54 results about "Biomass" patented technology

The process for the treatment of ligno-cellulosic biomass comprises the steps of:

• • A) Soaking a ligno-cellulosic biomass feedstock in vapor or liquid water or mixture thereof in the temperature range of 100 to 210° C. for 1 minute to 24 hours to create a soaked biomass containing a dry content and a first liquid;
  • B) Separating at least a portion of the first liquid from the soaked biomass to create a first liquid stream and a first solid stream; wherein the first solid stream comprises the soaked biomass; and
  • C) Steam exploding the first solid stream to create a steam exploded stream comprising solids and a second liquid.

In the biomass hydrolyzing process of preparing reductive monosaccharide, biomass material is hydrolyzed at 100-200 deg.c in the dilute acid catalyst, and the hydrolysate stays in the reactor for 5-40 min. The hydrolysate is divided into three parts based on dydrolysis order and hdyrolysate concentration and the three parts are used as the hydrolysis product and acid solution for the next batch of material to hydrolyze. The partial circulation of the hydrolysate can raise the concentration of monosaccharide in the hydrolysate from 4% to 6% and reduce acid consumption.

The invention provides a method for preparing a nitrogen/carbon-containing material by biomass pyrolysis and carbonization, which comprises the following steps: uniformly mixing biomass and a catalyst, and feeding the catalyst and biomass into a reactor together; in the reactor, heating to perform pyrolysis and carbonization reaction on the biomass organic material in the presence of gas containing reactive nitrogen compounds; and separating the catalyst from the solid product generated by the pyrolysis and carbonization, and collecting the residual solid after pyrolysis reaction to obtain the nitrogen/carbon-containing material.

The invention discloses a biomass pyrolysis system and a biomass pyrolysis method. The biomass pyrolysis system comprises a pyrolysis furnace, a combustion lift pipe, a separation device, a biochar heat carrier pipeline and a smoke flue. According to the biomass pyrolysis system, efficient biomass pyrolysis is realized through simultaneous heating by the aid of internal biochar heat carriers and external smoke.

A process (10) and apparatus (2) for extracting juice from a fibrous material. The process (10) comprises a step of feeding the fibrous material (13) into a receiving chamber (30) having a fluid contained therein. The fibrous material (13) is then combined with the fluid in the receiving chamber (30) to form a first fluid mixture. The first fluid mixture is then passed through at least one cell disruptor device (40) to facilitate at least partial release of juice from the fibrous material into the first fluid mixture, thereby forming a second fluid mixture having a relatively higher released juice content than said first fluid mixture with relatively finely disrupted fibrous material suspended therein. The second fluid mixture is then collected.

The invention discloses a method for applying a biomass extract product to coal blending for coking as an additive. The method comprises the following steps: (1) extracting biomass with an organic solvent, and obtaining a high molecular weight biomass extract and a low molecular weight biomass extract; and (2) applying the biomass extract to coal blending for coking, namely mixing and coking at least one of the high molecular weight biomass extract and the low molecular weight biomass extract with mixed coal at the mass percent of 0.5%-3%. By mixing and coking at least one of the high molecular weight biomass extract and the low molecular weight biomass extract with the mixed coal, the coke reactivity PRI of coke particles can be lowered on the basis of common mixed coal, and the strength of the prepared coke is greatly improved, so that the use ratio of weakly caking coal or non-caking coal in the mixed coal is increased under the premise of ensuring good strength and low coke reactivity of the prepared coke; and the coking cost is reduced.

The invention belongs to the field of building materials, which relates to a shale-sintered hollow ganged brick. The large-sized bearing or nonbearing hollow wall brick is prepared by performing crushing, sieving, stirring, aging, impact molding, drying and roasting on shale taken a main raw material and biomass wastes as raw materials for internal combustion. The shale-sintered hollow ganged brick has the advantages that barren mountain wastes are utilized; fertile farmlands are not occupied; cultivated lands are protected; the energy conservation and the consumption reduction are realized; the construction cost is decreased; the traditional architectural style of ganged walls is maintained and the like.

The invention discloses a method for preparing active carbon from biomass, and active carbon prepared by using the method. According to the method, the active carbon with an ultra-high specific surface area is prepared through baking, breaking, rapid stirring and chelating of an appropriate proportion of an activating agent, high-temperature pyrolysis and activation, acid washing and other steps. Compared to active carbon in the prior art, the active carbon of the invention has the advantages of usage of widely available and cheap raw materials, reutilization of the waste, rich pores and ultra large specific surface area, and has important application value in the fields of electrochemistry and pollutant adsorption. The method is simple in steps and suitable for industrial mass production.

The invention relates to a preparation method and application of a porous biomass acidic solid material. The preparation method is characterized by comprising the following steps: adding a lignosulfonate water solution having a certain concentration, an aldehyde compound, a template agent and a catalyst into a reaction vessel according to a certain ratio, uniformly mixing, and reacting at 50-220 DEG C for 2-120 hours; drying, grinding, removing the template, performing acid treatment, and washing to neutral; and drying to obtain the material. The porous material structurally contains multiple surface acidic groups such as sulfonic groups, carboxyl groups and hydroxyl groups, has a high surface distribution density and is a favorable porous acidic solid material. The material is used for esterification reaction, and the esterification yield is up to 85% or above. The material provided by the invention has the advantages of abundant raw material sources, controllable structure, simple preparation process and the like.

The invention discloses a method for culturing oleaginous microalgae. The method comprises the steps of: inoculating the oleaginous microalgae at a logarithmic growth period into a culture medium containing an organic carbon source, culturing under the alternative circulation environment of irradiation and no irradiation, and culturing until at a platform period. According to the method, cultivation is performed under the alternative circulation environment of irradiation and no irradiation, so that the important role for fixing carbon dioxide is also taken into account while the biomass and lipid yield is guaranteed, and the period of microalga cultivation is greatly shortened.

The invention belongs to the field of building materials, and provides a self-repairing ecological cement road material and a preparation method. A biomass phase change material is used as a carrier for a self-repairing agent, the self-repairing agent comprises calcium salt and carbonic acid, and the biomass phase change material comprises one or more of bamboo powder, wood powder and corn stalk powder and a phase change material. The preparation method comprises the following steps: grinding the biomass material into fine powder, adding into the phase change material, fully mixing to preparethe biomass phase change material, adsorbing the carbonic acid by porous silicon dioxide, and coating with the biomass phase change material to obtain a capsule; wrapping the calcium salt with the biomass phase change material to obtain a capsule; then, adding the two microcapsules prepared in the steps into a cement material matrix. When a road is damaged, the phase change material is dissolved when the temperature rises, and then Ca<+> reacts with the carbonic acid to produce calcium carbonate for repairing the road.

The invention provides an investigation method capable of realizing fast and precise investigation of space-time distribution and dynamic population change of released Chinese prawns. A detection method for released individuals is completed by specifically amplifying DNAs released by the Chinese prawns in a water environment, wherein the DNAs are mainly derived from the excrements and casts of theChinese prawns, an effective detection effect can be achieved on the Chinese prawns in any growth period, and there is no need to collect any Chinese prawn sample. Through real-time fluorescent quantitative PCR, the existence of the Chinese prawns can be judged, and the biomass of the Chinese prawns can be estimated according to the copy number of the DNAs released by the Chinese prawns. The space-time distribution and dynamic population change of the Chinese prawns can be rapidly and accurately detected in order to evaluate the effect of proliferation release.

The present invention provides a modified bacterial strain capable of fermenting both hexose and pentose sugars for production of bioalcohol wherein a promoter of pyruvate dehydrogenase operon (PDH) is replaced with a promoter of a gene that is expressed under anaerobic conditions. The present invention further provides a method of obtaining modified bacterial strain capable of fermenting both hexose and pentose sugar for production of bioalcohol. The present invention also provides a method of fermenting lignocellulosic biomass having hexose and pentose sugar using the modified bacteria for production of biomass.

The invention discloses an epithermal injection biomass pyrolytic system and relates to a biomass pyrolytic system. The epithermal injection biomass pyrolytic system comprises a sample injection device, a reaction device and a condensing device, wherein the sample injection device comprises an air inlet pipe and a pulse valve; the pulse valve releases pulse air flow depending on the difference ofpressure before and behind the valve body; the flow rate can reach hundreds of meters per second; the air flow passes through a silicon carbon pipe at a high temperature quickly, so that a secondary pyrolytic reaction is avoided; the reaction device comprises the silicon carbon pipe, a graphite electrode and an aluminum radiation-resistant cover; after the voltage of the graphite electrode is switched on, the silicon carbon pipe is heated quickly (the temperature range is between 298 and 1,800 K); the condensing device is mainly a vacuum cavity and is cooled quickly depending on the adiabaticexpansion of the air flow; and the sample injection device, the reaction device and the condensing device are connected to be a straight passage shape through a flange plate. The epithermal injectionbiomass pyrolytic system provided by the invention has high heating speed and good cooling effect.

The invention relates to a purification device in a biomass waste resource pyrolysis and gasification system; a container is divided into a drip washing room and a gas-liquid separating room by using a vertical baffle plate; an air inlet and an air outlet are respectively arranged at the top parts of the drip washing room and the gas-liquid separating room; the drip washing room is communicated with the gas-liquid separating room through a purifying solvent circulating opening; the container is filled with the purifying solvent; a spray header of the drip washing room is communicated with the bottom of the container through a delivery pump; flow distributing plates are arranged in the drip washing room; spargers are arranged in the gas-liquid separating room; the air inlet is connected below the flow distributing plate at the bottom layer through a gas guiding pipe; one end of a gas conveying pipe in the gas-liquid separating room is communicated with the upper part of the drip washing room, and the other end of the gas conveying pipe is arranged in the purifying solvent; and gas circulates openings on the two adjacent spargers are respectively arranged at the two sides of the gas-liquid separating room. The purification device integrates functions such as drip washing, bath washing, gas-liquid seperation, counterseal, filtering and the like in a simple structure manner, has compact structure and occupies small space; and liquid particles are separated from gas through the spargers so as to be prevented from damaging follow-up devices.

Methods for the recovery of lipids, sugars, and proteins from microbial biomass by enzymatic digestion are disclosed. The methods involve treating microalgae with a fungal acid protease, or with a mixture of at least one protease and at least one amylase.

The invention relates to a fungus-based biomass fireproof material with wheat straw as a main material and a preparation method thereof. The material is prepared from the following components in parts by mass: 20 to 60 parts of the wheat straw, 10 to 25 parts of rice husk, 10 to 25 parts of wheat bran and 20 to 30 parts of biomass-fireproof-material additive. The preparation method comprises the preparation of an incubating material and sterilization treatment as well as inoculated culture. Biomass materials of the wheat straw and the like are adopted for the fungus-based biomass fireproof material as raw materials; the characteristics that the hypha of a fungus grows quickly and a mycelium is high in twisting force are utilized; the biomass materials of the wheat straw and the like are converted into an environment-friendly biomass fireproof material; the biomass fireproof material is simple in preparation method, low in production cost, high in strength, good in compactness and excellent in fireproof performance, and is an environment-friendly biomass fireproof material extremely having a market prospect and potential.

The invention discloses a kitchen range of biological oil, which comprises an integrated steel bottle, a switch and a cooking stove. Wherein, the cooking stove contains a high-temperature non-oxygen crack reaction room and a normal burning room; the biological oil and water via tubes, steel bottle and switch are fed to the crack reaction room to be mixed cracked; the product is ejected to the burning room to be burnt. The invention uses water as combustion agent and uses the biological oil with high viscosity and complex components as fuel, to solve the problem when burning biological oil with black smoke and jam.

The invention discloses a method for increasing the volume of the low-yield land by crop rotation of wheat straw hoods. The method comprises the steps of a. planting vetiveria zizanioides; b. initially improving the low-yield land; c. planting crops; and d. repeating the steps a, b and c. After three crop rotation periods are finished, the low-yield land can be improved to be medium-yield land. The biomass liveweight of the ground part of the vetiveria zizanioides is large and reaches 58-100t/ha, the full doses of C, N, P and K of the stems and leaf branches in 1kg of vetiveria zizanioides are respectively 422g, 17.4g, 0.5g and 7.5g, so that the stems are decomposed in the soil naturally to play the roles of improving fertility, and improving the oil structure. Meanwhile, the stems of the vetiveria zizanioides are paved on the ground to play the roles of conserving water resources, and preventing rainwater from washing the soil. After the crop rotation of the vetiveria zizanioides, the soil is soft, and the workability of soil is enhanced; the soil fertility (organic nitrogen content) is improved by 60%; the water content of the soil is improved by 30%; the runoff of the oil is reduced by 40%; the grain is increased by 50% in the drought weather, and is increased by 20% in the regular year.

A preparation method of a biomass derived carbon material comprises the steps: mixing soybean protein isolate powder with alkali and water at room temperature, heating the obtained mixture to 65-95 DEG C, stirring to form a colloidal semi-hydrolysis product, and drying to obtain dry hydrolysis powder; stirring and mixing wood powder with the obtained dry hydrolysis powder and zinc nitrate hexahydrate, heating the obtained mixed powder to 800-1000 DEG C under the protection of inert gas, carrying out heat treatment for 2-5 h, and then cooling to room temperature to obtain a black product; and mixing the obtained black product with hydrochloric acid, stirring, standing, filtering, washing a filter cake to be neutral, and drying to obtain the finished biomass derived carbon material. According to the method, the steps of carbonization, activation, element doping and the like can be simultaneously realized through a one-step high-temperature process, and the method has the characteristicsof simple preparation process and equipment and excellent finished product performance.

The invention discloses a method for biologically drying sludge by using rice hull as an additive. The method comprises the following steps: S1, conveying the rice hull, sludge and a return mixed material; S2, mixing the rice hull, the sludge and the return mixed material; S3, conveying the obtained mixed material to the front end of a fermentation tunnel trough by means of a belt conveyor, and unloading the mixed material at the front end of the fermentation tunnel trough; S4, after the mixed material enters a fermentation section, turning over the fermented material by using a pile overturning machine; S5, after fermentation is carried out for 21-22 days, conveying the fermented material to a clinker chamber by means of the belt conveyor from the fermentation section F of the fermentation tunnel trough so as to obtain the dried sludge product. The method adopts the rice hull as biomass for co-substrate fermentation; the rice hull is good in dispersing degree, uniform in mixing, recyclable, convenient to collect and transport and easy to store, thus being suitable for large-scale concentrated sludge treatment; the method can be used for rapidly and efficiently biologically dryingthe sludge, and the sludge drying process is enabled to be efficiently and stably carried out.