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74results about How to "Lower conversion costs" patented technology

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Method for preparing tobacco activated carbon based on low temperature plasma modification

ActiveCN105060293AImprove qualityHigh specific surface areaCarbon compoundsActivated carbonCarbonization

The invention discloses a method for preparing tobacco activated carbon based on low temperature plasma modification. The method is characterized by comprising the steps of: firstly drying and crushing waste and inferior tobacco into fine particles, and performing high temperature carbonization on the fine particles under nitrogen protection so as to obtain tobacco scorching samples; then putting the tobacco scorching samples into an inorganic acid solution for treatment, then cleaning the treated tobacco scorching samples until the cleaned tobacco scorching samples are neutral, putting the neutral scorching samples into an activator solution, macerating the neutral scorching samples in the activator solution, filtering the macerated scorching samples, and drying the filtered scorching samples; and finally, treating the scorching samples with low temperature plasma under activated gas atmosphere so as to obtain the tobacco activated carbon. According to the method disclosed by the invention, the waste and inferior tobacco in cigarette plants is directly prepared into the high-quality activated carbon, so that the cost of raw materials is low, and the purpose of locally transforming and utilizing the waste and inferior tobacco is realized. In addition, through the treatment of the low temperature plasma and under the joint action of fitting modification conditions, an activator and activated gas, the specific surface area of the tobacco activated carbon is enlarged, and the surface chemistry characteristics of the tobacco activated carbon are enriched.

Owner:CHINA TOBACCO ANHUI IND CO LTD +1

Crosslinked alginate-bacterial cellulose sponge and preparation method thereof

ActiveCN103536954AImprove mechanical propertiesSimple structureAbsorbent padsBandagesPolymer scienceFreeze-drying

The invention relates to the field of a biomedical material, and particularly discloses a crosslinked alginate-bacterial cellulose sponge and a preparation method thereof. The crosslinked alginate-bacterial cellulose sponge takes an alginate biomaterial and bacterial cellulose as raw materials. The crosslinked alginate-bacterial cellulose sponge is characterized in that a sponge product is prepared from the alginate biomaterial and the bacterial cellulose in manners of crosslinking and freeze-drying after being compounded, wherein the alginate biomaterial accounts for 80-95% of the sponge product in mass fraction; the bacterial cellulose accounts for 5-20% of the sponge product in mass fraction. The crosslinked alginate-bacterial cellulose sponge is abundant in used material sources, low in cost, controllable to process, and simple in production technology; the prepared crosslinked alginate-bacterial cellulose sponge has good mechanical property, liquid absorption property, water retention capacity and air permeability, and is applicable to bleeding healing of large seepage or a bleeding wound.

Owner:山东颐诺生物科技有限公司

Dry distillation and liquefying method for coal

InactiveCN102391886ALow operating pressureLow costLiquid hydrocarbon mixture productionSpecial form destructive distillationHydrogenTar

The invention discloses a dry distillation and liquefying method for coal. The method comprises the following steps of: 1, mixing a coal raw material, a catalyst and a cocatalyst uniformly, and crushing the mixture to obtain catalyst-carrying coal powder; 2, mixing and preheating the catalyst-carrying coal powder by adopting semi-coke powder, putting the coal powder into a pyrolysis reactor, performing pyrolysis reaction, and obtaining solid semi-coke powder and mixed gas; 3, filtering and cooling the mixed gas under normal pressure, and obtaining tar and coal gas; 4, transforming and separating the coal gas to obtain hydrogen and residual gas by adopting a conventional synthesis gas transforming process, and introducing the hydrogen into the pyrolysis reactor for recycling; and 5, eluting the residual gas through methanol to obtain hydrogen sulfide, and introducing the hydrogen sulfide into the pyrolysis reactor to substitute the elementary sulfur cocatalyst for recycling. Hydrogenation and pressure application are adopted in the dry distillation process, and the coal is liquefied by adopting the cheap nano iron series catalyst; and the method is low in operating pressure, low in cost and high in liquid yield, and has significance for reducing the coal-to-oil transformation cost.

74results about How to "Lower conversion costs" patented technology

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