42results about How to "Not easy to crust" patented technology

The invention discloses a spiral rotating bed, comprising a spiral bed layer, a liquid-phase distribution pipe, a shell, a gas-phase inlet, a gas-phase outlet, a liquid-phase inlet, a liquid-phase outlet, and the like, wherein the spiral bed layer is made of porous materials and forms a spiral shape on the axial direction; the liquid-phase distribution pipe is arranged in the axial center of the spiral bed layer and communicated with the liquid-phase inlet; the gas-phase inlet and the gas-phase outlet are arranged at two ends of the shell, and the liquid-phase outlet is arranged at the bottomof the shell. The spiral rotating bed is suitable for gas-liquid mass transfer and reaction, especially the gas-liquid mass transfer and reaction for removing harmful ingredients in gas phase by utilizing liquid phase and with larger gas-liquid. The device has simple structure, small size, high mass transfer efficiency and low pressure drop, can obtain longer gas-liquid two-phase contact paths, realizes forced updating on the surface of droplet surface, and is beneficial to the gas-liquid mass transfer and reaction.

The invention relates to the field of printing ink and discloses high-covering-power styrene-acrylate emulsion, a synthesis method thereof and use thereof in aqueous printing ink. The preparation method comprises: mixing deionized water, an initiator, a lacquer and a composite emulsifier to obtain solution A; regulating the pH value; introducing nitrogen to remove oxygen; mixing a monomer with a molecular weight regulator to obtain solution B; dripping solution B into solution A to perform a chemical reaction; regulating the pH value of shell emulsion and heating to prepare shell emulsion; adding a composite emulsifier and an initiator into the synthesized shell emulsion; dripping a vinyl monomer to synthesize core-shell emulsion; and cooling, regulating the pH value and filtering to obtain the styrene-acrylate emulsion. The invention also provides aqueous printing ink using the high-covering-power styrene-acrylate emulsion. The preparation process is very simple, the reaction processis simple and easy to control, the operability is high, and the method is suitable for large-scale production. The aqueous printing ink disclosed by the invention is high in resolubility, is insusceptible to crusting and blocking printing plate and has high printing adaptability.

The invention discloses a upflow anaerobic reactor. The novel upflow anaerobic reactor comprises a tank, a stirring cracking assembly, a built-in heat energy conversion unit, a feeding device, a discharge device, a pressure protector, a gas outlet pipe and a slag discharge pipe. The stirring cracking assembly having functions of stirring mixing, cracking and slag removal, the built-in heat energy conversion unit, the discharge device which is sealed by water and can discharge dross, and the feeding device provided with a stored material automatic discharge device are ranged in the tank. The novel upflow anaerobic reactor is easy for operation, does not produce crusting in treatment on a fermentation mixture of livestock and poultry night soil, rural domestic organic garbage and straws, allows an uniform and constant reaction temperature, can operate stably and reliably, has low investment and operation costs, a high-load treatment capacity, large TS concentration and short hydraulic retention time. Through the novel upflow anaerobic reactor, a solid content of a fermentation solution is in a range of 8 to 15%; COD clearance is in a range of 60 to 80%; and a biogas yield is in a range of 1.5 to 3m<3> / m<3>*d.

The invention discloses an acidic silicone sealant and a preparation method, the preparation method comprises the following steps: 1)preparing the raw materials; 2)adding 200-220 parts of glue 107, 2-6 parts of thixotropic agent in a glue cylinder, vacuum-pumping and stirring for 3-5 minutes; 3)sucking 10-20 parts of cross-linking agent in the glue cylinder after opening a material pumping valve, then closing the material pumping valve; stirring; 4)sucking partial gas phase white carbon black in the glue cylinder by using a membrane pump, stirring; 5)repeatedly operating for 1-4 times on the residual gas phase white carbon black according to step 4); 6)fully mixing 120-130 parts of 330 silicone oil and 0.09-0.15 parts of tin acetate to obtain a mixture; 7)sucking the mixture in the step 2) in the glue cylinder after stirring, then stirring again; keeping degree of vacuum as -0.09--0.1MPa during the stirring process; and 8)filling nitrogen and emptying after stirring in the step 7) to obtain the acidic silicone sealant. The acidic silicone sealant has the advantages of good cementability, strong sealing, difficult skinning and no sagging.

The invention discloses a CVI process method for quickly preparing a carbon / carbon composite material crucible side in batches, which restricts the gas flow area through the suit of crucible side prefabricated bodies of different sizes, and reasonably sets the fluid flow route so that the gas is limited in a narrow space. Flow in the area while controlling its residence time in the narrow gap. The advantage of narrow slit flow is that during the pyrolytic carbon deposition process, the surface of the preform is not easy to crust, so that the preform of the crucible side can be deposited to a relatively high density at one time. When the hydrocarbon gas flows through the first layer of crucible from top to bottom When helping the prefabricated body, cracking and pyrolytic carbon deposition reactions occurred in a high-temperature environment. When the gas reached the second layer of the crucible preformed body, part of the precursor in the gas source had been consumed. The combination of consumed precursors, set-up and supplementary gas can greatly improve the efficiency of carbon / carbon composite crucible side preparation.

The invention relates to the field of printing equipment, and specifically discloses an ink fountain, which includes a box body and an outer casing. A supporting seat is fixed inside the outer casing, and a hemispherical groove is arranged on the supporting seat. The box body includes a circular base, two fixed pieces and two movable pieces. The fixed piece is fixed on the upper end of the circular base, and the movable piece is rotated on the circular base. The way of rotation is: fixed on the circular base There are two rotating blocks, the rotating block is made of rubber, the two ends of the rotating block are fixedly connected with the two fixed pieces, and the two movable pieces are fixedly connected with the two rotating blocks respectively, and the movable piece can be sealed and connected with the fixed piece, The combination of all fixed pieces and movable pieces can form a sphere. An installation ring is fixedly arranged on the fixed piece, and a socket is arranged on the circumference of the installation ring, and a post is fixedly provided on the inner side of the top of the movable piece, and the post can be inserted into the installation ring. The purpose of the invention is to solve the technical problem that the ink remains on the inner wall of the ink fountain and causes waste.

The invention relates to a dispersion liquid film type absorption tower used for organochlorosilane concentrated acid hydrolysis. The absorption tower comprises a casing, wherein a liquid distribution plate is fixedly mounted between an upper seal head and an outer barrel body of the absorption tower; a splash-proof screen mesh is arranged on the liquid distribution plate; 3-10 layers of neatly arrayed film forming plates are arranged below the liquid distribution plate and are supported horizontally; an included angle between every film forming plate and the water level ranges from 15 degrees to 75 degrees; and film forming plates are arrayed in a staggered manner between adjacent layers. According to the absorption tower, appropriate reacting pressure (0.1 MPa to 0.5 MPa of gauge pressure) enables HCl gas generated by hydrolysis to have sufficient pressure; the dispersion liquid film type absorption tower enables an organic phase and an aqueous phase to be contacted in a film manner, so that the hydrolysis reaction is sufficient without emulsion; and a phase separator is used to separate hydrolysates and concentrated hydrochloric acid rapidly, the hydrolysates are prevented from polymerizing under the acid catalysis, and the qualities of the hydrolysates are improved.

The invention relates to varnish for water-borne anti-counterfeiting ink and water-borne anti-counterfeiting ink prepared by varnish. The varnish for water-borne anti-counterfeiting ink consists of the following components in parts by weight: 20 to 25 parts of purified water, 40 to 45 parts of water-borne polyurethane resin, 5 to 7 parts of propylene glycol, 3 to 5 parts of a water-borne film forming plasticizer, 0.2 to 0.5 part of a defoaming agent, 0.5 to 1 part of a leveling wetting agent, 20 to 25 parts of nano-calcium carbonate and 0.5 to 1 part of a thickening agent CP-80. The preparation method of the varnish comprises the following steps of: stirring the purified water, the water-borne polyurethane resin, the propylene glycol, the film forming plasticizer, the A34 defoaming agent and the leveling wetting agent in a high-speed stirrer; adding the nano-calcium carbonate and the thickening agent while stirring, and keeping on stirring for 15 minutes until the mixture is completely and uniformly stirred. The water-borne anti-counterfeiting ink has the advantages of plug prevention, good weather resistance and good storage stability.

The invention relates to a concentrated acid hydrolysis system used for organochlorosilane concentrated acid hydrolysis, which utilizes a dispersion liquid film type absorption tower serving as a core and comprises accessory equipment such as a static mixer, an oil-water phase separator and a falling-film evaporator. The absorption tower comprises a casing, wherein a liquid distribution plate is fixedly mounted between an upper seal head and an outer barrel body of the absorption tower; a splash-proof screen mesh is arranged on the liquid distribution plate; 3-10 layers of neatly arrayed film forming plates are arranged below the liquid distribution plate and are supported horizontally; an included angle between every film forming plate and the water level ranges from 15 degrees to 75 degrees; and film forming plates are arrayed in a staggered manner between adjacent layers. According to the absorption tower, appropriate reacting pressure (0.1 MPa to 0.5 MPa of gauge pressure) enables HCl gas generated by hydrolysis to have sufficient pressure; the dispersion liquid film type absorption tower enables an organic phase and an aqueous phase to be contacted in a film manner, so that the hydrolysis reaction is sufficient without emulsion; and a phase separator is used to separate hydrolysates and concentrated hydrochloric acid rapidly, the hydrolysates are prevented from polymerizing under the acid catalysis, and the qualities of the hydrolysates are improved.

The invention discloses a film gluing mechanism with a page capable of being quickly replaced. The film gluing mechanism comprises a glue tank (34) and a glue tank cover plate (33). The glue tank (34)is filled with glue and is internally provided with a plurality of gluing blades (342) which are located on a gluing blade mounting plate (341). An alignment plate (32) and a stamp new page template(31) are arranged on the glue tank cover plate (33). Each gluing blade (342) comprises a blade body (3421), a blade holder (3422) and a blade base (3423). Anticorrosive magnets are arranged under theblade bases (3423), the positions of the gluing blades can be flexibly moved according to different gluing pages, and the gluing blades can be quickly adjusted to the needed pages. The gluing blade mounting plate (341) is made of a stainless iron mesh plate, and is driven to move up and down by a driving cylinder (39) in the working process, so that glue is leaked quickly instead of accumulating on the side edges of the gluing blade bodies. In the working process, the mesh plate plays a role in continuous glue stirring, and the glue can not crust easily.