CN103952942A - Method for closed cycle preparation of plant molding pulp by taking salix cheilophila as raw material - Google Patents
Method for closed cycle preparation of plant molding pulp by taking salix cheilophila as raw material Download PDFInfo
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- CN103952942A CN103952942A CN201410197684.9A CN201410197684A CN103952942A CN 103952942 A CN103952942 A CN 103952942A CN 201410197684 A CN201410197684 A CN 201410197684A CN 103952942 A CN103952942 A CN 103952942A
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Abstract
The invention discloses a method for closed cycle preparation of plant molding pulp by taking salix cheilophila as a raw material, relating to the technical field of planting molding pulping. The method comprises the following procedures: preparing materials, feeding, stewing for the first time, squeezing for the first time, stewing for the second time, squeezing for the second time, grinding into pulp, and keeping warm. The salix cheilophila is taken as a new raw material for pulping, so that not only is effective utilization of resources achieved, but also the utilization value of resources is greatly increased, meanwhile, the raw material source for pulping and papermaking is expanded, serious shortage of a wheat straw pulping material is compensated, and new pulp species are added to pulping and papermaking. The method also has the characteristics that (1) the alkali charge is low and the liquid ratio is small; (2) the pulping evenness is obviously improved, the yield is high, and the coarse pulp yield can be up to 40-50%; (3) the effective stewing time is 2-3 hours, and the production efficiency is high.
Description
Technical field
The present invention relates to plant moulding pulping technique field, particularly relate to a kind of take salix monogolica as raw material closed circulation prepare plant moulding with slurry method.
Background technology
Salix monogolica (formal name used at school: Salix psammophila) calling osier willow, fall horse (hiding name), is desert plant, is also the Plants that only a few can be grown in salt-soda soil.Its sprout is yellow, the linear or wire lanceolar of leaf, and branch is grown thickly and is not afraid of husky pressure, well developed root system, rudiment power is strong, is desert-control tree, its natural enemy is salix monogolica poison moth, is born in small stream limit, river valley wetland, the ground such as the distribution Inner Mongol, Hebei, Shanxi, Shaanxi, Gansu, Qinghai, Sichuan.
In recent years, salix monogolica starts to study as a kind of novel plant moulding raw material.Salix monogolica is the high-quality desert shrub that China checks winds and fixes drifting sand, and has the characteristics such as drought-enduring, cold-resistant, high temperature resistant, resistance to sand buries, weather-proof, easy breeding, fast-growing, and country drops into huge fund for checking winds and fixing drifting sand and plants in a large number salix monogolica.For preventing nature, decay the necessary every 3 years stumps of withered salix monogolica once.The salix monogolica that past stump gets off is burnt mainly as yule logs, causes resource serious waste.Chemical-mechanical pulping technology has the features such as slurry yield is high, equipment investment is low, contaminated wastewater is low, salix monogolica is carried out to high yield chemical mechanical slurry systeming process and inquire into, and is particularly suitable for the national conditions of China.Effective utilization of the desert shrub woodss such as salix monogolica, for China development pulping wood provides certain timber resources, has important strategic importance for the development of China's plant moulding and forestry.
Salix monogolica belongs to leaf wood diffuse porous wood, fiber is shorter, cell membrane is thinner, this can have influence on the chemical-mechanical pulping performance of salix monogolica, reduced the physical strength of salix monogolica high yield pulp, reduced plant shaped article quality, salix monogolica slurry can only be produced low-grade plant shaped article, has limited production and the range of application of the high yield of salix monogolica.Therefore need research and probe to be applicable to the high yield chemical mechanical slurry systeming process of salix monogolica, to improve the machinery pulping performance of salix monogolica, expand high yield pulp range of application, improve the value of salix monogolica.
Summary of the invention
Object of the present invention is just to provide a kind of discarded salix monogolica that makes full use of, and improves the value of salix monogolica, expand pulping raw material source, and the slurry of producing meets the salix monogolica closed circulation preparation method of plant forming requirements.
In order to realize object of the present invention, we are implemented the following technical scheme of employing:
The salix monogolica of take is prepared a method for slurry for plant moulding as raw material closed circulation, comprises procedure for preparation: by salix monogolica section, removal of impurities, dedusting, preimpregnation; Feed process: the salix monogolica section after preimpregnation is sent into cylinder reaction warehouse by single-screw charger; It is characterized in that: also comprise: for the first time cooking process, for the first time squeezing process, for the second time cooking process, for the second time squeezing process, grind to form slurry process and insulation operation, wherein:
Cooking process for the first time: adding concentration through the salix monogolica section of preimpregnation in first order cylinder reaction warehouse is 8% potassium hydroxide cooking liquor, 65 ℃-75 ℃ of temperature, the time is to react under the condition of a hour;
Squeezing process for the first time: through the salix monogolica slurry that cooking process was processed for the first time, after squeezing by first order squeezer, extract black liquor and flow to cooking liquor case by pipeline, the device that carries out being transmitted back to after fluid infusion the interpolation cooking liquor of first order cylinder reaction warehouse recycles, salix monogolica slurry after squeezing, flows to the cylinder reaction warehouse of the second level by conveyance conduit;
Cooking process for the second time: the salix monogolica slurry after the squeezing of first order squeezing process adds by cooking liquor adding set the potassium hydroxide cooking liquor that concentration is 10% in the cylinder reaction warehouse of the second level, in temperature, be 90 ℃-110 ℃, the time is to react under the condition of a hour;
Squeezing process for the second time: through the salix monogolica slurry that cooking process was processed for the second time, after squeezing by second level squeezer, extract black liquor and flow to cooking liquor case by pipeline, the device that carries out being transmitted back to after fluid infusion the interpolation cooking liquor of second level cylinder reaction warehouse recycles, salix monogolica slurry after squeezing, flows to grinder by conveyance conduit and grinds pulping;
Grind to form slurry process: the salix monogolica slurry after the squeezing of second level squeezer, after the potassium hydroxide cooking liquor of interpolation concentration 10% and the hydrogen peroxide cooking liquor that concentration is 3%, grinds pulping;
Insulation operation: through grinding to form the salix monogolica slurry after slurry process grinds, be transported in thermal insulation pool by conveyance conduit, temperature retention time is six hours.
Beneficial effect
The present invention be take salix monogolica as slurrying new raw material, has not only realized effective utilization of resource, has greatly promoted the value of resource, has expanded again the raw material sources of paper-making pulping simultaneously, has made up the wretched insufficiency of ryegrass pulping raw material, for paper-making pulping has increased new slurry kind.The present invention be take salix monogolica and is prepared the method for slurry for plant moulding, 1 as raw material closed circulation) alkali charge is low, and liquor ratio is little; 2) pulping evenness obviously improves, and yield is high, and unscreened yield can reach 40～50%; 3) effective digestion time is 2～3 hours, and production efficiency is high.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention
The specific embodiment
Embodiment:
A kind of take salix monogolica as raw material closed circulation prepare plant moulding with slurry method:
One, procedure for preparation: by salix monogolica section, removal of impurities, dedusting, preimpregnation;
Two, feed process: the salix monogolica section after preimpregnation is sent into cylinder reaction warehouse by single-screw charger;
Three, cooking process for the first time: adding concentration through the salix monogolica section of preimpregnation in first order cylinder reaction warehouse is 8% potassium hydroxide cooking liquor, 75 ℃ of temperature, the time is to react under the condition of a hour;
Four, squeezing process for the first time: through the salix monogolica slurry that cooking process was processed for the first time, after squeezing by first order squeezer, extract black liquor and flow to cooking liquor case by pipeline, carry out fluid infusion, described fluid infusion is that the concentration of the black liquor of extraction is adjusted to required concentration, the device that is transmitted back to the interpolation cooking liquor of first order cylinder reaction warehouse after fluid infusion recycles, and the salix monogolica slurry after squeezing flows to the cylinder reaction warehouse of the second level by conveyance conduit;
Five, cooking process for the second time: the salix monogolica slurry after the squeezing of first order squeezing process adds by cooking liquor adding set the potassium hydroxide cooking liquor that concentration is 10% in the cylinder reaction warehouse of the second level, in temperature, be 95 ℃, the time is to react under the condition of a hour;
Six, squeezing process for the second time: through the salix monogolica slurry that cooking process was processed for the second time, after squeezing by second level squeezer, extract black liquor and flow to cooking liquor case by pipeline, the device that carries out being transmitted back to after fluid infusion the interpolation cooking liquor of second level cylinder reaction warehouse recycles, salix monogolica slurry after squeezing, flows to grinder by conveyance conduit and grinds pulping;
Seven, grind to form slurry process: the salix monogolica slurry after the squeezing of second level squeezer, after the potassium hydroxide cooking liquor of interpolation concentration 10% and the hydrogen peroxide cooking liquor that concentration is 3%, grinds pulping;
Eight, insulation operation: through grinding to form the salix monogolica slurry after slurry process grinds, be transported in thermal insulation pool by conveyance conduit, be incubated the slurry for plant moulding after six hours.
Claims (1)
1. the salix monogolica of take is prepared a method for slurry for plant moulding as raw material closed circulation, comprises procedure for preparation: by salix monogolica section, removal of impurities, dedusting, preimpregnation; Feed process: the salix monogolica section after preimpregnation is sent into cylinder reaction warehouse by single-screw charger; It is characterized in that: also comprise: for the first time cooking process, for the first time squeezing process, for the second time cooking process, for the second time squeezing process, grind to form slurry process and insulation operation, wherein:
Cooking process for the first time: adding concentration through the salix monogolica section of preimpregnation in first order cylinder reaction warehouse is 8% potassium hydroxide cooking liquor, 65 ℃-75 ℃ of temperature, the time is to react under the condition of a hour;
Squeezing process for the first time: through the salix monogolica slurry that cooking process was processed for the first time, after squeezing by first order squeezer, extract black liquor and flow to cooking liquor case by pipeline, the device that carries out being transmitted back to after fluid infusion the interpolation cooking liquor of first order cylinder reaction warehouse recycles, salix monogolica slurry after squeezing, flows to the cylinder reaction warehouse of the second level by conveyance conduit;
Cooking process for the second time: the salix monogolica slurry after the squeezing of first order squeezing process adds by cooking liquor adding set the potassium hydroxide cooking liquor that concentration is 10% in the cylinder reaction warehouse of the second level, in temperature, be 90 ℃-110 ℃, the time is to react under the condition of a hour;
Squeezing process for the second time: through the salix monogolica slurry that cooking process was processed for the second time, after squeezing by second level squeezer, extract black liquor and flow to cooking liquor case by pipeline, the device that carries out being transmitted back to after fluid infusion the interpolation cooking liquor of second level cylinder reaction warehouse recycles, salix monogolica slurry after squeezing, flows to grinder by conveyance conduit and grinds pulping;
Grind to form slurry process: the salix monogolica slurry after the squeezing of second level squeezer, after the potassium hydroxide cooking liquor of interpolation concentration 10% and the hydrogen peroxide cooking liquor that concentration is 3%, grinds pulping;
Insulation operation: through grinding to form the salix monogolica slurry after slurry process grinds, be transported in thermal insulation pool by conveyance conduit, temperature retention time is six hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197684.9A CN103952942B (en) | 2014-05-12 | 2014-05-12 | A kind of method preparing plant molding slurry for raw material closed circulation with Cortex Salicis Cheilophilae |
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| CN201410197684.9A CN103952942B (en) | 2014-05-12 | 2014-05-12 | A kind of method preparing plant molding slurry for raw material closed circulation with Cortex Salicis Cheilophilae |
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| CN103952942A true CN103952942A (en) | 2014-07-30 |
| CN103952942B CN103952942B (en) | 2016-08-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51102102A (en) * | 1974-12-19 | 1976-09-09 | Makumiran Burooderu Ltd | |
| WO2001016423A1 (en) * | 1999-08-30 | 2001-03-08 | North Carolina State University | Pulping process for corn stover and other nonwood fibrous materials |
| CN1329193A (en) * | 2000-06-19 | 2002-01-02 | 榆林造纸厂 | Salix mongolica imonium pulping and paper-making method |
| CN102174760A (en) * | 2011-03-14 | 2011-09-07 | 山东轻工业学院 | Process for preparing pulp by using salix mongolia by chemical mechanical method |
| CN102182094A (en) * | 2011-04-12 | 2011-09-14 | 山东轻工业学院 | Salix mongolica sulfate pulp bleaching process |
-
2014
- 2014-05-12 CN CN201410197684.9A patent/CN103952942B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51102102A (en) * | 1974-12-19 | 1976-09-09 | Makumiran Burooderu Ltd | |
| WO2001016423A1 (en) * | 1999-08-30 | 2001-03-08 | North Carolina State University | Pulping process for corn stover and other nonwood fibrous materials |
| CN1329193A (en) * | 2000-06-19 | 2002-01-02 | 榆林造纸厂 | Salix mongolica imonium pulping and paper-making method |
| CN102174760A (en) * | 2011-03-14 | 2011-09-07 | 山东轻工业学院 | Process for preparing pulp by using salix mongolia by chemical mechanical method |
| CN102182094A (en) * | 2011-04-12 | 2011-09-14 | 山东轻工业学院 | Salix mongolica sulfate pulp bleaching process |
Non-Patent Citations (2)
| Title |
|---|
| 果大彤: "连续蒸煮——沙柳化机浆的系统调试", 《天津造纸》 * |
| 薛玉 等: "预浸渍对沙柳两段P-RC APMP浆料性能的影响", 《中华纸业》 * |
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Effective date of registration: 20200803 Address after: 017000 Wulan Aobao village, Xini Town, Hangjin Banner, Ordos City, Inner Mongolia Autonomous Region Patentee after: ERDOS HENGRUIHUANKE MANUFACTURING Co.,Ltd. Address before: 017000 the Inner Mongolia Autonomous Region city Erdos Hangjinqi town Haichang District 6-2-701 Patentee before: Gao Ping |