5 results about "Atmospheric pollution" patented technology

The invention relates to a high-temperature iron-based zeolite molecular sieve honeycomb type denitration catalyst and a preparation method thereof, and belongs to the technical field of atmospheric pollution treatment technologies and environmentally friendly catalyzing materials. The preparation method comprises the following steps: mixing ferrous salts with ferrite; synthesizing a zeolite molecular sieve, natural zeolite molecular sieve powder, attapulgite clay or kaolin, glass fibers, an organic binding agent, wood pulp or sesbania cannabina powder, stearic acid and glycerinum; and carrying out mixing, ageing, extrusion forming, drying and roasting to obtain the iron-based zeolite molecular sieve honeycomb type denitration catalyst. According to the catalyst, the zeolite molecular sieve and natural raw mineral materials which have excellent thermal stability are used as carriers, and the running stability, the sintering resistance and the mechanical strength of the catalyst in a high-temperature environment are improved. The obtained honeycomb type denitration catalyst has good water resistance and sulfur poisoning resistance, and the conversion ratio of oxynitride is greater than 90% under the conditions that the temperature is in the high-temperature range of 400-600 DEG C and the air speed is 10,000 h<-1>.

The invention discloses sampling equipment for detecting atmospheric pollution, and the equipment comprises a storage cylinder; the lower end of the storage cylinder is fixedly connected with an air outlet pipe, the right portion of the air outlet pipe is provided with a valve, the right portion of the upper end of the storage cylinder is movably hinged to a sealing cover through a hinge, a roundhole is dug in the upper end of the sealing cover, and the upper end of the storage cylinder is fixedly connected with a threaded ring; a first lead screw is in threaded connection in the threaded ring and the round hole, the upper end of the first lead screw is rotationally connected with a push plate through a limiting ring, the push plate is matched with the storage barrel, the sealing cover isturned over, the push plate is inserted into the storage barrel, the second lead screw is clamped in the clamping hole, the locking nut is rotated to press the first fixed plate, and the position ofthe first fixed plate is fixed, thereby achieving the fixing of the positions of the sealing cover and the storage cylinder; the valve is opened, the first lead screw is rotated, the rotation of the first lead screw drives the push plate to move downwards, and the push plate extrudes the atmosphere collected in the storage cylinder out of the air outlet pipe.

The invention discloses a vehicle automobile exhaust catalyst containing Ce-Zr-Fe-Mn composite oxide and a preparation method thereof. The vehicle automobile exhaust catalyst containing Ce-Zr-Fe-Mn composite oxide is prepared by taking Fe-Al-Cr alloy as a carrier and Ce-Zr-Fe-Mn composite oxide and gamma-Al2O3 as assistants, and loading active constituent Pd. The NO, CO and HC with higher atmospheric pollution in automobile exhaust are converted by the catalyst without other substances, and the catalyst has high conversion efficiency and is an automobile exhaust catalyst with low toxicity and high catalytic activity.

The invention discloses an autotracking heat conductive solar cooker. The autotracking heat conductive solar cooker comprises a condensation system, a heat conductive system and an autotracking system. The condensation system comprises a parabola reflective pot face, a pot bottom support, an outer barrel, an insulating layer and a supporting rod. The parabola reflective pot face is fixed through the pot bottom support. The heat conductive system comprises a pressure vessel, a safety valve, a pressure gage, valves, a heat conductive oil pipe, a pot, a cooking range, a cooking bench base and a cooking bench. The cooking bench is fixed to the ground through the cooking bench base, the pressure vessel is installed in the outer barrel, the pressure gage and the safety valve are arranged outside the pressure vessel, the pot and the outer barrel are connected through the heat conductive oil pipe, and the pot is arranged on the cooking range. The autotracking system comprises a solar cell, a light tracking controller, a gear, a rotary shaft, a motor gearbox, a threaded shaft, heat conductive oil and two-conductor lines. The light tracking controller is installed on the edge of the parabola reflective pot face, and the pressure vessel is filled with the heat conductive oil. The autotracking heat conductive solar cooker saves a large amount of fossil energy and vegetation energy and reduces atmospheric pollution emission.