101results about How to "Solve dust accumulation" patented technology

The invention discloses a double-rotation SCR denitration method and an apparatus thereof. According to the invention, a first eddy flow catalytic reaction chamber and a second eddy flow catalytic reaction chamber are arranged along a denitrating tower body; a flue gas introduction pipeline is arranged on a sidewall of the denitrating tower body; several eddy flow atomizing nozzles are respectively arranged on inner periphery of the flue gas introduction pipeline and the inner periphery at top of the first eddy flow catalytic reaction chamber; when flue gas is introduced into the flue gas introduction pipeline, the flue gas and ammonia gas injected by the eddy flow atomizing nozzle are mixed, and a mixture enables spiral sinking along circumference of the first eddy flow catalytic reaction chamber from up to down in a tangent circle mode, under effect of a cyclone, and then the mixture enable spiral rise along circumference of the second eddy flow catalytic reaction chamber from down to up in the tangent circle mode. Under prerequisite that high efficiency denitration is ensured, catalyst amount is less, operation of technical means is simple and easy, compared with the prior art, a denitrating tower structure is simple, cost of the apparatus is low, denitration efficiency is high, energy consumption is low, escapement ratio of ammonia is reduced, denitration cost is greatly reduced, and economic benefit is obviously increased.

The invention discloses a manual coal-mine-tunneling ventilation-air-cylinder air outlet control device. The manual coal-mine-tunneling ventilation-air-cylinder air outlet control device comprises a support, a hardness air cylinder and a guiding rail. The hardness air cylinder penetrates through the support, the guiding rail is arranged above the support, hanging cables are connected to the top of the guiding rail, a sleeve is fixed to the top of the support, a sliding block is fixed on the sleeve and matched with the guiding rail, a universal joint is arranged between the top of the hardness air cylinder and the support, a rotating piece of the universal joint extends into the sleeve, a swinging piece of the universal joint is fixed to the top of the hardness air cylinder, a plurality of blades are arranged on an outlet in the hardness air cylinder and form a circular-truncated-cone-type structure, the small end of the circular-truncated-cone-type structure is close to the hardness air cylinder, a blade opening-and-closing mechanism is arranged on the hardness air cylinder, and a turning adjusting rod is fixed to the bottom of the hardness air cylinder. The manual coal-mine-tunneling ventilation-air-cylinder air outlet control device is convenient to install and use and high in safe reliability, the problems that as the local ventilator power is continuously improved, and the diameter of the air cylinder is increased, circulation air is caused, the local air speed of a working area is super high, and the working condition is poor are solved, and an air-flowing field in a roadway can be reasonably controlled.

The invention is high-efficiency and low-pollution biomass high-temperature combustion boiler and belongs to the boiler technical field. The invention comprises a biomass granule feeding device, a fuel even distribution plate, a cross flue tube, a radiate diversion block, an air nozzle in sections, a cyclone dust collector, a liquid drainage pool, a furnace, and a heat convection chamber. The invention is characterized in that a hopper of the biomass granule feeding device is arranged above the boiler for pre-drying; radiate diversion blocks are arranged in good order in the boiler; the pre-heated high-temperature is injected upwards into a hearth from the nozzle sections in a tangential direction to realize the staged and swirl combustion; the bottom is equipped with a gas, liquid and solid phase high-temperature cyclone segregator; the central high-temperature flue gas flows through a central flue tube to the upper cross flue tube and then enters the annular clearance between the furnace and the boiler wall and the hot convection chamber from below the boiler wall. The invention combines characteristics of biomass fuel and comprehensively absorbs the advantages of high-temperature air combustion, staged combustion, cyclone combustion, cyclone dust collection, liquid drainage, flue gas recirculation and other technologies, so the invention can realize the clean and high-efficiency use of the renewable energy of biomass.

The invention relates to a sheet air preheating device, which comprises: a box, a heat exchange element, and an air-smoke entrance tubular box, wherein said box is arranged with sheet heat exchange element formed by sheet beam with at least one layer of one sheet beam module; the upper end of sheet beam is through to the smoke inlet tubular box and the air outlet tubular box, while the lower end is through to the smoke outlet tubular box and the air inlet tubular box; the sheet beam module is formed by layered ripple sheets; the air-smoke channels of sheet beam module are sealed channels with reversed direction. The invention uses reverse flow to exchange heat, with high efficiency, small volume, light weight and low cost.

The invention discloses a method for removing gas-phase potassium ions in biomass flue gas by utilizing ammonium phosphate. The method comprises the following steps of: adding quantitative ammonium phosphate additive onto a material layer of a fire grate of a boiler or into the hearth of the boiler by virtue of a spraying device in a biomass combustion device, and carrying out a reaction on the ammonium phosphate additive as well as gas-phase potassium chloride and potassium carbonate in the flue gas at a set temperature to generate potassium phosphate, so as to remove the gas-phase potassium ions in the biomass combustion flue gas. By adopting the method for removing gas-phase potassium ions in biomass flue gas by utilizing ammonium phosphate, potassium ions in the flue gas when biomass fuel combusts can be effectively removed, the problems that ash is deposited on a biomass boiler heating surface and the biomass boiler heating surface is slagged and corroded can be avoided, and removal of NOx can be promoted by amino groups produced when ammonium phosphate is heated and decomposed.

A single drum horizontal vertical spirally corrugated tube large scale water-fire tube hot-water boiler relates to a water-fire tube hot-water boiler. The invention solves the problem that the existing water-fire hot-water boiler is likely to accumulate ash under low load, thus causing rise of flue gas temperature and obvious drop of heat efficiency. A membrane water wall partition is parallelly arranged at the rear of the water wall in a hearth rear wall ; two rear side wall water walls are positioned at the rear of the hearth rear wall water wall as well as at two sides in a furnace body; a coiled pipe is arranged in a cavity formed by the enclosure of the hearth rear wall water wall, the membrane water wall partition and the two rear side wall water walls; the hearth rear wall water wall, the membrane water wall partition, the two rear side wall water walls and the cavity formed by the enclosure of the three are positioned in the middle part of the furnace body; and the hearth rear wall water wall is a membrane water wall; and at least one vertical spirally corrugated tube coal economizer is arranged at the rear end in the furnace body. The invention adopts the vertical spirally corrugated tube coal economizer, and therefore no ash is accumulated in the spirally corrugated tube, ash removal is easy and the heat efficiency of the boiler is improved.

The invention relates to a sheet air condenser, wherein the support has one platform; a fan is mounted under the platform; an A-shaped support is mounted above the platform, while it is mounted with baffle walls around; two side surfaces of A-shaped support are suspended with leeward sheet heat transmission element and reverse sheet heat transmission element; the upper end of A-shaped support is mounted with steam distribute tube while two lower ends are mounted with condensed liquid collecting tubes, and the upper part at two sides is mounted with exhaust tube; the upper end of longitudinal channel of leeward sheet heat transmission element is through to the steam distributing tube, while the lower end is through to two condensed liquid collecting tube; the upper end of longitudinal channel of reverse sheet heat transmission element is through to two exhaust tubes, while the lower end is through to two condensed liquid collecting tubes. The invention has high heat transmission efficiency, better cooling effect, and low energy consumption.

The invention belongs to the field of intelligent sweeping, and specifically relates to a photovoltaic power station sweeping and monitoring integrated management system comprising a dust deposition detection and early warning module, a monitoring module, an intelligent sweeping robot cluster and a sweeping benefit evaluation module. The dust deposition detection and early warning module judges the dust deposition state through operation parameters of a photovoltaic array and outputs an early warning signal when the dust deposition state reaches a dust deposition threshold state. The monitoring module sends a sweeping instruction to the intelligent sweeping robot cluster when receiving the early warning signal, and optimizes the sweeping process according to the received operation data of the intelligent sweeping robot. The intelligent sweeping robot cluster controls full-automatic cleaning of the photovoltaic array according to the cleaning instruction and sends operation data to the monitoring module. The sweeping benefit evaluation module judges the sweeping effect according to the change of the operation parameters of the photovoltaic array before and after sweeping, and determines the optimal sweeping frequency in combination with the sweeping benefit data of the photovoltaic array. According to the scheme, deposited dust sweeping is carried out on the photovoltaic array with the advantages of less manpower, low cost and intelligence, and meanwhile the operation and maintenance level of a photovoltaic power station is improved.

The invention relates to an all-welded plate type heat exchanger for multi-stream gas-to-gas heat exchange; an upright quadrangular heat transfer plate assembly module is chosen as a heat transfer element; dust impurities of heat exchange mediums attached on plates fall because of the self weight; moreover, the surfaces of the plates are smooth and have no flowing dead zone, so that the dust-blowing is convenient, the daily maintenance and cleaning of equipment are facilitated and the dust deposition of the equipment is solved thoroughly. The quadrangular heat transfer plate assembly module is a pure counter-flowing corrugated plate; and a hot medium and a cold medium are in a pure counter-flowing state at two sides of the plates. The corrugations of the plates are capable of strengthening heat transfer and play guiding and supporting roles. After the plates are overlapped, a hot medium passage and a cold medium passage are respectively formed at two sides of the plates, and the corrugations contact with one another; the mutual supporting structure is capable of strengthening the medium pressure-bearing ability of the plates; meanwhile, the equipment is compact in structure and small in volume; and the manufacturing cost of the equipment is reduced.

The invention discloses a furnace kiln wet flue gas white-elimination system, and relates to a white-elimination process of a wet flue gas after spray cooling of furnace kiln flue gas. The system comprises a gas-gas heat exchanger, a flue gas spray cooling apparatus and a fan. A flue gas and air are subjected to heat exchange, the flue gas after cooling enters the flue gas spray cooling apparatus,the wet flue gas after cooling is mixed with hot air to obtain a mixture, the mixture is heated and dehumidified, and then discharging is carried out through a chimney, and thus the white-eliminationrequirement is realized. The process system is simple, emission of air pollution and secondary pollutants is reduced while the consumption of a spray cooling liquid is reduced during a flue gas cooling process, and at the same time, the demand of flue gas white elimination is solved, so that the system has multiple purposes. Moreover, the implementation cost is low, and economic and social benefits are remarkable.

The invention discloses an energy conservation and emission reduction modification method for reducing the emission load of nitric oxide of a DDF cement decomposing furnace. By arranging an air gathering bellows and a gooseneck pipe on the DDF decomposing furnace with the small volume, the smoke standing time is prolonged; part of coal powder is distributed to the conical portion of the decomposing furnace, part of tertiary air is distributed to the upper middle portion of the decomposing furnace, the volume of the DDF decomposing furnace is enlarged, the position of part of coal powder entering the furnace is reduced, and the coal powder burn-off rate is improved. The coefficient of excess air in the lower middle portion of the decomposing furnace is smaller than 1.0. Under the condition of insufficient oxygen, CO of a large proportion is generated to become reducing agents for reducing and eliminating nitric oxide. An ash returning channel is arranged inside the air gathering bellows and feeds raw materials and coal powder particles subsided back to the position above a middle nozzle of the decomposing furnace, so that the problem of sintering blockage of accumulated ash is solved, the coarse particle processing capacity of the decomposing furnace is improved, the decomposition rate of raw materials entering the furnace is improved, and through the double effects of reducing emission of nitric oxide and reducing heat loss, the effective energy conservation and emission reduction of a cement calcining system are achieved.

A large-scale water-fire tube hot water boiler of double-barrel transverse vertical type threaded flue relates to a water-fire tube hot water boiler. The aim of the invention is to settle the problems of ash accumulation, hard ash elimination, and reduced thermal efficiency of boiler in the prior water-fire tube hot water boiler. A burnout chamber, a convection calandria and a vertical threaded flue coal economizer are provided in the boiler body. The convection calandria is communicated with the upper barrel and the lower barrel. A warm water area and a hot warm water area are installed in the upper barrel. A first connecting pipe is communicated with a lower box of water cooled wall of back wall and the lower drum. A second connecting pipe is communicated with a lower drum and a vertical threaded flue coal economizer. A third connecting pipe is communicated with a hot water area and the vertical threaded flue coal economizer. The down pipe of water cooled wall of front wall is communicated with a lower collection box of water cooled wall of front wall and the cold water area. The down pipe of left wall is communicated with a lower collection box of water cooled wall of left wall. The down pipe of right wall is communicated with a lower collection box of water cooled box of water cooled wall of right wall. The large-scale water-fire tube hot water boiler of double-barrel transverse vertical type threaded flue according to the invention adopts the vertical threaded flue coal economizer and has the advantages of no ash accumulation in the threaded flue, easy ash elimination and high thermal efficiency of boiler.

The invention discloses a frameless detachment-free rotary air heater, which consists of 3 to 8 groups of outer fin reinforced heat transfer tube bundles, wherein each group of heat transfer tube bundle has a frameless self-supporting structure consisting of spiral fin heat transfer tube bundles welded on a thin-walled inlet steam collecting tank and a thin-walled drainage collecting tank respectively, and the heat transfer tube bundles are averagely distributed in a primary air flue and a secondary air flue; any heat transfer tube bundle can rotate separately in a full angle of 360 degrees by adopting the self-supporting stable structure of the tube bundle so as to solve the problems that separate rotation of the heating surface of a certain stage cannot be realized, rotation in the full angle of 360 degrees cannot be realized, the heating surface cannot be rotated without cutting off steam, the operation part has complex structure and is not easily detached or maintained and ash blockage, leakage and fin deformation are caused; and the rotary air heater is frameless and detachment-free, can rotate in the full angle of 360 degrees, and is convenient to maintain.

The invention provides a rear smoke channel of a biomass boiler and the biomass boiler. The rear smoke channel of the biomass boiler is arranged in a U shape, and smoke descends from the top of the rear smoke channel to the bottom and then rises from the bottom to the top. The rear smoke channel comprises dust removing devices, an ash bucket, one or more economizers and a first air preheater, wherein dust removing devices are located at positions of two corners of a U-shaped flow line of the smoke, the ash bucket is located under dust removing devices, dust removing baffle plates are arranged inside dust removing devices, when smoke dust in the smoke collides with dust removing baffle plates, the smoke dust changes directions and falls into the ash bucket under the action of gravity, one or more economizers are located at a position where the smoke flows from bottom to top, and the first air preheater is located above one or more economizers which are arranged at the position where the smoke flows from bottom to top. By the aid of the rear smoke channel of the biomass boiler and the biomass boiler, the automatic dust removing capability of the boiler can be improved, the land occupied by the dust removing device of the boiler and the investment cost can be reduced, and various problems caused by ash deposition of the boiler can be solved.

The invention relates to the technical field of boiler fuel gas waste heat recovery equipment, and particularly to a low temperature coal economizer with a straight channel structure. The low temperature coal economizer comprises a heat transfer module, a medium channel box arranged at one end of the heat transfer module and flue transition boxes on the upper side and the lower side of the heat transfer module. According to the low temperature coal economizer with the straight channel structure, the problems in the prior art that the conventional plate heat exchanger is liable to flow passage blockage, dirt accumulation and corrosion, and temperature crossover of cold and hot mediums are solved.

The invention discloses a novel accumulated dust blowing device of a sector plate of a boiler air pre-heater. The novel accumulated dust blowing device comprises a pre-heater body, a secondary air side opening, a top cover, a center hole, a flue gas side opening, a primary air side opening, a main pipe, branch pipes, valves, a primary air inlet, a shaft hole, the sector plate, dust blowing spray heads, a rotor, a heat transfer element and a rotor center barrel. The main pipe is mounted to be connected to the upper portion of the sector plate from the lower portion of a primary air bin, carbonsteel pipelines are selected as branches and are directly communicated into the sector plate, connecting parts are all welded, and therefore the blowing device is formed; the corresponding valve is mounted on each branch, the air volume can be controlled conveniently, and labor force is reduced; meanwhile, the problem that the air leakage rate is increased due to accumulated dust in the running process is avoided, and the problem of dust accumulation of the sector plate is thoroughly solved; and modification is extremely simple and convenient, and production requirements are met.

The invention discloses a double-open-close mode window capable of optimizing airtightness. The double-open-close mode window comprises a window frame for fixing with a wall body, and an inner windowbody which is installed in the window frame and relatively parallelly slid and rotatably flatly opened. A contact surface of the inner window body and the window frame is provided with a sealing adhesive tape. One part of the window frame is provided with a fixed glass which cannot be opened and closed, and the other part is a hollow window frame for bearing the inner window body. The double-open-close mode window has the following advantages of a double-open-close mode, space-saving, convenient living, and convenient cleaning, and is capable of effectively solving a problem of sliding chute dust deposition.