Abstract: Disclosed is a trolley sealing device for a flue gas circulation system of a sintering machine, including a cover body covering a top surface of a sintering machine trolley. A top end of the cover body is provided with communication assemblies, and the communication assemblies communicate an inner cavity of the cover body with an outside environment; two ends of the inner cavity of the cover body are fixedly connected with vertical adjusting sections respectively, and a sealing device is arranged between the vertical adjusting sections and two ends of the top surface of the sintering machine trolley; and the cover body includes a plurality of frameworks; the plurality of frameworks are arranged above the sintering machine trolley, the communication assemblies are arranged on the frameworks, and skins are fixedly connected with the frameworks; and thermal insulation layers are arranged outside the skins.

Abstract: The present application discloses a pellet flue gas circulation and waste heat utilization process and a system thereof, which relates to the technical field of flue gas treatment. The system includes a grate, a rotary kiln, an annular cooler, and ducts connecting each part. On the basis of not changing the existing process a flue gas circulation unit and intelligent control equipment are arranged additionally in the present application. The process is simple, and not only can ensure the parameter stability of the production system such as temperature, gas flow or gas pressure, but also can make full use of the low and medium temperature flue gas components and the waste heat, so as to achieve net zero waste gas discharging, energy saving and emission reduction.

Abstract: Disclosed is a trolley sealing device for a flue gas circulation system of a sintering machine, including a cover body covering a top surface of a sintering machine trolley. A top end of the cover body is provided with communication assemblies, and the communication assemblies communicate an inner cavity of the cover body with an outside environment; two ends of the inner cavity of the cover body are fixedly connected with vertical adjusting sections respectively, and a sealing device is arranged between the vertical adjusting sections and two ends of the top surface of the sintering machine trolley; and the cover body includes a plurality of frameworks; the plurality of frameworks are arranged above the sintering machine trolley, the communication assemblies are arranged on the frameworks, and skins are fixedly connected with the frameworks; and thermal insulation layers are arranged outside the skins.

Abstract: Disclosed are a flue gas purification and waste heat utilization system and method. The system comprises a flue gas exhaust unit, a primary waste heat utilization unit, a primary flue gas purification unit, a secondary waste heat utilization unit and a secondary flue gas purification unit that are sequentially connected in a flue gas flow direction, wherein the primary flue gas purification unit is configured for removing NOx, large particles and CO in the flue gas, the secondary flue gas purification unit is configured for removing NOx and dioxin in the flue gas, an ammonia-spraying device is externally connected between the flue gas exhaust unit and the primary waste heat utilization unit, and the ammonia-spraying device is configured for injecting ammonia gas into the flue gas exhausted from the flue gas exhaust unit.

Abstract: Disclosed are an activated carbon adsorption tower and a gas purification device. An activated carbon adsorption tower comprises an adsorption tower body (1), a gas inlet (2) and a gas outlet (3) arranged on the adsorption tower body (1); the adsorption tower body (1) is provided with an activated carbon passage (11), a swash plate (12) and a gas passage in communication with the gas inlet (2) and the gas outlet (3); the gas passage is separated by the swash plate (12) into a U shape or serpentine shape, making the gas passage pass through the same activated carbon passage (11) from the opposite direction at least once; and the activated carbon passage (11) is provided with flowing activated carbon inside and gas holes on the passage wall for communicating with the gas passages on both sides.

Abstract: Disclosed are a flue gas purification and waste heat utilization system and method. The system comprises a flue gas exhaust unit, a primary waste heat utilization unit, a primary flue gas purification unit, a secondary waste heat utilization unit and a secondary flue gas purification unit that are sequentially connected in a flue gas flow direction, wherein the primary flue gas purification unit is configured for removing NOx, large particles and CO in the flue gas, the secondary flue gas purification unit is configured for removing NOx and dioxin in the flue gas, an ammonia-spraying device is externally connected between the flue gas exhaust unit and the primary waste heat utilization unit, and the ammonia-spraying device is configured for injecting ammonia gas into the flue gas exhausted from the flue gas exhaust unit.

Abstract: Disclosed is a flue gas purification tower, comprising a tower body, at least one gas inlet (1) disposed at the bottom of the tower body, at least one gas outlet (2) disposed at the top of the tower body, at least one active coke layer (3) located inside the tower body, and a baffle plate (4) arranged in a place where the flow direction of the flue gas from the gas inlet changes. The baffle plate (4) is a straight plate, an arc plate, a straight-and-arc plate or a straight-arc-straight plate, wherein the straight-and-arc plate comprises a straight segment and an arc segment connected with each other; and the straight-arc-straight plate comprises a straight segment in the vertical direction, a straight segment in the horizontal direction, and an arc segment connected between the two straight segments.

Abstract: Disclosed are a system and a method for desulfurization and denitrification of an alumina calcination flue gas, and a use. The system comprises an ozone generator, a red mud pre-impregnation slurry scrubbing tower, and a red mud pre-impregnation tank and a red mud pre-impregnation clear liquid scrubbing tower. NOx in a flue gas is oxidized into a high valence oxynitride by ozone, and with the red mud as an absorbent, the synergistic absorption of SO2 and NOx in the flue gas is achieved, while the dealkalization of the red mud is achieved. By means of the synergistic catalytic oxidation of metal ions such as Fe3+ in a red mud slurry and ozone, the synergistic absorption of sulfur and oxynitride is prompted; and the use of a structure of staged absorption in two towers overcomes the problem of the difficulty in absorbing NO2 with a low O3/NOx molar ratio.

Abstract: Disclosed are a system and a method for desulfurization and denitrification of an alumina calcination flue gas, and a use. The system comprises an ozone generator (1), a red mud pre-impregnation slurry scrubbing tower (3), and a red mud pre-impregnation tank (5) and a red mud pre-impregnation clear liquid scrubbing tower (10). NOx in a flue gas is oxidized into a high valence oxynitride by ozone, and with the red mud as an absorbent, the synergistic absorption of SO2 and NOx in the flue gas is achieved, while the dealkalization of the red mud is achieved.

Abstract: Disclosed is a flue gas purification tower, comprising a tower body, at least one gas inlet (1) disposed at the bottom of the tower body, at least one gas outlet (2) disposed at the top of the tower body, at least one active coke layer (3) located inside the tower body, and a baffle plate (4) arranged in a place where the flow direction of the flue gas from the gas inlet changes. The baffle plate (4) is a straight plate, an arc plate, a straight-and-arc plate or a straight-arc-straight plate, wherein the straight-and-arc plate comprises a straight segment and an arc segment connected with each other; and the straight-arc-straight plate comprises a straight segment in the vertical direction, a straight segment in the horizontal direction, and an arc segment connected between the two straight segments.

Abstract: A flue ozone distributor applied in a low-temperature oxidation denitrification technology and an arrangement manner thereof is disclosed. The flue ozone distributor comprises a distribution main pipe, multiple distribution branch pipes, Venturi distributors and delta wings. The distribution branch pipes are led out from the distribution main pipe as parallel branches. The Venturi distributors are arranged with an equal space on the distribution branch pipes. The delta wings are arranged on one diffusion segment side of the Venturi distributors. The flue ozone distributor is arranged in the flue. The technology is used in the field of denitrification for flue gas of an industrial boiler/kiln by a low-temperature ozone oxidation method. The ozone-injecting direction is consistent with a flow direction of the flue gas. A soot deposit congestion problem does not exist. A turbulent flow behavior of the flue gas and ozone is strengthened. The oxidation efficiency is improved.

Abstract: Disclosed are an activated carbon adsorption tower and a gas purification device. An activated carbon adsorption tower comprises an adsorption tower body (1), a gas inlet (2) and a gas outlet (3) arranged on the adsorption tower body (1); the adsorption tower body (1) is provided with an activated carbon passage (11), a swash plate (12) and a gas passage in communication with the gas inlet (2) and the gas outlet (3); the gas passage is separated by the swash plate (12) into a U shape or serpentine shape, making the gas passage pass through the same activated carbon passage (11) from the opposite direction at least once; and the activated carbon passage (11) is provided with flowing activated carbon inside and gas holes on the passage wall for communicating with the gas passages on both sides.

Abstract: Equipment and a method for circulating fluidized bed semidry simultaneous desulfurization and denitration of a sintering flue gas, comprising an ozone generator (2), a diluting blower (1), a mixing buffer tank (3), an ozone distributor (4), and a circulating fluidized bed (CFB) reactor tower (9). When evenly mixed by the mixing buffer tank (3), ozone is injected into a flue (4?) via the ozone distributor (4); and, an oxidized flue gas is introduced into the CFB reactor tower (9), where NOx, SO2, and SO3 in the flue gas are reacted with a Ca-based absorbent under the action of atomized water in the reactor tower, thus implementing simultaneous removal of SOx and NOx. This provides the characteristics of a simple system, great performance, small footprint, and inexpensive investments.

Abstract: Equipment and a method for circulating fluidized bed semidry simultaneous desulfurization and denitration of a sintering flue gas, comprising an ozone generator (2), a diluting blower (1), a mixing buffer tank (3), an ozone distributor (4), and a circulating fluidized bed (CFB) reactor tower (9). When evenly mixed by the mixing buffer tank (3), ozone is injected into a flue (4?) via the ozone distributor (4); and, an oxidized flue gas is introduced into the CFB reactor tower (9), where NOx, SO2, and SO3 in the flue gas are reacted with a Ca-based absorbent under the action of atomized water in the reactor tower, thus implementing simultaneous removal of SOx and NOx. This provides the characteristics of a simple system, great performance, small footprint, and inexpensive investments.

Abstract: A combined desulfuration, denitration, and demercuration apparatus and method using a semi-dry process in a circulating fluidized bed. The apparatus comprises a flue (2) and a circulating fluidized bed reaction column (8) connected in sequence, the flue (2) being connected to a bottom inlet of the circulating fluidized bed reaction column (8). The flue (2) is further connected to an ozone generation apparatus (1). The ozone distributor (1) feeds ozone in the flue (2) and sends oxidized flue gas into the circulating fluidized bed reaction column (8), so that the SO2, high-valence NOx, and Hg2+ contained in the flue gas are removed through reactions with a Ca-based absorbent under the effect of atomized water in the reaction column (8).

Abstract: The present invention provides a process and system for waste heat grading cyclic utilization and pollutant emission reduction of sintering flue gas, in which the sintering flue gas is divided into low-temperature, high-oxygen, low-humidity section sintering flue gas; middle-temperature, low-oxygen, high-humidity section sintering flue gas; and high-temperature, high-oxygen, low-humidity section sintering flue gas according to the emission characteristics of temperature, oxygen content and humidity of the flue gas. The low-temperature, high-oxygen, low-humidity section sintering flue gas is led into the sintering machine for hot air ignition and hot air sintering; the middle-temperature, low-oxygen, high-humidity section sintering flue gas is subjected to dust removal and desulfurization treatments; the high-temperature, high-oxygen, low-humidity section sintering flue gas is mixed with exhaust gas of a cooler and then is led into the sintering machine for hot air sintering.

Abstract: The present invention relates to a flue ozone distributor applied in a low-temperature oxidation denitrification technology and an arrangement manner thereof. The flue ozone distributor comprises a distribution main pipe, multiple distribution branch pipes, multiple Venturi distributors and multiple delta wings. The multiple distribution branch pipes are led out from the distribution main pipe as parallel branches. The multiple Venturi distributors are arranged with an equal space on the distribution branch pipes. The delta wings are arranged on one diffusion segment side of the Venturi distributors. The flue ozone distributor is arranged in the flue. The present invention is mainly applied in a field of denitrification for flue gas of an industrial boiler/kiln by a low-temperature ozone oxidation method in industries such as pyroelectricity, steel and the like. The ozone-injecting direction is consistent with a flow direction of the flue gas. A soot deposit congestion problem does not exist.

Abstract: A combined desulfuration, denitration, and demercuration apparatus and method using a semi-dry process in a circulating fluidized bed. The apparatus comprises a flue (2) and a circulating fluidized bed reaction column (8) connected in sequence, the flue (2) being connected to a bottom inlet of the circulating fluidized bed reaction column (8). The flue (2) is further connected to an ozone generation apparatus (1). The ozone distributor (1) feeds ozone in the flue (2) and sends oxidized flue gas into the circulating fluidized bed reaction column (8), so that the SO2, high-valence NOx, and Hg2+ contained in the flue gas are removed through reactions with a Ca-based absorbent under the effect of atomized water in the reaction column (8).

Abstract: The present invention relates to a composite internal in a circulating fluidized bed reactor, comprising guide plates, disturbing plates and 2 to 30 round tubes, wherein the guide plate (3) is secured with its one side to the round tube (1), and the disturbing plate (4) is secured with its one side to the round tube (1) and with its another side to another side of said guide plate (3), with an angle of 50 to 90° included between the guide plate (3) and disturbing plate (4). The round tubes (1) each provided with respective guide plate and disturbing plate are fixed together at one end, and said 2 to 30 round tubes (1) are arranged in one and the same plane. The other end of each round tube (1) is arranged in a radiate manner with respect to the fixed point as a center, and an angle included between each round tube (1) is different from or equal to each other, in a range of 100 to 180°.

Abstract: The present invention relates to a composite internal in a circulating fluidized bed reactor, comprising guide plates, disturbing plates and 2 to 30 round tubes, wherein the guide plate (3) is secured with its one side to the round tube (1), and the disturbing plate (4) is secured with its one side to the round tube (1) and with its another side to another side of said guide plate (3), with an angle of 50 to 90° included between the guide plate (3) and disturbing plate (4). The round tubes (1) each provided with respective guide plate and disturbing plate are fixed together at one end, and said 2 to 30 round tubes (1) are arranged in one and the same plane. The other end of each round tube (1) is arranged in a radiate manner with respect to the fixed point as a center, and an angle included between each round tube (1) is different from or equal to each other, in a range of 100 to 180°.