8 results about "Halocarbon" patented technology

The invention discloses a halogenated hydrocarbon and heavy metal combined pollution natural attenuation life cycle benefit evaluation method, and belongs to the technical field of environmental science and engineering. The method comprises the following steps: constructing an MNA full-life-cycle system boundary, and establishing a list database including monitoring well network full-life-cycle operation and maintenance, long-term sampling analysis and natural attenuation asset accounting; establishing a biogeochemical coupling evaluation model, and introducing a coupling factor to quantify the synergistic environmental benefit of halogenated hydrocarbon anaerobic degradation and heavy metal reduction fixation; selecting global warming potential, primary energy consumption and secondary environment risk indexes to carry out characterization evaluation; a net environmental benefit (NEB) is calculated based on a time discount principle. According to the method, the ecological and economic comprehensive advantages of the MNA technology in the specific combined pollution area can be scientifically and quantitatively revealed, and a decision basis is provided for green restoration technology screening and long-term monitoring scheme optimization.

The application discloses a high-boiling halogenated hydrocarbon dechlorination device in the technical field of waste lubricating oil treatment, which comprises a reaction tank, an oil inlet pipe and a reaction agent feeding pipe are connected to the reaction tank, a water washing mechanism is connected to the discharge port of the reaction tank, and a flash tower is connected to the water washing mechanism; a heating plate is arranged in the reaction agent feeding pipe; a through hole is formed in the heating plate; a guide rod is slidably arranged on the reaction tank; a blocking plate is arranged on the inner side end of the guide rod; an installation box is arranged on the reaction tank; the outer side end of the guide rod extends into the installation box and is connected with a pressing piece; a touch switch is arranged in the installation box; and the controller is electrically connected with the heating plate. In the application, when the dechlorination agent solidifies, the speed of the dechlorination agent entering the reaction tank is reduced, the blocking plate moves with the pressing piece to press the touch switch, the controller is driven to control the heating plate to work in the power-on mode, the temperature of the dechlorination agent is increased, and the dechlorination agent can fully contact with the distillate oil.

The invention discloses a halogenated hydrocarbon polymer mediated hard carbon material, a preparation method and application thereof, and a battery. The preparation method comprises the following steps: (1) sequentially carrying out pre-carbonization and ball milling on bamboo powder, and then carrying out surface oxidation treatment to obtain a bamboo powder precursor; and (2) mixing the bamboo powder precursor with a solution containing a halogenated hydrocarbon polymer, drying, and carbonizing to obtain the halogenated hydrocarbon polymer mediated hard carbon material. The preparation method disclosed by the invention is simple to operate, low in cost and easy for industrial production, and the prepared hard carbon material has a rich internal closed-pore structure and shows excellent cycle stability and high cycle efficiency when being applied to batteries.

This invention belongs to the field of gas storage materials technology, specifically relating to a high-capacity porous organic polymer adsorbent for methane storage, its preparation method, and its application. A mixed solution is obtained by dissolving bis(cyclopentadienyl)ferric and 4,4'-dichloromethylbiphenyl in a halocarbon solvent. Then, under the action of a Lewis acid catalyst, a Friedel-Crafts alkylation reaction is carried out in one step at a preset temperature to obtain the porous organic polymer adsorbent. This invention constructs a hierarchical porous framework with both high specific surface area and high packing density using a one-step direct heating process. The prepared porous organic polymer adsorbent exhibits a methane weight adsorption capacity as high as 0.55 g g at 273 K and 100 bar. ‑1 The volume adsorption capacity reaches 310 cm³. 3 STP cm ‑3 This provides a new option for high-performance adsorption materials in fields such as on-board storage of adsorbed natural gas (ANG) and industrial methane recovery.

This invention discloses a method and system for determining volatile halogenated hydrocarbons in dissolved gases of seawater, belonging to the field of analytical chemistry. The method employs direct gas injection combined with a six-way valve switching injection system, enabling the direct and simultaneous determination of seven volatile halogenated hydrocarbons in seawater: chloroform, carbon tetrachloride, trichloroethylene, bromodichloromethane, tetrachloroethylene, dibromochloromethane, and tribromomethane. This eliminates the need for organic solvents and complex pretreatment, filling a technological gap in this field. Validation shows a detection limit of 0.1–1.1 nmol / mol, a retention time RSD ≤ 0.20%, a concentration RSD ≤ 4.93%, and a relative error between -2.01% and 1.56%. The method exhibits advantages such as high sensitivity, good stability, simple operation, and environmental friendliness, and can be directly applied to fields such as marine environmental monitoring and seabed oil and gas resource exploration.

A process for recovery of at least one gas bound to a material from the material, wherein the process comprises exposing the material to heat, reduced pressure and a purge flow in a chamber, to separate the gas bound to a material into a mixture of recovered gases and a degassed residual material.

The application discloses a kind of carbon fluoride material and its preparation method and application, belong to lithium / carbon fluoride battery technical field.The application is by carbon material into fixed bed reactor, after vacuumizing, heated to 200~1000 DEG C, inert gas is passed into, after keeping the pressure of reaction system stable, then inert gas containing halogenated reagent is passed into and carries out halogenation reaction, obtains halogenated carbon, continuously passes into inert gas containing fluorinated reagent, under 100~1000 DEG C, the product obtained is soaked by lye, deionized water is cleaned, after drying, obtains carbon fluoride material.The application is first by halogenation reaction, so that halogen atom is located between carbon layer, interval is larger, is conducive to the fluorination reaction of subsequent, also makes the heterogeneity of each place of carbon reduce, avoids invalid structure caused by excessive fluorination of edge carbon, and the specific capacity of prepared carbon fluoride is higher, and the wider interval of carbon material can make electrolyte fully infiltrate, guarantees the power characteristics of battery.

Examples are disclosed that relate to shaping a feature using a topologically selective deposition and selective etch. One example provides a method for shaping a film of a gapfill material on a feature of a substrate, the method comprising performing a topologically selective deposition of a carbon film on a portion of the gapfill material of the substrate. The method further comprising forming a plasma using a halogen-containing etchant to incorporate halogen species from the halogen-containing etchant into the carbon film to form a halogenated carbon film. The method further comprising ashing the carbon film to thereby cause etching of the gapfill material by the halogen species selectively at locations that were covered by the halogenated carbon film.