45results about How to "Improve premix effect" patented technology

The invention relates to an improved method for the titanium ore acidolysis through sulfuric acid in the process of producing titanium white through a sulfuric acid process. The method is characterized in that: the method comprises the following steps: firstly premixing dilute waste acid produced by titanium white production after concentration and trash extraction with the titanium ore; and then adding the premixed ore slurry into an acidolysis pot, and then adding concentrated sulfuric acid so as to initiate a main reaction through the dilution heat produced by the added concentrated acid. The method has the advantages of: 1) improving the reutilization amount of titanium white waste acid and reducing the cost of concentrated waste acid; 2) removing a sulfuric acid cooling link so as to simplify the operation; 3) improving the operational conditions of premixing and acidolysis so as to reduce the risk of technical accidents; and 4) strengthening the premixing intensity, improving the premixing effect, so that the acidolysis reaction is sufficient and the acidolysis rate is remarkably improved.

The invention relates to the technical field of gas turbines, and provides an air inlet structure for a fuel nozzle of a gas turbine. The fuel nozzle comprises a center air channel and a fuel cavity which are communicated with each other, and the center air channel is used for connecting the air into the fuel cavity. A nozzle hanging flange is arranged at one end of the center air channel, and the nozzle hanging flange is provided with air inlet channels used for connecting the air into the center air channel. The nozzle hanging flange is movably sleeved with an adjusting sleeve, and the adjusting sleeve is used for limiting the sizes of openings of the air inlet channels through axial movement. By axially adjusting the adjusting sleeve, the flow of the air entering the center air channel can be adjusted, hence, it is guaranteed that fuel and air have a good pre-mixing effect, tempering can be prevented from happening to a nozzle outlet, and the reliability of the nozzle is improved; in addition, stepless speed change of the gas turbine can be achieved through the adjusting sleeve.

The invention discloses a low-odor polypropylene material for automobile interior decoration and a preparation method and application thereof. The low-odor polypropylene material for automobile interior decoration is prepared from the following components in percentage by mass: 40 to 70 percent of block copolymer polypropylene, 20 to 30 percent of halloysite nanotube masterbatch, 5 to 20 percent of an ethylene octene copolymer, 1 to 10 percent of deodorant masterbatch, 0 to 0.5 percent of a nucleating agent, 0 to 0.5 percent of an antioxidant and 0 to 0.5 percent of a lubricant. According to the low-odor polypropylene material for automobile interior decoration, block copolymerized polypropylene is used as a resin base material, and is modified by adding the halloysite nanotube masterbatchand the deodorant masterbatch, thereby improving the scratch resistance of the polypropylene material and reducing the volatility and odor. The low-odor polypropylene produced by the invention can bewidely used in the automobile field.

The invention discloses a low-emission combustion chamber head with a main combustion stage adopting an axial rotational flow pre-membrane plate matching with blade injection structure. According to the combustion chamber head, the head adopts a center grading design and consists of a main combustion stage and a pre-combustion stage; the main combustion stage is provided an axial rotational flow pre-membrane structure, the main functions of a main combustion stage swirler is that air is enable to generate rotational flow, moreover, fuel oil is injected into the air through small holes in blades, and the fuel oil is atomized and mixed in the swirling air; axial rotational flow pre-membrane blades are aligned with fuel oil injection holes in the swirler blades, and are used for carrying outpre-membrane atomization on the fuel oil, the atomization effect of main combustion stage fuel oil is improved, and therefore the relatively high low-emission performance is achieved; and the pre-combustion stage adopts diffusion flame to stabilized the flame, the main combustion stage adopts the structure in the chamber head to perform fuel oil atomization premixed combustion, so that the low-emission performance of the combustion chamber is further improved.

The invention provides a staged combustion chamber head with an entrainment pre-film plate structure. The staged combustion chamber head comprises a pre-combustion stage and a main combustion stage arranged outside the pre-combustion stage in a sleeving mode. The main combustion stage comprises an inner ring and a sleeve arranged outside the inner ring in a sleeving mode. The inner ring is provided with a plurality of spray holes distributed in the circumferential direction. An annular air channel is formed between the inner ring and the sleeve. Axial rotational flow blades and an entrainment pre-filming plate are sequentially arranged in the air channel from front to back. The multiple axial rotational flow blades are arranged, and the multiple axial rotational flow blades are arranged in the circumferential direction. The entrainment pre-filming plate is annular and is formed by arranging a plurality of segmented arcs in the circumferential direction. The spray holes are arranged right opposite to the arc ridge of the entrainment pre-filming plate, and two segmented arcs are arranged between any two adjacent spray holes. The radial heights of the front end and the rear end of the arc ridge are both larger than the radius of the outer surface of the inner ring and smaller than the radius of the inner surface of the sleeve.

The invention discloses a material premixing device used for a silane coupling agent, and belongs to the technical field of material premixing device. The material premixing device comprises a box body, a water tank, a raw material box, and a motor box; one side of the box body is fixedly connected with one side of the water tank; the bottom of the internal wall of the box body is fixedly connected with a discharge box; a first motor is fixedly connected with the bottom of the internal wall of the box body on one side of the discharge box through a supporting plate; an output shaft of the first motor is fixedly connected with a gear; the bottom of the internal wall of the box body is fixedly connected with a slide rail; the bottom of the slide rail is connected with a tooth bar through a slide block. In using process, users are capable of cleaning the internal wall of the discharge box using a brush plate can be driven by a fixed rod on the toothed bar, pollution of materials on the internal wall in mixing is avoided, blocking of the material premixing device by material residue is avoided, working efficiency is increased greatly, it is convenient for using, material scraping plates can be used for cleaning the internal wall of the mixing box, and stirring plates can be used for material mixing.

The invention provides Sebastes schlegeli adult fish compound feed and a preparation method thereof. The compound feed is composed of fish meal, fermented soybean meal, husked soybean meal, high-gluten flour, fish oil, bean oil, vitamin premix, trace element premix, Vc, betaine, Chinese rhubarb powder, scutellaria root powder, golden cypress powder, allicin and beer yeast powder according to specific quantity. The compound feed belongs to the technical field of aquatic feed. A consistent technical means of adding fresh fish into Sebastes schlegeli feed in the prior art is changed, the compound feed is obtained by effectively combining specific components according to specific content, and a new optimal replacement ratio of fish meal and vegetable protein is provided, so that feed cost and feed coefficient are lowered, and water pollution is reduced.

The invention discloses an electric drive type high-energy mixer for well cementation. The electric drive type high-energy mixer for well cementation comprises an ash valve main body, the bottom of the ash valve main body is provided with a mixer cavity through a connecting union, the side surface of the mixer cavity is fixedly connected with a water valve main body, a mixer cavity body is provided with a flange plate, the flange plate is positioned below the water valve main body, and the bottom of the mixer cavity is provided with a conical disc. The invention further discloses a mud premixing control method. The problems that in the prior art, a hydraulic drive type high-energy mixer is slow in response, poor in mud premixing effect and high in cost are solved.

The invention relates to an air premixed type flare combustor capable of treating poisonous gas. A flare gas cylinder body of the combustor is arranged inside an air clamping sleeve body for forming a clamping sleeve body structure, and swirling plates are arranged inside the clamping sleeve body structure; a flare gas nozzle is installed at the upper end of the flare gas cylinder body; a combustion chamber is connected to the outer wall of the upper part of the air clamping sleeve body through a supporting assembly, and the air clamping sleeve body extends into the combustion chamber; a temperature monitoring element is installed on the inner wall of the combustion chamber; the combustion chamber is of a cylindrical shape, and a gap is formed between the lower part of the combustion chamber and the air clamping sleeve body and accepts entry of secondary air; an ever-burning lamp, an igniter and a combustion-assisting device are arranged outside the air clamping sleeve body in the circumferential direction, are connected to the air clamping sleeve body and extend into the combustion chamber. According to the flare combustor, the air partial combustion-supporting mode is adopted, flames are short, combustion is stable, and the burn-off rate of the poisonous exhaust gas is greatly increased; the height and the manufacturing cost of a torch can be effectively lowered on the same exhaust condition.

The invention provides a miniature heat regeneration diffusion type uniform combustion device with a combustion room shrunk gradually. The miniature heat regeneration diffusion type uniform combustion device comprises an ignition device, an outer sleeve, an inner sleeve and an upper panel. The inner sleeve is located in the outer sleeve. The combustion room is arranged in the inner sleeve. A preheating and premixing cavity is formed between the inner sleeve and the outer sleeve. The upper panel is arranged at the top end of the outer sleeve. A porous bottom plate is arranged at the lower end of the inner sleeve. The circumferential wall of the lower portion of the inner sleeve is a porous wall. An upper end opening of the inner sleeve serves as an exhaust opening. The combustion room communicates with the preheating and premixing cavity through the porous wall and the porous bottom plate. A plurality of air inlets and gas inlets are evenly distributed in the top end of the side wall of the outer sleeve in the circumferential direction. The combustion room of the miniature heat regeneration diffusion type uniform combustion device is in a reversely-buckled cylindrical inwards-concave horn shape so that fuel in the combustion room can be diffused, and inner combustion and temperature field distribution can be more uniform. According to the miniature heat regeneration diffusion type uniform combustion device, smoke waste heat is utilized, meanwhile, a porous material is adopted for multi-face air feeding, combustion is strengthened, a temperature field is more uniform, and therefore the power of the device is improved.

The invention provides a compound fertilizer premixing and conveying system. The compound fertilizer premixing and conveying system comprises a first conveying belt and a second conveying belt, wherein the first conveying belt is used for conveying compound fertilizer ingredient I, and the second conveying belt is used for conveying compound fertilizer ingredient II, a first discharging cylinder is arranged below the conveying tail end of the first conveying belt, and a second discharging cylinder is arranged below the conveying tail end of the second conveying belt; a third conveying belt isarranged below the first discharging cylinder and the second discharging cylinder, the first discharging cylinder is located above the front end of the third conveying belt in the conveying direction,and the second discharging cylinder is located above the rear end of the third conveying belt in the conveying direction; and a sliding chute is arranged at the tail end of the third conveying belt in the conveying direction, and a discharging port of the sliding chute is communicated with a feeding port of a roller conveyor. The compound fertilizer premixing and conveying system effectively improves the premixing effect of all the ingredients of the compound fertilizer, the continuous operation is realized, and the production efficiency is improved.

The invention relates to a preparation method of propellant slurry without a precipitated bonding agent. The method comprises the steps of pre-baking hydroxyl-terminated polybutadiene and a diethanolamine melamine complex for 12h or more at 50+/-10 DEG C so as to reduce the viscosity of the hydroxyl-terminated polybutadiene and the diethanolamine melamine complex; gradually mixing the hydroxyl-terminated polybutadiene with a viscous material by premixing in a small amount for a plurality of times so as to gradually achieve the purpose of evenly pre-mixing the materials; pouring the premixed slurry of the hydroxyl-terminated polybutadiene and the diethanolamine melamine complex into a premix container of the other raw materials for premixing, and fully and evenly mixing. The method guarantees the uniformity of the premixed propellant slurry in the weighing process by utilizing the existing hardware facilities of the process and by means of analysis, explosion and process improvement inthe aspects such as raw material preparation, a premixing process of the propellant slurry and the physical and chemical properties of the raw materials; the method has strong operability; furthermore, the uniformity of the premixed propellant slurry is basically the same, so that the quality of the propellant slurry is improved.