60 results about "Chemical breakdown" patented technology

A downhole wellbore filtercake breaker is disclosed comprising one or more breaker chemicals (or activators thereof) capable of being activated with radiation to form one or more breaker reaction products which in turn are capable of reacting with the filtercake to chemically break down the filtercake. There is also disclosed a conventional reservoir drilling fluid modified to include an inactive, delayed, or sequestered breaker chemical or an activator thereof, wherein the breaker chemical (or activator) may be activated directly or indirectly by radiation, such as, microwave, visible, uV, soft x-ray, or other electromagnetic radiation. Also disclosed are methods for creating these filtercakes, and then breaking them via deploying a source of radiation that can be energized proximate to the filtercake. The breaker may be regenerated downhole by reaction with the filtercake breakdown products, and subjected again to a source of radiation to continue the breakdown of filtercake.

A process of chemically recycling polyurethane-containing scrap. Polyurethane-containing scrap is subjected to a chemolysis reaction to produce chemolysis polyol products. The chemolysis polyol products are used as initiators in a reaction with alkylene oxide to produce oxyalkylated polyols for preparing polyurethanes.

A power generation system (10) and method of operating a power generation system (10). An exemplary power generation system (10) shown in FIG. 1 includes a gasification system (2) for generating a supply (33) of a first gas comprising hydrogen and a supply (39) of a second gas comprising carbon monoxide based on a chemical breakdown of hydrocarbons in a melt (17). A component system (3) produces a supply of steam (99) by reacting one of the streams of gas and a steam turbine (120) generates mechanical power by expanding the steam (99). In an associated method, a melt (17) is created in a gasifier (12) which then receives a hydrocarbon source (22) to generate a continuous supply (33) of a first gas comprising hydrogen while increasing concentration of dissolved carbon in the melt (17). Hydrogen present in the first gas is supplied to a first combustor (90). A continuous supply (39) of a second gas comprising carbon monoxide is generated with carbon present in the melt (17). Carbon monoxide present in the second gas is supplied to a second combustor (80).

The invention relates to a metallurgy method of metal sulfide M1S; in the method, ionic liquid M2X is taken as electrolyte, metal sulfide is taken as a solid-state cathode, or the powder of metal sulfide added with electronic conduction matters or lumps and metal current collectors are compounded for being used as the solid-state cathode, graphite or inertia anode is taken as an anode, the electrolyte is carried out in inert atmosphere or air, the electrolyte temperature is controlled at 120-780 DEG C, the electrolyte time is controlled to lead the electrolysis electric quantity to reach theory needed theory electric quantity and above, the metal sulfide is decomposed into metal products and simple substance S by electrochemistry. The method has simple process, low energy consumption, high additional value of the product, wherein the prepared metal materials such as tantalum powder, tantalum, porous iron and other nanometer metal powder materials or superfine metal powder materials or porous metal materials can be directly used as hydrogen storage materials, battery materials, capacitor materials and the like or as the raw material for powder metallurgy and the like.

This invention relates to a generic process for producing a refractory oxide which comprises reacting liquid water with: at least one metal fluoride reactant; or at least one metal fluoride reactant and at least one metal oxide reactant; or at least one metal oxide reactant and an aqueous hydrogen fluoride solution, to produce either a colloidal mixture or a solution; drying either the colloidal mixture or solution; heating the dried product to produce a solid state metal hydroxyfluoride; heating the hydroxyfluoride to a temperature at which it chemically decomposes into a cationically-homogeneous and nanostructured solid state metal oxyfluoride; and performing one of the following heating steps: (i) to a solid state decomposition-temperature where the oxyfluoride chemically decomposes into a refractory oxide; or, (ii) to a molten state decomposition-temperature where the oxyfluoride chemically decomposes into a refractory oxide; or, (iii) to a vapor state decomposition-temperature where the oxyfluoride chemically decomposes into a refractory oxide.

A modular process for organosolv fractionation of lignocellulosic feedstocks into component parts and further processing of said component parts into at least fuel-grade ethanol and four classes of lignin derivatives. The modular process comprises a first processing module configured for physico-chemically digesting lignocellulosic feedstocks with an organic solvent thereby producing a cellulosic solids fraction and a liquid fraction, a second processing module configured for producing at least a fuel-grade ethanol and a first class of novel lignin derivatives from the cellulosic solids fraction, a third processing module configured for separating a second class and a third class of lignin derivatives from the liquid fraction and further processing the liquid fraction to produce a distillate and a stillage, a fourth processing module configured for separating a fourth class of lignin derivatives from the stillage and further processing the stillage to produce a sugar syrup.

The invention discloses an internal discharge detection method of sulfur hexafluoride gas insulation equipment, comprising the following steps: A, providing a SF6 (sulfur hexafluoride) gas sample in the insulation equipment to be detected; B, after the sample is introduced in, detecting conventional ingredients in the gas sample by a TCD (thermal conductivity detector); C, After the TCD detects that SF6 almost flows out, inputting the sample into a FPD (flame photometry detector); D, detecting a trace product decomposed by SF6 via the FPD; and E, according to the content and the variation condition of the tract product, judging whether the SF6 gas insulation equipment has local discharge defects. In the invention, the internal insulation condition of electric equipment can be judged according to the chemical decomposer of SF6 gas. In the invention, a detection means for the internal insulation situation of GIS (Gas Insulated Switchgear) equipment is added, equipment station information is enriched, the internal discharge faults of GIS can be found as quickly as possible,equipment operation reliability is improved, a fault air chamber can be positioned quickly and accurately after discharge faults burst in GIS, and maintenance efficiency is improved.

The invention discloses a ternary CoFeCr hydrotalcite nanorod and a preparation method and application thereof. The preparation method comprises the steps: mixing cobalt nitrate, iron nitrate, chromium nitrate, urea and ammonium fluoride in water so as to prepare a precursor mixed solution, placing a substrate in the precursor mixed solution, transferring the substrate together with the precursormixed solution to an autoclave, and then performing a reacting at 110-130 DEG C for 360-600 minutes so as to prepare the ternary CoFeCr hydrotalcite nanorod on the substrate. The ternary CoFeCr hydrotalcite nanorod together with the substrate is directly used as a working electrode for electrochemical decomposition of water. Not only the ternary CoFeCr hydrotalcite nanorod has better performance of water electrolysis and oxygen evolution than transition metal oxide in the prior art, but also the preparation process is simple, fast and efficient, has low production energy consumption, low production cost, environmental protection and no pollution, and is suitable for large-scale industrial production.

Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus.

A process of chemically recycling polyurethane-containing scrap. Polyurethane-containing scrap is subjected to a chemolysis reaction to produce chemolysis polyol products. The chemolysis polyol products are used as initiators in a reaction with alkylene oxide to produce oxyalkylated polyols for preparing polyurethanes.

This invention relates to a generic process for producing a refractory oxide which comprises reacting an aqueous hydrogen fluoride solution or its derivatives with: at least one metal fluoride reactant; or at least one metal fluoride reactant and at least one metal oxide reactant; or at least one metal oxide reactant, to produce either a colloidal mixture or a solution; drying either the colloidal mixture or solution; heating the dried product to produce a solid state metal hydroxyfluoride; heating the hydroxyfluoride to a temperature at which it chemically decomposes into a cationically-homogeneous and nanostructured solid state metal oxyfluoride; and performing one of the following heating steps: (i) to a solid state decomposition-temperature where the oxyfluoride chemically decomposes into a refractory oxide; or, (ii) to a molten state decomposition-temperature where the oxyfluoride chemically decomposes into a refractory oxide; or, (iii) to a vapor state decomposition-temperature where the oxyfluoride chemically decomposes into a refractory oxide.

Process to recover ruthenium in the form of ruthenium halide, particularly ruthenium chloride, from a ruthenium-containing supported catalyst material comprising:a) chemically decomposing the ruthenium-containing supported catalyst material;b) producing a raw ruthenium salt solution;c) purifying the raw ruthenium salt solution and optionally stripping gaseous ruthenium tetroxide from the raw ruthenium salt solution; andd) treating the purified ruthenium compound obtained in c), particularly the ruthenium tetroxide, with hydrogen halide or hydrohalic acid to obtain ruthenium halide, particularly with hydrogen chloride or hydrochloric acid to obtain ruthenium chloride.

A negative-ion putty able to durably release hydroxy negative ions to eliminate the harmful gases and odor in indoor air, such as formaldehyde, benzene, ammonia, NOx, etc and emit infrared rays to improve human immunity is prepared from polyvinyl alcohol, colloidal powder surfactant, active SiO2, bihydrated gypsum, talc powder, hydroxymethyl cellulose, heavy calcium carbonate, calcium hydroxide and negative-ion ore powder.

Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus.

Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus.

A processed solid fuel composition incorporating agents for destroying creosote and soot within flue ducts and chimneys of fireplaces, solid fuel stoves and other heating devices is disclosed, along with a method for its manufacture and a method for its use. The composition is made up of a combination of compressed cellulosic particulate material and a chemical and / or catalytic creosote and soot removing agent, and is molded in the form of a fire log in the preferred embodiment. The composition may be used alone, but is ideally applied to an active fire to treat a chimney flue by combined heating and chemical disaggregation of accumulated creosote and soot deposits.

A cooling system for cooling of a heat generating electrical component, in particular to reduce the likelihood of overheating of electrical components or chemical breakdown of coolant fluid. The cooling system has a coolant liquid to absorb excess energy from the heat generating electrical component, the coolant liquid having an energy input threshold above which chemical breakdown of the coolantliquid occurs. A cooling module defines a volume containing the coolant liquid, wherein the heat generating electrical component is mounted within the volume and immersed in the coolant liquid. A power input is arranged to supply power into the cooling module to the heat generating electrical component, and a power regulator is provided external to the volume of the cooling module and connected tothe power input so as to regulate the power supplied into the cooling module. Cooling systems are also described having coolant liquid comprising dissolved oxygen, having at least one element arranged within the volume comprising aluminium and / or aluminium oxide, and / or having a sealed volume with at least one seal which opens at a predetermined pressure or temperature corresponding to a temperature below the temperature at which the coolant liquid breaks down.

The invention discloses a manganese molybdate nanosheet material and a preparation method and application thereof. The preparation method comprises the steps of mixing sodium molybdate and manganese chloride in water regulating the concentration of sodium molybdate in the mixed solution to be 0.5-1.5mmol / l and regulating the concentration of manganese chloride to be 0.5-1.5mmol / l, thus obtaining aprecursor mixing solution; feeding a substrate into the precursor mixing solution; transferring the substrate and the precursor mixing solution into a high-pressure kettle; reacting for 360-480min under the temperature of 160-180 DEG C; and washing and drying, thus obtaining the MnMoO4 nanosheet on the substrate. The manganese molybdate nanosheet material is directly used as a working electrolytefor electrochemically decomposing water; the manganese molybdate nanosheet material is high in water electrolyzing catalyzing activity in electrolyte environments with different pH, and moreover, themanganese molybdate nanosheet material is quick to act, high in efficiency, low in cost, simple to prepare, environmentally friendly, and suitable for massive industrial production.

Magnesium hydroxide having a large specific surface area is provided. A magnesium-containing matter is chemically decomposed by a solution of acid, and a primary solution of alkali with weak alkalinity is obtained by adding a solution of alkali to the solution of acid, and impurities contained in the primary solution of alkali are eliminated, and a secondary solution of alkali with strong alkalinity is obtained by adding a solution of alkali to the primary solution of alkali, and successively a magnesium hydroxide is deposited in secondary solution of alkali.

Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus.

A process to enhance the chemical recycling of polyurethane foam comprises improving the process of grinding (which is a necessary precursor to chemolysis reactions), by employing a wetting process, concurrent with grinding, which reduces the loss of foam during grinding process.

A rapid electrophoresis system [1000] provides rapid separation of an unknown sample [1] into its component compounds. An unknown sample [1] which is to be identified is placed in an inert electrophoresis gel [1142] in a gel container [1140] in housing [1110]. The housing [1110] has electric plates [1151, 1153] straddling housing [1110]. A plurality of temperature sensors measure the temperature or chemical breakdown of gel [1142] in each track [1131, 1133, 1135, 1137] running the length of the gel container [1140]. The tracks [1131, 1133, 1135, 1137] are monitored, selectively cooled or heated by a thermal controller [1210] to bring them all to a pre-defined optimum temperature. The power across the plates is also adjusted by power controller [1210] to prevent heating and the gel [1142] from being chemically altered so that it maintains its functionality, while providing optimum performance. The temperature at each location and time, and the progression of the components could be standardized to compare current results to stored results of other components.

This invention involves a chemical agent, particularly a decomposition agent extracting fuel oil from sewage oil sludge. The decomposition agent includes (weight percentage): silica 65-75, alum 14-20, sodium hydroxide 4-8, potassium permanganate 0.05-0.1, water 3.9-5, and sodium carbonate 3-4. The decomposition has simple components, and is scientific, rational and effective. Against most sewage oil sludge having acidic characteristics, the basic ingredients such as sodium hydroxide are added to sewage oil sludge for demulsification so as to be close to a neutral pH value, and different components respectively with effects like water absorption, impurities removal, adsorption and coagulation aid are added, which make oil, soil and water degrade effectively, therefore the sewage sludge decomposition and purification effect is effectively improved and sewage sludge degrades more thoroughly.

The invention discloses a manganese tungstate nanosheet material and a preparation method and application thereof. The preparation method comprises: mixing sodium tungstate and manganese chloride in water to allow the sodium tungstate concentration of the obtained solution to be 0.5-1.5 mmol / L and the manganese chloride concentration of the solution to be 0.5-1.5 mmol / L so as to prepare a precursor mixture solution; putting a substrate into the precursor mixture solution; transferring the substrate and the precursor mixture solution together into an autoclave; reacting at 160-180 DEG C for 360-480 min; and cleaning and drying to prepare a MnWO4 nanosheet on the substrate. The manganese tungstate nanosheet material is adopted directly as a working electrode for electrochemical decompositionof water. The material has good water electrolysis catalytic activity in electrolyte environments having various pH values, and is rapid, efficient, cheap, simple to prepare, free of pollution to theenvironment and suitable for large-scale industrial production.

The present invention is a method for decomposing a polymer material by chemically decomposing a polymer material containing a first monomer and a second monomer in a mixture of the polymer material with the first monomer or a derivative of the first monomer to produce a chemical raw material. A relationship between a proportion of number of molecules of the second monomer to number of molecules of the first monomer in a reaction system for decomposing the polymer material and the molecular weight of the chemical raw material produced in the reaction system is acquired in advance (S101). Subsequently, an addition mount of the derivative of the first monomer to be added to the polymer material is determined based on the above relationship (S102). The first monomer in the addition amount determined is then mixed with the polymer material (S103).