment 1

[0022] Example 1: When using the aforementioned saponified matter extraction device to extract saponified matter, the black liquor obtained by pulping and extraction is concentrated to a temperature of 75°C during the evaporation process, and the black liquor with a black liquor solid concentration of 24% is sent to the black liquor tank In 7, in this black liquor, add black liquor amount 0.2wt% sodium dodecylbenzene sulfonate surfactant, also pass to the bottom of black liquor tank 7 from compressed air pipeline 8 and sparger 6 in the separation process of staying Inject compressed air to speed up the separation of saponified matter. After the black liquor stayed in the black liquor tank 7 for 3.5 hours, part of the saponified matter was analyzed and rose to the top of the black liquor tank 7, and passed through the cofferdam 2 from the first saponified matter Outlet 1 flows out, thereby obtaining saponified product.

Embodiment 2

[0023] Example 2: When the aforementioned saponified matter extraction device is used to extract saponified matter, the black liquor obtained by pulping extraction is concentrated to a temperature of 85°C during the evaporation process, and the black liquor with a black liquor solid concentration of 27% is sent to the black liquor tank In 7, in this black liquor, add the polypeptide base surfactant of black liquor amount 0.5wt%, also pass into the bottom of black liquor tank 7 from compressed air pipeline 8 and distributor 6 to the bottom of black liquor tank 7 during the separation process, quicken The separation of saponified matter, after this black liquor stays in black liquor tank 7 for 2.5 hours, part of saponified matter wherein separates day, rises to the top of black liquor tank 7, flows out from first saponified matter outlet 1 through cofferdam 2, thereby Saponification is obtained.

Embodiment 3

[0024] Example 3: When the aforementioned saponified matter extraction device is used to extract saponified matter, the black liquor extracted by pulping is concentrated to a temperature of 84°C during the evaporation process, and the black liquor with a black liquor solid concentration of 27.5% is sent to the black liquor tank In 7, add the alpha-olefin sulfonate sodium surfactant of black liquor amount 0.35wt% in this black liquor, also pass into the bottom of black liquor tank 7 from compressed air pipeline 8 and sparger 6 in the separation process of staying Compress the air to speed up the separation of saponified matter. After the black liquor stays in the black liquor tank 7 for 3 hours, part of the saponified matter will rise to the top of the black liquor tank 7 and exit from the first saponified product through the cofferdam 2. 1 flowed out to obtain a saponified product.

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Abstract

Disclosed are saponifiable matter extraction method and a saponifiable matter extraction device. Saponifiable matters are allowed to stay in a black liquor tank and are extracted from black liquor by separating, and surfactant accounting for 0.2-0.5% of the black liquor by weight or sodium sulfonate accounting for 1%-2% of the black liquor by weight is added in the separating process. The saponifiable matter extraction device comprises the black liquor tank which is provided with at least two saponifiable matter outlets, one saponifiable matter outlet is located at the top of the black liquortank, other saponifiable matter outlets are lower than the first saponifiable matter outlet and provided with openable gates. The speed of separating and rising of the saponifiable matters can be increased, the time of retention and separation of the saponifiable matters can be adjusted according to production conditions, the saponifiable matters are recycled timely, and accordingly deteriorationof the saponifiable matters is prevented, and the extraction rate of the saponifiable matters is increased.

Description

technical field [0001] The invention relates to the technical field of saponification recovery in the process of pulping and papermaking, in particular to a method for extracting saponification from black liquor; the invention also relates to a device for extracting saponification from black liquor. Background technique [0002] In the cork alkali pulping process, the resin acids, fatty acids and unsaponifiable substances released in the form of various saponifiable sodium salts enter the evaporation system after being extracted from black liquor, and their recovery has important economic value. Full recovery is also conducive to the evaporation operation of alkali recovery. [0003] In the traditional method of extracting saponified matter, the dilute pulping black liquor is evaporated and concentrated to a certain concentration, and then left to stand in a semi-concentrated black liquor tank, and the saponified matter is extracted after standing and separating in the black...

Claims

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Application Information

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IPC IPC(8): C09F3/02
Inventor 吴健罗劲松朱远征汤秋南徐应盛黄百文张贺雨党佩
Owner 湖南骏泰新材料科技有限责任公司
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