8results about How to "Reduce particulate matter" patented technology

The utility model relates to the technical field of smoke dust treatment, and discloses a smoke dust removal device capable of recycling waste heat of a biomass boiler, which comprises a boiler, an electric telescopic rod is slidably connected to one side of the top end of the boiler, a motor is rotatably connected to the top of the electric telescopic rod, and a connecting rod is fixedly connected to the driving end of the electric telescopic rod. And cleaning frames are fixedly connected to the peripheries of the upper portion and the lower portion of the connecting rod, sliding plates are slidably connected to the interiors of the cleaning frames, and brushes are fixedly connected to the sides, away from each other, of the two sliding plates. According to the utility model, the dust on the inner wall of the boiler is removed through the dust removal mechanism, so that dust on the inner wall of the boiler device is not increased, the usability of the device is not reduced, the service life of the device is not shortened, and particulate matters and dust generated by biomass combustion can be effectively captured and removed through the dust prevention mechanism, so that the amount of particulate matters discharged by the boiler is reduced; air pollution is reduced, and the surrounding environment is protected.

This invention discloses a method for ultrapurifying electronic-grade hydrochloric acid using gas membrane filtration and multi-stage distillation. The method includes: preheating industrial-grade hydrochloric acid feedstock and feeding it into a desorption column; desorption at a temperature above the azeotropic point of hydrogen chloride and water to obtain crude hydrogen chloride gas; cooling the obtained crude hydrogen chloride gas to above its dew point and then feeding it into a gas membrane separation unit for filtration using a hydrophobic porous or dense membrane to remove entrained droplets, particulate matter, and non-volatile metal impurities, obtaining purified hydrogen chloride gas; pressurizing and liquefying the obtained purified hydrogen chloride gas and then feeding it into a multi-stage distillation column system for continuous distillation. The multi-stage distillation column system includes at least two distillation columns connected in series, further removing trace impurities with boiling points similar to hydrogen chloride through gas-liquid mass transfer to obtain ultrapure hydrogen chloride liquid; vaporizing the obtained ultrapure hydrogen chloride liquid and isothermally absorbing it with ultrapure water in an absorption column to obtain electronic-grade hydrochloric acid product. This invention significantly reduces the impurity load of the distillation system.

The utility model relates to the technical field of oil tank machining, in particular to an oil tank machining device with a waste gas treatment function, which comprises a table type supporting mechanism, a waste gas treatment mechanism and a waste gas treatment mechanism. The water cooling mechanism is arranged on the table type supporting mechanism, and a water cooling assembly and a spraying assembly are arranged in the water cooling mechanism; the gas inlet mechanism is installed on the water cooling mechanism, the water cooling assembly is used for cooling the surface wall of the initial end of the gas inlet mechanism, and the spraying assembly is used for spraying cooling and dust falling of waste gas in the gas inlet mechanism; according to the waste gas treatment device, waste gas on the pipe wall and waste gas in the pipe wall are properly cooled, then the waste gas is sprayed through the spraying mechanism, on one hand, the waste gas is cooled again, and on the other hand, the waste gas in the pipe wall and the waste gas in the pipe wall are cooled; on the other hand, pollutants are absorbed, neutralized or captured through contact between the spraying liquid and the waste gas, and particles in the waste gas can be effectively reduced.

This invention discloses a method and system for controlling surface defects in strip steel, applied in a defect control system. The defect control system includes a coating liquid circulation subsystem. The inner wall of the circulation pipe in the coating liquid circulation subsystem is made of a smooth material. A backwashing device is installed at a predetermined position in the circulation pipe to improve the rinsing efficiency at the predetermined position. The defect control system also includes a cleaning device and a controller. The cleaning device is connected to the circulation pipe, and the controller is connected to the cleaning device. The method includes: controlling the cleaning device to rinse the circulation pipe at every preset cleaning cycle; during the operation of the coating liquid circulation subsystem, controlling the stirring speed during the coating liquid preparation process to be greater than a first preset speed threshold, and controlling the stirring speed during the coating liquid use process to be greater than a second preset speed threshold. This method can effectively improve the surface indentation defects of strip steel, avoid the generation of batch indentation defects, and thus improve the production quality of strip steel.

The invention provides a diffuser for a cross-flow structure and a semiconductor processing apparatus. The diffuser comprises an air inlet channel and a diffusion body. The diffusion body comprises an inclined surface cavity and a plurality of gas flow channels; the top of the center of the inclined plane cavity is communicated with the air inlet channel, the inclined plane cavity is provided with a top outline composed of a first inclined plane and a second inclined plane and a bottom outline composed of a third inclined plane and a fourth inclined plane, and the top outline and the bottom outline form an internal space with a large central space and a small edge space; an air inlet of each flow air channel is communicated with the bottom outline of the inclined surface cavity, and the lengths of the flow air channels are gradually reduced from the middle to the two sides of the edge.

The utility model discloses a furnace horizontal type dissolved gas scrubber which comprises a shell, a gas inlet pipe and a gas outlet pipe which are integrally formed are arranged at the top of the shell, a vertically arranged partition plate is fixedly connected in the shell, a herringbone inclined plate is welded to the bottom of the partition plate, a liquid inlet pipe is fixedly connected to the right side of the shell, and a gas outlet pipe is fixedly connected to the left side of the shell. A water pump is fixedly installed on the rear side of the shell, the input end of the water pump is fixedly connected with an input pipe which is connected with the lower side of the shell, the output end of the water pump is fixedly connected with an output pipe which is connected with the upper side of the shell, and a nozzle is fixedly installed at the end, away from the water pump, of the output pipe. The water pump sucks and transfers the washing liquid in the shell through the input pipe and then conveys the washing liquid to the spray head through the output pipe, so that the washing liquid is sprayed to the flue gas, the inclined plate and the flow guide plate are arranged, the sprayed washing liquid can quickly flow downwards, the water pump can be used for the secondary use of the used washing liquid, the use amount of the washing liquid is reduced, and the recovery difficulty of the washing liquid is reduced.

This invention provides a method for reducing particulate matter in high-purity metal materials. The method includes: (1) placing multiple metal sheets in a partitioned heating device to form a stack; wherein the partitioned heating device includes a first temperature zone and a second temperature zone distributed sequentially from top to bottom; a portion of the stack is located in the first temperature zone, and another portion is located in the second temperature zone; (2) sequentially performing a first-stage partitioned heating and a second-stage partitioned heating on the stack to obtain high-purity metal materials; wherein, during the first-stage partitioned heating process, the target temperature of the first temperature zone is greater than the target temperature of the second temperature zone. This invention performs two-stage partitioned heating on the stack formed by multiple metal sheets. During the first-stage partitioned heating process, melting begins from the top of the stack, thereby reducing the probability of the metal sheets slipping during melting and reducing particulate matter in the high-purity metal materials.

The utility model discloses a tailing wastewater filtering device which comprises a buffer tank, a water inlet pipe is vertically arranged at the top end of the buffer tank, a slag discharge pipe is vertically arranged at the bottom end of the buffer tank, a first valve is arranged on the slag discharge pipe, a first connector is horizontally arranged on the side wall of the buffer tank in a penetrating manner, and the first connector is higher than the slag discharge pipe; the filtering through pipe is fixed on the outer side of the first connecting port and is horizontally distributed; the filter assembly is detachably arranged in the filter through pipe, the filter assembly comprises a plurality of filter screens, the filter screens are vertically distributed, and the filter screens are arranged in the length direction of the filter through pipe. According to the utility model, the buffer tank is arranged, so that the filter screen cannot be directly impacted by waste water, the service life of the filter screen is prolonged, and particulate matters attached to the filter screen can be reduced by depositing a part of particulate matters in the waste water through the buffer tank, so that the normal service time of the filter screen is prolonged, and the maintenance period is prolonged.