70results about How to "Fast demulsification" patented technology

The invention discloses a preparation method of modified emulsified asphalt for an ultra-thin wearing layer. The preparation method comprises the following steps: (1) preparing materials of asphalt, a modifying agent, a cationic quick-cracking type emulsifying agent and water according to the following matching ratio: 45.0-68.0% of asphalt, 3.0-4.0% of modifying agent, 0.25-0.45% of cationic quick-cracking type emulsifying agent, 0.5-2.0% of stabilizing agent, 1-5% of auxiliary agent and the balance of water; (2) rising the temperature of the asphalt to 160-189 DEG C, adding the modifying agent, stirring uniformly, grinding by a grinding machine, and controlling the particle size of the modifying agent to be less than 5mum, thereby preparing the modified asphalt; (3) adding the emulsifying agent and the stabilizing agent into water with the temperature of 40-60 DEG C, and adjusting the pH value to be 1.5-3 by using the auxiliary agent, thereby preparing soap liquid; and (4) preparing the modified asphalt obtained in the step (2) and the soap liquid in proportion by an emulsifying device. By virtue of the scheme, the obtained modified emulsified asphalt for the ultra-thin wearing layer has the advantages of strong adhesive property, high solid content and fast emulsion-breaking speed.

The invention discloses a fast repairing method for an asphalt concrete pavement. The method adopts the following materials by weight part: 1 to 40 parts of magnesium phosphate cement; 10 to 30 parts of rubble with particle sizes ranging from 5 to 10 mm; 20 to 40 parts of rubble with particle sizes ranging from 11 to 16 mm; 20 to 50 parts of stone chips with particle sizes smaller than 5 mm; 5 to 15 parts of medium sand; 0 to 10 parts of mineral powder; and emulsified asphalt added according to 4 to 10 percent of bitumen-aggregate ratio. After being stirred uniformly, all the materials are poured to the damaged pavement which is cleaned; and when the materials are tamped and flattened, the damaged pavement is only maintained for about 3 hours. As the method adopts the pouring forming method in the practical application, and no stirring equipment and no construction equipment are required during the application process, the method has the advantages that the construction is convenient; the maintenance time is short; the impact on transportation is low; and application requirements on both mechanical property and lasting quality can be met. The method is particularly suitable for the fast repairing of the asphalt concrete pavement, and also can be used in small-area of asphalt concrete engineering requiring cold construction.

The invention relates to a method for synthesizing a crude oil demulsifying agent initiator. The initiator is novel thermoplastic resin and is synthesized by chemical reaction from organic phenol, organic amine and formaldehyde which are used as starting materials, wherein the molar ratio of the organic phenol to the organic amine to the formaldehyde is 1:(2-4):(2-6). By adopting the initiator, a demulsifying agent which is high in demulsifying speed and dehydration rate and has a good use effect at a low temperature can be synthesized, a lot of heating energy sources of an oil field can be saved, the crude oil demulsifying dehydration cost is reduced, and the pollution to the environment is reduced, so that the initiator has important practical significance for crude oil production, gathering and transportation.

The invention relates to the technical field of petroleum demulsifiers and their preparation, and relates to a demulsifier for treating heavy oil and a preparation method thereof. The raw materials of the former include polyoxyethylene polyoxypropylene block copolymers, ketoacids, acetylenic alcohols and water. The oxyethylene polyoxypropylene block copolymer is mixed and dissolved with keto acid, acetylenic alcohol and water after being heated in a reactor to obtain a demulsifier for treating heavy oil. The demulsifier for treating heavy oil of the present invention has the characteristics of fast demulsification speed and good water quality after separation, especially can solve the corrosion problem of equipment containing acid demulsifier products, and has better antirust and anticorrosion effects. The preparation process of the present invention is simple, convenient for large-scale production, and the demulsifier for treating heavy oil has excellent demulsification effect and dehydration performance. At the same time, the raw materials do not contain sulfur, phosphorus, aromatic rings, chlorine and other substances harmful to human body and environment, which meet the requirements of The concept of safe and environmentally friendly production.

The invention discloses an oily sludge treatment process and a device. The oily sludge treatment process includes the steps of watering and stirring for dilution, ultrasonic wave demulsification, solid-liquid separation and oil-water separation. The device comprises an oily sludge treatment system, an automatic control system and a power supply device, wherein the oily sludge treatment system comprises a stirrer, an ultrasonic wave demulsification device, a centrifugal machine, a ultra-filtration system, an oily sludge storage tank, a sludge tank, a centrifugation liquid storage tank, a concentration tank and a filtrate tank, the stirrer is used for adding water into oily sludge for diluting the oily sludge, the ultrasonic wave demulsification device is used for demulsifying the oily sludge, the centrifugal machine is used for performing solid-liquid separation to the oily sludge, the ultra-filtration system is used for performing oil-water separation to the oily sludge, the oily sludge storage tank is used for storing the oily sludge, the sludge tank is used for storing the sludge, the centrifugation liquid storage tank is used for storing oily sewage, the concentration tank is used for storing oil, and the filtrate tank is used for storing water. According to the oily sludge treatment process and the device, the design is novel and reasonable, achievement costs are low, the treatment speeds are fast, the separation of the oil, the sludge and the water is thorough, the resource utilization of the oily sludge is achieved, and environmental pollution and resource waste are reduced.

The invention discloses an oil-soluble demulsifier and a preparation method thereof. The preparation method comprises the following steps: adding phenyl hydrogen-containing silicone oil and an organic solvent into a reaction kettle; heating to 70 to 75 DEG C with stirring; adding a suitable amount of catalyst at the temperature; then heating to 80 to 130 DEG C; dropwise adding a mixture of long-chain carbon olefins and polyether; after the mixture is dropwise added, reacting for 5 to 10 hours at the temperature; distilling under a reduced pressure to remove low-boiling-point substances and unreacted raw materials to obtain the novel oil-soluble demulsifier, wherein the molar ratio of the phenyl hydrogen-containing silicone oil to the mixture of polyether and long-chain alkyl is 1:(1-1.3); the molar ratio of polyether to long-chain carbon olefins is 1:(1-4). The novel oil-soluble demulsifier provided by the invention can prolong action time in demulsification application, and moreover, has the advantages of high-efficiency demulsifying effect, wide application range, small using amount and low toxicity.