Abstract: A system and method deliver fluidized powder based on flue gas carrying waste slag and instant cooling steel slag. A first flue gas pipeline receives pressurized CO2-rich flue gas and in fluid communication with a fluidization air pipeline, a pressurization air pipeline and a supplementary air pipeline respectively and through them enters an upper discharge bin; a second flue gas pipeline receives the pressurized CO2-rich flue gas and in fluid communication with a gas-gas mixer, a dense phase discharge guide pipe first end extends into the upper discharge bin and receives high-pressure dense phase gas-powder flow of CO2-rich flue gas, and a dense phase discharge guide pipe second end is connected to the gas-gas mixer; a variable-pitch twin screw sealed conveyor discharge end extends into an upper discharge bin internal space, and is provided with an upwardly inclined gas-blocking segment.

Abstract: An interdigital capacitor and a multiplying digital-to-analog conversion circuit, where the interdigital capacitor includes at least one first metal layer. The following components are disposed in each first metal layer: a first electrode; at least one first finger metal connected to the first electrode; a second electrode; and a plurality of second finger metals connected to the second electrode, and at least one third finger metal connected to the second electrode. The at least one first finger metal is alternately disposed with the plurality of second finger metals to form capacitors, and the at least one third finger metal is a dummy finger metal.

Abstract: The present invention belongs to the technical field of metallurgical solid waste resource utilization, and particularly relates to acidification and carbonization coupling modified steel slag as well as a preparation process and an application thereof. The process specifically includes the following steps of adopting acetic acid, tributyl phosphate, ethanolamine and a NaOH and Ca(OH)2 emulsion as reaction reinforcing agents, and modifying the steel slag together with CO2-rich lime kiln flue gas. The process for modifying the steel slag through acidification and carbonization coupling provided in the present invention has the advantages of simple reaction conditions and no need of high-pressure CO2, additionally, the carbonation reaction rate can be greatly increased, and f-CaO and f-MgO in the steel slag can be effectively eliminated.

Abstract: An ironmaking system and process of a two-section downdraft bed, including: a vertical melting furnace, where a basic combustor/gasifier is at the top, first and second inlets evenly along a side wall of the melting furnace below the basic combustor/gasifier, and the first inlet connected to coke powder/pulverized coal, air, and water vapor sources; a slag pool, at a bottom of the melting furnace; a vertical pre-reduction furnace, the top portion connected to the outlet of the melting furnace, third and fourth inlets on an upper portion of the pre-reduction furnace and connected respectively to a temperature-adjusting and tempering medium source and an iron mineral powder source, an outlet at a bottom of the pre-reduction furnace; and a separator, an inlet of the separator connected to the outlet of the pre-reduction furnace, and an outlet at a bottom of the separator connected to the second inlet through a pipeline.

Abstract: An interdigital capacitor and a multiplying digital-to-analog conversion circuit are provided. The interdigital capacitor includes at least one first metal layer. The following components are disposed in each first metal layer: a first electrode; at least one first finger metal connected to the first electrode; a second electrode; and a plurality of second finger metals connected to the second electrode, and at least one third finger metal connected to the second electrode. The at least one first finger metal is alternately disposed with the plurality of second finger metals to form capacitors, and the at least one third finger metal is a dummy (dummy) finger metal.

Abstract: The present invention discloses a process for preparing sulfur from reduction of sulfate/nitrate by iron-carbon and recovering desulfurization/denitration agents. High-concentration SO2 flue gas produced by calcination of a sulfate and NOx produced by heating decomposition of a nitrate can be directly reduced to elemental sulfur vapor and N2 through reaction with an iron-carbon material at a high temperature. Then, after dust removal, cooling and fine dust removal, sulfur is recovered by a sulfur recovery device, and metal oxides can replace alkaline mineral resources such as limestone as raw materials of desulfurization (denitration) agents. This process can recycle the desulfurization and denitration agents.

Abstract: A system and method for recovering sulfur in a copper smelting process includes removing fine dust from high-concentration SO2 flue gas from a matte smelting furnace, introducing the flue gas into a fluidized bed carbothermic reduction tower to be reduced by a carbon-based reducing agent to obtain reducing gas, passing the reducing gas through a high temperature separator to separate down unsaturated powder coke contained in the reducing gas, and condensing the reducing gas to obtain sulfur. The saturated powder coke entrained in the reducing gas enters a desorption tower to desorb SO2 gas therein, and the desorbed powder coke enters a fluidized bed sulfur reduction tower to continue to participate in the reduction reaction. Part of the SO2 gas discharged from the desorption tower is discharged to the fluidized bed carbothermic reduction tower to produce sulfur, and the other part enters a desulfurization tower.

Abstract: An ultra-low-speed rotating low-strain high-filling-rate hydrogen alloy automatic absorption-desorption reaction device includes a shell, a hydrogen storage reaction bed, a motor, a controlling and monitoring system, a wire inlet port, a hydrogen absorption and desorption port, and a universal angle wheel. The reaction bed is circular, rotating at a low speed under driving of a light ultra-low speed motor; facades on two sides of the reaction bed are respectively provided with a transmission shaft and the hydrogen absorption and discharge port which are respectively connected with an ultra-low-speed gear reduction motor or a high-pressure hydrogen storage tank and a hydrogen-consuming device; the reaction bed includes a hydrogen storage metal alloy, a heat-conducting anti-hardening filling material, and a phase change material; a shell of the alloy reaction bed has a heater and an external side surface of a hydrogen storage alloy reaction device has a PLC controlling and monitoring system.

Abstract: A pulverized coal gasification device and process for producing high heating value coal gas with low carbon residue content includes a U-shaped coal gas generation furnace and a coal gas-semicoke separating device, and the U-shaped coal gas generation furnace consists of two section structures including high-temperature and low-temperature sections which are arranged in a U-shaped manner; the high-temperature section and the low-temperature section share an ash hopper; the high-temperature section is a downward entrained-flow bed, and the low-temperature section is an upward entrained-flow bed; and an inlet of the coal gas separating device is connected to the outlet of the low-temperature section, a solid outlet of the coal gas separating device is connected to an inlet of the high-temperature section, and a gas outlet of the coal gas separating device is connected to a coal gas waste heat utilizing and purifying system. The coal utilization rate can be greatly increased.

Abstract: The present invention discloses a process for preparing sulfur from reduction of sulfate/nitrate by iron-carbon and recovering desulfurization/denitration agents. High-concentration SO2 flue gas produced by calcination of a sulfate and NOx produced by heating decomposition of a nitrate can be directly reduced to elemental sulfur vapor and N2 through reaction with an iron-carbon material at a high temperature. Then, after dust removal, cooling and fine dust removal, sulfur is recovered by a sulfur recovery device, and metal oxides can replace alkaline mineral resources such as limestone as raw materials of desulfurization (denitration) agents. This process can recycle the desulfurization and denitration agents.

Abstract: A system and method for recovering sulfur in a copper smelting process, in which fine dust is removed from high-concentration SO2 flue gas from a matte smelting furnace, the flue gas is introduced into a fluidized bed carbothermic reduction tower and reduced by a carbon-based reducing agent to obtain reducing gas, which is introduced into a high temperature separator. The separated reducing gas contains unsaturated powder coke, and the reducing gas is condensed to obtain sulfur. The saturated powder coke entrained enters a desorption tower to desorb SO2 gas, and the desorbed powder coke enters a fluidized bed sulfur reduction tower. Part of the SO2 gas discharged from the desorption tower is discharged to the fluidized bed carbothermic reduction tower to produce sulfur, and the other part is introduced into a desulfurization tower.

Abstract: A pulverized coal gasification device and process for producing high heating value coal gas with low carbon residue content includes a U-shaped coal gas generation furnace and a coal gas-semicoke separating device, and the U-shaped coal gas generation furnace consists of two section structures including high-temperature and low-temperature sections which are arranged in a U-shaped manner; the high-temperature section and the low-temperature section share an ash hopper; the high-temperature section is a downward entrained-flow bed, and the low-temperature section is an upward entrained-flow bed; and an inlet of the coal gas separating device is connected to the outlet of the low-temperature section, a solid outlet of the coal gas separating device is connected to an inlet of the high-temperature section, and a gas outlet of the coal gas separating device is connected to a coal gas waste heat utilizing and purifying system. The coal utilization rate can be greatly increased.

Abstract: A surface condensation process and device for efficiently removing coal combustion fly ash micro spheres are provided. The device is comprised of a patterned-plate type atomizer, a flow meter, an ultrasonic drive power source, an automatic temperature controller, a heat-tracing pipeline, a condensation sleeve, an electrically heated water storage tank, a water pump and an electrostatic precipitator.

Abstract: An air preheating and denitration integrated reactor and reaction method. The reactor includes a rotary catalyst body, housing arranged outside the rotary catalyst body, and gas inlet and outlet channels on upper and lower surfaces of the housing; the gas inlet and outlet channel is in divided three, namely flue gas, reductant, and air inlet and outlet channels, the rotary catalyst body is cylindrical and includes a central shaft rotor and multiple circular catalyst layers rotate around the central shaft rotor, each circular catalyst layer is divided into air, flue gas and reductant zones by a radial sealing plate and axial sealing plate. In each circular catalyst layer, a catalyst in the reactor alternately circulates in flue gas, reductant and air zones. The catalyst performs heating-reheating-cooling process on catalyst layers along with the reactor rotation, different temperatures and reaction atmospheres in zones conductive of air preheating and denitration.

Abstract: A surface condensation process and device for efficiently removing coal combustion fly ash micro spheres are provided. The device is comprised of a patterned-plate type atomizer, a flow meter, an ultrasonic drive power source, an automatic temperature controller, a heat-tracing pipeline, a condensation sleeve, an electrically heated water storage tank, a water pump and an electrostatic precipitator.

Abstract: An air preheating and denitration integrated reactor and reaction method. The reactor includes a rotary catalyst body, housing arranged outside the rotary catalyst body, and gas inlet and outlet channels on upper and lower surfaces of the housing; the gas inlet and outlet channel is in divided three, namely flue gas, reductant, and air inlet and outlet channels, the rotary catalyst body is cylindrical and includes a central shaft rotor and multiple circular catalyst layers rotate around the central shaft rotor, each circular catalyst layer is divided into air, flue gas and reductant zones by a radial sealing plate and axial sealing plate. In each circular catalyst layer, a catalyst in the reactor alternately circulates in flue gas, reductant and air zones. The catalyst performs heating-reheating-cooling process on catalyst layers along with the reactor rotation, different temperatures and reaction atmospheres in zones conductive of air preheating and denitration.

Abstract: Disclosed is technology and device for uniform distribution of water film on solid collecting plate used on a wet electrostatic precipitator (ESP). The device includes clamping plate fastening bolts, suspended clamping plates, a water distribution pipe, guide vanes, collecting plate, a limiter, a two-way limited fixed axis and a double arming bolt. The surfaces of the solid collecting plate are subjected to coating pretreatment, the upper parts of the collector are connected with the water distribution pipe, and the 45° guide vanes are twisted; a corrugated diversion with the width of 5 to 8 mm is adopted; stainless steel pipes are crosswise welded, water distribution holes are formed at the water distribution pipe, the distribution pipe is connected with an external water tank, and the inlet quantity of the water is controlled by a PLC; the collectors are placed vertically, and the ESP contains a set of sharp discharge electrodes.

Abstract: Disclosed is technology and device for uniform distribution of water film on solid collecting plate used on a wet electrostatic precipitator (ESP). The device includes clamping plate fastening bolts, suspended clamping plates, a water distribution pipe, guide vanes, collecting plate, a limiter, a two-way limited fixed axis and a double arming bolt. The surfaces of the solid collecting plate are subjected to coating pretreatment, the upper parts of the collector are connected with the water distribution pipe, and the 45° guide vanes are twisted; a corrugated diversion with the width of 5 to 8 mm is adopted; stainless steel pipes are crosswise welded, water distribution holes are formed at the water distribution pipe, the distribution pipe is connected with an external water tank, and the inlet quantity of the water is controlled by a PLC; the collectors are placed vertically, and the ESP contains a set of sharp discharge electrodes.