45results about How to "Reduce stirring energy consumption" patented technology

The invention relates to a preparation method of a long carbon chain dibasic acid. C11 and upper alkane is used as a substrate to produce a corresponding long carbon chain dibasic acid product through the conversion of the substrate into the long carbon chain dibasic acid by using a microbial fermentation method as well as the extraction and the separation of fermentation liquid and the refining processes of a crude product of dibasic acid. Through technological innovation and process innovation, the invention researches a new preparation method of the long carbon chain dibasic acid, greatly decreases the production cost of the long carbon chain dibasic acid, improves the yield and the product quality of the long carbon chain dibasic acid, can produce C11 and upper long carbon chain dibasic acid, finally solve the bottleneck problem restricting the rapid development of the long carbon chain dibasic acid, and form the industrialized scale and the technological predominance. The long carbon chain dibasic acid produced by using the bioanalysis provided by the invention has the advantages of high acid generation level, low production cost, good product quality, complete variety, and the like, the prepared long carbon chain dibasic acid product has high single acid content, good light transmission and high thermal stability, can meet the requirements of different clients, and can be used for producing high-grade spices, high-performance engineering plastics, high-temperature dielectric medium, high-grade hot-melt adhesive, coldness-resistant plasticizer, high-grade lubricating oil, high-grade paint, coating, and the like. The invention greatly widens the development space of the downstream products of the long carbon chain dibasic acid.

Provided are a photo-bioreactor and a method for photo-biological cultivation. The photo-bioreactor comprises at least two containers layered vertically, wherein any two adjacent containers are connected with each other, thus the photo-biological culture fluid can flow from the container of top layer to the container of bottom layer one layer by one layer.

The invention discloses a fly ash washing device based on carbon dioxide hardening and tempering, and a method. The device comprises a stirring tank body and a stirring device arranged in the stirringtank body, wherein the stirring device comprises a hollow stirring rod and hollow stirring blades; the hollow stirring rod is a hollow shaft body; the bottom end of the hollow stirring rod is communicated with the hollow stirring blades; the multiple hollow stirring blades are evenly arranged around the bottom end of the hollow stirring rod in the circumferential direction of the hollow stirringrod; air holes, water drainage pipes and injection pipes are arranged on blades of the hollow stirring blades; and a carbon dioxide circulating pipeline is also arranged outside the stirring tank body. According to the fly ash washing device based on carbon dioxide hardening and tempering, and the method, the pH of water is reduced through carbon dioxide, so that dissolution of chlorine salt withlow water solubility is promoted, meanwhile, dissolution of heavy metal and calcium is reduced, and the effects of saving energy consumption and strengthening component separation are achieved.

The invention relates to a double-layer stirring paddle combination device comprising a stirring shaft, wherein an offset paddle and a centripetal paddle are sequentially installed at the stirring shaft from top to bottom. Compared with a traditional combined stirring paddle, the double-layer stirring paddle combination device is characterized in that the upper part of the stirring shaft is provided with the offset paddle, paddle blades are vertically and evenly distributed above and below a disk in a staggered way, and vanes are installed on the disk along a radial direction; and the lower part of the stirring shaft is provided with the centripetal paddle, and paddle blades are pitched at 20 to 70 degrees towards a rotating direction in comparison with the radial direction of the disk. The combined paddle is beneficial to lowering the stirring energy consumption, reducing the mixing time and increasing the axial circulation capability, thereby improving liquid-solid suspension.

The invention discloses a mechanical agitation desulphurization method for molten iron desulphurization pretreatment. The desulphurization method includes five steps including prior sample taking for temperature measurement, prior slag scrabbling, desulfurizing agent adding and agitation, later slag scrabbling and later sample taking for temperature measurement. In the steps of desulfurizing agent adding and agitation, an agitation device is inserted into a molten iron tank containing molten iron, and is composed of an agitator and a guide plate, and the guide plate and the agitator are both vertically instead into the molten iron; and the vertical distance between the bottom of the guide plate and the top of a blade of the agitator is H. Compared with the rotating speed of a conversional KR method, the rotating speed of the agitator is decreased by 10% to 20%; and the insertion depth of the agitator is increased by 10% to 30% compared with the insertion depth of the conversional KR method.

The invention discloses a sludge separation treatment method. The method comprises the following steps: S1: conveying raw sludge into a low-temperature pyrohydrolysis reactor, introducing a backflow liquid generated in a step S5 into the low-temperature pyrohydrolysis reactor, carrying out a low-temperature pyrohydrolysis reaction to obtain hydrolyzed homogenized sludge; S2, conveying the homogenized sludge to a high-solid anaerobic digestion reactor to carry out a high-solid anaerobic digestion reaction, and discharging digested sludge; S3, conveying the digested sludge to a wet-type catalytic air oxidation reactor, adding a catalyst, and carrying out a wet-type catalytic air oxidation reaction to obtain mineralized sludge; S4, conveying the mineralized sludge to a dewatering device, andseparating the solid phase and moisture to separately obtain inorganic sludge and a separated liquid; and S5, carrying out deamination treatment on the separated liquid to obtain the backflow liquid,and conveying the backflow liquid to the low-temperature pyrohydrolysis reactor in the step S1. According to the method, coordinated distribution of substances and energy is realized, great reductionof the sludge can be realized at relatively low cost, and inorganic residues are convenient to dispose.

The invention discloses a citric acid-producing microorganism strain and a method for producing citric acid by fermenting starch sugar thereof. The strain is Aspergillus niger 101-HAC11 with an accession number of No. CGMCC No. 12480. At that same time, a culture medium formula and a fermentation process control process for producing citric acid by using starch sugar as carbon source are also disclosed. The yield of citric acid produced by the strain is 166.8 g/L. Compared with the prior art, the citric acid yield of the recombinant Aspergillus niger strain is 220.34 g/L, and the yield is increased by 32.10%. The method has the characteristics of high speed, simple production process, non-toxic residue and high safety.

The invention discloses an alkylation method for isobutane and C3-C5 olefins. The method comprises the following steps: S1, raw hydrocarbon containing isobutane and C3-C5 olefins as well as a catalystsulfuric acid are added to a liquid-liquid separation device, acid hydrocarbon emulsion with average diameter of dispersed-phase droplets smaller than 20 mu m is formed, dispersed isobutane, C3-C5 olefins and the catalyst sulfuric acid are subjected to a contact reaction at the temperature of subzero 5 DEG C-4 DEG C, and a mixed reaction material containing unreacted raw hydrocarbon, a reaction product and sulfuric acid is formed at an outlet of the liquid-liquid separation device; S2, the reaction material in S1 enters a stirring reactor for continuous reaction at the temperature of 5-20 DEGC; S3, alkylated oil is separated from a reaction product in S2. Alkylation reaction time when acid hydrocarbon is highly dispersed can be prolonged, adverse impact of incomplete reaction on octane value of the alkylation product is reduced, and the octane value of the alkylation product is increased.

The invention discloses an aquatic plant recycling method. The method comprises the following steps: 1, producing a botanical feed: 1-1) preprocessing a raw material; 1-2) producing a feed; and 1-3) nursing livestock and poultry; 2, producing biomass energy: 2-1) carrying out retting pretreatment; 2-2) mixing raw materials; 2-3) carrying out dry anaerobic fermentation; and 2-4) carrying out biogas comprehensive utilization; and 3, producing a high-efficiency multi-bacterial composite ecologic fertilizer: 3-1) preparing raw materials; 3-2) mixing and proportioning the raw materials; 3-3) carrying out high-temperature aerobic composting; 3-4) carrying out medium-temperature aerobic composting; and 3-5) mechanically granulating the obtained product, and packaging the granulated product. Aquatic plant wastes are adopted as the raw material, so the environment problems brought by landfill, onsite stacking or burning and other common aquatic plant waste disposing means are solved, the aquatic plant recycling mode is enriched, and values of aquatic plants are fully shown.

The invention relates to antibacterial plastics and discloses an antibacterial TPE (Thermoplastic Elastomer) and a preparation method thereof. The antibacterial TPE comprises the following componentsin parts by weight: 50-60 parts of SBES, 20-60 parts of PP, 60-80 parts of white oil, 5-15 parts of an antibacterial agent, 0.1-20 parts of a flame retardant DOPO and 2-4 parts of a UV-resistant agent, wherein the antibacterial agent is composed of one or more than one of quaternary ammonium salt, chitosan and sorbic acid. The antibacterial TPE has an effect of retarding reduction of the antibacterial effect of the antibacterial TPE along with oxidation time.

The invention provides a large fermentation tank stirring device and a stirring method. The large fermentation tank stirring device comprises a tank body, a stirring device body in the tank body and a control system. The large fermentation tank stirring device is characterized in that the stirring device body comprises a central shaft and at least two blade shafts, the central shaft is vertically arranged in the middle of the tank body, a rotary disc is arranged on the central shaft, the central shaft is driven by a central shaft movement driving motor and drives the rotary disc to rotate, the blade shafts are arranged on the rotary disc, stirring blades are arranged on each blade shaft, and each blade shaft is driven by a blade shaft driving motor to be in autorotation while being along with revolution of the rotary disc. The control system controls linkage and rotating speed of the central shaft movement driving motor and the blade shaft driving motor and rotating direction of the blade shafts to realize autorotation and revolution of the blade shafts, and materials in the tank body are stirred by the blades on the blade shafts. By using the large fermentation tank stirring device, fermentation liquid can be fully stirred, fermentation quality can be improved, and stirring energy consumption and power consumption in delivering filtered air into the bottom of the tank body can be lowered.

The invention discloses a fermentation method for fermenting liquid fodder. The method comprises the following steps that water is added into cereal raw materials, even mixing is carried out, mixture liquid is prepared, and the pH value of the mixture liquid is regulated to range from 5.5 to 6.5; amylase is added into the mixture liquid, thermal insulating processing is carried out; high-temperature sterilizing is carried out on the thermal insulated mixture liquid in advance, cooling is carried out, and fermenting bacteria are inoculated into the mixture liquid to be subjected to fermenting. According to the fermenting method, the problem that the product viscosity is greatly improved after sterilizing is carried out is solved, the material viscosity can be reduced for 20 times to 7000 times or more, the energy consumption of fermenting and stirring can be greatly lowered, and the fermenting cost is lowered. In addition, due to the fact that the viscosity is lowered, the material fluidity is obviously improved, and the fermenting mass and oxygen transferring processed can be obviously enhanced, so that the fermenting process is accelerated, and the product quality is evener and more stable.

The invention discloses a powder surface modification device which comprises a charging barrel composed of a barrel body, a barrel bottom and a barrel top and a stirrer arranged in the charging barrel, wherein the barrel top is provided with a gas outlet used for discharging gas, the barrel bottom is provided with a gas inlet, a permeable plate is arranged in the gas inlet, the permeable plate allows gas to enter the charging barrel and does not allow powder to flow out of the charging barrel, the gas inlet is communicated with an air source and is used for guiding inlet air into the charging barrel, and the stirrer comprises a first group of blades arranged in the bottom of the charging barrel and a second group of blades arranged in the top of the charging barrel. The invention also provides a method for conducting power surface modification by using the device. The powder surface modification device and method have the advantages of being uniform in modification temperature, rapid in temperature rising and cooling, small in powder breakage rate, high in modified powder yield, small in comprehensive energy consumption, small in equipment abrasion, free of particle attachment to the inner wall of equipment and the like.

The invention provides a magnetic loaded ozone catalyst and a preparation method and a use method thereof, and the preparation method comprises the following steps: dissolving a trivalent iron salt and a divalent iron salt in water, and stirring and dissolving in the absence of air; adding a metal salt M, and stirring and dissolving while isolating air; adding powdered activated carbon, uniformly stirring to form a black suspension, and standing and impregnating for 6-24 hours in an air-isolated manner; dropwise adding the soaked turbid liquid into a container filled with a 1-10mol/L alkaline solution, and stirring for 20-60 minutes while isolating air to form a black turbid liquid; filtering the turbid liquid, and drying the solid at 60-100 DEG C for 2-4 hours; and under the protection of N2, calcining at 200-500 DEG C for 1-3 hours to obtain the magnetic loaded ozone catalyst which can be used for catalytic ozonation treatment of industrial wastewater and the like. The magnetic loaded ozone catalyst is micron-sized particles, is large in specific surface area, has catalytic active sites distributed on the outer surface, is easy to contact with pollutants and an oxidizing agent for catalysis, is high in reaction speed, does not have the problems of pore blockage and hardening, and is high in catalytic activity; and the material has magnetism and is convenient to recycle.