1593results about "Reagents" patented technology

The present application relates to hydrogen production technology field, especially to a kind of methanol hydrogen production method, comprising the following steps: S10: methanol water is heated and vaporized to obtain methanol water vapor;S20: methanol reforming reaction obtains hydrogen mixture gas;S30: after cooling treatment to hydrogen mixture gas, through water washing tower absorption unreacted methanol water, then, adjust the relative humidity and temperature of hydrogen mixture gas;S40: hydrogen mixture gas is input into carbon dioxide absorption tower to remove carbon dioxide;S50: after removing carbon dioxide, product hydrogen is obtained and input hydrogen tank storage to supply user end.The above-mentioned methanol hydrogen production method, by methanol water vapor reforming hydrogen treatment, obtains hydrogen mixture gas.Again, hydrogen mixture gas is purified to obtain product hydrogen with very low carbon monoxide content, with raw material easy to transport, the hydrogen purity of output is high, equipment construction cost is low, and energy consumption is low and the like advantages, reach the purpose of expanding hydrogen application range.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation / energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

To provide a method for fixing carbon dioxide by which bubbles of carbon dioxide introduced into a solution can be made fine without increasing energy consumption.SOLUTION: A carbon dioxide fixation method comprising a precipitation step of introducing a gas containing carbon dioxide into a carbon dioxide fixation solution in which calcium ions are eluted to generate bubbles of the gas containing carbon dioxide in the carbon dioxide fixation solution, thereby reacting the calcium ions eluted in the carbon dioxide fixation solution with carbon dioxide to precipitate calcium carbonate, wherein the carbon dioxide fixation solution is an aqueous solution in which calcium ions are eluted in an aqueous solution of methylparaben.SELECTED DRAWING: Figure 1

The invention discloses a phosphorus trichloride production reaction kettle with a defoaming structure, and relates to the technical field of reaction kettles. According to the phosphorus trichloride production reaction kettle with the defoaming structure, through cooperation of the obliquely-installed sawtooth plates and the protruding strip rings, during rotation, the sawtooth plates drive foam on the liquid level to move towards the periphery, in the movement process, the foam on the liquid level is separated from the protruding strip rings, and the foam on the liquid level is removed. The sawteeth at the top of the sawtooth plate are in contact with accumulated foam, so that part of the foam is broken, the unbroken foam outwards impacts the inner wall of the convex strip ring under the action of centrifugal force, so that the foam is in contact with the convex strips uniformly arranged on the inner wall of the inner convex ring, and compared with a smooth inner wall of a traditional reaction kettle, the contact area is reduced when the convex strips of the inner convex ring are in contact with the foam; and the pressure during impact is increased, so that the foam is broken under higher pressure, and the defoaming effect is improved.

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves pyrolyzing one or more waste plastics into various pyrolysis products, including a carbon solids-containing pyrolysis residue, and then subjecting the pyrolysis residue to partial oxidation gasification to thereby form a syngas composition.

An insulation component manufacturing method for manufacturing flow-tight, light-weight, sustainable insulation components for vehicles, the insulation component having at least one tufted textile top cloth, a film as the steam-and air-tight flow-tight layer and an absorber layer from a nonwoven having fibers that run vertically upwards relative to the surface, and is manufactured by means of at least one steam vacuum tool. Also, a flow-tight, light-weight, sustainable insulation component for vehicles.

The utility model provides chemical reagent additive filling equipment, which relates to the technical field of chemical reagent additives, and comprises a filling assembly, a clamping moving assembly is arranged at the bottom of the filling assembly, a mixing assembly is arranged in the filling assembly, the filling assembly comprises a filling tank, the bottom of the filling tank is connected with a blanking pipe, and the blanking pipe is connected with a feeding pipe. And the clamping moving assembly comprises a moving groove, a moving block is installed in the moving groove, and a first air cylinder is connected to the top of the moving block. An electric telescopic column extends to push a second air cylinder and is matched with the second air cylinder to stretch out and draw back at the same time, so that a clamping plate clamps and fixes a filling bottle, then a first air cylinder shrinks to drive a moving block to move in a moving groove, and a bottle neck of the filling bottle is clamped in a clamping ring; and the filling bottle is always kept at a correct position in the filling process, so that the chemical reagent additive is accurately injected into the bottle, the leakage of the chemical reagent additive is avoided, and the waste is reduced.

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu / lb, 13,000 Btu / lb, 14,000 Btu / lb, or 14,500 Btu / lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and / or strength that derive from the feedstock, heat rate, and additives.

A hydrogen production system for producing a hydrogen gas product includes a geologic hydrogen source configured to provide a feedstock comprising hydrogen, nitrogen, and helium and purification equipment comprising two or more of: a pressure swing adsorption (PSA) device; a guard bed; a separation membrane; a reactive membrane; or a cryogenic separation device. The purification equipment is configured to receive the feedstock from the geologic hydrogen source and produce a hydrogen gas product, and production of the hydrogen gas product exhibits a carbon intensity score less than 3.0 kg CO2 eq / kg H2.

The invention relates to a method for isolating carbon dioxide from an air flow, wherein the method comprises at least the following steps: a) providing an aqueous solution of a carbon dioxide absorption agent, wherein the carbon dioxide absorption agent comprises cations from the first main group of the periodic system; b) passing a carbon-dioxide-containing air flow through the solution provided in method step a), wherein at least one part of the carbon dioxide from the air flow is bonded to the carbon dioxide absorption agent and the air flow is enriched with carbon dioxide; c) introducing the aqueous solution from step b) or an aqueous solution comprising the carbon dioxide bonded to the carbon dioxide absorption agent into a central chamber of an at least three-chamber electrolysis cell formed by an anode chamber, cathode chamber and at least one central chamber arranged between the anode chamber and the cathode chamber, wherein the three-chamber electrolysis cell has a membrane that is selective for monovalent cations; and electrolysing the aqueous solution, releasing at least one part of the carbon dioxide.

This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu / lb, 13,000 Btu / lb, 14,000 Btu / lb, or 14,500 Btu / lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and / or strength that derive from the feedstock, heat rate, and additives.

The invention relates to the field of organic chemical synthesis, in particular to a quinazolinone compound synthesized by carbon dioxide and a preparation method of the quinazolinone compound. According to the preparation method for synthesizing the quinazolinone compound from carbon dioxide, carbon dioxide, a 2-aminobenzamide compound and aryl halide are taken as raw materials, and are subjected to a heating reaction in the presence of a palladium metal catalyst, a ligand, a reducing agent, alkali and an organic solvent to generate the quinazolinone compound. The mechanism is as follows: carbon dioxide forms an intermediate A under the conditions of alkali and a reducing agent, aryl halide and the intermediate A form a carbonyl metal compound B under the action of a palladium metal catalyst, and then the carbonyl metal compound B reacts with a 2-aminobenzamide compound under the action of the alkali and the reducing agent to obtain the quinazolinone compound. The catalyst system has universality to various types of 2-aminobenzamide and derivatives and aryl halides thereof, the raw materials are wide in source, cheap and easy to obtain, and the reaction process is simple and controllable.

The utility model discloses a sulfur burning furnace high-temperature resistant sealing leakage repair structure, which comprises a sulfur burning furnace body, a fixed base and a repair assembly, the bottom end of the sulfur burning furnace body is provided with the fixed base, the right end of the sulfur burning furnace body is communicated with a feeding pipeline, and the joint of the feeding pipeline and the sulfur burning furnace body is provided with the repair assembly; and a repairing base is installed on the fixing bolt through a fixing nut, a leakage detection sensor is installed on the inner wall of the repairing base, a plugging ring is installed in the repairing base in a sliding mode, and a pushing device is installed at the right end of the plugging ring. The problems that when a sulfur burning furnace in the prior art is used, one end of a liquid sulfur atomizing spray gun penetrates through a furnace body and then extends into the furnace body, so that leakage risks exist at the joint of the liquid sulfur atomizing spray gun and the feeding end of the furnace body, an effective leakage repairing structure is not arranged, and when leakage occurs at the joint, the sulfur burning furnace in production is shut down, and the production efficiency is low are solved. And large economic loss is easily caused.

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.

An enzymatic bioremediation reactor device for the accelerated composting of lignocellulose material, consisting of a sealed, insulated container, a mechanical pretreatment unit and an automated laccase enzyme supply system.

Method for producing a gas enriched in carbon dioxide from a feed synthesis gas comprising at least one condensable component and in particular hydrogen, characterized in that the method further comprises: a step referred to as a desaturation step during which at least a portion of the condensable component contained in the feed synthesis gas is, upstream of said pressure swing adsorption separation unit, condensed by cooling to a temperature below 10° C., in particular below or equal to 5° C., and separated, producing said desaturated synthesis gas and at least one condensate; the feed synthesis gas exchanging heat with the desaturated synthesis gas so as to heat said desaturated synthesis gas.

The utility model discloses a sulfonation reaction device for pigment preparation, and relates to the technical field of pigment preparation devices. The sulfonation reaction device for pigment preparation comprises a basic support, a reaction container, a guide rail frame, a movable frame, an upper cover, a lifting unit, a supporting rod and a depth adjusting unit. According to the sulfonation reaction device for pigment preparation, through the design of the lifting unit, separation operation of the upper cover and the reaction container is convenient, when a stirring structure and a temperature sensor need to be cleaned or maintained, only the lifting unit needs to be started, the stirring structure and the temperature sensor can be synchronously driven to rise, cleaning or maintenance work can be conducted, operation is convenient, and practicability is high. Meanwhile, the depth adjusting unit is arranged to adjust the position of the supporting rod, so that the depth of the temperature sensor in the reaction container can be conveniently adjusted in real time, temperature information of various depths can be monitored in real time, it is ensured that the reaction temperature condition is easy to control and is kept stable, and the use requirement is met.

The utility model discloses a device for preparing and synthesizing hydrotalcite from carbon dioxide, which comprises a mixing tank used for preparing hydrotalcite, a hydrate introducing assembly used for introducing hydrotalcite preparation solution is arranged on one side of the mixing tank, and a carbon dioxide introducing assembly used for introducing carbon dioxide is arranged in the center of the top of the mixing tank. A collecting tank for collecting a mixed solution is mounted on one side of the bottom of the mixing tank. A hydrotalcite solution is introduced into the mixing tank through the delivery pump, a low-pressure area is formed when the hydrotalcite solution passes through the contraction section, and when the hydrotalcite solution passes through the throat pipe, the flow rate reaches the maximum value, and the pressure reaches the minimum value, so that carbon dioxide gas in the carbon dioxide storage tank can be sucked through the gas inlet pipe; meanwhile, by arranging the anti-backflow assembly, the gas-liquid mixture can be effectively prevented from flowing back, so that the practicability of the gas-liquid mixing device disclosed by the utility model is improved.

The utility model provides a resin preparation device, which belongs to the technical field of resin preparation, aims to solve the problems that a flange bolt is influenced by alternating load, so that the pretightening force is attenuated, the compression amount of a gasket is insufficient, and a connecting interface leaks, and comprises a first reaction kettle and a second reaction kettle arranged on the outer side of the first reaction kettle; the two conveying pipelines are fixedly connected between the discharge port of the first reaction kettle and the feed port of the second reaction kettle respectively; the outer side of the conveying pipeline binding surface is fixedly connected with a connecting flange; a sealing gasket is arranged on the inner side of the connecting flange; the plurality of positioning bolts are circumferentially arranged and are in threaded connection with the inner sides of the connecting through holes of the connecting flanges; the sealing auxiliary mechanism is arranged between the positioning bolt and the connecting flange; the phenomena of leakage of a connection interface and material waste are greatly avoided, the operation stability of the reaction kettle and the performance of the BT resin are ensured, and the safety during preparation of the BT resin is further improved.

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.

To provide a carbon dioxide separation composition which is excellent in carbon dioxide desorption efficiency (desorption amount / absorption amount) and durability to nitrogen oxides, and a method for separating carbon dioxide.SOLUTION: A carbon dioxide separation method includes the step of bringing a gas mixture containing nitrogen oxides and carbon dioxide into contact with an amine compound represented by formula (2), and a carbon dioxide separation composition containing water, thereby enabling the carbon dioxide in the gas mixture to be absorbed. The amine compound absorbs and releases carbon dioxide. The water level is 20-95 wt.% relative to the total amount of the carbon dioxide separation composition.SELECTED DRAWING: None

The invention relates to the technical field of biomass gasification furnaces, and discloses a biomass gasification furnace with a sealed drying system, the biomass gasification furnace comprises a biomass gasification furnace, the lower surface of the biomass gasification furnace is provided with a connecting pipe, and the top of the biomass gasification furnace is provided with a sealing part; the sealing component comprises a fixing plate, the end of the fixing plate is fixedly connected with the surface of the biomass gasifier, the top of the fixing plate is fixedly connected with a hydraulic rod, the telescopic end of the hydraulic rod is fixedly connected with a linkage plate, and the end, away from the hydraulic rod, of the linkage plate is fixedly connected with a lifting disc. When a hydraulic rod moves, a linkage plate is connected with a lifting disc to drive a sealing disc to move upwards, when the sealing disc moves, the sealing disc is separated from the inner wall of the biomass gasification furnace, and at the moment, biomass raw materials can be put into the biomass gasification furnace to be subjected to drying combustion treatment; and the hydraulic rod moves downwards to push the sealing disc to enter the biomass gasification furnace, and the sealing disc is used for sealing the top of the biomass gasification furnace.

The invention relates to potassium superoxide composite particles as well as a dry-method preparation process and a preparation system thereof, and belongs to the technical field of superoxide. The composite particle comprises a core and a shell layer, the core is a mixture of potassium superoxide and bentonite, the shell layer is a calcium hydroxide wrapping layer wrapping the core, and the core and the shell layer form a core-shell structure; the process comprises the steps of dry powder mixing, dry granulation and size stabilization, microwave strengthening and surface wrapping. The system comprises a raw material pretreatment device, a dry powder mixing device, a dry rolling granulation device, a microwave strengthening treatment device and a surface wrapping device. A dry granulation process is adopted, the risk that potassium superoxide and water are subjected to violent reaction is fundamentally eliminated, bentonite is used as an inert matrix, the effects of diluting and stabilizing potassium superoxide are achieved, the sensitivity of potassium superoxide to external stimulation is reduced, and the particle product is excellent in comprehensive performance.

The present invention relates to a method of preparing a heterogeneous linear carbonate, the method including performing a transesterification reaction of dimethyl carbonate (DMC) and ethanol (EtOH) in the presence of a catalyst, wherein the catalyst is one or more selected from the group consisting of lithium methoxide (LME), lithium ethoxide (LEE), sodium methoxide (SME), sodium hydroxide (NaOH), and a mixture thereof, and the catalyst is input in a state of being dissolved in a sulfoxide-based solvent.

The invention belongs to the technical field of reaction kettles, and discloses a high-efficiency polymerization reaction kettle for producing a polycarboxylic acid water reducer, the high-efficiency polymerization reaction kettle comprises a reaction kettle body, a stirring plate I and a stirring plate II, a composite rotating part is rotatably mounted in the reaction kettle body, the stirring plate I and the stirring plate II are fixedly connected to the outer surface of the composite rotating part, and the stirring plate I and the stirring plate II are fixedly connected to the outer surface of the composite rotating part. A midway injection mechanism is arranged in the composite rotating part, the composite rotating part rotates around the midway injection mechanism in the composite rotating part, and the midway injection mechanism is used for injecting the material liquid into the mixed liquid in the stirring reaction period. According to the invention, the key additive is directly sprayed to the specified depth in the reaction liquid instead of being only added on the liquid surface, so that the problem of over-high local concentration is avoided, the material can be instantly and uniformly dispersed in the reaction system, the stability and controllability of the reaction are greatly improved, the high consistency of the product performance is ensured, and the product quality is improved. Accurate, multi-point and deep injection of materials in the reaction process is achieved.

This technology provides a flow path that allows the electrolyte to be circulated according to its state. [Solution] The carbon dioxide concentrator comprises an absorption unit that absorbs carbon dioxide into an electrolyte, an electrochemical cell that generates carbon dioxide from the electrolyte, and a passage for flowing the electrolyte. The electrochemical cell comprises an anode, a cathode, an electrolyte membrane provided between the anode and the cathode, a first liquid chamber provided between the anode and the electrolyte membrane and supplied with the electrolyte, and a second liquid chamber provided between the electrolyte membrane and the cathode and supplied with the electrolyte. The passage includes a first passage that sends the electrolyte discharged from the second liquid chamber to the absorption unit and a second passage that returns it to the second liquid chamber, and the flow path of the electrolyte can be switched between the first passage and the second passage.

Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and / or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3 olefin / paraffin mixture is recovered from the hydrocracking unit. The C3 paraffins and C3 olefins are separated into different fractions with the C3 olefin fraction passed to a propylene polymerization reactor, and the C3 paraffin fraction passed optionally to a dehydrogenation unit to produce additional propylene. A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.

The present invention relates to a vehicle tyre (1), the tyre comprising at least one sidewall (2) with at least one high-contrast sidewall element (3) consisting of a texture having a first luminosity L*1 of at least 1 and at most 15, wherein any adjacent sidewall surface portion (21) has a second luminosity L*2 of at least L*1+5. The invention discloses a rubber composition of the sidewall (2) that exhibits a good trade-off between tear strength and rolling resistance. According to the invention, the weight ratio of the reinforcing filler content to the plasticiser content is at most 4.50, the sum of the reinforcing filler content and the crumb rubber content is at least 30 phr and at most 70 phr, and the weight ratio of the crumb rubber content to the reinforcing filler content is at least 0.20 and at most 2.50.

The utility model belongs to the technical field of oxygenerators, and discloses an adsorption tower and a pressure swing adsorption oxygenerator, the adsorption tower comprises a tower body and a diversion assembly, the tower body is internally provided with an adsorption cavity, two ends of the tower body are respectively provided with an air inlet and an air outlet which are communicated with the adsorption cavity, and the diversion assembly is arranged on the tower body. The flow guide assembly comprises a flow guide body located in the adsorption cavity and a pipe body which is arranged on the flow guide body and extends out of the adsorption cavity through the air inlet, an air containing cavity is formed in the flow guide body, and a plurality of air uniformizing holes communicated with the air containing cavity are formed in the peripheral side of the flow guide body. And on the other hand, the flow velocity of the clean compressed air passing through the molecular sieve is reduced, so that the adsorption effect of the molecular sieve on nitrogen and carbon dioxide in the clean compressed air is improved, and the oxygen production purity of the pressure swing adsorption oxygen generator is further improved.

The utility model discloses a tetrachlorophthalic anhydride production chlorination kettle iodine adding device, which comprises an upper iodine adding valve, a lower iodine adding valve and an iodine solution transfer tank, the iodine solution transfer tank is arranged between the upper iodine adding valve and the lower iodine adding valve, the outer side of the iodine solution transfer tank is communicated with two communicating pipes, one ends of the two communicating pipes far away from the iodine solution transfer tank are communicated with a communicating box, and the communicating box is communicated with the upper iodine adding valve and the lower iodine adding valve. The end, away from the communicating pipe, of the communicating box communicates with a pressure-regulating external pipe. The effective volume between the upper iodine adding valve and the lower iodine adding valve can be increased through the arranged iodine solution transfer tank, and the pressure difference among the upper iodine adding valve, the iodine solution transfer tank and the lower iodine adding valve is adjusted in a matched manner, so that two kilograms of iodine can be added at one time, the upper iodine adding valve and the lower iodine adding valve do not need to be repeatedly opened and closed, the operation becomes simple, the labor intensity is reduced, and the production efficiency is improved. And the iodine is added in a pressure difference manner, so that the unorganized emission of harmful gas in the kettle is avoided, the risk that the iodine is suddenly flushed out is greatly reduced, and the personal safety is guaranteed.