33results about How to "Reduce the draining speed" patented technology

The invention provides a filtering basket type ultrasonic extraction device for biological effective components, which relates to an extraction device for biological effective components. The invention solves the problems that incomplete filtration of an extract and slow discharge speed of the extract exist in the traditional intermittent type ultrasonic extraction device and a solid material blocks a liquid outlet. In the invention, a filtering basket is connected with an electric lifter by a suspension rope and installed in a liquid storage tank, an annular gas spray head is installed in the filtering basket, at least two ultrasonic vibration boxes are annularly arrayed on the outer wall of the filtering basket, a gas passing pipe is installed on the inner wall of the filtering basket, a liquid discharge pipe is installed on the lower end face of the liquid storage tank, and at least two of the ultrasonic vibration boxes are respectively connected with a control box outside the liquid storage tank by a wire cable. The invention realizes that the extract does not need to be filtered again, and avoids that slag is deposited at the bottom of the liquid storage tank so as to slow up liquid discharge speed and even block the liquid outlet; by the split design of the liquid storage tank and the filtering basket, the invention discharges liquid quickly and is convenient to disassemble and wash the extraction device.

The invention provides a temperature-resistant and salt-resistant viscoelastic surfactant, and a preparation method and an application thereof. The specific structural formula of the temperature-resistant and salt-resistant viscoelastic surfactant is shown, the preparation method of the temperature-resistant and salt-resistant viscoelastic surfactant, and the application of the temperature-resistant and salt-resistant viscoelastic surfactant in a foam fracturing fluid are provided. The temperature-resistant and salt-resistant viscoelastic surfactant disclosed by the invention has both a cationic group and an anionic group, can weaken the influence of counter ions on the area of a hydrophilic head group, reduces the utilization of freshwater resources, and effectively solves the problems ofpoor temperature resistance, poor salt resistance, insufficient fresh water resources, reservoir damage and the like.

The invention discloses a medium-high temperature strong plugging hard rubber recyclable foam drilling fluid and a preparation method thereof. A low-molecular-weight high-temperature-resistant foam stabilizer, a wetting agent and a bubble film density lightening agent are added into clear water to form a temperature-resistant hard rubber base solution. Sodium bentonite, an alkaline regulator, a sulfonate polymer filtrate reducer, a foaming agent, a temperature-resistant resin filtrate reducer and a foam surface viscosity regulator are added into the temperature-resistant hard rubber base solution to form the medium-high temperature hard rubber recyclable micro-foam drilling fluid or completion fluid. A low-density blocking agent is added and stirred to form the medium-high temperature strong plugging hard rubber micro-foam drilling fluid or completion fluid. The medium-high-temperature strong plugging recyclable foam fluid is low in solid phase content, strong in membrane structure and excellent in foam stabilizing effect before and after medium-high temperature; and the recyclable times and the plugging effect of the completion fluid after the micro-foam drilling fluid can be improved, the loss of the drilling fluid is reduced, the safe and high-effect recyclable micro-foam drilling and completion fluid can be used for exploiting medium-high-temperature and low-pressure easily-leaking oil and gas resources, geothermal wells and the like, and the deep well drilling requirement is met.

The invention relates to the technical field of preparation of foaming agents used for oil recovery in an oil reservoir, and in particular relates to a preparation method for a temperature-resistant salt-tolerant oil-displacing foaming agent. According to the method provided by the invention, firstly a reaction is performed to obtain a linear alkyl benzene sulfonate, the linear alkyl benzene sulfonate is compounded with alkyl diphenyl ether sodium disulfonate and polyacrylamide to obtain a novel substance, so that thermal stability is enhanced, and the temperature resistance and salt toleranceof the oil-displacing foaming agent are improved; a hydrogen bond is easily formed in polyacrylamide, so that the mineralization resistance and salt tolerance of the substance are improved; a titanate coupling agent is used to modify quartz sand powder, and the modified quartz sand powder, yeast powder and white sugar are subjected to fermentation together, so that the temperature resistance of the alkyl benzene sulfonate is enhanced at the high temperature, and the temperature resistance of the oil-displacing foaming agent is improved; and a polyether, a sodium carbonate solution and a sulfonated castor oil foam stabilizer are added, so that the salt tolerance of the foaming agent can be enhanced, the stability of foam is improved, the temperature resistance and salt tolerance of the oil-displacing foaming agent are further improved, and the oil-displacing foaming agent has broad application prospects.

The invention discloses a compound type foaming agent and relates to an additive for a building, in particular to a foaming agent added into concrete. The compound type foaming agent is prepared fromthe following components in percentage by weight: 69-79% of an primary product, 20-30% of N,N'-dinitrosopentamethylamine (DPT), 0.2-0.4% of diglycol and 0.4-0.6% of lauryl alcohol. The compound type foaming agent is prepared on the basis of the original foaming agent, substances with excellent foaming properties are added into the foaming agent, and other additives are added to achieve the effectsof increasing foams, stabilizing foams and regulating. The compound type foaming agent prepared by the method is verified in practical production, and has the outstanding characteristics of being great in foaming amount, small in foam loss, little in strength effect and the like.

The invention discloses a preparation method for a compound type foaming agent, relates to a preparation method for an additive for a building, in particular to a preparation method for a foaming agent added into concrete. The compound type foaming agent is compounded from an initial product, N,N'-dinitrosopentamethylamine (DPT), diglycol and lauryl alcohol. The compound type foaming agent is prepared on the basis of the original foaming agent, substances with excellent foaming properties are added into the foaming agent, and other additives are added to achieve the effects of increasing foams, stabilizing foams and regulating. The compound type foaming agent prepared by the preparation method is verified in practical production, and has the outstanding characteristics of being great in foaming amount, small in foam loss, small in strength effect and the like. The preparation method is simple to operate, is easy to control and is relatively high in yield.

The invention discloses needle-like amino acid crystal cleansing gel and a preparation method thereof, and belongs to the field of daily chemical products. The cleansing gel is prepared from the following components: a phase A component comprising water, EDTA disodium and glycerol; and a phase B component comprising cocamidopropyl betaine, potassium cocoyl glycinate, disodium lauryl sulfosuccinate, decyl glucoside, glyceryl oleate, sodium methyl cocoyl taurate, quaternary ammonium salt-80, sodium isostearoyl lactylate, plant amino acids, methylparaben, N-lauroyl-N-sodium methyl taurate, dodecyl trimethyl ammonium chloride and dodecyl dimethyl betaine. Electrostatic attraction exists between the N-lauroyl-N-sodium methyl taurate and the dodecyl trimethyl ammonium chloride and the dodecyl dimethyl betaine, so that the effect of synergistically improving the foam stability is achieved.

The invention discloses a modified phenolic insulation board with nitrogen as a foaming agent and belongs to the technical field of energy conservation materials in buildings. The modified phenolic insulation board is prepared from, by weight, 55-85 parts of thermosetting phenolic resin, 25-40 parts of nitrogen, 5-25 parts of fumed silica, 15-30 parts of a curing agent, 2-8 parts of a foam stabilizer and 2-10 parts of a toughening modifier. The thermosetting phenolic resin, the fumed silica, the foam stabilizer and the toughening modifier are proportionally mixed and fed into a stirring system, and nitrogen pressure is regulated to be from 0.6Mpa to 0.8Mpa; a chain board in the stirring system is controlled to be from 65DEG C to 75DEG C, the foaming process is gradually completed on a foaming material with stirring and feeding of the nitrogen, and the foaming material is cured into the phenolic-foaming insulation board. The nitrogen is taken as the foaming agent, a uniform physical barrier is provided for foaming, and thermal conductivity of the phenolic-foaming insulation board is lowered; fire-retardant safety is improved, and production cost is reduced.

The invention discloses compound cake emulsifying paste and a preparation method thereof. The compound cake emulsifying paste comprises the following raw materials of glycerol laurate, glycerol arachidonate, methyl cellulose, hydroxypropyl methyl cellulose, a d-sorbitol solution, propylene glycol and deionized water. According to the compound cake emulsifying paste, the stability of a cake slurryfoam system can be improved; a finished cake prepared from the compound cake emulsifying paste is high in bulkiness, good in softness and high in nutrition; and the problems that existing cake emulsifying paste needs to be used in cooperation with an improver, the cake quality is poor, the production cost is high, and the cake emulsifying paste is not easily digested and absorbed by human bodies are solved. The preparation method of the compound cake emulsifying paste is simple, the production is convenient, and an emulsifying agent in the prepared compound cake emulsifying paste has good combinability with oil drops and bubbles in the foam system, so that the stability of the foam system is further improved.

The invention discloses a high-temperature ebonite recyclable foam drilling fluid and a preparation method thereof. The preparation method comprises the following steps: pre-preparing a high-temperature-resistant ebonite base solution from 0.2-0.8 part of a low-molecular-weight high-temperature-resistant foam stabilizer, 1-2 parts of a bubble film density lightening agent and 0.1-0.2 part of a high-temperature wetting agent in clear water; and uniformly mixing 0-3 parts of temperature-resistant sodium bentonite, 0-0.1 part of an alkaline regulator, 0.3-0.5 part of a high-temperature foaming agent, 0.1-0.5 part of a high-temperature-resistant salt-resistant filtrate reducer and 1-3 parts of a high-temperature-resistant resin filtrate reducer, adding the mixture into the high-temperature-resistant base solution while stirring, and conducting stirring for 5-7 hours by using a low-speed strong stirrer. The solid phase content is low, and the membrane structure is strong; and the foam stabilizing effect is excellent in a high-temperature environment, the cycle index of the completion fluid after the micro-foam drilling fluid is increased, the leaking stoppage effect under high temperature and high pressure is improved, the safe and high effect of the recyclable micro-foam drilling and completion fluid is used for exploiting medium-high-temperature low-pressure easily-leaking oil and gas resources, geothermal wells or salt-gypsum layers and the like, and the drilling requirements of deep wells and ultra-deep wells are met.