CN104448344A - Method for preparing eucommia ulmoides gum and activated carbon by utilizing eucommia ulmoides - Google Patents
Method for preparing eucommia ulmoides gum and activated carbon by utilizing eucommia ulmoides Download PDFInfo
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- CN104448344A CN104448344A CN201410697968.4A CN201410697968A CN104448344A CN 104448344 A CN104448344 A CN 104448344A CN 201410697968 A CN201410697968 A CN 201410697968A CN 104448344 A CN104448344 A CN 104448344A
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Abstract
The invention relates to a method for preparing eucommia ulmoides gum and activated carbon by utilizing eucommia ulmoides. The method comprises the following steps: green leaves, twigs and barks of the eucommia ulmoides are respectively treated in different ways to damage cellular structures, so that structures containing the eucommia ulmoides gum are fully damaged, the eucommia ulmoides gum is exposed outside, extraction is performed, and therefore the receiving rate and the extraction efficiency of the eucommia ulmoides gum are greatly improved; then residues generated in a gum preparing process, abandoned biomass generated in eucommia ulmoides cultivation treated by lye soaking and ultrasonic waves, and eucommia ulmoides liquid are mixed, stacked and treated, effective components for medical use and health care can be retained as many as possible, and finally, carbonizing treatment is performed so as to obtain an activated product. Not only is the biomass generated in the eucommia ulmoides cultivation fully utilized, but also a small number of components in eucommia ulmoides for medical use and health care are retained in the activated carbon which is finally prepared. Compared with activated carbon prepared by a wood material in the prior art, the activated carbon prepared by the method disclosed by the invention has higher porosity, and is more suitable for being applied in the field of food.
Description
Technical field
The present invention relates to the extracting method of plant milk extract in chemical field, specifically a kind of method utilizing the bark of eucommia to prepare gutta-percha and gac.
Background technology
The bark of eucommia is China's rare traditional Chinese medicine, has the cultivation history of more than 2,000 year in China, and its bark has very high pharmaceutical use, belongs to famous and precious tonic herb, and its taste is sweet, warm in nature.Have tonify the liver and kidney, strengthen muscles and bones, recuperating CHONG and REN meridians, solid through antiabortive effect.Can treat the pain in the waist and lower extremities or aching and limp unable that insufficiency of kidney-YANG causes, born of the same parents' tire that deficiency of liver-QI causes is solid, and scrotum is wet the disease such as to itch.Be listed in top grade in Shennong's Herbal.Folium Eucommiae is the raw material making Eucommia Tea, and Eucommia Tea has very high health value.The modern study bark of eucommia has rubbish in purged body, strengthens human body cell substance metabolism, prevents muscle skeleton aging, balanced human's blood pressure, decomposer inner cholesterol, reduces body fat, recovers blood vessel elasticity, diuresis heat-clearing, broad-spectrum antimicrobial, stimulating central nervous system, improves white cell pharmacological action.
Gutta-percha is a kind of natural rubber extracted from the leaf of gutta-percha tree, skin, root, and gutta-percha may be used for exploitation thermoplasticity functional materials, thermoelastic shape memory material, particularly our gutta-percha highly elastic material of developing.It may be used for the exploitation of aviation and industries concerned tire, comply with in the world based on trans glue, the trend of development long lifetime, high strength, safe, energy-conservation " green tire ", a series of significant problems such as perplexing tire intensity in air system and relevant industries, tyre life, tire friction heat release for a long time can be solved, reduce the disaster caused due to plane tyre explosion to greatest extent, for the development of China's national defense industry, aerospace industry provides Novel rubber material.
Gac is a kind of solid carbonaceous of black porous, and main component is carbon, and containing elements such as a small amount of oxygen, hydrogen, sulphur, nitrogen, chlorine.The specific surface area of normal activated carbon is at 500 ~ 1700m
2between/g, having very strong absorption property, is a kind of industrial adsorbents that purposes is extremely wide, in addition, also has decolouring and filtration, absorbs the effects such as various gas and steam.
Summary of the invention
The object of this invention is to provide and a kind ofly from the bark of eucommia, extract gutta-percha and utilize residue to prepare the method for gac, not only improve the extraction process of gutta-percha, make the gutta-percha extracted in yield, have very large lifting, also take full advantage of the resistates in glue process and the waste in cultivating eucommia simultaneously.
For achieving the above object, technical scheme provided by the invention is: a kind of method utilizing the bark of eucommia to prepare gutta-percha and gac, comprises the following steps:
1) choose the green blade of the fresh bark of eucommia and spray clean water clean, then adopt the mode of mechanical expression to process it, collect the squeezing material cake and juice that obtain, for subsequent use;
2) the squeezing material cake obtained in step 1) being dipped into volumetric concentration is 3-5h in the alcohol of 40-50%, and backward its applies ultrasonic wave, hyperacoustic applying mode is: first apply the ultrasonic wave 1min of frequency 350-370KHz to it and stop 0.5min, apply ultrasonic wave 1min that frequency is 100-120KHz again and stop 0.5min, the above-mentioned hyperacoustic applying process that circulates 4-6 time, filtration obtains filter residue and filtrate, for subsequent use;
3) bark choosing the bark of eucommia is crushed to particle diameter and is no more than 50 orders after drying, and by itself and step 2) in filter residue and juice in step 1) evenly obtain mixture according to the ratio mix of weight ratio 2:8:1, for subsequent use;
4) the green blade of the fresh bark of eucommia is plucked from gutta-percha tree, mix with the ratio of weight ratio 3:5 with the mixture after mix in step 3) after being shredded, and be deposited in 36-40h in temperature is 35-40 degree Celsius, relative humidity is 90-95% greenhouse, for subsequent use;
5) by complete mixture and the step 2 of fermenting in step 4)) in filtrate, juice in step 1) mix according to the ratio that weight ratio is 1:3-5:2-3, and add the activity charcoal powder of gross weight 3% wherein, then apply microwave to it and reach 90-95 degree Celsius to make the temperature of mixed solution, keep naturally cooling after this state 0.5-1h, for subsequent use;
6) the mixture benzene after step 5) naturally cooling or toluene are used solvent extraction process extracting in 120-140MPa, temperature under being the condition of 50-70 degree Celsius, benzene is reclaimed or toluene solvant obtains the thick glue of the bark of eucommia after collecting benzene or methylbenzene extraction liquid, again namely thick for bark of eucommia glue ethanolic extraction purifying is obtained gutta-percha product, after solvent extraction process extracting, remaining solid residue filters out post-drying, for subsequent use;
7) get biomass powder discarded in cultivating eucommia and be broken to 20-40 order, and be dipped into that mass concentration is 25-35%, temperature is 3-5h in the sodium hydroxide solution of 50-60 degree Celsius, applying 1min frequency every 14min to it in immersion process is the ultrasonic wave of 400-420KHz, filter after immersion and obtain pressed powder, for subsequent use;
Described discarded biomass are withered bark of eucommia leaf and branch, fallen leaves, the Cortex Eucommiae branch of pruning or leaf;
8) by the pressed powder in step 7) with dry in step 6) after solid residue mix according to the ratio of weight ratio 2-4:1, and use the juice mix obtained in step 1) even, the add-on of juice is the 10-15% of mixture total weight, mix is rear high-temperature sterilization evenly, and to its inoculation edible fungi liquid, inoculum size is 5%, is deposited in fermentation 36h in temperature is 35-40 degree Celsius, relative humidity is 90-95%, oxygen content is 5-7% greenhouse after inoculation, for subsequent use;
9) after waiting to stack fermentation, blast air to indoor, then take out the complete mixture of fermentation, and to join mass concentration according to the ratio that weight ratio is 1:1-1.5 be flood in the phosphoric acid solution of 40-50%, dipping temperature is 70-80 degree Celsius, and dipping time is 1-2h, for subsequent use;
10) activate in mixture complete for dipping feeding activation furnace, during activation, first be warming up to 180-200 degree Celsius, and keep this temperature 3-4h, and then continue to be warming up to 500-540 degree Celsius, and keeping this temperature 1-2h, cooling after washing is to neutral, and crushed after being dried to 200 order i.e. obtained activated carbon product.
In the present invention, withered Cortex Eucommiae branch or fallen leaves can also be added in step 3), withered Cortex Eucommiae branch or fallen leaves need first through clear water washes clean, then ovendry power is broken to 30-50 order, and concentration be 30-40%, temperature is soak 3-5h in the sodium hydroxide solution of 50-60 degree Celsius, between soak period, apply 30s ultrasonic wave every 30min to it, hyperacoustic frequency is 560-580KHz; Filter after immersion obtain powder mincing with tree bark powder, step 2) in filter residue, juice in step 1) be that the ratio mix of 5:2:8:1.5 is even according to weight ratio.
In the present invention, in the steeping process of step 9), applying frequency every 20min to it is the ultrasonic wave 30s of 510-530KHz, until flood complete, in steeping process, applies ultrasonication, can significantly improve void content and the adsorption effect of gac.
Beneficial effect: the present invention has the following advantages:
1) pass through bark of eucommia greenery and spray mechanical expression, its structure of preliminary destruction, and then by alcohol-pickled and ultrasonication, inoculate edible fungus fermented its cellularstructure of further destruction, finally make to destroy completely containing organizing of gutta-percha in it, re-use conventional solvent extraction process like this and carry out extracting when obtaining gutta-percha, not only extraction efficiency is higher, and also improves the yield of gutta-percha;
2) some discarded biomass dipping by lye and ultrasonication of will producing in cultivating eucommia, destroy its cell wall structure, the residue then will produced in itself and glue process again, process is stacked after bark of eucommia juice mix, retain the effective constituent of its medicine and health care as much as possible, finally carrying out carbonizing treatment again obtains activated carbon product, not only make use of the biomass produced in cultivating eucommia fully, and in final obtained gac, also remain with the small part medicine and health care composition of the bark of eucommia, be compared to the gac that existing wood materials is made, void content is higher, be more suitable for being applied to field of food.
Embodiment
Below in conjunction with specific embodiment, the present invention is further elaborated.Solvent extraction process in various embodiments of the present invention obtains the thick glue of the bark of eucommia and purifies with ethanolic extraction the general extraction methods and purification process that are well known to the skilled person.
Embodiment 1
Utilize the bark of eucommia to prepare a method for gutta-percha and gac, comprise the following steps:
1) choose the green blade of the fresh bark of eucommia and spray clean water clean, then adopt the mode of mechanical expression to process it, collect the squeezing material cake and juice that obtain, for subsequent use;
2) the squeezing material cake obtained in step 1) being dipped into volumetric concentration is 5h in the alcohol of 40%, and backward its applies ultrasonic wave, hyperacoustic applying mode is: first apply the ultrasonic wave 1min of frequency 350KHz to it and stop 0.5min, apply ultrasonic wave 1min that frequency is 100KHz again and stop 0.5min, the above-mentioned hyperacoustic applying process that circulates 6 times, filtration obtains filter residue and filtrate, for subsequent use;
3) bark choosing the bark of eucommia is crushed to particle diameter and is no more than 50 orders after drying, and by itself and step 2) in filter residue and juice in step 1) evenly obtain mixture according to the ratio mix of weight ratio 2:8:1, for subsequent use;
4) pluck the green blade of the fresh bark of eucommia from gutta-percha tree, shred and mix with the ratio of weight ratio 3:5 with the mixture after mix in step 3) afterwards, and be deposited in 36h in temperature is 35-40 degree Celsius, relative humidity is 90-95% greenhouse, for subsequent use;
5) by complete mixture and the step 2 of fermenting in step 4)) in filtrate, juice in step 1) mix according to the ratio that weight ratio is 1:3:3, and add the activity charcoal powder of gross weight 3% wherein, then apply microwave to it and reach 90 degrees Celsius to make the temperature of mixed solution, keep naturally cooling after this state 1h, for subsequent use;
6) the mixture benzene after step 5) naturally cooling or toluene are used solvent extraction process extracting in 120MPa, temperature under being the condition of 50 degrees Celsius, benzene is reclaimed or toluene solvant obtains the thick glue of the bark of eucommia after collecting benzene or methylbenzene extraction liquid, again namely thick for bark of eucommia glue ethanolic extraction purifying is obtained gutta-percha product, after solvent extraction process extracting, remaining solid residue filters out post-drying, for subsequent use;
7) get biomass powder discarded in cultivating eucommia and be broken to 20-40 order, and be dipped into that mass concentration is 25%, temperature is 5h in the sodium hydroxide solution of 50 degrees Celsius, applying 1min frequency every 14min to it in immersion process is the ultrasonic wave of 400KHz, filter after immersion and obtain pressed powder, for subsequent use;
Described discarded biomass are withered bark of eucommia leaf and branch, fallen leaves, the Cortex Eucommiae branch of pruning or leaf;
8) by the pressed powder in step 7) with dry in step 6) after solid residue mix according to the ratio of weight ratio 2:1, and use the juice mix obtained in step 1) even, the add-on of juice is 10% of mixture total weight, mix is rear high-temperature sterilization evenly, and to its inoculation edible fungi liquid, inoculum size is 5%, is deposited in fermentation 36h in temperature is 35-40 degree Celsius, relative humidity is 90-95%, oxygen content is 5-7% greenhouse after inoculation, for subsequent use;
9) after waiting to stack fermentation, blast air to indoor, then take out the complete mixture of fermentation, and to join mass concentration according to the ratio that weight ratio is 1:1 be flood in the phosphoric acid solution of 50%, dipping temperature is 80 degrees Celsius, and dipping time is 1h, for subsequent use;
10) activate in mixture complete for dipping feeding activation furnace, during activation, be first warming up to 180 degrees Celsius, and keep this temperature 4h, and then continue to be warming up to 500 degrees Celsius, and keep this temperature 2h, cooling after washing is to neutral, and crushed after being dried to 200 order i.e. obtained activated carbon product.
Embodiment 2
Utilize the bark of eucommia to prepare a method for gutta-percha and gac, comprise the following steps:
1) choose the green blade of the fresh bark of eucommia and spray clean water clean, then adopt the mode of mechanical expression to process it, collect the squeezing material cake and juice that obtain, for subsequent use;
2) the squeezing material cake obtained in step 1) being dipped into volumetric concentration is 3h in the alcohol of 50%, and backward its applies ultrasonic wave, hyperacoustic applying mode is: first apply the ultrasonic wave 1min of frequency 370KHz to it and stop 0.5min, apply ultrasonic wave 1min that frequency is 120KHz again and stop 0.5min, the above-mentioned hyperacoustic applying process that circulates 4 times, filtration obtains filter residue and filtrate, for subsequent use;
3) bark choosing the bark of eucommia is crushed to particle diameter and is no more than 50 orders after drying, and by itself and step 2) in filter residue and juice in step 1) evenly obtain mixture according to the ratio mix of weight ratio 2:8:1, for subsequent use;
4) pluck the green blade of the fresh bark of eucommia from gutta-percha tree, shred and mix with the ratio of weight ratio 3:5 with the mixture after mix in step 3) afterwards, and be deposited in 40h in temperature is 35-40 degree Celsius, relative humidity is 90-95% greenhouse, for subsequent use;
5) by complete mixture and the step 2 of fermenting in step 4)) in filtrate, juice in step 1) mix according to the ratio that weight ratio is 1:5:2, and add the activity charcoal powder of gross weight 3% wherein, then apply microwave to it and reach 95 degrees Celsius to make the temperature of mixed solution, keep naturally cooling after this state 0.5h, for subsequent use;
6) the mixture benzene after step 5) naturally cooling or toluene are used solvent extraction process extracting in 140MPa, temperature under being the condition of 70 degrees Celsius, benzene is reclaimed or toluene solvant obtains the thick glue of the bark of eucommia after collecting benzene or methylbenzene extraction liquid, again namely thick for bark of eucommia glue ethanolic extraction purifying is obtained gutta-percha product, after solvent extraction process extracting, remaining solid residue filters out post-drying, for subsequent use;
7) get biomass powder discarded in cultivating eucommia and be broken to 20-40 order, and be dipped into that mass concentration is 35%, temperature is 3h in the sodium hydroxide solution of 60 degrees Celsius, applying 1min frequency every 14min to it in immersion process is the ultrasonic wave of 420KHz, filter after immersion and obtain pressed powder, for subsequent use;
Described discarded biomass are withered bark of eucommia leaf and branch, fallen leaves, the Cortex Eucommiae branch of pruning or leaf;
8) by the pressed powder in step 7) with dry in step 6) after solid residue mix according to the ratio of weight ratio 4:1, and use the juice mix obtained in step 1) even, the add-on of juice is 15% of mixture total weight, mix is rear high-temperature sterilization evenly, and to its inoculation edible fungi liquid, inoculum size is 5%, is deposited in fermentation 36h in temperature is 35-40 degree Celsius, relative humidity is 90-95%, oxygen content is 5-7% greenhouse after inoculation, for subsequent use;
9) after waiting to stack fermentation, blast air to indoor, then take out the complete mixture of fermentation, and to join mass concentration according to the ratio that weight ratio is 1:1.5 be flood in the phosphoric acid solution of 40%, dipping temperature is 70 degrees Celsius, and dipping time is 2h, for subsequent use;
10) activate in mixture complete for dipping feeding activation furnace, during activation, be first warming up to 200 degrees Celsius, and keep this temperature 3h, and then continue to be warming up to 540 degrees Celsius, and keep this temperature 1h, cooling after washing is to neutral, and crushed after being dried to 200 order i.e. obtained activated carbon product.
Embodiment 3
Utilize the bark of eucommia to prepare a method for gutta-percha and gac, comprise the following steps:
1) choose the green blade of the fresh bark of eucommia and spray clean water clean, then adopt the mode of mechanical expression to process it, collect the squeezing material cake and juice that obtain, for subsequent use;
2) the squeezing material cake obtained in step 1) being dipped into volumetric concentration is 4h in the alcohol of 45%, and backward its applies ultrasonic wave, hyperacoustic applying mode is: first apply the ultrasonic wave 1min of frequency 360KHz to it and stop 0.5min, apply ultrasonic wave 1min that frequency is 110KHz again and stop 0.5min, the above-mentioned hyperacoustic applying process that circulates 5 times, filtration obtains filter residue and filtrate, for subsequent use;
3) bark choosing the bark of eucommia is crushed to particle diameter and is no more than 50 orders after drying, and by itself and step 2) in filter residue and juice in step 1) evenly obtain mixture according to the ratio mix of weight ratio 2:8:1, for subsequent use;
4) pluck the green blade of the fresh bark of eucommia from gutta-percha tree, shred and mix with the ratio of weight ratio 3:5 with the mixture after mix in step 3) afterwards, and be deposited in 38h in temperature is 35-40 degree Celsius, relative humidity is 90-95% greenhouse, for subsequent use;
5) by complete mixture and the step 2 of fermenting in step 4)) in filtrate, juice in step 1) mix according to the ratio that weight ratio is 1:4:2.5, and add the activity charcoal powder of gross weight 3% wherein, then apply microwave to it and reach 93 degrees Celsius to make the temperature of mixed solution, keep naturally cooling after this state 45min, for subsequent use;
6) the mixture benzene after step 5) naturally cooling or toluene are used solvent extraction process extracting in 130MPa, temperature under being the condition of 60 degrees Celsius, benzene is reclaimed or toluene solvant obtains the thick glue of the bark of eucommia after collecting benzene or methylbenzene extraction liquid, again namely thick for bark of eucommia glue ethanolic extraction purifying is obtained gutta-percha product, after solvent extraction process extracting, remaining solid residue filters out post-drying, for subsequent use;
7) get biomass powder discarded in cultivating eucommia and be broken to 20-40 order, and be dipped into that mass concentration is 30%, temperature is 4h in the sodium hydroxide solution of 55 degrees Celsius, applying 1min frequency every 14min to it in immersion process is the ultrasonic wave of 410KHz, filter after immersion and obtain pressed powder, for subsequent use;
Described discarded biomass are withered bark of eucommia leaf and branch, fallen leaves, the Cortex Eucommiae branch of pruning or leaf;
8) by the pressed powder in step 7) with dry in step 6) after solid residue mix according to the ratio of weight ratio 3:1, and use the juice mix obtained in step 1) even, the add-on of juice is 12.5% of mixture total weight, mix is rear high-temperature sterilization evenly, and to its inoculation edible fungi liquid, inoculum size is 5%, is deposited in fermentation 36h in temperature is 35-40 degree Celsius, relative humidity is 90-95%, oxygen content is 5-7% greenhouse after inoculation, for subsequent use;
9) after waiting to stack fermentation, blast air to indoor, then take out the complete mixture of fermentation, and to join mass concentration according to the ratio that weight ratio is 1:1.25 be flood in the phosphoric acid solution of 45%, dipping temperature is 75 degrees Celsius, and dipping time is 1.5h, for subsequent use;
10) activate in mixture complete for dipping feeding activation furnace, during activation, first be warming up to 190 degrees Celsius, and keep this temperature 3.5h, and then continue to be warming up to 520 degrees Celsius, and keeping this temperature 1.5h, cooling after washing is to neutral, and crushed after being dried to 200 order i.e. obtained activated carbon product.
Claims (1)
1. utilize the bark of eucommia to prepare a method for gutta-percha and gac, it is characterized in that, comprise the following steps:
1) choose the green blade of the fresh bark of eucommia and spray clean water clean, then adopt the mode of mechanical expression to process it, collect the squeezing material cake and juice that obtain, for subsequent use;
2) the squeezing material cake obtained in step 1) being dipped into volumetric concentration is 3-5h in the alcohol of 40-50%, and backward its applies ultrasonic wave, hyperacoustic applying mode is: first apply the ultrasonic wave 1min of frequency 350-370KHz to it and stop 0.5min, apply ultrasonic wave 1min that frequency is 100-120KHz again and stop 0.5min, the above-mentioned hyperacoustic applying process that circulates 4-6 time, filtration obtains filter residue and filtrate, for subsequent use;
3) bark choosing the bark of eucommia is crushed to particle diameter and is no more than 50 orders after drying, and by itself and step 2) in filter residue and juice in step 1) evenly obtain mixture according to the ratio mix of weight ratio 2:8:1, for subsequent use;
4) the green blade of the fresh bark of eucommia is plucked from gutta-percha tree, mix with the ratio of weight ratio 3:5 with the mixture after mix in step 3) after being shredded, and be deposited in 36-40h in temperature is 35-40 degree Celsius, relative humidity is 90-95% greenhouse, for subsequent use;
5) by complete mixture and the step 2 of fermenting in step 4)) in filtrate, juice in step 1) mix according to the ratio that weight ratio is 1:3-5:2-3, and add the activity charcoal powder of gross weight 3% wherein, then apply microwave to it and reach 90-95 degree Celsius to make the temperature of mixed solution, keep naturally cooling after this state 0.5-1h, for subsequent use;
6) the mixture benzene after step 5) naturally cooling or toluene are used solvent extraction process extracting in 120-140MPa, temperature under being the condition of 50-70 degree Celsius, benzene is reclaimed or toluene solvant obtains the thick glue of the bark of eucommia after collecting benzene or methylbenzene extraction liquid, again namely thick for bark of eucommia glue ethanolic extraction purifying is obtained gutta-percha product, after solvent extraction process extracting, remaining solid residue filters out post-drying, for subsequent use;
7) get biomass powder discarded in cultivating eucommia and be broken to 20-40 order, and be dipped into that mass concentration is 25-35%, temperature is 3-5h in the sodium hydroxide solution of 50-60 degree Celsius, applying 1min frequency every 14min to it in immersion process is the ultrasonic wave of 400-420KHz, filter after immersion and obtain pressed powder, for subsequent use;
Described discarded biomass are withered bark of eucommia leaf and branch, fallen leaves, the Cortex Eucommiae branch of pruning or leaf;
8) by the pressed powder in step 7) with dry in step 6) after solid residue mix according to the ratio of weight ratio 2-4:1, and use the juice mix obtained in step 1) even, the add-on of juice is the 10-15% of mixture total weight, mix is rear high-temperature sterilization evenly, and to its inoculation edible fungi liquid, inoculum size is 5%, is deposited in fermentation 36h in temperature is 35-40 degree Celsius, relative humidity is 90-95%, oxygen content is 5-7% greenhouse after inoculation, for subsequent use;
9) after waiting to stack fermentation, blast air to indoor, then take out the complete mixture of fermentation, and to join mass concentration according to the ratio that weight ratio is 1:1-1.5 be flood in the phosphoric acid solution of 40-50%, dipping temperature is 70-80 degree Celsius, and dipping time is 1-2h, for subsequent use;
10) activate in mixture complete for dipping feeding activation furnace, during activation, first be warming up to 180-200 degree Celsius, and keep this temperature 3-4h, and then continue to be warming up to 500-540 degree Celsius, and keeping this temperature 1-2h, cooling after washing is to neutral, and crushed after being dried to 200 order i.e. obtained activated carbon product.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106865544A (en) * | 2017-03-27 | 2017-06-20 | 上海金湖活性炭有限公司 | A kind of repeatable medical activated carbon for utilizing and its production method |
| CN108753399A (en) * | 2018-06-20 | 2018-11-06 | 界首市利民草业有限公司 | A kind of biomass granule fuel and preparation method thereof of low fluxing power |
-
2014
- 2014-11-28 CN CN201410697968.4A patent/CN104448344A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106865544A (en) * | 2017-03-27 | 2017-06-20 | 上海金湖活性炭有限公司 | A kind of repeatable medical activated carbon for utilizing and its production method |
| CN108753399A (en) * | 2018-06-20 | 2018-11-06 | 界首市利民草业有限公司 | A kind of biomass granule fuel and preparation method thereof of low fluxing power |
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