CN102643612B - Saponifiable matter extraction method and saponifiable matter extraction device - Google Patents
Saponifiable matter extraction method and saponifiable matter extraction device Download PDFInfo
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- CN102643612B CN102643612B CN 201210122344 CN201210122344A CN102643612B CN 102643612 B CN102643612 B CN 102643612B CN 201210122344 CN201210122344 CN 201210122344 CN 201210122344 A CN201210122344 A CN 201210122344A CN 102643612 B CN102643612 B CN 102643612B
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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
The present invention relates to the saponified recovery technology of pulping and papermaking processes field, especially relate to the saponified method of extraction from black liquor; The invention still further relates to the saponified a kind of device of extraction from black liquor.
Background technology
In cork alkaline process process, the resinous acid that disengages with various saponified sodium-salt forms, lipid acid and saponifiable matter not enter vapo(u)rization system after black liquid extraction, it has been reclaimed important economic value, it is fully reclaimed, also be conducive to the evaporation operation that alkali reclaims.
Traditional saponified extracting method, the rare black liquor of slurrying, leave standstill through half concentrated black liquid groove behind finite concentration through evaporation concentration, saponifiedly extract after standing separation at the black liquor groove.A kind of tall oil recovery method is disclosed as CN101392148A, be in the alkaline process paper process of raw material with the pine, paper pulp is isolated black liquor of pulp making through washing after the boiling, sending evaporation section to be concentrated into concentration through dehydration by evaporation black liquor is 35～45% half concentrated black liquid, after leaving standstill, the saponified storage tank top that floats in half concentrated black liquid is collected saponified from the top of half concentrated black liquid storage tank.
Because traditional saponified extracting method is subjected to the influence of saponified separator tank liquid level in the production process bigger, stop disengaging time and be difficult to the state that reaches desirable, the saponified speed of separating from black liquor is lower in addition, and saponified separating effect is undesirable, and saponified extraction yield is low.
Summary of the invention
In order to overcome the defective of prior art, on the one hand, one of technical problem to be solved by this invention provides a kind of separation efficiency height, saponified extracting method that extraction yield is high.
In order to solve the problems of the technologies described above, the invention provides a kind of saponified extracting method, its basic technical scheme is: extract saponified the separation from black liquor after stopping in the black liquor groove, adds the tensio-active agent of black liquor weight 0.2wt%～0.5wt% and/or the sodium sulfate of 1wt%～2wt% in sepn process.
Preferably, the saponified time that stops separation in the black liquor groove is 2.5～3.5 hours.
Preferably, the saponified solid concentration that stops black liquor when separating in the black liquor groove is 22%～30%.
Preferably, the saponified temperature that stops black liquor when separating in the black liquor groove is 70～90 ℃.
Further, the saponified stop in the black liquor groove when separating feeds pressurized air at described black liquor trench bottom and accelerates saponified separation.
Preferably, described tensio-active agent is one or more in Sodium dodecylbenzene sulfonate, fatty alcohol polyoxyethylene ether sulfate, secondary alkyl sulfonate, alpha-olefin sodium sulfonate, alpha-sulfo fatty acid methyl ester sodium, aliphatic alcohol polyethenoxy ether carboxylate, tea saponin, the polypeptide based surfactants.
On the other hand, one of technical problem to be solved by this invention provides a kind of can the flexible adaptation production process variation, make saponified separation be in the saponified extraction element of preferred process state.
In order to solve the problems of the technologies described above, the invention provides a kind of saponified extraction element, its basic technical scheme is: this device comprises the black liquor groove, described black liquor groove is provided with at least two saponified outlets, wherein the first saponified outlet is positioned at the top of described black liquor groove, and the installation site of all the other saponified outlets is lower than the described first saponified outlet and all the other saponified outlets are provided with the gate that can open or close.
Further, the black liquor trench bottom of saponified extraction element also has compressed air line and sparger.
Further, the black liquor groove inside of saponified extraction element is provided with the cofferdam identical with described saponified export volume, and described cofferdam is fixed on black liquor groove inwall, and the outlet of described cofferdam is connected with described saponified outlet.
The beneficial effect that the present invention brings: in saponified stop sepn process, add tensio-active agent, can accelerate saponified separation lift velocity; In saponified stop sepn process, add sodium sulfate, reduced saponified solubleness in black liquor, improve saponified extraction yield; Saponified extraction element is provided with at least two saponified outlets that the installation site height is different, can be according to the height of the liquid level in the saponified separation black liquor groove, open the saponified outlet of different heights flexibly, adjust saponified stop disengaging time according to the condition of production, in time reclaim saponified, prevent from causing saponified rottenly because of long time stored, improve saponified extraction yield.
Description of drawings
Below in conjunction with the drawings and specific embodiments content of the present invention is described in further detail:
Fig. 1 is the saponified extraction element master of embodiment of the invention TV structure synoptic diagram;
Fig. 2 is that A-A of Fig. 1 is to structural representation.
Embodiment
As Fig. 1, the saponified extraction element of embodiment shown in Figure 2, this device comprises black liquor groove 7, black liquor groove 7 is provided with two saponified outlets 1 and 3, wherein the first saponified outlet 1 is positioned at the top of black liquor groove 7, the installation site of another saponified outlet 3 is lower than the position of the first saponified outlet 1, and saponified outlet 3 is provided with the gate 4 that can open or close, black liquor groove 7 inside are provided with cofferdam 2 and 5, cofferdam 2 and 5 is fixed on black liquor groove inwall, the outlet in cofferdam 2 is connected with the first saponified outlet 1, the outlet in cofferdam 5 is connected with saponified outlet 3, and the bottom of black liquor groove 7 also has compressed air line 8 and sparger 6.
Embodiment 1: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 75 ℃, black liquor solid concentration is 24% black liquor, be sent in the black liquor groove 7, in this black liquor, add black liquor amount 0.2wt% Sodium dodecylbenzene sulfonate tensio-active agent, also the bottom from compressed air line 8 and sparger 6 to black liquor groove 7 feeds pressurized air in stopping sepn process, accelerate saponified separation, this black liquor stops after 3.5 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rise to the top of black liquor groove 7,2 from first saponified outlet 1 outflow through the cofferdam, thereby obtain saponified.
Embodiment 2: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 85 ℃, black liquor solid concentration is 27% black liquor, be sent in the black liquor groove 7, the polypeptide based surfactants that in this black liquor, adds black liquor amount 0.5wt%, also the bottom from compressed air line 8 and sparger 6 to black liquor groove 7 feeds pressurized air in stopping sepn process, accelerate saponified separation, this black liquor stops after 2.5 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rise to the top of black liquor groove 7,2 from first saponified outlet 1 outflow through the cofferdam, thereby obtain saponified.
Embodiment 3: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 84 ℃, black liquor solid concentration is 27.5% black liquor, be sent in the black liquor groove 7, the alpha-olefin sodium sulfonate tensio-active agent that in this black liquor, adds black liquor amount 0.35wt%, also the bottom from compressed air line 8 and sparger 6 to black liquor groove 7 feeds pressurized air in stopping sepn process, accelerate saponified separation, this black liquor stops after 3 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rise to the top of black liquor groove 7,2 from first saponified outlet 1 outflow through the cofferdam, thereby obtain saponified.
Embodiment 4: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 70 ℃, black liquor solid concentration is 22% black liquor, be sent in the black liquor groove 7, the sodium sulfate that in this black liquor, adds black liquor amount 0.2wt% fatty alcohol polyoxyethylene ether sulfate tensio-active agent and 1wt%, this black liquor stops after 3.2 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rise to the top of black liquor groove 7,5 from saponified outlet 3 outflows through the cofferdam, thereby obtain saponified.
Embodiment 5: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 80 ℃, black liquor solid concentration is 26% black liquor, be sent in the black liquor groove 7, add the sodium sulfate of black liquor amount 2wt% in this black liquor, this black liquor stops after 3.5 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rise to the top of black liquor groove 7,2 from first saponified outlet 1 outflow through the cofferdam, thereby obtain saponified.
Embodiment 6: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 90 ℃, black liquor solid concentration is 30% black liquor, be sent in the black liquor groove 7, the sodium sulfate that in this black liquor, adds black liquor amount 1.5wt%, also the bottom from compressed air line 8 and sparger 6 to black liquor groove 7 feeds pressurized air in stopping sepn process, accelerate saponified separation, this black liquor stops after 2.6 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rise to the top of black liquor groove 7,5 from saponified outlet 3 outflows through the cofferdam, thereby obtain saponified.
Comparative Examples 7: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 65 ℃, black liquor solid concentration is 20% black liquor, be sent in the black liquor groove 7, stop after 2.2 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rises to the top of black liquor groove 7,2 from first saponified outlet 1 outflow through the cofferdam, thereby obtain saponified.
Comparative Examples 8: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 95 ℃, black liquor solid concentration is 32% black liquor, be sent in the black liquor groove 7, stop after 4 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rises to the top of black liquor groove 7,2 from first saponified outlet 1 outflow through the cofferdam, thereby obtain saponified.
Comparative Examples 9: use aforementioned saponified extraction element to extract when saponified, the black liquor that the slurrying extraction obtains is concentrated to temperature in evaporative process be 68 ℃, black liquor solid concentration is 35% black liquor, be sent in the black liquor groove 7, stop after 5 hours in black liquor groove 7, partly-hydrolysed thing is wherein analysed day, rises to the top of black liquor groove 7,2 from first saponified outlet 1 outflow through the cofferdam, thereby obtain saponified.
Through to above embodiment or Comparative Examples test, when producing the Pinus massoniana Lamb sulfate pulping, Tall oil quantity such as following table that the ton slurry reclaims from saponified:
| Embodiment | Embodiment 1 | Embodiment 2 | Embodiment 3 | |
|
Embodiment 6 | Comparative Examples 7 | Comparative Examples 8 | Comparative Examples 9 |
| Ton slurry Tall oil reclaims quantity kg | 31.21 | 32.07 | 32.41 | 30.02 | 31.76 | 31.23 | 19.13 | 26.32 | 25.18 |
Test result shows that also the saponified solid concentration that stops black liquor when separating in the black liquor groove is, can reclaim more Tall oil at 22%～30% o'clock, and concentration reduces or raises, and the yield of Tall oil will reduce; When not adding tensio-active agent or using pressurized air, the saponified time that stops separation in the black liquor groove still can not fully separate when reaching 3.5 hours, if it is fully separated, black liquor need have less liquid-column height when stopping, add tensio-active agent or use pressurized air to be conducive to accelerate saponified separation; Add sodium sulfate and be conducive to improve saponified yield rate.
The tensio-active agent that adds can be in Sodium dodecylbenzene sulfonate, fatty alcohol polyoxyethylene ether sulfate, secondary alkyl sulfonate, alpha-olefin sodium sulfonate, alpha-sulfo fatty acid methyl ester sodium, aliphatic alcohol polyethenoxy ether carboxylate, tea saponin, the polypeptide based surfactants one or more.Can also be quaternized thing, glycerin fatty acid ester etc.
The above is the preferred embodiments of the present invention only, and does not limit the present invention in any way, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. saponified extracting method, is characterized in that: add the tensio-active agent of black liquor weight 0.2wt%～0.5wt% and/or the sodium sulfate of 1wt%～2wt% in sepn process saponified separation from black liquor after stopping in the black liquor groove and extracting; Described black liquor groove is provided with at least two saponified outlets, wherein the first saponified outlet is positioned at the top of described black liquor groove, and the installation site of all the other saponified outlets is lower than the described first saponified outlet and all the other saponified outlets are provided with the gate that can open or close; Described black liquor groove inside is provided with the cofferdam identical with described saponified export volume, and described cofferdam is fixed on black liquor groove inwall, and the outlet of described cofferdam is connected with described saponified outlet
The described saponified time that stops separation in the black liquor groove is 2.5～3.5 hours.
2. saponified extracting method according to claim 1 is characterized in that: the described saponified solid concentration that stops black liquor when separating in the black liquor groove is 22%～30%.
3. saponified extracting method according to claim 1 is characterized in that: the described saponified temperature that stops black liquor when separating in the black liquor groove is 70～90 ℃.
4. saponified extracting method according to claim 1, it is characterized in that: described black liquor trench bottom also has compressed air line and sparger; Described saponified the stop in the black liquor groove when separating feeds pressurized air at described black liquor trench bottom and accelerates saponified separation.
5. saponified extracting method according to claim 1, it is characterized in that: described tensio-active agent is one or more in Sodium dodecylbenzene sulfonate, fatty alcohol polyoxyethylene ether sulfate, secondary alkyl sulfonate, alpha-olefin sodium sulfonate, alpha-sulfo fatty acid methyl ester sodium, aliphatic alcohol polyethenoxy ether carboxylate, tea saponin, the polypeptide based surfactants.
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| CN102852021A (en) * | 2012-09-11 | 2013-01-02 | 长沙理工大学 | Black liquor tank used in saponification product extraction, and saponification product extraction method |
| CN103357194B (en) * | 2013-06-14 | 2016-02-17 | 武汉轻工大学 | The extractant of synchronous production cape jasmine multiple efficacies component and Extraction and isolation method thereof |
| CN106049151B (en) * | 2016-08-22 | 2018-03-20 | 湖南双阳高科化工有限公司 | A kind of device and method from saponified middle separation black liquor |
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| US4879369A (en) * | 1988-01-20 | 1989-11-07 | Westvaco Corporation | Method of removing lignin from tall oil |
| CN1668805A (en) * | 2002-07-23 | 2005-09-14 | 纳尔科公司 | Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
| JP2010516872A (en) * | 2007-01-26 | 2010-05-20 | ナルコ カンパニー | Additives to increase the separation yield of tall oil soap from black liquor |
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2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4879369A (en) * | 1988-01-20 | 1989-11-07 | Westvaco Corporation | Method of removing lignin from tall oil |
| CN1668805A (en) * | 2002-07-23 | 2005-09-14 | 纳尔科公司 | Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
| JP2010516872A (en) * | 2007-01-26 | 2010-05-20 | ナルコ カンパニー | Additives to increase the separation yield of tall oil soap from black liquor |
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Address after: 418005 Huaihua Industrial Park, Hunan, Huaihua Patentee after: Hunan Jun Thai New Materials Technology Co. Ltd. Address before: 418005 Huaihua Industrial Park, Hunan, Huaihua Patentee before: Hu'nan Juntai Pulp Paper Co., Ltd. |