36results about How to "Increase fermentation speed" patented technology

The invention relates to the field of livestock and poultry feces treatment methods, and in particular relates to a deep dehydration recycling method for livestock and poultry feces. The method specifically comprises the following steps: adjusting the pH value of the livestock and poultry feces to be 2-4, adding ferrite or ferric salt into the livestock and poultry feces with the adjusted pH value, uniformly stirring, subsequently adding hydrogen peroxide into the livestock and poultry feces, stirring for 50-180 minutes, adding a phosphorus curing agent into the treated livestock and poultry feces, adjusting the pH value to be 8.5-10.5, uniformly stirring, and performing filter pressing on the treated livestock and poultry feces by a filer press for dehydration. The method is high in speed, short in period, high in solid recycling rate, high in dehydration degree, low in energy consumption and low in cost.

A process for preparing heptahydrated zinc sulfate from the residual liquid after extracting indium and zinc oxide includes such steps as preparing the extracting liquid from said residual liquid and sulfuric acid, heating, extracting zinc oxide while stirring, laying aside, filtering, oxidizing the filtrate by potassium permangnate for removing Fe and Mn, cleaning by using zn powder for displacement, concentrating, crystallizing, separating and drying.

The invention provides a crawler type vacuum pumping filter. The vacuum pumping filter comprises a frame, a pumping filtration part, and a distributing device; the pumping filtration part comprises a piece of filter cloth, a pumping filtration adhesive tape, a slide plate and vacuum pumping filtration boxes; the vacuum pumping filtration boxes are arranged below the slide plate, the pumping filtration adhesive tape is arranged on the slide plate, the filter cloth is arranged on the pumping filtration adhesive tape and is tightly attached to the pumping filtration adhesive tape, and the pumping filtration adhesive tape is opened with pumping filtration pockets and vent holes; the filter is characterized in that a layer of pumping filtration spacer screen is arranged between the filter cloth and the pumping filtration adhesive tape, wherein the pumping filtration spacer screen employs a spiral polyester screen with larger pore diameter and is fixed to the pumping filtration adhesive tape, and the width of the pumping filtration spacer screen is less than the width of the filter cloth. The filter has the beneficial effects that the pumping filtration spacer screen has a certain anti-compression capability and can support the filter cloth during vacuum-pumping, pumping filtration pockets of the pumping filtration adhesive tape are not blocked, the spacer screen has a certain thickness for increasing water passing volume, thickness of cloth is increased, pumping filtration effects are improved, normal operation of vacuum equipment is guaranteed, and usage life of equipment is prolonged.

The invention discloses a coagulant for treating fine-grain high-viscosity soil coal slime water, and the coagulant is prepared by evenly mixing more than two of barite powder, calcite powder, dolomite powder and medical stone powder. The coagulant is a mineral preparation, and when the coagulant is used, the coagulant can be discharged along with coal slime in usage, cannot be accumulated in water and cannot influence the water quality; the coagulant can change the electrical property of the surfaces of coal slime particles, so that high-viscosity soil mineral and the coal slime particles are easily flocculated and precipitated, the filter pressing speed of the coal slime is increased, and the cleaned coal quality and yield are improved. The coagulant can be matched with an appropriate amount of flocculating agents, the effect is good when the coagulant is used for treating the coal slime water which is complex in components and difficult to precipitate, the coagulation effect is obvious especially for the high-viscosity fine-grain soil coal slime water, and actual production requirements can be completely met; the water content of treated coal slime filter cakes is decreased below 25 percent, and the content of suspended matter in thickener overflow water is smaller than 150 mg/L.

The invention relates to the technical field of chemical equipment, particularly to a liquid filtering device. The device comprises a tank, wherein a feeding port and a discharging port are arranged on the tank; a magnetic filtering net, a filtering cloth, a decolorizing filtering medium and a micro-porous filtering medium are installed in the tank sequentially from top to bottom; and a receiver is connected to an outlet of the tank. With the adoption of the technical scheme, the liquid filtering device has the benefits as follows: the liquid filtering device is good in filtering effect and capable of effectively removing tiny impurities in a liquid and removing pigments in the liquid; reduced-pressure suction filtration is adopted, the suction filtration speed is high, and the efficiency is high; and a manhole is arranged on the tank, so that maintenance is facilitated.

The invention provides a method for removing sulfur dioxide in smoke by using manganese carbonate ore and preparing a manganese sulfate solution. The method comprises the following steps: (1) introducing smoke comprising the sulfur dioxide into an absorption apparatus with manganese carbonate ore slurry, controlling a flow rate of the smoke at 1 to 4.5 m<3>/s, controlling a liquid-gas ratio of theore slurry to the smoke at 12 to 35 L/m<3>, performing the reaction, obtaining slurry and discharged smoke, wherein the concentration of sulfur dioxide in the smoke reaches the environment-friendly emission requirement; and (2) introducing oxide gas into the slurry after step (1), reacting for 1 to 4 hours, after the reaction is ended, filtering, removing the filter residue, removing impurities of the filtrate, and obtaining a manganese sulfate solution. By adopting the method of the invention, the whole reaction process is easy to control. The method has the advantages of energy conservation, environmental protection, good smoke desulphurization effect, low production cost and the like and is easy in industrialized and continuous production.

The invention discloses a preparation method of high-purity rebamipide. During synthesis process of a rebamipide crude product, the rebamipide crude product is precipitated out, in the form of a rebamipide salt solid, directly from a reaction solution. Thus, effective separation of impurities from a product is realized. A rebamipide salt crude product has good quality and high purity. Without further refining, dissociating is carried out directly by an acid-alkali method so as to obtain a high-purity rebamipide finished product. By the above method to obtain rebamipide, operational steps and refining frequency are minimized, and production efficiency is raised remarkably. In addition, a solvent used is cheap and easily available, and it is beneficial to realize industrial production.

The invention discloses a full-automatic slagging type press filter and a using method thereof. The press filter comprises a cylinder. A feeding device is arranged at the left side of the top of the cylinder. A rack is fixedly connected to the center of the top of the cylinder, a shaft sealing case is arranged in an inner cavity of the rack, a driving mechanism is fixedly connected to the top of the rack, a stirring shaft is installed at the power output end of the bottom of the driving mechanism, stirring blades are installed at the lower end of the stirring shaft, a connecting block is fixedly connected to the right side wall of the cylinder, a cylinder base is rotationally connected to the lower end of the right side of the connecting block, a supporting frame is arranged at the top ofa lower cover, a porous plate is arranged at the top of the supporting frame, a filter fabric is arranged at the top of the porous plate, third sealing rings are arranged at the joints of a pressing ring and the tops of the left and right sides of the lower cover, a connecting frame is fixedly connected to the lower end of the cylinder, and supporting lugs are fixedly connected to the left side wall of the cylinder. The problems that more bolt fasteners need to be disassembled every time the cover is opened due to the design mode adopted by a conventional press filter, large operation space isneeded when the upper cover and other components are opened, residues are taken out, and replacement of the filter plate is quite inconvenient are solved.

The invention provides a poultry excrement hydrothermal treatment dewatering method which comprises the following steps: adding an oxidizing agent into fresh poultry excrement, mixing and performing hydrothermal reaction treatment; mixing the treated poultry excrement with a proper amount of water, then dewatering to finish the treatment on the poultry excrement. The poultry excrement hydrothermaltreatment dewatering method can perform dewatering treatment on the poultry excrement and has the advantages that equipment is simple and easy to operate, a treating speed is quick, a period is short, a dewatering degree is high, a solid recovery rate is high, energy consumption is low, cost is low, and a wide application prospect is achieved.

The invention provides a textile sewage pressure filtration device. The device comprises a pressure filtration table, pressure filtration holes are arranged in the center of the top of the pressure filtration table, spacing guiding plates are arranged at two sides of the pressure filtration holes, a pressure filtration frame is movably arranged on the spacing guiding plates, the pressure filtration table at one end of the pressure filtration frame is provided with a residue guiding plate, the other end of the pressure filtration frame is connected with the piston rod of a frame pushing cylinder, the pressure filtration table outside the spacing guiding plates is provided with guiding columns, a top board is arranged at the tops of the guiding columns, a pressure filtration cylinder is fixed at the top of the top plate, the piston rod of the pressure filtration cylinder downward traverses through the top plate and is connected with the top of a pressure plate, guiding slide blocks are arranged at two sides of the pressure plate, a filtered water outlet is arranged at one side of the lower portion of the pressure filtration table, and a water guiding groove is arranged in the pressure filtration table below the pressure filtration holes. The device has the advantages of compact structure, good pressure filtration effect, fast pressure filtration speed and high efficiency.

The invention discloses a recrystallization device for a chemical product. The device comprises a suction flask, a hose, a base and a base plate. A soft wood plug is arranged above the suction flask,a funnel port and a Buchner funnel are arranged at one end of the soft wood plug, a rubber plug is arranged at one end of the hose, the other end of the hose is connected to the suction flask, a glasstube and a safety bottle are arranged at one end of the rubber plug, a bracket and an iron bracket are arranged above the base, an asbestos wire gauze is fixedly mounted at one end of the bracket, and an evaporation hood and an evaporation vessel are arranged above the asbestos wire gauze. The recrystallization device for the chemical product is provided with a rubber anti-skid sleeve, the safetybottle and the evaporation hood, can prevent slip when sweated hands are in contact with an alcohol lamp, also can prevent a suck-back phenomenon caused by operating errors to pollute a sample, can reduce evaporation of the sample, saves resources and suitable for different working conditions, and brings a better application prospect.

The invention relates to an NCM622 anode material coating modification method and belongs to the technical field of preparation of electrode materials. The method comprises the following steps: (1) coating: mixing nickel-cobalt-manganese ternary anode material powder with a dispersing agent, adding an alumina sol, and performing thermostatic reaction; (2) water washing: adding stirred material andequal weight of water into a stirring tank, and stirring to obtain a slurry; (3) suction filtration: pumping the sufficiently stirred slurry into a suction filtration tank for suction filtration; and(4) drying: putting the material after suction filtration into a double-cone drying tank for drying, so as to obtain the aluminum coated ternary anode material. According to the invention, the waterwashing cost is lowered based on the procedures of water washing and drying, and therefore, water washing is simpler, suction filtration speed is higher, efficiency is higher, productivity is promotedby more than two times, the production efficiency of a dynamical type ternary anode material is increased, and influence to the performances is avoided.

The invention discloses a fermentation device for preparing straw organic fertilizer, which comprises a tank body, the tank body is a main shell structure of the fermentation device, and a fermentation cavity is arranged in the tank body; the bearing plate is located in the fermentation cavity, supporting springs are fixedly connected to the bottom surface of the bearing plate, and the bearing plate and the fermentation cavity form an elastic structure through the supporting springs; the cover plate is mounted on the outer surface of the tank body, and the tank body and the cover plate form a rotating structure. According to the fermentation device for preparing the straw organic fertilizer, in the fermentation process, part of the mass in the fermentation device can become CO2 to be volatilized, so that the weight of a material is reduced, at the moment, a supporting spring can gradually jack up a bearing plate to ascend, a first magnetic block on the bearing plate can repel a second magnetic block, and the second magnetic block can repel the second magnetic block; and at the moment, the second magnetic block stretches the blocking block through the top cover and is not clamped with the groove any more, so that the cover plate can be pushed away through pressure.

The invention discloses a preparation method of a high-efficiency and environment-friendly graphene-paraffin phase change microcapsule material, and relates to a preparation method of a graphene-paraffin phase change microcapsule material. The problems of low yield, high pollution and low production efficiency in the existing graphene-paraffin phase change microcapsule material production process are solved. The preparation method comprises the following steps: 1, preparing a graphene oxide dispersion liquid; 2, adjusting the pH value; 3, adding solid paraffin; 4, adding L-ascorbic acid; 5, cooling; and 6, carrying out suction filtration, washing and drying in the shade. The method is used for preparing the high-efficiency and environment-friendly graphene-paraffin phase change microcapsule material.

Provided is a method for continuous gradient acidification of DSD acid. The method uses 2-6-stage acidification kettles, a feed port of the later-stage acidification kettle is communicated with a discharge port of the former-stage acidification kettle, the set value of the pH value of the first-stage acidification kettle is not smaller than 5.0, the set value of the pH value of the last-stage acidification kettle is not larger than 3.5, and the set value of the pH value of the later-stage acidification kettle is not larger than the set value of the pH value of the former-stage acidification kettle. The process includes the following steps of stabilizing the temperature of each stage of acidification kettle at 60-110 DEG C, starting to conduct stirring, adding a DSD sodium sulfate solutionand inorganic acid into the first-stage acidification kettle, and only adding inorganic acid into the subsequent acidification kettles so that the pH value of each stage of acidification kettle can bestabilized at the set value of the pH value of the stage of acidification kettle to obtain a solid-liquid mixture (the acidified DSD acid) flowing out of the first-stage acidification kettle. By means of the gradient pH value reducing method, a small number of DSD acid crystals separated out in the former period serve as the crystal seeds, necessary conditions are provided for the subsequent DSDacid crystal growth, and the obtained DSD acid is high in press-filtration speed and high in content and contains few impurities.