478 results about "Fermentation rate" patented technology

The invention discloses a multi-cycle stirring egg-shaped anaerobic fermentation system. The system comprises a fermentation tank body and a driving device arranged on the fermentation tank body, wherein the fermentation tank body is egg-shaped, the center of the inner cavity of the fermentation tank body is provided with an inner barrel type spiral stirrer, the outside of the inner barrel type spiral stirrer is provided with a stirrer inner barrel, a temperature heating device is arranged between the wall of the fermentation tank body and the stirrer inner barrel, the bottom of the inside ofthe tank is provided with an umbrella-shaped gas flow distribution device; the upper part of the fermentation tank body is provided with a vent pipe and a pressure control device, the bottom of the fermentation tank body is provided with an umbrella-shaped gas flow distribution device gas inlet pipe and a mud-discharging and sand-discharging outlet; and the side wall of the fermentation tank bodyis communicated with a biogas circulation system, a biogas slurry circulation system, a gas-liquid circulation system, a heating system, a temperature control system and a biogas residue and biogas slurry storage pool respectively. The multi-cycle stirring egg-shaped anaerobic fermentation system adopts multi-cycle stirring to increase the stirring efficiency of the system; and the anaerobic fermentation environment is improved, the fluid is mixed evenly, the temperature difference slightly fluctuates, the energy consumption of the system is low, the fermentation rate is high and the system is suitable for popularization and application.

A process for producing ethanol from a fibrous lignocellulosic raw material. After pre-treatment of the raw material, the fibrous fraction is first hydrolysed at high consistency and then the modified material is subjected simultaneously to continued hydrolysis with a cellulase and to ethanol fermentation in a fermentation mixture. Fermentation is continued to convert an essential portion of the available cellulose into ethanol, then a liquid fraction containing solubilized hemicelluloses is added to the fermentation mixture and fermentation continued. By means of the invention, high fermentation rates, high ethanol concentrations and low ethanol production costs can be attained.

The invention discloses a new preparation process of an agaricus bisporus culture material. The product belongs to the field of edible mushroom, and the invention is characterized by relating to the agaricus bisporus culture material. The invention aims at solving the problem that a new tunnel aeration fermentation method is provided to produce the agaricus bisporus culture material. The method has the advantages that: 1, wheat straw and chicken manure are taken as main raw materials, the raw materials are easily available, nitrogen content in the chicken manure is high, and heat productivityis high; 2, automatic mechanical continuous operation is adopted, manpower is saved, and mass production can be realized; 3, heat distribution in the culture material is uniform, fermentation temperature in the material is basically consistent, and quality can be guaranteed; and 4, fermentation speed is high, production efficiency is high, and less sundry bacteria are contained. The raw materialsused for producing the agaricus bisporus culture material comprise the wheat straw, the chicken manure, calcium carbonate, inorganic compound fertilizer, calcium superphosphate, lime powder and gypsum powder, and the product is used for planting agaricus bisporus.

The invention relates to a biomass pretreatment method, a method and an equipment for preparing firedamp by biomass anaerobic fermentation, comprising the following steps of: 1) treating the biomass as short sections of 3-40mm; 2) soaking the short sections in water at the temperature of 15-80 DEG C for 15-90min; 3) tearing up the soaked short sections into fragments; 4) leading fragments to carry out a hydrothermal reaction under a heating or heating and pressurizing condition; and 5) quenching the straws to obtain saccharification solution or saccharification slag after the hydrothermal reaction. The method improves the biological degradability by the pre-treatment of the straws, quickens the fermentation speed, greatly improves the fermentation efficiency by respectively fermenting the pre-treated solid and liquid, avoids the exhaust of a large amount of waste liquid by the circular fermentation of hydrothermal reaction of the fermentation liquid, leads the whole system to run at high efficiency and greatly improves the conversion rate of the biomass.