208results about "Products" patented technology

The application provides a flexible plugging agent for offshore oil and gas drilling fluid and a preparation method and application thereof, and belongs to the technical field of offshore oil and gas drilling and production. The plugging agent is prepared from the following raw materials: styrene, N-phenylmaleimide, 2-acrylamido-2-methylpropanesulfonic acid, sodium p-styrenesulfonate, 2-methacryloyloxyethylphosphorylcholine, a crosslinking agent, an initiator, a hydrophilic emulsifier, an oleophilic emulsifier and water. The plugging agent has excellent structural stability, heat resistance, salt resistance and hydration stability, has good adaptability to a low-density drilling fluid system, has a flexible deformation capacity, can effectively enter a complex leakage passage to achieve effective plugging, and can maintain the integrity and stability of a plugging layer under drilling fluid circulation shearing, temperature fluctuation and complex downhole conditions, thereby having applicability in a high-temperature and high-pressure drilling environment.

The utility model discloses a steam delivery device for sodium methoxide synthesis, include: gas pipe, the first joint subassembly of assembly on gas pipe, the first joint subassembly is used for transportation sodium alcohol, above -mentioned device through the air pressure of straight cylinder inside heightening, promote the cylindrical air bag in air bag part to the gas pipe direction removal. Cylindrical air bag is closely combined with the inner wall of gas pipe in the moving process, under the push of air pressure, the methanol steam remaining in gas pipe is pushed forward and is arranged in sodium methoxide synthesis tower. At this moment, the area increasing groove on cylindrical air bag can effectively increase the contact area with the inner wall of gas pipe, enhance the leakproofness, reduce steam leakage, and the air pressure balance pipe can balance the air pressure in air bag part, avoid the air bag to break because of excessive pressure. Even if the air bag part of multiple has one because of accidental breakage, other unbroken air bag part still can keep good leakproofness, continue to play the sealing and pushing and shoving effect, ensure that the methanol steam in gas pipe can be effectively discharged.

A system and a method for continuously separating carbon dioxide from gas mixtures, utilizing a continuous loop of porous monoliths which support a sorbent within its pores. Continuously exposing a portion of the continuous loop of monoliths to a flow of gas mixture containing a minor proportion of carbon dioxide, to adsorb carbon dioxide from the flow. The loop passes through a sealed regeneration and carbon dioxide capture assembly located astride a portion of the loop, and which is capable of sealingly containing a monolith in relative movement through the assembly. The assembly chamber comprises a plurality of separately sealed zones, including at least one zone for purging oxygen from the monoliths,-a subsequent zone for heating the monolith to release the adsorbed carbon dioxide, and another cooling zone for cooling the monolith prior to reentering the adsorption portion of the loop where it is exposed to oxygen.

A system for providing agglomerated bovine-based organic microbial fertilizer utilizes a novel agglomeration system to produce agglomerated bovine-based organic microbial fertilizer composed of generally spherical granules that have a high density of nutrients per volume, have almost no odor, and have a shelf life of years when properly packaged and stored, can be sized such that industry standard equipment and spreaders can be used to apply the resulting agglomerated bovine-based organic microbial fertilizer, and can be sized to accommodate various types of uses including residential and commercial uses.

A process and apparatus for CO2 stripping of urea, wherein urea is formed by reaction of ammonia with carbon dioxide in a vertical reactor (1); a first urea-containing stream (12) is withdrawn from an intermediate height of the reactor by means of a first downcomer (103) and is fed to a high-pressure stripping column (2); a second urea-containing stream (15) is withdrawn from an upper height of the reactor by means of a second downcomer (104) and is fed to an eductor (4) for reintroduction into the reactor together with fresh ammonia.

There is a problem that conventionally known carbon dioxide absorption liquids using aqueous solutions of N,N,N',N",N"-pentamethyldiethylenetriamine will have a low carbon dioxide emission rate. A composition for carbon dioxide separation use is used which includes: an amine compound (A) represented by General Formula (1) or (2) as described in the specification; an amine compound (B) represented by General Formula (3) as described in the specification; and water, in which the composition for carbon dioxide separation use may further contain an amine compound (C) represented by General Formula (4) as described in the specification, and the number of moles of nitrogen atoms (nitrogen atoms of tertiary amino groups) contained in the amine compounds (A) and (C) is within a range of 1.0 to 8.0 times the number of moles of nitrogen atoms (nitrogen atoms of secondary amino groups) contained in the amine compound (B).

The utility model relates to carbon dioxide manufacturing technical field provides a kind of for carbon dioxide production's adsorption tower drying system to handle original carbon dioxide gas, and original carbon dioxide gas refers to the gas with moisture and alcohol after not passing through pre rectification tower rectification treatment, including the first adsorption tower and second adsorption tower of the first heating regeneration component, second heating regeneration component being set respectively, first adsorption tower and second adsorption tower are connected in parallel between liquefier and pre rectification tower;First heating regeneration component and second heating regeneration component all include the molecular sieve of array setting and adsorbent fixed between adjacent molecular sieve, and the heating regeneration process in first adsorption tower and second adsorption tower is independent of each other.The utility model is according to the process of " one open one spare " independent participation handles original carbon dioxide gas, and alcohol removal water in a adsorption tower, not only simplify the treatment process before carbon dioxide gas liquefaction, and improve the alcohol removal efficiency of adsorption tower.

The present application relates to a process for producing synthetic ammonia by using hydrogen-containing tail gas, comprising the following steps: S1: sodium cyanide tail gas is pressurized, then heated and water-cooled. S2: the impurity-removed tail gas is desulfurized. S3: the desulfurized tail gas is mixed with chlor-alkali tail gas, the mixed gas is heated and deoxidized. S4: the deoxidized tail gas is pressurized and enters a PSA (pressure swing adsorption) device for pressure swing adsorption treatment, obtaining high-purity hydrogen. In the PSA device, dehydrating, carbon dioxide, methane, carbon monoxide and nitrogen adsorbents are sequentially arranged. The carbon dioxide adsorbent is activated carbon modified by carbonate and strong alkali, and the nitrogen adsorbent is 13X zeolite molecular sieve modified by Na + and Ba 2+ and Ca 2+ ion exchange. S5: nitrogen reacts with the high-purity hydrogen obtained in step S4 to generate ammonia. The present application can improve the adsorption capacity of the adsorbent for impurity gas, thereby reducing the replacement frequency of the adsorbent, prolonging the service period and service life of the adsorbent, and improving the production efficiency.

The utility model discloses an acetylene production generator which comprises a generator body, a bottom plate is arranged at the bottom of the generator body, and the generator body is connected with the bottom plate through a buffer structure. The device is reasonable in structure and novel in design, when the whole device is placed, generated impact force can drive the supporting columns to contract in the sleeves through the buffer springs so as to be effectively relieved, the impact force is completely released through the counter-acting force of the buffer springs, and therefore the generator body is effectively protected, and the service life of the generator body is prolonged. The problem that an existing device lacks a buffering device and can damage a generator body during placement is solved, after the device is placed, a lead screw is rotated and driven to move, so that the bottom end of the lead screw is rotationally installed in a threaded hole, a fixing block is fixed, the position of a supporting column is fixed, vibration generated during work of the device is avoided, and the service life of the device is prolonged. And therefore, the device is prevented from being damaged due to vertical shaking.

The present disclosure relates to the recycling of acrylonitrile butadiene styrene (ABS) waste. The present disclosure relates to methods for recycling ABS waste. For example, the present disclosure relates to methods of recycling ABS waste by recovering styrene acrylonitrile polymer (SAN), optionally by molecular weight (MW). The present disclosure relates to a recycled SAN obtained from ABS waste and articles comprising the recycled SAN.

Disclosed herein are methods for pyrolysis of plastic feedstock comprising post-consumer and / or post-industrial plastics. In various implementations, the methods include directing the plastic feedstock into an internal volume of a reactor vessel, and pyrolyzing the plastic feedstock in the internal volume of the reactor vessel.

The present invention provides a carbon dioxide capture device and a carbon dioxide capture method that can efficiently capture carbon dioxide while suppressing the energy required for carbon dioxide capture. [Solution] A carbon dioxide recovery device 10 circulates an absorbent liquid between an absorption tower 11 and a regeneration tower 12 via a rich liquid supply pipe 13 and a lean liquid supply pipe 14, allowing carbon dioxide to be absorbed by the absorbent liquid in the absorption tower 11 and recovered in the regeneration tower 12. The device includes a heating means (heat pump) 33 that heats the absorbent liquid, which is supplied to the regeneration tower 12 via the rich liquid supply pipe 13 after absorbing carbon dioxide in the absorption tower 11, through heat exchange with a heat transfer medium. The heating means 33 is set to processing conditions that cause carbon dioxide to be released from the absorbent liquid.

This utility model discloses a leakage-preventing chemical reagent and auxiliary agent filling device, belonging to the technical field of chemical reagent and auxiliary agent processing equipment. It includes a frame, with several peristaltic pumps mounted on the front side of the frame. The inlets of these peristaltic pumps are connected to the inside of the auxiliary agent container via pipes, and the outlets are connected to different filling tubes via pipes. Each filling tube is connected to a rear lifting plate via a support plate. The lifting plate is mounted on columns on both sides, and a top plate and a bottom plate are installed between the columns. A lifting drive cylinder connects the upper surface of the bottom plate and the lower surface of the lifting plate. A transport trough is provided below each filling tube. This auxiliary agent filling device, by designing an openable and closable sealing component at the contact point between the filling tube and the bottle opening of the auxiliary agent, blocks and isolates any overflowing toxic auxiliary agents, preventing leakage during the filling process and ensuring a safe environment for auxiliary agent production in the factory.

The application discloses a returning material unit, and a double-fluidized bed reaction device applying the unit. The returning material unit is arranged between a combustion chamber and a gasification chamber in the double-fluidized bed reaction device and is used in a hydrogen production process of biomass raw materials. The returning material unit comprises a returning material chamber which is communicated with the gasification chamber or the combustion chamber through a feeding pipe. A first air distribution cavity is arranged at the lower part of the returning material chamber. A loosening chamber is arranged to receive bed material particles from the combustion chamber or the gasification chamber and to block gas. The middle and upper parts of the loosening chamber are separated from the returning material chamber through a partition plate. The bottom plate of the loosening chamber is arranged to be inclined towards the partition plate. A second air distribution cavity is arranged at the lower part of the loosening chamber. The returning material unit can reduce the possibility of gas channeling between hydrogen-rich synthesis gas and flue gas and reduce the fluidized dead zone while ensuring the hydrogen production rate. The structure design of the gasification chamber of the double-fluidized bed reaction device can make the solid particles realize local core-annular flow circulation, and the heat transfer between the bed material particles and the biomass particles is enhanced.

This utility model discloses a reactor for the production of ethylene bis(tetrabromophthalimide), comprising a reactor body, a stirring motor, a servo motor, an internal exhaust valve, and an external exhaust valve. The stirring motor and a discharge pipe are respectively installed at the upper and lower ends of the reactor body. A square rod is fixedly connected to the lower end of the output shaft of the stirring motor, and a stirring paddle is fixedly installed on the lower outer wall of the square rod. A support sleeve is fixedly installed through the reactor body surface on the side of the stirring motor, and a servo motor is installed on the upper end of the support sleeve. A powder pipe and a feeding pipe are respectively installed on the reactor body surfaces on the front and rear sides of the stirring motor, and a powder sleeve and a feeding sleeve are respectively fixed to the inner wall of the cover plate on the side of the powder pipe and the feeding pipe. This reactor for the production of ethylene bis(tetrabromophthalimide) facilitates the suppression of powder diffusion, thereby preventing powder from filling the reactor and affecting the reaction of the materials, thus improving the practicality of the device.

The utility model discloses: a kind of water pressure autoclave, comprising: the reaction kettle body for installation, the mounting cover stably installed on the upper end of reaction kettle body;Further comprising: the mounting cover is provided with uniform stirring mechanism, wherein stirring mechanism includes first gear, second gear, first stirring rod, third gear and second stirring rod, the left side of first gear is connected with second gear, and the inside of second gear is connected with first stirring rod, and the right side of first gear is connected with third gear, and the inside of third gear is connected with second stirring rod;Second sealing ring, the lower end of second sealing ring is provided with sealing structure.The utility model relates to high-pressure kettle technical field, the water pressure autoclave, it is convenient to mix inside material of water pressure autoclave sufficiently evenly, it is convenient to seal protection to water pressure autoclave, ensure that inside material can effectively react, it is convenient to heat evenly to inside reaction material of water pressure autoclave.

The utility model provides a device for slowing down butadiene polymer generation under low load of butadiene device, through increasing the pipeline of butadiene product entering the light removal tower and water scrubbing tower on butadiene product line, butadiene medium feed load becomes larger, the flow rate in the tower becomes larger, the separation efficiency of tray is increased, the polymerization inhibition effect of polymerization inhibitor is increased, the operation parameter is close to the design optimal parameter, can effectively avoid high concentration butadiene on butadiene heavy removal tower lower section, butadiene water scrubbing tower, light removal tower butadiene polymer generation, avoid the butadiene polymer generation due to butadiene polymer generation causes the tray equipment blockage, causes the non - scheduled parking and butadiene polymer generation after the rise and crack equipment, lead to the flammable and explosive butadiene medium exudation caused by fire and explosion accident.

A dual-mode process and system to produce sustainable syngas and downstream products thereof are provided.

The utility model relates to sodium methoxide preparation technology field of alkali method, proposes a kind of production equipment for sodium methoxide preparation of alkali method, including support frame, the right lower end inner wall of support frame is installed connection has positive and negative motor, and the output of positive and negative motor is connected with the middle shaft installation of driving gear, the lower end of blanking is connected with cooling structure by mechanical seal, electric telescopic handle is installed on the upper end inner wall of mounting bracket, cooling structure includes installation cylinder, cooling bar and cooling leaf, the upper end of elastic collection bag is integrally fixed connection with the lower end inner wall of inlet, the front and rear ends of roll pressure wheel are integrally fixed connection with adjusting gear. The production equipment for sodium methoxide preparation of alkali method, when producing preparation to sodium methoxide solution, improve the efficiency of sodium methoxide solution stirring dissolution, control the temperature inside reaction device stably simultaneously, avoid the occurrence of safety accident, improve the security of production.

This utility model relates to the technical field of rubber pyrolysis carbonization furnaces, specifically a rubber pyrolysis carbonization furnace, including a carbonization furnace body, a feeding shell, a sealing cover, and a sealing assembly. The feeding shell is connected to the welded joints on the carbonization furnace body, and the sealing cover is installed on the sliding part of the feeding shell. In this utility model, the rubber pyrolysis carbonization raw materials inside the carbonization furnace body, the pushing box, and the sealing shell are slidably pushed to the middle of the carbonization furnace body by the pushing disc and the fastening ring. This allows for centralized processing of the rubber pyrolysis carbonization raw materials. The raw materials inside the rubber pyrolysis carbonization furnace are concentrated together, and then squeezed by the hydraulic pressure of the pushing disc and the fastening ring, reducing the area occupied by the rubber pyrolysis carbonization raw materials and expanding the filling space of the carbonization furnace body, the pushing box, and the sealing shell. This increases the feeding capacity of the carbonization furnace body, the pushing box, and the sealing shell, facilitating centralized heat treatment of some rubber pyrolysis carbonization raw materials and improving the efficiency of rubber pyrolysis carbonization.

The utility model provides a high -purity oxygen multistage adsorption drying tower relates to drying tower technical field, including drying tower main part, the top of drying tower main part is connected with the anti -leakage subassembly, the anti -leakage subassembly includes fixed plate, the top of fixed plate is connected with the air inlet, the surface of drying tower main part is opened with seal groove, the inside of seal groove is provided with sealing washer, the surface ring of fixed plate is connected with six groups of lengthening bolt, the outside surface ring of drying tower main part is connected with four groups of support frame. In the utility model, after the fixed plate is fixed through the lengthening bolt, can rotate the handle, make the moving block can move to the forward side, realize the fixation of fixed plate to the lengthening bolt and the moving block double fixed mode, improve the sealing effect of drying tower main part, avoid the situation that drying tower main part appears the leakage, thereby influence normal adsorption use problem.

A method including contacting one or more flame retardancy modifiers and a polycarbonate composition comprising one or more reactive polycarbonates having free hydroxyl and / or carboxyl groups in a polycarbonate solvent to form a modified polycarbonate that has flame resistance. The flame retardancy modifiers and the polycarbonate composition may be contacted in a polycarbonate solvent.

The present invention relates to an improved process for producing recycled polyols ("PPU") and recycled amines ("APU") from polyurethane ("PU"), in particular polyurethane waste. PU is hydrolyzed, and a raw product ("RH") comprising an organic phase ("PO"), which typically comprises the main part of the polyols PPU and amines APU that result from the hydrolysis of the PU, and an aqueous phase ("PW") are obtained. At least a part of PO ("PO1") is then separated from RH. Residual water W and amines APU are separated from PO1 by distillation to obtain water vapor V and an amine fraction FA. At least a part PO3 of the remaining organic phase PO2, which typically contains the main fraction of the polyols PPU, is then further purified by stripping, wherein the water vapor V is used as countercurrent stripping gas. Preferably, the distillation of water from PO1 and the stripping step are carried out in the same column K1.

The invention relates to a method for recycling a clarified polyolefin waste comprising the steps of collecting the clarified polyolefin waste which contains a sorbitol clarifier, and introducing an amide clarifier into the clarified polyolefin waste to form a recycled polyolefin. It also relates to the recycled polyolefin which comprises the amide clarifier and the clarified polyolefin waste which contains the sorbitol clarifier; and to a use of a amide clarifier for reducing the haze of the clarified polyolefin waste which contains the sorbitol clarifier after recycling of the clarified polyolefin waste.

A method of production of hydrocarbon-containing resins starting from a charge comprising rubber chips comprises at least one pyrolysis step and a resin synthesis step.

This invention discloses a method for preparing lightweight calcium carbonate from dolomite, comprising the following steps: crushing, grinding, and calcining raw dolomite to obtain lightly calcined dolomite powder; subjecting the lightly calcined dolomite powder to acid leaching to obtain an acid leaching solution; adjusting the pH of the acid leaching solution to 12.3-12.6 with alkali, then introducing carbon dioxide to bring the pH to 7.6-8.4, followed by solid-liquid separation to obtain lightweight calcium carbonate. This invention, through calcination, acid leaching, and carbonation of dolomite, produces lightweight calcium carbonate that not only meets the requirements for precipitated calcium carbonate for plastics in the standard "General Industrial Depositional Calcium Carbonate," but also meets the requirements for calcium carbonate for rubber, coatings, and papermaking, thus possessing significant application value and broad prospects.

The utility model relates to phenol crystallization technical field, specifically disclose a kind of phenol crystallization tower structure of continuous feeding is convenient, including crystallization tower shell, the upper portion of crystallization tower shell is placed with storage bucket, and closed assembly is installed in the top wall of crystallization tower shell.Closed assembly is used to seal when storing bucket is carried out to the inside of crystallization tower shell and is fed, closed assembly can avoid leakage when feeding, flow control assembly is installed in the lower portion of storage bucket, and flow control assembly is used to control the solution in the inside of storage bucket slowly flows into the inside use of crystallization tower shell, flow control assembly can avoid when installing storage bucket, its inside solution spills to outside.Flow control assembly can be achieved in the process of using storage bucket to inject solution in the inside of crystallization tower shell whole closed, further can avoid solution leakage to cause harm to staff, solved when solution delivery uses pipeline delivery when pipeline is too long, and early crystallization is prone to occur.

The application discloses a biomass and coal co-pyrolysis reactor, which comprises a reactor body, wherein the reactor body comprises a biomass pyrolysis cylinder and a coal pyrolysis cylinder which are communicated with each other, the biomass pyrolysis cylinder is connected below the coal pyrolysis cylinder, the cross-sectional area of the biomass pyrolysis cylinder is smaller than that of the coal pyrolysis cylinder, the bottom of the biomass pyrolysis cylinder is provided with a lifting gas inlet, the gas generated by the coal pyrolysis is suitable to enter the reactor body through the lifting gas inlet, the top of the coal pyrolysis cylinder is provided with a product outlet, at least one biomass feeding port is arranged on the side wall of the biomass pyrolysis cylinder, at least one coal feeding port is arranged on the side wall of the coal pyrolysis cylinder, and a plurality of heat accumulating radiation pipes are arranged in the biomass pyrolysis cylinder and the coal pyrolysis cylinder in a spaced mode. According to the biomass and coal co-pyrolysis reactor, hydrogen in the biomass can be easily transferred to the oil gas in the coal pyrolysis cylinder, and the biomass and the coal pyrolysis can reach a synergistic effect.

The application belongs to the technical field of mixing, and specifically discloses a kind of inhibitor online premixing device for stability urea production, including mixing tank, the top of mixing tank is fixedly installed with stirring motor, the output shaft end of stirring motor is fixedly connected with stirring paddle, stirring paddle is rotatably connected in the inside of mixing tank, and the inside of mixing tank is fixedly installed with partition plate;Feeding assembly is used for quantitative feeding of urea and inhibitor, and feeding assembly is connected with mixing tank and stirring paddle;Discharge assembly is used for discharging urea and inhibitor mixed solution after premixing, and discharge assembly is connected with mixing tank and stirring paddle.Through the setting of feeding assembly, in the process that urea is discharged into the inside of mixing tank through feeding assembly, inhibitor will be discharged into the inside of mixing tank according to fixed proportion together, and makes inhibitor in dispersed state and mixes with urea, avoids caking, improves the mixing efficiency of urea and inhibitor, and reduces mixing time.

The utility model discloses a polyaluminum chloride raceway pond multi-stage shunting reaction device which comprises a raceway pond body, a baffle is arranged in the raceway pond body, a driving paddle is connected between the raceway pond body and the baffle through a rotating shaft, a driving motor is installed at the end of the rotating shaft, and the driving motor is connected with the baffle. The runway pond comprises a runway pond body, a multi-stage splitter plate is arranged in the runway pond body, a side plate is mounted on the side surface of the multi-stage splitter plate, a stirring paddle is mounted on the lower surface of the side plate in a penetrating manner, and a first turbine is mounted on the surface of the stirring paddle. The driving paddle arranged in the runway pond can enable a polyaluminum chloride solution in the runway pond body to integrally flow under the driving of the driving motor, and the stirring paddles on the multi-stage splitter plate can locally stir the solution in each stage of splitting area under the action of the stirring motor, so that the solution in each stage of splitting area can be partially stirred in a manner of combining the integral flowing and the local stirring, and the solution in each stage of splitting area can be completely stirred. All components in the solution can be fully mixed, and the reaction efficiency and uniformity are improved.