32results about How to "Low energy consumption for decomposition" patented technology

The invention relates to the field of plasma chemistry, and discloses a low-temperature plasma device for decomposing hydrogen sulfide and a method for decomposing hydrogen sulfide. The device contains a gas supply-gas distribution unit, a plasma reaction unit and a product separation unit connected sequentially through pipelines. The plasma reaction unit contains a low-temperature plasma reactor and a plasma power supply. The reactor includes: an inner cylinder, an outer cylinder, a central electrode arranged in the inner cylinder, and a side wall arranged around the inner cylinder or wrapped in the center The outer surface of the electrode or the barrier medium forming the side wall of the inner cylinder, the ground electrode; the thickness L of the discharge air gap 1 with the thickness of the barrier dielectric D 1 The proportional relationship is: L 1 :D 1 =(0.05~100):1. The low-temperature plasma device for decomposing hydrogen sulfide and the method for decomposing hydrogen sulfide provided by the invention can improve the conversion rate of hydrogen sulfide.

The invention relates to the field of plasma chemistry, and discloses a method for decomposing hydrogen sulfide by plasma, comprising: introducing raw material gas containing hydrogen sulfide into a plasma system containing a plasma reactor for sulfurization under dielectric barrier discharge conditions Hydrogen decomposition reaction, the dielectric barrier discharge conditions include: a discharge voltage of 5-30kV, a discharge frequency of 200-30000Hz; and the conditions of the hydrogen sulfide decomposition reaction include: a reaction temperature of 0-800°C, a reaction pressure of -0.06 MPa to 0.6MPa, the residence time of the reactant in the plasma reactor is 1×10 ‑5 ~120s. The method for decomposing hydrogen sulfide by plasma provided by the present invention can obtain a higher conversion rate of hydrogen sulfide under dielectric barrier discharge conditions by adopting specific discharge conditions and hydrogen sulfide decomposition reaction conditions.

The invention discloses a method for preparing sulfuric acid with co-production lime by decomposing ardealite in a suspended state, the method comprises the following steps: a) crushing and drying; b)decomposing in a suspended state: the hot air flow at 850-1200 DEG C and minus 0.8KPa in the upper part pipe of a decomposing furnace (16) exchanges heat with gas-solid biphase of the ardealite, theardealite flows through the upper part pipe of the decomposing furnace (16) with the hot air flow and enters a cyclone material and gas separator (14), the materials separated by the cyclone materialand gas separator (14) enter the bottom of the furnace body for cyclic decomposition via an air lock feeder B (15) arranged at the lower part of the cyclone material and gas separator (14); a fluidized fan (17) at the bottom of the decomposing furnace produces a fluidized decomposition effect, a necking in the middle of the decomposing furnace produces a spayed decomposition effect; the high-concentration SO2 separated by the cyclone material and gas separator (14) and the lime are led to the upper part with the hot air flow at 850 DEG C and minus 1.8KPa for cyclone separation; and c) cycloneseparation. The method is characterized by short ardealite decomposition time, high decomposition efficiency, high-concentration SO2, energy saving and consumption reduction.

The invention relates to a method for producing alumina with aluminum-containing metallurgical material; the process comprises sulfuric acid decomposition of aluminum-containing metallurgical material, aluminium sulfate solution purification, aluminum precipitation of sodium carbonate salt, aluminum hydroxide calcination, sodium carbonate salt regeneration, sulphuric acid regeneration and other main procedures; the sulphuric acid, sodium bicarbonate and other chemical raw materials used in an alumina production process can be regenerated and recycled; and the method has the advantages of goodalumina product quality, low production cost, environmental-friendliness and the like.

The invention discloses an anaerobic decomposition furnace for household garbage, which comprises an inner cylinder, an outer cylinder, a driving mechanism, a first feeding machine, a second feeding machine and a discharging machine, both the outer cylinder and the inner cylinder are horizontal, and the driving mechanism Drive the outer cylinder to rotate, the inner cylinder and the outer cylinder are coaxially fixed in the outer cylinder, there is a heating chamber between the rear end of the outer cylinder and the inner cylinder, the inner cylinder has a first inclined lifting material plate, and the outer cylinder has a second inclined lifting material plate, the discharge end of the first feeder passes through the front end of the outer cylinder and the front end of the inner cylinder in sequence and communicates with the inner cavity of the inner cylinder, and the feed end of the discharge machine passes through the rear end of the outer cylinder and the The rear end communicates with the inner cavity of the inner cylinder. The discharge machine has a gas outlet and a solid outlet. The solid outlet communicates with the feed end of the second feeder. The discharge end of the second feeder communicates with the heating chamber. The outer cylinder The front end has a waste residue outlet. The domestic garbage anaerobic decomposition furnace provided by the invention can recycle and utilize the energy remaining in the domestic garbage, has low energy consumption for garbage decomposition, and can continuously decompose garbage.