48results about How to "Increase volumetric gas production rate" patented technology

The invention provides a method and a device for producing bio-gas by organic waste. The method comprises a pretreatment step, a solid state reaction step, a solid-liquid separation step, a liquid state reaction step, a bio-gas utilization and slag liquid processing step; the device comprises a pretreatment apparatus, a solid state anaerobic fermentation cylinder, a solid-liquid separator, a liquid state anaerobic fermentation cylinder, a bio-gas utilization apparatus and a slag liquid processing apparatus. The solid state anaerobic fermentation cylinder is respectively connected with the pretreatment apparatus and the solid-liquid separator, the solid-liquid separator is connected with the liquid state anaerobic fermentation cylinder, and the liquid state anaerobic fermentation cylinder is respectively connected with the bio-gas utilization apparatus and the slag liquid processing apparatus. According to the invention, the organic waste can be processed with solid-liquid two-stage diphasic anaerobic digestion, so that the method is capable of realizing the harmlessness of organic waste, quantitative reduction treatment and resourceful utilization, acquiring the renewable cleaning energy and satisfying the urgent requirements of energy saving, emission reduction and environmental protection.

The invention discloses a novel technique for hyacinth resource utilization, which comprises the following steps: collected roots and stems of hyacinth are separated and respectively pulverized into thick slurry states; the thick slurries are respectively pressed and filtered to obtain stem filtration residue, root filtration residue and root-stem filtration liquid; the root-stem filtration liquid is treated by a constructed wetland system and discharged; anaerobic fermentation inoculum is added into the stem filtration residue to generate marsh gas through anaerobic fermentation, wherein the load of an anaerobic reactor TS is 2.0 to 6.0 percent; and the water ratio of the root filtration residue is adjusted to 55 to 77 percent with straws, the C/N is adjusted to 25 to 35 percent, and aerobic compost is carried out. Because the roots and the stems of hyacinth are respectively filtered after being separated, and the filtered roots and stems are respectively carried out resource utilization in the anaerobic fermentation mode and the aerobic compost mode, thereby the gas generation performance of hyacinth is improved, the amount of gas generation is increased by 45.99 percent, the treating capability of the anaerobic reactor is improved by times, high-quality compost products are obtained simultaneously, and the invention has good economic benefit and environmental benefit.

The invention relates to a continuously feeding and discharging dynamic dry method anaerobic fermentation apparatus and a method thereof. The apparatus is characterized in that a horizontal type rotating-drum silo accommodating anaerobic fermentation materials can be remained sealed and continuously fed and discharged when rotating. Adjustments of anaerobic fermentation parameters such as premixing of raw materials and anaerobic fermentation inoculums, temperature, water content, pH value, etc. are finished at the same time. When being used in producing biogas, the apparatus is advantaged in that secondary pollution problems are not existed because of no biogas slurry; anaerobic fermentation parameters are easy to control; and that the apparatus produces the biogas uniformly and is suitable for industrialization of the biogas; Materials are remixed continuously in a reactor and in a dynamic anaerobic fermentation state, so that the apparatus has high gas yield and occupies small area.

The invention relates to a horizontal push-flow anaerobic dry fermentation device and process for organic waste, and belongs to the technical field of anaerobic fermentation. The concentration of drymatter in a tank can be increased to 30%-60%, heat consumption is effectively reduced, and gas production rate is increased. Water spraying pipes are arranged at a feed end and a discharge end of a pretreatment pool, a feeder is arranged at the discharge end of the pretreatment pool and communicated with feed ports of an anaerobic fermentation tank, discharge ports of the anaerobic fermentation tank are communicated with inlets of pressers, a conveyor belt II is arranged in the position of the pressers and conveys biogas residues discharged from solid outlets of the pressers outwards, a biogasslurry tank conveys biogas slurry into a cow dung tank through a conveying pipe, the cow dung tank is communicated with inlets of the water spraying pipes, and a push-flow stirring shaft is arrangedin the anaerobic fermentation tank. The concentration of the dry matter inside can be increased to 30%-60% by the anaerobic fermentation tank, heat consumption is effectively reduced, the gas production rate is increased and the yield is increased.

The invention discloses an acidification device and method of high-solid content dry livestock and poultry manure. The acidification device is characterized by comprising a hydrolysis acidification reactor, a biogas slurry refluxing and washing organic acid liquor device, a stirring and acid-squeezing mechanism, a hot water circulation heat transfer system, an acid solution collecting and blending system and an acidification tank angle-regulating mechanism, wherein the inside of the hydrolysis acidification reactor is provided with the stirring and acid-squeezing mechanism; one end of the hollow rotation shaft of the stirring and acid-squeezing mechanism is driven by a reducer motor, the other end of the hollow rotation shaft of the stirring and acid-squeezing mechanism is connected with the hot water circulation heat transfer system; the biogas slurry refluxing and washing organic acid liquor device is connected with the feed hopper of the hydrolysis acidification reactor; the hot water circulation heat transfer system is communicated with the hollow rotation shaft of the stirring and acid-squeezing mechanism, the parts in the hydrolysis acidification reactor perform heat transfer through the stirring and acid-squeezing mechanism; the acid solution collecting and blending system is connected with the hydrolysis acidification reactor, and the spindle heads on both sides of the hydrolysis acidification reactor is used to support the tank angle-regulating mechanism on the rack through a bearing seat. The acidification device disclosed by the invention can be widely used in the acidification treatment process of the livestock and poultry manure.

The invention discloses a device and a method for dry-wet combined anaerobic fermentation for producing a biogas. The device for dry-wet combined anaerobic fermentation for producing the biogas comprises first pretreatment equipment, a dry-type anaerobic fermentation tank, biogas collection equipment, material conveying equipment, solid-liquid separation equipment, second pretreatment equipment, awet-type anaerobic fermentation tank, flocculation dehydration equipment and a sludge pump, wherein biogas dregs generated from the dry-type anaerobic fermentation tank are subjected to solid-liquidseparation and are fed into the wet-type anaerobic fermentation tank; and biogas slurry generated from the wet-type anaerobic fermentation tank is subjected to flocculation dehydration and is flown back to the dry-type anaerobic fermentation tank. The device for dry-wet combined anaerobic fermentation for producing the biogas, which is disclosed by the invention, is reasonable in design, simple instructure, relatively high in organic matter conversion rate, relatively high in volume gas generation rate, relatively good in material impact resistance and wide in application range.

The invention discloses an STAIC high-efficiency anaerobic reactor. The STAIC high-efficiency anaerobic reactor is characterized in that the heights and diameters of two superposed reaction chambers are different from the height and the diameter of a TAIC anaerobic reactor, the diameter ratio of an upper tank to a lower tank is 5:4, the height ratio of the upper tank to the lower tank is 1:4, the height of the whole reactor ranges from 12 to 30 meters, and the high-diameter ratio of the whole reactor is 3 to 6; an adjustable speed circulating pump is arranged on a sludge return pipe; an automatic traction backflow circulator is arranged on a feed pipe; a protective cover is arranged at a feed pipe orifice; a biogas slurry and biogas residue overflow pipe is higher than the return pipe; a back washing switch is arranged on the feed pipe. The STAIC high-efficiency anaerobic reactor has the advantages that the volumetric gas production rate is high, the fermentation rate of the STAIC high-efficiency anaerobic reactor can be twice of that of the TAIC reactor, the area occupied by the STAIC high-efficiency anaerobic reactor is less than that occupied by the TAIC reactor, the capital investment is substantially reduced, the adaptability is widened, as a feed liquid in a backflow tank can be automatically dragged, the blockage of the feed liquid in the pipeline is effectively avoided, the service efficiency is improved, and more importantly, the anti-rush-out load of the tanks is increased.

The invention discloses a device for preparing biogas by continuous treatment of straw and livestock and poultry feces and a biogas preparation method. The device comprises a sedimentation desanding pool, a straw silage pool, a pre-hydrolysis balancing pool, a feed buffer tank and an anaerobic fermentation tank. The sedimentation desanding pool and the straw silage pool are connected to the pre-hydrolysis balancing pool; the pre-hydrolysis balancing pool is connected to the feed buffer tank; the feed buffer tank is connected to a feeding port of the anaerobic fermentation tank, a discharging port at the bottom of the anaerobic fermentation tank is connected to the pre-hydrolysis balancing pool, and the top of the anaerobic fermentation tank is provided with a biogas outlet; the anaerobic fermentation tank is equally divided into 4 small compartments by inclined accelerating guide plates. The device for preparing the biogas by continuous treatment of the straw and livestock and poultryfeces cooperates with the biogas preparation method; after the straw and the livestock and poultry feces with backflow biogas slurry are subjected to reasonable carbon, nitrogen and phosphorus proportioning, the volume biogas production rate is high, the methane content of the biogas is high, and the biogas slurry treatment load is reduced.

The invention discloses a microorganism power generating method by utilizing carbon source in a recycling way, comprising the following steps: a) nutritional type microorganisms of light are placed in an illumination bioreactor, liquid nutrient solution is added, carbon dioxide gas is introduced, the microorganism enrichment products at the upper part of the floating illumination bioreactor are output; b) the microorganism enrichment products are input in a methane generator, the generated methane liquid is input in the illumination bioreactor, and the generated methane is input in a combustion motor in a generator set for burning; c) the output carbon dioxide gas is input to the illumination bioreactor. In the method, the luminous energy nutritional type microorganisms are used as primary material for marsh gas power generation, non-renewable resources are not consumed, and harmful gas is not exhausted. By adopting the way of circulating utilization, all products in the process flow can be used.

The invention discloses a method for improving the anaerobic digestion gas-production performance of maize straws through directional acidification pretreatment, and belongs to the field of efficient resource utilization of maize straws. The method comprises the following steps: carrying out pretreatment on maize straws by using sodium hydroxide; acidifying the maize straws, and adding activated sludge into the pretreated maize straws, wherein relatively, 10-50 g of TS activated sludge is added into 52 g of TS maize straws; adding tap water until the tap water accounts for 80% of the total volume of a reaction container, mixing the obtained object, filling nitrogen into the reaction container, and hermetically fixing the container in a shaking table, wherein the temperature of the shaking table is kept at 40+/-2 DEG C; measuring the pH value by using a pH meter every time, and when the pH value is less than 5.5, stopping acidifying; and after methanation startup is completed, by taking an acidified discharged material as a raw material, carrying out feeding and discharging once a day, wherein a fed material and the discharged material are same in volume, and the HRT (hydraulic retention time) is 40 days. According to the invention, the separation of an acidification stage and a methanation stage in biological sciences is realized, and the effects of acidification bacteria groups and methane-producing bacteria groups in respective stage are enhanced, thereby facilitating the stable and efficient operation of an acidification phase and a methane-producing phase, and greatly improving the biodegradability and gas production performance of maize straws.

The invention belongs to the technical field of anaerobic fermentation, and particularly relates to a straw and excrement mixed anaerobic fermentation reactor and a biogas fermentation process thereof. The reactor comprises a tank body and supporting legs; the supporting legs are fixedly mounted on the lower surface of the tank body; a feeding hole is fixedly formed in the upper surface of the tank body; a discharge hole is fixedly formed in the side surface of the tank body; a vertical pipe and a transverse pipe are fixedly mounted on the side surface of the tank body; the lower end of the vertical pipe is fixedly connected with the transverse pipe, and the vertical pipe and the transverse pipe communicate with each other; an air guide pipe is fixedly mounted in the vertical pipe through a bracket; the lower end of the air guide pipe extends into the transverse pipe, and the upper end of the air guide pipe enters the tank body; the two ends of the transverse pipe are communicated with the inner space of the tank body; and an air outlet is fixedly formed in the upper surface of the vertical pipe. The reactor is simple in structure, the biogas slurry in the tank body is stirred in the biogas discharging process, energy consumption is reduced, and meanwhile, the fermentation efficiency is improved and the volume gas production rate is increased through dry and wet two-step fermentation.

The invention discloses a device and a method for preparing biogas and organic fertilizer from biomass through coupling of aerobic fermentation and anaerobic digestion. The method comprises the stepsas follows: solid biomass is classified by classification equipment, long fibers are crushed and then enter a mixer, aerobic composting fermentation treatment is performed after the long fibers are mixed uniformly in the mixer, and an aerobic fermented product is obtained; the aerobic fermented product is crushed, then put in a size mixing tank to be uniformly mixed and pumped in a multi-stage self-circulating anaerobic digestion reactor, effluent enters a multi-stage vortex self-circulating anaerobic reactor and a vortex self-circulating anaerobic reactor step by step to be subjected to anaerobic fermentation for production of biogas, and finally, the biogas is sent to an aerobic process section for deep treatment. As for the characteristic that high-humidity and long fibers exist in biomass materials, crushing pretreatment is performed firstly, high-temperature composting treatment is performed, the higher material temperature can be obtained without heating, no chemical decomposition agents are added, organic fertilizer can be quickly prepared through high-temperature fermentation, and the conversion rate of the materials can be higher in the following multi-stage anaerobic biogas preparation devices.

The invention discloses a dry anaerobic system for treating high-concentration organic wastes. The dry anaerobic system sequentially comprises an anaerobic feeder and an anaerobic inoculator, whereinthe anaerobic inoculator is connected with a plurality of dry anaerobic reactors in parallel or is serially connected with a plurality of dry anaerobic reactors end to end; each dry anaerobic reactorcomprises an anaerobic fermentation chamber; anaerobic feeding hoppers are arranged on the upper parts of the anaerobic fermentation chambers; the other ends of the anaerobic feeding hoppers are sequentially connected with the anaerobic inoculator through pipes; anaerobic discharging devices are arranged on the lower parts of the anaerobic fermentation chambers; the inner walls of the anaerobic fermentation chambers are wound with heating and heat-insulating devices; horizontal plow-shaped stirrers hinged to the two ends of the anaerobic fermentation chambers are arranged inside the anaerobicfermentation chambers; biogas collecting devices are mounted on the outer walls of the other ends of the anaerobic fermentation chambers; each biogas collecting device is connected with a connecting pipe. In a process technology from pollution to recycling, the efficiency of converting organic matters into inorganic matters is improved, the yield of biomass gas is increased, economic benefits areincreased, and the difficulty of difficult elimination in the process of returning a biogas slurry to a field is overcome.